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1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55
56#include "nfs4_fs.h"
57#include "internal.h"
58#include "nfs4idmap.h"
59#include "nfs4session.h"
60#include "pnfs.h"
61#include "netns.h"
62
63#define NFSDBG_FACILITY NFSDBG_XDR
64
65/* Mapping from NFS error code to "errno" error code. */
66#define errno_NFSERR_IO EIO
67
68static int nfs4_stat_to_errno(int);
69
70/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71#ifdef DEBUG
72#define NFS4_MAXTAGLEN 20
73#else
74#define NFS4_MAXTAGLEN 0
75#endif
76
77/* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81#define lock_owner_id_maxsz (1 + 1 + 4)
82#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85#define op_encode_hdr_maxsz (1)
86#define op_decode_hdr_maxsz (2)
87#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93#define decode_putfh_maxsz (op_decode_hdr_maxsz)
94#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96#define encode_getfh_maxsz (op_encode_hdr_maxsz)
97#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99#define nfs4_fattr_bitmap_maxsz 4
100#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101#define nfstime4_maxsz (3)
102#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
103#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
104#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
106#ifdef CONFIG_NFS_V4_SECURITY_LABEL
107/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
108#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
109#else
110#define nfs4_label_maxsz 0
111#endif
112/* We support only one layout type per file system */
113#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
114/* This is based on getfattr, which uses the most attributes: */
115#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
116 3*nfstime4_maxsz + \
117 nfs4_owner_maxsz + \
118 nfs4_group_maxsz + nfs4_label_maxsz + \
119 decode_mdsthreshold_maxsz))
120#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
121 nfs4_fattr_value_maxsz)
122#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
123#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
124 1 + 2 + 1 + \
125 nfs4_owner_maxsz + \
126 nfs4_group_maxsz + \
127 nfs4_label_maxsz + \
128 1 + nfstime4_maxsz + \
129 1 + nfstime4_maxsz)
130#define encode_savefh_maxsz (op_encode_hdr_maxsz)
131#define decode_savefh_maxsz (op_decode_hdr_maxsz)
132#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
133#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
134#define encode_fsinfo_maxsz (encode_getattr_maxsz)
135/* The 5 accounts for the PNFS attributes, and assumes that at most three
136 * layout types will be returned.
137 */
138#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
139 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
140#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
141#define decode_renew_maxsz (op_decode_hdr_maxsz)
142#define encode_setclientid_maxsz \
143 (op_encode_hdr_maxsz + \
144 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
145 /* client name */ \
146 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
147 1 /* sc_prog */ + \
148 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
149 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
150 1) /* sc_cb_ident */
151#define decode_setclientid_maxsz \
152 (op_decode_hdr_maxsz + \
153 2 /* clientid */ + \
154 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
155 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
156 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
157#define encode_setclientid_confirm_maxsz \
158 (op_encode_hdr_maxsz + \
159 3 + (NFS4_VERIFIER_SIZE >> 2))
160#define decode_setclientid_confirm_maxsz \
161 (op_decode_hdr_maxsz)
162#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
163#define decode_lookup_maxsz (op_decode_hdr_maxsz)
164#define encode_lookupp_maxsz (op_encode_hdr_maxsz)
165#define decode_lookupp_maxsz (op_decode_hdr_maxsz)
166#define encode_share_access_maxsz \
167 (2)
168#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
169#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
170#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
171#define encode_open_maxsz (op_encode_hdr_maxsz + \
172 2 + encode_share_access_maxsz + 2 + \
173 open_owner_id_maxsz + \
174 encode_opentype_maxsz + \
175 encode_claim_null_maxsz)
176#define decode_space_limit_maxsz (3)
177#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
178#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
179 decode_space_limit_maxsz + \
180 decode_ace_maxsz)
181#define decode_change_info_maxsz (5)
182#define decode_open_maxsz (op_decode_hdr_maxsz + \
183 decode_stateid_maxsz + \
184 decode_change_info_maxsz + 1 + \
185 nfs4_fattr_bitmap_maxsz + \
186 decode_delegation_maxsz)
187#define encode_open_confirm_maxsz \
188 (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 1)
190#define decode_open_confirm_maxsz \
191 (op_decode_hdr_maxsz + \
192 decode_stateid_maxsz)
193#define encode_open_downgrade_maxsz \
194 (op_encode_hdr_maxsz + \
195 encode_stateid_maxsz + 1 + \
196 encode_share_access_maxsz)
197#define decode_open_downgrade_maxsz \
198 (op_decode_hdr_maxsz + \
199 decode_stateid_maxsz)
200#define encode_close_maxsz (op_encode_hdr_maxsz + \
201 1 + encode_stateid_maxsz)
202#define decode_close_maxsz (op_decode_hdr_maxsz + \
203 decode_stateid_maxsz)
204#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
205 encode_stateid_maxsz + \
206 encode_attrs_maxsz)
207#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
208 nfs4_fattr_bitmap_maxsz)
209#define encode_read_maxsz (op_encode_hdr_maxsz + \
210 encode_stateid_maxsz + 3)
211#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
212#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
213 2 + encode_verifier_maxsz + 5 + \
214 nfs4_label_maxsz)
215#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
216 decode_verifier_maxsz)
217#define encode_readlink_maxsz (op_encode_hdr_maxsz)
218#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
219#define encode_write_maxsz (op_encode_hdr_maxsz + \
220 encode_stateid_maxsz + 4)
221#define decode_write_maxsz (op_decode_hdr_maxsz + \
222 2 + decode_verifier_maxsz)
223#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
224#define decode_commit_maxsz (op_decode_hdr_maxsz + \
225 decode_verifier_maxsz)
226#define encode_remove_maxsz (op_encode_hdr_maxsz + \
227 nfs4_name_maxsz)
228#define decode_remove_maxsz (op_decode_hdr_maxsz + \
229 decode_change_info_maxsz)
230#define encode_rename_maxsz (op_encode_hdr_maxsz + \
231 2 * nfs4_name_maxsz)
232#define decode_rename_maxsz (op_decode_hdr_maxsz + \
233 decode_change_info_maxsz + \
234 decode_change_info_maxsz)
235#define encode_link_maxsz (op_encode_hdr_maxsz + \
236 nfs4_name_maxsz)
237#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
238#define encode_lockowner_maxsz (7)
239#define encode_lock_maxsz (op_encode_hdr_maxsz + \
240 7 + \
241 1 + encode_stateid_maxsz + 1 + \
242 encode_lockowner_maxsz)
243#define decode_lock_denied_maxsz \
244 (8 + decode_lockowner_maxsz)
245#define decode_lock_maxsz (op_decode_hdr_maxsz + \
246 decode_lock_denied_maxsz)
247#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
248 encode_lockowner_maxsz)
249#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
250 decode_lock_denied_maxsz)
251#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
252 encode_stateid_maxsz + \
253 4)
254#define decode_locku_maxsz (op_decode_hdr_maxsz + \
255 decode_stateid_maxsz)
256#define encode_release_lockowner_maxsz \
257 (op_encode_hdr_maxsz + \
258 encode_lockowner_maxsz)
259#define decode_release_lockowner_maxsz \
260 (op_decode_hdr_maxsz)
261#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
262#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
263#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
264 1 + nfs4_name_maxsz + \
265 1 + \
266 nfs4_fattr_maxsz)
267#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
268#define encode_create_maxsz (op_encode_hdr_maxsz + \
269 1 + 2 + nfs4_name_maxsz + \
270 encode_attrs_maxsz)
271#define decode_create_maxsz (op_decode_hdr_maxsz + \
272 decode_change_info_maxsz + \
273 nfs4_fattr_bitmap_maxsz)
274#define encode_statfs_maxsz (encode_getattr_maxsz)
275#define decode_statfs_maxsz (decode_getattr_maxsz)
276#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
277#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
278#define encode_getacl_maxsz (encode_getattr_maxsz)
279#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
280 nfs4_fattr_bitmap_maxsz + 1)
281#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
282 encode_stateid_maxsz + 3)
283#define decode_setacl_maxsz (decode_setattr_maxsz)
284#define encode_fs_locations_maxsz \
285 (encode_getattr_maxsz)
286#define decode_fs_locations_maxsz \
287 (0)
288#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
289#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
290
291#if defined(CONFIG_NFS_V4_1)
292#define NFS4_MAX_MACHINE_NAME_LEN (64)
293#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
294 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
295
296#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
297 encode_verifier_maxsz + \
298 1 /* co_ownerid.len */ + \
299 /* eia_clientowner */ \
300 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* flags */ + \
302 1 /* spa_how */ + \
303 /* max is SP4_MACH_CRED (for now) */ + \
304 1 + NFS4_OP_MAP_NUM_WORDS + \
305 1 + NFS4_OP_MAP_NUM_WORDS + \
306 1 /* implementation id array of size 1 */ + \
307 1 /* nii_domain */ + \
308 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
309 1 /* nii_name */ + \
310 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
311 3 /* nii_date */)
312#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
313 2 /* eir_clientid */ + \
314 1 /* eir_sequenceid */ + \
315 1 /* eir_flags */ + \
316 1 /* spr_how */ + \
317 /* max is SP4_MACH_CRED (for now) */ + \
318 1 + NFS4_OP_MAP_NUM_WORDS + \
319 1 + NFS4_OP_MAP_NUM_WORDS + \
320 2 /* eir_server_owner.so_minor_id */ + \
321 /* eir_server_owner.so_major_id<> */ \
322 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
323 /* eir_server_scope<> */ \
324 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
325 1 /* eir_server_impl_id array length */ + \
326 1 /* nii_domain */ + \
327 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
328 1 /* nii_name */ + \
329 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
330 3 /* nii_date */)
331#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
332#define decode_channel_attrs_maxsz (6 + \
333 1 /* ca_rdma_ird.len */ + \
334 1 /* ca_rdma_ird */)
335#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
336 2 /* csa_clientid */ + \
337 1 /* csa_sequence */ + \
338 1 /* csa_flags */ + \
339 encode_channel_attrs_maxsz + \
340 encode_channel_attrs_maxsz + \
341 1 /* csa_cb_program */ + \
342 1 /* csa_sec_parms.len (1) */ + \
343 1 /* cb_secflavor (AUTH_SYS) */ + \
344 1 /* stamp */ + \
345 1 /* machinename.len */ + \
346 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
347 1 /* uid */ + \
348 1 /* gid */ + \
349 1 /* gids.len (0) */)
350#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
351 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
352 1 /* csr_sequence */ + \
353 1 /* csr_flags */ + \
354 decode_channel_attrs_maxsz + \
355 decode_channel_attrs_maxsz)
356#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
357 /* bctsa_sessid */ \
358 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
359 1 /* bctsa_dir */ + \
360 1 /* bctsa_use_conn_in_rdma_mode */)
361#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
362 /* bctsr_sessid */ \
363 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
364 1 /* bctsr_dir */ + \
365 1 /* bctsr_use_conn_in_rdma_mode */)
366#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
367#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
368#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
369#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
370#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
371 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
372#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
373 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
374#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
375#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
376#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
377 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
378 1 /* layout type */ + \
379 1 /* maxcount */ + \
380 1 /* bitmap size */ + \
381 1 /* notification bitmap length */ + \
382 1 /* notification bitmap, word 0 */)
383#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
384 1 /* layout type */ + \
385 1 /* opaque devaddr4 length */ + \
386 /* devaddr4 payload is read into page */ \
387 1 /* notification bitmap length */ + \
388 1 /* notification bitmap, word 0 */)
389#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
390 encode_stateid_maxsz)
391#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
392 decode_stateid_maxsz + \
393 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
394#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
395 2 /* offset */ + \
396 2 /* length */ + \
397 1 /* reclaim */ + \
398 encode_stateid_maxsz + \
399 1 /* new offset (true) */ + \
400 2 /* last byte written */ + \
401 1 /* nt_timechanged (false) */ + \
402 1 /* layoutupdate4 layout type */ + \
403 1 /* layoutupdate4 opaqueue len */)
404 /* the actual content of layoutupdate4 should
405 be allocated by drivers and spliced in
406 using xdr_write_pages */
407#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
408#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
409 encode_stateid_maxsz + \
410 1 + \
411 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
412#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
413 1 + decode_stateid_maxsz)
414#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
415#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
416#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
417 XDR_QUADLEN(NFS4_STATEID_SIZE))
418#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
419#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
420 XDR_QUADLEN(NFS4_STATEID_SIZE))
421#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
422#else /* CONFIG_NFS_V4_1 */
423#define encode_sequence_maxsz 0
424#define decode_sequence_maxsz 0
425#define encode_layoutreturn_maxsz 0
426#define decode_layoutreturn_maxsz 0
427#endif /* CONFIG_NFS_V4_1 */
428
429#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
430#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
431#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
432 encode_sequence_maxsz + \
433 encode_putfh_maxsz + \
434 encode_read_maxsz)
435#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
436 decode_sequence_maxsz + \
437 decode_putfh_maxsz + \
438 decode_read_maxsz)
439#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
440 encode_sequence_maxsz + \
441 encode_putfh_maxsz + \
442 encode_readlink_maxsz)
443#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
444 decode_sequence_maxsz + \
445 decode_putfh_maxsz + \
446 decode_readlink_maxsz)
447#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
448 encode_sequence_maxsz + \
449 encode_putfh_maxsz + \
450 encode_readdir_maxsz)
451#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
452 decode_sequence_maxsz + \
453 decode_putfh_maxsz + \
454 decode_readdir_maxsz)
455#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
458 encode_write_maxsz + \
459 encode_getattr_maxsz)
460#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
463 decode_write_maxsz + \
464 decode_getattr_maxsz)
465#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
466 encode_sequence_maxsz + \
467 encode_putfh_maxsz + \
468 encode_commit_maxsz)
469#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
470 decode_sequence_maxsz + \
471 decode_putfh_maxsz + \
472 decode_commit_maxsz)
473#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
474 encode_sequence_maxsz + \
475 encode_putfh_maxsz + \
476 encode_open_maxsz + \
477 encode_access_maxsz + \
478 encode_getfh_maxsz + \
479 encode_getattr_maxsz)
480#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
481 decode_sequence_maxsz + \
482 decode_putfh_maxsz + \
483 decode_open_maxsz + \
484 decode_access_maxsz + \
485 decode_getfh_maxsz + \
486 decode_getattr_maxsz)
487#define NFS4_enc_open_confirm_sz \
488 (compound_encode_hdr_maxsz + \
489 encode_putfh_maxsz + \
490 encode_open_confirm_maxsz)
491#define NFS4_dec_open_confirm_sz \
492 (compound_decode_hdr_maxsz + \
493 decode_putfh_maxsz + \
494 decode_open_confirm_maxsz)
495#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_open_maxsz + \
499 encode_access_maxsz + \
500 encode_getattr_maxsz)
501#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
502 decode_sequence_maxsz + \
503 decode_putfh_maxsz + \
504 decode_open_maxsz + \
505 decode_access_maxsz + \
506 decode_getattr_maxsz)
507#define NFS4_enc_open_downgrade_sz \
508 (compound_encode_hdr_maxsz + \
509 encode_sequence_maxsz + \
510 encode_putfh_maxsz + \
511 encode_layoutreturn_maxsz + \
512 encode_open_downgrade_maxsz)
513#define NFS4_dec_open_downgrade_sz \
514 (compound_decode_hdr_maxsz + \
515 decode_sequence_maxsz + \
516 decode_putfh_maxsz + \
517 decode_layoutreturn_maxsz + \
518 decode_open_downgrade_maxsz)
519#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_layoutreturn_maxsz + \
523 encode_close_maxsz + \
524 encode_getattr_maxsz)
525#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
526 decode_sequence_maxsz + \
527 decode_putfh_maxsz + \
528 decode_layoutreturn_maxsz + \
529 decode_close_maxsz + \
530 decode_getattr_maxsz)
531#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
532 encode_sequence_maxsz + \
533 encode_putfh_maxsz + \
534 encode_setattr_maxsz + \
535 encode_getattr_maxsz)
536#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
537 decode_sequence_maxsz + \
538 decode_putfh_maxsz + \
539 decode_setattr_maxsz + \
540 decode_getattr_maxsz)
541#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
542 encode_sequence_maxsz + \
543 encode_putfh_maxsz + \
544 encode_fsinfo_maxsz)
545#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
546 decode_sequence_maxsz + \
547 decode_putfh_maxsz + \
548 decode_fsinfo_maxsz)
549#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
550 encode_renew_maxsz)
551#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
552 decode_renew_maxsz)
553#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
554 encode_setclientid_maxsz)
555#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
556 decode_setclientid_maxsz)
557#define NFS4_enc_setclientid_confirm_sz \
558 (compound_encode_hdr_maxsz + \
559 encode_setclientid_confirm_maxsz)
560#define NFS4_dec_setclientid_confirm_sz \
561 (compound_decode_hdr_maxsz + \
562 decode_setclientid_confirm_maxsz)
563#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
564 encode_sequence_maxsz + \
565 encode_putfh_maxsz + \
566 encode_lock_maxsz)
567#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
568 decode_sequence_maxsz + \
569 decode_putfh_maxsz + \
570 decode_lock_maxsz)
571#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
572 encode_sequence_maxsz + \
573 encode_putfh_maxsz + \
574 encode_lockt_maxsz)
575#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
576 decode_sequence_maxsz + \
577 decode_putfh_maxsz + \
578 decode_lockt_maxsz)
579#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
580 encode_sequence_maxsz + \
581 encode_putfh_maxsz + \
582 encode_locku_maxsz)
583#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
584 decode_sequence_maxsz + \
585 decode_putfh_maxsz + \
586 decode_locku_maxsz)
587#define NFS4_enc_release_lockowner_sz \
588 (compound_encode_hdr_maxsz + \
589 encode_lockowner_maxsz)
590#define NFS4_dec_release_lockowner_sz \
591 (compound_decode_hdr_maxsz + \
592 decode_lockowner_maxsz)
593#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
594 encode_sequence_maxsz + \
595 encode_putfh_maxsz + \
596 encode_access_maxsz + \
597 encode_getattr_maxsz)
598#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
599 decode_sequence_maxsz + \
600 decode_putfh_maxsz + \
601 decode_access_maxsz + \
602 decode_getattr_maxsz)
603#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
604 encode_sequence_maxsz + \
605 encode_putfh_maxsz + \
606 encode_getattr_maxsz + \
607 encode_renew_maxsz)
608#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_getattr_maxsz + \
612 decode_renew_maxsz)
613#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
614 encode_sequence_maxsz + \
615 encode_putfh_maxsz + \
616 encode_lookup_maxsz + \
617 encode_getattr_maxsz + \
618 encode_getfh_maxsz)
619#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
620 decode_sequence_maxsz + \
621 decode_putfh_maxsz + \
622 decode_lookup_maxsz + \
623 decode_getattr_maxsz + \
624 decode_getfh_maxsz)
625#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
626 encode_sequence_maxsz + \
627 encode_putfh_maxsz + \
628 encode_lookupp_maxsz + \
629 encode_getattr_maxsz + \
630 encode_getfh_maxsz)
631#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
632 decode_sequence_maxsz + \
633 decode_putfh_maxsz + \
634 decode_lookupp_maxsz + \
635 decode_getattr_maxsz + \
636 decode_getfh_maxsz)
637#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
638 encode_sequence_maxsz + \
639 encode_putrootfh_maxsz + \
640 encode_getattr_maxsz + \
641 encode_getfh_maxsz)
642#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
643 decode_sequence_maxsz + \
644 decode_putrootfh_maxsz + \
645 decode_getattr_maxsz + \
646 decode_getfh_maxsz)
647#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
648 encode_sequence_maxsz + \
649 encode_putfh_maxsz + \
650 encode_remove_maxsz)
651#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
652 decode_sequence_maxsz + \
653 decode_putfh_maxsz + \
654 decode_remove_maxsz)
655#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
656 encode_sequence_maxsz + \
657 encode_putfh_maxsz + \
658 encode_savefh_maxsz + \
659 encode_putfh_maxsz + \
660 encode_rename_maxsz)
661#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
662 decode_sequence_maxsz + \
663 decode_putfh_maxsz + \
664 decode_savefh_maxsz + \
665 decode_putfh_maxsz + \
666 decode_rename_maxsz)
667#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
668 encode_sequence_maxsz + \
669 encode_putfh_maxsz + \
670 encode_savefh_maxsz + \
671 encode_putfh_maxsz + \
672 encode_link_maxsz + \
673 encode_restorefh_maxsz + \
674 encode_getattr_maxsz)
675#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
676 decode_sequence_maxsz + \
677 decode_putfh_maxsz + \
678 decode_savefh_maxsz + \
679 decode_putfh_maxsz + \
680 decode_link_maxsz + \
681 decode_restorefh_maxsz + \
682 decode_getattr_maxsz)
683#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
684 encode_sequence_maxsz + \
685 encode_putfh_maxsz + \
686 encode_symlink_maxsz + \
687 encode_getattr_maxsz + \
688 encode_getfh_maxsz)
689#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
690 decode_sequence_maxsz + \
691 decode_putfh_maxsz + \
692 decode_symlink_maxsz + \
693 decode_getattr_maxsz + \
694 decode_getfh_maxsz)
695#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
696 encode_sequence_maxsz + \
697 encode_putfh_maxsz + \
698 encode_create_maxsz + \
699 encode_getfh_maxsz + \
700 encode_getattr_maxsz)
701#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_create_maxsz + \
705 decode_getfh_maxsz + \
706 decode_getattr_maxsz)
707#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
708 encode_sequence_maxsz + \
709 encode_putfh_maxsz + \
710 encode_getattr_maxsz)
711#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
712 decode_sequence_maxsz + \
713 decode_putfh_maxsz + \
714 decode_getattr_maxsz)
715#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
716 encode_sequence_maxsz + \
717 encode_putfh_maxsz + \
718 encode_statfs_maxsz)
719#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
720 decode_sequence_maxsz + \
721 decode_putfh_maxsz + \
722 decode_statfs_maxsz)
723#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
724 encode_sequence_maxsz + \
725 encode_putfh_maxsz + \
726 encode_getattr_maxsz)
727#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_getattr_maxsz)
731#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
732 encode_sequence_maxsz + \
733 encode_putfh_maxsz + \
734 encode_layoutreturn_maxsz + \
735 encode_delegreturn_maxsz + \
736 encode_getattr_maxsz)
737#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_layoutreturn_maxsz + \
741 decode_delegreturn_maxsz + \
742 decode_getattr_maxsz)
743#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
744 encode_sequence_maxsz + \
745 encode_putfh_maxsz + \
746 encode_getacl_maxsz)
747#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
748 decode_sequence_maxsz + \
749 decode_putfh_maxsz + \
750 decode_getacl_maxsz)
751#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
752 encode_sequence_maxsz + \
753 encode_putfh_maxsz + \
754 encode_setacl_maxsz)
755#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
756 decode_sequence_maxsz + \
757 decode_putfh_maxsz + \
758 decode_setacl_maxsz)
759#define NFS4_enc_fs_locations_sz \
760 (compound_encode_hdr_maxsz + \
761 encode_sequence_maxsz + \
762 encode_putfh_maxsz + \
763 encode_lookup_maxsz + \
764 encode_fs_locations_maxsz + \
765 encode_renew_maxsz)
766#define NFS4_dec_fs_locations_sz \
767 (compound_decode_hdr_maxsz + \
768 decode_sequence_maxsz + \
769 decode_putfh_maxsz + \
770 decode_lookup_maxsz + \
771 decode_fs_locations_maxsz + \
772 decode_renew_maxsz)
773#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
774 encode_sequence_maxsz + \
775 encode_putfh_maxsz + \
776 encode_secinfo_maxsz)
777#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_putfh_maxsz + \
780 decode_secinfo_maxsz)
781#define NFS4_enc_fsid_present_sz \
782 (compound_encode_hdr_maxsz + \
783 encode_sequence_maxsz + \
784 encode_putfh_maxsz + \
785 encode_getfh_maxsz + \
786 encode_renew_maxsz)
787#define NFS4_dec_fsid_present_sz \
788 (compound_decode_hdr_maxsz + \
789 decode_sequence_maxsz + \
790 decode_putfh_maxsz + \
791 decode_getfh_maxsz + \
792 decode_renew_maxsz)
793#if defined(CONFIG_NFS_V4_1)
794#define NFS4_enc_bind_conn_to_session_sz \
795 (compound_encode_hdr_maxsz + \
796 encode_bind_conn_to_session_maxsz)
797#define NFS4_dec_bind_conn_to_session_sz \
798 (compound_decode_hdr_maxsz + \
799 decode_bind_conn_to_session_maxsz)
800#define NFS4_enc_exchange_id_sz \
801 (compound_encode_hdr_maxsz + \
802 encode_exchange_id_maxsz)
803#define NFS4_dec_exchange_id_sz \
804 (compound_decode_hdr_maxsz + \
805 decode_exchange_id_maxsz)
806#define NFS4_enc_create_session_sz \
807 (compound_encode_hdr_maxsz + \
808 encode_create_session_maxsz)
809#define NFS4_dec_create_session_sz \
810 (compound_decode_hdr_maxsz + \
811 decode_create_session_maxsz)
812#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
813 encode_destroy_session_maxsz)
814#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
815 decode_destroy_session_maxsz)
816#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
817 encode_destroy_clientid_maxsz)
818#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
819 decode_destroy_clientid_maxsz)
820#define NFS4_enc_sequence_sz \
821 (compound_decode_hdr_maxsz + \
822 encode_sequence_maxsz)
823#define NFS4_dec_sequence_sz \
824 (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz)
826#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
827 encode_sequence_maxsz + \
828 encode_putrootfh_maxsz + \
829 encode_fsinfo_maxsz)
830#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
831 decode_sequence_maxsz + \
832 decode_putrootfh_maxsz + \
833 decode_fsinfo_maxsz)
834#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
835 encode_sequence_maxsz + \
836 encode_reclaim_complete_maxsz)
837#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
838 decode_sequence_maxsz + \
839 decode_reclaim_complete_maxsz)
840#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
841 encode_sequence_maxsz +\
842 encode_getdeviceinfo_maxsz)
843#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
844 decode_sequence_maxsz + \
845 decode_getdeviceinfo_maxsz)
846#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
847 encode_sequence_maxsz + \
848 encode_putfh_maxsz + \
849 encode_layoutget_maxsz)
850#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz + \
852 decode_putfh_maxsz + \
853 decode_layoutget_maxsz)
854#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
855 encode_sequence_maxsz +\
856 encode_putfh_maxsz + \
857 encode_layoutcommit_maxsz + \
858 encode_getattr_maxsz)
859#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
860 decode_sequence_maxsz + \
861 decode_putfh_maxsz + \
862 decode_layoutcommit_maxsz + \
863 decode_getattr_maxsz)
864#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
865 encode_sequence_maxsz + \
866 encode_putfh_maxsz + \
867 encode_layoutreturn_maxsz)
868#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
869 decode_sequence_maxsz + \
870 decode_putfh_maxsz + \
871 decode_layoutreturn_maxsz)
872#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
873 encode_sequence_maxsz + \
874 encode_putrootfh_maxsz +\
875 encode_secinfo_no_name_maxsz)
876#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
877 decode_sequence_maxsz + \
878 decode_putrootfh_maxsz + \
879 decode_secinfo_no_name_maxsz)
880#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
881 encode_sequence_maxsz + \
882 encode_test_stateid_maxsz)
883#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
884 decode_sequence_maxsz + \
885 decode_test_stateid_maxsz)
886#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
887 encode_sequence_maxsz + \
888 encode_free_stateid_maxsz)
889#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
890 decode_sequence_maxsz + \
891 decode_free_stateid_maxsz)
892
893const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
894 compound_encode_hdr_maxsz +
895 encode_sequence_maxsz +
896 encode_putfh_maxsz +
897 encode_getattr_maxsz) *
898 XDR_UNIT);
899
900const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
901 compound_decode_hdr_maxsz +
902 decode_sequence_maxsz +
903 decode_putfh_maxsz) *
904 XDR_UNIT);
905
906const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
907 compound_decode_hdr_maxsz +
908 decode_sequence_maxsz) *
909 XDR_UNIT);
910EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
911#endif /* CONFIG_NFS_V4_1 */
912
913static const umode_t nfs_type2fmt[] = {
914 [NF4BAD] = 0,
915 [NF4REG] = S_IFREG,
916 [NF4DIR] = S_IFDIR,
917 [NF4BLK] = S_IFBLK,
918 [NF4CHR] = S_IFCHR,
919 [NF4LNK] = S_IFLNK,
920 [NF4SOCK] = S_IFSOCK,
921 [NF4FIFO] = S_IFIFO,
922 [NF4ATTRDIR] = 0,
923 [NF4NAMEDATTR] = 0,
924};
925
926struct compound_hdr {
927 int32_t status;
928 uint32_t nops;
929 __be32 * nops_p;
930 uint32_t taglen;
931 char * tag;
932 uint32_t replen; /* expected reply words */
933 u32 minorversion;
934};
935
936static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
937{
938 __be32 *p = xdr_reserve_space(xdr, nbytes);
939 BUG_ON(!p);
940 return p;
941}
942
943static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
944{
945 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
946}
947
948static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
949{
950 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
951}
952
953static void encode_uint32(struct xdr_stream *xdr, u32 n)
954{
955 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
956}
957
958static void encode_uint64(struct xdr_stream *xdr, u64 n)
959{
960 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
961}
962
963static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
964 const __u32 *bitmap, size_t len)
965{
966 ssize_t ret;
967
968 /* Trim empty words */
969 while (len > 0 && bitmap[len-1] == 0)
970 len--;
971 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len);
972 if (WARN_ON_ONCE(ret < 0))
973 return ret;
974 return len;
975}
976
977static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask,
978 __u32 *res, size_t len)
979{
980 size_t i;
981 __u32 tmp;
982
983 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0))
984 len--;
985 for (i = len; i-- > 0;) {
986 tmp = bitmap[i] & mask[i];
987 res[i] = tmp;
988 }
989 return len;
990}
991
992static void encode_nfs4_seqid(struct xdr_stream *xdr,
993 const struct nfs_seqid *seqid)
994{
995 if (seqid != NULL)
996 encode_uint32(xdr, seqid->sequence->counter);
997 else
998 encode_uint32(xdr, 0);
999}
1000
1001static void encode_compound_hdr(struct xdr_stream *xdr,
1002 struct rpc_rqst *req,
1003 struct compound_hdr *hdr)
1004{
1005 __be32 *p;
1006 struct rpc_auth *auth = req->rq_cred->cr_auth;
1007
1008 /* initialize running count of expected bytes in reply.
1009 * NOTE: the replied tag SHOULD be the same is the one sent,
1010 * but this is not required as a MUST for the server to do so. */
1011 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
1012
1013 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
1014 encode_string(xdr, hdr->taglen, hdr->tag);
1015 p = reserve_space(xdr, 8);
1016 *p++ = cpu_to_be32(hdr->minorversion);
1017 hdr->nops_p = p;
1018 *p = cpu_to_be32(hdr->nops);
1019}
1020
1021static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
1022 uint32_t replen,
1023 struct compound_hdr *hdr)
1024{
1025 encode_uint32(xdr, op);
1026 hdr->nops++;
1027 hdr->replen += replen;
1028}
1029
1030static void encode_nops(struct compound_hdr *hdr)
1031{
1032 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
1033 *hdr->nops_p = htonl(hdr->nops);
1034}
1035
1036static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1037{
1038 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1039}
1040
1041static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1042{
1043 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1044}
1045
1046static __be32 *
1047xdr_encode_nfstime4(__be32 *p, const struct timespec *t)
1048{
1049 p = xdr_encode_hyper(p, (__s64)t->tv_sec);
1050 *p++ = cpu_to_be32(t->tv_nsec);
1051 return p;
1052}
1053
1054static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1055 const struct nfs4_label *label,
1056 const umode_t *umask,
1057 const struct nfs_server *server,
1058 const uint32_t attrmask[])
1059{
1060 char owner_name[IDMAP_NAMESZ];
1061 char owner_group[IDMAP_NAMESZ];
1062 int owner_namelen = 0;
1063 int owner_grouplen = 0;
1064 __be32 *p;
1065 uint32_t len = 0;
1066 uint32_t bmval[3] = { 0 };
1067
1068 /*
1069 * We reserve enough space to write the entire attribute buffer at once.
1070 */
1071 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) {
1072 bmval[0] |= FATTR4_WORD0_SIZE;
1073 len += 8;
1074 }
1075 if (iap->ia_valid & ATTR_MODE) {
1076 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) {
1077 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1078 len += 8;
1079 } else if (attrmask[1] & FATTR4_WORD1_MODE) {
1080 bmval[1] |= FATTR4_WORD1_MODE;
1081 len += 4;
1082 }
1083 }
1084 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) {
1085 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1086 if (owner_namelen < 0) {
1087 dprintk("nfs: couldn't resolve uid %d to string\n",
1088 from_kuid(&init_user_ns, iap->ia_uid));
1089 /* XXX */
1090 strcpy(owner_name, "nobody");
1091 owner_namelen = sizeof("nobody") - 1;
1092 /* goto out; */
1093 }
1094 bmval[1] |= FATTR4_WORD1_OWNER;
1095 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1096 }
1097 if ((iap->ia_valid & ATTR_GID) &&
1098 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) {
1099 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1100 if (owner_grouplen < 0) {
1101 dprintk("nfs: couldn't resolve gid %d to string\n",
1102 from_kgid(&init_user_ns, iap->ia_gid));
1103 strcpy(owner_group, "nobody");
1104 owner_grouplen = sizeof("nobody") - 1;
1105 /* goto out; */
1106 }
1107 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1108 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1109 }
1110 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1111 if (iap->ia_valid & ATTR_ATIME_SET) {
1112 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1113 len += 4 + (nfstime4_maxsz << 2);
1114 } else if (iap->ia_valid & ATTR_ATIME) {
1115 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1116 len += 4;
1117 }
1118 }
1119 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1120 if (iap->ia_valid & ATTR_MTIME_SET) {
1121 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1122 len += 4 + (nfstime4_maxsz << 2);
1123 } else if (iap->ia_valid & ATTR_MTIME) {
1124 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1125 len += 4;
1126 }
1127 }
1128
1129 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1130 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1131 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1132 }
1133
1134 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval));
1135 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len);
1136
1137 if (bmval[0] & FATTR4_WORD0_SIZE)
1138 p = xdr_encode_hyper(p, iap->ia_size);
1139 if (bmval[1] & FATTR4_WORD1_MODE)
1140 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1141 if (bmval[1] & FATTR4_WORD1_OWNER)
1142 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1143 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1144 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1145 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1146 if (iap->ia_valid & ATTR_ATIME_SET) {
1147 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1148 p = xdr_encode_nfstime4(p, &iap->ia_atime);
1149 } else
1150 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1151 }
1152 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1153 if (iap->ia_valid & ATTR_MTIME_SET) {
1154 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1155 p = xdr_encode_nfstime4(p, &iap->ia_mtime);
1156 } else
1157 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1158 }
1159 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1160 *p++ = cpu_to_be32(label->lfs);
1161 *p++ = cpu_to_be32(label->pi);
1162 *p++ = cpu_to_be32(label->len);
1163 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1164 }
1165 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1166 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1167 *p++ = cpu_to_be32(*umask);
1168 }
1169
1170/* out: */
1171}
1172
1173static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1174{
1175 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1176 encode_uint32(xdr, access);
1177}
1178
1179static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1180{
1181 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1182 encode_nfs4_seqid(xdr, arg->seqid);
1183 encode_nfs4_stateid(xdr, &arg->stateid);
1184}
1185
1186static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1187{
1188 __be32 *p;
1189
1190 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1191 p = reserve_space(xdr, 12);
1192 p = xdr_encode_hyper(p, args->offset);
1193 *p = cpu_to_be32(args->count);
1194}
1195
1196static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1197{
1198 __be32 *p;
1199
1200 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1201 encode_uint32(xdr, create->ftype);
1202
1203 switch (create->ftype) {
1204 case NF4LNK:
1205 p = reserve_space(xdr, 4);
1206 *p = cpu_to_be32(create->u.symlink.len);
1207 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1208 create->u.symlink.len);
1209 xdr->buf->flags |= XDRBUF_WRITE;
1210 break;
1211
1212 case NF4BLK: case NF4CHR:
1213 p = reserve_space(xdr, 8);
1214 *p++ = cpu_to_be32(create->u.device.specdata1);
1215 *p = cpu_to_be32(create->u.device.specdata2);
1216 break;
1217
1218 default:
1219 break;
1220 }
1221
1222 encode_string(xdr, create->name->len, create->name->name);
1223 encode_attrs(xdr, create->attrs, create->label, &create->umask,
1224 create->server, create->server->attr_bitmask);
1225}
1226
1227static void encode_getattr(struct xdr_stream *xdr,
1228 const __u32 *bitmap, const __u32 *mask, size_t len,
1229 struct compound_hdr *hdr)
1230{
1231 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz];
1232
1233 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1234 if (mask) {
1235 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap)))
1236 len = ARRAY_SIZE(masked_bitmap);
1237 len = mask_bitmap4(bitmap, mask, masked_bitmap, len);
1238 bitmap = masked_bitmap;
1239 }
1240 xdr_encode_bitmap4(xdr, bitmap, len);
1241}
1242
1243static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1244{
1245 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask,
1246 ARRAY_SIZE(nfs4_fattr_bitmap), hdr);
1247}
1248
1249static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1250 const u32 *open_bitmap,
1251 struct compound_hdr *hdr)
1252{
1253 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr);
1254}
1255
1256static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1257{
1258 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask,
1259 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr);
1260}
1261
1262static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1263{
1264 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask,
1265 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr);
1266}
1267
1268static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1269{
1270 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1271}
1272
1273static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1274{
1275 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1276 encode_string(xdr, name->len, name->name);
1277}
1278
1279static inline int nfs4_lock_type(struct file_lock *fl, int block)
1280{
1281 if (fl->fl_type == F_RDLCK)
1282 return block ? NFS4_READW_LT : NFS4_READ_LT;
1283 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1284}
1285
1286static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1287{
1288 if (fl->fl_end == OFFSET_MAX)
1289 return ~(uint64_t)0;
1290 return fl->fl_end - fl->fl_start + 1;
1291}
1292
1293static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1294{
1295 __be32 *p;
1296
1297 p = reserve_space(xdr, 32);
1298 p = xdr_encode_hyper(p, lowner->clientid);
1299 *p++ = cpu_to_be32(20);
1300 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1301 *p++ = cpu_to_be32(lowner->s_dev);
1302 xdr_encode_hyper(p, lowner->id);
1303}
1304
1305/*
1306 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1307 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1308 */
1309static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1310{
1311 __be32 *p;
1312
1313 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1314 p = reserve_space(xdr, 28);
1315 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1316 *p++ = cpu_to_be32(args->reclaim);
1317 p = xdr_encode_hyper(p, args->fl->fl_start);
1318 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1319 *p = cpu_to_be32(args->new_lock_owner);
1320 if (args->new_lock_owner){
1321 encode_nfs4_seqid(xdr, args->open_seqid);
1322 encode_nfs4_stateid(xdr, &args->open_stateid);
1323 encode_nfs4_seqid(xdr, args->lock_seqid);
1324 encode_lockowner(xdr, &args->lock_owner);
1325 }
1326 else {
1327 encode_nfs4_stateid(xdr, &args->lock_stateid);
1328 encode_nfs4_seqid(xdr, args->lock_seqid);
1329 }
1330}
1331
1332static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1333{
1334 __be32 *p;
1335
1336 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1337 p = reserve_space(xdr, 20);
1338 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1339 p = xdr_encode_hyper(p, args->fl->fl_start);
1340 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1341 encode_lockowner(xdr, &args->lock_owner);
1342}
1343
1344static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1345{
1346 __be32 *p;
1347
1348 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1349 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1350 encode_nfs4_seqid(xdr, args->seqid);
1351 encode_nfs4_stateid(xdr, &args->stateid);
1352 p = reserve_space(xdr, 16);
1353 p = xdr_encode_hyper(p, args->fl->fl_start);
1354 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1355}
1356
1357static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1358{
1359 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1360 encode_lockowner(xdr, lowner);
1361}
1362
1363static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1364{
1365 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1366 encode_string(xdr, name->len, name->name);
1367}
1368
1369static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr)
1370{
1371 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr);
1372}
1373
1374static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1375{
1376 __be32 *p;
1377
1378 p = reserve_space(xdr, 8);
1379 *p++ = cpu_to_be32(share_access);
1380 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1381}
1382
1383static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1384{
1385 __be32 *p;
1386 /*
1387 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1388 * owner 4 = 32
1389 */
1390 encode_nfs4_seqid(xdr, arg->seqid);
1391 encode_share_access(xdr, arg->share_access);
1392 p = reserve_space(xdr, 36);
1393 p = xdr_encode_hyper(p, arg->clientid);
1394 *p++ = cpu_to_be32(24);
1395 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1396 *p++ = cpu_to_be32(arg->server->s_dev);
1397 *p++ = cpu_to_be32(arg->id.uniquifier);
1398 xdr_encode_hyper(p, arg->id.create_time);
1399}
1400
1401static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1402{
1403 __be32 *p;
1404
1405 p = reserve_space(xdr, 4);
1406 switch(arg->createmode) {
1407 case NFS4_CREATE_UNCHECKED:
1408 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1409 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1410 arg->server, arg->server->attr_bitmask);
1411 break;
1412 case NFS4_CREATE_GUARDED:
1413 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1414 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1415 arg->server, arg->server->attr_bitmask);
1416 break;
1417 case NFS4_CREATE_EXCLUSIVE:
1418 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1419 encode_nfs4_verifier(xdr, &arg->u.verifier);
1420 break;
1421 case NFS4_CREATE_EXCLUSIVE4_1:
1422 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1423 encode_nfs4_verifier(xdr, &arg->u.verifier);
1424 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1425 arg->server, arg->server->exclcreat_bitmask);
1426 }
1427}
1428
1429static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1430{
1431 __be32 *p;
1432
1433 p = reserve_space(xdr, 4);
1434 switch (arg->open_flags & O_CREAT) {
1435 case 0:
1436 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1437 break;
1438 default:
1439 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1440 encode_createmode(xdr, arg);
1441 }
1442}
1443
1444static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1445{
1446 __be32 *p;
1447
1448 p = reserve_space(xdr, 4);
1449 switch (delegation_type) {
1450 case 0:
1451 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1452 break;
1453 case FMODE_READ:
1454 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1455 break;
1456 case FMODE_WRITE|FMODE_READ:
1457 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1458 break;
1459 default:
1460 BUG();
1461 }
1462}
1463
1464static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1465{
1466 __be32 *p;
1467
1468 p = reserve_space(xdr, 4);
1469 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1470 encode_string(xdr, name->len, name->name);
1471}
1472
1473static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1474{
1475 __be32 *p;
1476
1477 p = reserve_space(xdr, 4);
1478 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1479 encode_delegation_type(xdr, type);
1480}
1481
1482static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1483{
1484 __be32 *p;
1485
1486 p = reserve_space(xdr, 4);
1487 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1488 encode_nfs4_stateid(xdr, stateid);
1489 encode_string(xdr, name->len, name->name);
1490}
1491
1492static inline void encode_claim_fh(struct xdr_stream *xdr)
1493{
1494 __be32 *p;
1495
1496 p = reserve_space(xdr, 4);
1497 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1498}
1499
1500static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1501{
1502 __be32 *p;
1503
1504 p = reserve_space(xdr, 4);
1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1506 encode_nfs4_stateid(xdr, stateid);
1507}
1508
1509static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1510{
1511 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1512 encode_openhdr(xdr, arg);
1513 encode_opentype(xdr, arg);
1514 switch (arg->claim) {
1515 case NFS4_OPEN_CLAIM_NULL:
1516 encode_claim_null(xdr, arg->name);
1517 break;
1518 case NFS4_OPEN_CLAIM_PREVIOUS:
1519 encode_claim_previous(xdr, arg->u.delegation_type);
1520 break;
1521 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1522 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1523 break;
1524 case NFS4_OPEN_CLAIM_FH:
1525 encode_claim_fh(xdr);
1526 break;
1527 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1528 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1529 break;
1530 default:
1531 BUG();
1532 }
1533}
1534
1535static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1536{
1537 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1538 encode_nfs4_stateid(xdr, arg->stateid);
1539 encode_nfs4_seqid(xdr, arg->seqid);
1540}
1541
1542static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1543{
1544 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1545 encode_nfs4_stateid(xdr, &arg->stateid);
1546 encode_nfs4_seqid(xdr, arg->seqid);
1547 encode_share_access(xdr, arg->share_access);
1548}
1549
1550static void
1551encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1552{
1553 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1554 encode_string(xdr, fh->size, fh->data);
1555}
1556
1557static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1558{
1559 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1560}
1561
1562static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1563 struct compound_hdr *hdr)
1564{
1565 __be32 *p;
1566
1567 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1568 encode_nfs4_stateid(xdr, &args->stateid);
1569
1570 p = reserve_space(xdr, 12);
1571 p = xdr_encode_hyper(p, args->offset);
1572 *p = cpu_to_be32(args->count);
1573}
1574
1575static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1576{
1577 uint32_t attrs[3] = {
1578 FATTR4_WORD0_RDATTR_ERROR,
1579 FATTR4_WORD1_MOUNTED_ON_FILEID,
1580 };
1581 uint32_t dircount = readdir->count >> 1;
1582 __be32 *p, verf[2];
1583 uint32_t attrlen = 0;
1584 unsigned int i;
1585
1586 if (readdir->plus) {
1587 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1588 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1589 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1590 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1591 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1592 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1593 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1594 dircount >>= 1;
1595 }
1596 /* Use mounted_on_fileid only if the server supports it */
1597 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1598 attrs[0] |= FATTR4_WORD0_FILEID;
1599 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1600 attrs[i] &= readdir->bitmask[i];
1601 if (attrs[i] != 0)
1602 attrlen = i+1;
1603 }
1604
1605 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1606 encode_uint64(xdr, readdir->cookie);
1607 encode_nfs4_verifier(xdr, &readdir->verifier);
1608 p = reserve_space(xdr, 12 + (attrlen << 2));
1609 *p++ = cpu_to_be32(dircount);
1610 *p++ = cpu_to_be32(readdir->count);
1611 *p++ = cpu_to_be32(attrlen);
1612 for (i = 0; i < attrlen; i++)
1613 *p++ = cpu_to_be32(attrs[i]);
1614 memcpy(verf, readdir->verifier.data, sizeof(verf));
1615
1616 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1617 __func__,
1618 (unsigned long long)readdir->cookie,
1619 verf[0], verf[1],
1620 attrs[0] & readdir->bitmask[0],
1621 attrs[1] & readdir->bitmask[1],
1622 attrs[2] & readdir->bitmask[2]);
1623}
1624
1625static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1626{
1627 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1628}
1629
1630static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1631{
1632 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1633 encode_string(xdr, name->len, name->name);
1634}
1635
1636static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1637{
1638 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1639 encode_string(xdr, oldname->len, oldname->name);
1640 encode_string(xdr, newname->len, newname->name);
1641}
1642
1643static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1644 struct compound_hdr *hdr)
1645{
1646 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1647 encode_uint64(xdr, clid);
1648}
1649
1650static void
1651encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1652{
1653 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1654}
1655
1656static void
1657encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg,
1658 struct compound_hdr *hdr)
1659{
1660 __be32 *p;
1661
1662 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1663 encode_nfs4_stateid(xdr, &zero_stateid);
1664 p = reserve_space(xdr, 2*4);
1665 *p++ = cpu_to_be32(1);
1666 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1667 p = reserve_space(xdr, 4);
1668 *p = cpu_to_be32(arg->acl_len);
1669 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1670}
1671
1672static void
1673encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1674{
1675 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1676}
1677
1678static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1679{
1680 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1681 encode_nfs4_stateid(xdr, &arg->stateid);
1682 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1683 server->attr_bitmask);
1684}
1685
1686static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1687{
1688 __be32 *p;
1689
1690 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1691 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1692
1693 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1694 setclientid->sc_clnt->cl_owner_id);
1695 p = reserve_space(xdr, 4);
1696 *p = cpu_to_be32(setclientid->sc_prog);
1697 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1698 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1699 p = reserve_space(xdr, 4);
1700 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1701}
1702
1703static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1704{
1705 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1706 decode_setclientid_confirm_maxsz, hdr);
1707 encode_uint64(xdr, arg->clientid);
1708 encode_nfs4_verifier(xdr, &arg->confirm);
1709}
1710
1711static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1712 struct compound_hdr *hdr)
1713{
1714 __be32 *p;
1715
1716 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1717 encode_nfs4_stateid(xdr, &args->stateid);
1718
1719 p = reserve_space(xdr, 16);
1720 p = xdr_encode_hyper(p, args->offset);
1721 *p++ = cpu_to_be32(args->stable);
1722 *p = cpu_to_be32(args->count);
1723
1724 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1725}
1726
1727static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1728{
1729 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1730 encode_nfs4_stateid(xdr, stateid);
1731}
1732
1733static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1734{
1735 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1736 encode_string(xdr, name->len, name->name);
1737}
1738
1739#if defined(CONFIG_NFS_V4_1)
1740/* NFSv4.1 operations */
1741static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1742 const struct nfs41_bind_conn_to_session_args *args,
1743 struct compound_hdr *hdr)
1744{
1745 __be32 *p;
1746
1747 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1748 decode_bind_conn_to_session_maxsz, hdr);
1749 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1750 p = xdr_reserve_space(xdr, 8);
1751 *p++ = cpu_to_be32(args->dir);
1752 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1753}
1754
1755static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1756{
1757 unsigned int i;
1758 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1759 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1760 encode_uint32(xdr, op_map->u.words[i]);
1761}
1762
1763static void encode_exchange_id(struct xdr_stream *xdr,
1764 const struct nfs41_exchange_id_args *args,
1765 struct compound_hdr *hdr)
1766{
1767 __be32 *p;
1768 char impl_name[IMPL_NAME_LIMIT];
1769 int len = 0;
1770
1771 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1772 encode_nfs4_verifier(xdr, &args->verifier);
1773
1774 encode_string(xdr, strlen(args->client->cl_owner_id),
1775 args->client->cl_owner_id);
1776
1777 encode_uint32(xdr, args->flags);
1778 encode_uint32(xdr, args->state_protect.how);
1779
1780 switch (args->state_protect.how) {
1781 case SP4_NONE:
1782 break;
1783 case SP4_MACH_CRED:
1784 encode_op_map(xdr, &args->state_protect.enforce);
1785 encode_op_map(xdr, &args->state_protect.allow);
1786 break;
1787 default:
1788 WARN_ON_ONCE(1);
1789 break;
1790 }
1791
1792 if (send_implementation_id &&
1793 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1794 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1795 <= sizeof(impl_name) + 1)
1796 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1797 utsname()->sysname, utsname()->release,
1798 utsname()->version, utsname()->machine);
1799
1800 if (len > 0) {
1801 encode_uint32(xdr, 1); /* implementation id array length=1 */
1802
1803 encode_string(xdr,
1804 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1805 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1806 encode_string(xdr, len, impl_name);
1807 /* just send zeros for nii_date - the date is in nii_name */
1808 p = reserve_space(xdr, 12);
1809 p = xdr_encode_hyper(p, 0);
1810 *p = cpu_to_be32(0);
1811 } else
1812 encode_uint32(xdr, 0); /* implementation id array length=0 */
1813}
1814
1815static void encode_create_session(struct xdr_stream *xdr,
1816 const struct nfs41_create_session_args *args,
1817 struct compound_hdr *hdr)
1818{
1819 __be32 *p;
1820 struct nfs_client *clp = args->client;
1821 struct rpc_clnt *clnt = clp->cl_rpcclient;
1822 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1823 u32 max_resp_sz_cached;
1824
1825 /*
1826 * Assumes OPEN is the biggest non-idempotent compound.
1827 * 2 is the verifier.
1828 */
1829 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1830 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1831
1832 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1833 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1834 p = xdr_encode_hyper(p, args->clientid);
1835 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1836 *p++ = cpu_to_be32(args->flags); /*flags */
1837
1838 /* Fore Channel */
1839 *p++ = cpu_to_be32(0); /* header padding size */
1840 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1841 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1842 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1843 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1844 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1845 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1846
1847 /* Back Channel */
1848 *p++ = cpu_to_be32(0); /* header padding size */
1849 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1850 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1851 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1852 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1853 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1854 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1855
1856 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1857 *p++ = cpu_to_be32(1);
1858 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1859
1860 /* authsys_parms rfc1831 */
1861 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1862 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1863 *p++ = cpu_to_be32(0); /* UID */
1864 *p++ = cpu_to_be32(0); /* GID */
1865 *p = cpu_to_be32(0); /* No more gids */
1866}
1867
1868static void encode_destroy_session(struct xdr_stream *xdr,
1869 const struct nfs4_session *session,
1870 struct compound_hdr *hdr)
1871{
1872 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1873 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1874}
1875
1876static void encode_destroy_clientid(struct xdr_stream *xdr,
1877 uint64_t clientid,
1878 struct compound_hdr *hdr)
1879{
1880 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1881 encode_uint64(xdr, clientid);
1882}
1883
1884static void encode_reclaim_complete(struct xdr_stream *xdr,
1885 const struct nfs41_reclaim_complete_args *args,
1886 struct compound_hdr *hdr)
1887{
1888 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1889 encode_uint32(xdr, args->one_fs);
1890}
1891#endif /* CONFIG_NFS_V4_1 */
1892
1893static void encode_sequence(struct xdr_stream *xdr,
1894 const struct nfs4_sequence_args *args,
1895 struct compound_hdr *hdr)
1896{
1897#if defined(CONFIG_NFS_V4_1)
1898 struct nfs4_session *session;
1899 struct nfs4_slot_table *tp;
1900 struct nfs4_slot *slot = args->sa_slot;
1901 __be32 *p;
1902
1903 tp = slot->table;
1904 session = tp->session;
1905 if (!session)
1906 return;
1907
1908 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1909
1910 /*
1911 * Sessionid + seqid + slotid + max slotid + cache_this
1912 */
1913 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1914 "max_slotid=%d cache_this=%d\n",
1915 __func__,
1916 ((u32 *)session->sess_id.data)[0],
1917 ((u32 *)session->sess_id.data)[1],
1918 ((u32 *)session->sess_id.data)[2],
1919 ((u32 *)session->sess_id.data)[3],
1920 slot->seq_nr, slot->slot_nr,
1921 tp->highest_used_slotid, args->sa_cache_this);
1922 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1923 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1924 *p++ = cpu_to_be32(slot->seq_nr);
1925 *p++ = cpu_to_be32(slot->slot_nr);
1926 *p++ = cpu_to_be32(tp->highest_used_slotid);
1927 *p = cpu_to_be32(args->sa_cache_this);
1928#endif /* CONFIG_NFS_V4_1 */
1929}
1930
1931#ifdef CONFIG_NFS_V4_1
1932static void
1933encode_getdeviceinfo(struct xdr_stream *xdr,
1934 const struct nfs4_getdeviceinfo_args *args,
1935 struct compound_hdr *hdr)
1936{
1937 __be32 *p;
1938
1939 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1940 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1941 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1942 NFS4_DEVICEID4_SIZE);
1943 *p++ = cpu_to_be32(args->pdev->layout_type);
1944 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1945
1946 p = reserve_space(xdr, 4 + 4);
1947 *p++ = cpu_to_be32(1); /* bitmap length */
1948 *p++ = cpu_to_be32(args->notify_types);
1949}
1950
1951static void
1952encode_layoutget(struct xdr_stream *xdr,
1953 const struct nfs4_layoutget_args *args,
1954 struct compound_hdr *hdr)
1955{
1956 __be32 *p;
1957
1958 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1959 p = reserve_space(xdr, 36);
1960 *p++ = cpu_to_be32(0); /* Signal layout available */
1961 *p++ = cpu_to_be32(args->type);
1962 *p++ = cpu_to_be32(args->range.iomode);
1963 p = xdr_encode_hyper(p, args->range.offset);
1964 p = xdr_encode_hyper(p, args->range.length);
1965 p = xdr_encode_hyper(p, args->minlength);
1966 encode_nfs4_stateid(xdr, &args->stateid);
1967 encode_uint32(xdr, args->maxcount);
1968
1969 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1970 __func__,
1971 args->type,
1972 args->range.iomode,
1973 (unsigned long)args->range.offset,
1974 (unsigned long)args->range.length,
1975 args->maxcount);
1976}
1977
1978static int
1979encode_layoutcommit(struct xdr_stream *xdr,
1980 struct inode *inode,
1981 const struct nfs4_layoutcommit_args *args,
1982 struct compound_hdr *hdr)
1983{
1984 __be32 *p;
1985
1986 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1987 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1988
1989 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1990 p = reserve_space(xdr, 20);
1991 /* Only whole file layouts */
1992 p = xdr_encode_hyper(p, 0); /* offset */
1993 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1994 *p = cpu_to_be32(0); /* reclaim */
1995 encode_nfs4_stateid(xdr, &args->stateid);
1996 if (args->lastbytewritten != U64_MAX) {
1997 p = reserve_space(xdr, 20);
1998 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1999 p = xdr_encode_hyper(p, args->lastbytewritten);
2000 } else {
2001 p = reserve_space(xdr, 12);
2002 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2003 }
2004 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2005 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2006
2007 encode_uint32(xdr, args->layoutupdate_len);
2008 if (args->layoutupdate_pages)
2009 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2010 args->layoutupdate_len);
2011
2012 return 0;
2013}
2014
2015static void
2016encode_layoutreturn(struct xdr_stream *xdr,
2017 const struct nfs4_layoutreturn_args *args,
2018 struct compound_hdr *hdr)
2019{
2020 __be32 *p;
2021
2022 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2023 p = reserve_space(xdr, 16);
2024 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2025 *p++ = cpu_to_be32(args->layout_type);
2026 *p++ = cpu_to_be32(args->range.iomode);
2027 *p = cpu_to_be32(RETURN_FILE);
2028 p = reserve_space(xdr, 16);
2029 p = xdr_encode_hyper(p, args->range.offset);
2030 p = xdr_encode_hyper(p, args->range.length);
2031 spin_lock(&args->inode->i_lock);
2032 encode_nfs4_stateid(xdr, &args->stateid);
2033 spin_unlock(&args->inode->i_lock);
2034 if (args->ld_private->ops && args->ld_private->ops->encode)
2035 args->ld_private->ops->encode(xdr, args, args->ld_private);
2036 else
2037 encode_uint32(xdr, 0);
2038}
2039
2040static int
2041encode_secinfo_no_name(struct xdr_stream *xdr,
2042 const struct nfs41_secinfo_no_name_args *args,
2043 struct compound_hdr *hdr)
2044{
2045 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2046 encode_uint32(xdr, args->style);
2047 return 0;
2048}
2049
2050static void encode_test_stateid(struct xdr_stream *xdr,
2051 const struct nfs41_test_stateid_args *args,
2052 struct compound_hdr *hdr)
2053{
2054 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2055 encode_uint32(xdr, 1);
2056 encode_nfs4_stateid(xdr, args->stateid);
2057}
2058
2059static void encode_free_stateid(struct xdr_stream *xdr,
2060 const struct nfs41_free_stateid_args *args,
2061 struct compound_hdr *hdr)
2062{
2063 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2064 encode_nfs4_stateid(xdr, &args->stateid);
2065}
2066#else
2067static inline void
2068encode_layoutreturn(struct xdr_stream *xdr,
2069 const struct nfs4_layoutreturn_args *args,
2070 struct compound_hdr *hdr)
2071{
2072}
2073#endif /* CONFIG_NFS_V4_1 */
2074
2075/*
2076 * END OF "GENERIC" ENCODE ROUTINES.
2077 */
2078
2079static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2080{
2081#if defined(CONFIG_NFS_V4_1)
2082 struct nfs4_session *session = args->sa_slot->table->session;
2083 if (session)
2084 return session->clp->cl_mvops->minor_version;
2085#endif /* CONFIG_NFS_V4_1 */
2086 return 0;
2087}
2088
2089/*
2090 * Encode an ACCESS request
2091 */
2092static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2093 const void *data)
2094{
2095 const struct nfs4_accessargs *args = data;
2096 struct compound_hdr hdr = {
2097 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2098 };
2099
2100 encode_compound_hdr(xdr, req, &hdr);
2101 encode_sequence(xdr, &args->seq_args, &hdr);
2102 encode_putfh(xdr, args->fh, &hdr);
2103 encode_access(xdr, args->access, &hdr);
2104 if (args->bitmask)
2105 encode_getfattr(xdr, args->bitmask, &hdr);
2106 encode_nops(&hdr);
2107}
2108
2109/*
2110 * Encode LOOKUP request
2111 */
2112static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2113 const void *data)
2114{
2115 const struct nfs4_lookup_arg *args = data;
2116 struct compound_hdr hdr = {
2117 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2118 };
2119
2120 encode_compound_hdr(xdr, req, &hdr);
2121 encode_sequence(xdr, &args->seq_args, &hdr);
2122 encode_putfh(xdr, args->dir_fh, &hdr);
2123 encode_lookup(xdr, args->name, &hdr);
2124 encode_getfh(xdr, &hdr);
2125 encode_getfattr(xdr, args->bitmask, &hdr);
2126 encode_nops(&hdr);
2127}
2128
2129/*
2130 * Encode LOOKUPP request
2131 */
2132static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2133 const void *data)
2134{
2135 const struct nfs4_lookupp_arg *args = data;
2136 struct compound_hdr hdr = {
2137 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2138 };
2139
2140 encode_compound_hdr(xdr, req, &hdr);
2141 encode_sequence(xdr, &args->seq_args, &hdr);
2142 encode_putfh(xdr, args->fh, &hdr);
2143 encode_lookupp(xdr, &hdr);
2144 encode_getfh(xdr, &hdr);
2145 encode_getfattr(xdr, args->bitmask, &hdr);
2146 encode_nops(&hdr);
2147}
2148
2149/*
2150 * Encode LOOKUP_ROOT request
2151 */
2152static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2153 struct xdr_stream *xdr,
2154 const void *data)
2155{
2156 const struct nfs4_lookup_root_arg *args = data;
2157 struct compound_hdr hdr = {
2158 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2159 };
2160
2161 encode_compound_hdr(xdr, req, &hdr);
2162 encode_sequence(xdr, &args->seq_args, &hdr);
2163 encode_putrootfh(xdr, &hdr);
2164 encode_getfh(xdr, &hdr);
2165 encode_getfattr(xdr, args->bitmask, &hdr);
2166 encode_nops(&hdr);
2167}
2168
2169/*
2170 * Encode REMOVE request
2171 */
2172static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2173 const void *data)
2174{
2175 const struct nfs_removeargs *args = data;
2176 struct compound_hdr hdr = {
2177 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2178 };
2179
2180 encode_compound_hdr(xdr, req, &hdr);
2181 encode_sequence(xdr, &args->seq_args, &hdr);
2182 encode_putfh(xdr, args->fh, &hdr);
2183 encode_remove(xdr, &args->name, &hdr);
2184 encode_nops(&hdr);
2185}
2186
2187/*
2188 * Encode RENAME request
2189 */
2190static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2191 const void *data)
2192{
2193 const struct nfs_renameargs *args = data;
2194 struct compound_hdr hdr = {
2195 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2196 };
2197
2198 encode_compound_hdr(xdr, req, &hdr);
2199 encode_sequence(xdr, &args->seq_args, &hdr);
2200 encode_putfh(xdr, args->old_dir, &hdr);
2201 encode_savefh(xdr, &hdr);
2202 encode_putfh(xdr, args->new_dir, &hdr);
2203 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2204 encode_nops(&hdr);
2205}
2206
2207/*
2208 * Encode LINK request
2209 */
2210static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2211 const void *data)
2212{
2213 const struct nfs4_link_arg *args = data;
2214 struct compound_hdr hdr = {
2215 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2216 };
2217
2218 encode_compound_hdr(xdr, req, &hdr);
2219 encode_sequence(xdr, &args->seq_args, &hdr);
2220 encode_putfh(xdr, args->fh, &hdr);
2221 encode_savefh(xdr, &hdr);
2222 encode_putfh(xdr, args->dir_fh, &hdr);
2223 encode_link(xdr, args->name, &hdr);
2224 encode_restorefh(xdr, &hdr);
2225 encode_getfattr(xdr, args->bitmask, &hdr);
2226 encode_nops(&hdr);
2227}
2228
2229/*
2230 * Encode CREATE request
2231 */
2232static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2233 const void *data)
2234{
2235 const struct nfs4_create_arg *args = data;
2236 struct compound_hdr hdr = {
2237 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2238 };
2239
2240 encode_compound_hdr(xdr, req, &hdr);
2241 encode_sequence(xdr, &args->seq_args, &hdr);
2242 encode_putfh(xdr, args->dir_fh, &hdr);
2243 encode_create(xdr, args, &hdr);
2244 encode_getfh(xdr, &hdr);
2245 encode_getfattr(xdr, args->bitmask, &hdr);
2246 encode_nops(&hdr);
2247}
2248
2249/*
2250 * Encode SYMLINK request
2251 */
2252static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2253 const void *data)
2254{
2255 const struct nfs4_create_arg *args = data;
2256
2257 nfs4_xdr_enc_create(req, xdr, args);
2258}
2259
2260/*
2261 * Encode GETATTR request
2262 */
2263static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2264 const void *data)
2265{
2266 const struct nfs4_getattr_arg *args = data;
2267 struct compound_hdr hdr = {
2268 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2269 };
2270
2271 encode_compound_hdr(xdr, req, &hdr);
2272 encode_sequence(xdr, &args->seq_args, &hdr);
2273 encode_putfh(xdr, args->fh, &hdr);
2274 encode_getfattr(xdr, args->bitmask, &hdr);
2275 encode_nops(&hdr);
2276}
2277
2278/*
2279 * Encode a CLOSE request
2280 */
2281static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2282 const void *data)
2283{
2284 const struct nfs_closeargs *args = data;
2285 struct compound_hdr hdr = {
2286 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2287 };
2288
2289 encode_compound_hdr(xdr, req, &hdr);
2290 encode_sequence(xdr, &args->seq_args, &hdr);
2291 encode_putfh(xdr, args->fh, &hdr);
2292 if (args->lr_args)
2293 encode_layoutreturn(xdr, args->lr_args, &hdr);
2294 if (args->bitmask != NULL)
2295 encode_getfattr(xdr, args->bitmask, &hdr);
2296 encode_close(xdr, args, &hdr);
2297 encode_nops(&hdr);
2298}
2299
2300/*
2301 * Encode an OPEN request
2302 */
2303static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2304 const void *data)
2305{
2306 const struct nfs_openargs *args = data;
2307 struct compound_hdr hdr = {
2308 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2309 };
2310
2311 encode_compound_hdr(xdr, req, &hdr);
2312 encode_sequence(xdr, &args->seq_args, &hdr);
2313 encode_putfh(xdr, args->fh, &hdr);
2314 encode_open(xdr, args, &hdr);
2315 encode_getfh(xdr, &hdr);
2316 if (args->access)
2317 encode_access(xdr, args->access, &hdr);
2318 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2319 encode_nops(&hdr);
2320}
2321
2322/*
2323 * Encode an OPEN_CONFIRM request
2324 */
2325static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2326 struct xdr_stream *xdr,
2327 const void *data)
2328{
2329 const struct nfs_open_confirmargs *args = data;
2330 struct compound_hdr hdr = {
2331 .nops = 0,
2332 };
2333
2334 encode_compound_hdr(xdr, req, &hdr);
2335 encode_putfh(xdr, args->fh, &hdr);
2336 encode_open_confirm(xdr, args, &hdr);
2337 encode_nops(&hdr);
2338}
2339
2340/*
2341 * Encode an OPEN request with no attributes.
2342 */
2343static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2344 struct xdr_stream *xdr,
2345 const void *data)
2346{
2347 const struct nfs_openargs *args = data;
2348 struct compound_hdr hdr = {
2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2350 };
2351
2352 encode_compound_hdr(xdr, req, &hdr);
2353 encode_sequence(xdr, &args->seq_args, &hdr);
2354 encode_putfh(xdr, args->fh, &hdr);
2355 encode_open(xdr, args, &hdr);
2356 if (args->access)
2357 encode_access(xdr, args->access, &hdr);
2358 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2359 encode_nops(&hdr);
2360}
2361
2362/*
2363 * Encode an OPEN_DOWNGRADE request
2364 */
2365static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2366 struct xdr_stream *xdr,
2367 const void *data)
2368{
2369 const struct nfs_closeargs *args = data;
2370 struct compound_hdr hdr = {
2371 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2372 };
2373
2374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_sequence(xdr, &args->seq_args, &hdr);
2376 encode_putfh(xdr, args->fh, &hdr);
2377 if (args->lr_args)
2378 encode_layoutreturn(xdr, args->lr_args, &hdr);
2379 encode_open_downgrade(xdr, args, &hdr);
2380 encode_nops(&hdr);
2381}
2382
2383/*
2384 * Encode a LOCK request
2385 */
2386static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2387 const void *data)
2388{
2389 const struct nfs_lock_args *args = data;
2390 struct compound_hdr hdr = {
2391 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2392 };
2393
2394 encode_compound_hdr(xdr, req, &hdr);
2395 encode_sequence(xdr, &args->seq_args, &hdr);
2396 encode_putfh(xdr, args->fh, &hdr);
2397 encode_lock(xdr, args, &hdr);
2398 encode_nops(&hdr);
2399}
2400
2401/*
2402 * Encode a LOCKT request
2403 */
2404static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2405 const void *data)
2406{
2407 const struct nfs_lockt_args *args = data;
2408 struct compound_hdr hdr = {
2409 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2410 };
2411
2412 encode_compound_hdr(xdr, req, &hdr);
2413 encode_sequence(xdr, &args->seq_args, &hdr);
2414 encode_putfh(xdr, args->fh, &hdr);
2415 encode_lockt(xdr, args, &hdr);
2416 encode_nops(&hdr);
2417}
2418
2419/*
2420 * Encode a LOCKU request
2421 */
2422static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2423 const void *data)
2424{
2425 const struct nfs_locku_args *args = data;
2426 struct compound_hdr hdr = {
2427 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2428 };
2429
2430 encode_compound_hdr(xdr, req, &hdr);
2431 encode_sequence(xdr, &args->seq_args, &hdr);
2432 encode_putfh(xdr, args->fh, &hdr);
2433 encode_locku(xdr, args, &hdr);
2434 encode_nops(&hdr);
2435}
2436
2437static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2438 struct xdr_stream *xdr,
2439 const void *data)
2440{
2441 const struct nfs_release_lockowner_args *args = data;
2442 struct compound_hdr hdr = {
2443 .minorversion = 0,
2444 };
2445
2446 encode_compound_hdr(xdr, req, &hdr);
2447 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2448 encode_nops(&hdr);
2449}
2450
2451/*
2452 * Encode a READLINK request
2453 */
2454static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2455 const void *data)
2456{
2457 const struct nfs4_readlink *args = data;
2458 struct compound_hdr hdr = {
2459 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2460 };
2461
2462 encode_compound_hdr(xdr, req, &hdr);
2463 encode_sequence(xdr, &args->seq_args, &hdr);
2464 encode_putfh(xdr, args->fh, &hdr);
2465 encode_readlink(xdr, args, req, &hdr);
2466
2467 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2468 args->pgbase, args->pglen);
2469 encode_nops(&hdr);
2470}
2471
2472/*
2473 * Encode a READDIR request
2474 */
2475static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2476 const void *data)
2477{
2478 const struct nfs4_readdir_arg *args = data;
2479 struct compound_hdr hdr = {
2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2481 };
2482
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 encode_readdir(xdr, args, req, &hdr);
2487
2488 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2489 args->pgbase, args->count);
2490 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2491 __func__, hdr.replen << 2, args->pages,
2492 args->pgbase, args->count);
2493 encode_nops(&hdr);
2494}
2495
2496/*
2497 * Encode a READ request
2498 */
2499static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2500 const void *data)
2501{
2502 const struct nfs_pgio_args *args = data;
2503 struct compound_hdr hdr = {
2504 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2505 };
2506
2507 encode_compound_hdr(xdr, req, &hdr);
2508 encode_sequence(xdr, &args->seq_args, &hdr);
2509 encode_putfh(xdr, args->fh, &hdr);
2510 encode_read(xdr, args, &hdr);
2511
2512 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2513 args->pages, args->pgbase, args->count);
2514 req->rq_rcv_buf.flags |= XDRBUF_READ;
2515 encode_nops(&hdr);
2516}
2517
2518/*
2519 * Encode an SETATTR request
2520 */
2521static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2522 const void *data)
2523{
2524 const struct nfs_setattrargs *args = data;
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_setattr(xdr, args, args->server, &hdr);
2533 encode_getfattr(xdr, args->bitmask, &hdr);
2534 encode_nops(&hdr);
2535}
2536
2537/*
2538 * Encode a GETACL request
2539 */
2540static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2541 const void *data)
2542{
2543 const struct nfs_getaclargs *args = data;
2544 struct compound_hdr hdr = {
2545 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2546 };
2547 const __u32 nfs4_acl_bitmap[1] = {
2548 [0] = FATTR4_WORD0_ACL,
2549 };
2550 uint32_t replen;
2551
2552 encode_compound_hdr(xdr, req, &hdr);
2553 encode_sequence(xdr, &args->seq_args, &hdr);
2554 encode_putfh(xdr, args->fh, &hdr);
2555 replen = hdr.replen + op_decode_hdr_maxsz;
2556 encode_getattr(xdr, nfs4_acl_bitmap, NULL,
2557 ARRAY_SIZE(nfs4_acl_bitmap), &hdr);
2558
2559 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2560 args->acl_pages, 0, args->acl_len);
2561
2562 encode_nops(&hdr);
2563}
2564
2565/*
2566 * Encode a WRITE request
2567 */
2568static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2569 const void *data)
2570{
2571 const struct nfs_pgio_args *args = data;
2572 struct compound_hdr hdr = {
2573 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2574 };
2575
2576 encode_compound_hdr(xdr, req, &hdr);
2577 encode_sequence(xdr, &args->seq_args, &hdr);
2578 encode_putfh(xdr, args->fh, &hdr);
2579 encode_write(xdr, args, &hdr);
2580 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2581 if (args->bitmask)
2582 encode_getfattr(xdr, args->bitmask, &hdr);
2583 encode_nops(&hdr);
2584}
2585
2586/*
2587 * a COMMIT request
2588 */
2589static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2590 const void *data)
2591{
2592 const struct nfs_commitargs *args = data;
2593 struct compound_hdr hdr = {
2594 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2595 };
2596
2597 encode_compound_hdr(xdr, req, &hdr);
2598 encode_sequence(xdr, &args->seq_args, &hdr);
2599 encode_putfh(xdr, args->fh, &hdr);
2600 encode_commit(xdr, args, &hdr);
2601 encode_nops(&hdr);
2602}
2603
2604/*
2605 * FSINFO request
2606 */
2607static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2608 const void *data)
2609{
2610 const struct nfs4_fsinfo_arg *args = data;
2611 struct compound_hdr hdr = {
2612 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2613 };
2614
2615 encode_compound_hdr(xdr, req, &hdr);
2616 encode_sequence(xdr, &args->seq_args, &hdr);
2617 encode_putfh(xdr, args->fh, &hdr);
2618 encode_fsinfo(xdr, args->bitmask, &hdr);
2619 encode_nops(&hdr);
2620}
2621
2622/*
2623 * a PATHCONF request
2624 */
2625static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2626 const void *data)
2627{
2628 const struct nfs4_pathconf_arg *args = data;
2629 struct compound_hdr hdr = {
2630 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2631 };
2632
2633 encode_compound_hdr(xdr, req, &hdr);
2634 encode_sequence(xdr, &args->seq_args, &hdr);
2635 encode_putfh(xdr, args->fh, &hdr);
2636 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask,
2637 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr);
2638 encode_nops(&hdr);
2639}
2640
2641/*
2642 * a STATFS request
2643 */
2644static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2645 const void *data)
2646{
2647 const struct nfs4_statfs_arg *args = data;
2648 struct compound_hdr hdr = {
2649 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2650 };
2651
2652 encode_compound_hdr(xdr, req, &hdr);
2653 encode_sequence(xdr, &args->seq_args, &hdr);
2654 encode_putfh(xdr, args->fh, &hdr);
2655 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask,
2656 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr);
2657 encode_nops(&hdr);
2658}
2659
2660/*
2661 * GETATTR_BITMAP request
2662 */
2663static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2664 struct xdr_stream *xdr,
2665 const void *data)
2666{
2667 const struct nfs4_server_caps_arg *args = data;
2668 const u32 *bitmask = args->bitmask;
2669 struct compound_hdr hdr = {
2670 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2671 };
2672
2673 encode_compound_hdr(xdr, req, &hdr);
2674 encode_sequence(xdr, &args->seq_args, &hdr);
2675 encode_putfh(xdr, args->fhandle, &hdr);
2676 encode_getattr(xdr, bitmask, NULL, 3, &hdr);
2677 encode_nops(&hdr);
2678}
2679
2680/*
2681 * a RENEW request
2682 */
2683static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2684 const void *data)
2685
2686{
2687 const struct nfs_client *clp = data;
2688 struct compound_hdr hdr = {
2689 .nops = 0,
2690 };
2691
2692 encode_compound_hdr(xdr, req, &hdr);
2693 encode_renew(xdr, clp->cl_clientid, &hdr);
2694 encode_nops(&hdr);
2695}
2696
2697/*
2698 * a SETCLIENTID request
2699 */
2700static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2701 struct xdr_stream *xdr,
2702 const void *data)
2703{
2704 const struct nfs4_setclientid *sc = data;
2705 struct compound_hdr hdr = {
2706 .nops = 0,
2707 };
2708
2709 encode_compound_hdr(xdr, req, &hdr);
2710 encode_setclientid(xdr, sc, &hdr);
2711 encode_nops(&hdr);
2712}
2713
2714/*
2715 * a SETCLIENTID_CONFIRM request
2716 */
2717static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2718 struct xdr_stream *xdr,
2719 const void *data)
2720{
2721 const struct nfs4_setclientid_res *arg = data;
2722 struct compound_hdr hdr = {
2723 .nops = 0,
2724 };
2725
2726 encode_compound_hdr(xdr, req, &hdr);
2727 encode_setclientid_confirm(xdr, arg, &hdr);
2728 encode_nops(&hdr);
2729}
2730
2731/*
2732 * DELEGRETURN request
2733 */
2734static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2735 struct xdr_stream *xdr,
2736 const void *data)
2737{
2738 const struct nfs4_delegreturnargs *args = data;
2739 struct compound_hdr hdr = {
2740 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2741 };
2742
2743 encode_compound_hdr(xdr, req, &hdr);
2744 encode_sequence(xdr, &args->seq_args, &hdr);
2745 encode_putfh(xdr, args->fhandle, &hdr);
2746 if (args->lr_args)
2747 encode_layoutreturn(xdr, args->lr_args, &hdr);
2748 if (args->bitmask)
2749 encode_getfattr(xdr, args->bitmask, &hdr);
2750 encode_delegreturn(xdr, args->stateid, &hdr);
2751 encode_nops(&hdr);
2752}
2753
2754/*
2755 * Encode FS_LOCATIONS request
2756 */
2757static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2758 struct xdr_stream *xdr,
2759 const void *data)
2760{
2761 const struct nfs4_fs_locations_arg *args = data;
2762 struct compound_hdr hdr = {
2763 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2764 };
2765 uint32_t replen;
2766
2767 encode_compound_hdr(xdr, req, &hdr);
2768 encode_sequence(xdr, &args->seq_args, &hdr);
2769 if (args->migration) {
2770 encode_putfh(xdr, args->fh, &hdr);
2771 replen = hdr.replen;
2772 encode_fs_locations(xdr, args->bitmask, &hdr);
2773 if (args->renew)
2774 encode_renew(xdr, args->clientid, &hdr);
2775 } else {
2776 encode_putfh(xdr, args->dir_fh, &hdr);
2777 encode_lookup(xdr, args->name, &hdr);
2778 replen = hdr.replen;
2779 encode_fs_locations(xdr, args->bitmask, &hdr);
2780 }
2781
2782 /* Set up reply kvec to capture returned fs_locations array. */
2783 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2784 (struct page **)&args->page, 0, PAGE_SIZE);
2785 encode_nops(&hdr);
2786}
2787
2788/*
2789 * Encode SECINFO request
2790 */
2791static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2792 struct xdr_stream *xdr,
2793 const void *data)
2794{
2795 const struct nfs4_secinfo_arg *args = data;
2796 struct compound_hdr hdr = {
2797 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2798 };
2799
2800 encode_compound_hdr(xdr, req, &hdr);
2801 encode_sequence(xdr, &args->seq_args, &hdr);
2802 encode_putfh(xdr, args->dir_fh, &hdr);
2803 encode_secinfo(xdr, args->name, &hdr);
2804 encode_nops(&hdr);
2805}
2806
2807/*
2808 * Encode FSID_PRESENT request
2809 */
2810static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2811 struct xdr_stream *xdr,
2812 const void *data)
2813{
2814 const struct nfs4_fsid_present_arg *args = data;
2815 struct compound_hdr hdr = {
2816 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2817 };
2818
2819 encode_compound_hdr(xdr, req, &hdr);
2820 encode_sequence(xdr, &args->seq_args, &hdr);
2821 encode_putfh(xdr, args->fh, &hdr);
2822 encode_getfh(xdr, &hdr);
2823 if (args->renew)
2824 encode_renew(xdr, args->clientid, &hdr);
2825 encode_nops(&hdr);
2826}
2827
2828#if defined(CONFIG_NFS_V4_1)
2829/*
2830 * BIND_CONN_TO_SESSION request
2831 */
2832static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2833 struct xdr_stream *xdr,
2834 const void *data)
2835{
2836 const struct nfs41_bind_conn_to_session_args *args = data;
2837 struct compound_hdr hdr = {
2838 .minorversion = args->client->cl_mvops->minor_version,
2839 };
2840
2841 encode_compound_hdr(xdr, req, &hdr);
2842 encode_bind_conn_to_session(xdr, args, &hdr);
2843 encode_nops(&hdr);
2844}
2845
2846/*
2847 * EXCHANGE_ID request
2848 */
2849static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2850 struct xdr_stream *xdr,
2851 const void *data)
2852{
2853 const struct nfs41_exchange_id_args *args = data;
2854 struct compound_hdr hdr = {
2855 .minorversion = args->client->cl_mvops->minor_version,
2856 };
2857
2858 encode_compound_hdr(xdr, req, &hdr);
2859 encode_exchange_id(xdr, args, &hdr);
2860 encode_nops(&hdr);
2861}
2862
2863/*
2864 * a CREATE_SESSION request
2865 */
2866static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2867 struct xdr_stream *xdr,
2868 const void *data)
2869{
2870 const struct nfs41_create_session_args *args = data;
2871 struct compound_hdr hdr = {
2872 .minorversion = args->client->cl_mvops->minor_version,
2873 };
2874
2875 encode_compound_hdr(xdr, req, &hdr);
2876 encode_create_session(xdr, args, &hdr);
2877 encode_nops(&hdr);
2878}
2879
2880/*
2881 * a DESTROY_SESSION request
2882 */
2883static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2884 struct xdr_stream *xdr,
2885 const void *data)
2886{
2887 const struct nfs4_session *session = data;
2888 struct compound_hdr hdr = {
2889 .minorversion = session->clp->cl_mvops->minor_version,
2890 };
2891
2892 encode_compound_hdr(xdr, req, &hdr);
2893 encode_destroy_session(xdr, session, &hdr);
2894 encode_nops(&hdr);
2895}
2896
2897/*
2898 * a DESTROY_CLIENTID request
2899 */
2900static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2901 struct xdr_stream *xdr,
2902 const void *data)
2903{
2904 const struct nfs_client *clp = data;
2905 struct compound_hdr hdr = {
2906 .minorversion = clp->cl_mvops->minor_version,
2907 };
2908
2909 encode_compound_hdr(xdr, req, &hdr);
2910 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2911 encode_nops(&hdr);
2912}
2913
2914/*
2915 * a SEQUENCE request
2916 */
2917static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2918 const void *data)
2919{
2920 const struct nfs4_sequence_args *args = data;
2921 struct compound_hdr hdr = {
2922 .minorversion = nfs4_xdr_minorversion(args),
2923 };
2924
2925 encode_compound_hdr(xdr, req, &hdr);
2926 encode_sequence(xdr, args, &hdr);
2927 encode_nops(&hdr);
2928}
2929
2930/*
2931 * a GET_LEASE_TIME request
2932 */
2933static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2934 struct xdr_stream *xdr,
2935 const void *data)
2936{
2937 const struct nfs4_get_lease_time_args *args = data;
2938 struct compound_hdr hdr = {
2939 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2940 };
2941 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2942
2943 encode_compound_hdr(xdr, req, &hdr);
2944 encode_sequence(xdr, &args->la_seq_args, &hdr);
2945 encode_putrootfh(xdr, &hdr);
2946 encode_fsinfo(xdr, lease_bitmap, &hdr);
2947 encode_nops(&hdr);
2948}
2949
2950/*
2951 * a RECLAIM_COMPLETE request
2952 */
2953static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2954 struct xdr_stream *xdr,
2955 const void *data)
2956{
2957 const struct nfs41_reclaim_complete_args *args = data;
2958 struct compound_hdr hdr = {
2959 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2960 };
2961
2962 encode_compound_hdr(xdr, req, &hdr);
2963 encode_sequence(xdr, &args->seq_args, &hdr);
2964 encode_reclaim_complete(xdr, args, &hdr);
2965 encode_nops(&hdr);
2966}
2967
2968/*
2969 * Encode GETDEVICEINFO request
2970 */
2971static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2972 struct xdr_stream *xdr,
2973 const void *data)
2974{
2975 const struct nfs4_getdeviceinfo_args *args = data;
2976 struct compound_hdr hdr = {
2977 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2978 };
2979
2980 encode_compound_hdr(xdr, req, &hdr);
2981 encode_sequence(xdr, &args->seq_args, &hdr);
2982 encode_getdeviceinfo(xdr, args, &hdr);
2983
2984 /* set up reply kvec. Subtract notification bitmap max size (2)
2985 * so that notification bitmap is put in xdr_buf tail */
2986 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2987 args->pdev->pages, args->pdev->pgbase,
2988 args->pdev->pglen);
2989
2990 encode_nops(&hdr);
2991}
2992
2993/*
2994 * Encode LAYOUTGET request
2995 */
2996static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2997 struct xdr_stream *xdr,
2998 const void *data)
2999{
3000 const struct nfs4_layoutget_args *args = data;
3001 struct compound_hdr hdr = {
3002 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3003 };
3004
3005 encode_compound_hdr(xdr, req, &hdr);
3006 encode_sequence(xdr, &args->seq_args, &hdr);
3007 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3008 encode_layoutget(xdr, args, &hdr);
3009
3010 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
3011 args->layout.pages, 0, args->layout.pglen);
3012
3013 encode_nops(&hdr);
3014}
3015
3016/*
3017 * Encode LAYOUTCOMMIT request
3018 */
3019static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3020 struct xdr_stream *xdr,
3021 const void *priv)
3022{
3023 const struct nfs4_layoutcommit_args *args = priv;
3024 struct nfs4_layoutcommit_data *data =
3025 container_of(args, struct nfs4_layoutcommit_data, args);
3026 struct compound_hdr hdr = {
3027 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3028 };
3029
3030 encode_compound_hdr(xdr, req, &hdr);
3031 encode_sequence(xdr, &args->seq_args, &hdr);
3032 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3033 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3034 encode_getfattr(xdr, args->bitmask, &hdr);
3035 encode_nops(&hdr);
3036}
3037
3038/*
3039 * Encode LAYOUTRETURN request
3040 */
3041static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3042 struct xdr_stream *xdr,
3043 const void *data)
3044{
3045 const struct nfs4_layoutreturn_args *args = data;
3046 struct compound_hdr hdr = {
3047 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3048 };
3049
3050 encode_compound_hdr(xdr, req, &hdr);
3051 encode_sequence(xdr, &args->seq_args, &hdr);
3052 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3053 encode_layoutreturn(xdr, args, &hdr);
3054 encode_nops(&hdr);
3055}
3056
3057/*
3058 * Encode SECINFO_NO_NAME request
3059 */
3060static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3061 struct xdr_stream *xdr,
3062 const void *data)
3063{
3064 const struct nfs41_secinfo_no_name_args *args = data;
3065 struct compound_hdr hdr = {
3066 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3067 };
3068
3069 encode_compound_hdr(xdr, req, &hdr);
3070 encode_sequence(xdr, &args->seq_args, &hdr);
3071 encode_putrootfh(xdr, &hdr);
3072 encode_secinfo_no_name(xdr, args, &hdr);
3073 encode_nops(&hdr);
3074}
3075
3076/*
3077 * Encode TEST_STATEID request
3078 */
3079static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3080 struct xdr_stream *xdr,
3081 const void *data)
3082{
3083 const struct nfs41_test_stateid_args *args = data;
3084 struct compound_hdr hdr = {
3085 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3086 };
3087
3088 encode_compound_hdr(xdr, req, &hdr);
3089 encode_sequence(xdr, &args->seq_args, &hdr);
3090 encode_test_stateid(xdr, args, &hdr);
3091 encode_nops(&hdr);
3092}
3093
3094/*
3095 * Encode FREE_STATEID request
3096 */
3097static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3098 struct xdr_stream *xdr,
3099 const void *data)
3100{
3101 const struct nfs41_free_stateid_args *args = data;
3102 struct compound_hdr hdr = {
3103 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3104 };
3105
3106 encode_compound_hdr(xdr, req, &hdr);
3107 encode_sequence(xdr, &args->seq_args, &hdr);
3108 encode_free_stateid(xdr, args, &hdr);
3109 encode_nops(&hdr);
3110}
3111#endif /* CONFIG_NFS_V4_1 */
3112
3113static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3114{
3115 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3116 "Remaining buffer length is %tu words.\n",
3117 func, xdr->end - xdr->p);
3118}
3119
3120static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3121{
3122 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3123 NFS4_OPAQUE_LIMIT);
3124 if (unlikely(ret < 0)) {
3125 if (ret == -EBADMSG)
3126 print_overflow_msg(__func__, xdr);
3127 return -EIO;
3128 }
3129 *len = ret;
3130 return 0;
3131}
3132
3133static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3134{
3135 __be32 *p;
3136
3137 p = xdr_inline_decode(xdr, 8);
3138 if (unlikely(!p))
3139 goto out_overflow;
3140 hdr->status = be32_to_cpup(p++);
3141 hdr->taglen = be32_to_cpup(p);
3142
3143 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3144 if (unlikely(!p))
3145 goto out_overflow;
3146 hdr->tag = (char *)p;
3147 p += XDR_QUADLEN(hdr->taglen);
3148 hdr->nops = be32_to_cpup(p);
3149 if (unlikely(hdr->nops < 1))
3150 return nfs4_stat_to_errno(hdr->status);
3151 return 0;
3152out_overflow:
3153 print_overflow_msg(__func__, xdr);
3154 return -EIO;
3155}
3156
3157static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3158 int *nfs_retval)
3159{
3160 __be32 *p;
3161 uint32_t opnum;
3162 int32_t nfserr;
3163
3164 p = xdr_inline_decode(xdr, 8);
3165 if (unlikely(!p))
3166 goto out_overflow;
3167 opnum = be32_to_cpup(p++);
3168 if (unlikely(opnum != expected))
3169 goto out_bad_operation;
3170 nfserr = be32_to_cpup(p);
3171 if (nfserr == NFS_OK)
3172 *nfs_retval = 0;
3173 else
3174 *nfs_retval = nfs4_stat_to_errno(nfserr);
3175 return true;
3176out_bad_operation:
3177 dprintk("nfs: Server returned operation"
3178 " %d but we issued a request for %d\n",
3179 opnum, expected);
3180 *nfs_retval = -EREMOTEIO;
3181 return false;
3182out_overflow:
3183 print_overflow_msg(__func__, xdr);
3184 *nfs_retval = -EIO;
3185 return false;
3186}
3187
3188static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3189{
3190 int retval;
3191
3192 __decode_op_hdr(xdr, expected, &retval);
3193 return retval;
3194}
3195
3196/* Dummy routine */
3197static int decode_ace(struct xdr_stream *xdr, void *ace)
3198{
3199 __be32 *p;
3200 unsigned int strlen;
3201 char *str;
3202
3203 p = xdr_inline_decode(xdr, 12);
3204 if (likely(p))
3205 return decode_opaque_inline(xdr, &strlen, &str);
3206 print_overflow_msg(__func__, xdr);
3207 return -EIO;
3208}
3209
3210static ssize_t
3211decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3212{
3213 ssize_t ret;
3214
3215 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz);
3216 if (likely(ret >= 0))
3217 return ret;
3218 if (ret == -EMSGSIZE)
3219 return sz;
3220 print_overflow_msg(__func__, xdr);
3221 return -EIO;
3222}
3223
3224static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3225{
3226 ssize_t ret;
3227 ret = decode_bitmap4(xdr, bitmap, 3);
3228 return ret < 0 ? ret : 0;
3229}
3230
3231static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3232{
3233 __be32 *p;
3234
3235 p = xdr_inline_decode(xdr, 4);
3236 if (unlikely(!p))
3237 goto out_overflow;
3238 *attrlen = be32_to_cpup(p);
3239 *savep = xdr_stream_pos(xdr);
3240 return 0;
3241out_overflow:
3242 print_overflow_msg(__func__, xdr);
3243 return -EIO;
3244}
3245
3246static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3247{
3248 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3249 int ret;
3250 ret = decode_attr_bitmap(xdr, bitmask);
3251 if (unlikely(ret < 0))
3252 return ret;
3253 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3254 } else
3255 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3256 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3257 bitmask[0], bitmask[1], bitmask[2]);
3258 return 0;
3259}
3260
3261static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3262{
3263 __be32 *p;
3264 int ret = 0;
3265
3266 *type = 0;
3267 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3268 return -EIO;
3269 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3270 p = xdr_inline_decode(xdr, 4);
3271 if (unlikely(!p))
3272 goto out_overflow;
3273 *type = be32_to_cpup(p);
3274 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3275 dprintk("%s: bad type %d\n", __func__, *type);
3276 return -EIO;
3277 }
3278 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3279 ret = NFS_ATTR_FATTR_TYPE;
3280 }
3281 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3282 return ret;
3283out_overflow:
3284 print_overflow_msg(__func__, xdr);
3285 return -EIO;
3286}
3287
3288static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3289 uint32_t *bitmap, uint32_t *type)
3290{
3291 __be32 *p;
3292
3293 *type = 0;
3294 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3295 return -EIO;
3296 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3297 p = xdr_inline_decode(xdr, 4);
3298 if (unlikely(!p))
3299 goto out_overflow;
3300 *type = be32_to_cpup(p);
3301 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3302 }
3303 dprintk("%s: expire type=0x%x\n", __func__, *type);
3304 return 0;
3305out_overflow:
3306 print_overflow_msg(__func__, xdr);
3307 return -EIO;
3308}
3309
3310static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3311{
3312 __be32 *p;
3313 int ret = 0;
3314
3315 *change = 0;
3316 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3317 return -EIO;
3318 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3319 p = xdr_inline_decode(xdr, 8);
3320 if (unlikely(!p))
3321 goto out_overflow;
3322 xdr_decode_hyper(p, change);
3323 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3324 ret = NFS_ATTR_FATTR_CHANGE;
3325 }
3326 dprintk("%s: change attribute=%Lu\n", __func__,
3327 (unsigned long long)*change);
3328 return ret;
3329out_overflow:
3330 print_overflow_msg(__func__, xdr);
3331 return -EIO;
3332}
3333
3334static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3335{
3336 __be32 *p;
3337 int ret = 0;
3338
3339 *size = 0;
3340 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3341 return -EIO;
3342 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3343 p = xdr_inline_decode(xdr, 8);
3344 if (unlikely(!p))
3345 goto out_overflow;
3346 xdr_decode_hyper(p, size);
3347 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3348 ret = NFS_ATTR_FATTR_SIZE;
3349 }
3350 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3351 return ret;
3352out_overflow:
3353 print_overflow_msg(__func__, xdr);
3354 return -EIO;
3355}
3356
3357static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3358{
3359 __be32 *p;
3360
3361 *res = 0;
3362 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3363 return -EIO;
3364 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3365 p = xdr_inline_decode(xdr, 4);
3366 if (unlikely(!p))
3367 goto out_overflow;
3368 *res = be32_to_cpup(p);
3369 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3370 }
3371 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3372 return 0;
3373out_overflow:
3374 print_overflow_msg(__func__, xdr);
3375 return -EIO;
3376}
3377
3378static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3379{
3380 __be32 *p;
3381
3382 *res = 0;
3383 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3384 return -EIO;
3385 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3386 p = xdr_inline_decode(xdr, 4);
3387 if (unlikely(!p))
3388 goto out_overflow;
3389 *res = be32_to_cpup(p);
3390 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3391 }
3392 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3393 return 0;
3394out_overflow:
3395 print_overflow_msg(__func__, xdr);
3396 return -EIO;
3397}
3398
3399static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3400{
3401 __be32 *p;
3402 int ret = 0;
3403
3404 fsid->major = 0;
3405 fsid->minor = 0;
3406 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3407 return -EIO;
3408 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3409 p = xdr_inline_decode(xdr, 16);
3410 if (unlikely(!p))
3411 goto out_overflow;
3412 p = xdr_decode_hyper(p, &fsid->major);
3413 xdr_decode_hyper(p, &fsid->minor);
3414 bitmap[0] &= ~FATTR4_WORD0_FSID;
3415 ret = NFS_ATTR_FATTR_FSID;
3416 }
3417 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3418 (unsigned long long)fsid->major,
3419 (unsigned long long)fsid->minor);
3420 return ret;
3421out_overflow:
3422 print_overflow_msg(__func__, xdr);
3423 return -EIO;
3424}
3425
3426static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3427{
3428 __be32 *p;
3429
3430 *res = 60;
3431 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3432 return -EIO;
3433 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3434 p = xdr_inline_decode(xdr, 4);
3435 if (unlikely(!p))
3436 goto out_overflow;
3437 *res = be32_to_cpup(p);
3438 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3439 }
3440 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3441 return 0;
3442out_overflow:
3443 print_overflow_msg(__func__, xdr);
3444 return -EIO;
3445}
3446
3447static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3448{
3449 __be32 *p;
3450
3451 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3452 return -EIO;
3453 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3454 p = xdr_inline_decode(xdr, 4);
3455 if (unlikely(!p))
3456 goto out_overflow;
3457 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3458 *res = -be32_to_cpup(p);
3459 }
3460 return 0;
3461out_overflow:
3462 print_overflow_msg(__func__, xdr);
3463 return -EIO;
3464}
3465
3466static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3467 uint32_t *bitmap, uint32_t *bitmask)
3468{
3469 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3470 int ret;
3471 ret = decode_attr_bitmap(xdr, bitmask);
3472 if (unlikely(ret < 0))
3473 return ret;
3474 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3475 } else
3476 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3477 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3478 bitmask[0], bitmask[1], bitmask[2]);
3479 return 0;
3480}
3481
3482static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3483{
3484 __be32 *p;
3485 int len;
3486
3487 if (fh != NULL)
3488 memset(fh, 0, sizeof(*fh));
3489
3490 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3491 return -EIO;
3492 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3493 p = xdr_inline_decode(xdr, 4);
3494 if (unlikely(!p))
3495 goto out_overflow;
3496 len = be32_to_cpup(p);
3497 if (len > NFS4_FHSIZE)
3498 return -EIO;
3499 p = xdr_inline_decode(xdr, len);
3500 if (unlikely(!p))
3501 goto out_overflow;
3502 if (fh != NULL) {
3503 memcpy(fh->data, p, len);
3504 fh->size = len;
3505 }
3506 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3507 }
3508 return 0;
3509out_overflow:
3510 print_overflow_msg(__func__, xdr);
3511 return -EIO;
3512}
3513
3514static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3515{
3516 __be32 *p;
3517
3518 *res = 0;
3519 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3520 return -EIO;
3521 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3522 p = xdr_inline_decode(xdr, 4);
3523 if (unlikely(!p))
3524 goto out_overflow;
3525 *res = be32_to_cpup(p);
3526 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3527 }
3528 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3529 return 0;
3530out_overflow:
3531 print_overflow_msg(__func__, xdr);
3532 return -EIO;
3533}
3534
3535static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3536{
3537 __be32 *p;
3538 int ret = 0;
3539
3540 *fileid = 0;
3541 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3542 return -EIO;
3543 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3544 p = xdr_inline_decode(xdr, 8);
3545 if (unlikely(!p))
3546 goto out_overflow;
3547 xdr_decode_hyper(p, fileid);
3548 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3549 ret = NFS_ATTR_FATTR_FILEID;
3550 }
3551 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3552 return ret;
3553out_overflow:
3554 print_overflow_msg(__func__, xdr);
3555 return -EIO;
3556}
3557
3558static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3559{
3560 __be32 *p;
3561 int ret = 0;
3562
3563 *fileid = 0;
3564 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3565 return -EIO;
3566 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3567 p = xdr_inline_decode(xdr, 8);
3568 if (unlikely(!p))
3569 goto out_overflow;
3570 xdr_decode_hyper(p, fileid);
3571 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3572 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3573 }
3574 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3575 return ret;
3576out_overflow:
3577 print_overflow_msg(__func__, xdr);
3578 return -EIO;
3579}
3580
3581static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3582{
3583 __be32 *p;
3584 int status = 0;
3585
3586 *res = 0;
3587 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3588 return -EIO;
3589 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3590 p = xdr_inline_decode(xdr, 8);
3591 if (unlikely(!p))
3592 goto out_overflow;
3593 xdr_decode_hyper(p, res);
3594 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3595 }
3596 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3597 return status;
3598out_overflow:
3599 print_overflow_msg(__func__, xdr);
3600 return -EIO;
3601}
3602
3603static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3604{
3605 __be32 *p;
3606 int status = 0;
3607
3608 *res = 0;
3609 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3610 return -EIO;
3611 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3612 p = xdr_inline_decode(xdr, 8);
3613 if (unlikely(!p))
3614 goto out_overflow;
3615 xdr_decode_hyper(p, res);
3616 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3617 }
3618 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3619 return status;
3620out_overflow:
3621 print_overflow_msg(__func__, xdr);
3622 return -EIO;
3623}
3624
3625static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3626{
3627 __be32 *p;
3628 int status = 0;
3629
3630 *res = 0;
3631 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3632 return -EIO;
3633 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3634 p = xdr_inline_decode(xdr, 8);
3635 if (unlikely(!p))
3636 goto out_overflow;
3637 xdr_decode_hyper(p, res);
3638 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3639 }
3640 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3641 return status;
3642out_overflow:
3643 print_overflow_msg(__func__, xdr);
3644 return -EIO;
3645}
3646
3647static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3648{
3649 u32 n;
3650 __be32 *p;
3651 int status = 0;
3652
3653 p = xdr_inline_decode(xdr, 4);
3654 if (unlikely(!p))
3655 goto out_overflow;
3656 n = be32_to_cpup(p);
3657 if (n == 0)
3658 goto root_path;
3659 dprintk("pathname4: ");
3660 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3661 dprintk("cannot parse %d components in path\n", n);
3662 goto out_eio;
3663 }
3664 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3665 struct nfs4_string *component = &path->components[path->ncomponents];
3666 status = decode_opaque_inline(xdr, &component->len, &component->data);
3667 if (unlikely(status != 0))
3668 goto out_eio;
3669 ifdebug (XDR)
3670 pr_cont("%s%.*s ",
3671 (path->ncomponents != n ? "/ " : ""),
3672 component->len, component->data);
3673 }
3674out:
3675 return status;
3676root_path:
3677/* a root pathname is sent as a zero component4 */
3678 path->ncomponents = 1;
3679 path->components[0].len=0;
3680 path->components[0].data=NULL;
3681 dprintk("pathname4: /\n");
3682 goto out;
3683out_eio:
3684 dprintk(" status %d", status);
3685 status = -EIO;
3686 goto out;
3687out_overflow:
3688 print_overflow_msg(__func__, xdr);
3689 return -EIO;
3690}
3691
3692static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3693{
3694 int n;
3695 __be32 *p;
3696 int status = -EIO;
3697
3698 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3699 goto out;
3700 status = 0;
3701 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3702 goto out;
3703 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3704 status = -EIO;
3705 /* Ignore borken servers that return unrequested attrs */
3706 if (unlikely(res == NULL))
3707 goto out;
3708 dprintk("%s: fsroot:\n", __func__);
3709 status = decode_pathname(xdr, &res->fs_path);
3710 if (unlikely(status != 0))
3711 goto out;
3712 p = xdr_inline_decode(xdr, 4);
3713 if (unlikely(!p))
3714 goto out_overflow;
3715 n = be32_to_cpup(p);
3716 if (n <= 0)
3717 goto out_eio;
3718 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3719 u32 m;
3720 struct nfs4_fs_location *loc;
3721
3722 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3723 break;
3724 loc = &res->locations[res->nlocations];
3725 p = xdr_inline_decode(xdr, 4);
3726 if (unlikely(!p))
3727 goto out_overflow;
3728 m = be32_to_cpup(p);
3729
3730 dprintk("%s: servers:\n", __func__);
3731 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3732 struct nfs4_string *server;
3733
3734 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3735 unsigned int i;
3736 dprintk("%s: using first %u of %u servers "
3737 "returned for location %u\n",
3738 __func__,
3739 NFS4_FS_LOCATION_MAXSERVERS,
3740 m, res->nlocations);
3741 for (i = loc->nservers; i < m; i++) {
3742 unsigned int len;
3743 char *data;
3744 status = decode_opaque_inline(xdr, &len, &data);
3745 if (unlikely(status != 0))
3746 goto out_eio;
3747 }
3748 break;
3749 }
3750 server = &loc->servers[loc->nservers];
3751 status = decode_opaque_inline(xdr, &server->len, &server->data);
3752 if (unlikely(status != 0))
3753 goto out_eio;
3754 dprintk("%s ", server->data);
3755 }
3756 status = decode_pathname(xdr, &loc->rootpath);
3757 if (unlikely(status != 0))
3758 goto out_eio;
3759 }
3760 if (res->nlocations != 0)
3761 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3762out:
3763 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3764 return status;
3765out_overflow:
3766 print_overflow_msg(__func__, xdr);
3767out_eio:
3768 status = -EIO;
3769 goto out;
3770}
3771
3772static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3773{
3774 __be32 *p;
3775 int status = 0;
3776
3777 *res = 0;
3778 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3779 return -EIO;
3780 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3781 p = xdr_inline_decode(xdr, 8);
3782 if (unlikely(!p))
3783 goto out_overflow;
3784 xdr_decode_hyper(p, res);
3785 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3786 }
3787 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3788 return status;
3789out_overflow:
3790 print_overflow_msg(__func__, xdr);
3791 return -EIO;
3792}
3793
3794static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3795{
3796 __be32 *p;
3797 int status = 0;
3798
3799 *maxlink = 1;
3800 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3801 return -EIO;
3802 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3803 p = xdr_inline_decode(xdr, 4);
3804 if (unlikely(!p))
3805 goto out_overflow;
3806 *maxlink = be32_to_cpup(p);
3807 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3808 }
3809 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3810 return status;
3811out_overflow:
3812 print_overflow_msg(__func__, xdr);
3813 return -EIO;
3814}
3815
3816static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3817{
3818 __be32 *p;
3819 int status = 0;
3820
3821 *maxname = 1024;
3822 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3823 return -EIO;
3824 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3825 p = xdr_inline_decode(xdr, 4);
3826 if (unlikely(!p))
3827 goto out_overflow;
3828 *maxname = be32_to_cpup(p);
3829 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3830 }
3831 dprintk("%s: maxname=%u\n", __func__, *maxname);
3832 return status;
3833out_overflow:
3834 print_overflow_msg(__func__, xdr);
3835 return -EIO;
3836}
3837
3838static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3839{
3840 __be32 *p;
3841 int status = 0;
3842
3843 *res = 1024;
3844 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3845 return -EIO;
3846 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3847 uint64_t maxread;
3848 p = xdr_inline_decode(xdr, 8);
3849 if (unlikely(!p))
3850 goto out_overflow;
3851 xdr_decode_hyper(p, &maxread);
3852 if (maxread > 0x7FFFFFFF)
3853 maxread = 0x7FFFFFFF;
3854 *res = (uint32_t)maxread;
3855 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3856 }
3857 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3858 return status;
3859out_overflow:
3860 print_overflow_msg(__func__, xdr);
3861 return -EIO;
3862}
3863
3864static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3865{
3866 __be32 *p;
3867 int status = 0;
3868
3869 *res = 1024;
3870 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3871 return -EIO;
3872 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3873 uint64_t maxwrite;
3874 p = xdr_inline_decode(xdr, 8);
3875 if (unlikely(!p))
3876 goto out_overflow;
3877 xdr_decode_hyper(p, &maxwrite);
3878 if (maxwrite > 0x7FFFFFFF)
3879 maxwrite = 0x7FFFFFFF;
3880 *res = (uint32_t)maxwrite;
3881 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3882 }
3883 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3884 return status;
3885out_overflow:
3886 print_overflow_msg(__func__, xdr);
3887 return -EIO;
3888}
3889
3890static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3891{
3892 uint32_t tmp;
3893 __be32 *p;
3894 int ret = 0;
3895
3896 *mode = 0;
3897 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3898 return -EIO;
3899 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3900 p = xdr_inline_decode(xdr, 4);
3901 if (unlikely(!p))
3902 goto out_overflow;
3903 tmp = be32_to_cpup(p);
3904 *mode = tmp & ~S_IFMT;
3905 bitmap[1] &= ~FATTR4_WORD1_MODE;
3906 ret = NFS_ATTR_FATTR_MODE;
3907 }
3908 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3909 return ret;
3910out_overflow:
3911 print_overflow_msg(__func__, xdr);
3912 return -EIO;
3913}
3914
3915static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3916{
3917 __be32 *p;
3918 int ret = 0;
3919
3920 *nlink = 1;
3921 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3922 return -EIO;
3923 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3924 p = xdr_inline_decode(xdr, 4);
3925 if (unlikely(!p))
3926 goto out_overflow;
3927 *nlink = be32_to_cpup(p);
3928 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3929 ret = NFS_ATTR_FATTR_NLINK;
3930 }
3931 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3932 return ret;
3933out_overflow:
3934 print_overflow_msg(__func__, xdr);
3935 return -EIO;
3936}
3937
3938static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3939 struct nfs4_string *name, gfp_t gfp_flags)
3940{
3941 ssize_t ret;
3942
3943 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3944 XDR_MAX_NETOBJ, gfp_flags);
3945 name->len = 0;
3946 if (ret > 0)
3947 name->len = ret;
3948 return ret;
3949}
3950
3951static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3952 const struct nfs_server *server, kuid_t *uid,
3953 struct nfs4_string *owner_name)
3954{
3955 ssize_t len;
3956 char *p;
3957
3958 *uid = make_kuid(&init_user_ns, -2);
3959 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3960 return -EIO;
3961 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3962 return 0;
3963 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3964
3965 if (owner_name != NULL) {
3966 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3967 if (len <= 0)
3968 goto out;
3969 dprintk("%s: name=%s\n", __func__, owner_name->data);
3970 return NFS_ATTR_FATTR_OWNER_NAME;
3971 } else {
3972 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3973 XDR_MAX_NETOBJ);
3974 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3975 goto out;
3976 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3977 return NFS_ATTR_FATTR_OWNER;
3978 }
3979out:
3980 if (len != -EBADMSG)
3981 return 0;
3982 print_overflow_msg(__func__, xdr);
3983 return -EIO;
3984}
3985
3986static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3987 const struct nfs_server *server, kgid_t *gid,
3988 struct nfs4_string *group_name)
3989{
3990 ssize_t len;
3991 char *p;
3992
3993 *gid = make_kgid(&init_user_ns, -2);
3994 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3995 return -EIO;
3996 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
3997 return 0;
3998 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3999
4000 if (group_name != NULL) {
4001 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
4002 if (len <= 0)
4003 goto out;
4004 dprintk("%s: name=%s\n", __func__, group_name->data);
4005 return NFS_ATTR_FATTR_GROUP_NAME;
4006 } else {
4007 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
4008 XDR_MAX_NETOBJ);
4009 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
4010 goto out;
4011 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
4012 return NFS_ATTR_FATTR_GROUP;
4013 }
4014out:
4015 if (len != -EBADMSG)
4016 return 0;
4017 print_overflow_msg(__func__, xdr);
4018 return -EIO;
4019}
4020
4021static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
4022{
4023 uint32_t major = 0, minor = 0;
4024 __be32 *p;
4025 int ret = 0;
4026
4027 *rdev = MKDEV(0,0);
4028 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
4029 return -EIO;
4030 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
4031 dev_t tmp;
4032
4033 p = xdr_inline_decode(xdr, 8);
4034 if (unlikely(!p))
4035 goto out_overflow;
4036 major = be32_to_cpup(p++);
4037 minor = be32_to_cpup(p);
4038 tmp = MKDEV(major, minor);
4039 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
4040 *rdev = tmp;
4041 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4042 ret = NFS_ATTR_FATTR_RDEV;
4043 }
4044 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4045 return ret;
4046out_overflow:
4047 print_overflow_msg(__func__, xdr);
4048 return -EIO;
4049}
4050
4051static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4052{
4053 __be32 *p;
4054 int status = 0;
4055
4056 *res = 0;
4057 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4058 return -EIO;
4059 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4060 p = xdr_inline_decode(xdr, 8);
4061 if (unlikely(!p))
4062 goto out_overflow;
4063 xdr_decode_hyper(p, res);
4064 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4065 }
4066 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4067 return status;
4068out_overflow:
4069 print_overflow_msg(__func__, xdr);
4070 return -EIO;
4071}
4072
4073static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4074{
4075 __be32 *p;
4076 int status = 0;
4077
4078 *res = 0;
4079 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4080 return -EIO;
4081 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4082 p = xdr_inline_decode(xdr, 8);
4083 if (unlikely(!p))
4084 goto out_overflow;
4085 xdr_decode_hyper(p, res);
4086 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4087 }
4088 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4089 return status;
4090out_overflow:
4091 print_overflow_msg(__func__, xdr);
4092 return -EIO;
4093}
4094
4095static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4096{
4097 __be32 *p;
4098 int status = 0;
4099
4100 *res = 0;
4101 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4102 return -EIO;
4103 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4104 p = xdr_inline_decode(xdr, 8);
4105 if (unlikely(!p))
4106 goto out_overflow;
4107 xdr_decode_hyper(p, res);
4108 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4109 }
4110 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4111 return status;
4112out_overflow:
4113 print_overflow_msg(__func__, xdr);
4114 return -EIO;
4115}
4116
4117static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4118{
4119 __be32 *p;
4120 int ret = 0;
4121
4122 *used = 0;
4123 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4124 return -EIO;
4125 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4126 p = xdr_inline_decode(xdr, 8);
4127 if (unlikely(!p))
4128 goto out_overflow;
4129 xdr_decode_hyper(p, used);
4130 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4131 ret = NFS_ATTR_FATTR_SPACE_USED;
4132 }
4133 dprintk("%s: space used=%Lu\n", __func__,
4134 (unsigned long long)*used);
4135 return ret;
4136out_overflow:
4137 print_overflow_msg(__func__, xdr);
4138 return -EIO;
4139}
4140
4141static __be32 *
4142xdr_decode_nfstime4(__be32 *p, struct timespec *t)
4143{
4144 __u64 sec;
4145
4146 p = xdr_decode_hyper(p, &sec);
4147 t-> tv_sec = (time_t)sec;
4148 t->tv_nsec = be32_to_cpup(p++);
4149 return p;
4150}
4151
4152static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4153{
4154 __be32 *p;
4155
4156 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4157 if (unlikely(!p))
4158 goto out_overflow;
4159 xdr_decode_nfstime4(p, time);
4160 return 0;
4161out_overflow:
4162 print_overflow_msg(__func__, xdr);
4163 return -EIO;
4164}
4165
4166static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4167{
4168 int status = 0;
4169
4170 time->tv_sec = 0;
4171 time->tv_nsec = 0;
4172 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4173 return -EIO;
4174 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4175 status = decode_attr_time(xdr, time);
4176 if (status == 0)
4177 status = NFS_ATTR_FATTR_ATIME;
4178 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4179 }
4180 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4181 return status;
4182}
4183
4184static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4185{
4186 int status = 0;
4187
4188 time->tv_sec = 0;
4189 time->tv_nsec = 0;
4190 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4191 return -EIO;
4192 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4193 status = decode_attr_time(xdr, time);
4194 if (status == 0)
4195 status = NFS_ATTR_FATTR_CTIME;
4196 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4197 }
4198 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4199 return status;
4200}
4201
4202static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4203 struct timespec *time)
4204{
4205 int status = 0;
4206
4207 time->tv_sec = 0;
4208 time->tv_nsec = 0;
4209 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4210 return -EIO;
4211 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4212 status = decode_attr_time(xdr, time);
4213 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4214 }
4215 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4216 (long)time->tv_nsec);
4217 return status;
4218}
4219
4220static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4221 struct nfs4_label *label)
4222{
4223 uint32_t pi = 0;
4224 uint32_t lfs = 0;
4225 __u32 len;
4226 __be32 *p;
4227 int status = 0;
4228
4229 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4230 return -EIO;
4231 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4232 p = xdr_inline_decode(xdr, 4);
4233 if (unlikely(!p))
4234 goto out_overflow;
4235 lfs = be32_to_cpup(p++);
4236 p = xdr_inline_decode(xdr, 4);
4237 if (unlikely(!p))
4238 goto out_overflow;
4239 pi = be32_to_cpup(p++);
4240 p = xdr_inline_decode(xdr, 4);
4241 if (unlikely(!p))
4242 goto out_overflow;
4243 len = be32_to_cpup(p++);
4244 p = xdr_inline_decode(xdr, len);
4245 if (unlikely(!p))
4246 goto out_overflow;
4247 if (len < NFS4_MAXLABELLEN) {
4248 if (label) {
4249 memcpy(label->label, p, len);
4250 label->len = len;
4251 label->pi = pi;
4252 label->lfs = lfs;
4253 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4254 }
4255 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4256 } else
4257 printk(KERN_WARNING "%s: label too long (%u)!\n",
4258 __func__, len);
4259 }
4260 if (label && label->label)
4261 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4262 (char *)label->label, label->len, label->pi, label->lfs);
4263 return status;
4264
4265out_overflow:
4266 print_overflow_msg(__func__, xdr);
4267 return -EIO;
4268}
4269
4270static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4271{
4272 int status = 0;
4273
4274 time->tv_sec = 0;
4275 time->tv_nsec = 0;
4276 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4277 return -EIO;
4278 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4279 status = decode_attr_time(xdr, time);
4280 if (status == 0)
4281 status = NFS_ATTR_FATTR_MTIME;
4282 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4283 }
4284 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4285 return status;
4286}
4287
4288static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4289{
4290 unsigned int attrwords = XDR_QUADLEN(attrlen);
4291 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4292
4293 if (unlikely(attrwords != nwords)) {
4294 dprintk("%s: server returned incorrect attribute length: "
4295 "%u %c %u\n",
4296 __func__,
4297 attrwords << 2,
4298 (attrwords < nwords) ? '<' : '>',
4299 nwords << 2);
4300 return -EIO;
4301 }
4302 return 0;
4303}
4304
4305static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4306{
4307 __be32 *p;
4308
4309 p = xdr_inline_decode(xdr, 20);
4310 if (unlikely(!p))
4311 goto out_overflow;
4312 cinfo->atomic = be32_to_cpup(p++);
4313 p = xdr_decode_hyper(p, &cinfo->before);
4314 xdr_decode_hyper(p, &cinfo->after);
4315 return 0;
4316out_overflow:
4317 print_overflow_msg(__func__, xdr);
4318 return -EIO;
4319}
4320
4321static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4322{
4323 __be32 *p;
4324 uint32_t supp, acc;
4325 int status;
4326
4327 status = decode_op_hdr(xdr, OP_ACCESS);
4328 if (status)
4329 return status;
4330 p = xdr_inline_decode(xdr, 8);
4331 if (unlikely(!p))
4332 goto out_overflow;
4333 supp = be32_to_cpup(p++);
4334 acc = be32_to_cpup(p);
4335 *supported = supp;
4336 *access = acc;
4337 return 0;
4338out_overflow:
4339 print_overflow_msg(__func__, xdr);
4340 return -EIO;
4341}
4342
4343static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4344{
4345 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4346 if (unlikely(ret < 0)) {
4347 print_overflow_msg(__func__, xdr);
4348 return -EIO;
4349 }
4350 return 0;
4351}
4352
4353static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4354{
4355 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4356}
4357
4358static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4359{
4360 stateid->type = NFS4_OPEN_STATEID_TYPE;
4361 return decode_stateid(xdr, stateid);
4362}
4363
4364static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4365{
4366 stateid->type = NFS4_LOCK_STATEID_TYPE;
4367 return decode_stateid(xdr, stateid);
4368}
4369
4370static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4371{
4372 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4373 return decode_stateid(xdr, stateid);
4374}
4375
4376static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4377{
4378 nfs4_stateid dummy;
4379
4380 nfs4_stateid_copy(stateid, &invalid_stateid);
4381 return decode_stateid(xdr, &dummy);
4382}
4383
4384static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4385{
4386 int status;
4387
4388 status = decode_op_hdr(xdr, OP_CLOSE);
4389 if (status != -EIO)
4390 nfs_increment_open_seqid(status, res->seqid);
4391 if (!status)
4392 status = decode_invalid_stateid(xdr, &res->stateid);
4393 return status;
4394}
4395
4396static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4397{
4398 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4399}
4400
4401static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4402{
4403 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4404}
4405
4406static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4407{
4408 int status;
4409
4410 status = decode_op_hdr(xdr, OP_COMMIT);
4411 if (!status)
4412 status = decode_write_verifier(xdr, &res->verf->verifier);
4413 return status;
4414}
4415
4416static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4417{
4418 __be32 *p;
4419 uint32_t bmlen;
4420 int status;
4421
4422 status = decode_op_hdr(xdr, OP_CREATE);
4423 if (status)
4424 return status;
4425 if ((status = decode_change_info(xdr, cinfo)))
4426 return status;
4427 p = xdr_inline_decode(xdr, 4);
4428 if (unlikely(!p))
4429 goto out_overflow;
4430 bmlen = be32_to_cpup(p);
4431 p = xdr_inline_decode(xdr, bmlen << 2);
4432 if (likely(p))
4433 return 0;
4434out_overflow:
4435 print_overflow_msg(__func__, xdr);
4436 return -EIO;
4437}
4438
4439static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4440{
4441 unsigned int savep;
4442 uint32_t attrlen, bitmap[3] = {0};
4443 int status;
4444
4445 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4446 goto xdr_error;
4447 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4448 goto xdr_error;
4449 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4450 goto xdr_error;
4451 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4452 goto xdr_error;
4453 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4454 &res->fh_expire_type)) != 0)
4455 goto xdr_error;
4456 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4457 goto xdr_error;
4458 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4459 goto xdr_error;
4460 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4461 goto xdr_error;
4462 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4463 res->exclcreat_bitmask)) != 0)
4464 goto xdr_error;
4465 status = verify_attr_len(xdr, savep, attrlen);
4466xdr_error:
4467 dprintk("%s: xdr returned %d!\n", __func__, -status);
4468 return status;
4469}
4470
4471static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4472{
4473 unsigned int savep;
4474 uint32_t attrlen, bitmap[3] = {0};
4475 int status;
4476
4477 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4478 goto xdr_error;
4479 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4480 goto xdr_error;
4481 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4482 goto xdr_error;
4483
4484 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4485 goto xdr_error;
4486 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4487 goto xdr_error;
4488 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4489 goto xdr_error;
4490
4491 status = -EIO;
4492 if (unlikely(bitmap[0]))
4493 goto xdr_error;
4494
4495 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4496 goto xdr_error;
4497 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4498 goto xdr_error;
4499 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4500 goto xdr_error;
4501
4502 status = verify_attr_len(xdr, savep, attrlen);
4503xdr_error:
4504 dprintk("%s: xdr returned %d!\n", __func__, -status);
4505 return status;
4506}
4507
4508static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4509{
4510 unsigned int savep;
4511 uint32_t attrlen, bitmap[3] = {0};
4512 int status;
4513
4514 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4515 goto xdr_error;
4516 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4517 goto xdr_error;
4518 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4519 goto xdr_error;
4520
4521 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4522 goto xdr_error;
4523 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4524 goto xdr_error;
4525
4526 status = verify_attr_len(xdr, savep, attrlen);
4527xdr_error:
4528 dprintk("%s: xdr returned %d!\n", __func__, -status);
4529 return status;
4530}
4531
4532static int decode_threshold_hint(struct xdr_stream *xdr,
4533 uint32_t *bitmap,
4534 uint64_t *res,
4535 uint32_t hint_bit)
4536{
4537 __be32 *p;
4538
4539 *res = 0;
4540 if (likely(bitmap[0] & hint_bit)) {
4541 p = xdr_inline_decode(xdr, 8);
4542 if (unlikely(!p))
4543 goto out_overflow;
4544 xdr_decode_hyper(p, res);
4545 }
4546 return 0;
4547out_overflow:
4548 print_overflow_msg(__func__, xdr);
4549 return -EIO;
4550}
4551
4552static int decode_first_threshold_item4(struct xdr_stream *xdr,
4553 struct nfs4_threshold *res)
4554{
4555 __be32 *p;
4556 unsigned int savep;
4557 uint32_t bitmap[3] = {0,}, attrlen;
4558 int status;
4559
4560 /* layout type */
4561 p = xdr_inline_decode(xdr, 4);
4562 if (unlikely(!p)) {
4563 print_overflow_msg(__func__, xdr);
4564 return -EIO;
4565 }
4566 res->l_type = be32_to_cpup(p);
4567
4568 /* thi_hintset bitmap */
4569 status = decode_attr_bitmap(xdr, bitmap);
4570 if (status < 0)
4571 goto xdr_error;
4572
4573 /* thi_hintlist length */
4574 status = decode_attr_length(xdr, &attrlen, &savep);
4575 if (status < 0)
4576 goto xdr_error;
4577 /* thi_hintlist */
4578 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4579 if (status < 0)
4580 goto xdr_error;
4581 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4582 if (status < 0)
4583 goto xdr_error;
4584 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4585 THRESHOLD_RD_IO);
4586 if (status < 0)
4587 goto xdr_error;
4588 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4589 THRESHOLD_WR_IO);
4590 if (status < 0)
4591 goto xdr_error;
4592
4593 status = verify_attr_len(xdr, savep, attrlen);
4594 res->bm = bitmap[0];
4595
4596 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4597 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4598 res->wr_io_sz);
4599xdr_error:
4600 dprintk("%s ret=%d!\n", __func__, status);
4601 return status;
4602}
4603
4604/*
4605 * Thresholds on pNFS direct I/O vrs MDS I/O
4606 */
4607static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4608 uint32_t *bitmap,
4609 struct nfs4_threshold *res)
4610{
4611 __be32 *p;
4612 int status = 0;
4613 uint32_t num;
4614
4615 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4616 return -EIO;
4617 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4618 /* Did the server return an unrequested attribute? */
4619 if (unlikely(res == NULL))
4620 return -EREMOTEIO;
4621 p = xdr_inline_decode(xdr, 4);
4622 if (unlikely(!p))
4623 goto out_overflow;
4624 num = be32_to_cpup(p);
4625 if (num == 0)
4626 return 0;
4627 if (num > 1)
4628 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4629 "drivers per filesystem not supported\n",
4630 __func__);
4631
4632 status = decode_first_threshold_item4(xdr, res);
4633 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4634 }
4635 return status;
4636out_overflow:
4637 print_overflow_msg(__func__, xdr);
4638 return -EIO;
4639}
4640
4641static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4642 struct nfs_fattr *fattr, struct nfs_fh *fh,
4643 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4644 const struct nfs_server *server)
4645{
4646 int status;
4647 umode_t fmode = 0;
4648 uint32_t type;
4649 int32_t err;
4650
4651 status = decode_attr_type(xdr, bitmap, &type);
4652 if (status < 0)
4653 goto xdr_error;
4654 fattr->mode = 0;
4655 if (status != 0) {
4656 fattr->mode |= nfs_type2fmt[type];
4657 fattr->valid |= status;
4658 }
4659
4660 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4661 if (status < 0)
4662 goto xdr_error;
4663 fattr->valid |= status;
4664
4665 status = decode_attr_size(xdr, bitmap, &fattr->size);
4666 if (status < 0)
4667 goto xdr_error;
4668 fattr->valid |= status;
4669
4670 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4671 if (status < 0)
4672 goto xdr_error;
4673 fattr->valid |= status;
4674
4675 err = 0;
4676 status = decode_attr_error(xdr, bitmap, &err);
4677 if (status < 0)
4678 goto xdr_error;
4679
4680 status = decode_attr_filehandle(xdr, bitmap, fh);
4681 if (status < 0)
4682 goto xdr_error;
4683
4684 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4685 if (status < 0)
4686 goto xdr_error;
4687 fattr->valid |= status;
4688
4689 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4690 if (status < 0)
4691 goto xdr_error;
4692 fattr->valid |= status;
4693
4694 status = -EIO;
4695 if (unlikely(bitmap[0]))
4696 goto xdr_error;
4697
4698 status = decode_attr_mode(xdr, bitmap, &fmode);
4699 if (status < 0)
4700 goto xdr_error;
4701 if (status != 0) {
4702 fattr->mode |= fmode;
4703 fattr->valid |= status;
4704 }
4705
4706 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4707 if (status < 0)
4708 goto xdr_error;
4709 fattr->valid |= status;
4710
4711 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4712 if (status < 0)
4713 goto xdr_error;
4714 fattr->valid |= status;
4715
4716 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4717 if (status < 0)
4718 goto xdr_error;
4719 fattr->valid |= status;
4720
4721 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4722 if (status < 0)
4723 goto xdr_error;
4724 fattr->valid |= status;
4725
4726 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4727 if (status < 0)
4728 goto xdr_error;
4729 fattr->valid |= status;
4730
4731 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4732 if (status < 0)
4733 goto xdr_error;
4734 fattr->valid |= status;
4735
4736 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4737 if (status < 0)
4738 goto xdr_error;
4739 fattr->valid |= status;
4740
4741 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4742 if (status < 0)
4743 goto xdr_error;
4744 fattr->valid |= status;
4745
4746 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4747 if (status < 0)
4748 goto xdr_error;
4749 fattr->valid |= status;
4750
4751 status = -EIO;
4752 if (unlikely(bitmap[1]))
4753 goto xdr_error;
4754
4755 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4756 if (status < 0)
4757 goto xdr_error;
4758
4759 if (label) {
4760 status = decode_attr_security_label(xdr, bitmap, label);
4761 if (status < 0)
4762 goto xdr_error;
4763 fattr->valid |= status;
4764 }
4765
4766xdr_error:
4767 dprintk("%s: xdr returned %d\n", __func__, -status);
4768 return status;
4769}
4770
4771static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4772 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4773 struct nfs4_label *label, const struct nfs_server *server)
4774{
4775 unsigned int savep;
4776 uint32_t attrlen,
4777 bitmap[3] = {0};
4778 int status;
4779
4780 status = decode_op_hdr(xdr, OP_GETATTR);
4781 if (status < 0)
4782 goto xdr_error;
4783
4784 status = decode_attr_bitmap(xdr, bitmap);
4785 if (status < 0)
4786 goto xdr_error;
4787
4788 status = decode_attr_length(xdr, &attrlen, &savep);
4789 if (status < 0)
4790 goto xdr_error;
4791
4792 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4793 label, server);
4794 if (status < 0)
4795 goto xdr_error;
4796
4797 status = verify_attr_len(xdr, savep, attrlen);
4798xdr_error:
4799 dprintk("%s: xdr returned %d\n", __func__, -status);
4800 return status;
4801}
4802
4803static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4804 struct nfs4_label *label, const struct nfs_server *server)
4805{
4806 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4807}
4808
4809static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4810 const struct nfs_server *server)
4811{
4812 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4813}
4814
4815/*
4816 * Decode potentially multiple layout types.
4817 */
4818static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4819 struct nfs_fsinfo *fsinfo)
4820{
4821 __be32 *p;
4822 uint32_t i;
4823
4824 p = xdr_inline_decode(xdr, 4);
4825 if (unlikely(!p))
4826 goto out_overflow;
4827 fsinfo->nlayouttypes = be32_to_cpup(p);
4828
4829 /* pNFS is not supported by the underlying file system */
4830 if (fsinfo->nlayouttypes == 0)
4831 return 0;
4832
4833 /* Decode and set first layout type, move xdr->p past unused types */
4834 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4835 if (unlikely(!p))
4836 goto out_overflow;
4837
4838 /* If we get too many, then just cap it at the max */
4839 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4840 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4841 __func__, fsinfo->nlayouttypes);
4842 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4843 }
4844
4845 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4846 fsinfo->layouttype[i] = be32_to_cpup(p++);
4847 return 0;
4848out_overflow:
4849 print_overflow_msg(__func__, xdr);
4850 return -EIO;
4851}
4852
4853/*
4854 * The type of file system exported.
4855 * Note we must ensure that layouttype is set in any non-error case.
4856 */
4857static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4858 struct nfs_fsinfo *fsinfo)
4859{
4860 int status = 0;
4861
4862 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4863 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4864 return -EIO;
4865 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4866 status = decode_pnfs_layout_types(xdr, fsinfo);
4867 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4868 }
4869 return status;
4870}
4871
4872/*
4873 * The prefered block size for layout directed io
4874 */
4875static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4876 uint32_t *res)
4877{
4878 __be32 *p;
4879
4880 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4881 *res = 0;
4882 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4883 p = xdr_inline_decode(xdr, 4);
4884 if (unlikely(!p)) {
4885 print_overflow_msg(__func__, xdr);
4886 return -EIO;
4887 }
4888 *res = be32_to_cpup(p);
4889 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4890 }
4891 return 0;
4892}
4893
4894/*
4895 * The granularity of a CLONE operation.
4896 */
4897static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4898 uint32_t *res)
4899{
4900 __be32 *p;
4901
4902 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4903 *res = 0;
4904 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4905 p = xdr_inline_decode(xdr, 4);
4906 if (unlikely(!p)) {
4907 print_overflow_msg(__func__, xdr);
4908 return -EIO;
4909 }
4910 *res = be32_to_cpup(p);
4911 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4912 }
4913 return 0;
4914}
4915
4916static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4917{
4918 unsigned int savep;
4919 uint32_t attrlen, bitmap[3];
4920 int status;
4921
4922 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4923 goto xdr_error;
4924 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4925 goto xdr_error;
4926 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4927 goto xdr_error;
4928
4929 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4930
4931 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4932 goto xdr_error;
4933 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4934 goto xdr_error;
4935 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4936 goto xdr_error;
4937 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4938 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4939 goto xdr_error;
4940 fsinfo->wtpref = fsinfo->wtmax;
4941
4942 status = -EIO;
4943 if (unlikely(bitmap[0]))
4944 goto xdr_error;
4945
4946 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4947 if (status != 0)
4948 goto xdr_error;
4949 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4950 if (status != 0)
4951 goto xdr_error;
4952
4953 status = -EIO;
4954 if (unlikely(bitmap[1]))
4955 goto xdr_error;
4956
4957 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4958 if (status)
4959 goto xdr_error;
4960 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4961 if (status)
4962 goto xdr_error;
4963
4964 status = verify_attr_len(xdr, savep, attrlen);
4965xdr_error:
4966 dprintk("%s: xdr returned %d!\n", __func__, -status);
4967 return status;
4968}
4969
4970static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4971{
4972 __be32 *p;
4973 uint32_t len;
4974 int status;
4975
4976 /* Zero handle first to allow comparisons */
4977 memset(fh, 0, sizeof(*fh));
4978
4979 status = decode_op_hdr(xdr, OP_GETFH);
4980 if (status)
4981 return status;
4982
4983 p = xdr_inline_decode(xdr, 4);
4984 if (unlikely(!p))
4985 goto out_overflow;
4986 len = be32_to_cpup(p);
4987 if (len > NFS4_FHSIZE)
4988 return -EIO;
4989 fh->size = len;
4990 p = xdr_inline_decode(xdr, len);
4991 if (unlikely(!p))
4992 goto out_overflow;
4993 memcpy(fh->data, p, len);
4994 return 0;
4995out_overflow:
4996 print_overflow_msg(__func__, xdr);
4997 return -EIO;
4998}
4999
5000static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5001{
5002 int status;
5003
5004 status = decode_op_hdr(xdr, OP_LINK);
5005 if (status)
5006 return status;
5007 return decode_change_info(xdr, cinfo);
5008}
5009
5010/*
5011 * We create the owner, so we know a proper owner.id length is 4.
5012 */
5013static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
5014{
5015 uint64_t offset, length, clientid;
5016 __be32 *p;
5017 uint32_t namelen, type;
5018
5019 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
5020 if (unlikely(!p))
5021 goto out_overflow;
5022 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
5023 p = xdr_decode_hyper(p, &length);
5024 type = be32_to_cpup(p++); /* 4 byte read */
5025 if (fl != NULL) { /* manipulate file lock */
5026 fl->fl_start = (loff_t)offset;
5027 fl->fl_end = fl->fl_start + (loff_t)length - 1;
5028 if (length == ~(uint64_t)0)
5029 fl->fl_end = OFFSET_MAX;
5030 fl->fl_type = F_WRLCK;
5031 if (type & 1)
5032 fl->fl_type = F_RDLCK;
5033 fl->fl_pid = 0;
5034 }
5035 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5036 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5037 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5038 if (likely(p))
5039 return -NFS4ERR_DENIED;
5040out_overflow:
5041 print_overflow_msg(__func__, xdr);
5042 return -EIO;
5043}
5044
5045static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5046{
5047 int status;
5048
5049 status = decode_op_hdr(xdr, OP_LOCK);
5050 if (status == -EIO)
5051 goto out;
5052 if (status == 0) {
5053 status = decode_lock_stateid(xdr, &res->stateid);
5054 if (unlikely(status))
5055 goto out;
5056 } else if (status == -NFS4ERR_DENIED)
5057 status = decode_lock_denied(xdr, NULL);
5058 if (res->open_seqid != NULL)
5059 nfs_increment_open_seqid(status, res->open_seqid);
5060 nfs_increment_lock_seqid(status, res->lock_seqid);
5061out:
5062 return status;
5063}
5064
5065static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5066{
5067 int status;
5068 status = decode_op_hdr(xdr, OP_LOCKT);
5069 if (status == -NFS4ERR_DENIED)
5070 return decode_lock_denied(xdr, res->denied);
5071 return status;
5072}
5073
5074static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5075{
5076 int status;
5077
5078 status = decode_op_hdr(xdr, OP_LOCKU);
5079 if (status != -EIO)
5080 nfs_increment_lock_seqid(status, res->seqid);
5081 if (status == 0)
5082 status = decode_lock_stateid(xdr, &res->stateid);
5083 return status;
5084}
5085
5086static int decode_release_lockowner(struct xdr_stream *xdr)
5087{
5088 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5089}
5090
5091static int decode_lookup(struct xdr_stream *xdr)
5092{
5093 return decode_op_hdr(xdr, OP_LOOKUP);
5094}
5095
5096static int decode_lookupp(struct xdr_stream *xdr)
5097{
5098 return decode_op_hdr(xdr, OP_LOOKUPP);
5099}
5100
5101/* This is too sick! */
5102static int decode_space_limit(struct xdr_stream *xdr,
5103 unsigned long *pagemod_limit)
5104{
5105 __be32 *p;
5106 uint32_t limit_type, nblocks, blocksize;
5107 u64 maxsize = 0;
5108
5109 p = xdr_inline_decode(xdr, 12);
5110 if (unlikely(!p))
5111 goto out_overflow;
5112 limit_type = be32_to_cpup(p++);
5113 switch (limit_type) {
5114 case NFS4_LIMIT_SIZE:
5115 xdr_decode_hyper(p, &maxsize);
5116 break;
5117 case NFS4_LIMIT_BLOCKS:
5118 nblocks = be32_to_cpup(p++);
5119 blocksize = be32_to_cpup(p);
5120 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5121 }
5122 maxsize >>= PAGE_SHIFT;
5123 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5124 return 0;
5125out_overflow:
5126 print_overflow_msg(__func__, xdr);
5127 return -EIO;
5128}
5129
5130static int decode_rw_delegation(struct xdr_stream *xdr,
5131 uint32_t delegation_type,
5132 struct nfs_openres *res)
5133{
5134 __be32 *p;
5135 int status;
5136
5137 status = decode_delegation_stateid(xdr, &res->delegation);
5138 if (unlikely(status))
5139 return status;
5140 p = xdr_inline_decode(xdr, 4);
5141 if (unlikely(!p))
5142 goto out_overflow;
5143 res->do_recall = be32_to_cpup(p);
5144
5145 switch (delegation_type) {
5146 case NFS4_OPEN_DELEGATE_READ:
5147 res->delegation_type = FMODE_READ;
5148 break;
5149 case NFS4_OPEN_DELEGATE_WRITE:
5150 res->delegation_type = FMODE_WRITE|FMODE_READ;
5151 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5152 return -EIO;
5153 }
5154 return decode_ace(xdr, NULL);
5155out_overflow:
5156 print_overflow_msg(__func__, xdr);
5157 return -EIO;
5158}
5159
5160static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5161{
5162 __be32 *p;
5163 uint32_t why_no_delegation;
5164
5165 p = xdr_inline_decode(xdr, 4);
5166 if (unlikely(!p))
5167 goto out_overflow;
5168 why_no_delegation = be32_to_cpup(p);
5169 switch (why_no_delegation) {
5170 case WND4_CONTENTION:
5171 case WND4_RESOURCE:
5172 xdr_inline_decode(xdr, 4);
5173 /* Ignore for now */
5174 }
5175 return 0;
5176out_overflow:
5177 print_overflow_msg(__func__, xdr);
5178 return -EIO;
5179}
5180
5181static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5182{
5183 __be32 *p;
5184 uint32_t delegation_type;
5185
5186 p = xdr_inline_decode(xdr, 4);
5187 if (unlikely(!p))
5188 goto out_overflow;
5189 delegation_type = be32_to_cpup(p);
5190 res->delegation_type = 0;
5191 switch (delegation_type) {
5192 case NFS4_OPEN_DELEGATE_NONE:
5193 return 0;
5194 case NFS4_OPEN_DELEGATE_READ:
5195 case NFS4_OPEN_DELEGATE_WRITE:
5196 return decode_rw_delegation(xdr, delegation_type, res);
5197 case NFS4_OPEN_DELEGATE_NONE_EXT:
5198 return decode_no_delegation(xdr, res);
5199 }
5200 return -EIO;
5201out_overflow:
5202 print_overflow_msg(__func__, xdr);
5203 return -EIO;
5204}
5205
5206static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5207{
5208 __be32 *p;
5209 uint32_t savewords, bmlen, i;
5210 int status;
5211
5212 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5213 return status;
5214 nfs_increment_open_seqid(status, res->seqid);
5215 if (status)
5216 return status;
5217 status = decode_open_stateid(xdr, &res->stateid);
5218 if (unlikely(status))
5219 return status;
5220
5221 decode_change_info(xdr, &res->cinfo);
5222
5223 p = xdr_inline_decode(xdr, 8);
5224 if (unlikely(!p))
5225 goto out_overflow;
5226 res->rflags = be32_to_cpup(p++);
5227 bmlen = be32_to_cpup(p);
5228 if (bmlen > 10)
5229 goto xdr_error;
5230
5231 p = xdr_inline_decode(xdr, bmlen << 2);
5232 if (unlikely(!p))
5233 goto out_overflow;
5234 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5235 for (i = 0; i < savewords; ++i)
5236 res->attrset[i] = be32_to_cpup(p++);
5237 for (; i < NFS4_BITMAP_SIZE; i++)
5238 res->attrset[i] = 0;
5239
5240 return decode_delegation(xdr, res);
5241xdr_error:
5242 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5243 return -EIO;
5244out_overflow:
5245 print_overflow_msg(__func__, xdr);
5246 return -EIO;
5247}
5248
5249static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5250{
5251 int status;
5252
5253 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5254 if (status != -EIO)
5255 nfs_increment_open_seqid(status, res->seqid);
5256 if (!status)
5257 status = decode_open_stateid(xdr, &res->stateid);
5258 return status;
5259}
5260
5261static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5262{
5263 int status;
5264
5265 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5266 if (status != -EIO)
5267 nfs_increment_open_seqid(status, res->seqid);
5268 if (!status)
5269 status = decode_open_stateid(xdr, &res->stateid);
5270 return status;
5271}
5272
5273static int decode_putfh(struct xdr_stream *xdr)
5274{
5275 return decode_op_hdr(xdr, OP_PUTFH);
5276}
5277
5278static int decode_putrootfh(struct xdr_stream *xdr)
5279{
5280 return decode_op_hdr(xdr, OP_PUTROOTFH);
5281}
5282
5283static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5284 struct nfs_pgio_res *res)
5285{
5286 __be32 *p;
5287 uint32_t count, eof, recvd;
5288 int status;
5289
5290 status = decode_op_hdr(xdr, OP_READ);
5291 if (status)
5292 return status;
5293 p = xdr_inline_decode(xdr, 8);
5294 if (unlikely(!p))
5295 goto out_overflow;
5296 eof = be32_to_cpup(p++);
5297 count = be32_to_cpup(p);
5298 recvd = xdr_read_pages(xdr, count);
5299 if (count > recvd) {
5300 dprintk("NFS: server cheating in read reply: "
5301 "count %u > recvd %u\n", count, recvd);
5302 count = recvd;
5303 eof = 0;
5304 }
5305 res->eof = eof;
5306 res->count = count;
5307 return 0;
5308out_overflow:
5309 print_overflow_msg(__func__, xdr);
5310 return -EIO;
5311}
5312
5313static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5314{
5315 int status;
5316 __be32 verf[2];
5317
5318 status = decode_op_hdr(xdr, OP_READDIR);
5319 if (!status)
5320 status = decode_verifier(xdr, readdir->verifier.data);
5321 if (unlikely(status))
5322 return status;
5323 memcpy(verf, readdir->verifier.data, sizeof(verf));
5324 dprintk("%s: verifier = %08x:%08x\n",
5325 __func__, verf[0], verf[1]);
5326 return xdr_read_pages(xdr, xdr->buf->page_len);
5327}
5328
5329static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5330{
5331 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5332 u32 len, recvd;
5333 __be32 *p;
5334 int status;
5335
5336 status = decode_op_hdr(xdr, OP_READLINK);
5337 if (status)
5338 return status;
5339
5340 /* Convert length of symlink */
5341 p = xdr_inline_decode(xdr, 4);
5342 if (unlikely(!p))
5343 goto out_overflow;
5344 len = be32_to_cpup(p);
5345 if (len >= rcvbuf->page_len || len <= 0) {
5346 dprintk("nfs: server returned giant symlink!\n");
5347 return -ENAMETOOLONG;
5348 }
5349 recvd = xdr_read_pages(xdr, len);
5350 if (recvd < len) {
5351 dprintk("NFS: server cheating in readlink reply: "
5352 "count %u > recvd %u\n", len, recvd);
5353 return -EIO;
5354 }
5355 /*
5356 * The XDR encode routine has set things up so that
5357 * the link text will be copied directly into the
5358 * buffer. We just have to do overflow-checking,
5359 * and and null-terminate the text (the VFS expects
5360 * null-termination).
5361 */
5362 xdr_terminate_string(rcvbuf, len);
5363 return 0;
5364out_overflow:
5365 print_overflow_msg(__func__, xdr);
5366 return -EIO;
5367}
5368
5369static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5370{
5371 int status;
5372
5373 status = decode_op_hdr(xdr, OP_REMOVE);
5374 if (status)
5375 goto out;
5376 status = decode_change_info(xdr, cinfo);
5377out:
5378 return status;
5379}
5380
5381static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5382 struct nfs4_change_info *new_cinfo)
5383{
5384 int status;
5385
5386 status = decode_op_hdr(xdr, OP_RENAME);
5387 if (status)
5388 goto out;
5389 if ((status = decode_change_info(xdr, old_cinfo)))
5390 goto out;
5391 status = decode_change_info(xdr, new_cinfo);
5392out:
5393 return status;
5394}
5395
5396static int decode_renew(struct xdr_stream *xdr)
5397{
5398 return decode_op_hdr(xdr, OP_RENEW);
5399}
5400
5401static int
5402decode_restorefh(struct xdr_stream *xdr)
5403{
5404 return decode_op_hdr(xdr, OP_RESTOREFH);
5405}
5406
5407static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5408 struct nfs_getaclres *res)
5409{
5410 unsigned int savep;
5411 uint32_t attrlen,
5412 bitmap[3] = {0};
5413 int status;
5414 unsigned int pg_offset;
5415
5416 res->acl_len = 0;
5417 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5418 goto out;
5419
5420 xdr_enter_page(xdr, xdr->buf->page_len);
5421
5422 /* Calculate the offset of the page data */
5423 pg_offset = xdr->buf->head[0].iov_len;
5424
5425 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5426 goto out;
5427 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5428 goto out;
5429
5430 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5431 return -EIO;
5432 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5433
5434 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5435 * are stored with the acl data to handle the problem of
5436 * variable length bitmaps.*/
5437 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5438 res->acl_len = attrlen;
5439
5440 /* Check for receive buffer overflow */
5441 if (res->acl_len > (xdr->nwords << 2) ||
5442 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5443 res->acl_flags |= NFS4_ACL_TRUNC;
5444 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5445 attrlen, xdr->nwords << 2);
5446 }
5447 } else
5448 status = -EOPNOTSUPP;
5449
5450out:
5451 return status;
5452}
5453
5454static int
5455decode_savefh(struct xdr_stream *xdr)
5456{
5457 return decode_op_hdr(xdr, OP_SAVEFH);
5458}
5459
5460static int decode_setattr(struct xdr_stream *xdr)
5461{
5462 int status;
5463
5464 status = decode_op_hdr(xdr, OP_SETATTR);
5465 if (status)
5466 return status;
5467 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5468 return 0;
5469 print_overflow_msg(__func__, xdr);
5470 return -EIO;
5471}
5472
5473static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5474{
5475 __be32 *p;
5476 uint32_t opnum;
5477 int32_t nfserr;
5478
5479 p = xdr_inline_decode(xdr, 8);
5480 if (unlikely(!p))
5481 goto out_overflow;
5482 opnum = be32_to_cpup(p++);
5483 if (opnum != OP_SETCLIENTID) {
5484 dprintk("nfs: decode_setclientid: Server returned operation"
5485 " %d\n", opnum);
5486 return -EIO;
5487 }
5488 nfserr = be32_to_cpup(p);
5489 if (nfserr == NFS_OK) {
5490 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5491 if (unlikely(!p))
5492 goto out_overflow;
5493 p = xdr_decode_hyper(p, &res->clientid);
5494 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5495 } else if (nfserr == NFSERR_CLID_INUSE) {
5496 uint32_t len;
5497
5498 /* skip netid string */
5499 p = xdr_inline_decode(xdr, 4);
5500 if (unlikely(!p))
5501 goto out_overflow;
5502 len = be32_to_cpup(p);
5503 p = xdr_inline_decode(xdr, len);
5504 if (unlikely(!p))
5505 goto out_overflow;
5506
5507 /* skip uaddr string */
5508 p = xdr_inline_decode(xdr, 4);
5509 if (unlikely(!p))
5510 goto out_overflow;
5511 len = be32_to_cpup(p);
5512 p = xdr_inline_decode(xdr, len);
5513 if (unlikely(!p))
5514 goto out_overflow;
5515 return -NFSERR_CLID_INUSE;
5516 } else
5517 return nfs4_stat_to_errno(nfserr);
5518
5519 return 0;
5520out_overflow:
5521 print_overflow_msg(__func__, xdr);
5522 return -EIO;
5523}
5524
5525static int decode_setclientid_confirm(struct xdr_stream *xdr)
5526{
5527 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5528}
5529
5530static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5531{
5532 __be32 *p;
5533 int status;
5534
5535 status = decode_op_hdr(xdr, OP_WRITE);
5536 if (status)
5537 return status;
5538
5539 p = xdr_inline_decode(xdr, 8);
5540 if (unlikely(!p))
5541 goto out_overflow;
5542 res->count = be32_to_cpup(p++);
5543 res->verf->committed = be32_to_cpup(p++);
5544 return decode_write_verifier(xdr, &res->verf->verifier);
5545out_overflow:
5546 print_overflow_msg(__func__, xdr);
5547 return -EIO;
5548}
5549
5550static int decode_delegreturn(struct xdr_stream *xdr)
5551{
5552 return decode_op_hdr(xdr, OP_DELEGRETURN);
5553}
5554
5555static int decode_secinfo_gss(struct xdr_stream *xdr,
5556 struct nfs4_secinfo4 *flavor)
5557{
5558 u32 oid_len;
5559 __be32 *p;
5560
5561 p = xdr_inline_decode(xdr, 4);
5562 if (unlikely(!p))
5563 goto out_overflow;
5564 oid_len = be32_to_cpup(p);
5565 if (oid_len > GSS_OID_MAX_LEN)
5566 goto out_err;
5567
5568 p = xdr_inline_decode(xdr, oid_len);
5569 if (unlikely(!p))
5570 goto out_overflow;
5571 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5572 flavor->flavor_info.oid.len = oid_len;
5573
5574 p = xdr_inline_decode(xdr, 8);
5575 if (unlikely(!p))
5576 goto out_overflow;
5577 flavor->flavor_info.qop = be32_to_cpup(p++);
5578 flavor->flavor_info.service = be32_to_cpup(p);
5579
5580 return 0;
5581
5582out_overflow:
5583 print_overflow_msg(__func__, xdr);
5584 return -EIO;
5585out_err:
5586 return -EINVAL;
5587}
5588
5589static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5590{
5591 struct nfs4_secinfo4 *sec_flavor;
5592 unsigned int i, num_flavors;
5593 int status;
5594 __be32 *p;
5595
5596 p = xdr_inline_decode(xdr, 4);
5597 if (unlikely(!p))
5598 goto out_overflow;
5599
5600 res->flavors->num_flavors = 0;
5601 num_flavors = be32_to_cpup(p);
5602
5603 for (i = 0; i < num_flavors; i++) {
5604 sec_flavor = &res->flavors->flavors[i];
5605 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5606 break;
5607
5608 p = xdr_inline_decode(xdr, 4);
5609 if (unlikely(!p))
5610 goto out_overflow;
5611 sec_flavor->flavor = be32_to_cpup(p);
5612
5613 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5614 status = decode_secinfo_gss(xdr, sec_flavor);
5615 if (status)
5616 goto out;
5617 }
5618 res->flavors->num_flavors++;
5619 }
5620
5621 status = 0;
5622out:
5623 return status;
5624out_overflow:
5625 print_overflow_msg(__func__, xdr);
5626 return -EIO;
5627}
5628
5629static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5630{
5631 int status = decode_op_hdr(xdr, OP_SECINFO);
5632 if (status)
5633 return status;
5634 return decode_secinfo_common(xdr, res);
5635}
5636
5637#if defined(CONFIG_NFS_V4_1)
5638static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5639{
5640 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5641 if (status)
5642 return status;
5643 return decode_secinfo_common(xdr, res);
5644}
5645
5646static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5647{
5648 __be32 *p;
5649 uint32_t bitmap_words;
5650 unsigned int i;
5651
5652 p = xdr_inline_decode(xdr, 4);
5653 if (!p)
5654 return -EIO;
5655 bitmap_words = be32_to_cpup(p++);
5656 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5657 return -EIO;
5658 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5659 for (i = 0; i < bitmap_words; i++)
5660 op_map->u.words[i] = be32_to_cpup(p++);
5661
5662 return 0;
5663}
5664
5665static int decode_exchange_id(struct xdr_stream *xdr,
5666 struct nfs41_exchange_id_res *res)
5667{
5668 __be32 *p;
5669 uint32_t dummy;
5670 char *dummy_str;
5671 int status;
5672 uint32_t impl_id_count;
5673
5674 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5675 if (status)
5676 return status;
5677
5678 p = xdr_inline_decode(xdr, 8);
5679 if (unlikely(!p))
5680 goto out_overflow;
5681 xdr_decode_hyper(p, &res->clientid);
5682 p = xdr_inline_decode(xdr, 12);
5683 if (unlikely(!p))
5684 goto out_overflow;
5685 res->seqid = be32_to_cpup(p++);
5686 res->flags = be32_to_cpup(p++);
5687
5688 res->state_protect.how = be32_to_cpup(p);
5689 switch (res->state_protect.how) {
5690 case SP4_NONE:
5691 break;
5692 case SP4_MACH_CRED:
5693 status = decode_op_map(xdr, &res->state_protect.enforce);
5694 if (status)
5695 return status;
5696 status = decode_op_map(xdr, &res->state_protect.allow);
5697 if (status)
5698 return status;
5699 break;
5700 default:
5701 WARN_ON_ONCE(1);
5702 return -EIO;
5703 }
5704
5705 /* server_owner4.so_minor_id */
5706 p = xdr_inline_decode(xdr, 8);
5707 if (unlikely(!p))
5708 goto out_overflow;
5709 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5710
5711 /* server_owner4.so_major_id */
5712 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5713 if (unlikely(status))
5714 return status;
5715 memcpy(res->server_owner->major_id, dummy_str, dummy);
5716 res->server_owner->major_id_sz = dummy;
5717
5718 /* server_scope4 */
5719 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5720 if (unlikely(status))
5721 return status;
5722 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5723 res->server_scope->server_scope_sz = dummy;
5724
5725 /* Implementation Id */
5726 p = xdr_inline_decode(xdr, 4);
5727 if (unlikely(!p))
5728 goto out_overflow;
5729 impl_id_count = be32_to_cpup(p++);
5730
5731 if (impl_id_count) {
5732 /* nii_domain */
5733 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5734 if (unlikely(status))
5735 return status;
5736 memcpy(res->impl_id->domain, dummy_str, dummy);
5737
5738 /* nii_name */
5739 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5740 if (unlikely(status))
5741 return status;
5742 memcpy(res->impl_id->name, dummy_str, dummy);
5743
5744 /* nii_date */
5745 p = xdr_inline_decode(xdr, 12);
5746 if (unlikely(!p))
5747 goto out_overflow;
5748 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5749 res->impl_id->date.nseconds = be32_to_cpup(p);
5750
5751 /* if there's more than one entry, ignore the rest */
5752 }
5753 return 0;
5754out_overflow:
5755 print_overflow_msg(__func__, xdr);
5756 return -EIO;
5757}
5758
5759static int decode_chan_attrs(struct xdr_stream *xdr,
5760 struct nfs4_channel_attrs *attrs)
5761{
5762 __be32 *p;
5763 u32 nr_attrs, val;
5764
5765 p = xdr_inline_decode(xdr, 28);
5766 if (unlikely(!p))
5767 goto out_overflow;
5768 val = be32_to_cpup(p++); /* headerpadsz */
5769 if (val)
5770 return -EINVAL; /* no support for header padding yet */
5771 attrs->max_rqst_sz = be32_to_cpup(p++);
5772 attrs->max_resp_sz = be32_to_cpup(p++);
5773 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5774 attrs->max_ops = be32_to_cpup(p++);
5775 attrs->max_reqs = be32_to_cpup(p++);
5776 nr_attrs = be32_to_cpup(p);
5777 if (unlikely(nr_attrs > 1)) {
5778 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5779 "count %u\n", __func__, nr_attrs);
5780 return -EINVAL;
5781 }
5782 if (nr_attrs == 1) {
5783 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5784 if (unlikely(!p))
5785 goto out_overflow;
5786 }
5787 return 0;
5788out_overflow:
5789 print_overflow_msg(__func__, xdr);
5790 return -EIO;
5791}
5792
5793static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5794{
5795 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5796}
5797
5798static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5799 struct nfs41_bind_conn_to_session_res *res)
5800{
5801 __be32 *p;
5802 int status;
5803
5804 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5805 if (!status)
5806 status = decode_sessionid(xdr, &res->sessionid);
5807 if (unlikely(status))
5808 return status;
5809
5810 /* dir flags, rdma mode bool */
5811 p = xdr_inline_decode(xdr, 8);
5812 if (unlikely(!p))
5813 goto out_overflow;
5814
5815 res->dir = be32_to_cpup(p++);
5816 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5817 return -EIO;
5818 if (be32_to_cpup(p) == 0)
5819 res->use_conn_in_rdma_mode = false;
5820 else
5821 res->use_conn_in_rdma_mode = true;
5822
5823 return 0;
5824out_overflow:
5825 print_overflow_msg(__func__, xdr);
5826 return -EIO;
5827}
5828
5829static int decode_create_session(struct xdr_stream *xdr,
5830 struct nfs41_create_session_res *res)
5831{
5832 __be32 *p;
5833 int status;
5834
5835 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5836 if (!status)
5837 status = decode_sessionid(xdr, &res->sessionid);
5838 if (unlikely(status))
5839 return status;
5840
5841 /* seqid, flags */
5842 p = xdr_inline_decode(xdr, 8);
5843 if (unlikely(!p))
5844 goto out_overflow;
5845 res->seqid = be32_to_cpup(p++);
5846 res->flags = be32_to_cpup(p);
5847
5848 /* Channel attributes */
5849 status = decode_chan_attrs(xdr, &res->fc_attrs);
5850 if (!status)
5851 status = decode_chan_attrs(xdr, &res->bc_attrs);
5852 return status;
5853out_overflow:
5854 print_overflow_msg(__func__, xdr);
5855 return -EIO;
5856}
5857
5858static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5859{
5860 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5861}
5862
5863static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5864{
5865 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5866}
5867
5868static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5869{
5870 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5871}
5872#endif /* CONFIG_NFS_V4_1 */
5873
5874static int decode_sequence(struct xdr_stream *xdr,
5875 struct nfs4_sequence_res *res,
5876 struct rpc_rqst *rqstp)
5877{
5878#if defined(CONFIG_NFS_V4_1)
5879 struct nfs4_session *session;
5880 struct nfs4_sessionid id;
5881 u32 dummy;
5882 int status;
5883 __be32 *p;
5884
5885 if (res->sr_slot == NULL)
5886 return 0;
5887 if (!res->sr_slot->table->session)
5888 return 0;
5889
5890 status = decode_op_hdr(xdr, OP_SEQUENCE);
5891 if (!status)
5892 status = decode_sessionid(xdr, &id);
5893 if (unlikely(status))
5894 goto out_err;
5895
5896 /*
5897 * If the server returns different values for sessionID, slotID or
5898 * sequence number, the server is looney tunes.
5899 */
5900 status = -EREMOTEIO;
5901 session = res->sr_slot->table->session;
5902
5903 if (memcmp(id.data, session->sess_id.data,
5904 NFS4_MAX_SESSIONID_LEN)) {
5905 dprintk("%s Invalid session id\n", __func__);
5906 goto out_err;
5907 }
5908
5909 p = xdr_inline_decode(xdr, 20);
5910 if (unlikely(!p))
5911 goto out_overflow;
5912
5913 /* seqid */
5914 dummy = be32_to_cpup(p++);
5915 if (dummy != res->sr_slot->seq_nr) {
5916 dprintk("%s Invalid sequence number\n", __func__);
5917 goto out_err;
5918 }
5919 /* slot id */
5920 dummy = be32_to_cpup(p++);
5921 if (dummy != res->sr_slot->slot_nr) {
5922 dprintk("%s Invalid slot id\n", __func__);
5923 goto out_err;
5924 }
5925 /* highest slot id */
5926 res->sr_highest_slotid = be32_to_cpup(p++);
5927 /* target highest slot id */
5928 res->sr_target_highest_slotid = be32_to_cpup(p++);
5929 /* result flags */
5930 res->sr_status_flags = be32_to_cpup(p);
5931 status = 0;
5932out_err:
5933 res->sr_status = status;
5934 return status;
5935out_overflow:
5936 print_overflow_msg(__func__, xdr);
5937 status = -EIO;
5938 goto out_err;
5939#else /* CONFIG_NFS_V4_1 */
5940 return 0;
5941#endif /* CONFIG_NFS_V4_1 */
5942}
5943
5944#if defined(CONFIG_NFS_V4_1)
5945static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5946{
5947 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5948 return decode_stateid(xdr, stateid);
5949}
5950
5951static int decode_getdeviceinfo(struct xdr_stream *xdr,
5952 struct nfs4_getdeviceinfo_res *res)
5953{
5954 struct pnfs_device *pdev = res->pdev;
5955 __be32 *p;
5956 uint32_t len, type;
5957 int status;
5958
5959 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5960 if (status) {
5961 if (status == -ETOOSMALL) {
5962 p = xdr_inline_decode(xdr, 4);
5963 if (unlikely(!p))
5964 goto out_overflow;
5965 pdev->mincount = be32_to_cpup(p);
5966 dprintk("%s: Min count too small. mincnt = %u\n",
5967 __func__, pdev->mincount);
5968 }
5969 return status;
5970 }
5971
5972 p = xdr_inline_decode(xdr, 8);
5973 if (unlikely(!p))
5974 goto out_overflow;
5975 type = be32_to_cpup(p++);
5976 if (type != pdev->layout_type) {
5977 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5978 __func__, pdev->layout_type, type);
5979 return -EINVAL;
5980 }
5981 /*
5982 * Get the length of the opaque device_addr4. xdr_read_pages places
5983 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5984 * and places the remaining xdr data in xdr_buf->tail
5985 */
5986 pdev->mincount = be32_to_cpup(p);
5987 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5988 goto out_overflow;
5989
5990 /* Parse notification bitmap, verifying that it is zero. */
5991 p = xdr_inline_decode(xdr, 4);
5992 if (unlikely(!p))
5993 goto out_overflow;
5994 len = be32_to_cpup(p);
5995 if (len) {
5996 uint32_t i;
5997
5998 p = xdr_inline_decode(xdr, 4 * len);
5999 if (unlikely(!p))
6000 goto out_overflow;
6001
6002 res->notification = be32_to_cpup(p++);
6003 for (i = 1; i < len; i++) {
6004 if (be32_to_cpup(p++)) {
6005 dprintk("%s: unsupported notification\n",
6006 __func__);
6007 return -EIO;
6008 }
6009 }
6010 }
6011 return 0;
6012out_overflow:
6013 print_overflow_msg(__func__, xdr);
6014 return -EIO;
6015}
6016
6017static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6018 struct nfs4_layoutget_res *res)
6019{
6020 __be32 *p;
6021 int status;
6022 u32 layout_count;
6023 u32 recvd;
6024
6025 status = decode_op_hdr(xdr, OP_LAYOUTGET);
6026 if (status)
6027 return status;
6028 p = xdr_inline_decode(xdr, 4);
6029 if (unlikely(!p))
6030 goto out_overflow;
6031 res->return_on_close = be32_to_cpup(p);
6032 decode_layout_stateid(xdr, &res->stateid);
6033 p = xdr_inline_decode(xdr, 4);
6034 if (unlikely(!p))
6035 goto out_overflow;
6036 layout_count = be32_to_cpup(p);
6037 if (!layout_count) {
6038 dprintk("%s: server responded with empty layout array\n",
6039 __func__);
6040 return -EINVAL;
6041 }
6042
6043 p = xdr_inline_decode(xdr, 28);
6044 if (unlikely(!p))
6045 goto out_overflow;
6046 p = xdr_decode_hyper(p, &res->range.offset);
6047 p = xdr_decode_hyper(p, &res->range.length);
6048 res->range.iomode = be32_to_cpup(p++);
6049 res->type = be32_to_cpup(p++);
6050 res->layoutp->len = be32_to_cpup(p);
6051
6052 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6053 __func__,
6054 (unsigned long)res->range.offset,
6055 (unsigned long)res->range.length,
6056 res->range.iomode,
6057 res->type,
6058 res->layoutp->len);
6059
6060 recvd = xdr_read_pages(xdr, res->layoutp->len);
6061 if (res->layoutp->len > recvd) {
6062 dprintk("NFS: server cheating in layoutget reply: "
6063 "layout len %u > recvd %u\n",
6064 res->layoutp->len, recvd);
6065 return -EINVAL;
6066 }
6067
6068 if (layout_count > 1) {
6069 /* We only handle a length one array at the moment. Any
6070 * further entries are just ignored. Note that this means
6071 * the client may see a response that is less than the
6072 * minimum it requested.
6073 */
6074 dprintk("%s: server responded with %d layouts, dropping tail\n",
6075 __func__, layout_count);
6076 }
6077
6078 return 0;
6079out_overflow:
6080 print_overflow_msg(__func__, xdr);
6081 return -EIO;
6082}
6083
6084static int decode_layoutreturn(struct xdr_stream *xdr,
6085 struct nfs4_layoutreturn_res *res)
6086{
6087 __be32 *p;
6088 int status;
6089
6090 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6091 if (status)
6092 return status;
6093 p = xdr_inline_decode(xdr, 4);
6094 if (unlikely(!p))
6095 goto out_overflow;
6096 res->lrs_present = be32_to_cpup(p);
6097 if (res->lrs_present)
6098 status = decode_layout_stateid(xdr, &res->stateid);
6099 else
6100 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6101 return status;
6102out_overflow:
6103 print_overflow_msg(__func__, xdr);
6104 return -EIO;
6105}
6106
6107static int decode_layoutcommit(struct xdr_stream *xdr,
6108 struct rpc_rqst *req,
6109 struct nfs4_layoutcommit_res *res)
6110{
6111 __be32 *p;
6112 __u32 sizechanged;
6113 int status;
6114
6115 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6116 res->status = status;
6117 if (status)
6118 return status;
6119
6120 p = xdr_inline_decode(xdr, 4);
6121 if (unlikely(!p))
6122 goto out_overflow;
6123 sizechanged = be32_to_cpup(p);
6124
6125 if (sizechanged) {
6126 /* throw away new size */
6127 p = xdr_inline_decode(xdr, 8);
6128 if (unlikely(!p))
6129 goto out_overflow;
6130 }
6131 return 0;
6132out_overflow:
6133 print_overflow_msg(__func__, xdr);
6134 return -EIO;
6135}
6136
6137static int decode_test_stateid(struct xdr_stream *xdr,
6138 struct nfs41_test_stateid_res *res)
6139{
6140 __be32 *p;
6141 int status;
6142 int num_res;
6143
6144 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6145 if (status)
6146 return status;
6147
6148 p = xdr_inline_decode(xdr, 4);
6149 if (unlikely(!p))
6150 goto out_overflow;
6151 num_res = be32_to_cpup(p++);
6152 if (num_res != 1)
6153 goto out;
6154
6155 p = xdr_inline_decode(xdr, 4);
6156 if (unlikely(!p))
6157 goto out_overflow;
6158 res->status = be32_to_cpup(p++);
6159
6160 return status;
6161out_overflow:
6162 print_overflow_msg(__func__, xdr);
6163out:
6164 return -EIO;
6165}
6166
6167static int decode_free_stateid(struct xdr_stream *xdr,
6168 struct nfs41_free_stateid_res *res)
6169{
6170 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6171 return res->status;
6172}
6173#else
6174static inline
6175int decode_layoutreturn(struct xdr_stream *xdr,
6176 struct nfs4_layoutreturn_res *res)
6177{
6178 return 0;
6179}
6180#endif /* CONFIG_NFS_V4_1 */
6181
6182/*
6183 * END OF "GENERIC" DECODE ROUTINES.
6184 */
6185
6186/*
6187 * Decode OPEN_DOWNGRADE response
6188 */
6189static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6190 struct xdr_stream *xdr,
6191 void *data)
6192{
6193 struct nfs_closeres *res = data;
6194 struct compound_hdr hdr;
6195 int status;
6196
6197 status = decode_compound_hdr(xdr, &hdr);
6198 if (status)
6199 goto out;
6200 status = decode_sequence(xdr, &res->seq_res, rqstp);
6201 if (status)
6202 goto out;
6203 status = decode_putfh(xdr);
6204 if (status)
6205 goto out;
6206 if (res->lr_res) {
6207 status = decode_layoutreturn(xdr, res->lr_res);
6208 res->lr_ret = status;
6209 if (status)
6210 goto out;
6211 }
6212 status = decode_open_downgrade(xdr, res);
6213out:
6214 return status;
6215}
6216
6217/*
6218 * Decode ACCESS response
6219 */
6220static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6221 void *data)
6222{
6223 struct nfs4_accessres *res = data;
6224 struct compound_hdr hdr;
6225 int status;
6226
6227 status = decode_compound_hdr(xdr, &hdr);
6228 if (status)
6229 goto out;
6230 status = decode_sequence(xdr, &res->seq_res, rqstp);
6231 if (status)
6232 goto out;
6233 status = decode_putfh(xdr);
6234 if (status != 0)
6235 goto out;
6236 status = decode_access(xdr, &res->supported, &res->access);
6237 if (status != 0)
6238 goto out;
6239 if (res->fattr)
6240 decode_getfattr(xdr, res->fattr, res->server);
6241out:
6242 return status;
6243}
6244
6245/*
6246 * Decode LOOKUP response
6247 */
6248static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6249 void *data)
6250{
6251 struct nfs4_lookup_res *res = data;
6252 struct compound_hdr hdr;
6253 int status;
6254
6255 status = decode_compound_hdr(xdr, &hdr);
6256 if (status)
6257 goto out;
6258 status = decode_sequence(xdr, &res->seq_res, rqstp);
6259 if (status)
6260 goto out;
6261 status = decode_putfh(xdr);
6262 if (status)
6263 goto out;
6264 status = decode_lookup(xdr);
6265 if (status)
6266 goto out;
6267 status = decode_getfh(xdr, res->fh);
6268 if (status)
6269 goto out;
6270 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6271out:
6272 return status;
6273}
6274
6275/*
6276 * Decode LOOKUPP response
6277 */
6278static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6279 void *data)
6280{
6281 struct nfs4_lookupp_res *res = data;
6282 struct compound_hdr hdr;
6283 int status;
6284
6285 status = decode_compound_hdr(xdr, &hdr);
6286 if (status)
6287 goto out;
6288 status = decode_sequence(xdr, &res->seq_res, rqstp);
6289 if (status)
6290 goto out;
6291 status = decode_putfh(xdr);
6292 if (status)
6293 goto out;
6294 status = decode_lookupp(xdr);
6295 if (status)
6296 goto out;
6297 status = decode_getfh(xdr, res->fh);
6298 if (status)
6299 goto out;
6300 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6301out:
6302 return status;
6303}
6304
6305/*
6306 * Decode LOOKUP_ROOT response
6307 */
6308static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6309 struct xdr_stream *xdr,
6310 void *data)
6311{
6312 struct nfs4_lookup_res *res = data;
6313 struct compound_hdr hdr;
6314 int status;
6315
6316 status = decode_compound_hdr(xdr, &hdr);
6317 if (status)
6318 goto out;
6319 status = decode_sequence(xdr, &res->seq_res, rqstp);
6320 if (status)
6321 goto out;
6322 status = decode_putrootfh(xdr);
6323 if (status)
6324 goto out;
6325 status = decode_getfh(xdr, res->fh);
6326 if (status == 0)
6327 status = decode_getfattr_label(xdr, res->fattr,
6328 res->label, res->server);
6329out:
6330 return status;
6331}
6332
6333/*
6334 * Decode REMOVE response
6335 */
6336static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6337 void *data)
6338{
6339 struct nfs_removeres *res = data;
6340 struct compound_hdr hdr;
6341 int status;
6342
6343 status = decode_compound_hdr(xdr, &hdr);
6344 if (status)
6345 goto out;
6346 status = decode_sequence(xdr, &res->seq_res, rqstp);
6347 if (status)
6348 goto out;
6349 status = decode_putfh(xdr);
6350 if (status)
6351 goto out;
6352 status = decode_remove(xdr, &res->cinfo);
6353out:
6354 return status;
6355}
6356
6357/*
6358 * Decode RENAME response
6359 */
6360static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6361 void *data)
6362{
6363 struct nfs_renameres *res = data;
6364 struct compound_hdr hdr;
6365 int status;
6366
6367 status = decode_compound_hdr(xdr, &hdr);
6368 if (status)
6369 goto out;
6370 status = decode_sequence(xdr, &res->seq_res, rqstp);
6371 if (status)
6372 goto out;
6373 status = decode_putfh(xdr);
6374 if (status)
6375 goto out;
6376 status = decode_savefh(xdr);
6377 if (status)
6378 goto out;
6379 status = decode_putfh(xdr);
6380 if (status)
6381 goto out;
6382 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6383out:
6384 return status;
6385}
6386
6387/*
6388 * Decode LINK response
6389 */
6390static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6391 void *data)
6392{
6393 struct nfs4_link_res *res = data;
6394 struct compound_hdr hdr;
6395 int status;
6396
6397 status = decode_compound_hdr(xdr, &hdr);
6398 if (status)
6399 goto out;
6400 status = decode_sequence(xdr, &res->seq_res, rqstp);
6401 if (status)
6402 goto out;
6403 status = decode_putfh(xdr);
6404 if (status)
6405 goto out;
6406 status = decode_savefh(xdr);
6407 if (status)
6408 goto out;
6409 status = decode_putfh(xdr);
6410 if (status)
6411 goto out;
6412 status = decode_link(xdr, &res->cinfo);
6413 if (status)
6414 goto out;
6415 /*
6416 * Note order: OP_LINK leaves the directory as the current
6417 * filehandle.
6418 */
6419 status = decode_restorefh(xdr);
6420 if (status)
6421 goto out;
6422 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6423out:
6424 return status;
6425}
6426
6427/*
6428 * Decode CREATE response
6429 */
6430static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6431 void *data)
6432{
6433 struct nfs4_create_res *res = data;
6434 struct compound_hdr hdr;
6435 int status;
6436
6437 status = decode_compound_hdr(xdr, &hdr);
6438 if (status)
6439 goto out;
6440 status = decode_sequence(xdr, &res->seq_res, rqstp);
6441 if (status)
6442 goto out;
6443 status = decode_putfh(xdr);
6444 if (status)
6445 goto out;
6446 status = decode_create(xdr, &res->dir_cinfo);
6447 if (status)
6448 goto out;
6449 status = decode_getfh(xdr, res->fh);
6450 if (status)
6451 goto out;
6452 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6453out:
6454 return status;
6455}
6456
6457/*
6458 * Decode SYMLINK response
6459 */
6460static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6461 void *res)
6462{
6463 return nfs4_xdr_dec_create(rqstp, xdr, res);
6464}
6465
6466/*
6467 * Decode GETATTR response
6468 */
6469static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6470 void *data)
6471{
6472 struct nfs4_getattr_res *res = data;
6473 struct compound_hdr hdr;
6474 int status;
6475
6476 status = decode_compound_hdr(xdr, &hdr);
6477 if (status)
6478 goto out;
6479 status = decode_sequence(xdr, &res->seq_res, rqstp);
6480 if (status)
6481 goto out;
6482 status = decode_putfh(xdr);
6483 if (status)
6484 goto out;
6485 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6486out:
6487 return status;
6488}
6489
6490/*
6491 * Encode an SETACL request
6492 */
6493static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6494 const void *data)
6495{
6496 const struct nfs_setaclargs *args = data;
6497 struct compound_hdr hdr = {
6498 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6499 };
6500
6501 encode_compound_hdr(xdr, req, &hdr);
6502 encode_sequence(xdr, &args->seq_args, &hdr);
6503 encode_putfh(xdr, args->fh, &hdr);
6504 encode_setacl(xdr, args, &hdr);
6505 encode_nops(&hdr);
6506}
6507
6508/*
6509 * Decode SETACL response
6510 */
6511static int
6512nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6513 void *data)
6514{
6515 struct nfs_setaclres *res = data;
6516 struct compound_hdr hdr;
6517 int status;
6518
6519 status = decode_compound_hdr(xdr, &hdr);
6520 if (status)
6521 goto out;
6522 status = decode_sequence(xdr, &res->seq_res, rqstp);
6523 if (status)
6524 goto out;
6525 status = decode_putfh(xdr);
6526 if (status)
6527 goto out;
6528 status = decode_setattr(xdr);
6529out:
6530 return status;
6531}
6532
6533/*
6534 * Decode GETACL response
6535 */
6536static int
6537nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6538 void *data)
6539{
6540 struct nfs_getaclres *res = data;
6541 struct compound_hdr hdr;
6542 int status;
6543
6544 if (res->acl_scratch != NULL) {
6545 void *p = page_address(res->acl_scratch);
6546 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6547 }
6548 status = decode_compound_hdr(xdr, &hdr);
6549 if (status)
6550 goto out;
6551 status = decode_sequence(xdr, &res->seq_res, rqstp);
6552 if (status)
6553 goto out;
6554 status = decode_putfh(xdr);
6555 if (status)
6556 goto out;
6557 status = decode_getacl(xdr, rqstp, res);
6558
6559out:
6560 return status;
6561}
6562
6563/*
6564 * Decode CLOSE response
6565 */
6566static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6567 void *data)
6568{
6569 struct nfs_closeres *res = data;
6570 struct compound_hdr hdr;
6571 int status;
6572
6573 status = decode_compound_hdr(xdr, &hdr);
6574 if (status)
6575 goto out;
6576 status = decode_sequence(xdr, &res->seq_res, rqstp);
6577 if (status)
6578 goto out;
6579 status = decode_putfh(xdr);
6580 if (status)
6581 goto out;
6582 if (res->lr_res) {
6583 status = decode_layoutreturn(xdr, res->lr_res);
6584 res->lr_ret = status;
6585 if (status)
6586 goto out;
6587 }
6588 if (res->fattr != NULL) {
6589 status = decode_getfattr(xdr, res->fattr, res->server);
6590 if (status != 0)
6591 goto out;
6592 }
6593 status = decode_close(xdr, res);
6594out:
6595 return status;
6596}
6597
6598/*
6599 * Decode OPEN response
6600 */
6601static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6602 void *data)
6603{
6604 struct nfs_openres *res = data;
6605 struct compound_hdr hdr;
6606 int status;
6607
6608 status = decode_compound_hdr(xdr, &hdr);
6609 if (status)
6610 goto out;
6611 status = decode_sequence(xdr, &res->seq_res, rqstp);
6612 if (status)
6613 goto out;
6614 status = decode_putfh(xdr);
6615 if (status)
6616 goto out;
6617 status = decode_open(xdr, res);
6618 if (status)
6619 goto out;
6620 status = decode_getfh(xdr, &res->fh);
6621 if (status)
6622 goto out;
6623 if (res->access_request)
6624 decode_access(xdr, &res->access_supported, &res->access_result);
6625 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6626out:
6627 return status;
6628}
6629
6630/*
6631 * Decode OPEN_CONFIRM response
6632 */
6633static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6634 struct xdr_stream *xdr,
6635 void *data)
6636{
6637 struct nfs_open_confirmres *res = data;
6638 struct compound_hdr hdr;
6639 int status;
6640
6641 status = decode_compound_hdr(xdr, &hdr);
6642 if (status)
6643 goto out;
6644 status = decode_putfh(xdr);
6645 if (status)
6646 goto out;
6647 status = decode_open_confirm(xdr, res);
6648out:
6649 return status;
6650}
6651
6652/*
6653 * Decode OPEN response
6654 */
6655static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6656 struct xdr_stream *xdr,
6657 void *data)
6658{
6659 struct nfs_openres *res = data;
6660 struct compound_hdr hdr;
6661 int status;
6662
6663 status = decode_compound_hdr(xdr, &hdr);
6664 if (status)
6665 goto out;
6666 status = decode_sequence(xdr, &res->seq_res, rqstp);
6667 if (status)
6668 goto out;
6669 status = decode_putfh(xdr);
6670 if (status)
6671 goto out;
6672 status = decode_open(xdr, res);
6673 if (status)
6674 goto out;
6675 if (res->access_request)
6676 decode_access(xdr, &res->access_supported, &res->access_result);
6677 decode_getfattr(xdr, res->f_attr, res->server);
6678out:
6679 return status;
6680}
6681
6682/*
6683 * Decode SETATTR response
6684 */
6685static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6686 struct xdr_stream *xdr,
6687 void *data)
6688{
6689 struct nfs_setattrres *res = data;
6690 struct compound_hdr hdr;
6691 int status;
6692
6693 status = decode_compound_hdr(xdr, &hdr);
6694 if (status)
6695 goto out;
6696 status = decode_sequence(xdr, &res->seq_res, rqstp);
6697 if (status)
6698 goto out;
6699 status = decode_putfh(xdr);
6700 if (status)
6701 goto out;
6702 status = decode_setattr(xdr);
6703 if (status)
6704 goto out;
6705 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6706out:
6707 return status;
6708}
6709
6710/*
6711 * Decode LOCK response
6712 */
6713static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6714 void *data)
6715{
6716 struct nfs_lock_res *res = data;
6717 struct compound_hdr hdr;
6718 int status;
6719
6720 status = decode_compound_hdr(xdr, &hdr);
6721 if (status)
6722 goto out;
6723 status = decode_sequence(xdr, &res->seq_res, rqstp);
6724 if (status)
6725 goto out;
6726 status = decode_putfh(xdr);
6727 if (status)
6728 goto out;
6729 status = decode_lock(xdr, res);
6730out:
6731 return status;
6732}
6733
6734/*
6735 * Decode LOCKT response
6736 */
6737static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6738 void *data)
6739{
6740 struct nfs_lockt_res *res = data;
6741 struct compound_hdr hdr;
6742 int status;
6743
6744 status = decode_compound_hdr(xdr, &hdr);
6745 if (status)
6746 goto out;
6747 status = decode_sequence(xdr, &res->seq_res, rqstp);
6748 if (status)
6749 goto out;
6750 status = decode_putfh(xdr);
6751 if (status)
6752 goto out;
6753 status = decode_lockt(xdr, res);
6754out:
6755 return status;
6756}
6757
6758/*
6759 * Decode LOCKU response
6760 */
6761static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6762 void *data)
6763{
6764 struct nfs_locku_res *res = data;
6765 struct compound_hdr hdr;
6766 int status;
6767
6768 status = decode_compound_hdr(xdr, &hdr);
6769 if (status)
6770 goto out;
6771 status = decode_sequence(xdr, &res->seq_res, rqstp);
6772 if (status)
6773 goto out;
6774 status = decode_putfh(xdr);
6775 if (status)
6776 goto out;
6777 status = decode_locku(xdr, res);
6778out:
6779 return status;
6780}
6781
6782static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6783 struct xdr_stream *xdr, void *dummy)
6784{
6785 struct compound_hdr hdr;
6786 int status;
6787
6788 status = decode_compound_hdr(xdr, &hdr);
6789 if (!status)
6790 status = decode_release_lockowner(xdr);
6791 return status;
6792}
6793
6794/*
6795 * Decode READLINK response
6796 */
6797static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6798 struct xdr_stream *xdr,
6799 void *data)
6800{
6801 struct nfs4_readlink_res *res = data;
6802 struct compound_hdr hdr;
6803 int status;
6804
6805 status = decode_compound_hdr(xdr, &hdr);
6806 if (status)
6807 goto out;
6808 status = decode_sequence(xdr, &res->seq_res, rqstp);
6809 if (status)
6810 goto out;
6811 status = decode_putfh(xdr);
6812 if (status)
6813 goto out;
6814 status = decode_readlink(xdr, rqstp);
6815out:
6816 return status;
6817}
6818
6819/*
6820 * Decode READDIR response
6821 */
6822static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6823 void *data)
6824{
6825 struct nfs4_readdir_res *res = data;
6826 struct compound_hdr hdr;
6827 int status;
6828
6829 status = decode_compound_hdr(xdr, &hdr);
6830 if (status)
6831 goto out;
6832 status = decode_sequence(xdr, &res->seq_res, rqstp);
6833 if (status)
6834 goto out;
6835 status = decode_putfh(xdr);
6836 if (status)
6837 goto out;
6838 status = decode_readdir(xdr, rqstp, res);
6839out:
6840 return status;
6841}
6842
6843/*
6844 * Decode Read response
6845 */
6846static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6847 void *data)
6848{
6849 struct nfs_pgio_res *res = data;
6850 struct compound_hdr hdr;
6851 int status;
6852
6853 status = decode_compound_hdr(xdr, &hdr);
6854 res->op_status = hdr.status;
6855 if (status)
6856 goto out;
6857 status = decode_sequence(xdr, &res->seq_res, rqstp);
6858 if (status)
6859 goto out;
6860 status = decode_putfh(xdr);
6861 if (status)
6862 goto out;
6863 status = decode_read(xdr, rqstp, res);
6864 if (!status)
6865 status = res->count;
6866out:
6867 return status;
6868}
6869
6870/*
6871 * Decode WRITE response
6872 */
6873static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6874 void *data)
6875{
6876 struct nfs_pgio_res *res = data;
6877 struct compound_hdr hdr;
6878 int status;
6879
6880 status = decode_compound_hdr(xdr, &hdr);
6881 res->op_status = hdr.status;
6882 if (status)
6883 goto out;
6884 status = decode_sequence(xdr, &res->seq_res, rqstp);
6885 if (status)
6886 goto out;
6887 status = decode_putfh(xdr);
6888 if (status)
6889 goto out;
6890 status = decode_write(xdr, res);
6891 if (status)
6892 goto out;
6893 if (res->fattr)
6894 decode_getfattr(xdr, res->fattr, res->server);
6895 if (!status)
6896 status = res->count;
6897out:
6898 return status;
6899}
6900
6901/*
6902 * Decode COMMIT response
6903 */
6904static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6905 void *data)
6906{
6907 struct nfs_commitres *res = data;
6908 struct compound_hdr hdr;
6909 int status;
6910
6911 status = decode_compound_hdr(xdr, &hdr);
6912 res->op_status = hdr.status;
6913 if (status)
6914 goto out;
6915 status = decode_sequence(xdr, &res->seq_res, rqstp);
6916 if (status)
6917 goto out;
6918 status = decode_putfh(xdr);
6919 if (status)
6920 goto out;
6921 status = decode_commit(xdr, res);
6922out:
6923 return status;
6924}
6925
6926/*
6927 * Decode FSINFO response
6928 */
6929static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6930 void *data)
6931{
6932 struct nfs4_fsinfo_res *res = data;
6933 struct compound_hdr hdr;
6934 int status;
6935
6936 status = decode_compound_hdr(xdr, &hdr);
6937 if (!status)
6938 status = decode_sequence(xdr, &res->seq_res, req);
6939 if (!status)
6940 status = decode_putfh(xdr);
6941 if (!status)
6942 status = decode_fsinfo(xdr, res->fsinfo);
6943 return status;
6944}
6945
6946/*
6947 * Decode PATHCONF response
6948 */
6949static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6950 void *data)
6951{
6952 struct nfs4_pathconf_res *res = data;
6953 struct compound_hdr hdr;
6954 int status;
6955
6956 status = decode_compound_hdr(xdr, &hdr);
6957 if (!status)
6958 status = decode_sequence(xdr, &res->seq_res, req);
6959 if (!status)
6960 status = decode_putfh(xdr);
6961 if (!status)
6962 status = decode_pathconf(xdr, res->pathconf);
6963 return status;
6964}
6965
6966/*
6967 * Decode STATFS response
6968 */
6969static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6970 void *data)
6971{
6972 struct nfs4_statfs_res *res = data;
6973 struct compound_hdr hdr;
6974 int status;
6975
6976 status = decode_compound_hdr(xdr, &hdr);
6977 if (!status)
6978 status = decode_sequence(xdr, &res->seq_res, req);
6979 if (!status)
6980 status = decode_putfh(xdr);
6981 if (!status)
6982 status = decode_statfs(xdr, res->fsstat);
6983 return status;
6984}
6985
6986/*
6987 * Decode GETATTR_BITMAP response
6988 */
6989static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6990 struct xdr_stream *xdr,
6991 void *data)
6992{
6993 struct nfs4_server_caps_res *res = data;
6994 struct compound_hdr hdr;
6995 int status;
6996
6997 status = decode_compound_hdr(xdr, &hdr);
6998 if (status)
6999 goto out;
7000 status = decode_sequence(xdr, &res->seq_res, req);
7001 if (status)
7002 goto out;
7003 status = decode_putfh(xdr);
7004 if (status)
7005 goto out;
7006 status = decode_server_caps(xdr, res);
7007out:
7008 return status;
7009}
7010
7011/*
7012 * Decode RENEW response
7013 */
7014static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
7015 void *__unused)
7016{
7017 struct compound_hdr hdr;
7018 int status;
7019
7020 status = decode_compound_hdr(xdr, &hdr);
7021 if (!status)
7022 status = decode_renew(xdr);
7023 return status;
7024}
7025
7026/*
7027 * Decode SETCLIENTID response
7028 */
7029static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
7030 struct xdr_stream *xdr,
7031 void *data)
7032{
7033 struct nfs4_setclientid_res *res = data;
7034 struct compound_hdr hdr;
7035 int status;
7036
7037 status = decode_compound_hdr(xdr, &hdr);
7038 if (!status)
7039 status = decode_setclientid(xdr, res);
7040 return status;
7041}
7042
7043/*
7044 * Decode SETCLIENTID_CONFIRM response
7045 */
7046static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
7047 struct xdr_stream *xdr,
7048 void *data)
7049{
7050 struct compound_hdr hdr;
7051 int status;
7052
7053 status = decode_compound_hdr(xdr, &hdr);
7054 if (!status)
7055 status = decode_setclientid_confirm(xdr);
7056 return status;
7057}
7058
7059/*
7060 * Decode DELEGRETURN response
7061 */
7062static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
7063 struct xdr_stream *xdr,
7064 void *data)
7065{
7066 struct nfs4_delegreturnres *res = data;
7067 struct compound_hdr hdr;
7068 int status;
7069
7070 status = decode_compound_hdr(xdr, &hdr);
7071 if (status)
7072 goto out;
7073 status = decode_sequence(xdr, &res->seq_res, rqstp);
7074 if (status)
7075 goto out;
7076 status = decode_putfh(xdr);
7077 if (status != 0)
7078 goto out;
7079 if (res->lr_res) {
7080 status = decode_layoutreturn(xdr, res->lr_res);
7081 res->lr_ret = status;
7082 if (status)
7083 goto out;
7084 }
7085 if (res->fattr) {
7086 status = decode_getfattr(xdr, res->fattr, res->server);
7087 if (status != 0)
7088 goto out;
7089 }
7090 status = decode_delegreturn(xdr);
7091out:
7092 return status;
7093}
7094
7095/*
7096 * Decode FS_LOCATIONS response
7097 */
7098static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7099 struct xdr_stream *xdr,
7100 void *data)
7101{
7102 struct nfs4_fs_locations_res *res = data;
7103 struct compound_hdr hdr;
7104 int status;
7105
7106 status = decode_compound_hdr(xdr, &hdr);
7107 if (status)
7108 goto out;
7109 status = decode_sequence(xdr, &res->seq_res, req);
7110 if (status)
7111 goto out;
7112 status = decode_putfh(xdr);
7113 if (status)
7114 goto out;
7115 if (res->migration) {
7116 xdr_enter_page(xdr, PAGE_SIZE);
7117 status = decode_getfattr_generic(xdr,
7118 &res->fs_locations->fattr,
7119 NULL, res->fs_locations,
7120 NULL, res->fs_locations->server);
7121 if (status)
7122 goto out;
7123 if (res->renew)
7124 status = decode_renew(xdr);
7125 } else {
7126 status = decode_lookup(xdr);
7127 if (status)
7128 goto out;
7129 xdr_enter_page(xdr, PAGE_SIZE);
7130 status = decode_getfattr_generic(xdr,
7131 &res->fs_locations->fattr,
7132 NULL, res->fs_locations,
7133 NULL, res->fs_locations->server);
7134 }
7135out:
7136 return status;
7137}
7138
7139/*
7140 * Decode SECINFO response
7141 */
7142static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7143 struct xdr_stream *xdr,
7144 void *data)
7145{
7146 struct nfs4_secinfo_res *res = data;
7147 struct compound_hdr hdr;
7148 int status;
7149
7150 status = decode_compound_hdr(xdr, &hdr);
7151 if (status)
7152 goto out;
7153 status = decode_sequence(xdr, &res->seq_res, rqstp);
7154 if (status)
7155 goto out;
7156 status = decode_putfh(xdr);
7157 if (status)
7158 goto out;
7159 status = decode_secinfo(xdr, res);
7160out:
7161 return status;
7162}
7163
7164/*
7165 * Decode FSID_PRESENT response
7166 */
7167static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7168 struct xdr_stream *xdr,
7169 void *data)
7170{
7171 struct nfs4_fsid_present_res *res = data;
7172 struct compound_hdr hdr;
7173 int status;
7174
7175 status = decode_compound_hdr(xdr, &hdr);
7176 if (status)
7177 goto out;
7178 status = decode_sequence(xdr, &res->seq_res, rqstp);
7179 if (status)
7180 goto out;
7181 status = decode_putfh(xdr);
7182 if (status)
7183 goto out;
7184 status = decode_getfh(xdr, res->fh);
7185 if (status)
7186 goto out;
7187 if (res->renew)
7188 status = decode_renew(xdr);
7189out:
7190 return status;
7191}
7192
7193#if defined(CONFIG_NFS_V4_1)
7194/*
7195 * Decode BIND_CONN_TO_SESSION response
7196 */
7197static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7198 struct xdr_stream *xdr,
7199 void *res)
7200{
7201 struct compound_hdr hdr;
7202 int status;
7203
7204 status = decode_compound_hdr(xdr, &hdr);
7205 if (!status)
7206 status = decode_bind_conn_to_session(xdr, res);
7207 return status;
7208}
7209
7210/*
7211 * Decode EXCHANGE_ID response
7212 */
7213static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7214 struct xdr_stream *xdr,
7215 void *res)
7216{
7217 struct compound_hdr hdr;
7218 int status;
7219
7220 status = decode_compound_hdr(xdr, &hdr);
7221 if (!status)
7222 status = decode_exchange_id(xdr, res);
7223 return status;
7224}
7225
7226/*
7227 * Decode CREATE_SESSION response
7228 */
7229static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7230 struct xdr_stream *xdr,
7231 void *res)
7232{
7233 struct compound_hdr hdr;
7234 int status;
7235
7236 status = decode_compound_hdr(xdr, &hdr);
7237 if (!status)
7238 status = decode_create_session(xdr, res);
7239 return status;
7240}
7241
7242/*
7243 * Decode DESTROY_SESSION response
7244 */
7245static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7246 struct xdr_stream *xdr,
7247 void *res)
7248{
7249 struct compound_hdr hdr;
7250 int status;
7251
7252 status = decode_compound_hdr(xdr, &hdr);
7253 if (!status)
7254 status = decode_destroy_session(xdr, res);
7255 return status;
7256}
7257
7258/*
7259 * Decode DESTROY_CLIENTID response
7260 */
7261static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7262 struct xdr_stream *xdr,
7263 void *res)
7264{
7265 struct compound_hdr hdr;
7266 int status;
7267
7268 status = decode_compound_hdr(xdr, &hdr);
7269 if (!status)
7270 status = decode_destroy_clientid(xdr, res);
7271 return status;
7272}
7273
7274/*
7275 * Decode SEQUENCE response
7276 */
7277static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7278 struct xdr_stream *xdr,
7279 void *res)
7280{
7281 struct compound_hdr hdr;
7282 int status;
7283
7284 status = decode_compound_hdr(xdr, &hdr);
7285 if (!status)
7286 status = decode_sequence(xdr, res, rqstp);
7287 return status;
7288}
7289
7290/*
7291 * Decode GET_LEASE_TIME response
7292 */
7293static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7294 struct xdr_stream *xdr,
7295 void *data)
7296{
7297 struct nfs4_get_lease_time_res *res = data;
7298 struct compound_hdr hdr;
7299 int status;
7300
7301 status = decode_compound_hdr(xdr, &hdr);
7302 if (!status)
7303 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7304 if (!status)
7305 status = decode_putrootfh(xdr);
7306 if (!status)
7307 status = decode_fsinfo(xdr, res->lr_fsinfo);
7308 return status;
7309}
7310
7311/*
7312 * Decode RECLAIM_COMPLETE response
7313 */
7314static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7315 struct xdr_stream *xdr,
7316 void *data)
7317{
7318 struct nfs41_reclaim_complete_res *res = data;
7319 struct compound_hdr hdr;
7320 int status;
7321
7322 status = decode_compound_hdr(xdr, &hdr);
7323 if (!status)
7324 status = decode_sequence(xdr, &res->seq_res, rqstp);
7325 if (!status)
7326 status = decode_reclaim_complete(xdr, NULL);
7327 return status;
7328}
7329
7330/*
7331 * Decode GETDEVINFO response
7332 */
7333static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7334 struct xdr_stream *xdr,
7335 void *data)
7336{
7337 struct nfs4_getdeviceinfo_res *res = data;
7338 struct compound_hdr hdr;
7339 int status;
7340
7341 status = decode_compound_hdr(xdr, &hdr);
7342 if (status != 0)
7343 goto out;
7344 status = decode_sequence(xdr, &res->seq_res, rqstp);
7345 if (status != 0)
7346 goto out;
7347 status = decode_getdeviceinfo(xdr, res);
7348out:
7349 return status;
7350}
7351
7352/*
7353 * Decode LAYOUTGET response
7354 */
7355static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7356 struct xdr_stream *xdr,
7357 void *data)
7358{
7359 struct nfs4_layoutget_res *res = data;
7360 struct compound_hdr hdr;
7361 int status;
7362
7363 status = decode_compound_hdr(xdr, &hdr);
7364 if (status)
7365 goto out;
7366 status = decode_sequence(xdr, &res->seq_res, rqstp);
7367 if (status)
7368 goto out;
7369 status = decode_putfh(xdr);
7370 if (status)
7371 goto out;
7372 status = decode_layoutget(xdr, rqstp, res);
7373out:
7374 return status;
7375}
7376
7377/*
7378 * Decode LAYOUTRETURN response
7379 */
7380static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7381 struct xdr_stream *xdr,
7382 void *data)
7383{
7384 struct nfs4_layoutreturn_res *res = data;
7385 struct compound_hdr hdr;
7386 int status;
7387
7388 status = decode_compound_hdr(xdr, &hdr);
7389 if (status)
7390 goto out;
7391 status = decode_sequence(xdr, &res->seq_res, rqstp);
7392 if (status)
7393 goto out;
7394 status = decode_putfh(xdr);
7395 if (status)
7396 goto out;
7397 status = decode_layoutreturn(xdr, res);
7398out:
7399 return status;
7400}
7401
7402/*
7403 * Decode LAYOUTCOMMIT response
7404 */
7405static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7406 struct xdr_stream *xdr,
7407 void *data)
7408{
7409 struct nfs4_layoutcommit_res *res = data;
7410 struct compound_hdr hdr;
7411 int status;
7412
7413 status = decode_compound_hdr(xdr, &hdr);
7414 if (status)
7415 goto out;
7416 status = decode_sequence(xdr, &res->seq_res, rqstp);
7417 if (status)
7418 goto out;
7419 status = decode_putfh(xdr);
7420 if (status)
7421 goto out;
7422 status = decode_layoutcommit(xdr, rqstp, res);
7423 if (status)
7424 goto out;
7425 decode_getfattr(xdr, res->fattr, res->server);
7426out:
7427 return status;
7428}
7429
7430/*
7431 * Decode SECINFO_NO_NAME response
7432 */
7433static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7434 struct xdr_stream *xdr,
7435 void *data)
7436{
7437 struct nfs4_secinfo_res *res = data;
7438 struct compound_hdr hdr;
7439 int status;
7440
7441 status = decode_compound_hdr(xdr, &hdr);
7442 if (status)
7443 goto out;
7444 status = decode_sequence(xdr, &res->seq_res, rqstp);
7445 if (status)
7446 goto out;
7447 status = decode_putrootfh(xdr);
7448 if (status)
7449 goto out;
7450 status = decode_secinfo_no_name(xdr, res);
7451out:
7452 return status;
7453}
7454
7455/*
7456 * Decode TEST_STATEID response
7457 */
7458static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7459 struct xdr_stream *xdr,
7460 void *data)
7461{
7462 struct nfs41_test_stateid_res *res = data;
7463 struct compound_hdr hdr;
7464 int status;
7465
7466 status = decode_compound_hdr(xdr, &hdr);
7467 if (status)
7468 goto out;
7469 status = decode_sequence(xdr, &res->seq_res, rqstp);
7470 if (status)
7471 goto out;
7472 status = decode_test_stateid(xdr, res);
7473out:
7474 return status;
7475}
7476
7477/*
7478 * Decode FREE_STATEID response
7479 */
7480static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7481 struct xdr_stream *xdr,
7482 void *data)
7483{
7484 struct nfs41_free_stateid_res *res = data;
7485 struct compound_hdr hdr;
7486 int status;
7487
7488 status = decode_compound_hdr(xdr, &hdr);
7489 if (status)
7490 goto out;
7491 status = decode_sequence(xdr, &res->seq_res, rqstp);
7492 if (status)
7493 goto out;
7494 status = decode_free_stateid(xdr, res);
7495out:
7496 return status;
7497}
7498#endif /* CONFIG_NFS_V4_1 */
7499
7500/**
7501 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7502 * the local page cache.
7503 * @xdr: XDR stream where entry resides
7504 * @entry: buffer to fill in with entry data
7505 * @plus: boolean indicating whether this should be a readdirplus entry
7506 *
7507 * Returns zero if successful, otherwise a negative errno value is
7508 * returned.
7509 *
7510 * This function is not invoked during READDIR reply decoding, but
7511 * rather whenever an application invokes the getdents(2) system call
7512 * on a directory already in our cache.
7513 */
7514int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7515 bool plus)
7516{
7517 unsigned int savep;
7518 uint32_t bitmap[3] = {0};
7519 uint32_t len;
7520 uint64_t new_cookie;
7521 __be32 *p = xdr_inline_decode(xdr, 4);
7522 if (unlikely(!p))
7523 goto out_overflow;
7524 if (*p == xdr_zero) {
7525 p = xdr_inline_decode(xdr, 4);
7526 if (unlikely(!p))
7527 goto out_overflow;
7528 if (*p == xdr_zero)
7529 return -EAGAIN;
7530 entry->eof = 1;
7531 return -EBADCOOKIE;
7532 }
7533
7534 p = xdr_inline_decode(xdr, 12);
7535 if (unlikely(!p))
7536 goto out_overflow;
7537 p = xdr_decode_hyper(p, &new_cookie);
7538 entry->len = be32_to_cpup(p);
7539
7540 p = xdr_inline_decode(xdr, entry->len);
7541 if (unlikely(!p))
7542 goto out_overflow;
7543 entry->name = (const char *) p;
7544
7545 /*
7546 * In case the server doesn't return an inode number,
7547 * we fake one here. (We don't use inode number 0,
7548 * since glibc seems to choke on it...)
7549 */
7550 entry->ino = 1;
7551 entry->fattr->valid = 0;
7552
7553 if (decode_attr_bitmap(xdr, bitmap) < 0)
7554 goto out_overflow;
7555
7556 if (decode_attr_length(xdr, &len, &savep) < 0)
7557 goto out_overflow;
7558
7559 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7560 NULL, entry->label, entry->server) < 0)
7561 goto out_overflow;
7562 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7563 entry->ino = entry->fattr->mounted_on_fileid;
7564 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7565 entry->ino = entry->fattr->fileid;
7566
7567 entry->d_type = DT_UNKNOWN;
7568 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7569 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7570
7571 entry->prev_cookie = entry->cookie;
7572 entry->cookie = new_cookie;
7573
7574 return 0;
7575
7576out_overflow:
7577 print_overflow_msg(__func__, xdr);
7578 return -EAGAIN;
7579}
7580
7581/*
7582 * We need to translate between nfs status return values and
7583 * the local errno values which may not be the same.
7584 */
7585static struct {
7586 int stat;
7587 int errno;
7588} nfs_errtbl[] = {
7589 { NFS4_OK, 0 },
7590 { NFS4ERR_PERM, -EPERM },
7591 { NFS4ERR_NOENT, -ENOENT },
7592 { NFS4ERR_IO, -errno_NFSERR_IO},
7593 { NFS4ERR_NXIO, -ENXIO },
7594 { NFS4ERR_ACCESS, -EACCES },
7595 { NFS4ERR_EXIST, -EEXIST },
7596 { NFS4ERR_XDEV, -EXDEV },
7597 { NFS4ERR_NOTDIR, -ENOTDIR },
7598 { NFS4ERR_ISDIR, -EISDIR },
7599 { NFS4ERR_INVAL, -EINVAL },
7600 { NFS4ERR_FBIG, -EFBIG },
7601 { NFS4ERR_NOSPC, -ENOSPC },
7602 { NFS4ERR_ROFS, -EROFS },
7603 { NFS4ERR_MLINK, -EMLINK },
7604 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7605 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7606 { NFS4ERR_DQUOT, -EDQUOT },
7607 { NFS4ERR_STALE, -ESTALE },
7608 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7609 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7610 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7611 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7612 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7613 { NFS4ERR_BADTYPE, -EBADTYPE },
7614 { NFS4ERR_LOCKED, -EAGAIN },
7615 { NFS4ERR_SYMLINK, -ELOOP },
7616 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7617 { NFS4ERR_DEADLOCK, -EDEADLK },
7618 { -1, -EIO }
7619};
7620
7621/*
7622 * Convert an NFS error code to a local one.
7623 * This one is used jointly by NFSv2 and NFSv3.
7624 */
7625static int
7626nfs4_stat_to_errno(int stat)
7627{
7628 int i;
7629 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7630 if (nfs_errtbl[i].stat == stat)
7631 return nfs_errtbl[i].errno;
7632 }
7633 if (stat <= 10000 || stat > 10100) {
7634 /* The server is looney tunes. */
7635 return -EREMOTEIO;
7636 }
7637 /* If we cannot translate the error, the recovery routines should
7638 * handle it.
7639 * Note: remaining NFSv4 error codes have values > 10000, so should
7640 * not conflict with native Linux error codes.
7641 */
7642 return -stat;
7643}
7644
7645#ifdef CONFIG_NFS_V4_2
7646#include "nfs42xdr.c"
7647#endif /* CONFIG_NFS_V4_2 */
7648
7649#define PROC(proc, argtype, restype) \
7650[NFSPROC4_CLNT_##proc] = { \
7651 .p_proc = NFSPROC4_COMPOUND, \
7652 .p_encode = nfs4_xdr_##argtype, \
7653 .p_decode = nfs4_xdr_##restype, \
7654 .p_arglen = NFS4_##argtype##_sz, \
7655 .p_replen = NFS4_##restype##_sz, \
7656 .p_statidx = NFSPROC4_CLNT_##proc, \
7657 .p_name = #proc, \
7658}
7659
7660#define STUB(proc) \
7661[NFSPROC4_CLNT_##proc] = { \
7662 .p_name = #proc, \
7663}
7664
7665#if defined(CONFIG_NFS_V4_1)
7666#define PROC41(proc, argtype, restype) \
7667 PROC(proc, argtype, restype)
7668#else
7669#define PROC41(proc, argtype, restype) \
7670 STUB(proc)
7671#endif
7672
7673#if defined(CONFIG_NFS_V4_2)
7674#define PROC42(proc, argtype, restype) \
7675 PROC(proc, argtype, restype)
7676#else
7677#define PROC42(proc, argtype, restype) \
7678 STUB(proc)
7679#endif
7680
7681const struct rpc_procinfo nfs4_procedures[] = {
7682 PROC(READ, enc_read, dec_read),
7683 PROC(WRITE, enc_write, dec_write),
7684 PROC(COMMIT, enc_commit, dec_commit),
7685 PROC(OPEN, enc_open, dec_open),
7686 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7687 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7688 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7689 PROC(CLOSE, enc_close, dec_close),
7690 PROC(SETATTR, enc_setattr, dec_setattr),
7691 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7692 PROC(RENEW, enc_renew, dec_renew),
7693 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7694 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7695 PROC(LOCK, enc_lock, dec_lock),
7696 PROC(LOCKT, enc_lockt, dec_lockt),
7697 PROC(LOCKU, enc_locku, dec_locku),
7698 PROC(ACCESS, enc_access, dec_access),
7699 PROC(GETATTR, enc_getattr, dec_getattr),
7700 PROC(LOOKUP, enc_lookup, dec_lookup),
7701 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7702 PROC(REMOVE, enc_remove, dec_remove),
7703 PROC(RENAME, enc_rename, dec_rename),
7704 PROC(LINK, enc_link, dec_link),
7705 PROC(SYMLINK, enc_symlink, dec_symlink),
7706 PROC(CREATE, enc_create, dec_create),
7707 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7708 PROC(STATFS, enc_statfs, dec_statfs),
7709 PROC(READLINK, enc_readlink, dec_readlink),
7710 PROC(READDIR, enc_readdir, dec_readdir),
7711 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7712 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7713 PROC(GETACL, enc_getacl, dec_getacl),
7714 PROC(SETACL, enc_setacl, dec_setacl),
7715 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7716 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7717 PROC(SECINFO, enc_secinfo, dec_secinfo),
7718 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7719 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7720 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7721 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7722 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7723 PROC41(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7724 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7725 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7726 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7727 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7728 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7729 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7730 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7731 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7732 STUB(GETDEVICELIST),
7733 PROC41(BIND_CONN_TO_SESSION,
7734 enc_bind_conn_to_session, dec_bind_conn_to_session),
7735 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7736 PROC42(SEEK, enc_seek, dec_seek),
7737 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7738 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7739 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7740 PROC42(CLONE, enc_clone, dec_clone),
7741 PROC42(COPY, enc_copy, dec_copy),
7742 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7743};
7744
7745static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7746const struct rpc_version nfs_version4 = {
7747 .number = 4,
7748 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7749 .procs = nfs4_procedures,
7750 .counts = nfs_version4_counts,
7751};
7752
7753/*
7754 * Local variables:
7755 * c-basic-offset: 8
7756 * End:
7757 */
1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55
56#include "nfs4_fs.h"
57#include "nfs4trace.h"
58#include "internal.h"
59#include "nfs4idmap.h"
60#include "nfs4session.h"
61#include "pnfs.h"
62#include "netns.h"
63
64#define NFSDBG_FACILITY NFSDBG_XDR
65
66/* Mapping from NFS error code to "errno" error code. */
67#define errno_NFSERR_IO EIO
68
69struct compound_hdr;
70static int nfs4_stat_to_errno(int);
71static void encode_layoutget(struct xdr_stream *xdr,
72 const struct nfs4_layoutget_args *args,
73 struct compound_hdr *hdr);
74static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
75 struct nfs4_layoutget_res *res);
76
77/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
78#ifdef DEBUG
79#define NFS4_MAXTAGLEN 20
80#else
81#define NFS4_MAXTAGLEN 0
82#endif
83
84/* lock,open owner id:
85 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
86 */
87#define pagepad_maxsz (1)
88#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
89#define lock_owner_id_maxsz (1 + 1 + 4)
90#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
91#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
92#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
93#define op_encode_hdr_maxsz (1)
94#define op_decode_hdr_maxsz (2)
95#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
96#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
97#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
98#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
99#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
100 (NFS4_FHSIZE >> 2))
101#define decode_putfh_maxsz (op_decode_hdr_maxsz)
102#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
103#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
104#define encode_getfh_maxsz (op_encode_hdr_maxsz)
105#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
106 ((3+NFS4_FHSIZE) >> 2))
107#define nfs4_fattr_bitmap_maxsz 4
108#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
109#define nfstime4_maxsz (3)
110#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
111#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
112#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
113#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
114#ifdef CONFIG_NFS_V4_SECURITY_LABEL
115/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
116#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
117#else
118#define nfs4_label_maxsz 0
119#endif
120/* We support only one layout type per file system */
121#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
122/* This is based on getfattr, which uses the most attributes: */
123#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
124 3*nfstime4_maxsz + \
125 nfs4_owner_maxsz + \
126 nfs4_group_maxsz + nfs4_label_maxsz + \
127 decode_mdsthreshold_maxsz))
128#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
129 nfs4_fattr_value_maxsz)
130#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
131#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
132 1 + 2 + 1 + \
133 nfs4_owner_maxsz + \
134 nfs4_group_maxsz + \
135 nfs4_label_maxsz + \
136 1 + nfstime4_maxsz + \
137 1 + nfstime4_maxsz)
138#define encode_savefh_maxsz (op_encode_hdr_maxsz)
139#define decode_savefh_maxsz (op_decode_hdr_maxsz)
140#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
141#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
142#define encode_fsinfo_maxsz (encode_getattr_maxsz)
143/* The 5 accounts for the PNFS attributes, and assumes that at most three
144 * layout types will be returned.
145 */
146#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
147 nfs4_fattr_bitmap_maxsz + 1 + \
148 1 /* lease time */ + \
149 2 /* max filesize */ + \
150 2 /* max read */ + \
151 2 /* max write */ + \
152 nfstime4_maxsz /* time delta */ + \
153 5 /* fs layout types */ + \
154 1 /* layout blksize */ + \
155 1 /* clone blksize */ + \
156 1 /* change attr type */ + \
157 1 /* xattr support */)
158#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
159#define decode_renew_maxsz (op_decode_hdr_maxsz)
160#define encode_setclientid_maxsz \
161 (op_encode_hdr_maxsz + \
162 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
163 /* client name */ \
164 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
165 1 /* sc_prog */ + \
166 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
167 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
168 1) /* sc_cb_ident */
169#define decode_setclientid_maxsz \
170 (op_decode_hdr_maxsz + \
171 2 /* clientid */ + \
172 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
173 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
174 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
175#define encode_setclientid_confirm_maxsz \
176 (op_encode_hdr_maxsz + \
177 3 + (NFS4_VERIFIER_SIZE >> 2))
178#define decode_setclientid_confirm_maxsz \
179 (op_decode_hdr_maxsz)
180#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
181#define decode_lookup_maxsz (op_decode_hdr_maxsz)
182#define encode_lookupp_maxsz (op_encode_hdr_maxsz)
183#define decode_lookupp_maxsz (op_decode_hdr_maxsz)
184#define encode_share_access_maxsz \
185 (2)
186#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
187#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
188#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
189#define encode_open_maxsz (op_encode_hdr_maxsz + \
190 2 + encode_share_access_maxsz + 2 + \
191 open_owner_id_maxsz + \
192 encode_opentype_maxsz + \
193 encode_claim_null_maxsz)
194#define decode_space_limit_maxsz (3)
195#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
196#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
197 decode_space_limit_maxsz + \
198 decode_ace_maxsz)
199#define decode_change_info_maxsz (5)
200#define decode_open_maxsz (op_decode_hdr_maxsz + \
201 decode_stateid_maxsz + \
202 decode_change_info_maxsz + 1 + \
203 nfs4_fattr_bitmap_maxsz + \
204 decode_delegation_maxsz)
205#define encode_open_confirm_maxsz \
206 (op_encode_hdr_maxsz + \
207 encode_stateid_maxsz + 1)
208#define decode_open_confirm_maxsz \
209 (op_decode_hdr_maxsz + \
210 decode_stateid_maxsz)
211#define encode_open_downgrade_maxsz \
212 (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 1 + \
214 encode_share_access_maxsz)
215#define decode_open_downgrade_maxsz \
216 (op_decode_hdr_maxsz + \
217 decode_stateid_maxsz)
218#define encode_close_maxsz (op_encode_hdr_maxsz + \
219 1 + encode_stateid_maxsz)
220#define decode_close_maxsz (op_decode_hdr_maxsz + \
221 decode_stateid_maxsz)
222#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
223 encode_stateid_maxsz + \
224 encode_attrs_maxsz)
225#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
226 nfs4_fattr_bitmap_maxsz)
227#define encode_read_maxsz (op_encode_hdr_maxsz + \
228 encode_stateid_maxsz + 3)
229#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz)
230#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
231 2 + encode_verifier_maxsz + 5 + \
232 nfs4_label_maxsz)
233#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
234 decode_verifier_maxsz + pagepad_maxsz)
235#define encode_readlink_maxsz (op_encode_hdr_maxsz)
236#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz)
237#define encode_write_maxsz (op_encode_hdr_maxsz + \
238 encode_stateid_maxsz + 4)
239#define decode_write_maxsz (op_decode_hdr_maxsz + \
240 2 + decode_verifier_maxsz)
241#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
242#define decode_commit_maxsz (op_decode_hdr_maxsz + \
243 decode_verifier_maxsz)
244#define encode_remove_maxsz (op_encode_hdr_maxsz + \
245 nfs4_name_maxsz)
246#define decode_remove_maxsz (op_decode_hdr_maxsz + \
247 decode_change_info_maxsz)
248#define encode_rename_maxsz (op_encode_hdr_maxsz + \
249 2 * nfs4_name_maxsz)
250#define decode_rename_maxsz (op_decode_hdr_maxsz + \
251 decode_change_info_maxsz + \
252 decode_change_info_maxsz)
253#define encode_link_maxsz (op_encode_hdr_maxsz + \
254 nfs4_name_maxsz)
255#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
256#define encode_lockowner_maxsz (7)
257#define encode_lock_maxsz (op_encode_hdr_maxsz + \
258 7 + \
259 1 + encode_stateid_maxsz + 1 + \
260 encode_lockowner_maxsz)
261#define decode_lock_denied_maxsz \
262 (8 + decode_lockowner_maxsz)
263#define decode_lock_maxsz (op_decode_hdr_maxsz + \
264 decode_lock_denied_maxsz)
265#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
266 encode_lockowner_maxsz)
267#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
268 decode_lock_denied_maxsz)
269#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
270 encode_stateid_maxsz + \
271 4)
272#define decode_locku_maxsz (op_decode_hdr_maxsz + \
273 decode_stateid_maxsz)
274#define encode_release_lockowner_maxsz \
275 (op_encode_hdr_maxsz + \
276 encode_lockowner_maxsz)
277#define decode_release_lockowner_maxsz \
278 (op_decode_hdr_maxsz)
279#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
280#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
281#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
282 1 + nfs4_name_maxsz + \
283 1 + \
284 nfs4_fattr_maxsz)
285#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
286#define encode_create_maxsz (op_encode_hdr_maxsz + \
287 1 + 2 + nfs4_name_maxsz + \
288 encode_attrs_maxsz)
289#define decode_create_maxsz (op_decode_hdr_maxsz + \
290 decode_change_info_maxsz + \
291 nfs4_fattr_bitmap_maxsz)
292#define encode_statfs_maxsz (encode_getattr_maxsz)
293#define decode_statfs_maxsz (decode_getattr_maxsz)
294#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
295#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
296#define encode_getacl_maxsz (encode_getattr_maxsz)
297#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
298 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz)
299#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
300 encode_stateid_maxsz + 3)
301#define decode_setacl_maxsz (decode_setattr_maxsz)
302#define encode_fs_locations_maxsz \
303 (encode_getattr_maxsz)
304#define decode_fs_locations_maxsz \
305 (pagepad_maxsz)
306#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
307#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
308
309#if defined(CONFIG_NFS_V4_1)
310#define NFS4_MAX_MACHINE_NAME_LEN (64)
311#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
312 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
313
314#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
315 encode_verifier_maxsz + \
316 1 /* co_ownerid.len */ + \
317 /* eia_clientowner */ \
318 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
319 1 /* flags */ + \
320 1 /* spa_how */ + \
321 /* max is SP4_MACH_CRED (for now) */ + \
322 1 + NFS4_OP_MAP_NUM_WORDS + \
323 1 + NFS4_OP_MAP_NUM_WORDS + \
324 1 /* implementation id array of size 1 */ + \
325 1 /* nii_domain */ + \
326 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
327 1 /* nii_name */ + \
328 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
329 3 /* nii_date */)
330#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
331 2 /* eir_clientid */ + \
332 1 /* eir_sequenceid */ + \
333 1 /* eir_flags */ + \
334 1 /* spr_how */ + \
335 /* max is SP4_MACH_CRED (for now) */ + \
336 1 + NFS4_OP_MAP_NUM_WORDS + \
337 1 + NFS4_OP_MAP_NUM_WORDS + \
338 2 /* eir_server_owner.so_minor_id */ + \
339 /* eir_server_owner.so_major_id<> */ \
340 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
341 /* eir_server_scope<> */ \
342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
343 1 /* eir_server_impl_id array length */ + \
344 1 /* nii_domain */ + \
345 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
346 1 /* nii_name */ + \
347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
348 3 /* nii_date */)
349#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
350#define decode_channel_attrs_maxsz (6 + \
351 1 /* ca_rdma_ird.len */ + \
352 1 /* ca_rdma_ird */)
353#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
354 2 /* csa_clientid */ + \
355 1 /* csa_sequence */ + \
356 1 /* csa_flags */ + \
357 encode_channel_attrs_maxsz + \
358 encode_channel_attrs_maxsz + \
359 1 /* csa_cb_program */ + \
360 1 /* csa_sec_parms.len (1) */ + \
361 1 /* cb_secflavor (AUTH_SYS) */ + \
362 1 /* stamp */ + \
363 1 /* machinename.len */ + \
364 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
365 1 /* uid */ + \
366 1 /* gid */ + \
367 1 /* gids.len (0) */)
368#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
370 1 /* csr_sequence */ + \
371 1 /* csr_flags */ + \
372 decode_channel_attrs_maxsz + \
373 decode_channel_attrs_maxsz)
374#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
375 /* bctsa_sessid */ \
376 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
377 1 /* bctsa_dir */ + \
378 1 /* bctsa_use_conn_in_rdma_mode */)
379#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
380 /* bctsr_sessid */ \
381 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
382 1 /* bctsr_dir */ + \
383 1 /* bctsr_use_conn_in_rdma_mode */)
384#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
385#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
386#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
387#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
388#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
389 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
390#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
392#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
393#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
394#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
395 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
396 1 /* layout type */ + \
397 1 /* maxcount */ + \
398 1 /* bitmap size */ + \
399 1 /* notification bitmap length */ + \
400 1 /* notification bitmap, word 0 */)
401#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
402 1 /* layout type */ + \
403 1 /* opaque devaddr4 length */ + \
404 /* devaddr4 payload is read into page */ \
405 1 /* notification bitmap length */ + \
406 1 /* notification bitmap, word 0 */ + \
407 pagepad_maxsz /* possible XDR padding */)
408#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
409 encode_stateid_maxsz)
410#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
411 decode_stateid_maxsz + \
412 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \
413 pagepad_maxsz)
414#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
415 2 /* offset */ + \
416 2 /* length */ + \
417 1 /* reclaim */ + \
418 encode_stateid_maxsz + \
419 1 /* new offset (true) */ + \
420 2 /* last byte written */ + \
421 1 /* nt_timechanged (false) */ + \
422 1 /* layoutupdate4 layout type */ + \
423 1 /* layoutupdate4 opaqueue len */)
424 /* the actual content of layoutupdate4 should
425 be allocated by drivers and spliced in
426 using xdr_write_pages */
427#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
428#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
429 encode_stateid_maxsz + \
430 1 + \
431 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
432#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
433 1 + decode_stateid_maxsz)
434#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
435#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
436#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
437 XDR_QUADLEN(NFS4_STATEID_SIZE))
438#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
439#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
440 XDR_QUADLEN(NFS4_STATEID_SIZE))
441#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
442#else /* CONFIG_NFS_V4_1 */
443#define encode_sequence_maxsz 0
444#define decode_sequence_maxsz 0
445#define encode_layoutreturn_maxsz 0
446#define decode_layoutreturn_maxsz 0
447#define encode_layoutget_maxsz 0
448#define decode_layoutget_maxsz 0
449#endif /* CONFIG_NFS_V4_1 */
450
451#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
452#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
453#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
454 encode_sequence_maxsz + \
455 encode_putfh_maxsz + \
456 encode_read_maxsz)
457#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
458 decode_sequence_maxsz + \
459 decode_putfh_maxsz + \
460 decode_read_maxsz)
461#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
462 encode_sequence_maxsz + \
463 encode_putfh_maxsz + \
464 encode_readlink_maxsz)
465#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
466 decode_sequence_maxsz + \
467 decode_putfh_maxsz + \
468 decode_readlink_maxsz)
469#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
470 encode_sequence_maxsz + \
471 encode_putfh_maxsz + \
472 encode_readdir_maxsz)
473#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
474 decode_sequence_maxsz + \
475 decode_putfh_maxsz + \
476 decode_readdir_maxsz)
477#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_write_maxsz + \
481 encode_getattr_maxsz)
482#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
483 decode_sequence_maxsz + \
484 decode_putfh_maxsz + \
485 decode_write_maxsz + \
486 decode_getattr_maxsz)
487#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
488 encode_sequence_maxsz + \
489 encode_putfh_maxsz + \
490 encode_commit_maxsz)
491#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_commit_maxsz)
495#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_open_maxsz + \
499 encode_access_maxsz + \
500 encode_getfh_maxsz + \
501 encode_getattr_maxsz + \
502 encode_layoutget_maxsz)
503#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_open_maxsz + \
507 decode_access_maxsz + \
508 decode_getfh_maxsz + \
509 decode_getattr_maxsz + \
510 decode_layoutget_maxsz)
511#define NFS4_enc_open_confirm_sz \
512 (compound_encode_hdr_maxsz + \
513 encode_putfh_maxsz + \
514 encode_open_confirm_maxsz)
515#define NFS4_dec_open_confirm_sz \
516 (compound_decode_hdr_maxsz + \
517 decode_putfh_maxsz + \
518 decode_open_confirm_maxsz)
519#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_open_maxsz + \
523 encode_access_maxsz + \
524 encode_getattr_maxsz + \
525 encode_layoutget_maxsz)
526#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_open_maxsz + \
530 decode_access_maxsz + \
531 decode_getattr_maxsz + \
532 decode_layoutget_maxsz)
533#define NFS4_enc_open_downgrade_sz \
534 (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_layoutreturn_maxsz + \
538 encode_open_downgrade_maxsz)
539#define NFS4_dec_open_downgrade_sz \
540 (compound_decode_hdr_maxsz + \
541 decode_sequence_maxsz + \
542 decode_putfh_maxsz + \
543 decode_layoutreturn_maxsz + \
544 decode_open_downgrade_maxsz)
545#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
546 encode_sequence_maxsz + \
547 encode_putfh_maxsz + \
548 encode_layoutreturn_maxsz + \
549 encode_close_maxsz + \
550 encode_getattr_maxsz)
551#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
552 decode_sequence_maxsz + \
553 decode_putfh_maxsz + \
554 decode_layoutreturn_maxsz + \
555 decode_close_maxsz + \
556 decode_getattr_maxsz)
557#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_setattr_maxsz + \
561 encode_getattr_maxsz)
562#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
563 decode_sequence_maxsz + \
564 decode_putfh_maxsz + \
565 decode_setattr_maxsz + \
566 decode_getattr_maxsz)
567#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_fsinfo_maxsz)
571#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
574 decode_fsinfo_maxsz)
575#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
576 encode_renew_maxsz)
577#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
578 decode_renew_maxsz)
579#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
580 encode_setclientid_maxsz)
581#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
582 decode_setclientid_maxsz)
583#define NFS4_enc_setclientid_confirm_sz \
584 (compound_encode_hdr_maxsz + \
585 encode_setclientid_confirm_maxsz)
586#define NFS4_dec_setclientid_confirm_sz \
587 (compound_decode_hdr_maxsz + \
588 decode_setclientid_confirm_maxsz)
589#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_lock_maxsz)
593#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
594 decode_sequence_maxsz + \
595 decode_putfh_maxsz + \
596 decode_lock_maxsz)
597#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putfh_maxsz + \
600 encode_lockt_maxsz)
601#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
602 decode_sequence_maxsz + \
603 decode_putfh_maxsz + \
604 decode_lockt_maxsz)
605#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
606 encode_sequence_maxsz + \
607 encode_putfh_maxsz + \
608 encode_locku_maxsz)
609#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
610 decode_sequence_maxsz + \
611 decode_putfh_maxsz + \
612 decode_locku_maxsz)
613#define NFS4_enc_release_lockowner_sz \
614 (compound_encode_hdr_maxsz + \
615 encode_lockowner_maxsz)
616#define NFS4_dec_release_lockowner_sz \
617 (compound_decode_hdr_maxsz + \
618 decode_lockowner_maxsz)
619#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_access_maxsz + \
623 encode_getattr_maxsz)
624#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putfh_maxsz + \
627 decode_access_maxsz + \
628 decode_getattr_maxsz)
629#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_getattr_maxsz + \
633 encode_renew_maxsz)
634#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
635 decode_sequence_maxsz + \
636 decode_putfh_maxsz + \
637 decode_getattr_maxsz + \
638 decode_renew_maxsz)
639#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
640 encode_sequence_maxsz + \
641 encode_putfh_maxsz + \
642 encode_lookup_maxsz + \
643 encode_getattr_maxsz + \
644 encode_getfh_maxsz)
645#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
646 decode_sequence_maxsz + \
647 decode_putfh_maxsz + \
648 decode_lookup_maxsz + \
649 decode_getattr_maxsz + \
650 decode_getfh_maxsz)
651#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
652 encode_sequence_maxsz + \
653 encode_putfh_maxsz + \
654 encode_lookupp_maxsz + \
655 encode_getattr_maxsz + \
656 encode_getfh_maxsz)
657#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_lookupp_maxsz + \
661 decode_getattr_maxsz + \
662 decode_getfh_maxsz)
663#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
664 encode_sequence_maxsz + \
665 encode_putrootfh_maxsz + \
666 encode_getattr_maxsz + \
667 encode_getfh_maxsz)
668#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putrootfh_maxsz + \
671 decode_getattr_maxsz + \
672 decode_getfh_maxsz)
673#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
674 encode_sequence_maxsz + \
675 encode_putfh_maxsz + \
676 encode_remove_maxsz)
677#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
678 decode_sequence_maxsz + \
679 decode_putfh_maxsz + \
680 decode_remove_maxsz)
681#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_savefh_maxsz + \
685 encode_putfh_maxsz + \
686 encode_rename_maxsz)
687#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
688 decode_sequence_maxsz + \
689 decode_putfh_maxsz + \
690 decode_savefh_maxsz + \
691 decode_putfh_maxsz + \
692 decode_rename_maxsz)
693#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
694 encode_sequence_maxsz + \
695 encode_putfh_maxsz + \
696 encode_savefh_maxsz + \
697 encode_putfh_maxsz + \
698 encode_link_maxsz + \
699 encode_restorefh_maxsz + \
700 encode_getattr_maxsz)
701#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_savefh_maxsz + \
705 decode_putfh_maxsz + \
706 decode_link_maxsz + \
707 decode_restorefh_maxsz + \
708 decode_getattr_maxsz)
709#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
710 encode_sequence_maxsz + \
711 encode_putfh_maxsz + \
712 encode_symlink_maxsz + \
713 encode_getattr_maxsz + \
714 encode_getfh_maxsz)
715#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
716 decode_sequence_maxsz + \
717 decode_putfh_maxsz + \
718 decode_symlink_maxsz + \
719 decode_getattr_maxsz + \
720 decode_getfh_maxsz)
721#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_create_maxsz + \
725 encode_getfh_maxsz + \
726 encode_getattr_maxsz)
727#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_create_maxsz + \
731 decode_getfh_maxsz + \
732 decode_getattr_maxsz)
733#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
734 encode_sequence_maxsz + \
735 encode_putfh_maxsz + \
736 encode_getattr_maxsz)
737#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_getattr_maxsz)
741#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
742 encode_sequence_maxsz + \
743 encode_putfh_maxsz + \
744 encode_statfs_maxsz)
745#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
746 decode_sequence_maxsz + \
747 decode_putfh_maxsz + \
748 decode_statfs_maxsz)
749#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
750 encode_sequence_maxsz + \
751 encode_putfh_maxsz + \
752 encode_getattr_maxsz)
753#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
754 decode_sequence_maxsz + \
755 decode_putfh_maxsz + \
756 decode_getattr_maxsz)
757#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz + \
759 encode_putfh_maxsz + \
760 encode_layoutreturn_maxsz + \
761 encode_delegreturn_maxsz + \
762 encode_getattr_maxsz)
763#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
764 decode_sequence_maxsz + \
765 decode_putfh_maxsz + \
766 decode_layoutreturn_maxsz + \
767 decode_delegreturn_maxsz + \
768 decode_getattr_maxsz)
769#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
770 encode_sequence_maxsz + \
771 encode_putfh_maxsz + \
772 encode_getacl_maxsz)
773#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
774 decode_sequence_maxsz + \
775 decode_putfh_maxsz + \
776 decode_getacl_maxsz)
777#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
778 encode_sequence_maxsz + \
779 encode_putfh_maxsz + \
780 encode_setacl_maxsz)
781#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz + \
783 decode_putfh_maxsz + \
784 decode_setacl_maxsz)
785#define NFS4_enc_fs_locations_sz \
786 (compound_encode_hdr_maxsz + \
787 encode_sequence_maxsz + \
788 encode_putfh_maxsz + \
789 encode_lookup_maxsz + \
790 encode_fs_locations_maxsz + \
791 encode_renew_maxsz)
792#define NFS4_dec_fs_locations_sz \
793 (compound_decode_hdr_maxsz + \
794 decode_sequence_maxsz + \
795 decode_putfh_maxsz + \
796 decode_lookup_maxsz + \
797 decode_fs_locations_maxsz + \
798 decode_renew_maxsz)
799#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
800 encode_sequence_maxsz + \
801 encode_putfh_maxsz + \
802 encode_secinfo_maxsz)
803#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
804 decode_sequence_maxsz + \
805 decode_putfh_maxsz + \
806 decode_secinfo_maxsz)
807#define NFS4_enc_fsid_present_sz \
808 (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_putfh_maxsz + \
811 encode_getfh_maxsz + \
812 encode_renew_maxsz)
813#define NFS4_dec_fsid_present_sz \
814 (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putfh_maxsz + \
817 decode_getfh_maxsz + \
818 decode_renew_maxsz)
819#if defined(CONFIG_NFS_V4_1)
820#define NFS4_enc_bind_conn_to_session_sz \
821 (compound_encode_hdr_maxsz + \
822 encode_bind_conn_to_session_maxsz)
823#define NFS4_dec_bind_conn_to_session_sz \
824 (compound_decode_hdr_maxsz + \
825 decode_bind_conn_to_session_maxsz)
826#define NFS4_enc_exchange_id_sz \
827 (compound_encode_hdr_maxsz + \
828 encode_exchange_id_maxsz)
829#define NFS4_dec_exchange_id_sz \
830 (compound_decode_hdr_maxsz + \
831 decode_exchange_id_maxsz)
832#define NFS4_enc_create_session_sz \
833 (compound_encode_hdr_maxsz + \
834 encode_create_session_maxsz)
835#define NFS4_dec_create_session_sz \
836 (compound_decode_hdr_maxsz + \
837 decode_create_session_maxsz)
838#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
839 encode_destroy_session_maxsz)
840#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
841 decode_destroy_session_maxsz)
842#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
843 encode_destroy_clientid_maxsz)
844#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
845 decode_destroy_clientid_maxsz)
846#define NFS4_enc_sequence_sz \
847 (compound_decode_hdr_maxsz + \
848 encode_sequence_maxsz)
849#define NFS4_dec_sequence_sz \
850 (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz)
852#endif
853#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
854 encode_sequence_maxsz + \
855 encode_putrootfh_maxsz + \
856 encode_fsinfo_maxsz)
857#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_putrootfh_maxsz + \
860 decode_fsinfo_maxsz)
861#if defined(CONFIG_NFS_V4_1)
862#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
863 encode_sequence_maxsz + \
864 encode_reclaim_complete_maxsz)
865#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
866 decode_sequence_maxsz + \
867 decode_reclaim_complete_maxsz)
868#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
869 encode_sequence_maxsz +\
870 encode_getdeviceinfo_maxsz)
871#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
872 decode_sequence_maxsz + \
873 decode_getdeviceinfo_maxsz)
874#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
875 encode_sequence_maxsz + \
876 encode_putfh_maxsz + \
877 encode_layoutget_maxsz)
878#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
879 decode_sequence_maxsz + \
880 decode_putfh_maxsz + \
881 decode_layoutget_maxsz)
882#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
883 encode_sequence_maxsz +\
884 encode_putfh_maxsz + \
885 encode_layoutcommit_maxsz + \
886 encode_getattr_maxsz)
887#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
888 decode_sequence_maxsz + \
889 decode_putfh_maxsz + \
890 decode_layoutcommit_maxsz + \
891 decode_getattr_maxsz)
892#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
893 encode_sequence_maxsz + \
894 encode_putfh_maxsz + \
895 encode_layoutreturn_maxsz)
896#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
897 decode_sequence_maxsz + \
898 decode_putfh_maxsz + \
899 decode_layoutreturn_maxsz)
900#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
901 encode_sequence_maxsz + \
902 encode_putrootfh_maxsz +\
903 encode_secinfo_no_name_maxsz)
904#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
905 decode_sequence_maxsz + \
906 decode_putrootfh_maxsz + \
907 decode_secinfo_no_name_maxsz)
908#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
909 encode_sequence_maxsz + \
910 encode_test_stateid_maxsz)
911#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
912 decode_sequence_maxsz + \
913 decode_test_stateid_maxsz)
914#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
915 encode_sequence_maxsz + \
916 encode_free_stateid_maxsz)
917#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
918 decode_sequence_maxsz + \
919 decode_free_stateid_maxsz)
920
921const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
922 compound_encode_hdr_maxsz +
923 encode_sequence_maxsz +
924 encode_putfh_maxsz +
925 encode_getattr_maxsz) *
926 XDR_UNIT);
927
928const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
929 compound_decode_hdr_maxsz +
930 decode_sequence_maxsz +
931 decode_putfh_maxsz) *
932 XDR_UNIT);
933
934const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
935 compound_decode_hdr_maxsz +
936 decode_sequence_maxsz) *
937 XDR_UNIT);
938EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
939#endif /* CONFIG_NFS_V4_1 */
940
941static const umode_t nfs_type2fmt[] = {
942 [NF4BAD] = 0,
943 [NF4REG] = S_IFREG,
944 [NF4DIR] = S_IFDIR,
945 [NF4BLK] = S_IFBLK,
946 [NF4CHR] = S_IFCHR,
947 [NF4LNK] = S_IFLNK,
948 [NF4SOCK] = S_IFSOCK,
949 [NF4FIFO] = S_IFIFO,
950 [NF4ATTRDIR] = 0,
951 [NF4NAMEDATTR] = 0,
952};
953
954struct compound_hdr {
955 int32_t status;
956 uint32_t nops;
957 __be32 * nops_p;
958 uint32_t taglen;
959 char * tag;
960 uint32_t replen; /* expected reply words */
961 u32 minorversion;
962};
963
964static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
965{
966 __be32 *p = xdr_reserve_space(xdr, nbytes);
967 BUG_ON(!p);
968 return p;
969}
970
971static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
972{
973 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
974}
975
976static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
977{
978 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
979}
980
981static void encode_uint32(struct xdr_stream *xdr, u32 n)
982{
983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
984}
985
986static void encode_uint64(struct xdr_stream *xdr, u64 n)
987{
988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
989}
990
991static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
992 const __u32 *bitmap, size_t len)
993{
994 ssize_t ret;
995
996 /* Trim empty words */
997 while (len > 0 && bitmap[len-1] == 0)
998 len--;
999 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len);
1000 if (WARN_ON_ONCE(ret < 0))
1001 return ret;
1002 return len;
1003}
1004
1005static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask,
1006 __u32 *res, size_t len)
1007{
1008 size_t i;
1009 __u32 tmp;
1010
1011 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0))
1012 len--;
1013 for (i = len; i-- > 0;) {
1014 tmp = bitmap[i] & mask[i];
1015 res[i] = tmp;
1016 }
1017 return len;
1018}
1019
1020static void encode_nfs4_seqid(struct xdr_stream *xdr,
1021 const struct nfs_seqid *seqid)
1022{
1023 if (seqid != NULL)
1024 encode_uint32(xdr, seqid->sequence->counter);
1025 else
1026 encode_uint32(xdr, 0);
1027}
1028
1029static void encode_compound_hdr(struct xdr_stream *xdr,
1030 struct rpc_rqst *req,
1031 struct compound_hdr *hdr)
1032{
1033 __be32 *p;
1034
1035 /* initialize running count of expected bytes in reply.
1036 * NOTE: the replied tag SHOULD be the same is the one sent,
1037 * but this is not required as a MUST for the server to do so. */
1038 hdr->replen = 3 + hdr->taglen;
1039
1040 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
1041 encode_string(xdr, hdr->taglen, hdr->tag);
1042 p = reserve_space(xdr, 8);
1043 *p++ = cpu_to_be32(hdr->minorversion);
1044 hdr->nops_p = p;
1045 *p = cpu_to_be32(hdr->nops);
1046}
1047
1048static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
1049 uint32_t replen,
1050 struct compound_hdr *hdr)
1051{
1052 encode_uint32(xdr, op);
1053 hdr->nops++;
1054 hdr->replen += replen;
1055}
1056
1057static void encode_nops(struct compound_hdr *hdr)
1058{
1059 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
1060 *hdr->nops_p = htonl(hdr->nops);
1061}
1062
1063static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1064{
1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1066}
1067
1068static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1069{
1070 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1071}
1072
1073static __be32 *
1074xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t)
1075{
1076 p = xdr_encode_hyper(p, t->tv_sec);
1077 *p++ = cpu_to_be32(t->tv_nsec);
1078 return p;
1079}
1080
1081static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1082 const struct nfs4_label *label,
1083 const umode_t *umask,
1084 const struct nfs_server *server,
1085 const uint32_t attrmask[])
1086{
1087 char owner_name[IDMAP_NAMESZ];
1088 char owner_group[IDMAP_NAMESZ];
1089 int owner_namelen = 0;
1090 int owner_grouplen = 0;
1091 __be32 *p;
1092 uint32_t len = 0;
1093 uint32_t bmval[3] = { 0 };
1094
1095 /*
1096 * We reserve enough space to write the entire attribute buffer at once.
1097 */
1098 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) {
1099 bmval[0] |= FATTR4_WORD0_SIZE;
1100 len += 8;
1101 }
1102 if (iap->ia_valid & ATTR_MODE) {
1103 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) {
1104 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1105 len += 8;
1106 } else if (attrmask[1] & FATTR4_WORD1_MODE) {
1107 bmval[1] |= FATTR4_WORD1_MODE;
1108 len += 4;
1109 }
1110 }
1111 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) {
1112 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1113 if (owner_namelen < 0) {
1114 dprintk("nfs: couldn't resolve uid %d to string\n",
1115 from_kuid(&init_user_ns, iap->ia_uid));
1116 /* XXX */
1117 strcpy(owner_name, "nobody");
1118 owner_namelen = sizeof("nobody") - 1;
1119 /* goto out; */
1120 }
1121 bmval[1] |= FATTR4_WORD1_OWNER;
1122 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1123 }
1124 if ((iap->ia_valid & ATTR_GID) &&
1125 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) {
1126 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1127 if (owner_grouplen < 0) {
1128 dprintk("nfs: couldn't resolve gid %d to string\n",
1129 from_kgid(&init_user_ns, iap->ia_gid));
1130 strcpy(owner_group, "nobody");
1131 owner_grouplen = sizeof("nobody") - 1;
1132 /* goto out; */
1133 }
1134 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1135 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1136 }
1137 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1138 if (iap->ia_valid & ATTR_ATIME_SET) {
1139 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1140 len += 4 + (nfstime4_maxsz << 2);
1141 } else if (iap->ia_valid & ATTR_ATIME) {
1142 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1143 len += 4;
1144 }
1145 }
1146 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1147 if (iap->ia_valid & ATTR_MTIME_SET) {
1148 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1149 len += 4 + (nfstime4_maxsz << 2);
1150 } else if (iap->ia_valid & ATTR_MTIME) {
1151 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1152 len += 4;
1153 }
1154 }
1155
1156 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1157 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1158 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1159 }
1160
1161 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval));
1162 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len);
1163
1164 if (bmval[0] & FATTR4_WORD0_SIZE)
1165 p = xdr_encode_hyper(p, iap->ia_size);
1166 if (bmval[1] & FATTR4_WORD1_MODE)
1167 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1168 if (bmval[1] & FATTR4_WORD1_OWNER)
1169 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1171 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1172 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1173 if (iap->ia_valid & ATTR_ATIME_SET) {
1174 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1175 p = xdr_encode_nfstime4(p, &iap->ia_atime);
1176 } else
1177 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1178 }
1179 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1180 if (iap->ia_valid & ATTR_MTIME_SET) {
1181 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1182 p = xdr_encode_nfstime4(p, &iap->ia_mtime);
1183 } else
1184 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1185 }
1186 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1187 *p++ = cpu_to_be32(label->lfs);
1188 *p++ = cpu_to_be32(label->pi);
1189 *p++ = cpu_to_be32(label->len);
1190 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1191 }
1192 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1193 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1194 *p++ = cpu_to_be32(*umask);
1195 }
1196
1197/* out: */
1198}
1199
1200static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1201{
1202 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1203 encode_uint32(xdr, access);
1204}
1205
1206static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1207{
1208 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1209 encode_nfs4_seqid(xdr, arg->seqid);
1210 encode_nfs4_stateid(xdr, &arg->stateid);
1211}
1212
1213static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1214{
1215 __be32 *p;
1216
1217 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1218 p = reserve_space(xdr, 12);
1219 p = xdr_encode_hyper(p, args->offset);
1220 *p = cpu_to_be32(args->count);
1221}
1222
1223static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1224{
1225 __be32 *p;
1226
1227 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1228 encode_uint32(xdr, create->ftype);
1229
1230 switch (create->ftype) {
1231 case NF4LNK:
1232 p = reserve_space(xdr, 4);
1233 *p = cpu_to_be32(create->u.symlink.len);
1234 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1235 create->u.symlink.len);
1236 xdr->buf->flags |= XDRBUF_WRITE;
1237 break;
1238
1239 case NF4BLK: case NF4CHR:
1240 p = reserve_space(xdr, 8);
1241 *p++ = cpu_to_be32(create->u.device.specdata1);
1242 *p = cpu_to_be32(create->u.device.specdata2);
1243 break;
1244
1245 default:
1246 break;
1247 }
1248
1249 encode_string(xdr, create->name->len, create->name->name);
1250 encode_attrs(xdr, create->attrs, create->label, &create->umask,
1251 create->server, create->server->attr_bitmask);
1252}
1253
1254static void encode_getattr(struct xdr_stream *xdr,
1255 const __u32 *bitmap, const __u32 *mask, size_t len,
1256 struct compound_hdr *hdr)
1257{
1258 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz];
1259
1260 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1261 if (mask) {
1262 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap)))
1263 len = ARRAY_SIZE(masked_bitmap);
1264 len = mask_bitmap4(bitmap, mask, masked_bitmap, len);
1265 bitmap = masked_bitmap;
1266 }
1267 xdr_encode_bitmap4(xdr, bitmap, len);
1268}
1269
1270static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1271{
1272 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask,
1273 ARRAY_SIZE(nfs4_fattr_bitmap), hdr);
1274}
1275
1276static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1277 const u32 *open_bitmap,
1278 struct compound_hdr *hdr)
1279{
1280 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr);
1281}
1282
1283static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1284{
1285 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask,
1286 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr);
1287}
1288
1289static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1290{
1291 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask,
1292 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr);
1293}
1294
1295static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1296{
1297 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1298}
1299
1300static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1301{
1302 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1303 encode_string(xdr, name->len, name->name);
1304}
1305
1306static inline int nfs4_lock_type(struct file_lock *fl, int block)
1307{
1308 if (fl->fl_type == F_RDLCK)
1309 return block ? NFS4_READW_LT : NFS4_READ_LT;
1310 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1311}
1312
1313static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1314{
1315 if (fl->fl_end == OFFSET_MAX)
1316 return ~(uint64_t)0;
1317 return fl->fl_end - fl->fl_start + 1;
1318}
1319
1320static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1321{
1322 __be32 *p;
1323
1324 p = reserve_space(xdr, 32);
1325 p = xdr_encode_hyper(p, lowner->clientid);
1326 *p++ = cpu_to_be32(20);
1327 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1328 *p++ = cpu_to_be32(lowner->s_dev);
1329 xdr_encode_hyper(p, lowner->id);
1330}
1331
1332/*
1333 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1334 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1335 */
1336static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1337{
1338 __be32 *p;
1339
1340 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1341 p = reserve_space(xdr, 28);
1342 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1343 *p++ = cpu_to_be32(args->reclaim);
1344 p = xdr_encode_hyper(p, args->fl->fl_start);
1345 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1346 *p = cpu_to_be32(args->new_lock_owner);
1347 if (args->new_lock_owner){
1348 encode_nfs4_seqid(xdr, args->open_seqid);
1349 encode_nfs4_stateid(xdr, &args->open_stateid);
1350 encode_nfs4_seqid(xdr, args->lock_seqid);
1351 encode_lockowner(xdr, &args->lock_owner);
1352 }
1353 else {
1354 encode_nfs4_stateid(xdr, &args->lock_stateid);
1355 encode_nfs4_seqid(xdr, args->lock_seqid);
1356 }
1357}
1358
1359static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1360{
1361 __be32 *p;
1362
1363 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1364 p = reserve_space(xdr, 20);
1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1366 p = xdr_encode_hyper(p, args->fl->fl_start);
1367 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1368 encode_lockowner(xdr, &args->lock_owner);
1369}
1370
1371static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1372{
1373 __be32 *p;
1374
1375 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1376 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1377 encode_nfs4_seqid(xdr, args->seqid);
1378 encode_nfs4_stateid(xdr, &args->stateid);
1379 p = reserve_space(xdr, 16);
1380 p = xdr_encode_hyper(p, args->fl->fl_start);
1381 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1382}
1383
1384static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1385{
1386 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1387 encode_lockowner(xdr, lowner);
1388}
1389
1390static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1391{
1392 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1393 encode_string(xdr, name->len, name->name);
1394}
1395
1396static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr)
1397{
1398 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr);
1399}
1400
1401static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1402{
1403 __be32 *p;
1404
1405 p = reserve_space(xdr, 8);
1406 *p++ = cpu_to_be32(share_access);
1407 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1408}
1409
1410static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1411{
1412 __be32 *p;
1413 /*
1414 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1415 * owner 4 = 32
1416 */
1417 encode_nfs4_seqid(xdr, arg->seqid);
1418 encode_share_access(xdr, arg->share_access);
1419 p = reserve_space(xdr, 36);
1420 p = xdr_encode_hyper(p, arg->clientid);
1421 *p++ = cpu_to_be32(24);
1422 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1423 *p++ = cpu_to_be32(arg->server->s_dev);
1424 *p++ = cpu_to_be32(arg->id.uniquifier);
1425 xdr_encode_hyper(p, arg->id.create_time);
1426}
1427
1428static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1429{
1430 __be32 *p;
1431
1432 p = reserve_space(xdr, 4);
1433 switch(arg->createmode) {
1434 case NFS4_CREATE_UNCHECKED:
1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1436 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1437 arg->server, arg->server->attr_bitmask);
1438 break;
1439 case NFS4_CREATE_GUARDED:
1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1441 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1442 arg->server, arg->server->attr_bitmask);
1443 break;
1444 case NFS4_CREATE_EXCLUSIVE:
1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1446 encode_nfs4_verifier(xdr, &arg->u.verifier);
1447 break;
1448 case NFS4_CREATE_EXCLUSIVE4_1:
1449 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1450 encode_nfs4_verifier(xdr, &arg->u.verifier);
1451 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1452 arg->server, arg->server->exclcreat_bitmask);
1453 }
1454}
1455
1456static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1457{
1458 __be32 *p;
1459
1460 p = reserve_space(xdr, 4);
1461 switch (arg->open_flags & O_CREAT) {
1462 case 0:
1463 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1464 break;
1465 default:
1466 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1467 encode_createmode(xdr, arg);
1468 }
1469}
1470
1471static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1472{
1473 __be32 *p;
1474
1475 p = reserve_space(xdr, 4);
1476 switch (delegation_type) {
1477 case 0:
1478 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1479 break;
1480 case FMODE_READ:
1481 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1482 break;
1483 case FMODE_WRITE|FMODE_READ:
1484 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1485 break;
1486 default:
1487 BUG();
1488 }
1489}
1490
1491static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1492{
1493 __be32 *p;
1494
1495 p = reserve_space(xdr, 4);
1496 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1497 encode_string(xdr, name->len, name->name);
1498}
1499
1500static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1501{
1502 __be32 *p;
1503
1504 p = reserve_space(xdr, 4);
1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1506 encode_delegation_type(xdr, type);
1507}
1508
1509static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1510{
1511 __be32 *p;
1512
1513 p = reserve_space(xdr, 4);
1514 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1515 encode_nfs4_stateid(xdr, stateid);
1516 encode_string(xdr, name->len, name->name);
1517}
1518
1519static inline void encode_claim_fh(struct xdr_stream *xdr)
1520{
1521 __be32 *p;
1522
1523 p = reserve_space(xdr, 4);
1524 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1525}
1526
1527static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1528{
1529 __be32 *p;
1530
1531 p = reserve_space(xdr, 4);
1532 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1533 encode_nfs4_stateid(xdr, stateid);
1534}
1535
1536static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1537{
1538 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1539 encode_openhdr(xdr, arg);
1540 encode_opentype(xdr, arg);
1541 switch (arg->claim) {
1542 case NFS4_OPEN_CLAIM_NULL:
1543 encode_claim_null(xdr, arg->name);
1544 break;
1545 case NFS4_OPEN_CLAIM_PREVIOUS:
1546 encode_claim_previous(xdr, arg->u.delegation_type);
1547 break;
1548 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1549 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1550 break;
1551 case NFS4_OPEN_CLAIM_FH:
1552 encode_claim_fh(xdr);
1553 break;
1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1555 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1556 break;
1557 default:
1558 BUG();
1559 }
1560}
1561
1562static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1563{
1564 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1565 encode_nfs4_stateid(xdr, arg->stateid);
1566 encode_nfs4_seqid(xdr, arg->seqid);
1567}
1568
1569static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1570{
1571 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1572 encode_nfs4_stateid(xdr, &arg->stateid);
1573 encode_nfs4_seqid(xdr, arg->seqid);
1574 encode_share_access(xdr, arg->share_access);
1575}
1576
1577static void
1578encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1579{
1580 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1581 encode_string(xdr, fh->size, fh->data);
1582}
1583
1584static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1585{
1586 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1587}
1588
1589static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1590 struct compound_hdr *hdr)
1591{
1592 __be32 *p;
1593
1594 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1595 encode_nfs4_stateid(xdr, &args->stateid);
1596
1597 p = reserve_space(xdr, 12);
1598 p = xdr_encode_hyper(p, args->offset);
1599 *p = cpu_to_be32(args->count);
1600}
1601
1602static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1603{
1604 uint32_t attrs[3] = {
1605 FATTR4_WORD0_TYPE
1606 | FATTR4_WORD0_RDATTR_ERROR,
1607 FATTR4_WORD1_MOUNTED_ON_FILEID,
1608 };
1609 uint32_t dircount = readdir->count;
1610 uint32_t maxcount = readdir->count;
1611 __be32 *p, verf[2];
1612 uint32_t attrlen = 0;
1613 unsigned int i;
1614
1615 if (readdir->plus) {
1616 attrs[0] |= FATTR4_WORD0_CHANGE
1617 | FATTR4_WORD0_SIZE
1618 | FATTR4_WORD0_FSID
1619 | FATTR4_WORD0_FILEHANDLE
1620 | FATTR4_WORD0_FILEID;
1621 attrs[1] |= FATTR4_WORD1_MODE
1622 | FATTR4_WORD1_NUMLINKS
1623 | FATTR4_WORD1_OWNER
1624 | FATTR4_WORD1_OWNER_GROUP
1625 | FATTR4_WORD1_RAWDEV
1626 | FATTR4_WORD1_SPACE_USED
1627 | FATTR4_WORD1_TIME_ACCESS
1628 | FATTR4_WORD1_TIME_METADATA
1629 | FATTR4_WORD1_TIME_MODIFY;
1630 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1631 }
1632 /* Use mounted_on_fileid only if the server supports it */
1633 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1634 attrs[0] |= FATTR4_WORD0_FILEID;
1635 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1636 attrs[i] &= readdir->bitmask[i];
1637 if (attrs[i] != 0)
1638 attrlen = i+1;
1639 }
1640
1641 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1642 encode_uint64(xdr, readdir->cookie);
1643 encode_nfs4_verifier(xdr, &readdir->verifier);
1644 p = reserve_space(xdr, 12 + (attrlen << 2));
1645 *p++ = cpu_to_be32(dircount);
1646 *p++ = cpu_to_be32(maxcount);
1647 *p++ = cpu_to_be32(attrlen);
1648 for (i = 0; i < attrlen; i++)
1649 *p++ = cpu_to_be32(attrs[i]);
1650 memcpy(verf, readdir->verifier.data, sizeof(verf));
1651
1652 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1653 __func__,
1654 (unsigned long long)readdir->cookie,
1655 verf[0], verf[1],
1656 attrs[0] & readdir->bitmask[0],
1657 attrs[1] & readdir->bitmask[1],
1658 attrs[2] & readdir->bitmask[2]);
1659}
1660
1661static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1662{
1663 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1664}
1665
1666static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1667{
1668 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1669 encode_string(xdr, name->len, name->name);
1670}
1671
1672static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1673{
1674 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1675 encode_string(xdr, oldname->len, oldname->name);
1676 encode_string(xdr, newname->len, newname->name);
1677}
1678
1679static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1680 struct compound_hdr *hdr)
1681{
1682 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1683 encode_uint64(xdr, clid);
1684}
1685
1686static void
1687encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1688{
1689 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1690}
1691
1692static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2])
1693{
1694 switch (type) {
1695 default:
1696 bitmap[0] = FATTR4_WORD0_ACL;
1697 bitmap[1] = 0;
1698 break;
1699 case NFS4ACL_DACL:
1700 bitmap[0] = 0;
1701 bitmap[1] = FATTR4_WORD1_DACL;
1702 break;
1703 case NFS4ACL_SACL:
1704 bitmap[0] = 0;
1705 bitmap[1] = FATTR4_WORD1_SACL;
1706 }
1707}
1708
1709static void encode_setacl(struct xdr_stream *xdr,
1710 const struct nfs_setaclargs *arg,
1711 struct compound_hdr *hdr)
1712{
1713 __u32 bitmap[2];
1714
1715 nfs4_acltype_to_bitmap(arg->acl_type, bitmap);
1716
1717 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1718 encode_nfs4_stateid(xdr, &zero_stateid);
1719 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap));
1720 encode_uint32(xdr, arg->acl_len);
1721 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1722}
1723
1724static void
1725encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1726{
1727 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1728}
1729
1730static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1731{
1732 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1733 encode_nfs4_stateid(xdr, &arg->stateid);
1734 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1735 server->attr_bitmask);
1736}
1737
1738static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1739{
1740 __be32 *p;
1741
1742 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1743 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1744
1745 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1746 setclientid->sc_clnt->cl_owner_id);
1747 p = reserve_space(xdr, 4);
1748 *p = cpu_to_be32(setclientid->sc_prog);
1749 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1750 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1751 p = reserve_space(xdr, 4);
1752 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1753}
1754
1755static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1756{
1757 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1758 decode_setclientid_confirm_maxsz, hdr);
1759 encode_uint64(xdr, arg->clientid);
1760 encode_nfs4_verifier(xdr, &arg->confirm);
1761}
1762
1763static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1764 struct compound_hdr *hdr)
1765{
1766 __be32 *p;
1767
1768 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1769 encode_nfs4_stateid(xdr, &args->stateid);
1770
1771 p = reserve_space(xdr, 16);
1772 p = xdr_encode_hyper(p, args->offset);
1773 *p++ = cpu_to_be32(args->stable);
1774 *p = cpu_to_be32(args->count);
1775
1776 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1777}
1778
1779static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1780{
1781 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1782 encode_nfs4_stateid(xdr, stateid);
1783}
1784
1785static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1786{
1787 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1788 encode_string(xdr, name->len, name->name);
1789}
1790
1791#if defined(CONFIG_NFS_V4_1)
1792/* NFSv4.1 operations */
1793static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1794 const struct nfs41_bind_conn_to_session_args *args,
1795 struct compound_hdr *hdr)
1796{
1797 __be32 *p;
1798
1799 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1800 decode_bind_conn_to_session_maxsz, hdr);
1801 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1802 p = xdr_reserve_space(xdr, 8);
1803 *p++ = cpu_to_be32(args->dir);
1804 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1805}
1806
1807static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1808{
1809 unsigned int i;
1810 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1811 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1812 encode_uint32(xdr, op_map->u.words[i]);
1813}
1814
1815static void encode_exchange_id(struct xdr_stream *xdr,
1816 const struct nfs41_exchange_id_args *args,
1817 struct compound_hdr *hdr)
1818{
1819 __be32 *p;
1820 char impl_name[IMPL_NAME_LIMIT];
1821 int len = 0;
1822
1823 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1824 encode_nfs4_verifier(xdr, &args->verifier);
1825
1826 encode_string(xdr, strlen(args->client->cl_owner_id),
1827 args->client->cl_owner_id);
1828
1829 encode_uint32(xdr, args->flags);
1830 encode_uint32(xdr, args->state_protect.how);
1831
1832 switch (args->state_protect.how) {
1833 case SP4_NONE:
1834 break;
1835 case SP4_MACH_CRED:
1836 encode_op_map(xdr, &args->state_protect.enforce);
1837 encode_op_map(xdr, &args->state_protect.allow);
1838 break;
1839 default:
1840 WARN_ON_ONCE(1);
1841 break;
1842 }
1843
1844 if (send_implementation_id &&
1845 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1846 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1847 <= sizeof(impl_name) + 1)
1848 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1849 utsname()->sysname, utsname()->release,
1850 utsname()->version, utsname()->machine);
1851
1852 if (len > 0) {
1853 encode_uint32(xdr, 1); /* implementation id array length=1 */
1854
1855 encode_string(xdr,
1856 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1857 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1858 encode_string(xdr, len, impl_name);
1859 /* just send zeros for nii_date - the date is in nii_name */
1860 p = reserve_space(xdr, 12);
1861 p = xdr_encode_hyper(p, 0);
1862 *p = cpu_to_be32(0);
1863 } else
1864 encode_uint32(xdr, 0); /* implementation id array length=0 */
1865}
1866
1867static void encode_create_session(struct xdr_stream *xdr,
1868 const struct nfs41_create_session_args *args,
1869 struct compound_hdr *hdr)
1870{
1871 __be32 *p;
1872 struct nfs_client *clp = args->client;
1873 struct rpc_clnt *clnt = clp->cl_rpcclient;
1874 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1875 u32 max_resp_sz_cached;
1876
1877 /*
1878 * Assumes OPEN is the biggest non-idempotent compound.
1879 * 2 is the verifier.
1880 */
1881 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1882 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1883
1884 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1885 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1886 p = xdr_encode_hyper(p, args->clientid);
1887 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1888 *p++ = cpu_to_be32(args->flags); /*flags */
1889
1890 /* Fore Channel */
1891 *p++ = cpu_to_be32(0); /* header padding size */
1892 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1893 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1894 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1895 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1896 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1897 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1898
1899 /* Back Channel */
1900 *p++ = cpu_to_be32(0); /* header padding size */
1901 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1902 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1903 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1904 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1905 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1906 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1907
1908 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1909 *p++ = cpu_to_be32(1);
1910 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1911
1912 /* authsys_parms rfc1831 */
1913 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1914 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1915 *p++ = cpu_to_be32(0); /* UID */
1916 *p++ = cpu_to_be32(0); /* GID */
1917 *p = cpu_to_be32(0); /* No more gids */
1918}
1919
1920static void encode_destroy_session(struct xdr_stream *xdr,
1921 const struct nfs4_session *session,
1922 struct compound_hdr *hdr)
1923{
1924 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1925 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1926}
1927
1928static void encode_destroy_clientid(struct xdr_stream *xdr,
1929 uint64_t clientid,
1930 struct compound_hdr *hdr)
1931{
1932 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1933 encode_uint64(xdr, clientid);
1934}
1935
1936static void encode_reclaim_complete(struct xdr_stream *xdr,
1937 const struct nfs41_reclaim_complete_args *args,
1938 struct compound_hdr *hdr)
1939{
1940 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1941 encode_uint32(xdr, args->one_fs);
1942}
1943#endif /* CONFIG_NFS_V4_1 */
1944
1945static void encode_sequence(struct xdr_stream *xdr,
1946 const struct nfs4_sequence_args *args,
1947 struct compound_hdr *hdr)
1948{
1949#if defined(CONFIG_NFS_V4_1)
1950 struct nfs4_session *session;
1951 struct nfs4_slot_table *tp;
1952 struct nfs4_slot *slot = args->sa_slot;
1953 __be32 *p;
1954
1955 tp = slot->table;
1956 session = tp->session;
1957 if (!session)
1958 return;
1959
1960 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1961
1962 /*
1963 * Sessionid + seqid + slotid + max slotid + cache_this
1964 */
1965 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1966 "max_slotid=%d cache_this=%d\n",
1967 __func__,
1968 ((u32 *)session->sess_id.data)[0],
1969 ((u32 *)session->sess_id.data)[1],
1970 ((u32 *)session->sess_id.data)[2],
1971 ((u32 *)session->sess_id.data)[3],
1972 slot->seq_nr, slot->slot_nr,
1973 tp->highest_used_slotid, args->sa_cache_this);
1974 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1975 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1976 *p++ = cpu_to_be32(slot->seq_nr);
1977 *p++ = cpu_to_be32(slot->slot_nr);
1978 *p++ = cpu_to_be32(tp->highest_used_slotid);
1979 *p = cpu_to_be32(args->sa_cache_this);
1980#endif /* CONFIG_NFS_V4_1 */
1981}
1982
1983#ifdef CONFIG_NFS_V4_1
1984static void
1985encode_getdeviceinfo(struct xdr_stream *xdr,
1986 const struct nfs4_getdeviceinfo_args *args,
1987 struct compound_hdr *hdr)
1988{
1989 __be32 *p;
1990
1991 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1992 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1993 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1994 NFS4_DEVICEID4_SIZE);
1995 *p++ = cpu_to_be32(args->pdev->layout_type);
1996 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1997
1998 p = reserve_space(xdr, 4 + 4);
1999 *p++ = cpu_to_be32(1); /* bitmap length */
2000 *p++ = cpu_to_be32(args->notify_types);
2001}
2002
2003static void
2004encode_layoutget(struct xdr_stream *xdr,
2005 const struct nfs4_layoutget_args *args,
2006 struct compound_hdr *hdr)
2007{
2008 __be32 *p;
2009
2010 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
2011 p = reserve_space(xdr, 36);
2012 *p++ = cpu_to_be32(0); /* Signal layout available */
2013 *p++ = cpu_to_be32(args->type);
2014 *p++ = cpu_to_be32(args->range.iomode);
2015 p = xdr_encode_hyper(p, args->range.offset);
2016 p = xdr_encode_hyper(p, args->range.length);
2017 p = xdr_encode_hyper(p, args->minlength);
2018 encode_nfs4_stateid(xdr, &args->stateid);
2019 encode_uint32(xdr, args->maxcount);
2020
2021 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
2022 __func__,
2023 args->type,
2024 args->range.iomode,
2025 (unsigned long)args->range.offset,
2026 (unsigned long)args->range.length,
2027 args->maxcount);
2028}
2029
2030static int
2031encode_layoutcommit(struct xdr_stream *xdr,
2032 struct inode *inode,
2033 const struct nfs4_layoutcommit_args *args,
2034 struct compound_hdr *hdr)
2035{
2036 __be32 *p;
2037
2038 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
2039 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
2040
2041 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2042 p = reserve_space(xdr, 20);
2043 /* Only whole file layouts */
2044 p = xdr_encode_hyper(p, 0); /* offset */
2045 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2046 *p = cpu_to_be32(0); /* reclaim */
2047 encode_nfs4_stateid(xdr, &args->stateid);
2048 if (args->lastbytewritten != U64_MAX) {
2049 p = reserve_space(xdr, 20);
2050 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2051 p = xdr_encode_hyper(p, args->lastbytewritten);
2052 } else {
2053 p = reserve_space(xdr, 12);
2054 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2055 }
2056 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2057 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2058
2059 encode_uint32(xdr, args->layoutupdate_len);
2060 if (args->layoutupdate_pages)
2061 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2062 args->layoutupdate_len);
2063
2064 return 0;
2065}
2066
2067static void
2068encode_layoutreturn(struct xdr_stream *xdr,
2069 const struct nfs4_layoutreturn_args *args,
2070 struct compound_hdr *hdr)
2071{
2072 __be32 *p;
2073
2074 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2075 p = reserve_space(xdr, 16);
2076 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2077 *p++ = cpu_to_be32(args->layout_type);
2078 *p++ = cpu_to_be32(args->range.iomode);
2079 *p = cpu_to_be32(RETURN_FILE);
2080 p = reserve_space(xdr, 16);
2081 p = xdr_encode_hyper(p, args->range.offset);
2082 p = xdr_encode_hyper(p, args->range.length);
2083 spin_lock(&args->inode->i_lock);
2084 encode_nfs4_stateid(xdr, &args->stateid);
2085 spin_unlock(&args->inode->i_lock);
2086 if (args->ld_private->ops && args->ld_private->ops->encode)
2087 args->ld_private->ops->encode(xdr, args, args->ld_private);
2088 else
2089 encode_uint32(xdr, 0);
2090}
2091
2092static int
2093encode_secinfo_no_name(struct xdr_stream *xdr,
2094 const struct nfs41_secinfo_no_name_args *args,
2095 struct compound_hdr *hdr)
2096{
2097 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2098 encode_uint32(xdr, args->style);
2099 return 0;
2100}
2101
2102static void encode_test_stateid(struct xdr_stream *xdr,
2103 const struct nfs41_test_stateid_args *args,
2104 struct compound_hdr *hdr)
2105{
2106 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2107 encode_uint32(xdr, 1);
2108 encode_nfs4_stateid(xdr, args->stateid);
2109}
2110
2111static void encode_free_stateid(struct xdr_stream *xdr,
2112 const struct nfs41_free_stateid_args *args,
2113 struct compound_hdr *hdr)
2114{
2115 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2116 encode_nfs4_stateid(xdr, &args->stateid);
2117}
2118#else
2119static inline void
2120encode_layoutreturn(struct xdr_stream *xdr,
2121 const struct nfs4_layoutreturn_args *args,
2122 struct compound_hdr *hdr)
2123{
2124}
2125
2126static void
2127encode_layoutget(struct xdr_stream *xdr,
2128 const struct nfs4_layoutget_args *args,
2129 struct compound_hdr *hdr)
2130{
2131}
2132#endif /* CONFIG_NFS_V4_1 */
2133
2134/*
2135 * END OF "GENERIC" ENCODE ROUTINES.
2136 */
2137
2138static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2139{
2140#if defined(CONFIG_NFS_V4_1)
2141 struct nfs4_session *session = args->sa_slot->table->session;
2142 if (session)
2143 return session->clp->cl_mvops->minor_version;
2144#endif /* CONFIG_NFS_V4_1 */
2145 return 0;
2146}
2147
2148/*
2149 * Encode an ACCESS request
2150 */
2151static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2152 const void *data)
2153{
2154 const struct nfs4_accessargs *args = data;
2155 struct compound_hdr hdr = {
2156 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2157 };
2158
2159 encode_compound_hdr(xdr, req, &hdr);
2160 encode_sequence(xdr, &args->seq_args, &hdr);
2161 encode_putfh(xdr, args->fh, &hdr);
2162 encode_access(xdr, args->access, &hdr);
2163 if (args->bitmask)
2164 encode_getfattr(xdr, args->bitmask, &hdr);
2165 encode_nops(&hdr);
2166}
2167
2168/*
2169 * Encode LOOKUP request
2170 */
2171static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2172 const void *data)
2173{
2174 const struct nfs4_lookup_arg *args = data;
2175 struct compound_hdr hdr = {
2176 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2177 };
2178
2179 encode_compound_hdr(xdr, req, &hdr);
2180 encode_sequence(xdr, &args->seq_args, &hdr);
2181 encode_putfh(xdr, args->dir_fh, &hdr);
2182 encode_lookup(xdr, args->name, &hdr);
2183 encode_getfh(xdr, &hdr);
2184 encode_getfattr(xdr, args->bitmask, &hdr);
2185 encode_nops(&hdr);
2186}
2187
2188/*
2189 * Encode LOOKUPP request
2190 */
2191static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2192 const void *data)
2193{
2194 const struct nfs4_lookupp_arg *args = data;
2195 struct compound_hdr hdr = {
2196 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2197 };
2198
2199 encode_compound_hdr(xdr, req, &hdr);
2200 encode_sequence(xdr, &args->seq_args, &hdr);
2201 encode_putfh(xdr, args->fh, &hdr);
2202 encode_lookupp(xdr, &hdr);
2203 encode_getfh(xdr, &hdr);
2204 encode_getfattr(xdr, args->bitmask, &hdr);
2205 encode_nops(&hdr);
2206}
2207
2208/*
2209 * Encode LOOKUP_ROOT request
2210 */
2211static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2212 struct xdr_stream *xdr,
2213 const void *data)
2214{
2215 const struct nfs4_lookup_root_arg *args = data;
2216 struct compound_hdr hdr = {
2217 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2218 };
2219
2220 encode_compound_hdr(xdr, req, &hdr);
2221 encode_sequence(xdr, &args->seq_args, &hdr);
2222 encode_putrootfh(xdr, &hdr);
2223 encode_getfh(xdr, &hdr);
2224 encode_getfattr(xdr, args->bitmask, &hdr);
2225 encode_nops(&hdr);
2226}
2227
2228/*
2229 * Encode REMOVE request
2230 */
2231static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2232 const void *data)
2233{
2234 const struct nfs_removeargs *args = data;
2235 struct compound_hdr hdr = {
2236 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2237 };
2238
2239 encode_compound_hdr(xdr, req, &hdr);
2240 encode_sequence(xdr, &args->seq_args, &hdr);
2241 encode_putfh(xdr, args->fh, &hdr);
2242 encode_remove(xdr, &args->name, &hdr);
2243 encode_nops(&hdr);
2244}
2245
2246/*
2247 * Encode RENAME request
2248 */
2249static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2250 const void *data)
2251{
2252 const struct nfs_renameargs *args = data;
2253 struct compound_hdr hdr = {
2254 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2255 };
2256
2257 encode_compound_hdr(xdr, req, &hdr);
2258 encode_sequence(xdr, &args->seq_args, &hdr);
2259 encode_putfh(xdr, args->old_dir, &hdr);
2260 encode_savefh(xdr, &hdr);
2261 encode_putfh(xdr, args->new_dir, &hdr);
2262 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2263 encode_nops(&hdr);
2264}
2265
2266/*
2267 * Encode LINK request
2268 */
2269static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2270 const void *data)
2271{
2272 const struct nfs4_link_arg *args = data;
2273 struct compound_hdr hdr = {
2274 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2275 };
2276
2277 encode_compound_hdr(xdr, req, &hdr);
2278 encode_sequence(xdr, &args->seq_args, &hdr);
2279 encode_putfh(xdr, args->fh, &hdr);
2280 encode_savefh(xdr, &hdr);
2281 encode_putfh(xdr, args->dir_fh, &hdr);
2282 encode_link(xdr, args->name, &hdr);
2283 encode_restorefh(xdr, &hdr);
2284 encode_getfattr(xdr, args->bitmask, &hdr);
2285 encode_nops(&hdr);
2286}
2287
2288/*
2289 * Encode CREATE request
2290 */
2291static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2292 const void *data)
2293{
2294 const struct nfs4_create_arg *args = data;
2295 struct compound_hdr hdr = {
2296 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2297 };
2298
2299 encode_compound_hdr(xdr, req, &hdr);
2300 encode_sequence(xdr, &args->seq_args, &hdr);
2301 encode_putfh(xdr, args->dir_fh, &hdr);
2302 encode_create(xdr, args, &hdr);
2303 encode_getfh(xdr, &hdr);
2304 encode_getfattr(xdr, args->bitmask, &hdr);
2305 encode_nops(&hdr);
2306}
2307
2308/*
2309 * Encode SYMLINK request
2310 */
2311static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2312 const void *data)
2313{
2314 const struct nfs4_create_arg *args = data;
2315
2316 nfs4_xdr_enc_create(req, xdr, args);
2317}
2318
2319/*
2320 * Encode GETATTR request
2321 */
2322static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2323 const void *data)
2324{
2325 const struct nfs4_getattr_arg *args = data;
2326 struct compound_hdr hdr = {
2327 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2328 };
2329
2330 encode_compound_hdr(xdr, req, &hdr);
2331 encode_sequence(xdr, &args->seq_args, &hdr);
2332 encode_putfh(xdr, args->fh, &hdr);
2333 encode_getfattr(xdr, args->bitmask, &hdr);
2334 encode_nops(&hdr);
2335}
2336
2337/*
2338 * Encode a CLOSE request
2339 */
2340static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2341 const void *data)
2342{
2343 const struct nfs_closeargs *args = data;
2344 struct compound_hdr hdr = {
2345 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2346 };
2347
2348 encode_compound_hdr(xdr, req, &hdr);
2349 encode_sequence(xdr, &args->seq_args, &hdr);
2350 encode_putfh(xdr, args->fh, &hdr);
2351 if (args->lr_args)
2352 encode_layoutreturn(xdr, args->lr_args, &hdr);
2353 if (args->bitmask != NULL)
2354 encode_getfattr(xdr, args->bitmask, &hdr);
2355 encode_close(xdr, args, &hdr);
2356 encode_nops(&hdr);
2357}
2358
2359/*
2360 * Encode an OPEN request
2361 */
2362static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2363 const void *data)
2364{
2365 const struct nfs_openargs *args = data;
2366 struct compound_hdr hdr = {
2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2368 };
2369
2370 encode_compound_hdr(xdr, req, &hdr);
2371 encode_sequence(xdr, &args->seq_args, &hdr);
2372 encode_putfh(xdr, args->fh, &hdr);
2373 encode_open(xdr, args, &hdr);
2374 encode_getfh(xdr, &hdr);
2375 if (args->access)
2376 encode_access(xdr, args->access, &hdr);
2377 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2378 if (args->lg_args) {
2379 encode_layoutget(xdr, args->lg_args, &hdr);
2380 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2381 args->lg_args->layout.pglen,
2382 hdr.replen - pagepad_maxsz);
2383 }
2384 encode_nops(&hdr);
2385}
2386
2387/*
2388 * Encode an OPEN_CONFIRM request
2389 */
2390static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2391 struct xdr_stream *xdr,
2392 const void *data)
2393{
2394 const struct nfs_open_confirmargs *args = data;
2395 struct compound_hdr hdr = {
2396 .nops = 0,
2397 };
2398
2399 encode_compound_hdr(xdr, req, &hdr);
2400 encode_putfh(xdr, args->fh, &hdr);
2401 encode_open_confirm(xdr, args, &hdr);
2402 encode_nops(&hdr);
2403}
2404
2405/*
2406 * Encode an OPEN request with no attributes.
2407 */
2408static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2409 struct xdr_stream *xdr,
2410 const void *data)
2411{
2412 const struct nfs_openargs *args = data;
2413 struct compound_hdr hdr = {
2414 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2415 };
2416
2417 encode_compound_hdr(xdr, req, &hdr);
2418 encode_sequence(xdr, &args->seq_args, &hdr);
2419 encode_putfh(xdr, args->fh, &hdr);
2420 encode_open(xdr, args, &hdr);
2421 if (args->access)
2422 encode_access(xdr, args->access, &hdr);
2423 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2424 if (args->lg_args) {
2425 encode_layoutget(xdr, args->lg_args, &hdr);
2426 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2427 args->lg_args->layout.pglen,
2428 hdr.replen - pagepad_maxsz);
2429 }
2430 encode_nops(&hdr);
2431}
2432
2433/*
2434 * Encode an OPEN_DOWNGRADE request
2435 */
2436static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2437 struct xdr_stream *xdr,
2438 const void *data)
2439{
2440 const struct nfs_closeargs *args = data;
2441 struct compound_hdr hdr = {
2442 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2443 };
2444
2445 encode_compound_hdr(xdr, req, &hdr);
2446 encode_sequence(xdr, &args->seq_args, &hdr);
2447 encode_putfh(xdr, args->fh, &hdr);
2448 if (args->lr_args)
2449 encode_layoutreturn(xdr, args->lr_args, &hdr);
2450 encode_open_downgrade(xdr, args, &hdr);
2451 encode_nops(&hdr);
2452}
2453
2454/*
2455 * Encode a LOCK request
2456 */
2457static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2458 const void *data)
2459{
2460 const struct nfs_lock_args *args = data;
2461 struct compound_hdr hdr = {
2462 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2463 };
2464
2465 encode_compound_hdr(xdr, req, &hdr);
2466 encode_sequence(xdr, &args->seq_args, &hdr);
2467 encode_putfh(xdr, args->fh, &hdr);
2468 encode_lock(xdr, args, &hdr);
2469 encode_nops(&hdr);
2470}
2471
2472/*
2473 * Encode a LOCKT request
2474 */
2475static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2476 const void *data)
2477{
2478 const struct nfs_lockt_args *args = data;
2479 struct compound_hdr hdr = {
2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2481 };
2482
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 encode_lockt(xdr, args, &hdr);
2487 encode_nops(&hdr);
2488}
2489
2490/*
2491 * Encode a LOCKU request
2492 */
2493static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2494 const void *data)
2495{
2496 const struct nfs_locku_args *args = data;
2497 struct compound_hdr hdr = {
2498 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2499 };
2500
2501 encode_compound_hdr(xdr, req, &hdr);
2502 encode_sequence(xdr, &args->seq_args, &hdr);
2503 encode_putfh(xdr, args->fh, &hdr);
2504 encode_locku(xdr, args, &hdr);
2505 encode_nops(&hdr);
2506}
2507
2508static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2509 struct xdr_stream *xdr,
2510 const void *data)
2511{
2512 const struct nfs_release_lockowner_args *args = data;
2513 struct compound_hdr hdr = {
2514 .minorversion = 0,
2515 };
2516
2517 encode_compound_hdr(xdr, req, &hdr);
2518 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2519 encode_nops(&hdr);
2520}
2521
2522/*
2523 * Encode a READLINK request
2524 */
2525static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2526 const void *data)
2527{
2528 const struct nfs4_readlink *args = data;
2529 struct compound_hdr hdr = {
2530 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2531 };
2532
2533 encode_compound_hdr(xdr, req, &hdr);
2534 encode_sequence(xdr, &args->seq_args, &hdr);
2535 encode_putfh(xdr, args->fh, &hdr);
2536 encode_readlink(xdr, args, req, &hdr);
2537
2538 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2539 args->pglen, hdr.replen - pagepad_maxsz);
2540 encode_nops(&hdr);
2541}
2542
2543/*
2544 * Encode a READDIR request
2545 */
2546static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2547 const void *data)
2548{
2549 const struct nfs4_readdir_arg *args = data;
2550 struct compound_hdr hdr = {
2551 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2552 };
2553
2554 encode_compound_hdr(xdr, req, &hdr);
2555 encode_sequence(xdr, &args->seq_args, &hdr);
2556 encode_putfh(xdr, args->fh, &hdr);
2557 encode_readdir(xdr, args, req, &hdr);
2558
2559 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2560 args->count, hdr.replen - pagepad_maxsz);
2561 encode_nops(&hdr);
2562}
2563
2564/*
2565 * Encode a READ request
2566 */
2567static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2568 const void *data)
2569{
2570 const struct nfs_pgio_args *args = data;
2571 struct compound_hdr hdr = {
2572 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2573 };
2574
2575 encode_compound_hdr(xdr, req, &hdr);
2576 encode_sequence(xdr, &args->seq_args, &hdr);
2577 encode_putfh(xdr, args->fh, &hdr);
2578 encode_read(xdr, args, &hdr);
2579
2580 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2581 args->count, hdr.replen - pagepad_maxsz);
2582 req->rq_rcv_buf.flags |= XDRBUF_READ;
2583 encode_nops(&hdr);
2584}
2585
2586/*
2587 * Encode an SETATTR request
2588 */
2589static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2590 const void *data)
2591{
2592 const struct nfs_setattrargs *args = data;
2593 struct compound_hdr hdr = {
2594 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2595 };
2596
2597 encode_compound_hdr(xdr, req, &hdr);
2598 encode_sequence(xdr, &args->seq_args, &hdr);
2599 encode_putfh(xdr, args->fh, &hdr);
2600 encode_setattr(xdr, args, args->server, &hdr);
2601 encode_getfattr(xdr, args->bitmask, &hdr);
2602 encode_nops(&hdr);
2603}
2604
2605/*
2606 * Encode a GETACL request
2607 */
2608static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2609 const void *data)
2610{
2611 const struct nfs_getaclargs *args = data;
2612 struct compound_hdr hdr = {
2613 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2614 };
2615 __u32 nfs4_acl_bitmap[2];
2616 uint32_t replen;
2617
2618 nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap);
2619
2620 encode_compound_hdr(xdr, req, &hdr);
2621 encode_sequence(xdr, &args->seq_args, &hdr);
2622 encode_putfh(xdr, args->fh, &hdr);
2623 replen = hdr.replen + op_decode_hdr_maxsz;
2624 encode_getattr(xdr, nfs4_acl_bitmap, NULL,
2625 ARRAY_SIZE(nfs4_acl_bitmap), &hdr);
2626
2627 rpc_prepare_reply_pages(req, args->acl_pages, 0,
2628 args->acl_len, replen);
2629 encode_nops(&hdr);
2630}
2631
2632/*
2633 * Encode a WRITE request
2634 */
2635static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2636 const void *data)
2637{
2638 const struct nfs_pgio_args *args = data;
2639 struct compound_hdr hdr = {
2640 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2641 };
2642
2643 encode_compound_hdr(xdr, req, &hdr);
2644 encode_sequence(xdr, &args->seq_args, &hdr);
2645 encode_putfh(xdr, args->fh, &hdr);
2646 encode_write(xdr, args, &hdr);
2647 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2648 if (args->bitmask)
2649 encode_getfattr(xdr, args->bitmask, &hdr);
2650 encode_nops(&hdr);
2651}
2652
2653/*
2654 * a COMMIT request
2655 */
2656static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2657 const void *data)
2658{
2659 const struct nfs_commitargs *args = data;
2660 struct compound_hdr hdr = {
2661 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2662 };
2663
2664 encode_compound_hdr(xdr, req, &hdr);
2665 encode_sequence(xdr, &args->seq_args, &hdr);
2666 encode_putfh(xdr, args->fh, &hdr);
2667 encode_commit(xdr, args, &hdr);
2668 encode_nops(&hdr);
2669}
2670
2671/*
2672 * FSINFO request
2673 */
2674static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2675 const void *data)
2676{
2677 const struct nfs4_fsinfo_arg *args = data;
2678 struct compound_hdr hdr = {
2679 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2680 };
2681
2682 encode_compound_hdr(xdr, req, &hdr);
2683 encode_sequence(xdr, &args->seq_args, &hdr);
2684 encode_putfh(xdr, args->fh, &hdr);
2685 encode_fsinfo(xdr, args->bitmask, &hdr);
2686 encode_nops(&hdr);
2687}
2688
2689/*
2690 * a PATHCONF request
2691 */
2692static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2693 const void *data)
2694{
2695 const struct nfs4_pathconf_arg *args = data;
2696 struct compound_hdr hdr = {
2697 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2698 };
2699
2700 encode_compound_hdr(xdr, req, &hdr);
2701 encode_sequence(xdr, &args->seq_args, &hdr);
2702 encode_putfh(xdr, args->fh, &hdr);
2703 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask,
2704 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr);
2705 encode_nops(&hdr);
2706}
2707
2708/*
2709 * a STATFS request
2710 */
2711static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2712 const void *data)
2713{
2714 const struct nfs4_statfs_arg *args = data;
2715 struct compound_hdr hdr = {
2716 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2717 };
2718
2719 encode_compound_hdr(xdr, req, &hdr);
2720 encode_sequence(xdr, &args->seq_args, &hdr);
2721 encode_putfh(xdr, args->fh, &hdr);
2722 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask,
2723 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr);
2724 encode_nops(&hdr);
2725}
2726
2727/*
2728 * GETATTR_BITMAP request
2729 */
2730static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2731 struct xdr_stream *xdr,
2732 const void *data)
2733{
2734 const struct nfs4_server_caps_arg *args = data;
2735 const u32 *bitmask = args->bitmask;
2736 struct compound_hdr hdr = {
2737 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2738 };
2739
2740 encode_compound_hdr(xdr, req, &hdr);
2741 encode_sequence(xdr, &args->seq_args, &hdr);
2742 encode_putfh(xdr, args->fhandle, &hdr);
2743 encode_getattr(xdr, bitmask, NULL, 3, &hdr);
2744 encode_nops(&hdr);
2745}
2746
2747/*
2748 * a RENEW request
2749 */
2750static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2751 const void *data)
2752
2753{
2754 const struct nfs_client *clp = data;
2755 struct compound_hdr hdr = {
2756 .nops = 0,
2757 };
2758
2759 encode_compound_hdr(xdr, req, &hdr);
2760 encode_renew(xdr, clp->cl_clientid, &hdr);
2761 encode_nops(&hdr);
2762}
2763
2764/*
2765 * a SETCLIENTID request
2766 */
2767static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2768 struct xdr_stream *xdr,
2769 const void *data)
2770{
2771 const struct nfs4_setclientid *sc = data;
2772 struct compound_hdr hdr = {
2773 .nops = 0,
2774 };
2775
2776 encode_compound_hdr(xdr, req, &hdr);
2777 encode_setclientid(xdr, sc, &hdr);
2778 encode_nops(&hdr);
2779}
2780
2781/*
2782 * a SETCLIENTID_CONFIRM request
2783 */
2784static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2785 struct xdr_stream *xdr,
2786 const void *data)
2787{
2788 const struct nfs4_setclientid_res *arg = data;
2789 struct compound_hdr hdr = {
2790 .nops = 0,
2791 };
2792
2793 encode_compound_hdr(xdr, req, &hdr);
2794 encode_setclientid_confirm(xdr, arg, &hdr);
2795 encode_nops(&hdr);
2796}
2797
2798/*
2799 * DELEGRETURN request
2800 */
2801static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2802 struct xdr_stream *xdr,
2803 const void *data)
2804{
2805 const struct nfs4_delegreturnargs *args = data;
2806 struct compound_hdr hdr = {
2807 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2808 };
2809
2810 encode_compound_hdr(xdr, req, &hdr);
2811 encode_sequence(xdr, &args->seq_args, &hdr);
2812 encode_putfh(xdr, args->fhandle, &hdr);
2813 if (args->lr_args)
2814 encode_layoutreturn(xdr, args->lr_args, &hdr);
2815 if (args->bitmask)
2816 encode_getfattr(xdr, args->bitmask, &hdr);
2817 encode_delegreturn(xdr, args->stateid, &hdr);
2818 encode_nops(&hdr);
2819}
2820
2821/*
2822 * Encode FS_LOCATIONS request
2823 */
2824static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2825 struct xdr_stream *xdr,
2826 const void *data)
2827{
2828 const struct nfs4_fs_locations_arg *args = data;
2829 struct compound_hdr hdr = {
2830 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2831 };
2832 uint32_t replen;
2833
2834 encode_compound_hdr(xdr, req, &hdr);
2835 encode_sequence(xdr, &args->seq_args, &hdr);
2836 if (args->migration) {
2837 encode_putfh(xdr, args->fh, &hdr);
2838 replen = hdr.replen;
2839 encode_fs_locations(xdr, args->bitmask, &hdr);
2840 if (args->renew)
2841 encode_renew(xdr, args->clientid, &hdr);
2842 } else {
2843 encode_putfh(xdr, args->dir_fh, &hdr);
2844 encode_lookup(xdr, args->name, &hdr);
2845 replen = hdr.replen;
2846 encode_fs_locations(xdr, args->bitmask, &hdr);
2847 }
2848
2849 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0,
2850 PAGE_SIZE, replen);
2851 encode_nops(&hdr);
2852}
2853
2854/*
2855 * Encode SECINFO request
2856 */
2857static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2858 struct xdr_stream *xdr,
2859 const void *data)
2860{
2861 const struct nfs4_secinfo_arg *args = data;
2862 struct compound_hdr hdr = {
2863 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2864 };
2865
2866 encode_compound_hdr(xdr, req, &hdr);
2867 encode_sequence(xdr, &args->seq_args, &hdr);
2868 encode_putfh(xdr, args->dir_fh, &hdr);
2869 encode_secinfo(xdr, args->name, &hdr);
2870 encode_nops(&hdr);
2871}
2872
2873/*
2874 * Encode FSID_PRESENT request
2875 */
2876static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2877 struct xdr_stream *xdr,
2878 const void *data)
2879{
2880 const struct nfs4_fsid_present_arg *args = data;
2881 struct compound_hdr hdr = {
2882 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2883 };
2884
2885 encode_compound_hdr(xdr, req, &hdr);
2886 encode_sequence(xdr, &args->seq_args, &hdr);
2887 encode_putfh(xdr, args->fh, &hdr);
2888 encode_getfh(xdr, &hdr);
2889 if (args->renew)
2890 encode_renew(xdr, args->clientid, &hdr);
2891 encode_nops(&hdr);
2892}
2893
2894#if defined(CONFIG_NFS_V4_1)
2895/*
2896 * BIND_CONN_TO_SESSION request
2897 */
2898static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2899 struct xdr_stream *xdr,
2900 const void *data)
2901{
2902 const struct nfs41_bind_conn_to_session_args *args = data;
2903 struct compound_hdr hdr = {
2904 .minorversion = args->client->cl_mvops->minor_version,
2905 };
2906
2907 encode_compound_hdr(xdr, req, &hdr);
2908 encode_bind_conn_to_session(xdr, args, &hdr);
2909 encode_nops(&hdr);
2910}
2911
2912/*
2913 * EXCHANGE_ID request
2914 */
2915static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2916 struct xdr_stream *xdr,
2917 const void *data)
2918{
2919 const struct nfs41_exchange_id_args *args = data;
2920 struct compound_hdr hdr = {
2921 .minorversion = args->client->cl_mvops->minor_version,
2922 };
2923
2924 encode_compound_hdr(xdr, req, &hdr);
2925 encode_exchange_id(xdr, args, &hdr);
2926 encode_nops(&hdr);
2927}
2928
2929/*
2930 * a CREATE_SESSION request
2931 */
2932static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2933 struct xdr_stream *xdr,
2934 const void *data)
2935{
2936 const struct nfs41_create_session_args *args = data;
2937 struct compound_hdr hdr = {
2938 .minorversion = args->client->cl_mvops->minor_version,
2939 };
2940
2941 encode_compound_hdr(xdr, req, &hdr);
2942 encode_create_session(xdr, args, &hdr);
2943 encode_nops(&hdr);
2944}
2945
2946/*
2947 * a DESTROY_SESSION request
2948 */
2949static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2950 struct xdr_stream *xdr,
2951 const void *data)
2952{
2953 const struct nfs4_session *session = data;
2954 struct compound_hdr hdr = {
2955 .minorversion = session->clp->cl_mvops->minor_version,
2956 };
2957
2958 encode_compound_hdr(xdr, req, &hdr);
2959 encode_destroy_session(xdr, session, &hdr);
2960 encode_nops(&hdr);
2961}
2962
2963/*
2964 * a DESTROY_CLIENTID request
2965 */
2966static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2967 struct xdr_stream *xdr,
2968 const void *data)
2969{
2970 const struct nfs_client *clp = data;
2971 struct compound_hdr hdr = {
2972 .minorversion = clp->cl_mvops->minor_version,
2973 };
2974
2975 encode_compound_hdr(xdr, req, &hdr);
2976 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2977 encode_nops(&hdr);
2978}
2979
2980/*
2981 * a SEQUENCE request
2982 */
2983static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2984 const void *data)
2985{
2986 const struct nfs4_sequence_args *args = data;
2987 struct compound_hdr hdr = {
2988 .minorversion = nfs4_xdr_minorversion(args),
2989 };
2990
2991 encode_compound_hdr(xdr, req, &hdr);
2992 encode_sequence(xdr, args, &hdr);
2993 encode_nops(&hdr);
2994}
2995
2996#endif
2997
2998/*
2999 * a GET_LEASE_TIME request
3000 */
3001static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
3002 struct xdr_stream *xdr,
3003 const void *data)
3004{
3005 const struct nfs4_get_lease_time_args *args = data;
3006 struct compound_hdr hdr = {
3007 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
3008 };
3009 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
3010
3011 encode_compound_hdr(xdr, req, &hdr);
3012 encode_sequence(xdr, &args->la_seq_args, &hdr);
3013 encode_putrootfh(xdr, &hdr);
3014 encode_fsinfo(xdr, lease_bitmap, &hdr);
3015 encode_nops(&hdr);
3016}
3017
3018#ifdef CONFIG_NFS_V4_1
3019
3020/*
3021 * a RECLAIM_COMPLETE request
3022 */
3023static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
3024 struct xdr_stream *xdr,
3025 const void *data)
3026{
3027 const struct nfs41_reclaim_complete_args *args = data;
3028 struct compound_hdr hdr = {
3029 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
3030 };
3031
3032 encode_compound_hdr(xdr, req, &hdr);
3033 encode_sequence(xdr, &args->seq_args, &hdr);
3034 encode_reclaim_complete(xdr, args, &hdr);
3035 encode_nops(&hdr);
3036}
3037
3038/*
3039 * Encode GETDEVICEINFO request
3040 */
3041static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
3042 struct xdr_stream *xdr,
3043 const void *data)
3044{
3045 const struct nfs4_getdeviceinfo_args *args = data;
3046 struct compound_hdr hdr = {
3047 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3048 };
3049 uint32_t replen;
3050
3051 encode_compound_hdr(xdr, req, &hdr);
3052 encode_sequence(xdr, &args->seq_args, &hdr);
3053
3054 replen = hdr.replen + op_decode_hdr_maxsz + 2;
3055
3056 encode_getdeviceinfo(xdr, args, &hdr);
3057
3058 /* set up reply kvec. device_addr4 opaque data is read into the
3059 * pages */
3060 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
3061 args->pdev->pglen, replen);
3062 encode_nops(&hdr);
3063}
3064
3065/*
3066 * Encode LAYOUTGET request
3067 */
3068static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
3069 struct xdr_stream *xdr,
3070 const void *data)
3071{
3072 const struct nfs4_layoutget_args *args = data;
3073 struct compound_hdr hdr = {
3074 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3075 };
3076
3077 encode_compound_hdr(xdr, req, &hdr);
3078 encode_sequence(xdr, &args->seq_args, &hdr);
3079 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3080 encode_layoutget(xdr, args, &hdr);
3081
3082 rpc_prepare_reply_pages(req, args->layout.pages, 0,
3083 args->layout.pglen, hdr.replen - pagepad_maxsz);
3084 encode_nops(&hdr);
3085}
3086
3087/*
3088 * Encode LAYOUTCOMMIT request
3089 */
3090static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3091 struct xdr_stream *xdr,
3092 const void *priv)
3093{
3094 const struct nfs4_layoutcommit_args *args = priv;
3095 struct nfs4_layoutcommit_data *data =
3096 container_of(args, struct nfs4_layoutcommit_data, args);
3097 struct compound_hdr hdr = {
3098 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3099 };
3100
3101 encode_compound_hdr(xdr, req, &hdr);
3102 encode_sequence(xdr, &args->seq_args, &hdr);
3103 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3104 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3105 encode_getfattr(xdr, args->bitmask, &hdr);
3106 encode_nops(&hdr);
3107}
3108
3109/*
3110 * Encode LAYOUTRETURN request
3111 */
3112static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3113 struct xdr_stream *xdr,
3114 const void *data)
3115{
3116 const struct nfs4_layoutreturn_args *args = data;
3117 struct compound_hdr hdr = {
3118 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3119 };
3120
3121 encode_compound_hdr(xdr, req, &hdr);
3122 encode_sequence(xdr, &args->seq_args, &hdr);
3123 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3124 encode_layoutreturn(xdr, args, &hdr);
3125 encode_nops(&hdr);
3126}
3127
3128/*
3129 * Encode SECINFO_NO_NAME request
3130 */
3131static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3132 struct xdr_stream *xdr,
3133 const void *data)
3134{
3135 const struct nfs41_secinfo_no_name_args *args = data;
3136 struct compound_hdr hdr = {
3137 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3138 };
3139
3140 encode_compound_hdr(xdr, req, &hdr);
3141 encode_sequence(xdr, &args->seq_args, &hdr);
3142 encode_putrootfh(xdr, &hdr);
3143 encode_secinfo_no_name(xdr, args, &hdr);
3144 encode_nops(&hdr);
3145}
3146
3147/*
3148 * Encode TEST_STATEID request
3149 */
3150static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3151 struct xdr_stream *xdr,
3152 const void *data)
3153{
3154 const struct nfs41_test_stateid_args *args = data;
3155 struct compound_hdr hdr = {
3156 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3157 };
3158
3159 encode_compound_hdr(xdr, req, &hdr);
3160 encode_sequence(xdr, &args->seq_args, &hdr);
3161 encode_test_stateid(xdr, args, &hdr);
3162 encode_nops(&hdr);
3163}
3164
3165/*
3166 * Encode FREE_STATEID request
3167 */
3168static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3169 struct xdr_stream *xdr,
3170 const void *data)
3171{
3172 const struct nfs41_free_stateid_args *args = data;
3173 struct compound_hdr hdr = {
3174 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3175 };
3176
3177 encode_compound_hdr(xdr, req, &hdr);
3178 encode_sequence(xdr, &args->seq_args, &hdr);
3179 encode_free_stateid(xdr, args, &hdr);
3180 encode_nops(&hdr);
3181}
3182#endif /* CONFIG_NFS_V4_1 */
3183
3184static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3185{
3186 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3187 NFS4_OPAQUE_LIMIT);
3188 if (unlikely(ret < 0))
3189 return -EIO;
3190 *len = ret;
3191 return 0;
3192}
3193
3194static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3195{
3196 ssize_t ret;
3197 void *ptr;
3198 u32 tmp;
3199
3200 if (xdr_stream_decode_u32(xdr, &tmp) < 0)
3201 return -EIO;
3202 hdr->status = tmp;
3203
3204 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT);
3205 if (ret < 0)
3206 return -EIO;
3207 hdr->taglen = ret;
3208 hdr->tag = ptr;
3209
3210 if (xdr_stream_decode_u32(xdr, &tmp) < 0)
3211 return -EIO;
3212 hdr->nops = tmp;
3213 if (unlikely(hdr->nops < 1))
3214 return nfs4_stat_to_errno(hdr->status);
3215 return 0;
3216}
3217
3218static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3219 int *nfs_retval)
3220{
3221 __be32 *p;
3222 uint32_t opnum;
3223 int32_t nfserr;
3224
3225 p = xdr_inline_decode(xdr, 8);
3226 if (unlikely(!p))
3227 goto out_overflow;
3228 opnum = be32_to_cpup(p++);
3229 if (unlikely(opnum != expected))
3230 goto out_bad_operation;
3231 if (unlikely(*p != cpu_to_be32(NFS_OK)))
3232 goto out_status;
3233 *nfs_retval = 0;
3234 return true;
3235out_status:
3236 nfserr = be32_to_cpup(p);
3237 trace_nfs4_xdr_status(xdr, opnum, nfserr);
3238 *nfs_retval = nfs4_stat_to_errno(nfserr);
3239 return true;
3240out_bad_operation:
3241 trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
3242 *nfs_retval = -EREMOTEIO;
3243 return false;
3244out_overflow:
3245 *nfs_retval = -EIO;
3246 return false;
3247}
3248
3249static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3250{
3251 int retval;
3252
3253 __decode_op_hdr(xdr, expected, &retval);
3254 return retval;
3255}
3256
3257/* Dummy routine */
3258static int decode_ace(struct xdr_stream *xdr, void *ace)
3259{
3260 __be32 *p;
3261 unsigned int strlen;
3262 char *str;
3263
3264 p = xdr_inline_decode(xdr, 12);
3265 if (unlikely(!p))
3266 return -EIO;
3267 return decode_opaque_inline(xdr, &strlen, &str);
3268}
3269
3270static ssize_t
3271decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3272{
3273 ssize_t ret;
3274
3275 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz);
3276 if (likely(ret >= 0))
3277 return ret;
3278 if (ret != -EMSGSIZE)
3279 return -EIO;
3280 return sz;
3281}
3282
3283static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3284{
3285 ssize_t ret;
3286 ret = decode_bitmap4(xdr, bitmap, 3);
3287 return ret < 0 ? ret : 0;
3288}
3289
3290static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3291{
3292 __be32 *p;
3293
3294 p = xdr_inline_decode(xdr, 4);
3295 if (unlikely(!p))
3296 return -EIO;
3297 *attrlen = be32_to_cpup(p);
3298 *savep = xdr_stream_pos(xdr);
3299 return 0;
3300}
3301
3302static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3303{
3304 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3305 int ret;
3306 ret = decode_attr_bitmap(xdr, bitmask);
3307 if (unlikely(ret < 0))
3308 return ret;
3309 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3310 } else
3311 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3312 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3313 bitmask[0], bitmask[1], bitmask[2]);
3314 return 0;
3315}
3316
3317static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3318{
3319 __be32 *p;
3320 int ret = 0;
3321
3322 *type = 0;
3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3324 return -EIO;
3325 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3326 p = xdr_inline_decode(xdr, 4);
3327 if (unlikely(!p))
3328 return -EIO;
3329 *type = be32_to_cpup(p);
3330 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3331 dprintk("%s: bad type %d\n", __func__, *type);
3332 return -EIO;
3333 }
3334 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3335 ret = NFS_ATTR_FATTR_TYPE;
3336 }
3337 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3338 return ret;
3339}
3340
3341static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3342 uint32_t *bitmap, uint32_t *type)
3343{
3344 __be32 *p;
3345
3346 *type = 0;
3347 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3348 return -EIO;
3349 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3350 p = xdr_inline_decode(xdr, 4);
3351 if (unlikely(!p))
3352 return -EIO;
3353 *type = be32_to_cpup(p);
3354 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3355 }
3356 dprintk("%s: expire type=0x%x\n", __func__, *type);
3357 return 0;
3358}
3359
3360static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3361{
3362 __be32 *p;
3363 int ret = 0;
3364
3365 *change = 0;
3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3367 return -EIO;
3368 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3369 p = xdr_inline_decode(xdr, 8);
3370 if (unlikely(!p))
3371 return -EIO;
3372 xdr_decode_hyper(p, change);
3373 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3374 ret = NFS_ATTR_FATTR_CHANGE;
3375 }
3376 dprintk("%s: change attribute=%Lu\n", __func__,
3377 (unsigned long long)*change);
3378 return ret;
3379}
3380
3381static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3382{
3383 __be32 *p;
3384 int ret = 0;
3385
3386 *size = 0;
3387 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3388 return -EIO;
3389 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3390 p = xdr_inline_decode(xdr, 8);
3391 if (unlikely(!p))
3392 return -EIO;
3393 xdr_decode_hyper(p, size);
3394 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3395 ret = NFS_ATTR_FATTR_SIZE;
3396 }
3397 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3398 return ret;
3399}
3400
3401static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3402{
3403 __be32 *p;
3404
3405 *res = 0;
3406 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3407 return -EIO;
3408 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3409 p = xdr_inline_decode(xdr, 4);
3410 if (unlikely(!p))
3411 return -EIO;
3412 *res = be32_to_cpup(p);
3413 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3414 }
3415 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3416 return 0;
3417}
3418
3419static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3420{
3421 __be32 *p;
3422
3423 *res = 0;
3424 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3425 return -EIO;
3426 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3427 p = xdr_inline_decode(xdr, 4);
3428 if (unlikely(!p))
3429 return -EIO;
3430 *res = be32_to_cpup(p);
3431 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3432 }
3433 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3434 return 0;
3435}
3436
3437static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3438{
3439 __be32 *p;
3440 int ret = 0;
3441
3442 fsid->major = 0;
3443 fsid->minor = 0;
3444 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3445 return -EIO;
3446 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3447 p = xdr_inline_decode(xdr, 16);
3448 if (unlikely(!p))
3449 return -EIO;
3450 p = xdr_decode_hyper(p, &fsid->major);
3451 xdr_decode_hyper(p, &fsid->minor);
3452 bitmap[0] &= ~FATTR4_WORD0_FSID;
3453 ret = NFS_ATTR_FATTR_FSID;
3454 }
3455 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3456 (unsigned long long)fsid->major,
3457 (unsigned long long)fsid->minor);
3458 return ret;
3459}
3460
3461static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3462{
3463 __be32 *p;
3464
3465 *res = 60;
3466 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3467 return -EIO;
3468 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3469 p = xdr_inline_decode(xdr, 4);
3470 if (unlikely(!p))
3471 return -EIO;
3472 *res = be32_to_cpup(p);
3473 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3474 }
3475 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
3476 return 0;
3477}
3478
3479static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3480{
3481 __be32 *p;
3482
3483 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3484 return -EIO;
3485 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3486 p = xdr_inline_decode(xdr, 4);
3487 if (unlikely(!p))
3488 return -EIO;
3489 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3490 *res = -be32_to_cpup(p);
3491 }
3492 return 0;
3493}
3494
3495static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3496 uint32_t *bitmap, uint32_t *bitmask)
3497{
3498 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3499 int ret;
3500 ret = decode_attr_bitmap(xdr, bitmask);
3501 if (unlikely(ret < 0))
3502 return ret;
3503 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3504 } else
3505 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3506 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3507 bitmask[0], bitmask[1], bitmask[2]);
3508 return 0;
3509}
3510
3511static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3512{
3513 __be32 *p;
3514 u32 len;
3515
3516 if (fh != NULL)
3517 memset(fh, 0, sizeof(*fh));
3518
3519 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3520 return -EIO;
3521 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3522 p = xdr_inline_decode(xdr, 4);
3523 if (unlikely(!p))
3524 return -EIO;
3525 len = be32_to_cpup(p);
3526 if (len > NFS4_FHSIZE || len == 0) {
3527 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR,
3528 NFS4ERR_BADHANDLE);
3529 return -EREMOTEIO;
3530 }
3531 p = xdr_inline_decode(xdr, len);
3532 if (unlikely(!p))
3533 return -EIO;
3534 if (fh != NULL) {
3535 memcpy(fh->data, p, len);
3536 fh->size = len;
3537 }
3538 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3539 }
3540 return 0;
3541}
3542
3543static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3544{
3545 __be32 *p;
3546
3547 *res = 0;
3548 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3549 return -EIO;
3550 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3551 p = xdr_inline_decode(xdr, 4);
3552 if (unlikely(!p))
3553 return -EIO;
3554 *res = be32_to_cpup(p);
3555 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3556 }
3557 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3558 return 0;
3559}
3560
3561static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3562{
3563 __be32 *p;
3564
3565 *res = 0;
3566 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U)))
3567 return -EIO;
3568 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) {
3569 p = xdr_inline_decode(xdr, 4);
3570 if (unlikely(!p))
3571 return -EIO;
3572 *res = be32_to_cpup(p);
3573 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE;
3574 }
3575 dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true");
3576 return 0;
3577}
3578
3579static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3580{
3581 __be32 *p;
3582
3583 *res = 0;
3584 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U)))
3585 return -EIO;
3586 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) {
3587 p = xdr_inline_decode(xdr, 4);
3588 if (unlikely(!p))
3589 return -EIO;
3590 *res = be32_to_cpup(p);
3591 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING;
3592 }
3593 dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true");
3594 return 0;
3595}
3596
3597static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3598{
3599 __be32 *p;
3600 int ret = 0;
3601
3602 *fileid = 0;
3603 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3604 return -EIO;
3605 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3606 p = xdr_inline_decode(xdr, 8);
3607 if (unlikely(!p))
3608 return -EIO;
3609 xdr_decode_hyper(p, fileid);
3610 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3611 ret = NFS_ATTR_FATTR_FILEID;
3612 }
3613 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3614 return ret;
3615}
3616
3617static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3618{
3619 __be32 *p;
3620 int ret = 0;
3621
3622 *fileid = 0;
3623 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3624 return -EIO;
3625 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3626 p = xdr_inline_decode(xdr, 8);
3627 if (unlikely(!p))
3628 return -EIO;
3629 xdr_decode_hyper(p, fileid);
3630 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3631 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3632 }
3633 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3634 return ret;
3635}
3636
3637static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3638{
3639 __be32 *p;
3640 int status = 0;
3641
3642 *res = 0;
3643 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3644 return -EIO;
3645 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3646 p = xdr_inline_decode(xdr, 8);
3647 if (unlikely(!p))
3648 return -EIO;
3649 xdr_decode_hyper(p, res);
3650 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3651 }
3652 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3653 return status;
3654}
3655
3656static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3657{
3658 __be32 *p;
3659 int status = 0;
3660
3661 *res = 0;
3662 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3663 return -EIO;
3664 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3665 p = xdr_inline_decode(xdr, 8);
3666 if (unlikely(!p))
3667 return -EIO;
3668 xdr_decode_hyper(p, res);
3669 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3670 }
3671 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3672 return status;
3673}
3674
3675static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3676{
3677 __be32 *p;
3678 int status = 0;
3679
3680 *res = 0;
3681 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3682 return -EIO;
3683 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3684 p = xdr_inline_decode(xdr, 8);
3685 if (unlikely(!p))
3686 return -EIO;
3687 xdr_decode_hyper(p, res);
3688 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3689 }
3690 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3691 return status;
3692}
3693
3694static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3695{
3696 u32 n;
3697 __be32 *p;
3698 int status = 0;
3699
3700 p = xdr_inline_decode(xdr, 4);
3701 if (unlikely(!p))
3702 return -EIO;
3703 n = be32_to_cpup(p);
3704 if (n == 0)
3705 goto root_path;
3706 dprintk("pathname4: ");
3707 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3708 dprintk("cannot parse %d components in path\n", n);
3709 goto out_eio;
3710 }
3711 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3712 struct nfs4_string *component = &path->components[path->ncomponents];
3713 status = decode_opaque_inline(xdr, &component->len, &component->data);
3714 if (unlikely(status != 0))
3715 goto out_eio;
3716 ifdebug (XDR)
3717 pr_cont("%s%.*s ",
3718 (path->ncomponents != n ? "/ " : ""),
3719 component->len, component->data);
3720 }
3721out:
3722 return status;
3723root_path:
3724/* a root pathname is sent as a zero component4 */
3725 path->ncomponents = 1;
3726 path->components[0].len=0;
3727 path->components[0].data=NULL;
3728 dprintk("pathname4: /\n");
3729 goto out;
3730out_eio:
3731 dprintk(" status %d", status);
3732 status = -EIO;
3733 goto out;
3734}
3735
3736static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3737{
3738 int n;
3739 __be32 *p;
3740 int status = -EIO;
3741
3742 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3743 goto out;
3744 status = 0;
3745 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3746 goto out;
3747 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3748 status = -EIO;
3749 /* Ignore borken servers that return unrequested attrs */
3750 if (unlikely(res == NULL))
3751 goto out;
3752 dprintk("%s: fsroot:\n", __func__);
3753 status = decode_pathname(xdr, &res->fs_path);
3754 if (unlikely(status != 0))
3755 goto out;
3756 p = xdr_inline_decode(xdr, 4);
3757 if (unlikely(!p))
3758 goto out_eio;
3759 n = be32_to_cpup(p);
3760 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3761 u32 m;
3762 struct nfs4_fs_location *loc;
3763
3764 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3765 break;
3766 loc = &res->locations[res->nlocations];
3767 p = xdr_inline_decode(xdr, 4);
3768 if (unlikely(!p))
3769 goto out_eio;
3770 m = be32_to_cpup(p);
3771
3772 dprintk("%s: servers:\n", __func__);
3773 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3774 struct nfs4_string *server;
3775
3776 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3777 unsigned int i;
3778 dprintk("%s: using first %u of %u servers "
3779 "returned for location %u\n",
3780 __func__,
3781 NFS4_FS_LOCATION_MAXSERVERS,
3782 m, res->nlocations);
3783 for (i = loc->nservers; i < m; i++) {
3784 unsigned int len;
3785 char *data;
3786 status = decode_opaque_inline(xdr, &len, &data);
3787 if (unlikely(status != 0))
3788 goto out_eio;
3789 }
3790 break;
3791 }
3792 server = &loc->servers[loc->nservers];
3793 status = decode_opaque_inline(xdr, &server->len, &server->data);
3794 if (unlikely(status != 0))
3795 goto out_eio;
3796 dprintk("%s ", server->data);
3797 }
3798 status = decode_pathname(xdr, &loc->rootpath);
3799 if (unlikely(status != 0))
3800 goto out_eio;
3801 }
3802 if (res->nlocations != 0)
3803 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3804out:
3805 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3806 return status;
3807out_eio:
3808 status = -EIO;
3809 goto out;
3810}
3811
3812static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3813{
3814 __be32 *p;
3815 int status = 0;
3816
3817 *res = 0;
3818 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3819 return -EIO;
3820 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3821 p = xdr_inline_decode(xdr, 8);
3822 if (unlikely(!p))
3823 return -EIO;
3824 xdr_decode_hyper(p, res);
3825 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3826 }
3827 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3828 return status;
3829}
3830
3831static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3832{
3833 __be32 *p;
3834 int status = 0;
3835
3836 *maxlink = 1;
3837 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3838 return -EIO;
3839 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3840 p = xdr_inline_decode(xdr, 4);
3841 if (unlikely(!p))
3842 return -EIO;
3843 *maxlink = be32_to_cpup(p);
3844 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3845 }
3846 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3847 return status;
3848}
3849
3850static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3851{
3852 __be32 *p;
3853 int status = 0;
3854
3855 *maxname = 1024;
3856 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3857 return -EIO;
3858 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3859 p = xdr_inline_decode(xdr, 4);
3860 if (unlikely(!p))
3861 return -EIO;
3862 *maxname = be32_to_cpup(p);
3863 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3864 }
3865 dprintk("%s: maxname=%u\n", __func__, *maxname);
3866 return status;
3867}
3868
3869static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3870{
3871 __be32 *p;
3872 int status = 0;
3873
3874 *res = 1024;
3875 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3876 return -EIO;
3877 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3878 uint64_t maxread;
3879 p = xdr_inline_decode(xdr, 8);
3880 if (unlikely(!p))
3881 return -EIO;
3882 xdr_decode_hyper(p, &maxread);
3883 if (maxread > 0x7FFFFFFF)
3884 maxread = 0x7FFFFFFF;
3885 *res = (uint32_t)maxread;
3886 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3887 }
3888 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3889 return status;
3890}
3891
3892static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3893{
3894 __be32 *p;
3895 int status = 0;
3896
3897 *res = 1024;
3898 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3899 return -EIO;
3900 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3901 uint64_t maxwrite;
3902 p = xdr_inline_decode(xdr, 8);
3903 if (unlikely(!p))
3904 return -EIO;
3905 xdr_decode_hyper(p, &maxwrite);
3906 if (maxwrite > 0x7FFFFFFF)
3907 maxwrite = 0x7FFFFFFF;
3908 *res = (uint32_t)maxwrite;
3909 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3910 }
3911 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3912 return status;
3913}
3914
3915static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3916{
3917 uint32_t tmp;
3918 __be32 *p;
3919 int ret = 0;
3920
3921 *mode = 0;
3922 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3923 return -EIO;
3924 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3925 p = xdr_inline_decode(xdr, 4);
3926 if (unlikely(!p))
3927 return -EIO;
3928 tmp = be32_to_cpup(p);
3929 *mode = tmp & ~S_IFMT;
3930 bitmap[1] &= ~FATTR4_WORD1_MODE;
3931 ret = NFS_ATTR_FATTR_MODE;
3932 }
3933 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3934 return ret;
3935}
3936
3937static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3938{
3939 __be32 *p;
3940 int ret = 0;
3941
3942 *nlink = 1;
3943 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3944 return -EIO;
3945 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3946 p = xdr_inline_decode(xdr, 4);
3947 if (unlikely(!p))
3948 return -EIO;
3949 *nlink = be32_to_cpup(p);
3950 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3951 ret = NFS_ATTR_FATTR_NLINK;
3952 }
3953 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3954 return ret;
3955}
3956
3957static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3958 struct nfs4_string *name, gfp_t gfp_flags)
3959{
3960 ssize_t ret;
3961
3962 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3963 XDR_MAX_NETOBJ, gfp_flags);
3964 name->len = 0;
3965 if (ret > 0)
3966 name->len = ret;
3967 return ret;
3968}
3969
3970static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3971 const struct nfs_server *server, kuid_t *uid,
3972 struct nfs4_string *owner_name)
3973{
3974 ssize_t len;
3975 char *p;
3976
3977 *uid = make_kuid(&init_user_ns, -2);
3978 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3979 return -EIO;
3980 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3981 return 0;
3982 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3983
3984 if (owner_name != NULL) {
3985 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3986 if (len <= 0)
3987 goto out;
3988 dprintk("%s: name=%s\n", __func__, owner_name->data);
3989 return NFS_ATTR_FATTR_OWNER_NAME;
3990 } else {
3991 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3992 XDR_MAX_NETOBJ);
3993 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3994 goto out;
3995 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3996 return NFS_ATTR_FATTR_OWNER;
3997 }
3998out:
3999 if (len == -EBADMSG)
4000 return -EIO;
4001 return 0;
4002}
4003
4004static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
4005 const struct nfs_server *server, kgid_t *gid,
4006 struct nfs4_string *group_name)
4007{
4008 ssize_t len;
4009 char *p;
4010
4011 *gid = make_kgid(&init_user_ns, -2);
4012 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
4013 return -EIO;
4014 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
4015 return 0;
4016 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
4017
4018 if (group_name != NULL) {
4019 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
4020 if (len <= 0)
4021 goto out;
4022 dprintk("%s: name=%s\n", __func__, group_name->data);
4023 return NFS_ATTR_FATTR_GROUP_NAME;
4024 } else {
4025 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
4026 XDR_MAX_NETOBJ);
4027 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
4028 goto out;
4029 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
4030 return NFS_ATTR_FATTR_GROUP;
4031 }
4032out:
4033 if (len == -EBADMSG)
4034 return -EIO;
4035 return 0;
4036}
4037
4038static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
4039{
4040 uint32_t major = 0, minor = 0;
4041 __be32 *p;
4042 int ret = 0;
4043
4044 *rdev = MKDEV(0,0);
4045 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
4046 return -EIO;
4047 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
4048 dev_t tmp;
4049
4050 p = xdr_inline_decode(xdr, 8);
4051 if (unlikely(!p))
4052 return -EIO;
4053 major = be32_to_cpup(p++);
4054 minor = be32_to_cpup(p);
4055 tmp = MKDEV(major, minor);
4056 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
4057 *rdev = tmp;
4058 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4059 ret = NFS_ATTR_FATTR_RDEV;
4060 }
4061 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4062 return ret;
4063}
4064
4065static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4066{
4067 __be32 *p;
4068 int status = 0;
4069
4070 *res = 0;
4071 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4072 return -EIO;
4073 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4074 p = xdr_inline_decode(xdr, 8);
4075 if (unlikely(!p))
4076 return -EIO;
4077 xdr_decode_hyper(p, res);
4078 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4079 }
4080 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4081 return status;
4082}
4083
4084static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4085{
4086 __be32 *p;
4087 int status = 0;
4088
4089 *res = 0;
4090 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4091 return -EIO;
4092 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4093 p = xdr_inline_decode(xdr, 8);
4094 if (unlikely(!p))
4095 return -EIO;
4096 xdr_decode_hyper(p, res);
4097 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4098 }
4099 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4100 return status;
4101}
4102
4103static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4104{
4105 __be32 *p;
4106 int status = 0;
4107
4108 *res = 0;
4109 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4110 return -EIO;
4111 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4112 p = xdr_inline_decode(xdr, 8);
4113 if (unlikely(!p))
4114 return -EIO;
4115 xdr_decode_hyper(p, res);
4116 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4117 }
4118 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4119 return status;
4120}
4121
4122static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4123{
4124 __be32 *p;
4125 int ret = 0;
4126
4127 *used = 0;
4128 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4129 return -EIO;
4130 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4131 p = xdr_inline_decode(xdr, 8);
4132 if (unlikely(!p))
4133 return -EIO;
4134 xdr_decode_hyper(p, used);
4135 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4136 ret = NFS_ATTR_FATTR_SPACE_USED;
4137 }
4138 dprintk("%s: space used=%Lu\n", __func__,
4139 (unsigned long long)*used);
4140 return ret;
4141}
4142
4143static __be32 *
4144xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4145{
4146 __u64 sec;
4147
4148 p = xdr_decode_hyper(p, &sec);
4149 t-> tv_sec = sec;
4150 t->tv_nsec = be32_to_cpup(p++);
4151 return p;
4152}
4153
4154static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4155{
4156 __be32 *p;
4157
4158 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4159 if (unlikely(!p))
4160 return -EIO;
4161 xdr_decode_nfstime4(p, time);
4162 return 0;
4163}
4164
4165static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4166{
4167 int status = 0;
4168
4169 time->tv_sec = 0;
4170 time->tv_nsec = 0;
4171 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4172 return -EIO;
4173 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4174 status = decode_attr_time(xdr, time);
4175 if (status == 0)
4176 status = NFS_ATTR_FATTR_ATIME;
4177 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4178 }
4179 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4180 return status;
4181}
4182
4183static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4184{
4185 int status = 0;
4186
4187 time->tv_sec = 0;
4188 time->tv_nsec = 0;
4189 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4190 return -EIO;
4191 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4192 status = decode_attr_time(xdr, time);
4193 if (status == 0)
4194 status = NFS_ATTR_FATTR_CTIME;
4195 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4196 }
4197 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4198 return status;
4199}
4200
4201static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4202 struct timespec64 *time)
4203{
4204 int status = 0;
4205
4206 time->tv_sec = 0;
4207 time->tv_nsec = 0;
4208 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4209 return -EIO;
4210 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4211 status = decode_attr_time(xdr, time);
4212 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4213 }
4214 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4215 time->tv_nsec);
4216 return status;
4217}
4218
4219static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4220 struct nfs4_label *label)
4221{
4222 uint32_t pi = 0;
4223 uint32_t lfs = 0;
4224 __u32 len;
4225 __be32 *p;
4226 int status = 0;
4227
4228 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4229 return -EIO;
4230 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4231 p = xdr_inline_decode(xdr, 4);
4232 if (unlikely(!p))
4233 return -EIO;
4234 lfs = be32_to_cpup(p++);
4235 p = xdr_inline_decode(xdr, 4);
4236 if (unlikely(!p))
4237 return -EIO;
4238 pi = be32_to_cpup(p++);
4239 p = xdr_inline_decode(xdr, 4);
4240 if (unlikely(!p))
4241 return -EIO;
4242 len = be32_to_cpup(p++);
4243 p = xdr_inline_decode(xdr, len);
4244 if (unlikely(!p))
4245 return -EIO;
4246 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4247 if (len < NFS4_MAXLABELLEN) {
4248 if (label && label->len) {
4249 if (label->len < len)
4250 return -ERANGE;
4251 memcpy(label->label, p, len);
4252 label->len = len;
4253 label->pi = pi;
4254 label->lfs = lfs;
4255 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4256 }
4257 } else
4258 printk(KERN_WARNING "%s: label too long (%u)!\n",
4259 __func__, len);
4260 if (label && label->label)
4261 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n",
4262 __func__, label->len, (char *)label->label,
4263 label->len, label->pi, label->lfs);
4264 }
4265 return status;
4266}
4267
4268static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4269{
4270 int status = 0;
4271
4272 time->tv_sec = 0;
4273 time->tv_nsec = 0;
4274 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4275 return -EIO;
4276 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4277 status = decode_attr_time(xdr, time);
4278 if (status == 0)
4279 status = NFS_ATTR_FATTR_MTIME;
4280 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4281 }
4282 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4283 return status;
4284}
4285
4286static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4287 uint32_t *res)
4288{
4289 __be32 *p;
4290
4291 *res = 0;
4292 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4293 return -EIO;
4294 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4295 p = xdr_inline_decode(xdr, 4);
4296 if (unlikely(!p))
4297 return -EIO;
4298 *res = be32_to_cpup(p);
4299 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4300 }
4301 dprintk("%s: XATTR support=%s\n", __func__,
4302 *res == 0 ? "false" : "true");
4303 return 0;
4304}
4305
4306static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4307{
4308 unsigned int attrwords = XDR_QUADLEN(attrlen);
4309 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4310
4311 if (unlikely(attrwords != nwords)) {
4312 dprintk("%s: server returned incorrect attribute length: "
4313 "%u %c %u\n",
4314 __func__,
4315 attrwords << 2,
4316 (attrwords < nwords) ? '<' : '>',
4317 nwords << 2);
4318 return -EIO;
4319 }
4320 return 0;
4321}
4322
4323static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4324{
4325 __be32 *p;
4326
4327 p = xdr_inline_decode(xdr, 20);
4328 if (unlikely(!p))
4329 return -EIO;
4330 cinfo->atomic = be32_to_cpup(p++);
4331 p = xdr_decode_hyper(p, &cinfo->before);
4332 xdr_decode_hyper(p, &cinfo->after);
4333 return 0;
4334}
4335
4336static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4337{
4338 __be32 *p;
4339 uint32_t supp, acc;
4340 int status;
4341
4342 status = decode_op_hdr(xdr, OP_ACCESS);
4343 if (status)
4344 return status;
4345 p = xdr_inline_decode(xdr, 8);
4346 if (unlikely(!p))
4347 return -EIO;
4348 supp = be32_to_cpup(p++);
4349 acc = be32_to_cpup(p);
4350 *supported = supp;
4351 *access = acc;
4352 return 0;
4353}
4354
4355static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4356{
4357 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4358 if (unlikely(ret < 0))
4359 return -EIO;
4360 return 0;
4361}
4362
4363static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4364{
4365 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4366}
4367
4368static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4369{
4370 stateid->type = NFS4_OPEN_STATEID_TYPE;
4371 return decode_stateid(xdr, stateid);
4372}
4373
4374static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4375{
4376 stateid->type = NFS4_LOCK_STATEID_TYPE;
4377 return decode_stateid(xdr, stateid);
4378}
4379
4380static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4381{
4382 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4383 return decode_stateid(xdr, stateid);
4384}
4385
4386static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4387{
4388 nfs4_stateid dummy;
4389
4390 nfs4_stateid_copy(stateid, &invalid_stateid);
4391 return decode_stateid(xdr, &dummy);
4392}
4393
4394static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4395{
4396 int status;
4397
4398 status = decode_op_hdr(xdr, OP_CLOSE);
4399 if (status != -EIO)
4400 nfs_increment_open_seqid(status, res->seqid);
4401 if (!status)
4402 status = decode_invalid_stateid(xdr, &res->stateid);
4403 return status;
4404}
4405
4406static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4407{
4408 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4409}
4410
4411static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4412{
4413 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4414}
4415
4416static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4417{
4418 struct nfs_writeverf *verf = res->verf;
4419 int status;
4420
4421 status = decode_op_hdr(xdr, OP_COMMIT);
4422 if (!status)
4423 status = decode_write_verifier(xdr, &verf->verifier);
4424 if (!status)
4425 verf->committed = NFS_FILE_SYNC;
4426 return status;
4427}
4428
4429static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4430{
4431 __be32 *p;
4432 uint32_t bmlen;
4433 int status;
4434
4435 status = decode_op_hdr(xdr, OP_CREATE);
4436 if (status)
4437 return status;
4438 if ((status = decode_change_info(xdr, cinfo)))
4439 return status;
4440 p = xdr_inline_decode(xdr, 4);
4441 if (unlikely(!p))
4442 return -EIO;
4443 bmlen = be32_to_cpup(p);
4444 p = xdr_inline_decode(xdr, bmlen << 2);
4445 if (likely(p))
4446 return 0;
4447 return -EIO;
4448}
4449
4450static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4451{
4452 unsigned int savep;
4453 uint32_t attrlen, bitmap[3] = {0};
4454 int status;
4455
4456 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4457 goto xdr_error;
4458 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4459 goto xdr_error;
4460 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4461 goto xdr_error;
4462 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4463 goto xdr_error;
4464 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4465 &res->fh_expire_type)) != 0)
4466 goto xdr_error;
4467 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4468 goto xdr_error;
4469 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4470 goto xdr_error;
4471 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4472 goto xdr_error;
4473 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0)
4474 goto xdr_error;
4475 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0)
4476 goto xdr_error;
4477 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4478 res->exclcreat_bitmask)) != 0)
4479 goto xdr_error;
4480 status = verify_attr_len(xdr, savep, attrlen);
4481xdr_error:
4482 dprintk("%s: xdr returned %d!\n", __func__, -status);
4483 return status;
4484}
4485
4486static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4487{
4488 unsigned int savep;
4489 uint32_t attrlen, bitmap[3] = {0};
4490 int status;
4491
4492 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4493 goto xdr_error;
4494 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4495 goto xdr_error;
4496 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4497 goto xdr_error;
4498
4499 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4500 goto xdr_error;
4501 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4502 goto xdr_error;
4503 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4504 goto xdr_error;
4505
4506 status = -EIO;
4507 if (unlikely(bitmap[0]))
4508 goto xdr_error;
4509
4510 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4511 goto xdr_error;
4512 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4513 goto xdr_error;
4514 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4515 goto xdr_error;
4516
4517 status = verify_attr_len(xdr, savep, attrlen);
4518xdr_error:
4519 dprintk("%s: xdr returned %d!\n", __func__, -status);
4520 return status;
4521}
4522
4523static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4524{
4525 unsigned int savep;
4526 uint32_t attrlen, bitmap[3] = {0};
4527 int status;
4528
4529 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4530 goto xdr_error;
4531 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4532 goto xdr_error;
4533 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4534 goto xdr_error;
4535
4536 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4537 goto xdr_error;
4538 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4539 goto xdr_error;
4540
4541 status = verify_attr_len(xdr, savep, attrlen);
4542xdr_error:
4543 dprintk("%s: xdr returned %d!\n", __func__, -status);
4544 return status;
4545}
4546
4547static int decode_threshold_hint(struct xdr_stream *xdr,
4548 uint32_t *bitmap,
4549 uint64_t *res,
4550 uint32_t hint_bit)
4551{
4552 __be32 *p;
4553
4554 *res = 0;
4555 if (likely(bitmap[0] & hint_bit)) {
4556 p = xdr_inline_decode(xdr, 8);
4557 if (unlikely(!p))
4558 return -EIO;
4559 xdr_decode_hyper(p, res);
4560 }
4561 return 0;
4562}
4563
4564static int decode_first_threshold_item4(struct xdr_stream *xdr,
4565 struct nfs4_threshold *res)
4566{
4567 __be32 *p;
4568 unsigned int savep;
4569 uint32_t bitmap[3] = {0,}, attrlen;
4570 int status;
4571
4572 /* layout type */
4573 p = xdr_inline_decode(xdr, 4);
4574 if (unlikely(!p))
4575 return -EIO;
4576 res->l_type = be32_to_cpup(p);
4577
4578 /* thi_hintset bitmap */
4579 status = decode_attr_bitmap(xdr, bitmap);
4580 if (status < 0)
4581 goto xdr_error;
4582
4583 /* thi_hintlist length */
4584 status = decode_attr_length(xdr, &attrlen, &savep);
4585 if (status < 0)
4586 goto xdr_error;
4587 /* thi_hintlist */
4588 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4589 if (status < 0)
4590 goto xdr_error;
4591 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4592 if (status < 0)
4593 goto xdr_error;
4594 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4595 THRESHOLD_RD_IO);
4596 if (status < 0)
4597 goto xdr_error;
4598 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4599 THRESHOLD_WR_IO);
4600 if (status < 0)
4601 goto xdr_error;
4602
4603 status = verify_attr_len(xdr, savep, attrlen);
4604 res->bm = bitmap[0];
4605
4606 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4607 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4608 res->wr_io_sz);
4609xdr_error:
4610 dprintk("%s ret=%d!\n", __func__, status);
4611 return status;
4612}
4613
4614/*
4615 * Thresholds on pNFS direct I/O vrs MDS I/O
4616 */
4617static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4618 uint32_t *bitmap,
4619 struct nfs4_threshold *res)
4620{
4621 __be32 *p;
4622 int status = 0;
4623 uint32_t num;
4624
4625 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4626 return -EIO;
4627 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4628 /* Did the server return an unrequested attribute? */
4629 if (unlikely(res == NULL))
4630 return -EREMOTEIO;
4631 p = xdr_inline_decode(xdr, 4);
4632 if (unlikely(!p))
4633 return -EIO;
4634 num = be32_to_cpup(p);
4635 if (num == 0)
4636 return 0;
4637 if (num > 1)
4638 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4639 "drivers per filesystem not supported\n",
4640 __func__);
4641
4642 status = decode_first_threshold_item4(xdr, res);
4643 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4644 }
4645 return status;
4646}
4647
4648static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4649 struct nfs_fattr *fattr, struct nfs_fh *fh,
4650 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server)
4651{
4652 int status;
4653 umode_t fmode = 0;
4654 uint32_t type;
4655 int32_t err;
4656
4657 status = decode_attr_type(xdr, bitmap, &type);
4658 if (status < 0)
4659 goto xdr_error;
4660 fattr->mode = 0;
4661 if (status != 0) {
4662 fattr->mode |= nfs_type2fmt[type];
4663 fattr->valid |= status;
4664 }
4665
4666 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4667 if (status < 0)
4668 goto xdr_error;
4669 fattr->valid |= status;
4670
4671 status = decode_attr_size(xdr, bitmap, &fattr->size);
4672 if (status < 0)
4673 goto xdr_error;
4674 fattr->valid |= status;
4675
4676 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4677 if (status < 0)
4678 goto xdr_error;
4679 fattr->valid |= status;
4680
4681 err = 0;
4682 status = decode_attr_error(xdr, bitmap, &err);
4683 if (status < 0)
4684 goto xdr_error;
4685
4686 status = decode_attr_filehandle(xdr, bitmap, fh);
4687 if (status < 0)
4688 goto xdr_error;
4689
4690 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4691 if (status < 0)
4692 goto xdr_error;
4693 fattr->valid |= status;
4694
4695 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4696 if (status < 0)
4697 goto xdr_error;
4698 fattr->valid |= status;
4699
4700 status = -EIO;
4701 if (unlikely(bitmap[0]))
4702 goto xdr_error;
4703
4704 status = decode_attr_mode(xdr, bitmap, &fmode);
4705 if (status < 0)
4706 goto xdr_error;
4707 if (status != 0) {
4708 fattr->mode |= fmode;
4709 fattr->valid |= status;
4710 }
4711
4712 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4713 if (status < 0)
4714 goto xdr_error;
4715 fattr->valid |= status;
4716
4717 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4718 if (status < 0)
4719 goto xdr_error;
4720 fattr->valid |= status;
4721
4722 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4723 if (status < 0)
4724 goto xdr_error;
4725 fattr->valid |= status;
4726
4727 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4728 if (status < 0)
4729 goto xdr_error;
4730 fattr->valid |= status;
4731
4732 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4733 if (status < 0)
4734 goto xdr_error;
4735 fattr->valid |= status;
4736
4737 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4738 if (status < 0)
4739 goto xdr_error;
4740 fattr->valid |= status;
4741
4742 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4743 if (status < 0)
4744 goto xdr_error;
4745 fattr->valid |= status;
4746
4747 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4748 if (status < 0)
4749 goto xdr_error;
4750 fattr->valid |= status;
4751
4752 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4753 if (status < 0)
4754 goto xdr_error;
4755 fattr->valid |= status;
4756
4757 status = -EIO;
4758 if (unlikely(bitmap[1]))
4759 goto xdr_error;
4760
4761 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4762 if (status < 0)
4763 goto xdr_error;
4764
4765 status = decode_attr_security_label(xdr, bitmap, fattr->label);
4766 if (status < 0)
4767 goto xdr_error;
4768 fattr->valid |= status;
4769
4770xdr_error:
4771 dprintk("%s: xdr returned %d\n", __func__, -status);
4772 return status;
4773}
4774
4775static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4776 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4777 const struct nfs_server *server)
4778{
4779 unsigned int savep;
4780 uint32_t attrlen,
4781 bitmap[3] = {0};
4782 int status;
4783
4784 status = decode_op_hdr(xdr, OP_GETATTR);
4785 if (status < 0)
4786 goto xdr_error;
4787
4788 status = decode_attr_bitmap(xdr, bitmap);
4789 if (status < 0)
4790 goto xdr_error;
4791
4792 status = decode_attr_length(xdr, &attrlen, &savep);
4793 if (status < 0)
4794 goto xdr_error;
4795
4796 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4797 if (status < 0)
4798 goto xdr_error;
4799
4800 status = verify_attr_len(xdr, savep, attrlen);
4801xdr_error:
4802 dprintk("%s: xdr returned %d\n", __func__, -status);
4803 return status;
4804}
4805
4806static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4807 const struct nfs_server *server)
4808{
4809 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4810}
4811
4812/*
4813 * Decode potentially multiple layout types.
4814 */
4815static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4816 struct nfs_fsinfo *fsinfo)
4817{
4818 __be32 *p;
4819 uint32_t i;
4820
4821 p = xdr_inline_decode(xdr, 4);
4822 if (unlikely(!p))
4823 return -EIO;
4824 fsinfo->nlayouttypes = be32_to_cpup(p);
4825
4826 /* pNFS is not supported by the underlying file system */
4827 if (fsinfo->nlayouttypes == 0)
4828 return 0;
4829
4830 /* Decode and set first layout type, move xdr->p past unused types */
4831 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4832 if (unlikely(!p))
4833 return -EIO;
4834
4835 /* If we get too many, then just cap it at the max */
4836 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4837 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4838 __func__, fsinfo->nlayouttypes);
4839 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4840 }
4841
4842 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4843 fsinfo->layouttype[i] = be32_to_cpup(p++);
4844 return 0;
4845}
4846
4847/*
4848 * The type of file system exported.
4849 * Note we must ensure that layouttype is set in any non-error case.
4850 */
4851static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4852 struct nfs_fsinfo *fsinfo)
4853{
4854 int status = 0;
4855
4856 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4857 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4858 return -EIO;
4859 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4860 status = decode_pnfs_layout_types(xdr, fsinfo);
4861 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4862 }
4863 return status;
4864}
4865
4866/*
4867 * The prefered block size for layout directed io
4868 */
4869static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4870 uint32_t *res)
4871{
4872 __be32 *p;
4873
4874 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4875 *res = 0;
4876 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4877 p = xdr_inline_decode(xdr, 4);
4878 if (unlikely(!p))
4879 return -EIO;
4880 *res = be32_to_cpup(p);
4881 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4882 }
4883 return 0;
4884}
4885
4886/*
4887 * The granularity of a CLONE operation.
4888 */
4889static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4890 uint32_t *res)
4891{
4892 __be32 *p;
4893
4894 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4895 *res = 0;
4896 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4897 p = xdr_inline_decode(xdr, 4);
4898 if (unlikely(!p))
4899 return -EIO;
4900 *res = be32_to_cpup(p);
4901 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4902 }
4903 return 0;
4904}
4905
4906static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4907 uint32_t *bitmap,
4908 enum nfs4_change_attr_type *res)
4909{
4910 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4911
4912 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4913 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4914 if (xdr_stream_decode_u32(xdr, &tmp))
4915 return -EIO;
4916 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4917 }
4918
4919 switch(tmp) {
4920 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4921 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4922 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4923 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4924 *res = tmp;
4925 break;
4926 default:
4927 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4928 }
4929 return 0;
4930}
4931
4932static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4933{
4934 unsigned int savep;
4935 uint32_t attrlen, bitmap[3];
4936 int status;
4937
4938 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4939 goto xdr_error;
4940 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4941 goto xdr_error;
4942 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4943 goto xdr_error;
4944
4945 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4946
4947 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4948 goto xdr_error;
4949 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4950 goto xdr_error;
4951 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4952 goto xdr_error;
4953 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4954 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4955 goto xdr_error;
4956 fsinfo->wtpref = fsinfo->wtmax;
4957
4958 status = -EIO;
4959 if (unlikely(bitmap[0]))
4960 goto xdr_error;
4961
4962 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4963 if (status != 0)
4964 goto xdr_error;
4965 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4966 if (status != 0)
4967 goto xdr_error;
4968
4969 status = -EIO;
4970 if (unlikely(bitmap[1]))
4971 goto xdr_error;
4972
4973 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4974 if (status)
4975 goto xdr_error;
4976 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4977 if (status)
4978 goto xdr_error;
4979
4980 status = decode_attr_change_attr_type(xdr, bitmap,
4981 &fsinfo->change_attr_type);
4982 if (status)
4983 goto xdr_error;
4984
4985 status = decode_attr_xattrsupport(xdr, bitmap,
4986 &fsinfo->xattr_support);
4987 if (status)
4988 goto xdr_error;
4989
4990 status = verify_attr_len(xdr, savep, attrlen);
4991xdr_error:
4992 dprintk("%s: xdr returned %d!\n", __func__, -status);
4993 return status;
4994}
4995
4996static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4997{
4998 __be32 *p;
4999 uint32_t len;
5000 int status;
5001
5002 /* Zero handle first to allow comparisons */
5003 memset(fh, 0, sizeof(*fh));
5004
5005 status = decode_op_hdr(xdr, OP_GETFH);
5006 if (status)
5007 return status;
5008
5009 p = xdr_inline_decode(xdr, 4);
5010 if (unlikely(!p))
5011 return -EIO;
5012 len = be32_to_cpup(p);
5013 if (len > NFS4_FHSIZE || len == 0) {
5014 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE);
5015 return -EREMOTEIO;
5016 }
5017 fh->size = len;
5018 p = xdr_inline_decode(xdr, len);
5019 if (unlikely(!p))
5020 return -EIO;
5021 memcpy(fh->data, p, len);
5022 return 0;
5023}
5024
5025static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5026{
5027 int status;
5028
5029 status = decode_op_hdr(xdr, OP_LINK);
5030 if (status)
5031 return status;
5032 return decode_change_info(xdr, cinfo);
5033}
5034
5035/*
5036 * We create the owner, so we know a proper owner.id length is 4.
5037 */
5038static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
5039{
5040 uint64_t offset, length, clientid;
5041 __be32 *p;
5042 uint32_t namelen, type;
5043
5044 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
5045 if (unlikely(!p))
5046 return -EIO;
5047 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
5048 p = xdr_decode_hyper(p, &length);
5049 type = be32_to_cpup(p++); /* 4 byte read */
5050 if (fl != NULL) { /* manipulate file lock */
5051 fl->fl_start = (loff_t)offset;
5052 fl->fl_end = fl->fl_start + (loff_t)length - 1;
5053 if (length == ~(uint64_t)0)
5054 fl->fl_end = OFFSET_MAX;
5055 fl->fl_type = F_WRLCK;
5056 if (type & 1)
5057 fl->fl_type = F_RDLCK;
5058 fl->fl_pid = 0;
5059 }
5060 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5061 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5062 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5063 if (likely(!p))
5064 return -EIO;
5065 return -NFS4ERR_DENIED;
5066}
5067
5068static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5069{
5070 int status;
5071
5072 status = decode_op_hdr(xdr, OP_LOCK);
5073 if (status == -EIO)
5074 goto out;
5075 if (status == 0) {
5076 status = decode_lock_stateid(xdr, &res->stateid);
5077 if (unlikely(status))
5078 goto out;
5079 } else if (status == -NFS4ERR_DENIED)
5080 status = decode_lock_denied(xdr, NULL);
5081 if (res->open_seqid != NULL)
5082 nfs_increment_open_seqid(status, res->open_seqid);
5083 nfs_increment_lock_seqid(status, res->lock_seqid);
5084out:
5085 return status;
5086}
5087
5088static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5089{
5090 int status;
5091 status = decode_op_hdr(xdr, OP_LOCKT);
5092 if (status == -NFS4ERR_DENIED)
5093 return decode_lock_denied(xdr, res->denied);
5094 return status;
5095}
5096
5097static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5098{
5099 int status;
5100
5101 status = decode_op_hdr(xdr, OP_LOCKU);
5102 if (status != -EIO)
5103 nfs_increment_lock_seqid(status, res->seqid);
5104 if (status == 0)
5105 status = decode_lock_stateid(xdr, &res->stateid);
5106 return status;
5107}
5108
5109static int decode_release_lockowner(struct xdr_stream *xdr)
5110{
5111 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5112}
5113
5114static int decode_lookup(struct xdr_stream *xdr)
5115{
5116 return decode_op_hdr(xdr, OP_LOOKUP);
5117}
5118
5119static int decode_lookupp(struct xdr_stream *xdr)
5120{
5121 return decode_op_hdr(xdr, OP_LOOKUPP);
5122}
5123
5124/* This is too sick! */
5125static int decode_space_limit(struct xdr_stream *xdr,
5126 unsigned long *pagemod_limit)
5127{
5128 __be32 *p;
5129 uint32_t limit_type, nblocks, blocksize;
5130 u64 maxsize = 0;
5131
5132 p = xdr_inline_decode(xdr, 12);
5133 if (unlikely(!p))
5134 return -EIO;
5135 limit_type = be32_to_cpup(p++);
5136 switch (limit_type) {
5137 case NFS4_LIMIT_SIZE:
5138 xdr_decode_hyper(p, &maxsize);
5139 break;
5140 case NFS4_LIMIT_BLOCKS:
5141 nblocks = be32_to_cpup(p++);
5142 blocksize = be32_to_cpup(p);
5143 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5144 }
5145 maxsize >>= PAGE_SHIFT;
5146 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5147 return 0;
5148}
5149
5150static int decode_rw_delegation(struct xdr_stream *xdr,
5151 uint32_t delegation_type,
5152 struct nfs_openres *res)
5153{
5154 __be32 *p;
5155 int status;
5156
5157 status = decode_delegation_stateid(xdr, &res->delegation);
5158 if (unlikely(status))
5159 return status;
5160 p = xdr_inline_decode(xdr, 4);
5161 if (unlikely(!p))
5162 return -EIO;
5163 res->do_recall = be32_to_cpup(p);
5164
5165 switch (delegation_type) {
5166 case NFS4_OPEN_DELEGATE_READ:
5167 res->delegation_type = FMODE_READ;
5168 break;
5169 case NFS4_OPEN_DELEGATE_WRITE:
5170 res->delegation_type = FMODE_WRITE|FMODE_READ;
5171 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5172 return -EIO;
5173 }
5174 return decode_ace(xdr, NULL);
5175}
5176
5177static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5178{
5179 __be32 *p;
5180 uint32_t why_no_delegation;
5181
5182 p = xdr_inline_decode(xdr, 4);
5183 if (unlikely(!p))
5184 return -EIO;
5185 why_no_delegation = be32_to_cpup(p);
5186 switch (why_no_delegation) {
5187 case WND4_CONTENTION:
5188 case WND4_RESOURCE:
5189 xdr_inline_decode(xdr, 4);
5190 /* Ignore for now */
5191 }
5192 return 0;
5193}
5194
5195static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5196{
5197 __be32 *p;
5198 uint32_t delegation_type;
5199
5200 p = xdr_inline_decode(xdr, 4);
5201 if (unlikely(!p))
5202 return -EIO;
5203 delegation_type = be32_to_cpup(p);
5204 res->delegation_type = 0;
5205 switch (delegation_type) {
5206 case NFS4_OPEN_DELEGATE_NONE:
5207 return 0;
5208 case NFS4_OPEN_DELEGATE_READ:
5209 case NFS4_OPEN_DELEGATE_WRITE:
5210 return decode_rw_delegation(xdr, delegation_type, res);
5211 case NFS4_OPEN_DELEGATE_NONE_EXT:
5212 return decode_no_delegation(xdr, res);
5213 }
5214 return -EIO;
5215}
5216
5217static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5218{
5219 __be32 *p;
5220 uint32_t savewords, bmlen, i;
5221 int status;
5222
5223 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5224 return status;
5225 nfs_increment_open_seqid(status, res->seqid);
5226 if (status)
5227 return status;
5228 status = decode_open_stateid(xdr, &res->stateid);
5229 if (unlikely(status))
5230 return status;
5231
5232 decode_change_info(xdr, &res->cinfo);
5233
5234 p = xdr_inline_decode(xdr, 8);
5235 if (unlikely(!p))
5236 return -EIO;
5237 res->rflags = be32_to_cpup(p++);
5238 bmlen = be32_to_cpup(p);
5239 if (bmlen > 10)
5240 goto xdr_error;
5241
5242 p = xdr_inline_decode(xdr, bmlen << 2);
5243 if (unlikely(!p))
5244 return -EIO;
5245 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5246 for (i = 0; i < savewords; ++i)
5247 res->attrset[i] = be32_to_cpup(p++);
5248 for (; i < NFS4_BITMAP_SIZE; i++)
5249 res->attrset[i] = 0;
5250
5251 return decode_delegation(xdr, res);
5252xdr_error:
5253 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5254 return -EIO;
5255}
5256
5257static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5258{
5259 int status;
5260
5261 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5262 if (status != -EIO)
5263 nfs_increment_open_seqid(status, res->seqid);
5264 if (!status)
5265 status = decode_open_stateid(xdr, &res->stateid);
5266 return status;
5267}
5268
5269static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5270{
5271 int status;
5272
5273 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5274 if (status != -EIO)
5275 nfs_increment_open_seqid(status, res->seqid);
5276 if (!status)
5277 status = decode_open_stateid(xdr, &res->stateid);
5278 return status;
5279}
5280
5281static int decode_putfh(struct xdr_stream *xdr)
5282{
5283 return decode_op_hdr(xdr, OP_PUTFH);
5284}
5285
5286static int decode_putrootfh(struct xdr_stream *xdr)
5287{
5288 return decode_op_hdr(xdr, OP_PUTROOTFH);
5289}
5290
5291static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5292 struct nfs_pgio_res *res)
5293{
5294 __be32 *p;
5295 uint32_t count, eof, recvd;
5296 int status;
5297
5298 status = decode_op_hdr(xdr, OP_READ);
5299 if (status)
5300 return status;
5301 p = xdr_inline_decode(xdr, 8);
5302 if (unlikely(!p))
5303 return -EIO;
5304 eof = be32_to_cpup(p++);
5305 count = be32_to_cpup(p);
5306 recvd = xdr_read_pages(xdr, count);
5307 if (count > recvd) {
5308 dprintk("NFS: server cheating in read reply: "
5309 "count %u > recvd %u\n", count, recvd);
5310 count = recvd;
5311 eof = 0;
5312 }
5313 res->eof = eof;
5314 res->count = count;
5315 return 0;
5316}
5317
5318static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5319{
5320 int status;
5321 __be32 verf[2];
5322
5323 status = decode_op_hdr(xdr, OP_READDIR);
5324 if (!status)
5325 status = decode_verifier(xdr, readdir->verifier.data);
5326 if (unlikely(status))
5327 return status;
5328 memcpy(verf, readdir->verifier.data, sizeof(verf));
5329 dprintk("%s: verifier = %08x:%08x\n",
5330 __func__, verf[0], verf[1]);
5331 return xdr_read_pages(xdr, xdr->buf->page_len);
5332}
5333
5334static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5335{
5336 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5337 u32 len, recvd;
5338 __be32 *p;
5339 int status;
5340
5341 status = decode_op_hdr(xdr, OP_READLINK);
5342 if (status)
5343 return status;
5344
5345 /* Convert length of symlink */
5346 p = xdr_inline_decode(xdr, 4);
5347 if (unlikely(!p))
5348 return -EIO;
5349 len = be32_to_cpup(p);
5350 if (len >= rcvbuf->page_len || len <= 0) {
5351 dprintk("nfs: server returned giant symlink!\n");
5352 return -ENAMETOOLONG;
5353 }
5354 recvd = xdr_read_pages(xdr, len);
5355 if (recvd < len) {
5356 dprintk("NFS: server cheating in readlink reply: "
5357 "count %u > recvd %u\n", len, recvd);
5358 return -EIO;
5359 }
5360 /*
5361 * The XDR encode routine has set things up so that
5362 * the link text will be copied directly into the
5363 * buffer. We just have to do overflow-checking,
5364 * and null-terminate the text (the VFS expects
5365 * null-termination).
5366 */
5367 xdr_terminate_string(rcvbuf, len);
5368 return 0;
5369}
5370
5371static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5372{
5373 int status;
5374
5375 status = decode_op_hdr(xdr, OP_REMOVE);
5376 if (status)
5377 goto out;
5378 status = decode_change_info(xdr, cinfo);
5379out:
5380 return status;
5381}
5382
5383static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5384 struct nfs4_change_info *new_cinfo)
5385{
5386 int status;
5387
5388 status = decode_op_hdr(xdr, OP_RENAME);
5389 if (status)
5390 goto out;
5391 if ((status = decode_change_info(xdr, old_cinfo)))
5392 goto out;
5393 status = decode_change_info(xdr, new_cinfo);
5394out:
5395 return status;
5396}
5397
5398static int decode_renew(struct xdr_stream *xdr)
5399{
5400 return decode_op_hdr(xdr, OP_RENEW);
5401}
5402
5403static int
5404decode_restorefh(struct xdr_stream *xdr)
5405{
5406 return decode_op_hdr(xdr, OP_RESTOREFH);
5407}
5408
5409static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5410 struct nfs_getaclres *res, enum nfs4_acl_type type)
5411{
5412 unsigned int savep;
5413 uint32_t attrlen,
5414 bitmap[3] = {0};
5415 int status;
5416
5417 res->acl_len = 0;
5418 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5419 goto out;
5420
5421 xdr_enter_page(xdr, xdr->buf->page_len);
5422
5423 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5424 goto out;
5425 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5426 goto out;
5427
5428 switch (type) {
5429 default:
5430 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5431 return -EIO;
5432 if (!(bitmap[0] & FATTR4_WORD0_ACL))
5433 return -EOPNOTSUPP;
5434 break;
5435 case NFS4ACL_DACL:
5436 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U)))
5437 return -EIO;
5438 if (!(bitmap[1] & FATTR4_WORD1_DACL))
5439 return -EOPNOTSUPP;
5440 break;
5441 case NFS4ACL_SACL:
5442 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U)))
5443 return -EIO;
5444 if (!(bitmap[1] & FATTR4_WORD1_SACL))
5445 return -EOPNOTSUPP;
5446 }
5447
5448 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5449 * are stored with the acl data to handle the problem of
5450 * variable length bitmaps.*/
5451 res->acl_data_offset = xdr_page_pos(xdr);
5452 res->acl_len = attrlen;
5453
5454 /* Check for receive buffer overflow */
5455 if (res->acl_len > xdr_stream_remaining(xdr) ||
5456 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5457 res->acl_flags |= NFS4_ACL_TRUNC;
5458 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5459 attrlen, xdr_stream_remaining(xdr));
5460 }
5461out:
5462 return status;
5463}
5464
5465static int
5466decode_savefh(struct xdr_stream *xdr)
5467{
5468 return decode_op_hdr(xdr, OP_SAVEFH);
5469}
5470
5471static int decode_setattr(struct xdr_stream *xdr)
5472{
5473 int status;
5474
5475 status = decode_op_hdr(xdr, OP_SETATTR);
5476 if (status)
5477 return status;
5478 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5479 return 0;
5480 return -EIO;
5481}
5482
5483static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5484{
5485 __be32 *p;
5486 uint32_t opnum;
5487 int32_t nfserr;
5488
5489 p = xdr_inline_decode(xdr, 8);
5490 if (unlikely(!p))
5491 return -EIO;
5492 opnum = be32_to_cpup(p++);
5493 if (opnum != OP_SETCLIENTID) {
5494 dprintk("nfs: decode_setclientid: Server returned operation"
5495 " %d\n", opnum);
5496 return -EIO;
5497 }
5498 nfserr = be32_to_cpup(p);
5499 if (nfserr == NFS_OK) {
5500 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5501 if (unlikely(!p))
5502 return -EIO;
5503 p = xdr_decode_hyper(p, &res->clientid);
5504 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5505 } else if (nfserr == NFSERR_CLID_INUSE) {
5506 uint32_t len;
5507
5508 /* skip netid string */
5509 p = xdr_inline_decode(xdr, 4);
5510 if (unlikely(!p))
5511 return -EIO;
5512 len = be32_to_cpup(p);
5513 p = xdr_inline_decode(xdr, len);
5514 if (unlikely(!p))
5515 return -EIO;
5516
5517 /* skip uaddr string */
5518 p = xdr_inline_decode(xdr, 4);
5519 if (unlikely(!p))
5520 return -EIO;
5521 len = be32_to_cpup(p);
5522 p = xdr_inline_decode(xdr, len);
5523 if (unlikely(!p))
5524 return -EIO;
5525 return -NFSERR_CLID_INUSE;
5526 } else
5527 return nfs4_stat_to_errno(nfserr);
5528
5529 return 0;
5530}
5531
5532static int decode_setclientid_confirm(struct xdr_stream *xdr)
5533{
5534 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5535}
5536
5537static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5538{
5539 __be32 *p;
5540 int status;
5541
5542 status = decode_op_hdr(xdr, OP_WRITE);
5543 if (status)
5544 return status;
5545
5546 p = xdr_inline_decode(xdr, 8);
5547 if (unlikely(!p))
5548 return -EIO;
5549 res->count = be32_to_cpup(p++);
5550 res->verf->committed = be32_to_cpup(p++);
5551 return decode_write_verifier(xdr, &res->verf->verifier);
5552}
5553
5554static int decode_delegreturn(struct xdr_stream *xdr)
5555{
5556 return decode_op_hdr(xdr, OP_DELEGRETURN);
5557}
5558
5559static int decode_secinfo_gss(struct xdr_stream *xdr,
5560 struct nfs4_secinfo4 *flavor)
5561{
5562 u32 oid_len;
5563 __be32 *p;
5564
5565 p = xdr_inline_decode(xdr, 4);
5566 if (unlikely(!p))
5567 return -EIO;
5568 oid_len = be32_to_cpup(p);
5569 if (oid_len > GSS_OID_MAX_LEN)
5570 return -EINVAL;
5571
5572 p = xdr_inline_decode(xdr, oid_len);
5573 if (unlikely(!p))
5574 return -EIO;
5575 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5576 flavor->flavor_info.oid.len = oid_len;
5577
5578 p = xdr_inline_decode(xdr, 8);
5579 if (unlikely(!p))
5580 return -EIO;
5581 flavor->flavor_info.qop = be32_to_cpup(p++);
5582 flavor->flavor_info.service = be32_to_cpup(p);
5583
5584 return 0;
5585}
5586
5587static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5588{
5589 struct nfs4_secinfo4 *sec_flavor;
5590 unsigned int i, num_flavors;
5591 int status;
5592 __be32 *p;
5593
5594 p = xdr_inline_decode(xdr, 4);
5595 if (unlikely(!p))
5596 return -EIO;
5597
5598 res->flavors->num_flavors = 0;
5599 num_flavors = be32_to_cpup(p);
5600
5601 for (i = 0; i < num_flavors; i++) {
5602 sec_flavor = &res->flavors->flavors[i];
5603 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5604 break;
5605
5606 p = xdr_inline_decode(xdr, 4);
5607 if (unlikely(!p))
5608 return -EIO;
5609 sec_flavor->flavor = be32_to_cpup(p);
5610
5611 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5612 status = decode_secinfo_gss(xdr, sec_flavor);
5613 if (status)
5614 goto out;
5615 }
5616 res->flavors->num_flavors++;
5617 }
5618
5619 status = 0;
5620out:
5621 return status;
5622}
5623
5624static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5625{
5626 int status = decode_op_hdr(xdr, OP_SECINFO);
5627 if (status)
5628 return status;
5629 return decode_secinfo_common(xdr, res);
5630}
5631
5632#if defined(CONFIG_NFS_V4_1)
5633static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5634{
5635 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5636 if (status)
5637 return status;
5638 return decode_secinfo_common(xdr, res);
5639}
5640
5641static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5642{
5643 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words,
5644 ARRAY_SIZE(op_map->u.words)) < 0)
5645 return -EIO;
5646 return 0;
5647}
5648
5649static int decode_exchange_id(struct xdr_stream *xdr,
5650 struct nfs41_exchange_id_res *res)
5651{
5652 __be32 *p;
5653 uint32_t dummy;
5654 char *dummy_str;
5655 int status;
5656 uint32_t impl_id_count;
5657
5658 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5659 if (status)
5660 return status;
5661
5662 p = xdr_inline_decode(xdr, 8);
5663 if (unlikely(!p))
5664 return -EIO;
5665 xdr_decode_hyper(p, &res->clientid);
5666 p = xdr_inline_decode(xdr, 12);
5667 if (unlikely(!p))
5668 return -EIO;
5669 res->seqid = be32_to_cpup(p++);
5670 res->flags = be32_to_cpup(p++);
5671
5672 res->state_protect.how = be32_to_cpup(p);
5673 switch (res->state_protect.how) {
5674 case SP4_NONE:
5675 break;
5676 case SP4_MACH_CRED:
5677 status = decode_op_map(xdr, &res->state_protect.enforce);
5678 if (status)
5679 return status;
5680 status = decode_op_map(xdr, &res->state_protect.allow);
5681 if (status)
5682 return status;
5683 break;
5684 default:
5685 WARN_ON_ONCE(1);
5686 return -EIO;
5687 }
5688
5689 /* server_owner4.so_minor_id */
5690 p = xdr_inline_decode(xdr, 8);
5691 if (unlikely(!p))
5692 return -EIO;
5693 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5694
5695 /* server_owner4.so_major_id */
5696 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5697 if (unlikely(status))
5698 return status;
5699 memcpy(res->server_owner->major_id, dummy_str, dummy);
5700 res->server_owner->major_id_sz = dummy;
5701
5702 /* server_scope4 */
5703 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5704 if (unlikely(status))
5705 return status;
5706 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5707 res->server_scope->server_scope_sz = dummy;
5708
5709 /* Implementation Id */
5710 p = xdr_inline_decode(xdr, 4);
5711 if (unlikely(!p))
5712 return -EIO;
5713 impl_id_count = be32_to_cpup(p++);
5714
5715 if (impl_id_count) {
5716 /* nii_domain */
5717 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5718 if (unlikely(status))
5719 return status;
5720 memcpy(res->impl_id->domain, dummy_str, dummy);
5721
5722 /* nii_name */
5723 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5724 if (unlikely(status))
5725 return status;
5726 memcpy(res->impl_id->name, dummy_str, dummy);
5727
5728 /* nii_date */
5729 p = xdr_inline_decode(xdr, 12);
5730 if (unlikely(!p))
5731 return -EIO;
5732 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5733 res->impl_id->date.nseconds = be32_to_cpup(p);
5734
5735 /* if there's more than one entry, ignore the rest */
5736 }
5737 return 0;
5738}
5739
5740static int decode_chan_attrs(struct xdr_stream *xdr,
5741 struct nfs4_channel_attrs *attrs)
5742{
5743 __be32 *p;
5744 u32 nr_attrs, val;
5745
5746 p = xdr_inline_decode(xdr, 28);
5747 if (unlikely(!p))
5748 return -EIO;
5749 val = be32_to_cpup(p++); /* headerpadsz */
5750 if (val)
5751 return -EINVAL; /* no support for header padding yet */
5752 attrs->max_rqst_sz = be32_to_cpup(p++);
5753 attrs->max_resp_sz = be32_to_cpup(p++);
5754 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5755 attrs->max_ops = be32_to_cpup(p++);
5756 attrs->max_reqs = be32_to_cpup(p++);
5757 nr_attrs = be32_to_cpup(p);
5758 if (unlikely(nr_attrs > 1)) {
5759 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5760 "count %u\n", __func__, nr_attrs);
5761 return -EINVAL;
5762 }
5763 if (nr_attrs == 1) {
5764 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5765 if (unlikely(!p))
5766 return -EIO;
5767 }
5768 return 0;
5769}
5770
5771static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5772{
5773 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5774}
5775
5776static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5777 struct nfs41_bind_conn_to_session_res *res)
5778{
5779 __be32 *p;
5780 int status;
5781
5782 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5783 if (!status)
5784 status = decode_sessionid(xdr, &res->sessionid);
5785 if (unlikely(status))
5786 return status;
5787
5788 /* dir flags, rdma mode bool */
5789 p = xdr_inline_decode(xdr, 8);
5790 if (unlikely(!p))
5791 return -EIO;
5792
5793 res->dir = be32_to_cpup(p++);
5794 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5795 return -EIO;
5796 if (be32_to_cpup(p) == 0)
5797 res->use_conn_in_rdma_mode = false;
5798 else
5799 res->use_conn_in_rdma_mode = true;
5800
5801 return 0;
5802}
5803
5804static int decode_create_session(struct xdr_stream *xdr,
5805 struct nfs41_create_session_res *res)
5806{
5807 __be32 *p;
5808 int status;
5809
5810 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5811 if (!status)
5812 status = decode_sessionid(xdr, &res->sessionid);
5813 if (unlikely(status))
5814 return status;
5815
5816 /* seqid, flags */
5817 p = xdr_inline_decode(xdr, 8);
5818 if (unlikely(!p))
5819 return -EIO;
5820 res->seqid = be32_to_cpup(p++);
5821 res->flags = be32_to_cpup(p);
5822
5823 /* Channel attributes */
5824 status = decode_chan_attrs(xdr, &res->fc_attrs);
5825 if (!status)
5826 status = decode_chan_attrs(xdr, &res->bc_attrs);
5827 return status;
5828}
5829
5830static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5831{
5832 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5833}
5834
5835static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5836{
5837 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5838}
5839
5840static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5841{
5842 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5843}
5844#endif /* CONFIG_NFS_V4_1 */
5845
5846static int decode_sequence(struct xdr_stream *xdr,
5847 struct nfs4_sequence_res *res,
5848 struct rpc_rqst *rqstp)
5849{
5850#if defined(CONFIG_NFS_V4_1)
5851 struct nfs4_session *session;
5852 struct nfs4_sessionid id;
5853 u32 dummy;
5854 int status;
5855 __be32 *p;
5856
5857 if (res->sr_slot == NULL)
5858 return 0;
5859 if (!res->sr_slot->table->session)
5860 return 0;
5861
5862 status = decode_op_hdr(xdr, OP_SEQUENCE);
5863 if (!status)
5864 status = decode_sessionid(xdr, &id);
5865 if (unlikely(status))
5866 goto out_err;
5867
5868 /*
5869 * If the server returns different values for sessionID, slotID or
5870 * sequence number, the server is looney tunes.
5871 */
5872 status = -EREMOTEIO;
5873 session = res->sr_slot->table->session;
5874
5875 if (memcmp(id.data, session->sess_id.data,
5876 NFS4_MAX_SESSIONID_LEN)) {
5877 dprintk("%s Invalid session id\n", __func__);
5878 goto out_err;
5879 }
5880
5881 p = xdr_inline_decode(xdr, 20);
5882 if (unlikely(!p))
5883 goto out_overflow;
5884
5885 /* seqid */
5886 dummy = be32_to_cpup(p++);
5887 if (dummy != res->sr_slot->seq_nr) {
5888 dprintk("%s Invalid sequence number\n", __func__);
5889 goto out_err;
5890 }
5891 /* slot id */
5892 dummy = be32_to_cpup(p++);
5893 if (dummy != res->sr_slot->slot_nr) {
5894 dprintk("%s Invalid slot id\n", __func__);
5895 goto out_err;
5896 }
5897 /* highest slot id */
5898 res->sr_highest_slotid = be32_to_cpup(p++);
5899 /* target highest slot id */
5900 res->sr_target_highest_slotid = be32_to_cpup(p++);
5901 /* result flags */
5902 res->sr_status_flags = be32_to_cpup(p);
5903 status = 0;
5904out_err:
5905 res->sr_status = status;
5906 return status;
5907out_overflow:
5908 status = -EIO;
5909 goto out_err;
5910#else /* CONFIG_NFS_V4_1 */
5911 return 0;
5912#endif /* CONFIG_NFS_V4_1 */
5913}
5914
5915#if defined(CONFIG_NFS_V4_1)
5916static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5917{
5918 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5919 return decode_stateid(xdr, stateid);
5920}
5921
5922static int decode_getdeviceinfo(struct xdr_stream *xdr,
5923 struct nfs4_getdeviceinfo_res *res)
5924{
5925 struct pnfs_device *pdev = res->pdev;
5926 __be32 *p;
5927 uint32_t len, type;
5928 int status;
5929
5930 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5931 if (status) {
5932 if (status == -ETOOSMALL) {
5933 p = xdr_inline_decode(xdr, 4);
5934 if (unlikely(!p))
5935 return -EIO;
5936 pdev->mincount = be32_to_cpup(p);
5937 dprintk("%s: Min count too small. mincnt = %u\n",
5938 __func__, pdev->mincount);
5939 }
5940 return status;
5941 }
5942
5943 p = xdr_inline_decode(xdr, 8);
5944 if (unlikely(!p))
5945 return -EIO;
5946 type = be32_to_cpup(p++);
5947 if (type != pdev->layout_type) {
5948 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5949 __func__, pdev->layout_type, type);
5950 return -EINVAL;
5951 }
5952 /*
5953 * Get the length of the opaque device_addr4. xdr_read_pages places
5954 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5955 * and places the remaining xdr data in xdr_buf->tail
5956 */
5957 pdev->mincount = be32_to_cpup(p);
5958 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5959 return -EIO;
5960
5961 /* Parse notification bitmap, verifying that it is zero. */
5962 p = xdr_inline_decode(xdr, 4);
5963 if (unlikely(!p))
5964 return -EIO;
5965 len = be32_to_cpup(p);
5966 if (len) {
5967 uint32_t i;
5968
5969 p = xdr_inline_decode(xdr, 4 * len);
5970 if (unlikely(!p))
5971 return -EIO;
5972
5973 res->notification = be32_to_cpup(p++);
5974 for (i = 1; i < len; i++) {
5975 if (be32_to_cpup(p++)) {
5976 dprintk("%s: unsupported notification\n",
5977 __func__);
5978 return -EIO;
5979 }
5980 }
5981 }
5982 return 0;
5983}
5984
5985static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5986 struct nfs4_layoutget_res *res)
5987{
5988 __be32 *p;
5989 int status;
5990 u32 layout_count;
5991 u32 recvd;
5992
5993 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5994 if (status)
5995 goto out;
5996 p = xdr_inline_decode(xdr, 4);
5997 if (unlikely(!p))
5998 goto out_overflow;
5999 res->return_on_close = be32_to_cpup(p);
6000 decode_layout_stateid(xdr, &res->stateid);
6001 p = xdr_inline_decode(xdr, 4);
6002 if (unlikely(!p))
6003 goto out_overflow;
6004 layout_count = be32_to_cpup(p);
6005 if (!layout_count) {
6006 dprintk("%s: server responded with empty layout array\n",
6007 __func__);
6008 status = -EINVAL;
6009 goto out;
6010 }
6011
6012 p = xdr_inline_decode(xdr, 28);
6013 if (unlikely(!p))
6014 goto out_overflow;
6015 p = xdr_decode_hyper(p, &res->range.offset);
6016 p = xdr_decode_hyper(p, &res->range.length);
6017 res->range.iomode = be32_to_cpup(p++);
6018 res->type = be32_to_cpup(p++);
6019 res->layoutp->len = be32_to_cpup(p);
6020
6021 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6022 __func__,
6023 (unsigned long)res->range.offset,
6024 (unsigned long)res->range.length,
6025 res->range.iomode,
6026 res->type,
6027 res->layoutp->len);
6028
6029 recvd = xdr_read_pages(xdr, res->layoutp->len);
6030 if (res->layoutp->len > recvd) {
6031 dprintk("NFS: server cheating in layoutget reply: "
6032 "layout len %u > recvd %u\n",
6033 res->layoutp->len, recvd);
6034 status = -EINVAL;
6035 goto out;
6036 }
6037
6038 if (layout_count > 1) {
6039 /* We only handle a length one array at the moment. Any
6040 * further entries are just ignored. Note that this means
6041 * the client may see a response that is less than the
6042 * minimum it requested.
6043 */
6044 dprintk("%s: server responded with %d layouts, dropping tail\n",
6045 __func__, layout_count);
6046 }
6047
6048out:
6049 res->status = status;
6050 return status;
6051out_overflow:
6052 status = -EIO;
6053 goto out;
6054}
6055
6056static int decode_layoutreturn(struct xdr_stream *xdr,
6057 struct nfs4_layoutreturn_res *res)
6058{
6059 __be32 *p;
6060 int status;
6061
6062 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6063 if (status)
6064 return status;
6065 p = xdr_inline_decode(xdr, 4);
6066 if (unlikely(!p))
6067 return -EIO;
6068 res->lrs_present = be32_to_cpup(p);
6069 if (res->lrs_present)
6070 status = decode_layout_stateid(xdr, &res->stateid);
6071 else
6072 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6073 return status;
6074}
6075
6076static int decode_layoutcommit(struct xdr_stream *xdr,
6077 struct rpc_rqst *req,
6078 struct nfs4_layoutcommit_res *res)
6079{
6080 __be32 *p;
6081 __u32 sizechanged;
6082 int status;
6083
6084 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6085 res->status = status;
6086 if (status)
6087 return status;
6088
6089 p = xdr_inline_decode(xdr, 4);
6090 if (unlikely(!p))
6091 return -EIO;
6092 sizechanged = be32_to_cpup(p);
6093
6094 if (sizechanged) {
6095 /* throw away new size */
6096 p = xdr_inline_decode(xdr, 8);
6097 if (unlikely(!p))
6098 return -EIO;
6099 }
6100 return 0;
6101}
6102
6103static int decode_test_stateid(struct xdr_stream *xdr,
6104 struct nfs41_test_stateid_res *res)
6105{
6106 __be32 *p;
6107 int status;
6108 int num_res;
6109
6110 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6111 if (status)
6112 return status;
6113
6114 p = xdr_inline_decode(xdr, 4);
6115 if (unlikely(!p))
6116 return -EIO;
6117 num_res = be32_to_cpup(p++);
6118 if (num_res != 1)
6119 return -EIO;
6120
6121 p = xdr_inline_decode(xdr, 4);
6122 if (unlikely(!p))
6123 return -EIO;
6124 res->status = be32_to_cpup(p++);
6125
6126 return status;
6127}
6128
6129static int decode_free_stateid(struct xdr_stream *xdr,
6130 struct nfs41_free_stateid_res *res)
6131{
6132 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6133 return res->status;
6134}
6135#else
6136static inline
6137int decode_layoutreturn(struct xdr_stream *xdr,
6138 struct nfs4_layoutreturn_res *res)
6139{
6140 return 0;
6141}
6142
6143static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6144 struct nfs4_layoutget_res *res)
6145{
6146 return 0;
6147}
6148
6149#endif /* CONFIG_NFS_V4_1 */
6150
6151/*
6152 * END OF "GENERIC" DECODE ROUTINES.
6153 */
6154
6155/*
6156 * Decode OPEN_DOWNGRADE response
6157 */
6158static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6159 struct xdr_stream *xdr,
6160 void *data)
6161{
6162 struct nfs_closeres *res = data;
6163 struct compound_hdr hdr;
6164 int status;
6165
6166 status = decode_compound_hdr(xdr, &hdr);
6167 if (status)
6168 goto out;
6169 status = decode_sequence(xdr, &res->seq_res, rqstp);
6170 if (status)
6171 goto out;
6172 status = decode_putfh(xdr);
6173 if (status)
6174 goto out;
6175 if (res->lr_res) {
6176 status = decode_layoutreturn(xdr, res->lr_res);
6177 res->lr_ret = status;
6178 if (status)
6179 goto out;
6180 }
6181 status = decode_open_downgrade(xdr, res);
6182out:
6183 return status;
6184}
6185
6186/*
6187 * Decode ACCESS response
6188 */
6189static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6190 void *data)
6191{
6192 struct nfs4_accessres *res = data;
6193 struct compound_hdr hdr;
6194 int status;
6195
6196 status = decode_compound_hdr(xdr, &hdr);
6197 if (status)
6198 goto out;
6199 status = decode_sequence(xdr, &res->seq_res, rqstp);
6200 if (status)
6201 goto out;
6202 status = decode_putfh(xdr);
6203 if (status != 0)
6204 goto out;
6205 status = decode_access(xdr, &res->supported, &res->access);
6206 if (status != 0)
6207 goto out;
6208 if (res->fattr)
6209 decode_getfattr(xdr, res->fattr, res->server);
6210out:
6211 return status;
6212}
6213
6214/*
6215 * Decode LOOKUP response
6216 */
6217static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6218 void *data)
6219{
6220 struct nfs4_lookup_res *res = data;
6221 struct compound_hdr hdr;
6222 int status;
6223
6224 status = decode_compound_hdr(xdr, &hdr);
6225 if (status)
6226 goto out;
6227 status = decode_sequence(xdr, &res->seq_res, rqstp);
6228 if (status)
6229 goto out;
6230 status = decode_putfh(xdr);
6231 if (status)
6232 goto out;
6233 status = decode_lookup(xdr);
6234 if (status)
6235 goto out;
6236 status = decode_getfh(xdr, res->fh);
6237 if (status)
6238 goto out;
6239 status = decode_getfattr(xdr, res->fattr, res->server);
6240out:
6241 return status;
6242}
6243
6244/*
6245 * Decode LOOKUPP response
6246 */
6247static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6248 void *data)
6249{
6250 struct nfs4_lookupp_res *res = data;
6251 struct compound_hdr hdr;
6252 int status;
6253
6254 status = decode_compound_hdr(xdr, &hdr);
6255 if (status)
6256 goto out;
6257 status = decode_sequence(xdr, &res->seq_res, rqstp);
6258 if (status)
6259 goto out;
6260 status = decode_putfh(xdr);
6261 if (status)
6262 goto out;
6263 status = decode_lookupp(xdr);
6264 if (status)
6265 goto out;
6266 status = decode_getfh(xdr, res->fh);
6267 if (status)
6268 goto out;
6269 status = decode_getfattr(xdr, res->fattr, res->server);
6270out:
6271 return status;
6272}
6273
6274/*
6275 * Decode LOOKUP_ROOT response
6276 */
6277static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6278 struct xdr_stream *xdr,
6279 void *data)
6280{
6281 struct nfs4_lookup_res *res = data;
6282 struct compound_hdr hdr;
6283 int status;
6284
6285 status = decode_compound_hdr(xdr, &hdr);
6286 if (status)
6287 goto out;
6288 status = decode_sequence(xdr, &res->seq_res, rqstp);
6289 if (status)
6290 goto out;
6291 status = decode_putrootfh(xdr);
6292 if (status)
6293 goto out;
6294 status = decode_getfh(xdr, res->fh);
6295 if (status == 0)
6296 status = decode_getfattr(xdr, res->fattr, res->server);
6297out:
6298 return status;
6299}
6300
6301/*
6302 * Decode REMOVE response
6303 */
6304static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6305 void *data)
6306{
6307 struct nfs_removeres *res = data;
6308 struct compound_hdr hdr;
6309 int status;
6310
6311 status = decode_compound_hdr(xdr, &hdr);
6312 if (status)
6313 goto out;
6314 status = decode_sequence(xdr, &res->seq_res, rqstp);
6315 if (status)
6316 goto out;
6317 status = decode_putfh(xdr);
6318 if (status)
6319 goto out;
6320 status = decode_remove(xdr, &res->cinfo);
6321out:
6322 return status;
6323}
6324
6325/*
6326 * Decode RENAME response
6327 */
6328static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6329 void *data)
6330{
6331 struct nfs_renameres *res = data;
6332 struct compound_hdr hdr;
6333 int status;
6334
6335 status = decode_compound_hdr(xdr, &hdr);
6336 if (status)
6337 goto out;
6338 status = decode_sequence(xdr, &res->seq_res, rqstp);
6339 if (status)
6340 goto out;
6341 status = decode_putfh(xdr);
6342 if (status)
6343 goto out;
6344 status = decode_savefh(xdr);
6345 if (status)
6346 goto out;
6347 status = decode_putfh(xdr);
6348 if (status)
6349 goto out;
6350 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6351out:
6352 return status;
6353}
6354
6355/*
6356 * Decode LINK response
6357 */
6358static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6359 void *data)
6360{
6361 struct nfs4_link_res *res = data;
6362 struct compound_hdr hdr;
6363 int status;
6364
6365 status = decode_compound_hdr(xdr, &hdr);
6366 if (status)
6367 goto out;
6368 status = decode_sequence(xdr, &res->seq_res, rqstp);
6369 if (status)
6370 goto out;
6371 status = decode_putfh(xdr);
6372 if (status)
6373 goto out;
6374 status = decode_savefh(xdr);
6375 if (status)
6376 goto out;
6377 status = decode_putfh(xdr);
6378 if (status)
6379 goto out;
6380 status = decode_link(xdr, &res->cinfo);
6381 if (status)
6382 goto out;
6383 /*
6384 * Note order: OP_LINK leaves the directory as the current
6385 * filehandle.
6386 */
6387 status = decode_restorefh(xdr);
6388 if (status)
6389 goto out;
6390 decode_getfattr(xdr, res->fattr, res->server);
6391out:
6392 return status;
6393}
6394
6395/*
6396 * Decode CREATE response
6397 */
6398static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6399 void *data)
6400{
6401 struct nfs4_create_res *res = data;
6402 struct compound_hdr hdr;
6403 int status;
6404
6405 status = decode_compound_hdr(xdr, &hdr);
6406 if (status)
6407 goto out;
6408 status = decode_sequence(xdr, &res->seq_res, rqstp);
6409 if (status)
6410 goto out;
6411 status = decode_putfh(xdr);
6412 if (status)
6413 goto out;
6414 status = decode_create(xdr, &res->dir_cinfo);
6415 if (status)
6416 goto out;
6417 status = decode_getfh(xdr, res->fh);
6418 if (status)
6419 goto out;
6420 decode_getfattr(xdr, res->fattr, res->server);
6421out:
6422 return status;
6423}
6424
6425/*
6426 * Decode SYMLINK response
6427 */
6428static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6429 void *res)
6430{
6431 return nfs4_xdr_dec_create(rqstp, xdr, res);
6432}
6433
6434/*
6435 * Decode GETATTR response
6436 */
6437static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6438 void *data)
6439{
6440 struct nfs4_getattr_res *res = data;
6441 struct compound_hdr hdr;
6442 int status;
6443
6444 status = decode_compound_hdr(xdr, &hdr);
6445 if (status)
6446 goto out;
6447 status = decode_sequence(xdr, &res->seq_res, rqstp);
6448 if (status)
6449 goto out;
6450 status = decode_putfh(xdr);
6451 if (status)
6452 goto out;
6453 status = decode_getfattr(xdr, res->fattr, res->server);
6454out:
6455 return status;
6456}
6457
6458/*
6459 * Encode an SETACL request
6460 */
6461static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6462 const void *data)
6463{
6464 const struct nfs_setaclargs *args = data;
6465 struct compound_hdr hdr = {
6466 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6467 };
6468
6469 encode_compound_hdr(xdr, req, &hdr);
6470 encode_sequence(xdr, &args->seq_args, &hdr);
6471 encode_putfh(xdr, args->fh, &hdr);
6472 encode_setacl(xdr, args, &hdr);
6473 encode_nops(&hdr);
6474}
6475
6476/*
6477 * Decode SETACL response
6478 */
6479static int
6480nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6481 void *data)
6482{
6483 struct nfs_setaclres *res = data;
6484 struct compound_hdr hdr;
6485 int status;
6486
6487 status = decode_compound_hdr(xdr, &hdr);
6488 if (status)
6489 goto out;
6490 status = decode_sequence(xdr, &res->seq_res, rqstp);
6491 if (status)
6492 goto out;
6493 status = decode_putfh(xdr);
6494 if (status)
6495 goto out;
6496 status = decode_setattr(xdr);
6497out:
6498 return status;
6499}
6500
6501/*
6502 * Decode GETACL response
6503 */
6504static int
6505nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6506 void *data)
6507{
6508 struct nfs_getaclres *res = data;
6509 struct compound_hdr hdr;
6510 int status;
6511
6512 if (res->acl_scratch != NULL)
6513 xdr_set_scratch_page(xdr, res->acl_scratch);
6514 status = decode_compound_hdr(xdr, &hdr);
6515 if (status)
6516 goto out;
6517 status = decode_sequence(xdr, &res->seq_res, rqstp);
6518 if (status)
6519 goto out;
6520 status = decode_putfh(xdr);
6521 if (status)
6522 goto out;
6523 status = decode_getacl(xdr, rqstp, res, res->acl_type);
6524
6525out:
6526 return status;
6527}
6528
6529/*
6530 * Decode CLOSE response
6531 */
6532static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6533 void *data)
6534{
6535 struct nfs_closeres *res = data;
6536 struct compound_hdr hdr;
6537 int status;
6538
6539 status = decode_compound_hdr(xdr, &hdr);
6540 if (status)
6541 goto out;
6542 status = decode_sequence(xdr, &res->seq_res, rqstp);
6543 if (status)
6544 goto out;
6545 status = decode_putfh(xdr);
6546 if (status)
6547 goto out;
6548 if (res->lr_res) {
6549 status = decode_layoutreturn(xdr, res->lr_res);
6550 res->lr_ret = status;
6551 if (status)
6552 goto out;
6553 }
6554 if (res->fattr != NULL) {
6555 status = decode_getfattr(xdr, res->fattr, res->server);
6556 if (status != 0)
6557 goto out;
6558 }
6559 status = decode_close(xdr, res);
6560out:
6561 return status;
6562}
6563
6564/*
6565 * Decode OPEN response
6566 */
6567static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6568 void *data)
6569{
6570 struct nfs_openres *res = data;
6571 struct compound_hdr hdr;
6572 int status;
6573
6574 status = decode_compound_hdr(xdr, &hdr);
6575 if (status)
6576 goto out;
6577 status = decode_sequence(xdr, &res->seq_res, rqstp);
6578 if (status)
6579 goto out;
6580 status = decode_putfh(xdr);
6581 if (status)
6582 goto out;
6583 status = decode_open(xdr, res);
6584 if (status)
6585 goto out;
6586 status = decode_getfh(xdr, &res->fh);
6587 if (status)
6588 goto out;
6589 if (res->access_request)
6590 decode_access(xdr, &res->access_supported, &res->access_result);
6591 decode_getfattr(xdr, res->f_attr, res->server);
6592 if (res->lg_res)
6593 decode_layoutget(xdr, rqstp, res->lg_res);
6594out:
6595 return status;
6596}
6597
6598/*
6599 * Decode OPEN_CONFIRM response
6600 */
6601static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6602 struct xdr_stream *xdr,
6603 void *data)
6604{
6605 struct nfs_open_confirmres *res = data;
6606 struct compound_hdr hdr;
6607 int status;
6608
6609 status = decode_compound_hdr(xdr, &hdr);
6610 if (status)
6611 goto out;
6612 status = decode_putfh(xdr);
6613 if (status)
6614 goto out;
6615 status = decode_open_confirm(xdr, res);
6616out:
6617 return status;
6618}
6619
6620/*
6621 * Decode OPEN response
6622 */
6623static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6624 struct xdr_stream *xdr,
6625 void *data)
6626{
6627 struct nfs_openres *res = data;
6628 struct compound_hdr hdr;
6629 int status;
6630
6631 status = decode_compound_hdr(xdr, &hdr);
6632 if (status)
6633 goto out;
6634 status = decode_sequence(xdr, &res->seq_res, rqstp);
6635 if (status)
6636 goto out;
6637 status = decode_putfh(xdr);
6638 if (status)
6639 goto out;
6640 status = decode_open(xdr, res);
6641 if (status)
6642 goto out;
6643 if (res->access_request)
6644 decode_access(xdr, &res->access_supported, &res->access_result);
6645 decode_getfattr(xdr, res->f_attr, res->server);
6646 if (res->lg_res)
6647 decode_layoutget(xdr, rqstp, res->lg_res);
6648out:
6649 return status;
6650}
6651
6652/*
6653 * Decode SETATTR response
6654 */
6655static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6656 struct xdr_stream *xdr,
6657 void *data)
6658{
6659 struct nfs_setattrres *res = data;
6660 struct compound_hdr hdr;
6661 int status;
6662
6663 status = decode_compound_hdr(xdr, &hdr);
6664 if (status)
6665 goto out;
6666 status = decode_sequence(xdr, &res->seq_res, rqstp);
6667 if (status)
6668 goto out;
6669 status = decode_putfh(xdr);
6670 if (status)
6671 goto out;
6672 status = decode_setattr(xdr);
6673 if (status)
6674 goto out;
6675 decode_getfattr(xdr, res->fattr, res->server);
6676out:
6677 return status;
6678}
6679
6680/*
6681 * Decode LOCK response
6682 */
6683static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6684 void *data)
6685{
6686 struct nfs_lock_res *res = data;
6687 struct compound_hdr hdr;
6688 int status;
6689
6690 status = decode_compound_hdr(xdr, &hdr);
6691 if (status)
6692 goto out;
6693 status = decode_sequence(xdr, &res->seq_res, rqstp);
6694 if (status)
6695 goto out;
6696 status = decode_putfh(xdr);
6697 if (status)
6698 goto out;
6699 status = decode_lock(xdr, res);
6700out:
6701 return status;
6702}
6703
6704/*
6705 * Decode LOCKT response
6706 */
6707static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6708 void *data)
6709{
6710 struct nfs_lockt_res *res = data;
6711 struct compound_hdr hdr;
6712 int status;
6713
6714 status = decode_compound_hdr(xdr, &hdr);
6715 if (status)
6716 goto out;
6717 status = decode_sequence(xdr, &res->seq_res, rqstp);
6718 if (status)
6719 goto out;
6720 status = decode_putfh(xdr);
6721 if (status)
6722 goto out;
6723 status = decode_lockt(xdr, res);
6724out:
6725 return status;
6726}
6727
6728/*
6729 * Decode LOCKU response
6730 */
6731static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6732 void *data)
6733{
6734 struct nfs_locku_res *res = data;
6735 struct compound_hdr hdr;
6736 int status;
6737
6738 status = decode_compound_hdr(xdr, &hdr);
6739 if (status)
6740 goto out;
6741 status = decode_sequence(xdr, &res->seq_res, rqstp);
6742 if (status)
6743 goto out;
6744 status = decode_putfh(xdr);
6745 if (status)
6746 goto out;
6747 status = decode_locku(xdr, res);
6748out:
6749 return status;
6750}
6751
6752static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6753 struct xdr_stream *xdr, void *dummy)
6754{
6755 struct compound_hdr hdr;
6756 int status;
6757
6758 status = decode_compound_hdr(xdr, &hdr);
6759 if (!status)
6760 status = decode_release_lockowner(xdr);
6761 return status;
6762}
6763
6764/*
6765 * Decode READLINK response
6766 */
6767static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6768 struct xdr_stream *xdr,
6769 void *data)
6770{
6771 struct nfs4_readlink_res *res = data;
6772 struct compound_hdr hdr;
6773 int status;
6774
6775 status = decode_compound_hdr(xdr, &hdr);
6776 if (status)
6777 goto out;
6778 status = decode_sequence(xdr, &res->seq_res, rqstp);
6779 if (status)
6780 goto out;
6781 status = decode_putfh(xdr);
6782 if (status)
6783 goto out;
6784 status = decode_readlink(xdr, rqstp);
6785out:
6786 return status;
6787}
6788
6789/*
6790 * Decode READDIR response
6791 */
6792static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6793 void *data)
6794{
6795 struct nfs4_readdir_res *res = data;
6796 struct compound_hdr hdr;
6797 int status;
6798
6799 status = decode_compound_hdr(xdr, &hdr);
6800 if (status)
6801 goto out;
6802 status = decode_sequence(xdr, &res->seq_res, rqstp);
6803 if (status)
6804 goto out;
6805 status = decode_putfh(xdr);
6806 if (status)
6807 goto out;
6808 status = decode_readdir(xdr, rqstp, res);
6809out:
6810 return status;
6811}
6812
6813/*
6814 * Decode Read response
6815 */
6816static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6817 void *data)
6818{
6819 struct nfs_pgio_res *res = data;
6820 struct compound_hdr hdr;
6821 int status;
6822
6823 status = decode_compound_hdr(xdr, &hdr);
6824 res->op_status = hdr.status;
6825 if (status)
6826 goto out;
6827 status = decode_sequence(xdr, &res->seq_res, rqstp);
6828 if (status)
6829 goto out;
6830 status = decode_putfh(xdr);
6831 if (status)
6832 goto out;
6833 status = decode_read(xdr, rqstp, res);
6834 if (!status)
6835 status = res->count;
6836out:
6837 return status;
6838}
6839
6840/*
6841 * Decode WRITE response
6842 */
6843static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6844 void *data)
6845{
6846 struct nfs_pgio_res *res = data;
6847 struct compound_hdr hdr;
6848 int status;
6849
6850 status = decode_compound_hdr(xdr, &hdr);
6851 res->op_status = hdr.status;
6852 if (status)
6853 goto out;
6854 status = decode_sequence(xdr, &res->seq_res, rqstp);
6855 if (status)
6856 goto out;
6857 status = decode_putfh(xdr);
6858 if (status)
6859 goto out;
6860 status = decode_write(xdr, res);
6861 if (status)
6862 goto out;
6863 if (res->fattr)
6864 decode_getfattr(xdr, res->fattr, res->server);
6865 if (!status)
6866 status = res->count;
6867out:
6868 return status;
6869}
6870
6871/*
6872 * Decode COMMIT response
6873 */
6874static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6875 void *data)
6876{
6877 struct nfs_commitres *res = data;
6878 struct compound_hdr hdr;
6879 int status;
6880
6881 status = decode_compound_hdr(xdr, &hdr);
6882 res->op_status = hdr.status;
6883 if (status)
6884 goto out;
6885 status = decode_sequence(xdr, &res->seq_res, rqstp);
6886 if (status)
6887 goto out;
6888 status = decode_putfh(xdr);
6889 if (status)
6890 goto out;
6891 status = decode_commit(xdr, res);
6892out:
6893 return status;
6894}
6895
6896/*
6897 * Decode FSINFO response
6898 */
6899static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6900 void *data)
6901{
6902 struct nfs4_fsinfo_res *res = data;
6903 struct compound_hdr hdr;
6904 int status;
6905
6906 status = decode_compound_hdr(xdr, &hdr);
6907 if (!status)
6908 status = decode_sequence(xdr, &res->seq_res, req);
6909 if (!status)
6910 status = decode_putfh(xdr);
6911 if (!status)
6912 status = decode_fsinfo(xdr, res->fsinfo);
6913 return status;
6914}
6915
6916/*
6917 * Decode PATHCONF response
6918 */
6919static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6920 void *data)
6921{
6922 struct nfs4_pathconf_res *res = data;
6923 struct compound_hdr hdr;
6924 int status;
6925
6926 status = decode_compound_hdr(xdr, &hdr);
6927 if (!status)
6928 status = decode_sequence(xdr, &res->seq_res, req);
6929 if (!status)
6930 status = decode_putfh(xdr);
6931 if (!status)
6932 status = decode_pathconf(xdr, res->pathconf);
6933 return status;
6934}
6935
6936/*
6937 * Decode STATFS response
6938 */
6939static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6940 void *data)
6941{
6942 struct nfs4_statfs_res *res = data;
6943 struct compound_hdr hdr;
6944 int status;
6945
6946 status = decode_compound_hdr(xdr, &hdr);
6947 if (!status)
6948 status = decode_sequence(xdr, &res->seq_res, req);
6949 if (!status)
6950 status = decode_putfh(xdr);
6951 if (!status)
6952 status = decode_statfs(xdr, res->fsstat);
6953 return status;
6954}
6955
6956/*
6957 * Decode GETATTR_BITMAP response
6958 */
6959static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6960 struct xdr_stream *xdr,
6961 void *data)
6962{
6963 struct nfs4_server_caps_res *res = data;
6964 struct compound_hdr hdr;
6965 int status;
6966
6967 status = decode_compound_hdr(xdr, &hdr);
6968 if (status)
6969 goto out;
6970 status = decode_sequence(xdr, &res->seq_res, req);
6971 if (status)
6972 goto out;
6973 status = decode_putfh(xdr);
6974 if (status)
6975 goto out;
6976 status = decode_server_caps(xdr, res);
6977out:
6978 return status;
6979}
6980
6981/*
6982 * Decode RENEW response
6983 */
6984static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6985 void *__unused)
6986{
6987 struct compound_hdr hdr;
6988 int status;
6989
6990 status = decode_compound_hdr(xdr, &hdr);
6991 if (!status)
6992 status = decode_renew(xdr);
6993 return status;
6994}
6995
6996/*
6997 * Decode SETCLIENTID response
6998 */
6999static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
7000 struct xdr_stream *xdr,
7001 void *data)
7002{
7003 struct nfs4_setclientid_res *res = data;
7004 struct compound_hdr hdr;
7005 int status;
7006
7007 status = decode_compound_hdr(xdr, &hdr);
7008 if (!status)
7009 status = decode_setclientid(xdr, res);
7010 return status;
7011}
7012
7013/*
7014 * Decode SETCLIENTID_CONFIRM response
7015 */
7016static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
7017 struct xdr_stream *xdr,
7018 void *data)
7019{
7020 struct compound_hdr hdr;
7021 int status;
7022
7023 status = decode_compound_hdr(xdr, &hdr);
7024 if (!status)
7025 status = decode_setclientid_confirm(xdr);
7026 return status;
7027}
7028
7029/*
7030 * Decode DELEGRETURN response
7031 */
7032static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
7033 struct xdr_stream *xdr,
7034 void *data)
7035{
7036 struct nfs4_delegreturnres *res = data;
7037 struct compound_hdr hdr;
7038 int status;
7039
7040 status = decode_compound_hdr(xdr, &hdr);
7041 if (status)
7042 goto out;
7043 status = decode_sequence(xdr, &res->seq_res, rqstp);
7044 if (status)
7045 goto out;
7046 status = decode_putfh(xdr);
7047 if (status != 0)
7048 goto out;
7049 if (res->lr_res) {
7050 status = decode_layoutreturn(xdr, res->lr_res);
7051 res->lr_ret = status;
7052 if (status)
7053 goto out;
7054 }
7055 if (res->fattr) {
7056 status = decode_getfattr(xdr, res->fattr, res->server);
7057 if (status != 0)
7058 goto out;
7059 }
7060 status = decode_delegreturn(xdr);
7061out:
7062 return status;
7063}
7064
7065/*
7066 * Decode FS_LOCATIONS response
7067 */
7068static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7069 struct xdr_stream *xdr,
7070 void *data)
7071{
7072 struct nfs4_fs_locations_res *res = data;
7073 struct compound_hdr hdr;
7074 int status;
7075
7076 status = decode_compound_hdr(xdr, &hdr);
7077 if (status)
7078 goto out;
7079 status = decode_sequence(xdr, &res->seq_res, req);
7080 if (status)
7081 goto out;
7082 status = decode_putfh(xdr);
7083 if (status)
7084 goto out;
7085 if (res->migration) {
7086 xdr_enter_page(xdr, PAGE_SIZE);
7087 status = decode_getfattr_generic(xdr,
7088 res->fs_locations->fattr,
7089 NULL, res->fs_locations,
7090 res->fs_locations->server);
7091 if (status)
7092 goto out;
7093 if (res->renew)
7094 status = decode_renew(xdr);
7095 } else {
7096 status = decode_lookup(xdr);
7097 if (status)
7098 goto out;
7099 xdr_enter_page(xdr, PAGE_SIZE);
7100 status = decode_getfattr_generic(xdr,
7101 res->fs_locations->fattr,
7102 NULL, res->fs_locations,
7103 res->fs_locations->server);
7104 }
7105out:
7106 return status;
7107}
7108
7109/*
7110 * Decode SECINFO response
7111 */
7112static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7113 struct xdr_stream *xdr,
7114 void *data)
7115{
7116 struct nfs4_secinfo_res *res = data;
7117 struct compound_hdr hdr;
7118 int status;
7119
7120 status = decode_compound_hdr(xdr, &hdr);
7121 if (status)
7122 goto out;
7123 status = decode_sequence(xdr, &res->seq_res, rqstp);
7124 if (status)
7125 goto out;
7126 status = decode_putfh(xdr);
7127 if (status)
7128 goto out;
7129 status = decode_secinfo(xdr, res);
7130out:
7131 return status;
7132}
7133
7134/*
7135 * Decode FSID_PRESENT response
7136 */
7137static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7138 struct xdr_stream *xdr,
7139 void *data)
7140{
7141 struct nfs4_fsid_present_res *res = data;
7142 struct compound_hdr hdr;
7143 int status;
7144
7145 status = decode_compound_hdr(xdr, &hdr);
7146 if (status)
7147 goto out;
7148 status = decode_sequence(xdr, &res->seq_res, rqstp);
7149 if (status)
7150 goto out;
7151 status = decode_putfh(xdr);
7152 if (status)
7153 goto out;
7154 status = decode_getfh(xdr, res->fh);
7155 if (status)
7156 goto out;
7157 if (res->renew)
7158 status = decode_renew(xdr);
7159out:
7160 return status;
7161}
7162
7163#if defined(CONFIG_NFS_V4_1)
7164/*
7165 * Decode BIND_CONN_TO_SESSION response
7166 */
7167static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7168 struct xdr_stream *xdr,
7169 void *res)
7170{
7171 struct compound_hdr hdr;
7172 int status;
7173
7174 status = decode_compound_hdr(xdr, &hdr);
7175 if (!status)
7176 status = decode_bind_conn_to_session(xdr, res);
7177 return status;
7178}
7179
7180/*
7181 * Decode EXCHANGE_ID response
7182 */
7183static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7184 struct xdr_stream *xdr,
7185 void *res)
7186{
7187 struct compound_hdr hdr;
7188 int status;
7189
7190 status = decode_compound_hdr(xdr, &hdr);
7191 if (!status)
7192 status = decode_exchange_id(xdr, res);
7193 return status;
7194}
7195
7196/*
7197 * Decode CREATE_SESSION response
7198 */
7199static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7200 struct xdr_stream *xdr,
7201 void *res)
7202{
7203 struct compound_hdr hdr;
7204 int status;
7205
7206 status = decode_compound_hdr(xdr, &hdr);
7207 if (!status)
7208 status = decode_create_session(xdr, res);
7209 return status;
7210}
7211
7212/*
7213 * Decode DESTROY_SESSION response
7214 */
7215static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7216 struct xdr_stream *xdr,
7217 void *res)
7218{
7219 struct compound_hdr hdr;
7220 int status;
7221
7222 status = decode_compound_hdr(xdr, &hdr);
7223 if (!status)
7224 status = decode_destroy_session(xdr, res);
7225 return status;
7226}
7227
7228/*
7229 * Decode DESTROY_CLIENTID response
7230 */
7231static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7232 struct xdr_stream *xdr,
7233 void *res)
7234{
7235 struct compound_hdr hdr;
7236 int status;
7237
7238 status = decode_compound_hdr(xdr, &hdr);
7239 if (!status)
7240 status = decode_destroy_clientid(xdr, res);
7241 return status;
7242}
7243
7244/*
7245 * Decode SEQUENCE response
7246 */
7247static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7248 struct xdr_stream *xdr,
7249 void *res)
7250{
7251 struct compound_hdr hdr;
7252 int status;
7253
7254 status = decode_compound_hdr(xdr, &hdr);
7255 if (!status)
7256 status = decode_sequence(xdr, res, rqstp);
7257 return status;
7258}
7259
7260#endif
7261
7262/*
7263 * Decode GET_LEASE_TIME response
7264 */
7265static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7266 struct xdr_stream *xdr,
7267 void *data)
7268{
7269 struct nfs4_get_lease_time_res *res = data;
7270 struct compound_hdr hdr;
7271 int status;
7272
7273 status = decode_compound_hdr(xdr, &hdr);
7274 if (!status)
7275 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7276 if (!status)
7277 status = decode_putrootfh(xdr);
7278 if (!status)
7279 status = decode_fsinfo(xdr, res->lr_fsinfo);
7280 return status;
7281}
7282
7283#ifdef CONFIG_NFS_V4_1
7284
7285/*
7286 * Decode RECLAIM_COMPLETE response
7287 */
7288static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7289 struct xdr_stream *xdr,
7290 void *data)
7291{
7292 struct nfs41_reclaim_complete_res *res = data;
7293 struct compound_hdr hdr;
7294 int status;
7295
7296 status = decode_compound_hdr(xdr, &hdr);
7297 if (!status)
7298 status = decode_sequence(xdr, &res->seq_res, rqstp);
7299 if (!status)
7300 status = decode_reclaim_complete(xdr, NULL);
7301 return status;
7302}
7303
7304/*
7305 * Decode GETDEVINFO response
7306 */
7307static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7308 struct xdr_stream *xdr,
7309 void *data)
7310{
7311 struct nfs4_getdeviceinfo_res *res = data;
7312 struct compound_hdr hdr;
7313 int status;
7314
7315 status = decode_compound_hdr(xdr, &hdr);
7316 if (status != 0)
7317 goto out;
7318 status = decode_sequence(xdr, &res->seq_res, rqstp);
7319 if (status != 0)
7320 goto out;
7321 status = decode_getdeviceinfo(xdr, res);
7322out:
7323 return status;
7324}
7325
7326/*
7327 * Decode LAYOUTGET response
7328 */
7329static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7330 struct xdr_stream *xdr,
7331 void *data)
7332{
7333 struct nfs4_layoutget_res *res = data;
7334 struct compound_hdr hdr;
7335 int status;
7336
7337 status = decode_compound_hdr(xdr, &hdr);
7338 if (status)
7339 goto out;
7340 status = decode_sequence(xdr, &res->seq_res, rqstp);
7341 if (status)
7342 goto out;
7343 status = decode_putfh(xdr);
7344 if (status)
7345 goto out;
7346 status = decode_layoutget(xdr, rqstp, res);
7347out:
7348 return status;
7349}
7350
7351/*
7352 * Decode LAYOUTRETURN response
7353 */
7354static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7355 struct xdr_stream *xdr,
7356 void *data)
7357{
7358 struct nfs4_layoutreturn_res *res = data;
7359 struct compound_hdr hdr;
7360 int status;
7361
7362 status = decode_compound_hdr(xdr, &hdr);
7363 if (status)
7364 goto out;
7365 status = decode_sequence(xdr, &res->seq_res, rqstp);
7366 if (status)
7367 goto out;
7368 status = decode_putfh(xdr);
7369 if (status)
7370 goto out;
7371 status = decode_layoutreturn(xdr, res);
7372out:
7373 return status;
7374}
7375
7376/*
7377 * Decode LAYOUTCOMMIT response
7378 */
7379static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7380 struct xdr_stream *xdr,
7381 void *data)
7382{
7383 struct nfs4_layoutcommit_res *res = data;
7384 struct compound_hdr hdr;
7385 int status;
7386
7387 status = decode_compound_hdr(xdr, &hdr);
7388 if (status)
7389 goto out;
7390 status = decode_sequence(xdr, &res->seq_res, rqstp);
7391 if (status)
7392 goto out;
7393 status = decode_putfh(xdr);
7394 if (status)
7395 goto out;
7396 status = decode_layoutcommit(xdr, rqstp, res);
7397 if (status)
7398 goto out;
7399 decode_getfattr(xdr, res->fattr, res->server);
7400out:
7401 return status;
7402}
7403
7404/*
7405 * Decode SECINFO_NO_NAME response
7406 */
7407static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7408 struct xdr_stream *xdr,
7409 void *data)
7410{
7411 struct nfs4_secinfo_res *res = data;
7412 struct compound_hdr hdr;
7413 int status;
7414
7415 status = decode_compound_hdr(xdr, &hdr);
7416 if (status)
7417 goto out;
7418 status = decode_sequence(xdr, &res->seq_res, rqstp);
7419 if (status)
7420 goto out;
7421 status = decode_putrootfh(xdr);
7422 if (status)
7423 goto out;
7424 status = decode_secinfo_no_name(xdr, res);
7425out:
7426 return status;
7427}
7428
7429/*
7430 * Decode TEST_STATEID response
7431 */
7432static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7433 struct xdr_stream *xdr,
7434 void *data)
7435{
7436 struct nfs41_test_stateid_res *res = data;
7437 struct compound_hdr hdr;
7438 int status;
7439
7440 status = decode_compound_hdr(xdr, &hdr);
7441 if (status)
7442 goto out;
7443 status = decode_sequence(xdr, &res->seq_res, rqstp);
7444 if (status)
7445 goto out;
7446 status = decode_test_stateid(xdr, res);
7447out:
7448 return status;
7449}
7450
7451/*
7452 * Decode FREE_STATEID response
7453 */
7454static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7455 struct xdr_stream *xdr,
7456 void *data)
7457{
7458 struct nfs41_free_stateid_res *res = data;
7459 struct compound_hdr hdr;
7460 int status;
7461
7462 status = decode_compound_hdr(xdr, &hdr);
7463 if (status)
7464 goto out;
7465 status = decode_sequence(xdr, &res->seq_res, rqstp);
7466 if (status)
7467 goto out;
7468 status = decode_free_stateid(xdr, res);
7469out:
7470 return status;
7471}
7472#endif /* CONFIG_NFS_V4_1 */
7473
7474/**
7475 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7476 * the local page cache.
7477 * @xdr: XDR stream where entry resides
7478 * @entry: buffer to fill in with entry data
7479 * @plus: boolean indicating whether this should be a readdirplus entry
7480 *
7481 * Returns zero if successful, otherwise a negative errno value is
7482 * returned.
7483 *
7484 * This function is not invoked during READDIR reply decoding, but
7485 * rather whenever an application invokes the getdents(2) system call
7486 * on a directory already in our cache.
7487 */
7488int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7489 bool plus)
7490{
7491 unsigned int savep;
7492 uint32_t bitmap[3] = {0};
7493 uint32_t len;
7494 uint64_t new_cookie;
7495 __be32 *p = xdr_inline_decode(xdr, 4);
7496 if (unlikely(!p))
7497 return -EAGAIN;
7498 if (*p == xdr_zero) {
7499 p = xdr_inline_decode(xdr, 4);
7500 if (unlikely(!p))
7501 return -EAGAIN;
7502 if (*p == xdr_zero)
7503 return -EAGAIN;
7504 entry->eof = 1;
7505 return -EBADCOOKIE;
7506 }
7507
7508 p = xdr_inline_decode(xdr, 12);
7509 if (unlikely(!p))
7510 return -EAGAIN;
7511 p = xdr_decode_hyper(p, &new_cookie);
7512 entry->len = be32_to_cpup(p);
7513
7514 p = xdr_inline_decode(xdr, entry->len);
7515 if (unlikely(!p))
7516 return -EAGAIN;
7517 entry->name = (const char *) p;
7518
7519 /*
7520 * In case the server doesn't return an inode number,
7521 * we fake one here. (We don't use inode number 0,
7522 * since glibc seems to choke on it...)
7523 */
7524 entry->ino = 1;
7525 entry->fattr->valid = 0;
7526
7527 if (decode_attr_bitmap(xdr, bitmap) < 0)
7528 return -EAGAIN;
7529
7530 if (decode_attr_length(xdr, &len, &savep) < 0)
7531 return -EAGAIN;
7532
7533 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7534 NULL, entry->server) < 0)
7535 return -EAGAIN;
7536 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7537 entry->ino = entry->fattr->mounted_on_fileid;
7538 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7539 entry->ino = entry->fattr->fileid;
7540
7541 entry->d_type = DT_UNKNOWN;
7542 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7543 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7544
7545 entry->cookie = new_cookie;
7546
7547 return 0;
7548}
7549
7550/*
7551 * We need to translate between nfs status return values and
7552 * the local errno values which may not be the same.
7553 */
7554static struct {
7555 int stat;
7556 int errno;
7557} nfs_errtbl[] = {
7558 { NFS4_OK, 0 },
7559 { NFS4ERR_PERM, -EPERM },
7560 { NFS4ERR_NOENT, -ENOENT },
7561 { NFS4ERR_IO, -errno_NFSERR_IO},
7562 { NFS4ERR_NXIO, -ENXIO },
7563 { NFS4ERR_ACCESS, -EACCES },
7564 { NFS4ERR_EXIST, -EEXIST },
7565 { NFS4ERR_XDEV, -EXDEV },
7566 { NFS4ERR_NOTDIR, -ENOTDIR },
7567 { NFS4ERR_ISDIR, -EISDIR },
7568 { NFS4ERR_INVAL, -EINVAL },
7569 { NFS4ERR_FBIG, -EFBIG },
7570 { NFS4ERR_NOSPC, -ENOSPC },
7571 { NFS4ERR_ROFS, -EROFS },
7572 { NFS4ERR_MLINK, -EMLINK },
7573 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7574 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7575 { NFS4ERR_DQUOT, -EDQUOT },
7576 { NFS4ERR_STALE, -ESTALE },
7577 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7578 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7579 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7580 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7581 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7582 { NFS4ERR_BADTYPE, -EBADTYPE },
7583 { NFS4ERR_LOCKED, -EAGAIN },
7584 { NFS4ERR_SYMLINK, -ELOOP },
7585 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7586 { NFS4ERR_DEADLOCK, -EDEADLK },
7587 { NFS4ERR_NOXATTR, -ENODATA },
7588 { NFS4ERR_XATTR2BIG, -E2BIG },
7589 { -1, -EIO }
7590};
7591
7592/*
7593 * Convert an NFS error code to a local one.
7594 * This one is used jointly by NFSv2 and NFSv3.
7595 */
7596static int
7597nfs4_stat_to_errno(int stat)
7598{
7599 int i;
7600 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7601 if (nfs_errtbl[i].stat == stat)
7602 return nfs_errtbl[i].errno;
7603 }
7604 if (stat <= 10000 || stat > 10100) {
7605 /* The server is looney tunes. */
7606 return -EREMOTEIO;
7607 }
7608 /* If we cannot translate the error, the recovery routines should
7609 * handle it.
7610 * Note: remaining NFSv4 error codes have values > 10000, so should
7611 * not conflict with native Linux error codes.
7612 */
7613 return -stat;
7614}
7615
7616#ifdef CONFIG_NFS_V4_2
7617#include "nfs42xdr.c"
7618#endif /* CONFIG_NFS_V4_2 */
7619
7620#define PROC(proc, argtype, restype) \
7621[NFSPROC4_CLNT_##proc] = { \
7622 .p_proc = NFSPROC4_COMPOUND, \
7623 .p_encode = nfs4_xdr_##argtype, \
7624 .p_decode = nfs4_xdr_##restype, \
7625 .p_arglen = NFS4_##argtype##_sz, \
7626 .p_replen = NFS4_##restype##_sz, \
7627 .p_statidx = NFSPROC4_CLNT_##proc, \
7628 .p_name = #proc, \
7629}
7630
7631#define STUB(proc) \
7632[NFSPROC4_CLNT_##proc] = { \
7633 .p_name = #proc, \
7634}
7635
7636#if defined(CONFIG_NFS_V4_1)
7637#define PROC41(proc, argtype, restype) \
7638 PROC(proc, argtype, restype)
7639#else
7640#define PROC41(proc, argtype, restype) \
7641 STUB(proc)
7642#endif
7643
7644#if defined(CONFIG_NFS_V4_2)
7645#define PROC42(proc, argtype, restype) \
7646 PROC(proc, argtype, restype)
7647#else
7648#define PROC42(proc, argtype, restype) \
7649 STUB(proc)
7650#endif
7651
7652const struct rpc_procinfo nfs4_procedures[] = {
7653 PROC(READ, enc_read, dec_read),
7654 PROC(WRITE, enc_write, dec_write),
7655 PROC(COMMIT, enc_commit, dec_commit),
7656 PROC(OPEN, enc_open, dec_open),
7657 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7658 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7659 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7660 PROC(CLOSE, enc_close, dec_close),
7661 PROC(SETATTR, enc_setattr, dec_setattr),
7662 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7663 PROC(RENEW, enc_renew, dec_renew),
7664 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7665 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7666 PROC(LOCK, enc_lock, dec_lock),
7667 PROC(LOCKT, enc_lockt, dec_lockt),
7668 PROC(LOCKU, enc_locku, dec_locku),
7669 PROC(ACCESS, enc_access, dec_access),
7670 PROC(GETATTR, enc_getattr, dec_getattr),
7671 PROC(LOOKUP, enc_lookup, dec_lookup),
7672 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7673 PROC(REMOVE, enc_remove, dec_remove),
7674 PROC(RENAME, enc_rename, dec_rename),
7675 PROC(LINK, enc_link, dec_link),
7676 PROC(SYMLINK, enc_symlink, dec_symlink),
7677 PROC(CREATE, enc_create, dec_create),
7678 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7679 PROC(STATFS, enc_statfs, dec_statfs),
7680 PROC(READLINK, enc_readlink, dec_readlink),
7681 PROC(READDIR, enc_readdir, dec_readdir),
7682 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7683 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7684 PROC(GETACL, enc_getacl, dec_getacl),
7685 PROC(SETACL, enc_setacl, dec_setacl),
7686 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7687 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7688 PROC(SECINFO, enc_secinfo, dec_secinfo),
7689 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7690 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7691 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7692 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7693 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7694 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7695 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7696 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7697 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7698 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7699 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7700 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7701 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7702 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7703 STUB(GETDEVICELIST),
7704 PROC41(BIND_CONN_TO_SESSION,
7705 enc_bind_conn_to_session, dec_bind_conn_to_session),
7706 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7707 PROC42(SEEK, enc_seek, dec_seek),
7708 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7709 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7710 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7711 PROC42(CLONE, enc_clone, dec_clone),
7712 PROC42(COPY, enc_copy, dec_copy),
7713 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7714 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7715 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7716 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7717 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7718 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7719 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7720 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7721 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7722};
7723
7724static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7725const struct rpc_version nfs_version4 = {
7726 .number = 4,
7727 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7728 .procs = nfs4_procedures,
7729 .counts = nfs_version4_counts,
7730};