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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#include <linux/fs_struct.h>
56
57#include "nfs4_fs.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
69static int nfs4_stat_to_errno(int);
70
71/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
72#ifdef DEBUG
73#define NFS4_MAXTAGLEN 20
74#else
75#define NFS4_MAXTAGLEN 0
76#endif
77
78/* lock,open owner id:
79 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
80 */
81#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
82#define lock_owner_id_maxsz (1 + 1 + 4)
83#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
84#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
86#define op_encode_hdr_maxsz (1)
87#define op_decode_hdr_maxsz (2)
88#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
90#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
92#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
93 (NFS4_FHSIZE >> 2))
94#define decode_putfh_maxsz (op_decode_hdr_maxsz)
95#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
96#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
97#define encode_getfh_maxsz (op_encode_hdr_maxsz)
98#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
99 ((3+NFS4_FHSIZE) >> 2))
100#define nfs4_fattr_bitmap_maxsz 4
101#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
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 + 3 + 3 + nfs4_owner_maxsz + \
117 nfs4_group_maxsz + nfs4_label_maxsz + \
118 decode_mdsthreshold_maxsz))
119#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
120 nfs4_fattr_value_maxsz)
121#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
122#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
123 1 + 2 + 1 + \
124 nfs4_owner_maxsz + \
125 nfs4_group_maxsz + \
126 nfs4_label_maxsz + \
127 4 + 4)
128#define encode_savefh_maxsz (op_encode_hdr_maxsz)
129#define decode_savefh_maxsz (op_decode_hdr_maxsz)
130#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
131#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
132#define encode_fsinfo_maxsz (encode_getattr_maxsz)
133/* The 5 accounts for the PNFS attributes, and assumes that at most three
134 * layout types will be returned.
135 */
136#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
137 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
138#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
139#define decode_renew_maxsz (op_decode_hdr_maxsz)
140#define encode_setclientid_maxsz \
141 (op_encode_hdr_maxsz + \
142 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
143 /* client name */ \
144 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
145 1 /* sc_prog */ + \
146 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
147 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
148 1) /* sc_cb_ident */
149#define decode_setclientid_maxsz \
150 (op_decode_hdr_maxsz + \
151 2 /* clientid */ + \
152 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
153 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
154 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
155#define encode_setclientid_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 3 + (NFS4_VERIFIER_SIZE >> 2))
158#define decode_setclientid_confirm_maxsz \
159 (op_decode_hdr_maxsz)
160#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
161#define decode_lookup_maxsz (op_decode_hdr_maxsz)
162#define encode_share_access_maxsz \
163 (2)
164#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
165#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
166#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
167#define encode_open_maxsz (op_encode_hdr_maxsz + \
168 2 + encode_share_access_maxsz + 2 + \
169 open_owner_id_maxsz + \
170 encode_opentype_maxsz + \
171 encode_claim_null_maxsz)
172#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
173#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
174 decode_ace_maxsz)
175#define decode_change_info_maxsz (5)
176#define decode_open_maxsz (op_decode_hdr_maxsz + \
177 decode_stateid_maxsz + \
178 decode_change_info_maxsz + 1 + \
179 nfs4_fattr_bitmap_maxsz + \
180 decode_delegation_maxsz)
181#define encode_open_confirm_maxsz \
182 (op_encode_hdr_maxsz + \
183 encode_stateid_maxsz + 1)
184#define decode_open_confirm_maxsz \
185 (op_decode_hdr_maxsz + \
186 decode_stateid_maxsz)
187#define encode_open_downgrade_maxsz \
188 (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 1 + \
190 encode_share_access_maxsz)
191#define decode_open_downgrade_maxsz \
192 (op_decode_hdr_maxsz + \
193 decode_stateid_maxsz)
194#define encode_close_maxsz (op_encode_hdr_maxsz + \
195 1 + encode_stateid_maxsz)
196#define decode_close_maxsz (op_decode_hdr_maxsz + \
197 decode_stateid_maxsz)
198#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
199 encode_stateid_maxsz + \
200 encode_attrs_maxsz)
201#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
202 nfs4_fattr_bitmap_maxsz)
203#define encode_read_maxsz (op_encode_hdr_maxsz + \
204 encode_stateid_maxsz + 3)
205#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
206#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
207 2 + encode_verifier_maxsz + 5 + \
208 nfs4_label_maxsz)
209#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
210 decode_verifier_maxsz)
211#define encode_readlink_maxsz (op_encode_hdr_maxsz)
212#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
213#define encode_write_maxsz (op_encode_hdr_maxsz + \
214 encode_stateid_maxsz + 4)
215#define decode_write_maxsz (op_decode_hdr_maxsz + \
216 2 + decode_verifier_maxsz)
217#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
218#define decode_commit_maxsz (op_decode_hdr_maxsz + \
219 decode_verifier_maxsz)
220#define encode_remove_maxsz (op_encode_hdr_maxsz + \
221 nfs4_name_maxsz)
222#define decode_remove_maxsz (op_decode_hdr_maxsz + \
223 decode_change_info_maxsz)
224#define encode_rename_maxsz (op_encode_hdr_maxsz + \
225 2 * nfs4_name_maxsz)
226#define decode_rename_maxsz (op_decode_hdr_maxsz + \
227 decode_change_info_maxsz + \
228 decode_change_info_maxsz)
229#define encode_link_maxsz (op_encode_hdr_maxsz + \
230 nfs4_name_maxsz)
231#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
232#define encode_lockowner_maxsz (7)
233#define encode_lock_maxsz (op_encode_hdr_maxsz + \
234 7 + \
235 1 + encode_stateid_maxsz + 1 + \
236 encode_lockowner_maxsz)
237#define decode_lock_denied_maxsz \
238 (8 + decode_lockowner_maxsz)
239#define decode_lock_maxsz (op_decode_hdr_maxsz + \
240 decode_lock_denied_maxsz)
241#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
242 encode_lockowner_maxsz)
243#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
244 decode_lock_denied_maxsz)
245#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
246 encode_stateid_maxsz + \
247 4)
248#define decode_locku_maxsz (op_decode_hdr_maxsz + \
249 decode_stateid_maxsz)
250#define encode_release_lockowner_maxsz \
251 (op_encode_hdr_maxsz + \
252 encode_lockowner_maxsz)
253#define decode_release_lockowner_maxsz \
254 (op_decode_hdr_maxsz)
255#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
256#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
257#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
258 1 + nfs4_name_maxsz + \
259 1 + \
260 nfs4_fattr_maxsz)
261#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
262#define encode_create_maxsz (op_encode_hdr_maxsz + \
263 1 + 2 + nfs4_name_maxsz + \
264 encode_attrs_maxsz)
265#define decode_create_maxsz (op_decode_hdr_maxsz + \
266 decode_change_info_maxsz + \
267 nfs4_fattr_bitmap_maxsz)
268#define encode_statfs_maxsz (encode_getattr_maxsz)
269#define decode_statfs_maxsz (decode_getattr_maxsz)
270#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
271#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
272#define encode_getacl_maxsz (encode_getattr_maxsz)
273#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
274 nfs4_fattr_bitmap_maxsz + 1)
275#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
276 encode_stateid_maxsz + 3)
277#define decode_setacl_maxsz (decode_setattr_maxsz)
278#define encode_fs_locations_maxsz \
279 (encode_getattr_maxsz)
280#define decode_fs_locations_maxsz \
281 (0)
282#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
283#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
284
285#if defined(CONFIG_NFS_V4_1)
286#define NFS4_MAX_MACHINE_NAME_LEN (64)
287#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
288 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
289
290#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
291 encode_verifier_maxsz + \
292 1 /* co_ownerid.len */ + \
293 /* eia_clientowner */ \
294 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
295 1 /* flags */ + \
296 1 /* spa_how */ + \
297 /* max is SP4_MACH_CRED (for now) */ + \
298 1 + NFS4_OP_MAP_NUM_WORDS + \
299 1 + NFS4_OP_MAP_NUM_WORDS + \
300 1 /* implementation id array of size 1 */ + \
301 1 /* nii_domain */ + \
302 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
303 1 /* nii_name */ + \
304 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
305 3 /* nii_date */)
306#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
307 2 /* eir_clientid */ + \
308 1 /* eir_sequenceid */ + \
309 1 /* eir_flags */ + \
310 1 /* spr_how */ + \
311 /* max is SP4_MACH_CRED (for now) */ + \
312 1 + NFS4_OP_MAP_NUM_WORDS + \
313 1 + NFS4_OP_MAP_NUM_WORDS + \
314 2 /* eir_server_owner.so_minor_id */ + \
315 /* eir_server_owner.so_major_id<> */ \
316 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
317 /* eir_server_scope<> */ \
318 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
319 1 /* eir_server_impl_id array length */ + \
320 1 /* nii_domain */ + \
321 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
322 1 /* nii_name */ + \
323 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
324 3 /* nii_date */)
325#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
326#define decode_channel_attrs_maxsz (6 + \
327 1 /* ca_rdma_ird.len */ + \
328 1 /* ca_rdma_ird */)
329#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
330 2 /* csa_clientid */ + \
331 1 /* csa_sequence */ + \
332 1 /* csa_flags */ + \
333 encode_channel_attrs_maxsz + \
334 encode_channel_attrs_maxsz + \
335 1 /* csa_cb_program */ + \
336 1 /* csa_sec_parms.len (1) */ + \
337 1 /* cb_secflavor (AUTH_SYS) */ + \
338 1 /* stamp */ + \
339 1 /* machinename.len */ + \
340 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
341 1 /* uid */ + \
342 1 /* gid */ + \
343 1 /* gids.len (0) */)
344#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
345 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
346 1 /* csr_sequence */ + \
347 1 /* csr_flags */ + \
348 decode_channel_attrs_maxsz + \
349 decode_channel_attrs_maxsz)
350#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
351 /* bctsa_sessid */ \
352 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
353 1 /* bctsa_dir */ + \
354 1 /* bctsa_use_conn_in_rdma_mode */)
355#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
356 /* bctsr_sessid */ \
357 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
358 1 /* bctsr_dir */ + \
359 1 /* bctsr_use_conn_in_rdma_mode */)
360#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
361#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
362#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
363#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
364#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
365 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
366#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
367 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
368#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
369#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
370#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
371 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
372 1 /* layout type */ + \
373 1 /* maxcount */ + \
374 1 /* bitmap size */ + \
375 1 /* notification bitmap length */ + \
376 1 /* notification bitmap, word 0 */)
377#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
378 1 /* layout type */ + \
379 1 /* opaque devaddr4 length */ + \
380 /* devaddr4 payload is read into page */ \
381 1 /* notification bitmap length */ + \
382 1 /* notification bitmap, word 0 */)
383#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
384 encode_stateid_maxsz)
385#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
386 decode_stateid_maxsz + \
387 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
388#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
389 2 /* offset */ + \
390 2 /* length */ + \
391 1 /* reclaim */ + \
392 encode_stateid_maxsz + \
393 1 /* new offset (true) */ + \
394 2 /* last byte written */ + \
395 1 /* nt_timechanged (false) */ + \
396 1 /* layoutupdate4 layout type */ + \
397 1 /* layoutupdate4 opaqueue len */)
398 /* the actual content of layoutupdate4 should
399 be allocated by drivers and spliced in
400 using xdr_write_pages */
401#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
402#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
403 encode_stateid_maxsz + \
404 1 + \
405 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
406#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
407 1 + decode_stateid_maxsz)
408#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
409#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
410#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
411 XDR_QUADLEN(NFS4_STATEID_SIZE))
412#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
413#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
414 XDR_QUADLEN(NFS4_STATEID_SIZE))
415#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
416#else /* CONFIG_NFS_V4_1 */
417#define encode_sequence_maxsz 0
418#define decode_sequence_maxsz 0
419#define encode_layoutreturn_maxsz 0
420#define decode_layoutreturn_maxsz 0
421#endif /* CONFIG_NFS_V4_1 */
422
423#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
424#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
425#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
426 encode_sequence_maxsz + \
427 encode_putfh_maxsz + \
428 encode_read_maxsz)
429#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
430 decode_sequence_maxsz + \
431 decode_putfh_maxsz + \
432 decode_read_maxsz)
433#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
434 encode_sequence_maxsz + \
435 encode_putfh_maxsz + \
436 encode_readlink_maxsz)
437#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
438 decode_sequence_maxsz + \
439 decode_putfh_maxsz + \
440 decode_readlink_maxsz)
441#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
442 encode_sequence_maxsz + \
443 encode_putfh_maxsz + \
444 encode_readdir_maxsz)
445#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
446 decode_sequence_maxsz + \
447 decode_putfh_maxsz + \
448 decode_readdir_maxsz)
449#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
450 encode_sequence_maxsz + \
451 encode_putfh_maxsz + \
452 encode_write_maxsz + \
453 encode_getattr_maxsz)
454#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
455 decode_sequence_maxsz + \
456 decode_putfh_maxsz + \
457 decode_write_maxsz + \
458 decode_getattr_maxsz)
459#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
460 encode_sequence_maxsz + \
461 encode_putfh_maxsz + \
462 encode_commit_maxsz)
463#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
464 decode_sequence_maxsz + \
465 decode_putfh_maxsz + \
466 decode_commit_maxsz)
467#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
468 encode_sequence_maxsz + \
469 encode_putfh_maxsz + \
470 encode_open_maxsz + \
471 encode_access_maxsz + \
472 encode_getfh_maxsz + \
473 encode_getattr_maxsz)
474#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
475 decode_sequence_maxsz + \
476 decode_putfh_maxsz + \
477 decode_open_maxsz + \
478 decode_access_maxsz + \
479 decode_getfh_maxsz + \
480 decode_getattr_maxsz)
481#define NFS4_enc_open_confirm_sz \
482 (compound_encode_hdr_maxsz + \
483 encode_putfh_maxsz + \
484 encode_open_confirm_maxsz)
485#define NFS4_dec_open_confirm_sz \
486 (compound_decode_hdr_maxsz + \
487 decode_putfh_maxsz + \
488 decode_open_confirm_maxsz)
489#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
490 encode_sequence_maxsz + \
491 encode_putfh_maxsz + \
492 encode_open_maxsz + \
493 encode_access_maxsz + \
494 encode_getattr_maxsz)
495#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
496 decode_sequence_maxsz + \
497 decode_putfh_maxsz + \
498 decode_open_maxsz + \
499 decode_access_maxsz + \
500 decode_getattr_maxsz)
501#define NFS4_enc_open_downgrade_sz \
502 (compound_encode_hdr_maxsz + \
503 encode_sequence_maxsz + \
504 encode_putfh_maxsz + \
505 encode_layoutreturn_maxsz + \
506 encode_open_downgrade_maxsz)
507#define NFS4_dec_open_downgrade_sz \
508 (compound_decode_hdr_maxsz + \
509 decode_sequence_maxsz + \
510 decode_putfh_maxsz + \
511 decode_layoutreturn_maxsz + \
512 decode_open_downgrade_maxsz)
513#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
514 encode_sequence_maxsz + \
515 encode_putfh_maxsz + \
516 encode_layoutreturn_maxsz + \
517 encode_close_maxsz + \
518 encode_getattr_maxsz)
519#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
520 decode_sequence_maxsz + \
521 decode_putfh_maxsz + \
522 decode_layoutreturn_maxsz + \
523 decode_close_maxsz + \
524 decode_getattr_maxsz)
525#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
526 encode_sequence_maxsz + \
527 encode_putfh_maxsz + \
528 encode_setattr_maxsz + \
529 encode_getattr_maxsz)
530#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
531 decode_sequence_maxsz + \
532 decode_putfh_maxsz + \
533 decode_setattr_maxsz + \
534 decode_getattr_maxsz)
535#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
536 encode_sequence_maxsz + \
537 encode_putfh_maxsz + \
538 encode_fsinfo_maxsz)
539#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
540 decode_sequence_maxsz + \
541 decode_putfh_maxsz + \
542 decode_fsinfo_maxsz)
543#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
544 encode_renew_maxsz)
545#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
546 decode_renew_maxsz)
547#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
548 encode_setclientid_maxsz)
549#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
550 decode_setclientid_maxsz)
551#define NFS4_enc_setclientid_confirm_sz \
552 (compound_encode_hdr_maxsz + \
553 encode_setclientid_confirm_maxsz)
554#define NFS4_dec_setclientid_confirm_sz \
555 (compound_decode_hdr_maxsz + \
556 decode_setclientid_confirm_maxsz)
557#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_lock_maxsz)
561#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
562 decode_sequence_maxsz + \
563 decode_putfh_maxsz + \
564 decode_lock_maxsz)
565#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
566 encode_sequence_maxsz + \
567 encode_putfh_maxsz + \
568 encode_lockt_maxsz)
569#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
570 decode_sequence_maxsz + \
571 decode_putfh_maxsz + \
572 decode_lockt_maxsz)
573#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
574 encode_sequence_maxsz + \
575 encode_putfh_maxsz + \
576 encode_locku_maxsz)
577#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
578 decode_sequence_maxsz + \
579 decode_putfh_maxsz + \
580 decode_locku_maxsz)
581#define NFS4_enc_release_lockowner_sz \
582 (compound_encode_hdr_maxsz + \
583 encode_lockowner_maxsz)
584#define NFS4_dec_release_lockowner_sz \
585 (compound_decode_hdr_maxsz + \
586 decode_lockowner_maxsz)
587#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
588 encode_sequence_maxsz + \
589 encode_putfh_maxsz + \
590 encode_access_maxsz + \
591 encode_getattr_maxsz)
592#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
593 decode_sequence_maxsz + \
594 decode_putfh_maxsz + \
595 decode_access_maxsz + \
596 decode_getattr_maxsz)
597#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putfh_maxsz + \
600 encode_getattr_maxsz + \
601 encode_renew_maxsz)
602#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
603 decode_sequence_maxsz + \
604 decode_putfh_maxsz + \
605 decode_getattr_maxsz + \
606 decode_renew_maxsz)
607#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
608 encode_sequence_maxsz + \
609 encode_putfh_maxsz + \
610 encode_lookup_maxsz + \
611 encode_getattr_maxsz + \
612 encode_getfh_maxsz)
613#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
614 decode_sequence_maxsz + \
615 decode_putfh_maxsz + \
616 decode_lookup_maxsz + \
617 decode_getattr_maxsz + \
618 decode_getfh_maxsz)
619#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putrootfh_maxsz + \
622 encode_getattr_maxsz + \
623 encode_getfh_maxsz)
624#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putrootfh_maxsz + \
627 decode_getattr_maxsz + \
628 decode_getfh_maxsz)
629#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_remove_maxsz)
633#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
634 decode_sequence_maxsz + \
635 decode_putfh_maxsz + \
636 decode_remove_maxsz)
637#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
638 encode_sequence_maxsz + \
639 encode_putfh_maxsz + \
640 encode_savefh_maxsz + \
641 encode_putfh_maxsz + \
642 encode_rename_maxsz)
643#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
644 decode_sequence_maxsz + \
645 decode_putfh_maxsz + \
646 decode_savefh_maxsz + \
647 decode_putfh_maxsz + \
648 decode_rename_maxsz)
649#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
650 encode_sequence_maxsz + \
651 encode_putfh_maxsz + \
652 encode_savefh_maxsz + \
653 encode_putfh_maxsz + \
654 encode_link_maxsz + \
655 encode_restorefh_maxsz + \
656 encode_getattr_maxsz)
657#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_savefh_maxsz + \
661 decode_putfh_maxsz + \
662 decode_link_maxsz + \
663 decode_restorefh_maxsz + \
664 decode_getattr_maxsz)
665#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
666 encode_sequence_maxsz + \
667 encode_putfh_maxsz + \
668 encode_symlink_maxsz + \
669 encode_getattr_maxsz + \
670 encode_getfh_maxsz)
671#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
672 decode_sequence_maxsz + \
673 decode_putfh_maxsz + \
674 decode_symlink_maxsz + \
675 decode_getattr_maxsz + \
676 decode_getfh_maxsz)
677#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
678 encode_sequence_maxsz + \
679 encode_putfh_maxsz + \
680 encode_create_maxsz + \
681 encode_getfh_maxsz + \
682 encode_getattr_maxsz)
683#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
684 decode_sequence_maxsz + \
685 decode_putfh_maxsz + \
686 decode_create_maxsz + \
687 decode_getfh_maxsz + \
688 decode_getattr_maxsz)
689#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
690 encode_sequence_maxsz + \
691 encode_putfh_maxsz + \
692 encode_getattr_maxsz)
693#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_putfh_maxsz + \
696 decode_getattr_maxsz)
697#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_statfs_maxsz)
701#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_statfs_maxsz)
705#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_getattr_maxsz)
709#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
710 decode_sequence_maxsz + \
711 decode_putfh_maxsz + \
712 decode_getattr_maxsz)
713#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
714 encode_sequence_maxsz + \
715 encode_putfh_maxsz + \
716 encode_layoutreturn_maxsz + \
717 encode_delegreturn_maxsz + \
718 encode_getattr_maxsz)
719#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
720 decode_sequence_maxsz + \
721 decode_putfh_maxsz + \
722 decode_layoutreturn_maxsz + \
723 decode_delegreturn_maxsz + \
724 decode_getattr_maxsz)
725#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
726 encode_sequence_maxsz + \
727 encode_putfh_maxsz + \
728 encode_getacl_maxsz)
729#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_getacl_maxsz)
733#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
734 encode_sequence_maxsz + \
735 encode_putfh_maxsz + \
736 encode_setacl_maxsz)
737#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_setacl_maxsz)
741#define NFS4_enc_fs_locations_sz \
742 (compound_encode_hdr_maxsz + \
743 encode_sequence_maxsz + \
744 encode_putfh_maxsz + \
745 encode_lookup_maxsz + \
746 encode_fs_locations_maxsz + \
747 encode_renew_maxsz)
748#define NFS4_dec_fs_locations_sz \
749 (compound_decode_hdr_maxsz + \
750 decode_sequence_maxsz + \
751 decode_putfh_maxsz + \
752 decode_lookup_maxsz + \
753 decode_fs_locations_maxsz + \
754 decode_renew_maxsz)
755#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
756 encode_sequence_maxsz + \
757 encode_putfh_maxsz + \
758 encode_secinfo_maxsz)
759#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
760 decode_sequence_maxsz + \
761 decode_putfh_maxsz + \
762 decode_secinfo_maxsz)
763#define NFS4_enc_fsid_present_sz \
764 (compound_encode_hdr_maxsz + \
765 encode_sequence_maxsz + \
766 encode_putfh_maxsz + \
767 encode_getfh_maxsz + \
768 encode_renew_maxsz)
769#define NFS4_dec_fsid_present_sz \
770 (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putfh_maxsz + \
773 decode_getfh_maxsz + \
774 decode_renew_maxsz)
775#if defined(CONFIG_NFS_V4_1)
776#define NFS4_enc_bind_conn_to_session_sz \
777 (compound_encode_hdr_maxsz + \
778 encode_bind_conn_to_session_maxsz)
779#define NFS4_dec_bind_conn_to_session_sz \
780 (compound_decode_hdr_maxsz + \
781 decode_bind_conn_to_session_maxsz)
782#define NFS4_enc_exchange_id_sz \
783 (compound_encode_hdr_maxsz + \
784 encode_exchange_id_maxsz)
785#define NFS4_dec_exchange_id_sz \
786 (compound_decode_hdr_maxsz + \
787 decode_exchange_id_maxsz)
788#define NFS4_enc_create_session_sz \
789 (compound_encode_hdr_maxsz + \
790 encode_create_session_maxsz)
791#define NFS4_dec_create_session_sz \
792 (compound_decode_hdr_maxsz + \
793 decode_create_session_maxsz)
794#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
795 encode_destroy_session_maxsz)
796#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
797 decode_destroy_session_maxsz)
798#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
799 encode_destroy_clientid_maxsz)
800#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
801 decode_destroy_clientid_maxsz)
802#define NFS4_enc_sequence_sz \
803 (compound_decode_hdr_maxsz + \
804 encode_sequence_maxsz)
805#define NFS4_dec_sequence_sz \
806 (compound_decode_hdr_maxsz + \
807 decode_sequence_maxsz)
808#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_putrootfh_maxsz + \
811 encode_fsinfo_maxsz)
812#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
813 decode_sequence_maxsz + \
814 decode_putrootfh_maxsz + \
815 decode_fsinfo_maxsz)
816#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
817 encode_sequence_maxsz + \
818 encode_reclaim_complete_maxsz)
819#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
820 decode_sequence_maxsz + \
821 decode_reclaim_complete_maxsz)
822#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
823 encode_sequence_maxsz +\
824 encode_getdeviceinfo_maxsz)
825#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
826 decode_sequence_maxsz + \
827 decode_getdeviceinfo_maxsz)
828#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz + \
830 encode_putfh_maxsz + \
831 encode_layoutget_maxsz)
832#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
833 decode_sequence_maxsz + \
834 decode_putfh_maxsz + \
835 decode_layoutget_maxsz)
836#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
837 encode_sequence_maxsz +\
838 encode_putfh_maxsz + \
839 encode_layoutcommit_maxsz + \
840 encode_getattr_maxsz)
841#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
842 decode_sequence_maxsz + \
843 decode_putfh_maxsz + \
844 decode_layoutcommit_maxsz + \
845 decode_getattr_maxsz)
846#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
847 encode_sequence_maxsz + \
848 encode_putfh_maxsz + \
849 encode_layoutreturn_maxsz)
850#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz + \
852 decode_putfh_maxsz + \
853 decode_layoutreturn_maxsz)
854#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
855 encode_sequence_maxsz + \
856 encode_putrootfh_maxsz +\
857 encode_secinfo_no_name_maxsz)
858#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
859 decode_sequence_maxsz + \
860 decode_putrootfh_maxsz + \
861 decode_secinfo_no_name_maxsz)
862#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
863 encode_sequence_maxsz + \
864 encode_test_stateid_maxsz)
865#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
866 decode_sequence_maxsz + \
867 decode_test_stateid_maxsz)
868#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
869 encode_sequence_maxsz + \
870 encode_free_stateid_maxsz)
871#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
872 decode_sequence_maxsz + \
873 decode_free_stateid_maxsz)
874
875const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
876 compound_encode_hdr_maxsz +
877 encode_sequence_maxsz +
878 encode_putfh_maxsz +
879 encode_getattr_maxsz) *
880 XDR_UNIT);
881
882const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
883 compound_decode_hdr_maxsz +
884 decode_sequence_maxsz +
885 decode_putfh_maxsz) *
886 XDR_UNIT);
887
888const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
889 compound_decode_hdr_maxsz +
890 decode_sequence_maxsz) *
891 XDR_UNIT);
892EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
893#endif /* CONFIG_NFS_V4_1 */
894
895static const umode_t nfs_type2fmt[] = {
896 [NF4BAD] = 0,
897 [NF4REG] = S_IFREG,
898 [NF4DIR] = S_IFDIR,
899 [NF4BLK] = S_IFBLK,
900 [NF4CHR] = S_IFCHR,
901 [NF4LNK] = S_IFLNK,
902 [NF4SOCK] = S_IFSOCK,
903 [NF4FIFO] = S_IFIFO,
904 [NF4ATTRDIR] = 0,
905 [NF4NAMEDATTR] = 0,
906};
907
908struct compound_hdr {
909 int32_t status;
910 uint32_t nops;
911 __be32 * nops_p;
912 uint32_t taglen;
913 char * tag;
914 uint32_t replen; /* expected reply words */
915 u32 minorversion;
916};
917
918static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
919{
920 __be32 *p = xdr_reserve_space(xdr, nbytes);
921 BUG_ON(!p);
922 return p;
923}
924
925static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
926{
927 __be32 *p;
928
929 p = xdr_reserve_space(xdr, len);
930 xdr_encode_opaque_fixed(p, buf, len);
931}
932
933static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
934{
935 __be32 *p;
936
937 p = reserve_space(xdr, 4 + len);
938 xdr_encode_opaque(p, str, len);
939}
940
941static void encode_uint32(struct xdr_stream *xdr, u32 n)
942{
943 __be32 *p;
944
945 p = reserve_space(xdr, 4);
946 *p = cpu_to_be32(n);
947}
948
949static void encode_uint64(struct xdr_stream *xdr, u64 n)
950{
951 __be32 *p;
952
953 p = reserve_space(xdr, 8);
954 xdr_encode_hyper(p, n);
955}
956
957static void encode_nfs4_seqid(struct xdr_stream *xdr,
958 const struct nfs_seqid *seqid)
959{
960 if (seqid != NULL)
961 encode_uint32(xdr, seqid->sequence->counter);
962 else
963 encode_uint32(xdr, 0);
964}
965
966static void encode_compound_hdr(struct xdr_stream *xdr,
967 struct rpc_rqst *req,
968 struct compound_hdr *hdr)
969{
970 __be32 *p;
971 struct rpc_auth *auth = req->rq_cred->cr_auth;
972
973 /* initialize running count of expected bytes in reply.
974 * NOTE: the replied tag SHOULD be the same is the one sent,
975 * but this is not required as a MUST for the server to do so. */
976 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
977
978 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
979 encode_string(xdr, hdr->taglen, hdr->tag);
980 p = reserve_space(xdr, 8);
981 *p++ = cpu_to_be32(hdr->minorversion);
982 hdr->nops_p = p;
983 *p = cpu_to_be32(hdr->nops);
984}
985
986static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
987 uint32_t replen,
988 struct compound_hdr *hdr)
989{
990 encode_uint32(xdr, op);
991 hdr->nops++;
992 hdr->replen += replen;
993}
994
995static void encode_nops(struct compound_hdr *hdr)
996{
997 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
998 *hdr->nops_p = htonl(hdr->nops);
999}
1000
1001static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1002{
1003 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1004}
1005
1006static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1007{
1008 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1009}
1010
1011static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1012 const struct nfs4_label *label,
1013 const struct nfs_server *server,
1014 bool excl_check, const umode_t *umask)
1015{
1016 char owner_name[IDMAP_NAMESZ];
1017 char owner_group[IDMAP_NAMESZ];
1018 int owner_namelen = 0;
1019 int owner_grouplen = 0;
1020 __be32 *p;
1021 unsigned i;
1022 uint32_t len = 0;
1023 uint32_t bmval_len;
1024 uint32_t bmval[3] = { 0 };
1025
1026 /*
1027 * We reserve enough space to write the entire attribute buffer at once.
1028 */
1029 if (iap->ia_valid & ATTR_SIZE) {
1030 bmval[0] |= FATTR4_WORD0_SIZE;
1031 len += 8;
1032 }
1033 if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
1034 umask = NULL;
1035 if (iap->ia_valid & ATTR_MODE) {
1036 if (umask) {
1037 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1038 len += 8;
1039 } else {
1040 bmval[1] |= FATTR4_WORD1_MODE;
1041 len += 4;
1042 }
1043 }
1044 if (iap->ia_valid & ATTR_UID) {
1045 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1046 if (owner_namelen < 0) {
1047 dprintk("nfs: couldn't resolve uid %d to string\n",
1048 from_kuid(&init_user_ns, iap->ia_uid));
1049 /* XXX */
1050 strcpy(owner_name, "nobody");
1051 owner_namelen = sizeof("nobody") - 1;
1052 /* goto out; */
1053 }
1054 bmval[1] |= FATTR4_WORD1_OWNER;
1055 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1056 }
1057 if (iap->ia_valid & ATTR_GID) {
1058 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1059 if (owner_grouplen < 0) {
1060 dprintk("nfs: couldn't resolve gid %d to string\n",
1061 from_kgid(&init_user_ns, iap->ia_gid));
1062 strcpy(owner_group, "nobody");
1063 owner_grouplen = sizeof("nobody") - 1;
1064 /* goto out; */
1065 }
1066 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1067 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1068 }
1069 if (iap->ia_valid & ATTR_ATIME_SET) {
1070 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1071 len += 16;
1072 } else if (iap->ia_valid & ATTR_ATIME) {
1073 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1074 len += 4;
1075 }
1076 if (iap->ia_valid & ATTR_MTIME_SET) {
1077 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1078 len += 16;
1079 } else if (iap->ia_valid & ATTR_MTIME) {
1080 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1081 len += 4;
1082 }
1083
1084 if (excl_check) {
1085 const u32 *excl_bmval = server->exclcreat_bitmask;
1086 bmval[0] &= excl_bmval[0];
1087 bmval[1] &= excl_bmval[1];
1088 bmval[2] &= excl_bmval[2];
1089
1090 if (!(excl_bmval[2] & FATTR4_WORD2_SECURITY_LABEL))
1091 label = NULL;
1092 }
1093
1094 if (label) {
1095 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1096 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1097 }
1098
1099 if (bmval[2] != 0)
1100 bmval_len = 3;
1101 else if (bmval[1] != 0)
1102 bmval_len = 2;
1103 else
1104 bmval_len = 1;
1105
1106 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1107
1108 *p++ = cpu_to_be32(bmval_len);
1109 for (i = 0; i < bmval_len; i++)
1110 *p++ = cpu_to_be32(bmval[i]);
1111 *p++ = cpu_to_be32(len);
1112
1113 if (bmval[0] & FATTR4_WORD0_SIZE)
1114 p = xdr_encode_hyper(p, iap->ia_size);
1115 if (bmval[1] & FATTR4_WORD1_MODE)
1116 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1117 if (bmval[1] & FATTR4_WORD1_OWNER)
1118 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1119 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1120 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1121 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1122 if (iap->ia_valid & ATTR_ATIME_SET) {
1123 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1124 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1125 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1126 } else
1127 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1128 }
1129 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1130 if (iap->ia_valid & ATTR_MTIME_SET) {
1131 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1132 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1133 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1134 } else
1135 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1136 }
1137 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1138 *p++ = cpu_to_be32(label->lfs);
1139 *p++ = cpu_to_be32(label->pi);
1140 *p++ = cpu_to_be32(label->len);
1141 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1142 }
1143 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1144 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1145 *p++ = cpu_to_be32(*umask);
1146 }
1147
1148/* out: */
1149}
1150
1151static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1152{
1153 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1154 encode_uint32(xdr, access);
1155}
1156
1157static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1158{
1159 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1160 encode_nfs4_seqid(xdr, arg->seqid);
1161 encode_nfs4_stateid(xdr, &arg->stateid);
1162}
1163
1164static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1165{
1166 __be32 *p;
1167
1168 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1169 p = reserve_space(xdr, 12);
1170 p = xdr_encode_hyper(p, args->offset);
1171 *p = cpu_to_be32(args->count);
1172}
1173
1174static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1175{
1176 __be32 *p;
1177
1178 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1179 encode_uint32(xdr, create->ftype);
1180
1181 switch (create->ftype) {
1182 case NF4LNK:
1183 p = reserve_space(xdr, 4);
1184 *p = cpu_to_be32(create->u.symlink.len);
1185 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1186 create->u.symlink.len);
1187 xdr->buf->flags |= XDRBUF_WRITE;
1188 break;
1189
1190 case NF4BLK: case NF4CHR:
1191 p = reserve_space(xdr, 8);
1192 *p++ = cpu_to_be32(create->u.device.specdata1);
1193 *p = cpu_to_be32(create->u.device.specdata2);
1194 break;
1195
1196 default:
1197 break;
1198 }
1199
1200 encode_string(xdr, create->name->len, create->name->name);
1201 encode_attrs(xdr, create->attrs, create->label, create->server, false,
1202 &create->umask);
1203}
1204
1205static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1206{
1207 __be32 *p;
1208
1209 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1210 p = reserve_space(xdr, 8);
1211 *p++ = cpu_to_be32(1);
1212 *p = cpu_to_be32(bitmap);
1213}
1214
1215static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1216{
1217 __be32 *p;
1218
1219 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1220 p = reserve_space(xdr, 12);
1221 *p++ = cpu_to_be32(2);
1222 *p++ = cpu_to_be32(bm0);
1223 *p = cpu_to_be32(bm1);
1224}
1225
1226static void
1227encode_getattr_three(struct xdr_stream *xdr,
1228 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1229 struct compound_hdr *hdr)
1230{
1231 __be32 *p;
1232
1233 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1234 if (bm2) {
1235 p = reserve_space(xdr, 16);
1236 *p++ = cpu_to_be32(3);
1237 *p++ = cpu_to_be32(bm0);
1238 *p++ = cpu_to_be32(bm1);
1239 *p = cpu_to_be32(bm2);
1240 } else if (bm1) {
1241 p = reserve_space(xdr, 12);
1242 *p++ = cpu_to_be32(2);
1243 *p++ = cpu_to_be32(bm0);
1244 *p = cpu_to_be32(bm1);
1245 } else {
1246 p = reserve_space(xdr, 8);
1247 *p++ = cpu_to_be32(1);
1248 *p = cpu_to_be32(bm0);
1249 }
1250}
1251
1252static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1253{
1254 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1255 bitmask[1] & nfs4_fattr_bitmap[1],
1256 bitmask[2] & nfs4_fattr_bitmap[2],
1257 hdr);
1258}
1259
1260static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1261 const u32 *open_bitmap,
1262 struct compound_hdr *hdr)
1263{
1264 encode_getattr_three(xdr,
1265 bitmask[0] & open_bitmap[0],
1266 bitmask[1] & open_bitmap[1],
1267 bitmask[2] & open_bitmap[2],
1268 hdr);
1269}
1270
1271static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1272{
1273 encode_getattr_three(xdr,
1274 bitmask[0] & nfs4_fsinfo_bitmap[0],
1275 bitmask[1] & nfs4_fsinfo_bitmap[1],
1276 bitmask[2] & nfs4_fsinfo_bitmap[2],
1277 hdr);
1278}
1279
1280static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1281{
1282 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1283 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1284}
1285
1286static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1287{
1288 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1289}
1290
1291static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1292{
1293 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1294 encode_string(xdr, name->len, name->name);
1295}
1296
1297static inline int nfs4_lock_type(struct file_lock *fl, int block)
1298{
1299 if (fl->fl_type == F_RDLCK)
1300 return block ? NFS4_READW_LT : NFS4_READ_LT;
1301 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1302}
1303
1304static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1305{
1306 if (fl->fl_end == OFFSET_MAX)
1307 return ~(uint64_t)0;
1308 return fl->fl_end - fl->fl_start + 1;
1309}
1310
1311static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1312{
1313 __be32 *p;
1314
1315 p = reserve_space(xdr, 32);
1316 p = xdr_encode_hyper(p, lowner->clientid);
1317 *p++ = cpu_to_be32(20);
1318 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1319 *p++ = cpu_to_be32(lowner->s_dev);
1320 xdr_encode_hyper(p, lowner->id);
1321}
1322
1323/*
1324 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1325 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1326 */
1327static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1328{
1329 __be32 *p;
1330
1331 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1332 p = reserve_space(xdr, 28);
1333 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1334 *p++ = cpu_to_be32(args->reclaim);
1335 p = xdr_encode_hyper(p, args->fl->fl_start);
1336 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1337 *p = cpu_to_be32(args->new_lock_owner);
1338 if (args->new_lock_owner){
1339 encode_nfs4_seqid(xdr, args->open_seqid);
1340 encode_nfs4_stateid(xdr, &args->open_stateid);
1341 encode_nfs4_seqid(xdr, args->lock_seqid);
1342 encode_lockowner(xdr, &args->lock_owner);
1343 }
1344 else {
1345 encode_nfs4_stateid(xdr, &args->lock_stateid);
1346 encode_nfs4_seqid(xdr, args->lock_seqid);
1347 }
1348}
1349
1350static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1351{
1352 __be32 *p;
1353
1354 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1355 p = reserve_space(xdr, 20);
1356 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1357 p = xdr_encode_hyper(p, args->fl->fl_start);
1358 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1359 encode_lockowner(xdr, &args->lock_owner);
1360}
1361
1362static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1363{
1364 __be32 *p;
1365
1366 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1367 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1368 encode_nfs4_seqid(xdr, args->seqid);
1369 encode_nfs4_stateid(xdr, &args->stateid);
1370 p = reserve_space(xdr, 16);
1371 p = xdr_encode_hyper(p, args->fl->fl_start);
1372 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1373}
1374
1375static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1376{
1377 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1378 encode_lockowner(xdr, lowner);
1379}
1380
1381static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1382{
1383 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1384 encode_string(xdr, name->len, name->name);
1385}
1386
1387static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1388{
1389 __be32 *p;
1390
1391 p = reserve_space(xdr, 8);
1392 *p++ = cpu_to_be32(share_access);
1393 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1394}
1395
1396static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1397{
1398 __be32 *p;
1399 /*
1400 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1401 * owner 4 = 32
1402 */
1403 encode_nfs4_seqid(xdr, arg->seqid);
1404 encode_share_access(xdr, arg->share_access);
1405 p = reserve_space(xdr, 36);
1406 p = xdr_encode_hyper(p, arg->clientid);
1407 *p++ = cpu_to_be32(24);
1408 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1409 *p++ = cpu_to_be32(arg->server->s_dev);
1410 *p++ = cpu_to_be32(arg->id.uniquifier);
1411 xdr_encode_hyper(p, arg->id.create_time);
1412}
1413
1414static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1415{
1416 __be32 *p;
1417
1418 p = reserve_space(xdr, 4);
1419 switch(arg->createmode) {
1420 case NFS4_CREATE_UNCHECKED:
1421 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1422 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false,
1423 &arg->umask);
1424 break;
1425 case NFS4_CREATE_GUARDED:
1426 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1427 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false,
1428 &arg->umask);
1429 break;
1430 case NFS4_CREATE_EXCLUSIVE:
1431 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1432 encode_nfs4_verifier(xdr, &arg->u.verifier);
1433 break;
1434 case NFS4_CREATE_EXCLUSIVE4_1:
1435 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1436 encode_nfs4_verifier(xdr, &arg->u.verifier);
1437 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true,
1438 &arg->umask);
1439 }
1440}
1441
1442static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1443{
1444 __be32 *p;
1445
1446 p = reserve_space(xdr, 4);
1447 switch (arg->open_flags & O_CREAT) {
1448 case 0:
1449 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1450 break;
1451 default:
1452 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1453 encode_createmode(xdr, arg);
1454 }
1455}
1456
1457static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1458{
1459 __be32 *p;
1460
1461 p = reserve_space(xdr, 4);
1462 switch (delegation_type) {
1463 case 0:
1464 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1465 break;
1466 case FMODE_READ:
1467 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1468 break;
1469 case FMODE_WRITE|FMODE_READ:
1470 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1471 break;
1472 default:
1473 BUG();
1474 }
1475}
1476
1477static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1478{
1479 __be32 *p;
1480
1481 p = reserve_space(xdr, 4);
1482 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1483 encode_string(xdr, name->len, name->name);
1484}
1485
1486static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1487{
1488 __be32 *p;
1489
1490 p = reserve_space(xdr, 4);
1491 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1492 encode_delegation_type(xdr, type);
1493}
1494
1495static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1496{
1497 __be32 *p;
1498
1499 p = reserve_space(xdr, 4);
1500 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1501 encode_nfs4_stateid(xdr, stateid);
1502 encode_string(xdr, name->len, name->name);
1503}
1504
1505static inline void encode_claim_fh(struct xdr_stream *xdr)
1506{
1507 __be32 *p;
1508
1509 p = reserve_space(xdr, 4);
1510 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1511}
1512
1513static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1514{
1515 __be32 *p;
1516
1517 p = reserve_space(xdr, 4);
1518 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1519 encode_nfs4_stateid(xdr, stateid);
1520}
1521
1522static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1523{
1524 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1525 encode_openhdr(xdr, arg);
1526 encode_opentype(xdr, arg);
1527 switch (arg->claim) {
1528 case NFS4_OPEN_CLAIM_NULL:
1529 encode_claim_null(xdr, arg->name);
1530 break;
1531 case NFS4_OPEN_CLAIM_PREVIOUS:
1532 encode_claim_previous(xdr, arg->u.delegation_type);
1533 break;
1534 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1535 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1536 break;
1537 case NFS4_OPEN_CLAIM_FH:
1538 encode_claim_fh(xdr);
1539 break;
1540 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1541 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1542 break;
1543 default:
1544 BUG();
1545 }
1546}
1547
1548static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1549{
1550 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1551 encode_nfs4_stateid(xdr, arg->stateid);
1552 encode_nfs4_seqid(xdr, arg->seqid);
1553}
1554
1555static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1556{
1557 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1558 encode_nfs4_stateid(xdr, &arg->stateid);
1559 encode_nfs4_seqid(xdr, arg->seqid);
1560 encode_share_access(xdr, arg->share_access);
1561}
1562
1563static void
1564encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1565{
1566 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1567 encode_string(xdr, fh->size, fh->data);
1568}
1569
1570static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1571{
1572 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1573}
1574
1575static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1576 struct compound_hdr *hdr)
1577{
1578 __be32 *p;
1579
1580 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1581 encode_nfs4_stateid(xdr, &args->stateid);
1582
1583 p = reserve_space(xdr, 12);
1584 p = xdr_encode_hyper(p, args->offset);
1585 *p = cpu_to_be32(args->count);
1586}
1587
1588static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1589{
1590 uint32_t attrs[3] = {
1591 FATTR4_WORD0_RDATTR_ERROR,
1592 FATTR4_WORD1_MOUNTED_ON_FILEID,
1593 };
1594 uint32_t dircount = readdir->count >> 1;
1595 __be32 *p, verf[2];
1596 uint32_t attrlen = 0;
1597 unsigned int i;
1598
1599 if (readdir->plus) {
1600 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1601 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1602 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1603 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1604 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1605 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1606 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1607 dircount >>= 1;
1608 }
1609 /* Use mounted_on_fileid only if the server supports it */
1610 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1611 attrs[0] |= FATTR4_WORD0_FILEID;
1612 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1613 attrs[i] &= readdir->bitmask[i];
1614 if (attrs[i] != 0)
1615 attrlen = i+1;
1616 }
1617
1618 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1619 encode_uint64(xdr, readdir->cookie);
1620 encode_nfs4_verifier(xdr, &readdir->verifier);
1621 p = reserve_space(xdr, 12 + (attrlen << 2));
1622 *p++ = cpu_to_be32(dircount);
1623 *p++ = cpu_to_be32(readdir->count);
1624 *p++ = cpu_to_be32(attrlen);
1625 for (i = 0; i < attrlen; i++)
1626 *p++ = cpu_to_be32(attrs[i]);
1627 memcpy(verf, readdir->verifier.data, sizeof(verf));
1628
1629 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1630 __func__,
1631 (unsigned long long)readdir->cookie,
1632 verf[0], verf[1],
1633 attrs[0] & readdir->bitmask[0],
1634 attrs[1] & readdir->bitmask[1],
1635 attrs[2] & readdir->bitmask[2]);
1636}
1637
1638static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1639{
1640 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1641}
1642
1643static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1644{
1645 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1646 encode_string(xdr, name->len, name->name);
1647}
1648
1649static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1650{
1651 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1652 encode_string(xdr, oldname->len, oldname->name);
1653 encode_string(xdr, newname->len, newname->name);
1654}
1655
1656static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1657 struct compound_hdr *hdr)
1658{
1659 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1660 encode_uint64(xdr, clid);
1661}
1662
1663static void
1664encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1665{
1666 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1667}
1668
1669static void
1670encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1671{
1672 __be32 *p;
1673
1674 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1675 encode_nfs4_stateid(xdr, &zero_stateid);
1676 p = reserve_space(xdr, 2*4);
1677 *p++ = cpu_to_be32(1);
1678 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1679 p = reserve_space(xdr, 4);
1680 *p = cpu_to_be32(arg->acl_len);
1681 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1682}
1683
1684static void
1685encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1686{
1687 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1688}
1689
1690static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1691{
1692 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1693 encode_nfs4_stateid(xdr, &arg->stateid);
1694 encode_attrs(xdr, arg->iap, arg->label, server, false, NULL);
1695}
1696
1697static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1698{
1699 __be32 *p;
1700
1701 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1702 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1703
1704 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1705 setclientid->sc_clnt->cl_owner_id);
1706 p = reserve_space(xdr, 4);
1707 *p = cpu_to_be32(setclientid->sc_prog);
1708 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1709 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1710 p = reserve_space(xdr, 4);
1711 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1712}
1713
1714static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1715{
1716 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1717 decode_setclientid_confirm_maxsz, hdr);
1718 encode_uint64(xdr, arg->clientid);
1719 encode_nfs4_verifier(xdr, &arg->confirm);
1720}
1721
1722static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1723 struct compound_hdr *hdr)
1724{
1725 __be32 *p;
1726
1727 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1728 encode_nfs4_stateid(xdr, &args->stateid);
1729
1730 p = reserve_space(xdr, 16);
1731 p = xdr_encode_hyper(p, args->offset);
1732 *p++ = cpu_to_be32(args->stable);
1733 *p = cpu_to_be32(args->count);
1734
1735 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1736}
1737
1738static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1739{
1740 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1741 encode_nfs4_stateid(xdr, stateid);
1742}
1743
1744static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1745{
1746 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1747 encode_string(xdr, name->len, name->name);
1748}
1749
1750#if defined(CONFIG_NFS_V4_1)
1751/* NFSv4.1 operations */
1752static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1753 struct nfs41_bind_conn_to_session_args *args,
1754 struct compound_hdr *hdr)
1755{
1756 __be32 *p;
1757
1758 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1759 decode_bind_conn_to_session_maxsz, hdr);
1760 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1761 p = xdr_reserve_space(xdr, 8);
1762 *p++ = cpu_to_be32(args->dir);
1763 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1764}
1765
1766static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
1767{
1768 unsigned int i;
1769 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1770 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1771 encode_uint32(xdr, op_map->u.words[i]);
1772}
1773
1774static void encode_exchange_id(struct xdr_stream *xdr,
1775 struct nfs41_exchange_id_args *args,
1776 struct compound_hdr *hdr)
1777{
1778 __be32 *p;
1779 char impl_name[IMPL_NAME_LIMIT];
1780 int len = 0;
1781
1782 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1783 encode_nfs4_verifier(xdr, args->verifier);
1784
1785 encode_string(xdr, strlen(args->client->cl_owner_id),
1786 args->client->cl_owner_id);
1787
1788 encode_uint32(xdr, args->flags);
1789 encode_uint32(xdr, args->state_protect.how);
1790
1791 switch (args->state_protect.how) {
1792 case SP4_NONE:
1793 break;
1794 case SP4_MACH_CRED:
1795 encode_op_map(xdr, &args->state_protect.enforce);
1796 encode_op_map(xdr, &args->state_protect.allow);
1797 break;
1798 default:
1799 WARN_ON_ONCE(1);
1800 break;
1801 }
1802
1803 if (send_implementation_id &&
1804 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1805 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1806 <= sizeof(impl_name) + 1)
1807 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1808 utsname()->sysname, utsname()->release,
1809 utsname()->version, utsname()->machine);
1810
1811 if (len > 0) {
1812 encode_uint32(xdr, 1); /* implementation id array length=1 */
1813
1814 encode_string(xdr,
1815 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1816 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1817 encode_string(xdr, len, impl_name);
1818 /* just send zeros for nii_date - the date is in nii_name */
1819 p = reserve_space(xdr, 12);
1820 p = xdr_encode_hyper(p, 0);
1821 *p = cpu_to_be32(0);
1822 } else
1823 encode_uint32(xdr, 0); /* implementation id array length=0 */
1824}
1825
1826static void encode_create_session(struct xdr_stream *xdr,
1827 struct nfs41_create_session_args *args,
1828 struct compound_hdr *hdr)
1829{
1830 __be32 *p;
1831 struct nfs_client *clp = args->client;
1832 struct rpc_clnt *clnt = clp->cl_rpcclient;
1833 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1834 u32 max_resp_sz_cached;
1835
1836 /*
1837 * Assumes OPEN is the biggest non-idempotent compound.
1838 * 2 is the verifier.
1839 */
1840 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1841 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1842
1843 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1844 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1845 p = xdr_encode_hyper(p, args->clientid);
1846 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1847 *p++ = cpu_to_be32(args->flags); /*flags */
1848
1849 /* Fore Channel */
1850 *p++ = cpu_to_be32(0); /* header padding size */
1851 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1852 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1853 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1854 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1855 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1856 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1857
1858 /* Back Channel */
1859 *p++ = cpu_to_be32(0); /* header padding size */
1860 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1861 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1862 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1863 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1864 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1865 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1866
1867 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1868 *p++ = cpu_to_be32(1);
1869 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1870
1871 /* authsys_parms rfc1831 */
1872 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1873 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1874 *p++ = cpu_to_be32(0); /* UID */
1875 *p++ = cpu_to_be32(0); /* GID */
1876 *p = cpu_to_be32(0); /* No more gids */
1877}
1878
1879static void encode_destroy_session(struct xdr_stream *xdr,
1880 struct nfs4_session *session,
1881 struct compound_hdr *hdr)
1882{
1883 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1884 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1885}
1886
1887static void encode_destroy_clientid(struct xdr_stream *xdr,
1888 uint64_t clientid,
1889 struct compound_hdr *hdr)
1890{
1891 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1892 encode_uint64(xdr, clientid);
1893}
1894
1895static void encode_reclaim_complete(struct xdr_stream *xdr,
1896 struct nfs41_reclaim_complete_args *args,
1897 struct compound_hdr *hdr)
1898{
1899 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1900 encode_uint32(xdr, args->one_fs);
1901}
1902#endif /* CONFIG_NFS_V4_1 */
1903
1904static void encode_sequence(struct xdr_stream *xdr,
1905 const struct nfs4_sequence_args *args,
1906 struct compound_hdr *hdr)
1907{
1908#if defined(CONFIG_NFS_V4_1)
1909 struct nfs4_session *session;
1910 struct nfs4_slot_table *tp;
1911 struct nfs4_slot *slot = args->sa_slot;
1912 __be32 *p;
1913
1914 tp = slot->table;
1915 session = tp->session;
1916 if (!session)
1917 return;
1918
1919 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1920
1921 /*
1922 * Sessionid + seqid + slotid + max slotid + cache_this
1923 */
1924 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1925 "max_slotid=%d cache_this=%d\n",
1926 __func__,
1927 ((u32 *)session->sess_id.data)[0],
1928 ((u32 *)session->sess_id.data)[1],
1929 ((u32 *)session->sess_id.data)[2],
1930 ((u32 *)session->sess_id.data)[3],
1931 slot->seq_nr, slot->slot_nr,
1932 tp->highest_used_slotid, args->sa_cache_this);
1933 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1934 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1935 *p++ = cpu_to_be32(slot->seq_nr);
1936 *p++ = cpu_to_be32(slot->slot_nr);
1937 *p++ = cpu_to_be32(tp->highest_used_slotid);
1938 *p = cpu_to_be32(args->sa_cache_this);
1939#endif /* CONFIG_NFS_V4_1 */
1940}
1941
1942#ifdef CONFIG_NFS_V4_1
1943static void
1944encode_getdeviceinfo(struct xdr_stream *xdr,
1945 const struct nfs4_getdeviceinfo_args *args,
1946 struct compound_hdr *hdr)
1947{
1948 __be32 *p;
1949
1950 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1951 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1952 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1953 NFS4_DEVICEID4_SIZE);
1954 *p++ = cpu_to_be32(args->pdev->layout_type);
1955 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1956
1957 p = reserve_space(xdr, 4 + 4);
1958 *p++ = cpu_to_be32(1); /* bitmap length */
1959 *p++ = cpu_to_be32(args->notify_types);
1960}
1961
1962static void
1963encode_layoutget(struct xdr_stream *xdr,
1964 const struct nfs4_layoutget_args *args,
1965 struct compound_hdr *hdr)
1966{
1967 __be32 *p;
1968
1969 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1970 p = reserve_space(xdr, 36);
1971 *p++ = cpu_to_be32(0); /* Signal layout available */
1972 *p++ = cpu_to_be32(args->type);
1973 *p++ = cpu_to_be32(args->range.iomode);
1974 p = xdr_encode_hyper(p, args->range.offset);
1975 p = xdr_encode_hyper(p, args->range.length);
1976 p = xdr_encode_hyper(p, args->minlength);
1977 encode_nfs4_stateid(xdr, &args->stateid);
1978 encode_uint32(xdr, args->maxcount);
1979
1980 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1981 __func__,
1982 args->type,
1983 args->range.iomode,
1984 (unsigned long)args->range.offset,
1985 (unsigned long)args->range.length,
1986 args->maxcount);
1987}
1988
1989static int
1990encode_layoutcommit(struct xdr_stream *xdr,
1991 struct inode *inode,
1992 struct nfs4_layoutcommit_args *args,
1993 struct compound_hdr *hdr)
1994{
1995 __be32 *p;
1996
1997 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1998 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1999
2000 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2001 p = reserve_space(xdr, 20);
2002 /* Only whole file layouts */
2003 p = xdr_encode_hyper(p, 0); /* offset */
2004 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2005 *p = cpu_to_be32(0); /* reclaim */
2006 encode_nfs4_stateid(xdr, &args->stateid);
2007 if (args->lastbytewritten != U64_MAX) {
2008 p = reserve_space(xdr, 20);
2009 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2010 p = xdr_encode_hyper(p, args->lastbytewritten);
2011 } else {
2012 p = reserve_space(xdr, 12);
2013 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2014 }
2015 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2016 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2017
2018 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
2019 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
2020 NFS_I(inode)->layout, xdr, args);
2021 } else {
2022 encode_uint32(xdr, args->layoutupdate_len);
2023 if (args->layoutupdate_pages) {
2024 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2025 args->layoutupdate_len);
2026 }
2027 }
2028
2029 return 0;
2030}
2031
2032static void
2033encode_layoutreturn(struct xdr_stream *xdr,
2034 const struct nfs4_layoutreturn_args *args,
2035 struct compound_hdr *hdr)
2036{
2037 const struct pnfs_layoutdriver_type *lr_ops = NFS_SERVER(args->inode)->pnfs_curr_ld;
2038 __be32 *p;
2039
2040 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2041 p = reserve_space(xdr, 16);
2042 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2043 *p++ = cpu_to_be32(args->layout_type);
2044 *p++ = cpu_to_be32(args->range.iomode);
2045 *p = cpu_to_be32(RETURN_FILE);
2046 p = reserve_space(xdr, 16);
2047 p = xdr_encode_hyper(p, args->range.offset);
2048 p = xdr_encode_hyper(p, args->range.length);
2049 spin_lock(&args->inode->i_lock);
2050 encode_nfs4_stateid(xdr, &args->stateid);
2051 spin_unlock(&args->inode->i_lock);
2052 if (args->ld_private->ops && args->ld_private->ops->encode)
2053 args->ld_private->ops->encode(xdr, args, args->ld_private);
2054 else if (lr_ops->encode_layoutreturn)
2055 lr_ops->encode_layoutreturn(xdr, args);
2056 else
2057 encode_uint32(xdr, 0);
2058}
2059
2060static int
2061encode_secinfo_no_name(struct xdr_stream *xdr,
2062 const struct nfs41_secinfo_no_name_args *args,
2063 struct compound_hdr *hdr)
2064{
2065 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2066 encode_uint32(xdr, args->style);
2067 return 0;
2068}
2069
2070static void encode_test_stateid(struct xdr_stream *xdr,
2071 struct nfs41_test_stateid_args *args,
2072 struct compound_hdr *hdr)
2073{
2074 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2075 encode_uint32(xdr, 1);
2076 encode_nfs4_stateid(xdr, args->stateid);
2077}
2078
2079static void encode_free_stateid(struct xdr_stream *xdr,
2080 struct nfs41_free_stateid_args *args,
2081 struct compound_hdr *hdr)
2082{
2083 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2084 encode_nfs4_stateid(xdr, &args->stateid);
2085}
2086#else
2087static inline void
2088encode_layoutreturn(struct xdr_stream *xdr,
2089 const struct nfs4_layoutreturn_args *args,
2090 struct compound_hdr *hdr)
2091{
2092}
2093#endif /* CONFIG_NFS_V4_1 */
2094
2095/*
2096 * END OF "GENERIC" ENCODE ROUTINES.
2097 */
2098
2099static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2100{
2101#if defined(CONFIG_NFS_V4_1)
2102 struct nfs4_session *session = args->sa_slot->table->session;
2103 if (session)
2104 return session->clp->cl_mvops->minor_version;
2105#endif /* CONFIG_NFS_V4_1 */
2106 return 0;
2107}
2108
2109/*
2110 * Encode an ACCESS request
2111 */
2112static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2113 const struct nfs4_accessargs *args)
2114{
2115 struct compound_hdr hdr = {
2116 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2117 };
2118
2119 encode_compound_hdr(xdr, req, &hdr);
2120 encode_sequence(xdr, &args->seq_args, &hdr);
2121 encode_putfh(xdr, args->fh, &hdr);
2122 encode_access(xdr, args->access, &hdr);
2123 encode_getfattr(xdr, args->bitmask, &hdr);
2124 encode_nops(&hdr);
2125}
2126
2127/*
2128 * Encode LOOKUP request
2129 */
2130static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2131 const struct nfs4_lookup_arg *args)
2132{
2133 struct compound_hdr hdr = {
2134 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2135 };
2136
2137 encode_compound_hdr(xdr, req, &hdr);
2138 encode_sequence(xdr, &args->seq_args, &hdr);
2139 encode_putfh(xdr, args->dir_fh, &hdr);
2140 encode_lookup(xdr, args->name, &hdr);
2141 encode_getfh(xdr, &hdr);
2142 encode_getfattr(xdr, args->bitmask, &hdr);
2143 encode_nops(&hdr);
2144}
2145
2146/*
2147 * Encode LOOKUP_ROOT request
2148 */
2149static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2150 struct xdr_stream *xdr,
2151 const struct nfs4_lookup_root_arg *args)
2152{
2153 struct compound_hdr hdr = {
2154 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2155 };
2156
2157 encode_compound_hdr(xdr, req, &hdr);
2158 encode_sequence(xdr, &args->seq_args, &hdr);
2159 encode_putrootfh(xdr, &hdr);
2160 encode_getfh(xdr, &hdr);
2161 encode_getfattr(xdr, args->bitmask, &hdr);
2162 encode_nops(&hdr);
2163}
2164
2165/*
2166 * Encode REMOVE request
2167 */
2168static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2169 const struct nfs_removeargs *args)
2170{
2171 struct compound_hdr hdr = {
2172 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2173 };
2174
2175 encode_compound_hdr(xdr, req, &hdr);
2176 encode_sequence(xdr, &args->seq_args, &hdr);
2177 encode_putfh(xdr, args->fh, &hdr);
2178 encode_remove(xdr, &args->name, &hdr);
2179 encode_nops(&hdr);
2180}
2181
2182/*
2183 * Encode RENAME request
2184 */
2185static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2186 const struct nfs_renameargs *args)
2187{
2188 struct compound_hdr hdr = {
2189 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2190 };
2191
2192 encode_compound_hdr(xdr, req, &hdr);
2193 encode_sequence(xdr, &args->seq_args, &hdr);
2194 encode_putfh(xdr, args->old_dir, &hdr);
2195 encode_savefh(xdr, &hdr);
2196 encode_putfh(xdr, args->new_dir, &hdr);
2197 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2198 encode_nops(&hdr);
2199}
2200
2201/*
2202 * Encode LINK request
2203 */
2204static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2205 const struct nfs4_link_arg *args)
2206{
2207 struct compound_hdr hdr = {
2208 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2209 };
2210
2211 encode_compound_hdr(xdr, req, &hdr);
2212 encode_sequence(xdr, &args->seq_args, &hdr);
2213 encode_putfh(xdr, args->fh, &hdr);
2214 encode_savefh(xdr, &hdr);
2215 encode_putfh(xdr, args->dir_fh, &hdr);
2216 encode_link(xdr, args->name, &hdr);
2217 encode_restorefh(xdr, &hdr);
2218 encode_getfattr(xdr, args->bitmask, &hdr);
2219 encode_nops(&hdr);
2220}
2221
2222/*
2223 * Encode CREATE request
2224 */
2225static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2226 const struct nfs4_create_arg *args)
2227{
2228 struct compound_hdr hdr = {
2229 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2230 };
2231
2232 encode_compound_hdr(xdr, req, &hdr);
2233 encode_sequence(xdr, &args->seq_args, &hdr);
2234 encode_putfh(xdr, args->dir_fh, &hdr);
2235 encode_create(xdr, args, &hdr);
2236 encode_getfh(xdr, &hdr);
2237 encode_getfattr(xdr, args->bitmask, &hdr);
2238 encode_nops(&hdr);
2239}
2240
2241/*
2242 * Encode SYMLINK request
2243 */
2244static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2245 const struct nfs4_create_arg *args)
2246{
2247 nfs4_xdr_enc_create(req, xdr, args);
2248}
2249
2250/*
2251 * Encode GETATTR request
2252 */
2253static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2254 const struct nfs4_getattr_arg *args)
2255{
2256 struct compound_hdr hdr = {
2257 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2258 };
2259
2260 encode_compound_hdr(xdr, req, &hdr);
2261 encode_sequence(xdr, &args->seq_args, &hdr);
2262 encode_putfh(xdr, args->fh, &hdr);
2263 encode_getfattr(xdr, args->bitmask, &hdr);
2264 encode_nops(&hdr);
2265}
2266
2267/*
2268 * Encode a CLOSE request
2269 */
2270static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2271 struct nfs_closeargs *args)
2272{
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 if (args->lr_args)
2281 encode_layoutreturn(xdr, args->lr_args, &hdr);
2282 if (args->bitmask != NULL)
2283 encode_getfattr(xdr, args->bitmask, &hdr);
2284 encode_close(xdr, args, &hdr);
2285 encode_nops(&hdr);
2286}
2287
2288/*
2289 * Encode an OPEN request
2290 */
2291static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2292 struct nfs_openargs *args)
2293{
2294 struct compound_hdr hdr = {
2295 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2296 };
2297
2298 encode_compound_hdr(xdr, req, &hdr);
2299 encode_sequence(xdr, &args->seq_args, &hdr);
2300 encode_putfh(xdr, args->fh, &hdr);
2301 encode_open(xdr, args, &hdr);
2302 encode_getfh(xdr, &hdr);
2303 if (args->access)
2304 encode_access(xdr, args->access, &hdr);
2305 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2306 encode_nops(&hdr);
2307}
2308
2309/*
2310 * Encode an OPEN_CONFIRM request
2311 */
2312static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2313 struct xdr_stream *xdr,
2314 struct nfs_open_confirmargs *args)
2315{
2316 struct compound_hdr hdr = {
2317 .nops = 0,
2318 };
2319
2320 encode_compound_hdr(xdr, req, &hdr);
2321 encode_putfh(xdr, args->fh, &hdr);
2322 encode_open_confirm(xdr, args, &hdr);
2323 encode_nops(&hdr);
2324}
2325
2326/*
2327 * Encode an OPEN request with no attributes.
2328 */
2329static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2330 struct xdr_stream *xdr,
2331 struct nfs_openargs *args)
2332{
2333 struct compound_hdr hdr = {
2334 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2335 };
2336
2337 encode_compound_hdr(xdr, req, &hdr);
2338 encode_sequence(xdr, &args->seq_args, &hdr);
2339 encode_putfh(xdr, args->fh, &hdr);
2340 encode_open(xdr, args, &hdr);
2341 if (args->access)
2342 encode_access(xdr, args->access, &hdr);
2343 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2344 encode_nops(&hdr);
2345}
2346
2347/*
2348 * Encode an OPEN_DOWNGRADE request
2349 */
2350static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2351 struct xdr_stream *xdr,
2352 struct nfs_closeargs *args)
2353{
2354 struct compound_hdr hdr = {
2355 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2356 };
2357
2358 encode_compound_hdr(xdr, req, &hdr);
2359 encode_sequence(xdr, &args->seq_args, &hdr);
2360 encode_putfh(xdr, args->fh, &hdr);
2361 if (args->lr_args)
2362 encode_layoutreturn(xdr, args->lr_args, &hdr);
2363 encode_open_downgrade(xdr, args, &hdr);
2364 encode_nops(&hdr);
2365}
2366
2367/*
2368 * Encode a LOCK request
2369 */
2370static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2371 struct nfs_lock_args *args)
2372{
2373 struct compound_hdr hdr = {
2374 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2375 };
2376
2377 encode_compound_hdr(xdr, req, &hdr);
2378 encode_sequence(xdr, &args->seq_args, &hdr);
2379 encode_putfh(xdr, args->fh, &hdr);
2380 encode_lock(xdr, args, &hdr);
2381 encode_nops(&hdr);
2382}
2383
2384/*
2385 * Encode a LOCKT request
2386 */
2387static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2388 struct nfs_lockt_args *args)
2389{
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_lockt(xdr, args, &hdr);
2398 encode_nops(&hdr);
2399}
2400
2401/*
2402 * Encode a LOCKU request
2403 */
2404static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2405 struct nfs_locku_args *args)
2406{
2407 struct compound_hdr hdr = {
2408 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2409 };
2410
2411 encode_compound_hdr(xdr, req, &hdr);
2412 encode_sequence(xdr, &args->seq_args, &hdr);
2413 encode_putfh(xdr, args->fh, &hdr);
2414 encode_locku(xdr, args, &hdr);
2415 encode_nops(&hdr);
2416}
2417
2418static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2419 struct xdr_stream *xdr,
2420 struct nfs_release_lockowner_args *args)
2421{
2422 struct compound_hdr hdr = {
2423 .minorversion = 0,
2424 };
2425
2426 encode_compound_hdr(xdr, req, &hdr);
2427 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2428 encode_nops(&hdr);
2429}
2430
2431/*
2432 * Encode a READLINK request
2433 */
2434static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2435 const struct nfs4_readlink *args)
2436{
2437 struct compound_hdr hdr = {
2438 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2439 };
2440
2441 encode_compound_hdr(xdr, req, &hdr);
2442 encode_sequence(xdr, &args->seq_args, &hdr);
2443 encode_putfh(xdr, args->fh, &hdr);
2444 encode_readlink(xdr, args, req, &hdr);
2445
2446 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2447 args->pgbase, args->pglen);
2448 encode_nops(&hdr);
2449}
2450
2451/*
2452 * Encode a READDIR request
2453 */
2454static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2455 const struct nfs4_readdir_arg *args)
2456{
2457 struct compound_hdr hdr = {
2458 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2459 };
2460
2461 encode_compound_hdr(xdr, req, &hdr);
2462 encode_sequence(xdr, &args->seq_args, &hdr);
2463 encode_putfh(xdr, args->fh, &hdr);
2464 encode_readdir(xdr, args, req, &hdr);
2465
2466 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2467 args->pgbase, args->count);
2468 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2469 __func__, hdr.replen << 2, args->pages,
2470 args->pgbase, args->count);
2471 encode_nops(&hdr);
2472}
2473
2474/*
2475 * Encode a READ request
2476 */
2477static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2478 struct nfs_pgio_args *args)
2479{
2480 struct compound_hdr hdr = {
2481 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2482 };
2483
2484 encode_compound_hdr(xdr, req, &hdr);
2485 encode_sequence(xdr, &args->seq_args, &hdr);
2486 encode_putfh(xdr, args->fh, &hdr);
2487 encode_read(xdr, args, &hdr);
2488
2489 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2490 args->pages, args->pgbase, args->count);
2491 req->rq_rcv_buf.flags |= XDRBUF_READ;
2492 encode_nops(&hdr);
2493}
2494
2495/*
2496 * Encode an SETATTR request
2497 */
2498static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2499 struct nfs_setattrargs *args)
2500{
2501 struct compound_hdr hdr = {
2502 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2503 };
2504
2505 encode_compound_hdr(xdr, req, &hdr);
2506 encode_sequence(xdr, &args->seq_args, &hdr);
2507 encode_putfh(xdr, args->fh, &hdr);
2508 encode_setattr(xdr, args, args->server, &hdr);
2509 encode_getfattr(xdr, args->bitmask, &hdr);
2510 encode_nops(&hdr);
2511}
2512
2513/*
2514 * Encode a GETACL request
2515 */
2516static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2517 struct nfs_getaclargs *args)
2518{
2519 struct compound_hdr hdr = {
2520 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2521 };
2522 uint32_t replen;
2523
2524 encode_compound_hdr(xdr, req, &hdr);
2525 encode_sequence(xdr, &args->seq_args, &hdr);
2526 encode_putfh(xdr, args->fh, &hdr);
2527 replen = hdr.replen + op_decode_hdr_maxsz;
2528 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2529
2530 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2531 args->acl_pages, 0, args->acl_len);
2532
2533 encode_nops(&hdr);
2534}
2535
2536/*
2537 * Encode a WRITE request
2538 */
2539static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2540 struct nfs_pgio_args *args)
2541{
2542 struct compound_hdr hdr = {
2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2544 };
2545
2546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fh, &hdr);
2549 encode_write(xdr, args, &hdr);
2550 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2551 if (args->bitmask)
2552 encode_getfattr(xdr, args->bitmask, &hdr);
2553 encode_nops(&hdr);
2554}
2555
2556/*
2557 * a COMMIT request
2558 */
2559static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2560 struct nfs_commitargs *args)
2561{
2562 struct compound_hdr hdr = {
2563 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2564 };
2565
2566 encode_compound_hdr(xdr, req, &hdr);
2567 encode_sequence(xdr, &args->seq_args, &hdr);
2568 encode_putfh(xdr, args->fh, &hdr);
2569 encode_commit(xdr, args, &hdr);
2570 encode_nops(&hdr);
2571}
2572
2573/*
2574 * FSINFO request
2575 */
2576static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2577 struct nfs4_fsinfo_arg *args)
2578{
2579 struct compound_hdr hdr = {
2580 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2581 };
2582
2583 encode_compound_hdr(xdr, req, &hdr);
2584 encode_sequence(xdr, &args->seq_args, &hdr);
2585 encode_putfh(xdr, args->fh, &hdr);
2586 encode_fsinfo(xdr, args->bitmask, &hdr);
2587 encode_nops(&hdr);
2588}
2589
2590/*
2591 * a PATHCONF request
2592 */
2593static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2594 const struct nfs4_pathconf_arg *args)
2595{
2596 struct compound_hdr hdr = {
2597 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2598 };
2599
2600 encode_compound_hdr(xdr, req, &hdr);
2601 encode_sequence(xdr, &args->seq_args, &hdr);
2602 encode_putfh(xdr, args->fh, &hdr);
2603 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2604 &hdr);
2605 encode_nops(&hdr);
2606}
2607
2608/*
2609 * a STATFS request
2610 */
2611static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2612 const struct nfs4_statfs_arg *args)
2613{
2614 struct compound_hdr hdr = {
2615 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2616 };
2617
2618 encode_compound_hdr(xdr, req, &hdr);
2619 encode_sequence(xdr, &args->seq_args, &hdr);
2620 encode_putfh(xdr, args->fh, &hdr);
2621 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2622 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2623 encode_nops(&hdr);
2624}
2625
2626/*
2627 * GETATTR_BITMAP request
2628 */
2629static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2630 struct xdr_stream *xdr,
2631 struct nfs4_server_caps_arg *args)
2632{
2633 const u32 *bitmask = args->bitmask;
2634 struct compound_hdr hdr = {
2635 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2636 };
2637
2638 encode_compound_hdr(xdr, req, &hdr);
2639 encode_sequence(xdr, &args->seq_args, &hdr);
2640 encode_putfh(xdr, args->fhandle, &hdr);
2641 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
2642 encode_nops(&hdr);
2643}
2644
2645/*
2646 * a RENEW request
2647 */
2648static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2649 struct nfs_client *clp)
2650{
2651 struct compound_hdr hdr = {
2652 .nops = 0,
2653 };
2654
2655 encode_compound_hdr(xdr, req, &hdr);
2656 encode_renew(xdr, clp->cl_clientid, &hdr);
2657 encode_nops(&hdr);
2658}
2659
2660/*
2661 * a SETCLIENTID request
2662 */
2663static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2664 struct xdr_stream *xdr,
2665 struct nfs4_setclientid *sc)
2666{
2667 struct compound_hdr hdr = {
2668 .nops = 0,
2669 };
2670
2671 encode_compound_hdr(xdr, req, &hdr);
2672 encode_setclientid(xdr, sc, &hdr);
2673 encode_nops(&hdr);
2674}
2675
2676/*
2677 * a SETCLIENTID_CONFIRM request
2678 */
2679static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2680 struct xdr_stream *xdr,
2681 struct nfs4_setclientid_res *arg)
2682{
2683 struct compound_hdr hdr = {
2684 .nops = 0,
2685 };
2686
2687 encode_compound_hdr(xdr, req, &hdr);
2688 encode_setclientid_confirm(xdr, arg, &hdr);
2689 encode_nops(&hdr);
2690}
2691
2692/*
2693 * DELEGRETURN request
2694 */
2695static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2696 struct xdr_stream *xdr,
2697 const struct nfs4_delegreturnargs *args)
2698{
2699 struct compound_hdr hdr = {
2700 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2701 };
2702
2703 encode_compound_hdr(xdr, req, &hdr);
2704 encode_sequence(xdr, &args->seq_args, &hdr);
2705 encode_putfh(xdr, args->fhandle, &hdr);
2706 if (args->lr_args)
2707 encode_layoutreturn(xdr, args->lr_args, &hdr);
2708 if (args->bitmask)
2709 encode_getfattr(xdr, args->bitmask, &hdr);
2710 encode_delegreturn(xdr, args->stateid, &hdr);
2711 encode_nops(&hdr);
2712}
2713
2714/*
2715 * Encode FS_LOCATIONS request
2716 */
2717static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2718 struct xdr_stream *xdr,
2719 struct nfs4_fs_locations_arg *args)
2720{
2721 struct compound_hdr hdr = {
2722 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2723 };
2724 uint32_t replen;
2725
2726 encode_compound_hdr(xdr, req, &hdr);
2727 encode_sequence(xdr, &args->seq_args, &hdr);
2728 if (args->migration) {
2729 encode_putfh(xdr, args->fh, &hdr);
2730 replen = hdr.replen;
2731 encode_fs_locations(xdr, args->bitmask, &hdr);
2732 if (args->renew)
2733 encode_renew(xdr, args->clientid, &hdr);
2734 } else {
2735 encode_putfh(xdr, args->dir_fh, &hdr);
2736 encode_lookup(xdr, args->name, &hdr);
2737 replen = hdr.replen;
2738 encode_fs_locations(xdr, args->bitmask, &hdr);
2739 }
2740
2741 /* Set up reply kvec to capture returned fs_locations array. */
2742 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2743 0, PAGE_SIZE);
2744 encode_nops(&hdr);
2745}
2746
2747/*
2748 * Encode SECINFO request
2749 */
2750static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2751 struct xdr_stream *xdr,
2752 struct nfs4_secinfo_arg *args)
2753{
2754 struct compound_hdr hdr = {
2755 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2756 };
2757
2758 encode_compound_hdr(xdr, req, &hdr);
2759 encode_sequence(xdr, &args->seq_args, &hdr);
2760 encode_putfh(xdr, args->dir_fh, &hdr);
2761 encode_secinfo(xdr, args->name, &hdr);
2762 encode_nops(&hdr);
2763}
2764
2765/*
2766 * Encode FSID_PRESENT request
2767 */
2768static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2769 struct xdr_stream *xdr,
2770 struct nfs4_fsid_present_arg *args)
2771{
2772 struct compound_hdr hdr = {
2773 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2774 };
2775
2776 encode_compound_hdr(xdr, req, &hdr);
2777 encode_sequence(xdr, &args->seq_args, &hdr);
2778 encode_putfh(xdr, args->fh, &hdr);
2779 encode_getfh(xdr, &hdr);
2780 if (args->renew)
2781 encode_renew(xdr, args->clientid, &hdr);
2782 encode_nops(&hdr);
2783}
2784
2785#if defined(CONFIG_NFS_V4_1)
2786/*
2787 * BIND_CONN_TO_SESSION request
2788 */
2789static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2790 struct xdr_stream *xdr,
2791 struct nfs41_bind_conn_to_session_args *args)
2792{
2793 struct compound_hdr hdr = {
2794 .minorversion = args->client->cl_mvops->minor_version,
2795 };
2796
2797 encode_compound_hdr(xdr, req, &hdr);
2798 encode_bind_conn_to_session(xdr, args, &hdr);
2799 encode_nops(&hdr);
2800}
2801
2802/*
2803 * EXCHANGE_ID request
2804 */
2805static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2806 struct xdr_stream *xdr,
2807 struct nfs41_exchange_id_args *args)
2808{
2809 struct compound_hdr hdr = {
2810 .minorversion = args->client->cl_mvops->minor_version,
2811 };
2812
2813 encode_compound_hdr(xdr, req, &hdr);
2814 encode_exchange_id(xdr, args, &hdr);
2815 encode_nops(&hdr);
2816}
2817
2818/*
2819 * a CREATE_SESSION request
2820 */
2821static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2822 struct xdr_stream *xdr,
2823 struct nfs41_create_session_args *args)
2824{
2825 struct compound_hdr hdr = {
2826 .minorversion = args->client->cl_mvops->minor_version,
2827 };
2828
2829 encode_compound_hdr(xdr, req, &hdr);
2830 encode_create_session(xdr, args, &hdr);
2831 encode_nops(&hdr);
2832}
2833
2834/*
2835 * a DESTROY_SESSION request
2836 */
2837static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2838 struct xdr_stream *xdr,
2839 struct nfs4_session *session)
2840{
2841 struct compound_hdr hdr = {
2842 .minorversion = session->clp->cl_mvops->minor_version,
2843 };
2844
2845 encode_compound_hdr(xdr, req, &hdr);
2846 encode_destroy_session(xdr, session, &hdr);
2847 encode_nops(&hdr);
2848}
2849
2850/*
2851 * a DESTROY_CLIENTID request
2852 */
2853static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2854 struct xdr_stream *xdr,
2855 struct nfs_client *clp)
2856{
2857 struct compound_hdr hdr = {
2858 .minorversion = clp->cl_mvops->minor_version,
2859 };
2860
2861 encode_compound_hdr(xdr, req, &hdr);
2862 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2863 encode_nops(&hdr);
2864}
2865
2866/*
2867 * a SEQUENCE request
2868 */
2869static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2870 struct nfs4_sequence_args *args)
2871{
2872 struct compound_hdr hdr = {
2873 .minorversion = nfs4_xdr_minorversion(args),
2874 };
2875
2876 encode_compound_hdr(xdr, req, &hdr);
2877 encode_sequence(xdr, args, &hdr);
2878 encode_nops(&hdr);
2879}
2880
2881/*
2882 * a GET_LEASE_TIME request
2883 */
2884static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2885 struct xdr_stream *xdr,
2886 struct nfs4_get_lease_time_args *args)
2887{
2888 struct compound_hdr hdr = {
2889 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2890 };
2891 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2892
2893 encode_compound_hdr(xdr, req, &hdr);
2894 encode_sequence(xdr, &args->la_seq_args, &hdr);
2895 encode_putrootfh(xdr, &hdr);
2896 encode_fsinfo(xdr, lease_bitmap, &hdr);
2897 encode_nops(&hdr);
2898}
2899
2900/*
2901 * a RECLAIM_COMPLETE request
2902 */
2903static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2904 struct xdr_stream *xdr,
2905 struct nfs41_reclaim_complete_args *args)
2906{
2907 struct compound_hdr hdr = {
2908 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2909 };
2910
2911 encode_compound_hdr(xdr, req, &hdr);
2912 encode_sequence(xdr, &args->seq_args, &hdr);
2913 encode_reclaim_complete(xdr, args, &hdr);
2914 encode_nops(&hdr);
2915}
2916
2917/*
2918 * Encode GETDEVICEINFO request
2919 */
2920static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2921 struct xdr_stream *xdr,
2922 struct nfs4_getdeviceinfo_args *args)
2923{
2924 struct compound_hdr hdr = {
2925 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2926 };
2927
2928 encode_compound_hdr(xdr, req, &hdr);
2929 encode_sequence(xdr, &args->seq_args, &hdr);
2930 encode_getdeviceinfo(xdr, args, &hdr);
2931
2932 /* set up reply kvec. Subtract notification bitmap max size (2)
2933 * so that notification bitmap is put in xdr_buf tail */
2934 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2935 args->pdev->pages, args->pdev->pgbase,
2936 args->pdev->pglen);
2937
2938 encode_nops(&hdr);
2939}
2940
2941/*
2942 * Encode LAYOUTGET request
2943 */
2944static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2945 struct xdr_stream *xdr,
2946 struct nfs4_layoutget_args *args)
2947{
2948 struct compound_hdr hdr = {
2949 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2950 };
2951
2952 encode_compound_hdr(xdr, req, &hdr);
2953 encode_sequence(xdr, &args->seq_args, &hdr);
2954 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2955 encode_layoutget(xdr, args, &hdr);
2956
2957 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2958 args->layout.pages, 0, args->layout.pglen);
2959
2960 encode_nops(&hdr);
2961}
2962
2963/*
2964 * Encode LAYOUTCOMMIT request
2965 */
2966static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2967 struct xdr_stream *xdr,
2968 struct nfs4_layoutcommit_args *args)
2969{
2970 struct nfs4_layoutcommit_data *data =
2971 container_of(args, struct nfs4_layoutcommit_data, args);
2972 struct compound_hdr hdr = {
2973 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2974 };
2975
2976 encode_compound_hdr(xdr, req, &hdr);
2977 encode_sequence(xdr, &args->seq_args, &hdr);
2978 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2979 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2980 encode_getfattr(xdr, args->bitmask, &hdr);
2981 encode_nops(&hdr);
2982}
2983
2984/*
2985 * Encode LAYOUTRETURN request
2986 */
2987static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2988 struct xdr_stream *xdr,
2989 struct nfs4_layoutreturn_args *args)
2990{
2991 struct compound_hdr hdr = {
2992 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2993 };
2994
2995 encode_compound_hdr(xdr, req, &hdr);
2996 encode_sequence(xdr, &args->seq_args, &hdr);
2997 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2998 encode_layoutreturn(xdr, args, &hdr);
2999 encode_nops(&hdr);
3000}
3001
3002/*
3003 * Encode SECINFO_NO_NAME request
3004 */
3005static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3006 struct xdr_stream *xdr,
3007 struct nfs41_secinfo_no_name_args *args)
3008{
3009 struct compound_hdr hdr = {
3010 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3011 };
3012
3013 encode_compound_hdr(xdr, req, &hdr);
3014 encode_sequence(xdr, &args->seq_args, &hdr);
3015 encode_putrootfh(xdr, &hdr);
3016 encode_secinfo_no_name(xdr, args, &hdr);
3017 encode_nops(&hdr);
3018 return 0;
3019}
3020
3021/*
3022 * Encode TEST_STATEID request
3023 */
3024static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3025 struct xdr_stream *xdr,
3026 struct nfs41_test_stateid_args *args)
3027{
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_test_stateid(xdr, args, &hdr);
3035 encode_nops(&hdr);
3036}
3037
3038/*
3039 * Encode FREE_STATEID request
3040 */
3041static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3042 struct xdr_stream *xdr,
3043 struct nfs41_free_stateid_args *args)
3044{
3045 struct compound_hdr hdr = {
3046 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3047 };
3048
3049 encode_compound_hdr(xdr, req, &hdr);
3050 encode_sequence(xdr, &args->seq_args, &hdr);
3051 encode_free_stateid(xdr, args, &hdr);
3052 encode_nops(&hdr);
3053}
3054#endif /* CONFIG_NFS_V4_1 */
3055
3056static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3057{
3058 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3059 "Remaining buffer length is %tu words.\n",
3060 func, xdr->end - xdr->p);
3061}
3062
3063static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3064{
3065 __be32 *p;
3066
3067 p = xdr_inline_decode(xdr, 4);
3068 if (unlikely(!p))
3069 goto out_overflow;
3070 *len = be32_to_cpup(p);
3071 p = xdr_inline_decode(xdr, *len);
3072 if (unlikely(!p))
3073 goto out_overflow;
3074 *string = (char *)p;
3075 return 0;
3076out_overflow:
3077 print_overflow_msg(__func__, xdr);
3078 return -EIO;
3079}
3080
3081static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3082{
3083 __be32 *p;
3084
3085 p = xdr_inline_decode(xdr, 8);
3086 if (unlikely(!p))
3087 goto out_overflow;
3088 hdr->status = be32_to_cpup(p++);
3089 hdr->taglen = be32_to_cpup(p);
3090
3091 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3092 if (unlikely(!p))
3093 goto out_overflow;
3094 hdr->tag = (char *)p;
3095 p += XDR_QUADLEN(hdr->taglen);
3096 hdr->nops = be32_to_cpup(p);
3097 if (unlikely(hdr->nops < 1))
3098 return nfs4_stat_to_errno(hdr->status);
3099 return 0;
3100out_overflow:
3101 print_overflow_msg(__func__, xdr);
3102 return -EIO;
3103}
3104
3105static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3106 int *nfs_retval)
3107{
3108 __be32 *p;
3109 uint32_t opnum;
3110 int32_t nfserr;
3111
3112 p = xdr_inline_decode(xdr, 8);
3113 if (unlikely(!p))
3114 goto out_overflow;
3115 opnum = be32_to_cpup(p++);
3116 if (unlikely(opnum != expected))
3117 goto out_bad_operation;
3118 nfserr = be32_to_cpup(p);
3119 if (nfserr == NFS_OK)
3120 *nfs_retval = 0;
3121 else
3122 *nfs_retval = nfs4_stat_to_errno(nfserr);
3123 return true;
3124out_bad_operation:
3125 dprintk("nfs: Server returned operation"
3126 " %d but we issued a request for %d\n",
3127 opnum, expected);
3128 *nfs_retval = -EREMOTEIO;
3129 return false;
3130out_overflow:
3131 print_overflow_msg(__func__, xdr);
3132 *nfs_retval = -EIO;
3133 return false;
3134}
3135
3136static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3137{
3138 int retval;
3139
3140 __decode_op_hdr(xdr, expected, &retval);
3141 return retval;
3142}
3143
3144/* Dummy routine */
3145static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3146{
3147 __be32 *p;
3148 unsigned int strlen;
3149 char *str;
3150
3151 p = xdr_inline_decode(xdr, 12);
3152 if (likely(p))
3153 return decode_opaque_inline(xdr, &strlen, &str);
3154 print_overflow_msg(__func__, xdr);
3155 return -EIO;
3156}
3157
3158static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3159{
3160 uint32_t bmlen;
3161 __be32 *p;
3162
3163 p = xdr_inline_decode(xdr, 4);
3164 if (unlikely(!p))
3165 goto out_overflow;
3166 bmlen = be32_to_cpup(p);
3167
3168 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3169 p = xdr_inline_decode(xdr, (bmlen << 2));
3170 if (unlikely(!p))
3171 goto out_overflow;
3172 if (bmlen > 0) {
3173 bitmap[0] = be32_to_cpup(p++);
3174 if (bmlen > 1) {
3175 bitmap[1] = be32_to_cpup(p++);
3176 if (bmlen > 2)
3177 bitmap[2] = be32_to_cpup(p);
3178 }
3179 }
3180 return 0;
3181out_overflow:
3182 print_overflow_msg(__func__, xdr);
3183 return -EIO;
3184}
3185
3186static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3187{
3188 __be32 *p;
3189
3190 p = xdr_inline_decode(xdr, 4);
3191 if (unlikely(!p))
3192 goto out_overflow;
3193 *attrlen = be32_to_cpup(p);
3194 *savep = xdr_stream_pos(xdr);
3195 return 0;
3196out_overflow:
3197 print_overflow_msg(__func__, xdr);
3198 return -EIO;
3199}
3200
3201static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3202{
3203 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3204 int ret;
3205 ret = decode_attr_bitmap(xdr, bitmask);
3206 if (unlikely(ret < 0))
3207 return ret;
3208 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3209 } else
3210 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3211 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3212 bitmask[0], bitmask[1], bitmask[2]);
3213 return 0;
3214}
3215
3216static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3217{
3218 __be32 *p;
3219 int ret = 0;
3220
3221 *type = 0;
3222 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3223 return -EIO;
3224 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3225 p = xdr_inline_decode(xdr, 4);
3226 if (unlikely(!p))
3227 goto out_overflow;
3228 *type = be32_to_cpup(p);
3229 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3230 dprintk("%s: bad type %d\n", __func__, *type);
3231 return -EIO;
3232 }
3233 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3234 ret = NFS_ATTR_FATTR_TYPE;
3235 }
3236 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3237 return ret;
3238out_overflow:
3239 print_overflow_msg(__func__, xdr);
3240 return -EIO;
3241}
3242
3243static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3244 uint32_t *bitmap, uint32_t *type)
3245{
3246 __be32 *p;
3247
3248 *type = 0;
3249 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3250 return -EIO;
3251 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3252 p = xdr_inline_decode(xdr, 4);
3253 if (unlikely(!p))
3254 goto out_overflow;
3255 *type = be32_to_cpup(p);
3256 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3257 }
3258 dprintk("%s: expire type=0x%x\n", __func__, *type);
3259 return 0;
3260out_overflow:
3261 print_overflow_msg(__func__, xdr);
3262 return -EIO;
3263}
3264
3265static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3266{
3267 __be32 *p;
3268 int ret = 0;
3269
3270 *change = 0;
3271 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3272 return -EIO;
3273 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3274 p = xdr_inline_decode(xdr, 8);
3275 if (unlikely(!p))
3276 goto out_overflow;
3277 xdr_decode_hyper(p, change);
3278 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3279 ret = NFS_ATTR_FATTR_CHANGE;
3280 }
3281 dprintk("%s: change attribute=%Lu\n", __func__,
3282 (unsigned long long)*change);
3283 return ret;
3284out_overflow:
3285 print_overflow_msg(__func__, xdr);
3286 return -EIO;
3287}
3288
3289static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3290{
3291 __be32 *p;
3292 int ret = 0;
3293
3294 *size = 0;
3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3296 return -EIO;
3297 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3298 p = xdr_inline_decode(xdr, 8);
3299 if (unlikely(!p))
3300 goto out_overflow;
3301 xdr_decode_hyper(p, size);
3302 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3303 ret = NFS_ATTR_FATTR_SIZE;
3304 }
3305 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3306 return ret;
3307out_overflow:
3308 print_overflow_msg(__func__, xdr);
3309 return -EIO;
3310}
3311
3312static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3313{
3314 __be32 *p;
3315
3316 *res = 0;
3317 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3318 return -EIO;
3319 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3320 p = xdr_inline_decode(xdr, 4);
3321 if (unlikely(!p))
3322 goto out_overflow;
3323 *res = be32_to_cpup(p);
3324 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3325 }
3326 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3327 return 0;
3328out_overflow:
3329 print_overflow_msg(__func__, xdr);
3330 return -EIO;
3331}
3332
3333static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3334{
3335 __be32 *p;
3336
3337 *res = 0;
3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3339 return -EIO;
3340 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3341 p = xdr_inline_decode(xdr, 4);
3342 if (unlikely(!p))
3343 goto out_overflow;
3344 *res = be32_to_cpup(p);
3345 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3346 }
3347 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3348 return 0;
3349out_overflow:
3350 print_overflow_msg(__func__, xdr);
3351 return -EIO;
3352}
3353
3354static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3355{
3356 __be32 *p;
3357 int ret = 0;
3358
3359 fsid->major = 0;
3360 fsid->minor = 0;
3361 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3362 return -EIO;
3363 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3364 p = xdr_inline_decode(xdr, 16);
3365 if (unlikely(!p))
3366 goto out_overflow;
3367 p = xdr_decode_hyper(p, &fsid->major);
3368 xdr_decode_hyper(p, &fsid->minor);
3369 bitmap[0] &= ~FATTR4_WORD0_FSID;
3370 ret = NFS_ATTR_FATTR_FSID;
3371 }
3372 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3373 (unsigned long long)fsid->major,
3374 (unsigned long long)fsid->minor);
3375 return ret;
3376out_overflow:
3377 print_overflow_msg(__func__, xdr);
3378 return -EIO;
3379}
3380
3381static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3382{
3383 __be32 *p;
3384
3385 *res = 60;
3386 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3387 return -EIO;
3388 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3389 p = xdr_inline_decode(xdr, 4);
3390 if (unlikely(!p))
3391 goto out_overflow;
3392 *res = be32_to_cpup(p);
3393 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3394 }
3395 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3396 return 0;
3397out_overflow:
3398 print_overflow_msg(__func__, xdr);
3399 return -EIO;
3400}
3401
3402static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3403{
3404 __be32 *p;
3405
3406 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3407 return -EIO;
3408 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3409 p = xdr_inline_decode(xdr, 4);
3410 if (unlikely(!p))
3411 goto out_overflow;
3412 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3413 *res = -be32_to_cpup(p);
3414 }
3415 return 0;
3416out_overflow:
3417 print_overflow_msg(__func__, xdr);
3418 return -EIO;
3419}
3420
3421static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3422 uint32_t *bitmap, uint32_t *bitmask)
3423{
3424 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3425 int ret;
3426 ret = decode_attr_bitmap(xdr, bitmask);
3427 if (unlikely(ret < 0))
3428 return ret;
3429 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3430 } else
3431 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3432 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3433 bitmask[0], bitmask[1], bitmask[2]);
3434 return 0;
3435}
3436
3437static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3438{
3439 __be32 *p;
3440 int len;
3441
3442 if (fh != NULL)
3443 memset(fh, 0, sizeof(*fh));
3444
3445 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3446 return -EIO;
3447 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3448 p = xdr_inline_decode(xdr, 4);
3449 if (unlikely(!p))
3450 goto out_overflow;
3451 len = be32_to_cpup(p);
3452 if (len > NFS4_FHSIZE)
3453 return -EIO;
3454 p = xdr_inline_decode(xdr, len);
3455 if (unlikely(!p))
3456 goto out_overflow;
3457 if (fh != NULL) {
3458 memcpy(fh->data, p, len);
3459 fh->size = len;
3460 }
3461 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3462 }
3463 return 0;
3464out_overflow:
3465 print_overflow_msg(__func__, xdr);
3466 return -EIO;
3467}
3468
3469static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3470{
3471 __be32 *p;
3472
3473 *res = 0;
3474 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3475 return -EIO;
3476 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3477 p = xdr_inline_decode(xdr, 4);
3478 if (unlikely(!p))
3479 goto out_overflow;
3480 *res = be32_to_cpup(p);
3481 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3482 }
3483 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3484 return 0;
3485out_overflow:
3486 print_overflow_msg(__func__, xdr);
3487 return -EIO;
3488}
3489
3490static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3491{
3492 __be32 *p;
3493 int ret = 0;
3494
3495 *fileid = 0;
3496 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3497 return -EIO;
3498 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3499 p = xdr_inline_decode(xdr, 8);
3500 if (unlikely(!p))
3501 goto out_overflow;
3502 xdr_decode_hyper(p, fileid);
3503 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3504 ret = NFS_ATTR_FATTR_FILEID;
3505 }
3506 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3507 return ret;
3508out_overflow:
3509 print_overflow_msg(__func__, xdr);
3510 return -EIO;
3511}
3512
3513static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3514{
3515 __be32 *p;
3516 int ret = 0;
3517
3518 *fileid = 0;
3519 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3520 return -EIO;
3521 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3522 p = xdr_inline_decode(xdr, 8);
3523 if (unlikely(!p))
3524 goto out_overflow;
3525 xdr_decode_hyper(p, fileid);
3526 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3527 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3528 }
3529 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3530 return ret;
3531out_overflow:
3532 print_overflow_msg(__func__, xdr);
3533 return -EIO;
3534}
3535
3536static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3537{
3538 __be32 *p;
3539 int status = 0;
3540
3541 *res = 0;
3542 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3543 return -EIO;
3544 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3545 p = xdr_inline_decode(xdr, 8);
3546 if (unlikely(!p))
3547 goto out_overflow;
3548 xdr_decode_hyper(p, res);
3549 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3550 }
3551 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3552 return status;
3553out_overflow:
3554 print_overflow_msg(__func__, xdr);
3555 return -EIO;
3556}
3557
3558static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3559{
3560 __be32 *p;
3561 int status = 0;
3562
3563 *res = 0;
3564 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3565 return -EIO;
3566 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3567 p = xdr_inline_decode(xdr, 8);
3568 if (unlikely(!p))
3569 goto out_overflow;
3570 xdr_decode_hyper(p, res);
3571 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3572 }
3573 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3574 return status;
3575out_overflow:
3576 print_overflow_msg(__func__, xdr);
3577 return -EIO;
3578}
3579
3580static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3581{
3582 __be32 *p;
3583 int status = 0;
3584
3585 *res = 0;
3586 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3587 return -EIO;
3588 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3589 p = xdr_inline_decode(xdr, 8);
3590 if (unlikely(!p))
3591 goto out_overflow;
3592 xdr_decode_hyper(p, res);
3593 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3594 }
3595 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3596 return status;
3597out_overflow:
3598 print_overflow_msg(__func__, xdr);
3599 return -EIO;
3600}
3601
3602static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3603{
3604 u32 n;
3605 __be32 *p;
3606 int status = 0;
3607
3608 p = xdr_inline_decode(xdr, 4);
3609 if (unlikely(!p))
3610 goto out_overflow;
3611 n = be32_to_cpup(p);
3612 if (n == 0)
3613 goto root_path;
3614 dprintk("pathname4: ");
3615 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3616 dprintk("cannot parse %d components in path\n", n);
3617 goto out_eio;
3618 }
3619 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3620 struct nfs4_string *component = &path->components[path->ncomponents];
3621 status = decode_opaque_inline(xdr, &component->len, &component->data);
3622 if (unlikely(status != 0))
3623 goto out_eio;
3624 ifdebug (XDR)
3625 pr_cont("%s%.*s ",
3626 (path->ncomponents != n ? "/ " : ""),
3627 component->len, component->data);
3628 }
3629out:
3630 return status;
3631root_path:
3632/* a root pathname is sent as a zero component4 */
3633 path->ncomponents = 1;
3634 path->components[0].len=0;
3635 path->components[0].data=NULL;
3636 dprintk("pathname4: /\n");
3637 goto out;
3638out_eio:
3639 dprintk(" status %d", status);
3640 status = -EIO;
3641 goto out;
3642out_overflow:
3643 print_overflow_msg(__func__, xdr);
3644 return -EIO;
3645}
3646
3647static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3648{
3649 int n;
3650 __be32 *p;
3651 int status = -EIO;
3652
3653 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3654 goto out;
3655 status = 0;
3656 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3657 goto out;
3658 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3659 status = -EIO;
3660 /* Ignore borken servers that return unrequested attrs */
3661 if (unlikely(res == NULL))
3662 goto out;
3663 dprintk("%s: fsroot:\n", __func__);
3664 status = decode_pathname(xdr, &res->fs_path);
3665 if (unlikely(status != 0))
3666 goto out;
3667 p = xdr_inline_decode(xdr, 4);
3668 if (unlikely(!p))
3669 goto out_overflow;
3670 n = be32_to_cpup(p);
3671 if (n <= 0)
3672 goto out_eio;
3673 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3674 u32 m;
3675 struct nfs4_fs_location *loc;
3676
3677 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3678 break;
3679 loc = &res->locations[res->nlocations];
3680 p = xdr_inline_decode(xdr, 4);
3681 if (unlikely(!p))
3682 goto out_overflow;
3683 m = be32_to_cpup(p);
3684
3685 dprintk("%s: servers:\n", __func__);
3686 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3687 struct nfs4_string *server;
3688
3689 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3690 unsigned int i;
3691 dprintk("%s: using first %u of %u servers "
3692 "returned for location %u\n",
3693 __func__,
3694 NFS4_FS_LOCATION_MAXSERVERS,
3695 m, res->nlocations);
3696 for (i = loc->nservers; i < m; i++) {
3697 unsigned int len;
3698 char *data;
3699 status = decode_opaque_inline(xdr, &len, &data);
3700 if (unlikely(status != 0))
3701 goto out_eio;
3702 }
3703 break;
3704 }
3705 server = &loc->servers[loc->nservers];
3706 status = decode_opaque_inline(xdr, &server->len, &server->data);
3707 if (unlikely(status != 0))
3708 goto out_eio;
3709 dprintk("%s ", server->data);
3710 }
3711 status = decode_pathname(xdr, &loc->rootpath);
3712 if (unlikely(status != 0))
3713 goto out_eio;
3714 }
3715 if (res->nlocations != 0)
3716 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3717out:
3718 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3719 return status;
3720out_overflow:
3721 print_overflow_msg(__func__, xdr);
3722out_eio:
3723 status = -EIO;
3724 goto out;
3725}
3726
3727static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3728{
3729 __be32 *p;
3730 int status = 0;
3731
3732 *res = 0;
3733 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3734 return -EIO;
3735 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3736 p = xdr_inline_decode(xdr, 8);
3737 if (unlikely(!p))
3738 goto out_overflow;
3739 xdr_decode_hyper(p, res);
3740 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3741 }
3742 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3743 return status;
3744out_overflow:
3745 print_overflow_msg(__func__, xdr);
3746 return -EIO;
3747}
3748
3749static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3750{
3751 __be32 *p;
3752 int status = 0;
3753
3754 *maxlink = 1;
3755 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3756 return -EIO;
3757 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3758 p = xdr_inline_decode(xdr, 4);
3759 if (unlikely(!p))
3760 goto out_overflow;
3761 *maxlink = be32_to_cpup(p);
3762 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3763 }
3764 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3765 return status;
3766out_overflow:
3767 print_overflow_msg(__func__, xdr);
3768 return -EIO;
3769}
3770
3771static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3772{
3773 __be32 *p;
3774 int status = 0;
3775
3776 *maxname = 1024;
3777 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3778 return -EIO;
3779 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3780 p = xdr_inline_decode(xdr, 4);
3781 if (unlikely(!p))
3782 goto out_overflow;
3783 *maxname = be32_to_cpup(p);
3784 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3785 }
3786 dprintk("%s: maxname=%u\n", __func__, *maxname);
3787 return status;
3788out_overflow:
3789 print_overflow_msg(__func__, xdr);
3790 return -EIO;
3791}
3792
3793static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3794{
3795 __be32 *p;
3796 int status = 0;
3797
3798 *res = 1024;
3799 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3800 return -EIO;
3801 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3802 uint64_t maxread;
3803 p = xdr_inline_decode(xdr, 8);
3804 if (unlikely(!p))
3805 goto out_overflow;
3806 xdr_decode_hyper(p, &maxread);
3807 if (maxread > 0x7FFFFFFF)
3808 maxread = 0x7FFFFFFF;
3809 *res = (uint32_t)maxread;
3810 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3811 }
3812 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3813 return status;
3814out_overflow:
3815 print_overflow_msg(__func__, xdr);
3816 return -EIO;
3817}
3818
3819static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3820{
3821 __be32 *p;
3822 int status = 0;
3823
3824 *res = 1024;
3825 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3826 return -EIO;
3827 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3828 uint64_t maxwrite;
3829 p = xdr_inline_decode(xdr, 8);
3830 if (unlikely(!p))
3831 goto out_overflow;
3832 xdr_decode_hyper(p, &maxwrite);
3833 if (maxwrite > 0x7FFFFFFF)
3834 maxwrite = 0x7FFFFFFF;
3835 *res = (uint32_t)maxwrite;
3836 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3837 }
3838 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3839 return status;
3840out_overflow:
3841 print_overflow_msg(__func__, xdr);
3842 return -EIO;
3843}
3844
3845static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3846{
3847 uint32_t tmp;
3848 __be32 *p;
3849 int ret = 0;
3850
3851 *mode = 0;
3852 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3853 return -EIO;
3854 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3855 p = xdr_inline_decode(xdr, 4);
3856 if (unlikely(!p))
3857 goto out_overflow;
3858 tmp = be32_to_cpup(p);
3859 *mode = tmp & ~S_IFMT;
3860 bitmap[1] &= ~FATTR4_WORD1_MODE;
3861 ret = NFS_ATTR_FATTR_MODE;
3862 }
3863 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3864 return ret;
3865out_overflow:
3866 print_overflow_msg(__func__, xdr);
3867 return -EIO;
3868}
3869
3870static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3871{
3872 __be32 *p;
3873 int ret = 0;
3874
3875 *nlink = 1;
3876 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3877 return -EIO;
3878 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3879 p = xdr_inline_decode(xdr, 4);
3880 if (unlikely(!p))
3881 goto out_overflow;
3882 *nlink = be32_to_cpup(p);
3883 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3884 ret = NFS_ATTR_FATTR_NLINK;
3885 }
3886 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3887 return ret;
3888out_overflow:
3889 print_overflow_msg(__func__, xdr);
3890 return -EIO;
3891}
3892
3893static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3894 const struct nfs_server *server, kuid_t *uid,
3895 struct nfs4_string *owner_name)
3896{
3897 uint32_t len;
3898 __be32 *p;
3899 int ret = 0;
3900
3901 *uid = make_kuid(&init_user_ns, -2);
3902 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3903 return -EIO;
3904 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3905 p = xdr_inline_decode(xdr, 4);
3906 if (unlikely(!p))
3907 goto out_overflow;
3908 len = be32_to_cpup(p);
3909 p = xdr_inline_decode(xdr, len);
3910 if (unlikely(!p))
3911 goto out_overflow;
3912 if (owner_name != NULL) {
3913 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3914 if (owner_name->data != NULL) {
3915 owner_name->len = len;
3916 ret = NFS_ATTR_FATTR_OWNER_NAME;
3917 }
3918 } else if (len < XDR_MAX_NETOBJ) {
3919 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3920 ret = NFS_ATTR_FATTR_OWNER;
3921 else
3922 dprintk("%s: nfs_map_name_to_uid failed!\n",
3923 __func__);
3924 } else
3925 dprintk("%s: name too long (%u)!\n",
3926 __func__, len);
3927 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3928 }
3929 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3930 return ret;
3931out_overflow:
3932 print_overflow_msg(__func__, xdr);
3933 return -EIO;
3934}
3935
3936static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3937 const struct nfs_server *server, kgid_t *gid,
3938 struct nfs4_string *group_name)
3939{
3940 uint32_t len;
3941 __be32 *p;
3942 int ret = 0;
3943
3944 *gid = make_kgid(&init_user_ns, -2);
3945 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3946 return -EIO;
3947 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3948 p = xdr_inline_decode(xdr, 4);
3949 if (unlikely(!p))
3950 goto out_overflow;
3951 len = be32_to_cpup(p);
3952 p = xdr_inline_decode(xdr, len);
3953 if (unlikely(!p))
3954 goto out_overflow;
3955 if (group_name != NULL) {
3956 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3957 if (group_name->data != NULL) {
3958 group_name->len = len;
3959 ret = NFS_ATTR_FATTR_GROUP_NAME;
3960 }
3961 } else if (len < XDR_MAX_NETOBJ) {
3962 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3963 ret = NFS_ATTR_FATTR_GROUP;
3964 else
3965 dprintk("%s: nfs_map_group_to_gid failed!\n",
3966 __func__);
3967 } else
3968 dprintk("%s: name too long (%u)!\n",
3969 __func__, len);
3970 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3971 }
3972 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3973 return ret;
3974out_overflow:
3975 print_overflow_msg(__func__, xdr);
3976 return -EIO;
3977}
3978
3979static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3980{
3981 uint32_t major = 0, minor = 0;
3982 __be32 *p;
3983 int ret = 0;
3984
3985 *rdev = MKDEV(0,0);
3986 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3987 return -EIO;
3988 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3989 dev_t tmp;
3990
3991 p = xdr_inline_decode(xdr, 8);
3992 if (unlikely(!p))
3993 goto out_overflow;
3994 major = be32_to_cpup(p++);
3995 minor = be32_to_cpup(p);
3996 tmp = MKDEV(major, minor);
3997 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3998 *rdev = tmp;
3999 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4000 ret = NFS_ATTR_FATTR_RDEV;
4001 }
4002 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4003 return ret;
4004out_overflow:
4005 print_overflow_msg(__func__, xdr);
4006 return -EIO;
4007}
4008
4009static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4010{
4011 __be32 *p;
4012 int status = 0;
4013
4014 *res = 0;
4015 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4016 return -EIO;
4017 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4018 p = xdr_inline_decode(xdr, 8);
4019 if (unlikely(!p))
4020 goto out_overflow;
4021 xdr_decode_hyper(p, res);
4022 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4023 }
4024 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4025 return status;
4026out_overflow:
4027 print_overflow_msg(__func__, xdr);
4028 return -EIO;
4029}
4030
4031static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4032{
4033 __be32 *p;
4034 int status = 0;
4035
4036 *res = 0;
4037 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4038 return -EIO;
4039 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4040 p = xdr_inline_decode(xdr, 8);
4041 if (unlikely(!p))
4042 goto out_overflow;
4043 xdr_decode_hyper(p, res);
4044 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4045 }
4046 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4047 return status;
4048out_overflow:
4049 print_overflow_msg(__func__, xdr);
4050 return -EIO;
4051}
4052
4053static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4054{
4055 __be32 *p;
4056 int status = 0;
4057
4058 *res = 0;
4059 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4060 return -EIO;
4061 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4062 p = xdr_inline_decode(xdr, 8);
4063 if (unlikely(!p))
4064 goto out_overflow;
4065 xdr_decode_hyper(p, res);
4066 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4067 }
4068 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4069 return status;
4070out_overflow:
4071 print_overflow_msg(__func__, xdr);
4072 return -EIO;
4073}
4074
4075static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4076{
4077 __be32 *p;
4078 int ret = 0;
4079
4080 *used = 0;
4081 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4082 return -EIO;
4083 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4084 p = xdr_inline_decode(xdr, 8);
4085 if (unlikely(!p))
4086 goto out_overflow;
4087 xdr_decode_hyper(p, used);
4088 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4089 ret = NFS_ATTR_FATTR_SPACE_USED;
4090 }
4091 dprintk("%s: space used=%Lu\n", __func__,
4092 (unsigned long long)*used);
4093 return ret;
4094out_overflow:
4095 print_overflow_msg(__func__, xdr);
4096 return -EIO;
4097}
4098
4099static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4100{
4101 __be32 *p;
4102 uint64_t sec;
4103 uint32_t nsec;
4104
4105 p = xdr_inline_decode(xdr, 12);
4106 if (unlikely(!p))
4107 goto out_overflow;
4108 p = xdr_decode_hyper(p, &sec);
4109 nsec = be32_to_cpup(p);
4110 time->tv_sec = (time_t)sec;
4111 time->tv_nsec = (long)nsec;
4112 return 0;
4113out_overflow:
4114 print_overflow_msg(__func__, xdr);
4115 return -EIO;
4116}
4117
4118static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4119{
4120 int status = 0;
4121
4122 time->tv_sec = 0;
4123 time->tv_nsec = 0;
4124 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4125 return -EIO;
4126 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4127 status = decode_attr_time(xdr, time);
4128 if (status == 0)
4129 status = NFS_ATTR_FATTR_ATIME;
4130 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4131 }
4132 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4133 return status;
4134}
4135
4136static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4137{
4138 int status = 0;
4139
4140 time->tv_sec = 0;
4141 time->tv_nsec = 0;
4142 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4143 return -EIO;
4144 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4145 status = decode_attr_time(xdr, time);
4146 if (status == 0)
4147 status = NFS_ATTR_FATTR_CTIME;
4148 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4149 }
4150 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4151 return status;
4152}
4153
4154static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4155 struct timespec *time)
4156{
4157 int status = 0;
4158
4159 time->tv_sec = 0;
4160 time->tv_nsec = 0;
4161 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4162 return -EIO;
4163 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4164 status = decode_attr_time(xdr, time);
4165 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4166 }
4167 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4168 (long)time->tv_nsec);
4169 return status;
4170}
4171
4172static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4173 struct nfs4_label *label)
4174{
4175 uint32_t pi = 0;
4176 uint32_t lfs = 0;
4177 __u32 len;
4178 __be32 *p;
4179 int status = 0;
4180
4181 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4182 return -EIO;
4183 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4184 p = xdr_inline_decode(xdr, 4);
4185 if (unlikely(!p))
4186 goto out_overflow;
4187 lfs = be32_to_cpup(p++);
4188 p = xdr_inline_decode(xdr, 4);
4189 if (unlikely(!p))
4190 goto out_overflow;
4191 pi = be32_to_cpup(p++);
4192 p = xdr_inline_decode(xdr, 4);
4193 if (unlikely(!p))
4194 goto out_overflow;
4195 len = be32_to_cpup(p++);
4196 p = xdr_inline_decode(xdr, len);
4197 if (unlikely(!p))
4198 goto out_overflow;
4199 if (len < NFS4_MAXLABELLEN) {
4200 if (label) {
4201 memcpy(label->label, p, len);
4202 label->len = len;
4203 label->pi = pi;
4204 label->lfs = lfs;
4205 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4206 }
4207 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4208 } else
4209 printk(KERN_WARNING "%s: label too long (%u)!\n",
4210 __func__, len);
4211 }
4212 if (label && label->label)
4213 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4214 (char *)label->label, label->len, label->pi, label->lfs);
4215 return status;
4216
4217out_overflow:
4218 print_overflow_msg(__func__, xdr);
4219 return -EIO;
4220}
4221
4222static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4223{
4224 int status = 0;
4225
4226 time->tv_sec = 0;
4227 time->tv_nsec = 0;
4228 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4229 return -EIO;
4230 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4231 status = decode_attr_time(xdr, time);
4232 if (status == 0)
4233 status = NFS_ATTR_FATTR_MTIME;
4234 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4235 }
4236 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4237 return status;
4238}
4239
4240static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4241{
4242 unsigned int attrwords = XDR_QUADLEN(attrlen);
4243 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4244
4245 if (unlikely(attrwords != nwords)) {
4246 dprintk("%s: server returned incorrect attribute length: "
4247 "%u %c %u\n",
4248 __func__,
4249 attrwords << 2,
4250 (attrwords < nwords) ? '<' : '>',
4251 nwords << 2);
4252 return -EIO;
4253 }
4254 return 0;
4255}
4256
4257static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4258{
4259 __be32 *p;
4260
4261 p = xdr_inline_decode(xdr, 20);
4262 if (unlikely(!p))
4263 goto out_overflow;
4264 cinfo->atomic = be32_to_cpup(p++);
4265 p = xdr_decode_hyper(p, &cinfo->before);
4266 xdr_decode_hyper(p, &cinfo->after);
4267 return 0;
4268out_overflow:
4269 print_overflow_msg(__func__, xdr);
4270 return -EIO;
4271}
4272
4273static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4274{
4275 __be32 *p;
4276 uint32_t supp, acc;
4277 int status;
4278
4279 status = decode_op_hdr(xdr, OP_ACCESS);
4280 if (status)
4281 return status;
4282 p = xdr_inline_decode(xdr, 8);
4283 if (unlikely(!p))
4284 goto out_overflow;
4285 supp = be32_to_cpup(p++);
4286 acc = be32_to_cpup(p);
4287 *supported = supp;
4288 *access = acc;
4289 return 0;
4290out_overflow:
4291 print_overflow_msg(__func__, xdr);
4292 return -EIO;
4293}
4294
4295static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4296{
4297 __be32 *p;
4298
4299 p = xdr_inline_decode(xdr, len);
4300 if (likely(p)) {
4301 memcpy(buf, p, len);
4302 return 0;
4303 }
4304 print_overflow_msg(__func__, xdr);
4305 return -EIO;
4306}
4307
4308static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4309{
4310 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4311}
4312
4313static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4314{
4315 stateid->type = NFS4_OPEN_STATEID_TYPE;
4316 return decode_stateid(xdr, stateid);
4317}
4318
4319static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4320{
4321 stateid->type = NFS4_LOCK_STATEID_TYPE;
4322 return decode_stateid(xdr, stateid);
4323}
4324
4325static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4326{
4327 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4328 return decode_stateid(xdr, stateid);
4329}
4330
4331static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4332{
4333 int status;
4334
4335 status = decode_op_hdr(xdr, OP_CLOSE);
4336 if (status != -EIO)
4337 nfs_increment_open_seqid(status, res->seqid);
4338 if (!status)
4339 status = decode_open_stateid(xdr, &res->stateid);
4340 return status;
4341}
4342
4343static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4344{
4345 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4346}
4347
4348static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4349{
4350 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4351}
4352
4353static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4354{
4355 int status;
4356
4357 status = decode_op_hdr(xdr, OP_COMMIT);
4358 if (!status)
4359 status = decode_write_verifier(xdr, &res->verf->verifier);
4360 return status;
4361}
4362
4363static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4364{
4365 __be32 *p;
4366 uint32_t bmlen;
4367 int status;
4368
4369 status = decode_op_hdr(xdr, OP_CREATE);
4370 if (status)
4371 return status;
4372 if ((status = decode_change_info(xdr, cinfo)))
4373 return status;
4374 p = xdr_inline_decode(xdr, 4);
4375 if (unlikely(!p))
4376 goto out_overflow;
4377 bmlen = be32_to_cpup(p);
4378 p = xdr_inline_decode(xdr, bmlen << 2);
4379 if (likely(p))
4380 return 0;
4381out_overflow:
4382 print_overflow_msg(__func__, xdr);
4383 return -EIO;
4384}
4385
4386static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4387{
4388 unsigned int savep;
4389 uint32_t attrlen, bitmap[3] = {0};
4390 int status;
4391
4392 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4393 goto xdr_error;
4394 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4395 goto xdr_error;
4396 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4397 goto xdr_error;
4398 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4399 goto xdr_error;
4400 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4401 &res->fh_expire_type)) != 0)
4402 goto xdr_error;
4403 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4404 goto xdr_error;
4405 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4406 goto xdr_error;
4407 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4408 goto xdr_error;
4409 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4410 res->exclcreat_bitmask)) != 0)
4411 goto xdr_error;
4412 status = verify_attr_len(xdr, savep, attrlen);
4413xdr_error:
4414 dprintk("%s: xdr returned %d!\n", __func__, -status);
4415 return status;
4416}
4417
4418static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4419{
4420 unsigned int savep;
4421 uint32_t attrlen, bitmap[3] = {0};
4422 int status;
4423
4424 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4425 goto xdr_error;
4426 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4427 goto xdr_error;
4428 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4429 goto xdr_error;
4430
4431 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4432 goto xdr_error;
4433 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4434 goto xdr_error;
4435 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4436 goto xdr_error;
4437
4438 status = -EIO;
4439 if (unlikely(bitmap[0]))
4440 goto xdr_error;
4441
4442 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4443 goto xdr_error;
4444 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4445 goto xdr_error;
4446 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4447 goto xdr_error;
4448
4449 status = verify_attr_len(xdr, savep, attrlen);
4450xdr_error:
4451 dprintk("%s: xdr returned %d!\n", __func__, -status);
4452 return status;
4453}
4454
4455static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4456{
4457 unsigned int savep;
4458 uint32_t attrlen, bitmap[3] = {0};
4459 int status;
4460
4461 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4462 goto xdr_error;
4463 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4464 goto xdr_error;
4465 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4466 goto xdr_error;
4467
4468 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4469 goto xdr_error;
4470 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4471 goto xdr_error;
4472
4473 status = verify_attr_len(xdr, savep, attrlen);
4474xdr_error:
4475 dprintk("%s: xdr returned %d!\n", __func__, -status);
4476 return status;
4477}
4478
4479static int decode_threshold_hint(struct xdr_stream *xdr,
4480 uint32_t *bitmap,
4481 uint64_t *res,
4482 uint32_t hint_bit)
4483{
4484 __be32 *p;
4485
4486 *res = 0;
4487 if (likely(bitmap[0] & hint_bit)) {
4488 p = xdr_inline_decode(xdr, 8);
4489 if (unlikely(!p))
4490 goto out_overflow;
4491 xdr_decode_hyper(p, res);
4492 }
4493 return 0;
4494out_overflow:
4495 print_overflow_msg(__func__, xdr);
4496 return -EIO;
4497}
4498
4499static int decode_first_threshold_item4(struct xdr_stream *xdr,
4500 struct nfs4_threshold *res)
4501{
4502 __be32 *p;
4503 unsigned int savep;
4504 uint32_t bitmap[3] = {0,}, attrlen;
4505 int status;
4506
4507 /* layout type */
4508 p = xdr_inline_decode(xdr, 4);
4509 if (unlikely(!p)) {
4510 print_overflow_msg(__func__, xdr);
4511 return -EIO;
4512 }
4513 res->l_type = be32_to_cpup(p);
4514
4515 /* thi_hintset bitmap */
4516 status = decode_attr_bitmap(xdr, bitmap);
4517 if (status < 0)
4518 goto xdr_error;
4519
4520 /* thi_hintlist length */
4521 status = decode_attr_length(xdr, &attrlen, &savep);
4522 if (status < 0)
4523 goto xdr_error;
4524 /* thi_hintlist */
4525 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4526 if (status < 0)
4527 goto xdr_error;
4528 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4529 if (status < 0)
4530 goto xdr_error;
4531 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4532 THRESHOLD_RD_IO);
4533 if (status < 0)
4534 goto xdr_error;
4535 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4536 THRESHOLD_WR_IO);
4537 if (status < 0)
4538 goto xdr_error;
4539
4540 status = verify_attr_len(xdr, savep, attrlen);
4541 res->bm = bitmap[0];
4542
4543 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4544 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4545 res->wr_io_sz);
4546xdr_error:
4547 dprintk("%s ret=%d!\n", __func__, status);
4548 return status;
4549}
4550
4551/*
4552 * Thresholds on pNFS direct I/O vrs MDS I/O
4553 */
4554static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4555 uint32_t *bitmap,
4556 struct nfs4_threshold *res)
4557{
4558 __be32 *p;
4559 int status = 0;
4560 uint32_t num;
4561
4562 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4563 return -EIO;
4564 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4565 /* Did the server return an unrequested attribute? */
4566 if (unlikely(res == NULL))
4567 return -EREMOTEIO;
4568 p = xdr_inline_decode(xdr, 4);
4569 if (unlikely(!p))
4570 goto out_overflow;
4571 num = be32_to_cpup(p);
4572 if (num == 0)
4573 return 0;
4574 if (num > 1)
4575 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4576 "drivers per filesystem not supported\n",
4577 __func__);
4578
4579 status = decode_first_threshold_item4(xdr, res);
4580 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4581 }
4582 return status;
4583out_overflow:
4584 print_overflow_msg(__func__, xdr);
4585 return -EIO;
4586}
4587
4588static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4589 struct nfs_fattr *fattr, struct nfs_fh *fh,
4590 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4591 const struct nfs_server *server)
4592{
4593 int status;
4594 umode_t fmode = 0;
4595 uint32_t type;
4596 int32_t err;
4597
4598 status = decode_attr_type(xdr, bitmap, &type);
4599 if (status < 0)
4600 goto xdr_error;
4601 fattr->mode = 0;
4602 if (status != 0) {
4603 fattr->mode |= nfs_type2fmt[type];
4604 fattr->valid |= status;
4605 }
4606
4607 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4608 if (status < 0)
4609 goto xdr_error;
4610 fattr->valid |= status;
4611
4612 status = decode_attr_size(xdr, bitmap, &fattr->size);
4613 if (status < 0)
4614 goto xdr_error;
4615 fattr->valid |= status;
4616
4617 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4618 if (status < 0)
4619 goto xdr_error;
4620 fattr->valid |= status;
4621
4622 err = 0;
4623 status = decode_attr_error(xdr, bitmap, &err);
4624 if (status < 0)
4625 goto xdr_error;
4626
4627 status = decode_attr_filehandle(xdr, bitmap, fh);
4628 if (status < 0)
4629 goto xdr_error;
4630
4631 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4632 if (status < 0)
4633 goto xdr_error;
4634 fattr->valid |= status;
4635
4636 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4637 if (status < 0)
4638 goto xdr_error;
4639 fattr->valid |= status;
4640
4641 status = -EIO;
4642 if (unlikely(bitmap[0]))
4643 goto xdr_error;
4644
4645 status = decode_attr_mode(xdr, bitmap, &fmode);
4646 if (status < 0)
4647 goto xdr_error;
4648 if (status != 0) {
4649 fattr->mode |= fmode;
4650 fattr->valid |= status;
4651 }
4652
4653 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4654 if (status < 0)
4655 goto xdr_error;
4656 fattr->valid |= status;
4657
4658 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4659 if (status < 0)
4660 goto xdr_error;
4661 fattr->valid |= status;
4662
4663 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4664 if (status < 0)
4665 goto xdr_error;
4666 fattr->valid |= status;
4667
4668 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4669 if (status < 0)
4670 goto xdr_error;
4671 fattr->valid |= status;
4672
4673 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4674 if (status < 0)
4675 goto xdr_error;
4676 fattr->valid |= status;
4677
4678 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4679 if (status < 0)
4680 goto xdr_error;
4681 fattr->valid |= status;
4682
4683 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4684 if (status < 0)
4685 goto xdr_error;
4686 fattr->valid |= status;
4687
4688 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4689 if (status < 0)
4690 goto xdr_error;
4691 fattr->valid |= status;
4692
4693 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4694 if (status < 0)
4695 goto xdr_error;
4696 fattr->valid |= status;
4697
4698 status = -EIO;
4699 if (unlikely(bitmap[1]))
4700 goto xdr_error;
4701
4702 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4703 if (status < 0)
4704 goto xdr_error;
4705
4706 if (label) {
4707 status = decode_attr_security_label(xdr, bitmap, label);
4708 if (status < 0)
4709 goto xdr_error;
4710 fattr->valid |= status;
4711 }
4712
4713xdr_error:
4714 dprintk("%s: xdr returned %d\n", __func__, -status);
4715 return status;
4716}
4717
4718static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4719 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4720 struct nfs4_label *label, const struct nfs_server *server)
4721{
4722 unsigned int savep;
4723 uint32_t attrlen,
4724 bitmap[3] = {0};
4725 int status;
4726
4727 status = decode_op_hdr(xdr, OP_GETATTR);
4728 if (status < 0)
4729 goto xdr_error;
4730
4731 status = decode_attr_bitmap(xdr, bitmap);
4732 if (status < 0)
4733 goto xdr_error;
4734
4735 status = decode_attr_length(xdr, &attrlen, &savep);
4736 if (status < 0)
4737 goto xdr_error;
4738
4739 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4740 label, server);
4741 if (status < 0)
4742 goto xdr_error;
4743
4744 status = verify_attr_len(xdr, savep, attrlen);
4745xdr_error:
4746 dprintk("%s: xdr returned %d\n", __func__, -status);
4747 return status;
4748}
4749
4750static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4751 struct nfs4_label *label, const struct nfs_server *server)
4752{
4753 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4754}
4755
4756static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4757 const struct nfs_server *server)
4758{
4759 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4760}
4761
4762/*
4763 * Decode potentially multiple layout types.
4764 */
4765static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4766 struct nfs_fsinfo *fsinfo)
4767{
4768 __be32 *p;
4769 uint32_t i;
4770
4771 p = xdr_inline_decode(xdr, 4);
4772 if (unlikely(!p))
4773 goto out_overflow;
4774 fsinfo->nlayouttypes = be32_to_cpup(p);
4775
4776 /* pNFS is not supported by the underlying file system */
4777 if (fsinfo->nlayouttypes == 0)
4778 return 0;
4779
4780 /* Decode and set first layout type, move xdr->p past unused types */
4781 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4782 if (unlikely(!p))
4783 goto out_overflow;
4784
4785 /* If we get too many, then just cap it at the max */
4786 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4787 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4788 __func__, fsinfo->nlayouttypes);
4789 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4790 }
4791
4792 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4793 fsinfo->layouttype[i] = be32_to_cpup(p++);
4794 return 0;
4795out_overflow:
4796 print_overflow_msg(__func__, xdr);
4797 return -EIO;
4798}
4799
4800/*
4801 * The type of file system exported.
4802 * Note we must ensure that layouttype is set in any non-error case.
4803 */
4804static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4805 struct nfs_fsinfo *fsinfo)
4806{
4807 int status = 0;
4808
4809 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4810 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4811 return -EIO;
4812 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4813 status = decode_pnfs_layout_types(xdr, fsinfo);
4814 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4815 }
4816 return status;
4817}
4818
4819/*
4820 * The prefered block size for layout directed io
4821 */
4822static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4823 uint32_t *res)
4824{
4825 __be32 *p;
4826
4827 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4828 *res = 0;
4829 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4830 p = xdr_inline_decode(xdr, 4);
4831 if (unlikely(!p)) {
4832 print_overflow_msg(__func__, xdr);
4833 return -EIO;
4834 }
4835 *res = be32_to_cpup(p);
4836 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4837 }
4838 return 0;
4839}
4840
4841/*
4842 * The granularity of a CLONE operation.
4843 */
4844static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4845 uint32_t *res)
4846{
4847 __be32 *p;
4848
4849 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4850 *res = 0;
4851 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4852 p = xdr_inline_decode(xdr, 4);
4853 if (unlikely(!p)) {
4854 print_overflow_msg(__func__, xdr);
4855 return -EIO;
4856 }
4857 *res = be32_to_cpup(p);
4858 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4859 }
4860 return 0;
4861}
4862
4863static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4864{
4865 unsigned int savep;
4866 uint32_t attrlen, bitmap[3];
4867 int status;
4868
4869 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4870 goto xdr_error;
4871 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4872 goto xdr_error;
4873 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4874 goto xdr_error;
4875
4876 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4877
4878 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4879 goto xdr_error;
4880 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4881 goto xdr_error;
4882 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4883 goto xdr_error;
4884 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4885 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4886 goto xdr_error;
4887 fsinfo->wtpref = fsinfo->wtmax;
4888
4889 status = -EIO;
4890 if (unlikely(bitmap[0]))
4891 goto xdr_error;
4892
4893 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4894 if (status != 0)
4895 goto xdr_error;
4896 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4897 if (status != 0)
4898 goto xdr_error;
4899
4900 status = -EIO;
4901 if (unlikely(bitmap[1]))
4902 goto xdr_error;
4903
4904 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4905 if (status)
4906 goto xdr_error;
4907 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4908 if (status)
4909 goto xdr_error;
4910
4911 status = verify_attr_len(xdr, savep, attrlen);
4912xdr_error:
4913 dprintk("%s: xdr returned %d!\n", __func__, -status);
4914 return status;
4915}
4916
4917static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4918{
4919 __be32 *p;
4920 uint32_t len;
4921 int status;
4922
4923 /* Zero handle first to allow comparisons */
4924 memset(fh, 0, sizeof(*fh));
4925
4926 status = decode_op_hdr(xdr, OP_GETFH);
4927 if (status)
4928 return status;
4929
4930 p = xdr_inline_decode(xdr, 4);
4931 if (unlikely(!p))
4932 goto out_overflow;
4933 len = be32_to_cpup(p);
4934 if (len > NFS4_FHSIZE)
4935 return -EIO;
4936 fh->size = len;
4937 p = xdr_inline_decode(xdr, len);
4938 if (unlikely(!p))
4939 goto out_overflow;
4940 memcpy(fh->data, p, len);
4941 return 0;
4942out_overflow:
4943 print_overflow_msg(__func__, xdr);
4944 return -EIO;
4945}
4946
4947static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4948{
4949 int status;
4950
4951 status = decode_op_hdr(xdr, OP_LINK);
4952 if (status)
4953 return status;
4954 return decode_change_info(xdr, cinfo);
4955}
4956
4957/*
4958 * We create the owner, so we know a proper owner.id length is 4.
4959 */
4960static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4961{
4962 uint64_t offset, length, clientid;
4963 __be32 *p;
4964 uint32_t namelen, type;
4965
4966 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4967 if (unlikely(!p))
4968 goto out_overflow;
4969 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4970 p = xdr_decode_hyper(p, &length);
4971 type = be32_to_cpup(p++); /* 4 byte read */
4972 if (fl != NULL) { /* manipulate file lock */
4973 fl->fl_start = (loff_t)offset;
4974 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4975 if (length == ~(uint64_t)0)
4976 fl->fl_end = OFFSET_MAX;
4977 fl->fl_type = F_WRLCK;
4978 if (type & 1)
4979 fl->fl_type = F_RDLCK;
4980 fl->fl_pid = 0;
4981 }
4982 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4983 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4984 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4985 if (likely(p))
4986 return -NFS4ERR_DENIED;
4987out_overflow:
4988 print_overflow_msg(__func__, xdr);
4989 return -EIO;
4990}
4991
4992static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4993{
4994 int status;
4995
4996 status = decode_op_hdr(xdr, OP_LOCK);
4997 if (status == -EIO)
4998 goto out;
4999 if (status == 0) {
5000 status = decode_lock_stateid(xdr, &res->stateid);
5001 if (unlikely(status))
5002 goto out;
5003 } else if (status == -NFS4ERR_DENIED)
5004 status = decode_lock_denied(xdr, NULL);
5005 if (res->open_seqid != NULL)
5006 nfs_increment_open_seqid(status, res->open_seqid);
5007 nfs_increment_lock_seqid(status, res->lock_seqid);
5008out:
5009 return status;
5010}
5011
5012static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5013{
5014 int status;
5015 status = decode_op_hdr(xdr, OP_LOCKT);
5016 if (status == -NFS4ERR_DENIED)
5017 return decode_lock_denied(xdr, res->denied);
5018 return status;
5019}
5020
5021static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5022{
5023 int status;
5024
5025 status = decode_op_hdr(xdr, OP_LOCKU);
5026 if (status != -EIO)
5027 nfs_increment_lock_seqid(status, res->seqid);
5028 if (status == 0)
5029 status = decode_lock_stateid(xdr, &res->stateid);
5030 return status;
5031}
5032
5033static int decode_release_lockowner(struct xdr_stream *xdr)
5034{
5035 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5036}
5037
5038static int decode_lookup(struct xdr_stream *xdr)
5039{
5040 return decode_op_hdr(xdr, OP_LOOKUP);
5041}
5042
5043/* This is too sick! */
5044static int decode_space_limit(struct xdr_stream *xdr,
5045 unsigned long *pagemod_limit)
5046{
5047 __be32 *p;
5048 uint32_t limit_type, nblocks, blocksize;
5049 u64 maxsize = 0;
5050
5051 p = xdr_inline_decode(xdr, 12);
5052 if (unlikely(!p))
5053 goto out_overflow;
5054 limit_type = be32_to_cpup(p++);
5055 switch (limit_type) {
5056 case NFS4_LIMIT_SIZE:
5057 xdr_decode_hyper(p, &maxsize);
5058 break;
5059 case NFS4_LIMIT_BLOCKS:
5060 nblocks = be32_to_cpup(p++);
5061 blocksize = be32_to_cpup(p);
5062 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5063 }
5064 maxsize >>= PAGE_SHIFT;
5065 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5066 return 0;
5067out_overflow:
5068 print_overflow_msg(__func__, xdr);
5069 return -EIO;
5070}
5071
5072static int decode_rw_delegation(struct xdr_stream *xdr,
5073 uint32_t delegation_type,
5074 struct nfs_openres *res)
5075{
5076 __be32 *p;
5077 int status;
5078
5079 status = decode_delegation_stateid(xdr, &res->delegation);
5080 if (unlikely(status))
5081 return status;
5082 p = xdr_inline_decode(xdr, 4);
5083 if (unlikely(!p))
5084 goto out_overflow;
5085 res->do_recall = be32_to_cpup(p);
5086
5087 switch (delegation_type) {
5088 case NFS4_OPEN_DELEGATE_READ:
5089 res->delegation_type = FMODE_READ;
5090 break;
5091 case NFS4_OPEN_DELEGATE_WRITE:
5092 res->delegation_type = FMODE_WRITE|FMODE_READ;
5093 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5094 return -EIO;
5095 }
5096 return decode_ace(xdr, NULL, res->server->nfs_client);
5097out_overflow:
5098 print_overflow_msg(__func__, xdr);
5099 return -EIO;
5100}
5101
5102static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5103{
5104 __be32 *p;
5105 uint32_t why_no_delegation;
5106
5107 p = xdr_inline_decode(xdr, 4);
5108 if (unlikely(!p))
5109 goto out_overflow;
5110 why_no_delegation = be32_to_cpup(p);
5111 switch (why_no_delegation) {
5112 case WND4_CONTENTION:
5113 case WND4_RESOURCE:
5114 xdr_inline_decode(xdr, 4);
5115 /* Ignore for now */
5116 }
5117 return 0;
5118out_overflow:
5119 print_overflow_msg(__func__, xdr);
5120 return -EIO;
5121}
5122
5123static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5124{
5125 __be32 *p;
5126 uint32_t delegation_type;
5127
5128 p = xdr_inline_decode(xdr, 4);
5129 if (unlikely(!p))
5130 goto out_overflow;
5131 delegation_type = be32_to_cpup(p);
5132 res->delegation_type = 0;
5133 switch (delegation_type) {
5134 case NFS4_OPEN_DELEGATE_NONE:
5135 return 0;
5136 case NFS4_OPEN_DELEGATE_READ:
5137 case NFS4_OPEN_DELEGATE_WRITE:
5138 return decode_rw_delegation(xdr, delegation_type, res);
5139 case NFS4_OPEN_DELEGATE_NONE_EXT:
5140 return decode_no_delegation(xdr, res);
5141 }
5142 return -EIO;
5143out_overflow:
5144 print_overflow_msg(__func__, xdr);
5145 return -EIO;
5146}
5147
5148static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5149{
5150 __be32 *p;
5151 uint32_t savewords, bmlen, i;
5152 int status;
5153
5154 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5155 return status;
5156 nfs_increment_open_seqid(status, res->seqid);
5157 if (status)
5158 return status;
5159 status = decode_open_stateid(xdr, &res->stateid);
5160 if (unlikely(status))
5161 return status;
5162
5163 decode_change_info(xdr, &res->cinfo);
5164
5165 p = xdr_inline_decode(xdr, 8);
5166 if (unlikely(!p))
5167 goto out_overflow;
5168 res->rflags = be32_to_cpup(p++);
5169 bmlen = be32_to_cpup(p);
5170 if (bmlen > 10)
5171 goto xdr_error;
5172
5173 p = xdr_inline_decode(xdr, bmlen << 2);
5174 if (unlikely(!p))
5175 goto out_overflow;
5176 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5177 for (i = 0; i < savewords; ++i)
5178 res->attrset[i] = be32_to_cpup(p++);
5179 for (; i < NFS4_BITMAP_SIZE; i++)
5180 res->attrset[i] = 0;
5181
5182 return decode_delegation(xdr, res);
5183xdr_error:
5184 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5185 return -EIO;
5186out_overflow:
5187 print_overflow_msg(__func__, xdr);
5188 return -EIO;
5189}
5190
5191static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5192{
5193 int status;
5194
5195 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5196 if (status != -EIO)
5197 nfs_increment_open_seqid(status, res->seqid);
5198 if (!status)
5199 status = decode_open_stateid(xdr, &res->stateid);
5200 return status;
5201}
5202
5203static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5204{
5205 int status;
5206
5207 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5208 if (status != -EIO)
5209 nfs_increment_open_seqid(status, res->seqid);
5210 if (!status)
5211 status = decode_open_stateid(xdr, &res->stateid);
5212 return status;
5213}
5214
5215static int decode_putfh(struct xdr_stream *xdr)
5216{
5217 return decode_op_hdr(xdr, OP_PUTFH);
5218}
5219
5220static int decode_putrootfh(struct xdr_stream *xdr)
5221{
5222 return decode_op_hdr(xdr, OP_PUTROOTFH);
5223}
5224
5225static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5226 struct nfs_pgio_res *res)
5227{
5228 __be32 *p;
5229 uint32_t count, eof, recvd;
5230 int status;
5231
5232 status = decode_op_hdr(xdr, OP_READ);
5233 if (status)
5234 return status;
5235 p = xdr_inline_decode(xdr, 8);
5236 if (unlikely(!p))
5237 goto out_overflow;
5238 eof = be32_to_cpup(p++);
5239 count = be32_to_cpup(p);
5240 recvd = xdr_read_pages(xdr, count);
5241 if (count > recvd) {
5242 dprintk("NFS: server cheating in read reply: "
5243 "count %u > recvd %u\n", count, recvd);
5244 count = recvd;
5245 eof = 0;
5246 }
5247 res->eof = eof;
5248 res->count = count;
5249 return 0;
5250out_overflow:
5251 print_overflow_msg(__func__, xdr);
5252 return -EIO;
5253}
5254
5255static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5256{
5257 int status;
5258 __be32 verf[2];
5259
5260 status = decode_op_hdr(xdr, OP_READDIR);
5261 if (!status)
5262 status = decode_verifier(xdr, readdir->verifier.data);
5263 if (unlikely(status))
5264 return status;
5265 memcpy(verf, readdir->verifier.data, sizeof(verf));
5266 dprintk("%s: verifier = %08x:%08x\n",
5267 __func__, verf[0], verf[1]);
5268 return xdr_read_pages(xdr, xdr->buf->page_len);
5269}
5270
5271static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5272{
5273 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5274 u32 len, recvd;
5275 __be32 *p;
5276 int status;
5277
5278 status = decode_op_hdr(xdr, OP_READLINK);
5279 if (status)
5280 return status;
5281
5282 /* Convert length of symlink */
5283 p = xdr_inline_decode(xdr, 4);
5284 if (unlikely(!p))
5285 goto out_overflow;
5286 len = be32_to_cpup(p);
5287 if (len >= rcvbuf->page_len || len <= 0) {
5288 dprintk("nfs: server returned giant symlink!\n");
5289 return -ENAMETOOLONG;
5290 }
5291 recvd = xdr_read_pages(xdr, len);
5292 if (recvd < len) {
5293 dprintk("NFS: server cheating in readlink reply: "
5294 "count %u > recvd %u\n", len, recvd);
5295 return -EIO;
5296 }
5297 /*
5298 * The XDR encode routine has set things up so that
5299 * the link text will be copied directly into the
5300 * buffer. We just have to do overflow-checking,
5301 * and and null-terminate the text (the VFS expects
5302 * null-termination).
5303 */
5304 xdr_terminate_string(rcvbuf, len);
5305 return 0;
5306out_overflow:
5307 print_overflow_msg(__func__, xdr);
5308 return -EIO;
5309}
5310
5311static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5312{
5313 int status;
5314
5315 status = decode_op_hdr(xdr, OP_REMOVE);
5316 if (status)
5317 goto out;
5318 status = decode_change_info(xdr, cinfo);
5319out:
5320 return status;
5321}
5322
5323static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5324 struct nfs4_change_info *new_cinfo)
5325{
5326 int status;
5327
5328 status = decode_op_hdr(xdr, OP_RENAME);
5329 if (status)
5330 goto out;
5331 if ((status = decode_change_info(xdr, old_cinfo)))
5332 goto out;
5333 status = decode_change_info(xdr, new_cinfo);
5334out:
5335 return status;
5336}
5337
5338static int decode_renew(struct xdr_stream *xdr)
5339{
5340 return decode_op_hdr(xdr, OP_RENEW);
5341}
5342
5343static int
5344decode_restorefh(struct xdr_stream *xdr)
5345{
5346 return decode_op_hdr(xdr, OP_RESTOREFH);
5347}
5348
5349static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5350 struct nfs_getaclres *res)
5351{
5352 unsigned int savep;
5353 uint32_t attrlen,
5354 bitmap[3] = {0};
5355 int status;
5356 unsigned int pg_offset;
5357
5358 res->acl_len = 0;
5359 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5360 goto out;
5361
5362 xdr_enter_page(xdr, xdr->buf->page_len);
5363
5364 /* Calculate the offset of the page data */
5365 pg_offset = xdr->buf->head[0].iov_len;
5366
5367 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5368 goto out;
5369 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5370 goto out;
5371
5372 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5373 return -EIO;
5374 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5375
5376 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5377 * are stored with the acl data to handle the problem of
5378 * variable length bitmaps.*/
5379 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5380 res->acl_len = attrlen;
5381
5382 /* Check for receive buffer overflow */
5383 if (res->acl_len > (xdr->nwords << 2) ||
5384 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5385 res->acl_flags |= NFS4_ACL_TRUNC;
5386 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5387 attrlen, xdr->nwords << 2);
5388 }
5389 } else
5390 status = -EOPNOTSUPP;
5391
5392out:
5393 return status;
5394}
5395
5396static int
5397decode_savefh(struct xdr_stream *xdr)
5398{
5399 return decode_op_hdr(xdr, OP_SAVEFH);
5400}
5401
5402static int decode_setattr(struct xdr_stream *xdr)
5403{
5404 __be32 *p;
5405 uint32_t bmlen;
5406 int status;
5407
5408 status = decode_op_hdr(xdr, OP_SETATTR);
5409 if (status)
5410 return status;
5411 p = xdr_inline_decode(xdr, 4);
5412 if (unlikely(!p))
5413 goto out_overflow;
5414 bmlen = be32_to_cpup(p);
5415 p = xdr_inline_decode(xdr, bmlen << 2);
5416 if (likely(p))
5417 return 0;
5418out_overflow:
5419 print_overflow_msg(__func__, xdr);
5420 return -EIO;
5421}
5422
5423static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5424{
5425 __be32 *p;
5426 uint32_t opnum;
5427 int32_t nfserr;
5428
5429 p = xdr_inline_decode(xdr, 8);
5430 if (unlikely(!p))
5431 goto out_overflow;
5432 opnum = be32_to_cpup(p++);
5433 if (opnum != OP_SETCLIENTID) {
5434 dprintk("nfs: decode_setclientid: Server returned operation"
5435 " %d\n", opnum);
5436 return -EIO;
5437 }
5438 nfserr = be32_to_cpup(p);
5439 if (nfserr == NFS_OK) {
5440 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5441 if (unlikely(!p))
5442 goto out_overflow;
5443 p = xdr_decode_hyper(p, &res->clientid);
5444 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5445 } else if (nfserr == NFSERR_CLID_INUSE) {
5446 uint32_t len;
5447
5448 /* skip netid string */
5449 p = xdr_inline_decode(xdr, 4);
5450 if (unlikely(!p))
5451 goto out_overflow;
5452 len = be32_to_cpup(p);
5453 p = xdr_inline_decode(xdr, len);
5454 if (unlikely(!p))
5455 goto out_overflow;
5456
5457 /* skip uaddr string */
5458 p = xdr_inline_decode(xdr, 4);
5459 if (unlikely(!p))
5460 goto out_overflow;
5461 len = be32_to_cpup(p);
5462 p = xdr_inline_decode(xdr, len);
5463 if (unlikely(!p))
5464 goto out_overflow;
5465 return -NFSERR_CLID_INUSE;
5466 } else
5467 return nfs4_stat_to_errno(nfserr);
5468
5469 return 0;
5470out_overflow:
5471 print_overflow_msg(__func__, xdr);
5472 return -EIO;
5473}
5474
5475static int decode_setclientid_confirm(struct xdr_stream *xdr)
5476{
5477 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5478}
5479
5480static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5481{
5482 __be32 *p;
5483 int status;
5484
5485 status = decode_op_hdr(xdr, OP_WRITE);
5486 if (status)
5487 return status;
5488
5489 p = xdr_inline_decode(xdr, 8);
5490 if (unlikely(!p))
5491 goto out_overflow;
5492 res->count = be32_to_cpup(p++);
5493 res->verf->committed = be32_to_cpup(p++);
5494 return decode_write_verifier(xdr, &res->verf->verifier);
5495out_overflow:
5496 print_overflow_msg(__func__, xdr);
5497 return -EIO;
5498}
5499
5500static int decode_delegreturn(struct xdr_stream *xdr)
5501{
5502 return decode_op_hdr(xdr, OP_DELEGRETURN);
5503}
5504
5505static int decode_secinfo_gss(struct xdr_stream *xdr,
5506 struct nfs4_secinfo4 *flavor)
5507{
5508 u32 oid_len;
5509 __be32 *p;
5510
5511 p = xdr_inline_decode(xdr, 4);
5512 if (unlikely(!p))
5513 goto out_overflow;
5514 oid_len = be32_to_cpup(p);
5515 if (oid_len > GSS_OID_MAX_LEN)
5516 goto out_err;
5517
5518 p = xdr_inline_decode(xdr, oid_len);
5519 if (unlikely(!p))
5520 goto out_overflow;
5521 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5522 flavor->flavor_info.oid.len = oid_len;
5523
5524 p = xdr_inline_decode(xdr, 8);
5525 if (unlikely(!p))
5526 goto out_overflow;
5527 flavor->flavor_info.qop = be32_to_cpup(p++);
5528 flavor->flavor_info.service = be32_to_cpup(p);
5529
5530 return 0;
5531
5532out_overflow:
5533 print_overflow_msg(__func__, xdr);
5534 return -EIO;
5535out_err:
5536 return -EINVAL;
5537}
5538
5539static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5540{
5541 struct nfs4_secinfo4 *sec_flavor;
5542 unsigned int i, num_flavors;
5543 int status;
5544 __be32 *p;
5545
5546 p = xdr_inline_decode(xdr, 4);
5547 if (unlikely(!p))
5548 goto out_overflow;
5549
5550 res->flavors->num_flavors = 0;
5551 num_flavors = be32_to_cpup(p);
5552
5553 for (i = 0; i < num_flavors; i++) {
5554 sec_flavor = &res->flavors->flavors[i];
5555 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5556 break;
5557
5558 p = xdr_inline_decode(xdr, 4);
5559 if (unlikely(!p))
5560 goto out_overflow;
5561 sec_flavor->flavor = be32_to_cpup(p);
5562
5563 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5564 status = decode_secinfo_gss(xdr, sec_flavor);
5565 if (status)
5566 goto out;
5567 }
5568 res->flavors->num_flavors++;
5569 }
5570
5571 status = 0;
5572out:
5573 return status;
5574out_overflow:
5575 print_overflow_msg(__func__, xdr);
5576 return -EIO;
5577}
5578
5579static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5580{
5581 int status = decode_op_hdr(xdr, OP_SECINFO);
5582 if (status)
5583 return status;
5584 return decode_secinfo_common(xdr, res);
5585}
5586
5587#if defined(CONFIG_NFS_V4_1)
5588static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5589{
5590 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5591 if (status)
5592 return status;
5593 return decode_secinfo_common(xdr, res);
5594}
5595
5596static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5597{
5598 __be32 *p;
5599 uint32_t bitmap_words;
5600 unsigned int i;
5601
5602 p = xdr_inline_decode(xdr, 4);
5603 bitmap_words = be32_to_cpup(p++);
5604 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5605 return -EIO;
5606 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5607 for (i = 0; i < bitmap_words; i++)
5608 op_map->u.words[i] = be32_to_cpup(p++);
5609
5610 return 0;
5611}
5612
5613static int decode_exchange_id(struct xdr_stream *xdr,
5614 struct nfs41_exchange_id_res *res)
5615{
5616 __be32 *p;
5617 uint32_t dummy;
5618 char *dummy_str;
5619 int status;
5620 uint32_t impl_id_count;
5621
5622 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5623 if (status)
5624 return status;
5625
5626 p = xdr_inline_decode(xdr, 8);
5627 if (unlikely(!p))
5628 goto out_overflow;
5629 xdr_decode_hyper(p, &res->clientid);
5630 p = xdr_inline_decode(xdr, 12);
5631 if (unlikely(!p))
5632 goto out_overflow;
5633 res->seqid = be32_to_cpup(p++);
5634 res->flags = be32_to_cpup(p++);
5635
5636 res->state_protect.how = be32_to_cpup(p);
5637 switch (res->state_protect.how) {
5638 case SP4_NONE:
5639 break;
5640 case SP4_MACH_CRED:
5641 status = decode_op_map(xdr, &res->state_protect.enforce);
5642 if (status)
5643 return status;
5644 status = decode_op_map(xdr, &res->state_protect.allow);
5645 if (status)
5646 return status;
5647 break;
5648 default:
5649 WARN_ON_ONCE(1);
5650 return -EIO;
5651 }
5652
5653 /* server_owner4.so_minor_id */
5654 p = xdr_inline_decode(xdr, 8);
5655 if (unlikely(!p))
5656 goto out_overflow;
5657 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5658
5659 /* server_owner4.so_major_id */
5660 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5661 if (unlikely(status))
5662 return status;
5663 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5664 return -EIO;
5665 memcpy(res->server_owner->major_id, dummy_str, dummy);
5666 res->server_owner->major_id_sz = dummy;
5667
5668 /* server_scope4 */
5669 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5670 if (unlikely(status))
5671 return status;
5672 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5673 return -EIO;
5674 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5675 res->server_scope->server_scope_sz = dummy;
5676
5677 /* Implementation Id */
5678 p = xdr_inline_decode(xdr, 4);
5679 if (unlikely(!p))
5680 goto out_overflow;
5681 impl_id_count = be32_to_cpup(p++);
5682
5683 if (impl_id_count) {
5684 /* nii_domain */
5685 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5686 if (unlikely(status))
5687 return status;
5688 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5689 return -EIO;
5690 memcpy(res->impl_id->domain, dummy_str, dummy);
5691
5692 /* nii_name */
5693 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5694 if (unlikely(status))
5695 return status;
5696 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5697 return -EIO;
5698 memcpy(res->impl_id->name, dummy_str, dummy);
5699
5700 /* nii_date */
5701 p = xdr_inline_decode(xdr, 12);
5702 if (unlikely(!p))
5703 goto out_overflow;
5704 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5705 res->impl_id->date.nseconds = be32_to_cpup(p);
5706
5707 /* if there's more than one entry, ignore the rest */
5708 }
5709 return 0;
5710out_overflow:
5711 print_overflow_msg(__func__, xdr);
5712 return -EIO;
5713}
5714
5715static int decode_chan_attrs(struct xdr_stream *xdr,
5716 struct nfs4_channel_attrs *attrs)
5717{
5718 __be32 *p;
5719 u32 nr_attrs, val;
5720
5721 p = xdr_inline_decode(xdr, 28);
5722 if (unlikely(!p))
5723 goto out_overflow;
5724 val = be32_to_cpup(p++); /* headerpadsz */
5725 if (val)
5726 return -EINVAL; /* no support for header padding yet */
5727 attrs->max_rqst_sz = be32_to_cpup(p++);
5728 attrs->max_resp_sz = be32_to_cpup(p++);
5729 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5730 attrs->max_ops = be32_to_cpup(p++);
5731 attrs->max_reqs = be32_to_cpup(p++);
5732 nr_attrs = be32_to_cpup(p);
5733 if (unlikely(nr_attrs > 1)) {
5734 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5735 "count %u\n", __func__, nr_attrs);
5736 return -EINVAL;
5737 }
5738 if (nr_attrs == 1) {
5739 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5740 if (unlikely(!p))
5741 goto out_overflow;
5742 }
5743 return 0;
5744out_overflow:
5745 print_overflow_msg(__func__, xdr);
5746 return -EIO;
5747}
5748
5749static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5750{
5751 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5752}
5753
5754static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5755 struct nfs41_bind_conn_to_session_res *res)
5756{
5757 __be32 *p;
5758 int status;
5759
5760 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5761 if (!status)
5762 status = decode_sessionid(xdr, &res->sessionid);
5763 if (unlikely(status))
5764 return status;
5765
5766 /* dir flags, rdma mode bool */
5767 p = xdr_inline_decode(xdr, 8);
5768 if (unlikely(!p))
5769 goto out_overflow;
5770
5771 res->dir = be32_to_cpup(p++);
5772 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5773 return -EIO;
5774 if (be32_to_cpup(p) == 0)
5775 res->use_conn_in_rdma_mode = false;
5776 else
5777 res->use_conn_in_rdma_mode = true;
5778
5779 return 0;
5780out_overflow:
5781 print_overflow_msg(__func__, xdr);
5782 return -EIO;
5783}
5784
5785static int decode_create_session(struct xdr_stream *xdr,
5786 struct nfs41_create_session_res *res)
5787{
5788 __be32 *p;
5789 int status;
5790
5791 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5792 if (!status)
5793 status = decode_sessionid(xdr, &res->sessionid);
5794 if (unlikely(status))
5795 return status;
5796
5797 /* seqid, flags */
5798 p = xdr_inline_decode(xdr, 8);
5799 if (unlikely(!p))
5800 goto out_overflow;
5801 res->seqid = be32_to_cpup(p++);
5802 res->flags = be32_to_cpup(p);
5803
5804 /* Channel attributes */
5805 status = decode_chan_attrs(xdr, &res->fc_attrs);
5806 if (!status)
5807 status = decode_chan_attrs(xdr, &res->bc_attrs);
5808 return status;
5809out_overflow:
5810 print_overflow_msg(__func__, xdr);
5811 return -EIO;
5812}
5813
5814static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5815{
5816 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5817}
5818
5819static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5820{
5821 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5822}
5823
5824static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5825{
5826 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5827}
5828#endif /* CONFIG_NFS_V4_1 */
5829
5830static int decode_sequence(struct xdr_stream *xdr,
5831 struct nfs4_sequence_res *res,
5832 struct rpc_rqst *rqstp)
5833{
5834#if defined(CONFIG_NFS_V4_1)
5835 struct nfs4_session *session;
5836 struct nfs4_sessionid id;
5837 u32 dummy;
5838 int status;
5839 __be32 *p;
5840
5841 if (res->sr_slot == NULL)
5842 return 0;
5843 if (!res->sr_slot->table->session)
5844 return 0;
5845
5846 status = decode_op_hdr(xdr, OP_SEQUENCE);
5847 if (!status)
5848 status = decode_sessionid(xdr, &id);
5849 if (unlikely(status))
5850 goto out_err;
5851
5852 /*
5853 * If the server returns different values for sessionID, slotID or
5854 * sequence number, the server is looney tunes.
5855 */
5856 status = -EREMOTEIO;
5857 session = res->sr_slot->table->session;
5858
5859 if (memcmp(id.data, session->sess_id.data,
5860 NFS4_MAX_SESSIONID_LEN)) {
5861 dprintk("%s Invalid session id\n", __func__);
5862 goto out_err;
5863 }
5864
5865 p = xdr_inline_decode(xdr, 20);
5866 if (unlikely(!p))
5867 goto out_overflow;
5868
5869 /* seqid */
5870 dummy = be32_to_cpup(p++);
5871 if (dummy != res->sr_slot->seq_nr) {
5872 dprintk("%s Invalid sequence number\n", __func__);
5873 goto out_err;
5874 }
5875 /* slot id */
5876 dummy = be32_to_cpup(p++);
5877 if (dummy != res->sr_slot->slot_nr) {
5878 dprintk("%s Invalid slot id\n", __func__);
5879 goto out_err;
5880 }
5881 /* highest slot id */
5882 res->sr_highest_slotid = be32_to_cpup(p++);
5883 /* target highest slot id */
5884 res->sr_target_highest_slotid = be32_to_cpup(p++);
5885 /* result flags */
5886 res->sr_status_flags = be32_to_cpup(p);
5887 status = 0;
5888out_err:
5889 res->sr_status = status;
5890 return status;
5891out_overflow:
5892 print_overflow_msg(__func__, xdr);
5893 status = -EIO;
5894 goto out_err;
5895#else /* CONFIG_NFS_V4_1 */
5896 return 0;
5897#endif /* CONFIG_NFS_V4_1 */
5898}
5899
5900#if defined(CONFIG_NFS_V4_1)
5901static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5902{
5903 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5904 return decode_stateid(xdr, stateid);
5905}
5906
5907static int decode_getdeviceinfo(struct xdr_stream *xdr,
5908 struct nfs4_getdeviceinfo_res *res)
5909{
5910 struct pnfs_device *pdev = res->pdev;
5911 __be32 *p;
5912 uint32_t len, type;
5913 int status;
5914
5915 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5916 if (status) {
5917 if (status == -ETOOSMALL) {
5918 p = xdr_inline_decode(xdr, 4);
5919 if (unlikely(!p))
5920 goto out_overflow;
5921 pdev->mincount = be32_to_cpup(p);
5922 dprintk("%s: Min count too small. mincnt = %u\n",
5923 __func__, pdev->mincount);
5924 }
5925 return status;
5926 }
5927
5928 p = xdr_inline_decode(xdr, 8);
5929 if (unlikely(!p))
5930 goto out_overflow;
5931 type = be32_to_cpup(p++);
5932 if (type != pdev->layout_type) {
5933 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5934 __func__, pdev->layout_type, type);
5935 return -EINVAL;
5936 }
5937 /*
5938 * Get the length of the opaque device_addr4. xdr_read_pages places
5939 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5940 * and places the remaining xdr data in xdr_buf->tail
5941 */
5942 pdev->mincount = be32_to_cpup(p);
5943 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5944 goto out_overflow;
5945
5946 /* Parse notification bitmap, verifying that it is zero. */
5947 p = xdr_inline_decode(xdr, 4);
5948 if (unlikely(!p))
5949 goto out_overflow;
5950 len = be32_to_cpup(p);
5951 if (len) {
5952 uint32_t i;
5953
5954 p = xdr_inline_decode(xdr, 4 * len);
5955 if (unlikely(!p))
5956 goto out_overflow;
5957
5958 res->notification = be32_to_cpup(p++);
5959 for (i = 1; i < len; i++) {
5960 if (be32_to_cpup(p++)) {
5961 dprintk("%s: unsupported notification\n",
5962 __func__);
5963 return -EIO;
5964 }
5965 }
5966 }
5967 return 0;
5968out_overflow:
5969 print_overflow_msg(__func__, xdr);
5970 return -EIO;
5971}
5972
5973static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5974 struct nfs4_layoutget_res *res)
5975{
5976 __be32 *p;
5977 int status;
5978 u32 layout_count;
5979 u32 recvd;
5980
5981 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5982 if (status)
5983 return status;
5984 p = xdr_inline_decode(xdr, 4);
5985 if (unlikely(!p))
5986 goto out_overflow;
5987 res->return_on_close = be32_to_cpup(p);
5988 decode_layout_stateid(xdr, &res->stateid);
5989 p = xdr_inline_decode(xdr, 4);
5990 if (unlikely(!p))
5991 goto out_overflow;
5992 layout_count = be32_to_cpup(p);
5993 if (!layout_count) {
5994 dprintk("%s: server responded with empty layout array\n",
5995 __func__);
5996 return -EINVAL;
5997 }
5998
5999 p = xdr_inline_decode(xdr, 28);
6000 if (unlikely(!p))
6001 goto out_overflow;
6002 p = xdr_decode_hyper(p, &res->range.offset);
6003 p = xdr_decode_hyper(p, &res->range.length);
6004 res->range.iomode = be32_to_cpup(p++);
6005 res->type = be32_to_cpup(p++);
6006 res->layoutp->len = be32_to_cpup(p);
6007
6008 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6009 __func__,
6010 (unsigned long)res->range.offset,
6011 (unsigned long)res->range.length,
6012 res->range.iomode,
6013 res->type,
6014 res->layoutp->len);
6015
6016 recvd = xdr_read_pages(xdr, res->layoutp->len);
6017 if (res->layoutp->len > recvd) {
6018 dprintk("NFS: server cheating in layoutget reply: "
6019 "layout len %u > recvd %u\n",
6020 res->layoutp->len, recvd);
6021 return -EINVAL;
6022 }
6023
6024 if (layout_count > 1) {
6025 /* We only handle a length one array at the moment. Any
6026 * further entries are just ignored. Note that this means
6027 * the client may see a response that is less than the
6028 * minimum it requested.
6029 */
6030 dprintk("%s: server responded with %d layouts, dropping tail\n",
6031 __func__, layout_count);
6032 }
6033
6034 return 0;
6035out_overflow:
6036 print_overflow_msg(__func__, xdr);
6037 return -EIO;
6038}
6039
6040static int decode_layoutreturn(struct xdr_stream *xdr,
6041 struct nfs4_layoutreturn_res *res)
6042{
6043 __be32 *p;
6044 int status;
6045
6046 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6047 if (status)
6048 return status;
6049 p = xdr_inline_decode(xdr, 4);
6050 if (unlikely(!p))
6051 goto out_overflow;
6052 res->lrs_present = be32_to_cpup(p);
6053 if (res->lrs_present)
6054 status = decode_layout_stateid(xdr, &res->stateid);
6055 return status;
6056out_overflow:
6057 print_overflow_msg(__func__, xdr);
6058 return -EIO;
6059}
6060
6061static int decode_layoutcommit(struct xdr_stream *xdr,
6062 struct rpc_rqst *req,
6063 struct nfs4_layoutcommit_res *res)
6064{
6065 __be32 *p;
6066 __u32 sizechanged;
6067 int status;
6068
6069 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6070 res->status = status;
6071 if (status)
6072 return status;
6073
6074 p = xdr_inline_decode(xdr, 4);
6075 if (unlikely(!p))
6076 goto out_overflow;
6077 sizechanged = be32_to_cpup(p);
6078
6079 if (sizechanged) {
6080 /* throw away new size */
6081 p = xdr_inline_decode(xdr, 8);
6082 if (unlikely(!p))
6083 goto out_overflow;
6084 }
6085 return 0;
6086out_overflow:
6087 print_overflow_msg(__func__, xdr);
6088 return -EIO;
6089}
6090
6091static int decode_test_stateid(struct xdr_stream *xdr,
6092 struct nfs41_test_stateid_res *res)
6093{
6094 __be32 *p;
6095 int status;
6096 int num_res;
6097
6098 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6099 if (status)
6100 return status;
6101
6102 p = xdr_inline_decode(xdr, 4);
6103 if (unlikely(!p))
6104 goto out_overflow;
6105 num_res = be32_to_cpup(p++);
6106 if (num_res != 1)
6107 goto out;
6108
6109 p = xdr_inline_decode(xdr, 4);
6110 if (unlikely(!p))
6111 goto out_overflow;
6112 res->status = be32_to_cpup(p++);
6113
6114 return status;
6115out_overflow:
6116 print_overflow_msg(__func__, xdr);
6117out:
6118 return -EIO;
6119}
6120
6121static int decode_free_stateid(struct xdr_stream *xdr,
6122 struct nfs41_free_stateid_res *res)
6123{
6124 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6125 return res->status;
6126}
6127#else
6128static inline
6129int decode_layoutreturn(struct xdr_stream *xdr,
6130 struct nfs4_layoutreturn_res *res)
6131{
6132 return 0;
6133}
6134#endif /* CONFIG_NFS_V4_1 */
6135
6136/*
6137 * END OF "GENERIC" DECODE ROUTINES.
6138 */
6139
6140/*
6141 * Decode OPEN_DOWNGRADE response
6142 */
6143static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6144 struct xdr_stream *xdr,
6145 struct nfs_closeres *res)
6146{
6147 struct compound_hdr hdr;
6148 int status;
6149
6150 status = decode_compound_hdr(xdr, &hdr);
6151 if (status)
6152 goto out;
6153 status = decode_sequence(xdr, &res->seq_res, rqstp);
6154 if (status)
6155 goto out;
6156 status = decode_putfh(xdr);
6157 if (status)
6158 goto out;
6159 if (res->lr_res) {
6160 status = decode_layoutreturn(xdr, res->lr_res);
6161 res->lr_ret = status;
6162 if (status)
6163 goto out;
6164 }
6165 status = decode_open_downgrade(xdr, res);
6166out:
6167 return status;
6168}
6169
6170/*
6171 * Decode ACCESS response
6172 */
6173static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6174 struct nfs4_accessres *res)
6175{
6176 struct compound_hdr hdr;
6177 int status;
6178
6179 status = decode_compound_hdr(xdr, &hdr);
6180 if (status)
6181 goto out;
6182 status = decode_sequence(xdr, &res->seq_res, rqstp);
6183 if (status)
6184 goto out;
6185 status = decode_putfh(xdr);
6186 if (status != 0)
6187 goto out;
6188 status = decode_access(xdr, &res->supported, &res->access);
6189 if (status != 0)
6190 goto out;
6191 decode_getfattr(xdr, res->fattr, res->server);
6192out:
6193 return status;
6194}
6195
6196/*
6197 * Decode LOOKUP response
6198 */
6199static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6200 struct nfs4_lookup_res *res)
6201{
6202 struct compound_hdr hdr;
6203 int status;
6204
6205 status = decode_compound_hdr(xdr, &hdr);
6206 if (status)
6207 goto out;
6208 status = decode_sequence(xdr, &res->seq_res, rqstp);
6209 if (status)
6210 goto out;
6211 status = decode_putfh(xdr);
6212 if (status)
6213 goto out;
6214 status = decode_lookup(xdr);
6215 if (status)
6216 goto out;
6217 status = decode_getfh(xdr, res->fh);
6218 if (status)
6219 goto out;
6220 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6221out:
6222 return status;
6223}
6224
6225/*
6226 * Decode LOOKUP_ROOT response
6227 */
6228static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6229 struct xdr_stream *xdr,
6230 struct nfs4_lookup_res *res)
6231{
6232 struct compound_hdr hdr;
6233 int status;
6234
6235 status = decode_compound_hdr(xdr, &hdr);
6236 if (status)
6237 goto out;
6238 status = decode_sequence(xdr, &res->seq_res, rqstp);
6239 if (status)
6240 goto out;
6241 status = decode_putrootfh(xdr);
6242 if (status)
6243 goto out;
6244 status = decode_getfh(xdr, res->fh);
6245 if (status == 0)
6246 status = decode_getfattr_label(xdr, res->fattr,
6247 res->label, res->server);
6248out:
6249 return status;
6250}
6251
6252/*
6253 * Decode REMOVE response
6254 */
6255static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6256 struct nfs_removeres *res)
6257{
6258 struct compound_hdr hdr;
6259 int status;
6260
6261 status = decode_compound_hdr(xdr, &hdr);
6262 if (status)
6263 goto out;
6264 status = decode_sequence(xdr, &res->seq_res, rqstp);
6265 if (status)
6266 goto out;
6267 status = decode_putfh(xdr);
6268 if (status)
6269 goto out;
6270 status = decode_remove(xdr, &res->cinfo);
6271out:
6272 return status;
6273}
6274
6275/*
6276 * Decode RENAME response
6277 */
6278static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6279 struct nfs_renameres *res)
6280{
6281 struct compound_hdr hdr;
6282 int status;
6283
6284 status = decode_compound_hdr(xdr, &hdr);
6285 if (status)
6286 goto out;
6287 status = decode_sequence(xdr, &res->seq_res, rqstp);
6288 if (status)
6289 goto out;
6290 status = decode_putfh(xdr);
6291 if (status)
6292 goto out;
6293 status = decode_savefh(xdr);
6294 if (status)
6295 goto out;
6296 status = decode_putfh(xdr);
6297 if (status)
6298 goto out;
6299 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6300out:
6301 return status;
6302}
6303
6304/*
6305 * Decode LINK response
6306 */
6307static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6308 struct nfs4_link_res *res)
6309{
6310 struct compound_hdr hdr;
6311 int status;
6312
6313 status = decode_compound_hdr(xdr, &hdr);
6314 if (status)
6315 goto out;
6316 status = decode_sequence(xdr, &res->seq_res, rqstp);
6317 if (status)
6318 goto out;
6319 status = decode_putfh(xdr);
6320 if (status)
6321 goto out;
6322 status = decode_savefh(xdr);
6323 if (status)
6324 goto out;
6325 status = decode_putfh(xdr);
6326 if (status)
6327 goto out;
6328 status = decode_link(xdr, &res->cinfo);
6329 if (status)
6330 goto out;
6331 /*
6332 * Note order: OP_LINK leaves the directory as the current
6333 * filehandle.
6334 */
6335 status = decode_restorefh(xdr);
6336 if (status)
6337 goto out;
6338 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6339out:
6340 return status;
6341}
6342
6343/*
6344 * Decode CREATE response
6345 */
6346static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6347 struct nfs4_create_res *res)
6348{
6349 struct compound_hdr hdr;
6350 int status;
6351
6352 status = decode_compound_hdr(xdr, &hdr);
6353 if (status)
6354 goto out;
6355 status = decode_sequence(xdr, &res->seq_res, rqstp);
6356 if (status)
6357 goto out;
6358 status = decode_putfh(xdr);
6359 if (status)
6360 goto out;
6361 status = decode_create(xdr, &res->dir_cinfo);
6362 if (status)
6363 goto out;
6364 status = decode_getfh(xdr, res->fh);
6365 if (status)
6366 goto out;
6367 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6368out:
6369 return status;
6370}
6371
6372/*
6373 * Decode SYMLINK response
6374 */
6375static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6376 struct nfs4_create_res *res)
6377{
6378 return nfs4_xdr_dec_create(rqstp, xdr, res);
6379}
6380
6381/*
6382 * Decode GETATTR response
6383 */
6384static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6385 struct nfs4_getattr_res *res)
6386{
6387 struct compound_hdr hdr;
6388 int status;
6389
6390 status = decode_compound_hdr(xdr, &hdr);
6391 if (status)
6392 goto out;
6393 status = decode_sequence(xdr, &res->seq_res, rqstp);
6394 if (status)
6395 goto out;
6396 status = decode_putfh(xdr);
6397 if (status)
6398 goto out;
6399 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6400out:
6401 return status;
6402}
6403
6404/*
6405 * Encode an SETACL request
6406 */
6407static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6408 struct nfs_setaclargs *args)
6409{
6410 struct compound_hdr hdr = {
6411 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6412 };
6413
6414 encode_compound_hdr(xdr, req, &hdr);
6415 encode_sequence(xdr, &args->seq_args, &hdr);
6416 encode_putfh(xdr, args->fh, &hdr);
6417 encode_setacl(xdr, args, &hdr);
6418 encode_nops(&hdr);
6419}
6420
6421/*
6422 * Decode SETACL response
6423 */
6424static int
6425nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6426 struct nfs_setaclres *res)
6427{
6428 struct compound_hdr hdr;
6429 int status;
6430
6431 status = decode_compound_hdr(xdr, &hdr);
6432 if (status)
6433 goto out;
6434 status = decode_sequence(xdr, &res->seq_res, rqstp);
6435 if (status)
6436 goto out;
6437 status = decode_putfh(xdr);
6438 if (status)
6439 goto out;
6440 status = decode_setattr(xdr);
6441out:
6442 return status;
6443}
6444
6445/*
6446 * Decode GETACL response
6447 */
6448static int
6449nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6450 struct nfs_getaclres *res)
6451{
6452 struct compound_hdr hdr;
6453 int status;
6454
6455 if (res->acl_scratch != NULL) {
6456 void *p = page_address(res->acl_scratch);
6457 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6458 }
6459 status = decode_compound_hdr(xdr, &hdr);
6460 if (status)
6461 goto out;
6462 status = decode_sequence(xdr, &res->seq_res, rqstp);
6463 if (status)
6464 goto out;
6465 status = decode_putfh(xdr);
6466 if (status)
6467 goto out;
6468 status = decode_getacl(xdr, rqstp, res);
6469
6470out:
6471 return status;
6472}
6473
6474/*
6475 * Decode CLOSE response
6476 */
6477static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6478 struct nfs_closeres *res)
6479{
6480 struct compound_hdr hdr;
6481 int status;
6482
6483 status = decode_compound_hdr(xdr, &hdr);
6484 if (status)
6485 goto out;
6486 status = decode_sequence(xdr, &res->seq_res, rqstp);
6487 if (status)
6488 goto out;
6489 status = decode_putfh(xdr);
6490 if (status)
6491 goto out;
6492 if (res->lr_res) {
6493 status = decode_layoutreturn(xdr, res->lr_res);
6494 res->lr_ret = status;
6495 if (status)
6496 goto out;
6497 }
6498 if (res->fattr != NULL) {
6499 status = decode_getfattr(xdr, res->fattr, res->server);
6500 if (status != 0)
6501 goto out;
6502 }
6503 status = decode_close(xdr, res);
6504out:
6505 return status;
6506}
6507
6508/*
6509 * Decode OPEN response
6510 */
6511static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6512 struct nfs_openres *res)
6513{
6514 struct compound_hdr hdr;
6515 int status;
6516
6517 status = decode_compound_hdr(xdr, &hdr);
6518 if (status)
6519 goto out;
6520 status = decode_sequence(xdr, &res->seq_res, rqstp);
6521 if (status)
6522 goto out;
6523 status = decode_putfh(xdr);
6524 if (status)
6525 goto out;
6526 status = decode_open(xdr, res);
6527 if (status)
6528 goto out;
6529 status = decode_getfh(xdr, &res->fh);
6530 if (status)
6531 goto out;
6532 if (res->access_request)
6533 decode_access(xdr, &res->access_supported, &res->access_result);
6534 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6535out:
6536 return status;
6537}
6538
6539/*
6540 * Decode OPEN_CONFIRM response
6541 */
6542static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6543 struct xdr_stream *xdr,
6544 struct nfs_open_confirmres *res)
6545{
6546 struct compound_hdr hdr;
6547 int status;
6548
6549 status = decode_compound_hdr(xdr, &hdr);
6550 if (status)
6551 goto out;
6552 status = decode_putfh(xdr);
6553 if (status)
6554 goto out;
6555 status = decode_open_confirm(xdr, res);
6556out:
6557 return status;
6558}
6559
6560/*
6561 * Decode OPEN response
6562 */
6563static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6564 struct xdr_stream *xdr,
6565 struct nfs_openres *res)
6566{
6567 struct compound_hdr hdr;
6568 int status;
6569
6570 status = decode_compound_hdr(xdr, &hdr);
6571 if (status)
6572 goto out;
6573 status = decode_sequence(xdr, &res->seq_res, rqstp);
6574 if (status)
6575 goto out;
6576 status = decode_putfh(xdr);
6577 if (status)
6578 goto out;
6579 status = decode_open(xdr, res);
6580 if (status)
6581 goto out;
6582 if (res->access_request)
6583 decode_access(xdr, &res->access_supported, &res->access_result);
6584 decode_getfattr(xdr, res->f_attr, res->server);
6585out:
6586 return status;
6587}
6588
6589/*
6590 * Decode SETATTR response
6591 */
6592static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6593 struct xdr_stream *xdr,
6594 struct nfs_setattrres *res)
6595{
6596 struct compound_hdr hdr;
6597 int status;
6598
6599 status = decode_compound_hdr(xdr, &hdr);
6600 if (status)
6601 goto out;
6602 status = decode_sequence(xdr, &res->seq_res, rqstp);
6603 if (status)
6604 goto out;
6605 status = decode_putfh(xdr);
6606 if (status)
6607 goto out;
6608 status = decode_setattr(xdr);
6609 if (status)
6610 goto out;
6611 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6612out:
6613 return status;
6614}
6615
6616/*
6617 * Decode LOCK response
6618 */
6619static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6620 struct nfs_lock_res *res)
6621{
6622 struct compound_hdr hdr;
6623 int status;
6624
6625 status = decode_compound_hdr(xdr, &hdr);
6626 if (status)
6627 goto out;
6628 status = decode_sequence(xdr, &res->seq_res, rqstp);
6629 if (status)
6630 goto out;
6631 status = decode_putfh(xdr);
6632 if (status)
6633 goto out;
6634 status = decode_lock(xdr, res);
6635out:
6636 return status;
6637}
6638
6639/*
6640 * Decode LOCKT response
6641 */
6642static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6643 struct nfs_lockt_res *res)
6644{
6645 struct compound_hdr hdr;
6646 int status;
6647
6648 status = decode_compound_hdr(xdr, &hdr);
6649 if (status)
6650 goto out;
6651 status = decode_sequence(xdr, &res->seq_res, rqstp);
6652 if (status)
6653 goto out;
6654 status = decode_putfh(xdr);
6655 if (status)
6656 goto out;
6657 status = decode_lockt(xdr, res);
6658out:
6659 return status;
6660}
6661
6662/*
6663 * Decode LOCKU response
6664 */
6665static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6666 struct nfs_locku_res *res)
6667{
6668 struct compound_hdr hdr;
6669 int status;
6670
6671 status = decode_compound_hdr(xdr, &hdr);
6672 if (status)
6673 goto out;
6674 status = decode_sequence(xdr, &res->seq_res, rqstp);
6675 if (status)
6676 goto out;
6677 status = decode_putfh(xdr);
6678 if (status)
6679 goto out;
6680 status = decode_locku(xdr, res);
6681out:
6682 return status;
6683}
6684
6685static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6686 struct xdr_stream *xdr, void *dummy)
6687{
6688 struct compound_hdr hdr;
6689 int status;
6690
6691 status = decode_compound_hdr(xdr, &hdr);
6692 if (!status)
6693 status = decode_release_lockowner(xdr);
6694 return status;
6695}
6696
6697/*
6698 * Decode READLINK response
6699 */
6700static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6701 struct xdr_stream *xdr,
6702 struct nfs4_readlink_res *res)
6703{
6704 struct compound_hdr hdr;
6705 int status;
6706
6707 status = decode_compound_hdr(xdr, &hdr);
6708 if (status)
6709 goto out;
6710 status = decode_sequence(xdr, &res->seq_res, rqstp);
6711 if (status)
6712 goto out;
6713 status = decode_putfh(xdr);
6714 if (status)
6715 goto out;
6716 status = decode_readlink(xdr, rqstp);
6717out:
6718 return status;
6719}
6720
6721/*
6722 * Decode READDIR response
6723 */
6724static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6725 struct nfs4_readdir_res *res)
6726{
6727 struct compound_hdr hdr;
6728 int status;
6729
6730 status = decode_compound_hdr(xdr, &hdr);
6731 if (status)
6732 goto out;
6733 status = decode_sequence(xdr, &res->seq_res, rqstp);
6734 if (status)
6735 goto out;
6736 status = decode_putfh(xdr);
6737 if (status)
6738 goto out;
6739 status = decode_readdir(xdr, rqstp, res);
6740out:
6741 return status;
6742}
6743
6744/*
6745 * Decode Read response
6746 */
6747static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6748 struct nfs_pgio_res *res)
6749{
6750 struct compound_hdr hdr;
6751 int status;
6752
6753 status = decode_compound_hdr(xdr, &hdr);
6754 res->op_status = hdr.status;
6755 if (status)
6756 goto out;
6757 status = decode_sequence(xdr, &res->seq_res, rqstp);
6758 if (status)
6759 goto out;
6760 status = decode_putfh(xdr);
6761 if (status)
6762 goto out;
6763 status = decode_read(xdr, rqstp, res);
6764 if (!status)
6765 status = res->count;
6766out:
6767 return status;
6768}
6769
6770/*
6771 * Decode WRITE response
6772 */
6773static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6774 struct nfs_pgio_res *res)
6775{
6776 struct compound_hdr hdr;
6777 int status;
6778
6779 status = decode_compound_hdr(xdr, &hdr);
6780 res->op_status = hdr.status;
6781 if (status)
6782 goto out;
6783 status = decode_sequence(xdr, &res->seq_res, rqstp);
6784 if (status)
6785 goto out;
6786 status = decode_putfh(xdr);
6787 if (status)
6788 goto out;
6789 status = decode_write(xdr, res);
6790 if (status)
6791 goto out;
6792 if (res->fattr)
6793 decode_getfattr(xdr, res->fattr, res->server);
6794 if (!status)
6795 status = res->count;
6796out:
6797 return status;
6798}
6799
6800/*
6801 * Decode COMMIT response
6802 */
6803static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6804 struct nfs_commitres *res)
6805{
6806 struct compound_hdr hdr;
6807 int status;
6808
6809 status = decode_compound_hdr(xdr, &hdr);
6810 res->op_status = hdr.status;
6811 if (status)
6812 goto out;
6813 status = decode_sequence(xdr, &res->seq_res, rqstp);
6814 if (status)
6815 goto out;
6816 status = decode_putfh(xdr);
6817 if (status)
6818 goto out;
6819 status = decode_commit(xdr, res);
6820out:
6821 return status;
6822}
6823
6824/*
6825 * Decode FSINFO response
6826 */
6827static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6828 struct nfs4_fsinfo_res *res)
6829{
6830 struct compound_hdr hdr;
6831 int status;
6832
6833 status = decode_compound_hdr(xdr, &hdr);
6834 if (!status)
6835 status = decode_sequence(xdr, &res->seq_res, req);
6836 if (!status)
6837 status = decode_putfh(xdr);
6838 if (!status)
6839 status = decode_fsinfo(xdr, res->fsinfo);
6840 return status;
6841}
6842
6843/*
6844 * Decode PATHCONF response
6845 */
6846static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6847 struct nfs4_pathconf_res *res)
6848{
6849 struct compound_hdr hdr;
6850 int status;
6851
6852 status = decode_compound_hdr(xdr, &hdr);
6853 if (!status)
6854 status = decode_sequence(xdr, &res->seq_res, req);
6855 if (!status)
6856 status = decode_putfh(xdr);
6857 if (!status)
6858 status = decode_pathconf(xdr, res->pathconf);
6859 return status;
6860}
6861
6862/*
6863 * Decode STATFS response
6864 */
6865static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6866 struct nfs4_statfs_res *res)
6867{
6868 struct compound_hdr hdr;
6869 int status;
6870
6871 status = decode_compound_hdr(xdr, &hdr);
6872 if (!status)
6873 status = decode_sequence(xdr, &res->seq_res, req);
6874 if (!status)
6875 status = decode_putfh(xdr);
6876 if (!status)
6877 status = decode_statfs(xdr, res->fsstat);
6878 return status;
6879}
6880
6881/*
6882 * Decode GETATTR_BITMAP response
6883 */
6884static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6885 struct xdr_stream *xdr,
6886 struct nfs4_server_caps_res *res)
6887{
6888 struct compound_hdr hdr;
6889 int status;
6890
6891 status = decode_compound_hdr(xdr, &hdr);
6892 if (status)
6893 goto out;
6894 status = decode_sequence(xdr, &res->seq_res, req);
6895 if (status)
6896 goto out;
6897 status = decode_putfh(xdr);
6898 if (status)
6899 goto out;
6900 status = decode_server_caps(xdr, res);
6901out:
6902 return status;
6903}
6904
6905/*
6906 * Decode RENEW response
6907 */
6908static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6909 void *__unused)
6910{
6911 struct compound_hdr hdr;
6912 int status;
6913
6914 status = decode_compound_hdr(xdr, &hdr);
6915 if (!status)
6916 status = decode_renew(xdr);
6917 return status;
6918}
6919
6920/*
6921 * Decode SETCLIENTID response
6922 */
6923static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6924 struct xdr_stream *xdr,
6925 struct nfs4_setclientid_res *res)
6926{
6927 struct compound_hdr hdr;
6928 int status;
6929
6930 status = decode_compound_hdr(xdr, &hdr);
6931 if (!status)
6932 status = decode_setclientid(xdr, res);
6933 return status;
6934}
6935
6936/*
6937 * Decode SETCLIENTID_CONFIRM response
6938 */
6939static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6940 struct xdr_stream *xdr)
6941{
6942 struct compound_hdr hdr;
6943 int status;
6944
6945 status = decode_compound_hdr(xdr, &hdr);
6946 if (!status)
6947 status = decode_setclientid_confirm(xdr);
6948 return status;
6949}
6950
6951/*
6952 * Decode DELEGRETURN response
6953 */
6954static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6955 struct xdr_stream *xdr,
6956 struct nfs4_delegreturnres *res)
6957{
6958 struct compound_hdr hdr;
6959 int status;
6960
6961 status = decode_compound_hdr(xdr, &hdr);
6962 if (status)
6963 goto out;
6964 status = decode_sequence(xdr, &res->seq_res, rqstp);
6965 if (status)
6966 goto out;
6967 status = decode_putfh(xdr);
6968 if (status != 0)
6969 goto out;
6970 if (res->lr_res) {
6971 status = decode_layoutreturn(xdr, res->lr_res);
6972 res->lr_ret = status;
6973 if (status)
6974 goto out;
6975 }
6976 if (res->fattr) {
6977 status = decode_getfattr(xdr, res->fattr, res->server);
6978 if (status != 0)
6979 goto out;
6980 }
6981 status = decode_delegreturn(xdr);
6982out:
6983 return status;
6984}
6985
6986/*
6987 * Decode FS_LOCATIONS response
6988 */
6989static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6990 struct xdr_stream *xdr,
6991 struct nfs4_fs_locations_res *res)
6992{
6993 struct compound_hdr hdr;
6994 int status;
6995
6996 status = decode_compound_hdr(xdr, &hdr);
6997 if (status)
6998 goto out;
6999 status = decode_sequence(xdr, &res->seq_res, req);
7000 if (status)
7001 goto out;
7002 status = decode_putfh(xdr);
7003 if (status)
7004 goto out;
7005 if (res->migration) {
7006 xdr_enter_page(xdr, PAGE_SIZE);
7007 status = decode_getfattr_generic(xdr,
7008 &res->fs_locations->fattr,
7009 NULL, res->fs_locations,
7010 NULL, res->fs_locations->server);
7011 if (status)
7012 goto out;
7013 if (res->renew)
7014 status = decode_renew(xdr);
7015 } else {
7016 status = decode_lookup(xdr);
7017 if (status)
7018 goto out;
7019 xdr_enter_page(xdr, PAGE_SIZE);
7020 status = decode_getfattr_generic(xdr,
7021 &res->fs_locations->fattr,
7022 NULL, res->fs_locations,
7023 NULL, res->fs_locations->server);
7024 }
7025out:
7026 return status;
7027}
7028
7029/*
7030 * Decode SECINFO response
7031 */
7032static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7033 struct xdr_stream *xdr,
7034 struct nfs4_secinfo_res *res)
7035{
7036 struct compound_hdr hdr;
7037 int status;
7038
7039 status = decode_compound_hdr(xdr, &hdr);
7040 if (status)
7041 goto out;
7042 status = decode_sequence(xdr, &res->seq_res, rqstp);
7043 if (status)
7044 goto out;
7045 status = decode_putfh(xdr);
7046 if (status)
7047 goto out;
7048 status = decode_secinfo(xdr, res);
7049out:
7050 return status;
7051}
7052
7053/*
7054 * Decode FSID_PRESENT response
7055 */
7056static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7057 struct xdr_stream *xdr,
7058 struct nfs4_fsid_present_res *res)
7059{
7060 struct compound_hdr hdr;
7061 int status;
7062
7063 status = decode_compound_hdr(xdr, &hdr);
7064 if (status)
7065 goto out;
7066 status = decode_sequence(xdr, &res->seq_res, rqstp);
7067 if (status)
7068 goto out;
7069 status = decode_putfh(xdr);
7070 if (status)
7071 goto out;
7072 status = decode_getfh(xdr, res->fh);
7073 if (status)
7074 goto out;
7075 if (res->renew)
7076 status = decode_renew(xdr);
7077out:
7078 return status;
7079}
7080
7081#if defined(CONFIG_NFS_V4_1)
7082/*
7083 * Decode BIND_CONN_TO_SESSION response
7084 */
7085static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7086 struct xdr_stream *xdr,
7087 void *res)
7088{
7089 struct compound_hdr hdr;
7090 int status;
7091
7092 status = decode_compound_hdr(xdr, &hdr);
7093 if (!status)
7094 status = decode_bind_conn_to_session(xdr, res);
7095 return status;
7096}
7097
7098/*
7099 * Decode EXCHANGE_ID response
7100 */
7101static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7102 struct xdr_stream *xdr,
7103 void *res)
7104{
7105 struct compound_hdr hdr;
7106 int status;
7107
7108 status = decode_compound_hdr(xdr, &hdr);
7109 if (!status)
7110 status = decode_exchange_id(xdr, res);
7111 return status;
7112}
7113
7114/*
7115 * Decode CREATE_SESSION response
7116 */
7117static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7118 struct xdr_stream *xdr,
7119 struct nfs41_create_session_res *res)
7120{
7121 struct compound_hdr hdr;
7122 int status;
7123
7124 status = decode_compound_hdr(xdr, &hdr);
7125 if (!status)
7126 status = decode_create_session(xdr, res);
7127 return status;
7128}
7129
7130/*
7131 * Decode DESTROY_SESSION response
7132 */
7133static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7134 struct xdr_stream *xdr,
7135 void *res)
7136{
7137 struct compound_hdr hdr;
7138 int status;
7139
7140 status = decode_compound_hdr(xdr, &hdr);
7141 if (!status)
7142 status = decode_destroy_session(xdr, res);
7143 return status;
7144}
7145
7146/*
7147 * Decode DESTROY_CLIENTID response
7148 */
7149static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7150 struct xdr_stream *xdr,
7151 void *res)
7152{
7153 struct compound_hdr hdr;
7154 int status;
7155
7156 status = decode_compound_hdr(xdr, &hdr);
7157 if (!status)
7158 status = decode_destroy_clientid(xdr, res);
7159 return status;
7160}
7161
7162/*
7163 * Decode SEQUENCE response
7164 */
7165static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7166 struct xdr_stream *xdr,
7167 struct nfs4_sequence_res *res)
7168{
7169 struct compound_hdr hdr;
7170 int status;
7171
7172 status = decode_compound_hdr(xdr, &hdr);
7173 if (!status)
7174 status = decode_sequence(xdr, res, rqstp);
7175 return status;
7176}
7177
7178/*
7179 * Decode GET_LEASE_TIME response
7180 */
7181static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7182 struct xdr_stream *xdr,
7183 struct nfs4_get_lease_time_res *res)
7184{
7185 struct compound_hdr hdr;
7186 int status;
7187
7188 status = decode_compound_hdr(xdr, &hdr);
7189 if (!status)
7190 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7191 if (!status)
7192 status = decode_putrootfh(xdr);
7193 if (!status)
7194 status = decode_fsinfo(xdr, res->lr_fsinfo);
7195 return status;
7196}
7197
7198/*
7199 * Decode RECLAIM_COMPLETE response
7200 */
7201static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7202 struct xdr_stream *xdr,
7203 struct nfs41_reclaim_complete_res *res)
7204{
7205 struct compound_hdr hdr;
7206 int status;
7207
7208 status = decode_compound_hdr(xdr, &hdr);
7209 if (!status)
7210 status = decode_sequence(xdr, &res->seq_res, rqstp);
7211 if (!status)
7212 status = decode_reclaim_complete(xdr, NULL);
7213 return status;
7214}
7215
7216/*
7217 * Decode GETDEVINFO response
7218 */
7219static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7220 struct xdr_stream *xdr,
7221 struct nfs4_getdeviceinfo_res *res)
7222{
7223 struct compound_hdr hdr;
7224 int status;
7225
7226 status = decode_compound_hdr(xdr, &hdr);
7227 if (status != 0)
7228 goto out;
7229 status = decode_sequence(xdr, &res->seq_res, rqstp);
7230 if (status != 0)
7231 goto out;
7232 status = decode_getdeviceinfo(xdr, res);
7233out:
7234 return status;
7235}
7236
7237/*
7238 * Decode LAYOUTGET response
7239 */
7240static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7241 struct xdr_stream *xdr,
7242 struct nfs4_layoutget_res *res)
7243{
7244 struct compound_hdr hdr;
7245 int status;
7246
7247 status = decode_compound_hdr(xdr, &hdr);
7248 if (status)
7249 goto out;
7250 status = decode_sequence(xdr, &res->seq_res, rqstp);
7251 if (status)
7252 goto out;
7253 status = decode_putfh(xdr);
7254 if (status)
7255 goto out;
7256 status = decode_layoutget(xdr, rqstp, res);
7257out:
7258 return status;
7259}
7260
7261/*
7262 * Decode LAYOUTRETURN response
7263 */
7264static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7265 struct xdr_stream *xdr,
7266 struct nfs4_layoutreturn_res *res)
7267{
7268 struct compound_hdr hdr;
7269 int status;
7270
7271 status = decode_compound_hdr(xdr, &hdr);
7272 if (status)
7273 goto out;
7274 status = decode_sequence(xdr, &res->seq_res, rqstp);
7275 if (status)
7276 goto out;
7277 status = decode_putfh(xdr);
7278 if (status)
7279 goto out;
7280 status = decode_layoutreturn(xdr, res);
7281out:
7282 return status;
7283}
7284
7285/*
7286 * Decode LAYOUTCOMMIT response
7287 */
7288static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7289 struct xdr_stream *xdr,
7290 struct nfs4_layoutcommit_res *res)
7291{
7292 struct compound_hdr hdr;
7293 int status;
7294
7295 status = decode_compound_hdr(xdr, &hdr);
7296 if (status)
7297 goto out;
7298 status = decode_sequence(xdr, &res->seq_res, rqstp);
7299 if (status)
7300 goto out;
7301 status = decode_putfh(xdr);
7302 if (status)
7303 goto out;
7304 status = decode_layoutcommit(xdr, rqstp, res);
7305 if (status)
7306 goto out;
7307 decode_getfattr(xdr, res->fattr, res->server);
7308out:
7309 return status;
7310}
7311
7312/*
7313 * Decode SECINFO_NO_NAME response
7314 */
7315static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7316 struct xdr_stream *xdr,
7317 struct nfs4_secinfo_res *res)
7318{
7319 struct compound_hdr hdr;
7320 int status;
7321
7322 status = decode_compound_hdr(xdr, &hdr);
7323 if (status)
7324 goto out;
7325 status = decode_sequence(xdr, &res->seq_res, rqstp);
7326 if (status)
7327 goto out;
7328 status = decode_putrootfh(xdr);
7329 if (status)
7330 goto out;
7331 status = decode_secinfo_no_name(xdr, res);
7332out:
7333 return status;
7334}
7335
7336/*
7337 * Decode TEST_STATEID response
7338 */
7339static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7340 struct xdr_stream *xdr,
7341 struct nfs41_test_stateid_res *res)
7342{
7343 struct compound_hdr hdr;
7344 int status;
7345
7346 status = decode_compound_hdr(xdr, &hdr);
7347 if (status)
7348 goto out;
7349 status = decode_sequence(xdr, &res->seq_res, rqstp);
7350 if (status)
7351 goto out;
7352 status = decode_test_stateid(xdr, res);
7353out:
7354 return status;
7355}
7356
7357/*
7358 * Decode FREE_STATEID response
7359 */
7360static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7361 struct xdr_stream *xdr,
7362 struct nfs41_free_stateid_res *res)
7363{
7364 struct compound_hdr hdr;
7365 int status;
7366
7367 status = decode_compound_hdr(xdr, &hdr);
7368 if (status)
7369 goto out;
7370 status = decode_sequence(xdr, &res->seq_res, rqstp);
7371 if (status)
7372 goto out;
7373 status = decode_free_stateid(xdr, res);
7374out:
7375 return status;
7376}
7377#endif /* CONFIG_NFS_V4_1 */
7378
7379/**
7380 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7381 * the local page cache.
7382 * @xdr: XDR stream where entry resides
7383 * @entry: buffer to fill in with entry data
7384 * @plus: boolean indicating whether this should be a readdirplus entry
7385 *
7386 * Returns zero if successful, otherwise a negative errno value is
7387 * returned.
7388 *
7389 * This function is not invoked during READDIR reply decoding, but
7390 * rather whenever an application invokes the getdents(2) system call
7391 * on a directory already in our cache.
7392 */
7393int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7394 int plus)
7395{
7396 unsigned int savep;
7397 uint32_t bitmap[3] = {0};
7398 uint32_t len;
7399 __be32 *p = xdr_inline_decode(xdr, 4);
7400 if (unlikely(!p))
7401 goto out_overflow;
7402 if (*p == xdr_zero) {
7403 p = xdr_inline_decode(xdr, 4);
7404 if (unlikely(!p))
7405 goto out_overflow;
7406 if (*p == xdr_zero)
7407 return -EAGAIN;
7408 entry->eof = 1;
7409 return -EBADCOOKIE;
7410 }
7411
7412 p = xdr_inline_decode(xdr, 12);
7413 if (unlikely(!p))
7414 goto out_overflow;
7415 entry->prev_cookie = entry->cookie;
7416 p = xdr_decode_hyper(p, &entry->cookie);
7417 entry->len = be32_to_cpup(p);
7418
7419 p = xdr_inline_decode(xdr, entry->len);
7420 if (unlikely(!p))
7421 goto out_overflow;
7422 entry->name = (const char *) p;
7423
7424 /*
7425 * In case the server doesn't return an inode number,
7426 * we fake one here. (We don't use inode number 0,
7427 * since glibc seems to choke on it...)
7428 */
7429 entry->ino = 1;
7430 entry->fattr->valid = 0;
7431
7432 if (decode_attr_bitmap(xdr, bitmap) < 0)
7433 goto out_overflow;
7434
7435 if (decode_attr_length(xdr, &len, &savep) < 0)
7436 goto out_overflow;
7437
7438 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7439 NULL, entry->label, entry->server) < 0)
7440 goto out_overflow;
7441 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7442 entry->ino = entry->fattr->mounted_on_fileid;
7443 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7444 entry->ino = entry->fattr->fileid;
7445
7446 entry->d_type = DT_UNKNOWN;
7447 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7448 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7449
7450 return 0;
7451
7452out_overflow:
7453 print_overflow_msg(__func__, xdr);
7454 return -EAGAIN;
7455}
7456
7457/*
7458 * We need to translate between nfs status return values and
7459 * the local errno values which may not be the same.
7460 */
7461static struct {
7462 int stat;
7463 int errno;
7464} nfs_errtbl[] = {
7465 { NFS4_OK, 0 },
7466 { NFS4ERR_PERM, -EPERM },
7467 { NFS4ERR_NOENT, -ENOENT },
7468 { NFS4ERR_IO, -errno_NFSERR_IO},
7469 { NFS4ERR_NXIO, -ENXIO },
7470 { NFS4ERR_ACCESS, -EACCES },
7471 { NFS4ERR_EXIST, -EEXIST },
7472 { NFS4ERR_XDEV, -EXDEV },
7473 { NFS4ERR_NOTDIR, -ENOTDIR },
7474 { NFS4ERR_ISDIR, -EISDIR },
7475 { NFS4ERR_INVAL, -EINVAL },
7476 { NFS4ERR_FBIG, -EFBIG },
7477 { NFS4ERR_NOSPC, -ENOSPC },
7478 { NFS4ERR_ROFS, -EROFS },
7479 { NFS4ERR_MLINK, -EMLINK },
7480 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7481 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7482 { NFS4ERR_DQUOT, -EDQUOT },
7483 { NFS4ERR_STALE, -ESTALE },
7484 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7485 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7486 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7487 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7488 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7489 { NFS4ERR_BADTYPE, -EBADTYPE },
7490 { NFS4ERR_LOCKED, -EAGAIN },
7491 { NFS4ERR_SYMLINK, -ELOOP },
7492 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7493 { NFS4ERR_DEADLOCK, -EDEADLK },
7494 { -1, -EIO }
7495};
7496
7497/*
7498 * Convert an NFS error code to a local one.
7499 * This one is used jointly by NFSv2 and NFSv3.
7500 */
7501static int
7502nfs4_stat_to_errno(int stat)
7503{
7504 int i;
7505 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7506 if (nfs_errtbl[i].stat == stat)
7507 return nfs_errtbl[i].errno;
7508 }
7509 if (stat <= 10000 || stat > 10100) {
7510 /* The server is looney tunes. */
7511 return -EREMOTEIO;
7512 }
7513 /* If we cannot translate the error, the recovery routines should
7514 * handle it.
7515 * Note: remaining NFSv4 error codes have values > 10000, so should
7516 * not conflict with native Linux error codes.
7517 */
7518 return -stat;
7519}
7520
7521#ifdef CONFIG_NFS_V4_2
7522#include "nfs42xdr.c"
7523#endif /* CONFIG_NFS_V4_2 */
7524
7525#define PROC(proc, argtype, restype) \
7526[NFSPROC4_CLNT_##proc] = { \
7527 .p_proc = NFSPROC4_COMPOUND, \
7528 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7529 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7530 .p_arglen = NFS4_##argtype##_sz, \
7531 .p_replen = NFS4_##restype##_sz, \
7532 .p_statidx = NFSPROC4_CLNT_##proc, \
7533 .p_name = #proc, \
7534}
7535
7536#define STUB(proc) \
7537[NFSPROC4_CLNT_##proc] = { \
7538 .p_name = #proc, \
7539}
7540
7541struct rpc_procinfo nfs4_procedures[] = {
7542 PROC(READ, enc_read, dec_read),
7543 PROC(WRITE, enc_write, dec_write),
7544 PROC(COMMIT, enc_commit, dec_commit),
7545 PROC(OPEN, enc_open, dec_open),
7546 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7547 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7548 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7549 PROC(CLOSE, enc_close, dec_close),
7550 PROC(SETATTR, enc_setattr, dec_setattr),
7551 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7552 PROC(RENEW, enc_renew, dec_renew),
7553 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7554 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7555 PROC(LOCK, enc_lock, dec_lock),
7556 PROC(LOCKT, enc_lockt, dec_lockt),
7557 PROC(LOCKU, enc_locku, dec_locku),
7558 PROC(ACCESS, enc_access, dec_access),
7559 PROC(GETATTR, enc_getattr, dec_getattr),
7560 PROC(LOOKUP, enc_lookup, dec_lookup),
7561 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7562 PROC(REMOVE, enc_remove, dec_remove),
7563 PROC(RENAME, enc_rename, dec_rename),
7564 PROC(LINK, enc_link, dec_link),
7565 PROC(SYMLINK, enc_symlink, dec_symlink),
7566 PROC(CREATE, enc_create, dec_create),
7567 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7568 PROC(STATFS, enc_statfs, dec_statfs),
7569 PROC(READLINK, enc_readlink, dec_readlink),
7570 PROC(READDIR, enc_readdir, dec_readdir),
7571 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7572 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7573 PROC(GETACL, enc_getacl, dec_getacl),
7574 PROC(SETACL, enc_setacl, dec_setacl),
7575 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7576 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7577 PROC(SECINFO, enc_secinfo, dec_secinfo),
7578 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7579#if defined(CONFIG_NFS_V4_1)
7580 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7581 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7582 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7583 PROC(SEQUENCE, enc_sequence, dec_sequence),
7584 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7585 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7586 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7587 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7588 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7589 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7590 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7591 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7592 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7593 STUB(GETDEVICELIST),
7594 PROC(BIND_CONN_TO_SESSION,
7595 enc_bind_conn_to_session, dec_bind_conn_to_session),
7596 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7597#endif /* CONFIG_NFS_V4_1 */
7598#ifdef CONFIG_NFS_V4_2
7599 PROC(SEEK, enc_seek, dec_seek),
7600 PROC(ALLOCATE, enc_allocate, dec_allocate),
7601 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
7602 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7603 PROC(CLONE, enc_clone, dec_clone),
7604 PROC(COPY, enc_copy, dec_copy),
7605#endif /* CONFIG_NFS_V4_2 */
7606};
7607
7608const struct rpc_version nfs_version4 = {
7609 .number = 4,
7610 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7611 .procs = nfs4_procedures
7612};
7613
7614/*
7615 * Local variables:
7616 * c-basic-offset: 8
7617 * End:
7618 */