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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/nfs_idmap.h>
56
57#include "nfs4_fs.h"
58#include "internal.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 nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105#ifdef CONFIG_NFS_V4_SECURITY_LABEL
106/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
108#else
109#define nfs4_label_maxsz 0
110#endif
111/* We support only one layout type per file system */
112#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
113/* This is based on getfattr, which uses the most attributes: */
114#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
115 3 + 3 + 3 + nfs4_owner_maxsz + \
116 nfs4_group_maxsz + nfs4_label_maxsz + \
117 decode_mdsthreshold_maxsz))
118#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
119 nfs4_fattr_value_maxsz)
120#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
121#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
122 1 + 2 + 1 + \
123 nfs4_owner_maxsz + \
124 nfs4_group_maxsz + \
125 nfs4_label_maxsz + \
126 4 + 4)
127#define encode_savefh_maxsz (op_encode_hdr_maxsz)
128#define decode_savefh_maxsz (op_decode_hdr_maxsz)
129#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
130#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
131#define encode_fsinfo_maxsz (encode_getattr_maxsz)
132/* The 5 accounts for the PNFS attributes, and assumes that at most three
133 * layout types will be returned.
134 */
135#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
136 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
137#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
138#define decode_renew_maxsz (op_decode_hdr_maxsz)
139#define encode_setclientid_maxsz \
140 (op_encode_hdr_maxsz + \
141 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
142 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
143 1 /* sc_prog */ + \
144 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
145 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
146 1) /* sc_cb_ident */
147#define decode_setclientid_maxsz \
148 (op_decode_hdr_maxsz + \
149 2 + \
150 1024) /* large value for CLID_INUSE */
151#define encode_setclientid_confirm_maxsz \
152 (op_encode_hdr_maxsz + \
153 3 + (NFS4_VERIFIER_SIZE >> 2))
154#define decode_setclientid_confirm_maxsz \
155 (op_decode_hdr_maxsz)
156#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
157#define decode_lookup_maxsz (op_decode_hdr_maxsz)
158#define encode_share_access_maxsz \
159 (2)
160#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
161#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
162#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
163#define encode_open_maxsz (op_encode_hdr_maxsz + \
164 2 + encode_share_access_maxsz + 2 + \
165 open_owner_id_maxsz + \
166 encode_opentype_maxsz + \
167 encode_claim_null_maxsz)
168#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
169#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
170 decode_ace_maxsz)
171#define decode_change_info_maxsz (5)
172#define decode_open_maxsz (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz + \
174 decode_change_info_maxsz + 1 + \
175 nfs4_fattr_bitmap_maxsz + \
176 decode_delegation_maxsz)
177#define encode_open_confirm_maxsz \
178 (op_encode_hdr_maxsz + \
179 encode_stateid_maxsz + 1)
180#define decode_open_confirm_maxsz \
181 (op_decode_hdr_maxsz + \
182 decode_stateid_maxsz)
183#define encode_open_downgrade_maxsz \
184 (op_encode_hdr_maxsz + \
185 encode_stateid_maxsz + 1 + \
186 encode_share_access_maxsz)
187#define decode_open_downgrade_maxsz \
188 (op_decode_hdr_maxsz + \
189 decode_stateid_maxsz)
190#define encode_close_maxsz (op_encode_hdr_maxsz + \
191 1 + encode_stateid_maxsz)
192#define decode_close_maxsz (op_decode_hdr_maxsz + \
193 decode_stateid_maxsz)
194#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
195 encode_stateid_maxsz + \
196 encode_attrs_maxsz)
197#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
198 nfs4_fattr_bitmap_maxsz)
199#define encode_read_maxsz (op_encode_hdr_maxsz + \
200 encode_stateid_maxsz + 3)
201#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
202#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
203 2 + encode_verifier_maxsz + 5 + \
204 nfs4_label_maxsz)
205#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
206 decode_verifier_maxsz)
207#define encode_readlink_maxsz (op_encode_hdr_maxsz)
208#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
209#define encode_write_maxsz (op_encode_hdr_maxsz + \
210 encode_stateid_maxsz + 4)
211#define decode_write_maxsz (op_decode_hdr_maxsz + \
212 2 + decode_verifier_maxsz)
213#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
214#define decode_commit_maxsz (op_decode_hdr_maxsz + \
215 decode_verifier_maxsz)
216#define encode_remove_maxsz (op_encode_hdr_maxsz + \
217 nfs4_name_maxsz)
218#define decode_remove_maxsz (op_decode_hdr_maxsz + \
219 decode_change_info_maxsz)
220#define encode_rename_maxsz (op_encode_hdr_maxsz + \
221 2 * nfs4_name_maxsz)
222#define decode_rename_maxsz (op_decode_hdr_maxsz + \
223 decode_change_info_maxsz + \
224 decode_change_info_maxsz)
225#define encode_link_maxsz (op_encode_hdr_maxsz + \
226 nfs4_name_maxsz)
227#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
228#define encode_lockowner_maxsz (7)
229#define encode_lock_maxsz (op_encode_hdr_maxsz + \
230 7 + \
231 1 + encode_stateid_maxsz + 1 + \
232 encode_lockowner_maxsz)
233#define decode_lock_denied_maxsz \
234 (8 + decode_lockowner_maxsz)
235#define decode_lock_maxsz (op_decode_hdr_maxsz + \
236 decode_lock_denied_maxsz)
237#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
238 encode_lockowner_maxsz)
239#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
240 decode_lock_denied_maxsz)
241#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
242 encode_stateid_maxsz + \
243 4)
244#define decode_locku_maxsz (op_decode_hdr_maxsz + \
245 decode_stateid_maxsz)
246#define encode_release_lockowner_maxsz \
247 (op_encode_hdr_maxsz + \
248 encode_lockowner_maxsz)
249#define decode_release_lockowner_maxsz \
250 (op_decode_hdr_maxsz)
251#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
252#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
253#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
254 1 + nfs4_name_maxsz + \
255 1 + \
256 nfs4_fattr_maxsz)
257#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
258#define encode_create_maxsz (op_encode_hdr_maxsz + \
259 1 + 2 + nfs4_name_maxsz + \
260 encode_attrs_maxsz)
261#define decode_create_maxsz (op_decode_hdr_maxsz + \
262 decode_change_info_maxsz + \
263 nfs4_fattr_bitmap_maxsz)
264#define encode_statfs_maxsz (encode_getattr_maxsz)
265#define decode_statfs_maxsz (decode_getattr_maxsz)
266#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
267#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
268#define encode_getacl_maxsz (encode_getattr_maxsz)
269#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
270 nfs4_fattr_bitmap_maxsz + 1)
271#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
272 encode_stateid_maxsz + 3)
273#define decode_setacl_maxsz (decode_setattr_maxsz)
274#define encode_fs_locations_maxsz \
275 (encode_getattr_maxsz)
276#define decode_fs_locations_maxsz \
277 (0)
278#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
279#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
280
281#if defined(CONFIG_NFS_V4_1)
282#define NFS4_MAX_MACHINE_NAME_LEN (64)
283#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
284 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
285
286#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
287 encode_verifier_maxsz + \
288 1 /* co_ownerid.len */ + \
289 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
290 1 /* flags */ + \
291 1 /* spa_how */ + \
292 /* max is SP4_MACH_CRED (for now) */ + \
293 1 + NFS4_OP_MAP_NUM_WORDS + \
294 1 + NFS4_OP_MAP_NUM_WORDS + \
295 1 /* implementation id array of size 1 */ + \
296 1 /* nii_domain */ + \
297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
298 1 /* nii_name */ + \
299 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
300 3 /* nii_date */)
301#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
302 2 /* eir_clientid */ + \
303 1 /* eir_sequenceid */ + \
304 1 /* eir_flags */ + \
305 1 /* spr_how */ + \
306 /* max is SP4_MACH_CRED (for now) */ + \
307 1 + NFS4_OP_MAP_NUM_WORDS + \
308 1 + NFS4_OP_MAP_NUM_WORDS + \
309 2 /* eir_server_owner.so_minor_id */ + \
310 /* eir_server_owner.so_major_id<> */ \
311 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
312 /* eir_server_scope<> */ \
313 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
314 1 /* eir_server_impl_id array length */ + \
315 1 /* nii_domain */ + \
316 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
317 1 /* nii_name */ + \
318 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
319 3 /* nii_date */)
320#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
321#define decode_channel_attrs_maxsz (6 + \
322 1 /* ca_rdma_ird.len */ + \
323 1 /* ca_rdma_ird */)
324#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
325 2 /* csa_clientid */ + \
326 1 /* csa_sequence */ + \
327 1 /* csa_flags */ + \
328 encode_channel_attrs_maxsz + \
329 encode_channel_attrs_maxsz + \
330 1 /* csa_cb_program */ + \
331 1 /* csa_sec_parms.len (1) */ + \
332 1 /* cb_secflavor (AUTH_SYS) */ + \
333 1 /* stamp */ + \
334 1 /* machinename.len */ + \
335 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
336 1 /* uid */ + \
337 1 /* gid */ + \
338 1 /* gids.len (0) */)
339#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
340 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
341 1 /* csr_sequence */ + \
342 1 /* csr_flags */ + \
343 decode_channel_attrs_maxsz + \
344 decode_channel_attrs_maxsz)
345#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
346 /* bctsa_sessid */ \
347 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
348 1 /* bctsa_dir */ + \
349 1 /* bctsa_use_conn_in_rdma_mode */)
350#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
351 /* bctsr_sessid */ \
352 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
353 1 /* bctsr_dir */ + \
354 1 /* bctsr_use_conn_in_rdma_mode */)
355#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
356#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
357#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
358#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
359#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
360 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
361#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
362 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
363#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
364#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
365#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
366 encode_verifier_maxsz)
367#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
368 2 /* nfs_cookie4 gdlr_cookie */ + \
369 decode_verifier_maxsz \
370 /* verifier4 gdlr_verifier */ + \
371 1 /* gdlr_deviceid_list count */ + \
372 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
373 NFS4_DEVICEID4_SIZE) \
374 /* gdlr_deviceid_list */ + \
375 1 /* bool gdlr_eof */)
376#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
377 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
378#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
379 1 /* layout type */ + \
380 1 /* opaque devaddr4 length */ + \
381 /* devaddr4 payload is read into page */ \
382 1 /* notification bitmap length */ + \
383 1 /* notification bitmap */)
384#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
385 encode_stateid_maxsz)
386#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
387 decode_stateid_maxsz + \
388 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
389#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
390 2 /* offset */ + \
391 2 /* length */ + \
392 1 /* reclaim */ + \
393 encode_stateid_maxsz + \
394 1 /* new offset (true) */ + \
395 2 /* last byte written */ + \
396 1 /* nt_timechanged (false) */ + \
397 1 /* layoutupdate4 layout type */ + \
398 1 /* NULL filelayout layoutupdate4 payload */)
399#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
400#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
401 encode_stateid_maxsz + \
402 1 /* FIXME: opaque lrf_body always empty at the moment */)
403#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
404 1 + decode_stateid_maxsz)
405#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
406#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
407#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
408 XDR_QUADLEN(NFS4_STATEID_SIZE))
409#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
410#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
411 XDR_QUADLEN(NFS4_STATEID_SIZE))
412#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
413#else /* CONFIG_NFS_V4_1 */
414#define encode_sequence_maxsz 0
415#define decode_sequence_maxsz 0
416#endif /* CONFIG_NFS_V4_1 */
417
418#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
419#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
420#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_read_maxsz)
424#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
425 decode_sequence_maxsz + \
426 decode_putfh_maxsz + \
427 decode_read_maxsz)
428#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
429 encode_sequence_maxsz + \
430 encode_putfh_maxsz + \
431 encode_readlink_maxsz)
432#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
433 decode_sequence_maxsz + \
434 decode_putfh_maxsz + \
435 decode_readlink_maxsz)
436#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
437 encode_sequence_maxsz + \
438 encode_putfh_maxsz + \
439 encode_readdir_maxsz)
440#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
441 decode_sequence_maxsz + \
442 decode_putfh_maxsz + \
443 decode_readdir_maxsz)
444#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
445 encode_sequence_maxsz + \
446 encode_putfh_maxsz + \
447 encode_write_maxsz + \
448 encode_getattr_maxsz)
449#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
450 decode_sequence_maxsz + \
451 decode_putfh_maxsz + \
452 decode_write_maxsz + \
453 decode_getattr_maxsz)
454#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
455 encode_sequence_maxsz + \
456 encode_putfh_maxsz + \
457 encode_commit_maxsz)
458#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
459 decode_sequence_maxsz + \
460 decode_putfh_maxsz + \
461 decode_commit_maxsz)
462#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
463 encode_sequence_maxsz + \
464 encode_putfh_maxsz + \
465 encode_open_maxsz + \
466 encode_access_maxsz + \
467 encode_getfh_maxsz + \
468 encode_getattr_maxsz)
469#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
470 decode_sequence_maxsz + \
471 decode_putfh_maxsz + \
472 decode_open_maxsz + \
473 decode_access_maxsz + \
474 decode_getfh_maxsz + \
475 decode_getattr_maxsz)
476#define NFS4_enc_open_confirm_sz \
477 (compound_encode_hdr_maxsz + \
478 encode_putfh_maxsz + \
479 encode_open_confirm_maxsz)
480#define NFS4_dec_open_confirm_sz \
481 (compound_decode_hdr_maxsz + \
482 decode_putfh_maxsz + \
483 decode_open_confirm_maxsz)
484#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
485 encode_sequence_maxsz + \
486 encode_putfh_maxsz + \
487 encode_open_maxsz + \
488 encode_access_maxsz + \
489 encode_getattr_maxsz)
490#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
491 decode_sequence_maxsz + \
492 decode_putfh_maxsz + \
493 decode_open_maxsz + \
494 decode_access_maxsz + \
495 decode_getattr_maxsz)
496#define NFS4_enc_open_downgrade_sz \
497 (compound_encode_hdr_maxsz + \
498 encode_sequence_maxsz + \
499 encode_putfh_maxsz + \
500 encode_open_downgrade_maxsz + \
501 encode_getattr_maxsz)
502#define NFS4_dec_open_downgrade_sz \
503 (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_open_downgrade_maxsz + \
507 decode_getattr_maxsz)
508#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
509 encode_sequence_maxsz + \
510 encode_putfh_maxsz + \
511 encode_close_maxsz + \
512 encode_getattr_maxsz)
513#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
514 decode_sequence_maxsz + \
515 decode_putfh_maxsz + \
516 decode_close_maxsz + \
517 decode_getattr_maxsz)
518#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
519 encode_sequence_maxsz + \
520 encode_putfh_maxsz + \
521 encode_setattr_maxsz + \
522 encode_getattr_maxsz)
523#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
524 decode_sequence_maxsz + \
525 decode_putfh_maxsz + \
526 decode_setattr_maxsz + \
527 decode_getattr_maxsz)
528#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
529 encode_sequence_maxsz + \
530 encode_putfh_maxsz + \
531 encode_fsinfo_maxsz)
532#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
533 decode_sequence_maxsz + \
534 decode_putfh_maxsz + \
535 decode_fsinfo_maxsz)
536#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
537 encode_renew_maxsz)
538#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
539 decode_renew_maxsz)
540#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
541 encode_setclientid_maxsz)
542#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
543 decode_setclientid_maxsz)
544#define NFS4_enc_setclientid_confirm_sz \
545 (compound_encode_hdr_maxsz + \
546 encode_setclientid_confirm_maxsz)
547#define NFS4_dec_setclientid_confirm_sz \
548 (compound_decode_hdr_maxsz + \
549 decode_setclientid_confirm_maxsz)
550#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
551 encode_sequence_maxsz + \
552 encode_putfh_maxsz + \
553 encode_lock_maxsz)
554#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
555 decode_sequence_maxsz + \
556 decode_putfh_maxsz + \
557 decode_lock_maxsz)
558#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
559 encode_sequence_maxsz + \
560 encode_putfh_maxsz + \
561 encode_lockt_maxsz)
562#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
563 decode_sequence_maxsz + \
564 decode_putfh_maxsz + \
565 decode_lockt_maxsz)
566#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
567 encode_sequence_maxsz + \
568 encode_putfh_maxsz + \
569 encode_locku_maxsz)
570#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
571 decode_sequence_maxsz + \
572 decode_putfh_maxsz + \
573 decode_locku_maxsz)
574#define NFS4_enc_release_lockowner_sz \
575 (compound_encode_hdr_maxsz + \
576 encode_lockowner_maxsz)
577#define NFS4_dec_release_lockowner_sz \
578 (compound_decode_hdr_maxsz + \
579 decode_lockowner_maxsz)
580#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
581 encode_sequence_maxsz + \
582 encode_putfh_maxsz + \
583 encode_access_maxsz + \
584 encode_getattr_maxsz)
585#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
586 decode_sequence_maxsz + \
587 decode_putfh_maxsz + \
588 decode_access_maxsz + \
589 decode_getattr_maxsz)
590#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
591 encode_sequence_maxsz + \
592 encode_putfh_maxsz + \
593 encode_getattr_maxsz + \
594 encode_renew_maxsz)
595#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_getattr_maxsz + \
599 decode_renew_maxsz)
600#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
601 encode_sequence_maxsz + \
602 encode_putfh_maxsz + \
603 encode_lookup_maxsz + \
604 encode_getattr_maxsz + \
605 encode_getfh_maxsz)
606#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
607 decode_sequence_maxsz + \
608 decode_putfh_maxsz + \
609 decode_lookup_maxsz + \
610 decode_getattr_maxsz + \
611 decode_getfh_maxsz)
612#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putrootfh_maxsz + \
615 encode_getattr_maxsz + \
616 encode_getfh_maxsz)
617#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
618 decode_sequence_maxsz + \
619 decode_putrootfh_maxsz + \
620 decode_getattr_maxsz + \
621 decode_getfh_maxsz)
622#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
623 encode_sequence_maxsz + \
624 encode_putfh_maxsz + \
625 encode_remove_maxsz)
626#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
627 decode_sequence_maxsz + \
628 decode_putfh_maxsz + \
629 decode_remove_maxsz)
630#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
631 encode_sequence_maxsz + \
632 encode_putfh_maxsz + \
633 encode_savefh_maxsz + \
634 encode_putfh_maxsz + \
635 encode_rename_maxsz)
636#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
637 decode_sequence_maxsz + \
638 decode_putfh_maxsz + \
639 decode_savefh_maxsz + \
640 decode_putfh_maxsz + \
641 decode_rename_maxsz)
642#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
643 encode_sequence_maxsz + \
644 encode_putfh_maxsz + \
645 encode_savefh_maxsz + \
646 encode_putfh_maxsz + \
647 encode_link_maxsz + \
648 encode_restorefh_maxsz + \
649 encode_getattr_maxsz)
650#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
651 decode_sequence_maxsz + \
652 decode_putfh_maxsz + \
653 decode_savefh_maxsz + \
654 decode_putfh_maxsz + \
655 decode_link_maxsz + \
656 decode_restorefh_maxsz + \
657 decode_getattr_maxsz)
658#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
659 encode_sequence_maxsz + \
660 encode_putfh_maxsz + \
661 encode_symlink_maxsz + \
662 encode_getattr_maxsz + \
663 encode_getfh_maxsz)
664#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
665 decode_sequence_maxsz + \
666 decode_putfh_maxsz + \
667 decode_symlink_maxsz + \
668 decode_getattr_maxsz + \
669 decode_getfh_maxsz)
670#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
671 encode_sequence_maxsz + \
672 encode_putfh_maxsz + \
673 encode_create_maxsz + \
674 encode_getfh_maxsz + \
675 encode_getattr_maxsz)
676#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
677 decode_sequence_maxsz + \
678 decode_putfh_maxsz + \
679 decode_create_maxsz + \
680 decode_getfh_maxsz + \
681 decode_getattr_maxsz)
682#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
683 encode_sequence_maxsz + \
684 encode_putfh_maxsz + \
685 encode_getattr_maxsz)
686#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
687 decode_sequence_maxsz + \
688 decode_putfh_maxsz + \
689 decode_getattr_maxsz)
690#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
691 encode_sequence_maxsz + \
692 encode_putfh_maxsz + \
693 encode_statfs_maxsz)
694#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
695 decode_sequence_maxsz + \
696 decode_putfh_maxsz + \
697 decode_statfs_maxsz)
698#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
699 encode_sequence_maxsz + \
700 encode_putfh_maxsz + \
701 encode_getattr_maxsz)
702#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
703 decode_sequence_maxsz + \
704 decode_putfh_maxsz + \
705 decode_getattr_maxsz)
706#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
707 encode_sequence_maxsz + \
708 encode_putfh_maxsz + \
709 encode_delegreturn_maxsz + \
710 encode_getattr_maxsz)
711#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
712 decode_sequence_maxsz + \
713 decode_delegreturn_maxsz + \
714 decode_getattr_maxsz)
715#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
716 encode_sequence_maxsz + \
717 encode_putfh_maxsz + \
718 encode_getacl_maxsz)
719#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
720 decode_sequence_maxsz + \
721 decode_putfh_maxsz + \
722 decode_getacl_maxsz)
723#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
724 encode_sequence_maxsz + \
725 encode_putfh_maxsz + \
726 encode_setacl_maxsz)
727#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_setacl_maxsz)
731#define NFS4_enc_fs_locations_sz \
732 (compound_encode_hdr_maxsz + \
733 encode_sequence_maxsz + \
734 encode_putfh_maxsz + \
735 encode_lookup_maxsz + \
736 encode_fs_locations_maxsz + \
737 encode_renew_maxsz)
738#define NFS4_dec_fs_locations_sz \
739 (compound_decode_hdr_maxsz + \
740 decode_sequence_maxsz + \
741 decode_putfh_maxsz + \
742 decode_lookup_maxsz + \
743 decode_fs_locations_maxsz + \
744 decode_renew_maxsz)
745#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
746 encode_sequence_maxsz + \
747 encode_putfh_maxsz + \
748 encode_secinfo_maxsz)
749#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
750 decode_sequence_maxsz + \
751 decode_putfh_maxsz + \
752 decode_secinfo_maxsz)
753#define NFS4_enc_fsid_present_sz \
754 (compound_encode_hdr_maxsz + \
755 encode_sequence_maxsz + \
756 encode_putfh_maxsz + \
757 encode_getfh_maxsz + \
758 encode_renew_maxsz)
759#define NFS4_dec_fsid_present_sz \
760 (compound_decode_hdr_maxsz + \
761 decode_sequence_maxsz + \
762 decode_putfh_maxsz + \
763 decode_getfh_maxsz + \
764 decode_renew_maxsz)
765#if defined(CONFIG_NFS_V4_1)
766#define NFS4_enc_bind_conn_to_session_sz \
767 (compound_encode_hdr_maxsz + \
768 encode_bind_conn_to_session_maxsz)
769#define NFS4_dec_bind_conn_to_session_sz \
770 (compound_decode_hdr_maxsz + \
771 decode_bind_conn_to_session_maxsz)
772#define NFS4_enc_exchange_id_sz \
773 (compound_encode_hdr_maxsz + \
774 encode_exchange_id_maxsz)
775#define NFS4_dec_exchange_id_sz \
776 (compound_decode_hdr_maxsz + \
777 decode_exchange_id_maxsz)
778#define NFS4_enc_create_session_sz \
779 (compound_encode_hdr_maxsz + \
780 encode_create_session_maxsz)
781#define NFS4_dec_create_session_sz \
782 (compound_decode_hdr_maxsz + \
783 decode_create_session_maxsz)
784#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
785 encode_destroy_session_maxsz)
786#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
787 decode_destroy_session_maxsz)
788#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
789 encode_destroy_clientid_maxsz)
790#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
791 decode_destroy_clientid_maxsz)
792#define NFS4_enc_sequence_sz \
793 (compound_decode_hdr_maxsz + \
794 encode_sequence_maxsz)
795#define NFS4_dec_sequence_sz \
796 (compound_decode_hdr_maxsz + \
797 decode_sequence_maxsz)
798#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
799 encode_sequence_maxsz + \
800 encode_putrootfh_maxsz + \
801 encode_fsinfo_maxsz)
802#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
803 decode_sequence_maxsz + \
804 decode_putrootfh_maxsz + \
805 decode_fsinfo_maxsz)
806#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
807 encode_sequence_maxsz + \
808 encode_reclaim_complete_maxsz)
809#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
810 decode_sequence_maxsz + \
811 decode_reclaim_complete_maxsz)
812#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
813 encode_sequence_maxsz + \
814 encode_putfh_maxsz + \
815 encode_getdevicelist_maxsz)
816#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
817 decode_sequence_maxsz + \
818 decode_putfh_maxsz + \
819 decode_getdevicelist_maxsz)
820#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz +\
822 encode_getdeviceinfo_maxsz)
823#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
824 decode_sequence_maxsz + \
825 decode_getdeviceinfo_maxsz)
826#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
827 encode_sequence_maxsz + \
828 encode_putfh_maxsz + \
829 encode_layoutget_maxsz)
830#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
831 decode_sequence_maxsz + \
832 decode_putfh_maxsz + \
833 decode_layoutget_maxsz)
834#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
835 encode_sequence_maxsz +\
836 encode_putfh_maxsz + \
837 encode_layoutcommit_maxsz + \
838 encode_getattr_maxsz)
839#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
840 decode_sequence_maxsz + \
841 decode_putfh_maxsz + \
842 decode_layoutcommit_maxsz + \
843 decode_getattr_maxsz)
844#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
845 encode_sequence_maxsz + \
846 encode_putfh_maxsz + \
847 encode_layoutreturn_maxsz)
848#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
849 decode_sequence_maxsz + \
850 decode_putfh_maxsz + \
851 decode_layoutreturn_maxsz)
852#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
853 encode_sequence_maxsz + \
854 encode_putrootfh_maxsz +\
855 encode_secinfo_no_name_maxsz)
856#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
857 decode_sequence_maxsz + \
858 decode_putrootfh_maxsz + \
859 decode_secinfo_no_name_maxsz)
860#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
861 encode_sequence_maxsz + \
862 encode_test_stateid_maxsz)
863#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
864 decode_sequence_maxsz + \
865 decode_test_stateid_maxsz)
866#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
867 encode_sequence_maxsz + \
868 encode_free_stateid_maxsz)
869#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
870 decode_sequence_maxsz + \
871 decode_free_stateid_maxsz)
872
873const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
874 compound_encode_hdr_maxsz +
875 encode_sequence_maxsz +
876 encode_putfh_maxsz +
877 encode_getattr_maxsz) *
878 XDR_UNIT);
879
880const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
881 compound_decode_hdr_maxsz +
882 decode_sequence_maxsz +
883 decode_putfh_maxsz) *
884 XDR_UNIT);
885
886const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
887 compound_decode_hdr_maxsz +
888 decode_sequence_maxsz) *
889 XDR_UNIT);
890EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
891#endif /* CONFIG_NFS_V4_1 */
892
893static const umode_t nfs_type2fmt[] = {
894 [NF4BAD] = 0,
895 [NF4REG] = S_IFREG,
896 [NF4DIR] = S_IFDIR,
897 [NF4BLK] = S_IFBLK,
898 [NF4CHR] = S_IFCHR,
899 [NF4LNK] = S_IFLNK,
900 [NF4SOCK] = S_IFSOCK,
901 [NF4FIFO] = S_IFIFO,
902 [NF4ATTRDIR] = 0,
903 [NF4NAMEDATTR] = 0,
904};
905
906struct compound_hdr {
907 int32_t status;
908 uint32_t nops;
909 __be32 * nops_p;
910 uint32_t taglen;
911 char * tag;
912 uint32_t replen; /* expected reply words */
913 u32 minorversion;
914};
915
916static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
917{
918 __be32 *p = xdr_reserve_space(xdr, nbytes);
919 BUG_ON(!p);
920 return p;
921}
922
923static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
924{
925 __be32 *p;
926
927 p = xdr_reserve_space(xdr, len);
928 xdr_encode_opaque_fixed(p, buf, len);
929}
930
931static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
932{
933 __be32 *p;
934
935 p = reserve_space(xdr, 4 + len);
936 xdr_encode_opaque(p, str, len);
937}
938
939static void encode_uint32(struct xdr_stream *xdr, u32 n)
940{
941 __be32 *p;
942
943 p = reserve_space(xdr, 4);
944 *p = cpu_to_be32(n);
945}
946
947static void encode_uint64(struct xdr_stream *xdr, u64 n)
948{
949 __be32 *p;
950
951 p = reserve_space(xdr, 8);
952 xdr_encode_hyper(p, n);
953}
954
955static void encode_nfs4_seqid(struct xdr_stream *xdr,
956 const struct nfs_seqid *seqid)
957{
958 encode_uint32(xdr, seqid->sequence->counter);
959}
960
961static void encode_compound_hdr(struct xdr_stream *xdr,
962 struct rpc_rqst *req,
963 struct compound_hdr *hdr)
964{
965 __be32 *p;
966 struct rpc_auth *auth = req->rq_cred->cr_auth;
967
968 /* initialize running count of expected bytes in reply.
969 * NOTE: the replied tag SHOULD be the same is the one sent,
970 * but this is not required as a MUST for the server to do so. */
971 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
972
973 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
974 encode_string(xdr, hdr->taglen, hdr->tag);
975 p = reserve_space(xdr, 8);
976 *p++ = cpu_to_be32(hdr->minorversion);
977 hdr->nops_p = p;
978 *p = cpu_to_be32(hdr->nops);
979}
980
981static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
982 uint32_t replen,
983 struct compound_hdr *hdr)
984{
985 encode_uint32(xdr, op);
986 hdr->nops++;
987 hdr->replen += replen;
988}
989
990static void encode_nops(struct compound_hdr *hdr)
991{
992 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
993 *hdr->nops_p = htonl(hdr->nops);
994}
995
996static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
997{
998 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
999}
1000
1001static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1002{
1003 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1004}
1005
1006static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1007 const struct nfs4_label *label,
1008 const struct nfs_server *server)
1009{
1010 char owner_name[IDMAP_NAMESZ];
1011 char owner_group[IDMAP_NAMESZ];
1012 int owner_namelen = 0;
1013 int owner_grouplen = 0;
1014 __be32 *p;
1015 unsigned i;
1016 uint32_t len = 0;
1017 uint32_t bmval_len;
1018 uint32_t bmval[3] = { 0 };
1019
1020 /*
1021 * We reserve enough space to write the entire attribute buffer at once.
1022 * In the worst-case, this would be
1023 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1024 * = 40 bytes, plus any contribution from variable-length fields
1025 * such as owner/group.
1026 */
1027 if (iap->ia_valid & ATTR_SIZE) {
1028 bmval[0] |= FATTR4_WORD0_SIZE;
1029 len += 8;
1030 }
1031 if (iap->ia_valid & ATTR_MODE) {
1032 bmval[1] |= FATTR4_WORD1_MODE;
1033 len += 4;
1034 }
1035 if (iap->ia_valid & ATTR_UID) {
1036 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1037 if (owner_namelen < 0) {
1038 dprintk("nfs: couldn't resolve uid %d to string\n",
1039 from_kuid(&init_user_ns, iap->ia_uid));
1040 /* XXX */
1041 strcpy(owner_name, "nobody");
1042 owner_namelen = sizeof("nobody") - 1;
1043 /* goto out; */
1044 }
1045 bmval[1] |= FATTR4_WORD1_OWNER;
1046 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1047 }
1048 if (iap->ia_valid & ATTR_GID) {
1049 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1050 if (owner_grouplen < 0) {
1051 dprintk("nfs: couldn't resolve gid %d to string\n",
1052 from_kgid(&init_user_ns, iap->ia_gid));
1053 strcpy(owner_group, "nobody");
1054 owner_grouplen = sizeof("nobody") - 1;
1055 /* goto out; */
1056 }
1057 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1058 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1059 }
1060 if (iap->ia_valid & ATTR_ATIME_SET) {
1061 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1062 len += 16;
1063 } else if (iap->ia_valid & ATTR_ATIME) {
1064 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1065 len += 4;
1066 }
1067 if (iap->ia_valid & ATTR_MTIME_SET) {
1068 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1069 len += 16;
1070 } else if (iap->ia_valid & ATTR_MTIME) {
1071 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1072 len += 4;
1073 }
1074 if (label) {
1075 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1076 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1077 }
1078
1079 if (bmval[2] != 0)
1080 bmval_len = 3;
1081 else if (bmval[1] != 0)
1082 bmval_len = 2;
1083 else
1084 bmval_len = 1;
1085
1086 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1087
1088 *p++ = cpu_to_be32(bmval_len);
1089 for (i = 0; i < bmval_len; i++)
1090 *p++ = cpu_to_be32(bmval[i]);
1091 *p++ = cpu_to_be32(len);
1092
1093 if (bmval[0] & FATTR4_WORD0_SIZE)
1094 p = xdr_encode_hyper(p, iap->ia_size);
1095 if (bmval[1] & FATTR4_WORD1_MODE)
1096 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1097 if (bmval[1] & FATTR4_WORD1_OWNER)
1098 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1099 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1100 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1101 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1102 if (iap->ia_valid & ATTR_ATIME_SET) {
1103 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1104 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1105 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1106 } else
1107 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1108 }
1109 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1110 if (iap->ia_valid & ATTR_MTIME_SET) {
1111 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1112 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1113 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1114 } else
1115 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1116 }
1117 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1118 *p++ = cpu_to_be32(label->lfs);
1119 *p++ = cpu_to_be32(label->pi);
1120 *p++ = cpu_to_be32(label->len);
1121 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1122 }
1123
1124/* out: */
1125}
1126
1127static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1128{
1129 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1130 encode_uint32(xdr, access);
1131}
1132
1133static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1134{
1135 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1136 encode_nfs4_seqid(xdr, arg->seqid);
1137 encode_nfs4_stateid(xdr, arg->stateid);
1138}
1139
1140static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1141{
1142 __be32 *p;
1143
1144 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1145 p = reserve_space(xdr, 12);
1146 p = xdr_encode_hyper(p, args->offset);
1147 *p = cpu_to_be32(args->count);
1148}
1149
1150static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1151{
1152 __be32 *p;
1153
1154 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1155 encode_uint32(xdr, create->ftype);
1156
1157 switch (create->ftype) {
1158 case NF4LNK:
1159 p = reserve_space(xdr, 4);
1160 *p = cpu_to_be32(create->u.symlink.len);
1161 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1162 break;
1163
1164 case NF4BLK: case NF4CHR:
1165 p = reserve_space(xdr, 8);
1166 *p++ = cpu_to_be32(create->u.device.specdata1);
1167 *p = cpu_to_be32(create->u.device.specdata2);
1168 break;
1169
1170 default:
1171 break;
1172 }
1173
1174 encode_string(xdr, create->name->len, create->name->name);
1175 encode_attrs(xdr, create->attrs, create->label, create->server);
1176}
1177
1178static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1179{
1180 __be32 *p;
1181
1182 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1183 p = reserve_space(xdr, 8);
1184 *p++ = cpu_to_be32(1);
1185 *p = cpu_to_be32(bitmap);
1186}
1187
1188static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1189{
1190 __be32 *p;
1191
1192 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1193 p = reserve_space(xdr, 12);
1194 *p++ = cpu_to_be32(2);
1195 *p++ = cpu_to_be32(bm0);
1196 *p = cpu_to_be32(bm1);
1197}
1198
1199static void
1200encode_getattr_three(struct xdr_stream *xdr,
1201 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1202 struct compound_hdr *hdr)
1203{
1204 __be32 *p;
1205
1206 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1207 if (bm2) {
1208 p = reserve_space(xdr, 16);
1209 *p++ = cpu_to_be32(3);
1210 *p++ = cpu_to_be32(bm0);
1211 *p++ = cpu_to_be32(bm1);
1212 *p = cpu_to_be32(bm2);
1213 } else if (bm1) {
1214 p = reserve_space(xdr, 12);
1215 *p++ = cpu_to_be32(2);
1216 *p++ = cpu_to_be32(bm0);
1217 *p = cpu_to_be32(bm1);
1218 } else {
1219 p = reserve_space(xdr, 8);
1220 *p++ = cpu_to_be32(1);
1221 *p = cpu_to_be32(bm0);
1222 }
1223}
1224
1225static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1226{
1227 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1228 bitmask[1] & nfs4_fattr_bitmap[1],
1229 bitmask[2] & nfs4_fattr_bitmap[2],
1230 hdr);
1231}
1232
1233static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1234 const u32 *open_bitmap,
1235 struct compound_hdr *hdr)
1236{
1237 encode_getattr_three(xdr,
1238 bitmask[0] & open_bitmap[0],
1239 bitmask[1] & open_bitmap[1],
1240 bitmask[2] & open_bitmap[2],
1241 hdr);
1242}
1243
1244static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1245{
1246 encode_getattr_three(xdr,
1247 bitmask[0] & nfs4_fsinfo_bitmap[0],
1248 bitmask[1] & nfs4_fsinfo_bitmap[1],
1249 bitmask[2] & nfs4_fsinfo_bitmap[2],
1250 hdr);
1251}
1252
1253static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1254{
1255 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1256 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1257}
1258
1259static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1260{
1261 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1262}
1263
1264static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1265{
1266 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1267 encode_string(xdr, name->len, name->name);
1268}
1269
1270static inline int nfs4_lock_type(struct file_lock *fl, int block)
1271{
1272 if (fl->fl_type == F_RDLCK)
1273 return block ? NFS4_READW_LT : NFS4_READ_LT;
1274 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1275}
1276
1277static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1278{
1279 if (fl->fl_end == OFFSET_MAX)
1280 return ~(uint64_t)0;
1281 return fl->fl_end - fl->fl_start + 1;
1282}
1283
1284static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1285{
1286 __be32 *p;
1287
1288 p = reserve_space(xdr, 32);
1289 p = xdr_encode_hyper(p, lowner->clientid);
1290 *p++ = cpu_to_be32(20);
1291 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1292 *p++ = cpu_to_be32(lowner->s_dev);
1293 xdr_encode_hyper(p, lowner->id);
1294}
1295
1296/*
1297 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1298 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1299 */
1300static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1301{
1302 __be32 *p;
1303
1304 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1305 p = reserve_space(xdr, 28);
1306 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1307 *p++ = cpu_to_be32(args->reclaim);
1308 p = xdr_encode_hyper(p, args->fl->fl_start);
1309 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1310 *p = cpu_to_be32(args->new_lock_owner);
1311 if (args->new_lock_owner){
1312 encode_nfs4_seqid(xdr, args->open_seqid);
1313 encode_nfs4_stateid(xdr, args->open_stateid);
1314 encode_nfs4_seqid(xdr, args->lock_seqid);
1315 encode_lockowner(xdr, &args->lock_owner);
1316 }
1317 else {
1318 encode_nfs4_stateid(xdr, args->lock_stateid);
1319 encode_nfs4_seqid(xdr, args->lock_seqid);
1320 }
1321}
1322
1323static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1324{
1325 __be32 *p;
1326
1327 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1328 p = reserve_space(xdr, 20);
1329 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1330 p = xdr_encode_hyper(p, args->fl->fl_start);
1331 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1332 encode_lockowner(xdr, &args->lock_owner);
1333}
1334
1335static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1336{
1337 __be32 *p;
1338
1339 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1340 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1341 encode_nfs4_seqid(xdr, args->seqid);
1342 encode_nfs4_stateid(xdr, args->stateid);
1343 p = reserve_space(xdr, 16);
1344 p = xdr_encode_hyper(p, args->fl->fl_start);
1345 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1346}
1347
1348static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1349{
1350 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1351 encode_lockowner(xdr, lowner);
1352}
1353
1354static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1355{
1356 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1357 encode_string(xdr, name->len, name->name);
1358}
1359
1360static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1361{
1362 __be32 *p;
1363
1364 p = reserve_space(xdr, 8);
1365 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1366 case FMODE_READ:
1367 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1368 break;
1369 case FMODE_WRITE:
1370 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1371 break;
1372 case FMODE_READ|FMODE_WRITE:
1373 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1374 break;
1375 default:
1376 *p++ = cpu_to_be32(0);
1377 }
1378 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1379}
1380
1381static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1382{
1383 __be32 *p;
1384 /*
1385 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1386 * owner 4 = 32
1387 */
1388 encode_nfs4_seqid(xdr, arg->seqid);
1389 encode_share_access(xdr, arg->fmode);
1390 p = reserve_space(xdr, 36);
1391 p = xdr_encode_hyper(p, arg->clientid);
1392 *p++ = cpu_to_be32(24);
1393 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1394 *p++ = cpu_to_be32(arg->server->s_dev);
1395 *p++ = cpu_to_be32(arg->id.uniquifier);
1396 xdr_encode_hyper(p, arg->id.create_time);
1397}
1398
1399static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1400{
1401 struct iattr dummy;
1402 __be32 *p;
1403
1404 p = reserve_space(xdr, 4);
1405 switch(arg->createmode) {
1406 case NFS4_CREATE_UNCHECKED:
1407 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1408 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1409 break;
1410 case NFS4_CREATE_GUARDED:
1411 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1412 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1413 break;
1414 case NFS4_CREATE_EXCLUSIVE:
1415 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1416 encode_nfs4_verifier(xdr, &arg->u.verifier);
1417 break;
1418 case NFS4_CREATE_EXCLUSIVE4_1:
1419 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1420 encode_nfs4_verifier(xdr, &arg->u.verifier);
1421 dummy.ia_valid = 0;
1422 encode_attrs(xdr, &dummy, arg->label, arg->server);
1423 }
1424}
1425
1426static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1427{
1428 __be32 *p;
1429
1430 p = reserve_space(xdr, 4);
1431 switch (arg->open_flags & O_CREAT) {
1432 case 0:
1433 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1434 break;
1435 default:
1436 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1437 encode_createmode(xdr, arg);
1438 }
1439}
1440
1441static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1442{
1443 __be32 *p;
1444
1445 p = reserve_space(xdr, 4);
1446 switch (delegation_type) {
1447 case 0:
1448 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1449 break;
1450 case FMODE_READ:
1451 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1452 break;
1453 case FMODE_WRITE|FMODE_READ:
1454 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1455 break;
1456 default:
1457 BUG();
1458 }
1459}
1460
1461static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1462{
1463 __be32 *p;
1464
1465 p = reserve_space(xdr, 4);
1466 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1467 encode_string(xdr, name->len, name->name);
1468}
1469
1470static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1471{
1472 __be32 *p;
1473
1474 p = reserve_space(xdr, 4);
1475 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1476 encode_delegation_type(xdr, type);
1477}
1478
1479static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1480{
1481 __be32 *p;
1482
1483 p = reserve_space(xdr, 4);
1484 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1485 encode_nfs4_stateid(xdr, stateid);
1486 encode_string(xdr, name->len, name->name);
1487}
1488
1489static inline void encode_claim_fh(struct xdr_stream *xdr)
1490{
1491 __be32 *p;
1492
1493 p = reserve_space(xdr, 4);
1494 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1495}
1496
1497static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1498{
1499 __be32 *p;
1500
1501 p = reserve_space(xdr, 4);
1502 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1503 encode_nfs4_stateid(xdr, stateid);
1504}
1505
1506static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1507{
1508 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1509 encode_openhdr(xdr, arg);
1510 encode_opentype(xdr, arg);
1511 switch (arg->claim) {
1512 case NFS4_OPEN_CLAIM_NULL:
1513 encode_claim_null(xdr, arg->name);
1514 break;
1515 case NFS4_OPEN_CLAIM_PREVIOUS:
1516 encode_claim_previous(xdr, arg->u.delegation_type);
1517 break;
1518 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1519 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1520 break;
1521 case NFS4_OPEN_CLAIM_FH:
1522 encode_claim_fh(xdr);
1523 break;
1524 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1525 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1526 break;
1527 default:
1528 BUG();
1529 }
1530}
1531
1532static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1533{
1534 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1535 encode_nfs4_stateid(xdr, arg->stateid);
1536 encode_nfs4_seqid(xdr, arg->seqid);
1537}
1538
1539static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1540{
1541 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1542 encode_nfs4_stateid(xdr, arg->stateid);
1543 encode_nfs4_seqid(xdr, arg->seqid);
1544 encode_share_access(xdr, arg->fmode);
1545}
1546
1547static void
1548encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1549{
1550 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1551 encode_string(xdr, fh->size, fh->data);
1552}
1553
1554static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1555{
1556 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1557}
1558
1559static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1560{
1561 __be32 *p;
1562
1563 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1564 encode_nfs4_stateid(xdr, &args->stateid);
1565
1566 p = reserve_space(xdr, 12);
1567 p = xdr_encode_hyper(p, args->offset);
1568 *p = cpu_to_be32(args->count);
1569}
1570
1571static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1572{
1573 uint32_t attrs[3] = {
1574 FATTR4_WORD0_RDATTR_ERROR,
1575 FATTR4_WORD1_MOUNTED_ON_FILEID,
1576 };
1577 uint32_t dircount = readdir->count >> 1;
1578 __be32 *p, verf[2];
1579 uint32_t attrlen = 0;
1580 unsigned int i;
1581
1582 if (readdir->plus) {
1583 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1584 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1585 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1586 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1587 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1588 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1589 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1590 dircount >>= 1;
1591 }
1592 /* Use mounted_on_fileid only if the server supports it */
1593 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1594 attrs[0] |= FATTR4_WORD0_FILEID;
1595 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1596 attrs[i] &= readdir->bitmask[i];
1597 if (attrs[i] != 0)
1598 attrlen = i+1;
1599 }
1600
1601 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1602 encode_uint64(xdr, readdir->cookie);
1603 encode_nfs4_verifier(xdr, &readdir->verifier);
1604 p = reserve_space(xdr, 12 + (attrlen << 2));
1605 *p++ = cpu_to_be32(dircount);
1606 *p++ = cpu_to_be32(readdir->count);
1607 *p++ = cpu_to_be32(attrlen);
1608 for (i = 0; i < attrlen; i++)
1609 *p++ = cpu_to_be32(attrs[i]);
1610 memcpy(verf, readdir->verifier.data, sizeof(verf));
1611
1612 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1613 __func__,
1614 (unsigned long long)readdir->cookie,
1615 verf[0], verf[1],
1616 attrs[0] & readdir->bitmask[0],
1617 attrs[1] & readdir->bitmask[1],
1618 attrs[2] & readdir->bitmask[2]);
1619}
1620
1621static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1622{
1623 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1624}
1625
1626static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1627{
1628 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1629 encode_string(xdr, name->len, name->name);
1630}
1631
1632static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1633{
1634 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1635 encode_string(xdr, oldname->len, oldname->name);
1636 encode_string(xdr, newname->len, newname->name);
1637}
1638
1639static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1640 struct compound_hdr *hdr)
1641{
1642 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1643 encode_uint64(xdr, clid);
1644}
1645
1646static void
1647encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1648{
1649 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1650}
1651
1652static void
1653encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1654{
1655 __be32 *p;
1656
1657 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1658 encode_nfs4_stateid(xdr, &zero_stateid);
1659 p = reserve_space(xdr, 2*4);
1660 *p++ = cpu_to_be32(1);
1661 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1662 p = reserve_space(xdr, 4);
1663 *p = cpu_to_be32(arg->acl_len);
1664 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1665}
1666
1667static void
1668encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1669{
1670 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1671}
1672
1673static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1674{
1675 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1676 encode_nfs4_stateid(xdr, &arg->stateid);
1677 encode_attrs(xdr, arg->iap, arg->label, server);
1678}
1679
1680static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1681{
1682 __be32 *p;
1683
1684 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1685 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1686
1687 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1688 p = reserve_space(xdr, 4);
1689 *p = cpu_to_be32(setclientid->sc_prog);
1690 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1691 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1692 p = reserve_space(xdr, 4);
1693 *p = cpu_to_be32(setclientid->sc_cb_ident);
1694}
1695
1696static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1697{
1698 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1699 decode_setclientid_confirm_maxsz, hdr);
1700 encode_uint64(xdr, arg->clientid);
1701 encode_nfs4_verifier(xdr, &arg->confirm);
1702}
1703
1704static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1705{
1706 __be32 *p;
1707
1708 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1709 encode_nfs4_stateid(xdr, &args->stateid);
1710
1711 p = reserve_space(xdr, 16);
1712 p = xdr_encode_hyper(p, args->offset);
1713 *p++ = cpu_to_be32(args->stable);
1714 *p = cpu_to_be32(args->count);
1715
1716 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1717}
1718
1719static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1720{
1721 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1722 encode_nfs4_stateid(xdr, stateid);
1723}
1724
1725static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1726{
1727 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1728 encode_string(xdr, name->len, name->name);
1729}
1730
1731#if defined(CONFIG_NFS_V4_1)
1732/* NFSv4.1 operations */
1733static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1734 struct nfs4_session *session,
1735 struct compound_hdr *hdr)
1736{
1737 __be32 *p;
1738
1739 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1740 decode_bind_conn_to_session_maxsz, hdr);
1741 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1742 p = xdr_reserve_space(xdr, 8);
1743 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1744 *p = 0; /* use_conn_in_rdma_mode = False */
1745}
1746
1747static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
1748{
1749 unsigned int i;
1750 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1751 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1752 encode_uint32(xdr, op_map->u.words[i]);
1753}
1754
1755static void encode_exchange_id(struct xdr_stream *xdr,
1756 struct nfs41_exchange_id_args *args,
1757 struct compound_hdr *hdr)
1758{
1759 __be32 *p;
1760 char impl_name[IMPL_NAME_LIMIT];
1761 int len = 0;
1762
1763 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1764 encode_nfs4_verifier(xdr, args->verifier);
1765
1766 encode_string(xdr, args->id_len, args->id);
1767
1768 encode_uint32(xdr, args->flags);
1769 encode_uint32(xdr, args->state_protect.how);
1770
1771 switch (args->state_protect.how) {
1772 case SP4_NONE:
1773 break;
1774 case SP4_MACH_CRED:
1775 encode_op_map(xdr, &args->state_protect.enforce);
1776 encode_op_map(xdr, &args->state_protect.allow);
1777 break;
1778 default:
1779 WARN_ON_ONCE(1);
1780 break;
1781 }
1782
1783 if (send_implementation_id &&
1784 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1785 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1786 <= sizeof(impl_name) + 1)
1787 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1788 utsname()->sysname, utsname()->release,
1789 utsname()->version, utsname()->machine);
1790
1791 if (len > 0) {
1792 encode_uint32(xdr, 1); /* implementation id array length=1 */
1793
1794 encode_string(xdr,
1795 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1796 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1797 encode_string(xdr, len, impl_name);
1798 /* just send zeros for nii_date - the date is in nii_name */
1799 p = reserve_space(xdr, 12);
1800 p = xdr_encode_hyper(p, 0);
1801 *p = cpu_to_be32(0);
1802 } else
1803 encode_uint32(xdr, 0); /* implementation id array length=0 */
1804}
1805
1806static void encode_create_session(struct xdr_stream *xdr,
1807 struct nfs41_create_session_args *args,
1808 struct compound_hdr *hdr)
1809{
1810 __be32 *p;
1811 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1812 uint32_t len;
1813 struct nfs_client *clp = args->client;
1814 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1815 u32 max_resp_sz_cached;
1816
1817 /*
1818 * Assumes OPEN is the biggest non-idempotent compound.
1819 * 2 is the verifier.
1820 */
1821 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1822 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1823
1824 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1825 clp->cl_ipaddr);
1826
1827 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1828 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1829 p = xdr_encode_hyper(p, clp->cl_clientid);
1830 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1831 *p++ = cpu_to_be32(args->flags); /*flags */
1832
1833 /* Fore Channel */
1834 *p++ = cpu_to_be32(0); /* header padding size */
1835 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1836 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1837 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1838 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1839 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1840 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1841
1842 /* Back Channel */
1843 *p++ = cpu_to_be32(0); /* header padding size */
1844 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1845 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1846 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1847 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1848 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1849 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1850
1851 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1852 *p++ = cpu_to_be32(1);
1853 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1854
1855 /* authsys_parms rfc1831 */
1856 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */
1857 p = xdr_encode_opaque(p, machine_name, len);
1858 *p++ = cpu_to_be32(0); /* UID */
1859 *p++ = cpu_to_be32(0); /* GID */
1860 *p = cpu_to_be32(0); /* No more gids */
1861}
1862
1863static void encode_destroy_session(struct xdr_stream *xdr,
1864 struct nfs4_session *session,
1865 struct compound_hdr *hdr)
1866{
1867 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1868 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1869}
1870
1871static void encode_destroy_clientid(struct xdr_stream *xdr,
1872 uint64_t clientid,
1873 struct compound_hdr *hdr)
1874{
1875 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1876 encode_uint64(xdr, clientid);
1877}
1878
1879static void encode_reclaim_complete(struct xdr_stream *xdr,
1880 struct nfs41_reclaim_complete_args *args,
1881 struct compound_hdr *hdr)
1882{
1883 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1884 encode_uint32(xdr, args->one_fs);
1885}
1886#endif /* CONFIG_NFS_V4_1 */
1887
1888static void encode_sequence(struct xdr_stream *xdr,
1889 const struct nfs4_sequence_args *args,
1890 struct compound_hdr *hdr)
1891{
1892#if defined(CONFIG_NFS_V4_1)
1893 struct nfs4_session *session;
1894 struct nfs4_slot_table *tp;
1895 struct nfs4_slot *slot = args->sa_slot;
1896 __be32 *p;
1897
1898 tp = slot->table;
1899 session = tp->session;
1900 if (!session)
1901 return;
1902
1903 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1904
1905 /*
1906 * Sessionid + seqid + slotid + max slotid + cache_this
1907 */
1908 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1909 "max_slotid=%d cache_this=%d\n",
1910 __func__,
1911 ((u32 *)session->sess_id.data)[0],
1912 ((u32 *)session->sess_id.data)[1],
1913 ((u32 *)session->sess_id.data)[2],
1914 ((u32 *)session->sess_id.data)[3],
1915 slot->seq_nr, slot->slot_nr,
1916 tp->highest_used_slotid, args->sa_cache_this);
1917 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1918 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1919 *p++ = cpu_to_be32(slot->seq_nr);
1920 *p++ = cpu_to_be32(slot->slot_nr);
1921 *p++ = cpu_to_be32(tp->highest_used_slotid);
1922 *p = cpu_to_be32(args->sa_cache_this);
1923#endif /* CONFIG_NFS_V4_1 */
1924}
1925
1926#ifdef CONFIG_NFS_V4_1
1927static void
1928encode_getdevicelist(struct xdr_stream *xdr,
1929 const struct nfs4_getdevicelist_args *args,
1930 struct compound_hdr *hdr)
1931{
1932 __be32 *p;
1933 nfs4_verifier dummy = {
1934 .data = "dummmmmy",
1935 };
1936
1937 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1938 p = reserve_space(xdr, 16);
1939 *p++ = cpu_to_be32(args->layoutclass);
1940 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1941 xdr_encode_hyper(p, 0ULL); /* cookie */
1942 encode_nfs4_verifier(xdr, &dummy);
1943}
1944
1945static void
1946encode_getdeviceinfo(struct xdr_stream *xdr,
1947 const struct nfs4_getdeviceinfo_args *args,
1948 struct compound_hdr *hdr)
1949{
1950 __be32 *p;
1951
1952 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1953 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1954 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1955 NFS4_DEVICEID4_SIZE);
1956 *p++ = cpu_to_be32(args->pdev->layout_type);
1957 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1958 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1959}
1960
1961static void
1962encode_layoutget(struct xdr_stream *xdr,
1963 const struct nfs4_layoutget_args *args,
1964 struct compound_hdr *hdr)
1965{
1966 __be32 *p;
1967
1968 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1969 p = reserve_space(xdr, 36);
1970 *p++ = cpu_to_be32(0); /* Signal layout available */
1971 *p++ = cpu_to_be32(args->type);
1972 *p++ = cpu_to_be32(args->range.iomode);
1973 p = xdr_encode_hyper(p, args->range.offset);
1974 p = xdr_encode_hyper(p, args->range.length);
1975 p = xdr_encode_hyper(p, args->minlength);
1976 encode_nfs4_stateid(xdr, &args->stateid);
1977 encode_uint32(xdr, args->maxcount);
1978
1979 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1980 __func__,
1981 args->type,
1982 args->range.iomode,
1983 (unsigned long)args->range.offset,
1984 (unsigned long)args->range.length,
1985 args->maxcount);
1986}
1987
1988static int
1989encode_layoutcommit(struct xdr_stream *xdr,
1990 struct inode *inode,
1991 const struct nfs4_layoutcommit_args *args,
1992 struct compound_hdr *hdr)
1993{
1994 __be32 *p;
1995
1996 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1997 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1998
1999 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2000 p = reserve_space(xdr, 20);
2001 /* Only whole file layouts */
2002 p = xdr_encode_hyper(p, 0); /* offset */
2003 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2004 *p = cpu_to_be32(0); /* reclaim */
2005 encode_nfs4_stateid(xdr, &args->stateid);
2006 p = reserve_space(xdr, 20);
2007 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2008 p = xdr_encode_hyper(p, args->lastbytewritten);
2009 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2010 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2011
2012 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
2013 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
2014 NFS_I(inode)->layout, xdr, args);
2015 else
2016 encode_uint32(xdr, 0); /* no layout-type payload */
2017
2018 return 0;
2019}
2020
2021static void
2022encode_layoutreturn(struct xdr_stream *xdr,
2023 const struct nfs4_layoutreturn_args *args,
2024 struct compound_hdr *hdr)
2025{
2026 __be32 *p;
2027
2028 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2029 p = reserve_space(xdr, 16);
2030 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2031 *p++ = cpu_to_be32(args->layout_type);
2032 *p++ = cpu_to_be32(IOMODE_ANY);
2033 *p = cpu_to_be32(RETURN_FILE);
2034 p = reserve_space(xdr, 16);
2035 p = xdr_encode_hyper(p, 0);
2036 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
2037 spin_lock(&args->inode->i_lock);
2038 encode_nfs4_stateid(xdr, &args->stateid);
2039 spin_unlock(&args->inode->i_lock);
2040 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2041 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2042 NFS_I(args->inode)->layout, xdr, args);
2043 } else
2044 encode_uint32(xdr, 0);
2045}
2046
2047static int
2048encode_secinfo_no_name(struct xdr_stream *xdr,
2049 const struct nfs41_secinfo_no_name_args *args,
2050 struct compound_hdr *hdr)
2051{
2052 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2053 encode_uint32(xdr, args->style);
2054 return 0;
2055}
2056
2057static void encode_test_stateid(struct xdr_stream *xdr,
2058 struct nfs41_test_stateid_args *args,
2059 struct compound_hdr *hdr)
2060{
2061 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2062 encode_uint32(xdr, 1);
2063 encode_nfs4_stateid(xdr, args->stateid);
2064}
2065
2066static void encode_free_stateid(struct xdr_stream *xdr,
2067 struct nfs41_free_stateid_args *args,
2068 struct compound_hdr *hdr)
2069{
2070 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2071 encode_nfs4_stateid(xdr, &args->stateid);
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 struct nfs4_accessargs *args)
2094{
2095 struct compound_hdr hdr = {
2096 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2097 };
2098
2099 encode_compound_hdr(xdr, req, &hdr);
2100 encode_sequence(xdr, &args->seq_args, &hdr);
2101 encode_putfh(xdr, args->fh, &hdr);
2102 encode_access(xdr, args->access, &hdr);
2103 encode_getfattr(xdr, args->bitmask, &hdr);
2104 encode_nops(&hdr);
2105}
2106
2107/*
2108 * Encode LOOKUP request
2109 */
2110static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2111 const struct nfs4_lookup_arg *args)
2112{
2113 struct compound_hdr hdr = {
2114 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2115 };
2116
2117 encode_compound_hdr(xdr, req, &hdr);
2118 encode_sequence(xdr, &args->seq_args, &hdr);
2119 encode_putfh(xdr, args->dir_fh, &hdr);
2120 encode_lookup(xdr, args->name, &hdr);
2121 encode_getfh(xdr, &hdr);
2122 encode_getfattr(xdr, args->bitmask, &hdr);
2123 encode_nops(&hdr);
2124}
2125
2126/*
2127 * Encode LOOKUP_ROOT request
2128 */
2129static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2130 struct xdr_stream *xdr,
2131 const struct nfs4_lookup_root_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_putrootfh(xdr, &hdr);
2140 encode_getfh(xdr, &hdr);
2141 encode_getfattr(xdr, args->bitmask, &hdr);
2142 encode_nops(&hdr);
2143}
2144
2145/*
2146 * Encode REMOVE request
2147 */
2148static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2149 const struct nfs_removeargs *args)
2150{
2151 struct compound_hdr hdr = {
2152 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2153 };
2154
2155 encode_compound_hdr(xdr, req, &hdr);
2156 encode_sequence(xdr, &args->seq_args, &hdr);
2157 encode_putfh(xdr, args->fh, &hdr);
2158 encode_remove(xdr, &args->name, &hdr);
2159 encode_nops(&hdr);
2160}
2161
2162/*
2163 * Encode RENAME request
2164 */
2165static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2166 const struct nfs_renameargs *args)
2167{
2168 struct compound_hdr hdr = {
2169 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2170 };
2171
2172 encode_compound_hdr(xdr, req, &hdr);
2173 encode_sequence(xdr, &args->seq_args, &hdr);
2174 encode_putfh(xdr, args->old_dir, &hdr);
2175 encode_savefh(xdr, &hdr);
2176 encode_putfh(xdr, args->new_dir, &hdr);
2177 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2178 encode_nops(&hdr);
2179}
2180
2181/*
2182 * Encode LINK request
2183 */
2184static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2185 const struct nfs4_link_arg *args)
2186{
2187 struct compound_hdr hdr = {
2188 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2189 };
2190
2191 encode_compound_hdr(xdr, req, &hdr);
2192 encode_sequence(xdr, &args->seq_args, &hdr);
2193 encode_putfh(xdr, args->fh, &hdr);
2194 encode_savefh(xdr, &hdr);
2195 encode_putfh(xdr, args->dir_fh, &hdr);
2196 encode_link(xdr, args->name, &hdr);
2197 encode_restorefh(xdr, &hdr);
2198 encode_getfattr(xdr, args->bitmask, &hdr);
2199 encode_nops(&hdr);
2200}
2201
2202/*
2203 * Encode CREATE request
2204 */
2205static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2206 const struct nfs4_create_arg *args)
2207{
2208 struct compound_hdr hdr = {
2209 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2210 };
2211
2212 encode_compound_hdr(xdr, req, &hdr);
2213 encode_sequence(xdr, &args->seq_args, &hdr);
2214 encode_putfh(xdr, args->dir_fh, &hdr);
2215 encode_create(xdr, args, &hdr);
2216 encode_getfh(xdr, &hdr);
2217 encode_getfattr(xdr, args->bitmask, &hdr);
2218 encode_nops(&hdr);
2219}
2220
2221/*
2222 * Encode SYMLINK request
2223 */
2224static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2225 const struct nfs4_create_arg *args)
2226{
2227 nfs4_xdr_enc_create(req, xdr, args);
2228}
2229
2230/*
2231 * Encode GETATTR request
2232 */
2233static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2234 const struct nfs4_getattr_arg *args)
2235{
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->fh, &hdr);
2243 encode_getfattr(xdr, args->bitmask, &hdr);
2244 encode_nops(&hdr);
2245}
2246
2247/*
2248 * Encode a CLOSE request
2249 */
2250static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2251 struct nfs_closeargs *args)
2252{
2253 struct compound_hdr hdr = {
2254 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2255 };
2256
2257 encode_compound_hdr(xdr, req, &hdr);
2258 encode_sequence(xdr, &args->seq_args, &hdr);
2259 encode_putfh(xdr, args->fh, &hdr);
2260 encode_close(xdr, args, &hdr);
2261 encode_getfattr(xdr, args->bitmask, &hdr);
2262 encode_nops(&hdr);
2263}
2264
2265/*
2266 * Encode an OPEN request
2267 */
2268static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2269 struct nfs_openargs *args)
2270{
2271 struct compound_hdr hdr = {
2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2273 };
2274
2275 encode_compound_hdr(xdr, req, &hdr);
2276 encode_sequence(xdr, &args->seq_args, &hdr);
2277 encode_putfh(xdr, args->fh, &hdr);
2278 encode_open(xdr, args, &hdr);
2279 encode_getfh(xdr, &hdr);
2280 if (args->access)
2281 encode_access(xdr, args->access, &hdr);
2282 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2283 encode_nops(&hdr);
2284}
2285
2286/*
2287 * Encode an OPEN_CONFIRM request
2288 */
2289static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2290 struct xdr_stream *xdr,
2291 struct nfs_open_confirmargs *args)
2292{
2293 struct compound_hdr hdr = {
2294 .nops = 0,
2295 };
2296
2297 encode_compound_hdr(xdr, req, &hdr);
2298 encode_putfh(xdr, args->fh, &hdr);
2299 encode_open_confirm(xdr, args, &hdr);
2300 encode_nops(&hdr);
2301}
2302
2303/*
2304 * Encode an OPEN request with no attributes.
2305 */
2306static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2307 struct xdr_stream *xdr,
2308 struct nfs_openargs *args)
2309{
2310 struct compound_hdr hdr = {
2311 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2312 };
2313
2314 encode_compound_hdr(xdr, req, &hdr);
2315 encode_sequence(xdr, &args->seq_args, &hdr);
2316 encode_putfh(xdr, args->fh, &hdr);
2317 encode_open(xdr, args, &hdr);
2318 if (args->access)
2319 encode_access(xdr, args->access, &hdr);
2320 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2321 encode_nops(&hdr);
2322}
2323
2324/*
2325 * Encode an OPEN_DOWNGRADE request
2326 */
2327static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2328 struct xdr_stream *xdr,
2329 struct nfs_closeargs *args)
2330{
2331 struct compound_hdr hdr = {
2332 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2333 };
2334
2335 encode_compound_hdr(xdr, req, &hdr);
2336 encode_sequence(xdr, &args->seq_args, &hdr);
2337 encode_putfh(xdr, args->fh, &hdr);
2338 encode_open_downgrade(xdr, args, &hdr);
2339 encode_getfattr(xdr, args->bitmask, &hdr);
2340 encode_nops(&hdr);
2341}
2342
2343/*
2344 * Encode a LOCK request
2345 */
2346static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2347 struct nfs_lock_args *args)
2348{
2349 struct compound_hdr hdr = {
2350 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2351 };
2352
2353 encode_compound_hdr(xdr, req, &hdr);
2354 encode_sequence(xdr, &args->seq_args, &hdr);
2355 encode_putfh(xdr, args->fh, &hdr);
2356 encode_lock(xdr, args, &hdr);
2357 encode_nops(&hdr);
2358}
2359
2360/*
2361 * Encode a LOCKT request
2362 */
2363static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2364 struct nfs_lockt_args *args)
2365{
2366 struct compound_hdr hdr = {
2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2368 };
2369
2370 encode_compound_hdr(xdr, req, &hdr);
2371 encode_sequence(xdr, &args->seq_args, &hdr);
2372 encode_putfh(xdr, args->fh, &hdr);
2373 encode_lockt(xdr, args, &hdr);
2374 encode_nops(&hdr);
2375}
2376
2377/*
2378 * Encode a LOCKU request
2379 */
2380static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2381 struct nfs_locku_args *args)
2382{
2383 struct compound_hdr hdr = {
2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2385 };
2386
2387 encode_compound_hdr(xdr, req, &hdr);
2388 encode_sequence(xdr, &args->seq_args, &hdr);
2389 encode_putfh(xdr, args->fh, &hdr);
2390 encode_locku(xdr, args, &hdr);
2391 encode_nops(&hdr);
2392}
2393
2394static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2395 struct xdr_stream *xdr,
2396 struct nfs_release_lockowner_args *args)
2397{
2398 struct compound_hdr hdr = {
2399 .minorversion = 0,
2400 };
2401
2402 encode_compound_hdr(xdr, req, &hdr);
2403 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2404 encode_nops(&hdr);
2405}
2406
2407/*
2408 * Encode a READLINK request
2409 */
2410static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2411 const struct nfs4_readlink *args)
2412{
2413 struct compound_hdr hdr = {
2414 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2415 };
2416
2417 encode_compound_hdr(xdr, req, &hdr);
2418 encode_sequence(xdr, &args->seq_args, &hdr);
2419 encode_putfh(xdr, args->fh, &hdr);
2420 encode_readlink(xdr, args, req, &hdr);
2421
2422 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2423 args->pgbase, args->pglen);
2424 encode_nops(&hdr);
2425}
2426
2427/*
2428 * Encode a READDIR request
2429 */
2430static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2431 const struct nfs4_readdir_arg *args)
2432{
2433 struct compound_hdr hdr = {
2434 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2435 };
2436
2437 encode_compound_hdr(xdr, req, &hdr);
2438 encode_sequence(xdr, &args->seq_args, &hdr);
2439 encode_putfh(xdr, args->fh, &hdr);
2440 encode_readdir(xdr, args, req, &hdr);
2441
2442 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2443 args->pgbase, args->count);
2444 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2445 __func__, hdr.replen << 2, args->pages,
2446 args->pgbase, args->count);
2447 encode_nops(&hdr);
2448}
2449
2450/*
2451 * Encode a READ request
2452 */
2453static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2454 struct nfs_readargs *args)
2455{
2456 struct compound_hdr hdr = {
2457 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2458 };
2459
2460 encode_compound_hdr(xdr, req, &hdr);
2461 encode_sequence(xdr, &args->seq_args, &hdr);
2462 encode_putfh(xdr, args->fh, &hdr);
2463 encode_read(xdr, args, &hdr);
2464
2465 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2466 args->pages, args->pgbase, args->count);
2467 req->rq_rcv_buf.flags |= XDRBUF_READ;
2468 encode_nops(&hdr);
2469}
2470
2471/*
2472 * Encode an SETATTR request
2473 */
2474static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2475 struct nfs_setattrargs *args)
2476{
2477 struct compound_hdr hdr = {
2478 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2479 };
2480
2481 encode_compound_hdr(xdr, req, &hdr);
2482 encode_sequence(xdr, &args->seq_args, &hdr);
2483 encode_putfh(xdr, args->fh, &hdr);
2484 encode_setattr(xdr, args, args->server, &hdr);
2485 encode_getfattr(xdr, args->bitmask, &hdr);
2486 encode_nops(&hdr);
2487}
2488
2489/*
2490 * Encode a GETACL request
2491 */
2492static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2493 struct nfs_getaclargs *args)
2494{
2495 struct compound_hdr hdr = {
2496 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2497 };
2498 uint32_t replen;
2499
2500 encode_compound_hdr(xdr, req, &hdr);
2501 encode_sequence(xdr, &args->seq_args, &hdr);
2502 encode_putfh(xdr, args->fh, &hdr);
2503 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2504 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2505
2506 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2507 args->acl_pages, args->acl_pgbase, args->acl_len);
2508
2509 encode_nops(&hdr);
2510}
2511
2512/*
2513 * Encode a WRITE request
2514 */
2515static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2516 struct nfs_writeargs *args)
2517{
2518 struct compound_hdr hdr = {
2519 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2520 };
2521
2522 encode_compound_hdr(xdr, req, &hdr);
2523 encode_sequence(xdr, &args->seq_args, &hdr);
2524 encode_putfh(xdr, args->fh, &hdr);
2525 encode_write(xdr, args, &hdr);
2526 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2527 if (args->bitmask)
2528 encode_getfattr(xdr, args->bitmask, &hdr);
2529 encode_nops(&hdr);
2530}
2531
2532/*
2533 * a COMMIT request
2534 */
2535static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2536 struct nfs_commitargs *args)
2537{
2538 struct compound_hdr hdr = {
2539 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2540 };
2541
2542 encode_compound_hdr(xdr, req, &hdr);
2543 encode_sequence(xdr, &args->seq_args, &hdr);
2544 encode_putfh(xdr, args->fh, &hdr);
2545 encode_commit(xdr, args, &hdr);
2546 encode_nops(&hdr);
2547}
2548
2549/*
2550 * FSINFO request
2551 */
2552static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2553 struct nfs4_fsinfo_arg *args)
2554{
2555 struct compound_hdr hdr = {
2556 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2557 };
2558
2559 encode_compound_hdr(xdr, req, &hdr);
2560 encode_sequence(xdr, &args->seq_args, &hdr);
2561 encode_putfh(xdr, args->fh, &hdr);
2562 encode_fsinfo(xdr, args->bitmask, &hdr);
2563 encode_nops(&hdr);
2564}
2565
2566/*
2567 * a PATHCONF request
2568 */
2569static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2570 const struct nfs4_pathconf_arg *args)
2571{
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_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2580 &hdr);
2581 encode_nops(&hdr);
2582}
2583
2584/*
2585 * a STATFS request
2586 */
2587static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2588 const struct nfs4_statfs_arg *args)
2589{
2590 struct compound_hdr hdr = {
2591 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2592 };
2593
2594 encode_compound_hdr(xdr, req, &hdr);
2595 encode_sequence(xdr, &args->seq_args, &hdr);
2596 encode_putfh(xdr, args->fh, &hdr);
2597 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2598 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2599 encode_nops(&hdr);
2600}
2601
2602/*
2603 * GETATTR_BITMAP request
2604 */
2605static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2606 struct xdr_stream *xdr,
2607 struct nfs4_server_caps_arg *args)
2608{
2609 struct compound_hdr hdr = {
2610 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2611 };
2612
2613 encode_compound_hdr(xdr, req, &hdr);
2614 encode_sequence(xdr, &args->seq_args, &hdr);
2615 encode_putfh(xdr, args->fhandle, &hdr);
2616 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2617 FATTR4_WORD0_FH_EXPIRE_TYPE|
2618 FATTR4_WORD0_LINK_SUPPORT|
2619 FATTR4_WORD0_SYMLINK_SUPPORT|
2620 FATTR4_WORD0_ACLSUPPORT, &hdr);
2621 encode_nops(&hdr);
2622}
2623
2624/*
2625 * a RENEW request
2626 */
2627static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2628 struct nfs_client *clp)
2629{
2630 struct compound_hdr hdr = {
2631 .nops = 0,
2632 };
2633
2634 encode_compound_hdr(xdr, req, &hdr);
2635 encode_renew(xdr, clp->cl_clientid, &hdr);
2636 encode_nops(&hdr);
2637}
2638
2639/*
2640 * a SETCLIENTID request
2641 */
2642static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2643 struct xdr_stream *xdr,
2644 struct nfs4_setclientid *sc)
2645{
2646 struct compound_hdr hdr = {
2647 .nops = 0,
2648 };
2649
2650 encode_compound_hdr(xdr, req, &hdr);
2651 encode_setclientid(xdr, sc, &hdr);
2652 encode_nops(&hdr);
2653}
2654
2655/*
2656 * a SETCLIENTID_CONFIRM request
2657 */
2658static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2659 struct xdr_stream *xdr,
2660 struct nfs4_setclientid_res *arg)
2661{
2662 struct compound_hdr hdr = {
2663 .nops = 0,
2664 };
2665
2666 encode_compound_hdr(xdr, req, &hdr);
2667 encode_setclientid_confirm(xdr, arg, &hdr);
2668 encode_nops(&hdr);
2669}
2670
2671/*
2672 * DELEGRETURN request
2673 */
2674static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2675 struct xdr_stream *xdr,
2676 const struct nfs4_delegreturnargs *args)
2677{
2678 struct compound_hdr hdr = {
2679 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2680 };
2681
2682 encode_compound_hdr(xdr, req, &hdr);
2683 encode_sequence(xdr, &args->seq_args, &hdr);
2684 encode_putfh(xdr, args->fhandle, &hdr);
2685 encode_getfattr(xdr, args->bitmask, &hdr);
2686 encode_delegreturn(xdr, args->stateid, &hdr);
2687 encode_nops(&hdr);
2688}
2689
2690/*
2691 * Encode FS_LOCATIONS request
2692 */
2693static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2694 struct xdr_stream *xdr,
2695 struct nfs4_fs_locations_arg *args)
2696{
2697 struct compound_hdr hdr = {
2698 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2699 };
2700 uint32_t replen;
2701
2702 encode_compound_hdr(xdr, req, &hdr);
2703 encode_sequence(xdr, &args->seq_args, &hdr);
2704 if (args->migration) {
2705 encode_putfh(xdr, args->fh, &hdr);
2706 replen = hdr.replen;
2707 encode_fs_locations(xdr, args->bitmask, &hdr);
2708 if (args->renew)
2709 encode_renew(xdr, args->clientid, &hdr);
2710 } else {
2711 encode_putfh(xdr, args->dir_fh, &hdr);
2712 encode_lookup(xdr, args->name, &hdr);
2713 replen = hdr.replen;
2714 encode_fs_locations(xdr, args->bitmask, &hdr);
2715 }
2716
2717 /* Set up reply kvec to capture returned fs_locations array. */
2718 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2719 0, PAGE_SIZE);
2720 encode_nops(&hdr);
2721}
2722
2723/*
2724 * Encode SECINFO request
2725 */
2726static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2727 struct xdr_stream *xdr,
2728 struct nfs4_secinfo_arg *args)
2729{
2730 struct compound_hdr hdr = {
2731 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2732 };
2733
2734 encode_compound_hdr(xdr, req, &hdr);
2735 encode_sequence(xdr, &args->seq_args, &hdr);
2736 encode_putfh(xdr, args->dir_fh, &hdr);
2737 encode_secinfo(xdr, args->name, &hdr);
2738 encode_nops(&hdr);
2739}
2740
2741/*
2742 * Encode FSID_PRESENT request
2743 */
2744static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2745 struct xdr_stream *xdr,
2746 struct nfs4_fsid_present_arg *args)
2747{
2748 struct compound_hdr hdr = {
2749 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2750 };
2751
2752 encode_compound_hdr(xdr, req, &hdr);
2753 encode_sequence(xdr, &args->seq_args, &hdr);
2754 encode_putfh(xdr, args->fh, &hdr);
2755 encode_getfh(xdr, &hdr);
2756 if (args->renew)
2757 encode_renew(xdr, args->clientid, &hdr);
2758 encode_nops(&hdr);
2759}
2760
2761#if defined(CONFIG_NFS_V4_1)
2762/*
2763 * BIND_CONN_TO_SESSION request
2764 */
2765static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2766 struct xdr_stream *xdr,
2767 struct nfs_client *clp)
2768{
2769 struct compound_hdr hdr = {
2770 .minorversion = clp->cl_mvops->minor_version,
2771 };
2772
2773 encode_compound_hdr(xdr, req, &hdr);
2774 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2775 encode_nops(&hdr);
2776}
2777
2778/*
2779 * EXCHANGE_ID request
2780 */
2781static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2782 struct xdr_stream *xdr,
2783 struct nfs41_exchange_id_args *args)
2784{
2785 struct compound_hdr hdr = {
2786 .minorversion = args->client->cl_mvops->minor_version,
2787 };
2788
2789 encode_compound_hdr(xdr, req, &hdr);
2790 encode_exchange_id(xdr, args, &hdr);
2791 encode_nops(&hdr);
2792}
2793
2794/*
2795 * a CREATE_SESSION request
2796 */
2797static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2798 struct xdr_stream *xdr,
2799 struct nfs41_create_session_args *args)
2800{
2801 struct compound_hdr hdr = {
2802 .minorversion = args->client->cl_mvops->minor_version,
2803 };
2804
2805 encode_compound_hdr(xdr, req, &hdr);
2806 encode_create_session(xdr, args, &hdr);
2807 encode_nops(&hdr);
2808}
2809
2810/*
2811 * a DESTROY_SESSION request
2812 */
2813static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2814 struct xdr_stream *xdr,
2815 struct nfs4_session *session)
2816{
2817 struct compound_hdr hdr = {
2818 .minorversion = session->clp->cl_mvops->minor_version,
2819 };
2820
2821 encode_compound_hdr(xdr, req, &hdr);
2822 encode_destroy_session(xdr, session, &hdr);
2823 encode_nops(&hdr);
2824}
2825
2826/*
2827 * a DESTROY_CLIENTID request
2828 */
2829static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2830 struct xdr_stream *xdr,
2831 struct nfs_client *clp)
2832{
2833 struct compound_hdr hdr = {
2834 .minorversion = clp->cl_mvops->minor_version,
2835 };
2836
2837 encode_compound_hdr(xdr, req, &hdr);
2838 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2839 encode_nops(&hdr);
2840}
2841
2842/*
2843 * a SEQUENCE request
2844 */
2845static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2846 struct nfs4_sequence_args *args)
2847{
2848 struct compound_hdr hdr = {
2849 .minorversion = nfs4_xdr_minorversion(args),
2850 };
2851
2852 encode_compound_hdr(xdr, req, &hdr);
2853 encode_sequence(xdr, args, &hdr);
2854 encode_nops(&hdr);
2855}
2856
2857/*
2858 * a GET_LEASE_TIME request
2859 */
2860static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2861 struct xdr_stream *xdr,
2862 struct nfs4_get_lease_time_args *args)
2863{
2864 struct compound_hdr hdr = {
2865 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2866 };
2867 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2868
2869 encode_compound_hdr(xdr, req, &hdr);
2870 encode_sequence(xdr, &args->la_seq_args, &hdr);
2871 encode_putrootfh(xdr, &hdr);
2872 encode_fsinfo(xdr, lease_bitmap, &hdr);
2873 encode_nops(&hdr);
2874}
2875
2876/*
2877 * a RECLAIM_COMPLETE request
2878 */
2879static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2880 struct xdr_stream *xdr,
2881 struct nfs41_reclaim_complete_args *args)
2882{
2883 struct compound_hdr hdr = {
2884 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2885 };
2886
2887 encode_compound_hdr(xdr, req, &hdr);
2888 encode_sequence(xdr, &args->seq_args, &hdr);
2889 encode_reclaim_complete(xdr, args, &hdr);
2890 encode_nops(&hdr);
2891}
2892
2893/*
2894 * Encode GETDEVICELIST request
2895 */
2896static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2897 struct xdr_stream *xdr,
2898 struct nfs4_getdevicelist_args *args)
2899{
2900 struct compound_hdr hdr = {
2901 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2902 };
2903
2904 encode_compound_hdr(xdr, req, &hdr);
2905 encode_sequence(xdr, &args->seq_args, &hdr);
2906 encode_putfh(xdr, args->fh, &hdr);
2907 encode_getdevicelist(xdr, args, &hdr);
2908 encode_nops(&hdr);
2909}
2910
2911/*
2912 * Encode GETDEVICEINFO request
2913 */
2914static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2915 struct xdr_stream *xdr,
2916 struct nfs4_getdeviceinfo_args *args)
2917{
2918 struct compound_hdr hdr = {
2919 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2920 };
2921
2922 encode_compound_hdr(xdr, req, &hdr);
2923 encode_sequence(xdr, &args->seq_args, &hdr);
2924 encode_getdeviceinfo(xdr, args, &hdr);
2925
2926 /* set up reply kvec. Subtract notification bitmap max size (2)
2927 * so that notification bitmap is put in xdr_buf tail */
2928 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2929 args->pdev->pages, args->pdev->pgbase,
2930 args->pdev->pglen);
2931
2932 encode_nops(&hdr);
2933}
2934
2935/*
2936 * Encode LAYOUTGET request
2937 */
2938static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2939 struct xdr_stream *xdr,
2940 struct nfs4_layoutget_args *args)
2941{
2942 struct compound_hdr hdr = {
2943 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2944 };
2945
2946 encode_compound_hdr(xdr, req, &hdr);
2947 encode_sequence(xdr, &args->seq_args, &hdr);
2948 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2949 encode_layoutget(xdr, args, &hdr);
2950
2951 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2952 args->layout.pages, 0, args->layout.pglen);
2953
2954 encode_nops(&hdr);
2955}
2956
2957/*
2958 * Encode LAYOUTCOMMIT request
2959 */
2960static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2961 struct xdr_stream *xdr,
2962 struct nfs4_layoutcommit_args *args)
2963{
2964 struct nfs4_layoutcommit_data *data =
2965 container_of(args, struct nfs4_layoutcommit_data, args);
2966 struct compound_hdr hdr = {
2967 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2968 };
2969
2970 encode_compound_hdr(xdr, req, &hdr);
2971 encode_sequence(xdr, &args->seq_args, &hdr);
2972 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2973 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2974 encode_getfattr(xdr, args->bitmask, &hdr);
2975 encode_nops(&hdr);
2976}
2977
2978/*
2979 * Encode LAYOUTRETURN request
2980 */
2981static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2982 struct xdr_stream *xdr,
2983 struct nfs4_layoutreturn_args *args)
2984{
2985 struct compound_hdr hdr = {
2986 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2987 };
2988
2989 encode_compound_hdr(xdr, req, &hdr);
2990 encode_sequence(xdr, &args->seq_args, &hdr);
2991 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2992 encode_layoutreturn(xdr, args, &hdr);
2993 encode_nops(&hdr);
2994}
2995
2996/*
2997 * Encode SECINFO_NO_NAME request
2998 */
2999static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3000 struct xdr_stream *xdr,
3001 struct nfs41_secinfo_no_name_args *args)
3002{
3003 struct compound_hdr hdr = {
3004 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3005 };
3006
3007 encode_compound_hdr(xdr, req, &hdr);
3008 encode_sequence(xdr, &args->seq_args, &hdr);
3009 encode_putrootfh(xdr, &hdr);
3010 encode_secinfo_no_name(xdr, args, &hdr);
3011 encode_nops(&hdr);
3012 return 0;
3013}
3014
3015/*
3016 * Encode TEST_STATEID request
3017 */
3018static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3019 struct xdr_stream *xdr,
3020 struct nfs41_test_stateid_args *args)
3021{
3022 struct compound_hdr hdr = {
3023 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3024 };
3025
3026 encode_compound_hdr(xdr, req, &hdr);
3027 encode_sequence(xdr, &args->seq_args, &hdr);
3028 encode_test_stateid(xdr, args, &hdr);
3029 encode_nops(&hdr);
3030}
3031
3032/*
3033 * Encode FREE_STATEID request
3034 */
3035static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3036 struct xdr_stream *xdr,
3037 struct nfs41_free_stateid_args *args)
3038{
3039 struct compound_hdr hdr = {
3040 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3041 };
3042
3043 encode_compound_hdr(xdr, req, &hdr);
3044 encode_sequence(xdr, &args->seq_args, &hdr);
3045 encode_free_stateid(xdr, args, &hdr);
3046 encode_nops(&hdr);
3047}
3048#endif /* CONFIG_NFS_V4_1 */
3049
3050static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3051{
3052 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3053 "Remaining buffer length is %tu words.\n",
3054 func, xdr->end - xdr->p);
3055}
3056
3057static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3058{
3059 __be32 *p;
3060
3061 p = xdr_inline_decode(xdr, 4);
3062 if (unlikely(!p))
3063 goto out_overflow;
3064 *len = be32_to_cpup(p);
3065 p = xdr_inline_decode(xdr, *len);
3066 if (unlikely(!p))
3067 goto out_overflow;
3068 *string = (char *)p;
3069 return 0;
3070out_overflow:
3071 print_overflow_msg(__func__, xdr);
3072 return -EIO;
3073}
3074
3075static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3076{
3077 __be32 *p;
3078
3079 p = xdr_inline_decode(xdr, 8);
3080 if (unlikely(!p))
3081 goto out_overflow;
3082 hdr->status = be32_to_cpup(p++);
3083 hdr->taglen = be32_to_cpup(p);
3084
3085 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3086 if (unlikely(!p))
3087 goto out_overflow;
3088 hdr->tag = (char *)p;
3089 p += XDR_QUADLEN(hdr->taglen);
3090 hdr->nops = be32_to_cpup(p);
3091 if (unlikely(hdr->nops < 1))
3092 return nfs4_stat_to_errno(hdr->status);
3093 return 0;
3094out_overflow:
3095 print_overflow_msg(__func__, xdr);
3096 return -EIO;
3097}
3098
3099static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3100 int *nfs_retval)
3101{
3102 __be32 *p;
3103 uint32_t opnum;
3104 int32_t nfserr;
3105
3106 p = xdr_inline_decode(xdr, 8);
3107 if (unlikely(!p))
3108 goto out_overflow;
3109 opnum = be32_to_cpup(p++);
3110 if (unlikely(opnum != expected))
3111 goto out_bad_operation;
3112 nfserr = be32_to_cpup(p);
3113 if (nfserr == NFS_OK)
3114 *nfs_retval = 0;
3115 else
3116 *nfs_retval = nfs4_stat_to_errno(nfserr);
3117 return true;
3118out_bad_operation:
3119 dprintk("nfs: Server returned operation"
3120 " %d but we issued a request for %d\n",
3121 opnum, expected);
3122 *nfs_retval = -EREMOTEIO;
3123 return false;
3124out_overflow:
3125 print_overflow_msg(__func__, xdr);
3126 *nfs_retval = -EIO;
3127 return false;
3128}
3129
3130static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3131{
3132 int retval;
3133
3134 __decode_op_hdr(xdr, expected, &retval);
3135 return retval;
3136}
3137
3138/* Dummy routine */
3139static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3140{
3141 __be32 *p;
3142 unsigned int strlen;
3143 char *str;
3144
3145 p = xdr_inline_decode(xdr, 12);
3146 if (likely(p))
3147 return decode_opaque_inline(xdr, &strlen, &str);
3148 print_overflow_msg(__func__, xdr);
3149 return -EIO;
3150}
3151
3152static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3153{
3154 uint32_t bmlen;
3155 __be32 *p;
3156
3157 p = xdr_inline_decode(xdr, 4);
3158 if (unlikely(!p))
3159 goto out_overflow;
3160 bmlen = be32_to_cpup(p);
3161
3162 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3163 p = xdr_inline_decode(xdr, (bmlen << 2));
3164 if (unlikely(!p))
3165 goto out_overflow;
3166 if (bmlen > 0) {
3167 bitmap[0] = be32_to_cpup(p++);
3168 if (bmlen > 1) {
3169 bitmap[1] = be32_to_cpup(p++);
3170 if (bmlen > 2)
3171 bitmap[2] = be32_to_cpup(p);
3172 }
3173 }
3174 return 0;
3175out_overflow:
3176 print_overflow_msg(__func__, xdr);
3177 return -EIO;
3178}
3179
3180static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3181{
3182 __be32 *p;
3183
3184 p = xdr_inline_decode(xdr, 4);
3185 if (unlikely(!p))
3186 goto out_overflow;
3187 *attrlen = be32_to_cpup(p);
3188 *savep = xdr_stream_pos(xdr);
3189 return 0;
3190out_overflow:
3191 print_overflow_msg(__func__, xdr);
3192 return -EIO;
3193}
3194
3195static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3196{
3197 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3198 int ret;
3199 ret = decode_attr_bitmap(xdr, bitmask);
3200 if (unlikely(ret < 0))
3201 return ret;
3202 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3203 } else
3204 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3205 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3206 bitmask[0], bitmask[1], bitmask[2]);
3207 return 0;
3208}
3209
3210static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3211{
3212 __be32 *p;
3213 int ret = 0;
3214
3215 *type = 0;
3216 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3217 return -EIO;
3218 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3219 p = xdr_inline_decode(xdr, 4);
3220 if (unlikely(!p))
3221 goto out_overflow;
3222 *type = be32_to_cpup(p);
3223 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3224 dprintk("%s: bad type %d\n", __func__, *type);
3225 return -EIO;
3226 }
3227 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3228 ret = NFS_ATTR_FATTR_TYPE;
3229 }
3230 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3231 return ret;
3232out_overflow:
3233 print_overflow_msg(__func__, xdr);
3234 return -EIO;
3235}
3236
3237static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3238 uint32_t *bitmap, uint32_t *type)
3239{
3240 __be32 *p;
3241
3242 *type = 0;
3243 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3244 return -EIO;
3245 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3246 p = xdr_inline_decode(xdr, 4);
3247 if (unlikely(!p))
3248 goto out_overflow;
3249 *type = be32_to_cpup(p);
3250 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3251 }
3252 dprintk("%s: expire type=0x%x\n", __func__, *type);
3253 return 0;
3254out_overflow:
3255 print_overflow_msg(__func__, xdr);
3256 return -EIO;
3257}
3258
3259static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3260{
3261 __be32 *p;
3262 int ret = 0;
3263
3264 *change = 0;
3265 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3266 return -EIO;
3267 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3268 p = xdr_inline_decode(xdr, 8);
3269 if (unlikely(!p))
3270 goto out_overflow;
3271 xdr_decode_hyper(p, change);
3272 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3273 ret = NFS_ATTR_FATTR_CHANGE;
3274 }
3275 dprintk("%s: change attribute=%Lu\n", __func__,
3276 (unsigned long long)*change);
3277 return ret;
3278out_overflow:
3279 print_overflow_msg(__func__, xdr);
3280 return -EIO;
3281}
3282
3283static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3284{
3285 __be32 *p;
3286 int ret = 0;
3287
3288 *size = 0;
3289 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3290 return -EIO;
3291 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3292 p = xdr_inline_decode(xdr, 8);
3293 if (unlikely(!p))
3294 goto out_overflow;
3295 xdr_decode_hyper(p, size);
3296 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3297 ret = NFS_ATTR_FATTR_SIZE;
3298 }
3299 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3300 return ret;
3301out_overflow:
3302 print_overflow_msg(__func__, xdr);
3303 return -EIO;
3304}
3305
3306static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3307{
3308 __be32 *p;
3309
3310 *res = 0;
3311 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3312 return -EIO;
3313 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3314 p = xdr_inline_decode(xdr, 4);
3315 if (unlikely(!p))
3316 goto out_overflow;
3317 *res = be32_to_cpup(p);
3318 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3319 }
3320 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3321 return 0;
3322out_overflow:
3323 print_overflow_msg(__func__, xdr);
3324 return -EIO;
3325}
3326
3327static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3328{
3329 __be32 *p;
3330
3331 *res = 0;
3332 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3333 return -EIO;
3334 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3335 p = xdr_inline_decode(xdr, 4);
3336 if (unlikely(!p))
3337 goto out_overflow;
3338 *res = be32_to_cpup(p);
3339 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3340 }
3341 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3342 return 0;
3343out_overflow:
3344 print_overflow_msg(__func__, xdr);
3345 return -EIO;
3346}
3347
3348static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3349{
3350 __be32 *p;
3351 int ret = 0;
3352
3353 fsid->major = 0;
3354 fsid->minor = 0;
3355 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3356 return -EIO;
3357 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3358 p = xdr_inline_decode(xdr, 16);
3359 if (unlikely(!p))
3360 goto out_overflow;
3361 p = xdr_decode_hyper(p, &fsid->major);
3362 xdr_decode_hyper(p, &fsid->minor);
3363 bitmap[0] &= ~FATTR4_WORD0_FSID;
3364 ret = NFS_ATTR_FATTR_FSID;
3365 }
3366 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3367 (unsigned long long)fsid->major,
3368 (unsigned long long)fsid->minor);
3369 return ret;
3370out_overflow:
3371 print_overflow_msg(__func__, xdr);
3372 return -EIO;
3373}
3374
3375static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3376{
3377 __be32 *p;
3378
3379 *res = 60;
3380 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3381 return -EIO;
3382 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3383 p = xdr_inline_decode(xdr, 4);
3384 if (unlikely(!p))
3385 goto out_overflow;
3386 *res = be32_to_cpup(p);
3387 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3388 }
3389 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3390 return 0;
3391out_overflow:
3392 print_overflow_msg(__func__, xdr);
3393 return -EIO;
3394}
3395
3396static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3397{
3398 __be32 *p;
3399
3400 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3401 return -EIO;
3402 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3403 p = xdr_inline_decode(xdr, 4);
3404 if (unlikely(!p))
3405 goto out_overflow;
3406 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3407 *res = -be32_to_cpup(p);
3408 }
3409 return 0;
3410out_overflow:
3411 print_overflow_msg(__func__, xdr);
3412 return -EIO;
3413}
3414
3415static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3416{
3417 __be32 *p;
3418 int len;
3419
3420 if (fh != NULL)
3421 memset(fh, 0, sizeof(*fh));
3422
3423 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3424 return -EIO;
3425 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3426 p = xdr_inline_decode(xdr, 4);
3427 if (unlikely(!p))
3428 goto out_overflow;
3429 len = be32_to_cpup(p);
3430 if (len > NFS4_FHSIZE)
3431 return -EIO;
3432 p = xdr_inline_decode(xdr, len);
3433 if (unlikely(!p))
3434 goto out_overflow;
3435 if (fh != NULL) {
3436 memcpy(fh->data, p, len);
3437 fh->size = len;
3438 }
3439 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3440 }
3441 return 0;
3442out_overflow:
3443 print_overflow_msg(__func__, xdr);
3444 return -EIO;
3445}
3446
3447static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3448{
3449 __be32 *p;
3450
3451 *res = 0;
3452 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3453 return -EIO;
3454 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3455 p = xdr_inline_decode(xdr, 4);
3456 if (unlikely(!p))
3457 goto out_overflow;
3458 *res = be32_to_cpup(p);
3459 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3460 }
3461 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3462 return 0;
3463out_overflow:
3464 print_overflow_msg(__func__, xdr);
3465 return -EIO;
3466}
3467
3468static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3469{
3470 __be32 *p;
3471 int ret = 0;
3472
3473 *fileid = 0;
3474 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3475 return -EIO;
3476 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3477 p = xdr_inline_decode(xdr, 8);
3478 if (unlikely(!p))
3479 goto out_overflow;
3480 xdr_decode_hyper(p, fileid);
3481 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3482 ret = NFS_ATTR_FATTR_FILEID;
3483 }
3484 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3485 return ret;
3486out_overflow:
3487 print_overflow_msg(__func__, xdr);
3488 return -EIO;
3489}
3490
3491static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3492{
3493 __be32 *p;
3494 int ret = 0;
3495
3496 *fileid = 0;
3497 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3498 return -EIO;
3499 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3500 p = xdr_inline_decode(xdr, 8);
3501 if (unlikely(!p))
3502 goto out_overflow;
3503 xdr_decode_hyper(p, fileid);
3504 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3505 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3506 }
3507 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3508 return ret;
3509out_overflow:
3510 print_overflow_msg(__func__, xdr);
3511 return -EIO;
3512}
3513
3514static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3515{
3516 __be32 *p;
3517 int status = 0;
3518
3519 *res = 0;
3520 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3521 return -EIO;
3522 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3523 p = xdr_inline_decode(xdr, 8);
3524 if (unlikely(!p))
3525 goto out_overflow;
3526 xdr_decode_hyper(p, res);
3527 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3528 }
3529 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3530 return status;
3531out_overflow:
3532 print_overflow_msg(__func__, xdr);
3533 return -EIO;
3534}
3535
3536static int decode_attr_files_free(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_FREE - 1U)))
3543 return -EIO;
3544 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
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_FREE;
3550 }
3551 dprintk("%s: files free=%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_total(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_TOTAL - 1U)))
3565 return -EIO;
3566 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
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_TOTAL;
3572 }
3573 dprintk("%s: files total=%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_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3581{
3582 u32 n;
3583 __be32 *p;
3584 int status = 0;
3585
3586 p = xdr_inline_decode(xdr, 4);
3587 if (unlikely(!p))
3588 goto out_overflow;
3589 n = be32_to_cpup(p);
3590 if (n == 0)
3591 goto root_path;
3592 dprintk("pathname4: ");
3593 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3594 dprintk("cannot parse %d components in path\n", n);
3595 goto out_eio;
3596 }
3597 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3598 struct nfs4_string *component = &path->components[path->ncomponents];
3599 status = decode_opaque_inline(xdr, &component->len, &component->data);
3600 if (unlikely(status != 0))
3601 goto out_eio;
3602 ifdebug (XDR)
3603 pr_cont("%s%.*s ",
3604 (path->ncomponents != n ? "/ " : ""),
3605 component->len, component->data);
3606 }
3607out:
3608 return status;
3609root_path:
3610/* a root pathname is sent as a zero component4 */
3611 path->ncomponents = 1;
3612 path->components[0].len=0;
3613 path->components[0].data=NULL;
3614 dprintk("pathname4: /\n");
3615 goto out;
3616out_eio:
3617 dprintk(" status %d", status);
3618 status = -EIO;
3619 goto out;
3620out_overflow:
3621 print_overflow_msg(__func__, xdr);
3622 return -EIO;
3623}
3624
3625static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3626{
3627 int n;
3628 __be32 *p;
3629 int status = -EIO;
3630
3631 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3632 goto out;
3633 status = 0;
3634 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3635 goto out;
3636 status = -EIO;
3637 /* Ignore borken servers that return unrequested attrs */
3638 if (unlikely(res == NULL))
3639 goto out;
3640 dprintk("%s: fsroot:\n", __func__);
3641 status = decode_pathname(xdr, &res->fs_path);
3642 if (unlikely(status != 0))
3643 goto out;
3644 p = xdr_inline_decode(xdr, 4);
3645 if (unlikely(!p))
3646 goto out_overflow;
3647 n = be32_to_cpup(p);
3648 if (n <= 0)
3649 goto out_eio;
3650 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3651 u32 m;
3652 struct nfs4_fs_location *loc;
3653
3654 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3655 break;
3656 loc = &res->locations[res->nlocations];
3657 p = xdr_inline_decode(xdr, 4);
3658 if (unlikely(!p))
3659 goto out_overflow;
3660 m = be32_to_cpup(p);
3661
3662 dprintk("%s: servers:\n", __func__);
3663 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3664 struct nfs4_string *server;
3665
3666 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3667 unsigned int i;
3668 dprintk("%s: using first %u of %u servers "
3669 "returned for location %u\n",
3670 __func__,
3671 NFS4_FS_LOCATION_MAXSERVERS,
3672 m, res->nlocations);
3673 for (i = loc->nservers; i < m; i++) {
3674 unsigned int len;
3675 char *data;
3676 status = decode_opaque_inline(xdr, &len, &data);
3677 if (unlikely(status != 0))
3678 goto out_eio;
3679 }
3680 break;
3681 }
3682 server = &loc->servers[loc->nservers];
3683 status = decode_opaque_inline(xdr, &server->len, &server->data);
3684 if (unlikely(status != 0))
3685 goto out_eio;
3686 dprintk("%s ", server->data);
3687 }
3688 status = decode_pathname(xdr, &loc->rootpath);
3689 if (unlikely(status != 0))
3690 goto out_eio;
3691 }
3692 if (res->nlocations != 0)
3693 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3694out:
3695 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3696 return status;
3697out_overflow:
3698 print_overflow_msg(__func__, xdr);
3699out_eio:
3700 status = -EIO;
3701 goto out;
3702}
3703
3704static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3705{
3706 __be32 *p;
3707 int status = 0;
3708
3709 *res = 0;
3710 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3711 return -EIO;
3712 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3713 p = xdr_inline_decode(xdr, 8);
3714 if (unlikely(!p))
3715 goto out_overflow;
3716 xdr_decode_hyper(p, res);
3717 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3718 }
3719 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3720 return status;
3721out_overflow:
3722 print_overflow_msg(__func__, xdr);
3723 return -EIO;
3724}
3725
3726static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3727{
3728 __be32 *p;
3729 int status = 0;
3730
3731 *maxlink = 1;
3732 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3733 return -EIO;
3734 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3735 p = xdr_inline_decode(xdr, 4);
3736 if (unlikely(!p))
3737 goto out_overflow;
3738 *maxlink = be32_to_cpup(p);
3739 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3740 }
3741 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3742 return status;
3743out_overflow:
3744 print_overflow_msg(__func__, xdr);
3745 return -EIO;
3746}
3747
3748static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3749{
3750 __be32 *p;
3751 int status = 0;
3752
3753 *maxname = 1024;
3754 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3755 return -EIO;
3756 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3757 p = xdr_inline_decode(xdr, 4);
3758 if (unlikely(!p))
3759 goto out_overflow;
3760 *maxname = be32_to_cpup(p);
3761 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3762 }
3763 dprintk("%s: maxname=%u\n", __func__, *maxname);
3764 return status;
3765out_overflow:
3766 print_overflow_msg(__func__, xdr);
3767 return -EIO;
3768}
3769
3770static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3771{
3772 __be32 *p;
3773 int status = 0;
3774
3775 *res = 1024;
3776 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3777 return -EIO;
3778 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3779 uint64_t maxread;
3780 p = xdr_inline_decode(xdr, 8);
3781 if (unlikely(!p))
3782 goto out_overflow;
3783 xdr_decode_hyper(p, &maxread);
3784 if (maxread > 0x7FFFFFFF)
3785 maxread = 0x7FFFFFFF;
3786 *res = (uint32_t)maxread;
3787 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3788 }
3789 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3790 return status;
3791out_overflow:
3792 print_overflow_msg(__func__, xdr);
3793 return -EIO;
3794}
3795
3796static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3797{
3798 __be32 *p;
3799 int status = 0;
3800
3801 *res = 1024;
3802 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3803 return -EIO;
3804 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3805 uint64_t maxwrite;
3806 p = xdr_inline_decode(xdr, 8);
3807 if (unlikely(!p))
3808 goto out_overflow;
3809 xdr_decode_hyper(p, &maxwrite);
3810 if (maxwrite > 0x7FFFFFFF)
3811 maxwrite = 0x7FFFFFFF;
3812 *res = (uint32_t)maxwrite;
3813 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3814 }
3815 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3816 return status;
3817out_overflow:
3818 print_overflow_msg(__func__, xdr);
3819 return -EIO;
3820}
3821
3822static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3823{
3824 uint32_t tmp;
3825 __be32 *p;
3826 int ret = 0;
3827
3828 *mode = 0;
3829 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3830 return -EIO;
3831 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3832 p = xdr_inline_decode(xdr, 4);
3833 if (unlikely(!p))
3834 goto out_overflow;
3835 tmp = be32_to_cpup(p);
3836 *mode = tmp & ~S_IFMT;
3837 bitmap[1] &= ~FATTR4_WORD1_MODE;
3838 ret = NFS_ATTR_FATTR_MODE;
3839 }
3840 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3841 return ret;
3842out_overflow:
3843 print_overflow_msg(__func__, xdr);
3844 return -EIO;
3845}
3846
3847static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3848{
3849 __be32 *p;
3850 int ret = 0;
3851
3852 *nlink = 1;
3853 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3854 return -EIO;
3855 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3856 p = xdr_inline_decode(xdr, 4);
3857 if (unlikely(!p))
3858 goto out_overflow;
3859 *nlink = be32_to_cpup(p);
3860 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3861 ret = NFS_ATTR_FATTR_NLINK;
3862 }
3863 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3864 return ret;
3865out_overflow:
3866 print_overflow_msg(__func__, xdr);
3867 return -EIO;
3868}
3869
3870static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3871 const struct nfs_server *server, kuid_t *uid,
3872 struct nfs4_string *owner_name)
3873{
3874 uint32_t len;
3875 __be32 *p;
3876 int ret = 0;
3877
3878 *uid = make_kuid(&init_user_ns, -2);
3879 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3880 return -EIO;
3881 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3882 p = xdr_inline_decode(xdr, 4);
3883 if (unlikely(!p))
3884 goto out_overflow;
3885 len = be32_to_cpup(p);
3886 p = xdr_inline_decode(xdr, len);
3887 if (unlikely(!p))
3888 goto out_overflow;
3889 if (owner_name != NULL) {
3890 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3891 if (owner_name->data != NULL) {
3892 owner_name->len = len;
3893 ret = NFS_ATTR_FATTR_OWNER_NAME;
3894 }
3895 } else if (len < XDR_MAX_NETOBJ) {
3896 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3897 ret = NFS_ATTR_FATTR_OWNER;
3898 else
3899 dprintk("%s: nfs_map_name_to_uid failed!\n",
3900 __func__);
3901 } else
3902 dprintk("%s: name too long (%u)!\n",
3903 __func__, len);
3904 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3905 }
3906 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3907 return ret;
3908out_overflow:
3909 print_overflow_msg(__func__, xdr);
3910 return -EIO;
3911}
3912
3913static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3914 const struct nfs_server *server, kgid_t *gid,
3915 struct nfs4_string *group_name)
3916{
3917 uint32_t len;
3918 __be32 *p;
3919 int ret = 0;
3920
3921 *gid = make_kgid(&init_user_ns, -2);
3922 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3923 return -EIO;
3924 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3925 p = xdr_inline_decode(xdr, 4);
3926 if (unlikely(!p))
3927 goto out_overflow;
3928 len = be32_to_cpup(p);
3929 p = xdr_inline_decode(xdr, len);
3930 if (unlikely(!p))
3931 goto out_overflow;
3932 if (group_name != NULL) {
3933 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3934 if (group_name->data != NULL) {
3935 group_name->len = len;
3936 ret = NFS_ATTR_FATTR_GROUP_NAME;
3937 }
3938 } else if (len < XDR_MAX_NETOBJ) {
3939 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3940 ret = NFS_ATTR_FATTR_GROUP;
3941 else
3942 dprintk("%s: nfs_map_group_to_gid failed!\n",
3943 __func__);
3944 } else
3945 dprintk("%s: name too long (%u)!\n",
3946 __func__, len);
3947 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3948 }
3949 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3950 return ret;
3951out_overflow:
3952 print_overflow_msg(__func__, xdr);
3953 return -EIO;
3954}
3955
3956static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3957{
3958 uint32_t major = 0, minor = 0;
3959 __be32 *p;
3960 int ret = 0;
3961
3962 *rdev = MKDEV(0,0);
3963 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3964 return -EIO;
3965 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3966 dev_t tmp;
3967
3968 p = xdr_inline_decode(xdr, 8);
3969 if (unlikely(!p))
3970 goto out_overflow;
3971 major = be32_to_cpup(p++);
3972 minor = be32_to_cpup(p);
3973 tmp = MKDEV(major, minor);
3974 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3975 *rdev = tmp;
3976 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3977 ret = NFS_ATTR_FATTR_RDEV;
3978 }
3979 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3980 return ret;
3981out_overflow:
3982 print_overflow_msg(__func__, xdr);
3983 return -EIO;
3984}
3985
3986static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3987{
3988 __be32 *p;
3989 int status = 0;
3990
3991 *res = 0;
3992 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3993 return -EIO;
3994 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3995 p = xdr_inline_decode(xdr, 8);
3996 if (unlikely(!p))
3997 goto out_overflow;
3998 xdr_decode_hyper(p, res);
3999 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4000 }
4001 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4002 return status;
4003out_overflow:
4004 print_overflow_msg(__func__, xdr);
4005 return -EIO;
4006}
4007
4008static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4009{
4010 __be32 *p;
4011 int status = 0;
4012
4013 *res = 0;
4014 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4015 return -EIO;
4016 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4017 p = xdr_inline_decode(xdr, 8);
4018 if (unlikely(!p))
4019 goto out_overflow;
4020 xdr_decode_hyper(p, res);
4021 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4022 }
4023 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4024 return status;
4025out_overflow:
4026 print_overflow_msg(__func__, xdr);
4027 return -EIO;
4028}
4029
4030static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4031{
4032 __be32 *p;
4033 int status = 0;
4034
4035 *res = 0;
4036 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4037 return -EIO;
4038 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4039 p = xdr_inline_decode(xdr, 8);
4040 if (unlikely(!p))
4041 goto out_overflow;
4042 xdr_decode_hyper(p, res);
4043 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4044 }
4045 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4046 return status;
4047out_overflow:
4048 print_overflow_msg(__func__, xdr);
4049 return -EIO;
4050}
4051
4052static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4053{
4054 __be32 *p;
4055 int ret = 0;
4056
4057 *used = 0;
4058 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4059 return -EIO;
4060 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4061 p = xdr_inline_decode(xdr, 8);
4062 if (unlikely(!p))
4063 goto out_overflow;
4064 xdr_decode_hyper(p, used);
4065 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4066 ret = NFS_ATTR_FATTR_SPACE_USED;
4067 }
4068 dprintk("%s: space used=%Lu\n", __func__,
4069 (unsigned long long)*used);
4070 return ret;
4071out_overflow:
4072 print_overflow_msg(__func__, xdr);
4073 return -EIO;
4074}
4075
4076static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4077{
4078 __be32 *p;
4079 uint64_t sec;
4080 uint32_t nsec;
4081
4082 p = xdr_inline_decode(xdr, 12);
4083 if (unlikely(!p))
4084 goto out_overflow;
4085 p = xdr_decode_hyper(p, &sec);
4086 nsec = be32_to_cpup(p);
4087 time->tv_sec = (time_t)sec;
4088 time->tv_nsec = (long)nsec;
4089 return 0;
4090out_overflow:
4091 print_overflow_msg(__func__, xdr);
4092 return -EIO;
4093}
4094
4095static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4096{
4097 int status = 0;
4098
4099 time->tv_sec = 0;
4100 time->tv_nsec = 0;
4101 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4102 return -EIO;
4103 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4104 status = decode_attr_time(xdr, time);
4105 if (status == 0)
4106 status = NFS_ATTR_FATTR_ATIME;
4107 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4108 }
4109 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4110 return status;
4111}
4112
4113static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4114{
4115 int status = 0;
4116
4117 time->tv_sec = 0;
4118 time->tv_nsec = 0;
4119 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4120 return -EIO;
4121 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4122 status = decode_attr_time(xdr, time);
4123 if (status == 0)
4124 status = NFS_ATTR_FATTR_CTIME;
4125 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4126 }
4127 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4128 return status;
4129}
4130
4131static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4132 struct timespec *time)
4133{
4134 int status = 0;
4135
4136 time->tv_sec = 0;
4137 time->tv_nsec = 0;
4138 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4139 return -EIO;
4140 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4141 status = decode_attr_time(xdr, time);
4142 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4143 }
4144 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4145 (long)time->tv_nsec);
4146 return status;
4147}
4148
4149static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4150 struct nfs4_label *label)
4151{
4152 uint32_t pi = 0;
4153 uint32_t lfs = 0;
4154 __u32 len;
4155 __be32 *p;
4156 int status = 0;
4157
4158 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4159 return -EIO;
4160 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4161 p = xdr_inline_decode(xdr, 4);
4162 if (unlikely(!p))
4163 goto out_overflow;
4164 lfs = be32_to_cpup(p++);
4165 p = xdr_inline_decode(xdr, 4);
4166 if (unlikely(!p))
4167 goto out_overflow;
4168 pi = be32_to_cpup(p++);
4169 p = xdr_inline_decode(xdr, 4);
4170 if (unlikely(!p))
4171 goto out_overflow;
4172 len = be32_to_cpup(p++);
4173 p = xdr_inline_decode(xdr, len);
4174 if (unlikely(!p))
4175 goto out_overflow;
4176 if (len < NFS4_MAXLABELLEN) {
4177 if (label) {
4178 memcpy(label->label, p, len);
4179 label->len = len;
4180 label->pi = pi;
4181 label->lfs = lfs;
4182 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4183 }
4184 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4185 } else
4186 printk(KERN_WARNING "%s: label too long (%u)!\n",
4187 __func__, len);
4188 }
4189 if (label && label->label)
4190 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4191 (char *)label->label, label->len, label->pi, label->lfs);
4192 return status;
4193
4194out_overflow:
4195 print_overflow_msg(__func__, xdr);
4196 return -EIO;
4197}
4198
4199static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4200{
4201 int status = 0;
4202
4203 time->tv_sec = 0;
4204 time->tv_nsec = 0;
4205 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4206 return -EIO;
4207 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4208 status = decode_attr_time(xdr, time);
4209 if (status == 0)
4210 status = NFS_ATTR_FATTR_MTIME;
4211 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4212 }
4213 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4214 return status;
4215}
4216
4217static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4218{
4219 unsigned int attrwords = XDR_QUADLEN(attrlen);
4220 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4221
4222 if (unlikely(attrwords != nwords)) {
4223 dprintk("%s: server returned incorrect attribute length: "
4224 "%u %c %u\n",
4225 __func__,
4226 attrwords << 2,
4227 (attrwords < nwords) ? '<' : '>',
4228 nwords << 2);
4229 return -EIO;
4230 }
4231 return 0;
4232}
4233
4234static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4235{
4236 __be32 *p;
4237
4238 p = xdr_inline_decode(xdr, 20);
4239 if (unlikely(!p))
4240 goto out_overflow;
4241 cinfo->atomic = be32_to_cpup(p++);
4242 p = xdr_decode_hyper(p, &cinfo->before);
4243 xdr_decode_hyper(p, &cinfo->after);
4244 return 0;
4245out_overflow:
4246 print_overflow_msg(__func__, xdr);
4247 return -EIO;
4248}
4249
4250static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4251{
4252 __be32 *p;
4253 uint32_t supp, acc;
4254 int status;
4255
4256 status = decode_op_hdr(xdr, OP_ACCESS);
4257 if (status)
4258 return status;
4259 p = xdr_inline_decode(xdr, 8);
4260 if (unlikely(!p))
4261 goto out_overflow;
4262 supp = be32_to_cpup(p++);
4263 acc = be32_to_cpup(p);
4264 *supported = supp;
4265 *access = acc;
4266 return 0;
4267out_overflow:
4268 print_overflow_msg(__func__, xdr);
4269 return -EIO;
4270}
4271
4272static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4273{
4274 __be32 *p;
4275
4276 p = xdr_inline_decode(xdr, len);
4277 if (likely(p)) {
4278 memcpy(buf, p, len);
4279 return 0;
4280 }
4281 print_overflow_msg(__func__, xdr);
4282 return -EIO;
4283}
4284
4285static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4286{
4287 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4288}
4289
4290static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4291{
4292 int status;
4293
4294 status = decode_op_hdr(xdr, OP_CLOSE);
4295 if (status != -EIO)
4296 nfs_increment_open_seqid(status, res->seqid);
4297 if (!status)
4298 status = decode_stateid(xdr, &res->stateid);
4299 return status;
4300}
4301
4302static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4303{
4304 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4305}
4306
4307static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4308{
4309 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4310}
4311
4312static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4313{
4314 int status;
4315
4316 status = decode_op_hdr(xdr, OP_COMMIT);
4317 if (!status)
4318 status = decode_write_verifier(xdr, &res->verf->verifier);
4319 return status;
4320}
4321
4322static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4323{
4324 __be32 *p;
4325 uint32_t bmlen;
4326 int status;
4327
4328 status = decode_op_hdr(xdr, OP_CREATE);
4329 if (status)
4330 return status;
4331 if ((status = decode_change_info(xdr, cinfo)))
4332 return status;
4333 p = xdr_inline_decode(xdr, 4);
4334 if (unlikely(!p))
4335 goto out_overflow;
4336 bmlen = be32_to_cpup(p);
4337 p = xdr_inline_decode(xdr, bmlen << 2);
4338 if (likely(p))
4339 return 0;
4340out_overflow:
4341 print_overflow_msg(__func__, xdr);
4342 return -EIO;
4343}
4344
4345static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4346{
4347 unsigned int savep;
4348 uint32_t attrlen, bitmap[3] = {0};
4349 int status;
4350
4351 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4352 goto xdr_error;
4353 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4354 goto xdr_error;
4355 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4356 goto xdr_error;
4357 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4358 goto xdr_error;
4359 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4360 &res->fh_expire_type)) != 0)
4361 goto xdr_error;
4362 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4363 goto xdr_error;
4364 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4365 goto xdr_error;
4366 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4367 goto xdr_error;
4368 status = verify_attr_len(xdr, savep, attrlen);
4369xdr_error:
4370 dprintk("%s: xdr returned %d!\n", __func__, -status);
4371 return status;
4372}
4373
4374static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4375{
4376 unsigned int savep;
4377 uint32_t attrlen, bitmap[3] = {0};
4378 int status;
4379
4380 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4381 goto xdr_error;
4382 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4383 goto xdr_error;
4384 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4385 goto xdr_error;
4386
4387 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4388 goto xdr_error;
4389 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4390 goto xdr_error;
4391 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4392 goto xdr_error;
4393 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4394 goto xdr_error;
4395 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4396 goto xdr_error;
4397 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4398 goto xdr_error;
4399
4400 status = verify_attr_len(xdr, savep, attrlen);
4401xdr_error:
4402 dprintk("%s: xdr returned %d!\n", __func__, -status);
4403 return status;
4404}
4405
4406static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4407{
4408 unsigned int savep;
4409 uint32_t attrlen, bitmap[3] = {0};
4410 int status;
4411
4412 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4413 goto xdr_error;
4414 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4415 goto xdr_error;
4416 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4417 goto xdr_error;
4418
4419 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4420 goto xdr_error;
4421 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4422 goto xdr_error;
4423
4424 status = verify_attr_len(xdr, savep, attrlen);
4425xdr_error:
4426 dprintk("%s: xdr returned %d!\n", __func__, -status);
4427 return status;
4428}
4429
4430static int decode_threshold_hint(struct xdr_stream *xdr,
4431 uint32_t *bitmap,
4432 uint64_t *res,
4433 uint32_t hint_bit)
4434{
4435 __be32 *p;
4436
4437 *res = 0;
4438 if (likely(bitmap[0] & hint_bit)) {
4439 p = xdr_inline_decode(xdr, 8);
4440 if (unlikely(!p))
4441 goto out_overflow;
4442 xdr_decode_hyper(p, res);
4443 }
4444 return 0;
4445out_overflow:
4446 print_overflow_msg(__func__, xdr);
4447 return -EIO;
4448}
4449
4450static int decode_first_threshold_item4(struct xdr_stream *xdr,
4451 struct nfs4_threshold *res)
4452{
4453 __be32 *p;
4454 unsigned int savep;
4455 uint32_t bitmap[3] = {0,}, attrlen;
4456 int status;
4457
4458 /* layout type */
4459 p = xdr_inline_decode(xdr, 4);
4460 if (unlikely(!p)) {
4461 print_overflow_msg(__func__, xdr);
4462 return -EIO;
4463 }
4464 res->l_type = be32_to_cpup(p);
4465
4466 /* thi_hintset bitmap */
4467 status = decode_attr_bitmap(xdr, bitmap);
4468 if (status < 0)
4469 goto xdr_error;
4470
4471 /* thi_hintlist length */
4472 status = decode_attr_length(xdr, &attrlen, &savep);
4473 if (status < 0)
4474 goto xdr_error;
4475 /* thi_hintlist */
4476 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4477 if (status < 0)
4478 goto xdr_error;
4479 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4480 if (status < 0)
4481 goto xdr_error;
4482 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4483 THRESHOLD_RD_IO);
4484 if (status < 0)
4485 goto xdr_error;
4486 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4487 THRESHOLD_WR_IO);
4488 if (status < 0)
4489 goto xdr_error;
4490
4491 status = verify_attr_len(xdr, savep, attrlen);
4492 res->bm = bitmap[0];
4493
4494 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4495 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4496 res->wr_io_sz);
4497xdr_error:
4498 dprintk("%s ret=%d!\n", __func__, status);
4499 return status;
4500}
4501
4502/*
4503 * Thresholds on pNFS direct I/O vrs MDS I/O
4504 */
4505static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4506 uint32_t *bitmap,
4507 struct nfs4_threshold *res)
4508{
4509 __be32 *p;
4510 int status = 0;
4511 uint32_t num;
4512
4513 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4514 return -EIO;
4515 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4516 /* Did the server return an unrequested attribute? */
4517 if (unlikely(res == NULL))
4518 return -EREMOTEIO;
4519 p = xdr_inline_decode(xdr, 4);
4520 if (unlikely(!p))
4521 goto out_overflow;
4522 num = be32_to_cpup(p);
4523 if (num == 0)
4524 return 0;
4525 if (num > 1)
4526 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4527 "drivers per filesystem not supported\n",
4528 __func__);
4529
4530 status = decode_first_threshold_item4(xdr, res);
4531 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4532 }
4533 return status;
4534out_overflow:
4535 print_overflow_msg(__func__, xdr);
4536 return -EIO;
4537}
4538
4539static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4540 struct nfs_fattr *fattr, struct nfs_fh *fh,
4541 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4542 const struct nfs_server *server)
4543{
4544 int status;
4545 umode_t fmode = 0;
4546 uint32_t type;
4547 int32_t err;
4548
4549 status = decode_attr_type(xdr, bitmap, &type);
4550 if (status < 0)
4551 goto xdr_error;
4552 fattr->mode = 0;
4553 if (status != 0) {
4554 fattr->mode |= nfs_type2fmt[type];
4555 fattr->valid |= status;
4556 }
4557
4558 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4559 if (status < 0)
4560 goto xdr_error;
4561 fattr->valid |= status;
4562
4563 status = decode_attr_size(xdr, bitmap, &fattr->size);
4564 if (status < 0)
4565 goto xdr_error;
4566 fattr->valid |= status;
4567
4568 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4569 if (status < 0)
4570 goto xdr_error;
4571 fattr->valid |= status;
4572
4573 err = 0;
4574 status = decode_attr_error(xdr, bitmap, &err);
4575 if (status < 0)
4576 goto xdr_error;
4577
4578 status = decode_attr_filehandle(xdr, bitmap, fh);
4579 if (status < 0)
4580 goto xdr_error;
4581
4582 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4583 if (status < 0)
4584 goto xdr_error;
4585 fattr->valid |= status;
4586
4587 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4588 if (status < 0)
4589 goto xdr_error;
4590 fattr->valid |= status;
4591
4592 status = decode_attr_mode(xdr, bitmap, &fmode);
4593 if (status < 0)
4594 goto xdr_error;
4595 if (status != 0) {
4596 fattr->mode |= fmode;
4597 fattr->valid |= status;
4598 }
4599
4600 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4601 if (status < 0)
4602 goto xdr_error;
4603 fattr->valid |= status;
4604
4605 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4606 if (status < 0)
4607 goto xdr_error;
4608 fattr->valid |= status;
4609
4610 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4611 if (status < 0)
4612 goto xdr_error;
4613 fattr->valid |= status;
4614
4615 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4616 if (status < 0)
4617 goto xdr_error;
4618 fattr->valid |= status;
4619
4620 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4621 if (status < 0)
4622 goto xdr_error;
4623 fattr->valid |= status;
4624
4625 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4626 if (status < 0)
4627 goto xdr_error;
4628 fattr->valid |= status;
4629
4630 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4631 if (status < 0)
4632 goto xdr_error;
4633 fattr->valid |= status;
4634
4635 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4636 if (status < 0)
4637 goto xdr_error;
4638 fattr->valid |= status;
4639
4640 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4641 if (status < 0)
4642 goto xdr_error;
4643 fattr->valid |= status;
4644
4645 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4646 if (status < 0)
4647 goto xdr_error;
4648
4649 if (label) {
4650 status = decode_attr_security_label(xdr, bitmap, label);
4651 if (status < 0)
4652 goto xdr_error;
4653 fattr->valid |= status;
4654 }
4655
4656xdr_error:
4657 dprintk("%s: xdr returned %d\n", __func__, -status);
4658 return status;
4659}
4660
4661static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4662 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4663 struct nfs4_label *label, const struct nfs_server *server)
4664{
4665 unsigned int savep;
4666 uint32_t attrlen,
4667 bitmap[3] = {0};
4668 int status;
4669
4670 status = decode_op_hdr(xdr, OP_GETATTR);
4671 if (status < 0)
4672 goto xdr_error;
4673
4674 status = decode_attr_bitmap(xdr, bitmap);
4675 if (status < 0)
4676 goto xdr_error;
4677
4678 status = decode_attr_length(xdr, &attrlen, &savep);
4679 if (status < 0)
4680 goto xdr_error;
4681
4682 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4683 label, server);
4684 if (status < 0)
4685 goto xdr_error;
4686
4687 status = verify_attr_len(xdr, savep, attrlen);
4688xdr_error:
4689 dprintk("%s: xdr returned %d\n", __func__, -status);
4690 return status;
4691}
4692
4693static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4694 struct nfs4_label *label, const struct nfs_server *server)
4695{
4696 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4697}
4698
4699static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4700 const struct nfs_server *server)
4701{
4702 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4703}
4704
4705/*
4706 * Decode potentially multiple layout types. Currently we only support
4707 * one layout driver per file system.
4708 */
4709static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4710 uint32_t *layouttype)
4711{
4712 __be32 *p;
4713 int num;
4714
4715 p = xdr_inline_decode(xdr, 4);
4716 if (unlikely(!p))
4717 goto out_overflow;
4718 num = be32_to_cpup(p);
4719
4720 /* pNFS is not supported by the underlying file system */
4721 if (num == 0) {
4722 *layouttype = 0;
4723 return 0;
4724 }
4725 if (num > 1)
4726 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4727 "drivers per filesystem not supported\n", __func__);
4728
4729 /* Decode and set first layout type, move xdr->p past unused types */
4730 p = xdr_inline_decode(xdr, num * 4);
4731 if (unlikely(!p))
4732 goto out_overflow;
4733 *layouttype = be32_to_cpup(p);
4734 return 0;
4735out_overflow:
4736 print_overflow_msg(__func__, xdr);
4737 return -EIO;
4738}
4739
4740/*
4741 * The type of file system exported.
4742 * Note we must ensure that layouttype is set in any non-error case.
4743 */
4744static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4745 uint32_t *layouttype)
4746{
4747 int status = 0;
4748
4749 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4750 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4751 return -EIO;
4752 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4753 status = decode_first_pnfs_layout_type(xdr, layouttype);
4754 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4755 } else
4756 *layouttype = 0;
4757 return status;
4758}
4759
4760/*
4761 * The prefered block size for layout directed io
4762 */
4763static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4764 uint32_t *res)
4765{
4766 __be32 *p;
4767
4768 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4769 *res = 0;
4770 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4771 p = xdr_inline_decode(xdr, 4);
4772 if (unlikely(!p)) {
4773 print_overflow_msg(__func__, xdr);
4774 return -EIO;
4775 }
4776 *res = be32_to_cpup(p);
4777 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4778 }
4779 return 0;
4780}
4781
4782static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4783{
4784 unsigned int savep;
4785 uint32_t attrlen, bitmap[3];
4786 int status;
4787
4788 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4789 goto xdr_error;
4790 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4791 goto xdr_error;
4792 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4793 goto xdr_error;
4794
4795 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4796
4797 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4798 goto xdr_error;
4799 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4800 goto xdr_error;
4801 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4802 goto xdr_error;
4803 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4804 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4805 goto xdr_error;
4806 fsinfo->wtpref = fsinfo->wtmax;
4807 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4808 if (status != 0)
4809 goto xdr_error;
4810 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4811 if (status != 0)
4812 goto xdr_error;
4813 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4814 if (status)
4815 goto xdr_error;
4816
4817 status = verify_attr_len(xdr, savep, attrlen);
4818xdr_error:
4819 dprintk("%s: xdr returned %d!\n", __func__, -status);
4820 return status;
4821}
4822
4823static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4824{
4825 __be32 *p;
4826 uint32_t len;
4827 int status;
4828
4829 /* Zero handle first to allow comparisons */
4830 memset(fh, 0, sizeof(*fh));
4831
4832 status = decode_op_hdr(xdr, OP_GETFH);
4833 if (status)
4834 return status;
4835
4836 p = xdr_inline_decode(xdr, 4);
4837 if (unlikely(!p))
4838 goto out_overflow;
4839 len = be32_to_cpup(p);
4840 if (len > NFS4_FHSIZE)
4841 return -EIO;
4842 fh->size = len;
4843 p = xdr_inline_decode(xdr, len);
4844 if (unlikely(!p))
4845 goto out_overflow;
4846 memcpy(fh->data, p, len);
4847 return 0;
4848out_overflow:
4849 print_overflow_msg(__func__, xdr);
4850 return -EIO;
4851}
4852
4853static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4854{
4855 int status;
4856
4857 status = decode_op_hdr(xdr, OP_LINK);
4858 if (status)
4859 return status;
4860 return decode_change_info(xdr, cinfo);
4861}
4862
4863/*
4864 * We create the owner, so we know a proper owner.id length is 4.
4865 */
4866static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4867{
4868 uint64_t offset, length, clientid;
4869 __be32 *p;
4870 uint32_t namelen, type;
4871
4872 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4873 if (unlikely(!p))
4874 goto out_overflow;
4875 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4876 p = xdr_decode_hyper(p, &length);
4877 type = be32_to_cpup(p++); /* 4 byte read */
4878 if (fl != NULL) { /* manipulate file lock */
4879 fl->fl_start = (loff_t)offset;
4880 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4881 if (length == ~(uint64_t)0)
4882 fl->fl_end = OFFSET_MAX;
4883 fl->fl_type = F_WRLCK;
4884 if (type & 1)
4885 fl->fl_type = F_RDLCK;
4886 fl->fl_pid = 0;
4887 }
4888 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4889 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4890 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4891 if (likely(p))
4892 return -NFS4ERR_DENIED;
4893out_overflow:
4894 print_overflow_msg(__func__, xdr);
4895 return -EIO;
4896}
4897
4898static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4899{
4900 int status;
4901
4902 status = decode_op_hdr(xdr, OP_LOCK);
4903 if (status == -EIO)
4904 goto out;
4905 if (status == 0) {
4906 status = decode_stateid(xdr, &res->stateid);
4907 if (unlikely(status))
4908 goto out;
4909 } else if (status == -NFS4ERR_DENIED)
4910 status = decode_lock_denied(xdr, NULL);
4911 if (res->open_seqid != NULL)
4912 nfs_increment_open_seqid(status, res->open_seqid);
4913 nfs_increment_lock_seqid(status, res->lock_seqid);
4914out:
4915 return status;
4916}
4917
4918static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4919{
4920 int status;
4921 status = decode_op_hdr(xdr, OP_LOCKT);
4922 if (status == -NFS4ERR_DENIED)
4923 return decode_lock_denied(xdr, res->denied);
4924 return status;
4925}
4926
4927static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4928{
4929 int status;
4930
4931 status = decode_op_hdr(xdr, OP_LOCKU);
4932 if (status != -EIO)
4933 nfs_increment_lock_seqid(status, res->seqid);
4934 if (status == 0)
4935 status = decode_stateid(xdr, &res->stateid);
4936 return status;
4937}
4938
4939static int decode_release_lockowner(struct xdr_stream *xdr)
4940{
4941 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4942}
4943
4944static int decode_lookup(struct xdr_stream *xdr)
4945{
4946 return decode_op_hdr(xdr, OP_LOOKUP);
4947}
4948
4949/* This is too sick! */
4950static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4951{
4952 __be32 *p;
4953 uint32_t limit_type, nblocks, blocksize;
4954
4955 p = xdr_inline_decode(xdr, 12);
4956 if (unlikely(!p))
4957 goto out_overflow;
4958 limit_type = be32_to_cpup(p++);
4959 switch (limit_type) {
4960 case 1:
4961 xdr_decode_hyper(p, maxsize);
4962 break;
4963 case 2:
4964 nblocks = be32_to_cpup(p++);
4965 blocksize = be32_to_cpup(p);
4966 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4967 }
4968 return 0;
4969out_overflow:
4970 print_overflow_msg(__func__, xdr);
4971 return -EIO;
4972}
4973
4974static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4975{
4976 __be32 *p;
4977 uint32_t delegation_type;
4978 int status;
4979
4980 p = xdr_inline_decode(xdr, 4);
4981 if (unlikely(!p))
4982 goto out_overflow;
4983 delegation_type = be32_to_cpup(p);
4984 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4985 res->delegation_type = 0;
4986 return 0;
4987 }
4988 status = decode_stateid(xdr, &res->delegation);
4989 if (unlikely(status))
4990 return status;
4991 p = xdr_inline_decode(xdr, 4);
4992 if (unlikely(!p))
4993 goto out_overflow;
4994 res->do_recall = be32_to_cpup(p);
4995
4996 switch (delegation_type) {
4997 case NFS4_OPEN_DELEGATE_READ:
4998 res->delegation_type = FMODE_READ;
4999 break;
5000 case NFS4_OPEN_DELEGATE_WRITE:
5001 res->delegation_type = FMODE_WRITE|FMODE_READ;
5002 if (decode_space_limit(xdr, &res->maxsize) < 0)
5003 return -EIO;
5004 }
5005 return decode_ace(xdr, NULL, res->server->nfs_client);
5006out_overflow:
5007 print_overflow_msg(__func__, xdr);
5008 return -EIO;
5009}
5010
5011static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5012{
5013 __be32 *p;
5014 uint32_t savewords, bmlen, i;
5015 int status;
5016
5017 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5018 return status;
5019 nfs_increment_open_seqid(status, res->seqid);
5020 if (status)
5021 return status;
5022 status = decode_stateid(xdr, &res->stateid);
5023 if (unlikely(status))
5024 return status;
5025
5026 decode_change_info(xdr, &res->cinfo);
5027
5028 p = xdr_inline_decode(xdr, 8);
5029 if (unlikely(!p))
5030 goto out_overflow;
5031 res->rflags = be32_to_cpup(p++);
5032 bmlen = be32_to_cpup(p);
5033 if (bmlen > 10)
5034 goto xdr_error;
5035
5036 p = xdr_inline_decode(xdr, bmlen << 2);
5037 if (unlikely(!p))
5038 goto out_overflow;
5039 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5040 for (i = 0; i < savewords; ++i)
5041 res->attrset[i] = be32_to_cpup(p++);
5042 for (; i < NFS4_BITMAP_SIZE; i++)
5043 res->attrset[i] = 0;
5044
5045 return decode_delegation(xdr, res);
5046xdr_error:
5047 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5048 return -EIO;
5049out_overflow:
5050 print_overflow_msg(__func__, xdr);
5051 return -EIO;
5052}
5053
5054static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5055{
5056 int status;
5057
5058 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5059 if (status != -EIO)
5060 nfs_increment_open_seqid(status, res->seqid);
5061 if (!status)
5062 status = decode_stateid(xdr, &res->stateid);
5063 return status;
5064}
5065
5066static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5067{
5068 int status;
5069
5070 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5071 if (status != -EIO)
5072 nfs_increment_open_seqid(status, res->seqid);
5073 if (!status)
5074 status = decode_stateid(xdr, &res->stateid);
5075 return status;
5076}
5077
5078static int decode_putfh(struct xdr_stream *xdr)
5079{
5080 return decode_op_hdr(xdr, OP_PUTFH);
5081}
5082
5083static int decode_putrootfh(struct xdr_stream *xdr)
5084{
5085 return decode_op_hdr(xdr, OP_PUTROOTFH);
5086}
5087
5088static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
5089{
5090 __be32 *p;
5091 uint32_t count, eof, recvd;
5092 int status;
5093
5094 status = decode_op_hdr(xdr, OP_READ);
5095 if (status)
5096 return status;
5097 p = xdr_inline_decode(xdr, 8);
5098 if (unlikely(!p))
5099 goto out_overflow;
5100 eof = be32_to_cpup(p++);
5101 count = be32_to_cpup(p);
5102 recvd = xdr_read_pages(xdr, count);
5103 if (count > recvd) {
5104 dprintk("NFS: server cheating in read reply: "
5105 "count %u > recvd %u\n", count, recvd);
5106 count = recvd;
5107 eof = 0;
5108 }
5109 res->eof = eof;
5110 res->count = count;
5111 return 0;
5112out_overflow:
5113 print_overflow_msg(__func__, xdr);
5114 return -EIO;
5115}
5116
5117static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5118{
5119 int status;
5120 __be32 verf[2];
5121
5122 status = decode_op_hdr(xdr, OP_READDIR);
5123 if (!status)
5124 status = decode_verifier(xdr, readdir->verifier.data);
5125 if (unlikely(status))
5126 return status;
5127 memcpy(verf, readdir->verifier.data, sizeof(verf));
5128 dprintk("%s: verifier = %08x:%08x\n",
5129 __func__, verf[0], verf[1]);
5130 return xdr_read_pages(xdr, xdr->buf->page_len);
5131}
5132
5133static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5134{
5135 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5136 u32 len, recvd;
5137 __be32 *p;
5138 int status;
5139
5140 status = decode_op_hdr(xdr, OP_READLINK);
5141 if (status)
5142 return status;
5143
5144 /* Convert length of symlink */
5145 p = xdr_inline_decode(xdr, 4);
5146 if (unlikely(!p))
5147 goto out_overflow;
5148 len = be32_to_cpup(p);
5149 if (len >= rcvbuf->page_len || len <= 0) {
5150 dprintk("nfs: server returned giant symlink!\n");
5151 return -ENAMETOOLONG;
5152 }
5153 recvd = xdr_read_pages(xdr, len);
5154 if (recvd < len) {
5155 dprintk("NFS: server cheating in readlink reply: "
5156 "count %u > recvd %u\n", len, recvd);
5157 return -EIO;
5158 }
5159 /*
5160 * The XDR encode routine has set things up so that
5161 * the link text will be copied directly into the
5162 * buffer. We just have to do overflow-checking,
5163 * and and null-terminate the text (the VFS expects
5164 * null-termination).
5165 */
5166 xdr_terminate_string(rcvbuf, len);
5167 return 0;
5168out_overflow:
5169 print_overflow_msg(__func__, xdr);
5170 return -EIO;
5171}
5172
5173static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5174{
5175 int status;
5176
5177 status = decode_op_hdr(xdr, OP_REMOVE);
5178 if (status)
5179 goto out;
5180 status = decode_change_info(xdr, cinfo);
5181out:
5182 return status;
5183}
5184
5185static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5186 struct nfs4_change_info *new_cinfo)
5187{
5188 int status;
5189
5190 status = decode_op_hdr(xdr, OP_RENAME);
5191 if (status)
5192 goto out;
5193 if ((status = decode_change_info(xdr, old_cinfo)))
5194 goto out;
5195 status = decode_change_info(xdr, new_cinfo);
5196out:
5197 return status;
5198}
5199
5200static int decode_renew(struct xdr_stream *xdr)
5201{
5202 return decode_op_hdr(xdr, OP_RENEW);
5203}
5204
5205static int
5206decode_restorefh(struct xdr_stream *xdr)
5207{
5208 return decode_op_hdr(xdr, OP_RESTOREFH);
5209}
5210
5211static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5212 struct nfs_getaclres *res)
5213{
5214 unsigned int savep;
5215 uint32_t attrlen,
5216 bitmap[3] = {0};
5217 int status;
5218 unsigned int pg_offset;
5219
5220 res->acl_len = 0;
5221 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5222 goto out;
5223
5224 xdr_enter_page(xdr, xdr->buf->page_len);
5225
5226 /* Calculate the offset of the page data */
5227 pg_offset = xdr->buf->head[0].iov_len;
5228
5229 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5230 goto out;
5231 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5232 goto out;
5233
5234 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5235 return -EIO;
5236 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5237
5238 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5239 * are stored with the acl data to handle the problem of
5240 * variable length bitmaps.*/
5241 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5242 res->acl_len = attrlen;
5243
5244 /* Check for receive buffer overflow */
5245 if (res->acl_len > (xdr->nwords << 2) ||
5246 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5247 res->acl_flags |= NFS4_ACL_TRUNC;
5248 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5249 attrlen, xdr->nwords << 2);
5250 }
5251 } else
5252 status = -EOPNOTSUPP;
5253
5254out:
5255 return status;
5256}
5257
5258static int
5259decode_savefh(struct xdr_stream *xdr)
5260{
5261 return decode_op_hdr(xdr, OP_SAVEFH);
5262}
5263
5264static int decode_setattr(struct xdr_stream *xdr)
5265{
5266 __be32 *p;
5267 uint32_t bmlen;
5268 int status;
5269
5270 status = decode_op_hdr(xdr, OP_SETATTR);
5271 if (status)
5272 return status;
5273 p = xdr_inline_decode(xdr, 4);
5274 if (unlikely(!p))
5275 goto out_overflow;
5276 bmlen = be32_to_cpup(p);
5277 p = xdr_inline_decode(xdr, bmlen << 2);
5278 if (likely(p))
5279 return 0;
5280out_overflow:
5281 print_overflow_msg(__func__, xdr);
5282 return -EIO;
5283}
5284
5285static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5286{
5287 __be32 *p;
5288 uint32_t opnum;
5289 int32_t nfserr;
5290
5291 p = xdr_inline_decode(xdr, 8);
5292 if (unlikely(!p))
5293 goto out_overflow;
5294 opnum = be32_to_cpup(p++);
5295 if (opnum != OP_SETCLIENTID) {
5296 dprintk("nfs: decode_setclientid: Server returned operation"
5297 " %d\n", opnum);
5298 return -EIO;
5299 }
5300 nfserr = be32_to_cpup(p);
5301 if (nfserr == NFS_OK) {
5302 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5303 if (unlikely(!p))
5304 goto out_overflow;
5305 p = xdr_decode_hyper(p, &res->clientid);
5306 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5307 } else if (nfserr == NFSERR_CLID_INUSE) {
5308 uint32_t len;
5309
5310 /* skip netid string */
5311 p = xdr_inline_decode(xdr, 4);
5312 if (unlikely(!p))
5313 goto out_overflow;
5314 len = be32_to_cpup(p);
5315 p = xdr_inline_decode(xdr, len);
5316 if (unlikely(!p))
5317 goto out_overflow;
5318
5319 /* skip uaddr string */
5320 p = xdr_inline_decode(xdr, 4);
5321 if (unlikely(!p))
5322 goto out_overflow;
5323 len = be32_to_cpup(p);
5324 p = xdr_inline_decode(xdr, len);
5325 if (unlikely(!p))
5326 goto out_overflow;
5327 return -NFSERR_CLID_INUSE;
5328 } else
5329 return nfs4_stat_to_errno(nfserr);
5330
5331 return 0;
5332out_overflow:
5333 print_overflow_msg(__func__, xdr);
5334 return -EIO;
5335}
5336
5337static int decode_setclientid_confirm(struct xdr_stream *xdr)
5338{
5339 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5340}
5341
5342static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5343{
5344 __be32 *p;
5345 int status;
5346
5347 status = decode_op_hdr(xdr, OP_WRITE);
5348 if (status)
5349 return status;
5350
5351 p = xdr_inline_decode(xdr, 8);
5352 if (unlikely(!p))
5353 goto out_overflow;
5354 res->count = be32_to_cpup(p++);
5355 res->verf->committed = be32_to_cpup(p++);
5356 return decode_write_verifier(xdr, &res->verf->verifier);
5357out_overflow:
5358 print_overflow_msg(__func__, xdr);
5359 return -EIO;
5360}
5361
5362static int decode_delegreturn(struct xdr_stream *xdr)
5363{
5364 return decode_op_hdr(xdr, OP_DELEGRETURN);
5365}
5366
5367static int decode_secinfo_gss(struct xdr_stream *xdr,
5368 struct nfs4_secinfo4 *flavor)
5369{
5370 u32 oid_len;
5371 __be32 *p;
5372
5373 p = xdr_inline_decode(xdr, 4);
5374 if (unlikely(!p))
5375 goto out_overflow;
5376 oid_len = be32_to_cpup(p);
5377 if (oid_len > GSS_OID_MAX_LEN)
5378 goto out_err;
5379
5380 p = xdr_inline_decode(xdr, oid_len);
5381 if (unlikely(!p))
5382 goto out_overflow;
5383 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5384 flavor->flavor_info.oid.len = oid_len;
5385
5386 p = xdr_inline_decode(xdr, 8);
5387 if (unlikely(!p))
5388 goto out_overflow;
5389 flavor->flavor_info.qop = be32_to_cpup(p++);
5390 flavor->flavor_info.service = be32_to_cpup(p);
5391
5392 return 0;
5393
5394out_overflow:
5395 print_overflow_msg(__func__, xdr);
5396 return -EIO;
5397out_err:
5398 return -EINVAL;
5399}
5400
5401static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5402{
5403 struct nfs4_secinfo4 *sec_flavor;
5404 unsigned int i, num_flavors;
5405 int status;
5406 __be32 *p;
5407
5408 p = xdr_inline_decode(xdr, 4);
5409 if (unlikely(!p))
5410 goto out_overflow;
5411
5412 res->flavors->num_flavors = 0;
5413 num_flavors = be32_to_cpup(p);
5414
5415 for (i = 0; i < num_flavors; i++) {
5416 sec_flavor = &res->flavors->flavors[i];
5417 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5418 break;
5419
5420 p = xdr_inline_decode(xdr, 4);
5421 if (unlikely(!p))
5422 goto out_overflow;
5423 sec_flavor->flavor = be32_to_cpup(p);
5424
5425 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5426 status = decode_secinfo_gss(xdr, sec_flavor);
5427 if (status)
5428 goto out;
5429 }
5430 res->flavors->num_flavors++;
5431 }
5432
5433 status = 0;
5434out:
5435 return status;
5436out_overflow:
5437 print_overflow_msg(__func__, xdr);
5438 return -EIO;
5439}
5440
5441static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5442{
5443 int status = decode_op_hdr(xdr, OP_SECINFO);
5444 if (status)
5445 return status;
5446 return decode_secinfo_common(xdr, res);
5447}
5448
5449#if defined(CONFIG_NFS_V4_1)
5450static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5451{
5452 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5453 if (status)
5454 return status;
5455 return decode_secinfo_common(xdr, res);
5456}
5457
5458static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5459{
5460 __be32 *p;
5461 uint32_t bitmap_words;
5462 unsigned int i;
5463
5464 p = xdr_inline_decode(xdr, 4);
5465 bitmap_words = be32_to_cpup(p++);
5466 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5467 return -EIO;
5468 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5469 for (i = 0; i < bitmap_words; i++)
5470 op_map->u.words[i] = be32_to_cpup(p++);
5471
5472 return 0;
5473}
5474
5475static int decode_exchange_id(struct xdr_stream *xdr,
5476 struct nfs41_exchange_id_res *res)
5477{
5478 __be32 *p;
5479 uint32_t dummy;
5480 char *dummy_str;
5481 int status;
5482 uint32_t impl_id_count;
5483
5484 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5485 if (status)
5486 return status;
5487
5488 p = xdr_inline_decode(xdr, 8);
5489 if (unlikely(!p))
5490 goto out_overflow;
5491 xdr_decode_hyper(p, &res->clientid);
5492 p = xdr_inline_decode(xdr, 12);
5493 if (unlikely(!p))
5494 goto out_overflow;
5495 res->seqid = be32_to_cpup(p++);
5496 res->flags = be32_to_cpup(p++);
5497
5498 res->state_protect.how = be32_to_cpup(p);
5499 switch (res->state_protect.how) {
5500 case SP4_NONE:
5501 break;
5502 case SP4_MACH_CRED:
5503 status = decode_op_map(xdr, &res->state_protect.enforce);
5504 if (status)
5505 return status;
5506 status = decode_op_map(xdr, &res->state_protect.allow);
5507 if (status)
5508 return status;
5509 break;
5510 default:
5511 WARN_ON_ONCE(1);
5512 return -EIO;
5513 }
5514
5515 /* server_owner4.so_minor_id */
5516 p = xdr_inline_decode(xdr, 8);
5517 if (unlikely(!p))
5518 goto out_overflow;
5519 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5520
5521 /* server_owner4.so_major_id */
5522 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5523 if (unlikely(status))
5524 return status;
5525 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5526 return -EIO;
5527 memcpy(res->server_owner->major_id, dummy_str, dummy);
5528 res->server_owner->major_id_sz = dummy;
5529
5530 /* server_scope4 */
5531 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5532 if (unlikely(status))
5533 return status;
5534 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5535 return -EIO;
5536 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5537 res->server_scope->server_scope_sz = dummy;
5538
5539 /* Implementation Id */
5540 p = xdr_inline_decode(xdr, 4);
5541 if (unlikely(!p))
5542 goto out_overflow;
5543 impl_id_count = be32_to_cpup(p++);
5544
5545 if (impl_id_count) {
5546 /* nii_domain */
5547 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5548 if (unlikely(status))
5549 return status;
5550 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5551 return -EIO;
5552 memcpy(res->impl_id->domain, dummy_str, dummy);
5553
5554 /* nii_name */
5555 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5556 if (unlikely(status))
5557 return status;
5558 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5559 return -EIO;
5560 memcpy(res->impl_id->name, dummy_str, dummy);
5561
5562 /* nii_date */
5563 p = xdr_inline_decode(xdr, 12);
5564 if (unlikely(!p))
5565 goto out_overflow;
5566 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5567 res->impl_id->date.nseconds = be32_to_cpup(p);
5568
5569 /* if there's more than one entry, ignore the rest */
5570 }
5571 return 0;
5572out_overflow:
5573 print_overflow_msg(__func__, xdr);
5574 return -EIO;
5575}
5576
5577static int decode_chan_attrs(struct xdr_stream *xdr,
5578 struct nfs4_channel_attrs *attrs)
5579{
5580 __be32 *p;
5581 u32 nr_attrs, val;
5582
5583 p = xdr_inline_decode(xdr, 28);
5584 if (unlikely(!p))
5585 goto out_overflow;
5586 val = be32_to_cpup(p++); /* headerpadsz */
5587 if (val)
5588 return -EINVAL; /* no support for header padding yet */
5589 attrs->max_rqst_sz = be32_to_cpup(p++);
5590 attrs->max_resp_sz = be32_to_cpup(p++);
5591 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5592 attrs->max_ops = be32_to_cpup(p++);
5593 attrs->max_reqs = be32_to_cpup(p++);
5594 nr_attrs = be32_to_cpup(p);
5595 if (unlikely(nr_attrs > 1)) {
5596 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5597 "count %u\n", __func__, nr_attrs);
5598 return -EINVAL;
5599 }
5600 if (nr_attrs == 1) {
5601 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5602 if (unlikely(!p))
5603 goto out_overflow;
5604 }
5605 return 0;
5606out_overflow:
5607 print_overflow_msg(__func__, xdr);
5608 return -EIO;
5609}
5610
5611static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5612{
5613 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5614}
5615
5616static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5617 struct nfs41_bind_conn_to_session_res *res)
5618{
5619 __be32 *p;
5620 int status;
5621
5622 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5623 if (!status)
5624 status = decode_sessionid(xdr, &res->session->sess_id);
5625 if (unlikely(status))
5626 return status;
5627
5628 /* dir flags, rdma mode bool */
5629 p = xdr_inline_decode(xdr, 8);
5630 if (unlikely(!p))
5631 goto out_overflow;
5632
5633 res->dir = be32_to_cpup(p++);
5634 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5635 return -EIO;
5636 if (be32_to_cpup(p) == 0)
5637 res->use_conn_in_rdma_mode = false;
5638 else
5639 res->use_conn_in_rdma_mode = true;
5640
5641 return 0;
5642out_overflow:
5643 print_overflow_msg(__func__, xdr);
5644 return -EIO;
5645}
5646
5647static int decode_create_session(struct xdr_stream *xdr,
5648 struct nfs41_create_session_res *res)
5649{
5650 __be32 *p;
5651 int status;
5652 struct nfs_client *clp = res->client;
5653 struct nfs4_session *session = clp->cl_session;
5654
5655 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5656 if (!status)
5657 status = decode_sessionid(xdr, &session->sess_id);
5658 if (unlikely(status))
5659 return status;
5660
5661 /* seqid, flags */
5662 p = xdr_inline_decode(xdr, 8);
5663 if (unlikely(!p))
5664 goto out_overflow;
5665 clp->cl_seqid = be32_to_cpup(p++);
5666 session->flags = be32_to_cpup(p);
5667
5668 /* Channel attributes */
5669 status = decode_chan_attrs(xdr, &session->fc_attrs);
5670 if (!status)
5671 status = decode_chan_attrs(xdr, &session->bc_attrs);
5672 return status;
5673out_overflow:
5674 print_overflow_msg(__func__, xdr);
5675 return -EIO;
5676}
5677
5678static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5679{
5680 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5681}
5682
5683static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5684{
5685 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5686}
5687
5688static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5689{
5690 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5691}
5692#endif /* CONFIG_NFS_V4_1 */
5693
5694static int decode_sequence(struct xdr_stream *xdr,
5695 struct nfs4_sequence_res *res,
5696 struct rpc_rqst *rqstp)
5697{
5698#if defined(CONFIG_NFS_V4_1)
5699 struct nfs4_session *session;
5700 struct nfs4_sessionid id;
5701 u32 dummy;
5702 int status;
5703 __be32 *p;
5704
5705 if (res->sr_slot == NULL)
5706 return 0;
5707 if (!res->sr_slot->table->session)
5708 return 0;
5709
5710 status = decode_op_hdr(xdr, OP_SEQUENCE);
5711 if (!status)
5712 status = decode_sessionid(xdr, &id);
5713 if (unlikely(status))
5714 goto out_err;
5715
5716 /*
5717 * If the server returns different values for sessionID, slotID or
5718 * sequence number, the server is looney tunes.
5719 */
5720 status = -EREMOTEIO;
5721 session = res->sr_slot->table->session;
5722
5723 if (memcmp(id.data, session->sess_id.data,
5724 NFS4_MAX_SESSIONID_LEN)) {
5725 dprintk("%s Invalid session id\n", __func__);
5726 goto out_err;
5727 }
5728
5729 p = xdr_inline_decode(xdr, 20);
5730 if (unlikely(!p))
5731 goto out_overflow;
5732
5733 /* seqid */
5734 dummy = be32_to_cpup(p++);
5735 if (dummy != res->sr_slot->seq_nr) {
5736 dprintk("%s Invalid sequence number\n", __func__);
5737 goto out_err;
5738 }
5739 /* slot id */
5740 dummy = be32_to_cpup(p++);
5741 if (dummy != res->sr_slot->slot_nr) {
5742 dprintk("%s Invalid slot id\n", __func__);
5743 goto out_err;
5744 }
5745 /* highest slot id */
5746 res->sr_highest_slotid = be32_to_cpup(p++);
5747 /* target highest slot id */
5748 res->sr_target_highest_slotid = be32_to_cpup(p++);
5749 /* result flags */
5750 res->sr_status_flags = be32_to_cpup(p);
5751 status = 0;
5752out_err:
5753 res->sr_status = status;
5754 return status;
5755out_overflow:
5756 print_overflow_msg(__func__, xdr);
5757 status = -EIO;
5758 goto out_err;
5759#else /* CONFIG_NFS_V4_1 */
5760 return 0;
5761#endif /* CONFIG_NFS_V4_1 */
5762}
5763
5764#if defined(CONFIG_NFS_V4_1)
5765/*
5766 * TODO: Need to handle case when EOF != true;
5767 */
5768static int decode_getdevicelist(struct xdr_stream *xdr,
5769 struct pnfs_devicelist *res)
5770{
5771 __be32 *p;
5772 int status, i;
5773 nfs4_verifier verftemp;
5774
5775 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5776 if (status)
5777 return status;
5778
5779 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5780 if (unlikely(!p))
5781 goto out_overflow;
5782
5783 /* TODO: Skip cookie for now */
5784 p += 2;
5785
5786 /* Read verifier */
5787 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5788
5789 res->num_devs = be32_to_cpup(p);
5790
5791 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5792
5793 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5794 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5795 __func__, res->num_devs);
5796 return -EIO;
5797 }
5798
5799 p = xdr_inline_decode(xdr,
5800 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5801 if (unlikely(!p))
5802 goto out_overflow;
5803 for (i = 0; i < res->num_devs; i++)
5804 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5805 NFS4_DEVICEID4_SIZE);
5806 res->eof = be32_to_cpup(p);
5807 return 0;
5808out_overflow:
5809 print_overflow_msg(__func__, xdr);
5810 return -EIO;
5811}
5812
5813static int decode_getdeviceinfo(struct xdr_stream *xdr,
5814 struct pnfs_device *pdev)
5815{
5816 __be32 *p;
5817 uint32_t len, type;
5818 int status;
5819
5820 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5821 if (status) {
5822 if (status == -ETOOSMALL) {
5823 p = xdr_inline_decode(xdr, 4);
5824 if (unlikely(!p))
5825 goto out_overflow;
5826 pdev->mincount = be32_to_cpup(p);
5827 dprintk("%s: Min count too small. mincnt = %u\n",
5828 __func__, pdev->mincount);
5829 }
5830 return status;
5831 }
5832
5833 p = xdr_inline_decode(xdr, 8);
5834 if (unlikely(!p))
5835 goto out_overflow;
5836 type = be32_to_cpup(p++);
5837 if (type != pdev->layout_type) {
5838 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5839 __func__, pdev->layout_type, type);
5840 return -EINVAL;
5841 }
5842 /*
5843 * Get the length of the opaque device_addr4. xdr_read_pages places
5844 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5845 * and places the remaining xdr data in xdr_buf->tail
5846 */
5847 pdev->mincount = be32_to_cpup(p);
5848 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5849 goto out_overflow;
5850
5851 /* Parse notification bitmap, verifying that it is zero. */
5852 p = xdr_inline_decode(xdr, 4);
5853 if (unlikely(!p))
5854 goto out_overflow;
5855 len = be32_to_cpup(p);
5856 if (len) {
5857 uint32_t i;
5858
5859 p = xdr_inline_decode(xdr, 4 * len);
5860 if (unlikely(!p))
5861 goto out_overflow;
5862 for (i = 0; i < len; i++, p++) {
5863 if (be32_to_cpup(p)) {
5864 dprintk("%s: notifications not supported\n",
5865 __func__);
5866 return -EIO;
5867 }
5868 }
5869 }
5870 return 0;
5871out_overflow:
5872 print_overflow_msg(__func__, xdr);
5873 return -EIO;
5874}
5875
5876static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5877 struct nfs4_layoutget_res *res)
5878{
5879 __be32 *p;
5880 int status;
5881 u32 layout_count;
5882 u32 recvd;
5883
5884 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5885 if (status)
5886 return status;
5887 p = xdr_inline_decode(xdr, 4);
5888 if (unlikely(!p))
5889 goto out_overflow;
5890 res->return_on_close = be32_to_cpup(p);
5891 decode_stateid(xdr, &res->stateid);
5892 p = xdr_inline_decode(xdr, 4);
5893 if (unlikely(!p))
5894 goto out_overflow;
5895 layout_count = be32_to_cpup(p);
5896 if (!layout_count) {
5897 dprintk("%s: server responded with empty layout array\n",
5898 __func__);
5899 return -EINVAL;
5900 }
5901
5902 p = xdr_inline_decode(xdr, 28);
5903 if (unlikely(!p))
5904 goto out_overflow;
5905 p = xdr_decode_hyper(p, &res->range.offset);
5906 p = xdr_decode_hyper(p, &res->range.length);
5907 res->range.iomode = be32_to_cpup(p++);
5908 res->type = be32_to_cpup(p++);
5909 res->layoutp->len = be32_to_cpup(p);
5910
5911 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5912 __func__,
5913 (unsigned long)res->range.offset,
5914 (unsigned long)res->range.length,
5915 res->range.iomode,
5916 res->type,
5917 res->layoutp->len);
5918
5919 recvd = xdr_read_pages(xdr, res->layoutp->len);
5920 if (res->layoutp->len > recvd) {
5921 dprintk("NFS: server cheating in layoutget reply: "
5922 "layout len %u > recvd %u\n",
5923 res->layoutp->len, recvd);
5924 return -EINVAL;
5925 }
5926
5927 if (layout_count > 1) {
5928 /* We only handle a length one array at the moment. Any
5929 * further entries are just ignored. Note that this means
5930 * the client may see a response that is less than the
5931 * minimum it requested.
5932 */
5933 dprintk("%s: server responded with %d layouts, dropping tail\n",
5934 __func__, layout_count);
5935 }
5936
5937 return 0;
5938out_overflow:
5939 print_overflow_msg(__func__, xdr);
5940 return -EIO;
5941}
5942
5943static int decode_layoutreturn(struct xdr_stream *xdr,
5944 struct nfs4_layoutreturn_res *res)
5945{
5946 __be32 *p;
5947 int status;
5948
5949 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5950 if (status)
5951 return status;
5952 p = xdr_inline_decode(xdr, 4);
5953 if (unlikely(!p))
5954 goto out_overflow;
5955 res->lrs_present = be32_to_cpup(p);
5956 if (res->lrs_present)
5957 status = decode_stateid(xdr, &res->stateid);
5958 return status;
5959out_overflow:
5960 print_overflow_msg(__func__, xdr);
5961 return -EIO;
5962}
5963
5964static int decode_layoutcommit(struct xdr_stream *xdr,
5965 struct rpc_rqst *req,
5966 struct nfs4_layoutcommit_res *res)
5967{
5968 __be32 *p;
5969 __u32 sizechanged;
5970 int status;
5971
5972 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5973 res->status = status;
5974 if (status)
5975 return status;
5976
5977 p = xdr_inline_decode(xdr, 4);
5978 if (unlikely(!p))
5979 goto out_overflow;
5980 sizechanged = be32_to_cpup(p);
5981
5982 if (sizechanged) {
5983 /* throw away new size */
5984 p = xdr_inline_decode(xdr, 8);
5985 if (unlikely(!p))
5986 goto out_overflow;
5987 }
5988 return 0;
5989out_overflow:
5990 print_overflow_msg(__func__, xdr);
5991 return -EIO;
5992}
5993
5994static int decode_test_stateid(struct xdr_stream *xdr,
5995 struct nfs41_test_stateid_res *res)
5996{
5997 __be32 *p;
5998 int status;
5999 int num_res;
6000
6001 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6002 if (status)
6003 return status;
6004
6005 p = xdr_inline_decode(xdr, 4);
6006 if (unlikely(!p))
6007 goto out_overflow;
6008 num_res = be32_to_cpup(p++);
6009 if (num_res != 1)
6010 goto out;
6011
6012 p = xdr_inline_decode(xdr, 4);
6013 if (unlikely(!p))
6014 goto out_overflow;
6015 res->status = be32_to_cpup(p++);
6016
6017 return status;
6018out_overflow:
6019 print_overflow_msg(__func__, xdr);
6020out:
6021 return -EIO;
6022}
6023
6024static int decode_free_stateid(struct xdr_stream *xdr,
6025 struct nfs41_free_stateid_res *res)
6026{
6027 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6028 return res->status;
6029}
6030#endif /* CONFIG_NFS_V4_1 */
6031
6032/*
6033 * END OF "GENERIC" DECODE ROUTINES.
6034 */
6035
6036/*
6037 * Decode OPEN_DOWNGRADE response
6038 */
6039static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6040 struct xdr_stream *xdr,
6041 struct nfs_closeres *res)
6042{
6043 struct compound_hdr hdr;
6044 int status;
6045
6046 status = decode_compound_hdr(xdr, &hdr);
6047 if (status)
6048 goto out;
6049 status = decode_sequence(xdr, &res->seq_res, rqstp);
6050 if (status)
6051 goto out;
6052 status = decode_putfh(xdr);
6053 if (status)
6054 goto out;
6055 status = decode_open_downgrade(xdr, res);
6056 if (status != 0)
6057 goto out;
6058 decode_getfattr(xdr, res->fattr, res->server);
6059out:
6060 return status;
6061}
6062
6063/*
6064 * Decode ACCESS response
6065 */
6066static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6067 struct nfs4_accessres *res)
6068{
6069 struct compound_hdr hdr;
6070 int status;
6071
6072 status = decode_compound_hdr(xdr, &hdr);
6073 if (status)
6074 goto out;
6075 status = decode_sequence(xdr, &res->seq_res, rqstp);
6076 if (status)
6077 goto out;
6078 status = decode_putfh(xdr);
6079 if (status != 0)
6080 goto out;
6081 status = decode_access(xdr, &res->supported, &res->access);
6082 if (status != 0)
6083 goto out;
6084 decode_getfattr(xdr, res->fattr, res->server);
6085out:
6086 return status;
6087}
6088
6089/*
6090 * Decode LOOKUP response
6091 */
6092static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6093 struct nfs4_lookup_res *res)
6094{
6095 struct compound_hdr hdr;
6096 int status;
6097
6098 status = decode_compound_hdr(xdr, &hdr);
6099 if (status)
6100 goto out;
6101 status = decode_sequence(xdr, &res->seq_res, rqstp);
6102 if (status)
6103 goto out;
6104 status = decode_putfh(xdr);
6105 if (status)
6106 goto out;
6107 status = decode_lookup(xdr);
6108 if (status)
6109 goto out;
6110 status = decode_getfh(xdr, res->fh);
6111 if (status)
6112 goto out;
6113 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6114out:
6115 return status;
6116}
6117
6118/*
6119 * Decode LOOKUP_ROOT response
6120 */
6121static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6122 struct xdr_stream *xdr,
6123 struct nfs4_lookup_res *res)
6124{
6125 struct compound_hdr hdr;
6126 int status;
6127
6128 status = decode_compound_hdr(xdr, &hdr);
6129 if (status)
6130 goto out;
6131 status = decode_sequence(xdr, &res->seq_res, rqstp);
6132 if (status)
6133 goto out;
6134 status = decode_putrootfh(xdr);
6135 if (status)
6136 goto out;
6137 status = decode_getfh(xdr, res->fh);
6138 if (status == 0)
6139 status = decode_getfattr_label(xdr, res->fattr,
6140 res->label, res->server);
6141out:
6142 return status;
6143}
6144
6145/*
6146 * Decode REMOVE response
6147 */
6148static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6149 struct nfs_removeres *res)
6150{
6151 struct compound_hdr hdr;
6152 int status;
6153
6154 status = decode_compound_hdr(xdr, &hdr);
6155 if (status)
6156 goto out;
6157 status = decode_sequence(xdr, &res->seq_res, rqstp);
6158 if (status)
6159 goto out;
6160 status = decode_putfh(xdr);
6161 if (status)
6162 goto out;
6163 status = decode_remove(xdr, &res->cinfo);
6164out:
6165 return status;
6166}
6167
6168/*
6169 * Decode RENAME response
6170 */
6171static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6172 struct nfs_renameres *res)
6173{
6174 struct compound_hdr hdr;
6175 int status;
6176
6177 status = decode_compound_hdr(xdr, &hdr);
6178 if (status)
6179 goto out;
6180 status = decode_sequence(xdr, &res->seq_res, rqstp);
6181 if (status)
6182 goto out;
6183 status = decode_putfh(xdr);
6184 if (status)
6185 goto out;
6186 status = decode_savefh(xdr);
6187 if (status)
6188 goto out;
6189 status = decode_putfh(xdr);
6190 if (status)
6191 goto out;
6192 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6193out:
6194 return status;
6195}
6196
6197/*
6198 * Decode LINK response
6199 */
6200static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6201 struct nfs4_link_res *res)
6202{
6203 struct compound_hdr hdr;
6204 int status;
6205
6206 status = decode_compound_hdr(xdr, &hdr);
6207 if (status)
6208 goto out;
6209 status = decode_sequence(xdr, &res->seq_res, rqstp);
6210 if (status)
6211 goto out;
6212 status = decode_putfh(xdr);
6213 if (status)
6214 goto out;
6215 status = decode_savefh(xdr);
6216 if (status)
6217 goto out;
6218 status = decode_putfh(xdr);
6219 if (status)
6220 goto out;
6221 status = decode_link(xdr, &res->cinfo);
6222 if (status)
6223 goto out;
6224 /*
6225 * Note order: OP_LINK leaves the directory as the current
6226 * filehandle.
6227 */
6228 status = decode_restorefh(xdr);
6229 if (status)
6230 goto out;
6231 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6232out:
6233 return status;
6234}
6235
6236/*
6237 * Decode CREATE response
6238 */
6239static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6240 struct nfs4_create_res *res)
6241{
6242 struct compound_hdr hdr;
6243 int status;
6244
6245 status = decode_compound_hdr(xdr, &hdr);
6246 if (status)
6247 goto out;
6248 status = decode_sequence(xdr, &res->seq_res, rqstp);
6249 if (status)
6250 goto out;
6251 status = decode_putfh(xdr);
6252 if (status)
6253 goto out;
6254 status = decode_create(xdr, &res->dir_cinfo);
6255 if (status)
6256 goto out;
6257 status = decode_getfh(xdr, res->fh);
6258 if (status)
6259 goto out;
6260 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6261out:
6262 return status;
6263}
6264
6265/*
6266 * Decode SYMLINK response
6267 */
6268static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6269 struct nfs4_create_res *res)
6270{
6271 return nfs4_xdr_dec_create(rqstp, xdr, res);
6272}
6273
6274/*
6275 * Decode GETATTR response
6276 */
6277static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6278 struct nfs4_getattr_res *res)
6279{
6280 struct compound_hdr hdr;
6281 int status;
6282
6283 status = decode_compound_hdr(xdr, &hdr);
6284 if (status)
6285 goto out;
6286 status = decode_sequence(xdr, &res->seq_res, rqstp);
6287 if (status)
6288 goto out;
6289 status = decode_putfh(xdr);
6290 if (status)
6291 goto out;
6292 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6293out:
6294 return status;
6295}
6296
6297/*
6298 * Encode an SETACL request
6299 */
6300static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6301 struct nfs_setaclargs *args)
6302{
6303 struct compound_hdr hdr = {
6304 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6305 };
6306
6307 encode_compound_hdr(xdr, req, &hdr);
6308 encode_sequence(xdr, &args->seq_args, &hdr);
6309 encode_putfh(xdr, args->fh, &hdr);
6310 encode_setacl(xdr, args, &hdr);
6311 encode_nops(&hdr);
6312}
6313
6314/*
6315 * Decode SETACL response
6316 */
6317static int
6318nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6319 struct nfs_setaclres *res)
6320{
6321 struct compound_hdr hdr;
6322 int status;
6323
6324 status = decode_compound_hdr(xdr, &hdr);
6325 if (status)
6326 goto out;
6327 status = decode_sequence(xdr, &res->seq_res, rqstp);
6328 if (status)
6329 goto out;
6330 status = decode_putfh(xdr);
6331 if (status)
6332 goto out;
6333 status = decode_setattr(xdr);
6334out:
6335 return status;
6336}
6337
6338/*
6339 * Decode GETACL response
6340 */
6341static int
6342nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6343 struct nfs_getaclres *res)
6344{
6345 struct compound_hdr hdr;
6346 int status;
6347
6348 if (res->acl_scratch != NULL) {
6349 void *p = page_address(res->acl_scratch);
6350 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
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_getacl(xdr, rqstp, res);
6362
6363out:
6364 return status;
6365}
6366
6367/*
6368 * Decode CLOSE response
6369 */
6370static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6371 struct nfs_closeres *res)
6372{
6373 struct compound_hdr hdr;
6374 int status;
6375
6376 status = decode_compound_hdr(xdr, &hdr);
6377 if (status)
6378 goto out;
6379 status = decode_sequence(xdr, &res->seq_res, rqstp);
6380 if (status)
6381 goto out;
6382 status = decode_putfh(xdr);
6383 if (status)
6384 goto out;
6385 status = decode_close(xdr, res);
6386 if (status != 0)
6387 goto out;
6388 /*
6389 * Note: Server may do delete on close for this file
6390 * in which case the getattr call will fail with
6391 * an ESTALE error. Shouldn't be a problem,
6392 * though, since fattr->valid will remain unset.
6393 */
6394 decode_getfattr(xdr, res->fattr, res->server);
6395out:
6396 return status;
6397}
6398
6399/*
6400 * Decode OPEN response
6401 */
6402static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6403 struct nfs_openres *res)
6404{
6405 struct compound_hdr hdr;
6406 int status;
6407
6408 status = decode_compound_hdr(xdr, &hdr);
6409 if (status)
6410 goto out;
6411 status = decode_sequence(xdr, &res->seq_res, rqstp);
6412 if (status)
6413 goto out;
6414 status = decode_putfh(xdr);
6415 if (status)
6416 goto out;
6417 status = decode_open(xdr, res);
6418 if (status)
6419 goto out;
6420 status = decode_getfh(xdr, &res->fh);
6421 if (status)
6422 goto out;
6423 if (res->access_request)
6424 decode_access(xdr, &res->access_supported, &res->access_result);
6425 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6426out:
6427 return status;
6428}
6429
6430/*
6431 * Decode OPEN_CONFIRM response
6432 */
6433static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6434 struct xdr_stream *xdr,
6435 struct nfs_open_confirmres *res)
6436{
6437 struct compound_hdr hdr;
6438 int status;
6439
6440 status = decode_compound_hdr(xdr, &hdr);
6441 if (status)
6442 goto out;
6443 status = decode_putfh(xdr);
6444 if (status)
6445 goto out;
6446 status = decode_open_confirm(xdr, res);
6447out:
6448 return status;
6449}
6450
6451/*
6452 * Decode OPEN response
6453 */
6454static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6455 struct xdr_stream *xdr,
6456 struct nfs_openres *res)
6457{
6458 struct compound_hdr hdr;
6459 int status;
6460
6461 status = decode_compound_hdr(xdr, &hdr);
6462 if (status)
6463 goto out;
6464 status = decode_sequence(xdr, &res->seq_res, rqstp);
6465 if (status)
6466 goto out;
6467 status = decode_putfh(xdr);
6468 if (status)
6469 goto out;
6470 status = decode_open(xdr, res);
6471 if (status)
6472 goto out;
6473 if (res->access_request)
6474 decode_access(xdr, &res->access_supported, &res->access_result);
6475 decode_getfattr(xdr, res->f_attr, res->server);
6476out:
6477 return status;
6478}
6479
6480/*
6481 * Decode SETATTR response
6482 */
6483static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6484 struct xdr_stream *xdr,
6485 struct nfs_setattrres *res)
6486{
6487 struct compound_hdr hdr;
6488 int status;
6489
6490 status = decode_compound_hdr(xdr, &hdr);
6491 if (status)
6492 goto out;
6493 status = decode_sequence(xdr, &res->seq_res, rqstp);
6494 if (status)
6495 goto out;
6496 status = decode_putfh(xdr);
6497 if (status)
6498 goto out;
6499 status = decode_setattr(xdr);
6500 if (status)
6501 goto out;
6502 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6503out:
6504 return status;
6505}
6506
6507/*
6508 * Decode LOCK response
6509 */
6510static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6511 struct nfs_lock_res *res)
6512{
6513 struct compound_hdr hdr;
6514 int status;
6515
6516 status = decode_compound_hdr(xdr, &hdr);
6517 if (status)
6518 goto out;
6519 status = decode_sequence(xdr, &res->seq_res, rqstp);
6520 if (status)
6521 goto out;
6522 status = decode_putfh(xdr);
6523 if (status)
6524 goto out;
6525 status = decode_lock(xdr, res);
6526out:
6527 return status;
6528}
6529
6530/*
6531 * Decode LOCKT response
6532 */
6533static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6534 struct nfs_lockt_res *res)
6535{
6536 struct compound_hdr hdr;
6537 int status;
6538
6539 status = decode_compound_hdr(xdr, &hdr);
6540 if (status)
6541 goto out;
6542 status = decode_sequence(xdr, &res->seq_res, rqstp);
6543 if (status)
6544 goto out;
6545 status = decode_putfh(xdr);
6546 if (status)
6547 goto out;
6548 status = decode_lockt(xdr, res);
6549out:
6550 return status;
6551}
6552
6553/*
6554 * Decode LOCKU response
6555 */
6556static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6557 struct nfs_locku_res *res)
6558{
6559 struct compound_hdr hdr;
6560 int status;
6561
6562 status = decode_compound_hdr(xdr, &hdr);
6563 if (status)
6564 goto out;
6565 status = decode_sequence(xdr, &res->seq_res, rqstp);
6566 if (status)
6567 goto out;
6568 status = decode_putfh(xdr);
6569 if (status)
6570 goto out;
6571 status = decode_locku(xdr, res);
6572out:
6573 return status;
6574}
6575
6576static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6577 struct xdr_stream *xdr, void *dummy)
6578{
6579 struct compound_hdr hdr;
6580 int status;
6581
6582 status = decode_compound_hdr(xdr, &hdr);
6583 if (!status)
6584 status = decode_release_lockowner(xdr);
6585 return status;
6586}
6587
6588/*
6589 * Decode READLINK response
6590 */
6591static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6592 struct xdr_stream *xdr,
6593 struct nfs4_readlink_res *res)
6594{
6595 struct compound_hdr hdr;
6596 int status;
6597
6598 status = decode_compound_hdr(xdr, &hdr);
6599 if (status)
6600 goto out;
6601 status = decode_sequence(xdr, &res->seq_res, rqstp);
6602 if (status)
6603 goto out;
6604 status = decode_putfh(xdr);
6605 if (status)
6606 goto out;
6607 status = decode_readlink(xdr, rqstp);
6608out:
6609 return status;
6610}
6611
6612/*
6613 * Decode READDIR response
6614 */
6615static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6616 struct nfs4_readdir_res *res)
6617{
6618 struct compound_hdr hdr;
6619 int status;
6620
6621 status = decode_compound_hdr(xdr, &hdr);
6622 if (status)
6623 goto out;
6624 status = decode_sequence(xdr, &res->seq_res, rqstp);
6625 if (status)
6626 goto out;
6627 status = decode_putfh(xdr);
6628 if (status)
6629 goto out;
6630 status = decode_readdir(xdr, rqstp, res);
6631out:
6632 return status;
6633}
6634
6635/*
6636 * Decode Read response
6637 */
6638static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6639 struct nfs_readres *res)
6640{
6641 struct compound_hdr hdr;
6642 int status;
6643
6644 status = decode_compound_hdr(xdr, &hdr);
6645 if (status)
6646 goto out;
6647 status = decode_sequence(xdr, &res->seq_res, rqstp);
6648 if (status)
6649 goto out;
6650 status = decode_putfh(xdr);
6651 if (status)
6652 goto out;
6653 status = decode_read(xdr, rqstp, res);
6654 if (!status)
6655 status = res->count;
6656out:
6657 return status;
6658}
6659
6660/*
6661 * Decode WRITE response
6662 */
6663static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6664 struct nfs_writeres *res)
6665{
6666 struct compound_hdr hdr;
6667 int status;
6668
6669 status = decode_compound_hdr(xdr, &hdr);
6670 if (status)
6671 goto out;
6672 status = decode_sequence(xdr, &res->seq_res, rqstp);
6673 if (status)
6674 goto out;
6675 status = decode_putfh(xdr);
6676 if (status)
6677 goto out;
6678 status = decode_write(xdr, res);
6679 if (status)
6680 goto out;
6681 if (res->fattr)
6682 decode_getfattr(xdr, res->fattr, res->server);
6683 if (!status)
6684 status = res->count;
6685out:
6686 return status;
6687}
6688
6689/*
6690 * Decode COMMIT response
6691 */
6692static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6693 struct nfs_commitres *res)
6694{
6695 struct compound_hdr hdr;
6696 int status;
6697
6698 status = decode_compound_hdr(xdr, &hdr);
6699 if (status)
6700 goto out;
6701 status = decode_sequence(xdr, &res->seq_res, rqstp);
6702 if (status)
6703 goto out;
6704 status = decode_putfh(xdr);
6705 if (status)
6706 goto out;
6707 status = decode_commit(xdr, res);
6708out:
6709 return status;
6710}
6711
6712/*
6713 * Decode FSINFO response
6714 */
6715static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6716 struct nfs4_fsinfo_res *res)
6717{
6718 struct compound_hdr hdr;
6719 int status;
6720
6721 status = decode_compound_hdr(xdr, &hdr);
6722 if (!status)
6723 status = decode_sequence(xdr, &res->seq_res, req);
6724 if (!status)
6725 status = decode_putfh(xdr);
6726 if (!status)
6727 status = decode_fsinfo(xdr, res->fsinfo);
6728 return status;
6729}
6730
6731/*
6732 * Decode PATHCONF response
6733 */
6734static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6735 struct nfs4_pathconf_res *res)
6736{
6737 struct compound_hdr hdr;
6738 int status;
6739
6740 status = decode_compound_hdr(xdr, &hdr);
6741 if (!status)
6742 status = decode_sequence(xdr, &res->seq_res, req);
6743 if (!status)
6744 status = decode_putfh(xdr);
6745 if (!status)
6746 status = decode_pathconf(xdr, res->pathconf);
6747 return status;
6748}
6749
6750/*
6751 * Decode STATFS response
6752 */
6753static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6754 struct nfs4_statfs_res *res)
6755{
6756 struct compound_hdr hdr;
6757 int status;
6758
6759 status = decode_compound_hdr(xdr, &hdr);
6760 if (!status)
6761 status = decode_sequence(xdr, &res->seq_res, req);
6762 if (!status)
6763 status = decode_putfh(xdr);
6764 if (!status)
6765 status = decode_statfs(xdr, res->fsstat);
6766 return status;
6767}
6768
6769/*
6770 * Decode GETATTR_BITMAP response
6771 */
6772static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6773 struct xdr_stream *xdr,
6774 struct nfs4_server_caps_res *res)
6775{
6776 struct compound_hdr hdr;
6777 int status;
6778
6779 status = decode_compound_hdr(xdr, &hdr);
6780 if (status)
6781 goto out;
6782 status = decode_sequence(xdr, &res->seq_res, req);
6783 if (status)
6784 goto out;
6785 status = decode_putfh(xdr);
6786 if (status)
6787 goto out;
6788 status = decode_server_caps(xdr, res);
6789out:
6790 return status;
6791}
6792
6793/*
6794 * Decode RENEW response
6795 */
6796static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6797 void *__unused)
6798{
6799 struct compound_hdr hdr;
6800 int status;
6801
6802 status = decode_compound_hdr(xdr, &hdr);
6803 if (!status)
6804 status = decode_renew(xdr);
6805 return status;
6806}
6807
6808/*
6809 * Decode SETCLIENTID response
6810 */
6811static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6812 struct xdr_stream *xdr,
6813 struct nfs4_setclientid_res *res)
6814{
6815 struct compound_hdr hdr;
6816 int status;
6817
6818 status = decode_compound_hdr(xdr, &hdr);
6819 if (!status)
6820 status = decode_setclientid(xdr, res);
6821 return status;
6822}
6823
6824/*
6825 * Decode SETCLIENTID_CONFIRM response
6826 */
6827static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6828 struct xdr_stream *xdr)
6829{
6830 struct compound_hdr hdr;
6831 int status;
6832
6833 status = decode_compound_hdr(xdr, &hdr);
6834 if (!status)
6835 status = decode_setclientid_confirm(xdr);
6836 return status;
6837}
6838
6839/*
6840 * Decode DELEGRETURN response
6841 */
6842static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6843 struct xdr_stream *xdr,
6844 struct nfs4_delegreturnres *res)
6845{
6846 struct compound_hdr hdr;
6847 int status;
6848
6849 status = decode_compound_hdr(xdr, &hdr);
6850 if (status)
6851 goto out;
6852 status = decode_sequence(xdr, &res->seq_res, rqstp);
6853 if (status)
6854 goto out;
6855 status = decode_putfh(xdr);
6856 if (status != 0)
6857 goto out;
6858 status = decode_getfattr(xdr, res->fattr, res->server);
6859 if (status != 0)
6860 goto out;
6861 status = decode_delegreturn(xdr);
6862out:
6863 return status;
6864}
6865
6866/*
6867 * Decode FS_LOCATIONS response
6868 */
6869static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6870 struct xdr_stream *xdr,
6871 struct nfs4_fs_locations_res *res)
6872{
6873 struct compound_hdr hdr;
6874 int status;
6875
6876 status = decode_compound_hdr(xdr, &hdr);
6877 if (status)
6878 goto out;
6879 status = decode_sequence(xdr, &res->seq_res, req);
6880 if (status)
6881 goto out;
6882 status = decode_putfh(xdr);
6883 if (status)
6884 goto out;
6885 if (res->migration) {
6886 xdr_enter_page(xdr, PAGE_SIZE);
6887 status = decode_getfattr_generic(xdr,
6888 &res->fs_locations->fattr,
6889 NULL, res->fs_locations,
6890 NULL, res->fs_locations->server);
6891 if (status)
6892 goto out;
6893 if (res->renew)
6894 status = decode_renew(xdr);
6895 } else {
6896 status = decode_lookup(xdr);
6897 if (status)
6898 goto out;
6899 xdr_enter_page(xdr, PAGE_SIZE);
6900 status = decode_getfattr_generic(xdr,
6901 &res->fs_locations->fattr,
6902 NULL, res->fs_locations,
6903 NULL, res->fs_locations->server);
6904 }
6905out:
6906 return status;
6907}
6908
6909/*
6910 * Decode SECINFO response
6911 */
6912static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6913 struct xdr_stream *xdr,
6914 struct nfs4_secinfo_res *res)
6915{
6916 struct compound_hdr hdr;
6917 int status;
6918
6919 status = decode_compound_hdr(xdr, &hdr);
6920 if (status)
6921 goto out;
6922 status = decode_sequence(xdr, &res->seq_res, rqstp);
6923 if (status)
6924 goto out;
6925 status = decode_putfh(xdr);
6926 if (status)
6927 goto out;
6928 status = decode_secinfo(xdr, res);
6929out:
6930 return status;
6931}
6932
6933/*
6934 * Decode FSID_PRESENT response
6935 */
6936static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
6937 struct xdr_stream *xdr,
6938 struct nfs4_fsid_present_res *res)
6939{
6940 struct compound_hdr hdr;
6941 int status;
6942
6943 status = decode_compound_hdr(xdr, &hdr);
6944 if (status)
6945 goto out;
6946 status = decode_sequence(xdr, &res->seq_res, rqstp);
6947 if (status)
6948 goto out;
6949 status = decode_putfh(xdr);
6950 if (status)
6951 goto out;
6952 status = decode_getfh(xdr, res->fh);
6953 if (status)
6954 goto out;
6955 if (res->renew)
6956 status = decode_renew(xdr);
6957out:
6958 return status;
6959}
6960
6961#if defined(CONFIG_NFS_V4_1)
6962/*
6963 * Decode BIND_CONN_TO_SESSION response
6964 */
6965static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6966 struct xdr_stream *xdr,
6967 void *res)
6968{
6969 struct compound_hdr hdr;
6970 int status;
6971
6972 status = decode_compound_hdr(xdr, &hdr);
6973 if (!status)
6974 status = decode_bind_conn_to_session(xdr, res);
6975 return status;
6976}
6977
6978/*
6979 * Decode EXCHANGE_ID response
6980 */
6981static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6982 struct xdr_stream *xdr,
6983 void *res)
6984{
6985 struct compound_hdr hdr;
6986 int status;
6987
6988 status = decode_compound_hdr(xdr, &hdr);
6989 if (!status)
6990 status = decode_exchange_id(xdr, res);
6991 return status;
6992}
6993
6994/*
6995 * Decode CREATE_SESSION response
6996 */
6997static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6998 struct xdr_stream *xdr,
6999 struct nfs41_create_session_res *res)
7000{
7001 struct compound_hdr hdr;
7002 int status;
7003
7004 status = decode_compound_hdr(xdr, &hdr);
7005 if (!status)
7006 status = decode_create_session(xdr, res);
7007 return status;
7008}
7009
7010/*
7011 * Decode DESTROY_SESSION response
7012 */
7013static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7014 struct xdr_stream *xdr,
7015 void *res)
7016{
7017 struct compound_hdr hdr;
7018 int status;
7019
7020 status = decode_compound_hdr(xdr, &hdr);
7021 if (!status)
7022 status = decode_destroy_session(xdr, res);
7023 return status;
7024}
7025
7026/*
7027 * Decode DESTROY_CLIENTID response
7028 */
7029static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7030 struct xdr_stream *xdr,
7031 void *res)
7032{
7033 struct compound_hdr hdr;
7034 int status;
7035
7036 status = decode_compound_hdr(xdr, &hdr);
7037 if (!status)
7038 status = decode_destroy_clientid(xdr, res);
7039 return status;
7040}
7041
7042/*
7043 * Decode SEQUENCE response
7044 */
7045static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7046 struct xdr_stream *xdr,
7047 struct nfs4_sequence_res *res)
7048{
7049 struct compound_hdr hdr;
7050 int status;
7051
7052 status = decode_compound_hdr(xdr, &hdr);
7053 if (!status)
7054 status = decode_sequence(xdr, res, rqstp);
7055 return status;
7056}
7057
7058/*
7059 * Decode GET_LEASE_TIME response
7060 */
7061static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7062 struct xdr_stream *xdr,
7063 struct nfs4_get_lease_time_res *res)
7064{
7065 struct compound_hdr hdr;
7066 int status;
7067
7068 status = decode_compound_hdr(xdr, &hdr);
7069 if (!status)
7070 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7071 if (!status)
7072 status = decode_putrootfh(xdr);
7073 if (!status)
7074 status = decode_fsinfo(xdr, res->lr_fsinfo);
7075 return status;
7076}
7077
7078/*
7079 * Decode RECLAIM_COMPLETE response
7080 */
7081static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7082 struct xdr_stream *xdr,
7083 struct nfs41_reclaim_complete_res *res)
7084{
7085 struct compound_hdr hdr;
7086 int status;
7087
7088 status = decode_compound_hdr(xdr, &hdr);
7089 if (!status)
7090 status = decode_sequence(xdr, &res->seq_res, rqstp);
7091 if (!status)
7092 status = decode_reclaim_complete(xdr, (void *)NULL);
7093 return status;
7094}
7095
7096/*
7097 * Decode GETDEVICELIST response
7098 */
7099static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
7100 struct xdr_stream *xdr,
7101 struct nfs4_getdevicelist_res *res)
7102{
7103 struct compound_hdr hdr;
7104 int status;
7105
7106 dprintk("encoding getdevicelist!\n");
7107
7108 status = decode_compound_hdr(xdr, &hdr);
7109 if (status != 0)
7110 goto out;
7111 status = decode_sequence(xdr, &res->seq_res, rqstp);
7112 if (status != 0)
7113 goto out;
7114 status = decode_putfh(xdr);
7115 if (status != 0)
7116 goto out;
7117 status = decode_getdevicelist(xdr, res->devlist);
7118out:
7119 return status;
7120}
7121
7122/*
7123 * Decode GETDEVINFO response
7124 */
7125static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7126 struct xdr_stream *xdr,
7127 struct nfs4_getdeviceinfo_res *res)
7128{
7129 struct compound_hdr hdr;
7130 int status;
7131
7132 status = decode_compound_hdr(xdr, &hdr);
7133 if (status != 0)
7134 goto out;
7135 status = decode_sequence(xdr, &res->seq_res, rqstp);
7136 if (status != 0)
7137 goto out;
7138 status = decode_getdeviceinfo(xdr, res->pdev);
7139out:
7140 return status;
7141}
7142
7143/*
7144 * Decode LAYOUTGET response
7145 */
7146static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7147 struct xdr_stream *xdr,
7148 struct nfs4_layoutget_res *res)
7149{
7150 struct compound_hdr hdr;
7151 int status;
7152
7153 status = decode_compound_hdr(xdr, &hdr);
7154 if (status)
7155 goto out;
7156 status = decode_sequence(xdr, &res->seq_res, rqstp);
7157 if (status)
7158 goto out;
7159 status = decode_putfh(xdr);
7160 if (status)
7161 goto out;
7162 status = decode_layoutget(xdr, rqstp, res);
7163out:
7164 return status;
7165}
7166
7167/*
7168 * Decode LAYOUTRETURN response
7169 */
7170static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7171 struct xdr_stream *xdr,
7172 struct nfs4_layoutreturn_res *res)
7173{
7174 struct compound_hdr hdr;
7175 int status;
7176
7177 status = decode_compound_hdr(xdr, &hdr);
7178 if (status)
7179 goto out;
7180 status = decode_sequence(xdr, &res->seq_res, rqstp);
7181 if (status)
7182 goto out;
7183 status = decode_putfh(xdr);
7184 if (status)
7185 goto out;
7186 status = decode_layoutreturn(xdr, res);
7187out:
7188 return status;
7189}
7190
7191/*
7192 * Decode LAYOUTCOMMIT response
7193 */
7194static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7195 struct xdr_stream *xdr,
7196 struct nfs4_layoutcommit_res *res)
7197{
7198 struct compound_hdr hdr;
7199 int status;
7200
7201 status = decode_compound_hdr(xdr, &hdr);
7202 if (status)
7203 goto out;
7204 status = decode_sequence(xdr, &res->seq_res, rqstp);
7205 if (status)
7206 goto out;
7207 status = decode_putfh(xdr);
7208 if (status)
7209 goto out;
7210 status = decode_layoutcommit(xdr, rqstp, res);
7211 if (status)
7212 goto out;
7213 decode_getfattr(xdr, res->fattr, res->server);
7214out:
7215 return status;
7216}
7217
7218/*
7219 * Decode SECINFO_NO_NAME response
7220 */
7221static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7222 struct xdr_stream *xdr,
7223 struct nfs4_secinfo_res *res)
7224{
7225 struct compound_hdr hdr;
7226 int status;
7227
7228 status = decode_compound_hdr(xdr, &hdr);
7229 if (status)
7230 goto out;
7231 status = decode_sequence(xdr, &res->seq_res, rqstp);
7232 if (status)
7233 goto out;
7234 status = decode_putrootfh(xdr);
7235 if (status)
7236 goto out;
7237 status = decode_secinfo_no_name(xdr, res);
7238out:
7239 return status;
7240}
7241
7242/*
7243 * Decode TEST_STATEID response
7244 */
7245static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7246 struct xdr_stream *xdr,
7247 struct nfs41_test_stateid_res *res)
7248{
7249 struct compound_hdr hdr;
7250 int status;
7251
7252 status = decode_compound_hdr(xdr, &hdr);
7253 if (status)
7254 goto out;
7255 status = decode_sequence(xdr, &res->seq_res, rqstp);
7256 if (status)
7257 goto out;
7258 status = decode_test_stateid(xdr, res);
7259out:
7260 return status;
7261}
7262
7263/*
7264 * Decode FREE_STATEID response
7265 */
7266static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7267 struct xdr_stream *xdr,
7268 struct nfs41_free_stateid_res *res)
7269{
7270 struct compound_hdr hdr;
7271 int status;
7272
7273 status = decode_compound_hdr(xdr, &hdr);
7274 if (status)
7275 goto out;
7276 status = decode_sequence(xdr, &res->seq_res, rqstp);
7277 if (status)
7278 goto out;
7279 status = decode_free_stateid(xdr, res);
7280out:
7281 return status;
7282}
7283#endif /* CONFIG_NFS_V4_1 */
7284
7285/**
7286 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7287 * the local page cache.
7288 * @xdr: XDR stream where entry resides
7289 * @entry: buffer to fill in with entry data
7290 * @plus: boolean indicating whether this should be a readdirplus entry
7291 *
7292 * Returns zero if successful, otherwise a negative errno value is
7293 * returned.
7294 *
7295 * This function is not invoked during READDIR reply decoding, but
7296 * rather whenever an application invokes the getdents(2) system call
7297 * on a directory already in our cache.
7298 */
7299int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7300 int plus)
7301{
7302 unsigned int savep;
7303 uint32_t bitmap[3] = {0};
7304 uint32_t len;
7305 __be32 *p = xdr_inline_decode(xdr, 4);
7306 if (unlikely(!p))
7307 goto out_overflow;
7308 if (*p == xdr_zero) {
7309 p = xdr_inline_decode(xdr, 4);
7310 if (unlikely(!p))
7311 goto out_overflow;
7312 if (*p == xdr_zero)
7313 return -EAGAIN;
7314 entry->eof = 1;
7315 return -EBADCOOKIE;
7316 }
7317
7318 p = xdr_inline_decode(xdr, 12);
7319 if (unlikely(!p))
7320 goto out_overflow;
7321 entry->prev_cookie = entry->cookie;
7322 p = xdr_decode_hyper(p, &entry->cookie);
7323 entry->len = be32_to_cpup(p);
7324
7325 p = xdr_inline_decode(xdr, entry->len);
7326 if (unlikely(!p))
7327 goto out_overflow;
7328 entry->name = (const char *) p;
7329
7330 /*
7331 * In case the server doesn't return an inode number,
7332 * we fake one here. (We don't use inode number 0,
7333 * since glibc seems to choke on it...)
7334 */
7335 entry->ino = 1;
7336 entry->fattr->valid = 0;
7337
7338 if (decode_attr_bitmap(xdr, bitmap) < 0)
7339 goto out_overflow;
7340
7341 if (decode_attr_length(xdr, &len, &savep) < 0)
7342 goto out_overflow;
7343
7344 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7345 NULL, entry->label, entry->server) < 0)
7346 goto out_overflow;
7347 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7348 entry->ino = entry->fattr->mounted_on_fileid;
7349 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7350 entry->ino = entry->fattr->fileid;
7351
7352 entry->d_type = DT_UNKNOWN;
7353 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7354 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7355
7356 return 0;
7357
7358out_overflow:
7359 print_overflow_msg(__func__, xdr);
7360 return -EAGAIN;
7361}
7362
7363/*
7364 * We need to translate between nfs status return values and
7365 * the local errno values which may not be the same.
7366 */
7367static struct {
7368 int stat;
7369 int errno;
7370} nfs_errtbl[] = {
7371 { NFS4_OK, 0 },
7372 { NFS4ERR_PERM, -EPERM },
7373 { NFS4ERR_NOENT, -ENOENT },
7374 { NFS4ERR_IO, -errno_NFSERR_IO},
7375 { NFS4ERR_NXIO, -ENXIO },
7376 { NFS4ERR_ACCESS, -EACCES },
7377 { NFS4ERR_EXIST, -EEXIST },
7378 { NFS4ERR_XDEV, -EXDEV },
7379 { NFS4ERR_NOTDIR, -ENOTDIR },
7380 { NFS4ERR_ISDIR, -EISDIR },
7381 { NFS4ERR_INVAL, -EINVAL },
7382 { NFS4ERR_FBIG, -EFBIG },
7383 { NFS4ERR_NOSPC, -ENOSPC },
7384 { NFS4ERR_ROFS, -EROFS },
7385 { NFS4ERR_MLINK, -EMLINK },
7386 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7387 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7388 { NFS4ERR_DQUOT, -EDQUOT },
7389 { NFS4ERR_STALE, -ESTALE },
7390 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7391 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7392 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7393 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7394 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7395 { NFS4ERR_BADTYPE, -EBADTYPE },
7396 { NFS4ERR_LOCKED, -EAGAIN },
7397 { NFS4ERR_SYMLINK, -ELOOP },
7398 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7399 { NFS4ERR_DEADLOCK, -EDEADLK },
7400 { -1, -EIO }
7401};
7402
7403/*
7404 * Convert an NFS error code to a local one.
7405 * This one is used jointly by NFSv2 and NFSv3.
7406 */
7407static int
7408nfs4_stat_to_errno(int stat)
7409{
7410 int i;
7411 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7412 if (nfs_errtbl[i].stat == stat)
7413 return nfs_errtbl[i].errno;
7414 }
7415 if (stat <= 10000 || stat > 10100) {
7416 /* The server is looney tunes. */
7417 return -EREMOTEIO;
7418 }
7419 /* If we cannot translate the error, the recovery routines should
7420 * handle it.
7421 * Note: remaining NFSv4 error codes have values > 10000, so should
7422 * not conflict with native Linux error codes.
7423 */
7424 return -stat;
7425}
7426
7427#define PROC(proc, argtype, restype) \
7428[NFSPROC4_CLNT_##proc] = { \
7429 .p_proc = NFSPROC4_COMPOUND, \
7430 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7431 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7432 .p_arglen = NFS4_##argtype##_sz, \
7433 .p_replen = NFS4_##restype##_sz, \
7434 .p_statidx = NFSPROC4_CLNT_##proc, \
7435 .p_name = #proc, \
7436}
7437
7438struct rpc_procinfo nfs4_procedures[] = {
7439 PROC(READ, enc_read, dec_read),
7440 PROC(WRITE, enc_write, dec_write),
7441 PROC(COMMIT, enc_commit, dec_commit),
7442 PROC(OPEN, enc_open, dec_open),
7443 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7444 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7445 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7446 PROC(CLOSE, enc_close, dec_close),
7447 PROC(SETATTR, enc_setattr, dec_setattr),
7448 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7449 PROC(RENEW, enc_renew, dec_renew),
7450 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7451 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7452 PROC(LOCK, enc_lock, dec_lock),
7453 PROC(LOCKT, enc_lockt, dec_lockt),
7454 PROC(LOCKU, enc_locku, dec_locku),
7455 PROC(ACCESS, enc_access, dec_access),
7456 PROC(GETATTR, enc_getattr, dec_getattr),
7457 PROC(LOOKUP, enc_lookup, dec_lookup),
7458 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7459 PROC(REMOVE, enc_remove, dec_remove),
7460 PROC(RENAME, enc_rename, dec_rename),
7461 PROC(LINK, enc_link, dec_link),
7462 PROC(SYMLINK, enc_symlink, dec_symlink),
7463 PROC(CREATE, enc_create, dec_create),
7464 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7465 PROC(STATFS, enc_statfs, dec_statfs),
7466 PROC(READLINK, enc_readlink, dec_readlink),
7467 PROC(READDIR, enc_readdir, dec_readdir),
7468 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7469 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7470 PROC(GETACL, enc_getacl, dec_getacl),
7471 PROC(SETACL, enc_setacl, dec_setacl),
7472 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7473 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7474 PROC(SECINFO, enc_secinfo, dec_secinfo),
7475 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7476#if defined(CONFIG_NFS_V4_1)
7477 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7478 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7479 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7480 PROC(SEQUENCE, enc_sequence, dec_sequence),
7481 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7482 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7483 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7484 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7485 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7486 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7487 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7488 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7489 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7490 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7491 PROC(BIND_CONN_TO_SESSION,
7492 enc_bind_conn_to_session, dec_bind_conn_to_session),
7493 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7494#endif /* CONFIG_NFS_V4_1 */
7495};
7496
7497const struct rpc_version nfs_version4 = {
7498 .number = 4,
7499 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7500 .procs = nfs4_procedures
7501};
7502
7503/*
7504 * Local variables:
7505 * c-basic-offset: 8
7506 * End:
7507 */