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NFSv4.1: implement generic pnfs layer write switch
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
CommitLineData
1da177e4
LT		 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>
6c0195a4 11 *
1da177e4
LT		 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>
1da177e4
LT		 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/sunrpc/clnt.h>
2449ea2e 48#include <linux/sunrpc/msg_prot.h>
1da177e4
LT		 49#include <linux/nfs.h>
50#include <linux/nfs4.h>
51#include <linux/nfs_fs.h>
52#include <linux/nfs_idmap.h>
4ce79717 53#include "nfs4_fs.h"
4882ef72 54#include "internal.h"
b1f69b75 55#include "pnfs.h"
1da177e4
LT		 56
57#define NFSDBG_FACILITY NFSDBG_XDR
58
59/* Mapping from NFS error code to "errno" error code. */
60#define errno_NFSERR_IO EIO
61
0a8ea437 62static int nfs4_stat_to_errno(int);
1da177e4
LT		 63
64/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
65#ifdef DEBUG
66#define NFS4_MAXTAGLEN 20
67#else
68#define NFS4_MAXTAGLEN 0
69#endif
70
6c0195a4 71/* lock,open owner id:
9f958ab8 72 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
1da177e4 73 */
d035c36c
TM		 74#define open_owner_id_maxsz (1 + 1 + 4)
75#define lock_owner_id_maxsz (1 + 1 + 4)
9104a55d 76#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1da177e4
LT		 77#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
79#define op_encode_hdr_maxsz (1)
80#define op_decode_hdr_maxsz (2)
9104a55d
TM		 81#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
83#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
84#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1da177e4
LT		 85#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
86 (NFS4_FHSIZE >> 2))
87#define decode_putfh_maxsz (op_decode_hdr_maxsz)
88#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
89#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
90#define encode_getfh_maxsz (op_encode_hdr_maxsz)
91#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
92 ((3+NFS4_FHSIZE) >> 2))
96928206
BF		 93#define nfs4_fattr_bitmap_maxsz 3
94#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 95#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
96#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
bd625ba8
TM		 97#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
98#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
96928206
BF		 99/* This is based on getfattr, which uses the most attributes: */
100#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
bd625ba8 101 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
96928206
BF		 102#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
103 nfs4_fattr_value_maxsz)
104#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
9104a55d
TM		 105#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
106 1 + 2 + 1 + \
107 nfs4_owner_maxsz + \
108 nfs4_group_maxsz + \
109 4 + 4)
1da177e4
LT		 110#define encode_savefh_maxsz (op_encode_hdr_maxsz)
111#define decode_savefh_maxsz (op_decode_hdr_maxsz)
56ae19f3
TM		 112#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
113#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
2f42b5d0 114#define encode_fsinfo_maxsz (encode_getattr_maxsz)
1da177e4
LT		 115#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
116#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
117#define decode_renew_maxsz (op_decode_hdr_maxsz)
118#define encode_setclientid_maxsz \
119 (op_encode_hdr_maxsz + \
cc38bac3
CL		 120 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
121 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
122 1 /* sc_prog */ + \
123 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
124 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
125 1) /* sc_cb_ident */
1da177e4
LT		 126#define decode_setclientid_maxsz \
127 (op_decode_hdr_maxsz + \
128 2 + \
129 1024) /* large value for CLID_INUSE */
130#define encode_setclientid_confirm_maxsz \
131 (op_encode_hdr_maxsz + \
132 3 + (NFS4_VERIFIER_SIZE >> 2))
133#define decode_setclientid_confirm_maxsz \
134 (op_decode_hdr_maxsz)
e6889620
TM		 135#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
136#define decode_lookup_maxsz (op_decode_hdr_maxsz)
2cebf828
TM		 137#define encode_share_access_maxsz \
138 (2)
4882ef72 139#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
2cebf828
TM		 140#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
141#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
142#define encode_open_maxsz (op_encode_hdr_maxsz + \
143 2 + encode_share_access_maxsz + 2 + \
144 open_owner_id_maxsz + \
145 encode_opentype_maxsz + \
146 encode_claim_null_maxsz)
147#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
9104a55d 148#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
2cebf828
TM		 149 decode_ace_maxsz)
150#define decode_change_info_maxsz (5)
151#define decode_open_maxsz (op_decode_hdr_maxsz + \
9104a55d 152 decode_stateid_maxsz + \
2cebf828
TM		 153 decode_change_info_maxsz + 1 + \
154 nfs4_fattr_bitmap_maxsz + \
155 decode_delegation_maxsz)
9104a55d
TM		 156#define encode_open_confirm_maxsz \
157 (op_encode_hdr_maxsz + \
158 encode_stateid_maxsz + 1)
159#define decode_open_confirm_maxsz \
160 (op_decode_hdr_maxsz + \
161 decode_stateid_maxsz)
162#define encode_open_downgrade_maxsz \
163 (op_encode_hdr_maxsz + \
164 encode_stateid_maxsz + 1 + \
165 encode_share_access_maxsz)
166#define decode_open_downgrade_maxsz \
167 (op_decode_hdr_maxsz + \
168 decode_stateid_maxsz)
169#define encode_close_maxsz (op_encode_hdr_maxsz + \
170 1 + encode_stateid_maxsz)
171#define decode_close_maxsz (op_decode_hdr_maxsz + \
172 decode_stateid_maxsz)
173#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
174 encode_stateid_maxsz + \
175 encode_attrs_maxsz)
176#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
177 nfs4_fattr_bitmap_maxsz)
178#define encode_read_maxsz (op_encode_hdr_maxsz + \
179 encode_stateid_maxsz + 3)
180#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
181#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
182 2 + encode_verifier_maxsz + 5)
183#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
184 decode_verifier_maxsz)
185#define encode_readlink_maxsz (op_encode_hdr_maxsz)
186#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
187#define encode_write_maxsz (op_encode_hdr_maxsz + \
188 encode_stateid_maxsz + 4)
189#define decode_write_maxsz (op_decode_hdr_maxsz + \
190 2 + decode_verifier_maxsz)
191#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
192#define decode_commit_maxsz (op_decode_hdr_maxsz + \
193 decode_verifier_maxsz)
1da177e4
LT		 194#define encode_remove_maxsz (op_encode_hdr_maxsz + \
195 nfs4_name_maxsz)
6ce18391
BH		 196#define decode_remove_maxsz (op_decode_hdr_maxsz + \
197 decode_change_info_maxsz)
1da177e4
LT		 198#define encode_rename_maxsz (op_encode_hdr_maxsz + \
199 2 * nfs4_name_maxsz)
6ce18391
BH		 200#define decode_rename_maxsz (op_decode_hdr_maxsz + \
201 decode_change_info_maxsz + \
202 decode_change_info_maxsz)
1da177e4
LT		 203#define encode_link_maxsz (op_encode_hdr_maxsz + \
204 nfs4_name_maxsz)
6ce18391 205#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
daccbded 206#define encode_lockowner_maxsz (7)
9104a55d
TM		 207#define encode_lock_maxsz (op_encode_hdr_maxsz + \
208 7 + \
daccbded
TM		 209 1 + encode_stateid_maxsz + 1 + \
210 encode_lockowner_maxsz)
9104a55d
TM		 211#define decode_lock_denied_maxsz \
212 (8 + decode_lockowner_maxsz)
213#define decode_lock_maxsz (op_decode_hdr_maxsz + \
214 decode_lock_denied_maxsz)
daccbded
TM		 215#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
216 encode_lockowner_maxsz)
9104a55d
TM		 217#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
218 decode_lock_denied_maxsz)
219#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
220 encode_stateid_maxsz + \
221 4)
222#define decode_locku_maxsz (op_decode_hdr_maxsz + \
223 decode_stateid_maxsz)
d3c7b7cc
TM		 224#define encode_release_lockowner_maxsz \
225 (op_encode_hdr_maxsz + \
226 encode_lockowner_maxsz)
227#define decode_release_lockowner_maxsz \
228 (op_decode_hdr_maxsz)
9104a55d
TM		 229#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
230#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
1da177e4
LT		 231#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
232 1 + nfs4_name_maxsz + \
94a6d753 233 1 + \
96928206 234 nfs4_fattr_maxsz)
1da177e4
LT		 235#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
236#define encode_create_maxsz (op_encode_hdr_maxsz + \
9104a55d
TM		 237 1 + 2 + nfs4_name_maxsz + \
238 encode_attrs_maxsz)
2cebf828
TM		 239#define decode_create_maxsz (op_decode_hdr_maxsz + \
240 decode_change_info_maxsz + \
241 nfs4_fattr_bitmap_maxsz)
9104a55d
TM		 242#define encode_statfs_maxsz (encode_getattr_maxsz)
243#define decode_statfs_maxsz (decode_getattr_maxsz)
1da177e4
LT		 244#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
245#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
9104a55d
TM		 246#define encode_getacl_maxsz (encode_getattr_maxsz)
247#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
248 nfs4_fattr_bitmap_maxsz + 1)
249#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
250 encode_stateid_maxsz + 3)
251#define decode_setacl_maxsz (decode_setattr_maxsz)
e6889620
TM		 252#define encode_fs_locations_maxsz \
253 (encode_getattr_maxsz)
254#define decode_fs_locations_maxsz \
255 (0)
9b7b9fcc
AA		 256
257#if defined(CONFIG_NFS_V4_1)
fc931582
AA		 258#define NFS4_MAX_MACHINE_NAME_LEN (64)
259
99fe60d0
BH		 260#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
261 encode_verifier_maxsz + \
262 1 /* co_ownerid.len */ + \
263 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
264 1 /* flags */ + \
265 1 /* spa_how */ + \
266 0 /* SP4_NONE (for now) */ + \
267 1 /* zero implemetation id array */)
268#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
269 2 /* eir_clientid */ + \
270 1 /* eir_sequenceid */ + \
271 1 /* eir_flags */ + \
272 1 /* spr_how */ + \
273 0 /* SP4_NONE (for now) */ + \
274 2 /* eir_server_owner.so_minor_id */ + \
275 /* eir_server_owner.so_major_id<> */ \
276 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
277 /* eir_server_scope<> */ \
278 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
279 1 /* eir_server_impl_id array length */ + \
280 0 /* ignored eir_server_impl_id contents */)
fc931582
AA		 281#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
282#define decode_channel_attrs_maxsz (6 + \
283 1 /* ca_rdma_ird.len */ + \
284 1 /* ca_rdma_ird */)
285#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
286 2 /* csa_clientid */ + \
287 1 /* csa_sequence */ + \
288 1 /* csa_flags */ + \
289 encode_channel_attrs_maxsz + \
290 encode_channel_attrs_maxsz + \
291 1 /* csa_cb_program */ + \
292 1 /* csa_sec_parms.len (1) */ + \
293 1 /* cb_secflavor (AUTH_SYS) */ + \
294 1 /* stamp */ + \
295 1 /* machinename.len */ + \
296 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
297 1 /* uid */ + \
298 1 /* gid */ + \
299 1 /* gids.len (0) */)
300#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
301 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
302 1 /* csr_sequence */ + \
303 1 /* csr_flags */ + \
304 decode_channel_attrs_maxsz + \
305 decode_channel_attrs_maxsz)
0f3e66c6
AA		 306#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
307#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
fc01cea9
AA		 308#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
309 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
310#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
311 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
18019753
RL		 312#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
313#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
b1f69b75
AA		 314#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
315 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
316#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
317 1 /* layout type */ + \
318 1 /* opaque devaddr4 length */ + \
319 /* devaddr4 payload is read into page */ \
320 1 /* notification bitmap length */ + \
321 1 /* notification bitmap */)
322#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
323 encode_stateid_maxsz)
324#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
325 decode_stateid_maxsz + \
326 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
9b7b9fcc
AA		 327#else /* CONFIG_NFS_V4_1 */
328#define encode_sequence_maxsz 0
329#define decode_sequence_maxsz 0
330#endif /* CONFIG_NFS_V4_1 */
331
1da177e4
LT		 332#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
333#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
334#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 335 encode_sequence_maxsz + \
1da177e4 336 encode_putfh_maxsz + \
9104a55d 337 encode_read_maxsz)
1da177e4 338#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 339 decode_sequence_maxsz + \
1da177e4 340 decode_putfh_maxsz + \
9104a55d 341 decode_read_maxsz)
1da177e4 342#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 343 encode_sequence_maxsz + \
1da177e4 344 encode_putfh_maxsz + \
9104a55d 345 encode_readlink_maxsz)
1da177e4 346#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 347 decode_sequence_maxsz + \
1da177e4 348 decode_putfh_maxsz + \
9104a55d 349 decode_readlink_maxsz)
1da177e4 350#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 351 encode_sequence_maxsz + \
1da177e4 352 encode_putfh_maxsz + \
9104a55d 353 encode_readdir_maxsz)
1da177e4 354#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 355 decode_sequence_maxsz + \
1da177e4 356 decode_putfh_maxsz + \
9104a55d 357 decode_readdir_maxsz)
1da177e4 358#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 359 encode_sequence_maxsz + \
1da177e4 360 encode_putfh_maxsz + \
9104a55d 361 encode_write_maxsz + \
4f9838c7 362 encode_getattr_maxsz)
1da177e4 363#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 364 decode_sequence_maxsz + \
1da177e4 365 decode_putfh_maxsz + \
9104a55d 366 decode_write_maxsz + \
4f9838c7 367 decode_getattr_maxsz)
1da177e4 368#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 369 encode_sequence_maxsz + \
1da177e4 370 encode_putfh_maxsz + \
9104a55d 371 encode_commit_maxsz + \
4f9838c7 372 encode_getattr_maxsz)
1da177e4 373#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 374 decode_sequence_maxsz + \
1da177e4 375 decode_putfh_maxsz + \
9104a55d 376 decode_commit_maxsz + \
4f9838c7 377 decode_getattr_maxsz)
1da177e4 378#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 379 encode_sequence_maxsz + \
2cebf828
TM		 380 encode_putfh_maxsz + \
381 encode_savefh_maxsz + \
382 encode_open_maxsz + \
383 encode_getfh_maxsz + \
384 encode_getattr_maxsz + \
385 encode_restorefh_maxsz + \
386 encode_getattr_maxsz)
1da177e4 387#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 388 decode_sequence_maxsz + \
2cebf828
TM		 389 decode_putfh_maxsz + \
390 decode_savefh_maxsz + \
391 decode_open_maxsz + \
392 decode_getfh_maxsz + \
393 decode_getattr_maxsz + \
394 decode_restorefh_maxsz + \
395 decode_getattr_maxsz)
9104a55d
TM		 396#define NFS4_enc_open_confirm_sz \
397 (compound_encode_hdr_maxsz + \
398 encode_putfh_maxsz + \
399 encode_open_confirm_maxsz)
400#define NFS4_dec_open_confirm_sz \
401 (compound_decode_hdr_maxsz + \
402 decode_putfh_maxsz + \
403 decode_open_confirm_maxsz)
1da177e4 404#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 405 encode_sequence_maxsz + \
1da177e4 406 encode_putfh_maxsz + \
2cebf828
TM		 407 encode_open_maxsz + \
408 encode_getattr_maxsz)
1da177e4 409#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 410 decode_sequence_maxsz + \
1da177e4 411 decode_putfh_maxsz + \
2cebf828
TM		 412 decode_open_maxsz + \
413 decode_getattr_maxsz)
1da177e4
LT		 414#define NFS4_enc_open_downgrade_sz \
415 (compound_encode_hdr_maxsz + \
9b7b9fcc 416 encode_sequence_maxsz + \
9104a55d
TM		 417 encode_putfh_maxsz + \
418 encode_open_downgrade_maxsz + \
419 encode_getattr_maxsz)
1da177e4
LT		 420#define NFS4_dec_open_downgrade_sz \
421 (compound_decode_hdr_maxsz + \
9b7b9fcc 422 decode_sequence_maxsz + \
9104a55d
TM		 423 decode_putfh_maxsz + \
424 decode_open_downgrade_maxsz + \
425 decode_getattr_maxsz)
426#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 427 encode_sequence_maxsz + \
9104a55d
TM		 428 encode_putfh_maxsz + \
429 encode_close_maxsz + \
430 encode_getattr_maxsz)
431#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 432 decode_sequence_maxsz + \
9104a55d
TM		 433 decode_putfh_maxsz + \
434 decode_close_maxsz + \
435 decode_getattr_maxsz)
436#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 437 encode_sequence_maxsz + \
9104a55d
TM		 438 encode_putfh_maxsz + \
439 encode_setattr_maxsz + \
440 encode_getattr_maxsz)
441#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 442 decode_sequence_maxsz + \
9104a55d
TM		 443 decode_putfh_maxsz + \
444 decode_setattr_maxsz + \
445 decode_getattr_maxsz)
1da177e4 446#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 447 encode_sequence_maxsz + \
1da177e4
LT		 448 encode_putfh_maxsz + \
449 encode_fsinfo_maxsz)
450#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 451 decode_sequence_maxsz + \
1da177e4
LT		 452 decode_putfh_maxsz + \
453 decode_fsinfo_maxsz)
454#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
455 encode_renew_maxsz)
456#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
457 decode_renew_maxsz)
458#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
459 encode_setclientid_maxsz)
460#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
461 decode_setclientid_maxsz)
462#define NFS4_enc_setclientid_confirm_sz \
463 (compound_encode_hdr_maxsz + \
464 encode_setclientid_confirm_maxsz + \
465 encode_putrootfh_maxsz + \
466 encode_fsinfo_maxsz)
467#define NFS4_dec_setclientid_confirm_sz \
468 (compound_decode_hdr_maxsz + \
469 decode_setclientid_confirm_maxsz + \
470 decode_putrootfh_maxsz + \
471 decode_fsinfo_maxsz)
472#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 473 encode_sequence_maxsz + \
1da177e4 474 encode_putfh_maxsz + \
9104a55d 475 encode_lock_maxsz)
1da177e4 476#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 477 decode_sequence_maxsz + \
1da177e4 478 decode_putfh_maxsz + \
9104a55d 479 decode_lock_maxsz)
1da177e4 480#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 481 encode_sequence_maxsz + \
1da177e4 482 encode_putfh_maxsz + \
9104a55d
TM		 483 encode_lockt_maxsz)
484#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 485 decode_sequence_maxsz + \
9104a55d
TM		 486 decode_putfh_maxsz + \
487 decode_lockt_maxsz)
1da177e4 488#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 489 encode_sequence_maxsz + \
1da177e4 490 encode_putfh_maxsz + \
9104a55d 491 encode_locku_maxsz)
1da177e4 492#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 493 decode_sequence_maxsz + \
1da177e4 494 decode_putfh_maxsz + \
9104a55d 495 decode_locku_maxsz)
d3c7b7cc
TM		 496#define NFS4_enc_release_lockowner_sz \
497 (compound_encode_hdr_maxsz + \
498 encode_lockowner_maxsz)
499#define NFS4_dec_release_lockowner_sz \
500 (compound_decode_hdr_maxsz + \
501 decode_lockowner_maxsz)
1da177e4 502#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 503 encode_sequence_maxsz + \
1da177e4 504 encode_putfh_maxsz + \
76b32999
TM		 505 encode_access_maxsz + \
506 encode_getattr_maxsz)
1da177e4 507#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 508 decode_sequence_maxsz + \
1da177e4 509 decode_putfh_maxsz + \
76b32999
TM		 510 decode_access_maxsz + \
511 decode_getattr_maxsz)
1da177e4 512#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 513 encode_sequence_maxsz + \
1da177e4
LT		 514 encode_putfh_maxsz + \
515 encode_getattr_maxsz)
516#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 517 decode_sequence_maxsz + \
1da177e4
LT		 518 decode_putfh_maxsz + \
519 decode_getattr_maxsz)
520#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 521 encode_sequence_maxsz + \
1da177e4
LT		 522 encode_putfh_maxsz + \
523 encode_lookup_maxsz + \
524 encode_getattr_maxsz + \
525 encode_getfh_maxsz)
526#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 527 decode_sequence_maxsz + \
1da177e4 528 decode_putfh_maxsz + \
e6889620 529 decode_lookup_maxsz + \
1da177e4
LT		 530 decode_getattr_maxsz + \
531 decode_getfh_maxsz)
532#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 533 encode_sequence_maxsz + \
1da177e4
LT		 534 encode_putrootfh_maxsz + \
535 encode_getattr_maxsz + \
536 encode_getfh_maxsz)
537#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 538 decode_sequence_maxsz + \
1da177e4
LT		 539 decode_putrootfh_maxsz + \
540 decode_getattr_maxsz + \
541 decode_getfh_maxsz)
542#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 543 encode_sequence_maxsz + \
1da177e4 544 encode_putfh_maxsz + \
16e42959
TM		 545 encode_remove_maxsz + \
546 encode_getattr_maxsz)
1da177e4 547#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 548 decode_sequence_maxsz + \
1da177e4 549 decode_putfh_maxsz + \
6ce18391 550 decode_remove_maxsz + \
16e42959 551 decode_getattr_maxsz)
1da177e4 552#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 553 encode_sequence_maxsz + \
1da177e4
LT		 554 encode_putfh_maxsz + \
555 encode_savefh_maxsz + \
556 encode_putfh_maxsz + \
6caf2c82
TM		 557 encode_rename_maxsz + \
558 encode_getattr_maxsz + \
559 encode_restorefh_maxsz + \
560 encode_getattr_maxsz)
1da177e4 561#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 562 decode_sequence_maxsz + \
1da177e4
LT		 563 decode_putfh_maxsz + \
564 decode_savefh_maxsz + \
565 decode_putfh_maxsz + \
6caf2c82
TM		 566 decode_rename_maxsz + \
567 decode_getattr_maxsz + \
568 decode_restorefh_maxsz + \
569 decode_getattr_maxsz)
1da177e4 570#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 571 encode_sequence_maxsz + \
1da177e4
LT		 572 encode_putfh_maxsz + \
573 encode_savefh_maxsz + \
574 encode_putfh_maxsz + \
91ba2eee
TM		 575 encode_link_maxsz + \
576 decode_getattr_maxsz + \
577 encode_restorefh_maxsz + \
578 decode_getattr_maxsz)
1da177e4 579#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 580 decode_sequence_maxsz + \
1da177e4
LT		 581 decode_putfh_maxsz + \
582 decode_savefh_maxsz + \
583 decode_putfh_maxsz + \
91ba2eee
TM		 584 decode_link_maxsz + \
585 decode_getattr_maxsz + \
586 decode_restorefh_maxsz + \
587 decode_getattr_maxsz)
1da177e4 588#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 589 encode_sequence_maxsz + \
1da177e4
LT		 590 encode_putfh_maxsz + \
591 encode_symlink_maxsz + \
592 encode_getattr_maxsz + \
593 encode_getfh_maxsz)
594#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 595 decode_sequence_maxsz + \
1da177e4
LT		 596 decode_putfh_maxsz + \
597 decode_symlink_maxsz + \
598 decode_getattr_maxsz + \
599 decode_getfh_maxsz)
600#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 601 encode_sequence_maxsz + \
1da177e4 602 encode_putfh_maxsz + \
56ae19f3 603 encode_savefh_maxsz + \
1da177e4 604 encode_create_maxsz + \
56ae19f3 605 encode_getfh_maxsz + \
1da177e4 606 encode_getattr_maxsz + \
56ae19f3
TM		 607 encode_restorefh_maxsz + \
608 encode_getattr_maxsz)
1da177e4 609#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 610 decode_sequence_maxsz + \
1da177e4 611 decode_putfh_maxsz + \
56ae19f3 612 decode_savefh_maxsz + \
1da177e4 613 decode_create_maxsz + \
56ae19f3 614 decode_getfh_maxsz + \
1da177e4 615 decode_getattr_maxsz + \
56ae19f3
TM		 616 decode_restorefh_maxsz + \
617 decode_getattr_maxsz)
1da177e4 618#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 619 encode_sequence_maxsz + \
1da177e4
LT		 620 encode_putfh_maxsz + \
621 encode_getattr_maxsz)
622#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 623 decode_sequence_maxsz + \
1da177e4
LT		 624 decode_putfh_maxsz + \
625 decode_getattr_maxsz)
626#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 627 encode_sequence_maxsz + \
1da177e4 628 encode_putfh_maxsz + \
9104a55d 629 encode_statfs_maxsz)
1da177e4 630#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 631 decode_sequence_maxsz + \
1da177e4 632 decode_putfh_maxsz + \
9104a55d 633 decode_statfs_maxsz)
1da177e4 634#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 635 encode_sequence_maxsz + \
ab91f264 636 encode_putfh_maxsz + \
1da177e4
LT		 637 encode_getattr_maxsz)
638#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 639 decode_sequence_maxsz + \
ab91f264 640 decode_putfh_maxsz + \
1da177e4
LT		 641 decode_getattr_maxsz)
642#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 643 encode_sequence_maxsz + \
1da177e4 644 encode_putfh_maxsz + \
fa178f29
TM		 645 encode_delegreturn_maxsz + \
646 encode_getattr_maxsz)
1da177e4 647#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 648 decode_sequence_maxsz + \
fa178f29
TM		 649 decode_delegreturn_maxsz + \
650 decode_getattr_maxsz)
029d105e 651#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 652 encode_sequence_maxsz + \
029d105e 653 encode_putfh_maxsz + \
9104a55d 654 encode_getacl_maxsz)
029d105e 655#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 656 decode_sequence_maxsz + \
029d105e 657 decode_putfh_maxsz + \
9104a55d 658 decode_getacl_maxsz)
23ec6965 659#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
9b7b9fcc 660 encode_sequence_maxsz + \
23ec6965 661 encode_putfh_maxsz + \
9104a55d 662 encode_setacl_maxsz)
23ec6965 663#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
9b7b9fcc 664 decode_sequence_maxsz + \
23ec6965 665 decode_putfh_maxsz + \
9104a55d 666 decode_setacl_maxsz)
683b57b4
TM		 667#define NFS4_enc_fs_locations_sz \
668 (compound_encode_hdr_maxsz + \
9b7b9fcc 669 encode_sequence_maxsz + \
683b57b4 670 encode_putfh_maxsz + \
e6889620
TM		 671 encode_lookup_maxsz + \
672 encode_fs_locations_maxsz)
683b57b4
TM		 673#define NFS4_dec_fs_locations_sz \
674 (compound_decode_hdr_maxsz + \
9b7b9fcc 675 decode_sequence_maxsz + \
683b57b4 676 decode_putfh_maxsz + \
e6889620
TM		 677 decode_lookup_maxsz + \
678 decode_fs_locations_maxsz)
99fe60d0
BH		 679#if defined(CONFIG_NFS_V4_1)
680#define NFS4_enc_exchange_id_sz \
681 (compound_encode_hdr_maxsz + \
682 encode_exchange_id_maxsz)
683#define NFS4_dec_exchange_id_sz \
684 (compound_decode_hdr_maxsz + \
685 decode_exchange_id_maxsz)
fc931582
AA		 686#define NFS4_enc_create_session_sz \
687 (compound_encode_hdr_maxsz + \
688 encode_create_session_maxsz)
689#define NFS4_dec_create_session_sz \
690 (compound_decode_hdr_maxsz + \
691 decode_create_session_maxsz)
0f3e66c6
AA		 692#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
693 encode_destroy_session_maxsz)
694#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
695 decode_destroy_session_maxsz)
fc01cea9
AA		 696#define NFS4_enc_sequence_sz \
697 (compound_decode_hdr_maxsz + \
698 encode_sequence_maxsz)
699#define NFS4_dec_sequence_sz \
700 (compound_decode_hdr_maxsz + \
701 decode_sequence_maxsz)
2050f0cc
AA		 702#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
703 encode_sequence_maxsz + \
704 encode_putrootfh_maxsz + \
705 encode_fsinfo_maxsz)
706#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
707 decode_sequence_maxsz + \
708 decode_putrootfh_maxsz + \
709 decode_fsinfo_maxsz)
18019753
RL		 710#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
711 encode_sequence_maxsz + \
712 encode_reclaim_complete_maxsz)
713#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
714 decode_sequence_maxsz + \
715 decode_reclaim_complete_maxsz)
b1f69b75
AA		 716#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
717 encode_sequence_maxsz +\
718 encode_getdeviceinfo_maxsz)
719#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
720 decode_sequence_maxsz + \
721 decode_getdeviceinfo_maxsz)
722#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
723 encode_sequence_maxsz + \
724 encode_putfh_maxsz + \
725 encode_layoutget_maxsz)
726#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
727 decode_sequence_maxsz + \
728 decode_putfh_maxsz + \
729 decode_layoutget_maxsz)
2449ea2e
AB		 730
731const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
732 compound_encode_hdr_maxsz +
733 encode_sequence_maxsz +
734 encode_putfh_maxsz +
735 encode_getattr_maxsz) *
736 XDR_UNIT);
737
738const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
739 compound_decode_hdr_maxsz +
740 decode_sequence_maxsz +
741 decode_putfh_maxsz) *
742 XDR_UNIT);
99fe60d0 743#endif /* CONFIG_NFS_V4_1 */
1da177e4 744
bca79478
TM		 745static const umode_t nfs_type2fmt[] = {
746 [NF4BAD] = 0,
747 [NF4REG] = S_IFREG,
748 [NF4DIR] = S_IFDIR,
749 [NF4BLK] = S_IFBLK,
750 [NF4CHR] = S_IFCHR,
751 [NF4LNK] = S_IFLNK,
752 [NF4SOCK] = S_IFSOCK,
753 [NF4FIFO] = S_IFIFO,
754 [NF4ATTRDIR] = 0,
755 [NF4NAMEDATTR] = 0,
1da177e4
LT		 756};
757
758struct compound_hdr {
759 int32_t status;
760 uint32_t nops;
d017931c 761 __be32 * nops_p;
1da177e4
LT		 762 uint32_t taglen;
763 char * tag;
0c4e8c18 764 uint32_t replen; /* expected reply words */
66cc0429 765 u32 minorversion;
1da177e4
LT		 766};
767
13c65ce9
BH		 768static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
769{
770 __be32 *p = xdr_reserve_space(xdr, nbytes);
771 BUG_ON(!p);
772 return p;
773}
1da177e4
LT		 774
775static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
776{
8687b63a 777 __be32 *p;
1da177e4
LT		 778
779 p = xdr_reserve_space(xdr, 4 + len);
780 BUG_ON(p == NULL);
781 xdr_encode_opaque(p, str, len);
782}
783
0c4e8c18
BH		 784static void encode_compound_hdr(struct xdr_stream *xdr,
785 struct rpc_rqst *req,
786 struct compound_hdr *hdr)
1da177e4 787{
8687b63a 788 __be32 *p;
a17c2153 789 struct rpc_auth *auth = req->rq_cred->cr_auth;
0c4e8c18
BH		 790
791 /* initialize running count of expected bytes in reply.
792 * NOTE: the replied tag SHOULD be the same is the one sent,
793 * but this is not required as a MUST for the server to do so. */
794 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
1da177e4
LT		 795
796 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
797 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
811652bd
BH		 798 p = reserve_space(xdr, 4 + hdr->taglen + 8);
799 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
e75bc1c8 800 *p++ = cpu_to_be32(hdr->minorversion);
d017931c 801 hdr->nops_p = p;
34558513 802 *p = cpu_to_be32(hdr->nops);
d017931c
AA		 803}
804
805static void encode_nops(struct compound_hdr *hdr)
806{
fc931582 807 BUG_ON(hdr->nops > NFS4_MAX_OPS);
d017931c 808 *hdr->nops_p = htonl(hdr->nops);
1da177e4
LT		 809}
810
811static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
812{
8687b63a 813 __be32 *p;
1da177e4
LT		 814
815 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
816 BUG_ON(p == NULL);
817 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
818}
819
cf8cdbe5 820static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
1da177e4
LT		 821{
822 char owner_name[IDMAP_NAMESZ];
823 char owner_group[IDMAP_NAMESZ];
824 int owner_namelen = 0;
825 int owner_grouplen = 0;
8687b63a
AV		 826 __be32 *p;
827 __be32 *q;
1da177e4
LT		 828 int len;
829 uint32_t bmval0 = 0;
830 uint32_t bmval1 = 0;
1da177e4
LT		 831
832 /*
833 * We reserve enough space to write the entire attribute buffer at once.
834 * In the worst-case, this would be
835 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
836 * = 36 bytes, plus any contribution from variable-length fields
23ec6965 837 * such as owner/group.
1da177e4
LT		 838 */
839 len = 16;
840
841 /* Sigh */
842 if (iap->ia_valid & ATTR_SIZE)
843 len += 8;
844 if (iap->ia_valid & ATTR_MODE)
845 len += 4;
846 if (iap->ia_valid & ATTR_UID) {
955a857e 847 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1da177e4 848 if (owner_namelen < 0) {
fe82a183
CL		 849 dprintk("nfs: couldn't resolve uid %d to string\n",
850 iap->ia_uid);
1da177e4
LT		 851 /* XXX */
852 strcpy(owner_name, "nobody");
853 owner_namelen = sizeof("nobody") - 1;
854 /* goto out; */
855 }
856 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
857 }
858 if (iap->ia_valid & ATTR_GID) {
955a857e 859 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1da177e4 860 if (owner_grouplen < 0) {
fe82a183
CL		 861 dprintk("nfs: couldn't resolve gid %d to string\n",
862 iap->ia_gid);
1da177e4
LT		 863 strcpy(owner_group, "nobody");
864 owner_grouplen = sizeof("nobody") - 1;
865 /* goto out; */
866 }
867 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
868 }
869 if (iap->ia_valid & ATTR_ATIME_SET)
870 len += 16;
871 else if (iap->ia_valid & ATTR_ATIME)
872 len += 4;
873 if (iap->ia_valid & ATTR_MTIME_SET)
874 len += 16;
875 else if (iap->ia_valid & ATTR_MTIME)
876 len += 4;
13c65ce9 877 p = reserve_space(xdr, len);
1da177e4
LT		 878
879 /*
880 * We write the bitmap length now, but leave the bitmap and the attribute
881 * buffer length to be backfilled at the end of this routine.
882 */
e75bc1c8 883 *p++ = cpu_to_be32(2);
1da177e4
LT		 884 q = p;
885 p += 3;
886
887 if (iap->ia_valid & ATTR_SIZE) {
888 bmval0 |= FATTR4_WORD0_SIZE;
b95be5a9 889 p = xdr_encode_hyper(p, iap->ia_size);
1da177e4
LT		 890 }
891 if (iap->ia_valid & ATTR_MODE) {
892 bmval1 |= FATTR4_WORD1_MODE;
e75bc1c8 893 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1da177e4
LT		 894 }
895 if (iap->ia_valid & ATTR_UID) {
896 bmval1 |= FATTR4_WORD1_OWNER;
811652bd 897 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1da177e4
LT		 898 }
899 if (iap->ia_valid & ATTR_GID) {
900 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
811652bd 901 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1da177e4
LT		 902 }
903 if (iap->ia_valid & ATTR_ATIME_SET) {
904 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
e75bc1c8
BH		 905 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
906 *p++ = cpu_to_be32(0);
d3f6baaa
TM		 907 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
908 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1da177e4
LT		 909 }
910 else if (iap->ia_valid & ATTR_ATIME) {
911 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
e75bc1c8 912 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1da177e4
LT		 913 }
914 if (iap->ia_valid & ATTR_MTIME_SET) {
915 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
e75bc1c8
BH		 916 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
917 *p++ = cpu_to_be32(0);
918 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
919 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1da177e4
LT		 920 }
921 else if (iap->ia_valid & ATTR_MTIME) {
922 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
e75bc1c8 923 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1da177e4 924 }
6c0195a4 925
1da177e4
LT		 926 /*
927 * Now we backfill the bitmap and the attribute buffer length.
928 */
929 if (len != ((char *)p - (char *)q) + 4) {
fe82a183 930 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
1da177e4
LT		 931 len, ((char *)p - (char *)q) + 4);
932 BUG();
933 }
934 len = (char *)p - (char *)q - 12;
935 *q++ = htonl(bmval0);
936 *q++ = htonl(bmval1);
34558513 937 *q = htonl(len);
1da177e4 938
1da177e4 939/* out: */
1da177e4
LT		 940}
941
cf8cdbe5 942static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1da177e4 943{
8687b63a 944 __be32 *p;
1da177e4 945
13c65ce9 946 p = reserve_space(xdr, 8);
e75bc1c8 947 *p++ = cpu_to_be32(OP_ACCESS);
34558513 948 *p = cpu_to_be32(access);
d017931c 949 hdr->nops++;
dadf0c27 950 hdr->replen += decode_access_maxsz;
1da177e4
LT		 951}
952
cf8cdbe5 953static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1da177e4 954{
8687b63a 955 __be32 *p;
1da177e4 956
13c65ce9 957 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
e75bc1c8
BH		 958 *p++ = cpu_to_be32(OP_CLOSE);
959 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
34558513 960 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
d017931c 961 hdr->nops++;
dadf0c27 962 hdr->replen += decode_close_maxsz;
1da177e4
LT		 963}
964
cf8cdbe5 965static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1da177e4 966{
8687b63a 967 __be32 *p;
6c0195a4 968
13c65ce9 969 p = reserve_space(xdr, 16);
e75bc1c8 970 *p++ = cpu_to_be32(OP_COMMIT);
b95be5a9 971 p = xdr_encode_hyper(p, args->offset);
34558513 972 *p = cpu_to_be32(args->count);
d017931c 973 hdr->nops++;
dadf0c27 974 hdr->replen += decode_commit_maxsz;
1da177e4
LT		 975}
976
cf8cdbe5 977static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1da177e4 978{
8687b63a 979 __be32 *p;
6c0195a4 980
13c65ce9 981 p = reserve_space(xdr, 8);
e75bc1c8 982 *p++ = cpu_to_be32(OP_CREATE);
34558513 983 *p = cpu_to_be32(create->ftype);
1da177e4
LT		 984
985 switch (create->ftype) {
986 case NF4LNK:
13c65ce9 987 p = reserve_space(xdr, 4);
34558513 988 *p = cpu_to_be32(create->u.symlink.len);
94a6d753 989 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1da177e4
LT		 990 break;
991
992 case NF4BLK: case NF4CHR:
13c65ce9 993 p = reserve_space(xdr, 8);
e75bc1c8 994 *p++ = cpu_to_be32(create->u.device.specdata1);
34558513 995 *p = cpu_to_be32(create->u.device.specdata2);
1da177e4
LT		 996 break;
997
998 default:
999 break;
1000 }
1001
811652bd 1002 encode_string(xdr, create->name->len, create->name->name);
d017931c 1003 hdr->nops++;
dadf0c27 1004 hdr->replen += decode_create_maxsz;
1da177e4 1005
cf8cdbe5 1006 encode_attrs(xdr, create->attrs, create->server);
1da177e4
LT		 1007}
1008
cf8cdbe5 1009static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1da177e4 1010{
05d564fe 1011 __be32 *p;
1da177e4 1012
13c65ce9 1013 p = reserve_space(xdr, 12);
e75bc1c8
BH		 1014 *p++ = cpu_to_be32(OP_GETATTR);
1015 *p++ = cpu_to_be32(1);
34558513 1016 *p = cpu_to_be32(bitmap);
d017931c 1017 hdr->nops++;
dadf0c27 1018 hdr->replen += decode_getattr_maxsz;
1da177e4
LT		 1019}
1020
cf8cdbe5 1021static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1da177e4 1022{
05d564fe 1023 __be32 *p;
1da177e4 1024
13c65ce9 1025 p = reserve_space(xdr, 16);
e75bc1c8
BH		 1026 *p++ = cpu_to_be32(OP_GETATTR);
1027 *p++ = cpu_to_be32(2);
1028 *p++ = cpu_to_be32(bm0);
34558513 1029 *p = cpu_to_be32(bm1);
d017931c 1030 hdr->nops++;
dadf0c27 1031 hdr->replen += decode_getattr_maxsz;
1da177e4
LT		 1032}
1033
cf8cdbe5 1034static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1da177e4 1035{
cf8cdbe5
AA		 1036 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1037 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1da177e4
LT		 1038}
1039
cf8cdbe5 1040static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1da177e4 1041{
cf8cdbe5
AA		 1042 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1043 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1da177e4
LT		 1044}
1045
cf8cdbe5 1046static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
830b8e33 1047{
cf8cdbe5
AA		 1048 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1049 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
830b8e33
MN		 1050}
1051
cf8cdbe5 1052static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1da177e4 1053{
8687b63a 1054 __be32 *p;
1da177e4 1055
13c65ce9 1056 p = reserve_space(xdr, 4);
34558513 1057 *p = cpu_to_be32(OP_GETFH);
d017931c 1058 hdr->nops++;
dadf0c27 1059 hdr->replen += decode_getfh_maxsz;
1da177e4
LT		 1060}
1061
cf8cdbe5 1062static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1da177e4 1063{
8687b63a 1064 __be32 *p;
1da177e4 1065
13c65ce9 1066 p = reserve_space(xdr, 8 + name->len);
e75bc1c8 1067 *p++ = cpu_to_be32(OP_LINK);
811652bd 1068 xdr_encode_opaque(p, name->name, name->len);
d017931c 1069 hdr->nops++;
dadf0c27 1070 hdr->replen += decode_link_maxsz;
1da177e4
LT		 1071}
1072
911d1aaf
TM		 1073static inline int nfs4_lock_type(struct file_lock *fl, int block)
1074{
1075 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1076 return block ? NFS4_READW_LT : NFS4_READ_LT;
1077 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1078}
1079
1080static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1081{
1082 if (fl->fl_end == OFFSET_MAX)
1083 return ~(uint64_t)0;
1084 return fl->fl_end - fl->fl_start + 1;
1085}
1086
daccbded
TM		 1087static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1088{
1089 __be32 *p;
1090
d035c36c 1091 p = reserve_space(xdr, 32);
daccbded 1092 p = xdr_encode_hyper(p, lowner->clientid);
d035c36c 1093 *p++ = cpu_to_be32(20);
daccbded 1094 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
d035c36c 1095 *p++ = cpu_to_be32(lowner->s_dev);
daccbded
TM		 1096 xdr_encode_hyper(p, lowner->id);
1097}
1098
1da177e4
LT		 1099/*
1100 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1101 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1102 */
cf8cdbe5 1103static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1da177e4 1104{
8687b63a 1105 __be32 *p;
1da177e4 1106
13c65ce9 1107 p = reserve_space(xdr, 32);
e75bc1c8
BH		 1108 *p++ = cpu_to_be32(OP_LOCK);
1109 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1110 *p++ = cpu_to_be32(args->reclaim);
b95be5a9
BH		 1111 p = xdr_encode_hyper(p, args->fl->fl_start);
1112 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
34558513 1113 *p = cpu_to_be32(args->new_lock_owner);
911d1aaf 1114 if (args->new_lock_owner){
daccbded 1115 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
e75bc1c8 1116 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
93f0cf25 1117 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
e75bc1c8 1118 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
daccbded 1119 encode_lockowner(xdr, &args->lock_owner);
1da177e4
LT		 1120 }
1121 else {
13c65ce9 1122 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
93f0cf25 1123 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
34558513 1124 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1da177e4 1125 }
d017931c 1126 hdr->nops++;
dadf0c27 1127 hdr->replen += decode_lock_maxsz;
1da177e4
LT		 1128}
1129
cf8cdbe5 1130static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1da177e4 1131{
8687b63a 1132 __be32 *p;
1da177e4 1133
daccbded 1134 p = reserve_space(xdr, 24);
e75bc1c8
BH		 1135 *p++ = cpu_to_be32(OP_LOCKT);
1136 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
b95be5a9
BH		 1137 p = xdr_encode_hyper(p, args->fl->fl_start);
1138 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
daccbded 1139 encode_lockowner(xdr, &args->lock_owner);
d017931c 1140 hdr->nops++;
dadf0c27 1141 hdr->replen += decode_lockt_maxsz;
1da177e4
LT		 1142}
1143
cf8cdbe5 1144static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1da177e4 1145{
8687b63a 1146 __be32 *p;
1da177e4 1147
13c65ce9 1148 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
e75bc1c8
BH		 1149 *p++ = cpu_to_be32(OP_LOCKU);
1150 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1151 *p++ = cpu_to_be32(args->seqid->sequence->counter);
93f0cf25 1152 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
b95be5a9 1153 p = xdr_encode_hyper(p, args->fl->fl_start);
34558513 1154 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
d017931c 1155 hdr->nops++;
dadf0c27 1156 hdr->replen += decode_locku_maxsz;
1da177e4
LT		 1157}
1158
d3c7b7cc
TM		 1159static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1160{
1161 __be32 *p;
1162
1163 p = reserve_space(xdr, 4);
1164 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1165 encode_lockowner(xdr, lowner);
1166 hdr->nops++;
1167 hdr->replen += decode_release_lockowner_maxsz;
1168}
1169
cf8cdbe5 1170static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1da177e4
LT		 1171{
1172 int len = name->len;
8687b63a 1173 __be32 *p;
1da177e4 1174
13c65ce9 1175 p = reserve_space(xdr, 8 + len);
e75bc1c8 1176 *p++ = cpu_to_be32(OP_LOOKUP);
811652bd 1177 xdr_encode_opaque(p, name->name, len);
d017931c 1178 hdr->nops++;
dadf0c27 1179 hdr->replen += decode_lookup_maxsz;
1da177e4
LT		 1180}
1181
dc0b027d 1182static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1da177e4 1183{
8687b63a 1184 __be32 *p;
1da177e4 1185
13c65ce9 1186 p = reserve_space(xdr, 8);
dc0b027d 1187 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
05d564fe 1188 case FMODE_READ:
e75bc1c8 1189 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
05d564fe
AA		 1190 break;
1191 case FMODE_WRITE:
e75bc1c8 1192 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
05d564fe
AA		 1193 break;
1194 case FMODE_READ|FMODE_WRITE:
e75bc1c8 1195 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
05d564fe
AA		 1196 break;
1197 default:
e75bc1c8 1198 *p++ = cpu_to_be32(0);
1da177e4 1199 }
34558513 1200 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1da177e4
LT		 1201}
1202
1203static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1204{
8687b63a 1205 __be32 *p;
1da177e4
LT		 1206 /*
1207 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1208 * owner 4 = 32
1209 */
13c65ce9 1210 p = reserve_space(xdr, 8);
e75bc1c8 1211 *p++ = cpu_to_be32(OP_OPEN);
34558513 1212 *p = cpu_to_be32(arg->seqid->sequence->counter);
dc0b027d 1213 encode_share_access(xdr, arg->fmode);
d035c36c 1214 p = reserve_space(xdr, 32);
b95be5a9 1215 p = xdr_encode_hyper(p, arg->clientid);
d035c36c 1216 *p++ = cpu_to_be32(20);
93f0cf25 1217 p = xdr_encode_opaque_fixed(p, "open id:", 8);
d035c36c 1218 *p++ = cpu_to_be32(arg->server->s_dev);
34558513 1219 xdr_encode_hyper(p, arg->id);
1da177e4
LT		 1220}
1221
1222static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1223{
8687b63a 1224 __be32 *p;
4882ef72 1225 struct nfs_client *clp;
1da177e4 1226
13c65ce9 1227 p = reserve_space(xdr, 4);
1da177e4 1228 switch(arg->open_flags & O_EXCL) {
05d564fe 1229 case 0:
34558513 1230 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
05d564fe
AA		 1231 encode_attrs(xdr, arg->u.attrs, arg->server);
1232 break;
1233 default:
4882ef72 1234 clp = arg->server->nfs_client;
a4432345 1235 if (clp->cl_mvops->minor_version > 0) {
4882ef72
AB		 1236 if (nfs4_has_persistent_session(clp)) {
1237 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1238 encode_attrs(xdr, arg->u.attrs, arg->server);
1239 } else {
1240 struct iattr dummy;
1241
1242 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1243 encode_nfs4_verifier(xdr, &arg->u.verifier);
1244 dummy.ia_valid = 0;
1245 encode_attrs(xdr, &dummy, arg->server);
1246 }
1247 } else {
1248 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1249 encode_nfs4_verifier(xdr, &arg->u.verifier);
1250 }
1da177e4
LT		 1251 }
1252}
1253
1254static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1255{
8687b63a 1256 __be32 *p;
1da177e4 1257
13c65ce9 1258 p = reserve_space(xdr, 4);
1da177e4 1259 switch (arg->open_flags & O_CREAT) {
05d564fe 1260 case 0:
34558513 1261 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
05d564fe
AA		 1262 break;
1263 default:
1264 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
34558513 1265 *p = cpu_to_be32(NFS4_OPEN_CREATE);
05d564fe 1266 encode_createmode(xdr, arg);
1da177e4
LT		 1267 }
1268}
1269
bd7bf9d5 1270static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1da177e4 1271{
8687b63a 1272 __be32 *p;
1da177e4 1273
13c65ce9 1274 p = reserve_space(xdr, 4);
1da177e4 1275 switch (delegation_type) {
05d564fe 1276 case 0:
34558513 1277 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
05d564fe
AA		 1278 break;
1279 case FMODE_READ:
34558513 1280 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
05d564fe
AA		 1281 break;
1282 case FMODE_WRITE|FMODE_READ:
34558513 1283 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
05d564fe
AA		 1284 break;
1285 default:
1286 BUG();
1da177e4
LT		 1287 }
1288}
1289
1290static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1291{
8687b63a 1292 __be32 *p;
1da177e4 1293
13c65ce9 1294 p = reserve_space(xdr, 4);
34558513 1295 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1da177e4
LT		 1296 encode_string(xdr, name->len, name->name);
1297}
1298
bd7bf9d5 1299static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1da177e4 1300{
8687b63a 1301 __be32 *p;
1da177e4 1302
13c65ce9 1303 p = reserve_space(xdr, 4);
34558513 1304 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1da177e4
LT		 1305 encode_delegation_type(xdr, type);
1306}
1307
1308static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1309{
8687b63a 1310 __be32 *p;
1da177e4 1311
13c65ce9 1312 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
e75bc1c8 1313 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
34558513 1314 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 1315 encode_string(xdr, name->len, name->name);
1316}
1317
cf8cdbe5 1318static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1da177e4
LT		 1319{
1320 encode_openhdr(xdr, arg);
1321 encode_opentype(xdr, arg);
1322 switch (arg->claim) {
05d564fe
AA		 1323 case NFS4_OPEN_CLAIM_NULL:
1324 encode_claim_null(xdr, arg->name);
1325 break;
1326 case NFS4_OPEN_CLAIM_PREVIOUS:
1327 encode_claim_previous(xdr, arg->u.delegation_type);
1328 break;
1329 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1330 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1331 break;
1332 default:
1333 BUG();
1da177e4 1334 }
d017931c 1335 hdr->nops++;
dadf0c27 1336 hdr->replen += decode_open_maxsz;
1da177e4
LT		 1337}
1338
cf8cdbe5 1339static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1da177e4 1340{
8687b63a 1341 __be32 *p;
1da177e4 1342
13c65ce9 1343 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
e75bc1c8 1344 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
93f0cf25 1345 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
34558513 1346 *p = cpu_to_be32(arg->seqid->sequence->counter);
d017931c 1347 hdr->nops++;
dadf0c27 1348 hdr->replen += decode_open_confirm_maxsz;
1da177e4
LT		 1349}
1350
cf8cdbe5 1351static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1da177e4 1352{
8687b63a 1353 __be32 *p;
1da177e4 1354
13c65ce9 1355 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
e75bc1c8 1356 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
93f0cf25 1357 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
34558513 1358 *p = cpu_to_be32(arg->seqid->sequence->counter);
dc0b027d 1359 encode_share_access(xdr, arg->fmode);
d017931c 1360 hdr->nops++;
dadf0c27 1361 hdr->replen += decode_open_downgrade_maxsz;
1da177e4
LT		 1362}
1363
cf8cdbe5 1364static void
d017931c 1365encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1da177e4
LT		 1366{
1367 int len = fh->size;
8687b63a 1368 __be32 *p;
1da177e4 1369
13c65ce9 1370 p = reserve_space(xdr, 8 + len);
e75bc1c8 1371 *p++ = cpu_to_be32(OP_PUTFH);
811652bd 1372 xdr_encode_opaque(p, fh->data, len);
d017931c 1373 hdr->nops++;
dadf0c27 1374 hdr->replen += decode_putfh_maxsz;
1da177e4
LT		 1375}
1376
cf8cdbe5 1377static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1da177e4 1378{
05d564fe 1379 __be32 *p;
6c0195a4 1380
13c65ce9 1381 p = reserve_space(xdr, 4);
34558513 1382 *p = cpu_to_be32(OP_PUTROOTFH);
d017931c 1383 hdr->nops++;
dadf0c27 1384 hdr->replen += decode_putrootfh_maxsz;
1da177e4
LT		 1385}
1386
89d1ea65 1387static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
1da177e4 1388{
1da177e4 1389 nfs4_stateid stateid;
8687b63a 1390 __be32 *p;
1da177e4 1391
13c65ce9 1392 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1da177e4 1393 if (ctx->state != NULL) {
77041ed9 1394 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
89d1ea65
AA		 1395 if (zero_seqid)
1396 stateid.stateid.seqid = 0;
34558513 1397 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1da177e4 1398 } else
34558513 1399 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 1400}
1401
cf8cdbe5 1402static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1da177e4 1403{
8687b63a 1404 __be32 *p;
1da177e4 1405
13c65ce9 1406 p = reserve_space(xdr, 4);
34558513 1407 *p = cpu_to_be32(OP_READ);
1da177e4 1408
89d1ea65
AA		 1409 encode_stateid(xdr, args->context, args->lock_context,
1410 hdr->minorversion);
1da177e4 1411
13c65ce9 1412 p = reserve_space(xdr, 12);
b95be5a9 1413 p = xdr_encode_hyper(p, args->offset);
34558513 1414 *p = cpu_to_be32(args->count);
d017931c 1415 hdr->nops++;
dadf0c27 1416 hdr->replen += decode_read_maxsz;
1da177e4
LT		 1417}
1418
cf8cdbe5 1419static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1da177e4 1420{
82f2e547 1421 uint32_t attrs[2] = {0, 0};
6f7a35bd 1422 uint32_t dircount = readdir->count >> 1;
8687b63a 1423 __be32 *p;
1da177e4 1424
82f2e547
BS		 1425 if (readdir->plus) {
1426 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1427 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE;
1428 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1429 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1430 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1431 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
6f7a35bd 1432 dircount >>= 1;
82f2e547
BS		 1433 }
1434 attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID;
1435 attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
6f7a35bd
TM		 1436 /* Switch to mounted_on_fileid if the server supports it */
1437 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1438 attrs[0] &= ~FATTR4_WORD0_FILEID;
1439 else
1440 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
82f2e547 1441
13c65ce9 1442 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
e75bc1c8 1443 *p++ = cpu_to_be32(OP_READDIR);
b95be5a9 1444 p = xdr_encode_hyper(p, readdir->cookie);
93f0cf25 1445 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
6f7a35bd 1446 *p++ = cpu_to_be32(dircount);
e75bc1c8
BH		 1447 *p++ = cpu_to_be32(readdir->count);
1448 *p++ = cpu_to_be32(2);
82f2e547 1449
e75bc1c8 1450 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
34558513 1451 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
d017931c 1452 hdr->nops++;
dadf0c27 1453 hdr->replen += decode_readdir_maxsz;
44109241
FI		 1454 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1455 __func__,
eadf4598
TM		 1456 (unsigned long long)readdir->cookie,
1457 ((u32 *)readdir->verifier.data)[0],
1458 ((u32 *)readdir->verifier.data)[1],
1459 attrs[0] & readdir->bitmask[0],
1460 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1461}
1462
cf8cdbe5 1463static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1da177e4 1464{
8687b63a 1465 __be32 *p;
1da177e4 1466
13c65ce9 1467 p = reserve_space(xdr, 4);
34558513 1468 *p = cpu_to_be32(OP_READLINK);
d017931c 1469 hdr->nops++;
dadf0c27 1470 hdr->replen += decode_readlink_maxsz;
1da177e4
LT		 1471}
1472
cf8cdbe5 1473static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1da177e4 1474{
8687b63a 1475 __be32 *p;
1da177e4 1476
13c65ce9 1477 p = reserve_space(xdr, 8 + name->len);
e75bc1c8 1478 *p++ = cpu_to_be32(OP_REMOVE);
811652bd 1479 xdr_encode_opaque(p, name->name, name->len);
d017931c 1480 hdr->nops++;
dadf0c27 1481 hdr->replen += decode_remove_maxsz;
1da177e4
LT		 1482}
1483
cf8cdbe5 1484static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1da177e4 1485{
8687b63a 1486 __be32 *p;
1da177e4 1487
811652bd
BH		 1488 p = reserve_space(xdr, 4);
1489 *p = cpu_to_be32(OP_RENAME);
1490 encode_string(xdr, oldname->len, oldname->name);
1491 encode_string(xdr, newname->len, newname->name);
d017931c 1492 hdr->nops++;
dadf0c27 1493 hdr->replen += decode_rename_maxsz;
1da177e4
LT		 1494}
1495
cf8cdbe5 1496static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1da177e4 1497{
8687b63a 1498 __be32 *p;
1da177e4 1499
13c65ce9 1500 p = reserve_space(xdr, 12);
e75bc1c8 1501 *p++ = cpu_to_be32(OP_RENEW);
34558513 1502 xdr_encode_hyper(p, client_stateid->cl_clientid);
d017931c 1503 hdr->nops++;
dadf0c27 1504 hdr->replen += decode_renew_maxsz;
1da177e4
LT		 1505}
1506
cf8cdbe5 1507static void
d017931c 1508encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
56ae19f3 1509{
8687b63a 1510 __be32 *p;
56ae19f3 1511
13c65ce9 1512 p = reserve_space(xdr, 4);
34558513 1513 *p = cpu_to_be32(OP_RESTOREFH);
d017931c 1514 hdr->nops++;
dadf0c27 1515 hdr->replen += decode_restorefh_maxsz;
56ae19f3
TM		 1516}
1517
9f06c719 1518static void
d017931c 1519encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
23ec6965 1520{
8687b63a 1521 __be32 *p;
23ec6965 1522
13c65ce9 1523 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
e75bc1c8 1524 *p++ = cpu_to_be32(OP_SETATTR);
34558513 1525 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
13c65ce9 1526 p = reserve_space(xdr, 2*4);
e75bc1c8 1527 *p++ = cpu_to_be32(1);
34558513 1528 *p = cpu_to_be32(FATTR4_WORD0_ACL);
9f06c719 1529 BUG_ON(arg->acl_len % 4);
13c65ce9 1530 p = reserve_space(xdr, 4);
34558513 1531 *p = cpu_to_be32(arg->acl_len);
23ec6965 1532 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
d017931c 1533 hdr->nops++;
dadf0c27 1534 hdr->replen += decode_setacl_maxsz;
23ec6965
BF		 1535}
1536
cf8cdbe5 1537static void
d017931c 1538encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1da177e4 1539{
8687b63a 1540 __be32 *p;
1da177e4 1541
13c65ce9 1542 p = reserve_space(xdr, 4);
34558513 1543 *p = cpu_to_be32(OP_SAVEFH);
d017931c 1544 hdr->nops++;
dadf0c27 1545 hdr->replen += decode_savefh_maxsz;
1da177e4
LT		 1546}
1547
cf8cdbe5 1548static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1da177e4 1549{
8687b63a 1550 __be32 *p;
6c0195a4 1551
13c65ce9 1552 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
e75bc1c8 1553 *p++ = cpu_to_be32(OP_SETATTR);
34558513 1554 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
d017931c 1555 hdr->nops++;
dadf0c27 1556 hdr->replen += decode_setattr_maxsz;
cf8cdbe5 1557 encode_attrs(xdr, arg->iap, server);
1da177e4
LT		 1558}
1559
cf8cdbe5 1560static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1da177e4 1561{
8687b63a 1562 __be32 *p;
1da177e4 1563
13c65ce9 1564 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
e75bc1c8 1565 *p++ = cpu_to_be32(OP_SETCLIENTID);
34558513 1566 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1567
1568 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
13c65ce9 1569 p = reserve_space(xdr, 4);
34558513 1570 *p = cpu_to_be32(setclientid->sc_prog);
1da177e4
LT		 1571 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1572 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
13c65ce9 1573 p = reserve_space(xdr, 4);
34558513 1574 *p = cpu_to_be32(setclientid->sc_cb_ident);
d017931c 1575 hdr->nops++;
dadf0c27 1576 hdr->replen += decode_setclientid_maxsz;
1da177e4
LT		 1577}
1578
bb8b27e5 1579static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1da177e4 1580{
05d564fe 1581 __be32 *p;
1da177e4 1582
13c65ce9 1583 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
e75bc1c8 1584 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
bb8b27e5
TM		 1585 p = xdr_encode_hyper(p, arg->clientid);
1586 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
d017931c 1587 hdr->nops++;
dadf0c27 1588 hdr->replen += decode_setclientid_confirm_maxsz;
1da177e4
LT		 1589}
1590
cf8cdbe5 1591static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1da177e4 1592{
8687b63a 1593 __be32 *p;
1da177e4 1594
13c65ce9 1595 p = reserve_space(xdr, 4);
34558513 1596 *p = cpu_to_be32(OP_WRITE);
1da177e4 1597
89d1ea65
AA		 1598 encode_stateid(xdr, args->context, args->lock_context,
1599 hdr->minorversion);
1da177e4 1600
13c65ce9 1601 p = reserve_space(xdr, 16);
b95be5a9 1602 p = xdr_encode_hyper(p, args->offset);
e75bc1c8 1603 *p++ = cpu_to_be32(args->stable);
34558513 1604 *p = cpu_to_be32(args->count);
1da177e4
LT		 1605
1606 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
d017931c 1607 hdr->nops++;
dadf0c27 1608 hdr->replen += decode_write_maxsz;
1da177e4
LT		 1609}
1610
cf8cdbe5 1611static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1da177e4 1612{
8687b63a 1613 __be32 *p;
1da177e4 1614
13c65ce9 1615 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1da177e4 1616
e75bc1c8 1617 *p++ = cpu_to_be32(OP_DELEGRETURN);
34558513 1618 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
d017931c 1619 hdr->nops++;
dadf0c27 1620 hdr->replen += decode_delegreturn_maxsz;
1da177e4 1621}
9b7b9fcc 1622
99fe60d0 1623#if defined(CONFIG_NFS_V4_1)
9b7b9fcc 1624/* NFSv4.1 operations */
99fe60d0
BH		 1625static void encode_exchange_id(struct xdr_stream *xdr,
1626 struct nfs41_exchange_id_args *args,
1627 struct compound_hdr *hdr)
1628{
1629 __be32 *p;
1630
13c65ce9 1631 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
e75bc1c8 1632 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
34558513 1633 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
99fe60d0
BH		 1634
1635 encode_string(xdr, args->id_len, args->id);
1636
13c65ce9 1637 p = reserve_space(xdr, 12);
e75bc1c8
BH		 1638 *p++ = cpu_to_be32(args->flags);
1639 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
34558513 1640 *p = cpu_to_be32(0); /* zero length implementation id array */
99fe60d0
BH		 1641 hdr->nops++;
1642 hdr->replen += decode_exchange_id_maxsz;
1643}
fc931582
AA		 1644
1645static void encode_create_session(struct xdr_stream *xdr,
1646 struct nfs41_create_session_args *args,
1647 struct compound_hdr *hdr)
1648{
1649 __be32 *p;
1650 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1651 uint32_t len;
1652 struct nfs_client *clp = args->client;
8e0d46e1
MS		 1653 u32 max_resp_sz_cached;
1654
1655 /*
1656 * Assumes OPEN is the biggest non-idempotent compound.
1657 * 2 is the verifier.
1658 */
1659 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1660 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
fc931582 1661
42edd698
BH		 1662 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1663 clp->cl_ipaddr);
fc931582 1664
13c65ce9 1665 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
42edd698 1666 *p++ = cpu_to_be32(OP_CREATE_SESSION);
114f64b5 1667 p = xdr_encode_hyper(p, clp->cl_clientid);
e75bc1c8
BH		 1668 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1669 *p++ = cpu_to_be32(args->flags); /*flags */
fc931582 1670
fc931582 1671 /* Fore Channel */
e75bc1c8
BH		 1672 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1673 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1674 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
8e0d46e1 1675 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
e75bc1c8
BH		 1676 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1677 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1678 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
fc931582
AA		 1679
1680 /* Back Channel */
e75bc1c8
BH		 1681 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1682 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1683 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1684 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1685 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1686 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1687 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
fc931582 1688
e75bc1c8 1689 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
e75bc1c8 1690 *p++ = cpu_to_be32(1);
e75bc1c8 1691 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
fc931582
AA		 1692
1693 /* authsys_parms rfc1831 */
e75bc1c8 1694 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
811652bd 1695 p = xdr_encode_opaque(p, machine_name, len);
e75bc1c8
BH		 1696 *p++ = cpu_to_be32(0); /* UID */
1697 *p++ = cpu_to_be32(0); /* GID */
34558513 1698 *p = cpu_to_be32(0); /* No more gids */
fc931582
AA		 1699 hdr->nops++;
1700 hdr->replen += decode_create_session_maxsz;
1701}
0f3e66c6
AA		 1702
1703static void encode_destroy_session(struct xdr_stream *xdr,
1704 struct nfs4_session *session,
1705 struct compound_hdr *hdr)
1706{
1707 __be32 *p;
13c65ce9 1708 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
e75bc1c8 1709 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
34558513 1710 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
0f3e66c6
AA		 1711 hdr->nops++;
1712 hdr->replen += decode_destroy_session_maxsz;
1713}
18019753
RL		 1714
1715static void encode_reclaim_complete(struct xdr_stream *xdr,
1716 struct nfs41_reclaim_complete_args *args,
1717 struct compound_hdr *hdr)
1718{
1719 __be32 *p;
1720
1721 p = reserve_space(xdr, 8);
1722 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1723 *p++ = cpu_to_be32(args->one_fs);
1724 hdr->nops++;
1725 hdr->replen += decode_reclaim_complete_maxsz;
1726}
99fe60d0
BH		 1727#endif /* CONFIG_NFS_V4_1 */
1728
9b7b9fcc
AA		 1729static void encode_sequence(struct xdr_stream *xdr,
1730 const struct nfs4_sequence_args *args,
1731 struct compound_hdr *hdr)
1732{
1733#if defined(CONFIG_NFS_V4_1)
1734 struct nfs4_session *session = args->sa_session;
fc01cea9
AA		 1735 struct nfs4_slot_table *tp;
1736 struct nfs4_slot *slot;
1737 __be32 *p;
9b7b9fcc
AA		 1738
1739 if (!session)
1740 return;
1741
fc01cea9
AA		 1742 tp = &session->fc_slot_table;
1743
1744 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1745 slot = tp->slots + args->sa_slotid;
1746
13c65ce9 1747 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
e75bc1c8 1748 *p++ = cpu_to_be32(OP_SEQUENCE);
fc01cea9
AA		 1749
1750 /*
1751 * Sessionid + seqid + slotid + max slotid + cache_this
1752 */
1753 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1754 "max_slotid=%d cache_this=%d\n",
1755 __func__,
1756 ((u32 *)session->sess_id.data)[0],
1757 ((u32 *)session->sess_id.data)[1],
1758 ((u32 *)session->sess_id.data)[2],
1759 ((u32 *)session->sess_id.data)[3],
1760 slot->seq_nr, args->sa_slotid,
1761 tp->highest_used_slotid, args->sa_cache_this);
93f0cf25 1762 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
e75bc1c8
BH		 1763 *p++ = cpu_to_be32(slot->seq_nr);
1764 *p++ = cpu_to_be32(args->sa_slotid);
1765 *p++ = cpu_to_be32(tp->highest_used_slotid);
34558513 1766 *p = cpu_to_be32(args->sa_cache_this);
9b7b9fcc
AA		 1767 hdr->nops++;
1768 hdr->replen += decode_sequence_maxsz;
1769#endif /* CONFIG_NFS_V4_1 */
1770}
1771
b1f69b75
AA		 1772#ifdef CONFIG_NFS_V4_1
1773static void
1774encode_getdeviceinfo(struct xdr_stream *xdr,
1775 const struct nfs4_getdeviceinfo_args *args,
1776 struct compound_hdr *hdr)
1777{
1778 __be32 *p;
1779
1780 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1781 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1782 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1783 NFS4_DEVICEID4_SIZE);
1784 *p++ = cpu_to_be32(args->pdev->layout_type);
1785 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1786 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1787 hdr->nops++;
1788 hdr->replen += decode_getdeviceinfo_maxsz;
1789}
1790
1791static void
1792encode_layoutget(struct xdr_stream *xdr,
1793 const struct nfs4_layoutget_args *args,
1794 struct compound_hdr *hdr)
1795{
b1f69b75
AA		 1796 __be32 *p;
1797
1798 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1799 *p++ = cpu_to_be32(OP_LAYOUTGET);
1800 *p++ = cpu_to_be32(0); /* Signal layout available */
1801 *p++ = cpu_to_be32(args->type);
1802 *p++ = cpu_to_be32(args->range.iomode);
1803 p = xdr_encode_hyper(p, args->range.offset);
1804 p = xdr_encode_hyper(p, args->range.length);
1805 p = xdr_encode_hyper(p, args->minlength);
cf7d63f1 1806 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
b1f69b75
AA		 1807 *p = cpu_to_be32(args->maxcount);
1808
1809 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1810 __func__,
1811 args->type,
1812 args->range.iomode,
1813 (unsigned long)args->range.offset,
1814 (unsigned long)args->range.length,
1815 args->maxcount);
1816 hdr->nops++;
1817 hdr->replen += decode_layoutget_maxsz;
1818}
1819#endif /* CONFIG_NFS_V4_1 */
1820
1da177e4
LT		 1821/*
1822 * END OF "GENERIC" ENCODE ROUTINES.
1823 */
1824
66cc0429
BH		 1825static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1826{
1827#if defined(CONFIG_NFS_V4_1)
1828 if (args->sa_session)
a4432345 1829 return args->sa_session->clp->cl_mvops->minor_version;
66cc0429
BH		 1830#endif /* CONFIG_NFS_V4_1 */
1831 return 0;
1832}
1833
1da177e4
LT		 1834/*
1835 * Encode an ACCESS request
1836 */
9f06c719
CL		 1837static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
1838 const struct nfs4_accessargs *args)
1da177e4 1839{
1da177e4 1840 struct compound_hdr hdr = {
66cc0429 1841 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1842 };
1da177e4 1843
9f06c719
CL		 1844 encode_compound_hdr(xdr, req, &hdr);
1845 encode_sequence(xdr, &args->seq_args, &hdr);
1846 encode_putfh(xdr, args->fh, &hdr);
1847 encode_access(xdr, args->access, &hdr);
1848 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1849 encode_nops(&hdr);
1da177e4
LT		 1850}
1851
1852/*
1853 * Encode LOOKUP request
1854 */
9f06c719
CL		 1855static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
1856 const struct nfs4_lookup_arg *args)
1da177e4 1857{
1da177e4 1858 struct compound_hdr hdr = {
66cc0429 1859 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1860 };
1da177e4 1861
9f06c719
CL		 1862 encode_compound_hdr(xdr, req, &hdr);
1863 encode_sequence(xdr, &args->seq_args, &hdr);
1864 encode_putfh(xdr, args->dir_fh, &hdr);
1865 encode_lookup(xdr, args->name, &hdr);
1866 encode_getfh(xdr, &hdr);
1867 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1868 encode_nops(&hdr);
1da177e4
LT		 1869}
1870
1871/*
1872 * Encode LOOKUP_ROOT request
1873 */
9f06c719
CL		 1874static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
1875 struct xdr_stream *xdr,
1876 const struct nfs4_lookup_root_arg *args)
1da177e4 1877{
1da177e4 1878 struct compound_hdr hdr = {
66cc0429 1879 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1880 };
1da177e4 1881
9f06c719
CL		 1882 encode_compound_hdr(xdr, req, &hdr);
1883 encode_sequence(xdr, &args->seq_args, &hdr);
1884 encode_putrootfh(xdr, &hdr);
1885 encode_getfh(xdr, &hdr);
1886 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1887 encode_nops(&hdr);
1da177e4
LT		 1888}
1889
1890/*
1891 * Encode REMOVE request
1892 */
9f06c719
CL		 1893static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
1894 const struct nfs_removeargs *args)
1da177e4 1895{
1da177e4 1896 struct compound_hdr hdr = {
66cc0429 1897 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1898 };
1da177e4 1899
9f06c719
CL		 1900 encode_compound_hdr(xdr, req, &hdr);
1901 encode_sequence(xdr, &args->seq_args, &hdr);
1902 encode_putfh(xdr, args->fh, &hdr);
1903 encode_remove(xdr, &args->name, &hdr);
1904 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1905 encode_nops(&hdr);
1da177e4
LT		 1906}
1907
1908/*
1909 * Encode RENAME request
1910 */
9f06c719
CL		 1911static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
1912 const struct nfs_renameargs *args)
1da177e4 1913{
1da177e4 1914 struct compound_hdr hdr = {
66cc0429 1915 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1916 };
1da177e4 1917
9f06c719
CL		 1918 encode_compound_hdr(xdr, req, &hdr);
1919 encode_sequence(xdr, &args->seq_args, &hdr);
1920 encode_putfh(xdr, args->old_dir, &hdr);
1921 encode_savefh(xdr, &hdr);
1922 encode_putfh(xdr, args->new_dir, &hdr);
1923 encode_rename(xdr, args->old_name, args->new_name, &hdr);
1924 encode_getfattr(xdr, args->bitmask, &hdr);
1925 encode_restorefh(xdr, &hdr);
1926 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1927 encode_nops(&hdr);
1da177e4
LT		 1928}
1929
1930/*
1931 * Encode LINK request
1932 */
9f06c719
CL		 1933static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
1934 const struct nfs4_link_arg *args)
1da177e4 1935{
1da177e4 1936 struct compound_hdr hdr = {
66cc0429 1937 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1938 };
1da177e4 1939
9f06c719
CL		 1940 encode_compound_hdr(xdr, req, &hdr);
1941 encode_sequence(xdr, &args->seq_args, &hdr);
1942 encode_putfh(xdr, args->fh, &hdr);
1943 encode_savefh(xdr, &hdr);
1944 encode_putfh(xdr, args->dir_fh, &hdr);
1945 encode_link(xdr, args->name, &hdr);
1946 encode_getfattr(xdr, args->bitmask, &hdr);
1947 encode_restorefh(xdr, &hdr);
1948 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1949 encode_nops(&hdr);
1da177e4
LT		 1950}
1951
1952/*
1953 * Encode CREATE request
1954 */
9f06c719
CL		 1955static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
1956 const struct nfs4_create_arg *args)
1da177e4 1957{
1da177e4 1958 struct compound_hdr hdr = {
66cc0429 1959 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1960 };
1da177e4 1961
9f06c719
CL		 1962 encode_compound_hdr(xdr, req, &hdr);
1963 encode_sequence(xdr, &args->seq_args, &hdr);
1964 encode_putfh(xdr, args->dir_fh, &hdr);
1965 encode_savefh(xdr, &hdr);
1966 encode_create(xdr, args, &hdr);
1967 encode_getfh(xdr, &hdr);
1968 encode_getfattr(xdr, args->bitmask, &hdr);
1969 encode_restorefh(xdr, &hdr);
1970 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1971 encode_nops(&hdr);
1da177e4
LT		 1972}
1973
1974/*
1975 * Encode SYMLINK request
1976 */
9f06c719
CL		 1977static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
1978 const struct nfs4_create_arg *args)
1da177e4 1979{
9f06c719 1980 nfs4_xdr_enc_create(req, xdr, args);
1da177e4
LT		 1981}
1982
1983/*
1984 * Encode GETATTR request
1985 */
9f06c719
CL		 1986static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
1987 const struct nfs4_getattr_arg *args)
1da177e4 1988{
1da177e4 1989 struct compound_hdr hdr = {
66cc0429 1990 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 1991 };
1da177e4 1992
9f06c719
CL		 1993 encode_compound_hdr(xdr, req, &hdr);
1994 encode_sequence(xdr, &args->seq_args, &hdr);
1995 encode_putfh(xdr, args->fh, &hdr);
1996 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 1997 encode_nops(&hdr);
1da177e4
LT		 1998}
1999
2000/*
2001 * Encode a CLOSE request
2002 */
9f06c719
CL		 2003static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2004 struct nfs_closeargs *args)
1da177e4 2005{
05d564fe 2006 struct compound_hdr hdr = {
66cc0429 2007 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
05d564fe 2008 };
05d564fe 2009
9f06c719
CL		 2010 encode_compound_hdr(xdr, req, &hdr);
2011 encode_sequence(xdr, &args->seq_args, &hdr);
2012 encode_putfh(xdr, args->fh, &hdr);
2013 encode_close(xdr, args, &hdr);
2014 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2015 encode_nops(&hdr);
1da177e4
LT		 2016}
2017
2018/*
2019 * Encode an OPEN request
2020 */
9f06c719
CL		 2021static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2022 struct nfs_openargs *args)
1da177e4 2023{
1da177e4 2024 struct compound_hdr hdr = {
66cc0429 2025 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2026 };
1da177e4 2027
9f06c719
CL		 2028 encode_compound_hdr(xdr, req, &hdr);
2029 encode_sequence(xdr, &args->seq_args, &hdr);
2030 encode_putfh(xdr, args->fh, &hdr);
2031 encode_savefh(xdr, &hdr);
2032 encode_open(xdr, args, &hdr);
2033 encode_getfh(xdr, &hdr);
2034 encode_getfattr(xdr, args->bitmask, &hdr);
2035 encode_restorefh(xdr, &hdr);
2036 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2037 encode_nops(&hdr);
1da177e4
LT		 2038}
2039
2040/*
2041 * Encode an OPEN_CONFIRM request
2042 */
9f06c719
CL		 2043static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2044 struct xdr_stream *xdr,
2045 struct nfs_open_confirmargs *args)
1da177e4 2046{
1da177e4 2047 struct compound_hdr hdr = {
d017931c 2048 .nops = 0,
1da177e4 2049 };
1da177e4 2050
9f06c719
CL		 2051 encode_compound_hdr(xdr, req, &hdr);
2052 encode_putfh(xdr, args->fh, &hdr);
2053 encode_open_confirm(xdr, args, &hdr);
d017931c 2054 encode_nops(&hdr);
1da177e4
LT		 2055}
2056
2057/*
2058 * Encode an OPEN request with no attributes.
2059 */
9f06c719
CL		 2060static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2061 struct xdr_stream *xdr,
2062 struct nfs_openargs *args)
1da177e4 2063{
1da177e4 2064 struct compound_hdr hdr = {
66cc0429 2065 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2066 };
1da177e4 2067
9f06c719
CL		 2068 encode_compound_hdr(xdr, req, &hdr);
2069 encode_sequence(xdr, &args->seq_args, &hdr);
2070 encode_putfh(xdr, args->fh, &hdr);
2071 encode_open(xdr, args, &hdr);
2072 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2073 encode_nops(&hdr);
1da177e4
LT		 2074}
2075
2076/*
2077 * Encode an OPEN_DOWNGRADE request
2078 */
9f06c719
CL		 2079static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2080 struct xdr_stream *xdr,
2081 struct nfs_closeargs *args)
1da177e4 2082{
1da177e4 2083 struct compound_hdr hdr = {
66cc0429 2084 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2085 };
1da177e4 2086
9f06c719
CL		 2087 encode_compound_hdr(xdr, req, &hdr);
2088 encode_sequence(xdr, &args->seq_args, &hdr);
2089 encode_putfh(xdr, args->fh, &hdr);
2090 encode_open_downgrade(xdr, args, &hdr);
2091 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2092 encode_nops(&hdr);
1da177e4
LT		 2093}
2094
2095/*
2096 * Encode a LOCK request
2097 */
9f06c719
CL		 2098static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2099 struct nfs_lock_args *args)
1da177e4 2100{
1da177e4 2101 struct compound_hdr hdr = {
66cc0429 2102 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2103 };
1da177e4 2104
9f06c719
CL		 2105 encode_compound_hdr(xdr, req, &hdr);
2106 encode_sequence(xdr, &args->seq_args, &hdr);
2107 encode_putfh(xdr, args->fh, &hdr);
2108 encode_lock(xdr, args, &hdr);
d017931c 2109 encode_nops(&hdr);
1da177e4
LT		 2110}
2111
2112/*
2113 * Encode a LOCKT request
2114 */
9f06c719
CL		 2115static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2116 struct nfs_lockt_args *args)
1da177e4 2117{
1da177e4 2118 struct compound_hdr hdr = {
66cc0429 2119 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2120 };
1da177e4 2121
9f06c719
CL		 2122 encode_compound_hdr(xdr, req, &hdr);
2123 encode_sequence(xdr, &args->seq_args, &hdr);
2124 encode_putfh(xdr, args->fh, &hdr);
2125 encode_lockt(xdr, args, &hdr);
d017931c 2126 encode_nops(&hdr);
1da177e4
LT		 2127}
2128
2129/*
2130 * Encode a LOCKU request
2131 */
9f06c719
CL		 2132static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2133 struct nfs_locku_args *args)
1da177e4 2134{
1da177e4 2135 struct compound_hdr hdr = {
66cc0429 2136 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2137 };
1da177e4 2138
9f06c719
CL		 2139 encode_compound_hdr(xdr, req, &hdr);
2140 encode_sequence(xdr, &args->seq_args, &hdr);
2141 encode_putfh(xdr, args->fh, &hdr);
2142 encode_locku(xdr, args, &hdr);
d017931c 2143 encode_nops(&hdr);
1da177e4
LT		 2144}
2145
9f06c719
CL		 2146static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2147 struct xdr_stream *xdr,
2148 struct nfs_release_lockowner_args *args)
d3c7b7cc 2149{
d3c7b7cc
TM		 2150 struct compound_hdr hdr = {
2151 .minorversion = 0,
2152 };
2153
9f06c719
CL		 2154 encode_compound_hdr(xdr, req, &hdr);
2155 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
d3c7b7cc 2156 encode_nops(&hdr);
d3c7b7cc
TM		 2157}
2158
1da177e4
LT		 2159/*
2160 * Encode a READLINK request
2161 */
9f06c719
CL		 2162static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2163 const struct nfs4_readlink *args)
1da177e4 2164{
1da177e4 2165 struct compound_hdr hdr = {
66cc0429 2166 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2167 };
1da177e4 2168
9f06c719
CL		 2169 encode_compound_hdr(xdr, req, &hdr);
2170 encode_sequence(xdr, &args->seq_args, &hdr);
2171 encode_putfh(xdr, args->fh, &hdr);
2172 encode_readlink(xdr, args, req, &hdr);
e3a535e1 2173
28f56694 2174 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
e3a535e1 2175 args->pgbase, args->pglen);
d017931c 2176 encode_nops(&hdr);
1da177e4
LT		 2177}
2178
2179/*
2180 * Encode a READDIR request
2181 */
9f06c719
CL		 2182static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2183 const struct nfs4_readdir_arg *args)
1da177e4 2184{
1da177e4 2185 struct compound_hdr hdr = {
66cc0429 2186 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2187 };
1da177e4 2188
9f06c719
CL		 2189 encode_compound_hdr(xdr, req, &hdr);
2190 encode_sequence(xdr, &args->seq_args, &hdr);
2191 encode_putfh(xdr, args->fh, &hdr);
2192 encode_readdir(xdr, args, req, &hdr);
d6ac02df 2193
28f56694 2194 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
d6ac02df
TM		 2195 args->pgbase, args->count);
2196 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
28f56694 2197 __func__, hdr.replen << 2, args->pages,
d6ac02df 2198 args->pgbase, args->count);
d017931c 2199 encode_nops(&hdr);
1da177e4
LT		 2200}
2201
2202/*
2203 * Encode a READ request
2204 */
9f06c719
CL		 2205static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2206 struct nfs_readargs *args)
1da177e4 2207{
1da177e4 2208 struct compound_hdr hdr = {
66cc0429 2209 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2210 };
1da177e4 2211
9f06c719
CL		 2212 encode_compound_hdr(xdr, req, &hdr);
2213 encode_sequence(xdr, &args->seq_args, &hdr);
2214 encode_putfh(xdr, args->fh, &hdr);
2215 encode_read(xdr, args, &hdr);
1da177e4 2216
28f56694 2217 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
1da177e4 2218 args->pages, args->pgbase, args->count);
4f22ccc3 2219 req->rq_rcv_buf.flags |= XDRBUF_READ;
d017931c 2220 encode_nops(&hdr);
1da177e4
LT		 2221}
2222
2223/*
2224 * Encode an SETATTR request
2225 */
9f06c719
CL		 2226static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2227 struct nfs_setattrargs *args)
1da177e4 2228{
05d564fe 2229 struct compound_hdr hdr = {
66cc0429 2230 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
05d564fe 2231 };
05d564fe 2232
9f06c719
CL		 2233 encode_compound_hdr(xdr, req, &hdr);
2234 encode_sequence(xdr, &args->seq_args, &hdr);
2235 encode_putfh(xdr, args->fh, &hdr);
2236 encode_setattr(xdr, args, args->server, &hdr);
2237 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2238 encode_nops(&hdr);
1da177e4
LT		 2239}
2240
029d105e
BF		 2241/*
2242 * Encode a GETACL request
2243 */
9f06c719
CL		 2244static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2245 struct nfs_getaclargs *args)
029d105e 2246{
029d105e 2247 struct compound_hdr hdr = {
66cc0429 2248 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
029d105e 2249 };
28f56694 2250 uint32_t replen;
029d105e 2251
9f06c719
CL		 2252 encode_compound_hdr(xdr, req, &hdr);
2253 encode_sequence(xdr, &args->seq_args, &hdr);
2254 encode_putfh(xdr, args->fh, &hdr);
d327cf74 2255 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
9f06c719 2256 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
cf8cdbe5 2257
28f56694 2258 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
029d105e 2259 args->acl_pages, args->acl_pgbase, args->acl_len);
d017931c 2260 encode_nops(&hdr);
029d105e
BF		 2261}
2262
1da177e4
LT		 2263/*
2264 * Encode a WRITE request
2265 */
9f06c719
CL		 2266static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2267 struct nfs_writeargs *args)
1da177e4 2268{
1da177e4 2269 struct compound_hdr hdr = {
66cc0429 2270 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2271 };
1da177e4 2272
9f06c719
CL		 2273 encode_compound_hdr(xdr, req, &hdr);
2274 encode_sequence(xdr, &args->seq_args, &hdr);
2275 encode_putfh(xdr, args->fh, &hdr);
2276 encode_write(xdr, args, &hdr);
4f22ccc3 2277 req->rq_snd_buf.flags |= XDRBUF_WRITE;
9f06c719 2278 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2279 encode_nops(&hdr);
1da177e4
LT		 2280}
2281
2282/*
2283 * a COMMIT request
2284 */
9f06c719
CL		 2285static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2286 struct nfs_writeargs *args)
1da177e4 2287{
1da177e4 2288 struct compound_hdr hdr = {
66cc0429 2289 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2290 };
1da177e4 2291
9f06c719
CL		 2292 encode_compound_hdr(xdr, req, &hdr);
2293 encode_sequence(xdr, &args->seq_args, &hdr);
2294 encode_putfh(xdr, args->fh, &hdr);
2295 encode_commit(xdr, args, &hdr);
2296 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2297 encode_nops(&hdr);
1da177e4
LT		 2298}
2299
2300/*
2301 * FSINFO request
2302 */
9f06c719
CL		 2303static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2304 struct nfs4_fsinfo_arg *args)
1da177e4 2305{
1da177e4 2306 struct compound_hdr hdr = {
66cc0429 2307 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2308 };
1da177e4 2309
9f06c719
CL		 2310 encode_compound_hdr(xdr, req, &hdr);
2311 encode_sequence(xdr, &args->seq_args, &hdr);
2312 encode_putfh(xdr, args->fh, &hdr);
2313 encode_fsinfo(xdr, args->bitmask, &hdr);
d017931c 2314 encode_nops(&hdr);
1da177e4
LT		 2315}
2316
2317/*
2318 * a PATHCONF request
2319 */
9f06c719
CL		 2320static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2321 const struct nfs4_pathconf_arg *args)
1da177e4 2322{
1da177e4 2323 struct compound_hdr hdr = {
66cc0429 2324 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2325 };
1da177e4 2326
9f06c719
CL		 2327 encode_compound_hdr(xdr, req, &hdr);
2328 encode_sequence(xdr, &args->seq_args, &hdr);
2329 encode_putfh(xdr, args->fh, &hdr);
2330 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
cf8cdbe5 2331 &hdr);
d017931c 2332 encode_nops(&hdr);
1da177e4
LT		 2333}
2334
2335/*
2336 * a STATFS request
2337 */
9f06c719
CL		 2338static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2339 const struct nfs4_statfs_arg *args)
1da177e4 2340{
1da177e4 2341 struct compound_hdr hdr = {
66cc0429 2342 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2343 };
1da177e4 2344
9f06c719
CL		 2345 encode_compound_hdr(xdr, req, &hdr);
2346 encode_sequence(xdr, &args->seq_args, &hdr);
2347 encode_putfh(xdr, args->fh, &hdr);
2348 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
cf8cdbe5 2349 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
d017931c 2350 encode_nops(&hdr);
1da177e4
LT		 2351}
2352
2353/*
2354 * GETATTR_BITMAP request
2355 */
9f06c719
CL		 2356static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2357 struct xdr_stream *xdr,
2358 struct nfs4_server_caps_arg *args)
1da177e4 2359{
1da177e4 2360 struct compound_hdr hdr = {
66cc0429 2361 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2362 };
1da177e4 2363
9f06c719
CL		 2364 encode_compound_hdr(xdr, req, &hdr);
2365 encode_sequence(xdr, &args->seq_args, &hdr);
2366 encode_putfh(xdr, args->fhandle, &hdr);
2367 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
cf8cdbe5
AA		 2368 FATTR4_WORD0_LINK_SUPPORT|
2369 FATTR4_WORD0_SYMLINK_SUPPORT|
2370 FATTR4_WORD0_ACLSUPPORT, &hdr);
d017931c 2371 encode_nops(&hdr);
1da177e4
LT		 2372}
2373
2374/*
2375 * a RENEW request
2376 */
9f06c719
CL		 2377static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2378 struct nfs_client *clp)
1da177e4 2379{
1da177e4 2380 struct compound_hdr hdr = {
d017931c 2381 .nops = 0,
1da177e4
LT		 2382 };
2383
9f06c719
CL		 2384 encode_compound_hdr(xdr, req, &hdr);
2385 encode_renew(xdr, clp, &hdr);
d017931c 2386 encode_nops(&hdr);
1da177e4
LT		 2387}
2388
2389/*
2390 * a SETCLIENTID request
2391 */
9f06c719
CL		 2392static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2393 struct xdr_stream *xdr,
2394 struct nfs4_setclientid *sc)
1da177e4 2395{
1da177e4 2396 struct compound_hdr hdr = {
d017931c 2397 .nops = 0,
1da177e4
LT		 2398 };
2399
9f06c719
CL		 2400 encode_compound_hdr(xdr, req, &hdr);
2401 encode_setclientid(xdr, sc, &hdr);
d017931c 2402 encode_nops(&hdr);
1da177e4
LT		 2403}
2404
2405/*
2406 * a SETCLIENTID_CONFIRM request
2407 */
9f06c719
CL		 2408static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2409 struct xdr_stream *xdr,
2410 struct nfs4_setclientid_res *arg)
1da177e4 2411{
1da177e4 2412 struct compound_hdr hdr = {
d017931c 2413 .nops = 0,
1da177e4
LT		 2414 };
2415 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1da177e4 2416
9f06c719
CL		 2417 encode_compound_hdr(xdr, req, &hdr);
2418 encode_setclientid_confirm(xdr, arg, &hdr);
2419 encode_putrootfh(xdr, &hdr);
2420 encode_fsinfo(xdr, lease_bitmap, &hdr);
d017931c 2421 encode_nops(&hdr);
1da177e4
LT		 2422}
2423
2424/*
2425 * DELEGRETURN request
2426 */
9f06c719
CL		 2427static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2428 struct xdr_stream *xdr,
2429 const struct nfs4_delegreturnargs *args)
1da177e4 2430{
1da177e4 2431 struct compound_hdr hdr = {
66cc0429 2432 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1da177e4 2433 };
1da177e4 2434
9f06c719
CL		 2435 encode_compound_hdr(xdr, req, &hdr);
2436 encode_sequence(xdr, &args->seq_args, &hdr);
2437 encode_putfh(xdr, args->fhandle, &hdr);
2438 encode_delegreturn(xdr, args->stateid, &hdr);
2439 encode_getfattr(xdr, args->bitmask, &hdr);
d017931c 2440 encode_nops(&hdr);
1da177e4
LT		 2441}
2442
683b57b4
TM		 2443/*
2444 * Encode FS_LOCATIONS request
2445 */
9f06c719
CL		 2446static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2447 struct xdr_stream *xdr,
2448 struct nfs4_fs_locations_arg *args)
683b57b4 2449{
683b57b4 2450 struct compound_hdr hdr = {
66cc0429 2451 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
683b57b4 2452 };
28f56694 2453 uint32_t replen;
683b57b4 2454
9f06c719
CL		 2455 encode_compound_hdr(xdr, req, &hdr);
2456 encode_sequence(xdr, &args->seq_args, &hdr);
2457 encode_putfh(xdr, args->dir_fh, &hdr);
2458 encode_lookup(xdr, args->name, &hdr);
28f56694 2459 replen = hdr.replen; /* get the attribute into args->page */
9f06c719 2460 encode_fs_locations(xdr, args->bitmask, &hdr);
cf8cdbe5 2461
28f56694 2462 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
683b57b4 2463 0, PAGE_SIZE);
d017931c 2464 encode_nops(&hdr);
683b57b4
TM		 2465}
2466
99fe60d0
BH		 2467#if defined(CONFIG_NFS_V4_1)
2468/*
2469 * EXCHANGE_ID request
2470 */
9f06c719
CL		 2471static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2472 struct xdr_stream *xdr,
2473 struct nfs41_exchange_id_args *args)
99fe60d0 2474{
99fe60d0 2475 struct compound_hdr hdr = {
a4432345 2476 .minorversion = args->client->cl_mvops->minor_version,
99fe60d0
BH		 2477 };
2478
9f06c719
CL		 2479 encode_compound_hdr(xdr, req, &hdr);
2480 encode_exchange_id(xdr, args, &hdr);
99fe60d0 2481 encode_nops(&hdr);
99fe60d0 2482}
2050f0cc 2483
fc931582
AA		 2484/*
2485 * a CREATE_SESSION request
2486 */
9f06c719
CL		 2487static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2488 struct xdr_stream *xdr,
2489 struct nfs41_create_session_args *args)
fc931582 2490{
fc931582 2491 struct compound_hdr hdr = {
a4432345 2492 .minorversion = args->client->cl_mvops->minor_version,
fc931582
AA		 2493 };
2494
9f06c719
CL		 2495 encode_compound_hdr(xdr, req, &hdr);
2496 encode_create_session(xdr, args, &hdr);
fc931582 2497 encode_nops(&hdr);
fc931582
AA		 2498}
2499
0f3e66c6
AA		 2500/*
2501 * a DESTROY_SESSION request
2502 */
9f06c719
CL		 2503static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2504 struct xdr_stream *xdr,
2505 struct nfs4_session *session)
0f3e66c6 2506{
0f3e66c6 2507 struct compound_hdr hdr = {
a4432345 2508 .minorversion = session->clp->cl_mvops->minor_version,
0f3e66c6
AA		 2509 };
2510
9f06c719
CL		 2511 encode_compound_hdr(xdr, req, &hdr);
2512 encode_destroy_session(xdr, session, &hdr);
0f3e66c6 2513 encode_nops(&hdr);
0f3e66c6
AA		 2514}
2515
fc01cea9
AA		 2516/*
2517 * a SEQUENCE request
2518 */
9f06c719
CL		 2519static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2520 struct nfs4_sequence_args *args)
fc01cea9 2521{
fc01cea9
AA		 2522 struct compound_hdr hdr = {
2523 .minorversion = nfs4_xdr_minorversion(args),
2524 };
2525
9f06c719
CL		 2526 encode_compound_hdr(xdr, req, &hdr);
2527 encode_sequence(xdr, args, &hdr);
fc01cea9 2528 encode_nops(&hdr);
fc01cea9
AA		 2529}
2530
2050f0cc
AA		 2531/*
2532 * a GET_LEASE_TIME request
2533 */
9f06c719
CL		 2534static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2535 struct xdr_stream *xdr,
2536 struct nfs4_get_lease_time_args *args)
2050f0cc 2537{
2050f0cc
AA		 2538 struct compound_hdr hdr = {
2539 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2540 };
2541 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2542
9f06c719
CL		 2543 encode_compound_hdr(xdr, req, &hdr);
2544 encode_sequence(xdr, &args->la_seq_args, &hdr);
2545 encode_putrootfh(xdr, &hdr);
2546 encode_fsinfo(xdr, lease_bitmap, &hdr);
2050f0cc 2547 encode_nops(&hdr);
2050f0cc 2548}
18019753
RL		 2549
2550/*
2551 * a RECLAIM_COMPLETE request
2552 */
9f06c719
CL		 2553static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2554 struct xdr_stream *xdr,
2555 struct nfs41_reclaim_complete_args *args)
18019753 2556{
18019753
RL		 2557 struct compound_hdr hdr = {
2558 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2559 };
2560
9f06c719
CL		 2561 encode_compound_hdr(xdr, req, &hdr);
2562 encode_sequence(xdr, &args->seq_args, &hdr);
2563 encode_reclaim_complete(xdr, args, &hdr);
18019753 2564 encode_nops(&hdr);
18019753
RL		 2565}
2566
b1f69b75
AA		 2567/*
2568 * Encode GETDEVICEINFO request
2569 */
9f06c719
CL		 2570static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2571 struct xdr_stream *xdr,
2572 struct nfs4_getdeviceinfo_args *args)
b1f69b75 2573{
b1f69b75
AA		 2574 struct compound_hdr hdr = {
2575 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2576 };
2577
9f06c719
CL		 2578 encode_compound_hdr(xdr, req, &hdr);
2579 encode_sequence(xdr, &args->seq_args, &hdr);
2580 encode_getdeviceinfo(xdr, args, &hdr);
b1f69b75
AA		 2581
2582 /* set up reply kvec. Subtract notification bitmap max size (2)
2583 * so that notification bitmap is put in xdr_buf tail */
2584 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2585 args->pdev->pages, args->pdev->pgbase,
2586 args->pdev->pglen);
2587
2588 encode_nops(&hdr);
b1f69b75
AA		 2589}
2590
2591/*
2592 * Encode LAYOUTGET request
2593 */
9f06c719
CL		 2594static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2595 struct xdr_stream *xdr,
2596 struct nfs4_layoutget_args *args)
b1f69b75 2597{
b1f69b75
AA		 2598 struct compound_hdr hdr = {
2599 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2600 };
2601
9f06c719
CL		 2602 encode_compound_hdr(xdr, req, &hdr);
2603 encode_sequence(xdr, &args->seq_args, &hdr);
2604 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2605 encode_layoutget(xdr, args, &hdr);
b1f69b75 2606 encode_nops(&hdr);
b1f69b75 2607}
99fe60d0
BH		 2608#endif /* CONFIG_NFS_V4_1 */
2609
686841b3
BH		 2610static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2611{
2612 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2613 "Remaining buffer length is %tu words.\n",
2614 func, xdr->end - xdr->p);
2615}
1da177e4 2616
683b57b4 2617static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
1da177e4 2618{
8687b63a 2619 __be32 *p;
1da177e4 2620
c0eae66e
BH		 2621 p = xdr_inline_decode(xdr, 4);
2622 if (unlikely(!p))
2623 goto out_overflow;
cccddf4f 2624 *len = be32_to_cpup(p);
c0eae66e
BH		 2625 p = xdr_inline_decode(xdr, *len);
2626 if (unlikely(!p))
2627 goto out_overflow;
1da177e4
LT		 2628 *string = (char *)p;
2629 return 0;
c0eae66e
BH		 2630out_overflow:
2631 print_overflow_msg(__func__, xdr);
2632 return -EIO;
1da177e4
LT		 2633}
2634
2635static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2636{
8687b63a 2637 __be32 *p;
1da177e4 2638
c0eae66e
BH		 2639 p = xdr_inline_decode(xdr, 8);
2640 if (unlikely(!p))
2641 goto out_overflow;
6f723f77 2642 hdr->status = be32_to_cpup(p++);
cccddf4f 2643 hdr->taglen = be32_to_cpup(p);
6c0195a4 2644
c0eae66e
BH		 2645 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2646 if (unlikely(!p))
2647 goto out_overflow;
1da177e4
LT		 2648 hdr->tag = (char *)p;
2649 p += XDR_QUADLEN(hdr->taglen);
cccddf4f 2650 hdr->nops = be32_to_cpup(p);
aadf6152
BH		 2651 if (unlikely(hdr->nops < 1))
2652 return nfs4_stat_to_errno(hdr->status);
1da177e4 2653 return 0;
c0eae66e
BH		 2654out_overflow:
2655 print_overflow_msg(__func__, xdr);
2656 return -EIO;
1da177e4
LT		 2657}
2658
2659static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2660{
8687b63a 2661 __be32 *p;
1da177e4
LT		 2662 uint32_t opnum;
2663 int32_t nfserr;
2664
c0eae66e
BH		 2665 p = xdr_inline_decode(xdr, 8);
2666 if (unlikely(!p))
2667 goto out_overflow;
6f723f77 2668 opnum = be32_to_cpup(p++);
1da177e4 2669 if (opnum != expected) {
fe82a183
CL		 2670 dprintk("nfs: Server returned operation"
2671 " %d but we issued a request for %d\n",
1da177e4
LT		 2672 opnum, expected);
2673 return -EIO;
2674 }
cccddf4f 2675 nfserr = be32_to_cpup(p);
1da177e4 2676 if (nfserr != NFS_OK)
856dff3d 2677 return nfs4_stat_to_errno(nfserr);
1da177e4 2678 return 0;
c0eae66e
BH		 2679out_overflow:
2680 print_overflow_msg(__func__, xdr);
2681 return -EIO;
1da177e4
LT		 2682}
2683
2684/* Dummy routine */
adfa6f98 2685static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
1da177e4 2686{
8687b63a 2687 __be32 *p;
683b57b4 2688 unsigned int strlen;
1da177e4
LT		 2689 char *str;
2690
c0eae66e
BH		 2691 p = xdr_inline_decode(xdr, 12);
2692 if (likely(p))
2693 return decode_opaque_inline(xdr, &strlen, &str);
2694 print_overflow_msg(__func__, xdr);
2695 return -EIO;
1da177e4
LT		 2696}
2697
2698static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2699{
8687b63a
AV		 2700 uint32_t bmlen;
2701 __be32 *p;
1da177e4 2702
c0eae66e
BH		 2703 p = xdr_inline_decode(xdr, 4);
2704 if (unlikely(!p))
2705 goto out_overflow;
cccddf4f 2706 bmlen = be32_to_cpup(p);
1da177e4
LT		 2707
2708 bitmap[0] = bitmap[1] = 0;
c0eae66e
BH		 2709 p = xdr_inline_decode(xdr, (bmlen << 2));
2710 if (unlikely(!p))
2711 goto out_overflow;
1da177e4 2712 if (bmlen > 0) {
6f723f77 2713 bitmap[0] = be32_to_cpup(p++);
1da177e4 2714 if (bmlen > 1)
cccddf4f 2715 bitmap[1] = be32_to_cpup(p);
1da177e4
LT		 2716 }
2717 return 0;
c0eae66e
BH		 2718out_overflow:
2719 print_overflow_msg(__func__, xdr);
2720 return -EIO;
1da177e4
LT		 2721}
2722
8687b63a 2723static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
1da177e4 2724{
8687b63a 2725 __be32 *p;
1da177e4 2726
c0eae66e
BH		 2727 p = xdr_inline_decode(xdr, 4);
2728 if (unlikely(!p))
2729 goto out_overflow;
cccddf4f 2730 *attrlen = be32_to_cpup(p);
1da177e4
LT		 2731 *savep = xdr->p;
2732 return 0;
c0eae66e
BH		 2733out_overflow:
2734 print_overflow_msg(__func__, xdr);
2735 return -EIO;
1da177e4
LT		 2736}
2737
2738static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2739{
2740 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3388bff5
RB		 2741 int ret;
2742 ret = decode_attr_bitmap(xdr, bitmask);
2743 if (unlikely(ret < 0))
2744 return ret;
1da177e4
LT		 2745 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2746 } else
2747 bitmask[0] = bitmask[1] = 0;
44109241 2748 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
1da177e4
LT		 2749 return 0;
2750}
2751
2752static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2753{
8687b63a 2754 __be32 *p;
409924e4 2755 int ret = 0;
1da177e4
LT		 2756
2757 *type = 0;
2758 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2759 return -EIO;
2760 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
c0eae66e
BH		 2761 p = xdr_inline_decode(xdr, 4);
2762 if (unlikely(!p))
2763 goto out_overflow;
cccddf4f 2764 *type = be32_to_cpup(p);
1da177e4 2765 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3110ff80 2766 dprintk("%s: bad type %d\n", __func__, *type);
1da177e4
LT		 2767 return -EIO;
2768 }
2769 bitmap[0] &= ~FATTR4_WORD0_TYPE;
409924e4 2770 ret = NFS_ATTR_FATTR_TYPE;
1da177e4 2771 }
bca79478 2772 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
409924e4 2773 return ret;
c0eae66e
BH		 2774out_overflow:
2775 print_overflow_msg(__func__, xdr);
2776 return -EIO;
1da177e4
LT		 2777}
2778
2779static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2780{
8687b63a 2781 __be32 *p;
409924e4 2782 int ret = 0;
1da177e4
LT		 2783
2784 *change = 0;
2785 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2786 return -EIO;
2787 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
c0eae66e
BH		 2788 p = xdr_inline_decode(xdr, 8);
2789 if (unlikely(!p))
2790 goto out_overflow;
cccddf4f 2791 xdr_decode_hyper(p, change);
1da177e4 2792 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
409924e4 2793 ret = NFS_ATTR_FATTR_CHANGE;
1da177e4 2794 }
3110ff80 2795 dprintk("%s: change attribute=%Lu\n", __func__,
1da177e4 2796 (unsigned long long)*change);
409924e4 2797 return ret;
c0eae66e
BH		 2798out_overflow:
2799 print_overflow_msg(__func__, xdr);
2800 return -EIO;
1da177e4
LT		 2801}
2802
2803static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2804{
8687b63a 2805 __be32 *p;
409924e4 2806 int ret = 0;
1da177e4
LT		 2807
2808 *size = 0;
2809 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2810 return -EIO;
2811 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
c0eae66e
BH		 2812 p = xdr_inline_decode(xdr, 8);
2813 if (unlikely(!p))
2814 goto out_overflow;
cccddf4f 2815 xdr_decode_hyper(p, size);
1da177e4 2816 bitmap[0] &= ~FATTR4_WORD0_SIZE;
409924e4 2817 ret = NFS_ATTR_FATTR_SIZE;
1da177e4 2818 }
3110ff80 2819 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
409924e4 2820 return ret;
c0eae66e
BH		 2821out_overflow:
2822 print_overflow_msg(__func__, xdr);
2823 return -EIO;
1da177e4
LT		 2824}
2825
2826static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2827{
8687b63a 2828 __be32 *p;
1da177e4
LT		 2829
2830 *res = 0;
2831 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2832 return -EIO;
2833 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
c0eae66e
BH		 2834 p = xdr_inline_decode(xdr, 4);
2835 if (unlikely(!p))
2836 goto out_overflow;
cccddf4f 2837 *res = be32_to_cpup(p);
1da177e4
LT		 2838 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2839 }
3110ff80 2840 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
1da177e4 2841 return 0;
c0eae66e
BH		 2842out_overflow:
2843 print_overflow_msg(__func__, xdr);
2844 return -EIO;
1da177e4
LT		 2845}
2846
2847static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2848{
8687b63a 2849 __be32 *p;
1da177e4
LT		 2850
2851 *res = 0;
2852 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2853 return -EIO;
2854 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
c0eae66e
BH		 2855 p = xdr_inline_decode(xdr, 4);
2856 if (unlikely(!p))
2857 goto out_overflow;
cccddf4f 2858 *res = be32_to_cpup(p);
1da177e4
LT		 2859 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2860 }
3110ff80 2861 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
1da177e4 2862 return 0;
c0eae66e
BH		 2863out_overflow:
2864 print_overflow_msg(__func__, xdr);
2865 return -EIO;
1da177e4
LT		 2866}
2867
8b4bdcf8 2868static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
1da177e4 2869{
8687b63a 2870 __be32 *p;
409924e4 2871 int ret = 0;
1da177e4
LT		 2872
2873 fsid->major = 0;
2874 fsid->minor = 0;
2875 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2876 return -EIO;
2877 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
c0eae66e
BH		 2878 p = xdr_inline_decode(xdr, 16);
2879 if (unlikely(!p))
2880 goto out_overflow;
3ceb4dbb 2881 p = xdr_decode_hyper(p, &fsid->major);
cccddf4f 2882 xdr_decode_hyper(p, &fsid->minor);
1da177e4 2883 bitmap[0] &= ~FATTR4_WORD0_FSID;
409924e4 2884 ret = NFS_ATTR_FATTR_FSID;
1da177e4 2885 }
3110ff80 2886 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
1da177e4
LT		 2887 (unsigned long long)fsid->major,
2888 (unsigned long long)fsid->minor);
409924e4 2889 return ret;
c0eae66e
BH		 2890out_overflow:
2891 print_overflow_msg(__func__, xdr);
2892 return -EIO;
1da177e4
LT		 2893}
2894
2895static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2896{
8687b63a 2897 __be32 *p;
1da177e4
LT		 2898
2899 *res = 60;
2900 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2901 return -EIO;
2902 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
c0eae66e
BH		 2903 p = xdr_inline_decode(xdr, 4);
2904 if (unlikely(!p))
2905 goto out_overflow;
cccddf4f 2906 *res = be32_to_cpup(p);
1da177e4
LT		 2907 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2908 }
3110ff80 2909 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
1da177e4 2910 return 0;
c0eae66e
BH		 2911out_overflow:
2912 print_overflow_msg(__func__, xdr);
2913 return -EIO;
1da177e4
LT		 2914}
2915
ae42c70a
BS		 2916static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
2917{
2918 __be32 *p;
2919
2920 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
2921 return -EIO;
2922 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
2923 p = xdr_inline_decode(xdr, 4);
2924 if (unlikely(!p))
2925 goto out_overflow;
2926 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
2927 }
2928 return 0;
2929out_overflow:
2930 print_overflow_msg(__func__, xdr);
2931 return -EIO;
2932}
2933
2934static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
2935{
2936 __be32 *p;
2937 int len;
2938
7ad07353
TM		 2939 if (fh != NULL)
2940 memset(fh, 0, sizeof(*fh));
ae42c70a
BS		 2941
2942 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
2943 return -EIO;
2944 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
2945 p = xdr_inline_decode(xdr, 4);
2946 if (unlikely(!p))
2947 goto out_overflow;
2948 len = be32_to_cpup(p);
2949 if (len > NFS4_FHSIZE)
2950 return -EIO;
ae42c70a
BS		 2951 p = xdr_inline_decode(xdr, len);
2952 if (unlikely(!p))
2953 goto out_overflow;
7ad07353
TM		 2954 if (fh != NULL) {
2955 memcpy(fh->data, p, len);
2956 fh->size = len;
2957 }
ae42c70a
BS		 2958 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
2959 }
2960 return 0;
2961out_overflow:
2962 print_overflow_msg(__func__, xdr);
2963 return -EIO;
2964}
2965
1da177e4
LT		 2966static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2967{
8687b63a 2968 __be32 *p;
1da177e4
LT		 2969
2970 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2971 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2972 return -EIO;
2973 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
c0eae66e
BH		 2974 p = xdr_inline_decode(xdr, 4);
2975 if (unlikely(!p))
2976 goto out_overflow;
cccddf4f 2977 *res = be32_to_cpup(p);
1da177e4
LT		 2978 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2979 }
3110ff80 2980 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
1da177e4 2981 return 0;
c0eae66e
BH		 2982out_overflow:
2983 print_overflow_msg(__func__, xdr);
2984 return -EIO;
1da177e4
LT		 2985}
2986
2987static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2988{
8687b63a 2989 __be32 *p;
409924e4 2990 int ret = 0;
1da177e4
LT		 2991
2992 *fileid = 0;
2993 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2994 return -EIO;
2995 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
c0eae66e
BH		 2996 p = xdr_inline_decode(xdr, 8);
2997 if (unlikely(!p))
2998 goto out_overflow;
cccddf4f 2999 xdr_decode_hyper(p, fileid);
1da177e4 3000 bitmap[0] &= ~FATTR4_WORD0_FILEID;
409924e4 3001 ret = NFS_ATTR_FATTR_FILEID;
1da177e4 3002 }
3110ff80 3003 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
409924e4 3004 return ret;
c0eae66e
BH		 3005out_overflow:
3006 print_overflow_msg(__func__, xdr);
3007 return -EIO;
1da177e4
LT		 3008}
3009
99baf625
MN		 3010static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3011{
8687b63a 3012 __be32 *p;
409924e4 3013 int ret = 0;
99baf625
MN		 3014
3015 *fileid = 0;
3016 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3017 return -EIO;
3018 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
c0eae66e
BH		 3019 p = xdr_inline_decode(xdr, 8);
3020 if (unlikely(!p))
3021 goto out_overflow;
cccddf4f 3022 xdr_decode_hyper(p, fileid);
99baf625 3023 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
409924e4 3024 ret = NFS_ATTR_FATTR_FILEID;
99baf625 3025 }
3110ff80 3026 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
409924e4 3027 return ret;
c0eae66e
BH		 3028out_overflow:
3029 print_overflow_msg(__func__, xdr);
3030 return -EIO;
99baf625
MN		 3031}
3032
1da177e4
LT		 3033static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3034{
8687b63a 3035 __be32 *p;
1da177e4
LT		 3036 int status = 0;
3037
3038 *res = 0;
3039 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3040 return -EIO;
3041 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
c0eae66e
BH		 3042 p = xdr_inline_decode(xdr, 8);
3043 if (unlikely(!p))
3044 goto out_overflow;
cccddf4f 3045 xdr_decode_hyper(p, res);
1da177e4
LT		 3046 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3047 }
3110ff80 3048 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3049 return status;
c0eae66e
BH		 3050out_overflow:
3051 print_overflow_msg(__func__, xdr);
3052 return -EIO;
1da177e4
LT		 3053}
3054
3055static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3056{
8687b63a 3057 __be32 *p;
1da177e4
LT		 3058 int status = 0;
3059
3060 *res = 0;
3061 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3062 return -EIO;
3063 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
c0eae66e
BH		 3064 p = xdr_inline_decode(xdr, 8);
3065 if (unlikely(!p))
3066 goto out_overflow;
cccddf4f 3067 xdr_decode_hyper(p, res);
1da177e4
LT		 3068 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3069 }
3110ff80 3070 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3071 return status;
c0eae66e
BH		 3072out_overflow:
3073 print_overflow_msg(__func__, xdr);
3074 return -EIO;
1da177e4
LT		 3075}
3076
3077static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3078{
8687b63a 3079 __be32 *p;
1da177e4
LT		 3080 int status = 0;
3081
3082 *res = 0;
3083 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3084 return -EIO;
3085 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
c0eae66e
BH		 3086 p = xdr_inline_decode(xdr, 8);
3087 if (unlikely(!p))
3088 goto out_overflow;
cccddf4f 3089 xdr_decode_hyper(p, res);
1da177e4
LT		 3090 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3091 }
3110ff80 3092 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3093 return status;
c0eae66e
BH		 3094out_overflow:
3095 print_overflow_msg(__func__, xdr);
3096 return -EIO;
1da177e4
LT		 3097}
3098
7aaa0b3b
MN		 3099static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3100{
464ad6b1 3101 u32 n;
8687b63a 3102 __be32 *p;
7aaa0b3b
MN		 3103 int status = 0;
3104
c0eae66e
BH		 3105 p = xdr_inline_decode(xdr, 4);
3106 if (unlikely(!p))
3107 goto out_overflow;
cccddf4f 3108 n = be32_to_cpup(p);
33a43f28
AA		 3109 if (n == 0)
3110 goto root_path;
7aaa0b3b
MN		 3111 dprintk("path ");
3112 path->ncomponents = 0;
3113 while (path->ncomponents < n) {
3114 struct nfs4_string *component = &path->components[path->ncomponents];
3115 status = decode_opaque_inline(xdr, &component->len, &component->data);
3116 if (unlikely(status != 0))
3117 goto out_eio;
3118 if (path->ncomponents != n)
3119 dprintk("/");
3120 dprintk("%s", component->data);
3121 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3122 path->ncomponents++;
3123 else {
3124 dprintk("cannot parse %d components in path\n", n);
3125 goto out_eio;
3126 }
3127 }
3128out:
3129 dprintk("\n");
3130 return status;
33a43f28
AA		 3131root_path:
3132/* a root pathname is sent as a zero component4 */
3133 path->ncomponents = 1;
3134 path->components[0].len=0;
3135 path->components[0].data=NULL;
3136 dprintk("path /\n");
3137 goto out;
7aaa0b3b
MN		 3138out_eio:
3139 dprintk(" status %d", status);
3140 status = -EIO;
3141 goto out;
c0eae66e
BH		 3142out_overflow:
3143 print_overflow_msg(__func__, xdr);
3144 return -EIO;
7aaa0b3b
MN		 3145}
3146
3147static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
683b57b4
TM		 3148{
3149 int n;
8687b63a 3150 __be32 *p;
683b57b4
TM		 3151 int status = -EIO;
3152
3153 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3154 goto out;
3155 status = 0;
3156 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3157 goto out;
3110ff80 3158 dprintk("%s: fsroot ", __func__);
7aaa0b3b 3159 status = decode_pathname(xdr, &res->fs_path);
683b57b4
TM		 3160 if (unlikely(status != 0))
3161 goto out;
c0eae66e
BH		 3162 p = xdr_inline_decode(xdr, 4);
3163 if (unlikely(!p))
3164 goto out_overflow;
cccddf4f 3165 n = be32_to_cpup(p);
683b57b4
TM		 3166 if (n <= 0)
3167 goto out_eio;
3168 res->nlocations = 0;
3169 while (res->nlocations < n) {
464ad6b1 3170 u32 m;
7aaa0b3b 3171 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
683b57b4 3172
c0eae66e
BH		 3173 p = xdr_inline_decode(xdr, 4);
3174 if (unlikely(!p))
3175 goto out_overflow;
cccddf4f 3176 m = be32_to_cpup(p);
7aaa0b3b
MN		 3177
3178 loc->nservers = 0;
3110ff80 3179 dprintk("%s: servers ", __func__);
7aaa0b3b
MN		 3180 while (loc->nservers < m) {
3181 struct nfs4_string *server = &loc->servers[loc->nservers];
3182 status = decode_opaque_inline(xdr, &server->len, &server->data);
3183 if (unlikely(status != 0))
3184 goto out_eio;
3185 dprintk("%s ", server->data);
3186 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3187 loc->nservers++;
3188 else {
464ad6b1
CL		 3189 unsigned int i;
3190 dprintk("%s: using first %u of %u servers "
3191 "returned for location %u\n",
3110ff80 3192 __func__,
464ad6b1
CL		 3193 NFS4_FS_LOCATION_MAXSERVERS,
3194 m, res->nlocations);
7aaa0b3b 3195 for (i = loc->nservers; i < m; i++) {
2e42c3e2 3196 unsigned int len;
7aaa0b3b
MN		 3197 char *data;
3198 status = decode_opaque_inline(xdr, &len, &data);
3199 if (unlikely(status != 0))
3200 goto out_eio;
3201 }
3202 }
3203 }
3204 status = decode_pathname(xdr, &loc->rootpath);
683b57b4
TM		 3205 if (unlikely(status != 0))
3206 goto out_eio;
7aaa0b3b 3207 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
683b57b4
TM		 3208 res->nlocations++;
3209 }
409924e4
TM		 3210 if (res->nlocations != 0)
3211 status = NFS_ATTR_FATTR_V4_REFERRAL;
683b57b4 3212out:
3110ff80 3213 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
683b57b4 3214 return status;
c0eae66e
BH		 3215out_overflow:
3216 print_overflow_msg(__func__, xdr);
683b57b4
TM		 3217out_eio:
3218 status = -EIO;
3219 goto out;
3220}
3221
1da177e4
LT		 3222static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3223{
8687b63a 3224 __be32 *p;
1da177e4
LT		 3225 int status = 0;
3226
3227 *res = 0;
3228 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3229 return -EIO;
3230 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
c0eae66e
BH		 3231 p = xdr_inline_decode(xdr, 8);
3232 if (unlikely(!p))
3233 goto out_overflow;
cccddf4f 3234 xdr_decode_hyper(p, res);
1da177e4
LT		 3235 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3236 }
3110ff80 3237 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3238 return status;
c0eae66e
BH		 3239out_overflow:
3240 print_overflow_msg(__func__, xdr);
3241 return -EIO;
1da177e4
LT		 3242}
3243
3244static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3245{
8687b63a 3246 __be32 *p;
1da177e4
LT		 3247 int status = 0;
3248
3249 *maxlink = 1;
3250 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3251 return -EIO;
3252 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
c0eae66e
BH		 3253 p = xdr_inline_decode(xdr, 4);
3254 if (unlikely(!p))
3255 goto out_overflow;
cccddf4f 3256 *maxlink = be32_to_cpup(p);
1da177e4
LT		 3257 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3258 }
3110ff80 3259 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
1da177e4 3260 return status;
c0eae66e
BH		 3261out_overflow:
3262 print_overflow_msg(__func__, xdr);
3263 return -EIO;
1da177e4
LT		 3264}
3265
3266static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3267{
8687b63a 3268 __be32 *p;
1da177e4
LT		 3269 int status = 0;
3270
3271 *maxname = 1024;
3272 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3273 return -EIO;
3274 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
c0eae66e
BH		 3275 p = xdr_inline_decode(xdr, 4);
3276 if (unlikely(!p))
3277 goto out_overflow;
cccddf4f 3278 *maxname = be32_to_cpup(p);
1da177e4
LT		 3279 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3280 }
3110ff80 3281 dprintk("%s: maxname=%u\n", __func__, *maxname);
1da177e4 3282 return status;
c0eae66e
BH		 3283out_overflow:
3284 print_overflow_msg(__func__, xdr);
3285 return -EIO;
1da177e4
LT		 3286}
3287
3288static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3289{
8687b63a 3290 __be32 *p;
1da177e4
LT		 3291 int status = 0;
3292
3293 *res = 1024;
3294 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3295 return -EIO;
3296 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3297 uint64_t maxread;
c0eae66e
BH		 3298 p = xdr_inline_decode(xdr, 8);
3299 if (unlikely(!p))
3300 goto out_overflow;
cccddf4f 3301 xdr_decode_hyper(p, &maxread);
1da177e4
LT		 3302 if (maxread > 0x7FFFFFFF)
3303 maxread = 0x7FFFFFFF;
3304 *res = (uint32_t)maxread;
3305 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3306 }
3110ff80 3307 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
1da177e4 3308 return status;
c0eae66e
BH		 3309out_overflow:
3310 print_overflow_msg(__func__, xdr);
3311 return -EIO;
1da177e4
LT		 3312}
3313
3314static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3315{
8687b63a 3316 __be32 *p;
1da177e4
LT		 3317 int status = 0;
3318
3319 *res = 1024;
3320 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3321 return -EIO;
3322 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3323 uint64_t maxwrite;
c0eae66e
BH		 3324 p = xdr_inline_decode(xdr, 8);
3325 if (unlikely(!p))
3326 goto out_overflow;
cccddf4f 3327 xdr_decode_hyper(p, &maxwrite);
1da177e4
LT		 3328 if (maxwrite > 0x7FFFFFFF)
3329 maxwrite = 0x7FFFFFFF;
3330 *res = (uint32_t)maxwrite;
3331 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3332 }
3110ff80 3333 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
1da177e4 3334 return status;
c0eae66e
BH		 3335out_overflow:
3336 print_overflow_msg(__func__, xdr);
3337 return -EIO;
1da177e4
LT		 3338}
3339
bca79478 3340static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
1da177e4 3341{
bca79478 3342 uint32_t tmp;
8687b63a 3343 __be32 *p;
409924e4 3344 int ret = 0;
1da177e4
LT		 3345
3346 *mode = 0;
3347 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3348 return -EIO;
3349 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
c0eae66e
BH		 3350 p = xdr_inline_decode(xdr, 4);
3351 if (unlikely(!p))
3352 goto out_overflow;
cccddf4f 3353 tmp = be32_to_cpup(p);
bca79478 3354 *mode = tmp & ~S_IFMT;
1da177e4 3355 bitmap[1] &= ~FATTR4_WORD1_MODE;
409924e4 3356 ret = NFS_ATTR_FATTR_MODE;
1da177e4 3357 }
3110ff80 3358 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
409924e4 3359 return ret;
c0eae66e
BH		 3360out_overflow:
3361 print_overflow_msg(__func__, xdr);
3362 return -EIO;
1da177e4
LT		 3363}
3364
3365static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3366{
8687b63a 3367 __be32 *p;
409924e4 3368 int ret = 0;
1da177e4
LT		 3369
3370 *nlink = 1;
3371 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3372 return -EIO;
3373 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
c0eae66e
BH		 3374 p = xdr_inline_decode(xdr, 4);
3375 if (unlikely(!p))
3376 goto out_overflow;
cccddf4f 3377 *nlink = be32_to_cpup(p);
1da177e4 3378 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
409924e4 3379 ret = NFS_ATTR_FATTR_NLINK;
1da177e4 3380 }
3110ff80 3381 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
409924e4 3382 return ret;
c0eae66e
BH		 3383out_overflow:
3384 print_overflow_msg(__func__, xdr);
3385 return -EIO;
1da177e4
LT		 3386}
3387
80e52ace
TM		 3388static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3389 struct nfs_client *clp, uint32_t *uid, int may_sleep)
1da177e4 3390{
8687b63a
AV		 3391 uint32_t len;
3392 __be32 *p;
409924e4 3393 int ret = 0;
1da177e4
LT		 3394
3395 *uid = -2;
3396 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3397 return -EIO;
3398 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
c0eae66e
BH		 3399 p = xdr_inline_decode(xdr, 4);
3400 if (unlikely(!p))
3401 goto out_overflow;
cccddf4f 3402 len = be32_to_cpup(p);
c0eae66e
BH		 3403 p = xdr_inline_decode(xdr, len);
3404 if (unlikely(!p))
3405 goto out_overflow;
80e52ace
TM		 3406 if (!may_sleep) {
3407 /* do nothing */
3408 } else if (len < XDR_MAX_NETOBJ) {
409924e4
TM		 3409 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3410 ret = NFS_ATTR_FATTR_OWNER;
3411 else
1da177e4 3412 dprintk("%s: nfs_map_name_to_uid failed!\n",
3110ff80 3413 __func__);
1da177e4 3414 } else
fe82a183 3415 dprintk("%s: name too long (%u)!\n",
3110ff80 3416 __func__, len);
1da177e4
LT		 3417 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3418 }
3110ff80 3419 dprintk("%s: uid=%d\n", __func__, (int)*uid);
409924e4 3420 return ret;
c0eae66e
BH		 3421out_overflow:
3422 print_overflow_msg(__func__, xdr);
3423 return -EIO;
1da177e4
LT		 3424}
3425
80e52ace
TM		 3426static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3427 struct nfs_client *clp, uint32_t *gid, int may_sleep)
1da177e4 3428{
8687b63a
AV		 3429 uint32_t len;
3430 __be32 *p;
409924e4 3431 int ret = 0;
1da177e4
LT		 3432
3433 *gid = -2;
3434 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3435 return -EIO;
3436 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
c0eae66e
BH		 3437 p = xdr_inline_decode(xdr, 4);
3438 if (unlikely(!p))
3439 goto out_overflow;
cccddf4f 3440 len = be32_to_cpup(p);
c0eae66e
BH		 3441 p = xdr_inline_decode(xdr, len);
3442 if (unlikely(!p))
3443 goto out_overflow;
80e52ace
TM		 3444 if (!may_sleep) {
3445 /* do nothing */
3446 } else if (len < XDR_MAX_NETOBJ) {
409924e4
TM		 3447 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3448 ret = NFS_ATTR_FATTR_GROUP;
3449 else
1da177e4 3450 dprintk("%s: nfs_map_group_to_gid failed!\n",
3110ff80 3451 __func__);
1da177e4 3452 } else
fe82a183 3453 dprintk("%s: name too long (%u)!\n",
3110ff80 3454 __func__, len);
1da177e4
LT		 3455 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3456 }
3110ff80 3457 dprintk("%s: gid=%d\n", __func__, (int)*gid);
409924e4 3458 return ret;
c0eae66e
BH		 3459out_overflow:
3460 print_overflow_msg(__func__, xdr);
3461 return -EIO;
1da177e4
LT		 3462}
3463
3464static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3465{
8687b63a
AV		 3466 uint32_t major = 0, minor = 0;
3467 __be32 *p;
409924e4 3468 int ret = 0;
1da177e4
LT		 3469
3470 *rdev = MKDEV(0,0);
3471 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3472 return -EIO;
3473 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3474 dev_t tmp;
3475
c0eae66e
BH		 3476 p = xdr_inline_decode(xdr, 8);
3477 if (unlikely(!p))
3478 goto out_overflow;
6f723f77 3479 major = be32_to_cpup(p++);
cccddf4f 3480 minor = be32_to_cpup(p);
1da177e4
LT		 3481 tmp = MKDEV(major, minor);
3482 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3483 *rdev = tmp;
3484 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
409924e4 3485 ret = NFS_ATTR_FATTR_RDEV;
1da177e4 3486 }
3110ff80 3487 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
409924e4 3488 return ret;
c0eae66e
BH		 3489out_overflow:
3490 print_overflow_msg(__func__, xdr);
3491 return -EIO;
1da177e4
LT		 3492}
3493
3494static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3495{
8687b63a 3496 __be32 *p;
1da177e4
LT		 3497 int status = 0;
3498
3499 *res = 0;
3500 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3501 return -EIO;
3502 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
c0eae66e
BH		 3503 p = xdr_inline_decode(xdr, 8);
3504 if (unlikely(!p))
3505 goto out_overflow;
cccddf4f 3506 xdr_decode_hyper(p, res);
1da177e4
LT		 3507 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3508 }
3110ff80 3509 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3510 return status;
c0eae66e
BH		 3511out_overflow:
3512 print_overflow_msg(__func__, xdr);
3513 return -EIO;
1da177e4
LT		 3514}
3515
3516static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3517{
8687b63a 3518 __be32 *p;
1da177e4
LT		 3519 int status = 0;
3520
3521 *res = 0;
3522 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3523 return -EIO;
3524 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
c0eae66e
BH		 3525 p = xdr_inline_decode(xdr, 8);
3526 if (unlikely(!p))
3527 goto out_overflow;
cccddf4f 3528 xdr_decode_hyper(p, res);
1da177e4
LT		 3529 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3530 }
3110ff80 3531 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3532 return status;
c0eae66e
BH		 3533out_overflow:
3534 print_overflow_msg(__func__, xdr);
3535 return -EIO;
1da177e4
LT		 3536}
3537
3538static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3539{
8687b63a 3540 __be32 *p;
1da177e4
LT		 3541 int status = 0;
3542
3543 *res = 0;
3544 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3545 return -EIO;
3546 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
c0eae66e
BH		 3547 p = xdr_inline_decode(xdr, 8);
3548 if (unlikely(!p))
3549 goto out_overflow;
cccddf4f 3550 xdr_decode_hyper(p, res);
1da177e4
LT		 3551 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3552 }
3110ff80 3553 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
1da177e4 3554 return status;
c0eae66e
BH		 3555out_overflow:
3556 print_overflow_msg(__func__, xdr);
3557 return -EIO;
1da177e4
LT		 3558}
3559
3560static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3561{
8687b63a 3562 __be32 *p;
409924e4 3563 int ret = 0;
1da177e4
LT		 3564
3565 *used = 0;
3566 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3567 return -EIO;
3568 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
c0eae66e
BH		 3569 p = xdr_inline_decode(xdr, 8);
3570 if (unlikely(!p))
3571 goto out_overflow;
cccddf4f 3572 xdr_decode_hyper(p, used);
1da177e4 3573 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
409924e4 3574 ret = NFS_ATTR_FATTR_SPACE_USED;
1da177e4 3575 }
3110ff80 3576 dprintk("%s: space used=%Lu\n", __func__,
1da177e4 3577 (unsigned long long)*used);
409924e4 3578 return ret;
c0eae66e
BH		 3579out_overflow:
3580 print_overflow_msg(__func__, xdr);
3581 return -EIO;
1da177e4
LT		 3582}
3583
3584static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3585{
8687b63a 3586 __be32 *p;
1da177e4
LT		 3587 uint64_t sec;
3588 uint32_t nsec;
3589
c0eae66e
BH		 3590 p = xdr_inline_decode(xdr, 12);
3591 if (unlikely(!p))
3592 goto out_overflow;
3ceb4dbb 3593 p = xdr_decode_hyper(p, &sec);
cccddf4f 3594 nsec = be32_to_cpup(p);
1da177e4
LT		 3595 time->tv_sec = (time_t)sec;
3596 time->tv_nsec = (long)nsec;
3597 return 0;
c0eae66e
BH		 3598out_overflow:
3599 print_overflow_msg(__func__, xdr);
3600 return -EIO;
1da177e4
LT		 3601}
3602
3603static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3604{
3605 int status = 0;
3606
3607 time->tv_sec = 0;
3608 time->tv_nsec = 0;
3609 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3610 return -EIO;
3611 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3612 status = decode_attr_time(xdr, time);
409924e4
TM		 3613 if (status == 0)
3614 status = NFS_ATTR_FATTR_ATIME;
1da177e4
LT		 3615 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3616 }
3110ff80 3617 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
1da177e4
LT		 3618 return status;
3619}
3620
3621static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3622{
3623 int status = 0;
3624
3625 time->tv_sec = 0;
3626 time->tv_nsec = 0;
3627 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3628 return -EIO;
3629 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3630 status = decode_attr_time(xdr, time);
409924e4
TM		 3631 if (status == 0)
3632 status = NFS_ATTR_FATTR_CTIME;
1da177e4
LT		 3633 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3634 }
3110ff80 3635 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
1da177e4
LT		 3636 return status;
3637}
3638
55b6e774
RL		 3639static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
3640 struct timespec *time)
3641{
3642 int status = 0;
3643
3644 time->tv_sec = 0;
3645 time->tv_nsec = 0;
3646 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
3647 return -EIO;
3648 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
3649 status = decode_attr_time(xdr, time);
3650 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
3651 }
3652 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
3653 (long)time->tv_nsec);
3654 return status;
3655}
3656
1da177e4
LT		 3657static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3658{
3659 int status = 0;
3660
3661 time->tv_sec = 0;
3662 time->tv_nsec = 0;
3663 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3664 return -EIO;
3665 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3666 status = decode_attr_time(xdr, time);
409924e4
TM		 3667 if (status == 0)
3668 status = NFS_ATTR_FATTR_MTIME;
1da177e4
LT		 3669 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3670 }
3110ff80 3671 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
1da177e4
LT		 3672 return status;
3673}
3674
8687b63a 3675static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
1da177e4
LT		 3676{
3677 unsigned int attrwords = XDR_QUADLEN(attrlen);
3678 unsigned int nwords = xdr->p - savep;
3679
3680 if (unlikely(attrwords != nwords)) {
fe82a183
CL		 3681 dprintk("%s: server returned incorrect attribute length: "
3682 "%u %c %u\n",
3110ff80 3683 __func__,
1da177e4
LT		 3684 attrwords << 2,
3685 (attrwords < nwords) ? '<' : '>',
3686 nwords << 2);
3687 return -EIO;
3688 }
3689 return 0;
3690}
3691
3692static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3693{
8687b63a 3694 __be32 *p;
1da177e4 3695
c0eae66e
BH		 3696 p = xdr_inline_decode(xdr, 20);
3697 if (unlikely(!p))
3698 goto out_overflow;
6f723f77 3699 cinfo->atomic = be32_to_cpup(p++);
3ceb4dbb 3700 p = xdr_decode_hyper(p, &cinfo->before);
cccddf4f 3701 xdr_decode_hyper(p, &cinfo->after);
1da177e4 3702 return 0;
c0eae66e
BH		 3703out_overflow:
3704 print_overflow_msg(__func__, xdr);
3705 return -EIO;
1da177e4
LT		 3706}
3707
3708static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3709{
8687b63a 3710 __be32 *p;
1da177e4
LT		 3711 uint32_t supp, acc;
3712 int status;
3713
3714 status = decode_op_hdr(xdr, OP_ACCESS);
3715 if (status)
3716 return status;
c0eae66e
BH		 3717 p = xdr_inline_decode(xdr, 8);
3718 if (unlikely(!p))
3719 goto out_overflow;
6f723f77 3720 supp = be32_to_cpup(p++);
cccddf4f 3721 acc = be32_to_cpup(p);
1da177e4
LT		 3722 access->supported = supp;
3723 access->access = acc;
3724 return 0;
c0eae66e
BH		 3725out_overflow:
3726 print_overflow_msg(__func__, xdr);
3727 return -EIO;
1da177e4
LT		 3728}
3729
07d30434 3730static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
1da177e4 3731{
8687b63a 3732 __be32 *p;
07d30434
BH		 3733
3734 p = xdr_inline_decode(xdr, len);
3735 if (likely(p)) {
3736 memcpy(buf, p, len);
3737 return 0;
3738 }
3739 print_overflow_msg(__func__, xdr);
3740 return -EIO;
3741}
3742
3743static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3744{
3745 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
3746}
3747
3748static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3749{
1da177e4
LT		 3750 int status;
3751
3752 status = decode_op_hdr(xdr, OP_CLOSE);
c1d51931
TM		 3753 if (status != -EIO)
3754 nfs_increment_open_seqid(status, res->seqid);
07d30434
BH		 3755 if (!status)
3756 status = decode_stateid(xdr, &res->stateid);
3757 return status;
1da177e4
LT		 3758}
3759
db942bbd
BH		 3760static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3761{
3762 return decode_opaque_fixed(xdr, verifier, 8);
1da177e4
LT		 3763}
3764
3765static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3766{
1da177e4
LT		 3767 int status;
3768
3769 status = decode_op_hdr(xdr, OP_COMMIT);
db942bbd
BH		 3770 if (!status)
3771 status = decode_verifier(xdr, res->verf->verifier);
3772 return status;
1da177e4
LT		 3773}
3774
3775static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3776{
8687b63a 3777 __be32 *p;
1da177e4
LT		 3778 uint32_t bmlen;
3779 int status;
3780
3781 status = decode_op_hdr(xdr, OP_CREATE);
3782 if (status)
3783 return status;
3784 if ((status = decode_change_info(xdr, cinfo)))
3785 return status;
c0eae66e
BH		 3786 p = xdr_inline_decode(xdr, 4);
3787 if (unlikely(!p))
3788 goto out_overflow;
cccddf4f 3789 bmlen = be32_to_cpup(p);
c0eae66e
BH		 3790 p = xdr_inline_decode(xdr, bmlen << 2);
3791 if (likely(p))
3792 return 0;
3793out_overflow:
3794 print_overflow_msg(__func__, xdr);
3795 return -EIO;
1da177e4
LT		 3796}
3797
3798static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3799{
8687b63a 3800 __be32 *savep;
6c0195a4 3801 uint32_t attrlen, bitmap[2] = {0};
1da177e4
LT		 3802 int status;
3803
3804 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3805 goto xdr_error;
3806 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3807 goto xdr_error;
3808 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3809 goto xdr_error;
3810 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3811 goto xdr_error;
3812 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3813 goto xdr_error;
3814 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3815 goto xdr_error;
3816 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3817 goto xdr_error;
3818 status = verify_attr_len(xdr, savep, attrlen);
3819xdr_error:
3110ff80 3820 dprintk("%s: xdr returned %d!\n", __func__, -status);
1da177e4
LT		 3821 return status;
3822}
6c0195a4 3823
1da177e4
LT		 3824static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3825{
8687b63a 3826 __be32 *savep;
6c0195a4 3827 uint32_t attrlen, bitmap[2] = {0};
1da177e4 3828 int status;
6c0195a4 3829
1da177e4
LT		 3830 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3831 goto xdr_error;
3832 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3833 goto xdr_error;
3834 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3835 goto xdr_error;
3836
3837 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3838 goto xdr_error;
3839 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3840 goto xdr_error;
3841 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3842 goto xdr_error;
3843 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3844 goto xdr_error;
3845 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3846 goto xdr_error;
3847 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3848 goto xdr_error;
3849
3850 status = verify_attr_len(xdr, savep, attrlen);
3851xdr_error:
3110ff80 3852 dprintk("%s: xdr returned %d!\n", __func__, -status);
1da177e4
LT		 3853 return status;
3854}
3855
3856static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3857{
8687b63a 3858 __be32 *savep;
6c0195a4 3859 uint32_t attrlen, bitmap[2] = {0};
1da177e4 3860 int status;
6c0195a4 3861
1da177e4
LT		 3862 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3863 goto xdr_error;
3864 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3865 goto xdr_error;
3866 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3867 goto xdr_error;
3868
3869 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3870 goto xdr_error;
3871 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3872 goto xdr_error;
3873
3874 status = verify_attr_len(xdr, savep, attrlen);
3875xdr_error:
3110ff80 3876 dprintk("%s: xdr returned %d!\n", __func__, -status);
1da177e4
LT		 3877 return status;
3878}
3879
ae42c70a
BS		 3880static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
3881 struct nfs_fattr *fattr, struct nfs_fh *fh,
80e52ace 3882 const struct nfs_server *server, int may_sleep)
1da177e4 3883{
bca79478
TM		 3884 int status;
3885 umode_t fmode = 0;
99baf625 3886 uint64_t fileid;
ae42c70a 3887 uint32_t type;
1da177e4 3888
f26c7a78
TM		 3889 status = decode_attr_type(xdr, bitmap, &type);
3890 if (status < 0)
1da177e4 3891 goto xdr_error;
409924e4
TM		 3892 fattr->mode = 0;
3893 if (status != 0) {
3894 fattr->mode |= nfs_type2fmt[type];
3895 fattr->valid |= status;
3896 }
1da177e4 3897
f26c7a78
TM		 3898 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3899 if (status < 0)
1da177e4 3900 goto xdr_error;
409924e4 3901 fattr->valid |= status;
f26c7a78
TM		 3902
3903 status = decode_attr_size(xdr, bitmap, &fattr->size);
3904 if (status < 0)
1da177e4 3905 goto xdr_error;
409924e4 3906 fattr->valid |= status;
f26c7a78
TM		 3907
3908 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3909 if (status < 0)
1da177e4 3910 goto xdr_error;
409924e4 3911 fattr->valid |= status;
f26c7a78 3912
ae42c70a
BS		 3913 status = decode_attr_error(xdr, bitmap);
3914 if (status < 0)
3915 goto xdr_error;
3916
3917 status = decode_attr_filehandle(xdr, bitmap, fh);
3918 if (status < 0)
3919 goto xdr_error;
3920
f26c7a78
TM		 3921 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3922 if (status < 0)
1da177e4 3923 goto xdr_error;
409924e4 3924 fattr->valid |= status;
f26c7a78
TM		 3925
3926 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
7aaa0b3b 3927 struct nfs4_fs_locations,
f26c7a78
TM		 3928 fattr));
3929 if (status < 0)
683b57b4 3930 goto xdr_error;
409924e4 3931 fattr->valid |= status;
f26c7a78
TM		 3932
3933 status = decode_attr_mode(xdr, bitmap, &fmode);
3934 if (status < 0)
1da177e4 3935 goto xdr_error;
409924e4
TM		 3936 if (status != 0) {
3937 fattr->mode |= fmode;
3938 fattr->valid |= status;
3939 }
f26c7a78
TM		 3940
3941 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3942 if (status < 0)
1da177e4 3943 goto xdr_error;
409924e4 3944 fattr->valid |= status;
f26c7a78 3945
80e52ace
TM		 3946 status = decode_attr_owner(xdr, bitmap, server->nfs_client,
3947 &fattr->uid, may_sleep);
f26c7a78 3948 if (status < 0)
1da177e4 3949 goto xdr_error;
409924e4 3950 fattr->valid |= status;
f26c7a78 3951
80e52ace
TM		 3952 status = decode_attr_group(xdr, bitmap, server->nfs_client,
3953 &fattr->gid, may_sleep);
f26c7a78 3954 if (status < 0)
1da177e4 3955 goto xdr_error;
409924e4 3956 fattr->valid |= status;
f26c7a78
TM		 3957
3958 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3959 if (status < 0)
1da177e4 3960 goto xdr_error;
409924e4 3961 fattr->valid |= status;
f26c7a78
TM		 3962
3963 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3964 if (status < 0)
1da177e4 3965 goto xdr_error;
409924e4 3966 fattr->valid |= status;
f26c7a78
TM		 3967
3968 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3969 if (status < 0)
1da177e4 3970 goto xdr_error;
409924e4 3971 fattr->valid |= status;
f26c7a78
TM		 3972
3973 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3974 if (status < 0)
1da177e4 3975 goto xdr_error;
409924e4 3976 fattr->valid |= status;
f26c7a78
TM		 3977
3978 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3979 if (status < 0)
1da177e4 3980 goto xdr_error;
409924e4 3981 fattr->valid |= status;
f26c7a78
TM		 3982
3983 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3984 if (status < 0)
99baf625 3985 goto xdr_error;
3201f3dd 3986 if (status != 0 && !(fattr->valid & status)) {
99baf625 3987 fattr->fileid = fileid;
409924e4
TM		 3988 fattr->valid |= status;
3989 }
f26c7a78 3990
ae42c70a
BS		 3991xdr_error:
3992 dprintk("%s: xdr returned %d\n", __func__, -status);
3993 return status;
3994}
3995
3996static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
3997 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
3998{
3999 __be32 *savep;
4000 uint32_t attrlen,
4001 bitmap[2] = {0};
4002 int status;
4003
4004 status = decode_op_hdr(xdr, OP_GETATTR);
4005 if (status < 0)
4006 goto xdr_error;
4007
4008 status = decode_attr_bitmap(xdr, bitmap);
4009 if (status < 0)
4010 goto xdr_error;
4011
4012 status = decode_attr_length(xdr, &attrlen, &savep);
4013 if (status < 0)
4014 goto xdr_error;
4015
4016 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4017 if (status < 0)
4018 goto xdr_error;
4019
f26c7a78 4020 status = verify_attr_len(xdr, savep, attrlen);
1da177e4 4021xdr_error:
3110ff80 4022 dprintk("%s: xdr returned %d\n", __func__, -status);
1da177e4
LT		 4023 return status;
4024}
4025
ae42c70a
BS		 4026static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4027 const struct nfs_server *server, int may_sleep)
4028{
4029 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4030}
1da177e4 4031
504913fb
AA		 4032/*
4033 * Decode potentially multiple layout types. Currently we only support
4034 * one layout driver per file system.
4035 */
4036static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4037 uint32_t *layouttype)
4038{
4039 uint32_t *p;
4040 int num;
4041
4042 p = xdr_inline_decode(xdr, 4);
4043 if (unlikely(!p))
4044 goto out_overflow;
4045 num = be32_to_cpup(p);
4046
4047 /* pNFS is not supported by the underlying file system */
4048 if (num == 0) {
4049 *layouttype = 0;
4050 return 0;
4051 }
4052 if (num > 1)
4053 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4054 "per filesystem not supported\n", __func__);
4055
4056 /* Decode and set first layout type, move xdr->p past unused types */
4057 p = xdr_inline_decode(xdr, num * 4);
4058 if (unlikely(!p))
4059 goto out_overflow;
4060 *layouttype = be32_to_cpup(p);
4061 return 0;
4062out_overflow:
4063 print_overflow_msg(__func__, xdr);
4064 return -EIO;
4065}
4066
4067/*
4068 * The type of file system exported.
4069 * Note we must ensure that layouttype is set in any non-error case.
4070 */
4071static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4072 uint32_t *layouttype)
4073{
4074 int status = 0;
4075
4076 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4077 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4078 return -EIO;
4079 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4080 status = decode_first_pnfs_layout_type(xdr, layouttype);
4081 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4082 } else
4083 *layouttype = 0;
4084 return status;
4085}
4086
1da177e4
LT		 4087static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4088{
8687b63a 4089 __be32 *savep;
1da177e4
LT		 4090 uint32_t attrlen, bitmap[2];
4091 int status;
4092
4093 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4094 goto xdr_error;
4095 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4096 goto xdr_error;
4097 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4098 goto xdr_error;
4099
4100 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4101
4102 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4103 goto xdr_error;
4104 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4105 goto xdr_error;
4106 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4107 goto xdr_error;
4108 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4109 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4110 goto xdr_error;
4111 fsinfo->wtpref = fsinfo->wtmax;
55b6e774 4112 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
504913fb
AA		 4113 if (status != 0)
4114 goto xdr_error;
4115 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
55b6e774
RL		 4116 if (status != 0)
4117 goto xdr_error;
1da177e4
LT		 4118
4119 status = verify_attr_len(xdr, savep, attrlen);
4120xdr_error:
3110ff80 4121 dprintk("%s: xdr returned %d!\n", __func__, -status);
1da177e4
LT		 4122 return status;
4123}
4124
4125static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4126{
8687b63a 4127 __be32 *p;
1da177e4
LT		 4128 uint32_t len;
4129 int status;
4130
9936781d
TM		 4131 /* Zero handle first to allow comparisons */
4132 memset(fh, 0, sizeof(*fh));
4133
1da177e4
LT		 4134 status = decode_op_hdr(xdr, OP_GETFH);
4135 if (status)
4136 return status;
1da177e4 4137
c0eae66e
BH		 4138 p = xdr_inline_decode(xdr, 4);
4139 if (unlikely(!p))
4140 goto out_overflow;
cccddf4f 4141 len = be32_to_cpup(p);
1da177e4
LT		 4142 if (len > NFS4_FHSIZE)
4143 return -EIO;
4144 fh->size = len;
c0eae66e
BH		 4145 p = xdr_inline_decode(xdr, len);
4146 if (unlikely(!p))
4147 goto out_overflow;
99398d06 4148 memcpy(fh->data, p, len);
1da177e4 4149 return 0;
c0eae66e
BH		 4150out_overflow:
4151 print_overflow_msg(__func__, xdr);
4152 return -EIO;
1da177e4
LT		 4153}
4154
4155static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4156{
4157 int status;
6c0195a4 4158
1da177e4
LT		 4159 status = decode_op_hdr(xdr, OP_LINK);
4160 if (status)
4161 return status;
4162 return decode_change_info(xdr, cinfo);
4163}
4164
4165/*
4166 * We create the owner, so we know a proper owner.id length is 4.
4167 */
911d1aaf 4168static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
1da177e4 4169{
911d1aaf 4170 uint64_t offset, length, clientid;
8687b63a 4171 __be32 *p;
911d1aaf 4172 uint32_t namelen, type;
1da177e4 4173
babddc72 4174 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
c0eae66e
BH		 4175 if (unlikely(!p))
4176 goto out_overflow;
babddc72 4177 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
3ceb4dbb 4178 p = xdr_decode_hyper(p, &length);
babddc72
BS		 4179 type = be32_to_cpup(p++); /* 4 byte read */
4180 if (fl != NULL) { /* manipulate file lock */
911d1aaf
TM		 4181 fl->fl_start = (loff_t)offset;
4182 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4183 if (length == ~(uint64_t)0)
4184 fl->fl_end = OFFSET_MAX;
4185 fl->fl_type = F_WRLCK;
4186 if (type & 1)
4187 fl->fl_type = F_RDLCK;
4188 fl->fl_pid = 0;
4189 }
babddc72
BS		 4190 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4191 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4192 p = xdr_inline_decode(xdr, namelen); /* variable size field */
c0eae66e
BH		 4193 if (likely(p))
4194 return -NFS4ERR_DENIED;
4195out_overflow:
4196 print_overflow_msg(__func__, xdr);
4197 return -EIO;
1da177e4
LT		 4198}
4199
911d1aaf 4200static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
1da177e4 4201{
1da177e4
LT		 4202 int status;
4203
4204 status = decode_op_hdr(xdr, OP_LOCK);
c1d51931
TM		 4205 if (status == -EIO)
4206 goto out;
1da177e4 4207 if (status == 0) {
07d30434
BH		 4208 status = decode_stateid(xdr, &res->stateid);
4209 if (unlikely(status))
4210 goto out;
1da177e4 4211 } else if (status == -NFS4ERR_DENIED)
c1d51931
TM		 4212 status = decode_lock_denied(xdr, NULL);
4213 if (res->open_seqid != NULL)
4214 nfs_increment_open_seqid(status, res->open_seqid);
4215 nfs_increment_lock_seqid(status, res->lock_seqid);
4216out:
1da177e4
LT		 4217 return status;
4218}
4219
911d1aaf 4220static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
1da177e4
LT		 4221{
4222 int status;
4223 status = decode_op_hdr(xdr, OP_LOCKT);
4224 if (status == -NFS4ERR_DENIED)
911d1aaf 4225 return decode_lock_denied(xdr, res->denied);
1da177e4
LT		 4226 return status;
4227}
4228
911d1aaf 4229static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
1da177e4 4230{
1da177e4
LT		 4231 int status;
4232
4233 status = decode_op_hdr(xdr, OP_LOCKU);
c1d51931
TM		 4234 if (status != -EIO)
4235 nfs_increment_lock_seqid(status, res->seqid);
07d30434
BH		 4236 if (status == 0)
4237 status = decode_stateid(xdr, &res->stateid);
1da177e4
LT		 4238 return status;
4239}
4240
d3c7b7cc
TM		 4241static int decode_release_lockowner(struct xdr_stream *xdr)
4242{
4243 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4244}
4245
1da177e4
LT		 4246static int decode_lookup(struct xdr_stream *xdr)
4247{
4248 return decode_op_hdr(xdr, OP_LOOKUP);
4249}
4250
4251/* This is too sick! */
4252static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4253{
05d564fe 4254 __be32 *p;
1da177e4
LT		 4255 uint32_t limit_type, nblocks, blocksize;
4256
c0eae66e
BH		 4257 p = xdr_inline_decode(xdr, 12);
4258 if (unlikely(!p))
4259 goto out_overflow;
6f723f77 4260 limit_type = be32_to_cpup(p++);
1da177e4 4261 switch (limit_type) {
05d564fe 4262 case 1:
cccddf4f 4263 xdr_decode_hyper(p, maxsize);
05d564fe
AA		 4264 break;
4265 case 2:
6f723f77 4266 nblocks = be32_to_cpup(p++);
cccddf4f 4267 blocksize = be32_to_cpup(p);
05d564fe 4268 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
1da177e4
LT		 4269 }
4270 return 0;
c0eae66e
BH		 4271out_overflow:
4272 print_overflow_msg(__func__, xdr);
4273 return -EIO;
1da177e4
LT		 4274}
4275
4276static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4277{
05d564fe
AA		 4278 __be32 *p;
4279 uint32_t delegation_type;
07d30434 4280 int status;
1da177e4 4281
c0eae66e
BH		 4282 p = xdr_inline_decode(xdr, 4);
4283 if (unlikely(!p))
4284 goto out_overflow;
cccddf4f 4285 delegation_type = be32_to_cpup(p);
1da177e4
LT		 4286 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4287 res->delegation_type = 0;
4288 return 0;
4289 }
07d30434
BH		 4290 status = decode_stateid(xdr, &res->delegation);
4291 if (unlikely(status))
4292 return status;
c0eae66e
BH		 4293 p = xdr_inline_decode(xdr, 4);
4294 if (unlikely(!p))
4295 goto out_overflow;
cccddf4f 4296 res->do_recall = be32_to_cpup(p);
05d564fe 4297
1da177e4 4298 switch (delegation_type) {
05d564fe
AA		 4299 case NFS4_OPEN_DELEGATE_READ:
4300 res->delegation_type = FMODE_READ;
4301 break;
4302 case NFS4_OPEN_DELEGATE_WRITE:
4303 res->delegation_type = FMODE_WRITE|FMODE_READ;
4304 if (decode_space_limit(xdr, &res->maxsize) < 0)
1da177e4
LT		 4305 return -EIO;
4306 }
7539bbab 4307 return decode_ace(xdr, NULL, res->server->nfs_client);
c0eae66e
BH		 4308out_overflow:
4309 print_overflow_msg(__func__, xdr);
4310 return -EIO;
1da177e4
LT		 4311}
4312
4313static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4314{
05d564fe 4315 __be32 *p;
aa53ed54 4316 uint32_t savewords, bmlen, i;
05d564fe 4317 int status;
1da177e4 4318
05d564fe 4319 status = decode_op_hdr(xdr, OP_OPEN);
c1d51931
TM		 4320 if (status != -EIO)
4321 nfs_increment_open_seqid(status, res->seqid);
07d30434
BH		 4322 if (!status)
4323 status = decode_stateid(xdr, &res->stateid);
4324 if (unlikely(status))
05d564fe 4325 return status;
1da177e4 4326
05d564fe 4327 decode_change_info(xdr, &res->cinfo);
1da177e4 4328
c0eae66e
BH		 4329 p = xdr_inline_decode(xdr, 8);
4330 if (unlikely(!p))
4331 goto out_overflow;
6f723f77 4332 res->rflags = be32_to_cpup(p++);
cccddf4f 4333 bmlen = be32_to_cpup(p);
05d564fe
AA		 4334 if (bmlen > 10)
4335 goto xdr_error;
1da177e4 4336
c0eae66e
BH		 4337 p = xdr_inline_decode(xdr, bmlen << 2);
4338 if (unlikely(!p))
4339 goto out_overflow;
aa53ed54
JL		 4340 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4341 for (i = 0; i < savewords; ++i)
6f723f77 4342 res->attrset[i] = be32_to_cpup(p++);
aa53ed54
JL		 4343 for (; i < NFS4_BITMAP_SIZE; i++)
4344 res->attrset[i] = 0;
4345
1da177e4
LT		 4346 return decode_delegation(xdr, res);
4347xdr_error:
3110ff80 4348 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
1da177e4 4349 return -EIO;
c0eae66e
BH		 4350out_overflow:
4351 print_overflow_msg(__func__, xdr);
4352 return -EIO;
1da177e4
LT		 4353}
4354
4355static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4356{
1da177e4
LT		 4357 int status;
4358
05d564fe 4359 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
c1d51931
TM		 4360 if (status != -EIO)
4361 nfs_increment_open_seqid(status, res->seqid);
07d30434
BH		 4362 if (!status)
4363 status = decode_stateid(xdr, &res->stateid);
4364 return status;
1da177e4
LT		 4365}
4366
4367static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4368{
1da177e4
LT		 4369 int status;
4370
4371 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
c1d51931
TM		 4372 if (status != -EIO)
4373 nfs_increment_open_seqid(status, res->seqid);
07d30434
BH		 4374 if (!status)
4375 status = decode_stateid(xdr, &res->stateid);
4376 return status;
1da177e4
LT		 4377}
4378
4379static int decode_putfh(struct xdr_stream *xdr)
4380{
4381 return decode_op_hdr(xdr, OP_PUTFH);
4382}
4383
4384static int decode_putrootfh(struct xdr_stream *xdr)
4385{
4386 return decode_op_hdr(xdr, OP_PUTROOTFH);
4387}
4388
4389static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4390{
4391 struct kvec *iov = req->rq_rcv_buf.head;
8687b63a 4392 __be32 *p;
1da177e4
LT		 4393 uint32_t count, eof, recvd, hdrlen;
4394 int status;
4395
4396 status = decode_op_hdr(xdr, OP_READ);
4397 if (status)
4398 return status;
c0eae66e
BH		 4399 p = xdr_inline_decode(xdr, 8);
4400 if (unlikely(!p))
4401 goto out_overflow;
6f723f77 4402 eof = be32_to_cpup(p++);
cccddf4f 4403 count = be32_to_cpup(p);
8111f373 4404 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
1da177e4
LT		 4405 recvd = req->rq_rcv_buf.len - hdrlen;
4406 if (count > recvd) {
fe82a183 4407 dprintk("NFS: server cheating in read reply: "
1da177e4
LT		 4408 "count %u > recvd %u\n", count, recvd);
4409 count = recvd;
4410 eof = 0;
4411 }
4412 xdr_read_pages(xdr, count);
4413 res->eof = eof;
4414 res->count = count;
4415 return 0;
c0eae66e
BH		 4416out_overflow:
4417 print_overflow_msg(__func__, xdr);
4418 return -EIO;
1da177e4
LT		 4419}
4420
4421static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4422{
4423 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
1da177e4 4424 struct kvec *iov = rcvbuf->head;
bcecff77
CL		 4425 size_t hdrlen;
4426 u32 recvd, pglen = rcvbuf->page_len;
bcecff77 4427 int status;
1da177e4
LT		 4428
4429 status = decode_op_hdr(xdr, OP_READDIR);
db942bbd
BH		 4430 if (!status)
4431 status = decode_verifier(xdr, readdir->verifier.data);
4432 if (unlikely(status))
1da177e4 4433 return status;
44109241
FI		 4434 dprintk("%s: verifier = %08x:%08x\n",
4435 __func__,
eadf4598
TM		 4436 ((u32 *)readdir->verifier.data)[0],
4437 ((u32 *)readdir->verifier.data)[1]);
4438
1da177e4 4439
db942bbd 4440 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
1da177e4
LT		 4441 recvd = rcvbuf->len - hdrlen;
4442 if (pglen > recvd)
4443 pglen = recvd;
4444 xdr_read_pages(xdr, pglen);
4445
afa8ccc9 4446
ac396128 4447 return pglen;
1da177e4
LT		 4448}
4449
4450static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4451{
4452 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4453 struct kvec *iov = rcvbuf->head;
bcecff77
CL		 4454 size_t hdrlen;
4455 u32 len, recvd;
8687b63a 4456 __be32 *p;
1da177e4
LT		 4457 int status;
4458
4459 status = decode_op_hdr(xdr, OP_READLINK);
4460 if (status)
4461 return status;
4462
4463 /* Convert length of symlink */
c0eae66e
BH		 4464 p = xdr_inline_decode(xdr, 4);
4465 if (unlikely(!p))
4466 goto out_overflow;
cccddf4f 4467 len = be32_to_cpup(p);
1da177e4 4468 if (len >= rcvbuf->page_len || len <= 0) {
fe82a183 4469 dprintk("nfs: server returned giant symlink!\n");
1da177e4
LT		 4470 return -ENAMETOOLONG;
4471 }
4472 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4473 recvd = req->rq_rcv_buf.len - hdrlen;
4474 if (recvd < len) {
fe82a183 4475 dprintk("NFS: server cheating in readlink reply: "
1da177e4
LT		 4476 "count %u > recvd %u\n", len, recvd);
4477 return -EIO;
4478 }
4479 xdr_read_pages(xdr, len);
4480 /*
4481 * The XDR encode routine has set things up so that
4482 * the link text will be copied directly into the
4483 * buffer. We just have to do overflow-checking,
4484 * and and null-terminate the text (the VFS expects
4485 * null-termination).
4486 */
b4687da7 4487 xdr_terminate_string(rcvbuf, len);
1da177e4 4488 return 0;
c0eae66e
BH		 4489out_overflow:
4490 print_overflow_msg(__func__, xdr);
4491 return -EIO;
1da177e4
LT		 4492}
4493
4494static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4495{
4496 int status;
4497
4498 status = decode_op_hdr(xdr, OP_REMOVE);
4499 if (status)
4500 goto out;
4501 status = decode_change_info(xdr, cinfo);
4502out:
4503 return status;
4504}
4505
4506static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4507 struct nfs4_change_info *new_cinfo)
4508{
4509 int status;
4510
4511 status = decode_op_hdr(xdr, OP_RENAME);
4512 if (status)
4513 goto out;
4514 if ((status = decode_change_info(xdr, old_cinfo)))
4515 goto out;
4516 status = decode_change_info(xdr, new_cinfo);
4517out:
4518 return status;
4519}
4520
4521static int decode_renew(struct xdr_stream *xdr)
4522{
4523 return decode_op_hdr(xdr, OP_RENEW);
4524}
4525
56ae19f3
TM		 4526static int
4527decode_restorefh(struct xdr_stream *xdr)
4528{
4529 return decode_op_hdr(xdr, OP_RESTOREFH);
4530}
4531
029d105e
BF		 4532static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4533 size_t *acl_len)
4534{
8687b63a 4535 __be32 *savep;
029d105e
BF		 4536 uint32_t attrlen,
4537 bitmap[2] = {0};
4538 struct kvec *iov = req->rq_rcv_buf.head;
4539 int status;
4540
4541 *acl_len = 0;
4542 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4543 goto out;
4544 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4545 goto out;
4546 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4547 goto out;
4548
4549 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4550 return -EIO;
4551 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
bcecff77
CL		 4552 size_t hdrlen;
4553 u32 recvd;
029d105e
BF		 4554
4555 /* We ignore &savep and don't do consistency checks on
4556 * the attr length. Let userspace figure it out.... */
4557 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4558 recvd = req->rq_rcv_buf.len - hdrlen;
4559 if (attrlen > recvd) {
fe82a183 4560 dprintk("NFS: server cheating in getattr"
029d105e
BF		 4561 " acl reply: attrlen %u > recvd %u\n",
4562 attrlen, recvd);
4563 return -EINVAL;
4564 }
c04871e6 4565 xdr_read_pages(xdr, attrlen);
029d105e 4566 *acl_len = attrlen;
8c233cf9
BF		 4567 } else
4568 status = -EOPNOTSUPP;
029d105e
BF		 4569
4570out:
4571 return status;
4572}
4573
1da177e4
LT		 4574static int
4575decode_savefh(struct xdr_stream *xdr)
4576{
4577 return decode_op_hdr(xdr, OP_SAVEFH);
4578}
4579
9e9ecc03 4580static int decode_setattr(struct xdr_stream *xdr)
1da177e4 4581{
8687b63a 4582 __be32 *p;
1da177e4
LT		 4583 uint32_t bmlen;
4584 int status;
4585
1da177e4
LT		 4586 status = decode_op_hdr(xdr, OP_SETATTR);
4587 if (status)
4588 return status;
c0eae66e
BH		 4589 p = xdr_inline_decode(xdr, 4);
4590 if (unlikely(!p))
4591 goto out_overflow;
cccddf4f 4592 bmlen = be32_to_cpup(p);
c0eae66e
BH		 4593 p = xdr_inline_decode(xdr, bmlen << 2);
4594 if (likely(p))
4595 return 0;
4596out_overflow:
4597 print_overflow_msg(__func__, xdr);
4598 return -EIO;
1da177e4
LT		 4599}
4600
bb8b27e5 4601static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
1da177e4 4602{
8687b63a 4603 __be32 *p;
1da177e4
LT		 4604 uint32_t opnum;
4605 int32_t nfserr;
4606
c0eae66e
BH		 4607 p = xdr_inline_decode(xdr, 8);
4608 if (unlikely(!p))
4609 goto out_overflow;
6f723f77 4610 opnum = be32_to_cpup(p++);
1da177e4 4611 if (opnum != OP_SETCLIENTID) {
fe82a183 4612 dprintk("nfs: decode_setclientid: Server returned operation"
6c0195a4 4613 " %d\n", opnum);
1da177e4
LT		 4614 return -EIO;
4615 }
cccddf4f 4616 nfserr = be32_to_cpup(p);
1da177e4 4617 if (nfserr == NFS_OK) {
c0eae66e
BH		 4618 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4619 if (unlikely(!p))
4620 goto out_overflow;
bb8b27e5
TM		 4621 p = xdr_decode_hyper(p, &res->clientid);
4622 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
1da177e4
LT		 4623 } else if (nfserr == NFSERR_CLID_INUSE) {
4624 uint32_t len;
4625
4626 /* skip netid string */
c0eae66e
BH		 4627 p = xdr_inline_decode(xdr, 4);
4628 if (unlikely(!p))
4629 goto out_overflow;
cccddf4f 4630 len = be32_to_cpup(p);
c0eae66e
BH		 4631 p = xdr_inline_decode(xdr, len);
4632 if (unlikely(!p))
4633 goto out_overflow;
1da177e4
LT		 4634
4635 /* skip uaddr string */
c0eae66e
BH		 4636 p = xdr_inline_decode(xdr, 4);
4637 if (unlikely(!p))
4638 goto out_overflow;
cccddf4f 4639 len = be32_to_cpup(p);
c0eae66e
BH		 4640 p = xdr_inline_decode(xdr, len);
4641 if (unlikely(!p))
4642 goto out_overflow;
1da177e4
LT		 4643 return -NFSERR_CLID_INUSE;
4644 } else
856dff3d 4645 return nfs4_stat_to_errno(nfserr);
1da177e4
LT		 4646
4647 return 0;
c0eae66e
BH		 4648out_overflow:
4649 print_overflow_msg(__func__, xdr);
4650 return -EIO;
1da177e4
LT		 4651}
4652
4653static int decode_setclientid_confirm(struct xdr_stream *xdr)
4654{
4655 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4656}
4657
4658static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4659{
8687b63a 4660 __be32 *p;
1da177e4
LT		 4661 int status;
4662
4663 status = decode_op_hdr(xdr, OP_WRITE);
4664 if (status)
4665 return status;
4666
c0eae66e
BH		 4667 p = xdr_inline_decode(xdr, 16);
4668 if (unlikely(!p))
4669 goto out_overflow;
6f723f77
BH		 4670 res->count = be32_to_cpup(p++);
4671 res->verf->committed = be32_to_cpup(p++);
99398d06 4672 memcpy(res->verf->verifier, p, 8);
1da177e4 4673 return 0;
c0eae66e
BH		 4674out_overflow:
4675 print_overflow_msg(__func__, xdr);
4676 return -EIO;
1da177e4
LT		 4677}
4678
4679static int decode_delegreturn(struct xdr_stream *xdr)
4680{
4681 return decode_op_hdr(xdr, OP_DELEGRETURN);
4682}
4683
99fe60d0
BH		 4684#if defined(CONFIG_NFS_V4_1)
4685static int decode_exchange_id(struct xdr_stream *xdr,
4686 struct nfs41_exchange_id_res *res)
4687{
4688 __be32 *p;
4689 uint32_t dummy;
2460ba57 4690 char *dummy_str;
99fe60d0
BH		 4691 int status;
4692 struct nfs_client *clp = res->client;
4693
4694 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4695 if (status)
4696 return status;
4697
c0eae66e
BH		 4698 p = xdr_inline_decode(xdr, 8);
4699 if (unlikely(!p))
4700 goto out_overflow;
114f64b5 4701 xdr_decode_hyper(p, &clp->cl_clientid);
c0eae66e
BH		 4702 p = xdr_inline_decode(xdr, 12);
4703 if (unlikely(!p))
4704 goto out_overflow;
6f723f77
BH		 4705 clp->cl_seqid = be32_to_cpup(p++);
4706 clp->cl_exchange_flags = be32_to_cpup(p++);
99fe60d0
BH		 4707
4708 /* We ask for SP4_NONE */
cccddf4f 4709 dummy = be32_to_cpup(p);
99fe60d0
BH		 4710 if (dummy != SP4_NONE)
4711 return -EIO;
4712
4713 /* Throw away minor_id */
c0eae66e
BH		 4714 p = xdr_inline_decode(xdr, 8);
4715 if (unlikely(!p))
4716 goto out_overflow;
99fe60d0
BH		 4717
4718 /* Throw away Major id */
2460ba57
BH		 4719 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4720 if (unlikely(status))
4721 return status;
99fe60d0
BH		 4722
4723 /* Throw away server_scope */
2460ba57
BH		 4724 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4725 if (unlikely(status))
4726 return status;
99fe60d0
BH		 4727
4728 /* Throw away Implementation id array */
2460ba57
BH		 4729 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4730 if (unlikely(status))
4731 return status;
99fe60d0
BH		 4732
4733 return 0;
c0eae66e
BH		 4734out_overflow:
4735 print_overflow_msg(__func__, xdr);
4736 return -EIO;
99fe60d0 4737}
fc931582
AA		 4738
4739static int decode_chan_attrs(struct xdr_stream *xdr,
4740 struct nfs4_channel_attrs *attrs)
4741{
4742 __be32 *p;
4743 u32 nr_attrs;
4744
c0eae66e
BH		 4745 p = xdr_inline_decode(xdr, 28);
4746 if (unlikely(!p))
4747 goto out_overflow;
6f723f77
BH		 4748 attrs->headerpadsz = be32_to_cpup(p++);
4749 attrs->max_rqst_sz = be32_to_cpup(p++);
4750 attrs->max_resp_sz = be32_to_cpup(p++);
4751 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4752 attrs->max_ops = be32_to_cpup(p++);
4753 attrs->max_reqs = be32_to_cpup(p++);
cccddf4f 4754 nr_attrs = be32_to_cpup(p);
fc931582
AA		 4755 if (unlikely(nr_attrs > 1)) {
4756 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4757 __func__, nr_attrs);
4758 return -EINVAL;
4759 }
c0eae66e
BH		 4760 if (nr_attrs == 1) {
4761 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
4762 if (unlikely(!p))
4763 goto out_overflow;
4764 }
fc931582 4765 return 0;
c0eae66e
BH		 4766out_overflow:
4767 print_overflow_msg(__func__, xdr);
4768 return -EIO;
fc931582
AA		 4769}
4770
e78291e4
BH		 4771static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
4772{
4773 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
fc931582
AA		 4774}
4775
4776static int decode_create_session(struct xdr_stream *xdr,
4777 struct nfs41_create_session_res *res)
4778{
4779 __be32 *p;
4780 int status;
4781 struct nfs_client *clp = res->client;
4782 struct nfs4_session *session = clp->cl_session;
4783
4784 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
e78291e4
BH		 4785 if (!status)
4786 status = decode_sessionid(xdr, &session->sess_id);
4787 if (unlikely(status))
fc931582
AA		 4788 return status;
4789
fc931582 4790 /* seqid, flags */
c0eae66e
BH		 4791 p = xdr_inline_decode(xdr, 8);
4792 if (unlikely(!p))
4793 goto out_overflow;
6f723f77 4794 clp->cl_seqid = be32_to_cpup(p++);
cccddf4f 4795 session->flags = be32_to_cpup(p);
fc931582
AA		 4796
4797 /* Channel attributes */
4798 status = decode_chan_attrs(xdr, &session->fc_attrs);
4799 if (!status)
4800 status = decode_chan_attrs(xdr, &session->bc_attrs);
4801 return status;
c0eae66e
BH		 4802out_overflow:
4803 print_overflow_msg(__func__, xdr);
4804 return -EIO;
fc931582 4805}
0f3e66c6
AA		 4806
4807static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4808{
4809 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4810}
18019753
RL		 4811
4812static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
4813{
4814 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
4815}
99fe60d0
BH		 4816#endif /* CONFIG_NFS_V4_1 */
4817
9b7b9fcc
AA		 4818static int decode_sequence(struct xdr_stream *xdr,
4819 struct nfs4_sequence_res *res,
4820 struct rpc_rqst *rqstp)
4821{
4822#if defined(CONFIG_NFS_V4_1)
fc01cea9
AA		 4823 struct nfs4_sessionid id;
4824 u32 dummy;
4825 int status;
4826 __be32 *p;
4827
9b7b9fcc
AA		 4828 if (!res->sr_session)
4829 return 0;
4830
fc01cea9 4831 status = decode_op_hdr(xdr, OP_SEQUENCE);
e78291e4
BH		 4832 if (!status)
4833 status = decode_sessionid(xdr, &id);
4834 if (unlikely(status))
fc01cea9 4835 goto out_err;
9b7b9fcc 4836
fc01cea9
AA		 4837 /*
4838 * If the server returns different values for sessionID, slotID or
4839 * sequence number, the server is looney tunes.
4840 */
fdcb4577 4841 status = -EREMOTEIO;
fc01cea9 4842
fc01cea9
AA		 4843 if (memcmp(id.data, res->sr_session->sess_id.data,
4844 NFS4_MAX_SESSIONID_LEN)) {
4845 dprintk("%s Invalid session id\n", __func__);
4846 goto out_err;
4847 }
e78291e4 4848
c0eae66e
BH		 4849 p = xdr_inline_decode(xdr, 20);
4850 if (unlikely(!p))
4851 goto out_overflow;
e78291e4 4852
fc01cea9 4853 /* seqid */
6f723f77 4854 dummy = be32_to_cpup(p++);
dfb4f309 4855 if (dummy != res->sr_slot->seq_nr) {
fc01cea9
AA		 4856 dprintk("%s Invalid sequence number\n", __func__);
4857 goto out_err;
4858 }
4859 /* slot id */
6f723f77 4860 dummy = be32_to_cpup(p++);
dfb4f309 4861 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
fc01cea9
AA		 4862 dprintk("%s Invalid slot id\n", __func__);
4863 goto out_err;
4864 }
4865 /* highest slot id - currently not processed */
6f723f77 4866 dummy = be32_to_cpup(p++);
fc01cea9 4867 /* target highest slot id - currently not processed */
6f723f77 4868 dummy = be32_to_cpup(p++);
0629e370
AB		 4869 /* result flags */
4870 res->sr_status_flags = be32_to_cpup(p);
fc01cea9
AA		 4871 status = 0;
4872out_err:
4873 res->sr_status = status;
4874 return status;
c0eae66e
BH		 4875out_overflow:
4876 print_overflow_msg(__func__, xdr);
4877 status = -EIO;
4878 goto out_err;
fc01cea9 4879#else /* CONFIG_NFS_V4_1 */
9b7b9fcc 4880 return 0;
fc01cea9 4881#endif /* CONFIG_NFS_V4_1 */
9b7b9fcc
AA		 4882}
4883
b1f69b75
AA		 4884#if defined(CONFIG_NFS_V4_1)
4885
4886static int decode_getdeviceinfo(struct xdr_stream *xdr,
4887 struct pnfs_device *pdev)
4888{
4889 __be32 *p;
4890 uint32_t len, type;
4891 int status;
4892
4893 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
4894 if (status) {
4895 if (status == -ETOOSMALL) {
4896 p = xdr_inline_decode(xdr, 4);
4897 if (unlikely(!p))
4898 goto out_overflow;
4899 pdev->mincount = be32_to_cpup(p);
4900 dprintk("%s: Min count too small. mincnt = %u\n",
4901 __func__, pdev->mincount);
4902 }
4903 return status;
4904 }
4905
4906 p = xdr_inline_decode(xdr, 8);
4907 if (unlikely(!p))
4908 goto out_overflow;
4909 type = be32_to_cpup(p++);
4910 if (type != pdev->layout_type) {
4911 dprintk("%s: layout mismatch req: %u pdev: %u\n",
4912 __func__, pdev->layout_type, type);
4913 return -EINVAL;
4914 }
4915 /*
4916 * Get the length of the opaque device_addr4. xdr_read_pages places
4917 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
4918 * and places the remaining xdr data in xdr_buf->tail
4919 */
4920 pdev->mincount = be32_to_cpup(p);
4921 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
4922
4923 /* Parse notification bitmap, verifying that it is zero. */
4924 p = xdr_inline_decode(xdr, 4);
4925 if (unlikely(!p))
4926 goto out_overflow;
4927 len = be32_to_cpup(p);
4928 if (len) {
ead00597 4929 uint32_t i;
b1f69b75
AA		 4930
4931 p = xdr_inline_decode(xdr, 4 * len);
4932 if (unlikely(!p))
4933 goto out_overflow;
4934 for (i = 0; i < len; i++, p++) {
4935 if (be32_to_cpup(p)) {
4936 dprintk("%s: notifications not supported\n",
4937 __func__);
4938 return -EIO;
4939 }
4940 }
4941 }
4942 return 0;
4943out_overflow:
4944 print_overflow_msg(__func__, xdr);
4945 return -EIO;
4946}
4947
4948static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
4949 struct nfs4_layoutget_res *res)
4950{
4951 __be32 *p;
4952 int status;
4953 u32 layout_count;
4954
4955 status = decode_op_hdr(xdr, OP_LAYOUTGET);
4956 if (status)
4957 return status;
4958 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
4959 if (unlikely(!p))
4960 goto out_overflow;
4961 res->return_on_close = be32_to_cpup(p++);
4962 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
4963 layout_count = be32_to_cpup(p);
4964 if (!layout_count) {
4965 dprintk("%s: server responded with empty layout array\n",
4966 __func__);
4967 return -EINVAL;
4968 }
4969
4970 p = xdr_inline_decode(xdr, 24);
4971 if (unlikely(!p))
4972 goto out_overflow;
4973 p = xdr_decode_hyper(p, &res->range.offset);
4974 p = xdr_decode_hyper(p, &res->range.length);
4975 res->range.iomode = be32_to_cpup(p++);
4976 res->type = be32_to_cpup(p++);
4977
4978 status = decode_opaque_inline(xdr, &res->layout.len, (char **)&p);
4979 if (unlikely(status))
4980 return status;
4981
4982 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
4983 __func__,
4984 (unsigned long)res->range.offset,
4985 (unsigned long)res->range.length,
4986 res->range.iomode,
4987 res->type,
4988 res->layout.len);
4989
4990 /* nfs4_proc_layoutget allocated a single page */
4991 if (res->layout.len > PAGE_SIZE)
4992 return -ENOMEM;
4993 memcpy(res->layout.buf, p, res->layout.len);
4994
4995 if (layout_count > 1) {
4996 /* We only handle a length one array at the moment. Any
4997 * further entries are just ignored. Note that this means
4998 * the client may see a response that is less than the
4999 * minimum it requested.
5000 */
5001 dprintk("%s: server responded with %d layouts, dropping tail\n",
5002 __func__, layout_count);
5003 }
5004
5005 return 0;
5006out_overflow:
5007 print_overflow_msg(__func__, xdr);
5008 return -EIO;
5009}
5010#endif /* CONFIG_NFS_V4_1 */
5011
49c2559e
BH		 5012/*
5013 * END OF "GENERIC" DECODE ROUTINES.
5014 */
5015
1da177e4
LT		 5016/*
5017 * Decode OPEN_DOWNGRADE response
5018 */
bf269551
CL		 5019static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5020 struct xdr_stream *xdr,
5021 struct nfs_closeres *res)
1da177e4 5022{
05d564fe
AA		 5023 struct compound_hdr hdr;
5024 int status;
5025
bf269551 5026 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5027 if (status)
5028 goto out;
bf269551 5029 status = decode_sequence(xdr, &res->seq_res, rqstp);
05d564fe
AA		 5030 if (status)
5031 goto out;
bf269551 5032 status = decode_putfh(xdr);
05d564fe
AA		 5033 if (status)
5034 goto out;
bf269551 5035 status = decode_open_downgrade(xdr, res);
516a6af6
TM		 5036 if (status != 0)
5037 goto out;
bf269551 5038 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5039 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4 5040out:
05d564fe 5041 return status;
1da177e4
LT		 5042}
5043
1da177e4
LT		 5044/*
5045 * Decode ACCESS response
5046 */
bf269551
CL		 5047static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5048 struct nfs4_accessres *res)
1da177e4 5049{
1da177e4
LT		 5050 struct compound_hdr hdr;
5051 int status;
6c0195a4 5052
bf269551 5053 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5054 if (status)
5055 goto out;
bf269551 5056 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5057 if (status)
1da177e4 5058 goto out;
bf269551 5059 status = decode_putfh(xdr);
76b32999
TM		 5060 if (status != 0)
5061 goto out;
bf269551 5062 status = decode_access(xdr, res);
76b32999
TM		 5063 if (status != 0)
5064 goto out;
bf269551 5065 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5066 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5067out:
5068 return status;
5069}
5070
5071/*
5072 * Decode LOOKUP response
5073 */
bf269551
CL		 5074static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5075 struct nfs4_lookup_res *res)
1da177e4 5076{
1da177e4
LT		 5077 struct compound_hdr hdr;
5078 int status;
6c0195a4 5079
bf269551 5080 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5081 if (status)
5082 goto out;
bf269551 5083 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5084 if (status)
1da177e4 5085 goto out;
bf269551
CL		 5086 status = decode_putfh(xdr);
5087 if (status)
1da177e4 5088 goto out;
bf269551
CL		 5089 status = decode_lookup(xdr);
5090 if (status)
1da177e4 5091 goto out;
bf269551
CL		 5092 status = decode_getfh(xdr, res->fh);
5093 if (status)
1da177e4 5094 goto out;
bf269551 5095 status = decode_getfattr(xdr, res->fattr, res->server
80e52ace 5096 ,!RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5097out:
5098 return status;
5099}
5100
5101/*
5102 * Decode LOOKUP_ROOT response
5103 */
bf269551
CL		 5104static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5105 struct xdr_stream *xdr,
5106 struct nfs4_lookup_res *res)
1da177e4 5107{
1da177e4
LT		 5108 struct compound_hdr hdr;
5109 int status;
6c0195a4 5110
bf269551 5111 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5112 if (status)
5113 goto out;
bf269551 5114 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5115 if (status)
1da177e4 5116 goto out;
bf269551
CL		 5117 status = decode_putrootfh(xdr);
5118 if (status)
1da177e4 5119 goto out;
bf269551
CL		 5120 status = decode_getfh(xdr, res->fh);
5121 if (status == 0)
5122 status = decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5123 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5124out:
5125 return status;
5126}
5127
5128/*
5129 * Decode REMOVE response
5130 */
bf269551
CL		 5131static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5132 struct nfs_removeres *res)
1da177e4 5133{
1da177e4
LT		 5134 struct compound_hdr hdr;
5135 int status;
6c0195a4 5136
bf269551 5137 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5138 if (status)
5139 goto out;
bf269551 5140 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5141 if (status)
1da177e4 5142 goto out;
bf269551
CL		 5143 status = decode_putfh(xdr);
5144 if (status)
16e42959 5145 goto out;
bf269551
CL		 5146 status = decode_remove(xdr, &res->cinfo);
5147 if (status)
16e42959 5148 goto out;
bf269551 5149 decode_getfattr(xdr, res->dir_attr, res->server,
80e52ace 5150 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5151out:
5152 return status;
5153}
5154
5155/*
5156 * Decode RENAME response
5157 */
bf269551
CL		 5158static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5159 struct nfs_renameres *res)
1da177e4 5160{
1da177e4
LT		 5161 struct compound_hdr hdr;
5162 int status;
6c0195a4 5163
bf269551 5164 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5165 if (status)
5166 goto out;
bf269551 5167 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5168 if (status)
1da177e4 5169 goto out;
bf269551
CL		 5170 status = decode_putfh(xdr);
5171 if (status)
1da177e4 5172 goto out;
bf269551
CL		 5173 status = decode_savefh(xdr);
5174 if (status)
1da177e4 5175 goto out;
bf269551
CL		 5176 status = decode_putfh(xdr);
5177 if (status)
1da177e4 5178 goto out;
bf269551
CL		 5179 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5180 if (status)
6caf2c82
TM		 5181 goto out;
5182 /* Current FH is target directory */
bf269551 5183 if (decode_getfattr(xdr, res->new_fattr, res->server,
80e52ace 5184 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
6caf2c82 5185 goto out;
bf269551
CL		 5186 status = decode_restorefh(xdr);
5187 if (status)
6caf2c82 5188 goto out;
bf269551 5189 decode_getfattr(xdr, res->old_fattr, res->server,
80e52ace 5190 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5191out:
5192 return status;
5193}
5194
5195/*
5196 * Decode LINK response
5197 */
bf269551
CL		 5198static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5199 struct nfs4_link_res *res)
1da177e4 5200{
1da177e4
LT		 5201 struct compound_hdr hdr;
5202 int status;
6c0195a4 5203
bf269551 5204 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5205 if (status)
5206 goto out;
bf269551 5207 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5208 if (status)
1da177e4 5209 goto out;
bf269551
CL		 5210 status = decode_putfh(xdr);
5211 if (status)
1da177e4 5212 goto out;
bf269551
CL		 5213 status = decode_savefh(xdr);
5214 if (status)
1da177e4 5215 goto out;
bf269551
CL		 5216 status = decode_putfh(xdr);
5217 if (status)
1da177e4 5218 goto out;
bf269551
CL		 5219 status = decode_link(xdr, &res->cinfo);
5220 if (status)
91ba2eee
TM		 5221 goto out;
5222 /*
5223 * Note order: OP_LINK leaves the directory as the current
5224 * filehandle.
5225 */
bf269551 5226 if (decode_getfattr(xdr, res->dir_attr, res->server,
80e52ace 5227 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
91ba2eee 5228 goto out;
bf269551
CL		 5229 status = decode_restorefh(xdr);
5230 if (status)
91ba2eee 5231 goto out;
bf269551 5232 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5233 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5234out:
5235 return status;
5236}
5237
5238/*
5239 * Decode CREATE response
5240 */
bf269551
CL		 5241static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5242 struct nfs4_create_res *res)
1da177e4 5243{
1da177e4
LT		 5244 struct compound_hdr hdr;
5245 int status;
6c0195a4 5246
bf269551 5247 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5248 if (status)
5249 goto out;
bf269551 5250 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5251 if (status)
1da177e4 5252 goto out;
bf269551
CL		 5253 status = decode_putfh(xdr);
5254 if (status)
1da177e4 5255 goto out;
bf269551
CL		 5256 status = decode_savefh(xdr);
5257 if (status)
56ae19f3 5258 goto out;
bf269551
CL		 5259 status = decode_create(xdr, &res->dir_cinfo);
5260 if (status)
1da177e4 5261 goto out;
bf269551
CL		 5262 status = decode_getfh(xdr, res->fh);
5263 if (status)
1da177e4 5264 goto out;
bf269551 5265 if (decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5266 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
56ae19f3 5267 goto out;
bf269551
CL		 5268 status = decode_restorefh(xdr);
5269 if (status)
56ae19f3 5270 goto out;
bf269551 5271 decode_getfattr(xdr, res->dir_fattr, res->server,
80e52ace 5272 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5273out:
5274 return status;
5275}
5276
5277/*
5278 * Decode SYMLINK response
5279 */
bf269551
CL		 5280static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5281 struct nfs4_create_res *res)
1da177e4 5282{
bf269551 5283 return nfs4_xdr_dec_create(rqstp, xdr, res);
1da177e4
LT		 5284}
5285
5286/*
5287 * Decode GETATTR response
5288 */
bf269551
CL		 5289static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5290 struct nfs4_getattr_res *res)
1da177e4 5291{
1da177e4
LT		 5292 struct compound_hdr hdr;
5293 int status;
6c0195a4 5294
bf269551 5295 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5296 if (status)
5297 goto out;
bf269551 5298 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5299 if (status)
5300 goto out;
bf269551 5301 status = decode_putfh(xdr);
1da177e4
LT		 5302 if (status)
5303 goto out;
bf269551 5304 status = decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5305 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5306out:
5307 return status;
1da177e4
LT		 5308}
5309
23ec6965
BF		 5310/*
5311 * Encode an SETACL request
5312 */
9f06c719
CL		 5313static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5314 struct nfs_setaclargs *args)
23ec6965 5315{
05d564fe 5316 struct compound_hdr hdr = {
66cc0429 5317 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
05d564fe 5318 };
05d564fe 5319
9f06c719
CL		 5320 encode_compound_hdr(xdr, req, &hdr);
5321 encode_sequence(xdr, &args->seq_args, &hdr);
5322 encode_putfh(xdr, args->fh, &hdr);
5323 encode_setacl(xdr, args, &hdr);
d017931c 5324 encode_nops(&hdr);
23ec6965 5325}
05d564fe 5326
23ec6965
BF		 5327/*
5328 * Decode SETACL response
5329 */
5330static int
bf269551 5331nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
73c403a9 5332 struct nfs_setaclres *res)
23ec6965 5333{
23ec6965
BF		 5334 struct compound_hdr hdr;
5335 int status;
5336
bf269551 5337 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5338 if (status)
5339 goto out;
bf269551 5340 status = decode_sequence(xdr, &res->seq_res, rqstp);
23ec6965
BF		 5341 if (status)
5342 goto out;
bf269551 5343 status = decode_putfh(xdr);
23ec6965
BF		 5344 if (status)
5345 goto out;
bf269551 5346 status = decode_setattr(xdr);
23ec6965
BF		 5347out:
5348 return status;
5349}
1da177e4 5350
029d105e
BF		 5351/*
5352 * Decode GETACL response
5353 */
5354static int
bf269551 5355nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
663c79b3 5356 struct nfs_getaclres *res)
029d105e 5357{
029d105e
BF		 5358 struct compound_hdr hdr;
5359 int status;
5360
bf269551 5361 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5362 if (status)
5363 goto out;
bf269551 5364 status = decode_sequence(xdr, &res->seq_res, rqstp);
029d105e
BF		 5365 if (status)
5366 goto out;
bf269551 5367 status = decode_putfh(xdr);
029d105e
BF		 5368 if (status)
5369 goto out;
bf269551 5370 status = decode_getacl(xdr, rqstp, &res->acl_len);
029d105e
BF		 5371
5372out:
5373 return status;
5374}
5375
1da177e4
LT		 5376/*
5377 * Decode CLOSE response
5378 */
bf269551
CL		 5379static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5380 struct nfs_closeres *res)
1da177e4 5381{
05d564fe
AA		 5382 struct compound_hdr hdr;
5383 int status;
5384
bf269551 5385 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5386 if (status)
5387 goto out;
bf269551 5388 status = decode_sequence(xdr, &res->seq_res, rqstp);
05d564fe
AA		 5389 if (status)
5390 goto out;
bf269551 5391 status = decode_putfh(xdr);
05d564fe
AA		 5392 if (status)
5393 goto out;
bf269551 5394 status = decode_close(xdr, res);
516a6af6
TM		 5395 if (status != 0)
5396 goto out;
5397 /*
5398 * Note: Server may do delete on close for this file
5399 * in which case the getattr call will fail with
5400 * an ESTALE error. Shouldn't be a problem,
5401 * though, since fattr->valid will remain unset.
5402 */
bf269551 5403 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5404 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4 5405out:
05d564fe 5406 return status;
1da177e4
LT		 5407}
5408
5409/*
5410 * Decode OPEN response
5411 */
bf269551
CL		 5412static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5413 struct nfs_openres *res)
1da177e4 5414{
05d564fe
AA		 5415 struct compound_hdr hdr;
5416 int status;
5417
bf269551 5418 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5419 if (status)
5420 goto out;
bf269551 5421 status = decode_sequence(xdr, &res->seq_res, rqstp);
05d564fe
AA		 5422 if (status)
5423 goto out;
bf269551 5424 status = decode_putfh(xdr);
05d564fe
AA		 5425 if (status)
5426 goto out;
bf269551 5427 status = decode_savefh(xdr);
05d564fe
AA		 5428 if (status)
5429 goto out;
bf269551 5430 status = decode_open(xdr, res);
56ae19f3
TM		 5431 if (status)
5432 goto out;
bf269551 5433 if (decode_getfh(xdr, &res->fh) != 0)
1da177e4 5434 goto out;
bf269551 5435 if (decode_getfattr(xdr, res->f_attr, res->server,
80e52ace 5436 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
56ae19f3 5437 goto out;
bf269551 5438 if (decode_restorefh(xdr) != 0)
56ae19f3 5439 goto out;
bf269551 5440 decode_getfattr(xdr, res->dir_attr, res->server,
80e52ace 5441 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4 5442out:
05d564fe 5443 return status;
1da177e4
LT		 5444}
5445
5446/*
5447 * Decode OPEN_CONFIRM response
5448 */
bf269551
CL		 5449static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
5450 struct xdr_stream *xdr,
5451 struct nfs_open_confirmres *res)
1da177e4 5452{
05d564fe
AA		 5453 struct compound_hdr hdr;
5454 int status;
5455
bf269551 5456 status = decode_compound_hdr(xdr, &hdr);
05d564fe
AA		 5457 if (status)
5458 goto out;
bf269551 5459 status = decode_putfh(xdr);
05d564fe
AA		 5460 if (status)
5461 goto out;
bf269551 5462 status = decode_open_confirm(xdr, res);
1da177e4 5463out:
05d564fe 5464 return status;
1da177e4
LT		 5465}
5466
5467/*
5468 * Decode OPEN response
5469 */
bf269551
CL		 5470static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
5471 struct xdr_stream *xdr,
5472 struct nfs_openres *res)
1da177e4 5473{
05d564fe
AA		 5474 struct compound_hdr hdr;
5475 int status;
5476
bf269551 5477 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5478 if (status)
5479 goto out;
bf269551 5480 status = decode_sequence(xdr, &res->seq_res, rqstp);
05d564fe
AA		 5481 if (status)
5482 goto out;
bf269551 5483 status = decode_putfh(xdr);
05d564fe
AA		 5484 if (status)
5485 goto out;
bf269551 5486 status = decode_open(xdr, res);
05d564fe
AA		 5487 if (status)
5488 goto out;
bf269551 5489 decode_getfattr(xdr, res->f_attr, res->server,
80e52ace 5490 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4 5491out:
05d564fe 5492 return status;
1da177e4
LT		 5493}
5494
5495/*
5496 * Decode SETATTR response
5497 */
bf269551
CL		 5498static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
5499 struct xdr_stream *xdr,
5500 struct nfs_setattrres *res)
1da177e4 5501{
05d564fe
AA		 5502 struct compound_hdr hdr;
5503 int status;
5504
bf269551 5505 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5506 if (status)
5507 goto out;
bf269551 5508 status = decode_sequence(xdr, &res->seq_res, rqstp);
05d564fe
AA		 5509 if (status)
5510 goto out;
bf269551 5511 status = decode_putfh(xdr);
05d564fe
AA		 5512 if (status)
5513 goto out;
bf269551 5514 status = decode_setattr(xdr);
05d564fe
AA		 5515 if (status)
5516 goto out;
bf269551 5517 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5518 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4 5519out:
05d564fe 5520 return status;
1da177e4
LT		 5521}
5522
5523/*
5524 * Decode LOCK response
5525 */
bf269551
CL		 5526static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5527 struct nfs_lock_res *res)
1da177e4 5528{
1da177e4
LT		 5529 struct compound_hdr hdr;
5530 int status;
5531
bf269551 5532 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5533 if (status)
5534 goto out;
bf269551 5535 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5536 if (status)
5537 goto out;
bf269551 5538 status = decode_putfh(xdr);
1da177e4
LT		 5539 if (status)
5540 goto out;
bf269551 5541 status = decode_lock(xdr, res);
1da177e4
LT		 5542out:
5543 return status;
5544}
5545
5546/*
5547 * Decode LOCKT response
5548 */
bf269551
CL		 5549static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5550 struct nfs_lockt_res *res)
1da177e4 5551{
1da177e4
LT		 5552 struct compound_hdr hdr;
5553 int status;
5554
bf269551 5555 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5556 if (status)
5557 goto out;
bf269551 5558 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5559 if (status)
5560 goto out;
bf269551 5561 status = decode_putfh(xdr);
1da177e4
LT		 5562 if (status)
5563 goto out;
bf269551 5564 status = decode_lockt(xdr, res);
1da177e4
LT		 5565out:
5566 return status;
5567}
5568
5569/*
5570 * Decode LOCKU response
5571 */
bf269551
CL		 5572static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5573 struct nfs_locku_res *res)
1da177e4 5574{
1da177e4
LT		 5575 struct compound_hdr hdr;
5576 int status;
5577
bf269551 5578 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5579 if (status)
5580 goto out;
bf269551 5581 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5582 if (status)
5583 goto out;
bf269551 5584 status = decode_putfh(xdr);
1da177e4
LT		 5585 if (status)
5586 goto out;
bf269551 5587 status = decode_locku(xdr, res);
1da177e4
LT		 5588out:
5589 return status;
5590}
5591
bf269551
CL		 5592static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
5593 struct xdr_stream *xdr, void *dummy)
d3c7b7cc 5594{
d3c7b7cc
TM		 5595 struct compound_hdr hdr;
5596 int status;
5597
bf269551 5598 status = decode_compound_hdr(xdr, &hdr);
d3c7b7cc 5599 if (!status)
bf269551 5600 status = decode_release_lockowner(xdr);
d3c7b7cc
TM		 5601 return status;
5602}
5603
1da177e4
LT		 5604/*
5605 * Decode READLINK response
5606 */
bf269551
CL		 5607static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
5608 struct xdr_stream *xdr,
f50c7000 5609 struct nfs4_readlink_res *res)
1da177e4 5610{
1da177e4
LT		 5611 struct compound_hdr hdr;
5612 int status;
5613
bf269551 5614 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5615 if (status)
5616 goto out;
bf269551 5617 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5618 if (status)
5619 goto out;
bf269551 5620 status = decode_putfh(xdr);
1da177e4
LT		 5621 if (status)
5622 goto out;
bf269551 5623 status = decode_readlink(xdr, rqstp);
1da177e4
LT		 5624out:
5625 return status;
5626}
5627
5628/*
5629 * Decode READDIR response
5630 */
bf269551
CL		 5631static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5632 struct nfs4_readdir_res *res)
1da177e4 5633{
1da177e4
LT		 5634 struct compound_hdr hdr;
5635 int status;
5636
bf269551 5637 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5638 if (status)
5639 goto out;
bf269551 5640 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5641 if (status)
5642 goto out;
bf269551 5643 status = decode_putfh(xdr);
1da177e4
LT		 5644 if (status)
5645 goto out;
bf269551 5646 status = decode_readdir(xdr, rqstp, res);
1da177e4
LT		 5647out:
5648 return status;
5649}
5650
5651/*
5652 * Decode Read response
5653 */
bf269551
CL		 5654static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5655 struct nfs_readres *res)
1da177e4 5656{
1da177e4
LT		 5657 struct compound_hdr hdr;
5658 int status;
5659
bf269551 5660 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5661 if (status)
5662 goto out;
bf269551 5663 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5664 if (status)
5665 goto out;
bf269551 5666 status = decode_putfh(xdr);
1da177e4
LT		 5667 if (status)
5668 goto out;
bf269551 5669 status = decode_read(xdr, rqstp, res);
1da177e4
LT		 5670 if (!status)
5671 status = res->count;
5672out:
5673 return status;
5674}
5675
5676/*
5677 * Decode WRITE response
5678 */
bf269551
CL		 5679static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5680 struct nfs_writeres *res)
1da177e4 5681{
1da177e4
LT		 5682 struct compound_hdr hdr;
5683 int status;
5684
bf269551 5685 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5686 if (status)
5687 goto out;
bf269551 5688 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5689 if (status)
5690 goto out;
bf269551 5691 status = decode_putfh(xdr);
1da177e4
LT		 5692 if (status)
5693 goto out;
bf269551 5694 status = decode_write(xdr, res);
4f9838c7
TM		 5695 if (status)
5696 goto out;
bf269551 5697 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5698 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5699 if (!status)
5700 status = res->count;
5701out:
5702 return status;
5703}
5704
5705/*
5706 * Decode COMMIT response
5707 */
bf269551
CL		 5708static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5709 struct nfs_writeres *res)
1da177e4 5710{
1da177e4
LT		 5711 struct compound_hdr hdr;
5712 int status;
5713
bf269551 5714 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5715 if (status)
5716 goto out;
bf269551 5717 status = decode_sequence(xdr, &res->seq_res, rqstp);
1da177e4
LT		 5718 if (status)
5719 goto out;
bf269551 5720 status = decode_putfh(xdr);
1da177e4
LT		 5721 if (status)
5722 goto out;
bf269551 5723 status = decode_commit(xdr, res);
4f9838c7
TM		 5724 if (status)
5725 goto out;
bf269551 5726 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5727 !RPC_IS_ASYNC(rqstp->rq_task));
1da177e4
LT		 5728out:
5729 return status;
5730}
5731
5732/*
8b173218 5733 * Decode FSINFO response
1da177e4 5734 */
bf269551 5735static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
3dda5e43 5736 struct nfs4_fsinfo_res *res)
1da177e4 5737{
1da177e4
LT		 5738 struct compound_hdr hdr;
5739 int status;
5740
bf269551 5741 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc 5742 if (!status)
bf269551 5743 status = decode_sequence(xdr, &res->seq_res, req);
1da177e4 5744 if (!status)
bf269551 5745 status = decode_putfh(xdr);
1da177e4 5746 if (!status)
bf269551 5747 status = decode_fsinfo(xdr, res->fsinfo);
1da177e4
LT		 5748 return status;
5749}
5750
5751/*
8b173218 5752 * Decode PATHCONF response
1da177e4 5753 */
bf269551 5754static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
d45b2989 5755 struct nfs4_pathconf_res *res)
1da177e4 5756{
1da177e4
LT		 5757 struct compound_hdr hdr;
5758 int status;
5759
bf269551 5760 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc 5761 if (!status)
bf269551 5762 status = decode_sequence(xdr, &res->seq_res, req);
1da177e4 5763 if (!status)
bf269551 5764 status = decode_putfh(xdr);
1da177e4 5765 if (!status)
bf269551 5766 status = decode_pathconf(xdr, res->pathconf);
1da177e4
LT		 5767 return status;
5768}
5769
5770/*
8b173218 5771 * Decode STATFS response
1da177e4 5772 */
bf269551 5773static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
24ad148a 5774 struct nfs4_statfs_res *res)
1da177e4 5775{
1da177e4
LT		 5776 struct compound_hdr hdr;
5777 int status;
5778
bf269551 5779 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc 5780 if (!status)
bf269551 5781 status = decode_sequence(xdr, &res->seq_res, req);
1da177e4 5782 if (!status)
bf269551 5783 status = decode_putfh(xdr);
1da177e4 5784 if (!status)
bf269551 5785 status = decode_statfs(xdr, res->fsstat);
1da177e4
LT		 5786 return status;
5787}
5788
5789/*
8b173218 5790 * Decode GETATTR_BITMAP response
1da177e4 5791 */
bf269551
CL		 5792static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
5793 struct xdr_stream *xdr,
5794 struct nfs4_server_caps_res *res)
1da177e4 5795{
1da177e4
LT		 5796 struct compound_hdr hdr;
5797 int status;
5798
bf269551 5799 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5800 if (status)
5801 goto out;
bf269551 5802 status = decode_sequence(xdr, &res->seq_res, req);
9b7b9fcc 5803 if (status)
1da177e4 5804 goto out;
bf269551
CL		 5805 status = decode_putfh(xdr);
5806 if (status)
1da177e4 5807 goto out;
bf269551 5808 status = decode_server_caps(xdr, res);
1da177e4
LT		 5809out:
5810 return status;
5811}
5812
5813/*
5814 * Decode RENEW response
5815 */
bf269551
CL		 5816static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5817 void *__unused)
1da177e4 5818{
1da177e4
LT		 5819 struct compound_hdr hdr;
5820 int status;
5821
bf269551 5822 status = decode_compound_hdr(xdr, &hdr);
1da177e4 5823 if (!status)
bf269551 5824 status = decode_renew(xdr);
1da177e4
LT		 5825 return status;
5826}
5827
5828/*
8b173218 5829 * Decode SETCLIENTID response
1da177e4 5830 */
bf269551
CL		 5831static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
5832 struct xdr_stream *xdr,
5833 struct nfs4_setclientid_res *res)
1da177e4 5834{
1da177e4
LT		 5835 struct compound_hdr hdr;
5836 int status;
5837
bf269551 5838 status = decode_compound_hdr(xdr, &hdr);
1da177e4 5839 if (!status)
bf269551 5840 status = decode_setclientid(xdr, res);
1da177e4
LT		 5841 return status;
5842}
5843
5844/*
8b173218 5845 * Decode SETCLIENTID_CONFIRM response
1da177e4 5846 */
bf269551
CL		 5847static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
5848 struct xdr_stream *xdr,
5849 struct nfs_fsinfo *fsinfo)
1da177e4 5850{
1da177e4
LT		 5851 struct compound_hdr hdr;
5852 int status;
5853
bf269551 5854 status = decode_compound_hdr(xdr, &hdr);
1da177e4 5855 if (!status)
bf269551 5856 status = decode_setclientid_confirm(xdr);
1da177e4 5857 if (!status)
bf269551 5858 status = decode_putrootfh(xdr);
1da177e4 5859 if (!status)
bf269551 5860 status = decode_fsinfo(xdr, fsinfo);
1da177e4
LT		 5861 return status;
5862}
5863
5864/*
8b173218 5865 * Decode DELEGRETURN response
1da177e4 5866 */
bf269551
CL		 5867static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
5868 struct xdr_stream *xdr,
5869 struct nfs4_delegreturnres *res)
1da177e4 5870{
1da177e4
LT		 5871 struct compound_hdr hdr;
5872 int status;
5873
bf269551 5874 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5875 if (status)
5876 goto out;
bf269551 5877 status = decode_sequence(xdr, &res->seq_res, rqstp);
9b7b9fcc 5878 if (status)
fa178f29 5879 goto out;
bf269551 5880 status = decode_putfh(xdr);
fa178f29
TM		 5881 if (status != 0)
5882 goto out;
bf269551 5883 status = decode_delegreturn(xdr);
556ae3bb
JL		 5884 if (status != 0)
5885 goto out;
bf269551 5886 decode_getfattr(xdr, res->fattr, res->server,
80e52ace 5887 !RPC_IS_ASYNC(rqstp->rq_task));
fa178f29 5888out:
1da177e4
LT		 5889 return status;
5890}
5891
683b57b4 5892/*
8b173218 5893 * Decode FS_LOCATIONS response
683b57b4 5894 */
bf269551
CL		 5895static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
5896 struct xdr_stream *xdr,
22958463 5897 struct nfs4_fs_locations_res *res)
683b57b4 5898{
683b57b4
TM		 5899 struct compound_hdr hdr;
5900 int status;
5901
bf269551 5902 status = decode_compound_hdr(xdr, &hdr);
9b7b9fcc
AA		 5903 if (status)
5904 goto out;
bf269551 5905 status = decode_sequence(xdr, &res->seq_res, req);
9b7b9fcc 5906 if (status)
683b57b4 5907 goto out;
bf269551
CL		 5908 status = decode_putfh(xdr);
5909 if (status)
683b57b4 5910 goto out;
bf269551
CL		 5911 status = decode_lookup(xdr);
5912 if (status)
683b57b4 5913 goto out;
bf269551
CL		 5914 xdr_enter_page(xdr, PAGE_SIZE);
5915 status = decode_getfattr(xdr, &res->fs_locations->fattr,
80e52ace
TM		 5916 res->fs_locations->server,
5917 !RPC_IS_ASYNC(req->rq_task));
683b57b4
TM		 5918out:
5919 return status;
5920}
5921
99fe60d0
BH		 5922#if defined(CONFIG_NFS_V4_1)
5923/*
8b173218 5924 * Decode EXCHANGE_ID response
99fe60d0 5925 */
bf269551
CL		 5926static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
5927 struct xdr_stream *xdr,
99fe60d0
BH		 5928 void *res)
5929{
99fe60d0
BH		 5930 struct compound_hdr hdr;
5931 int status;
5932
bf269551 5933 status = decode_compound_hdr(xdr, &hdr);
99fe60d0 5934 if (!status)
bf269551 5935 status = decode_exchange_id(xdr, res);
99fe60d0
BH		 5936 return status;
5937}
2050f0cc 5938
fc931582 5939/*
8b173218 5940 * Decode CREATE_SESSION response
fc931582 5941 */
bf269551
CL		 5942static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
5943 struct xdr_stream *xdr,
fc931582
AA		 5944 struct nfs41_create_session_res *res)
5945{
fc931582
AA		 5946 struct compound_hdr hdr;
5947 int status;
5948
bf269551 5949 status = decode_compound_hdr(xdr, &hdr);
fc931582 5950 if (!status)
bf269551 5951 status = decode_create_session(xdr, res);
fc931582
AA		 5952 return status;
5953}
5954
0f3e66c6 5955/*
8b173218 5956 * Decode DESTROY_SESSION response
0f3e66c6 5957 */
bf269551
CL		 5958static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
5959 struct xdr_stream *xdr,
5960 void *res)
0f3e66c6 5961{
0f3e66c6
AA		 5962 struct compound_hdr hdr;
5963 int status;
5964
bf269551 5965 status = decode_compound_hdr(xdr, &hdr);
0f3e66c6 5966 if (!status)
bf269551 5967 status = decode_destroy_session(xdr, res);
0f3e66c6
AA		 5968 return status;
5969}
5970
fc01cea9 5971/*
8b173218 5972 * Decode SEQUENCE response
fc01cea9 5973 */
bf269551
CL		 5974static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
5975 struct xdr_stream *xdr,
fc01cea9
AA		 5976 struct nfs4_sequence_res *res)
5977{
fc01cea9
AA		 5978 struct compound_hdr hdr;
5979 int status;
5980
bf269551 5981 status = decode_compound_hdr(xdr, &hdr);
fc01cea9 5982 if (!status)
bf269551 5983 status = decode_sequence(xdr, res, rqstp);
fc01cea9
AA		 5984 return status;
5985}
5986
2050f0cc 5987/*
8b173218 5988 * Decode GET_LEASE_TIME response
2050f0cc 5989 */
bf269551
CL		 5990static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
5991 struct xdr_stream *xdr,
2050f0cc
AA		 5992 struct nfs4_get_lease_time_res *res)
5993{
2050f0cc
AA		 5994 struct compound_hdr hdr;
5995 int status;
5996
bf269551 5997 status = decode_compound_hdr(xdr, &hdr);
2050f0cc 5998 if (!status)
bf269551 5999 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
2050f0cc 6000 if (!status)
bf269551 6001 status = decode_putrootfh(xdr);
2050f0cc 6002 if (!status)
bf269551 6003 status = decode_fsinfo(xdr, res->lr_fsinfo);
2050f0cc
AA		 6004 return status;
6005}
18019753
RL		 6006
6007/*
6008 * Decode RECLAIM_COMPLETE response
6009 */
bf269551
CL		 6010static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6011 struct xdr_stream *xdr,
18019753
RL		 6012 struct nfs41_reclaim_complete_res *res)
6013{
18019753
RL		 6014 struct compound_hdr hdr;
6015 int status;
6016
bf269551 6017 status = decode_compound_hdr(xdr, &hdr);
18019753 6018 if (!status)
bf269551 6019 status = decode_sequence(xdr, &res->seq_res, rqstp);
18019753 6020 if (!status)
bf269551 6021 status = decode_reclaim_complete(xdr, (void *)NULL);
18019753
RL		 6022 return status;
6023}
b1f69b75
AA		 6024
6025/*
6026 * Decode GETDEVINFO response
6027 */
bf269551
CL		 6028static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6029 struct xdr_stream *xdr,
b1f69b75
AA		 6030 struct nfs4_getdeviceinfo_res *res)
6031{
b1f69b75
AA		 6032 struct compound_hdr hdr;
6033 int status;
6034
bf269551 6035 status = decode_compound_hdr(xdr, &hdr);
b1f69b75
AA		 6036 if (status != 0)
6037 goto out;
bf269551 6038 status = decode_sequence(xdr, &res->seq_res, rqstp);
b1f69b75
AA		 6039 if (status != 0)
6040 goto out;
bf269551 6041 status = decode_getdeviceinfo(xdr, res->pdev);
b1f69b75
AA		 6042out:
6043 return status;
6044}
6045
6046/*
6047 * Decode LAYOUTGET response
6048 */
bf269551
CL		 6049static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6050 struct xdr_stream *xdr,
b1f69b75
AA		 6051 struct nfs4_layoutget_res *res)
6052{
b1f69b75
AA		 6053 struct compound_hdr hdr;
6054 int status;
6055
bf269551 6056 status = decode_compound_hdr(xdr, &hdr);
b1f69b75
AA		 6057 if (status)
6058 goto out;
bf269551 6059 status = decode_sequence(xdr, &res->seq_res, rqstp);
b1f69b75
AA		 6060 if (status)
6061 goto out;
bf269551 6062 status = decode_putfh(xdr);
b1f69b75
AA		 6063 if (status)
6064 goto out;
bf269551 6065 status = decode_layoutget(xdr, rqstp, res);
b1f69b75
AA		 6066out:
6067 return status;
6068}
99fe60d0
BH		 6069#endif /* CONFIG_NFS_V4_1 */
6070
573c4e1e
CL		 6071/**
6072 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6073 * the local page cache.
6074 * @xdr: XDR stream where entry resides
6075 * @entry: buffer to fill in with entry data
6076 * @plus: boolean indicating whether this should be a readdirplus entry
6077 *
6078 * Returns zero if successful, otherwise a negative errno value is
6079 * returned.
6080 *
6081 * This function is not invoked during READDIR reply decoding, but
6082 * rather whenever an application invokes the getdents(2) system call
6083 * on a directory already in our cache.
6084 */
6085int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6086 int plus)
1da177e4
LT		 6087{
6088 uint32_t bitmap[2] = {0};
6089 uint32_t len;
babddc72
BS		 6090 __be32 *p = xdr_inline_decode(xdr, 4);
6091 if (unlikely(!p))
6092 goto out_overflow;
c08e76d0 6093 if (*p == xdr_zero) {
babddc72
BS		 6094 p = xdr_inline_decode(xdr, 4);
6095 if (unlikely(!p))
6096 goto out_overflow;
c08e76d0 6097 if (*p == xdr_zero)
573c4e1e 6098 return -EAGAIN;
1da177e4 6099 entry->eof = 1;
573c4e1e 6100 return -EBADCOOKIE;
1da177e4
LT		 6101 }
6102
babddc72
BS		 6103 p = xdr_inline_decode(xdr, 12);
6104 if (unlikely(!p))
6105 goto out_overflow;
1da177e4
LT		 6106 entry->prev_cookie = entry->cookie;
6107 p = xdr_decode_hyper(p, &entry->cookie);
c08e76d0 6108 entry->len = be32_to_cpup(p);
babddc72 6109
9af8c222 6110 p = xdr_inline_decode(xdr, entry->len);
babddc72
BS		 6111 if (unlikely(!p))
6112 goto out_overflow;
1da177e4 6113 entry->name = (const char *) p;
1da177e4
LT		 6114
6115 /*
6116 * In case the server doesn't return an inode number,
6117 * we fake one here. (We don't use inode number 0,
6118 * since glibc seems to choke on it...)
6119 */
6120 entry->ino = 1;
4f082222 6121 entry->fattr->valid = 0;
1da177e4 6122
9af8c222
TM		 6123 if (decode_attr_bitmap(xdr, bitmap) < 0)
6124 goto out_overflow;
6125
6126 if (decode_attr_length(xdr, &len, &p) < 0)
6127 goto out_overflow;
6128
573c4e1e
CL		 6129 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
6130 entry->server, 1) < 0)
9af8c222
TM		 6131 goto out_overflow;
6132 if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6133 entry->ino = entry->fattr->fileid;
6134
0b26a0bf
TM		 6135 entry->d_type = DT_UNKNOWN;
6136 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6137 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6138
573c4e1e 6139 return 0;
babddc72
BS		 6140
6141out_overflow:
6142 print_overflow_msg(__func__, xdr);
573c4e1e 6143 return -EAGAIN;
1da177e4
LT		 6144}
6145
6146/*
6147 * We need to translate between nfs status return values and
6148 * the local errno values which may not be the same.
6149 */
6150static struct {
6151 int stat;
6152 int errno;
6153} nfs_errtbl[] = {
6154 { NFS4_OK, 0 },
856dff3d
BH		 6155 { NFS4ERR_PERM, -EPERM },
6156 { NFS4ERR_NOENT, -ENOENT },
6157 { NFS4ERR_IO, -errno_NFSERR_IO},
6158 { NFS4ERR_NXIO, -ENXIO },
6159 { NFS4ERR_ACCESS, -EACCES },
6160 { NFS4ERR_EXIST, -EEXIST },
6161 { NFS4ERR_XDEV, -EXDEV },
6162 { NFS4ERR_NOTDIR, -ENOTDIR },
6163 { NFS4ERR_ISDIR, -EISDIR },
6164 { NFS4ERR_INVAL, -EINVAL },
6165 { NFS4ERR_FBIG, -EFBIG },
6166 { NFS4ERR_NOSPC, -ENOSPC },
6167 { NFS4ERR_ROFS, -EROFS },
6168 { NFS4ERR_MLINK, -EMLINK },
6169 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
6170 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
6171 { NFS4ERR_DQUOT, -EDQUOT },
6172 { NFS4ERR_STALE, -ESTALE },
6173 { NFS4ERR_BADHANDLE, -EBADHANDLE },
6174 { NFS4ERR_BADOWNER, -EINVAL },
6175 { NFS4ERR_BADNAME, -EINVAL },
6176 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
6177 { NFS4ERR_NOTSUPP, -ENOTSUPP },
6178 { NFS4ERR_TOOSMALL, -ETOOSMALL },
fdcb4577 6179 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
856dff3d
BH		 6180 { NFS4ERR_BADTYPE, -EBADTYPE },
6181 { NFS4ERR_LOCKED, -EAGAIN },
856dff3d
BH		 6182 { NFS4ERR_SYMLINK, -ELOOP },
6183 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
6184 { NFS4ERR_DEADLOCK, -EDEADLK },
6185 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
1da177e4
LT		 6186 * to be handled by a
6187 * middle-layer.
6188 */
856dff3d 6189 { -1, -EIO }
1da177e4
LT		 6190};
6191
6192/*
6193 * Convert an NFS error code to a local one.
6194 * This one is used jointly by NFSv2 and NFSv3.
6195 */
6196static int
0a8ea437 6197nfs4_stat_to_errno(int stat)
1da177e4
LT		 6198{
6199 int i;
6200 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
6201 if (nfs_errtbl[i].stat == stat)
6202 return nfs_errtbl[i].errno;
6203 }
6204 if (stat <= 10000 || stat > 10100) {
6205 /* The server is looney tunes. */
fdcb4577 6206 return -EREMOTEIO;
1da177e4
LT		 6207 }
6208 /* If we cannot translate the error, the recovery routines should
6209 * handle it.
6210 * Note: remaining NFSv4 error codes have values > 10000, so should
6211 * not conflict with native Linux error codes.
6212 */
856dff3d 6213 return -stat;
1da177e4
LT		 6214}
6215
1da177e4
LT		 6216#define PROC(proc, argtype, restype) \
6217[NFSPROC4_CLNT_##proc] = { \
6218 .p_proc = NFSPROC4_COMPOUND, \
9f06c719 6219 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
bf269551 6220 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
2bea90d4
CL		 6221 .p_arglen = NFS4_##argtype##_sz, \
6222 .p_replen = NFS4_##restype##_sz, \
cc0175c1
CL		 6223 .p_statidx = NFSPROC4_CLNT_##proc, \
6224 .p_name = #proc, \
05d564fe 6225}
1da177e4
LT		 6226
6227struct rpc_procinfo nfs4_procedures[] = {
7d93bd71
CL		 6228 PROC(READ, enc_read, dec_read),
6229 PROC(WRITE, enc_write, dec_write),
6230 PROC(COMMIT, enc_commit, dec_commit),
6231 PROC(OPEN, enc_open, dec_open),
6232 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
6233 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
6234 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
6235 PROC(CLOSE, enc_close, dec_close),
6236 PROC(SETATTR, enc_setattr, dec_setattr),
6237 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
6238 PROC(RENEW, enc_renew, dec_renew),
6239 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
6240 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
6241 PROC(LOCK, enc_lock, dec_lock),
6242 PROC(LOCKT, enc_lockt, dec_lockt),
6243 PROC(LOCKU, enc_locku, dec_locku),
6244 PROC(ACCESS, enc_access, dec_access),
6245 PROC(GETATTR, enc_getattr, dec_getattr),
6246 PROC(LOOKUP, enc_lookup, dec_lookup),
6247 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
6248 PROC(REMOVE, enc_remove, dec_remove),
6249 PROC(RENAME, enc_rename, dec_rename),
6250 PROC(LINK, enc_link, dec_link),
6251 PROC(SYMLINK, enc_symlink, dec_symlink),
6252 PROC(CREATE, enc_create, dec_create),
6253 PROC(PATHCONF, enc_pathconf, dec_pathconf),
6254 PROC(STATFS, enc_statfs, dec_statfs),
6255 PROC(READLINK, enc_readlink, dec_readlink),
6256 PROC(READDIR, enc_readdir, dec_readdir),
6257 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
6258 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
6259 PROC(GETACL, enc_getacl, dec_getacl),
6260 PROC(SETACL, enc_setacl, dec_setacl),
6261 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
6262 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
99fe60d0 6263#if defined(CONFIG_NFS_V4_1)
7d93bd71
CL		 6264 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
6265 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
6266 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
6267 PROC(SEQUENCE, enc_sequence, dec_sequence),
6268 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
6269 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
6270 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
6271 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
99fe60d0 6272#endif /* CONFIG_NFS_V4_1 */
1da177e4
LT		 6273};
6274
6275struct rpc_version nfs_version4 = {
6276 .number = 4,
e8c96f8c 6277 .nrprocs = ARRAY_SIZE(nfs4_procedures),
1da177e4
LT		 6278 .procs = nfs4_procedures
6279};
6280
6281/*
6282 * Local variables:
6283 * c-basic-offset: 8
6284 * End:
6285 */
Linux kernel - Deliverables
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