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NFSv4: Try to recover from getfh failures in nfs4_xdr_dec_open
[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>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/slab.h>
42#include <linux/utsname.h>
43#include <linux/errno.h>
44#include <linux/string.h>
45#include <linux/in.h>
46#include <linux/pagemap.h>
47#include <linux/proc_fs.h>
48#include <linux/kdev_t.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/nfs.h>
51#include <linux/nfs4.h>
52#include <linux/nfs_fs.h>
53#include <linux/nfs_idmap.h>
4ce79717 54#include "nfs4_fs.h"
1da177e4
LT		 55
56#define NFSDBG_FACILITY NFSDBG_XDR
57
58/* Mapping from NFS error code to "errno" error code. */
59#define errno_NFSERR_IO EIO
60
0a8ea437 61static int nfs4_stat_to_errno(int);
1da177e4
LT		 62
63/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
64#ifdef DEBUG
65#define NFS4_MAXTAGLEN 20
66#else
67#define NFS4_MAXTAGLEN 0
68#endif
69
70/* lock,open owner id:
9f958ab8 71 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
1da177e4 72 */
9f958ab8
TM		 73#define open_owner_id_maxsz (1 + 4)
74#define lock_owner_id_maxsz (1 + 4)
1da177e4
LT		 75#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
76#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77#define op_encode_hdr_maxsz (1)
78#define op_decode_hdr_maxsz (2)
79#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
80 (NFS4_FHSIZE >> 2))
81#define decode_putfh_maxsz (op_decode_hdr_maxsz)
82#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
83#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
84#define encode_getfh_maxsz (op_encode_hdr_maxsz)
85#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
86 ((3+NFS4_FHSIZE) >> 2))
96928206
BF		 87#define nfs4_fattr_bitmap_maxsz 3
88#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 89#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
90#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
bd625ba8
TM		 91#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
92#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
96928206
BF		 93/* This is based on getfattr, which uses the most attributes: */
94#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
bd625ba8 95 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
96928206
BF		 96#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
97 nfs4_fattr_value_maxsz)
98#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
1da177e4
LT		 99#define encode_savefh_maxsz (op_encode_hdr_maxsz)
100#define decode_savefh_maxsz (op_decode_hdr_maxsz)
56ae19f3
TM		 101#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
102#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
1da177e4
LT		 103#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
104#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
105#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
106#define decode_renew_maxsz (op_decode_hdr_maxsz)
107#define encode_setclientid_maxsz \
108 (op_encode_hdr_maxsz + \
109 4 /*server->ip_addr*/ + \
110 1 /*Netid*/ + \
111 6 /*uaddr*/ + \
112 6 + (NFS4_VERIFIER_SIZE >> 2))
113#define decode_setclientid_maxsz \
114 (op_decode_hdr_maxsz + \
115 2 + \
116 1024) /* large value for CLID_INUSE */
117#define encode_setclientid_confirm_maxsz \
118 (op_encode_hdr_maxsz + \
119 3 + (NFS4_VERIFIER_SIZE >> 2))
120#define decode_setclientid_confirm_maxsz \
121 (op_decode_hdr_maxsz)
e6889620
TM		 122#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
123#define decode_lookup_maxsz (op_decode_hdr_maxsz)
2cebf828
TM		 124#define encode_share_access_maxsz \
125 (2)
126#define encode_createmode_maxsz (1 + nfs4_fattr_maxsz)
127#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
128#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
129#define encode_open_maxsz (op_encode_hdr_maxsz + \
130 2 + encode_share_access_maxsz + 2 + \
131 open_owner_id_maxsz + \
132 encode_opentype_maxsz + \
133 encode_claim_null_maxsz)
134#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
135#define decode_delegation_maxsz (1 + XDR_QUADLEN(NFS4_STATEID_SIZE) + 1 + \
136 decode_ace_maxsz)
137#define decode_change_info_maxsz (5)
138#define decode_open_maxsz (op_decode_hdr_maxsz + \
139 XDR_QUADLEN(NFS4_STATEID_SIZE) + \
140 decode_change_info_maxsz + 1 + \
141 nfs4_fattr_bitmap_maxsz + \
142 decode_delegation_maxsz)
1da177e4
LT		 143#define encode_remove_maxsz (op_encode_hdr_maxsz + \
144 nfs4_name_maxsz)
145#define encode_rename_maxsz (op_encode_hdr_maxsz + \
146 2 * nfs4_name_maxsz)
147#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
148#define encode_link_maxsz (op_encode_hdr_maxsz + \
149 nfs4_name_maxsz)
150#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
151#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
152 1 + nfs4_name_maxsz + \
94a6d753 153 1 + \
96928206 154 nfs4_fattr_maxsz)
1da177e4
LT		 155#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
156#define encode_create_maxsz (op_encode_hdr_maxsz + \
157 2 + nfs4_name_maxsz + \
96928206 158 nfs4_fattr_maxsz)
2cebf828
TM		 159#define decode_create_maxsz (op_decode_hdr_maxsz + \
160 decode_change_info_maxsz + \
161 nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 162#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
163#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
e6889620
TM		 164#define encode_fs_locations_maxsz \
165 (encode_getattr_maxsz)
166#define decode_fs_locations_maxsz \
167 (0)
1da177e4
LT		 168#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
169#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
170#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
171 encode_putfh_maxsz + \
172 op_encode_hdr_maxsz + 7)
173#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
174 decode_putfh_maxsz + \
175 op_decode_hdr_maxsz + 2)
176#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
177 encode_putfh_maxsz + \
178 op_encode_hdr_maxsz)
179#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
180 decode_putfh_maxsz + \
181 op_decode_hdr_maxsz)
182#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
183 encode_putfh_maxsz + \
184 op_encode_hdr_maxsz + 9)
185#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
186 decode_putfh_maxsz + \
187 op_decode_hdr_maxsz + 2)
188#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
4f9838c7
TM		 190 op_encode_hdr_maxsz + 8 + \
191 encode_getattr_maxsz)
1da177e4
LT		 192#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
193 decode_putfh_maxsz + \
4f9838c7
TM		 194 op_decode_hdr_maxsz + 4 + \
195 decode_getattr_maxsz)
1da177e4
LT		 196#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
197 encode_putfh_maxsz + \
4f9838c7
TM		 198 op_encode_hdr_maxsz + 3 + \
199 encode_getattr_maxsz)
1da177e4
LT		 200#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
201 decode_putfh_maxsz + \
4f9838c7
TM		 202 op_decode_hdr_maxsz + 2 + \
203 decode_getattr_maxsz)
1da177e4 204#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
2cebf828
TM		 205 encode_putfh_maxsz + \
206 encode_savefh_maxsz + \
207 encode_open_maxsz + \
208 encode_getfh_maxsz + \
209 encode_getattr_maxsz + \
210 encode_restorefh_maxsz + \
211 encode_getattr_maxsz)
1da177e4 212#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
2cebf828
TM		 213 decode_putfh_maxsz + \
214 decode_savefh_maxsz + \
215 decode_open_maxsz + \
216 decode_getfh_maxsz + \
217 decode_getattr_maxsz + \
218 decode_restorefh_maxsz + \
219 decode_getattr_maxsz)
1da177e4
LT		 220#define NFS4_enc_open_confirm_sz \
221 (compound_encode_hdr_maxsz + \
222 encode_putfh_maxsz + \
223 op_encode_hdr_maxsz + 5)
224#define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
225 decode_putfh_maxsz + \
226 op_decode_hdr_maxsz + 4)
227#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
228 encode_putfh_maxsz + \
2cebf828
TM		 229 encode_open_maxsz + \
230 encode_getattr_maxsz)
1da177e4
LT		 231#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
232 decode_putfh_maxsz + \
2cebf828
TM		 233 decode_open_maxsz + \
234 decode_getattr_maxsz)
1da177e4
LT		 235#define NFS4_enc_open_downgrade_sz \
236 (compound_encode_hdr_maxsz + \
237 encode_putfh_maxsz + \
516a6af6
TM		 238 op_encode_hdr_maxsz + 7 + \
239 encode_getattr_maxsz)
1da177e4
LT		 240#define NFS4_dec_open_downgrade_sz \
241 (compound_decode_hdr_maxsz + \
242 decode_putfh_maxsz + \
516a6af6
TM		 243 op_decode_hdr_maxsz + 4 + \
244 decode_getattr_maxsz)
1da177e4
LT		 245#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
246 encode_putfh_maxsz + \
516a6af6
TM		 247 op_encode_hdr_maxsz + 5 + \
248 encode_getattr_maxsz)
1da177e4
LT		 249#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
250 decode_putfh_maxsz + \
516a6af6
TM		 251 op_decode_hdr_maxsz + 4 + \
252 decode_getattr_maxsz)
1da177e4
LT		 253#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
254 encode_putfh_maxsz + \
255 op_encode_hdr_maxsz + 4 + \
96928206 256 nfs4_fattr_maxsz + \
1da177e4
LT		 257 encode_getattr_maxsz)
258#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
259 decode_putfh_maxsz + \
6ce7dc94
CL		 260 op_decode_hdr_maxsz + 3 + \
261 nfs4_fattr_maxsz)
1da177e4
LT		 262#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
263 encode_putfh_maxsz + \
264 encode_fsinfo_maxsz)
265#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
266 decode_putfh_maxsz + \
267 decode_fsinfo_maxsz)
268#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
269 encode_renew_maxsz)
270#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
271 decode_renew_maxsz)
272#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
273 encode_setclientid_maxsz)
274#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
275 decode_setclientid_maxsz)
276#define NFS4_enc_setclientid_confirm_sz \
277 (compound_encode_hdr_maxsz + \
278 encode_setclientid_confirm_maxsz + \
279 encode_putrootfh_maxsz + \
280 encode_fsinfo_maxsz)
281#define NFS4_dec_setclientid_confirm_sz \
282 (compound_decode_hdr_maxsz + \
283 decode_setclientid_confirm_maxsz + \
284 decode_putrootfh_maxsz + \
285 decode_fsinfo_maxsz)
286#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
287 encode_putfh_maxsz + \
288 encode_getattr_maxsz + \
289 op_encode_hdr_maxsz + \
290 1 + 1 + 2 + 2 + \
291 1 + 4 + 1 + 2 + \
2cebf828 292 lock_owner_id_maxsz)
1da177e4
LT		 293#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
294 decode_putfh_maxsz + \
295 decode_getattr_maxsz + \
296 op_decode_hdr_maxsz + \
297 2 + 2 + 1 + 2 + \
2cebf828 298 lock_owner_id_maxsz)
1da177e4
LT		 299#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
300 encode_putfh_maxsz + \
301 encode_getattr_maxsz + \
302 op_encode_hdr_maxsz + \
303 1 + 2 + 2 + 2 + \
2cebf828 304 lock_owner_id_maxsz)
1da177e4
LT		 305#define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
306#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
307 encode_putfh_maxsz + \
308 encode_getattr_maxsz + \
309 op_encode_hdr_maxsz + \
310 1 + 1 + 4 + 2 + 2)
311#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
312 decode_putfh_maxsz + \
313 decode_getattr_maxsz + \
314 op_decode_hdr_maxsz + 4)
315#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
316 encode_putfh_maxsz + \
317 op_encode_hdr_maxsz + 1)
318#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
319 decode_putfh_maxsz + \
320 op_decode_hdr_maxsz + 2)
321#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
322 encode_putfh_maxsz + \
323 encode_getattr_maxsz)
324#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
325 decode_putfh_maxsz + \
326 decode_getattr_maxsz)
327#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
328 encode_putfh_maxsz + \
329 encode_lookup_maxsz + \
330 encode_getattr_maxsz + \
331 encode_getfh_maxsz)
332#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
333 decode_putfh_maxsz + \
e6889620 334 decode_lookup_maxsz + \
1da177e4
LT		 335 decode_getattr_maxsz + \
336 decode_getfh_maxsz)
337#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
338 encode_putrootfh_maxsz + \
339 encode_getattr_maxsz + \
340 encode_getfh_maxsz)
341#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
342 decode_putrootfh_maxsz + \
343 decode_getattr_maxsz + \
344 decode_getfh_maxsz)
345#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
346 encode_putfh_maxsz + \
16e42959
TM		 347 encode_remove_maxsz + \
348 encode_getattr_maxsz)
1da177e4
LT		 349#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
350 decode_putfh_maxsz + \
16e42959
TM		 351 op_decode_hdr_maxsz + 5 + \
352 decode_getattr_maxsz)
1da177e4
LT		 353#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
354 encode_putfh_maxsz + \
355 encode_savefh_maxsz + \
356 encode_putfh_maxsz + \
6caf2c82
TM		 357 encode_rename_maxsz + \
358 encode_getattr_maxsz + \
359 encode_restorefh_maxsz + \
360 encode_getattr_maxsz)
1da177e4
LT		 361#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
362 decode_putfh_maxsz + \
363 decode_savefh_maxsz + \
364 decode_putfh_maxsz + \
6caf2c82
TM		 365 decode_rename_maxsz + \
366 decode_getattr_maxsz + \
367 decode_restorefh_maxsz + \
368 decode_getattr_maxsz)
1da177e4
LT		 369#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
370 encode_putfh_maxsz + \
371 encode_savefh_maxsz + \
372 encode_putfh_maxsz + \
91ba2eee
TM		 373 encode_link_maxsz + \
374 decode_getattr_maxsz + \
375 encode_restorefh_maxsz + \
376 decode_getattr_maxsz)
1da177e4
LT		 377#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
378 decode_putfh_maxsz + \
379 decode_savefh_maxsz + \
380 decode_putfh_maxsz + \
91ba2eee
TM		 381 decode_link_maxsz + \
382 decode_getattr_maxsz + \
383 decode_restorefh_maxsz + \
384 decode_getattr_maxsz)
1da177e4
LT		 385#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
386 encode_putfh_maxsz + \
387 encode_symlink_maxsz + \
388 encode_getattr_maxsz + \
389 encode_getfh_maxsz)
390#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
391 decode_putfh_maxsz + \
392 decode_symlink_maxsz + \
393 decode_getattr_maxsz + \
394 decode_getfh_maxsz)
395#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
396 encode_putfh_maxsz + \
56ae19f3 397 encode_savefh_maxsz + \
1da177e4 398 encode_create_maxsz + \
56ae19f3 399 encode_getfh_maxsz + \
1da177e4 400 encode_getattr_maxsz + \
56ae19f3
TM		 401 encode_restorefh_maxsz + \
402 encode_getattr_maxsz)
1da177e4
LT		 403#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
404 decode_putfh_maxsz + \
56ae19f3 405 decode_savefh_maxsz + \
1da177e4 406 decode_create_maxsz + \
56ae19f3 407 decode_getfh_maxsz + \
1da177e4 408 decode_getattr_maxsz + \
56ae19f3
TM		 409 decode_restorefh_maxsz + \
410 decode_getattr_maxsz)
1da177e4
LT		 411#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
412 encode_putfh_maxsz + \
413 encode_getattr_maxsz)
414#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
415 decode_putfh_maxsz + \
416 decode_getattr_maxsz)
417#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
418 encode_putfh_maxsz + \
419 encode_getattr_maxsz)
420#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
421 decode_putfh_maxsz + \
422 op_decode_hdr_maxsz + 12)
423#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
ab91f264 424 encode_putfh_maxsz + \
1da177e4
LT		 425 encode_getattr_maxsz)
426#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
ab91f264 427 decode_putfh_maxsz + \
1da177e4
LT		 428 decode_getattr_maxsz)
429#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
430 encode_putfh_maxsz + \
fa178f29
TM		 431 encode_delegreturn_maxsz + \
432 encode_getattr_maxsz)
1da177e4 433#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
fa178f29
TM		 434 decode_delegreturn_maxsz + \
435 decode_getattr_maxsz)
029d105e
BF		 436#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
437 encode_putfh_maxsz + \
438 encode_getattr_maxsz)
439#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
440 decode_putfh_maxsz + \
441 op_decode_hdr_maxsz + \
442 nfs4_fattr_bitmap_maxsz + 1)
23ec6965
BF		 443#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
444 encode_putfh_maxsz + \
445 op_encode_hdr_maxsz + 4 + \
446 nfs4_fattr_bitmap_maxsz + 1)
447#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
448 decode_putfh_maxsz + \
449 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
683b57b4
TM		 450#define NFS4_enc_fs_locations_sz \
451 (compound_encode_hdr_maxsz + \
452 encode_putfh_maxsz + \
e6889620
TM		 453 encode_lookup_maxsz + \
454 encode_fs_locations_maxsz)
683b57b4
TM		 455#define NFS4_dec_fs_locations_sz \
456 (compound_decode_hdr_maxsz + \
457 decode_putfh_maxsz + \
e6889620
TM		 458 decode_lookup_maxsz + \
459 decode_fs_locations_maxsz)
1da177e4
LT		 460
461static struct {
462 unsigned int mode;
463 unsigned int nfs2type;
464} nfs_type2fmt[] = {
465 { 0, NFNON },
466 { S_IFREG, NFREG },
467 { S_IFDIR, NFDIR },
468 { S_IFBLK, NFBLK },
469 { S_IFCHR, NFCHR },
470 { S_IFLNK, NFLNK },
471 { S_IFSOCK, NFSOCK },
472 { S_IFIFO, NFFIFO },
473 { 0, NFNON },
474 { 0, NFNON },
475};
476
477struct compound_hdr {
478 int32_t status;
479 uint32_t nops;
480 uint32_t taglen;
481 char * tag;
482};
483
484/*
485 * START OF "GENERIC" ENCODE ROUTINES.
486 * These may look a little ugly since they are imported from a "generic"
487 * set of XDR encode/decode routines which are intended to be shared by
488 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
489 *
490 * If the pain of reading these is too great, it should be a straightforward
491 * task to translate them into Linux-specific versions which are more
492 * consistent with the style used in NFSv2/v3...
493 */
494#define WRITE32(n) *p++ = htonl(n)
495#define WRITE64(n) do { \
496 *p++ = htonl((uint32_t)((n) >> 32)); \
497 *p++ = htonl((uint32_t)(n)); \
498} while (0)
499#define WRITEMEM(ptr,nbytes) do { \
500 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
501} while (0)
502
503#define RESERVE_SPACE(nbytes) do { \
504 p = xdr_reserve_space(xdr, nbytes); \
505 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
506 BUG_ON(!p); \
507} while (0)
508
509static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
510{
8687b63a 511 __be32 *p;
1da177e4
LT		 512
513 p = xdr_reserve_space(xdr, 4 + len);
514 BUG_ON(p == NULL);
515 xdr_encode_opaque(p, str, len);
516}
517
518static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
519{
8687b63a 520 __be32 *p;
1da177e4
LT		 521
522 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
523 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
524 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
525 WRITE32(hdr->taglen);
526 WRITEMEM(hdr->tag, hdr->taglen);
527 WRITE32(NFS4_MINOR_VERSION);
528 WRITE32(hdr->nops);
529 return 0;
530}
531
532static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
533{
8687b63a 534 __be32 *p;
1da177e4
LT		 535
536 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
537 BUG_ON(p == NULL);
538 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
539}
540
541static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
542{
543 char owner_name[IDMAP_NAMESZ];
544 char owner_group[IDMAP_NAMESZ];
545 int owner_namelen = 0;
546 int owner_grouplen = 0;
8687b63a
AV		 547 __be32 *p;
548 __be32 *q;
1da177e4
LT		 549 int len;
550 uint32_t bmval0 = 0;
551 uint32_t bmval1 = 0;
552 int status;
553
554 /*
555 * We reserve enough space to write the entire attribute buffer at once.
556 * In the worst-case, this would be
557 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
558 * = 36 bytes, plus any contribution from variable-length fields
23ec6965 559 * such as owner/group.
1da177e4
LT		 560 */
561 len = 16;
562
563 /* Sigh */
564 if (iap->ia_valid & ATTR_SIZE)
565 len += 8;
566 if (iap->ia_valid & ATTR_MODE)
567 len += 4;
568 if (iap->ia_valid & ATTR_UID) {
7539bbab 569 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
1da177e4
LT		 570 if (owner_namelen < 0) {
571 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
572 iap->ia_uid);
573 /* XXX */
574 strcpy(owner_name, "nobody");
575 owner_namelen = sizeof("nobody") - 1;
576 /* goto out; */
577 }
578 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
579 }
580 if (iap->ia_valid & ATTR_GID) {
7539bbab 581 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
1da177e4
LT		 582 if (owner_grouplen < 0) {
583 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
584 iap->ia_gid);
585 strcpy(owner_group, "nobody");
586 owner_grouplen = sizeof("nobody") - 1;
587 /* goto out; */
588 }
589 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
590 }
591 if (iap->ia_valid & ATTR_ATIME_SET)
592 len += 16;
593 else if (iap->ia_valid & ATTR_ATIME)
594 len += 4;
595 if (iap->ia_valid & ATTR_MTIME_SET)
596 len += 16;
597 else if (iap->ia_valid & ATTR_MTIME)
598 len += 4;
599 RESERVE_SPACE(len);
600
601 /*
602 * We write the bitmap length now, but leave the bitmap and the attribute
603 * buffer length to be backfilled at the end of this routine.
604 */
605 WRITE32(2);
606 q = p;
607 p += 3;
608
609 if (iap->ia_valid & ATTR_SIZE) {
610 bmval0 |= FATTR4_WORD0_SIZE;
611 WRITE64(iap->ia_size);
612 }
613 if (iap->ia_valid & ATTR_MODE) {
614 bmval1 |= FATTR4_WORD1_MODE;
cf3fff54 615 WRITE32(iap->ia_mode & S_IALLUGO);
1da177e4
LT		 616 }
617 if (iap->ia_valid & ATTR_UID) {
618 bmval1 |= FATTR4_WORD1_OWNER;
619 WRITE32(owner_namelen);
620 WRITEMEM(owner_name, owner_namelen);
621 }
622 if (iap->ia_valid & ATTR_GID) {
623 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
624 WRITE32(owner_grouplen);
625 WRITEMEM(owner_group, owner_grouplen);
626 }
627 if (iap->ia_valid & ATTR_ATIME_SET) {
628 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
629 WRITE32(NFS4_SET_TO_CLIENT_TIME);
630 WRITE32(0);
631 WRITE32(iap->ia_mtime.tv_sec);
632 WRITE32(iap->ia_mtime.tv_nsec);
633 }
634 else if (iap->ia_valid & ATTR_ATIME) {
635 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
636 WRITE32(NFS4_SET_TO_SERVER_TIME);
637 }
638 if (iap->ia_valid & ATTR_MTIME_SET) {
639 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
640 WRITE32(NFS4_SET_TO_CLIENT_TIME);
641 WRITE32(0);
642 WRITE32(iap->ia_mtime.tv_sec);
643 WRITE32(iap->ia_mtime.tv_nsec);
644 }
645 else if (iap->ia_valid & ATTR_MTIME) {
646 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
647 WRITE32(NFS4_SET_TO_SERVER_TIME);
648 }
649
650 /*
651 * Now we backfill the bitmap and the attribute buffer length.
652 */
653 if (len != ((char *)p - (char *)q) + 4) {
654 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
655 len, ((char *)p - (char *)q) + 4);
656 BUG();
657 }
658 len = (char *)p - (char *)q - 12;
659 *q++ = htonl(bmval0);
660 *q++ = htonl(bmval1);
661 *q++ = htonl(len);
662
663 status = 0;
664/* out: */
665 return status;
666}
667
668static int encode_access(struct xdr_stream *xdr, u32 access)
669{
8687b63a 670 __be32 *p;
1da177e4
LT		 671
672 RESERVE_SPACE(8);
673 WRITE32(OP_ACCESS);
674 WRITE32(access);
675
676 return 0;
677}
678
679static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
680{
8687b63a 681 __be32 *p;
1da177e4 682
8ae20abd 683 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
1da177e4 684 WRITE32(OP_CLOSE);
cee54fc9 685 WRITE32(arg->seqid->sequence->counter);
8ae20abd 686 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 687
688 return 0;
689}
690
691static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
692{
8687b63a 693 __be32 *p;
1da177e4
LT		 694
695 RESERVE_SPACE(16);
696 WRITE32(OP_COMMIT);
697 WRITE64(args->offset);
698 WRITE32(args->count);
699
700 return 0;
701}
702
703static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
704{
8687b63a 705 __be32 *p;
1da177e4
LT		 706
707 RESERVE_SPACE(8);
708 WRITE32(OP_CREATE);
709 WRITE32(create->ftype);
710
711 switch (create->ftype) {
712 case NF4LNK:
94a6d753
CL		 713 RESERVE_SPACE(4);
714 WRITE32(create->u.symlink.len);
715 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1da177e4
LT		 716 break;
717
718 case NF4BLK: case NF4CHR:
719 RESERVE_SPACE(8);
720 WRITE32(create->u.device.specdata1);
721 WRITE32(create->u.device.specdata2);
722 break;
723
724 default:
725 break;
726 }
727
728 RESERVE_SPACE(4 + create->name->len);
729 WRITE32(create->name->len);
730 WRITEMEM(create->name->name, create->name->len);
731
732 return encode_attrs(xdr, create->attrs, create->server);
733}
734
735static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
736{
8687b63a 737 __be32 *p;
1da177e4
LT		 738
739 RESERVE_SPACE(12);
740 WRITE32(OP_GETATTR);
741 WRITE32(1);
742 WRITE32(bitmap);
743 return 0;
744}
745
746static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
747{
8687b63a 748 __be32 *p;
1da177e4
LT		 749
750 RESERVE_SPACE(16);
751 WRITE32(OP_GETATTR);
752 WRITE32(2);
753 WRITE32(bm0);
754 WRITE32(bm1);
755 return 0;
756}
757
758static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
759{
1da177e4
LT		 760 return encode_getattr_two(xdr,
761 bitmask[0] & nfs4_fattr_bitmap[0],
762 bitmask[1] & nfs4_fattr_bitmap[1]);
763}
764
765static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
766{
1da177e4
LT		 767 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
768 bitmask[1] & nfs4_fsinfo_bitmap[1]);
769}
770
830b8e33
MN		 771static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
772{
773 return encode_getattr_two(xdr,
774 bitmask[0] & nfs4_fs_locations_bitmap[0],
775 bitmask[1] & nfs4_fs_locations_bitmap[1]);
776}
777
1da177e4
LT		 778static int encode_getfh(struct xdr_stream *xdr)
779{
8687b63a 780 __be32 *p;
1da177e4
LT		 781
782 RESERVE_SPACE(4);
783 WRITE32(OP_GETFH);
784
785 return 0;
786}
787
788static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
789{
8687b63a 790 __be32 *p;
1da177e4
LT		 791
792 RESERVE_SPACE(8 + name->len);
793 WRITE32(OP_LINK);
794 WRITE32(name->len);
795 WRITEMEM(name->name, name->len);
796
797 return 0;
798}
799
911d1aaf
TM		 800static inline int nfs4_lock_type(struct file_lock *fl, int block)
801{
802 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
803 return block ? NFS4_READW_LT : NFS4_READ_LT;
804 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
805}
806
807static inline uint64_t nfs4_lock_length(struct file_lock *fl)
808{
809 if (fl->fl_end == OFFSET_MAX)
810 return ~(uint64_t)0;
811 return fl->fl_end - fl->fl_start + 1;
812}
813
1da177e4
LT		 814/*
815 * opcode,type,reclaim,offset,length,new_lock_owner = 32
816 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
817 */
911d1aaf 818static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
1da177e4 819{
8687b63a 820 __be32 *p;
1da177e4
LT		 821
822 RESERVE_SPACE(32);
823 WRITE32(OP_LOCK);
911d1aaf
TM		 824 WRITE32(nfs4_lock_type(args->fl, args->block));
825 WRITE32(args->reclaim);
826 WRITE64(args->fl->fl_start);
827 WRITE64(nfs4_lock_length(args->fl));
828 WRITE32(args->new_lock_owner);
829 if (args->new_lock_owner){
9f958ab8 830 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
911d1aaf 831 WRITE32(args->open_seqid->sequence->counter);
8ae20abd 832 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
911d1aaf
TM		 833 WRITE32(args->lock_seqid->sequence->counter);
834 WRITE64(args->lock_owner.clientid);
9f958ab8
TM		 835 WRITE32(16);
836 WRITEMEM("lock id:", 8);
837 WRITE64(args->lock_owner.id);
1da177e4
LT		 838 }
839 else {
8ae20abd
TM		 840 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
841 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
911d1aaf 842 WRITE32(args->lock_seqid->sequence->counter);
1da177e4
LT		 843 }
844
845 return 0;
846}
847
911d1aaf 848static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
1da177e4 849{
8687b63a 850 __be32 *p;
1da177e4 851
9f958ab8 852 RESERVE_SPACE(52);
1da177e4 853 WRITE32(OP_LOCKT);
911d1aaf
TM		 854 WRITE32(nfs4_lock_type(args->fl, 0));
855 WRITE64(args->fl->fl_start);
856 WRITE64(nfs4_lock_length(args->fl));
857 WRITE64(args->lock_owner.clientid);
9f958ab8
TM		 858 WRITE32(16);
859 WRITEMEM("lock id:", 8);
860 WRITE64(args->lock_owner.id);
1da177e4
LT		 861
862 return 0;
863}
864
911d1aaf 865static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
1da177e4 866{
8687b63a 867 __be32 *p;
1da177e4 868
8ae20abd 869 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
1da177e4 870 WRITE32(OP_LOCKU);
911d1aaf
TM		 871 WRITE32(nfs4_lock_type(args->fl, 0));
872 WRITE32(args->seqid->sequence->counter);
8ae20abd 873 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
911d1aaf
TM		 874 WRITE64(args->fl->fl_start);
875 WRITE64(nfs4_lock_length(args->fl));
1da177e4
LT		 876
877 return 0;
878}
879
880static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
881{
882 int len = name->len;
8687b63a 883 __be32 *p;
1da177e4
LT		 884
885 RESERVE_SPACE(8 + len);
886 WRITE32(OP_LOOKUP);
887 WRITE32(len);
888 WRITEMEM(name->name, len);
889
890 return 0;
891}
892
893static void encode_share_access(struct xdr_stream *xdr, int open_flags)
894{
8687b63a 895 __be32 *p;
1da177e4
LT		 896
897 RESERVE_SPACE(8);
898 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
899 case FMODE_READ:
900 WRITE32(NFS4_SHARE_ACCESS_READ);
901 break;
902 case FMODE_WRITE:
903 WRITE32(NFS4_SHARE_ACCESS_WRITE);
904 break;
905 case FMODE_READ|FMODE_WRITE:
906 WRITE32(NFS4_SHARE_ACCESS_BOTH);
907 break;
908 default:
909 BUG();
910 }
911 WRITE32(0); /* for linux, share_deny = 0 always */
912}
913
914static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
915{
8687b63a 916 __be32 *p;
1da177e4
LT		 917 /*
918 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
919 * owner 4 = 32
920 */
921 RESERVE_SPACE(8);
922 WRITE32(OP_OPEN);
cee54fc9 923 WRITE32(arg->seqid->sequence->counter);
1da177e4 924 encode_share_access(xdr, arg->open_flags);
9f958ab8 925 RESERVE_SPACE(28);
1da177e4 926 WRITE64(arg->clientid);
9f958ab8
TM		 927 WRITE32(16);
928 WRITEMEM("open id:", 8);
929 WRITE64(arg->id);
1da177e4
LT		 930}
931
932static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
933{
8687b63a 934 __be32 *p;
1da177e4
LT		 935
936 RESERVE_SPACE(4);
937 switch(arg->open_flags & O_EXCL) {
938 case 0:
939 WRITE32(NFS4_CREATE_UNCHECKED);
940 encode_attrs(xdr, arg->u.attrs, arg->server);
941 break;
942 default:
943 WRITE32(NFS4_CREATE_EXCLUSIVE);
944 encode_nfs4_verifier(xdr, &arg->u.verifier);
945 }
946}
947
948static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
949{
8687b63a 950 __be32 *p;
1da177e4
LT		 951
952 RESERVE_SPACE(4);
953 switch (arg->open_flags & O_CREAT) {
954 case 0:
955 WRITE32(NFS4_OPEN_NOCREATE);
956 break;
957 default:
958 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
959 WRITE32(NFS4_OPEN_CREATE);
960 encode_createmode(xdr, arg);
961 }
962}
963
964static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
965{
8687b63a 966 __be32 *p;
1da177e4
LT		 967
968 RESERVE_SPACE(4);
969 switch (delegation_type) {
970 case 0:
971 WRITE32(NFS4_OPEN_DELEGATE_NONE);
972 break;
973 case FMODE_READ:
974 WRITE32(NFS4_OPEN_DELEGATE_READ);
975 break;
976 case FMODE_WRITE|FMODE_READ:
977 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
978 break;
979 default:
980 BUG();
981 }
982}
983
984static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
985{
8687b63a 986 __be32 *p;
1da177e4
LT		 987
988 RESERVE_SPACE(4);
989 WRITE32(NFS4_OPEN_CLAIM_NULL);
990 encode_string(xdr, name->len, name->name);
991}
992
993static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
994{
8687b63a 995 __be32 *p;
1da177e4
LT		 996
997 RESERVE_SPACE(4);
998 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
999 encode_delegation_type(xdr, type);
1000}
1001
1002static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1003{
8687b63a 1004 __be32 *p;
1da177e4 1005
8ae20abd 1006 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1da177e4 1007 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
8ae20abd 1008 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 1009 encode_string(xdr, name->len, name->name);
1010}
1011
1012static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1013{
1014 encode_openhdr(xdr, arg);
1015 encode_opentype(xdr, arg);
1016 switch (arg->claim) {
1017 case NFS4_OPEN_CLAIM_NULL:
1018 encode_claim_null(xdr, arg->name);
1019 break;
1020 case NFS4_OPEN_CLAIM_PREVIOUS:
1021 encode_claim_previous(xdr, arg->u.delegation_type);
1022 break;
1023 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1024 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1025 break;
1026 default:
1027 BUG();
1028 }
1029 return 0;
1030}
1031
1032static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
1033{
8687b63a 1034 __be32 *p;
1da177e4 1035
8ae20abd 1036 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1da177e4 1037 WRITE32(OP_OPEN_CONFIRM);
8ae20abd 1038 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
cee54fc9 1039 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1040
1041 return 0;
1042}
1043
1044static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
1045{
8687b63a 1046 __be32 *p;
1da177e4 1047
8ae20abd 1048 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1da177e4 1049 WRITE32(OP_OPEN_DOWNGRADE);
8ae20abd 1050 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
cee54fc9 1051 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1052 encode_share_access(xdr, arg->open_flags);
1053 return 0;
1054}
1055
1056static int
1057encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1058{
1059 int len = fh->size;
8687b63a 1060 __be32 *p;
1da177e4
LT		 1061
1062 RESERVE_SPACE(8 + len);
1063 WRITE32(OP_PUTFH);
1064 WRITE32(len);
1065 WRITEMEM(fh->data, len);
1066
1067 return 0;
1068}
1069
1070static int encode_putrootfh(struct xdr_stream *xdr)
1071{
8687b63a 1072 __be32 *p;
1da177e4
LT		 1073
1074 RESERVE_SPACE(4);
1075 WRITE32(OP_PUTROOTFH);
1076
1077 return 0;
1078}
1079
1080static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1081{
1da177e4 1082 nfs4_stateid stateid;
8687b63a 1083 __be32 *p;
1da177e4 1084
8ae20abd 1085 RESERVE_SPACE(NFS4_STATEID_SIZE);
1da177e4
LT		 1086 if (ctx->state != NULL) {
1087 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
8ae20abd 1088 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1da177e4 1089 } else
8ae20abd 1090 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 1091}
1092
1093static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1094{
8687b63a 1095 __be32 *p;
1da177e4
LT		 1096
1097 RESERVE_SPACE(4);
1098 WRITE32(OP_READ);
1099
1100 encode_stateid(xdr, args->context);
1101
1102 RESERVE_SPACE(12);
1103 WRITE64(args->offset);
1104 WRITE32(args->count);
1105
1106 return 0;
1107}
1108
1109static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1110{
1be27f36 1111 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
97d312d0
MN		 1112 uint32_t attrs[2] = {
1113 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1114 FATTR4_WORD1_MOUNTED_ON_FILEID,
1115 };
1da177e4 1116 int replen;
8687b63a 1117 __be32 *p;
1da177e4 1118
8ae20abd 1119 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1da177e4
LT		 1120 WRITE32(OP_READDIR);
1121 WRITE64(readdir->cookie);
8ae20abd 1122 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1123 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1124 WRITE32(readdir->count);
1125 WRITE32(2);
97d312d0
MN		 1126 /* Switch to mounted_on_fileid if the server supports it */
1127 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1128 attrs[0] &= ~FATTR4_WORD0_FILEID;
1129 else
1130 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1131 WRITE32(attrs[0] & readdir->bitmask[0]);
1132 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1133 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1134 __FUNCTION__,
1135 (unsigned long long)readdir->cookie,
1136 ((u32 *)readdir->verifier.data)[0],
1137 ((u32 *)readdir->verifier.data)[1],
1138 attrs[0] & readdir->bitmask[0],
1139 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1140
1141 /* set up reply kvec
1142 * toplevel_status + taglen + rescount + OP_PUTFH + status
1143 * + OP_READDIR + status + verifer(2) = 9
1144 */
1145 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1146 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1147 readdir->pgbase, readdir->count);
eadf4598
TM		 1148 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1149 __FUNCTION__, replen, readdir->pages,
1150 readdir->pgbase, readdir->count);
1da177e4
LT		 1151
1152 return 0;
1153}
1154
1155static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1156{
1be27f36 1157 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1da177e4 1158 unsigned int replen;
8687b63a 1159 __be32 *p;
1da177e4
LT		 1160
1161 RESERVE_SPACE(4);
1162 WRITE32(OP_READLINK);
1163
1164 /* set up reply kvec
1165 * toplevel_status + taglen + rescount + OP_PUTFH + status
1166 * + OP_READLINK + status + string length = 8
1167 */
1168 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1169 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1170 readlink->pgbase, readlink->pglen);
1171
1172 return 0;
1173}
1174
1175static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1176{
8687b63a 1177 __be32 *p;
1da177e4
LT		 1178
1179 RESERVE_SPACE(8 + name->len);
1180 WRITE32(OP_REMOVE);
1181 WRITE32(name->len);
1182 WRITEMEM(name->name, name->len);
1183
1184 return 0;
1185}
1186
1187static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1188{
8687b63a 1189 __be32 *p;
1da177e4
LT		 1190
1191 RESERVE_SPACE(8 + oldname->len);
1192 WRITE32(OP_RENAME);
1193 WRITE32(oldname->len);
1194 WRITEMEM(oldname->name, oldname->len);
1195
1196 RESERVE_SPACE(4 + newname->len);
1197 WRITE32(newname->len);
1198 WRITEMEM(newname->name, newname->len);
1199
1200 return 0;
1201}
1202
adfa6f98 1203static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
1da177e4 1204{
8687b63a 1205 __be32 *p;
1da177e4
LT		 1206
1207 RESERVE_SPACE(12);
1208 WRITE32(OP_RENEW);
1209 WRITE64(client_stateid->cl_clientid);
1210
1211 return 0;
1212}
1213
56ae19f3
TM		 1214static int
1215encode_restorefh(struct xdr_stream *xdr)
1216{
8687b63a 1217 __be32 *p;
56ae19f3
TM		 1218
1219 RESERVE_SPACE(4);
1220 WRITE32(OP_RESTOREFH);
1221
1222 return 0;
1223}
1224
23ec6965
BF		 1225static int
1226encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1227{
8687b63a 1228 __be32 *p;
23ec6965 1229
8ae20abd 1230 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
23ec6965 1231 WRITE32(OP_SETATTR);
8ae20abd 1232 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
23ec6965
BF		 1233 RESERVE_SPACE(2*4);
1234 WRITE32(1);
1235 WRITE32(FATTR4_WORD0_ACL);
1236 if (arg->acl_len % 4)
1237 return -EINVAL;
1238 RESERVE_SPACE(4);
1239 WRITE32(arg->acl_len);
1240 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1241 return 0;
1242}
1243
1da177e4
LT		 1244static int
1245encode_savefh(struct xdr_stream *xdr)
1246{
8687b63a 1247 __be32 *p;
1da177e4
LT		 1248
1249 RESERVE_SPACE(4);
1250 WRITE32(OP_SAVEFH);
1251
1252 return 0;
1253}
1254
1255static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1256{
1257 int status;
8687b63a 1258 __be32 *p;
1da177e4 1259
8ae20abd 1260 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1da177e4 1261 WRITE32(OP_SETATTR);
8ae20abd 1262 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 1263
1264 if ((status = encode_attrs(xdr, arg->iap, server)))
1265 return status;
1266
1267 return 0;
1268}
1269
1270static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1271{
8687b63a 1272 __be32 *p;
1da177e4 1273
8ae20abd 1274 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1da177e4 1275 WRITE32(OP_SETCLIENTID);
8ae20abd 1276 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1277
1278 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1279 RESERVE_SPACE(4);
1280 WRITE32(setclientid->sc_prog);
1281 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1282 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1283 RESERVE_SPACE(4);
1284 WRITE32(setclientid->sc_cb_ident);
1285
1286 return 0;
1287}
1288
adfa6f98 1289static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
1da177e4 1290{
8687b63a 1291 __be32 *p;
1da177e4 1292
8ae20abd 1293 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1da177e4
LT		 1294 WRITE32(OP_SETCLIENTID_CONFIRM);
1295 WRITE64(client_state->cl_clientid);
8ae20abd 1296 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1297
1298 return 0;
1299}
1300
1301static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1302{
8687b63a 1303 __be32 *p;
1da177e4
LT		 1304
1305 RESERVE_SPACE(4);
1306 WRITE32(OP_WRITE);
1307
1308 encode_stateid(xdr, args->context);
1309
1310 RESERVE_SPACE(16);
1311 WRITE64(args->offset);
1312 WRITE32(args->stable);
1313 WRITE32(args->count);
1314
1315 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1316
1317 return 0;
1318}
1319
1320static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1321{
8687b63a 1322 __be32 *p;
1da177e4 1323
8ae20abd 1324 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1da177e4
LT		 1325
1326 WRITE32(OP_DELEGRETURN);
8ae20abd 1327 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 1328 return 0;
1329
1330}
1331/*
1332 * END OF "GENERIC" ENCODE ROUTINES.
1333 */
1334
1335/*
1336 * Encode an ACCESS request
1337 */
8687b63a 1338static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1da177e4
LT		 1339{
1340 struct xdr_stream xdr;
1341 struct compound_hdr hdr = {
1342 .nops = 2,
1343 };
1344 int status;
1345
1346 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1347 encode_compound_hdr(&xdr, &hdr);
1348 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1349 status = encode_access(&xdr, args->access);
1350 return status;
1351}
1352
1353/*
1354 * Encode LOOKUP request
1355 */
8687b63a 1356static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1da177e4
LT		 1357{
1358 struct xdr_stream xdr;
1359 struct compound_hdr hdr = {
1360 .nops = 4,
1361 };
1362 int status;
1363
1364 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1365 encode_compound_hdr(&xdr, &hdr);
1366 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1367 goto out;
1368 if ((status = encode_lookup(&xdr, args->name)) != 0)
1369 goto out;
1370 if ((status = encode_getfh(&xdr)) != 0)
1371 goto out;
1372 status = encode_getfattr(&xdr, args->bitmask);
1373out:
1374 return status;
1375}
1376
1377/*
1378 * Encode LOOKUP_ROOT request
1379 */
8687b63a 1380static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1da177e4
LT		 1381{
1382 struct xdr_stream xdr;
1383 struct compound_hdr hdr = {
1384 .nops = 3,
1385 };
1386 int status;
1387
1388 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1389 encode_compound_hdr(&xdr, &hdr);
1390 if ((status = encode_putrootfh(&xdr)) != 0)
1391 goto out;
1392 if ((status = encode_getfh(&xdr)) == 0)
1393 status = encode_getfattr(&xdr, args->bitmask);
1394out:
1395 return status;
1396}
1397
1398/*
1399 * Encode REMOVE request
1400 */
8687b63a 1401static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs4_remove_arg *args)
1da177e4
LT		 1402{
1403 struct xdr_stream xdr;
1404 struct compound_hdr hdr = {
16e42959 1405 .nops = 3,
1da177e4
LT		 1406 };
1407 int status;
1408
1409 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1410 encode_compound_hdr(&xdr, &hdr);
16e42959
TM		 1411 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1412 goto out;
1413 if ((status = encode_remove(&xdr, args->name)) != 0)
1414 goto out;
1415 status = encode_getfattr(&xdr, args->bitmask);
1416out:
1da177e4
LT		 1417 return status;
1418}
1419
1420/*
1421 * Encode RENAME request
1422 */
8687b63a 1423static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1da177e4
LT		 1424{
1425 struct xdr_stream xdr;
1426 struct compound_hdr hdr = {
6caf2c82 1427 .nops = 7,
1da177e4
LT		 1428 };
1429 int status;
1430
1431 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1432 encode_compound_hdr(&xdr, &hdr);
1433 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1434 goto out;
1435 if ((status = encode_savefh(&xdr)) != 0)
1436 goto out;
1437 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1438 goto out;
6caf2c82
TM		 1439 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1440 goto out;
1441 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1442 goto out;
1443 if ((status = encode_restorefh(&xdr)) != 0)
1444 goto out;
1445 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1446out:
1447 return status;
1448}
1449
1450/*
1451 * Encode LINK request
1452 */
8687b63a 1453static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1da177e4
LT		 1454{
1455 struct xdr_stream xdr;
1456 struct compound_hdr hdr = {
91ba2eee 1457 .nops = 7,
1da177e4
LT		 1458 };
1459 int status;
1460
1461 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1462 encode_compound_hdr(&xdr, &hdr);
1463 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1464 goto out;
1465 if ((status = encode_savefh(&xdr)) != 0)
1466 goto out;
1467 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1468 goto out;
91ba2eee
TM		 1469 if ((status = encode_link(&xdr, args->name)) != 0)
1470 goto out;
1471 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1472 goto out;
1473 if ((status = encode_restorefh(&xdr)) != 0)
1474 goto out;
1475 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1476out:
1477 return status;
1478}
1479
1480/*
1481 * Encode CREATE request
1482 */
8687b63a 1483static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1da177e4
LT		 1484{
1485 struct xdr_stream xdr;
1486 struct compound_hdr hdr = {
56ae19f3 1487 .nops = 7,
1da177e4
LT		 1488 };
1489 int status;
1490
1491 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1492 encode_compound_hdr(&xdr, &hdr);
1493 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1494 goto out;
56ae19f3
TM		 1495 if ((status = encode_savefh(&xdr)) != 0)
1496 goto out;
1da177e4
LT		 1497 if ((status = encode_create(&xdr, args)) != 0)
1498 goto out;
1499 if ((status = encode_getfh(&xdr)) != 0)
1500 goto out;
56ae19f3
TM		 1501 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1502 goto out;
1503 if ((status = encode_restorefh(&xdr)) != 0)
1504 goto out;
1da177e4
LT		 1505 status = encode_getfattr(&xdr, args->bitmask);
1506out:
1507 return status;
1508}
1509
1510/*
1511 * Encode SYMLINK request
1512 */
8687b63a 1513static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1da177e4
LT		 1514{
1515 return nfs4_xdr_enc_create(req, p, args);
1516}
1517
1518/*
1519 * Encode GETATTR request
1520 */
8687b63a 1521static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1da177e4
LT		 1522{
1523 struct xdr_stream xdr;
1524 struct compound_hdr hdr = {
1525 .nops = 2,
1526 };
1527 int status;
1528
1529 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1530 encode_compound_hdr(&xdr, &hdr);
1531 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1532 status = encode_getfattr(&xdr, args->bitmask);
1533 return status;
1534}
1535
1536/*
1537 * Encode a CLOSE request
1538 */
8687b63a 1539static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1da177e4
LT		 1540{
1541 struct xdr_stream xdr;
1542 struct compound_hdr hdr = {
516a6af6 1543 .nops = 3,
1da177e4
LT		 1544 };
1545 int status;
1546
1547 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1548 encode_compound_hdr(&xdr, &hdr);
1549 status = encode_putfh(&xdr, args->fh);
1550 if(status)
1551 goto out;
1552 status = encode_close(&xdr, args);
516a6af6
TM		 1553 if (status != 0)
1554 goto out;
1555 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1556out:
1557 return status;
1558}
1559
1560/*
1561 * Encode an OPEN request
1562 */
8687b63a 1563static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1da177e4
LT		 1564{
1565 struct xdr_stream xdr;
1566 struct compound_hdr hdr = {
56ae19f3 1567 .nops = 7,
1da177e4
LT		 1568 };
1569 int status;
1570
1571 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1572 encode_compound_hdr(&xdr, &hdr);
1573 status = encode_putfh(&xdr, args->fh);
56ae19f3
TM		 1574 if (status)
1575 goto out;
1576 status = encode_savefh(&xdr);
1da177e4
LT		 1577 if (status)
1578 goto out;
1579 status = encode_open(&xdr, args);
1580 if (status)
1581 goto out;
1582 status = encode_getfh(&xdr);
1583 if (status)
1584 goto out;
1585 status = encode_getfattr(&xdr, args->bitmask);
56ae19f3
TM		 1586 if (status)
1587 goto out;
1588 status = encode_restorefh(&xdr);
1589 if (status)
1590 goto out;
1591 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1592out:
1593 return status;
1594}
1595
1596/*
1597 * Encode an OPEN_CONFIRM request
1598 */
8687b63a 1599static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1da177e4
LT		 1600{
1601 struct xdr_stream xdr;
1602 struct compound_hdr hdr = {
1603 .nops = 2,
1604 };
1605 int status;
1606
1607 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1608 encode_compound_hdr(&xdr, &hdr);
1609 status = encode_putfh(&xdr, args->fh);
1610 if(status)
1611 goto out;
1612 status = encode_open_confirm(&xdr, args);
1613out:
1614 return status;
1615}
1616
1617/*
1618 * Encode an OPEN request with no attributes.
1619 */
8687b63a 1620static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1da177e4
LT		 1621{
1622 struct xdr_stream xdr;
1623 struct compound_hdr hdr = {
864472e9 1624 .nops = 3,
1da177e4
LT		 1625 };
1626 int status;
1627
1628 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1629 encode_compound_hdr(&xdr, &hdr);
1630 status = encode_putfh(&xdr, args->fh);
1631 if (status)
1632 goto out;
1633 status = encode_open(&xdr, args);
864472e9
TM		 1634 if (status)
1635 goto out;
1636 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1637out:
1638 return status;
1639}
1640
1641/*
1642 * Encode an OPEN_DOWNGRADE request
1643 */
8687b63a 1644static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1da177e4
LT		 1645{
1646 struct xdr_stream xdr;
1647 struct compound_hdr hdr = {
516a6af6 1648 .nops = 3,
1da177e4
LT		 1649 };
1650 int status;
1651
1652 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1653 encode_compound_hdr(&xdr, &hdr);
1654 status = encode_putfh(&xdr, args->fh);
1655 if (status)
1656 goto out;
1657 status = encode_open_downgrade(&xdr, args);
516a6af6
TM		 1658 if (status != 0)
1659 goto out;
1660 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1661out:
1662 return status;
1663}
1664
1665/*
1666 * Encode a LOCK request
1667 */
8687b63a 1668static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1da177e4
LT		 1669{
1670 struct xdr_stream xdr;
1671 struct compound_hdr hdr = {
1672 .nops = 2,
1673 };
1674 int status;
1675
1676 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1677 encode_compound_hdr(&xdr, &hdr);
1678 status = encode_putfh(&xdr, args->fh);
1679 if(status)
1680 goto out;
1681 status = encode_lock(&xdr, args);
1682out:
1683 return status;
1684}
1685
1686/*
1687 * Encode a LOCKT request
1688 */
8687b63a 1689static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1da177e4
LT		 1690{
1691 struct xdr_stream xdr;
1692 struct compound_hdr hdr = {
1693 .nops = 2,
1694 };
1695 int status;
1696
1697 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1698 encode_compound_hdr(&xdr, &hdr);
1699 status = encode_putfh(&xdr, args->fh);
1700 if(status)
1701 goto out;
1702 status = encode_lockt(&xdr, args);
1703out:
1704 return status;
1705}
1706
1707/*
1708 * Encode a LOCKU request
1709 */
8687b63a 1710static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1da177e4
LT		 1711{
1712 struct xdr_stream xdr;
1713 struct compound_hdr hdr = {
1714 .nops = 2,
1715 };
1716 int status;
1717
1718 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1719 encode_compound_hdr(&xdr, &hdr);
1720 status = encode_putfh(&xdr, args->fh);
1721 if(status)
1722 goto out;
1723 status = encode_locku(&xdr, args);
1724out:
1725 return status;
1726}
1727
1728/*
1729 * Encode a READLINK request
1730 */
8687b63a 1731static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1da177e4
LT		 1732{
1733 struct xdr_stream xdr;
1734 struct compound_hdr hdr = {
1735 .nops = 2,
1736 };
1737 int status;
1738
1739 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1740 encode_compound_hdr(&xdr, &hdr);
1741 status = encode_putfh(&xdr, args->fh);
1742 if(status)
1743 goto out;
1744 status = encode_readlink(&xdr, args, req);
1745out:
1746 return status;
1747}
1748
1749/*
1750 * Encode a READDIR request
1751 */
8687b63a 1752static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1da177e4
LT		 1753{
1754 struct xdr_stream xdr;
1755 struct compound_hdr hdr = {
1756 .nops = 2,
1757 };
1758 int status;
1759
1760 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1761 encode_compound_hdr(&xdr, &hdr);
1762 status = encode_putfh(&xdr, args->fh);
1763 if(status)
1764 goto out;
1765 status = encode_readdir(&xdr, args, req);
1766out:
1767 return status;
1768}
1769
1770/*
1771 * Encode a READ request
1772 */
8687b63a 1773static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1da177e4 1774{
1be27f36 1775 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1da177e4
LT		 1776 struct xdr_stream xdr;
1777 struct compound_hdr hdr = {
1778 .nops = 2,
1779 };
1780 int replen, status;
1781
1782 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1783 encode_compound_hdr(&xdr, &hdr);
1784 status = encode_putfh(&xdr, args->fh);
1785 if (status)
1786 goto out;
1787 status = encode_read(&xdr, args);
1788 if (status)
1789 goto out;
1790
1791 /* set up reply kvec
1792 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1793 * + OP_READ + status + eof + datalen = 9
1794 */
1795 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1796 xdr_inline_pages(&req->rq_rcv_buf, replen,
1797 args->pages, args->pgbase, args->count);
1798out:
1799 return status;
1800}
1801
1802/*
1803 * Encode an SETATTR request
1804 */
8687b63a 1805static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1da177e4
LT		 1806
1807{
1808 struct xdr_stream xdr;
1809 struct compound_hdr hdr = {
1810 .nops = 3,
1811 };
1812 int status;
1813
1814 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1815 encode_compound_hdr(&xdr, &hdr);
1816 status = encode_putfh(&xdr, args->fh);
1817 if(status)
1818 goto out;
1819 status = encode_setattr(&xdr, args, args->server);
1820 if(status)
1821 goto out;
1822 status = encode_getfattr(&xdr, args->bitmask);
1823out:
1824 return status;
1825}
1826
029d105e
BF		 1827/*
1828 * Encode a GETACL request
1829 */
1830static int
8687b63a 1831nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
029d105e
BF		 1832 struct nfs_getaclargs *args)
1833{
1834 struct xdr_stream xdr;
1be27f36 1835 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
029d105e
BF		 1836 struct compound_hdr hdr = {
1837 .nops = 2,
1838 };
1839 int replen, status;
1840
1841 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1842 encode_compound_hdr(&xdr, &hdr);
1843 status = encode_putfh(&xdr, args->fh);
1844 if (status)
1845 goto out;
1846 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1847 /* set up reply buffer: */
1848 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1849 xdr_inline_pages(&req->rq_rcv_buf, replen,
1850 args->acl_pages, args->acl_pgbase, args->acl_len);
1851out:
1852 return status;
1853}
1854
1da177e4
LT		 1855/*
1856 * Encode a WRITE request
1857 */
8687b63a 1858static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1da177e4
LT		 1859{
1860 struct xdr_stream xdr;
1861 struct compound_hdr hdr = {
4f9838c7 1862 .nops = 3,
1da177e4
LT		 1863 };
1864 int status;
1865
1866 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1867 encode_compound_hdr(&xdr, &hdr);
1868 status = encode_putfh(&xdr, args->fh);
1869 if (status)
1870 goto out;
1871 status = encode_write(&xdr, args);
4f9838c7
TM		 1872 if (status)
1873 goto out;
1874 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1875out:
1876 return status;
1877}
1878
1879/*
1880 * a COMMIT request
1881 */
8687b63a 1882static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1da177e4
LT		 1883{
1884 struct xdr_stream xdr;
1885 struct compound_hdr hdr = {
4f9838c7 1886 .nops = 3,
1da177e4
LT		 1887 };
1888 int status;
1889
1890 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1891 encode_compound_hdr(&xdr, &hdr);
1892 status = encode_putfh(&xdr, args->fh);
1893 if (status)
1894 goto out;
1895 status = encode_commit(&xdr, args);
4f9838c7
TM		 1896 if (status)
1897 goto out;
1898 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1899out:
1900 return status;
1901}
1902
1903/*
1904 * FSINFO request
1905 */
8687b63a 1906static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
1da177e4
LT		 1907{
1908 struct xdr_stream xdr;
1909 struct compound_hdr hdr = {
1910 .nops = 2,
1911 };
1912 int status;
1913
1914 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1915 encode_compound_hdr(&xdr, &hdr);
1916 status = encode_putfh(&xdr, args->fh);
1917 if (!status)
1918 status = encode_fsinfo(&xdr, args->bitmask);
1919 return status;
1920}
1921
1922/*
1923 * a PATHCONF request
1924 */
8687b63a 1925static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
1da177e4 1926{
1da177e4
LT		 1927 struct xdr_stream xdr;
1928 struct compound_hdr hdr = {
1929 .nops = 2,
1930 };
1931 int status;
1932
1933 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1934 encode_compound_hdr(&xdr, &hdr);
1935 status = encode_putfh(&xdr, args->fh);
1936 if (!status)
1937 status = encode_getattr_one(&xdr,
1938 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1939 return status;
1940}
1941
1942/*
1943 * a STATFS request
1944 */
8687b63a 1945static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
1da177e4 1946{
1da177e4
LT		 1947 struct xdr_stream xdr;
1948 struct compound_hdr hdr = {
1949 .nops = 2,
1950 };
1951 int status;
1952
1953 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1954 encode_compound_hdr(&xdr, &hdr);
1955 status = encode_putfh(&xdr, args->fh);
1956 if (status == 0)
1957 status = encode_getattr_two(&xdr,
1958 args->bitmask[0] & nfs4_statfs_bitmap[0],
1959 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1960 return status;
1961}
1962
1963/*
1964 * GETATTR_BITMAP request
1965 */
8687b63a 1966static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
1da177e4
LT		 1967{
1968 struct xdr_stream xdr;
1969 struct compound_hdr hdr = {
1970 .nops = 2,
1971 };
1972 int status;
1973
1974 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1975 encode_compound_hdr(&xdr, &hdr);
1976 status = encode_putfh(&xdr, fhandle);
1977 if (status == 0)
1978 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1979 FATTR4_WORD0_LINK_SUPPORT|
1980 FATTR4_WORD0_SYMLINK_SUPPORT|
1981 FATTR4_WORD0_ACLSUPPORT);
1982 return status;
1983}
1984
1985/*
1986 * a RENEW request
1987 */
8687b63a 1988static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1da177e4
LT		 1989{
1990 struct xdr_stream xdr;
1991 struct compound_hdr hdr = {
1992 .nops = 1,
1993 };
1994
1995 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1996 encode_compound_hdr(&xdr, &hdr);
1997 return encode_renew(&xdr, clp);
1998}
1999
2000/*
2001 * a SETCLIENTID request
2002 */
8687b63a 2003static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
1da177e4
LT		 2004{
2005 struct xdr_stream xdr;
2006 struct compound_hdr hdr = {
2007 .nops = 1,
2008 };
2009
2010 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2011 encode_compound_hdr(&xdr, &hdr);
2012 return encode_setclientid(&xdr, sc);
2013}
2014
2015/*
2016 * a SETCLIENTID_CONFIRM request
2017 */
8687b63a 2018static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1da177e4
LT		 2019{
2020 struct xdr_stream xdr;
2021 struct compound_hdr hdr = {
2022 .nops = 3,
2023 };
2024 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2025 int status;
2026
2027 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2028 encode_compound_hdr(&xdr, &hdr);
2029 status = encode_setclientid_confirm(&xdr, clp);
2030 if (!status)
2031 status = encode_putrootfh(&xdr);
2032 if (!status)
2033 status = encode_fsinfo(&xdr, lease_bitmap);
2034 return status;
2035}
2036
2037/*
2038 * DELEGRETURN request
2039 */
8687b63a 2040static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
1da177e4
LT		 2041{
2042 struct xdr_stream xdr;
2043 struct compound_hdr hdr = {
fa178f29 2044 .nops = 3,
1da177e4
LT		 2045 };
2046 int status;
2047
2048 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2049 encode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 2050 status = encode_putfh(&xdr, args->fhandle);
2051 if (status != 0)
2052 goto out;
2053 status = encode_delegreturn(&xdr, args->stateid);
2054 if (status != 0)
2055 goto out;
2056 status = encode_getfattr(&xdr, args->bitmask);
2057out:
1da177e4
LT		 2058 return status;
2059}
2060
683b57b4
TM		 2061/*
2062 * Encode FS_LOCATIONS request
2063 */
8687b63a 2064static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
683b57b4
TM		 2065{
2066 struct xdr_stream xdr;
2067 struct compound_hdr hdr = {
2068 .nops = 3,
2069 };
1be27f36 2070 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
683b57b4
TM		 2071 int replen;
2072 int status;
2073
2074 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2075 encode_compound_hdr(&xdr, &hdr);
2076 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2077 goto out;
2078 if ((status = encode_lookup(&xdr, args->name)) != 0)
2079 goto out;
830b8e33 2080 if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
683b57b4
TM		 2081 goto out;
2082 /* set up reply
830b8e33 2083 * toplevel_status + OP_PUTFH + status
683b57b4
TM		 2084 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2085 */
2086 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2087 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2088 0, PAGE_SIZE);
2089out:
2090 return status;
2091}
2092
1da177e4
LT		 2093/*
2094 * START OF "GENERIC" DECODE ROUTINES.
2095 * These may look a little ugly since they are imported from a "generic"
2096 * set of XDR encode/decode routines which are intended to be shared by
2097 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2098 *
2099 * If the pain of reading these is too great, it should be a straightforward
2100 * task to translate them into Linux-specific versions which are more
2101 * consistent with the style used in NFSv2/v3...
2102 */
2103#define READ32(x) (x) = ntohl(*p++)
2104#define READ64(x) do { \
2105 (x) = (u64)ntohl(*p++) << 32; \
2106 (x) |= ntohl(*p++); \
2107} while (0)
2108#define READTIME(x) do { \
2109 p++; \
2110 (x.tv_sec) = ntohl(*p++); \
2111 (x.tv_nsec) = ntohl(*p++); \
2112} while (0)
2113#define COPYMEM(x,nbytes) do { \
2114 memcpy((x), p, nbytes); \
2115 p += XDR_QUADLEN(nbytes); \
2116} while (0)
2117
2118#define READ_BUF(nbytes) do { \
2119 p = xdr_inline_decode(xdr, nbytes); \
e4cc6ee2
CL		 2120 if (unlikely(!p)) { \
2121 printk(KERN_INFO "%s: prematurely hit end of receive" \
2122 " buffer\n", __FUNCTION__); \
2123 printk(KERN_INFO "%s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2124 __FUNCTION__, xdr->p, nbytes, xdr->end); \
1da177e4
LT		 2125 return -EIO; \
2126 } \
2127} while (0)
2128
683b57b4 2129static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
1da177e4 2130{
8687b63a 2131 __be32 *p;
1da177e4
LT		 2132
2133 READ_BUF(4);
2134 READ32(*len);
2135 READ_BUF(*len);
2136 *string = (char *)p;
2137 return 0;
2138}
2139
2140static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2141{
8687b63a 2142 __be32 *p;
1da177e4
LT		 2143
2144 READ_BUF(8);
2145 READ32(hdr->status);
2146 READ32(hdr->taglen);
2147
2148 READ_BUF(hdr->taglen + 4);
2149 hdr->tag = (char *)p;
2150 p += XDR_QUADLEN(hdr->taglen);
2151 READ32(hdr->nops);
2152 return 0;
2153}
2154
2155static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2156{
8687b63a 2157 __be32 *p;
1da177e4
LT		 2158 uint32_t opnum;
2159 int32_t nfserr;
2160
2161 READ_BUF(8);
2162 READ32(opnum);
2163 if (opnum != expected) {
2164 printk(KERN_NOTICE
2165 "nfs4_decode_op_hdr: Server returned operation"
2166 " %d but we issued a request for %d\n",
2167 opnum, expected);
2168 return -EIO;
2169 }
2170 READ32(nfserr);
2171 if (nfserr != NFS_OK)
0a8ea437 2172 return -nfs4_stat_to_errno(nfserr);
1da177e4
LT		 2173 return 0;
2174}
2175
2176/* Dummy routine */
adfa6f98 2177static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
1da177e4 2178{
8687b63a 2179 __be32 *p;
683b57b4 2180 unsigned int strlen;
1da177e4
LT		 2181 char *str;
2182
2183 READ_BUF(12);
2184 return decode_opaque_inline(xdr, &strlen, &str);
2185}
2186
2187static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2188{
8687b63a
AV		 2189 uint32_t bmlen;
2190 __be32 *p;
1da177e4
LT		 2191
2192 READ_BUF(4);
2193 READ32(bmlen);
2194
2195 bitmap[0] = bitmap[1] = 0;
2196 READ_BUF((bmlen << 2));
2197 if (bmlen > 0) {
2198 READ32(bitmap[0]);
2199 if (bmlen > 1)
2200 READ32(bitmap[1]);
2201 }
2202 return 0;
2203}
2204
8687b63a 2205static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
1da177e4 2206{
8687b63a 2207 __be32 *p;
1da177e4
LT		 2208
2209 READ_BUF(4);
2210 READ32(*attrlen);
2211 *savep = xdr->p;
2212 return 0;
2213}
2214
2215static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2216{
2217 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2218 decode_attr_bitmap(xdr, bitmask);
2219 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2220 } else
2221 bitmask[0] = bitmask[1] = 0;
2222 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2223 return 0;
2224}
2225
2226static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2227{
8687b63a 2228 __be32 *p;
1da177e4
LT		 2229
2230 *type = 0;
2231 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2232 return -EIO;
2233 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2234 READ_BUF(4);
2235 READ32(*type);
2236 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2237 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2238 return -EIO;
2239 }
2240 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2241 }
2242 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2243 return 0;
2244}
2245
2246static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2247{
8687b63a 2248 __be32 *p;
1da177e4
LT		 2249
2250 *change = 0;
2251 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2252 return -EIO;
2253 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2254 READ_BUF(8);
2255 READ64(*change);
2256 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2257 }
2258 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2259 (unsigned long long)*change);
2260 return 0;
2261}
2262
2263static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2264{
8687b63a 2265 __be32 *p;
1da177e4
LT		 2266
2267 *size = 0;
2268 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2269 return -EIO;
2270 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2271 READ_BUF(8);
2272 READ64(*size);
2273 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2274 }
2275 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2276 return 0;
2277}
2278
2279static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2280{
8687b63a 2281 __be32 *p;
1da177e4
LT		 2282
2283 *res = 0;
2284 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2285 return -EIO;
2286 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2287 READ_BUF(4);
2288 READ32(*res);
2289 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2290 }
2291 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2292 return 0;
2293}
2294
2295static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2296{
8687b63a 2297 __be32 *p;
1da177e4
LT		 2298
2299 *res = 0;
2300 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2301 return -EIO;
2302 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2303 READ_BUF(4);
2304 READ32(*res);
2305 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2306 }
2307 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2308 return 0;
2309}
2310
8b4bdcf8 2311static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
1da177e4 2312{
8687b63a 2313 __be32 *p;
1da177e4
LT		 2314
2315 fsid->major = 0;
2316 fsid->minor = 0;
2317 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2318 return -EIO;
2319 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2320 READ_BUF(16);
2321 READ64(fsid->major);
2322 READ64(fsid->minor);
2323 bitmap[0] &= ~FATTR4_WORD0_FSID;
2324 }
2325 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2326 (unsigned long long)fsid->major,
2327 (unsigned long long)fsid->minor);
2328 return 0;
2329}
2330
2331static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2332{
8687b63a 2333 __be32 *p;
1da177e4
LT		 2334
2335 *res = 60;
2336 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2337 return -EIO;
2338 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2339 READ_BUF(4);
2340 READ32(*res);
2341 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2342 }
2343 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2344 return 0;
2345}
2346
2347static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2348{
8687b63a 2349 __be32 *p;
1da177e4
LT		 2350
2351 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2352 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2353 return -EIO;
2354 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2355 READ_BUF(4);
2356 READ32(*res);
2357 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2358 }
2359 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2360 return 0;
2361}
2362
2363static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2364{
8687b63a 2365 __be32 *p;
1da177e4
LT		 2366
2367 *fileid = 0;
2368 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2369 return -EIO;
2370 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2371 READ_BUF(8);
2372 READ64(*fileid);
2373 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2374 }
2375 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2376 return 0;
2377}
2378
99baf625
MN		 2379static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2380{
8687b63a 2381 __be32 *p;
99baf625
MN		 2382
2383 *fileid = 0;
2384 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2385 return -EIO;
2386 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2387 READ_BUF(8);
2388 READ64(*fileid);
2389 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2390 }
2391 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2392 return 0;
2393}
2394
1da177e4
LT		 2395static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2396{
8687b63a 2397 __be32 *p;
1da177e4
LT		 2398 int status = 0;
2399
2400 *res = 0;
2401 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2402 return -EIO;
2403 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2404 READ_BUF(8);
2405 READ64(*res);
2406 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2407 }
2408 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2409 return status;
2410}
2411
2412static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2413{
8687b63a 2414 __be32 *p;
1da177e4
LT		 2415 int status = 0;
2416
2417 *res = 0;
2418 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2419 return -EIO;
2420 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2421 READ_BUF(8);
2422 READ64(*res);
2423 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2424 }
2425 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2426 return status;
2427}
2428
2429static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2430{
8687b63a 2431 __be32 *p;
1da177e4
LT		 2432 int status = 0;
2433
2434 *res = 0;
2435 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2436 return -EIO;
2437 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2438 READ_BUF(8);
2439 READ64(*res);
2440 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2441 }
2442 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2443 return status;
2444}
2445
7aaa0b3b
MN		 2446static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2447{
2448 int n;
8687b63a 2449 __be32 *p;
7aaa0b3b
MN		 2450 int status = 0;
2451
2452 READ_BUF(4);
2453 READ32(n);
33a43f28 2454 if (n < 0)
7aaa0b3b 2455 goto out_eio;
33a43f28
AA		 2456 if (n == 0)
2457 goto root_path;
7aaa0b3b
MN		 2458 dprintk("path ");
2459 path->ncomponents = 0;
2460 while (path->ncomponents < n) {
2461 struct nfs4_string *component = &path->components[path->ncomponents];
2462 status = decode_opaque_inline(xdr, &component->len, &component->data);
2463 if (unlikely(status != 0))
2464 goto out_eio;
2465 if (path->ncomponents != n)
2466 dprintk("/");
2467 dprintk("%s", component->data);
2468 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2469 path->ncomponents++;
2470 else {
2471 dprintk("cannot parse %d components in path\n", n);
2472 goto out_eio;
2473 }
2474 }
2475out:
2476 dprintk("\n");
2477 return status;
33a43f28
AA		 2478root_path:
2479/* a root pathname is sent as a zero component4 */
2480 path->ncomponents = 1;
2481 path->components[0].len=0;
2482 path->components[0].data=NULL;
2483 dprintk("path /\n");
2484 goto out;
7aaa0b3b
MN		 2485out_eio:
2486 dprintk(" status %d", status);
2487 status = -EIO;
2488 goto out;
2489}
2490
2491static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
683b57b4
TM		 2492{
2493 int n;
8687b63a 2494 __be32 *p;
683b57b4
TM		 2495 int status = -EIO;
2496
2497 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2498 goto out;
2499 status = 0;
2500 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2501 goto out;
7aaa0b3b
MN		 2502 dprintk("%s: fsroot ", __FUNCTION__);
2503 status = decode_pathname(xdr, &res->fs_path);
683b57b4
TM		 2504 if (unlikely(status != 0))
2505 goto out;
2506 READ_BUF(4);
2507 READ32(n);
2508 if (n <= 0)
2509 goto out_eio;
2510 res->nlocations = 0;
2511 while (res->nlocations < n) {
7aaa0b3b
MN		 2512 int m;
2513 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
683b57b4 2514
7aaa0b3b
MN		 2515 READ_BUF(4);
2516 READ32(m);
2517 if (m <= 0)
683b57b4 2518 goto out_eio;
7aaa0b3b
MN		 2519
2520 loc->nservers = 0;
2521 dprintk("%s: servers ", __FUNCTION__);
2522 while (loc->nservers < m) {
2523 struct nfs4_string *server = &loc->servers[loc->nservers];
2524 status = decode_opaque_inline(xdr, &server->len, &server->data);
2525 if (unlikely(status != 0))
2526 goto out_eio;
2527 dprintk("%s ", server->data);
2528 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2529 loc->nservers++;
2530 else {
2531 int i;
2532 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2533 for (i = loc->nservers; i < m; i++) {
2e42c3e2 2534 unsigned int len;
7aaa0b3b
MN		 2535 char *data;
2536 status = decode_opaque_inline(xdr, &len, &data);
2537 if (unlikely(status != 0))
2538 goto out_eio;
2539 }
2540 }
2541 }
2542 status = decode_pathname(xdr, &loc->rootpath);
683b57b4
TM		 2543 if (unlikely(status != 0))
2544 goto out_eio;
7aaa0b3b 2545 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
683b57b4
TM		 2546 res->nlocations++;
2547 }
2548out:
2549 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2550 return status;
2551out_eio:
2552 status = -EIO;
2553 goto out;
2554}
2555
1da177e4
LT		 2556static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2557{
8687b63a 2558 __be32 *p;
1da177e4
LT		 2559 int status = 0;
2560
2561 *res = 0;
2562 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2563 return -EIO;
2564 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2565 READ_BUF(8);
2566 READ64(*res);
2567 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2568 }
2569 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2570 return status;
2571}
2572
2573static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2574{
8687b63a 2575 __be32 *p;
1da177e4
LT		 2576 int status = 0;
2577
2578 *maxlink = 1;
2579 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2580 return -EIO;
2581 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2582 READ_BUF(4);
2583 READ32(*maxlink);
2584 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2585 }
2586 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2587 return status;
2588}
2589
2590static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2591{
8687b63a 2592 __be32 *p;
1da177e4
LT		 2593 int status = 0;
2594
2595 *maxname = 1024;
2596 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2597 return -EIO;
2598 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2599 READ_BUF(4);
2600 READ32(*maxname);
2601 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2602 }
2603 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2604 return status;
2605}
2606
2607static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2608{
8687b63a 2609 __be32 *p;
1da177e4
LT		 2610 int status = 0;
2611
2612 *res = 1024;
2613 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2614 return -EIO;
2615 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2616 uint64_t maxread;
2617 READ_BUF(8);
2618 READ64(maxread);
2619 if (maxread > 0x7FFFFFFF)
2620 maxread = 0x7FFFFFFF;
2621 *res = (uint32_t)maxread;
2622 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2623 }
2624 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2625 return status;
2626}
2627
2628static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2629{
8687b63a 2630 __be32 *p;
1da177e4
LT		 2631 int status = 0;
2632
2633 *res = 1024;
2634 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2635 return -EIO;
2636 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2637 uint64_t maxwrite;
2638 READ_BUF(8);
2639 READ64(maxwrite);
2640 if (maxwrite > 0x7FFFFFFF)
2641 maxwrite = 0x7FFFFFFF;
2642 *res = (uint32_t)maxwrite;
2643 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2644 }
2645 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2646 return status;
2647}
2648
2649static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2650{
8687b63a 2651 __be32 *p;
1da177e4
LT		 2652
2653 *mode = 0;
2654 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2655 return -EIO;
2656 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2657 READ_BUF(4);
2658 READ32(*mode);
2659 *mode &= ~S_IFMT;
2660 bitmap[1] &= ~FATTR4_WORD1_MODE;
2661 }
2662 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2663 return 0;
2664}
2665
2666static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2667{
8687b63a 2668 __be32 *p;
1da177e4
LT		 2669
2670 *nlink = 1;
2671 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2672 return -EIO;
2673 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2674 READ_BUF(4);
2675 READ32(*nlink);
2676 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2677 }
2678 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2679 return 0;
2680}
2681
2e42c3e2 2682static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
1da177e4 2683{
8687b63a
AV		 2684 uint32_t len;
2685 __be32 *p;
1da177e4
LT		 2686
2687 *uid = -2;
2688 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2689 return -EIO;
2690 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2691 READ_BUF(4);
2692 READ32(len);
2693 READ_BUF(len);
2694 if (len < XDR_MAX_NETOBJ) {
2695 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2696 dprintk("%s: nfs_map_name_to_uid failed!\n",
2697 __FUNCTION__);
2698 } else
2699 printk(KERN_WARNING "%s: name too long (%u)!\n",
2700 __FUNCTION__, len);
2701 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2702 }
2703 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2704 return 0;
2705}
2706
2e42c3e2 2707static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
1da177e4 2708{
8687b63a
AV		 2709 uint32_t len;
2710 __be32 *p;
1da177e4
LT		 2711
2712 *gid = -2;
2713 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2714 return -EIO;
2715 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2716 READ_BUF(4);
2717 READ32(len);
2718 READ_BUF(len);
2719 if (len < XDR_MAX_NETOBJ) {
2720 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2721 dprintk("%s: nfs_map_group_to_gid failed!\n",
2722 __FUNCTION__);
2723 } else
2724 printk(KERN_WARNING "%s: name too long (%u)!\n",
2725 __FUNCTION__, len);
2726 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2727 }
2728 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2729 return 0;
2730}
2731
2732static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2733{
8687b63a
AV		 2734 uint32_t major = 0, minor = 0;
2735 __be32 *p;
1da177e4
LT		 2736
2737 *rdev = MKDEV(0,0);
2738 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2739 return -EIO;
2740 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2741 dev_t tmp;
2742
2743 READ_BUF(8);
2744 READ32(major);
2745 READ32(minor);
2746 tmp = MKDEV(major, minor);
2747 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2748 *rdev = tmp;
2749 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2750 }
2751 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2752 return 0;
2753}
2754
2755static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2756{
8687b63a 2757 __be32 *p;
1da177e4
LT		 2758 int status = 0;
2759
2760 *res = 0;
2761 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2762 return -EIO;
2763 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2764 READ_BUF(8);
2765 READ64(*res);
2766 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2767 }
2768 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2769 return status;
2770}
2771
2772static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2773{
8687b63a 2774 __be32 *p;
1da177e4
LT		 2775 int status = 0;
2776
2777 *res = 0;
2778 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2779 return -EIO;
2780 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2781 READ_BUF(8);
2782 READ64(*res);
2783 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2784 }
2785 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2786 return status;
2787}
2788
2789static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2790{
8687b63a 2791 __be32 *p;
1da177e4
LT		 2792 int status = 0;
2793
2794 *res = 0;
2795 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2796 return -EIO;
2797 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2798 READ_BUF(8);
2799 READ64(*res);
2800 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2801 }
2802 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2803 return status;
2804}
2805
2806static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2807{
8687b63a 2808 __be32 *p;
1da177e4
LT		 2809
2810 *used = 0;
2811 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2812 return -EIO;
2813 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2814 READ_BUF(8);
2815 READ64(*used);
2816 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2817 }
2818 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2819 (unsigned long long)*used);
2820 return 0;
2821}
2822
2823static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2824{
8687b63a 2825 __be32 *p;
1da177e4
LT		 2826 uint64_t sec;
2827 uint32_t nsec;
2828
2829 READ_BUF(12);
2830 READ64(sec);
2831 READ32(nsec);
2832 time->tv_sec = (time_t)sec;
2833 time->tv_nsec = (long)nsec;
2834 return 0;
2835}
2836
2837static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2838{
2839 int status = 0;
2840
2841 time->tv_sec = 0;
2842 time->tv_nsec = 0;
2843 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2844 return -EIO;
2845 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2846 status = decode_attr_time(xdr, time);
2847 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2848 }
2849 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2850 return status;
2851}
2852
2853static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2854{
2855 int status = 0;
2856
2857 time->tv_sec = 0;
2858 time->tv_nsec = 0;
2859 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2860 return -EIO;
2861 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2862 status = decode_attr_time(xdr, time);
2863 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2864 }
2865 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2866 return status;
2867}
2868
2869static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2870{
2871 int status = 0;
2872
2873 time->tv_sec = 0;
2874 time->tv_nsec = 0;
2875 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2876 return -EIO;
2877 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2878 status = decode_attr_time(xdr, time);
2879 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2880 }
2881 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2882 return status;
2883}
2884
8687b63a 2885static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
1da177e4
LT		 2886{
2887 unsigned int attrwords = XDR_QUADLEN(attrlen);
2888 unsigned int nwords = xdr->p - savep;
2889
2890 if (unlikely(attrwords != nwords)) {
2891 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2892 __FUNCTION__,
2893 attrwords << 2,
2894 (attrwords < nwords) ? '<' : '>',
2895 nwords << 2);
2896 return -EIO;
2897 }
2898 return 0;
2899}
2900
2901static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2902{
8687b63a 2903 __be32 *p;
1da177e4
LT		 2904
2905 READ_BUF(20);
2906 READ32(cinfo->atomic);
2907 READ64(cinfo->before);
2908 READ64(cinfo->after);
2909 return 0;
2910}
2911
2912static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2913{
8687b63a 2914 __be32 *p;
1da177e4
LT		 2915 uint32_t supp, acc;
2916 int status;
2917
2918 status = decode_op_hdr(xdr, OP_ACCESS);
2919 if (status)
2920 return status;
2921 READ_BUF(8);
2922 READ32(supp);
2923 READ32(acc);
2924 access->supported = supp;
2925 access->access = acc;
2926 return 0;
2927}
2928
2929static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2930{
8687b63a 2931 __be32 *p;
1da177e4
LT		 2932 int status;
2933
2934 status = decode_op_hdr(xdr, OP_CLOSE);
2935 if (status)
2936 return status;
8ae20abd
TM		 2937 READ_BUF(NFS4_STATEID_SIZE);
2938 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 2939 return 0;
2940}
2941
2942static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2943{
8687b63a 2944 __be32 *p;
1da177e4
LT		 2945 int status;
2946
2947 status = decode_op_hdr(xdr, OP_COMMIT);
2948 if (status)
2949 return status;
2950 READ_BUF(8);
2951 COPYMEM(res->verf->verifier, 8);
2952 return 0;
2953}
2954
2955static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2956{
8687b63a 2957 __be32 *p;
1da177e4
LT		 2958 uint32_t bmlen;
2959 int status;
2960
2961 status = decode_op_hdr(xdr, OP_CREATE);
2962 if (status)
2963 return status;
2964 if ((status = decode_change_info(xdr, cinfo)))
2965 return status;
2966 READ_BUF(4);
2967 READ32(bmlen);
2968 READ_BUF(bmlen << 2);
2969 return 0;
2970}
2971
2972static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2973{
8687b63a 2974 __be32 *savep;
1da177e4
LT		 2975 uint32_t attrlen,
2976 bitmap[2] = {0};
2977 int status;
2978
2979 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2980 goto xdr_error;
2981 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2982 goto xdr_error;
2983 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2984 goto xdr_error;
2985 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2986 goto xdr_error;
2987 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2988 goto xdr_error;
2989 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2990 goto xdr_error;
2991 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2992 goto xdr_error;
2993 status = verify_attr_len(xdr, savep, attrlen);
2994xdr_error:
16c32b71 2995 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2996 return status;
2997}
2998
2999static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3000{
8687b63a 3001 __be32 *savep;
1da177e4
LT		 3002 uint32_t attrlen,
3003 bitmap[2] = {0};
3004 int status;
3005
3006 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3007 goto xdr_error;
3008 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3009 goto xdr_error;
3010 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3011 goto xdr_error;
3012
3013 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3014 goto xdr_error;
3015 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3016 goto xdr_error;
3017 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3018 goto xdr_error;
3019 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3020 goto xdr_error;
3021 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3022 goto xdr_error;
3023 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3024 goto xdr_error;
3025
3026 status = verify_attr_len(xdr, savep, attrlen);
3027xdr_error:
16c32b71 3028 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3029 return status;
3030}
3031
3032static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3033{
8687b63a 3034 __be32 *savep;
1da177e4
LT		 3035 uint32_t attrlen,
3036 bitmap[2] = {0};
3037 int status;
3038
3039 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3040 goto xdr_error;
3041 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3042 goto xdr_error;
3043 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3044 goto xdr_error;
3045
3046 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3047 goto xdr_error;
3048 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3049 goto xdr_error;
3050
3051 status = verify_attr_len(xdr, savep, attrlen);
3052xdr_error:
16c32b71 3053 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3054 return status;
3055}
3056
3057static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3058{
8687b63a 3059 __be32 *savep;
1da177e4
LT		 3060 uint32_t attrlen,
3061 bitmap[2] = {0},
3062 type;
3063 int status, fmode = 0;
99baf625 3064 uint64_t fileid;
1da177e4
LT		 3065
3066 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3067 goto xdr_error;
3068 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3069 goto xdr_error;
3070
3071 fattr->bitmap[0] = bitmap[0];
3072 fattr->bitmap[1] = bitmap[1];
3073
3074 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3075 goto xdr_error;
3076
3077
3078 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3079 goto xdr_error;
3080 fattr->type = nfs_type2fmt[type].nfs2type;
3081 fmode = nfs_type2fmt[type].mode;
3082
3083 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3084 goto xdr_error;
3085 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3086 goto xdr_error;
8b4bdcf8 3087 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
1da177e4
LT		 3088 goto xdr_error;
3089 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3090 goto xdr_error;
683b57b4 3091 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
7aaa0b3b 3092 struct nfs4_fs_locations,
683b57b4
TM		 3093 fattr))) != 0)
3094 goto xdr_error;
1da177e4
LT		 3095 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3096 goto xdr_error;
3097 fattr->mode |= fmode;
3098 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3099 goto xdr_error;
7539bbab 3100 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
1da177e4 3101 goto xdr_error;
7539bbab 3102 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
1da177e4
LT		 3103 goto xdr_error;
3104 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3105 goto xdr_error;
3106 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3107 goto xdr_error;
3108 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3109 goto xdr_error;
3110 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3111 goto xdr_error;
3112 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3113 goto xdr_error;
99baf625
MN		 3114 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3115 goto xdr_error;
3116 if (fattr->fileid == 0 && fileid != 0)
3117 fattr->fileid = fileid;
33801147 3118 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 3119 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4 3120xdr_error:
16c32b71 3121 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
1da177e4
LT		 3122 return status;
3123}
3124
3125
3126static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3127{
8687b63a 3128 __be32 *savep;
1da177e4
LT		 3129 uint32_t attrlen, bitmap[2];
3130 int status;
3131
3132 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3133 goto xdr_error;
3134 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3135 goto xdr_error;
3136 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3137 goto xdr_error;
3138
3139 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3140
3141 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3142 goto xdr_error;
3143 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3144 goto xdr_error;
3145 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3146 goto xdr_error;
3147 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3148 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3149 goto xdr_error;
3150 fsinfo->wtpref = fsinfo->wtmax;
3151
3152 status = verify_attr_len(xdr, savep, attrlen);
3153xdr_error:
16c32b71 3154 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3155 return status;
3156}
3157
3158static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3159{
8687b63a 3160 __be32 *p;
1da177e4
LT		 3161 uint32_t len;
3162 int status;
3163
9936781d
TM		 3164 /* Zero handle first to allow comparisons */
3165 memset(fh, 0, sizeof(*fh));
3166
1da177e4
LT		 3167 status = decode_op_hdr(xdr, OP_GETFH);
3168 if (status)
3169 return status;
1da177e4
LT		 3170
3171 READ_BUF(4);
3172 READ32(len);
3173 if (len > NFS4_FHSIZE)
3174 return -EIO;
3175 fh->size = len;
3176 READ_BUF(len);
3177 COPYMEM(fh->data, len);
3178 return 0;
3179}
3180
3181static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3182{
3183 int status;
3184
3185 status = decode_op_hdr(xdr, OP_LINK);
3186 if (status)
3187 return status;
3188 return decode_change_info(xdr, cinfo);
3189}
3190
3191/*
3192 * We create the owner, so we know a proper owner.id length is 4.
3193 */
911d1aaf 3194static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
1da177e4 3195{
911d1aaf 3196 uint64_t offset, length, clientid;
8687b63a 3197 __be32 *p;
911d1aaf 3198 uint32_t namelen, type;
1da177e4
LT		 3199
3200 READ_BUF(32);
911d1aaf
TM		 3201 READ64(offset);
3202 READ64(length);
3203 READ32(type);
3204 if (fl != NULL) {
3205 fl->fl_start = (loff_t)offset;
3206 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3207 if (length == ~(uint64_t)0)
3208 fl->fl_end = OFFSET_MAX;
3209 fl->fl_type = F_WRLCK;
3210 if (type & 1)
3211 fl->fl_type = F_RDLCK;
3212 fl->fl_pid = 0;
3213 }
3214 READ64(clientid);
1da177e4
LT		 3215 READ32(namelen);
3216 READ_BUF(namelen);
1da177e4
LT		 3217 return -NFS4ERR_DENIED;
3218}
3219
911d1aaf 3220static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
1da177e4 3221{
8687b63a 3222 __be32 *p;
1da177e4
LT		 3223 int status;
3224
3225 status = decode_op_hdr(xdr, OP_LOCK);
3226 if (status == 0) {
8ae20abd
TM		 3227 READ_BUF(NFS4_STATEID_SIZE);
3228 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4 3229 } else if (status == -NFS4ERR_DENIED)
911d1aaf 3230 return decode_lock_denied(xdr, NULL);
1da177e4
LT		 3231 return status;
3232}
3233
911d1aaf 3234static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
1da177e4
LT		 3235{
3236 int status;
3237 status = decode_op_hdr(xdr, OP_LOCKT);
3238 if (status == -NFS4ERR_DENIED)
911d1aaf 3239 return decode_lock_denied(xdr, res->denied);
1da177e4
LT		 3240 return status;
3241}
3242
911d1aaf 3243static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
1da177e4 3244{
8687b63a 3245 __be32 *p;
1da177e4
LT		 3246 int status;
3247
3248 status = decode_op_hdr(xdr, OP_LOCKU);
3249 if (status == 0) {
8ae20abd
TM		 3250 READ_BUF(NFS4_STATEID_SIZE);
3251 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3252 }
3253 return status;
3254}
3255
3256static int decode_lookup(struct xdr_stream *xdr)
3257{
3258 return decode_op_hdr(xdr, OP_LOOKUP);
3259}
3260
3261/* This is too sick! */
3262static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3263{
8687b63a 3264 __be32 *p;
1da177e4
LT		 3265 uint32_t limit_type, nblocks, blocksize;
3266
3267 READ_BUF(12);
3268 READ32(limit_type);
3269 switch (limit_type) {
3270 case 1:
3271 READ64(*maxsize);
3272 break;
3273 case 2:
3274 READ32(nblocks);
3275 READ32(blocksize);
3276 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3277 }
3278 return 0;
3279}
3280
3281static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3282{
8687b63a 3283 __be32 *p;
1da177e4
LT		 3284 uint32_t delegation_type;
3285
3286 READ_BUF(4);
3287 READ32(delegation_type);
3288 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3289 res->delegation_type = 0;
3290 return 0;
3291 }
8ae20abd
TM		 3292 READ_BUF(NFS4_STATEID_SIZE+4);
3293 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3294 READ32(res->do_recall);
3295 switch (delegation_type) {
3296 case NFS4_OPEN_DELEGATE_READ:
3297 res->delegation_type = FMODE_READ;
3298 break;
3299 case NFS4_OPEN_DELEGATE_WRITE:
3300 res->delegation_type = FMODE_WRITE|FMODE_READ;
3301 if (decode_space_limit(xdr, &res->maxsize) < 0)
3302 return -EIO;
3303 }
7539bbab 3304 return decode_ace(xdr, NULL, res->server->nfs_client);
1da177e4
LT		 3305}
3306
3307static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3308{
8687b63a 3309 __be32 *p;
aa53ed54 3310 uint32_t savewords, bmlen, i;
1da177e4
LT		 3311 int status;
3312
3313 status = decode_op_hdr(xdr, OP_OPEN);
3314 if (status)
3315 return status;
8ae20abd
TM		 3316 READ_BUF(NFS4_STATEID_SIZE);
3317 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3318
3319 decode_change_info(xdr, &res->cinfo);
3320
3321 READ_BUF(8);
3322 READ32(res->rflags);
3323 READ32(bmlen);
3324 if (bmlen > 10)
3325 goto xdr_error;
3326
3327 READ_BUF(bmlen << 2);
aa53ed54
JL		 3328 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3329 for (i = 0; i < savewords; ++i)
3330 READ32(res->attrset[i]);
3331 for (; i < NFS4_BITMAP_SIZE; i++)
3332 res->attrset[i] = 0;
3333
1da177e4
LT		 3334 return decode_delegation(xdr, res);
3335xdr_error:
16c32b71 3336 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
1da177e4
LT		 3337 return -EIO;
3338}
3339
3340static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3341{
8687b63a 3342 __be32 *p;
1da177e4
LT		 3343 int status;
3344
3345 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3346 if (status)
3347 return status;
8ae20abd
TM		 3348 READ_BUF(NFS4_STATEID_SIZE);
3349 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3350 return 0;
3351}
3352
3353static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3354{
8687b63a 3355 __be32 *p;
1da177e4
LT		 3356 int status;
3357
3358 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3359 if (status)
3360 return status;
8ae20abd
TM		 3361 READ_BUF(NFS4_STATEID_SIZE);
3362 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3363 return 0;
3364}
3365
3366static int decode_putfh(struct xdr_stream *xdr)
3367{
3368 return decode_op_hdr(xdr, OP_PUTFH);
3369}
3370
3371static int decode_putrootfh(struct xdr_stream *xdr)
3372{
3373 return decode_op_hdr(xdr, OP_PUTROOTFH);
3374}
3375
3376static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3377{
3378 struct kvec *iov = req->rq_rcv_buf.head;
8687b63a 3379 __be32 *p;
1da177e4
LT		 3380 uint32_t count, eof, recvd, hdrlen;
3381 int status;
3382
3383 status = decode_op_hdr(xdr, OP_READ);
3384 if (status)
3385 return status;
3386 READ_BUF(8);
3387 READ32(eof);
3388 READ32(count);
3389 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3390 recvd = req->rq_rcv_buf.len - hdrlen;
3391 if (count > recvd) {
3392 printk(KERN_WARNING "NFS: server cheating in read reply: "
3393 "count %u > recvd %u\n", count, recvd);
3394 count = recvd;
3395 eof = 0;
3396 }
3397 xdr_read_pages(xdr, count);
3398 res->eof = eof;
3399 res->count = count;
3400 return 0;
3401}
3402
3403static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3404{
3405 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3406 struct page *page = *rcvbuf->pages;
3407 struct kvec *iov = rcvbuf->head;
3408 unsigned int nr, pglen = rcvbuf->page_len;
8687b63a 3409 __be32 *end, *entry, *p, *kaddr;
e8896495 3410 uint32_t len, attrlen, xlen;
1da177e4
LT		 3411 int hdrlen, recvd, status;
3412
3413 status = decode_op_hdr(xdr, OP_READDIR);
3414 if (status)
3415 return status;
3416 READ_BUF(8);
3417 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3418 dprintk("%s: verifier = 0x%x%x\n",
3419 __FUNCTION__,
3420 ((u32 *)readdir->verifier.data)[0],
3421 ((u32 *)readdir->verifier.data)[1]);
3422
1da177e4
LT		 3423
3424 hdrlen = (char *) p - (char *) iov->iov_base;
3425 recvd = rcvbuf->len - hdrlen;
3426 if (pglen > recvd)
3427 pglen = recvd;
3428 xdr_read_pages(xdr, pglen);
3429
3430 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
8687b63a 3431 kaddr = p = kmap_atomic(page, KM_USER0);
e8896495 3432 end = p + ((pglen + readdir->pgbase) >> 2);
1da177e4
LT		 3433 entry = p;
3434 for (nr = 0; *p++; nr++) {
e8896495 3435 if (end - p < 3)
1da177e4 3436 goto short_pkt;
eadf4598 3437 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3438 p += 2; /* cookie */
3439 len = ntohl(*p++); /* filename length */
3440 if (len > NFS4_MAXNAMLEN) {
3441 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3442 goto err_unmap;
3443 }
e8896495
DH		 3444 xlen = XDR_QUADLEN(len);
3445 if (end - p < xlen + 1)
1da177e4 3446 goto short_pkt;
e8896495
DH		 3447 dprintk("filename = %*s\n", len, (char *)p);
3448 p += xlen;
1da177e4 3449 len = ntohl(*p++); /* bitmap length */
e8896495 3450 if (end - p < len + 1)
1da177e4 3451 goto short_pkt;
e8896495 3452 p += len;
1da177e4 3453 attrlen = XDR_QUADLEN(ntohl(*p++));
e8896495 3454 if (end - p < attrlen + 2)
1da177e4 3455 goto short_pkt;
e8896495 3456 p += attrlen; /* attributes */
1da177e4
LT		 3457 entry = p;
3458 }
3459 if (!nr && (entry[0] != 0 || entry[1] == 0))
3460 goto short_pkt;
3461out:
3462 kunmap_atomic(kaddr, KM_USER0);
3463 return 0;
3464short_pkt:
eadf4598 3465 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3466 entry[0] = entry[1] = 0;
3467 /* truncate listing ? */
3468 if (!nr) {
3469 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3470 entry[1] = 1;
3471 }
3472 goto out;
3473err_unmap:
3474 kunmap_atomic(kaddr, KM_USER0);
3475 return -errno_NFSERR_IO;
3476}
3477
3478static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3479{
3480 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3481 struct kvec *iov = rcvbuf->head;
3482 int hdrlen, len, recvd;
8687b63a 3483 __be32 *p;
1da177e4
LT		 3484 char *kaddr;
3485 int status;
3486
3487 status = decode_op_hdr(xdr, OP_READLINK);
3488 if (status)
3489 return status;
3490
3491 /* Convert length of symlink */
3492 READ_BUF(4);
3493 READ32(len);
3494 if (len >= rcvbuf->page_len || len <= 0) {
3495 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3496 return -ENAMETOOLONG;
3497 }
3498 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3499 recvd = req->rq_rcv_buf.len - hdrlen;
3500 if (recvd < len) {
3501 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3502 "count %u > recvd %u\n", len, recvd);
3503 return -EIO;
3504 }
3505 xdr_read_pages(xdr, len);
3506 /*
3507 * The XDR encode routine has set things up so that
3508 * the link text will be copied directly into the
3509 * buffer. We just have to do overflow-checking,
3510 * and and null-terminate the text (the VFS expects
3511 * null-termination).
3512 */
3513 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3514 kaddr[len+rcvbuf->page_base] = '\0';
3515 kunmap_atomic(kaddr, KM_USER0);
3516 return 0;
3517}
3518
3519static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3520{
3521 int status;
3522
3523 status = decode_op_hdr(xdr, OP_REMOVE);
3524 if (status)
3525 goto out;
3526 status = decode_change_info(xdr, cinfo);
3527out:
3528 return status;
3529}
3530
3531static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3532 struct nfs4_change_info *new_cinfo)
3533{
3534 int status;
3535
3536 status = decode_op_hdr(xdr, OP_RENAME);
3537 if (status)
3538 goto out;
3539 if ((status = decode_change_info(xdr, old_cinfo)))
3540 goto out;
3541 status = decode_change_info(xdr, new_cinfo);
3542out:
3543 return status;
3544}
3545
3546static int decode_renew(struct xdr_stream *xdr)
3547{
3548 return decode_op_hdr(xdr, OP_RENEW);
3549}
3550
56ae19f3
TM		 3551static int
3552decode_restorefh(struct xdr_stream *xdr)
3553{
3554 return decode_op_hdr(xdr, OP_RESTOREFH);
3555}
3556
029d105e
BF		 3557static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3558 size_t *acl_len)
3559{
8687b63a 3560 __be32 *savep;
029d105e
BF		 3561 uint32_t attrlen,
3562 bitmap[2] = {0};
3563 struct kvec *iov = req->rq_rcv_buf.head;
3564 int status;
3565
3566 *acl_len = 0;
3567 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3568 goto out;
3569 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3570 goto out;
3571 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3572 goto out;
3573
3574 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3575 return -EIO;
3576 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3577 int hdrlen, recvd;
3578
3579 /* We ignore &savep and don't do consistency checks on
3580 * the attr length. Let userspace figure it out.... */
3581 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3582 recvd = req->rq_rcv_buf.len - hdrlen;
3583 if (attrlen > recvd) {
3584 printk(KERN_WARNING "NFS: server cheating in getattr"
3585 " acl reply: attrlen %u > recvd %u\n",
3586 attrlen, recvd);
3587 return -EINVAL;
3588 }
c04871e6 3589 xdr_read_pages(xdr, attrlen);
029d105e 3590 *acl_len = attrlen;
8c233cf9
BF		 3591 } else
3592 status = -EOPNOTSUPP;
029d105e
BF		 3593
3594out:
3595 return status;
3596}
3597
1da177e4
LT		 3598static int
3599decode_savefh(struct xdr_stream *xdr)
3600{
3601 return decode_op_hdr(xdr, OP_SAVEFH);
3602}
3603
3604static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3605{
8687b63a 3606 __be32 *p;
1da177e4
LT		 3607 uint32_t bmlen;
3608 int status;
3609
3610
3611 status = decode_op_hdr(xdr, OP_SETATTR);
3612 if (status)
3613 return status;
3614 READ_BUF(4);
3615 READ32(bmlen);
3616 READ_BUF(bmlen << 2);
3617 return 0;
3618}
3619
adfa6f98 3620static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
1da177e4 3621{
8687b63a 3622 __be32 *p;
1da177e4
LT		 3623 uint32_t opnum;
3624 int32_t nfserr;
3625
3626 READ_BUF(8);
3627 READ32(opnum);
3628 if (opnum != OP_SETCLIENTID) {
3629 printk(KERN_NOTICE
3630 "nfs4_decode_setclientid: Server returned operation"
3631 " %d\n", opnum);
3632 return -EIO;
3633 }
3634 READ32(nfserr);
3635 if (nfserr == NFS_OK) {
8ae20abd 3636 READ_BUF(8 + NFS4_VERIFIER_SIZE);
1da177e4 3637 READ64(clp->cl_clientid);
8ae20abd 3638 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 3639 } else if (nfserr == NFSERR_CLID_INUSE) {
3640 uint32_t len;
3641
3642 /* skip netid string */
3643 READ_BUF(4);
3644 READ32(len);
3645 READ_BUF(len);
3646
3647 /* skip uaddr string */
3648 READ_BUF(4);
3649 READ32(len);
3650 READ_BUF(len);
3651 return -NFSERR_CLID_INUSE;
3652 } else
0a8ea437 3653 return -nfs4_stat_to_errno(nfserr);
1da177e4
LT		 3654
3655 return 0;
3656}
3657
3658static int decode_setclientid_confirm(struct xdr_stream *xdr)
3659{
3660 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3661}
3662
3663static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3664{
8687b63a 3665 __be32 *p;
1da177e4
LT		 3666 int status;
3667
3668 status = decode_op_hdr(xdr, OP_WRITE);
3669 if (status)
3670 return status;
3671
3672 READ_BUF(16);
3673 READ32(res->count);
3674 READ32(res->verf->committed);
3675 COPYMEM(res->verf->verifier, 8);
3676 return 0;
3677}
3678
3679static int decode_delegreturn(struct xdr_stream *xdr)
3680{
3681 return decode_op_hdr(xdr, OP_DELEGRETURN);
3682}
3683
3684/*
3685 * Decode OPEN_DOWNGRADE response
3686 */
8687b63a 3687static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
1da177e4
LT		 3688{
3689 struct xdr_stream xdr;
3690 struct compound_hdr hdr;
3691 int status;
3692
3693 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3694 status = decode_compound_hdr(&xdr, &hdr);
3695 if (status)
3696 goto out;
3697 status = decode_putfh(&xdr);
3698 if (status)
3699 goto out;
3700 status = decode_open_downgrade(&xdr, res);
516a6af6
TM		 3701 if (status != 0)
3702 goto out;
3703 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3704out:
3705 return status;
3706}
3707
3708/*
3709 * END OF "GENERIC" DECODE ROUTINES.
3710 */
3711
3712/*
3713 * Decode ACCESS response
3714 */
8687b63a 3715static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
1da177e4
LT		 3716{
3717 struct xdr_stream xdr;
3718 struct compound_hdr hdr;
3719 int status;
3720
3721 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3722 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3723 goto out;
3724 if ((status = decode_putfh(&xdr)) == 0)
3725 status = decode_access(&xdr, res);
3726out:
3727 return status;
3728}
3729
3730/*
3731 * Decode LOOKUP response
3732 */
8687b63a 3733static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
1da177e4
LT		 3734{
3735 struct xdr_stream xdr;
3736 struct compound_hdr hdr;
3737 int status;
3738
3739 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3740 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3741 goto out;
3742 if ((status = decode_putfh(&xdr)) != 0)
3743 goto out;
3744 if ((status = decode_lookup(&xdr)) != 0)
3745 goto out;
3746 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3747 goto out;
3748 status = decode_getfattr(&xdr, res->fattr, res->server);
3749out:
3750 return status;
3751}
3752
3753/*
3754 * Decode LOOKUP_ROOT response
3755 */
8687b63a 3756static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
1da177e4
LT		 3757{
3758 struct xdr_stream xdr;
3759 struct compound_hdr hdr;
3760 int status;
3761
3762 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3763 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3764 goto out;
3765 if ((status = decode_putrootfh(&xdr)) != 0)
3766 goto out;
3767 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3768 status = decode_getfattr(&xdr, res->fattr, res->server);
3769out:
3770 return status;
3771}
3772
3773/*
3774 * Decode REMOVE response
3775 */
8687b63a 3776static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_remove_res *res)
1da177e4
LT		 3777{
3778 struct xdr_stream xdr;
3779 struct compound_hdr hdr;
3780 int status;
3781
3782 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3783 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3784 goto out;
16e42959
TM		 3785 if ((status = decode_putfh(&xdr)) != 0)
3786 goto out;
3787 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3788 goto out;
3789 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3790out:
3791 return status;
3792}
3793
3794/*
3795 * Decode RENAME response
3796 */
8687b63a 3797static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
1da177e4
LT		 3798{
3799 struct xdr_stream xdr;
3800 struct compound_hdr hdr;
3801 int status;
3802
3803 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3804 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3805 goto out;
3806 if ((status = decode_putfh(&xdr)) != 0)
3807 goto out;
3808 if ((status = decode_savefh(&xdr)) != 0)
3809 goto out;
3810 if ((status = decode_putfh(&xdr)) != 0)
3811 goto out;
6caf2c82
TM		 3812 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3813 goto out;
3814 /* Current FH is target directory */
3815 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3816 goto out;
3817 if ((status = decode_restorefh(&xdr)) != 0)
3818 goto out;
3819 decode_getfattr(&xdr, res->old_fattr, res->server);
1da177e4
LT		 3820out:
3821 return status;
3822}
3823
3824/*
3825 * Decode LINK response
3826 */
8687b63a 3827static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
1da177e4
LT		 3828{
3829 struct xdr_stream xdr;
3830 struct compound_hdr hdr;
3831 int status;
3832
3833 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3834 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3835 goto out;
3836 if ((status = decode_putfh(&xdr)) != 0)
3837 goto out;
3838 if ((status = decode_savefh(&xdr)) != 0)
3839 goto out;
3840 if ((status = decode_putfh(&xdr)) != 0)
3841 goto out;
91ba2eee
TM		 3842 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3843 goto out;
3844 /*
3845 * Note order: OP_LINK leaves the directory as the current
3846 * filehandle.
3847 */
3848 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3849 goto out;
3850 if ((status = decode_restorefh(&xdr)) != 0)
3851 goto out;
3852 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3853out:
3854 return status;
3855}
3856
3857/*
3858 * Decode CREATE response
3859 */
8687b63a 3860static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
1da177e4
LT		 3861{
3862 struct xdr_stream xdr;
3863 struct compound_hdr hdr;
3864 int status;
3865
3866 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3867 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3868 goto out;
3869 if ((status = decode_putfh(&xdr)) != 0)
3870 goto out;
56ae19f3
TM		 3871 if ((status = decode_savefh(&xdr)) != 0)
3872 goto out;
1da177e4
LT		 3873 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3874 goto out;
3875 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3876 goto out;
56ae19f3
TM		 3877 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3878 goto out;
3879 if ((status = decode_restorefh(&xdr)) != 0)
3880 goto out;
3881 decode_getfattr(&xdr, res->dir_fattr, res->server);
1da177e4
LT		 3882out:
3883 return status;
3884}
3885
3886/*
3887 * Decode SYMLINK response
3888 */
8687b63a 3889static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
1da177e4
LT		 3890{
3891 return nfs4_xdr_dec_create(rqstp, p, res);
3892}
3893
3894/*
3895 * Decode GETATTR response
3896 */
8687b63a 3897static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
1da177e4
LT		 3898{
3899 struct xdr_stream xdr;
3900 struct compound_hdr hdr;
3901 int status;
3902
3903 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3904 status = decode_compound_hdr(&xdr, &hdr);
3905 if (status)
3906 goto out;
3907 status = decode_putfh(&xdr);
3908 if (status)
3909 goto out;
3910 status = decode_getfattr(&xdr, res->fattr, res->server);
3911out:
3912 return status;
3913
3914}
3915
23ec6965
BF		 3916/*
3917 * Encode an SETACL request
3918 */
3919static int
8687b63a 3920nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
23ec6965
BF		 3921{
3922 struct xdr_stream xdr;
3923 struct compound_hdr hdr = {
3924 .nops = 2,
3925 };
3926 int status;
3927
3928 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3929 encode_compound_hdr(&xdr, &hdr);
3930 status = encode_putfh(&xdr, args->fh);
3931 if (status)
3932 goto out;
3933 status = encode_setacl(&xdr, args);
3934out:
3935 return status;
3936}
3937/*
3938 * Decode SETACL response
3939 */
3940static int
8687b63a 3941nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
23ec6965
BF		 3942{
3943 struct xdr_stream xdr;
3944 struct compound_hdr hdr;
3945 int status;
3946
3947 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3948 status = decode_compound_hdr(&xdr, &hdr);
3949 if (status)
3950 goto out;
3951 status = decode_putfh(&xdr);
3952 if (status)
3953 goto out;
3954 status = decode_setattr(&xdr, res);
3955out:
3956 return status;
3957}
1da177e4 3958
029d105e
BF		 3959/*
3960 * Decode GETACL response
3961 */
3962static int
8687b63a 3963nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
029d105e
BF		 3964{
3965 struct xdr_stream xdr;
3966 struct compound_hdr hdr;
3967 int status;
3968
3969 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3970 status = decode_compound_hdr(&xdr, &hdr);
3971 if (status)
3972 goto out;
3973 status = decode_putfh(&xdr);
3974 if (status)
3975 goto out;
3976 status = decode_getacl(&xdr, rqstp, acl_len);
3977
3978out:
3979 return status;
3980}
3981
1da177e4
LT		 3982/*
3983 * Decode CLOSE response
3984 */
8687b63a 3985static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
1da177e4
LT		 3986{
3987 struct xdr_stream xdr;
3988 struct compound_hdr hdr;
3989 int status;
3990
3991 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3992 status = decode_compound_hdr(&xdr, &hdr);
3993 if (status)
3994 goto out;
3995 status = decode_putfh(&xdr);
3996 if (status)
3997 goto out;
3998 status = decode_close(&xdr, res);
516a6af6
TM		 3999 if (status != 0)
4000 goto out;
4001 /*
4002 * Note: Server may do delete on close for this file
4003 * in which case the getattr call will fail with
4004 * an ESTALE error. Shouldn't be a problem,
4005 * though, since fattr->valid will remain unset.
4006 */
4007 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4008out:
4009 return status;
4010}
4011
4012/*
4013 * Decode OPEN response
4014 */
8687b63a 4015static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
1da177e4
LT		 4016{
4017 struct xdr_stream xdr;
4018 struct compound_hdr hdr;
4019 int status;
4020
4021 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4022 status = decode_compound_hdr(&xdr, &hdr);
4023 if (status)
4024 goto out;
4025 status = decode_putfh(&xdr);
4026 if (status)
4027 goto out;
56ae19f3
TM		 4028 status = decode_savefh(&xdr);
4029 if (status)
4030 goto out;
1da177e4
LT		 4031 status = decode_open(&xdr, res);
4032 if (status)
4033 goto out;
9936781d 4034 if (decode_getfh(&xdr, &res->fh) != 0)
1da177e4 4035 goto out;
56ae19f3
TM		 4036 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4037 goto out;
365c8f58 4038 if (decode_restorefh(&xdr) != 0)
56ae19f3
TM		 4039 goto out;
4040 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 4041out:
4042 return status;
4043}
4044
4045/*
4046 * Decode OPEN_CONFIRM response
4047 */
8687b63a 4048static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
1da177e4
LT		 4049{
4050 struct xdr_stream xdr;
4051 struct compound_hdr hdr;
4052 int status;
4053
4054 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4055 status = decode_compound_hdr(&xdr, &hdr);
4056 if (status)
4057 goto out;
4058 status = decode_putfh(&xdr);
4059 if (status)
4060 goto out;
4061 status = decode_open_confirm(&xdr, res);
4062out:
4063 return status;
4064}
4065
4066/*
4067 * Decode OPEN response
4068 */
8687b63a 4069static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
1da177e4
LT		 4070{
4071 struct xdr_stream xdr;
4072 struct compound_hdr hdr;
4073 int status;
4074
4075 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4076 status = decode_compound_hdr(&xdr, &hdr);
4077 if (status)
4078 goto out;
4079 status = decode_putfh(&xdr);
4080 if (status)
4081 goto out;
4082 status = decode_open(&xdr, res);
864472e9
TM		 4083 if (status)
4084 goto out;
4085 decode_getfattr(&xdr, res->f_attr, res->server);
1da177e4
LT		 4086out:
4087 return status;
4088}
4089
4090/*
4091 * Decode SETATTR response
4092 */
8687b63a 4093static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
1da177e4
LT		 4094{
4095 struct xdr_stream xdr;
4096 struct compound_hdr hdr;
4097 int status;
4098
4099 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4100 status = decode_compound_hdr(&xdr, &hdr);
4101 if (status)
4102 goto out;
4103 status = decode_putfh(&xdr);
4104 if (status)
4105 goto out;
4106 status = decode_setattr(&xdr, res);
4107 if (status)
4108 goto out;
4109 status = decode_getfattr(&xdr, res->fattr, res->server);
4110 if (status == NFS4ERR_DELAY)
4111 status = 0;
4112out:
4113 return status;
4114}
4115
4116/*
4117 * Decode LOCK response
4118 */
8687b63a 4119static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
1da177e4
LT		 4120{
4121 struct xdr_stream xdr;
4122 struct compound_hdr hdr;
4123 int status;
4124
4125 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4126 status = decode_compound_hdr(&xdr, &hdr);
4127 if (status)
4128 goto out;
4129 status = decode_putfh(&xdr);
4130 if (status)
4131 goto out;
4132 status = decode_lock(&xdr, res);
4133out:
4134 return status;
4135}
4136
4137/*
4138 * Decode LOCKT response
4139 */
8687b63a 4140static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
1da177e4
LT		 4141{
4142 struct xdr_stream xdr;
4143 struct compound_hdr hdr;
4144 int status;
4145
4146 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4147 status = decode_compound_hdr(&xdr, &hdr);
4148 if (status)
4149 goto out;
4150 status = decode_putfh(&xdr);
4151 if (status)
4152 goto out;
4153 status = decode_lockt(&xdr, res);
4154out:
4155 return status;
4156}
4157
4158/*
4159 * Decode LOCKU response
4160 */
8687b63a 4161static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
1da177e4
LT		 4162{
4163 struct xdr_stream xdr;
4164 struct compound_hdr hdr;
4165 int status;
4166
4167 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4168 status = decode_compound_hdr(&xdr, &hdr);
4169 if (status)
4170 goto out;
4171 status = decode_putfh(&xdr);
4172 if (status)
4173 goto out;
4174 status = decode_locku(&xdr, res);
4175out:
4176 return status;
4177}
4178
4179/*
4180 * Decode READLINK response
4181 */
8687b63a 4182static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
1da177e4
LT		 4183{
4184 struct xdr_stream xdr;
4185 struct compound_hdr hdr;
4186 int status;
4187
4188 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4189 status = decode_compound_hdr(&xdr, &hdr);
4190 if (status)
4191 goto out;
4192 status = decode_putfh(&xdr);
4193 if (status)
4194 goto out;
4195 status = decode_readlink(&xdr, rqstp);
4196out:
4197 return status;
4198}
4199
4200/*
4201 * Decode READDIR response
4202 */
8687b63a 4203static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
1da177e4
LT		 4204{
4205 struct xdr_stream xdr;
4206 struct compound_hdr hdr;
4207 int status;
4208
4209 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4210 status = decode_compound_hdr(&xdr, &hdr);
4211 if (status)
4212 goto out;
4213 status = decode_putfh(&xdr);
4214 if (status)
4215 goto out;
4216 status = decode_readdir(&xdr, rqstp, res);
4217out:
4218 return status;
4219}
4220
4221/*
4222 * Decode Read response
4223 */
8687b63a 4224static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
1da177e4
LT		 4225{
4226 struct xdr_stream xdr;
4227 struct compound_hdr hdr;
4228 int status;
4229
4230 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4231 status = decode_compound_hdr(&xdr, &hdr);
4232 if (status)
4233 goto out;
4234 status = decode_putfh(&xdr);
4235 if (status)
4236 goto out;
4237 status = decode_read(&xdr, rqstp, res);
4238 if (!status)
4239 status = res->count;
4240out:
4241 return status;
4242}
4243
4244/*
4245 * Decode WRITE response
4246 */
8687b63a 4247static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
1da177e4
LT		 4248{
4249 struct xdr_stream xdr;
4250 struct compound_hdr hdr;
4251 int status;
4252
4253 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4254 status = decode_compound_hdr(&xdr, &hdr);
4255 if (status)
4256 goto out;
4257 status = decode_putfh(&xdr);
4258 if (status)
4259 goto out;
4260 status = decode_write(&xdr, res);
4f9838c7
TM		 4261 if (status)
4262 goto out;
4263 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4264 if (!status)
4265 status = res->count;
4266out:
4267 return status;
4268}
4269
4270/*
4271 * Decode COMMIT response
4272 */
8687b63a 4273static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
1da177e4
LT		 4274{
4275 struct xdr_stream xdr;
4276 struct compound_hdr hdr;
4277 int status;
4278
4279 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4280 status = decode_compound_hdr(&xdr, &hdr);
4281 if (status)
4282 goto out;
4283 status = decode_putfh(&xdr);
4284 if (status)
4285 goto out;
4286 status = decode_commit(&xdr, res);
4f9838c7
TM		 4287 if (status)
4288 goto out;
4289 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4290out:
4291 return status;
4292}
4293
4294/*
4295 * FSINFO request
4296 */
8687b63a 4297static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
1da177e4
LT		 4298{
4299 struct xdr_stream xdr;
4300 struct compound_hdr hdr;
4301 int status;
4302
4303 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4304 status = decode_compound_hdr(&xdr, &hdr);
4305 if (!status)
4306 status = decode_putfh(&xdr);
4307 if (!status)
4308 status = decode_fsinfo(&xdr, fsinfo);
4309 if (!status)
0a8ea437 4310 status = -nfs4_stat_to_errno(hdr.status);
1da177e4
LT		 4311 return status;
4312}
4313
4314/*
4315 * PATHCONF request
4316 */
8687b63a 4317static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
1da177e4
LT		 4318{
4319 struct xdr_stream xdr;
4320 struct compound_hdr hdr;
4321 int status;
4322
4323 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4324 status = decode_compound_hdr(&xdr, &hdr);
4325 if (!status)
4326 status = decode_putfh(&xdr);
4327 if (!status)
4328 status = decode_pathconf(&xdr, pathconf);
4329 return status;
4330}
4331
4332/*
4333 * STATFS request
4334 */
8687b63a 4335static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
1da177e4
LT		 4336{
4337 struct xdr_stream xdr;
4338 struct compound_hdr hdr;
4339 int status;
4340
4341 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4342 status = decode_compound_hdr(&xdr, &hdr);
4343 if (!status)
4344 status = decode_putfh(&xdr);
4345 if (!status)
4346 status = decode_statfs(&xdr, fsstat);
4347 return status;
4348}
4349
4350/*
4351 * GETATTR_BITMAP request
4352 */
8687b63a 4353static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
1da177e4
LT		 4354{
4355 struct xdr_stream xdr;
4356 struct compound_hdr hdr;
4357 int status;
4358
4359 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4360 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4361 goto out;
4362 if ((status = decode_putfh(&xdr)) != 0)
4363 goto out;
4364 status = decode_server_caps(&xdr, res);
4365out:
4366 return status;
4367}
4368
4369/*
4370 * Decode RENEW response
4371 */
8687b63a 4372static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
1da177e4
LT		 4373{
4374 struct xdr_stream xdr;
4375 struct compound_hdr hdr;
4376 int status;
4377
4378 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4379 status = decode_compound_hdr(&xdr, &hdr);
4380 if (!status)
4381 status = decode_renew(&xdr);
4382 return status;
4383}
4384
4385/*
4386 * a SETCLIENTID request
4387 */
8687b63a 4388static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
adfa6f98 4389 struct nfs_client *clp)
1da177e4
LT		 4390{
4391 struct xdr_stream xdr;
4392 struct compound_hdr hdr;
4393 int status;
4394
4395 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4396 status = decode_compound_hdr(&xdr, &hdr);
4397 if (!status)
4398 status = decode_setclientid(&xdr, clp);
4399 if (!status)
0a8ea437 4400 status = -nfs4_stat_to_errno(hdr.status);
1da177e4
LT		 4401 return status;
4402}
4403
4404/*
4405 * a SETCLIENTID_CONFIRM request
4406 */
8687b63a 4407static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
1da177e4
LT		 4408{
4409 struct xdr_stream xdr;
4410 struct compound_hdr hdr;
4411 int status;
4412
4413 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4414 status = decode_compound_hdr(&xdr, &hdr);
4415 if (!status)
4416 status = decode_setclientid_confirm(&xdr);
4417 if (!status)
4418 status = decode_putrootfh(&xdr);
4419 if (!status)
4420 status = decode_fsinfo(&xdr, fsinfo);
4421 if (!status)
0a8ea437 4422 status = -nfs4_stat_to_errno(hdr.status);
1da177e4
LT		 4423 return status;
4424}
4425
4426/*
4427 * DELEGRETURN request
4428 */
8687b63a 4429static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
1da177e4
LT		 4430{
4431 struct xdr_stream xdr;
4432 struct compound_hdr hdr;
4433 int status;
4434
4435 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4436 status = decode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 4437 if (status != 0)
4438 goto out;
4439 status = decode_putfh(&xdr);
4440 if (status != 0)
4441 goto out;
4442 status = decode_delegreturn(&xdr);
4443 decode_getfattr(&xdr, res->fattr, res->server);
4444out:
1da177e4
LT		 4445 return status;
4446}
4447
683b57b4
TM		 4448/*
4449 * FS_LOCATIONS request
4450 */
8687b63a 4451static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
683b57b4
TM		 4452{
4453 struct xdr_stream xdr;
4454 struct compound_hdr hdr;
4455 int status;
4456
4457 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4458 status = decode_compound_hdr(&xdr, &hdr);
4459 if (status != 0)
4460 goto out;
4461 if ((status = decode_putfh(&xdr)) != 0)
4462 goto out;
4463 if ((status = decode_lookup(&xdr)) != 0)
4464 goto out;
4465 xdr_enter_page(&xdr, PAGE_SIZE);
4466 status = decode_getfattr(&xdr, &res->fattr, res->server);
4467out:
4468 return status;
4469}
4470
0dbb4c67 4471__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
1da177e4
LT		 4472{
4473 uint32_t bitmap[2] = {0};
4474 uint32_t len;
4475
4476 if (!*p++) {
4477 if (!*p)
4478 return ERR_PTR(-EAGAIN);
4479 entry->eof = 1;
4480 return ERR_PTR(-EBADCOOKIE);
4481 }
4482
4483 entry->prev_cookie = entry->cookie;
4484 p = xdr_decode_hyper(p, &entry->cookie);
4485 entry->len = ntohl(*p++);
4486 entry->name = (const char *) p;
4487 p += XDR_QUADLEN(entry->len);
4488
4489 /*
4490 * In case the server doesn't return an inode number,
4491 * we fake one here. (We don't use inode number 0,
4492 * since glibc seems to choke on it...)
4493 */
4494 entry->ino = 1;
4495
4496 len = ntohl(*p++); /* bitmap length */
4497 if (len-- > 0) {
4498 bitmap[0] = ntohl(*p++);
4499 if (len-- > 0) {
4500 bitmap[1] = ntohl(*p++);
4501 p += len;
4502 }
4503 }
4504 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4505 if (len > 0) {
97d312d0
MN		 4506 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4507 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4508 /* Ignore the return value of rdattr_error for now */
4509 p++;
4510 len--;
4511 }
1da177e4
LT		 4512 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4513 xdr_decode_hyper(p, &entry->ino);
4514 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4515 xdr_decode_hyper(p, &entry->ino);
4516 p += len;
4517 }
4518
4519 entry->eof = !p[0] && p[1];
4520 return p;
4521}
4522
4523/*
4524 * We need to translate between nfs status return values and
4525 * the local errno values which may not be the same.
4526 */
4527static struct {
4528 int stat;
4529 int errno;
4530} nfs_errtbl[] = {
4531 { NFS4_OK, 0 },
4532 { NFS4ERR_PERM, EPERM },
4533 { NFS4ERR_NOENT, ENOENT },
4534 { NFS4ERR_IO, errno_NFSERR_IO },
4535 { NFS4ERR_NXIO, ENXIO },
4536 { NFS4ERR_ACCESS, EACCES },
4537 { NFS4ERR_EXIST, EEXIST },
4538 { NFS4ERR_XDEV, EXDEV },
4539 { NFS4ERR_NOTDIR, ENOTDIR },
4540 { NFS4ERR_ISDIR, EISDIR },
4541 { NFS4ERR_INVAL, EINVAL },
4542 { NFS4ERR_FBIG, EFBIG },
4543 { NFS4ERR_NOSPC, ENOSPC },
4544 { NFS4ERR_ROFS, EROFS },
4545 { NFS4ERR_MLINK, EMLINK },
4546 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4547 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4548 { NFS4ERR_DQUOT, EDQUOT },
4549 { NFS4ERR_STALE, ESTALE },
4550 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4551 { NFS4ERR_BADOWNER, EINVAL },
4552 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4553 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4554 { NFS4ERR_NOTSUPP, ENOTSUPP },
4555 { NFS4ERR_TOOSMALL, ETOOSMALL },
4556 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4557 { NFS4ERR_BADTYPE, EBADTYPE },
4558 { NFS4ERR_LOCKED, EAGAIN },
4559 { NFS4ERR_RESOURCE, EREMOTEIO },
4560 { NFS4ERR_SYMLINK, ELOOP },
4561 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4562 { NFS4ERR_DEADLOCK, EDEADLK },
4563 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4564 * to be handled by a
4565 * middle-layer.
4566 */
4567 { -1, EIO }
4568};
4569
4570/*
4571 * Convert an NFS error code to a local one.
4572 * This one is used jointly by NFSv2 and NFSv3.
4573 */
4574static int
0a8ea437 4575nfs4_stat_to_errno(int stat)
1da177e4
LT		 4576{
4577 int i;
4578 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4579 if (nfs_errtbl[i].stat == stat)
4580 return nfs_errtbl[i].errno;
4581 }
4582 if (stat <= 10000 || stat > 10100) {
4583 /* The server is looney tunes. */
4584 return ESERVERFAULT;
4585 }
4586 /* If we cannot translate the error, the recovery routines should
4587 * handle it.
4588 * Note: remaining NFSv4 error codes have values > 10000, so should
4589 * not conflict with native Linux error codes.
4590 */
4591 return stat;
4592}
4593
1da177e4
LT		 4594#define PROC(proc, argtype, restype) \
4595[NFSPROC4_CLNT_##proc] = { \
4596 .p_proc = NFSPROC4_COMPOUND, \
4597 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4598 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
2bea90d4
CL		 4599 .p_arglen = NFS4_##argtype##_sz, \
4600 .p_replen = NFS4_##restype##_sz, \
cc0175c1
CL		 4601 .p_statidx = NFSPROC4_CLNT_##proc, \
4602 .p_name = #proc, \
1da177e4
LT		 4603 }
4604
4605struct rpc_procinfo nfs4_procedures[] = {
4606 PROC(READ, enc_read, dec_read),
4607 PROC(WRITE, enc_write, dec_write),
4608 PROC(COMMIT, enc_commit, dec_commit),
4609 PROC(OPEN, enc_open, dec_open),
4610 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4611 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4612 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4613 PROC(CLOSE, enc_close, dec_close),
4614 PROC(SETATTR, enc_setattr, dec_setattr),
4615 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4616 PROC(RENEW, enc_renew, dec_renew),
4617 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4618 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4619 PROC(LOCK, enc_lock, dec_lock),
4620 PROC(LOCKT, enc_lockt, dec_lockt),
4621 PROC(LOCKU, enc_locku, dec_locku),
4622 PROC(ACCESS, enc_access, dec_access),
4623 PROC(GETATTR, enc_getattr, dec_getattr),
4624 PROC(LOOKUP, enc_lookup, dec_lookup),
4625 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4626 PROC(REMOVE, enc_remove, dec_remove),
4627 PROC(RENAME, enc_rename, dec_rename),
4628 PROC(LINK, enc_link, dec_link),
4629 PROC(SYMLINK, enc_symlink, dec_symlink),
4630 PROC(CREATE, enc_create, dec_create),
4631 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4632 PROC(STATFS, enc_statfs, dec_statfs),
4633 PROC(READLINK, enc_readlink, dec_readlink),
4634 PROC(READDIR, enc_readdir, dec_readdir),
4635 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4636 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4637 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4638 PROC(SETACL, enc_setacl, dec_setacl),
683b57b4 4639 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
1da177e4
LT		 4640};
4641
4642struct rpc_version nfs_version4 = {
4643 .number = 4,
e8c96f8c 4644 .nrprocs = ARRAY_SIZE(nfs4_procedures),
1da177e4
LT		 4645 .procs = nfs4_procedures
4646};
4647
4648/*
4649 * Local variables:
4650 * c-basic-offset: 8
4651 * End:
4652 */
Linux kernel - Deliverables
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