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