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NFSv4: Follow a referral
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
CommitLineData
1da177e4
LT		 1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/slab.h>
42#include <linux/utsname.h>
43#include <linux/errno.h>
44#include <linux/string.h>
45#include <linux/in.h>
46#include <linux/pagemap.h>
47#include <linux/proc_fs.h>
48#include <linux/kdev_t.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/nfs.h>
51#include <linux/nfs4.h>
52#include <linux/nfs_fs.h>
53#include <linux/nfs_idmap.h>
4ce79717 54#include "nfs4_fs.h"
1da177e4
LT		 55
56#define NFSDBG_FACILITY NFSDBG_XDR
57
58/* Mapping from NFS error code to "errno" error code. */
59#define errno_NFSERR_IO EIO
60
61static int nfs_stat_to_errno(int);
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))
96928206
BF		 90/* This is based on getfattr, which uses the most attributes: */
91#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
92 3 + 3 + 3 + 2 * nfs4_name_maxsz))
93#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
94 nfs4_fattr_value_maxsz)
95#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
1da177e4
LT		 96#define encode_savefh_maxsz (op_encode_hdr_maxsz)
97#define decode_savefh_maxsz (op_decode_hdr_maxsz)
56ae19f3
TM		 98#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
99#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
1da177e4
LT		 100#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
101#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
102#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
103#define decode_renew_maxsz (op_decode_hdr_maxsz)
104#define encode_setclientid_maxsz \
105 (op_encode_hdr_maxsz + \
106 4 /*server->ip_addr*/ + \
107 1 /*Netid*/ + \
108 6 /*uaddr*/ + \
109 6 + (NFS4_VERIFIER_SIZE >> 2))
110#define decode_setclientid_maxsz \
111 (op_decode_hdr_maxsz + \
112 2 + \
113 1024) /* large value for CLID_INUSE */
114#define encode_setclientid_confirm_maxsz \
115 (op_encode_hdr_maxsz + \
116 3 + (NFS4_VERIFIER_SIZE >> 2))
117#define decode_setclientid_confirm_maxsz \
118 (op_decode_hdr_maxsz)
119#define encode_lookup_maxsz (op_encode_hdr_maxsz + \
120 1 + ((3 + NFS4_FHSIZE) >> 2))
121#define encode_remove_maxsz (op_encode_hdr_maxsz + \
122 nfs4_name_maxsz)
123#define encode_rename_maxsz (op_encode_hdr_maxsz + \
124 2 * nfs4_name_maxsz)
125#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
126#define encode_link_maxsz (op_encode_hdr_maxsz + \
127 nfs4_name_maxsz)
128#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
129#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
130 1 + nfs4_name_maxsz + \
131 nfs4_path_maxsz + \
96928206 132 nfs4_fattr_maxsz)
1da177e4
LT		 133#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
134#define encode_create_maxsz (op_encode_hdr_maxsz + \
135 2 + nfs4_name_maxsz + \
96928206 136 nfs4_fattr_maxsz)
1da177e4
LT		 137#define decode_create_maxsz (op_decode_hdr_maxsz + 8)
138#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
139#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
140#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
141#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
142#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
143 encode_putfh_maxsz + \
144 op_encode_hdr_maxsz + 7)
145#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
146 decode_putfh_maxsz + \
147 op_decode_hdr_maxsz + 2)
148#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
149 encode_putfh_maxsz + \
150 op_encode_hdr_maxsz)
151#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
152 decode_putfh_maxsz + \
153 op_decode_hdr_maxsz)
154#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
155 encode_putfh_maxsz + \
156 op_encode_hdr_maxsz + 9)
157#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
158 decode_putfh_maxsz + \
159 op_decode_hdr_maxsz + 2)
160#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
161 encode_putfh_maxsz + \
4f9838c7
TM		 162 op_encode_hdr_maxsz + 8 + \
163 encode_getattr_maxsz)
1da177e4
LT		 164#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
165 decode_putfh_maxsz + \
4f9838c7
TM		 166 op_decode_hdr_maxsz + 4 + \
167 decode_getattr_maxsz)
1da177e4
LT		 168#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
169 encode_putfh_maxsz + \
4f9838c7
TM		 170 op_encode_hdr_maxsz + 3 + \
171 encode_getattr_maxsz)
1da177e4
LT		 172#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
173 decode_putfh_maxsz + \
4f9838c7
TM		 174 op_decode_hdr_maxsz + 2 + \
175 decode_getattr_maxsz)
1da177e4
LT		 176#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
177 encode_putfh_maxsz + \
178 op_encode_hdr_maxsz + \
179 13 + 3 + 2 + 64 + \
180 encode_getattr_maxsz + \
181 encode_getfh_maxsz)
182#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
183 decode_putfh_maxsz + \
184 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
185 decode_getattr_maxsz + \
186 decode_getfh_maxsz)
187#define NFS4_enc_open_confirm_sz \
188 (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
190 op_encode_hdr_maxsz + 5)
191#define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
192 decode_putfh_maxsz + \
193 op_decode_hdr_maxsz + 4)
194#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
195 encode_putfh_maxsz + \
196 op_encode_hdr_maxsz + \
197 11)
198#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
199 decode_putfh_maxsz + \
200 op_decode_hdr_maxsz + \
201 4 + 5 + 2 + 3)
202#define NFS4_enc_open_downgrade_sz \
203 (compound_encode_hdr_maxsz + \
204 encode_putfh_maxsz + \
516a6af6
TM		 205 op_encode_hdr_maxsz + 7 + \
206 encode_getattr_maxsz)
1da177e4
LT		 207#define NFS4_dec_open_downgrade_sz \
208 (compound_decode_hdr_maxsz + \
209 decode_putfh_maxsz + \
516a6af6
TM		 210 op_decode_hdr_maxsz + 4 + \
211 decode_getattr_maxsz)
1da177e4
LT		 212#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
213 encode_putfh_maxsz + \
516a6af6
TM		 214 op_encode_hdr_maxsz + 5 + \
215 encode_getattr_maxsz)
1da177e4
LT		 216#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
217 decode_putfh_maxsz + \
516a6af6
TM		 218 op_decode_hdr_maxsz + 4 + \
219 decode_getattr_maxsz)
1da177e4
LT		 220#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
221 encode_putfh_maxsz + \
222 op_encode_hdr_maxsz + 4 + \
96928206 223 nfs4_fattr_maxsz + \
1da177e4
LT		 224 encode_getattr_maxsz)
225#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
226 decode_putfh_maxsz + \
227 op_decode_hdr_maxsz + 3)
228#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
229 encode_putfh_maxsz + \
230 encode_fsinfo_maxsz)
231#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
232 decode_putfh_maxsz + \
233 decode_fsinfo_maxsz)
234#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
235 encode_renew_maxsz)
236#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
237 decode_renew_maxsz)
238#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
239 encode_setclientid_maxsz)
240#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
241 decode_setclientid_maxsz)
242#define NFS4_enc_setclientid_confirm_sz \
243 (compound_encode_hdr_maxsz + \
244 encode_setclientid_confirm_maxsz + \
245 encode_putrootfh_maxsz + \
246 encode_fsinfo_maxsz)
247#define NFS4_dec_setclientid_confirm_sz \
248 (compound_decode_hdr_maxsz + \
249 decode_setclientid_confirm_maxsz + \
250 decode_putrootfh_maxsz + \
251 decode_fsinfo_maxsz)
252#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
253 encode_putfh_maxsz + \
254 encode_getattr_maxsz + \
255 op_encode_hdr_maxsz + \
256 1 + 1 + 2 + 2 + \
257 1 + 4 + 1 + 2 + \
258 owner_id_maxsz)
259#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
260 decode_putfh_maxsz + \
261 decode_getattr_maxsz + \
262 op_decode_hdr_maxsz + \
263 2 + 2 + 1 + 2 + \
264 owner_id_maxsz)
265#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
266 encode_putfh_maxsz + \
267 encode_getattr_maxsz + \
268 op_encode_hdr_maxsz + \
269 1 + 2 + 2 + 2 + \
270 owner_id_maxsz)
271#define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
272#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
273 encode_putfh_maxsz + \
274 encode_getattr_maxsz + \
275 op_encode_hdr_maxsz + \
276 1 + 1 + 4 + 2 + 2)
277#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
278 decode_putfh_maxsz + \
279 decode_getattr_maxsz + \
280 op_decode_hdr_maxsz + 4)
281#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
282 encode_putfh_maxsz + \
283 op_encode_hdr_maxsz + 1)
284#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
285 decode_putfh_maxsz + \
286 op_decode_hdr_maxsz + 2)
287#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
288 encode_putfh_maxsz + \
289 encode_getattr_maxsz)
290#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
291 decode_putfh_maxsz + \
292 decode_getattr_maxsz)
293#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
294 encode_putfh_maxsz + \
295 encode_lookup_maxsz + \
296 encode_getattr_maxsz + \
297 encode_getfh_maxsz)
298#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
299 decode_putfh_maxsz + \
300 op_decode_hdr_maxsz + \
301 decode_getattr_maxsz + \
302 decode_getfh_maxsz)
303#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
304 encode_putrootfh_maxsz + \
305 encode_getattr_maxsz + \
306 encode_getfh_maxsz)
307#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
308 decode_putrootfh_maxsz + \
309 decode_getattr_maxsz + \
310 decode_getfh_maxsz)
311#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
312 encode_putfh_maxsz + \
16e42959
TM		 313 encode_remove_maxsz + \
314 encode_getattr_maxsz)
1da177e4
LT		 315#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
316 decode_putfh_maxsz + \
16e42959
TM		 317 op_decode_hdr_maxsz + 5 + \
318 decode_getattr_maxsz)
1da177e4
LT		 319#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
320 encode_putfh_maxsz + \
321 encode_savefh_maxsz + \
322 encode_putfh_maxsz + \
6caf2c82
TM		 323 encode_rename_maxsz + \
324 encode_getattr_maxsz + \
325 encode_restorefh_maxsz + \
326 encode_getattr_maxsz)
1da177e4
LT		 327#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
328 decode_putfh_maxsz + \
329 decode_savefh_maxsz + \
330 decode_putfh_maxsz + \
6caf2c82
TM		 331 decode_rename_maxsz + \
332 decode_getattr_maxsz + \
333 decode_restorefh_maxsz + \
334 decode_getattr_maxsz)
1da177e4
LT		 335#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
336 encode_putfh_maxsz + \
337 encode_savefh_maxsz + \
338 encode_putfh_maxsz + \
91ba2eee
TM		 339 encode_link_maxsz + \
340 decode_getattr_maxsz + \
341 encode_restorefh_maxsz + \
342 decode_getattr_maxsz)
1da177e4
LT		 343#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
344 decode_putfh_maxsz + \
345 decode_savefh_maxsz + \
346 decode_putfh_maxsz + \
91ba2eee
TM		 347 decode_link_maxsz + \
348 decode_getattr_maxsz + \
349 decode_restorefh_maxsz + \
350 decode_getattr_maxsz)
1da177e4
LT		 351#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
352 encode_putfh_maxsz + \
353 encode_symlink_maxsz + \
354 encode_getattr_maxsz + \
355 encode_getfh_maxsz)
356#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
357 decode_putfh_maxsz + \
358 decode_symlink_maxsz + \
359 decode_getattr_maxsz + \
360 decode_getfh_maxsz)
361#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
362 encode_putfh_maxsz + \
56ae19f3 363 encode_savefh_maxsz + \
1da177e4 364 encode_create_maxsz + \
56ae19f3 365 encode_getfh_maxsz + \
1da177e4 366 encode_getattr_maxsz + \
56ae19f3
TM		 367 encode_restorefh_maxsz + \
368 encode_getattr_maxsz)
1da177e4
LT		 369#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
370 decode_putfh_maxsz + \
56ae19f3 371 decode_savefh_maxsz + \
1da177e4 372 decode_create_maxsz + \
56ae19f3 373 decode_getfh_maxsz + \
1da177e4 374 decode_getattr_maxsz + \
56ae19f3
TM		 375 decode_restorefh_maxsz + \
376 decode_getattr_maxsz)
1da177e4
LT		 377#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
378 encode_putfh_maxsz + \
379 encode_getattr_maxsz)
380#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
381 decode_putfh_maxsz + \
382 decode_getattr_maxsz)
383#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
384 encode_putfh_maxsz + \
385 encode_getattr_maxsz)
386#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
387 decode_putfh_maxsz + \
388 op_decode_hdr_maxsz + 12)
389#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
390 encode_getattr_maxsz)
391#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
392 decode_getattr_maxsz)
393#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
394 encode_putfh_maxsz + \
fa178f29
TM		 395 encode_delegreturn_maxsz + \
396 encode_getattr_maxsz)
1da177e4 397#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
fa178f29
TM		 398 decode_delegreturn_maxsz + \
399 decode_getattr_maxsz)
029d105e
BF		 400#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
401 encode_putfh_maxsz + \
402 encode_getattr_maxsz)
403#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
404 decode_putfh_maxsz + \
405 op_decode_hdr_maxsz + \
406 nfs4_fattr_bitmap_maxsz + 1)
23ec6965
BF		 407#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
408 encode_putfh_maxsz + \
409 op_encode_hdr_maxsz + 4 + \
410 nfs4_fattr_bitmap_maxsz + 1)
411#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
412 decode_putfh_maxsz + \
413 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
683b57b4
TM		 414#define NFS4_enc_fs_locations_sz \
415 (compound_encode_hdr_maxsz + \
416 encode_putfh_maxsz + \
417 encode_getattr_maxsz)
418#define NFS4_dec_fs_locations_sz \
419 (compound_decode_hdr_maxsz + \
420 decode_putfh_maxsz + \
421 op_decode_hdr_maxsz + \
422 nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 423
424static struct {
425 unsigned int mode;
426 unsigned int nfs2type;
427} nfs_type2fmt[] = {
428 { 0, NFNON },
429 { S_IFREG, NFREG },
430 { S_IFDIR, NFDIR },
431 { S_IFBLK, NFBLK },
432 { S_IFCHR, NFCHR },
433 { S_IFLNK, NFLNK },
434 { S_IFSOCK, NFSOCK },
435 { S_IFIFO, NFFIFO },
436 { 0, NFNON },
437 { 0, NFNON },
438};
439
440struct compound_hdr {
441 int32_t status;
442 uint32_t nops;
443 uint32_t taglen;
444 char * tag;
445};
446
447/*
448 * START OF "GENERIC" ENCODE ROUTINES.
449 * These may look a little ugly since they are imported from a "generic"
450 * set of XDR encode/decode routines which are intended to be shared by
451 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
452 *
453 * If the pain of reading these is too great, it should be a straightforward
454 * task to translate them into Linux-specific versions which are more
455 * consistent with the style used in NFSv2/v3...
456 */
457#define WRITE32(n) *p++ = htonl(n)
458#define WRITE64(n) do { \
459 *p++ = htonl((uint32_t)((n) >> 32)); \
460 *p++ = htonl((uint32_t)(n)); \
461} while (0)
462#define WRITEMEM(ptr,nbytes) do { \
463 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
464} while (0)
465
466#define RESERVE_SPACE(nbytes) do { \
467 p = xdr_reserve_space(xdr, nbytes); \
468 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
469 BUG_ON(!p); \
470} while (0)
471
472static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
473{
474 uint32_t *p;
475
476 p = xdr_reserve_space(xdr, 4 + len);
477 BUG_ON(p == NULL);
478 xdr_encode_opaque(p, str, len);
479}
480
481static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
482{
483 uint32_t *p;
484
485 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
486 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
487 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
488 WRITE32(hdr->taglen);
489 WRITEMEM(hdr->tag, hdr->taglen);
490 WRITE32(NFS4_MINOR_VERSION);
491 WRITE32(hdr->nops);
492 return 0;
493}
494
495static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
496{
497 uint32_t *p;
498
499 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
500 BUG_ON(p == NULL);
501 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
502}
503
504static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
505{
506 char owner_name[IDMAP_NAMESZ];
507 char owner_group[IDMAP_NAMESZ];
508 int owner_namelen = 0;
509 int owner_grouplen = 0;
510 uint32_t *p;
511 uint32_t *q;
512 int len;
513 uint32_t bmval0 = 0;
514 uint32_t bmval1 = 0;
515 int status;
516
517 /*
518 * We reserve enough space to write the entire attribute buffer at once.
519 * In the worst-case, this would be
520 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
521 * = 36 bytes, plus any contribution from variable-length fields
23ec6965 522 * such as owner/group.
1da177e4
LT		 523 */
524 len = 16;
525
526 /* Sigh */
527 if (iap->ia_valid & ATTR_SIZE)
528 len += 8;
529 if (iap->ia_valid & ATTR_MODE)
530 len += 4;
531 if (iap->ia_valid & ATTR_UID) {
532 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
533 if (owner_namelen < 0) {
534 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
535 iap->ia_uid);
536 /* XXX */
537 strcpy(owner_name, "nobody");
538 owner_namelen = sizeof("nobody") - 1;
539 /* goto out; */
540 }
541 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
542 }
543 if (iap->ia_valid & ATTR_GID) {
544 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
545 if (owner_grouplen < 0) {
546 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
547 iap->ia_gid);
548 strcpy(owner_group, "nobody");
549 owner_grouplen = sizeof("nobody") - 1;
550 /* goto out; */
551 }
552 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
553 }
554 if (iap->ia_valid & ATTR_ATIME_SET)
555 len += 16;
556 else if (iap->ia_valid & ATTR_ATIME)
557 len += 4;
558 if (iap->ia_valid & ATTR_MTIME_SET)
559 len += 16;
560 else if (iap->ia_valid & ATTR_MTIME)
561 len += 4;
562 RESERVE_SPACE(len);
563
564 /*
565 * We write the bitmap length now, but leave the bitmap and the attribute
566 * buffer length to be backfilled at the end of this routine.
567 */
568 WRITE32(2);
569 q = p;
570 p += 3;
571
572 if (iap->ia_valid & ATTR_SIZE) {
573 bmval0 |= FATTR4_WORD0_SIZE;
574 WRITE64(iap->ia_size);
575 }
576 if (iap->ia_valid & ATTR_MODE) {
577 bmval1 |= FATTR4_WORD1_MODE;
cf3fff54 578 WRITE32(iap->ia_mode & S_IALLUGO);
1da177e4
LT		 579 }
580 if (iap->ia_valid & ATTR_UID) {
581 bmval1 |= FATTR4_WORD1_OWNER;
582 WRITE32(owner_namelen);
583 WRITEMEM(owner_name, owner_namelen);
584 }
585 if (iap->ia_valid & ATTR_GID) {
586 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
587 WRITE32(owner_grouplen);
588 WRITEMEM(owner_group, owner_grouplen);
589 }
590 if (iap->ia_valid & ATTR_ATIME_SET) {
591 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
592 WRITE32(NFS4_SET_TO_CLIENT_TIME);
593 WRITE32(0);
594 WRITE32(iap->ia_mtime.tv_sec);
595 WRITE32(iap->ia_mtime.tv_nsec);
596 }
597 else if (iap->ia_valid & ATTR_ATIME) {
598 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
599 WRITE32(NFS4_SET_TO_SERVER_TIME);
600 }
601 if (iap->ia_valid & ATTR_MTIME_SET) {
602 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
603 WRITE32(NFS4_SET_TO_CLIENT_TIME);
604 WRITE32(0);
605 WRITE32(iap->ia_mtime.tv_sec);
606 WRITE32(iap->ia_mtime.tv_nsec);
607 }
608 else if (iap->ia_valid & ATTR_MTIME) {
609 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
610 WRITE32(NFS4_SET_TO_SERVER_TIME);
611 }
612
613 /*
614 * Now we backfill the bitmap and the attribute buffer length.
615 */
616 if (len != ((char *)p - (char *)q) + 4) {
617 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
618 len, ((char *)p - (char *)q) + 4);
619 BUG();
620 }
621 len = (char *)p - (char *)q - 12;
622 *q++ = htonl(bmval0);
623 *q++ = htonl(bmval1);
624 *q++ = htonl(len);
625
626 status = 0;
627/* out: */
628 return status;
629}
630
631static int encode_access(struct xdr_stream *xdr, u32 access)
632{
633 uint32_t *p;
634
635 RESERVE_SPACE(8);
636 WRITE32(OP_ACCESS);
637 WRITE32(access);
638
639 return 0;
640}
641
642static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
643{
644 uint32_t *p;
645
9512135d 646 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 647 WRITE32(OP_CLOSE);
cee54fc9 648 WRITE32(arg->seqid->sequence->counter);
9512135d 649 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
1da177e4
LT		 650
651 return 0;
652}
653
654static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
655{
656 uint32_t *p;
657
658 RESERVE_SPACE(16);
659 WRITE32(OP_COMMIT);
660 WRITE64(args->offset);
661 WRITE32(args->count);
662
663 return 0;
664}
665
666static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
667{
668 uint32_t *p;
669
670 RESERVE_SPACE(8);
671 WRITE32(OP_CREATE);
672 WRITE32(create->ftype);
673
674 switch (create->ftype) {
675 case NF4LNK:
676 RESERVE_SPACE(4 + create->u.symlink->len);
677 WRITE32(create->u.symlink->len);
678 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
679 break;
680
681 case NF4BLK: case NF4CHR:
682 RESERVE_SPACE(8);
683 WRITE32(create->u.device.specdata1);
684 WRITE32(create->u.device.specdata2);
685 break;
686
687 default:
688 break;
689 }
690
691 RESERVE_SPACE(4 + create->name->len);
692 WRITE32(create->name->len);
693 WRITEMEM(create->name->name, create->name->len);
694
695 return encode_attrs(xdr, create->attrs, create->server);
696}
697
698static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
699{
700 uint32_t *p;
701
702 RESERVE_SPACE(12);
703 WRITE32(OP_GETATTR);
704 WRITE32(1);
705 WRITE32(bitmap);
706 return 0;
707}
708
709static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
710{
711 uint32_t *p;
712
713 RESERVE_SPACE(16);
714 WRITE32(OP_GETATTR);
715 WRITE32(2);
716 WRITE32(bm0);
717 WRITE32(bm1);
718 return 0;
719}
720
721static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
722{
1da177e4
LT		 723 return encode_getattr_two(xdr,
724 bitmask[0] & nfs4_fattr_bitmap[0],
725 bitmask[1] & nfs4_fattr_bitmap[1]);
726}
727
728static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
729{
1da177e4
LT		 730 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
731 bitmask[1] & nfs4_fsinfo_bitmap[1]);
732}
733
830b8e33
MN		 734static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
735{
736 return encode_getattr_two(xdr,
737 bitmask[0] & nfs4_fs_locations_bitmap[0],
738 bitmask[1] & nfs4_fs_locations_bitmap[1]);
739}
740
1da177e4
LT		 741static int encode_getfh(struct xdr_stream *xdr)
742{
743 uint32_t *p;
744
745 RESERVE_SPACE(4);
746 WRITE32(OP_GETFH);
747
748 return 0;
749}
750
751static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
752{
753 uint32_t *p;
754
755 RESERVE_SPACE(8 + name->len);
756 WRITE32(OP_LINK);
757 WRITE32(name->len);
758 WRITEMEM(name->name, name->len);
759
760 return 0;
761}
762
911d1aaf
TM		 763static inline int nfs4_lock_type(struct file_lock *fl, int block)
764{
765 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
766 return block ? NFS4_READW_LT : NFS4_READ_LT;
767 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
768}
769
770static inline uint64_t nfs4_lock_length(struct file_lock *fl)
771{
772 if (fl->fl_end == OFFSET_MAX)
773 return ~(uint64_t)0;
774 return fl->fl_end - fl->fl_start + 1;
775}
776
1da177e4
LT		 777/*
778 * opcode,type,reclaim,offset,length,new_lock_owner = 32
779 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
780 */
911d1aaf 781static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
1da177e4
LT		 782{
783 uint32_t *p;
1da177e4
LT		 784
785 RESERVE_SPACE(32);
786 WRITE32(OP_LOCK);
911d1aaf
TM		 787 WRITE32(nfs4_lock_type(args->fl, args->block));
788 WRITE32(args->reclaim);
789 WRITE64(args->fl->fl_start);
790 WRITE64(nfs4_lock_length(args->fl));
791 WRITE32(args->new_lock_owner);
792 if (args->new_lock_owner){
1da177e4 793 RESERVE_SPACE(40);
911d1aaf
TM		 794 WRITE32(args->open_seqid->sequence->counter);
795 WRITEMEM(args->open_stateid->data, sizeof(args->open_stateid->data));
796 WRITE32(args->lock_seqid->sequence->counter);
797 WRITE64(args->lock_owner.clientid);
1da177e4 798 WRITE32(4);
911d1aaf 799 WRITE32(args->lock_owner.id);
1da177e4
LT		 800 }
801 else {
1da177e4 802 RESERVE_SPACE(20);
911d1aaf
TM		 803 WRITEMEM(args->lock_stateid->data, sizeof(args->lock_stateid->data));
804 WRITE32(args->lock_seqid->sequence->counter);
1da177e4
LT		 805 }
806
807 return 0;
808}
809
911d1aaf 810static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
1da177e4
LT		 811{
812 uint32_t *p;
1da177e4
LT		 813
814 RESERVE_SPACE(40);
815 WRITE32(OP_LOCKT);
911d1aaf
TM		 816 WRITE32(nfs4_lock_type(args->fl, 0));
817 WRITE64(args->fl->fl_start);
818 WRITE64(nfs4_lock_length(args->fl));
819 WRITE64(args->lock_owner.clientid);
1da177e4 820 WRITE32(4);
911d1aaf 821 WRITE32(args->lock_owner.id);
1da177e4
LT		 822
823 return 0;
824}
825
911d1aaf 826static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
1da177e4
LT		 827{
828 uint32_t *p;
1da177e4
LT		 829
830 RESERVE_SPACE(44);
831 WRITE32(OP_LOCKU);
911d1aaf
TM		 832 WRITE32(nfs4_lock_type(args->fl, 0));
833 WRITE32(args->seqid->sequence->counter);
834 WRITEMEM(args->stateid->data, sizeof(args->stateid->data));
835 WRITE64(args->fl->fl_start);
836 WRITE64(nfs4_lock_length(args->fl));
1da177e4
LT		 837
838 return 0;
839}
840
841static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
842{
843 int len = name->len;
844 uint32_t *p;
845
846 RESERVE_SPACE(8 + len);
847 WRITE32(OP_LOOKUP);
848 WRITE32(len);
849 WRITEMEM(name->name, len);
850
851 return 0;
852}
853
854static void encode_share_access(struct xdr_stream *xdr, int open_flags)
855{
856 uint32_t *p;
857
858 RESERVE_SPACE(8);
859 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
860 case FMODE_READ:
861 WRITE32(NFS4_SHARE_ACCESS_READ);
862 break;
863 case FMODE_WRITE:
864 WRITE32(NFS4_SHARE_ACCESS_WRITE);
865 break;
866 case FMODE_READ|FMODE_WRITE:
867 WRITE32(NFS4_SHARE_ACCESS_BOTH);
868 break;
869 default:
870 BUG();
871 }
872 WRITE32(0); /* for linux, share_deny = 0 always */
873}
874
875static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
876{
877 uint32_t *p;
878 /*
879 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
880 * owner 4 = 32
881 */
882 RESERVE_SPACE(8);
883 WRITE32(OP_OPEN);
cee54fc9 884 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 885 encode_share_access(xdr, arg->open_flags);
886 RESERVE_SPACE(16);
887 WRITE64(arg->clientid);
888 WRITE32(4);
889 WRITE32(arg->id);
890}
891
892static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
893{
894 uint32_t *p;
895
896 RESERVE_SPACE(4);
897 switch(arg->open_flags & O_EXCL) {
898 case 0:
899 WRITE32(NFS4_CREATE_UNCHECKED);
900 encode_attrs(xdr, arg->u.attrs, arg->server);
901 break;
902 default:
903 WRITE32(NFS4_CREATE_EXCLUSIVE);
904 encode_nfs4_verifier(xdr, &arg->u.verifier);
905 }
906}
907
908static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
909{
910 uint32_t *p;
911
912 RESERVE_SPACE(4);
913 switch (arg->open_flags & O_CREAT) {
914 case 0:
915 WRITE32(NFS4_OPEN_NOCREATE);
916 break;
917 default:
918 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
919 WRITE32(NFS4_OPEN_CREATE);
920 encode_createmode(xdr, arg);
921 }
922}
923
924static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
925{
926 uint32_t *p;
927
928 RESERVE_SPACE(4);
929 switch (delegation_type) {
930 case 0:
931 WRITE32(NFS4_OPEN_DELEGATE_NONE);
932 break;
933 case FMODE_READ:
934 WRITE32(NFS4_OPEN_DELEGATE_READ);
935 break;
936 case FMODE_WRITE|FMODE_READ:
937 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
938 break;
939 default:
940 BUG();
941 }
942}
943
944static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
945{
946 uint32_t *p;
947
948 RESERVE_SPACE(4);
949 WRITE32(NFS4_OPEN_CLAIM_NULL);
950 encode_string(xdr, name->len, name->name);
951}
952
953static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
954{
955 uint32_t *p;
956
957 RESERVE_SPACE(4);
958 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
959 encode_delegation_type(xdr, type);
960}
961
962static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
963{
964 uint32_t *p;
965
966 RESERVE_SPACE(4+sizeof(stateid->data));
967 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
968 WRITEMEM(stateid->data, sizeof(stateid->data));
969 encode_string(xdr, name->len, name->name);
970}
971
972static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
973{
974 encode_openhdr(xdr, arg);
975 encode_opentype(xdr, arg);
976 switch (arg->claim) {
977 case NFS4_OPEN_CLAIM_NULL:
978 encode_claim_null(xdr, arg->name);
979 break;
980 case NFS4_OPEN_CLAIM_PREVIOUS:
981 encode_claim_previous(xdr, arg->u.delegation_type);
982 break;
983 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
984 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
985 break;
986 default:
987 BUG();
988 }
989 return 0;
990}
991
992static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
993{
994 uint32_t *p;
995
cdd4e68b 996 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 997 WRITE32(OP_OPEN_CONFIRM);
cdd4e68b 998 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 999 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1000
1001 return 0;
1002}
1003
1004static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
1005{
1006 uint32_t *p;
1007
9512135d 1008 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 1009 WRITE32(OP_OPEN_DOWNGRADE);
9512135d 1010 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 1011 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1012 encode_share_access(xdr, arg->open_flags);
1013 return 0;
1014}
1015
1016static int
1017encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1018{
1019 int len = fh->size;
1020 uint32_t *p;
1021
1022 RESERVE_SPACE(8 + len);
1023 WRITE32(OP_PUTFH);
1024 WRITE32(len);
1025 WRITEMEM(fh->data, len);
1026
1027 return 0;
1028}
1029
1030static int encode_putrootfh(struct xdr_stream *xdr)
1031{
1032 uint32_t *p;
1033
1034 RESERVE_SPACE(4);
1035 WRITE32(OP_PUTROOTFH);
1036
1037 return 0;
1038}
1039
1040static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1041{
1da177e4
LT		 1042 nfs4_stateid stateid;
1043 uint32_t *p;
1044
1045 RESERVE_SPACE(16);
1046 if (ctx->state != NULL) {
1047 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1048 WRITEMEM(stateid.data, sizeof(stateid.data));
1049 } else
1050 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1051}
1052
1053static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1054{
1055 uint32_t *p;
1056
1057 RESERVE_SPACE(4);
1058 WRITE32(OP_READ);
1059
1060 encode_stateid(xdr, args->context);
1061
1062 RESERVE_SPACE(12);
1063 WRITE64(args->offset);
1064 WRITE32(args->count);
1065
1066 return 0;
1067}
1068
1069static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1070{
1071 struct rpc_auth *auth = req->rq_task->tk_auth;
97d312d0
MN		 1072 uint32_t attrs[2] = {
1073 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1074 FATTR4_WORD1_MOUNTED_ON_FILEID,
1075 };
1da177e4
LT		 1076 int replen;
1077 uint32_t *p;
1078
1079 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1080 WRITE32(OP_READDIR);
1081 WRITE64(readdir->cookie);
1082 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1083 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1084 WRITE32(readdir->count);
1085 WRITE32(2);
97d312d0
MN		 1086 /* Switch to mounted_on_fileid if the server supports it */
1087 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1088 attrs[0] &= ~FATTR4_WORD0_FILEID;
1089 else
1090 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1091 WRITE32(attrs[0] & readdir->bitmask[0]);
1092 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1093 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1094 __FUNCTION__,
1095 (unsigned long long)readdir->cookie,
1096 ((u32 *)readdir->verifier.data)[0],
1097 ((u32 *)readdir->verifier.data)[1],
1098 attrs[0] & readdir->bitmask[0],
1099 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1100
1101 /* set up reply kvec
1102 * toplevel_status + taglen + rescount + OP_PUTFH + status
1103 * + OP_READDIR + status + verifer(2) = 9
1104 */
1105 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1106 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1107 readdir->pgbase, readdir->count);
eadf4598
TM		 1108 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1109 __FUNCTION__, replen, readdir->pages,
1110 readdir->pgbase, readdir->count);
1da177e4
LT		 1111
1112 return 0;
1113}
1114
1115static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1116{
1117 struct rpc_auth *auth = req->rq_task->tk_auth;
1118 unsigned int replen;
1119 uint32_t *p;
1120
1121 RESERVE_SPACE(4);
1122 WRITE32(OP_READLINK);
1123
1124 /* set up reply kvec
1125 * toplevel_status + taglen + rescount + OP_PUTFH + status
1126 * + OP_READLINK + status + string length = 8
1127 */
1128 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1129 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1130 readlink->pgbase, readlink->pglen);
1131
1132 return 0;
1133}
1134
1135static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1136{
1137 uint32_t *p;
1138
1139 RESERVE_SPACE(8 + name->len);
1140 WRITE32(OP_REMOVE);
1141 WRITE32(name->len);
1142 WRITEMEM(name->name, name->len);
1143
1144 return 0;
1145}
1146
1147static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1148{
1149 uint32_t *p;
1150
1151 RESERVE_SPACE(8 + oldname->len);
1152 WRITE32(OP_RENAME);
1153 WRITE32(oldname->len);
1154 WRITEMEM(oldname->name, oldname->len);
1155
1156 RESERVE_SPACE(4 + newname->len);
1157 WRITE32(newname->len);
1158 WRITEMEM(newname->name, newname->len);
1159
1160 return 0;
1161}
1162
1163static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1164{
1165 uint32_t *p;
1166
1167 RESERVE_SPACE(12);
1168 WRITE32(OP_RENEW);
1169 WRITE64(client_stateid->cl_clientid);
1170
1171 return 0;
1172}
1173
56ae19f3
TM		 1174static int
1175encode_restorefh(struct xdr_stream *xdr)
1176{
1177 uint32_t *p;
1178
1179 RESERVE_SPACE(4);
1180 WRITE32(OP_RESTOREFH);
1181
1182 return 0;
1183}
1184
23ec6965
BF		 1185static int
1186encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1187{
1188 uint32_t *p;
1189
1190 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1191 WRITE32(OP_SETATTR);
1192 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1193 RESERVE_SPACE(2*4);
1194 WRITE32(1);
1195 WRITE32(FATTR4_WORD0_ACL);
1196 if (arg->acl_len % 4)
1197 return -EINVAL;
1198 RESERVE_SPACE(4);
1199 WRITE32(arg->acl_len);
1200 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1201 return 0;
1202}
1203
1da177e4
LT		 1204static int
1205encode_savefh(struct xdr_stream *xdr)
1206{
1207 uint32_t *p;
1208
1209 RESERVE_SPACE(4);
1210 WRITE32(OP_SAVEFH);
1211
1212 return 0;
1213}
1214
1215static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1216{
1217 int status;
1218 uint32_t *p;
1219
1220 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1221 WRITE32(OP_SETATTR);
1222 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1223
1224 if ((status = encode_attrs(xdr, arg->iap, server)))
1225 return status;
1226
1227 return 0;
1228}
1229
1230static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1231{
1232 uint32_t *p;
1233
1234 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1235 WRITE32(OP_SETCLIENTID);
1236 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1237
1238 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1239 RESERVE_SPACE(4);
1240 WRITE32(setclientid->sc_prog);
1241 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1242 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1243 RESERVE_SPACE(4);
1244 WRITE32(setclientid->sc_cb_ident);
1245
1246 return 0;
1247}
1248
1249static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1250{
1251 uint32_t *p;
1252
1253 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1254 WRITE32(OP_SETCLIENTID_CONFIRM);
1255 WRITE64(client_state->cl_clientid);
1256 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1257
1258 return 0;
1259}
1260
1261static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1262{
1263 uint32_t *p;
1264
1265 RESERVE_SPACE(4);
1266 WRITE32(OP_WRITE);
1267
1268 encode_stateid(xdr, args->context);
1269
1270 RESERVE_SPACE(16);
1271 WRITE64(args->offset);
1272 WRITE32(args->stable);
1273 WRITE32(args->count);
1274
1275 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1276
1277 return 0;
1278}
1279
1280static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1281{
1282 uint32_t *p;
1283
1284 RESERVE_SPACE(20);
1285
1286 WRITE32(OP_DELEGRETURN);
1287 WRITEMEM(stateid->data, sizeof(stateid->data));
1288 return 0;
1289
1290}
1291/*
1292 * END OF "GENERIC" ENCODE ROUTINES.
1293 */
1294
1295/*
1296 * Encode an ACCESS request
1297 */
1298static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1299{
1300 struct xdr_stream xdr;
1301 struct compound_hdr hdr = {
1302 .nops = 2,
1303 };
1304 int status;
1305
1306 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1307 encode_compound_hdr(&xdr, &hdr);
1308 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1309 status = encode_access(&xdr, args->access);
1310 return status;
1311}
1312
1313/*
1314 * Encode LOOKUP request
1315 */
1316static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1317{
1318 struct xdr_stream xdr;
1319 struct compound_hdr hdr = {
1320 .nops = 4,
1321 };
1322 int status;
1323
1324 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1325 encode_compound_hdr(&xdr, &hdr);
1326 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1327 goto out;
1328 if ((status = encode_lookup(&xdr, args->name)) != 0)
1329 goto out;
1330 if ((status = encode_getfh(&xdr)) != 0)
1331 goto out;
1332 status = encode_getfattr(&xdr, args->bitmask);
1333out:
1334 return status;
1335}
1336
1337/*
1338 * Encode LOOKUP_ROOT request
1339 */
1340static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1341{
1342 struct xdr_stream xdr;
1343 struct compound_hdr hdr = {
1344 .nops = 3,
1345 };
1346 int status;
1347
1348 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1349 encode_compound_hdr(&xdr, &hdr);
1350 if ((status = encode_putrootfh(&xdr)) != 0)
1351 goto out;
1352 if ((status = encode_getfh(&xdr)) == 0)
1353 status = encode_getfattr(&xdr, args->bitmask);
1354out:
1355 return status;
1356}
1357
1358/*
1359 * Encode REMOVE request
1360 */
1361static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1362{
1363 struct xdr_stream xdr;
1364 struct compound_hdr hdr = {
16e42959 1365 .nops = 3,
1da177e4
LT		 1366 };
1367 int status;
1368
1369 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1370 encode_compound_hdr(&xdr, &hdr);
16e42959
TM		 1371 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1372 goto out;
1373 if ((status = encode_remove(&xdr, args->name)) != 0)
1374 goto out;
1375 status = encode_getfattr(&xdr, args->bitmask);
1376out:
1da177e4
LT		 1377 return status;
1378}
1379
1380/*
1381 * Encode RENAME request
1382 */
1383static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1384{
1385 struct xdr_stream xdr;
1386 struct compound_hdr hdr = {
6caf2c82 1387 .nops = 7,
1da177e4
LT		 1388 };
1389 int status;
1390
1391 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1392 encode_compound_hdr(&xdr, &hdr);
1393 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1394 goto out;
1395 if ((status = encode_savefh(&xdr)) != 0)
1396 goto out;
1397 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1398 goto out;
6caf2c82
TM		 1399 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1400 goto out;
1401 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1402 goto out;
1403 if ((status = encode_restorefh(&xdr)) != 0)
1404 goto out;
1405 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1406out:
1407 return status;
1408}
1409
1410/*
1411 * Encode LINK request
1412 */
1413static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1414{
1415 struct xdr_stream xdr;
1416 struct compound_hdr hdr = {
91ba2eee 1417 .nops = 7,
1da177e4
LT		 1418 };
1419 int status;
1420
1421 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1422 encode_compound_hdr(&xdr, &hdr);
1423 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1424 goto out;
1425 if ((status = encode_savefh(&xdr)) != 0)
1426 goto out;
1427 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1428 goto out;
91ba2eee
TM		 1429 if ((status = encode_link(&xdr, args->name)) != 0)
1430 goto out;
1431 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1432 goto out;
1433 if ((status = encode_restorefh(&xdr)) != 0)
1434 goto out;
1435 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1436out:
1437 return status;
1438}
1439
1440/*
1441 * Encode CREATE request
1442 */
1443static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1444{
1445 struct xdr_stream xdr;
1446 struct compound_hdr hdr = {
56ae19f3 1447 .nops = 7,
1da177e4
LT		 1448 };
1449 int status;
1450
1451 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1452 encode_compound_hdr(&xdr, &hdr);
1453 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1454 goto out;
56ae19f3
TM		 1455 if ((status = encode_savefh(&xdr)) != 0)
1456 goto out;
1da177e4
LT		 1457 if ((status = encode_create(&xdr, args)) != 0)
1458 goto out;
1459 if ((status = encode_getfh(&xdr)) != 0)
1460 goto out;
56ae19f3
TM		 1461 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1462 goto out;
1463 if ((status = encode_restorefh(&xdr)) != 0)
1464 goto out;
1da177e4
LT		 1465 status = encode_getfattr(&xdr, args->bitmask);
1466out:
1467 return status;
1468}
1469
1470/*
1471 * Encode SYMLINK request
1472 */
1473static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1474{
1475 return nfs4_xdr_enc_create(req, p, args);
1476}
1477
1478/*
1479 * Encode GETATTR request
1480 */
1481static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1482{
1483 struct xdr_stream xdr;
1484 struct compound_hdr hdr = {
1485 .nops = 2,
1486 };
1487 int status;
1488
1489 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1490 encode_compound_hdr(&xdr, &hdr);
1491 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1492 status = encode_getfattr(&xdr, args->bitmask);
1493 return status;
1494}
1495
1496/*
1497 * Encode a CLOSE request
1498 */
1499static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1500{
1501 struct xdr_stream xdr;
1502 struct compound_hdr hdr = {
516a6af6 1503 .nops = 3,
1da177e4
LT		 1504 };
1505 int status;
1506
1507 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1508 encode_compound_hdr(&xdr, &hdr);
1509 status = encode_putfh(&xdr, args->fh);
1510 if(status)
1511 goto out;
1512 status = encode_close(&xdr, args);
516a6af6
TM		 1513 if (status != 0)
1514 goto out;
1515 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1516out:
1517 return status;
1518}
1519
1520/*
1521 * Encode an OPEN request
1522 */
1523static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1524{
1525 struct xdr_stream xdr;
1526 struct compound_hdr hdr = {
56ae19f3 1527 .nops = 7,
1da177e4
LT		 1528 };
1529 int status;
1530
1531 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1532 encode_compound_hdr(&xdr, &hdr);
1533 status = encode_putfh(&xdr, args->fh);
56ae19f3
TM		 1534 if (status)
1535 goto out;
1536 status = encode_savefh(&xdr);
1da177e4
LT		 1537 if (status)
1538 goto out;
1539 status = encode_open(&xdr, args);
1540 if (status)
1541 goto out;
1542 status = encode_getfh(&xdr);
1543 if (status)
1544 goto out;
1545 status = encode_getfattr(&xdr, args->bitmask);
56ae19f3
TM		 1546 if (status)
1547 goto out;
1548 status = encode_restorefh(&xdr);
1549 if (status)
1550 goto out;
1551 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1552out:
1553 return status;
1554}
1555
1556/*
1557 * Encode an OPEN_CONFIRM request
1558 */
1559static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1560{
1561 struct xdr_stream xdr;
1562 struct compound_hdr hdr = {
1563 .nops = 2,
1564 };
1565 int status;
1566
1567 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1568 encode_compound_hdr(&xdr, &hdr);
1569 status = encode_putfh(&xdr, args->fh);
1570 if(status)
1571 goto out;
1572 status = encode_open_confirm(&xdr, args);
1573out:
1574 return status;
1575}
1576
1577/*
1578 * Encode an OPEN request with no attributes.
1579 */
1580static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1581{
1582 struct xdr_stream xdr;
1583 struct compound_hdr hdr = {
864472e9 1584 .nops = 3,
1da177e4
LT		 1585 };
1586 int status;
1587
1588 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1589 encode_compound_hdr(&xdr, &hdr);
1590 status = encode_putfh(&xdr, args->fh);
1591 if (status)
1592 goto out;
1593 status = encode_open(&xdr, args);
864472e9
TM		 1594 if (status)
1595 goto out;
1596 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1597out:
1598 return status;
1599}
1600
1601/*
1602 * Encode an OPEN_DOWNGRADE request
1603 */
1604static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1605{
1606 struct xdr_stream xdr;
1607 struct compound_hdr hdr = {
516a6af6 1608 .nops = 3,
1da177e4
LT		 1609 };
1610 int status;
1611
1612 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1613 encode_compound_hdr(&xdr, &hdr);
1614 status = encode_putfh(&xdr, args->fh);
1615 if (status)
1616 goto out;
1617 status = encode_open_downgrade(&xdr, args);
516a6af6
TM		 1618 if (status != 0)
1619 goto out;
1620 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1621out:
1622 return status;
1623}
1624
1625/*
1626 * Encode a LOCK request
1627 */
911d1aaf 1628static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lock_args *args)
1da177e4
LT		 1629{
1630 struct xdr_stream xdr;
1631 struct compound_hdr hdr = {
1632 .nops = 2,
1633 };
1634 int status;
1635
1636 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1637 encode_compound_hdr(&xdr, &hdr);
1638 status = encode_putfh(&xdr, args->fh);
1639 if(status)
1640 goto out;
1641 status = encode_lock(&xdr, args);
1642out:
1643 return status;
1644}
1645
1646/*
1647 * Encode a LOCKT request
1648 */
911d1aaf 1649static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockt_args *args)
1da177e4
LT		 1650{
1651 struct xdr_stream xdr;
1652 struct compound_hdr hdr = {
1653 .nops = 2,
1654 };
1655 int status;
1656
1657 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1658 encode_compound_hdr(&xdr, &hdr);
1659 status = encode_putfh(&xdr, args->fh);
1660 if(status)
1661 goto out;
1662 status = encode_lockt(&xdr, args);
1663out:
1664 return status;
1665}
1666
1667/*
1668 * Encode a LOCKU request
1669 */
911d1aaf 1670static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_locku_args *args)
1da177e4
LT		 1671{
1672 struct xdr_stream xdr;
1673 struct compound_hdr hdr = {
1674 .nops = 2,
1675 };
1676 int status;
1677
1678 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1679 encode_compound_hdr(&xdr, &hdr);
1680 status = encode_putfh(&xdr, args->fh);
1681 if(status)
1682 goto out;
1683 status = encode_locku(&xdr, args);
1684out:
1685 return status;
1686}
1687
1688/*
1689 * Encode a READLINK request
1690 */
1691static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1692{
1693 struct xdr_stream xdr;
1694 struct compound_hdr hdr = {
1695 .nops = 2,
1696 };
1697 int status;
1698
1699 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1700 encode_compound_hdr(&xdr, &hdr);
1701 status = encode_putfh(&xdr, args->fh);
1702 if(status)
1703 goto out;
1704 status = encode_readlink(&xdr, args, req);
1705out:
1706 return status;
1707}
1708
1709/*
1710 * Encode a READDIR request
1711 */
1712static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1713{
1714 struct xdr_stream xdr;
1715 struct compound_hdr hdr = {
1716 .nops = 2,
1717 };
1718 int status;
1719
1720 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1721 encode_compound_hdr(&xdr, &hdr);
1722 status = encode_putfh(&xdr, args->fh);
1723 if(status)
1724 goto out;
1725 status = encode_readdir(&xdr, args, req);
1726out:
1727 return status;
1728}
1729
1730/*
1731 * Encode a READ request
1732 */
1733static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1734{
1735 struct rpc_auth *auth = req->rq_task->tk_auth;
1736 struct xdr_stream xdr;
1737 struct compound_hdr hdr = {
1738 .nops = 2,
1739 };
1740 int replen, status;
1741
1742 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1743 encode_compound_hdr(&xdr, &hdr);
1744 status = encode_putfh(&xdr, args->fh);
1745 if (status)
1746 goto out;
1747 status = encode_read(&xdr, args);
1748 if (status)
1749 goto out;
1750
1751 /* set up reply kvec
1752 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1753 * + OP_READ + status + eof + datalen = 9
1754 */
1755 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1756 xdr_inline_pages(&req->rq_rcv_buf, replen,
1757 args->pages, args->pgbase, args->count);
1758out:
1759 return status;
1760}
1761
1762/*
1763 * Encode an SETATTR request
1764 */
1765static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1766
1767{
1768 struct xdr_stream xdr;
1769 struct compound_hdr hdr = {
1770 .nops = 3,
1771 };
1772 int status;
1773
1774 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1775 encode_compound_hdr(&xdr, &hdr);
1776 status = encode_putfh(&xdr, args->fh);
1777 if(status)
1778 goto out;
1779 status = encode_setattr(&xdr, args, args->server);
1780 if(status)
1781 goto out;
1782 status = encode_getfattr(&xdr, args->bitmask);
1783out:
1784 return status;
1785}
1786
029d105e
BF		 1787/*
1788 * Encode a GETACL request
1789 */
1790static int
1791nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1792 struct nfs_getaclargs *args)
1793{
1794 struct xdr_stream xdr;
1795 struct rpc_auth *auth = req->rq_task->tk_auth;
1796 struct compound_hdr hdr = {
1797 .nops = 2,
1798 };
1799 int replen, status;
1800
1801 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1802 encode_compound_hdr(&xdr, &hdr);
1803 status = encode_putfh(&xdr, args->fh);
1804 if (status)
1805 goto out;
1806 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1807 /* set up reply buffer: */
1808 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1809 xdr_inline_pages(&req->rq_rcv_buf, replen,
1810 args->acl_pages, args->acl_pgbase, args->acl_len);
1811out:
1812 return status;
1813}
1814
1da177e4
LT		 1815/*
1816 * Encode a WRITE request
1817 */
1818static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1819{
1820 struct xdr_stream xdr;
1821 struct compound_hdr hdr = {
4f9838c7 1822 .nops = 3,
1da177e4
LT		 1823 };
1824 int status;
1825
1826 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1827 encode_compound_hdr(&xdr, &hdr);
1828 status = encode_putfh(&xdr, args->fh);
1829 if (status)
1830 goto out;
1831 status = encode_write(&xdr, args);
4f9838c7
TM		 1832 if (status)
1833 goto out;
1834 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1835out:
1836 return status;
1837}
1838
1839/*
1840 * a COMMIT request
1841 */
1842static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1843{
1844 struct xdr_stream xdr;
1845 struct compound_hdr hdr = {
4f9838c7 1846 .nops = 3,
1da177e4
LT		 1847 };
1848 int status;
1849
1850 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1851 encode_compound_hdr(&xdr, &hdr);
1852 status = encode_putfh(&xdr, args->fh);
1853 if (status)
1854 goto out;
1855 status = encode_commit(&xdr, args);
4f9838c7
TM		 1856 if (status)
1857 goto out;
1858 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1859out:
1860 return status;
1861}
1862
1863/*
1864 * FSINFO request
1865 */
1866static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1867{
1868 struct xdr_stream xdr;
1869 struct compound_hdr hdr = {
1870 .nops = 2,
1871 };
1872 int status;
1873
1874 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1875 encode_compound_hdr(&xdr, &hdr);
1876 status = encode_putfh(&xdr, args->fh);
1877 if (!status)
1878 status = encode_fsinfo(&xdr, args->bitmask);
1879 return status;
1880}
1881
1882/*
1883 * a PATHCONF request
1884 */
1885static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1886{
1da177e4
LT		 1887 struct xdr_stream xdr;
1888 struct compound_hdr hdr = {
1889 .nops = 2,
1890 };
1891 int status;
1892
1893 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1894 encode_compound_hdr(&xdr, &hdr);
1895 status = encode_putfh(&xdr, args->fh);
1896 if (!status)
1897 status = encode_getattr_one(&xdr,
1898 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1899 return status;
1900}
1901
1902/*
1903 * a STATFS request
1904 */
1905static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1906{
1da177e4
LT		 1907 struct xdr_stream xdr;
1908 struct compound_hdr hdr = {
1909 .nops = 2,
1910 };
1911 int status;
1912
1913 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1914 encode_compound_hdr(&xdr, &hdr);
1915 status = encode_putfh(&xdr, args->fh);
1916 if (status == 0)
1917 status = encode_getattr_two(&xdr,
1918 args->bitmask[0] & nfs4_statfs_bitmap[0],
1919 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1920 return status;
1921}
1922
1923/*
1924 * GETATTR_BITMAP request
1925 */
1926static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1927{
1928 struct xdr_stream xdr;
1929 struct compound_hdr hdr = {
1930 .nops = 2,
1931 };
1932 int status;
1933
1934 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1935 encode_compound_hdr(&xdr, &hdr);
1936 status = encode_putfh(&xdr, fhandle);
1937 if (status == 0)
1938 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1939 FATTR4_WORD0_LINK_SUPPORT|
1940 FATTR4_WORD0_SYMLINK_SUPPORT|
1941 FATTR4_WORD0_ACLSUPPORT);
1942 return status;
1943}
1944
1945/*
1946 * a RENEW request
1947 */
1948static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1949{
1950 struct xdr_stream xdr;
1951 struct compound_hdr hdr = {
1952 .nops = 1,
1953 };
1954
1955 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1956 encode_compound_hdr(&xdr, &hdr);
1957 return encode_renew(&xdr, clp);
1958}
1959
1960/*
1961 * a SETCLIENTID request
1962 */
1963static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1964{
1965 struct xdr_stream xdr;
1966 struct compound_hdr hdr = {
1967 .nops = 1,
1968 };
1969
1970 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1971 encode_compound_hdr(&xdr, &hdr);
1972 return encode_setclientid(&xdr, sc);
1973}
1974
1975/*
1976 * a SETCLIENTID_CONFIRM request
1977 */
1978static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1979{
1980 struct xdr_stream xdr;
1981 struct compound_hdr hdr = {
1982 .nops = 3,
1983 };
1984 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1985 int status;
1986
1987 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1988 encode_compound_hdr(&xdr, &hdr);
1989 status = encode_setclientid_confirm(&xdr, clp);
1990 if (!status)
1991 status = encode_putrootfh(&xdr);
1992 if (!status)
1993 status = encode_fsinfo(&xdr, lease_bitmap);
1994 return status;
1995}
1996
1997/*
1998 * DELEGRETURN request
1999 */
2000static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
2001{
2002 struct xdr_stream xdr;
2003 struct compound_hdr hdr = {
fa178f29 2004 .nops = 3,
1da177e4
LT		 2005 };
2006 int status;
2007
2008 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2009 encode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 2010 status = encode_putfh(&xdr, args->fhandle);
2011 if (status != 0)
2012 goto out;
2013 status = encode_delegreturn(&xdr, args->stateid);
2014 if (status != 0)
2015 goto out;
2016 status = encode_getfattr(&xdr, args->bitmask);
2017out:
1da177e4
LT		 2018 return status;
2019}
2020
683b57b4
TM		 2021/*
2022 * Encode FS_LOCATIONS request
2023 */
2024static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs_locations_arg *args)
2025{
2026 struct xdr_stream xdr;
2027 struct compound_hdr hdr = {
2028 .nops = 3,
2029 };
2030 struct rpc_auth *auth = req->rq_task->tk_auth;
2031 int replen;
2032 int status;
2033
2034 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2035 encode_compound_hdr(&xdr, &hdr);
2036 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2037 goto out;
2038 if ((status = encode_lookup(&xdr, args->name)) != 0)
2039 goto out;
830b8e33 2040 if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
683b57b4
TM		 2041 goto out;
2042 /* set up reply
830b8e33 2043 * toplevel_status + OP_PUTFH + status
683b57b4
TM		 2044 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2045 */
2046 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2047 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2048 0, PAGE_SIZE);
2049out:
2050 return status;
2051}
2052
1da177e4
LT		 2053/*
2054 * START OF "GENERIC" DECODE ROUTINES.
2055 * These may look a little ugly since they are imported from a "generic"
2056 * set of XDR encode/decode routines which are intended to be shared by
2057 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2058 *
2059 * If the pain of reading these is too great, it should be a straightforward
2060 * task to translate them into Linux-specific versions which are more
2061 * consistent with the style used in NFSv2/v3...
2062 */
2063#define READ32(x) (x) = ntohl(*p++)
2064#define READ64(x) do { \
2065 (x) = (u64)ntohl(*p++) << 32; \
2066 (x) |= ntohl(*p++); \
2067} while (0)
2068#define READTIME(x) do { \
2069 p++; \
2070 (x.tv_sec) = ntohl(*p++); \
2071 (x.tv_nsec) = ntohl(*p++); \
2072} while (0)
2073#define COPYMEM(x,nbytes) do { \
2074 memcpy((x), p, nbytes); \
2075 p += XDR_QUADLEN(nbytes); \
2076} while (0)
2077
2078#define READ_BUF(nbytes) do { \
2079 p = xdr_inline_decode(xdr, nbytes); \
2080 if (!p) { \
2081 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
2082 __FUNCTION__, __LINE__); \
2083 return -EIO; \
2084 } \
2085} while (0)
2086
683b57b4 2087static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
1da177e4
LT		 2088{
2089 uint32_t *p;
2090
2091 READ_BUF(4);
2092 READ32(*len);
2093 READ_BUF(*len);
2094 *string = (char *)p;
2095 return 0;
2096}
2097
2098static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2099{
2100 uint32_t *p;
2101
2102 READ_BUF(8);
2103 READ32(hdr->status);
2104 READ32(hdr->taglen);
2105
2106 READ_BUF(hdr->taglen + 4);
2107 hdr->tag = (char *)p;
2108 p += XDR_QUADLEN(hdr->taglen);
2109 READ32(hdr->nops);
2110 return 0;
2111}
2112
2113static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2114{
2115 uint32_t *p;
2116 uint32_t opnum;
2117 int32_t nfserr;
2118
2119 READ_BUF(8);
2120 READ32(opnum);
2121 if (opnum != expected) {
2122 printk(KERN_NOTICE
2123 "nfs4_decode_op_hdr: Server returned operation"
2124 " %d but we issued a request for %d\n",
2125 opnum, expected);
2126 return -EIO;
2127 }
2128 READ32(nfserr);
2129 if (nfserr != NFS_OK)
2130 return -nfs_stat_to_errno(nfserr);
2131 return 0;
2132}
2133
2134/* Dummy routine */
2135static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2136{
2137 uint32_t *p;
683b57b4 2138 unsigned int strlen;
1da177e4
LT		 2139 char *str;
2140
2141 READ_BUF(12);
2142 return decode_opaque_inline(xdr, &strlen, &str);
2143}
2144
2145static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2146{
2147 uint32_t bmlen, *p;
2148
2149 READ_BUF(4);
2150 READ32(bmlen);
2151
2152 bitmap[0] = bitmap[1] = 0;
2153 READ_BUF((bmlen << 2));
2154 if (bmlen > 0) {
2155 READ32(bitmap[0]);
2156 if (bmlen > 1)
2157 READ32(bitmap[1]);
2158 }
2159 return 0;
2160}
2161
2162static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2163{
2164 uint32_t *p;
2165
2166 READ_BUF(4);
2167 READ32(*attrlen);
2168 *savep = xdr->p;
2169 return 0;
2170}
2171
2172static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2173{
2174 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2175 decode_attr_bitmap(xdr, bitmask);
2176 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2177 } else
2178 bitmask[0] = bitmask[1] = 0;
2179 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2180 return 0;
2181}
2182
2183static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2184{
2185 uint32_t *p;
2186
2187 *type = 0;
2188 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2189 return -EIO;
2190 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2191 READ_BUF(4);
2192 READ32(*type);
2193 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2194 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2195 return -EIO;
2196 }
2197 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2198 }
2199 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2200 return 0;
2201}
2202
2203static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2204{
2205 uint32_t *p;
2206
2207 *change = 0;
2208 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2209 return -EIO;
2210 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2211 READ_BUF(8);
2212 READ64(*change);
2213 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2214 }
2215 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2216 (unsigned long long)*change);
2217 return 0;
2218}
2219
2220static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2221{
2222 uint32_t *p;
2223
2224 *size = 0;
2225 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2226 return -EIO;
2227 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2228 READ_BUF(8);
2229 READ64(*size);
2230 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2231 }
2232 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2233 return 0;
2234}
2235
2236static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2237{
2238 uint32_t *p;
2239
2240 *res = 0;
2241 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2242 return -EIO;
2243 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2244 READ_BUF(4);
2245 READ32(*res);
2246 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2247 }
2248 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2249 return 0;
2250}
2251
2252static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2253{
2254 uint32_t *p;
2255
2256 *res = 0;
2257 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2258 return -EIO;
2259 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2260 READ_BUF(4);
2261 READ32(*res);
2262 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2263 }
2264 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2265 return 0;
2266}
2267
8b4bdcf8 2268static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
1da177e4
LT		 2269{
2270 uint32_t *p;
2271
2272 fsid->major = 0;
2273 fsid->minor = 0;
2274 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2275 return -EIO;
2276 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2277 READ_BUF(16);
2278 READ64(fsid->major);
2279 READ64(fsid->minor);
2280 bitmap[0] &= ~FATTR4_WORD0_FSID;
2281 }
2282 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2283 (unsigned long long)fsid->major,
2284 (unsigned long long)fsid->minor);
2285 return 0;
2286}
2287
2288static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2289{
2290 uint32_t *p;
2291
2292 *res = 60;
2293 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2294 return -EIO;
2295 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2296 READ_BUF(4);
2297 READ32(*res);
2298 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2299 }
2300 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2301 return 0;
2302}
2303
2304static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2305{
2306 uint32_t *p;
2307
2308 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2309 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2310 return -EIO;
2311 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2312 READ_BUF(4);
2313 READ32(*res);
2314 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2315 }
2316 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2317 return 0;
2318}
2319
2320static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2321{
2322 uint32_t *p;
2323
2324 *fileid = 0;
2325 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2326 return -EIO;
2327 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2328 READ_BUF(8);
2329 READ64(*fileid);
2330 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2331 }
2332 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2333 return 0;
2334}
2335
99baf625
MN		 2336static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2337{
2338 uint32_t *p;
2339
2340 *fileid = 0;
2341 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2342 return -EIO;
2343 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2344 READ_BUF(8);
2345 READ64(*fileid);
2346 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2347 }
2348 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2349 return 0;
2350}
2351
1da177e4
LT		 2352static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2353{
2354 uint32_t *p;
2355 int status = 0;
2356
2357 *res = 0;
2358 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2359 return -EIO;
2360 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2361 READ_BUF(8);
2362 READ64(*res);
2363 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2364 }
2365 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2366 return status;
2367}
2368
2369static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2370{
2371 uint32_t *p;
2372 int status = 0;
2373
2374 *res = 0;
2375 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2376 return -EIO;
2377 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2378 READ_BUF(8);
2379 READ64(*res);
2380 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2381 }
2382 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2383 return status;
2384}
2385
2386static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2387{
2388 uint32_t *p;
2389 int status = 0;
2390
2391 *res = 0;
2392 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2393 return -EIO;
2394 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2395 READ_BUF(8);
2396 READ64(*res);
2397 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2398 }
2399 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2400 return status;
2401}
2402
7aaa0b3b
MN		 2403static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2404{
2405 int n;
2406 uint32_t *p;
2407 int status = 0;
2408
2409 READ_BUF(4);
2410 READ32(n);
2411 if (n <= 0)
2412 goto out_eio;
2413 dprintk("path ");
2414 path->ncomponents = 0;
2415 while (path->ncomponents < n) {
2416 struct nfs4_string *component = &path->components[path->ncomponents];
2417 status = decode_opaque_inline(xdr, &component->len, &component->data);
2418 if (unlikely(status != 0))
2419 goto out_eio;
2420 if (path->ncomponents != n)
2421 dprintk("/");
2422 dprintk("%s", component->data);
2423 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2424 path->ncomponents++;
2425 else {
2426 dprintk("cannot parse %d components in path\n", n);
2427 goto out_eio;
2428 }
2429 }
2430out:
2431 dprintk("\n");
2432 return status;
2433out_eio:
2434 dprintk(" status %d", status);
2435 status = -EIO;
2436 goto out;
2437}
2438
2439static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
683b57b4
TM		 2440{
2441 int n;
2442 uint32_t *p;
2443 int status = -EIO;
2444
2445 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2446 goto out;
2447 status = 0;
2448 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2449 goto out;
7aaa0b3b
MN		 2450 dprintk("%s: fsroot ", __FUNCTION__);
2451 status = decode_pathname(xdr, &res->fs_path);
683b57b4
TM		 2452 if (unlikely(status != 0))
2453 goto out;
2454 READ_BUF(4);
2455 READ32(n);
2456 if (n <= 0)
2457 goto out_eio;
2458 res->nlocations = 0;
2459 while (res->nlocations < n) {
7aaa0b3b
MN		 2460 int m;
2461 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
683b57b4 2462
7aaa0b3b
MN		 2463 READ_BUF(4);
2464 READ32(m);
2465 if (m <= 0)
683b57b4 2466 goto out_eio;
7aaa0b3b
MN		 2467
2468 loc->nservers = 0;
2469 dprintk("%s: servers ", __FUNCTION__);
2470 while (loc->nservers < m) {
2471 struct nfs4_string *server = &loc->servers[loc->nservers];
2472 status = decode_opaque_inline(xdr, &server->len, &server->data);
2473 if (unlikely(status != 0))
2474 goto out_eio;
2475 dprintk("%s ", server->data);
2476 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2477 loc->nservers++;
2478 else {
2479 int i;
2480 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2481 for (i = loc->nservers; i < m; i++) {
2482 int len;
2483 char *data;
2484 status = decode_opaque_inline(xdr, &len, &data);
2485 if (unlikely(status != 0))
2486 goto out_eio;
2487 }
2488 }
2489 }
2490 status = decode_pathname(xdr, &loc->rootpath);
683b57b4
TM		 2491 if (unlikely(status != 0))
2492 goto out_eio;
7aaa0b3b 2493 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
683b57b4
TM		 2494 res->nlocations++;
2495 }
2496out:
2497 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2498 return status;
2499out_eio:
2500 status = -EIO;
2501 goto out;
2502}
2503
1da177e4
LT		 2504static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2505{
2506 uint32_t *p;
2507 int status = 0;
2508
2509 *res = 0;
2510 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2511 return -EIO;
2512 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2513 READ_BUF(8);
2514 READ64(*res);
2515 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2516 }
2517 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2518 return status;
2519}
2520
2521static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2522{
2523 uint32_t *p;
2524 int status = 0;
2525
2526 *maxlink = 1;
2527 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2528 return -EIO;
2529 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2530 READ_BUF(4);
2531 READ32(*maxlink);
2532 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2533 }
2534 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2535 return status;
2536}
2537
2538static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2539{
2540 uint32_t *p;
2541 int status = 0;
2542
2543 *maxname = 1024;
2544 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2545 return -EIO;
2546 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2547 READ_BUF(4);
2548 READ32(*maxname);
2549 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2550 }
2551 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2552 return status;
2553}
2554
2555static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2556{
2557 uint32_t *p;
2558 int status = 0;
2559
2560 *res = 1024;
2561 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2562 return -EIO;
2563 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2564 uint64_t maxread;
2565 READ_BUF(8);
2566 READ64(maxread);
2567 if (maxread > 0x7FFFFFFF)
2568 maxread = 0x7FFFFFFF;
2569 *res = (uint32_t)maxread;
2570 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2571 }
2572 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2573 return status;
2574}
2575
2576static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2577{
2578 uint32_t *p;
2579 int status = 0;
2580
2581 *res = 1024;
2582 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2583 return -EIO;
2584 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2585 uint64_t maxwrite;
2586 READ_BUF(8);
2587 READ64(maxwrite);
2588 if (maxwrite > 0x7FFFFFFF)
2589 maxwrite = 0x7FFFFFFF;
2590 *res = (uint32_t)maxwrite;
2591 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2592 }
2593 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2594 return status;
2595}
2596
2597static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2598{
2599 uint32_t *p;
2600
2601 *mode = 0;
2602 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2603 return -EIO;
2604 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2605 READ_BUF(4);
2606 READ32(*mode);
2607 *mode &= ~S_IFMT;
2608 bitmap[1] &= ~FATTR4_WORD1_MODE;
2609 }
2610 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2611 return 0;
2612}
2613
2614static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2615{
2616 uint32_t *p;
2617
2618 *nlink = 1;
2619 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2620 return -EIO;
2621 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2622 READ_BUF(4);
2623 READ32(*nlink);
2624 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2625 }
2626 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2627 return 0;
2628}
2629
2630static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2631{
2632 uint32_t len, *p;
2633
2634 *uid = -2;
2635 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2636 return -EIO;
2637 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2638 READ_BUF(4);
2639 READ32(len);
2640 READ_BUF(len);
2641 if (len < XDR_MAX_NETOBJ) {
2642 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2643 dprintk("%s: nfs_map_name_to_uid failed!\n",
2644 __FUNCTION__);
2645 } else
2646 printk(KERN_WARNING "%s: name too long (%u)!\n",
2647 __FUNCTION__, len);
2648 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2649 }
2650 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2651 return 0;
2652}
2653
2654static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2655{
2656 uint32_t len, *p;
2657
2658 *gid = -2;
2659 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2660 return -EIO;
2661 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2662 READ_BUF(4);
2663 READ32(len);
2664 READ_BUF(len);
2665 if (len < XDR_MAX_NETOBJ) {
2666 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2667 dprintk("%s: nfs_map_group_to_gid failed!\n",
2668 __FUNCTION__);
2669 } else
2670 printk(KERN_WARNING "%s: name too long (%u)!\n",
2671 __FUNCTION__, len);
2672 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2673 }
2674 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2675 return 0;
2676}
2677
2678static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2679{
2680 uint32_t major = 0, minor = 0, *p;
2681
2682 *rdev = MKDEV(0,0);
2683 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2684 return -EIO;
2685 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2686 dev_t tmp;
2687
2688 READ_BUF(8);
2689 READ32(major);
2690 READ32(minor);
2691 tmp = MKDEV(major, minor);
2692 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2693 *rdev = tmp;
2694 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2695 }
2696 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2697 return 0;
2698}
2699
2700static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2701{
2702 uint32_t *p;
2703 int status = 0;
2704
2705 *res = 0;
2706 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2707 return -EIO;
2708 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2709 READ_BUF(8);
2710 READ64(*res);
2711 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2712 }
2713 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2714 return status;
2715}
2716
2717static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2718{
2719 uint32_t *p;
2720 int status = 0;
2721
2722 *res = 0;
2723 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2724 return -EIO;
2725 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2726 READ_BUF(8);
2727 READ64(*res);
2728 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2729 }
2730 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2731 return status;
2732}
2733
2734static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2735{
2736 uint32_t *p;
2737 int status = 0;
2738
2739 *res = 0;
2740 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2741 return -EIO;
2742 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2743 READ_BUF(8);
2744 READ64(*res);
2745 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2746 }
2747 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2748 return status;
2749}
2750
2751static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2752{
2753 uint32_t *p;
2754
2755 *used = 0;
2756 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2757 return -EIO;
2758 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2759 READ_BUF(8);
2760 READ64(*used);
2761 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2762 }
2763 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2764 (unsigned long long)*used);
2765 return 0;
2766}
2767
2768static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2769{
2770 uint32_t *p;
2771 uint64_t sec;
2772 uint32_t nsec;
2773
2774 READ_BUF(12);
2775 READ64(sec);
2776 READ32(nsec);
2777 time->tv_sec = (time_t)sec;
2778 time->tv_nsec = (long)nsec;
2779 return 0;
2780}
2781
2782static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2783{
2784 int status = 0;
2785
2786 time->tv_sec = 0;
2787 time->tv_nsec = 0;
2788 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2789 return -EIO;
2790 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2791 status = decode_attr_time(xdr, time);
2792 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2793 }
2794 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2795 return status;
2796}
2797
2798static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2799{
2800 int status = 0;
2801
2802 time->tv_sec = 0;
2803 time->tv_nsec = 0;
2804 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2805 return -EIO;
2806 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2807 status = decode_attr_time(xdr, time);
2808 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2809 }
2810 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2811 return status;
2812}
2813
2814static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2815{
2816 int status = 0;
2817
2818 time->tv_sec = 0;
2819 time->tv_nsec = 0;
2820 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2821 return -EIO;
2822 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2823 status = decode_attr_time(xdr, time);
2824 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2825 }
2826 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2827 return status;
2828}
2829
2830static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2831{
2832 unsigned int attrwords = XDR_QUADLEN(attrlen);
2833 unsigned int nwords = xdr->p - savep;
2834
2835 if (unlikely(attrwords != nwords)) {
2836 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2837 __FUNCTION__,
2838 attrwords << 2,
2839 (attrwords < nwords) ? '<' : '>',
2840 nwords << 2);
2841 return -EIO;
2842 }
2843 return 0;
2844}
2845
2846static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2847{
2848 uint32_t *p;
2849
2850 READ_BUF(20);
2851 READ32(cinfo->atomic);
2852 READ64(cinfo->before);
2853 READ64(cinfo->after);
2854 return 0;
2855}
2856
2857static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2858{
2859 uint32_t *p;
2860 uint32_t supp, acc;
2861 int status;
2862
2863 status = decode_op_hdr(xdr, OP_ACCESS);
2864 if (status)
2865 return status;
2866 READ_BUF(8);
2867 READ32(supp);
2868 READ32(acc);
2869 access->supported = supp;
2870 access->access = acc;
2871 return 0;
2872}
2873
2874static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2875{
2876 uint32_t *p;
2877 int status;
2878
2879 status = decode_op_hdr(xdr, OP_CLOSE);
2880 if (status)
2881 return status;
2882 READ_BUF(sizeof(res->stateid.data));
2883 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2884 return 0;
2885}
2886
2887static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2888{
2889 uint32_t *p;
2890 int status;
2891
2892 status = decode_op_hdr(xdr, OP_COMMIT);
2893 if (status)
2894 return status;
2895 READ_BUF(8);
2896 COPYMEM(res->verf->verifier, 8);
2897 return 0;
2898}
2899
2900static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2901{
2902 uint32_t *p;
2903 uint32_t bmlen;
2904 int status;
2905
2906 status = decode_op_hdr(xdr, OP_CREATE);
2907 if (status)
2908 return status;
2909 if ((status = decode_change_info(xdr, cinfo)))
2910 return status;
2911 READ_BUF(4);
2912 READ32(bmlen);
2913 READ_BUF(bmlen << 2);
2914 return 0;
2915}
2916
2917static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2918{
2919 uint32_t *savep;
2920 uint32_t attrlen,
2921 bitmap[2] = {0};
2922 int status;
2923
2924 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2925 goto xdr_error;
2926 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2927 goto xdr_error;
2928 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2929 goto xdr_error;
2930 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2931 goto xdr_error;
2932 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2933 goto xdr_error;
2934 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2935 goto xdr_error;
2936 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2937 goto xdr_error;
2938 status = verify_attr_len(xdr, savep, attrlen);
2939xdr_error:
16c32b71 2940 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2941 return status;
2942}
2943
2944static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2945{
2946 uint32_t *savep;
2947 uint32_t attrlen,
2948 bitmap[2] = {0};
2949 int status;
2950
2951 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2952 goto xdr_error;
2953 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2954 goto xdr_error;
2955 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2956 goto xdr_error;
2957
2958 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2959 goto xdr_error;
2960 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2961 goto xdr_error;
2962 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2963 goto xdr_error;
2964 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2965 goto xdr_error;
2966 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2967 goto xdr_error;
2968 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2969 goto xdr_error;
2970
2971 status = verify_attr_len(xdr, savep, attrlen);
2972xdr_error:
16c32b71 2973 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2974 return status;
2975}
2976
2977static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2978{
2979 uint32_t *savep;
2980 uint32_t attrlen,
2981 bitmap[2] = {0};
2982 int status;
2983
2984 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2985 goto xdr_error;
2986 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2987 goto xdr_error;
2988 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2989 goto xdr_error;
2990
2991 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2992 goto xdr_error;
2993 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2994 goto xdr_error;
2995
2996 status = verify_attr_len(xdr, savep, attrlen);
2997xdr_error:
16c32b71 2998 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2999 return status;
3000}
3001
3002static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3003{
3004 uint32_t *savep;
3005 uint32_t attrlen,
3006 bitmap[2] = {0},
3007 type;
3008 int status, fmode = 0;
99baf625 3009 uint64_t fileid;
1da177e4
LT		 3010
3011 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3012 goto xdr_error;
3013 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3014 goto xdr_error;
3015
3016 fattr->bitmap[0] = bitmap[0];
3017 fattr->bitmap[1] = bitmap[1];
3018
3019 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3020 goto xdr_error;
3021
3022
3023 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3024 goto xdr_error;
3025 fattr->type = nfs_type2fmt[type].nfs2type;
3026 fmode = nfs_type2fmt[type].mode;
3027
3028 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3029 goto xdr_error;
3030 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3031 goto xdr_error;
8b4bdcf8 3032 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
1da177e4
LT		 3033 goto xdr_error;
3034 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3035 goto xdr_error;
683b57b4 3036 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
7aaa0b3b 3037 struct nfs4_fs_locations,
683b57b4
TM		 3038 fattr))) != 0)
3039 goto xdr_error;
1da177e4
LT		 3040 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3041 goto xdr_error;
3042 fattr->mode |= fmode;
3043 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3044 goto xdr_error;
3045 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
3046 goto xdr_error;
3047 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
3048 goto xdr_error;
3049 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3050 goto xdr_error;
3051 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3052 goto xdr_error;
3053 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3054 goto xdr_error;
3055 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3056 goto xdr_error;
3057 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3058 goto xdr_error;
99baf625
MN		 3059 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3060 goto xdr_error;
3061 if (fattr->fileid == 0 && fileid != 0)
3062 fattr->fileid = fileid;
33801147 3063 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 3064 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4 3065xdr_error:
16c32b71 3066 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
1da177e4
LT		 3067 return status;
3068}
3069
3070
3071static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3072{
3073 uint32_t *savep;
3074 uint32_t attrlen, bitmap[2];
3075 int status;
3076
3077 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3078 goto xdr_error;
3079 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3080 goto xdr_error;
3081 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3082 goto xdr_error;
3083
3084 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3085
3086 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3087 goto xdr_error;
3088 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3089 goto xdr_error;
3090 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3091 goto xdr_error;
3092 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3093 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3094 goto xdr_error;
3095 fsinfo->wtpref = fsinfo->wtmax;
3096
3097 status = verify_attr_len(xdr, savep, attrlen);
3098xdr_error:
16c32b71 3099 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3100 return status;
3101}
3102
3103static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3104{
3105 uint32_t *p;
3106 uint32_t len;
3107 int status;
3108
3109 status = decode_op_hdr(xdr, OP_GETFH);
3110 if (status)
3111 return status;
3112 /* Zero handle first to allow comparisons */
3113 memset(fh, 0, sizeof(*fh));
3114
3115 READ_BUF(4);
3116 READ32(len);
3117 if (len > NFS4_FHSIZE)
3118 return -EIO;
3119 fh->size = len;
3120 READ_BUF(len);
3121 COPYMEM(fh->data, len);
3122 return 0;
3123}
3124
3125static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3126{
3127 int status;
3128
3129 status = decode_op_hdr(xdr, OP_LINK);
3130 if (status)
3131 return status;
3132 return decode_change_info(xdr, cinfo);
3133}
3134
3135/*
3136 * We create the owner, so we know a proper owner.id length is 4.
3137 */
911d1aaf 3138static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
1da177e4 3139{
911d1aaf 3140 uint64_t offset, length, clientid;
1da177e4 3141 uint32_t *p;
911d1aaf 3142 uint32_t namelen, type;
1da177e4
LT		 3143
3144 READ_BUF(32);
911d1aaf
TM		 3145 READ64(offset);
3146 READ64(length);
3147 READ32(type);
3148 if (fl != NULL) {
3149 fl->fl_start = (loff_t)offset;
3150 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3151 if (length == ~(uint64_t)0)
3152 fl->fl_end = OFFSET_MAX;
3153 fl->fl_type = F_WRLCK;
3154 if (type & 1)
3155 fl->fl_type = F_RDLCK;
3156 fl->fl_pid = 0;
3157 }
3158 READ64(clientid);
1da177e4
LT		 3159 READ32(namelen);
3160 READ_BUF(namelen);
1da177e4
LT		 3161 return -NFS4ERR_DENIED;
3162}
3163
911d1aaf 3164static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
1da177e4
LT		 3165{
3166 uint32_t *p;
3167 int status;
3168
3169 status = decode_op_hdr(xdr, OP_LOCK);
3170 if (status == 0) {
911d1aaf
TM		 3171 READ_BUF(sizeof(res->stateid.data));
3172 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
1da177e4 3173 } else if (status == -NFS4ERR_DENIED)
911d1aaf 3174 return decode_lock_denied(xdr, NULL);
1da177e4
LT		 3175 return status;
3176}
3177
911d1aaf 3178static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
1da177e4
LT		 3179{
3180 int status;
3181 status = decode_op_hdr(xdr, OP_LOCKT);
3182 if (status == -NFS4ERR_DENIED)
911d1aaf 3183 return decode_lock_denied(xdr, res->denied);
1da177e4
LT		 3184 return status;
3185}
3186
911d1aaf 3187static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
1da177e4
LT		 3188{
3189 uint32_t *p;
3190 int status;
3191
3192 status = decode_op_hdr(xdr, OP_LOCKU);
3193 if (status == 0) {
911d1aaf
TM		 3194 READ_BUF(sizeof(res->stateid.data));
3195 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
1da177e4
LT		 3196 }
3197 return status;
3198}
3199
3200static int decode_lookup(struct xdr_stream *xdr)
3201{
3202 return decode_op_hdr(xdr, OP_LOOKUP);
3203}
3204
3205/* This is too sick! */
3206static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3207{
3208 uint32_t *p;
3209 uint32_t limit_type, nblocks, blocksize;
3210
3211 READ_BUF(12);
3212 READ32(limit_type);
3213 switch (limit_type) {
3214 case 1:
3215 READ64(*maxsize);
3216 break;
3217 case 2:
3218 READ32(nblocks);
3219 READ32(blocksize);
3220 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3221 }
3222 return 0;
3223}
3224
3225static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3226{
3227 uint32_t *p;
3228 uint32_t delegation_type;
3229
3230 READ_BUF(4);
3231 READ32(delegation_type);
3232 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3233 res->delegation_type = 0;
3234 return 0;
3235 }
3236 READ_BUF(20);
3237 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3238 READ32(res->do_recall);
3239 switch (delegation_type) {
3240 case NFS4_OPEN_DELEGATE_READ:
3241 res->delegation_type = FMODE_READ;
3242 break;
3243 case NFS4_OPEN_DELEGATE_WRITE:
3244 res->delegation_type = FMODE_WRITE|FMODE_READ;
3245 if (decode_space_limit(xdr, &res->maxsize) < 0)
3246 return -EIO;
3247 }
3248 return decode_ace(xdr, NULL, res->server->nfs4_state);
3249}
3250
3251static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3252{
3253 uint32_t *p;
3254 uint32_t bmlen;
3255 int status;
3256
3257 status = decode_op_hdr(xdr, OP_OPEN);
3258 if (status)
3259 return status;
3260 READ_BUF(sizeof(res->stateid.data));
3261 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3262
3263 decode_change_info(xdr, &res->cinfo);
3264
3265 READ_BUF(8);
3266 READ32(res->rflags);
3267 READ32(bmlen);
3268 if (bmlen > 10)
3269 goto xdr_error;
3270
3271 READ_BUF(bmlen << 2);
3272 p += bmlen;
3273 return decode_delegation(xdr, res);
3274xdr_error:
16c32b71 3275 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
1da177e4
LT		 3276 return -EIO;
3277}
3278
3279static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3280{
3281 uint32_t *p;
3282 int status;
3283
3284 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3285 if (status)
3286 return status;
3287 READ_BUF(sizeof(res->stateid.data));
3288 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3289 return 0;
3290}
3291
3292static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3293{
3294 uint32_t *p;
3295 int status;
3296
3297 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3298 if (status)
3299 return status;
3300 READ_BUF(sizeof(res->stateid.data));
3301 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3302 return 0;
3303}
3304
3305static int decode_putfh(struct xdr_stream *xdr)
3306{
3307 return decode_op_hdr(xdr, OP_PUTFH);
3308}
3309
3310static int decode_putrootfh(struct xdr_stream *xdr)
3311{
3312 return decode_op_hdr(xdr, OP_PUTROOTFH);
3313}
3314
3315static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3316{
3317 struct kvec *iov = req->rq_rcv_buf.head;
3318 uint32_t *p;
3319 uint32_t count, eof, recvd, hdrlen;
3320 int status;
3321
3322 status = decode_op_hdr(xdr, OP_READ);
3323 if (status)
3324 return status;
3325 READ_BUF(8);
3326 READ32(eof);
3327 READ32(count);
3328 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3329 recvd = req->rq_rcv_buf.len - hdrlen;
3330 if (count > recvd) {
3331 printk(KERN_WARNING "NFS: server cheating in read reply: "
3332 "count %u > recvd %u\n", count, recvd);
3333 count = recvd;
3334 eof = 0;
3335 }
3336 xdr_read_pages(xdr, count);
3337 res->eof = eof;
3338 res->count = count;
3339 return 0;
3340}
3341
3342static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3343{
3344 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3345 struct page *page = *rcvbuf->pages;
3346 struct kvec *iov = rcvbuf->head;
3347 unsigned int nr, pglen = rcvbuf->page_len;
3348 uint32_t *end, *entry, *p, *kaddr;
3349 uint32_t len, attrlen;
3350 int hdrlen, recvd, status;
3351
3352 status = decode_op_hdr(xdr, OP_READDIR);
3353 if (status)
3354 return status;
3355 READ_BUF(8);
3356 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3357 dprintk("%s: verifier = 0x%x%x\n",
3358 __FUNCTION__,
3359 ((u32 *)readdir->verifier.data)[0],
3360 ((u32 *)readdir->verifier.data)[1]);
3361
1da177e4
LT		 3362
3363 hdrlen = (char *) p - (char *) iov->iov_base;
3364 recvd = rcvbuf->len - hdrlen;
3365 if (pglen > recvd)
3366 pglen = recvd;
3367 xdr_read_pages(xdr, pglen);
3368
3369 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3370 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3371 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3372 entry = p;
3373 for (nr = 0; *p++; nr++) {
3374 if (p + 3 > end)
3375 goto short_pkt;
eadf4598 3376 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3377 p += 2; /* cookie */
3378 len = ntohl(*p++); /* filename length */
3379 if (len > NFS4_MAXNAMLEN) {
3380 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3381 goto err_unmap;
3382 }
eadf4598 3383 dprintk("filename = %*s\n", len, (char *)p);
1da177e4
LT		 3384 p += XDR_QUADLEN(len);
3385 if (p + 1 > end)
3386 goto short_pkt;
3387 len = ntohl(*p++); /* bitmap length */
3388 p += len;
3389 if (p + 1 > end)
3390 goto short_pkt;
3391 attrlen = XDR_QUADLEN(ntohl(*p++));
3392 p += attrlen; /* attributes */
3393 if (p + 2 > end)
3394 goto short_pkt;
3395 entry = p;
3396 }
3397 if (!nr && (entry[0] != 0 || entry[1] == 0))
3398 goto short_pkt;
3399out:
3400 kunmap_atomic(kaddr, KM_USER0);
3401 return 0;
3402short_pkt:
eadf4598 3403 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3404 entry[0] = entry[1] = 0;
3405 /* truncate listing ? */
3406 if (!nr) {
3407 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3408 entry[1] = 1;
3409 }
3410 goto out;
3411err_unmap:
3412 kunmap_atomic(kaddr, KM_USER0);
3413 return -errno_NFSERR_IO;
3414}
3415
3416static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3417{
3418 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3419 struct kvec *iov = rcvbuf->head;
3420 int hdrlen, len, recvd;
3421 uint32_t *p;
3422 char *kaddr;
3423 int status;
3424
3425 status = decode_op_hdr(xdr, OP_READLINK);
3426 if (status)
3427 return status;
3428
3429 /* Convert length of symlink */
3430 READ_BUF(4);
3431 READ32(len);
3432 if (len >= rcvbuf->page_len || len <= 0) {
3433 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3434 return -ENAMETOOLONG;
3435 }
3436 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3437 recvd = req->rq_rcv_buf.len - hdrlen;
3438 if (recvd < len) {
3439 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3440 "count %u > recvd %u\n", len, recvd);
3441 return -EIO;
3442 }
3443 xdr_read_pages(xdr, len);
3444 /*
3445 * The XDR encode routine has set things up so that
3446 * the link text will be copied directly into the
3447 * buffer. We just have to do overflow-checking,
3448 * and and null-terminate the text (the VFS expects
3449 * null-termination).
3450 */
3451 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3452 kaddr[len+rcvbuf->page_base] = '\0';
3453 kunmap_atomic(kaddr, KM_USER0);
3454 return 0;
3455}
3456
3457static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3458{
3459 int status;
3460
3461 status = decode_op_hdr(xdr, OP_REMOVE);
3462 if (status)
3463 goto out;
3464 status = decode_change_info(xdr, cinfo);
3465out:
3466 return status;
3467}
3468
3469static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3470 struct nfs4_change_info *new_cinfo)
3471{
3472 int status;
3473
3474 status = decode_op_hdr(xdr, OP_RENAME);
3475 if (status)
3476 goto out;
3477 if ((status = decode_change_info(xdr, old_cinfo)))
3478 goto out;
3479 status = decode_change_info(xdr, new_cinfo);
3480out:
3481 return status;
3482}
3483
3484static int decode_renew(struct xdr_stream *xdr)
3485{
3486 return decode_op_hdr(xdr, OP_RENEW);
3487}
3488
56ae19f3
TM		 3489static int
3490decode_restorefh(struct xdr_stream *xdr)
3491{
3492 return decode_op_hdr(xdr, OP_RESTOREFH);
3493}
3494
029d105e
BF		 3495static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3496 size_t *acl_len)
3497{
3498 uint32_t *savep;
3499 uint32_t attrlen,
3500 bitmap[2] = {0};
3501 struct kvec *iov = req->rq_rcv_buf.head;
3502 int status;
3503
3504 *acl_len = 0;
3505 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3506 goto out;
3507 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3508 goto out;
3509 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3510 goto out;
3511
3512 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3513 return -EIO;
3514 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3515 int hdrlen, recvd;
3516
3517 /* We ignore &savep and don't do consistency checks on
3518 * the attr length. Let userspace figure it out.... */
3519 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3520 recvd = req->rq_rcv_buf.len - hdrlen;
3521 if (attrlen > recvd) {
3522 printk(KERN_WARNING "NFS: server cheating in getattr"
3523 " acl reply: attrlen %u > recvd %u\n",
3524 attrlen, recvd);
3525 return -EINVAL;
3526 }
c04871e6 3527 xdr_read_pages(xdr, attrlen);
029d105e 3528 *acl_len = attrlen;
8c233cf9
BF		 3529 } else
3530 status = -EOPNOTSUPP;
029d105e
BF		 3531
3532out:
3533 return status;
3534}
3535
1da177e4
LT		 3536static int
3537decode_savefh(struct xdr_stream *xdr)
3538{
3539 return decode_op_hdr(xdr, OP_SAVEFH);
3540}
3541
3542static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3543{
3544 uint32_t *p;
3545 uint32_t bmlen;
3546 int status;
3547
3548
3549 status = decode_op_hdr(xdr, OP_SETATTR);
3550 if (status)
3551 return status;
3552 READ_BUF(4);
3553 READ32(bmlen);
3554 READ_BUF(bmlen << 2);
3555 return 0;
3556}
3557
3558static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3559{
3560 uint32_t *p;
3561 uint32_t opnum;
3562 int32_t nfserr;
3563
3564 READ_BUF(8);
3565 READ32(opnum);
3566 if (opnum != OP_SETCLIENTID) {
3567 printk(KERN_NOTICE
3568 "nfs4_decode_setclientid: Server returned operation"
3569 " %d\n", opnum);
3570 return -EIO;
3571 }
3572 READ32(nfserr);
3573 if (nfserr == NFS_OK) {
3574 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3575 READ64(clp->cl_clientid);
3576 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3577 } else if (nfserr == NFSERR_CLID_INUSE) {
3578 uint32_t len;
3579
3580 /* skip netid string */
3581 READ_BUF(4);
3582 READ32(len);
3583 READ_BUF(len);
3584
3585 /* skip uaddr string */
3586 READ_BUF(4);
3587 READ32(len);
3588 READ_BUF(len);
3589 return -NFSERR_CLID_INUSE;
3590 } else
3591 return -nfs_stat_to_errno(nfserr);
3592
3593 return 0;
3594}
3595
3596static int decode_setclientid_confirm(struct xdr_stream *xdr)
3597{
3598 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3599}
3600
3601static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3602{
3603 uint32_t *p;
3604 int status;
3605
3606 status = decode_op_hdr(xdr, OP_WRITE);
3607 if (status)
3608 return status;
3609
3610 READ_BUF(16);
3611 READ32(res->count);
3612 READ32(res->verf->committed);
3613 COPYMEM(res->verf->verifier, 8);
3614 return 0;
3615}
3616
3617static int decode_delegreturn(struct xdr_stream *xdr)
3618{
3619 return decode_op_hdr(xdr, OP_DELEGRETURN);
3620}
3621
3622/*
3623 * Decode OPEN_DOWNGRADE response
3624 */
3625static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3626{
3627 struct xdr_stream xdr;
3628 struct compound_hdr hdr;
3629 int status;
3630
3631 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3632 status = decode_compound_hdr(&xdr, &hdr);
3633 if (status)
3634 goto out;
3635 status = decode_putfh(&xdr);
3636 if (status)
3637 goto out;
3638 status = decode_open_downgrade(&xdr, res);
516a6af6
TM		 3639 if (status != 0)
3640 goto out;
3641 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3642out:
3643 return status;
3644}
3645
3646/*
3647 * END OF "GENERIC" DECODE ROUTINES.
3648 */
3649
3650/*
3651 * Decode ACCESS response
3652 */
3653static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3654{
3655 struct xdr_stream xdr;
3656 struct compound_hdr hdr;
3657 int status;
3658
3659 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3660 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3661 goto out;
3662 if ((status = decode_putfh(&xdr)) == 0)
3663 status = decode_access(&xdr, res);
3664out:
3665 return status;
3666}
3667
3668/*
3669 * Decode LOOKUP response
3670 */
3671static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3672{
3673 struct xdr_stream xdr;
3674 struct compound_hdr hdr;
3675 int status;
3676
3677 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3678 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3679 goto out;
3680 if ((status = decode_putfh(&xdr)) != 0)
3681 goto out;
3682 if ((status = decode_lookup(&xdr)) != 0)
3683 goto out;
3684 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3685 goto out;
3686 status = decode_getfattr(&xdr, res->fattr, res->server);
3687out:
3688 return status;
3689}
3690
3691/*
3692 * Decode LOOKUP_ROOT response
3693 */
3694static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3695{
3696 struct xdr_stream xdr;
3697 struct compound_hdr hdr;
3698 int status;
3699
3700 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3701 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3702 goto out;
3703 if ((status = decode_putrootfh(&xdr)) != 0)
3704 goto out;
3705 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3706 status = decode_getfattr(&xdr, res->fattr, res->server);
3707out:
3708 return status;
3709}
3710
3711/*
3712 * Decode REMOVE response
3713 */
16e42959 3714static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_remove_res *res)
1da177e4
LT		 3715{
3716 struct xdr_stream xdr;
3717 struct compound_hdr hdr;
3718 int status;
3719
3720 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3721 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3722 goto out;
16e42959
TM		 3723 if ((status = decode_putfh(&xdr)) != 0)
3724 goto out;
3725 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3726 goto out;
3727 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3728out:
3729 return status;
3730}
3731
3732/*
3733 * Decode RENAME response
3734 */
3735static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3736{
3737 struct xdr_stream xdr;
3738 struct compound_hdr hdr;
3739 int status;
3740
3741 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3742 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3743 goto out;
3744 if ((status = decode_putfh(&xdr)) != 0)
3745 goto out;
3746 if ((status = decode_savefh(&xdr)) != 0)
3747 goto out;
3748 if ((status = decode_putfh(&xdr)) != 0)
3749 goto out;
6caf2c82
TM		 3750 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3751 goto out;
3752 /* Current FH is target directory */
3753 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3754 goto out;
3755 if ((status = decode_restorefh(&xdr)) != 0)
3756 goto out;
3757 decode_getfattr(&xdr, res->old_fattr, res->server);
1da177e4
LT		 3758out:
3759 return status;
3760}
3761
3762/*
3763 * Decode LINK response
3764 */
91ba2eee 3765static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
1da177e4
LT		 3766{
3767 struct xdr_stream xdr;
3768 struct compound_hdr hdr;
3769 int status;
3770
3771 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3772 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3773 goto out;
3774 if ((status = decode_putfh(&xdr)) != 0)
3775 goto out;
3776 if ((status = decode_savefh(&xdr)) != 0)
3777 goto out;
3778 if ((status = decode_putfh(&xdr)) != 0)
3779 goto out;
91ba2eee
TM		 3780 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3781 goto out;
3782 /*
3783 * Note order: OP_LINK leaves the directory as the current
3784 * filehandle.
3785 */
3786 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3787 goto out;
3788 if ((status = decode_restorefh(&xdr)) != 0)
3789 goto out;
3790 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3791out:
3792 return status;
3793}
3794
3795/*
3796 * Decode CREATE response
3797 */
3798static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3799{
3800 struct xdr_stream xdr;
3801 struct compound_hdr hdr;
3802 int status;
3803
3804 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3805 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3806 goto out;
3807 if ((status = decode_putfh(&xdr)) != 0)
3808 goto out;
56ae19f3
TM		 3809 if ((status = decode_savefh(&xdr)) != 0)
3810 goto out;
1da177e4
LT		 3811 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3812 goto out;
3813 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3814 goto out;
56ae19f3
TM		 3815 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3816 goto out;
3817 if ((status = decode_restorefh(&xdr)) != 0)
3818 goto out;
3819 decode_getfattr(&xdr, res->dir_fattr, res->server);
1da177e4
LT		 3820out:
3821 return status;
3822}
3823
3824/*
3825 * Decode SYMLINK response
3826 */
3827static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3828{
3829 return nfs4_xdr_dec_create(rqstp, p, res);
3830}
3831
3832/*
3833 * Decode GETATTR response
3834 */
3835static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3836{
3837 struct xdr_stream xdr;
3838 struct compound_hdr hdr;
3839 int status;
3840
3841 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3842 status = decode_compound_hdr(&xdr, &hdr);
3843 if (status)
3844 goto out;
3845 status = decode_putfh(&xdr);
3846 if (status)
3847 goto out;
3848 status = decode_getfattr(&xdr, res->fattr, res->server);
3849out:
3850 return status;
3851
3852}
3853
23ec6965
BF		 3854/*
3855 * Encode an SETACL request
3856 */
3857static int
3858nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3859{
3860 struct xdr_stream xdr;
3861 struct compound_hdr hdr = {
3862 .nops = 2,
3863 };
3864 int status;
3865
3866 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3867 encode_compound_hdr(&xdr, &hdr);
3868 status = encode_putfh(&xdr, args->fh);
3869 if (status)
3870 goto out;
3871 status = encode_setacl(&xdr, args);
3872out:
3873 return status;
3874}
3875/*
3876 * Decode SETACL response
3877 */
3878static int
3879nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3880{
3881 struct xdr_stream xdr;
3882 struct compound_hdr hdr;
3883 int status;
3884
3885 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3886 status = decode_compound_hdr(&xdr, &hdr);
3887 if (status)
3888 goto out;
3889 status = decode_putfh(&xdr);
3890 if (status)
3891 goto out;
3892 status = decode_setattr(&xdr, res);
3893out:
3894 return status;
3895}
1da177e4 3896
029d105e
BF		 3897/*
3898 * Decode GETACL response
3899 */
3900static int
3901nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3902{
3903 struct xdr_stream xdr;
3904 struct compound_hdr hdr;
3905 int status;
3906
3907 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3908 status = decode_compound_hdr(&xdr, &hdr);
3909 if (status)
3910 goto out;
3911 status = decode_putfh(&xdr);
3912 if (status)
3913 goto out;
3914 status = decode_getacl(&xdr, rqstp, acl_len);
3915
3916out:
3917 return status;
3918}
3919
1da177e4
LT		 3920/*
3921 * Decode CLOSE response
3922 */
3923static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3924{
3925 struct xdr_stream xdr;
3926 struct compound_hdr hdr;
3927 int status;
3928
3929 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3930 status = decode_compound_hdr(&xdr, &hdr);
3931 if (status)
3932 goto out;
3933 status = decode_putfh(&xdr);
3934 if (status)
3935 goto out;
3936 status = decode_close(&xdr, res);
516a6af6
TM		 3937 if (status != 0)
3938 goto out;
3939 /*
3940 * Note: Server may do delete on close for this file
3941 * in which case the getattr call will fail with
3942 * an ESTALE error. Shouldn't be a problem,
3943 * though, since fattr->valid will remain unset.
3944 */
3945 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3946out:
3947 return status;
3948}
3949
3950/*
3951 * Decode OPEN response
3952 */
3953static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3954{
3955 struct xdr_stream xdr;
3956 struct compound_hdr hdr;
3957 int status;
3958
3959 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3960 status = decode_compound_hdr(&xdr, &hdr);
3961 if (status)
3962 goto out;
3963 status = decode_putfh(&xdr);
3964 if (status)
3965 goto out;
56ae19f3
TM		 3966 status = decode_savefh(&xdr);
3967 if (status)
3968 goto out;
1da177e4
LT		 3969 status = decode_open(&xdr, res);
3970 if (status)
3971 goto out;
3972 status = decode_getfh(&xdr, &res->fh);
3973 if (status)
3974 goto out;
56ae19f3
TM		 3975 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3976 goto out;
3977 if ((status = decode_restorefh(&xdr)) != 0)
3978 goto out;
3979 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3980out:
3981 return status;
3982}
3983
3984/*
3985 * Decode OPEN_CONFIRM response
3986 */
3987static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3988{
3989 struct xdr_stream xdr;
3990 struct compound_hdr hdr;
3991 int status;
3992
3993 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3994 status = decode_compound_hdr(&xdr, &hdr);
3995 if (status)
3996 goto out;
3997 status = decode_putfh(&xdr);
3998 if (status)
3999 goto out;
4000 status = decode_open_confirm(&xdr, res);
4001out:
4002 return status;
4003}
4004
4005/*
4006 * Decode OPEN response
4007 */
4008static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
4009{
4010 struct xdr_stream xdr;
4011 struct compound_hdr hdr;
4012 int status;
4013
4014 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4015 status = decode_compound_hdr(&xdr, &hdr);
4016 if (status)
4017 goto out;
4018 status = decode_putfh(&xdr);
4019 if (status)
4020 goto out;
4021 status = decode_open(&xdr, res);
864472e9
TM		 4022 if (status)
4023 goto out;
4024 decode_getfattr(&xdr, res->f_attr, res->server);
1da177e4
LT		 4025out:
4026 return status;
4027}
4028
4029/*
4030 * Decode SETATTR response
4031 */
4032static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
4033{
4034 struct xdr_stream xdr;
4035 struct compound_hdr hdr;
4036 int status;
4037
4038 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4039 status = decode_compound_hdr(&xdr, &hdr);
4040 if (status)
4041 goto out;
4042 status = decode_putfh(&xdr);
4043 if (status)
4044 goto out;
4045 status = decode_setattr(&xdr, res);
4046 if (status)
4047 goto out;
4048 status = decode_getfattr(&xdr, res->fattr, res->server);
4049 if (status == NFS4ERR_DELAY)
4050 status = 0;
4051out:
4052 return status;
4053}
4054
4055/*
4056 * Decode LOCK response
4057 */
911d1aaf 4058static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lock_res *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_lock(&xdr, res);
4072out:
4073 return status;
4074}
4075
4076/*
4077 * Decode LOCKT response
4078 */
911d1aaf 4079static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockt_res *res)
1da177e4
LT		 4080{
4081 struct xdr_stream xdr;
4082 struct compound_hdr hdr;
4083 int status;
4084
4085 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4086 status = decode_compound_hdr(&xdr, &hdr);
4087 if (status)
4088 goto out;
4089 status = decode_putfh(&xdr);
4090 if (status)
4091 goto out;
4092 status = decode_lockt(&xdr, res);
4093out:
4094 return status;
4095}
4096
4097/*
4098 * Decode LOCKU response
4099 */
911d1aaf 4100static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_locku_res *res)
1da177e4
LT		 4101{
4102 struct xdr_stream xdr;
4103 struct compound_hdr hdr;
4104 int status;
4105
4106 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4107 status = decode_compound_hdr(&xdr, &hdr);
4108 if (status)
4109 goto out;
4110 status = decode_putfh(&xdr);
4111 if (status)
4112 goto out;
4113 status = decode_locku(&xdr, res);
4114out:
4115 return status;
4116}
4117
4118/*
4119 * Decode READLINK response
4120 */
4121static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
4122{
4123 struct xdr_stream xdr;
4124 struct compound_hdr hdr;
4125 int status;
4126
4127 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4128 status = decode_compound_hdr(&xdr, &hdr);
4129 if (status)
4130 goto out;
4131 status = decode_putfh(&xdr);
4132 if (status)
4133 goto out;
4134 status = decode_readlink(&xdr, rqstp);
4135out:
4136 return status;
4137}
4138
4139/*
4140 * Decode READDIR response
4141 */
4142static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
4143{
4144 struct xdr_stream xdr;
4145 struct compound_hdr hdr;
4146 int status;
4147
4148 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4149 status = decode_compound_hdr(&xdr, &hdr);
4150 if (status)
4151 goto out;
4152 status = decode_putfh(&xdr);
4153 if (status)
4154 goto out;
4155 status = decode_readdir(&xdr, rqstp, res);
4156out:
4157 return status;
4158}
4159
4160/*
4161 * Decode Read response
4162 */
4163static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
4164{
4165 struct xdr_stream xdr;
4166 struct compound_hdr hdr;
4167 int status;
4168
4169 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4170 status = decode_compound_hdr(&xdr, &hdr);
4171 if (status)
4172 goto out;
4173 status = decode_putfh(&xdr);
4174 if (status)
4175 goto out;
4176 status = decode_read(&xdr, rqstp, res);
4177 if (!status)
4178 status = res->count;
4179out:
4180 return status;
4181}
4182
4183/*
4184 * Decode WRITE response
4185 */
4186static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4187{
4188 struct xdr_stream xdr;
4189 struct compound_hdr hdr;
4190 int status;
4191
4192 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4193 status = decode_compound_hdr(&xdr, &hdr);
4194 if (status)
4195 goto out;
4196 status = decode_putfh(&xdr);
4197 if (status)
4198 goto out;
4199 status = decode_write(&xdr, res);
4f9838c7
TM		 4200 if (status)
4201 goto out;
4202 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4203 if (!status)
4204 status = res->count;
4205out:
4206 return status;
4207}
4208
4209/*
4210 * Decode COMMIT response
4211 */
4212static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
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_commit(&xdr, res);
4f9838c7
TM		 4226 if (status)
4227 goto out;
4228 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4229out:
4230 return status;
4231}
4232
4233/*
4234 * FSINFO request
4235 */
4236static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4237{
4238 struct xdr_stream xdr;
4239 struct compound_hdr hdr;
4240 int status;
4241
4242 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4243 status = decode_compound_hdr(&xdr, &hdr);
4244 if (!status)
4245 status = decode_putfh(&xdr);
4246 if (!status)
4247 status = decode_fsinfo(&xdr, fsinfo);
4248 if (!status)
4249 status = -nfs_stat_to_errno(hdr.status);
4250 return status;
4251}
4252
4253/*
4254 * PATHCONF request
4255 */
4256static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4257{
4258 struct xdr_stream xdr;
4259 struct compound_hdr hdr;
4260 int status;
4261
4262 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4263 status = decode_compound_hdr(&xdr, &hdr);
4264 if (!status)
4265 status = decode_putfh(&xdr);
4266 if (!status)
4267 status = decode_pathconf(&xdr, pathconf);
4268 return status;
4269}
4270
4271/*
4272 * STATFS request
4273 */
4274static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4275{
4276 struct xdr_stream xdr;
4277 struct compound_hdr hdr;
4278 int status;
4279
4280 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4281 status = decode_compound_hdr(&xdr, &hdr);
4282 if (!status)
4283 status = decode_putfh(&xdr);
4284 if (!status)
4285 status = decode_statfs(&xdr, fsstat);
4286 return status;
4287}
4288
4289/*
4290 * GETATTR_BITMAP request
4291 */
4292static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4293{
4294 struct xdr_stream xdr;
4295 struct compound_hdr hdr;
4296 int status;
4297
4298 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4299 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4300 goto out;
4301 if ((status = decode_putfh(&xdr)) != 0)
4302 goto out;
4303 status = decode_server_caps(&xdr, res);
4304out:
4305 return status;
4306}
4307
4308/*
4309 * Decode RENEW response
4310 */
4311static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4312{
4313 struct xdr_stream xdr;
4314 struct compound_hdr hdr;
4315 int status;
4316
4317 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4318 status = decode_compound_hdr(&xdr, &hdr);
4319 if (!status)
4320 status = decode_renew(&xdr);
4321 return status;
4322}
4323
4324/*
4325 * a SETCLIENTID request
4326 */
4327static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4328 struct nfs4_client *clp)
4329{
4330 struct xdr_stream xdr;
4331 struct compound_hdr hdr;
4332 int status;
4333
4334 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4335 status = decode_compound_hdr(&xdr, &hdr);
4336 if (!status)
4337 status = decode_setclientid(&xdr, clp);
4338 if (!status)
4339 status = -nfs_stat_to_errno(hdr.status);
4340 return status;
4341}
4342
4343/*
4344 * a SETCLIENTID_CONFIRM request
4345 */
4346static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4347{
4348 struct xdr_stream xdr;
4349 struct compound_hdr hdr;
4350 int status;
4351
4352 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4353 status = decode_compound_hdr(&xdr, &hdr);
4354 if (!status)
4355 status = decode_setclientid_confirm(&xdr);
4356 if (!status)
4357 status = decode_putrootfh(&xdr);
4358 if (!status)
4359 status = decode_fsinfo(&xdr, fsinfo);
4360 if (!status)
4361 status = -nfs_stat_to_errno(hdr.status);
4362 return status;
4363}
4364
4365/*
4366 * DELEGRETURN request
4367 */
fa178f29 4368static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_delegreturnres *res)
1da177e4
LT		 4369{
4370 struct xdr_stream xdr;
4371 struct compound_hdr hdr;
4372 int status;
4373
4374 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4375 status = decode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 4376 if (status != 0)
4377 goto out;
4378 status = decode_putfh(&xdr);
4379 if (status != 0)
4380 goto out;
4381 status = decode_delegreturn(&xdr);
4382 decode_getfattr(&xdr, res->fattr, res->server);
4383out:
1da177e4
LT		 4384 return status;
4385}
4386
683b57b4
TM		 4387/*
4388 * FS_LOCATIONS request
4389 */
7aaa0b3b 4390static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs_locations *res)
683b57b4
TM		 4391{
4392 struct xdr_stream xdr;
4393 struct compound_hdr hdr;
4394 int status;
4395
4396 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4397 status = decode_compound_hdr(&xdr, &hdr);
4398 if (status != 0)
4399 goto out;
4400 if ((status = decode_putfh(&xdr)) != 0)
4401 goto out;
4402 if ((status = decode_lookup(&xdr)) != 0)
4403 goto out;
4404 xdr_enter_page(&xdr, PAGE_SIZE);
4405 status = decode_getfattr(&xdr, &res->fattr, res->server);
4406out:
4407 return status;
4408}
4409
1da177e4
LT		 4410uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4411{
4412 uint32_t bitmap[2] = {0};
4413 uint32_t len;
4414
4415 if (!*p++) {
4416 if (!*p)
4417 return ERR_PTR(-EAGAIN);
4418 entry->eof = 1;
4419 return ERR_PTR(-EBADCOOKIE);
4420 }
4421
4422 entry->prev_cookie = entry->cookie;
4423 p = xdr_decode_hyper(p, &entry->cookie);
4424 entry->len = ntohl(*p++);
4425 entry->name = (const char *) p;
4426 p += XDR_QUADLEN(entry->len);
4427
4428 /*
4429 * In case the server doesn't return an inode number,
4430 * we fake one here. (We don't use inode number 0,
4431 * since glibc seems to choke on it...)
4432 */
4433 entry->ino = 1;
4434
4435 len = ntohl(*p++); /* bitmap length */
4436 if (len-- > 0) {
4437 bitmap[0] = ntohl(*p++);
4438 if (len-- > 0) {
4439 bitmap[1] = ntohl(*p++);
4440 p += len;
4441 }
4442 }
4443 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4444 if (len > 0) {
97d312d0
MN		 4445 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4446 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4447 /* Ignore the return value of rdattr_error for now */
4448 p++;
4449 len--;
4450 }
1da177e4
LT		 4451 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4452 xdr_decode_hyper(p, &entry->ino);
4453 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4454 xdr_decode_hyper(p, &entry->ino);
4455 p += len;
4456 }
4457
4458 entry->eof = !p[0] && p[1];
4459 return p;
4460}
4461
4462/*
4463 * We need to translate between nfs status return values and
4464 * the local errno values which may not be the same.
4465 */
4466static struct {
4467 int stat;
4468 int errno;
4469} nfs_errtbl[] = {
4470 { NFS4_OK, 0 },
4471 { NFS4ERR_PERM, EPERM },
4472 { NFS4ERR_NOENT, ENOENT },
4473 { NFS4ERR_IO, errno_NFSERR_IO },
4474 { NFS4ERR_NXIO, ENXIO },
4475 { NFS4ERR_ACCESS, EACCES },
4476 { NFS4ERR_EXIST, EEXIST },
4477 { NFS4ERR_XDEV, EXDEV },
4478 { NFS4ERR_NOTDIR, ENOTDIR },
4479 { NFS4ERR_ISDIR, EISDIR },
4480 { NFS4ERR_INVAL, EINVAL },
4481 { NFS4ERR_FBIG, EFBIG },
4482 { NFS4ERR_NOSPC, ENOSPC },
4483 { NFS4ERR_ROFS, EROFS },
4484 { NFS4ERR_MLINK, EMLINK },
4485 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4486 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4487 { NFS4ERR_DQUOT, EDQUOT },
4488 { NFS4ERR_STALE, ESTALE },
4489 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4490 { NFS4ERR_BADOWNER, EINVAL },
4491 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4492 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4493 { NFS4ERR_NOTSUPP, ENOTSUPP },
4494 { NFS4ERR_TOOSMALL, ETOOSMALL },
4495 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4496 { NFS4ERR_BADTYPE, EBADTYPE },
4497 { NFS4ERR_LOCKED, EAGAIN },
4498 { NFS4ERR_RESOURCE, EREMOTEIO },
4499 { NFS4ERR_SYMLINK, ELOOP },
4500 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4501 { NFS4ERR_DEADLOCK, EDEADLK },
4502 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4503 * to be handled by a
4504 * middle-layer.
4505 */
4506 { -1, EIO }
4507};
4508
4509/*
4510 * Convert an NFS error code to a local one.
4511 * This one is used jointly by NFSv2 and NFSv3.
4512 */
4513static int
4514nfs_stat_to_errno(int stat)
4515{
4516 int i;
4517 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4518 if (nfs_errtbl[i].stat == stat)
4519 return nfs_errtbl[i].errno;
4520 }
4521 if (stat <= 10000 || stat > 10100) {
4522 /* The server is looney tunes. */
4523 return ESERVERFAULT;
4524 }
4525 /* If we cannot translate the error, the recovery routines should
4526 * handle it.
4527 * Note: remaining NFSv4 error codes have values > 10000, so should
4528 * not conflict with native Linux error codes.
4529 */
4530 return stat;
4531}
4532
4533#ifndef MAX
4534# define MAX(a, b) (((a) > (b))? (a) : (b))
4535#endif
4536
4537#define PROC(proc, argtype, restype) \
4538[NFSPROC4_CLNT_##proc] = { \
4539 .p_proc = NFSPROC4_COMPOUND, \
4540 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4541 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4542 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
cc0175c1
CL		 4543 .p_statidx = NFSPROC4_CLNT_##proc, \
4544 .p_name = #proc, \
1da177e4
LT		 4545 }
4546
4547struct rpc_procinfo nfs4_procedures[] = {
4548 PROC(READ, enc_read, dec_read),
4549 PROC(WRITE, enc_write, dec_write),
4550 PROC(COMMIT, enc_commit, dec_commit),
4551 PROC(OPEN, enc_open, dec_open),
4552 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4553 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4554 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4555 PROC(CLOSE, enc_close, dec_close),
4556 PROC(SETATTR, enc_setattr, dec_setattr),
4557 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4558 PROC(RENEW, enc_renew, dec_renew),
4559 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4560 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4561 PROC(LOCK, enc_lock, dec_lock),
4562 PROC(LOCKT, enc_lockt, dec_lockt),
4563 PROC(LOCKU, enc_locku, dec_locku),
4564 PROC(ACCESS, enc_access, dec_access),
4565 PROC(GETATTR, enc_getattr, dec_getattr),
4566 PROC(LOOKUP, enc_lookup, dec_lookup),
4567 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4568 PROC(REMOVE, enc_remove, dec_remove),
4569 PROC(RENAME, enc_rename, dec_rename),
4570 PROC(LINK, enc_link, dec_link),
4571 PROC(SYMLINK, enc_symlink, dec_symlink),
4572 PROC(CREATE, enc_create, dec_create),
4573 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4574 PROC(STATFS, enc_statfs, dec_statfs),
4575 PROC(READLINK, enc_readlink, dec_readlink),
4576 PROC(READDIR, enc_readdir, dec_readdir),
4577 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4578 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4579 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4580 PROC(SETACL, enc_setacl, dec_setacl),
683b57b4 4581 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
1da177e4
LT		 4582};
4583
4584struct rpc_version nfs_version4 = {
4585 .number = 4,
e8c96f8c 4586 .nrprocs = ARRAY_SIZE(nfs4_procedures),
1da177e4
LT		 4587 .procs = nfs4_procedures
4588};
4589
4590/*
4591 * Local variables:
4592 * c-basic-offset: 8
4593 * End:
4594 */
Linux kernel - Deliverables
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