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NFSv4: Implement the fs_locations function call
[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
734static int encode_getfh(struct xdr_stream *xdr)
735{
736 uint32_t *p;
737
738 RESERVE_SPACE(4);
739 WRITE32(OP_GETFH);
740
741 return 0;
742}
743
744static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
745{
746 uint32_t *p;
747
748 RESERVE_SPACE(8 + name->len);
749 WRITE32(OP_LINK);
750 WRITE32(name->len);
751 WRITEMEM(name->name, name->len);
752
753 return 0;
754}
755
911d1aaf
TM		 756static inline int nfs4_lock_type(struct file_lock *fl, int block)
757{
758 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
759 return block ? NFS4_READW_LT : NFS4_READ_LT;
760 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
761}
762
763static inline uint64_t nfs4_lock_length(struct file_lock *fl)
764{
765 if (fl->fl_end == OFFSET_MAX)
766 return ~(uint64_t)0;
767 return fl->fl_end - fl->fl_start + 1;
768}
769
1da177e4
LT		 770/*
771 * opcode,type,reclaim,offset,length,new_lock_owner = 32
772 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
773 */
911d1aaf 774static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
1da177e4
LT		 775{
776 uint32_t *p;
1da177e4
LT		 777
778 RESERVE_SPACE(32);
779 WRITE32(OP_LOCK);
911d1aaf
TM		 780 WRITE32(nfs4_lock_type(args->fl, args->block));
781 WRITE32(args->reclaim);
782 WRITE64(args->fl->fl_start);
783 WRITE64(nfs4_lock_length(args->fl));
784 WRITE32(args->new_lock_owner);
785 if (args->new_lock_owner){
1da177e4 786 RESERVE_SPACE(40);
911d1aaf
TM		 787 WRITE32(args->open_seqid->sequence->counter);
788 WRITEMEM(args->open_stateid->data, sizeof(args->open_stateid->data));
789 WRITE32(args->lock_seqid->sequence->counter);
790 WRITE64(args->lock_owner.clientid);
1da177e4 791 WRITE32(4);
911d1aaf 792 WRITE32(args->lock_owner.id);
1da177e4
LT		 793 }
794 else {
1da177e4 795 RESERVE_SPACE(20);
911d1aaf
TM		 796 WRITEMEM(args->lock_stateid->data, sizeof(args->lock_stateid->data));
797 WRITE32(args->lock_seqid->sequence->counter);
1da177e4
LT		 798 }
799
800 return 0;
801}
802
911d1aaf 803static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
1da177e4
LT		 804{
805 uint32_t *p;
1da177e4
LT		 806
807 RESERVE_SPACE(40);
808 WRITE32(OP_LOCKT);
911d1aaf
TM		 809 WRITE32(nfs4_lock_type(args->fl, 0));
810 WRITE64(args->fl->fl_start);
811 WRITE64(nfs4_lock_length(args->fl));
812 WRITE64(args->lock_owner.clientid);
1da177e4 813 WRITE32(4);
911d1aaf 814 WRITE32(args->lock_owner.id);
1da177e4
LT		 815
816 return 0;
817}
818
911d1aaf 819static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
1da177e4
LT		 820{
821 uint32_t *p;
1da177e4
LT		 822
823 RESERVE_SPACE(44);
824 WRITE32(OP_LOCKU);
911d1aaf
TM		 825 WRITE32(nfs4_lock_type(args->fl, 0));
826 WRITE32(args->seqid->sequence->counter);
827 WRITEMEM(args->stateid->data, sizeof(args->stateid->data));
828 WRITE64(args->fl->fl_start);
829 WRITE64(nfs4_lock_length(args->fl));
1da177e4
LT		 830
831 return 0;
832}
833
834static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
835{
836 int len = name->len;
837 uint32_t *p;
838
839 RESERVE_SPACE(8 + len);
840 WRITE32(OP_LOOKUP);
841 WRITE32(len);
842 WRITEMEM(name->name, len);
843
844 return 0;
845}
846
847static void encode_share_access(struct xdr_stream *xdr, int open_flags)
848{
849 uint32_t *p;
850
851 RESERVE_SPACE(8);
852 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
853 case FMODE_READ:
854 WRITE32(NFS4_SHARE_ACCESS_READ);
855 break;
856 case FMODE_WRITE:
857 WRITE32(NFS4_SHARE_ACCESS_WRITE);
858 break;
859 case FMODE_READ|FMODE_WRITE:
860 WRITE32(NFS4_SHARE_ACCESS_BOTH);
861 break;
862 default:
863 BUG();
864 }
865 WRITE32(0); /* for linux, share_deny = 0 always */
866}
867
868static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
869{
870 uint32_t *p;
871 /*
872 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
873 * owner 4 = 32
874 */
875 RESERVE_SPACE(8);
876 WRITE32(OP_OPEN);
cee54fc9 877 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 878 encode_share_access(xdr, arg->open_flags);
879 RESERVE_SPACE(16);
880 WRITE64(arg->clientid);
881 WRITE32(4);
882 WRITE32(arg->id);
883}
884
885static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
886{
887 uint32_t *p;
888
889 RESERVE_SPACE(4);
890 switch(arg->open_flags & O_EXCL) {
891 case 0:
892 WRITE32(NFS4_CREATE_UNCHECKED);
893 encode_attrs(xdr, arg->u.attrs, arg->server);
894 break;
895 default:
896 WRITE32(NFS4_CREATE_EXCLUSIVE);
897 encode_nfs4_verifier(xdr, &arg->u.verifier);
898 }
899}
900
901static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
902{
903 uint32_t *p;
904
905 RESERVE_SPACE(4);
906 switch (arg->open_flags & O_CREAT) {
907 case 0:
908 WRITE32(NFS4_OPEN_NOCREATE);
909 break;
910 default:
911 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
912 WRITE32(NFS4_OPEN_CREATE);
913 encode_createmode(xdr, arg);
914 }
915}
916
917static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
918{
919 uint32_t *p;
920
921 RESERVE_SPACE(4);
922 switch (delegation_type) {
923 case 0:
924 WRITE32(NFS4_OPEN_DELEGATE_NONE);
925 break;
926 case FMODE_READ:
927 WRITE32(NFS4_OPEN_DELEGATE_READ);
928 break;
929 case FMODE_WRITE|FMODE_READ:
930 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
931 break;
932 default:
933 BUG();
934 }
935}
936
937static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
938{
939 uint32_t *p;
940
941 RESERVE_SPACE(4);
942 WRITE32(NFS4_OPEN_CLAIM_NULL);
943 encode_string(xdr, name->len, name->name);
944}
945
946static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
947{
948 uint32_t *p;
949
950 RESERVE_SPACE(4);
951 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
952 encode_delegation_type(xdr, type);
953}
954
955static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
956{
957 uint32_t *p;
958
959 RESERVE_SPACE(4+sizeof(stateid->data));
960 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
961 WRITEMEM(stateid->data, sizeof(stateid->data));
962 encode_string(xdr, name->len, name->name);
963}
964
965static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
966{
967 encode_openhdr(xdr, arg);
968 encode_opentype(xdr, arg);
969 switch (arg->claim) {
970 case NFS4_OPEN_CLAIM_NULL:
971 encode_claim_null(xdr, arg->name);
972 break;
973 case NFS4_OPEN_CLAIM_PREVIOUS:
974 encode_claim_previous(xdr, arg->u.delegation_type);
975 break;
976 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
977 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
978 break;
979 default:
980 BUG();
981 }
982 return 0;
983}
984
985static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
986{
987 uint32_t *p;
988
cdd4e68b 989 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 990 WRITE32(OP_OPEN_CONFIRM);
cdd4e68b 991 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 992 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 993
994 return 0;
995}
996
997static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
998{
999 uint32_t *p;
1000
9512135d 1001 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 1002 WRITE32(OP_OPEN_DOWNGRADE);
9512135d 1003 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 1004 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1005 encode_share_access(xdr, arg->open_flags);
1006 return 0;
1007}
1008
1009static int
1010encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1011{
1012 int len = fh->size;
1013 uint32_t *p;
1014
1015 RESERVE_SPACE(8 + len);
1016 WRITE32(OP_PUTFH);
1017 WRITE32(len);
1018 WRITEMEM(fh->data, len);
1019
1020 return 0;
1021}
1022
1023static int encode_putrootfh(struct xdr_stream *xdr)
1024{
1025 uint32_t *p;
1026
1027 RESERVE_SPACE(4);
1028 WRITE32(OP_PUTROOTFH);
1029
1030 return 0;
1031}
1032
1033static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1034{
1da177e4
LT		 1035 nfs4_stateid stateid;
1036 uint32_t *p;
1037
1038 RESERVE_SPACE(16);
1039 if (ctx->state != NULL) {
1040 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1041 WRITEMEM(stateid.data, sizeof(stateid.data));
1042 } else
1043 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1044}
1045
1046static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1047{
1048 uint32_t *p;
1049
1050 RESERVE_SPACE(4);
1051 WRITE32(OP_READ);
1052
1053 encode_stateid(xdr, args->context);
1054
1055 RESERVE_SPACE(12);
1056 WRITE64(args->offset);
1057 WRITE32(args->count);
1058
1059 return 0;
1060}
1061
1062static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1063{
1064 struct rpc_auth *auth = req->rq_task->tk_auth;
97d312d0
MN		 1065 uint32_t attrs[2] = {
1066 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1067 FATTR4_WORD1_MOUNTED_ON_FILEID,
1068 };
1da177e4
LT		 1069 int replen;
1070 uint32_t *p;
1071
1072 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1073 WRITE32(OP_READDIR);
1074 WRITE64(readdir->cookie);
1075 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1076 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1077 WRITE32(readdir->count);
1078 WRITE32(2);
97d312d0
MN		 1079 /* Switch to mounted_on_fileid if the server supports it */
1080 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1081 attrs[0] &= ~FATTR4_WORD0_FILEID;
1082 else
1083 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1084 WRITE32(attrs[0] & readdir->bitmask[0]);
1085 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1086 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1087 __FUNCTION__,
1088 (unsigned long long)readdir->cookie,
1089 ((u32 *)readdir->verifier.data)[0],
1090 ((u32 *)readdir->verifier.data)[1],
1091 attrs[0] & readdir->bitmask[0],
1092 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1093
1094 /* set up reply kvec
1095 * toplevel_status + taglen + rescount + OP_PUTFH + status
1096 * + OP_READDIR + status + verifer(2) = 9
1097 */
1098 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1099 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1100 readdir->pgbase, readdir->count);
eadf4598
TM		 1101 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1102 __FUNCTION__, replen, readdir->pages,
1103 readdir->pgbase, readdir->count);
1da177e4
LT		 1104
1105 return 0;
1106}
1107
1108static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1109{
1110 struct rpc_auth *auth = req->rq_task->tk_auth;
1111 unsigned int replen;
1112 uint32_t *p;
1113
1114 RESERVE_SPACE(4);
1115 WRITE32(OP_READLINK);
1116
1117 /* set up reply kvec
1118 * toplevel_status + taglen + rescount + OP_PUTFH + status
1119 * + OP_READLINK + status + string length = 8
1120 */
1121 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1122 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1123 readlink->pgbase, readlink->pglen);
1124
1125 return 0;
1126}
1127
1128static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1129{
1130 uint32_t *p;
1131
1132 RESERVE_SPACE(8 + name->len);
1133 WRITE32(OP_REMOVE);
1134 WRITE32(name->len);
1135 WRITEMEM(name->name, name->len);
1136
1137 return 0;
1138}
1139
1140static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1141{
1142 uint32_t *p;
1143
1144 RESERVE_SPACE(8 + oldname->len);
1145 WRITE32(OP_RENAME);
1146 WRITE32(oldname->len);
1147 WRITEMEM(oldname->name, oldname->len);
1148
1149 RESERVE_SPACE(4 + newname->len);
1150 WRITE32(newname->len);
1151 WRITEMEM(newname->name, newname->len);
1152
1153 return 0;
1154}
1155
1156static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1157{
1158 uint32_t *p;
1159
1160 RESERVE_SPACE(12);
1161 WRITE32(OP_RENEW);
1162 WRITE64(client_stateid->cl_clientid);
1163
1164 return 0;
1165}
1166
56ae19f3
TM		 1167static int
1168encode_restorefh(struct xdr_stream *xdr)
1169{
1170 uint32_t *p;
1171
1172 RESERVE_SPACE(4);
1173 WRITE32(OP_RESTOREFH);
1174
1175 return 0;
1176}
1177
23ec6965
BF		 1178static int
1179encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1180{
1181 uint32_t *p;
1182
1183 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1184 WRITE32(OP_SETATTR);
1185 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1186 RESERVE_SPACE(2*4);
1187 WRITE32(1);
1188 WRITE32(FATTR4_WORD0_ACL);
1189 if (arg->acl_len % 4)
1190 return -EINVAL;
1191 RESERVE_SPACE(4);
1192 WRITE32(arg->acl_len);
1193 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1194 return 0;
1195}
1196
1da177e4
LT		 1197static int
1198encode_savefh(struct xdr_stream *xdr)
1199{
1200 uint32_t *p;
1201
1202 RESERVE_SPACE(4);
1203 WRITE32(OP_SAVEFH);
1204
1205 return 0;
1206}
1207
1208static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1209{
1210 int status;
1211 uint32_t *p;
1212
1213 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1214 WRITE32(OP_SETATTR);
1215 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1216
1217 if ((status = encode_attrs(xdr, arg->iap, server)))
1218 return status;
1219
1220 return 0;
1221}
1222
1223static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1224{
1225 uint32_t *p;
1226
1227 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1228 WRITE32(OP_SETCLIENTID);
1229 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1230
1231 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1232 RESERVE_SPACE(4);
1233 WRITE32(setclientid->sc_prog);
1234 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1235 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1236 RESERVE_SPACE(4);
1237 WRITE32(setclientid->sc_cb_ident);
1238
1239 return 0;
1240}
1241
1242static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1243{
1244 uint32_t *p;
1245
1246 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1247 WRITE32(OP_SETCLIENTID_CONFIRM);
1248 WRITE64(client_state->cl_clientid);
1249 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1250
1251 return 0;
1252}
1253
1254static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1255{
1256 uint32_t *p;
1257
1258 RESERVE_SPACE(4);
1259 WRITE32(OP_WRITE);
1260
1261 encode_stateid(xdr, args->context);
1262
1263 RESERVE_SPACE(16);
1264 WRITE64(args->offset);
1265 WRITE32(args->stable);
1266 WRITE32(args->count);
1267
1268 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1269
1270 return 0;
1271}
1272
1273static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1274{
1275 uint32_t *p;
1276
1277 RESERVE_SPACE(20);
1278
1279 WRITE32(OP_DELEGRETURN);
1280 WRITEMEM(stateid->data, sizeof(stateid->data));
1281 return 0;
1282
1283}
1284/*
1285 * END OF "GENERIC" ENCODE ROUTINES.
1286 */
1287
1288/*
1289 * Encode an ACCESS request
1290 */
1291static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1292{
1293 struct xdr_stream xdr;
1294 struct compound_hdr hdr = {
1295 .nops = 2,
1296 };
1297 int status;
1298
1299 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1300 encode_compound_hdr(&xdr, &hdr);
1301 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1302 status = encode_access(&xdr, args->access);
1303 return status;
1304}
1305
1306/*
1307 * Encode LOOKUP request
1308 */
1309static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1310{
1311 struct xdr_stream xdr;
1312 struct compound_hdr hdr = {
1313 .nops = 4,
1314 };
1315 int status;
1316
1317 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1318 encode_compound_hdr(&xdr, &hdr);
1319 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1320 goto out;
1321 if ((status = encode_lookup(&xdr, args->name)) != 0)
1322 goto out;
1323 if ((status = encode_getfh(&xdr)) != 0)
1324 goto out;
1325 status = encode_getfattr(&xdr, args->bitmask);
1326out:
1327 return status;
1328}
1329
1330/*
1331 * Encode LOOKUP_ROOT request
1332 */
1333static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1334{
1335 struct xdr_stream xdr;
1336 struct compound_hdr hdr = {
1337 .nops = 3,
1338 };
1339 int status;
1340
1341 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1342 encode_compound_hdr(&xdr, &hdr);
1343 if ((status = encode_putrootfh(&xdr)) != 0)
1344 goto out;
1345 if ((status = encode_getfh(&xdr)) == 0)
1346 status = encode_getfattr(&xdr, args->bitmask);
1347out:
1348 return status;
1349}
1350
1351/*
1352 * Encode REMOVE request
1353 */
1354static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1355{
1356 struct xdr_stream xdr;
1357 struct compound_hdr hdr = {
16e42959 1358 .nops = 3,
1da177e4
LT		 1359 };
1360 int status;
1361
1362 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1363 encode_compound_hdr(&xdr, &hdr);
16e42959
TM		 1364 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1365 goto out;
1366 if ((status = encode_remove(&xdr, args->name)) != 0)
1367 goto out;
1368 status = encode_getfattr(&xdr, args->bitmask);
1369out:
1da177e4
LT		 1370 return status;
1371}
1372
1373/*
1374 * Encode RENAME request
1375 */
1376static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1377{
1378 struct xdr_stream xdr;
1379 struct compound_hdr hdr = {
6caf2c82 1380 .nops = 7,
1da177e4
LT		 1381 };
1382 int status;
1383
1384 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1385 encode_compound_hdr(&xdr, &hdr);
1386 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1387 goto out;
1388 if ((status = encode_savefh(&xdr)) != 0)
1389 goto out;
1390 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1391 goto out;
6caf2c82
TM		 1392 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1393 goto out;
1394 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1395 goto out;
1396 if ((status = encode_restorefh(&xdr)) != 0)
1397 goto out;
1398 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1399out:
1400 return status;
1401}
1402
1403/*
1404 * Encode LINK request
1405 */
1406static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1407{
1408 struct xdr_stream xdr;
1409 struct compound_hdr hdr = {
91ba2eee 1410 .nops = 7,
1da177e4
LT		 1411 };
1412 int status;
1413
1414 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1415 encode_compound_hdr(&xdr, &hdr);
1416 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1417 goto out;
1418 if ((status = encode_savefh(&xdr)) != 0)
1419 goto out;
1420 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1421 goto out;
91ba2eee
TM		 1422 if ((status = encode_link(&xdr, args->name)) != 0)
1423 goto out;
1424 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1425 goto out;
1426 if ((status = encode_restorefh(&xdr)) != 0)
1427 goto out;
1428 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1429out:
1430 return status;
1431}
1432
1433/*
1434 * Encode CREATE request
1435 */
1436static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1437{
1438 struct xdr_stream xdr;
1439 struct compound_hdr hdr = {
56ae19f3 1440 .nops = 7,
1da177e4
LT		 1441 };
1442 int status;
1443
1444 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1445 encode_compound_hdr(&xdr, &hdr);
1446 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1447 goto out;
56ae19f3
TM		 1448 if ((status = encode_savefh(&xdr)) != 0)
1449 goto out;
1da177e4
LT		 1450 if ((status = encode_create(&xdr, args)) != 0)
1451 goto out;
1452 if ((status = encode_getfh(&xdr)) != 0)
1453 goto out;
56ae19f3
TM		 1454 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1455 goto out;
1456 if ((status = encode_restorefh(&xdr)) != 0)
1457 goto out;
1da177e4
LT		 1458 status = encode_getfattr(&xdr, args->bitmask);
1459out:
1460 return status;
1461}
1462
1463/*
1464 * Encode SYMLINK request
1465 */
1466static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1467{
1468 return nfs4_xdr_enc_create(req, p, args);
1469}
1470
1471/*
1472 * Encode GETATTR request
1473 */
1474static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1475{
1476 struct xdr_stream xdr;
1477 struct compound_hdr hdr = {
1478 .nops = 2,
1479 };
1480 int status;
1481
1482 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1483 encode_compound_hdr(&xdr, &hdr);
1484 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1485 status = encode_getfattr(&xdr, args->bitmask);
1486 return status;
1487}
1488
1489/*
1490 * Encode a CLOSE request
1491 */
1492static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1493{
1494 struct xdr_stream xdr;
1495 struct compound_hdr hdr = {
516a6af6 1496 .nops = 3,
1da177e4
LT		 1497 };
1498 int status;
1499
1500 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1501 encode_compound_hdr(&xdr, &hdr);
1502 status = encode_putfh(&xdr, args->fh);
1503 if(status)
1504 goto out;
1505 status = encode_close(&xdr, args);
516a6af6
TM		 1506 if (status != 0)
1507 goto out;
1508 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1509out:
1510 return status;
1511}
1512
1513/*
1514 * Encode an OPEN request
1515 */
1516static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1517{
1518 struct xdr_stream xdr;
1519 struct compound_hdr hdr = {
56ae19f3 1520 .nops = 7,
1da177e4
LT		 1521 };
1522 int status;
1523
1524 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1525 encode_compound_hdr(&xdr, &hdr);
1526 status = encode_putfh(&xdr, args->fh);
56ae19f3
TM		 1527 if (status)
1528 goto out;
1529 status = encode_savefh(&xdr);
1da177e4
LT		 1530 if (status)
1531 goto out;
1532 status = encode_open(&xdr, args);
1533 if (status)
1534 goto out;
1535 status = encode_getfh(&xdr);
1536 if (status)
1537 goto out;
1538 status = encode_getfattr(&xdr, args->bitmask);
56ae19f3
TM		 1539 if (status)
1540 goto out;
1541 status = encode_restorefh(&xdr);
1542 if (status)
1543 goto out;
1544 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1545out:
1546 return status;
1547}
1548
1549/*
1550 * Encode an OPEN_CONFIRM request
1551 */
1552static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1553{
1554 struct xdr_stream xdr;
1555 struct compound_hdr hdr = {
1556 .nops = 2,
1557 };
1558 int status;
1559
1560 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1561 encode_compound_hdr(&xdr, &hdr);
1562 status = encode_putfh(&xdr, args->fh);
1563 if(status)
1564 goto out;
1565 status = encode_open_confirm(&xdr, args);
1566out:
1567 return status;
1568}
1569
1570/*
1571 * Encode an OPEN request with no attributes.
1572 */
1573static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1574{
1575 struct xdr_stream xdr;
1576 struct compound_hdr hdr = {
864472e9 1577 .nops = 3,
1da177e4
LT		 1578 };
1579 int status;
1580
1581 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1582 encode_compound_hdr(&xdr, &hdr);
1583 status = encode_putfh(&xdr, args->fh);
1584 if (status)
1585 goto out;
1586 status = encode_open(&xdr, args);
864472e9
TM		 1587 if (status)
1588 goto out;
1589 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1590out:
1591 return status;
1592}
1593
1594/*
1595 * Encode an OPEN_DOWNGRADE request
1596 */
1597static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1598{
1599 struct xdr_stream xdr;
1600 struct compound_hdr hdr = {
516a6af6 1601 .nops = 3,
1da177e4
LT		 1602 };
1603 int status;
1604
1605 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1606 encode_compound_hdr(&xdr, &hdr);
1607 status = encode_putfh(&xdr, args->fh);
1608 if (status)
1609 goto out;
1610 status = encode_open_downgrade(&xdr, args);
516a6af6
TM		 1611 if (status != 0)
1612 goto out;
1613 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1614out:
1615 return status;
1616}
1617
1618/*
1619 * Encode a LOCK request
1620 */
911d1aaf 1621static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lock_args *args)
1da177e4
LT		 1622{
1623 struct xdr_stream xdr;
1624 struct compound_hdr hdr = {
1625 .nops = 2,
1626 };
1627 int status;
1628
1629 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1630 encode_compound_hdr(&xdr, &hdr);
1631 status = encode_putfh(&xdr, args->fh);
1632 if(status)
1633 goto out;
1634 status = encode_lock(&xdr, args);
1635out:
1636 return status;
1637}
1638
1639/*
1640 * Encode a LOCKT request
1641 */
911d1aaf 1642static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockt_args *args)
1da177e4
LT		 1643{
1644 struct xdr_stream xdr;
1645 struct compound_hdr hdr = {
1646 .nops = 2,
1647 };
1648 int status;
1649
1650 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1651 encode_compound_hdr(&xdr, &hdr);
1652 status = encode_putfh(&xdr, args->fh);
1653 if(status)
1654 goto out;
1655 status = encode_lockt(&xdr, args);
1656out:
1657 return status;
1658}
1659
1660/*
1661 * Encode a LOCKU request
1662 */
911d1aaf 1663static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_locku_args *args)
1da177e4
LT		 1664{
1665 struct xdr_stream xdr;
1666 struct compound_hdr hdr = {
1667 .nops = 2,
1668 };
1669 int status;
1670
1671 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1672 encode_compound_hdr(&xdr, &hdr);
1673 status = encode_putfh(&xdr, args->fh);
1674 if(status)
1675 goto out;
1676 status = encode_locku(&xdr, args);
1677out:
1678 return status;
1679}
1680
1681/*
1682 * Encode a READLINK request
1683 */
1684static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1685{
1686 struct xdr_stream xdr;
1687 struct compound_hdr hdr = {
1688 .nops = 2,
1689 };
1690 int status;
1691
1692 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1693 encode_compound_hdr(&xdr, &hdr);
1694 status = encode_putfh(&xdr, args->fh);
1695 if(status)
1696 goto out;
1697 status = encode_readlink(&xdr, args, req);
1698out:
1699 return status;
1700}
1701
1702/*
1703 * Encode a READDIR request
1704 */
1705static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1706{
1707 struct xdr_stream xdr;
1708 struct compound_hdr hdr = {
1709 .nops = 2,
1710 };
1711 int status;
1712
1713 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1714 encode_compound_hdr(&xdr, &hdr);
1715 status = encode_putfh(&xdr, args->fh);
1716 if(status)
1717 goto out;
1718 status = encode_readdir(&xdr, args, req);
1719out:
1720 return status;
1721}
1722
1723/*
1724 * Encode a READ request
1725 */
1726static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1727{
1728 struct rpc_auth *auth = req->rq_task->tk_auth;
1729 struct xdr_stream xdr;
1730 struct compound_hdr hdr = {
1731 .nops = 2,
1732 };
1733 int replen, status;
1734
1735 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1736 encode_compound_hdr(&xdr, &hdr);
1737 status = encode_putfh(&xdr, args->fh);
1738 if (status)
1739 goto out;
1740 status = encode_read(&xdr, args);
1741 if (status)
1742 goto out;
1743
1744 /* set up reply kvec
1745 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1746 * + OP_READ + status + eof + datalen = 9
1747 */
1748 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1749 xdr_inline_pages(&req->rq_rcv_buf, replen,
1750 args->pages, args->pgbase, args->count);
1751out:
1752 return status;
1753}
1754
1755/*
1756 * Encode an SETATTR request
1757 */
1758static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1759
1760{
1761 struct xdr_stream xdr;
1762 struct compound_hdr hdr = {
1763 .nops = 3,
1764 };
1765 int status;
1766
1767 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1768 encode_compound_hdr(&xdr, &hdr);
1769 status = encode_putfh(&xdr, args->fh);
1770 if(status)
1771 goto out;
1772 status = encode_setattr(&xdr, args, args->server);
1773 if(status)
1774 goto out;
1775 status = encode_getfattr(&xdr, args->bitmask);
1776out:
1777 return status;
1778}
1779
029d105e
BF		 1780/*
1781 * Encode a GETACL request
1782 */
1783static int
1784nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1785 struct nfs_getaclargs *args)
1786{
1787 struct xdr_stream xdr;
1788 struct rpc_auth *auth = req->rq_task->tk_auth;
1789 struct compound_hdr hdr = {
1790 .nops = 2,
1791 };
1792 int replen, status;
1793
1794 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1795 encode_compound_hdr(&xdr, &hdr);
1796 status = encode_putfh(&xdr, args->fh);
1797 if (status)
1798 goto out;
1799 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1800 /* set up reply buffer: */
1801 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1802 xdr_inline_pages(&req->rq_rcv_buf, replen,
1803 args->acl_pages, args->acl_pgbase, args->acl_len);
1804out:
1805 return status;
1806}
1807
1da177e4
LT		 1808/*
1809 * Encode a WRITE request
1810 */
1811static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1812{
1813 struct xdr_stream xdr;
1814 struct compound_hdr hdr = {
4f9838c7 1815 .nops = 3,
1da177e4
LT		 1816 };
1817 int status;
1818
1819 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1820 encode_compound_hdr(&xdr, &hdr);
1821 status = encode_putfh(&xdr, args->fh);
1822 if (status)
1823 goto out;
1824 status = encode_write(&xdr, args);
4f9838c7
TM		 1825 if (status)
1826 goto out;
1827 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1828out:
1829 return status;
1830}
1831
1832/*
1833 * a COMMIT request
1834 */
1835static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1836{
1837 struct xdr_stream xdr;
1838 struct compound_hdr hdr = {
4f9838c7 1839 .nops = 3,
1da177e4
LT		 1840 };
1841 int status;
1842
1843 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1844 encode_compound_hdr(&xdr, &hdr);
1845 status = encode_putfh(&xdr, args->fh);
1846 if (status)
1847 goto out;
1848 status = encode_commit(&xdr, args);
4f9838c7
TM		 1849 if (status)
1850 goto out;
1851 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1852out:
1853 return status;
1854}
1855
1856/*
1857 * FSINFO request
1858 */
1859static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1860{
1861 struct xdr_stream xdr;
1862 struct compound_hdr hdr = {
1863 .nops = 2,
1864 };
1865 int status;
1866
1867 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1868 encode_compound_hdr(&xdr, &hdr);
1869 status = encode_putfh(&xdr, args->fh);
1870 if (!status)
1871 status = encode_fsinfo(&xdr, args->bitmask);
1872 return status;
1873}
1874
1875/*
1876 * a PATHCONF request
1877 */
1878static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1879{
1da177e4
LT		 1880 struct xdr_stream xdr;
1881 struct compound_hdr hdr = {
1882 .nops = 2,
1883 };
1884 int status;
1885
1886 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1887 encode_compound_hdr(&xdr, &hdr);
1888 status = encode_putfh(&xdr, args->fh);
1889 if (!status)
1890 status = encode_getattr_one(&xdr,
1891 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1892 return status;
1893}
1894
1895/*
1896 * a STATFS request
1897 */
1898static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1899{
1da177e4
LT		 1900 struct xdr_stream xdr;
1901 struct compound_hdr hdr = {
1902 .nops = 2,
1903 };
1904 int status;
1905
1906 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1907 encode_compound_hdr(&xdr, &hdr);
1908 status = encode_putfh(&xdr, args->fh);
1909 if (status == 0)
1910 status = encode_getattr_two(&xdr,
1911 args->bitmask[0] & nfs4_statfs_bitmap[0],
1912 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1913 return status;
1914}
1915
1916/*
1917 * GETATTR_BITMAP request
1918 */
1919static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1920{
1921 struct xdr_stream xdr;
1922 struct compound_hdr hdr = {
1923 .nops = 2,
1924 };
1925 int status;
1926
1927 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1928 encode_compound_hdr(&xdr, &hdr);
1929 status = encode_putfh(&xdr, fhandle);
1930 if (status == 0)
1931 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1932 FATTR4_WORD0_LINK_SUPPORT|
1933 FATTR4_WORD0_SYMLINK_SUPPORT|
1934 FATTR4_WORD0_ACLSUPPORT);
1935 return status;
1936}
1937
1938/*
1939 * a RENEW request
1940 */
1941static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1942{
1943 struct xdr_stream xdr;
1944 struct compound_hdr hdr = {
1945 .nops = 1,
1946 };
1947
1948 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1949 encode_compound_hdr(&xdr, &hdr);
1950 return encode_renew(&xdr, clp);
1951}
1952
1953/*
1954 * a SETCLIENTID request
1955 */
1956static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1957{
1958 struct xdr_stream xdr;
1959 struct compound_hdr hdr = {
1960 .nops = 1,
1961 };
1962
1963 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1964 encode_compound_hdr(&xdr, &hdr);
1965 return encode_setclientid(&xdr, sc);
1966}
1967
1968/*
1969 * a SETCLIENTID_CONFIRM request
1970 */
1971static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1972{
1973 struct xdr_stream xdr;
1974 struct compound_hdr hdr = {
1975 .nops = 3,
1976 };
1977 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1978 int status;
1979
1980 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1981 encode_compound_hdr(&xdr, &hdr);
1982 status = encode_setclientid_confirm(&xdr, clp);
1983 if (!status)
1984 status = encode_putrootfh(&xdr);
1985 if (!status)
1986 status = encode_fsinfo(&xdr, lease_bitmap);
1987 return status;
1988}
1989
1990/*
1991 * DELEGRETURN request
1992 */
1993static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1994{
1995 struct xdr_stream xdr;
1996 struct compound_hdr hdr = {
fa178f29 1997 .nops = 3,
1da177e4
LT		 1998 };
1999 int status;
2000
2001 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2002 encode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 2003 status = encode_putfh(&xdr, args->fhandle);
2004 if (status != 0)
2005 goto out;
2006 status = encode_delegreturn(&xdr, args->stateid);
2007 if (status != 0)
2008 goto out;
2009 status = encode_getfattr(&xdr, args->bitmask);
2010out:
1da177e4
LT		 2011 return status;
2012}
2013
683b57b4
TM		 2014/*
2015 * Encode FS_LOCATIONS request
2016 */
2017static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs_locations_arg *args)
2018{
2019 struct xdr_stream xdr;
2020 struct compound_hdr hdr = {
2021 .nops = 3,
2022 };
2023 struct rpc_auth *auth = req->rq_task->tk_auth;
2024 int replen;
2025 int status;
2026
2027 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2028 encode_compound_hdr(&xdr, &hdr);
2029 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2030 goto out;
2031 if ((status = encode_lookup(&xdr, args->name)) != 0)
2032 goto out;
2033 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
2034 goto out;
2035 /* set up reply
2036 * toplevel_status + taglen + rescount + OP_PUTFH + status
2037 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2038 */
2039 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2040 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2041 0, PAGE_SIZE);
2042out:
2043 return status;
2044}
2045
1da177e4
LT		 2046/*
2047 * START OF "GENERIC" DECODE ROUTINES.
2048 * These may look a little ugly since they are imported from a "generic"
2049 * set of XDR encode/decode routines which are intended to be shared by
2050 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2051 *
2052 * If the pain of reading these is too great, it should be a straightforward
2053 * task to translate them into Linux-specific versions which are more
2054 * consistent with the style used in NFSv2/v3...
2055 */
2056#define READ32(x) (x) = ntohl(*p++)
2057#define READ64(x) do { \
2058 (x) = (u64)ntohl(*p++) << 32; \
2059 (x) |= ntohl(*p++); \
2060} while (0)
2061#define READTIME(x) do { \
2062 p++; \
2063 (x.tv_sec) = ntohl(*p++); \
2064 (x.tv_nsec) = ntohl(*p++); \
2065} while (0)
2066#define COPYMEM(x,nbytes) do { \
2067 memcpy((x), p, nbytes); \
2068 p += XDR_QUADLEN(nbytes); \
2069} while (0)
2070
2071#define READ_BUF(nbytes) do { \
2072 p = xdr_inline_decode(xdr, nbytes); \
2073 if (!p) { \
2074 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
2075 __FUNCTION__, __LINE__); \
2076 return -EIO; \
2077 } \
2078} while (0)
2079
683b57b4 2080static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
1da177e4
LT		 2081{
2082 uint32_t *p;
2083
2084 READ_BUF(4);
2085 READ32(*len);
2086 READ_BUF(*len);
2087 *string = (char *)p;
2088 return 0;
2089}
2090
2091static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2092{
2093 uint32_t *p;
2094
2095 READ_BUF(8);
2096 READ32(hdr->status);
2097 READ32(hdr->taglen);
2098
2099 READ_BUF(hdr->taglen + 4);
2100 hdr->tag = (char *)p;
2101 p += XDR_QUADLEN(hdr->taglen);
2102 READ32(hdr->nops);
2103 return 0;
2104}
2105
2106static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2107{
2108 uint32_t *p;
2109 uint32_t opnum;
2110 int32_t nfserr;
2111
2112 READ_BUF(8);
2113 READ32(opnum);
2114 if (opnum != expected) {
2115 printk(KERN_NOTICE
2116 "nfs4_decode_op_hdr: Server returned operation"
2117 " %d but we issued a request for %d\n",
2118 opnum, expected);
2119 return -EIO;
2120 }
2121 READ32(nfserr);
2122 if (nfserr != NFS_OK)
2123 return -nfs_stat_to_errno(nfserr);
2124 return 0;
2125}
2126
2127/* Dummy routine */
2128static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2129{
2130 uint32_t *p;
683b57b4 2131 unsigned int strlen;
1da177e4
LT		 2132 char *str;
2133
2134 READ_BUF(12);
2135 return decode_opaque_inline(xdr, &strlen, &str);
2136}
2137
2138static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2139{
2140 uint32_t bmlen, *p;
2141
2142 READ_BUF(4);
2143 READ32(bmlen);
2144
2145 bitmap[0] = bitmap[1] = 0;
2146 READ_BUF((bmlen << 2));
2147 if (bmlen > 0) {
2148 READ32(bitmap[0]);
2149 if (bmlen > 1)
2150 READ32(bitmap[1]);
2151 }
2152 return 0;
2153}
2154
2155static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2156{
2157 uint32_t *p;
2158
2159 READ_BUF(4);
2160 READ32(*attrlen);
2161 *savep = xdr->p;
2162 return 0;
2163}
2164
2165static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2166{
2167 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2168 decode_attr_bitmap(xdr, bitmask);
2169 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2170 } else
2171 bitmask[0] = bitmask[1] = 0;
2172 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2173 return 0;
2174}
2175
2176static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2177{
2178 uint32_t *p;
2179
2180 *type = 0;
2181 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2182 return -EIO;
2183 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2184 READ_BUF(4);
2185 READ32(*type);
2186 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2187 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2188 return -EIO;
2189 }
2190 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2191 }
2192 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2193 return 0;
2194}
2195
2196static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2197{
2198 uint32_t *p;
2199
2200 *change = 0;
2201 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2202 return -EIO;
2203 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2204 READ_BUF(8);
2205 READ64(*change);
2206 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2207 }
2208 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2209 (unsigned long long)*change);
2210 return 0;
2211}
2212
2213static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2214{
2215 uint32_t *p;
2216
2217 *size = 0;
2218 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2219 return -EIO;
2220 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2221 READ_BUF(8);
2222 READ64(*size);
2223 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2224 }
2225 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2226 return 0;
2227}
2228
2229static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2230{
2231 uint32_t *p;
2232
2233 *res = 0;
2234 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2235 return -EIO;
2236 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2237 READ_BUF(4);
2238 READ32(*res);
2239 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2240 }
2241 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2242 return 0;
2243}
2244
2245static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2246{
2247 uint32_t *p;
2248
2249 *res = 0;
2250 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2251 return -EIO;
2252 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2253 READ_BUF(4);
2254 READ32(*res);
2255 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2256 }
2257 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2258 return 0;
2259}
2260
8b4bdcf8 2261static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
1da177e4
LT		 2262{
2263 uint32_t *p;
2264
2265 fsid->major = 0;
2266 fsid->minor = 0;
2267 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2268 return -EIO;
2269 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2270 READ_BUF(16);
2271 READ64(fsid->major);
2272 READ64(fsid->minor);
2273 bitmap[0] &= ~FATTR4_WORD0_FSID;
2274 }
2275 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2276 (unsigned long long)fsid->major,
2277 (unsigned long long)fsid->minor);
2278 return 0;
2279}
2280
2281static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2282{
2283 uint32_t *p;
2284
2285 *res = 60;
2286 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2287 return -EIO;
2288 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2289 READ_BUF(4);
2290 READ32(*res);
2291 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2292 }
2293 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2294 return 0;
2295}
2296
2297static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2298{
2299 uint32_t *p;
2300
2301 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2302 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2303 return -EIO;
2304 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2305 READ_BUF(4);
2306 READ32(*res);
2307 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2308 }
2309 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2310 return 0;
2311}
2312
2313static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2314{
2315 uint32_t *p;
2316
2317 *fileid = 0;
2318 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2319 return -EIO;
2320 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2321 READ_BUF(8);
2322 READ64(*fileid);
2323 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2324 }
2325 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2326 return 0;
2327}
2328
2329static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2330{
2331 uint32_t *p;
2332 int status = 0;
2333
2334 *res = 0;
2335 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2336 return -EIO;
2337 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2338 READ_BUF(8);
2339 READ64(*res);
2340 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2341 }
2342 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2343 return status;
2344}
2345
2346static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2347{
2348 uint32_t *p;
2349 int status = 0;
2350
2351 *res = 0;
2352 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2353 return -EIO;
2354 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2355 READ_BUF(8);
2356 READ64(*res);
2357 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2358 }
2359 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2360 return status;
2361}
2362
2363static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2364{
2365 uint32_t *p;
2366 int status = 0;
2367
2368 *res = 0;
2369 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2370 return -EIO;
2371 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2372 READ_BUF(8);
2373 READ64(*res);
2374 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2375 }
2376 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2377 return status;
2378}
2379
683b57b4
TM		 2380static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fs_locations *res)
2381{
2382 int n;
2383 uint32_t *p;
2384 int status = -EIO;
2385
2386 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2387 goto out;
2388 status = 0;
2389 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2390 goto out;
2391 status = decode_opaque_inline(xdr, &res->fs_pathlen, &res->fs_path);
2392 if (unlikely(status != 0))
2393 goto out;
2394 READ_BUF(4);
2395 READ32(n);
2396 if (n <= 0)
2397 goto out_eio;
2398 res->nlocations = 0;
2399 while (res->nlocations < n) {
2400 struct nfs_fs_location *loc = &res->locations[res->nlocations];
2401
2402 status = decode_opaque_inline(xdr, &loc->serverlen, &loc->server);
2403 if (unlikely(status != 0))
2404 goto out_eio;
2405 status = decode_opaque_inline(xdr, &loc->rootpathlen, &loc->rootpath);
2406 if (unlikely(status != 0))
2407 goto out_eio;
2408 if (res->nlocations < NFS_FS_LOCATIONS_MAXENTRIES)
2409 res->nlocations++;
2410 }
2411out:
2412 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2413 return status;
2414out_eio:
2415 status = -EIO;
2416 goto out;
2417}
2418
1da177e4
LT		 2419static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2420{
2421 uint32_t *p;
2422 int status = 0;
2423
2424 *res = 0;
2425 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2426 return -EIO;
2427 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2428 READ_BUF(8);
2429 READ64(*res);
2430 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2431 }
2432 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2433 return status;
2434}
2435
2436static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2437{
2438 uint32_t *p;
2439 int status = 0;
2440
2441 *maxlink = 1;
2442 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2443 return -EIO;
2444 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2445 READ_BUF(4);
2446 READ32(*maxlink);
2447 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2448 }
2449 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2450 return status;
2451}
2452
2453static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2454{
2455 uint32_t *p;
2456 int status = 0;
2457
2458 *maxname = 1024;
2459 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2460 return -EIO;
2461 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2462 READ_BUF(4);
2463 READ32(*maxname);
2464 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2465 }
2466 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2467 return status;
2468}
2469
2470static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2471{
2472 uint32_t *p;
2473 int status = 0;
2474
2475 *res = 1024;
2476 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2477 return -EIO;
2478 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2479 uint64_t maxread;
2480 READ_BUF(8);
2481 READ64(maxread);
2482 if (maxread > 0x7FFFFFFF)
2483 maxread = 0x7FFFFFFF;
2484 *res = (uint32_t)maxread;
2485 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2486 }
2487 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2488 return status;
2489}
2490
2491static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2492{
2493 uint32_t *p;
2494 int status = 0;
2495
2496 *res = 1024;
2497 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2498 return -EIO;
2499 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2500 uint64_t maxwrite;
2501 READ_BUF(8);
2502 READ64(maxwrite);
2503 if (maxwrite > 0x7FFFFFFF)
2504 maxwrite = 0x7FFFFFFF;
2505 *res = (uint32_t)maxwrite;
2506 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2507 }
2508 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2509 return status;
2510}
2511
2512static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2513{
2514 uint32_t *p;
2515
2516 *mode = 0;
2517 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2518 return -EIO;
2519 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2520 READ_BUF(4);
2521 READ32(*mode);
2522 *mode &= ~S_IFMT;
2523 bitmap[1] &= ~FATTR4_WORD1_MODE;
2524 }
2525 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2526 return 0;
2527}
2528
2529static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2530{
2531 uint32_t *p;
2532
2533 *nlink = 1;
2534 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2535 return -EIO;
2536 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2537 READ_BUF(4);
2538 READ32(*nlink);
2539 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2540 }
2541 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2542 return 0;
2543}
2544
2545static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2546{
2547 uint32_t len, *p;
2548
2549 *uid = -2;
2550 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2551 return -EIO;
2552 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2553 READ_BUF(4);
2554 READ32(len);
2555 READ_BUF(len);
2556 if (len < XDR_MAX_NETOBJ) {
2557 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2558 dprintk("%s: nfs_map_name_to_uid failed!\n",
2559 __FUNCTION__);
2560 } else
2561 printk(KERN_WARNING "%s: name too long (%u)!\n",
2562 __FUNCTION__, len);
2563 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2564 }
2565 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2566 return 0;
2567}
2568
2569static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2570{
2571 uint32_t len, *p;
2572
2573 *gid = -2;
2574 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2575 return -EIO;
2576 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2577 READ_BUF(4);
2578 READ32(len);
2579 READ_BUF(len);
2580 if (len < XDR_MAX_NETOBJ) {
2581 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2582 dprintk("%s: nfs_map_group_to_gid failed!\n",
2583 __FUNCTION__);
2584 } else
2585 printk(KERN_WARNING "%s: name too long (%u)!\n",
2586 __FUNCTION__, len);
2587 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2588 }
2589 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2590 return 0;
2591}
2592
2593static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2594{
2595 uint32_t major = 0, minor = 0, *p;
2596
2597 *rdev = MKDEV(0,0);
2598 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2599 return -EIO;
2600 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2601 dev_t tmp;
2602
2603 READ_BUF(8);
2604 READ32(major);
2605 READ32(minor);
2606 tmp = MKDEV(major, minor);
2607 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2608 *rdev = tmp;
2609 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2610 }
2611 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2612 return 0;
2613}
2614
2615static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2616{
2617 uint32_t *p;
2618 int status = 0;
2619
2620 *res = 0;
2621 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2622 return -EIO;
2623 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2624 READ_BUF(8);
2625 READ64(*res);
2626 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2627 }
2628 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2629 return status;
2630}
2631
2632static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2633{
2634 uint32_t *p;
2635 int status = 0;
2636
2637 *res = 0;
2638 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2639 return -EIO;
2640 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2641 READ_BUF(8);
2642 READ64(*res);
2643 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2644 }
2645 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2646 return status;
2647}
2648
2649static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2650{
2651 uint32_t *p;
2652 int status = 0;
2653
2654 *res = 0;
2655 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2656 return -EIO;
2657 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2658 READ_BUF(8);
2659 READ64(*res);
2660 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2661 }
2662 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2663 return status;
2664}
2665
2666static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2667{
2668 uint32_t *p;
2669
2670 *used = 0;
2671 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2672 return -EIO;
2673 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2674 READ_BUF(8);
2675 READ64(*used);
2676 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2677 }
2678 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2679 (unsigned long long)*used);
2680 return 0;
2681}
2682
2683static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2684{
2685 uint32_t *p;
2686 uint64_t sec;
2687 uint32_t nsec;
2688
2689 READ_BUF(12);
2690 READ64(sec);
2691 READ32(nsec);
2692 time->tv_sec = (time_t)sec;
2693 time->tv_nsec = (long)nsec;
2694 return 0;
2695}
2696
2697static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2698{
2699 int status = 0;
2700
2701 time->tv_sec = 0;
2702 time->tv_nsec = 0;
2703 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2704 return -EIO;
2705 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2706 status = decode_attr_time(xdr, time);
2707 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2708 }
2709 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2710 return status;
2711}
2712
2713static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2714{
2715 int status = 0;
2716
2717 time->tv_sec = 0;
2718 time->tv_nsec = 0;
2719 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2720 return -EIO;
2721 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2722 status = decode_attr_time(xdr, time);
2723 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2724 }
2725 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2726 return status;
2727}
2728
2729static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2730{
2731 int status = 0;
2732
2733 time->tv_sec = 0;
2734 time->tv_nsec = 0;
2735 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2736 return -EIO;
2737 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2738 status = decode_attr_time(xdr, time);
2739 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2740 }
2741 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2742 return status;
2743}
2744
2745static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2746{
2747 unsigned int attrwords = XDR_QUADLEN(attrlen);
2748 unsigned int nwords = xdr->p - savep;
2749
2750 if (unlikely(attrwords != nwords)) {
2751 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2752 __FUNCTION__,
2753 attrwords << 2,
2754 (attrwords < nwords) ? '<' : '>',
2755 nwords << 2);
2756 return -EIO;
2757 }
2758 return 0;
2759}
2760
2761static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2762{
2763 uint32_t *p;
2764
2765 READ_BUF(20);
2766 READ32(cinfo->atomic);
2767 READ64(cinfo->before);
2768 READ64(cinfo->after);
2769 return 0;
2770}
2771
2772static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2773{
2774 uint32_t *p;
2775 uint32_t supp, acc;
2776 int status;
2777
2778 status = decode_op_hdr(xdr, OP_ACCESS);
2779 if (status)
2780 return status;
2781 READ_BUF(8);
2782 READ32(supp);
2783 READ32(acc);
2784 access->supported = supp;
2785 access->access = acc;
2786 return 0;
2787}
2788
2789static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2790{
2791 uint32_t *p;
2792 int status;
2793
2794 status = decode_op_hdr(xdr, OP_CLOSE);
2795 if (status)
2796 return status;
2797 READ_BUF(sizeof(res->stateid.data));
2798 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2799 return 0;
2800}
2801
2802static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2803{
2804 uint32_t *p;
2805 int status;
2806
2807 status = decode_op_hdr(xdr, OP_COMMIT);
2808 if (status)
2809 return status;
2810 READ_BUF(8);
2811 COPYMEM(res->verf->verifier, 8);
2812 return 0;
2813}
2814
2815static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2816{
2817 uint32_t *p;
2818 uint32_t bmlen;
2819 int status;
2820
2821 status = decode_op_hdr(xdr, OP_CREATE);
2822 if (status)
2823 return status;
2824 if ((status = decode_change_info(xdr, cinfo)))
2825 return status;
2826 READ_BUF(4);
2827 READ32(bmlen);
2828 READ_BUF(bmlen << 2);
2829 return 0;
2830}
2831
2832static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2833{
2834 uint32_t *savep;
2835 uint32_t attrlen,
2836 bitmap[2] = {0};
2837 int status;
2838
2839 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2840 goto xdr_error;
2841 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2842 goto xdr_error;
2843 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2844 goto xdr_error;
2845 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2846 goto xdr_error;
2847 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2848 goto xdr_error;
2849 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2850 goto xdr_error;
2851 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2852 goto xdr_error;
2853 status = verify_attr_len(xdr, savep, attrlen);
2854xdr_error:
16c32b71 2855 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2856 return status;
2857}
2858
2859static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2860{
2861 uint32_t *savep;
2862 uint32_t attrlen,
2863 bitmap[2] = {0};
2864 int status;
2865
2866 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2867 goto xdr_error;
2868 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2869 goto xdr_error;
2870 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2871 goto xdr_error;
2872
2873 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2874 goto xdr_error;
2875 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2876 goto xdr_error;
2877 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2878 goto xdr_error;
2879 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2880 goto xdr_error;
2881 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2882 goto xdr_error;
2883 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2884 goto xdr_error;
2885
2886 status = verify_attr_len(xdr, savep, attrlen);
2887xdr_error:
16c32b71 2888 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2889 return status;
2890}
2891
2892static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2893{
2894 uint32_t *savep;
2895 uint32_t attrlen,
2896 bitmap[2] = {0};
2897 int status;
2898
2899 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2900 goto xdr_error;
2901 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2902 goto xdr_error;
2903 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2904 goto xdr_error;
2905
2906 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2907 goto xdr_error;
2908 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2909 goto xdr_error;
2910
2911 status = verify_attr_len(xdr, savep, attrlen);
2912xdr_error:
16c32b71 2913 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2914 return status;
2915}
2916
2917static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2918{
2919 uint32_t *savep;
2920 uint32_t attrlen,
2921 bitmap[2] = {0},
2922 type;
2923 int status, fmode = 0;
2924
2925 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2926 goto xdr_error;
2927 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2928 goto xdr_error;
2929
2930 fattr->bitmap[0] = bitmap[0];
2931 fattr->bitmap[1] = bitmap[1];
2932
2933 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2934 goto xdr_error;
2935
2936
2937 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2938 goto xdr_error;
2939 fattr->type = nfs_type2fmt[type].nfs2type;
2940 fmode = nfs_type2fmt[type].mode;
2941
2942 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2943 goto xdr_error;
2944 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2945 goto xdr_error;
8b4bdcf8 2946 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
1da177e4
LT		 2947 goto xdr_error;
2948 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2949 goto xdr_error;
683b57b4
TM		 2950 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
2951 struct nfs_fs_locations,
2952 fattr))) != 0)
2953 goto xdr_error;
1da177e4
LT		 2954 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2955 goto xdr_error;
2956 fattr->mode |= fmode;
2957 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2958 goto xdr_error;
2959 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2960 goto xdr_error;
2961 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2962 goto xdr_error;
2963 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2964 goto xdr_error;
2965 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2966 goto xdr_error;
2967 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2968 goto xdr_error;
2969 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2970 goto xdr_error;
2971 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2972 goto xdr_error;
33801147 2973 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 2974 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4 2975xdr_error:
16c32b71 2976 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
1da177e4
LT		 2977 return status;
2978}
2979
2980
2981static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2982{
2983 uint32_t *savep;
2984 uint32_t attrlen, bitmap[2];
2985 int status;
2986
2987 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2988 goto xdr_error;
2989 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2990 goto xdr_error;
2991 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2992 goto xdr_error;
2993
2994 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2995
2996 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2997 goto xdr_error;
2998 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2999 goto xdr_error;
3000 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3001 goto xdr_error;
3002 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3003 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3004 goto xdr_error;
3005 fsinfo->wtpref = fsinfo->wtmax;
3006
3007 status = verify_attr_len(xdr, savep, attrlen);
3008xdr_error:
16c32b71 3009 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3010 return status;
3011}
3012
3013static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3014{
3015 uint32_t *p;
3016 uint32_t len;
3017 int status;
3018
3019 status = decode_op_hdr(xdr, OP_GETFH);
3020 if (status)
3021 return status;
3022 /* Zero handle first to allow comparisons */
3023 memset(fh, 0, sizeof(*fh));
3024
3025 READ_BUF(4);
3026 READ32(len);
3027 if (len > NFS4_FHSIZE)
3028 return -EIO;
3029 fh->size = len;
3030 READ_BUF(len);
3031 COPYMEM(fh->data, len);
3032 return 0;
3033}
3034
3035static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3036{
3037 int status;
3038
3039 status = decode_op_hdr(xdr, OP_LINK);
3040 if (status)
3041 return status;
3042 return decode_change_info(xdr, cinfo);
3043}
3044
3045/*
3046 * We create the owner, so we know a proper owner.id length is 4.
3047 */
911d1aaf 3048static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
1da177e4 3049{
911d1aaf 3050 uint64_t offset, length, clientid;
1da177e4 3051 uint32_t *p;
911d1aaf 3052 uint32_t namelen, type;
1da177e4
LT		 3053
3054 READ_BUF(32);
911d1aaf
TM		 3055 READ64(offset);
3056 READ64(length);
3057 READ32(type);
3058 if (fl != NULL) {
3059 fl->fl_start = (loff_t)offset;
3060 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3061 if (length == ~(uint64_t)0)
3062 fl->fl_end = OFFSET_MAX;
3063 fl->fl_type = F_WRLCK;
3064 if (type & 1)
3065 fl->fl_type = F_RDLCK;
3066 fl->fl_pid = 0;
3067 }
3068 READ64(clientid);
1da177e4
LT		 3069 READ32(namelen);
3070 READ_BUF(namelen);
1da177e4
LT		 3071 return -NFS4ERR_DENIED;
3072}
3073
911d1aaf 3074static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
1da177e4
LT		 3075{
3076 uint32_t *p;
3077 int status;
3078
3079 status = decode_op_hdr(xdr, OP_LOCK);
3080 if (status == 0) {
911d1aaf
TM		 3081 READ_BUF(sizeof(res->stateid.data));
3082 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
1da177e4 3083 } else if (status == -NFS4ERR_DENIED)
911d1aaf 3084 return decode_lock_denied(xdr, NULL);
1da177e4
LT		 3085 return status;
3086}
3087
911d1aaf 3088static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
1da177e4
LT		 3089{
3090 int status;
3091 status = decode_op_hdr(xdr, OP_LOCKT);
3092 if (status == -NFS4ERR_DENIED)
911d1aaf 3093 return decode_lock_denied(xdr, res->denied);
1da177e4
LT		 3094 return status;
3095}
3096
911d1aaf 3097static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
1da177e4
LT		 3098{
3099 uint32_t *p;
3100 int status;
3101
3102 status = decode_op_hdr(xdr, OP_LOCKU);
3103 if (status == 0) {
911d1aaf
TM		 3104 READ_BUF(sizeof(res->stateid.data));
3105 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
1da177e4
LT		 3106 }
3107 return status;
3108}
3109
3110static int decode_lookup(struct xdr_stream *xdr)
3111{
3112 return decode_op_hdr(xdr, OP_LOOKUP);
3113}
3114
3115/* This is too sick! */
3116static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3117{
3118 uint32_t *p;
3119 uint32_t limit_type, nblocks, blocksize;
3120
3121 READ_BUF(12);
3122 READ32(limit_type);
3123 switch (limit_type) {
3124 case 1:
3125 READ64(*maxsize);
3126 break;
3127 case 2:
3128 READ32(nblocks);
3129 READ32(blocksize);
3130 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3131 }
3132 return 0;
3133}
3134
3135static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3136{
3137 uint32_t *p;
3138 uint32_t delegation_type;
3139
3140 READ_BUF(4);
3141 READ32(delegation_type);
3142 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3143 res->delegation_type = 0;
3144 return 0;
3145 }
3146 READ_BUF(20);
3147 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3148 READ32(res->do_recall);
3149 switch (delegation_type) {
3150 case NFS4_OPEN_DELEGATE_READ:
3151 res->delegation_type = FMODE_READ;
3152 break;
3153 case NFS4_OPEN_DELEGATE_WRITE:
3154 res->delegation_type = FMODE_WRITE|FMODE_READ;
3155 if (decode_space_limit(xdr, &res->maxsize) < 0)
3156 return -EIO;
3157 }
3158 return decode_ace(xdr, NULL, res->server->nfs4_state);
3159}
3160
3161static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3162{
3163 uint32_t *p;
3164 uint32_t bmlen;
3165 int status;
3166
3167 status = decode_op_hdr(xdr, OP_OPEN);
3168 if (status)
3169 return status;
3170 READ_BUF(sizeof(res->stateid.data));
3171 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3172
3173 decode_change_info(xdr, &res->cinfo);
3174
3175 READ_BUF(8);
3176 READ32(res->rflags);
3177 READ32(bmlen);
3178 if (bmlen > 10)
3179 goto xdr_error;
3180
3181 READ_BUF(bmlen << 2);
3182 p += bmlen;
3183 return decode_delegation(xdr, res);
3184xdr_error:
16c32b71 3185 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
1da177e4
LT		 3186 return -EIO;
3187}
3188
3189static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3190{
3191 uint32_t *p;
3192 int status;
3193
3194 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3195 if (status)
3196 return status;
3197 READ_BUF(sizeof(res->stateid.data));
3198 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3199 return 0;
3200}
3201
3202static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3203{
3204 uint32_t *p;
3205 int status;
3206
3207 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3208 if (status)
3209 return status;
3210 READ_BUF(sizeof(res->stateid.data));
3211 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3212 return 0;
3213}
3214
3215static int decode_putfh(struct xdr_stream *xdr)
3216{
3217 return decode_op_hdr(xdr, OP_PUTFH);
3218}
3219
3220static int decode_putrootfh(struct xdr_stream *xdr)
3221{
3222 return decode_op_hdr(xdr, OP_PUTROOTFH);
3223}
3224
3225static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3226{
3227 struct kvec *iov = req->rq_rcv_buf.head;
3228 uint32_t *p;
3229 uint32_t count, eof, recvd, hdrlen;
3230 int status;
3231
3232 status = decode_op_hdr(xdr, OP_READ);
3233 if (status)
3234 return status;
3235 READ_BUF(8);
3236 READ32(eof);
3237 READ32(count);
3238 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3239 recvd = req->rq_rcv_buf.len - hdrlen;
3240 if (count > recvd) {
3241 printk(KERN_WARNING "NFS: server cheating in read reply: "
3242 "count %u > recvd %u\n", count, recvd);
3243 count = recvd;
3244 eof = 0;
3245 }
3246 xdr_read_pages(xdr, count);
3247 res->eof = eof;
3248 res->count = count;
3249 return 0;
3250}
3251
3252static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3253{
3254 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3255 struct page *page = *rcvbuf->pages;
3256 struct kvec *iov = rcvbuf->head;
3257 unsigned int nr, pglen = rcvbuf->page_len;
3258 uint32_t *end, *entry, *p, *kaddr;
3259 uint32_t len, attrlen;
3260 int hdrlen, recvd, status;
3261
3262 status = decode_op_hdr(xdr, OP_READDIR);
3263 if (status)
3264 return status;
3265 READ_BUF(8);
3266 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3267 dprintk("%s: verifier = 0x%x%x\n",
3268 __FUNCTION__,
3269 ((u32 *)readdir->verifier.data)[0],
3270 ((u32 *)readdir->verifier.data)[1]);
3271
1da177e4
LT		 3272
3273 hdrlen = (char *) p - (char *) iov->iov_base;
3274 recvd = rcvbuf->len - hdrlen;
3275 if (pglen > recvd)
3276 pglen = recvd;
3277 xdr_read_pages(xdr, pglen);
3278
3279 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3280 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3281 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3282 entry = p;
3283 for (nr = 0; *p++; nr++) {
3284 if (p + 3 > end)
3285 goto short_pkt;
eadf4598 3286 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3287 p += 2; /* cookie */
3288 len = ntohl(*p++); /* filename length */
3289 if (len > NFS4_MAXNAMLEN) {
3290 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3291 goto err_unmap;
3292 }
eadf4598 3293 dprintk("filename = %*s\n", len, (char *)p);
1da177e4
LT		 3294 p += XDR_QUADLEN(len);
3295 if (p + 1 > end)
3296 goto short_pkt;
3297 len = ntohl(*p++); /* bitmap length */
3298 p += len;
3299 if (p + 1 > end)
3300 goto short_pkt;
3301 attrlen = XDR_QUADLEN(ntohl(*p++));
3302 p += attrlen; /* attributes */
3303 if (p + 2 > end)
3304 goto short_pkt;
3305 entry = p;
3306 }
3307 if (!nr && (entry[0] != 0 || entry[1] == 0))
3308 goto short_pkt;
3309out:
3310 kunmap_atomic(kaddr, KM_USER0);
3311 return 0;
3312short_pkt:
eadf4598 3313 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3314 entry[0] = entry[1] = 0;
3315 /* truncate listing ? */
3316 if (!nr) {
3317 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3318 entry[1] = 1;
3319 }
3320 goto out;
3321err_unmap:
3322 kunmap_atomic(kaddr, KM_USER0);
3323 return -errno_NFSERR_IO;
3324}
3325
3326static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3327{
3328 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3329 struct kvec *iov = rcvbuf->head;
3330 int hdrlen, len, recvd;
3331 uint32_t *p;
3332 char *kaddr;
3333 int status;
3334
3335 status = decode_op_hdr(xdr, OP_READLINK);
3336 if (status)
3337 return status;
3338
3339 /* Convert length of symlink */
3340 READ_BUF(4);
3341 READ32(len);
3342 if (len >= rcvbuf->page_len || len <= 0) {
3343 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3344 return -ENAMETOOLONG;
3345 }
3346 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3347 recvd = req->rq_rcv_buf.len - hdrlen;
3348 if (recvd < len) {
3349 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3350 "count %u > recvd %u\n", len, recvd);
3351 return -EIO;
3352 }
3353 xdr_read_pages(xdr, len);
3354 /*
3355 * The XDR encode routine has set things up so that
3356 * the link text will be copied directly into the
3357 * buffer. We just have to do overflow-checking,
3358 * and and null-terminate the text (the VFS expects
3359 * null-termination).
3360 */
3361 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3362 kaddr[len+rcvbuf->page_base] = '\0';
3363 kunmap_atomic(kaddr, KM_USER0);
3364 return 0;
3365}
3366
3367static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3368{
3369 int status;
3370
3371 status = decode_op_hdr(xdr, OP_REMOVE);
3372 if (status)
3373 goto out;
3374 status = decode_change_info(xdr, cinfo);
3375out:
3376 return status;
3377}
3378
3379static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3380 struct nfs4_change_info *new_cinfo)
3381{
3382 int status;
3383
3384 status = decode_op_hdr(xdr, OP_RENAME);
3385 if (status)
3386 goto out;
3387 if ((status = decode_change_info(xdr, old_cinfo)))
3388 goto out;
3389 status = decode_change_info(xdr, new_cinfo);
3390out:
3391 return status;
3392}
3393
3394static int decode_renew(struct xdr_stream *xdr)
3395{
3396 return decode_op_hdr(xdr, OP_RENEW);
3397}
3398
56ae19f3
TM		 3399static int
3400decode_restorefh(struct xdr_stream *xdr)
3401{
3402 return decode_op_hdr(xdr, OP_RESTOREFH);
3403}
3404
029d105e
BF		 3405static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3406 size_t *acl_len)
3407{
3408 uint32_t *savep;
3409 uint32_t attrlen,
3410 bitmap[2] = {0};
3411 struct kvec *iov = req->rq_rcv_buf.head;
3412 int status;
3413
3414 *acl_len = 0;
3415 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3416 goto out;
3417 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3418 goto out;
3419 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3420 goto out;
3421
3422 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3423 return -EIO;
3424 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3425 int hdrlen, recvd;
3426
3427 /* We ignore &savep and don't do consistency checks on
3428 * the attr length. Let userspace figure it out.... */
3429 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3430 recvd = req->rq_rcv_buf.len - hdrlen;
3431 if (attrlen > recvd) {
3432 printk(KERN_WARNING "NFS: server cheating in getattr"
3433 " acl reply: attrlen %u > recvd %u\n",
3434 attrlen, recvd);
3435 return -EINVAL;
3436 }
c04871e6 3437 xdr_read_pages(xdr, attrlen);
029d105e 3438 *acl_len = attrlen;
8c233cf9
BF		 3439 } else
3440 status = -EOPNOTSUPP;
029d105e
BF		 3441
3442out:
3443 return status;
3444}
3445
1da177e4
LT		 3446static int
3447decode_savefh(struct xdr_stream *xdr)
3448{
3449 return decode_op_hdr(xdr, OP_SAVEFH);
3450}
3451
3452static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3453{
3454 uint32_t *p;
3455 uint32_t bmlen;
3456 int status;
3457
3458
3459 status = decode_op_hdr(xdr, OP_SETATTR);
3460 if (status)
3461 return status;
3462 READ_BUF(4);
3463 READ32(bmlen);
3464 READ_BUF(bmlen << 2);
3465 return 0;
3466}
3467
3468static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3469{
3470 uint32_t *p;
3471 uint32_t opnum;
3472 int32_t nfserr;
3473
3474 READ_BUF(8);
3475 READ32(opnum);
3476 if (opnum != OP_SETCLIENTID) {
3477 printk(KERN_NOTICE
3478 "nfs4_decode_setclientid: Server returned operation"
3479 " %d\n", opnum);
3480 return -EIO;
3481 }
3482 READ32(nfserr);
3483 if (nfserr == NFS_OK) {
3484 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3485 READ64(clp->cl_clientid);
3486 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3487 } else if (nfserr == NFSERR_CLID_INUSE) {
3488 uint32_t len;
3489
3490 /* skip netid string */
3491 READ_BUF(4);
3492 READ32(len);
3493 READ_BUF(len);
3494
3495 /* skip uaddr string */
3496 READ_BUF(4);
3497 READ32(len);
3498 READ_BUF(len);
3499 return -NFSERR_CLID_INUSE;
3500 } else
3501 return -nfs_stat_to_errno(nfserr);
3502
3503 return 0;
3504}
3505
3506static int decode_setclientid_confirm(struct xdr_stream *xdr)
3507{
3508 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3509}
3510
3511static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3512{
3513 uint32_t *p;
3514 int status;
3515
3516 status = decode_op_hdr(xdr, OP_WRITE);
3517 if (status)
3518 return status;
3519
3520 READ_BUF(16);
3521 READ32(res->count);
3522 READ32(res->verf->committed);
3523 COPYMEM(res->verf->verifier, 8);
3524 return 0;
3525}
3526
3527static int decode_delegreturn(struct xdr_stream *xdr)
3528{
3529 return decode_op_hdr(xdr, OP_DELEGRETURN);
3530}
3531
3532/*
3533 * Decode OPEN_DOWNGRADE response
3534 */
3535static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3536{
3537 struct xdr_stream xdr;
3538 struct compound_hdr hdr;
3539 int status;
3540
3541 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3542 status = decode_compound_hdr(&xdr, &hdr);
3543 if (status)
3544 goto out;
3545 status = decode_putfh(&xdr);
3546 if (status)
3547 goto out;
3548 status = decode_open_downgrade(&xdr, res);
516a6af6
TM		 3549 if (status != 0)
3550 goto out;
3551 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3552out:
3553 return status;
3554}
3555
3556/*
3557 * END OF "GENERIC" DECODE ROUTINES.
3558 */
3559
3560/*
3561 * Decode ACCESS response
3562 */
3563static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3564{
3565 struct xdr_stream xdr;
3566 struct compound_hdr hdr;
3567 int status;
3568
3569 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3570 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3571 goto out;
3572 if ((status = decode_putfh(&xdr)) == 0)
3573 status = decode_access(&xdr, res);
3574out:
3575 return status;
3576}
3577
3578/*
3579 * Decode LOOKUP response
3580 */
3581static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3582{
3583 struct xdr_stream xdr;
3584 struct compound_hdr hdr;
3585 int status;
3586
3587 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3588 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3589 goto out;
3590 if ((status = decode_putfh(&xdr)) != 0)
3591 goto out;
3592 if ((status = decode_lookup(&xdr)) != 0)
3593 goto out;
3594 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3595 goto out;
3596 status = decode_getfattr(&xdr, res->fattr, res->server);
3597out:
3598 return status;
3599}
3600
3601/*
3602 * Decode LOOKUP_ROOT response
3603 */
3604static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3605{
3606 struct xdr_stream xdr;
3607 struct compound_hdr hdr;
3608 int status;
3609
3610 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3611 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3612 goto out;
3613 if ((status = decode_putrootfh(&xdr)) != 0)
3614 goto out;
3615 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3616 status = decode_getfattr(&xdr, res->fattr, res->server);
3617out:
3618 return status;
3619}
3620
3621/*
3622 * Decode REMOVE response
3623 */
16e42959 3624static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_remove_res *res)
1da177e4
LT		 3625{
3626 struct xdr_stream xdr;
3627 struct compound_hdr hdr;
3628 int status;
3629
3630 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3631 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3632 goto out;
16e42959
TM		 3633 if ((status = decode_putfh(&xdr)) != 0)
3634 goto out;
3635 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3636 goto out;
3637 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3638out:
3639 return status;
3640}
3641
3642/*
3643 * Decode RENAME response
3644 */
3645static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3646{
3647 struct xdr_stream xdr;
3648 struct compound_hdr hdr;
3649 int status;
3650
3651 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3652 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3653 goto out;
3654 if ((status = decode_putfh(&xdr)) != 0)
3655 goto out;
3656 if ((status = decode_savefh(&xdr)) != 0)
3657 goto out;
3658 if ((status = decode_putfh(&xdr)) != 0)
3659 goto out;
6caf2c82
TM		 3660 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3661 goto out;
3662 /* Current FH is target directory */
3663 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3664 goto out;
3665 if ((status = decode_restorefh(&xdr)) != 0)
3666 goto out;
3667 decode_getfattr(&xdr, res->old_fattr, res->server);
1da177e4
LT		 3668out:
3669 return status;
3670}
3671
3672/*
3673 * Decode LINK response
3674 */
91ba2eee 3675static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
1da177e4
LT		 3676{
3677 struct xdr_stream xdr;
3678 struct compound_hdr hdr;
3679 int status;
3680
3681 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3682 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3683 goto out;
3684 if ((status = decode_putfh(&xdr)) != 0)
3685 goto out;
3686 if ((status = decode_savefh(&xdr)) != 0)
3687 goto out;
3688 if ((status = decode_putfh(&xdr)) != 0)
3689 goto out;
91ba2eee
TM		 3690 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3691 goto out;
3692 /*
3693 * Note order: OP_LINK leaves the directory as the current
3694 * filehandle.
3695 */
3696 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3697 goto out;
3698 if ((status = decode_restorefh(&xdr)) != 0)
3699 goto out;
3700 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3701out:
3702 return status;
3703}
3704
3705/*
3706 * Decode CREATE response
3707 */
3708static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3709{
3710 struct xdr_stream xdr;
3711 struct compound_hdr hdr;
3712 int status;
3713
3714 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3715 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3716 goto out;
3717 if ((status = decode_putfh(&xdr)) != 0)
3718 goto out;
56ae19f3
TM		 3719 if ((status = decode_savefh(&xdr)) != 0)
3720 goto out;
1da177e4
LT		 3721 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3722 goto out;
3723 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3724 goto out;
56ae19f3
TM		 3725 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3726 goto out;
3727 if ((status = decode_restorefh(&xdr)) != 0)
3728 goto out;
3729 decode_getfattr(&xdr, res->dir_fattr, res->server);
1da177e4
LT		 3730out:
3731 return status;
3732}
3733
3734/*
3735 * Decode SYMLINK response
3736 */
3737static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3738{
3739 return nfs4_xdr_dec_create(rqstp, p, res);
3740}
3741
3742/*
3743 * Decode GETATTR response
3744 */
3745static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3746{
3747 struct xdr_stream xdr;
3748 struct compound_hdr hdr;
3749 int status;
3750
3751 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3752 status = decode_compound_hdr(&xdr, &hdr);
3753 if (status)
3754 goto out;
3755 status = decode_putfh(&xdr);
3756 if (status)
3757 goto out;
3758 status = decode_getfattr(&xdr, res->fattr, res->server);
3759out:
3760 return status;
3761
3762}
3763
23ec6965
BF		 3764/*
3765 * Encode an SETACL request
3766 */
3767static int
3768nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3769{
3770 struct xdr_stream xdr;
3771 struct compound_hdr hdr = {
3772 .nops = 2,
3773 };
3774 int status;
3775
3776 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3777 encode_compound_hdr(&xdr, &hdr);
3778 status = encode_putfh(&xdr, args->fh);
3779 if (status)
3780 goto out;
3781 status = encode_setacl(&xdr, args);
3782out:
3783 return status;
3784}
3785/*
3786 * Decode SETACL response
3787 */
3788static int
3789nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3790{
3791 struct xdr_stream xdr;
3792 struct compound_hdr hdr;
3793 int status;
3794
3795 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3796 status = decode_compound_hdr(&xdr, &hdr);
3797 if (status)
3798 goto out;
3799 status = decode_putfh(&xdr);
3800 if (status)
3801 goto out;
3802 status = decode_setattr(&xdr, res);
3803out:
3804 return status;
3805}
1da177e4 3806
029d105e
BF		 3807/*
3808 * Decode GETACL response
3809 */
3810static int
3811nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3812{
3813 struct xdr_stream xdr;
3814 struct compound_hdr hdr;
3815 int status;
3816
3817 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3818 status = decode_compound_hdr(&xdr, &hdr);
3819 if (status)
3820 goto out;
3821 status = decode_putfh(&xdr);
3822 if (status)
3823 goto out;
3824 status = decode_getacl(&xdr, rqstp, acl_len);
3825
3826out:
3827 return status;
3828}
3829
1da177e4
LT		 3830/*
3831 * Decode CLOSE response
3832 */
3833static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3834{
3835 struct xdr_stream xdr;
3836 struct compound_hdr hdr;
3837 int status;
3838
3839 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3840 status = decode_compound_hdr(&xdr, &hdr);
3841 if (status)
3842 goto out;
3843 status = decode_putfh(&xdr);
3844 if (status)
3845 goto out;
3846 status = decode_close(&xdr, res);
516a6af6
TM		 3847 if (status != 0)
3848 goto out;
3849 /*
3850 * Note: Server may do delete on close for this file
3851 * in which case the getattr call will fail with
3852 * an ESTALE error. Shouldn't be a problem,
3853 * though, since fattr->valid will remain unset.
3854 */
3855 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3856out:
3857 return status;
3858}
3859
3860/*
3861 * Decode OPEN response
3862 */
3863static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3864{
3865 struct xdr_stream xdr;
3866 struct compound_hdr hdr;
3867 int status;
3868
3869 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3870 status = decode_compound_hdr(&xdr, &hdr);
3871 if (status)
3872 goto out;
3873 status = decode_putfh(&xdr);
3874 if (status)
3875 goto out;
56ae19f3
TM		 3876 status = decode_savefh(&xdr);
3877 if (status)
3878 goto out;
1da177e4
LT		 3879 status = decode_open(&xdr, res);
3880 if (status)
3881 goto out;
3882 status = decode_getfh(&xdr, &res->fh);
3883 if (status)
3884 goto out;
56ae19f3
TM		 3885 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3886 goto out;
3887 if ((status = decode_restorefh(&xdr)) != 0)
3888 goto out;
3889 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3890out:
3891 return status;
3892}
3893
3894/*
3895 * Decode OPEN_CONFIRM response
3896 */
3897static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3898{
3899 struct xdr_stream xdr;
3900 struct compound_hdr hdr;
3901 int status;
3902
3903 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3904 status = decode_compound_hdr(&xdr, &hdr);
3905 if (status)
3906 goto out;
3907 status = decode_putfh(&xdr);
3908 if (status)
3909 goto out;
3910 status = decode_open_confirm(&xdr, res);
3911out:
3912 return status;
3913}
3914
3915/*
3916 * Decode OPEN response
3917 */
3918static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3919{
3920 struct xdr_stream xdr;
3921 struct compound_hdr hdr;
3922 int status;
3923
3924 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3925 status = decode_compound_hdr(&xdr, &hdr);
3926 if (status)
3927 goto out;
3928 status = decode_putfh(&xdr);
3929 if (status)
3930 goto out;
3931 status = decode_open(&xdr, res);
864472e9
TM		 3932 if (status)
3933 goto out;
3934 decode_getfattr(&xdr, res->f_attr, res->server);
1da177e4
LT		 3935out:
3936 return status;
3937}
3938
3939/*
3940 * Decode SETATTR response
3941 */
3942static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3943{
3944 struct xdr_stream xdr;
3945 struct compound_hdr hdr;
3946 int status;
3947
3948 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3949 status = decode_compound_hdr(&xdr, &hdr);
3950 if (status)
3951 goto out;
3952 status = decode_putfh(&xdr);
3953 if (status)
3954 goto out;
3955 status = decode_setattr(&xdr, res);
3956 if (status)
3957 goto out;
3958 status = decode_getfattr(&xdr, res->fattr, res->server);
3959 if (status == NFS4ERR_DELAY)
3960 status = 0;
3961out:
3962 return status;
3963}
3964
3965/*
3966 * Decode LOCK response
3967 */
911d1aaf 3968static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lock_res *res)
1da177e4
LT		 3969{
3970 struct xdr_stream xdr;
3971 struct compound_hdr hdr;
3972 int status;
3973
3974 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3975 status = decode_compound_hdr(&xdr, &hdr);
3976 if (status)
3977 goto out;
3978 status = decode_putfh(&xdr);
3979 if (status)
3980 goto out;
3981 status = decode_lock(&xdr, res);
3982out:
3983 return status;
3984}
3985
3986/*
3987 * Decode LOCKT response
3988 */
911d1aaf 3989static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockt_res *res)
1da177e4
LT		 3990{
3991 struct xdr_stream xdr;
3992 struct compound_hdr hdr;
3993 int status;
3994
3995 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3996 status = decode_compound_hdr(&xdr, &hdr);
3997 if (status)
3998 goto out;
3999 status = decode_putfh(&xdr);
4000 if (status)
4001 goto out;
4002 status = decode_lockt(&xdr, res);
4003out:
4004 return status;
4005}
4006
4007/*
4008 * Decode LOCKU response
4009 */
911d1aaf 4010static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_locku_res *res)
1da177e4
LT		 4011{
4012 struct xdr_stream xdr;
4013 struct compound_hdr hdr;
4014 int status;
4015
4016 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4017 status = decode_compound_hdr(&xdr, &hdr);
4018 if (status)
4019 goto out;
4020 status = decode_putfh(&xdr);
4021 if (status)
4022 goto out;
4023 status = decode_locku(&xdr, res);
4024out:
4025 return status;
4026}
4027
4028/*
4029 * Decode READLINK response
4030 */
4031static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
4032{
4033 struct xdr_stream xdr;
4034 struct compound_hdr hdr;
4035 int status;
4036
4037 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4038 status = decode_compound_hdr(&xdr, &hdr);
4039 if (status)
4040 goto out;
4041 status = decode_putfh(&xdr);
4042 if (status)
4043 goto out;
4044 status = decode_readlink(&xdr, rqstp);
4045out:
4046 return status;
4047}
4048
4049/*
4050 * Decode READDIR response
4051 */
4052static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
4053{
4054 struct xdr_stream xdr;
4055 struct compound_hdr hdr;
4056 int status;
4057
4058 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4059 status = decode_compound_hdr(&xdr, &hdr);
4060 if (status)
4061 goto out;
4062 status = decode_putfh(&xdr);
4063 if (status)
4064 goto out;
4065 status = decode_readdir(&xdr, rqstp, res);
4066out:
4067 return status;
4068}
4069
4070/*
4071 * Decode Read response
4072 */
4073static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
4074{
4075 struct xdr_stream xdr;
4076 struct compound_hdr hdr;
4077 int status;
4078
4079 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4080 status = decode_compound_hdr(&xdr, &hdr);
4081 if (status)
4082 goto out;
4083 status = decode_putfh(&xdr);
4084 if (status)
4085 goto out;
4086 status = decode_read(&xdr, rqstp, res);
4087 if (!status)
4088 status = res->count;
4089out:
4090 return status;
4091}
4092
4093/*
4094 * Decode WRITE response
4095 */
4096static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4097{
4098 struct xdr_stream xdr;
4099 struct compound_hdr hdr;
4100 int status;
4101
4102 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4103 status = decode_compound_hdr(&xdr, &hdr);
4104 if (status)
4105 goto out;
4106 status = decode_putfh(&xdr);
4107 if (status)
4108 goto out;
4109 status = decode_write(&xdr, res);
4f9838c7
TM		 4110 if (status)
4111 goto out;
4112 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4113 if (!status)
4114 status = res->count;
4115out:
4116 return status;
4117}
4118
4119/*
4120 * Decode COMMIT response
4121 */
4122static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4123{
4124 struct xdr_stream xdr;
4125 struct compound_hdr hdr;
4126 int status;
4127
4128 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4129 status = decode_compound_hdr(&xdr, &hdr);
4130 if (status)
4131 goto out;
4132 status = decode_putfh(&xdr);
4133 if (status)
4134 goto out;
4135 status = decode_commit(&xdr, res);
4f9838c7
TM		 4136 if (status)
4137 goto out;
4138 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4139out:
4140 return status;
4141}
4142
4143/*
4144 * FSINFO request
4145 */
4146static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4147{
4148 struct xdr_stream xdr;
4149 struct compound_hdr hdr;
4150 int status;
4151
4152 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4153 status = decode_compound_hdr(&xdr, &hdr);
4154 if (!status)
4155 status = decode_putfh(&xdr);
4156 if (!status)
4157 status = decode_fsinfo(&xdr, fsinfo);
4158 if (!status)
4159 status = -nfs_stat_to_errno(hdr.status);
4160 return status;
4161}
4162
4163/*
4164 * PATHCONF request
4165 */
4166static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4167{
4168 struct xdr_stream xdr;
4169 struct compound_hdr hdr;
4170 int status;
4171
4172 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4173 status = decode_compound_hdr(&xdr, &hdr);
4174 if (!status)
4175 status = decode_putfh(&xdr);
4176 if (!status)
4177 status = decode_pathconf(&xdr, pathconf);
4178 return status;
4179}
4180
4181/*
4182 * STATFS request
4183 */
4184static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4185{
4186 struct xdr_stream xdr;
4187 struct compound_hdr hdr;
4188 int status;
4189
4190 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4191 status = decode_compound_hdr(&xdr, &hdr);
4192 if (!status)
4193 status = decode_putfh(&xdr);
4194 if (!status)
4195 status = decode_statfs(&xdr, fsstat);
4196 return status;
4197}
4198
4199/*
4200 * GETATTR_BITMAP request
4201 */
4202static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4203{
4204 struct xdr_stream xdr;
4205 struct compound_hdr hdr;
4206 int status;
4207
4208 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4209 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4210 goto out;
4211 if ((status = decode_putfh(&xdr)) != 0)
4212 goto out;
4213 status = decode_server_caps(&xdr, res);
4214out:
4215 return status;
4216}
4217
4218/*
4219 * Decode RENEW response
4220 */
4221static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4222{
4223 struct xdr_stream xdr;
4224 struct compound_hdr hdr;
4225 int status;
4226
4227 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4228 status = decode_compound_hdr(&xdr, &hdr);
4229 if (!status)
4230 status = decode_renew(&xdr);
4231 return status;
4232}
4233
4234/*
4235 * a SETCLIENTID request
4236 */
4237static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4238 struct nfs4_client *clp)
4239{
4240 struct xdr_stream xdr;
4241 struct compound_hdr hdr;
4242 int status;
4243
4244 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4245 status = decode_compound_hdr(&xdr, &hdr);
4246 if (!status)
4247 status = decode_setclientid(&xdr, clp);
4248 if (!status)
4249 status = -nfs_stat_to_errno(hdr.status);
4250 return status;
4251}
4252
4253/*
4254 * a SETCLIENTID_CONFIRM request
4255 */
4256static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
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_setclientid_confirm(&xdr);
4266 if (!status)
4267 status = decode_putrootfh(&xdr);
4268 if (!status)
4269 status = decode_fsinfo(&xdr, fsinfo);
4270 if (!status)
4271 status = -nfs_stat_to_errno(hdr.status);
4272 return status;
4273}
4274
4275/*
4276 * DELEGRETURN request
4277 */
fa178f29 4278static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_delegreturnres *res)
1da177e4
LT		 4279{
4280 struct xdr_stream xdr;
4281 struct compound_hdr hdr;
4282 int status;
4283
4284 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4285 status = decode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 4286 if (status != 0)
4287 goto out;
4288 status = decode_putfh(&xdr);
4289 if (status != 0)
4290 goto out;
4291 status = decode_delegreturn(&xdr);
4292 decode_getfattr(&xdr, res->fattr, res->server);
4293out:
1da177e4
LT		 4294 return status;
4295}
4296
683b57b4
TM		 4297/*
4298 * FS_LOCATIONS request
4299 */
4300static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs_fs_locations *res)
4301{
4302 struct xdr_stream xdr;
4303 struct compound_hdr hdr;
4304 int status;
4305
4306 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4307 status = decode_compound_hdr(&xdr, &hdr);
4308 if (status != 0)
4309 goto out;
4310 if ((status = decode_putfh(&xdr)) != 0)
4311 goto out;
4312 if ((status = decode_lookup(&xdr)) != 0)
4313 goto out;
4314 xdr_enter_page(&xdr, PAGE_SIZE);
4315 status = decode_getfattr(&xdr, &res->fattr, res->server);
4316out:
4317 return status;
4318}
4319
1da177e4
LT		 4320uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4321{
4322 uint32_t bitmap[2] = {0};
4323 uint32_t len;
4324
4325 if (!*p++) {
4326 if (!*p)
4327 return ERR_PTR(-EAGAIN);
4328 entry->eof = 1;
4329 return ERR_PTR(-EBADCOOKIE);
4330 }
4331
4332 entry->prev_cookie = entry->cookie;
4333 p = xdr_decode_hyper(p, &entry->cookie);
4334 entry->len = ntohl(*p++);
4335 entry->name = (const char *) p;
4336 p += XDR_QUADLEN(entry->len);
4337
4338 /*
4339 * In case the server doesn't return an inode number,
4340 * we fake one here. (We don't use inode number 0,
4341 * since glibc seems to choke on it...)
4342 */
4343 entry->ino = 1;
4344
4345 len = ntohl(*p++); /* bitmap length */
4346 if (len-- > 0) {
4347 bitmap[0] = ntohl(*p++);
4348 if (len-- > 0) {
4349 bitmap[1] = ntohl(*p++);
4350 p += len;
4351 }
4352 }
4353 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4354 if (len > 0) {
97d312d0
MN		 4355 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4356 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4357 /* Ignore the return value of rdattr_error for now */
4358 p++;
4359 len--;
4360 }
1da177e4
LT		 4361 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4362 xdr_decode_hyper(p, &entry->ino);
4363 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4364 xdr_decode_hyper(p, &entry->ino);
4365 p += len;
4366 }
4367
4368 entry->eof = !p[0] && p[1];
4369 return p;
4370}
4371
4372/*
4373 * We need to translate between nfs status return values and
4374 * the local errno values which may not be the same.
4375 */
4376static struct {
4377 int stat;
4378 int errno;
4379} nfs_errtbl[] = {
4380 { NFS4_OK, 0 },
4381 { NFS4ERR_PERM, EPERM },
4382 { NFS4ERR_NOENT, ENOENT },
4383 { NFS4ERR_IO, errno_NFSERR_IO },
4384 { NFS4ERR_NXIO, ENXIO },
4385 { NFS4ERR_ACCESS, EACCES },
4386 { NFS4ERR_EXIST, EEXIST },
4387 { NFS4ERR_XDEV, EXDEV },
4388 { NFS4ERR_NOTDIR, ENOTDIR },
4389 { NFS4ERR_ISDIR, EISDIR },
4390 { NFS4ERR_INVAL, EINVAL },
4391 { NFS4ERR_FBIG, EFBIG },
4392 { NFS4ERR_NOSPC, ENOSPC },
4393 { NFS4ERR_ROFS, EROFS },
4394 { NFS4ERR_MLINK, EMLINK },
4395 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4396 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4397 { NFS4ERR_DQUOT, EDQUOT },
4398 { NFS4ERR_STALE, ESTALE },
4399 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4400 { NFS4ERR_BADOWNER, EINVAL },
4401 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4402 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4403 { NFS4ERR_NOTSUPP, ENOTSUPP },
4404 { NFS4ERR_TOOSMALL, ETOOSMALL },
4405 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4406 { NFS4ERR_BADTYPE, EBADTYPE },
4407 { NFS4ERR_LOCKED, EAGAIN },
4408 { NFS4ERR_RESOURCE, EREMOTEIO },
4409 { NFS4ERR_SYMLINK, ELOOP },
4410 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4411 { NFS4ERR_DEADLOCK, EDEADLK },
4412 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4413 * to be handled by a
4414 * middle-layer.
4415 */
4416 { -1, EIO }
4417};
4418
4419/*
4420 * Convert an NFS error code to a local one.
4421 * This one is used jointly by NFSv2 and NFSv3.
4422 */
4423static int
4424nfs_stat_to_errno(int stat)
4425{
4426 int i;
4427 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4428 if (nfs_errtbl[i].stat == stat)
4429 return nfs_errtbl[i].errno;
4430 }
4431 if (stat <= 10000 || stat > 10100) {
4432 /* The server is looney tunes. */
4433 return ESERVERFAULT;
4434 }
4435 /* If we cannot translate the error, the recovery routines should
4436 * handle it.
4437 * Note: remaining NFSv4 error codes have values > 10000, so should
4438 * not conflict with native Linux error codes.
4439 */
4440 return stat;
4441}
4442
4443#ifndef MAX
4444# define MAX(a, b) (((a) > (b))? (a) : (b))
4445#endif
4446
4447#define PROC(proc, argtype, restype) \
4448[NFSPROC4_CLNT_##proc] = { \
4449 .p_proc = NFSPROC4_COMPOUND, \
4450 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4451 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4452 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
cc0175c1
CL		 4453 .p_statidx = NFSPROC4_CLNT_##proc, \
4454 .p_name = #proc, \
1da177e4
LT		 4455 }
4456
4457struct rpc_procinfo nfs4_procedures[] = {
4458 PROC(READ, enc_read, dec_read),
4459 PROC(WRITE, enc_write, dec_write),
4460 PROC(COMMIT, enc_commit, dec_commit),
4461 PROC(OPEN, enc_open, dec_open),
4462 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4463 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4464 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4465 PROC(CLOSE, enc_close, dec_close),
4466 PROC(SETATTR, enc_setattr, dec_setattr),
4467 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4468 PROC(RENEW, enc_renew, dec_renew),
4469 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4470 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4471 PROC(LOCK, enc_lock, dec_lock),
4472 PROC(LOCKT, enc_lockt, dec_lockt),
4473 PROC(LOCKU, enc_locku, dec_locku),
4474 PROC(ACCESS, enc_access, dec_access),
4475 PROC(GETATTR, enc_getattr, dec_getattr),
4476 PROC(LOOKUP, enc_lookup, dec_lookup),
4477 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4478 PROC(REMOVE, enc_remove, dec_remove),
4479 PROC(RENAME, enc_rename, dec_rename),
4480 PROC(LINK, enc_link, dec_link),
4481 PROC(SYMLINK, enc_symlink, dec_symlink),
4482 PROC(CREATE, enc_create, dec_create),
4483 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4484 PROC(STATFS, enc_statfs, dec_statfs),
4485 PROC(READLINK, enc_readlink, dec_readlink),
4486 PROC(READDIR, enc_readdir, dec_readdir),
4487 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4488 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4489 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4490 PROC(SETACL, enc_setacl, dec_setacl),
683b57b4 4491 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
1da177e4
LT		 4492};
4493
4494struct rpc_version nfs_version4 = {
4495 .number = 4,
e8c96f8c 4496 .nrprocs = ARRAY_SIZE(nfs4_procedures),
1da177e4
LT		 4497 .procs = nfs4_procedures
4498};
4499
4500/*
4501 * Local variables:
4502 * c-basic-offset: 8
4503 * End:
4504 */
Linux kernel - Deliverables
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