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NFSv4: convert fs-locations-components to conform to RFC3530
[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
7aaa0b3b
MN		 2380static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2381{
2382 int n;
2383 uint32_t *p;
2384 int status = 0;
2385
2386 READ_BUF(4);
2387 READ32(n);
2388 if (n <= 0)
2389 goto out_eio;
2390 dprintk("path ");
2391 path->ncomponents = 0;
2392 while (path->ncomponents < n) {
2393 struct nfs4_string *component = &path->components[path->ncomponents];
2394 status = decode_opaque_inline(xdr, &component->len, &component->data);
2395 if (unlikely(status != 0))
2396 goto out_eio;
2397 if (path->ncomponents != n)
2398 dprintk("/");
2399 dprintk("%s", component->data);
2400 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2401 path->ncomponents++;
2402 else {
2403 dprintk("cannot parse %d components in path\n", n);
2404 goto out_eio;
2405 }
2406 }
2407out:
2408 dprintk("\n");
2409 return status;
2410out_eio:
2411 dprintk(" status %d", status);
2412 status = -EIO;
2413 goto out;
2414}
2415
2416static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
683b57b4
TM		 2417{
2418 int n;
2419 uint32_t *p;
2420 int status = -EIO;
2421
2422 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2423 goto out;
2424 status = 0;
2425 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2426 goto out;
7aaa0b3b
MN		 2427 dprintk("%s: fsroot ", __FUNCTION__);
2428 status = decode_pathname(xdr, &res->fs_path);
683b57b4
TM		 2429 if (unlikely(status != 0))
2430 goto out;
2431 READ_BUF(4);
2432 READ32(n);
2433 if (n <= 0)
2434 goto out_eio;
2435 res->nlocations = 0;
2436 while (res->nlocations < n) {
7aaa0b3b
MN		 2437 int m;
2438 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
683b57b4 2439
7aaa0b3b
MN		 2440 READ_BUF(4);
2441 READ32(m);
2442 if (m <= 0)
683b57b4 2443 goto out_eio;
7aaa0b3b
MN		 2444
2445 loc->nservers = 0;
2446 dprintk("%s: servers ", __FUNCTION__);
2447 while (loc->nservers < m) {
2448 struct nfs4_string *server = &loc->servers[loc->nservers];
2449 status = decode_opaque_inline(xdr, &server->len, &server->data);
2450 if (unlikely(status != 0))
2451 goto out_eio;
2452 dprintk("%s ", server->data);
2453 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2454 loc->nservers++;
2455 else {
2456 int i;
2457 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2458 for (i = loc->nservers; i < m; i++) {
2459 int len;
2460 char *data;
2461 status = decode_opaque_inline(xdr, &len, &data);
2462 if (unlikely(status != 0))
2463 goto out_eio;
2464 }
2465 }
2466 }
2467 status = decode_pathname(xdr, &loc->rootpath);
683b57b4
TM		 2468 if (unlikely(status != 0))
2469 goto out_eio;
7aaa0b3b 2470 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
683b57b4
TM		 2471 res->nlocations++;
2472 }
2473out:
2474 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2475 return status;
2476out_eio:
2477 status = -EIO;
2478 goto out;
2479}
2480
1da177e4
LT		 2481static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2482{
2483 uint32_t *p;
2484 int status = 0;
2485
2486 *res = 0;
2487 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2488 return -EIO;
2489 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2490 READ_BUF(8);
2491 READ64(*res);
2492 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2493 }
2494 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2495 return status;
2496}
2497
2498static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2499{
2500 uint32_t *p;
2501 int status = 0;
2502
2503 *maxlink = 1;
2504 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2505 return -EIO;
2506 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2507 READ_BUF(4);
2508 READ32(*maxlink);
2509 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2510 }
2511 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2512 return status;
2513}
2514
2515static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2516{
2517 uint32_t *p;
2518 int status = 0;
2519
2520 *maxname = 1024;
2521 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2522 return -EIO;
2523 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2524 READ_BUF(4);
2525 READ32(*maxname);
2526 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2527 }
2528 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2529 return status;
2530}
2531
2532static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2533{
2534 uint32_t *p;
2535 int status = 0;
2536
2537 *res = 1024;
2538 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2539 return -EIO;
2540 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2541 uint64_t maxread;
2542 READ_BUF(8);
2543 READ64(maxread);
2544 if (maxread > 0x7FFFFFFF)
2545 maxread = 0x7FFFFFFF;
2546 *res = (uint32_t)maxread;
2547 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2548 }
2549 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2550 return status;
2551}
2552
2553static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2554{
2555 uint32_t *p;
2556 int status = 0;
2557
2558 *res = 1024;
2559 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2560 return -EIO;
2561 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2562 uint64_t maxwrite;
2563 READ_BUF(8);
2564 READ64(maxwrite);
2565 if (maxwrite > 0x7FFFFFFF)
2566 maxwrite = 0x7FFFFFFF;
2567 *res = (uint32_t)maxwrite;
2568 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2569 }
2570 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2571 return status;
2572}
2573
2574static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2575{
2576 uint32_t *p;
2577
2578 *mode = 0;
2579 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2580 return -EIO;
2581 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2582 READ_BUF(4);
2583 READ32(*mode);
2584 *mode &= ~S_IFMT;
2585 bitmap[1] &= ~FATTR4_WORD1_MODE;
2586 }
2587 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2588 return 0;
2589}
2590
2591static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2592{
2593 uint32_t *p;
2594
2595 *nlink = 1;
2596 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2597 return -EIO;
2598 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2599 READ_BUF(4);
2600 READ32(*nlink);
2601 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2602 }
2603 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2604 return 0;
2605}
2606
2607static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2608{
2609 uint32_t len, *p;
2610
2611 *uid = -2;
2612 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2613 return -EIO;
2614 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2615 READ_BUF(4);
2616 READ32(len);
2617 READ_BUF(len);
2618 if (len < XDR_MAX_NETOBJ) {
2619 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2620 dprintk("%s: nfs_map_name_to_uid failed!\n",
2621 __FUNCTION__);
2622 } else
2623 printk(KERN_WARNING "%s: name too long (%u)!\n",
2624 __FUNCTION__, len);
2625 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2626 }
2627 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2628 return 0;
2629}
2630
2631static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2632{
2633 uint32_t len, *p;
2634
2635 *gid = -2;
2636 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2637 return -EIO;
2638 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2639 READ_BUF(4);
2640 READ32(len);
2641 READ_BUF(len);
2642 if (len < XDR_MAX_NETOBJ) {
2643 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2644 dprintk("%s: nfs_map_group_to_gid failed!\n",
2645 __FUNCTION__);
2646 } else
2647 printk(KERN_WARNING "%s: name too long (%u)!\n",
2648 __FUNCTION__, len);
2649 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2650 }
2651 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2652 return 0;
2653}
2654
2655static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2656{
2657 uint32_t major = 0, minor = 0, *p;
2658
2659 *rdev = MKDEV(0,0);
2660 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2661 return -EIO;
2662 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2663 dev_t tmp;
2664
2665 READ_BUF(8);
2666 READ32(major);
2667 READ32(minor);
2668 tmp = MKDEV(major, minor);
2669 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2670 *rdev = tmp;
2671 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2672 }
2673 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2674 return 0;
2675}
2676
2677static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2678{
2679 uint32_t *p;
2680 int status = 0;
2681
2682 *res = 0;
2683 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2684 return -EIO;
2685 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2686 READ_BUF(8);
2687 READ64(*res);
2688 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2689 }
2690 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2691 return status;
2692}
2693
2694static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2695{
2696 uint32_t *p;
2697 int status = 0;
2698
2699 *res = 0;
2700 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2701 return -EIO;
2702 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2703 READ_BUF(8);
2704 READ64(*res);
2705 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2706 }
2707 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2708 return status;
2709}
2710
2711static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2712{
2713 uint32_t *p;
2714 int status = 0;
2715
2716 *res = 0;
2717 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2718 return -EIO;
2719 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2720 READ_BUF(8);
2721 READ64(*res);
2722 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2723 }
2724 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2725 return status;
2726}
2727
2728static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2729{
2730 uint32_t *p;
2731
2732 *used = 0;
2733 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2734 return -EIO;
2735 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2736 READ_BUF(8);
2737 READ64(*used);
2738 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2739 }
2740 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2741 (unsigned long long)*used);
2742 return 0;
2743}
2744
2745static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2746{
2747 uint32_t *p;
2748 uint64_t sec;
2749 uint32_t nsec;
2750
2751 READ_BUF(12);
2752 READ64(sec);
2753 READ32(nsec);
2754 time->tv_sec = (time_t)sec;
2755 time->tv_nsec = (long)nsec;
2756 return 0;
2757}
2758
2759static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2760{
2761 int status = 0;
2762
2763 time->tv_sec = 0;
2764 time->tv_nsec = 0;
2765 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2766 return -EIO;
2767 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2768 status = decode_attr_time(xdr, time);
2769 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2770 }
2771 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2772 return status;
2773}
2774
2775static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2776{
2777 int status = 0;
2778
2779 time->tv_sec = 0;
2780 time->tv_nsec = 0;
2781 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2782 return -EIO;
2783 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2784 status = decode_attr_time(xdr, time);
2785 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2786 }
2787 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2788 return status;
2789}
2790
2791static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2792{
2793 int status = 0;
2794
2795 time->tv_sec = 0;
2796 time->tv_nsec = 0;
2797 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2798 return -EIO;
2799 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2800 status = decode_attr_time(xdr, time);
2801 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2802 }
2803 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2804 return status;
2805}
2806
2807static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2808{
2809 unsigned int attrwords = XDR_QUADLEN(attrlen);
2810 unsigned int nwords = xdr->p - savep;
2811
2812 if (unlikely(attrwords != nwords)) {
2813 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2814 __FUNCTION__,
2815 attrwords << 2,
2816 (attrwords < nwords) ? '<' : '>',
2817 nwords << 2);
2818 return -EIO;
2819 }
2820 return 0;
2821}
2822
2823static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2824{
2825 uint32_t *p;
2826
2827 READ_BUF(20);
2828 READ32(cinfo->atomic);
2829 READ64(cinfo->before);
2830 READ64(cinfo->after);
2831 return 0;
2832}
2833
2834static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2835{
2836 uint32_t *p;
2837 uint32_t supp, acc;
2838 int status;
2839
2840 status = decode_op_hdr(xdr, OP_ACCESS);
2841 if (status)
2842 return status;
2843 READ_BUF(8);
2844 READ32(supp);
2845 READ32(acc);
2846 access->supported = supp;
2847 access->access = acc;
2848 return 0;
2849}
2850
2851static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2852{
2853 uint32_t *p;
2854 int status;
2855
2856 status = decode_op_hdr(xdr, OP_CLOSE);
2857 if (status)
2858 return status;
2859 READ_BUF(sizeof(res->stateid.data));
2860 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2861 return 0;
2862}
2863
2864static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2865{
2866 uint32_t *p;
2867 int status;
2868
2869 status = decode_op_hdr(xdr, OP_COMMIT);
2870 if (status)
2871 return status;
2872 READ_BUF(8);
2873 COPYMEM(res->verf->verifier, 8);
2874 return 0;
2875}
2876
2877static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2878{
2879 uint32_t *p;
2880 uint32_t bmlen;
2881 int status;
2882
2883 status = decode_op_hdr(xdr, OP_CREATE);
2884 if (status)
2885 return status;
2886 if ((status = decode_change_info(xdr, cinfo)))
2887 return status;
2888 READ_BUF(4);
2889 READ32(bmlen);
2890 READ_BUF(bmlen << 2);
2891 return 0;
2892}
2893
2894static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2895{
2896 uint32_t *savep;
2897 uint32_t attrlen,
2898 bitmap[2] = {0};
2899 int status;
2900
2901 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2902 goto xdr_error;
2903 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2904 goto xdr_error;
2905 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2906 goto xdr_error;
2907 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2908 goto xdr_error;
2909 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2910 goto xdr_error;
2911 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2912 goto xdr_error;
2913 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2914 goto xdr_error;
2915 status = verify_attr_len(xdr, savep, attrlen);
2916xdr_error:
16c32b71 2917 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2918 return status;
2919}
2920
2921static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2922{
2923 uint32_t *savep;
2924 uint32_t attrlen,
2925 bitmap[2] = {0};
2926 int status;
2927
2928 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2929 goto xdr_error;
2930 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2931 goto xdr_error;
2932 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2933 goto xdr_error;
2934
2935 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2936 goto xdr_error;
2937 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2938 goto xdr_error;
2939 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2940 goto xdr_error;
2941 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2942 goto xdr_error;
2943 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2944 goto xdr_error;
2945 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2946 goto xdr_error;
2947
2948 status = verify_attr_len(xdr, savep, attrlen);
2949xdr_error:
16c32b71 2950 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2951 return status;
2952}
2953
2954static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2955{
2956 uint32_t *savep;
2957 uint32_t attrlen,
2958 bitmap[2] = {0};
2959 int status;
2960
2961 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2962 goto xdr_error;
2963 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2964 goto xdr_error;
2965 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2966 goto xdr_error;
2967
2968 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2969 goto xdr_error;
2970 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2971 goto xdr_error;
2972
2973 status = verify_attr_len(xdr, savep, attrlen);
2974xdr_error:
16c32b71 2975 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 2976 return status;
2977}
2978
2979static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2980{
2981 uint32_t *savep;
2982 uint32_t attrlen,
2983 bitmap[2] = {0},
2984 type;
2985 int status, fmode = 0;
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
2992 fattr->bitmap[0] = bitmap[0];
2993 fattr->bitmap[1] = bitmap[1];
2994
2995 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2996 goto xdr_error;
2997
2998
2999 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3000 goto xdr_error;
3001 fattr->type = nfs_type2fmt[type].nfs2type;
3002 fmode = nfs_type2fmt[type].mode;
3003
3004 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3005 goto xdr_error;
3006 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3007 goto xdr_error;
8b4bdcf8 3008 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
1da177e4
LT		 3009 goto xdr_error;
3010 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3011 goto xdr_error;
683b57b4 3012 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
7aaa0b3b 3013 struct nfs4_fs_locations,
683b57b4
TM		 3014 fattr))) != 0)
3015 goto xdr_error;
1da177e4
LT		 3016 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3017 goto xdr_error;
3018 fattr->mode |= fmode;
3019 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3020 goto xdr_error;
3021 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
3022 goto xdr_error;
3023 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
3024 goto xdr_error;
3025 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3026 goto xdr_error;
3027 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3028 goto xdr_error;
3029 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3030 goto xdr_error;
3031 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3032 goto xdr_error;
3033 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3034 goto xdr_error;
33801147 3035 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 3036 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4 3037xdr_error:
16c32b71 3038 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
1da177e4
LT		 3039 return status;
3040}
3041
3042
3043static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3044{
3045 uint32_t *savep;
3046 uint32_t attrlen, bitmap[2];
3047 int status;
3048
3049 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3050 goto xdr_error;
3051 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3052 goto xdr_error;
3053 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3054 goto xdr_error;
3055
3056 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3057
3058 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3059 goto xdr_error;
3060 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3061 goto xdr_error;
3062 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3063 goto xdr_error;
3064 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3065 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3066 goto xdr_error;
3067 fsinfo->wtpref = fsinfo->wtmax;
3068
3069 status = verify_attr_len(xdr, savep, attrlen);
3070xdr_error:
16c32b71 3071 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3072 return status;
3073}
3074
3075static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3076{
3077 uint32_t *p;
3078 uint32_t len;
3079 int status;
3080
3081 status = decode_op_hdr(xdr, OP_GETFH);
3082 if (status)
3083 return status;
3084 /* Zero handle first to allow comparisons */
3085 memset(fh, 0, sizeof(*fh));
3086
3087 READ_BUF(4);
3088 READ32(len);
3089 if (len > NFS4_FHSIZE)
3090 return -EIO;
3091 fh->size = len;
3092 READ_BUF(len);
3093 COPYMEM(fh->data, len);
3094 return 0;
3095}
3096
3097static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3098{
3099 int status;
3100
3101 status = decode_op_hdr(xdr, OP_LINK);
3102 if (status)
3103 return status;
3104 return decode_change_info(xdr, cinfo);
3105}
3106
3107/*
3108 * We create the owner, so we know a proper owner.id length is 4.
3109 */
911d1aaf 3110static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
1da177e4 3111{
911d1aaf 3112 uint64_t offset, length, clientid;
1da177e4 3113 uint32_t *p;
911d1aaf 3114 uint32_t namelen, type;
1da177e4
LT		 3115
3116 READ_BUF(32);
911d1aaf
TM		 3117 READ64(offset);
3118 READ64(length);
3119 READ32(type);
3120 if (fl != NULL) {
3121 fl->fl_start = (loff_t)offset;
3122 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3123 if (length == ~(uint64_t)0)
3124 fl->fl_end = OFFSET_MAX;
3125 fl->fl_type = F_WRLCK;
3126 if (type & 1)
3127 fl->fl_type = F_RDLCK;
3128 fl->fl_pid = 0;
3129 }
3130 READ64(clientid);
1da177e4
LT		 3131 READ32(namelen);
3132 READ_BUF(namelen);
1da177e4
LT		 3133 return -NFS4ERR_DENIED;
3134}
3135
911d1aaf 3136static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
1da177e4
LT		 3137{
3138 uint32_t *p;
3139 int status;
3140
3141 status = decode_op_hdr(xdr, OP_LOCK);
3142 if (status == 0) {
911d1aaf
TM		 3143 READ_BUF(sizeof(res->stateid.data));
3144 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
1da177e4 3145 } else if (status == -NFS4ERR_DENIED)
911d1aaf 3146 return decode_lock_denied(xdr, NULL);
1da177e4
LT		 3147 return status;
3148}
3149
911d1aaf 3150static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
1da177e4
LT		 3151{
3152 int status;
3153 status = decode_op_hdr(xdr, OP_LOCKT);
3154 if (status == -NFS4ERR_DENIED)
911d1aaf 3155 return decode_lock_denied(xdr, res->denied);
1da177e4
LT		 3156 return status;
3157}
3158
911d1aaf 3159static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
1da177e4
LT		 3160{
3161 uint32_t *p;
3162 int status;
3163
3164 status = decode_op_hdr(xdr, OP_LOCKU);
3165 if (status == 0) {
911d1aaf
TM		 3166 READ_BUF(sizeof(res->stateid.data));
3167 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
1da177e4
LT		 3168 }
3169 return status;
3170}
3171
3172static int decode_lookup(struct xdr_stream *xdr)
3173{
3174 return decode_op_hdr(xdr, OP_LOOKUP);
3175}
3176
3177/* This is too sick! */
3178static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3179{
3180 uint32_t *p;
3181 uint32_t limit_type, nblocks, blocksize;
3182
3183 READ_BUF(12);
3184 READ32(limit_type);
3185 switch (limit_type) {
3186 case 1:
3187 READ64(*maxsize);
3188 break;
3189 case 2:
3190 READ32(nblocks);
3191 READ32(blocksize);
3192 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3193 }
3194 return 0;
3195}
3196
3197static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3198{
3199 uint32_t *p;
3200 uint32_t delegation_type;
3201
3202 READ_BUF(4);
3203 READ32(delegation_type);
3204 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3205 res->delegation_type = 0;
3206 return 0;
3207 }
3208 READ_BUF(20);
3209 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3210 READ32(res->do_recall);
3211 switch (delegation_type) {
3212 case NFS4_OPEN_DELEGATE_READ:
3213 res->delegation_type = FMODE_READ;
3214 break;
3215 case NFS4_OPEN_DELEGATE_WRITE:
3216 res->delegation_type = FMODE_WRITE|FMODE_READ;
3217 if (decode_space_limit(xdr, &res->maxsize) < 0)
3218 return -EIO;
3219 }
3220 return decode_ace(xdr, NULL, res->server->nfs4_state);
3221}
3222
3223static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3224{
3225 uint32_t *p;
3226 uint32_t bmlen;
3227 int status;
3228
3229 status = decode_op_hdr(xdr, OP_OPEN);
3230 if (status)
3231 return status;
3232 READ_BUF(sizeof(res->stateid.data));
3233 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3234
3235 decode_change_info(xdr, &res->cinfo);
3236
3237 READ_BUF(8);
3238 READ32(res->rflags);
3239 READ32(bmlen);
3240 if (bmlen > 10)
3241 goto xdr_error;
3242
3243 READ_BUF(bmlen << 2);
3244 p += bmlen;
3245 return decode_delegation(xdr, res);
3246xdr_error:
16c32b71 3247 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
1da177e4
LT		 3248 return -EIO;
3249}
3250
3251static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3252{
3253 uint32_t *p;
3254 int status;
3255
3256 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3257 if (status)
3258 return status;
3259 READ_BUF(sizeof(res->stateid.data));
3260 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3261 return 0;
3262}
3263
3264static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3265{
3266 uint32_t *p;
3267 int status;
3268
3269 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3270 if (status)
3271 return status;
3272 READ_BUF(sizeof(res->stateid.data));
3273 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3274 return 0;
3275}
3276
3277static int decode_putfh(struct xdr_stream *xdr)
3278{
3279 return decode_op_hdr(xdr, OP_PUTFH);
3280}
3281
3282static int decode_putrootfh(struct xdr_stream *xdr)
3283{
3284 return decode_op_hdr(xdr, OP_PUTROOTFH);
3285}
3286
3287static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3288{
3289 struct kvec *iov = req->rq_rcv_buf.head;
3290 uint32_t *p;
3291 uint32_t count, eof, recvd, hdrlen;
3292 int status;
3293
3294 status = decode_op_hdr(xdr, OP_READ);
3295 if (status)
3296 return status;
3297 READ_BUF(8);
3298 READ32(eof);
3299 READ32(count);
3300 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3301 recvd = req->rq_rcv_buf.len - hdrlen;
3302 if (count > recvd) {
3303 printk(KERN_WARNING "NFS: server cheating in read reply: "
3304 "count %u > recvd %u\n", count, recvd);
3305 count = recvd;
3306 eof = 0;
3307 }
3308 xdr_read_pages(xdr, count);
3309 res->eof = eof;
3310 res->count = count;
3311 return 0;
3312}
3313
3314static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3315{
3316 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3317 struct page *page = *rcvbuf->pages;
3318 struct kvec *iov = rcvbuf->head;
3319 unsigned int nr, pglen = rcvbuf->page_len;
3320 uint32_t *end, *entry, *p, *kaddr;
3321 uint32_t len, attrlen;
3322 int hdrlen, recvd, status;
3323
3324 status = decode_op_hdr(xdr, OP_READDIR);
3325 if (status)
3326 return status;
3327 READ_BUF(8);
3328 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3329 dprintk("%s: verifier = 0x%x%x\n",
3330 __FUNCTION__,
3331 ((u32 *)readdir->verifier.data)[0],
3332 ((u32 *)readdir->verifier.data)[1]);
3333
1da177e4
LT		 3334
3335 hdrlen = (char *) p - (char *) iov->iov_base;
3336 recvd = rcvbuf->len - hdrlen;
3337 if (pglen > recvd)
3338 pglen = recvd;
3339 xdr_read_pages(xdr, pglen);
3340
3341 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3342 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3343 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3344 entry = p;
3345 for (nr = 0; *p++; nr++) {
3346 if (p + 3 > end)
3347 goto short_pkt;
eadf4598 3348 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3349 p += 2; /* cookie */
3350 len = ntohl(*p++); /* filename length */
3351 if (len > NFS4_MAXNAMLEN) {
3352 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3353 goto err_unmap;
3354 }
eadf4598 3355 dprintk("filename = %*s\n", len, (char *)p);
1da177e4
LT		 3356 p += XDR_QUADLEN(len);
3357 if (p + 1 > end)
3358 goto short_pkt;
3359 len = ntohl(*p++); /* bitmap length */
3360 p += len;
3361 if (p + 1 > end)
3362 goto short_pkt;
3363 attrlen = XDR_QUADLEN(ntohl(*p++));
3364 p += attrlen; /* attributes */
3365 if (p + 2 > end)
3366 goto short_pkt;
3367 entry = p;
3368 }
3369 if (!nr && (entry[0] != 0 || entry[1] == 0))
3370 goto short_pkt;
3371out:
3372 kunmap_atomic(kaddr, KM_USER0);
3373 return 0;
3374short_pkt:
eadf4598 3375 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3376 entry[0] = entry[1] = 0;
3377 /* truncate listing ? */
3378 if (!nr) {
3379 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3380 entry[1] = 1;
3381 }
3382 goto out;
3383err_unmap:
3384 kunmap_atomic(kaddr, KM_USER0);
3385 return -errno_NFSERR_IO;
3386}
3387
3388static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3389{
3390 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3391 struct kvec *iov = rcvbuf->head;
3392 int hdrlen, len, recvd;
3393 uint32_t *p;
3394 char *kaddr;
3395 int status;
3396
3397 status = decode_op_hdr(xdr, OP_READLINK);
3398 if (status)
3399 return status;
3400
3401 /* Convert length of symlink */
3402 READ_BUF(4);
3403 READ32(len);
3404 if (len >= rcvbuf->page_len || len <= 0) {
3405 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3406 return -ENAMETOOLONG;
3407 }
3408 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3409 recvd = req->rq_rcv_buf.len - hdrlen;
3410 if (recvd < len) {
3411 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3412 "count %u > recvd %u\n", len, recvd);
3413 return -EIO;
3414 }
3415 xdr_read_pages(xdr, len);
3416 /*
3417 * The XDR encode routine has set things up so that
3418 * the link text will be copied directly into the
3419 * buffer. We just have to do overflow-checking,
3420 * and and null-terminate the text (the VFS expects
3421 * null-termination).
3422 */
3423 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3424 kaddr[len+rcvbuf->page_base] = '\0';
3425 kunmap_atomic(kaddr, KM_USER0);
3426 return 0;
3427}
3428
3429static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3430{
3431 int status;
3432
3433 status = decode_op_hdr(xdr, OP_REMOVE);
3434 if (status)
3435 goto out;
3436 status = decode_change_info(xdr, cinfo);
3437out:
3438 return status;
3439}
3440
3441static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3442 struct nfs4_change_info *new_cinfo)
3443{
3444 int status;
3445
3446 status = decode_op_hdr(xdr, OP_RENAME);
3447 if (status)
3448 goto out;
3449 if ((status = decode_change_info(xdr, old_cinfo)))
3450 goto out;
3451 status = decode_change_info(xdr, new_cinfo);
3452out:
3453 return status;
3454}
3455
3456static int decode_renew(struct xdr_stream *xdr)
3457{
3458 return decode_op_hdr(xdr, OP_RENEW);
3459}
3460
56ae19f3
TM		 3461static int
3462decode_restorefh(struct xdr_stream *xdr)
3463{
3464 return decode_op_hdr(xdr, OP_RESTOREFH);
3465}
3466
029d105e
BF		 3467static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3468 size_t *acl_len)
3469{
3470 uint32_t *savep;
3471 uint32_t attrlen,
3472 bitmap[2] = {0};
3473 struct kvec *iov = req->rq_rcv_buf.head;
3474 int status;
3475
3476 *acl_len = 0;
3477 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3478 goto out;
3479 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3480 goto out;
3481 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3482 goto out;
3483
3484 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3485 return -EIO;
3486 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3487 int hdrlen, recvd;
3488
3489 /* We ignore &savep and don't do consistency checks on
3490 * the attr length. Let userspace figure it out.... */
3491 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3492 recvd = req->rq_rcv_buf.len - hdrlen;
3493 if (attrlen > recvd) {
3494 printk(KERN_WARNING "NFS: server cheating in getattr"
3495 " acl reply: attrlen %u > recvd %u\n",
3496 attrlen, recvd);
3497 return -EINVAL;
3498 }
c04871e6 3499 xdr_read_pages(xdr, attrlen);
029d105e 3500 *acl_len = attrlen;
8c233cf9
BF		 3501 } else
3502 status = -EOPNOTSUPP;
029d105e
BF		 3503
3504out:
3505 return status;
3506}
3507
1da177e4
LT		 3508static int
3509decode_savefh(struct xdr_stream *xdr)
3510{
3511 return decode_op_hdr(xdr, OP_SAVEFH);
3512}
3513
3514static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3515{
3516 uint32_t *p;
3517 uint32_t bmlen;
3518 int status;
3519
3520
3521 status = decode_op_hdr(xdr, OP_SETATTR);
3522 if (status)
3523 return status;
3524 READ_BUF(4);
3525 READ32(bmlen);
3526 READ_BUF(bmlen << 2);
3527 return 0;
3528}
3529
3530static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3531{
3532 uint32_t *p;
3533 uint32_t opnum;
3534 int32_t nfserr;
3535
3536 READ_BUF(8);
3537 READ32(opnum);
3538 if (opnum != OP_SETCLIENTID) {
3539 printk(KERN_NOTICE
3540 "nfs4_decode_setclientid: Server returned operation"
3541 " %d\n", opnum);
3542 return -EIO;
3543 }
3544 READ32(nfserr);
3545 if (nfserr == NFS_OK) {
3546 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3547 READ64(clp->cl_clientid);
3548 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3549 } else if (nfserr == NFSERR_CLID_INUSE) {
3550 uint32_t len;
3551
3552 /* skip netid string */
3553 READ_BUF(4);
3554 READ32(len);
3555 READ_BUF(len);
3556
3557 /* skip uaddr string */
3558 READ_BUF(4);
3559 READ32(len);
3560 READ_BUF(len);
3561 return -NFSERR_CLID_INUSE;
3562 } else
3563 return -nfs_stat_to_errno(nfserr);
3564
3565 return 0;
3566}
3567
3568static int decode_setclientid_confirm(struct xdr_stream *xdr)
3569{
3570 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3571}
3572
3573static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3574{
3575 uint32_t *p;
3576 int status;
3577
3578 status = decode_op_hdr(xdr, OP_WRITE);
3579 if (status)
3580 return status;
3581
3582 READ_BUF(16);
3583 READ32(res->count);
3584 READ32(res->verf->committed);
3585 COPYMEM(res->verf->verifier, 8);
3586 return 0;
3587}
3588
3589static int decode_delegreturn(struct xdr_stream *xdr)
3590{
3591 return decode_op_hdr(xdr, OP_DELEGRETURN);
3592}
3593
3594/*
3595 * Decode OPEN_DOWNGRADE response
3596 */
3597static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3598{
3599 struct xdr_stream xdr;
3600 struct compound_hdr hdr;
3601 int status;
3602
3603 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3604 status = decode_compound_hdr(&xdr, &hdr);
3605 if (status)
3606 goto out;
3607 status = decode_putfh(&xdr);
3608 if (status)
3609 goto out;
3610 status = decode_open_downgrade(&xdr, res);
516a6af6
TM		 3611 if (status != 0)
3612 goto out;
3613 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3614out:
3615 return status;
3616}
3617
3618/*
3619 * END OF "GENERIC" DECODE ROUTINES.
3620 */
3621
3622/*
3623 * Decode ACCESS response
3624 */
3625static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3626{
3627 struct xdr_stream xdr;
3628 struct compound_hdr hdr;
3629 int status;
3630
3631 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3632 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3633 goto out;
3634 if ((status = decode_putfh(&xdr)) == 0)
3635 status = decode_access(&xdr, res);
3636out:
3637 return status;
3638}
3639
3640/*
3641 * Decode LOOKUP response
3642 */
3643static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3644{
3645 struct xdr_stream xdr;
3646 struct compound_hdr hdr;
3647 int status;
3648
3649 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3650 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3651 goto out;
3652 if ((status = decode_putfh(&xdr)) != 0)
3653 goto out;
3654 if ((status = decode_lookup(&xdr)) != 0)
3655 goto out;
3656 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3657 goto out;
3658 status = decode_getfattr(&xdr, res->fattr, res->server);
3659out:
3660 return status;
3661}
3662
3663/*
3664 * Decode LOOKUP_ROOT response
3665 */
3666static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3667{
3668 struct xdr_stream xdr;
3669 struct compound_hdr hdr;
3670 int status;
3671
3672 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3673 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3674 goto out;
3675 if ((status = decode_putrootfh(&xdr)) != 0)
3676 goto out;
3677 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3678 status = decode_getfattr(&xdr, res->fattr, res->server);
3679out:
3680 return status;
3681}
3682
3683/*
3684 * Decode REMOVE response
3685 */
16e42959 3686static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_remove_res *res)
1da177e4
LT		 3687{
3688 struct xdr_stream xdr;
3689 struct compound_hdr hdr;
3690 int status;
3691
3692 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3693 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3694 goto out;
16e42959
TM		 3695 if ((status = decode_putfh(&xdr)) != 0)
3696 goto out;
3697 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3698 goto out;
3699 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3700out:
3701 return status;
3702}
3703
3704/*
3705 * Decode RENAME response
3706 */
3707static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3708{
3709 struct xdr_stream xdr;
3710 struct compound_hdr hdr;
3711 int status;
3712
3713 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3714 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3715 goto out;
3716 if ((status = decode_putfh(&xdr)) != 0)
3717 goto out;
3718 if ((status = decode_savefh(&xdr)) != 0)
3719 goto out;
3720 if ((status = decode_putfh(&xdr)) != 0)
3721 goto out;
6caf2c82
TM		 3722 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3723 goto out;
3724 /* Current FH is target directory */
3725 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3726 goto out;
3727 if ((status = decode_restorefh(&xdr)) != 0)
3728 goto out;
3729 decode_getfattr(&xdr, res->old_fattr, res->server);
1da177e4
LT		 3730out:
3731 return status;
3732}
3733
3734/*
3735 * Decode LINK response
3736 */
91ba2eee 3737static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
1da177e4
LT		 3738{
3739 struct xdr_stream xdr;
3740 struct compound_hdr hdr;
3741 int status;
3742
3743 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3744 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3745 goto out;
3746 if ((status = decode_putfh(&xdr)) != 0)
3747 goto out;
3748 if ((status = decode_savefh(&xdr)) != 0)
3749 goto out;
3750 if ((status = decode_putfh(&xdr)) != 0)
3751 goto out;
91ba2eee
TM		 3752 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3753 goto out;
3754 /*
3755 * Note order: OP_LINK leaves the directory as the current
3756 * filehandle.
3757 */
3758 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3759 goto out;
3760 if ((status = decode_restorefh(&xdr)) != 0)
3761 goto out;
3762 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3763out:
3764 return status;
3765}
3766
3767/*
3768 * Decode CREATE response
3769 */
3770static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3771{
3772 struct xdr_stream xdr;
3773 struct compound_hdr hdr;
3774 int status;
3775
3776 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3777 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3778 goto out;
3779 if ((status = decode_putfh(&xdr)) != 0)
3780 goto out;
56ae19f3
TM		 3781 if ((status = decode_savefh(&xdr)) != 0)
3782 goto out;
1da177e4
LT		 3783 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3784 goto out;
3785 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3786 goto out;
56ae19f3
TM		 3787 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3788 goto out;
3789 if ((status = decode_restorefh(&xdr)) != 0)
3790 goto out;
3791 decode_getfattr(&xdr, res->dir_fattr, res->server);
1da177e4
LT		 3792out:
3793 return status;
3794}
3795
3796/*
3797 * Decode SYMLINK response
3798 */
3799static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3800{
3801 return nfs4_xdr_dec_create(rqstp, p, res);
3802}
3803
3804/*
3805 * Decode GETATTR response
3806 */
3807static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3808{
3809 struct xdr_stream xdr;
3810 struct compound_hdr hdr;
3811 int status;
3812
3813 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3814 status = decode_compound_hdr(&xdr, &hdr);
3815 if (status)
3816 goto out;
3817 status = decode_putfh(&xdr);
3818 if (status)
3819 goto out;
3820 status = decode_getfattr(&xdr, res->fattr, res->server);
3821out:
3822 return status;
3823
3824}
3825
23ec6965
BF		 3826/*
3827 * Encode an SETACL request
3828 */
3829static int
3830nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3831{
3832 struct xdr_stream xdr;
3833 struct compound_hdr hdr = {
3834 .nops = 2,
3835 };
3836 int status;
3837
3838 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3839 encode_compound_hdr(&xdr, &hdr);
3840 status = encode_putfh(&xdr, args->fh);
3841 if (status)
3842 goto out;
3843 status = encode_setacl(&xdr, args);
3844out:
3845 return status;
3846}
3847/*
3848 * Decode SETACL response
3849 */
3850static int
3851nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3852{
3853 struct xdr_stream xdr;
3854 struct compound_hdr hdr;
3855 int status;
3856
3857 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3858 status = decode_compound_hdr(&xdr, &hdr);
3859 if (status)
3860 goto out;
3861 status = decode_putfh(&xdr);
3862 if (status)
3863 goto out;
3864 status = decode_setattr(&xdr, res);
3865out:
3866 return status;
3867}
1da177e4 3868
029d105e
BF		 3869/*
3870 * Decode GETACL response
3871 */
3872static int
3873nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3874{
3875 struct xdr_stream xdr;
3876 struct compound_hdr hdr;
3877 int status;
3878
3879 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3880 status = decode_compound_hdr(&xdr, &hdr);
3881 if (status)
3882 goto out;
3883 status = decode_putfh(&xdr);
3884 if (status)
3885 goto out;
3886 status = decode_getacl(&xdr, rqstp, acl_len);
3887
3888out:
3889 return status;
3890}
3891
1da177e4
LT		 3892/*
3893 * Decode CLOSE response
3894 */
3895static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3896{
3897 struct xdr_stream xdr;
3898 struct compound_hdr hdr;
3899 int status;
3900
3901 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3902 status = decode_compound_hdr(&xdr, &hdr);
3903 if (status)
3904 goto out;
3905 status = decode_putfh(&xdr);
3906 if (status)
3907 goto out;
3908 status = decode_close(&xdr, res);
516a6af6
TM		 3909 if (status != 0)
3910 goto out;
3911 /*
3912 * Note: Server may do delete on close for this file
3913 * in which case the getattr call will fail with
3914 * an ESTALE error. Shouldn't be a problem,
3915 * though, since fattr->valid will remain unset.
3916 */
3917 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3918out:
3919 return status;
3920}
3921
3922/*
3923 * Decode OPEN response
3924 */
3925static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3926{
3927 struct xdr_stream xdr;
3928 struct compound_hdr hdr;
3929 int status;
3930
3931 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3932 status = decode_compound_hdr(&xdr, &hdr);
3933 if (status)
3934 goto out;
3935 status = decode_putfh(&xdr);
3936 if (status)
3937 goto out;
56ae19f3
TM		 3938 status = decode_savefh(&xdr);
3939 if (status)
3940 goto out;
1da177e4
LT		 3941 status = decode_open(&xdr, res);
3942 if (status)
3943 goto out;
3944 status = decode_getfh(&xdr, &res->fh);
3945 if (status)
3946 goto out;
56ae19f3
TM		 3947 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3948 goto out;
3949 if ((status = decode_restorefh(&xdr)) != 0)
3950 goto out;
3951 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3952out:
3953 return status;
3954}
3955
3956/*
3957 * Decode OPEN_CONFIRM response
3958 */
3959static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3960{
3961 struct xdr_stream xdr;
3962 struct compound_hdr hdr;
3963 int status;
3964
3965 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3966 status = decode_compound_hdr(&xdr, &hdr);
3967 if (status)
3968 goto out;
3969 status = decode_putfh(&xdr);
3970 if (status)
3971 goto out;
3972 status = decode_open_confirm(&xdr, res);
3973out:
3974 return status;
3975}
3976
3977/*
3978 * Decode OPEN response
3979 */
3980static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3981{
3982 struct xdr_stream xdr;
3983 struct compound_hdr hdr;
3984 int status;
3985
3986 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3987 status = decode_compound_hdr(&xdr, &hdr);
3988 if (status)
3989 goto out;
3990 status = decode_putfh(&xdr);
3991 if (status)
3992 goto out;
3993 status = decode_open(&xdr, res);
864472e9
TM		 3994 if (status)
3995 goto out;
3996 decode_getfattr(&xdr, res->f_attr, res->server);
1da177e4
LT		 3997out:
3998 return status;
3999}
4000
4001/*
4002 * Decode SETATTR response
4003 */
4004static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
4005{
4006 struct xdr_stream xdr;
4007 struct compound_hdr hdr;
4008 int status;
4009
4010 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4011 status = decode_compound_hdr(&xdr, &hdr);
4012 if (status)
4013 goto out;
4014 status = decode_putfh(&xdr);
4015 if (status)
4016 goto out;
4017 status = decode_setattr(&xdr, res);
4018 if (status)
4019 goto out;
4020 status = decode_getfattr(&xdr, res->fattr, res->server);
4021 if (status == NFS4ERR_DELAY)
4022 status = 0;
4023out:
4024 return status;
4025}
4026
4027/*
4028 * Decode LOCK response
4029 */
911d1aaf 4030static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lock_res *res)
1da177e4
LT		 4031{
4032 struct xdr_stream xdr;
4033 struct compound_hdr hdr;
4034 int status;
4035
4036 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4037 status = decode_compound_hdr(&xdr, &hdr);
4038 if (status)
4039 goto out;
4040 status = decode_putfh(&xdr);
4041 if (status)
4042 goto out;
4043 status = decode_lock(&xdr, res);
4044out:
4045 return status;
4046}
4047
4048/*
4049 * Decode LOCKT response
4050 */
911d1aaf 4051static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockt_res *res)
1da177e4
LT		 4052{
4053 struct xdr_stream xdr;
4054 struct compound_hdr hdr;
4055 int status;
4056
4057 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4058 status = decode_compound_hdr(&xdr, &hdr);
4059 if (status)
4060 goto out;
4061 status = decode_putfh(&xdr);
4062 if (status)
4063 goto out;
4064 status = decode_lockt(&xdr, res);
4065out:
4066 return status;
4067}
4068
4069/*
4070 * Decode LOCKU response
4071 */
911d1aaf 4072static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_locku_res *res)
1da177e4
LT		 4073{
4074 struct xdr_stream xdr;
4075 struct compound_hdr hdr;
4076 int status;
4077
4078 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4079 status = decode_compound_hdr(&xdr, &hdr);
4080 if (status)
4081 goto out;
4082 status = decode_putfh(&xdr);
4083 if (status)
4084 goto out;
4085 status = decode_locku(&xdr, res);
4086out:
4087 return status;
4088}
4089
4090/*
4091 * Decode READLINK response
4092 */
4093static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
4094{
4095 struct xdr_stream xdr;
4096 struct compound_hdr hdr;
4097 int status;
4098
4099 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4100 status = decode_compound_hdr(&xdr, &hdr);
4101 if (status)
4102 goto out;
4103 status = decode_putfh(&xdr);
4104 if (status)
4105 goto out;
4106 status = decode_readlink(&xdr, rqstp);
4107out:
4108 return status;
4109}
4110
4111/*
4112 * Decode READDIR response
4113 */
4114static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
4115{
4116 struct xdr_stream xdr;
4117 struct compound_hdr hdr;
4118 int status;
4119
4120 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4121 status = decode_compound_hdr(&xdr, &hdr);
4122 if (status)
4123 goto out;
4124 status = decode_putfh(&xdr);
4125 if (status)
4126 goto out;
4127 status = decode_readdir(&xdr, rqstp, res);
4128out:
4129 return status;
4130}
4131
4132/*
4133 * Decode Read response
4134 */
4135static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
4136{
4137 struct xdr_stream xdr;
4138 struct compound_hdr hdr;
4139 int status;
4140
4141 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4142 status = decode_compound_hdr(&xdr, &hdr);
4143 if (status)
4144 goto out;
4145 status = decode_putfh(&xdr);
4146 if (status)
4147 goto out;
4148 status = decode_read(&xdr, rqstp, res);
4149 if (!status)
4150 status = res->count;
4151out:
4152 return status;
4153}
4154
4155/*
4156 * Decode WRITE response
4157 */
4158static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4159{
4160 struct xdr_stream xdr;
4161 struct compound_hdr hdr;
4162 int status;
4163
4164 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4165 status = decode_compound_hdr(&xdr, &hdr);
4166 if (status)
4167 goto out;
4168 status = decode_putfh(&xdr);
4169 if (status)
4170 goto out;
4171 status = decode_write(&xdr, res);
4f9838c7
TM		 4172 if (status)
4173 goto out;
4174 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4175 if (!status)
4176 status = res->count;
4177out:
4178 return status;
4179}
4180
4181/*
4182 * Decode COMMIT response
4183 */
4184static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4185{
4186 struct xdr_stream xdr;
4187 struct compound_hdr hdr;
4188 int status;
4189
4190 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4191 status = decode_compound_hdr(&xdr, &hdr);
4192 if (status)
4193 goto out;
4194 status = decode_putfh(&xdr);
4195 if (status)
4196 goto out;
4197 status = decode_commit(&xdr, res);
4f9838c7
TM		 4198 if (status)
4199 goto out;
4200 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4201out:
4202 return status;
4203}
4204
4205/*
4206 * FSINFO request
4207 */
4208static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4209{
4210 struct xdr_stream xdr;
4211 struct compound_hdr hdr;
4212 int status;
4213
4214 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4215 status = decode_compound_hdr(&xdr, &hdr);
4216 if (!status)
4217 status = decode_putfh(&xdr);
4218 if (!status)
4219 status = decode_fsinfo(&xdr, fsinfo);
4220 if (!status)
4221 status = -nfs_stat_to_errno(hdr.status);
4222 return status;
4223}
4224
4225/*
4226 * PATHCONF request
4227 */
4228static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4229{
4230 struct xdr_stream xdr;
4231 struct compound_hdr hdr;
4232 int status;
4233
4234 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4235 status = decode_compound_hdr(&xdr, &hdr);
4236 if (!status)
4237 status = decode_putfh(&xdr);
4238 if (!status)
4239 status = decode_pathconf(&xdr, pathconf);
4240 return status;
4241}
4242
4243/*
4244 * STATFS request
4245 */
4246static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4247{
4248 struct xdr_stream xdr;
4249 struct compound_hdr hdr;
4250 int status;
4251
4252 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4253 status = decode_compound_hdr(&xdr, &hdr);
4254 if (!status)
4255 status = decode_putfh(&xdr);
4256 if (!status)
4257 status = decode_statfs(&xdr, fsstat);
4258 return status;
4259}
4260
4261/*
4262 * GETATTR_BITMAP request
4263 */
4264static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4265{
4266 struct xdr_stream xdr;
4267 struct compound_hdr hdr;
4268 int status;
4269
4270 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4271 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4272 goto out;
4273 if ((status = decode_putfh(&xdr)) != 0)
4274 goto out;
4275 status = decode_server_caps(&xdr, res);
4276out:
4277 return status;
4278}
4279
4280/*
4281 * Decode RENEW response
4282 */
4283static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4284{
4285 struct xdr_stream xdr;
4286 struct compound_hdr hdr;
4287 int status;
4288
4289 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4290 status = decode_compound_hdr(&xdr, &hdr);
4291 if (!status)
4292 status = decode_renew(&xdr);
4293 return status;
4294}
4295
4296/*
4297 * a SETCLIENTID request
4298 */
4299static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4300 struct nfs4_client *clp)
4301{
4302 struct xdr_stream xdr;
4303 struct compound_hdr hdr;
4304 int status;
4305
4306 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4307 status = decode_compound_hdr(&xdr, &hdr);
4308 if (!status)
4309 status = decode_setclientid(&xdr, clp);
4310 if (!status)
4311 status = -nfs_stat_to_errno(hdr.status);
4312 return status;
4313}
4314
4315/*
4316 * a SETCLIENTID_CONFIRM request
4317 */
4318static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4319{
4320 struct xdr_stream xdr;
4321 struct compound_hdr hdr;
4322 int status;
4323
4324 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4325 status = decode_compound_hdr(&xdr, &hdr);
4326 if (!status)
4327 status = decode_setclientid_confirm(&xdr);
4328 if (!status)
4329 status = decode_putrootfh(&xdr);
4330 if (!status)
4331 status = decode_fsinfo(&xdr, fsinfo);
4332 if (!status)
4333 status = -nfs_stat_to_errno(hdr.status);
4334 return status;
4335}
4336
4337/*
4338 * DELEGRETURN request
4339 */
fa178f29 4340static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_delegreturnres *res)
1da177e4
LT		 4341{
4342 struct xdr_stream xdr;
4343 struct compound_hdr hdr;
4344 int status;
4345
4346 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4347 status = decode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 4348 if (status != 0)
4349 goto out;
4350 status = decode_putfh(&xdr);
4351 if (status != 0)
4352 goto out;
4353 status = decode_delegreturn(&xdr);
4354 decode_getfattr(&xdr, res->fattr, res->server);
4355out:
1da177e4
LT		 4356 return status;
4357}
4358
683b57b4
TM		 4359/*
4360 * FS_LOCATIONS request
4361 */
7aaa0b3b 4362static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs_locations *res)
683b57b4
TM		 4363{
4364 struct xdr_stream xdr;
4365 struct compound_hdr hdr;
4366 int status;
4367
4368 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4369 status = decode_compound_hdr(&xdr, &hdr);
4370 if (status != 0)
4371 goto out;
4372 if ((status = decode_putfh(&xdr)) != 0)
4373 goto out;
4374 if ((status = decode_lookup(&xdr)) != 0)
4375 goto out;
4376 xdr_enter_page(&xdr, PAGE_SIZE);
4377 status = decode_getfattr(&xdr, &res->fattr, res->server);
4378out:
4379 return status;
4380}
4381
1da177e4
LT		 4382uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4383{
4384 uint32_t bitmap[2] = {0};
4385 uint32_t len;
4386
4387 if (!*p++) {
4388 if (!*p)
4389 return ERR_PTR(-EAGAIN);
4390 entry->eof = 1;
4391 return ERR_PTR(-EBADCOOKIE);
4392 }
4393
4394 entry->prev_cookie = entry->cookie;
4395 p = xdr_decode_hyper(p, &entry->cookie);
4396 entry->len = ntohl(*p++);
4397 entry->name = (const char *) p;
4398 p += XDR_QUADLEN(entry->len);
4399
4400 /*
4401 * In case the server doesn't return an inode number,
4402 * we fake one here. (We don't use inode number 0,
4403 * since glibc seems to choke on it...)
4404 */
4405 entry->ino = 1;
4406
4407 len = ntohl(*p++); /* bitmap length */
4408 if (len-- > 0) {
4409 bitmap[0] = ntohl(*p++);
4410 if (len-- > 0) {
4411 bitmap[1] = ntohl(*p++);
4412 p += len;
4413 }
4414 }
4415 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4416 if (len > 0) {
97d312d0
MN		 4417 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4418 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4419 /* Ignore the return value of rdattr_error for now */
4420 p++;
4421 len--;
4422 }
1da177e4
LT		 4423 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4424 xdr_decode_hyper(p, &entry->ino);
4425 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4426 xdr_decode_hyper(p, &entry->ino);
4427 p += len;
4428 }
4429
4430 entry->eof = !p[0] && p[1];
4431 return p;
4432}
4433
4434/*
4435 * We need to translate between nfs status return values and
4436 * the local errno values which may not be the same.
4437 */
4438static struct {
4439 int stat;
4440 int errno;
4441} nfs_errtbl[] = {
4442 { NFS4_OK, 0 },
4443 { NFS4ERR_PERM, EPERM },
4444 { NFS4ERR_NOENT, ENOENT },
4445 { NFS4ERR_IO, errno_NFSERR_IO },
4446 { NFS4ERR_NXIO, ENXIO },
4447 { NFS4ERR_ACCESS, EACCES },
4448 { NFS4ERR_EXIST, EEXIST },
4449 { NFS4ERR_XDEV, EXDEV },
4450 { NFS4ERR_NOTDIR, ENOTDIR },
4451 { NFS4ERR_ISDIR, EISDIR },
4452 { NFS4ERR_INVAL, EINVAL },
4453 { NFS4ERR_FBIG, EFBIG },
4454 { NFS4ERR_NOSPC, ENOSPC },
4455 { NFS4ERR_ROFS, EROFS },
4456 { NFS4ERR_MLINK, EMLINK },
4457 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4458 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4459 { NFS4ERR_DQUOT, EDQUOT },
4460 { NFS4ERR_STALE, ESTALE },
4461 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4462 { NFS4ERR_BADOWNER, EINVAL },
4463 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4464 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4465 { NFS4ERR_NOTSUPP, ENOTSUPP },
4466 { NFS4ERR_TOOSMALL, ETOOSMALL },
4467 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4468 { NFS4ERR_BADTYPE, EBADTYPE },
4469 { NFS4ERR_LOCKED, EAGAIN },
4470 { NFS4ERR_RESOURCE, EREMOTEIO },
4471 { NFS4ERR_SYMLINK, ELOOP },
4472 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4473 { NFS4ERR_DEADLOCK, EDEADLK },
4474 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4475 * to be handled by a
4476 * middle-layer.
4477 */
4478 { -1, EIO }
4479};
4480
4481/*
4482 * Convert an NFS error code to a local one.
4483 * This one is used jointly by NFSv2 and NFSv3.
4484 */
4485static int
4486nfs_stat_to_errno(int stat)
4487{
4488 int i;
4489 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4490 if (nfs_errtbl[i].stat == stat)
4491 return nfs_errtbl[i].errno;
4492 }
4493 if (stat <= 10000 || stat > 10100) {
4494 /* The server is looney tunes. */
4495 return ESERVERFAULT;
4496 }
4497 /* If we cannot translate the error, the recovery routines should
4498 * handle it.
4499 * Note: remaining NFSv4 error codes have values > 10000, so should
4500 * not conflict with native Linux error codes.
4501 */
4502 return stat;
4503}
4504
4505#ifndef MAX
4506# define MAX(a, b) (((a) > (b))? (a) : (b))
4507#endif
4508
4509#define PROC(proc, argtype, restype) \
4510[NFSPROC4_CLNT_##proc] = { \
4511 .p_proc = NFSPROC4_COMPOUND, \
4512 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4513 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4514 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
cc0175c1
CL		 4515 .p_statidx = NFSPROC4_CLNT_##proc, \
4516 .p_name = #proc, \
1da177e4
LT		 4517 }
4518
4519struct rpc_procinfo nfs4_procedures[] = {
4520 PROC(READ, enc_read, dec_read),
4521 PROC(WRITE, enc_write, dec_write),
4522 PROC(COMMIT, enc_commit, dec_commit),
4523 PROC(OPEN, enc_open, dec_open),
4524 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4525 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4526 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4527 PROC(CLOSE, enc_close, dec_close),
4528 PROC(SETATTR, enc_setattr, dec_setattr),
4529 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4530 PROC(RENEW, enc_renew, dec_renew),
4531 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4532 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4533 PROC(LOCK, enc_lock, dec_lock),
4534 PROC(LOCKT, enc_lockt, dec_lockt),
4535 PROC(LOCKU, enc_locku, dec_locku),
4536 PROC(ACCESS, enc_access, dec_access),
4537 PROC(GETATTR, enc_getattr, dec_getattr),
4538 PROC(LOOKUP, enc_lookup, dec_lookup),
4539 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4540 PROC(REMOVE, enc_remove, dec_remove),
4541 PROC(RENAME, enc_rename, dec_rename),
4542 PROC(LINK, enc_link, dec_link),
4543 PROC(SYMLINK, enc_symlink, dec_symlink),
4544 PROC(CREATE, enc_create, dec_create),
4545 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4546 PROC(STATFS, enc_statfs, dec_statfs),
4547 PROC(READLINK, enc_readlink, dec_readlink),
4548 PROC(READDIR, enc_readdir, dec_readdir),
4549 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4550 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4551 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4552 PROC(SETACL, enc_setacl, dec_setacl),
683b57b4 4553 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
1da177e4
LT		 4554};
4555
4556struct rpc_version nfs_version4 = {
4557 .number = 4,
e8c96f8c 4558 .nrprocs = ARRAY_SIZE(nfs4_procedures),
1da177e4
LT		 4559 .procs = nfs4_procedures
4560};
4561
4562/*
4563 * Local variables:
4564 * c-basic-offset: 8
4565 * End:
4566 */
Linux kernel - Deliverables
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