projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] NFSv4: ACL support for the NFSv4 client: read
[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)
98#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
99#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
100#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
101#define decode_renew_maxsz (op_decode_hdr_maxsz)
102#define encode_setclientid_maxsz \
103 (op_encode_hdr_maxsz + \
104 4 /*server->ip_addr*/ + \
105 1 /*Netid*/ + \
106 6 /*uaddr*/ + \
107 6 + (NFS4_VERIFIER_SIZE >> 2))
108#define decode_setclientid_maxsz \
109 (op_decode_hdr_maxsz + \
110 2 + \
111 1024) /* large value for CLID_INUSE */
112#define encode_setclientid_confirm_maxsz \
113 (op_encode_hdr_maxsz + \
114 3 + (NFS4_VERIFIER_SIZE >> 2))
115#define decode_setclientid_confirm_maxsz \
116 (op_decode_hdr_maxsz)
117#define encode_lookup_maxsz (op_encode_hdr_maxsz + \
118 1 + ((3 + NFS4_FHSIZE) >> 2))
119#define encode_remove_maxsz (op_encode_hdr_maxsz + \
120 nfs4_name_maxsz)
121#define encode_rename_maxsz (op_encode_hdr_maxsz + \
122 2 * nfs4_name_maxsz)
123#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
124#define encode_link_maxsz (op_encode_hdr_maxsz + \
125 nfs4_name_maxsz)
126#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
127#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
128 1 + nfs4_name_maxsz + \
129 nfs4_path_maxsz + \
96928206 130 nfs4_fattr_maxsz)
1da177e4
LT		 131#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
132#define encode_create_maxsz (op_encode_hdr_maxsz + \
133 2 + nfs4_name_maxsz + \
96928206 134 nfs4_fattr_maxsz)
1da177e4
LT		 135#define decode_create_maxsz (op_decode_hdr_maxsz + 8)
136#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
137#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
138#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
139#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
140#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
141 encode_putfh_maxsz + \
142 op_encode_hdr_maxsz + 7)
143#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
144 decode_putfh_maxsz + \
145 op_decode_hdr_maxsz + 2)
146#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
147 encode_putfh_maxsz + \
148 op_encode_hdr_maxsz)
149#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
150 decode_putfh_maxsz + \
151 op_decode_hdr_maxsz)
152#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
153 encode_putfh_maxsz + \
154 op_encode_hdr_maxsz + 9)
155#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
156 decode_putfh_maxsz + \
157 op_decode_hdr_maxsz + 2)
158#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
159 encode_putfh_maxsz + \
160 op_encode_hdr_maxsz + 8)
161#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
162 decode_putfh_maxsz + \
163 op_decode_hdr_maxsz + 4)
164#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
165 encode_putfh_maxsz + \
166 op_encode_hdr_maxsz + 3)
167#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
168 decode_putfh_maxsz + \
169 op_decode_hdr_maxsz + 2)
170#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
171 encode_putfh_maxsz + \
172 op_encode_hdr_maxsz + \
173 13 + 3 + 2 + 64 + \
174 encode_getattr_maxsz + \
175 encode_getfh_maxsz)
176#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
177 decode_putfh_maxsz + \
178 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
179 decode_getattr_maxsz + \
180 decode_getfh_maxsz)
181#define NFS4_enc_open_confirm_sz \
182 (compound_encode_hdr_maxsz + \
183 encode_putfh_maxsz + \
184 op_encode_hdr_maxsz + 5)
185#define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
186 decode_putfh_maxsz + \
187 op_decode_hdr_maxsz + 4)
188#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
190 op_encode_hdr_maxsz + \
191 11)
192#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
193 decode_putfh_maxsz + \
194 op_decode_hdr_maxsz + \
195 4 + 5 + 2 + 3)
196#define NFS4_enc_open_downgrade_sz \
197 (compound_encode_hdr_maxsz + \
198 encode_putfh_maxsz + \
199 op_encode_hdr_maxsz + 7)
200#define NFS4_dec_open_downgrade_sz \
201 (compound_decode_hdr_maxsz + \
202 decode_putfh_maxsz + \
203 op_decode_hdr_maxsz + 4)
204#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
205 encode_putfh_maxsz + \
206 op_encode_hdr_maxsz + 5)
207#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
208 decode_putfh_maxsz + \
209 op_decode_hdr_maxsz + 4)
210#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
211 encode_putfh_maxsz + \
212 op_encode_hdr_maxsz + 4 + \
96928206 213 nfs4_fattr_maxsz + \
1da177e4
LT		 214 encode_getattr_maxsz)
215#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
216 decode_putfh_maxsz + \
217 op_decode_hdr_maxsz + 3)
218#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
219 encode_putfh_maxsz + \
220 encode_fsinfo_maxsz)
221#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
222 decode_putfh_maxsz + \
223 decode_fsinfo_maxsz)
224#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
225 encode_renew_maxsz)
226#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
227 decode_renew_maxsz)
228#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
229 encode_setclientid_maxsz)
230#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
231 decode_setclientid_maxsz)
232#define NFS4_enc_setclientid_confirm_sz \
233 (compound_encode_hdr_maxsz + \
234 encode_setclientid_confirm_maxsz + \
235 encode_putrootfh_maxsz + \
236 encode_fsinfo_maxsz)
237#define NFS4_dec_setclientid_confirm_sz \
238 (compound_decode_hdr_maxsz + \
239 decode_setclientid_confirm_maxsz + \
240 decode_putrootfh_maxsz + \
241 decode_fsinfo_maxsz)
242#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
243 encode_putfh_maxsz + \
244 encode_getattr_maxsz + \
245 op_encode_hdr_maxsz + \
246 1 + 1 + 2 + 2 + \
247 1 + 4 + 1 + 2 + \
248 owner_id_maxsz)
249#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
250 decode_putfh_maxsz + \
251 decode_getattr_maxsz + \
252 op_decode_hdr_maxsz + \
253 2 + 2 + 1 + 2 + \
254 owner_id_maxsz)
255#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
256 encode_putfh_maxsz + \
257 encode_getattr_maxsz + \
258 op_encode_hdr_maxsz + \
259 1 + 2 + 2 + 2 + \
260 owner_id_maxsz)
261#define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
262#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
263 encode_putfh_maxsz + \
264 encode_getattr_maxsz + \
265 op_encode_hdr_maxsz + \
266 1 + 1 + 4 + 2 + 2)
267#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
268 decode_putfh_maxsz + \
269 decode_getattr_maxsz + \
270 op_decode_hdr_maxsz + 4)
271#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
272 encode_putfh_maxsz + \
273 op_encode_hdr_maxsz + 1)
274#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
275 decode_putfh_maxsz + \
276 op_decode_hdr_maxsz + 2)
277#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
278 encode_putfh_maxsz + \
279 encode_getattr_maxsz)
280#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
281 decode_putfh_maxsz + \
282 decode_getattr_maxsz)
283#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
284 encode_putfh_maxsz + \
285 encode_lookup_maxsz + \
286 encode_getattr_maxsz + \
287 encode_getfh_maxsz)
288#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
289 decode_putfh_maxsz + \
290 op_decode_hdr_maxsz + \
291 decode_getattr_maxsz + \
292 decode_getfh_maxsz)
293#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
294 encode_putrootfh_maxsz + \
295 encode_getattr_maxsz + \
296 encode_getfh_maxsz)
297#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
298 decode_putrootfh_maxsz + \
299 decode_getattr_maxsz + \
300 decode_getfh_maxsz)
301#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
302 encode_putfh_maxsz + \
303 encode_remove_maxsz)
304#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
305 decode_putfh_maxsz + \
306 op_decode_hdr_maxsz + 5)
307#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
308 encode_putfh_maxsz + \
309 encode_savefh_maxsz + \
310 encode_putfh_maxsz + \
311 encode_rename_maxsz)
312#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
313 decode_putfh_maxsz + \
314 decode_savefh_maxsz + \
315 decode_putfh_maxsz + \
316 decode_rename_maxsz)
317#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
318 encode_putfh_maxsz + \
319 encode_savefh_maxsz + \
320 encode_putfh_maxsz + \
321 encode_link_maxsz)
322#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
323 decode_putfh_maxsz + \
324 decode_savefh_maxsz + \
325 decode_putfh_maxsz + \
326 decode_link_maxsz)
327#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
328 encode_putfh_maxsz + \
329 encode_symlink_maxsz + \
330 encode_getattr_maxsz + \
331 encode_getfh_maxsz)
332#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
333 decode_putfh_maxsz + \
334 decode_symlink_maxsz + \
335 decode_getattr_maxsz + \
336 decode_getfh_maxsz)
337#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
338 encode_putfh_maxsz + \
339 encode_create_maxsz + \
340 encode_getattr_maxsz + \
341 encode_getfh_maxsz)
342#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
343 decode_putfh_maxsz + \
344 decode_create_maxsz + \
345 decode_getattr_maxsz + \
346 decode_getfh_maxsz)
347#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
348 encode_putfh_maxsz + \
349 encode_getattr_maxsz)
350#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
351 decode_putfh_maxsz + \
352 decode_getattr_maxsz)
353#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
354 encode_putfh_maxsz + \
355 encode_getattr_maxsz)
356#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
357 decode_putfh_maxsz + \
358 op_decode_hdr_maxsz + 12)
359#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
360 encode_getattr_maxsz)
361#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
362 decode_getattr_maxsz)
363#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
364 encode_putfh_maxsz + \
365 encode_delegreturn_maxsz)
366#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
367 decode_delegreturn_maxsz)
029d105e
BF		 368#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
369 encode_putfh_maxsz + \
370 encode_getattr_maxsz)
371#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
372 decode_putfh_maxsz + \
373 op_decode_hdr_maxsz + \
374 nfs4_fattr_bitmap_maxsz + 1)
1da177e4
LT		 375
376static struct {
377 unsigned int mode;
378 unsigned int nfs2type;
379} nfs_type2fmt[] = {
380 { 0, NFNON },
381 { S_IFREG, NFREG },
382 { S_IFDIR, NFDIR },
383 { S_IFBLK, NFBLK },
384 { S_IFCHR, NFCHR },
385 { S_IFLNK, NFLNK },
386 { S_IFSOCK, NFSOCK },
387 { S_IFIFO, NFFIFO },
388 { 0, NFNON },
389 { 0, NFNON },
390};
391
392struct compound_hdr {
393 int32_t status;
394 uint32_t nops;
395 uint32_t taglen;
396 char * tag;
397};
398
399/*
400 * START OF "GENERIC" ENCODE ROUTINES.
401 * These may look a little ugly since they are imported from a "generic"
402 * set of XDR encode/decode routines which are intended to be shared by
403 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
404 *
405 * If the pain of reading these is too great, it should be a straightforward
406 * task to translate them into Linux-specific versions which are more
407 * consistent with the style used in NFSv2/v3...
408 */
409#define WRITE32(n) *p++ = htonl(n)
410#define WRITE64(n) do { \
411 *p++ = htonl((uint32_t)((n) >> 32)); \
412 *p++ = htonl((uint32_t)(n)); \
413} while (0)
414#define WRITEMEM(ptr,nbytes) do { \
415 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
416} while (0)
417
418#define RESERVE_SPACE(nbytes) do { \
419 p = xdr_reserve_space(xdr, nbytes); \
420 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
421 BUG_ON(!p); \
422} while (0)
423
424static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
425{
426 uint32_t *p;
427
428 p = xdr_reserve_space(xdr, 4 + len);
429 BUG_ON(p == NULL);
430 xdr_encode_opaque(p, str, len);
431}
432
433static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
434{
435 uint32_t *p;
436
437 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
438 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
439 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
440 WRITE32(hdr->taglen);
441 WRITEMEM(hdr->tag, hdr->taglen);
442 WRITE32(NFS4_MINOR_VERSION);
443 WRITE32(hdr->nops);
444 return 0;
445}
446
447static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
448{
449 uint32_t *p;
450
451 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
452 BUG_ON(p == NULL);
453 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
454}
455
456static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
457{
458 char owner_name[IDMAP_NAMESZ];
459 char owner_group[IDMAP_NAMESZ];
460 int owner_namelen = 0;
461 int owner_grouplen = 0;
462 uint32_t *p;
463 uint32_t *q;
464 int len;
465 uint32_t bmval0 = 0;
466 uint32_t bmval1 = 0;
467 int status;
468
469 /*
470 * We reserve enough space to write the entire attribute buffer at once.
471 * In the worst-case, this would be
472 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
473 * = 36 bytes, plus any contribution from variable-length fields
474 * such as owner/group/acl's.
475 */
476 len = 16;
477
478 /* Sigh */
479 if (iap->ia_valid & ATTR_SIZE)
480 len += 8;
481 if (iap->ia_valid & ATTR_MODE)
482 len += 4;
483 if (iap->ia_valid & ATTR_UID) {
484 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
485 if (owner_namelen < 0) {
486 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
487 iap->ia_uid);
488 /* XXX */
489 strcpy(owner_name, "nobody");
490 owner_namelen = sizeof("nobody") - 1;
491 /* goto out; */
492 }
493 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
494 }
495 if (iap->ia_valid & ATTR_GID) {
496 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
497 if (owner_grouplen < 0) {
498 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
499 iap->ia_gid);
500 strcpy(owner_group, "nobody");
501 owner_grouplen = sizeof("nobody") - 1;
502 /* goto out; */
503 }
504 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
505 }
506 if (iap->ia_valid & ATTR_ATIME_SET)
507 len += 16;
508 else if (iap->ia_valid & ATTR_ATIME)
509 len += 4;
510 if (iap->ia_valid & ATTR_MTIME_SET)
511 len += 16;
512 else if (iap->ia_valid & ATTR_MTIME)
513 len += 4;
514 RESERVE_SPACE(len);
515
516 /*
517 * We write the bitmap length now, but leave the bitmap and the attribute
518 * buffer length to be backfilled at the end of this routine.
519 */
520 WRITE32(2);
521 q = p;
522 p += 3;
523
524 if (iap->ia_valid & ATTR_SIZE) {
525 bmval0 |= FATTR4_WORD0_SIZE;
526 WRITE64(iap->ia_size);
527 }
528 if (iap->ia_valid & ATTR_MODE) {
529 bmval1 |= FATTR4_WORD1_MODE;
530 WRITE32(iap->ia_mode);
531 }
532 if (iap->ia_valid & ATTR_UID) {
533 bmval1 |= FATTR4_WORD1_OWNER;
534 WRITE32(owner_namelen);
535 WRITEMEM(owner_name, owner_namelen);
536 }
537 if (iap->ia_valid & ATTR_GID) {
538 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
539 WRITE32(owner_grouplen);
540 WRITEMEM(owner_group, owner_grouplen);
541 }
542 if (iap->ia_valid & ATTR_ATIME_SET) {
543 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
544 WRITE32(NFS4_SET_TO_CLIENT_TIME);
545 WRITE32(0);
546 WRITE32(iap->ia_mtime.tv_sec);
547 WRITE32(iap->ia_mtime.tv_nsec);
548 }
549 else if (iap->ia_valid & ATTR_ATIME) {
550 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
551 WRITE32(NFS4_SET_TO_SERVER_TIME);
552 }
553 if (iap->ia_valid & ATTR_MTIME_SET) {
554 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
555 WRITE32(NFS4_SET_TO_CLIENT_TIME);
556 WRITE32(0);
557 WRITE32(iap->ia_mtime.tv_sec);
558 WRITE32(iap->ia_mtime.tv_nsec);
559 }
560 else if (iap->ia_valid & ATTR_MTIME) {
561 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
562 WRITE32(NFS4_SET_TO_SERVER_TIME);
563 }
564
565 /*
566 * Now we backfill the bitmap and the attribute buffer length.
567 */
568 if (len != ((char *)p - (char *)q) + 4) {
569 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
570 len, ((char *)p - (char *)q) + 4);
571 BUG();
572 }
573 len = (char *)p - (char *)q - 12;
574 *q++ = htonl(bmval0);
575 *q++ = htonl(bmval1);
576 *q++ = htonl(len);
577
578 status = 0;
579/* out: */
580 return status;
581}
582
583static int encode_access(struct xdr_stream *xdr, u32 access)
584{
585 uint32_t *p;
586
587 RESERVE_SPACE(8);
588 WRITE32(OP_ACCESS);
589 WRITE32(access);
590
591 return 0;
592}
593
594static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
595{
596 uint32_t *p;
597
598 RESERVE_SPACE(8+sizeof(arg->stateid.data));
599 WRITE32(OP_CLOSE);
600 WRITE32(arg->seqid);
601 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
602
603 return 0;
604}
605
606static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
607{
608 uint32_t *p;
609
610 RESERVE_SPACE(16);
611 WRITE32(OP_COMMIT);
612 WRITE64(args->offset);
613 WRITE32(args->count);
614
615 return 0;
616}
617
618static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
619{
620 uint32_t *p;
621
622 RESERVE_SPACE(8);
623 WRITE32(OP_CREATE);
624 WRITE32(create->ftype);
625
626 switch (create->ftype) {
627 case NF4LNK:
628 RESERVE_SPACE(4 + create->u.symlink->len);
629 WRITE32(create->u.symlink->len);
630 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
631 break;
632
633 case NF4BLK: case NF4CHR:
634 RESERVE_SPACE(8);
635 WRITE32(create->u.device.specdata1);
636 WRITE32(create->u.device.specdata2);
637 break;
638
639 default:
640 break;
641 }
642
643 RESERVE_SPACE(4 + create->name->len);
644 WRITE32(create->name->len);
645 WRITEMEM(create->name->name, create->name->len);
646
647 return encode_attrs(xdr, create->attrs, create->server);
648}
649
650static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
651{
652 uint32_t *p;
653
654 RESERVE_SPACE(12);
655 WRITE32(OP_GETATTR);
656 WRITE32(1);
657 WRITE32(bitmap);
658 return 0;
659}
660
661static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
662{
663 uint32_t *p;
664
665 RESERVE_SPACE(16);
666 WRITE32(OP_GETATTR);
667 WRITE32(2);
668 WRITE32(bm0);
669 WRITE32(bm1);
670 return 0;
671}
672
673static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
674{
1da177e4
LT		 675 return encode_getattr_two(xdr,
676 bitmask[0] & nfs4_fattr_bitmap[0],
677 bitmask[1] & nfs4_fattr_bitmap[1]);
678}
679
680static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
681{
1da177e4
LT		 682 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
683 bitmask[1] & nfs4_fsinfo_bitmap[1]);
684}
685
686static int encode_getfh(struct xdr_stream *xdr)
687{
688 uint32_t *p;
689
690 RESERVE_SPACE(4);
691 WRITE32(OP_GETFH);
692
693 return 0;
694}
695
696static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
697{
698 uint32_t *p;
699
700 RESERVE_SPACE(8 + name->len);
701 WRITE32(OP_LINK);
702 WRITE32(name->len);
703 WRITEMEM(name->name, name->len);
704
705 return 0;
706}
707
708/*
709 * opcode,type,reclaim,offset,length,new_lock_owner = 32
710 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
711 */
712static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
713{
714 uint32_t *p;
715 struct nfs_lock_opargs *opargs = arg->u.lock;
716
717 RESERVE_SPACE(32);
718 WRITE32(OP_LOCK);
719 WRITE32(arg->type);
720 WRITE32(opargs->reclaim);
721 WRITE64(arg->offset);
722 WRITE64(arg->length);
723 WRITE32(opargs->new_lock_owner);
724 if (opargs->new_lock_owner){
725 struct nfs_open_to_lock *ol = opargs->u.open_lock;
726
727 RESERVE_SPACE(40);
728 WRITE32(ol->open_seqid);
729 WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
730 WRITE32(ol->lock_seqid);
731 WRITE64(ol->lock_owner.clientid);
732 WRITE32(4);
733 WRITE32(ol->lock_owner.id);
734 }
735 else {
736 struct nfs_exist_lock *el = opargs->u.exist_lock;
737
738 RESERVE_SPACE(20);
739 WRITEMEM(&el->stateid, sizeof(el->stateid));
740 WRITE32(el->seqid);
741 }
742
743 return 0;
744}
745
746static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
747{
748 uint32_t *p;
749 struct nfs_lowner *opargs = arg->u.lockt;
750
751 RESERVE_SPACE(40);
752 WRITE32(OP_LOCKT);
753 WRITE32(arg->type);
754 WRITE64(arg->offset);
755 WRITE64(arg->length);
756 WRITE64(opargs->clientid);
757 WRITE32(4);
758 WRITE32(opargs->id);
759
760 return 0;
761}
762
763static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
764{
765 uint32_t *p;
766 struct nfs_locku_opargs *opargs = arg->u.locku;
767
768 RESERVE_SPACE(44);
769 WRITE32(OP_LOCKU);
770 WRITE32(arg->type);
771 WRITE32(opargs->seqid);
772 WRITEMEM(&opargs->stateid, sizeof(opargs->stateid));
773 WRITE64(arg->offset);
774 WRITE64(arg->length);
775
776 return 0;
777}
778
779static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
780{
781 int len = name->len;
782 uint32_t *p;
783
784 RESERVE_SPACE(8 + len);
785 WRITE32(OP_LOOKUP);
786 WRITE32(len);
787 WRITEMEM(name->name, len);
788
789 return 0;
790}
791
792static void encode_share_access(struct xdr_stream *xdr, int open_flags)
793{
794 uint32_t *p;
795
796 RESERVE_SPACE(8);
797 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
798 case FMODE_READ:
799 WRITE32(NFS4_SHARE_ACCESS_READ);
800 break;
801 case FMODE_WRITE:
802 WRITE32(NFS4_SHARE_ACCESS_WRITE);
803 break;
804 case FMODE_READ|FMODE_WRITE:
805 WRITE32(NFS4_SHARE_ACCESS_BOTH);
806 break;
807 default:
808 BUG();
809 }
810 WRITE32(0); /* for linux, share_deny = 0 always */
811}
812
813static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
814{
815 uint32_t *p;
816 /*
817 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
818 * owner 4 = 32
819 */
820 RESERVE_SPACE(8);
821 WRITE32(OP_OPEN);
822 WRITE32(arg->seqid);
823 encode_share_access(xdr, arg->open_flags);
824 RESERVE_SPACE(16);
825 WRITE64(arg->clientid);
826 WRITE32(4);
827 WRITE32(arg->id);
828}
829
830static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
831{
832 uint32_t *p;
833
834 RESERVE_SPACE(4);
835 switch(arg->open_flags & O_EXCL) {
836 case 0:
837 WRITE32(NFS4_CREATE_UNCHECKED);
838 encode_attrs(xdr, arg->u.attrs, arg->server);
839 break;
840 default:
841 WRITE32(NFS4_CREATE_EXCLUSIVE);
842 encode_nfs4_verifier(xdr, &arg->u.verifier);
843 }
844}
845
846static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
847{
848 uint32_t *p;
849
850 RESERVE_SPACE(4);
851 switch (arg->open_flags & O_CREAT) {
852 case 0:
853 WRITE32(NFS4_OPEN_NOCREATE);
854 break;
855 default:
856 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
857 WRITE32(NFS4_OPEN_CREATE);
858 encode_createmode(xdr, arg);
859 }
860}
861
862static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
863{
864 uint32_t *p;
865
866 RESERVE_SPACE(4);
867 switch (delegation_type) {
868 case 0:
869 WRITE32(NFS4_OPEN_DELEGATE_NONE);
870 break;
871 case FMODE_READ:
872 WRITE32(NFS4_OPEN_DELEGATE_READ);
873 break;
874 case FMODE_WRITE|FMODE_READ:
875 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
876 break;
877 default:
878 BUG();
879 }
880}
881
882static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
883{
884 uint32_t *p;
885
886 RESERVE_SPACE(4);
887 WRITE32(NFS4_OPEN_CLAIM_NULL);
888 encode_string(xdr, name->len, name->name);
889}
890
891static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
892{
893 uint32_t *p;
894
895 RESERVE_SPACE(4);
896 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
897 encode_delegation_type(xdr, type);
898}
899
900static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
901{
902 uint32_t *p;
903
904 RESERVE_SPACE(4+sizeof(stateid->data));
905 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
906 WRITEMEM(stateid->data, sizeof(stateid->data));
907 encode_string(xdr, name->len, name->name);
908}
909
910static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
911{
912 encode_openhdr(xdr, arg);
913 encode_opentype(xdr, arg);
914 switch (arg->claim) {
915 case NFS4_OPEN_CLAIM_NULL:
916 encode_claim_null(xdr, arg->name);
917 break;
918 case NFS4_OPEN_CLAIM_PREVIOUS:
919 encode_claim_previous(xdr, arg->u.delegation_type);
920 break;
921 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
922 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
923 break;
924 default:
925 BUG();
926 }
927 return 0;
928}
929
930static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
931{
932 uint32_t *p;
933
934 RESERVE_SPACE(8+sizeof(arg->stateid.data));
935 WRITE32(OP_OPEN_CONFIRM);
936 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
937 WRITE32(arg->seqid);
938
939 return 0;
940}
941
942static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
943{
944 uint32_t *p;
945
946 RESERVE_SPACE(8+sizeof(arg->stateid.data));
947 WRITE32(OP_OPEN_DOWNGRADE);
948 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
949 WRITE32(arg->seqid);
950 encode_share_access(xdr, arg->open_flags);
951 return 0;
952}
953
954static int
955encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
956{
957 int len = fh->size;
958 uint32_t *p;
959
960 RESERVE_SPACE(8 + len);
961 WRITE32(OP_PUTFH);
962 WRITE32(len);
963 WRITEMEM(fh->data, len);
964
965 return 0;
966}
967
968static int encode_putrootfh(struct xdr_stream *xdr)
969{
970 uint32_t *p;
971
972 RESERVE_SPACE(4);
973 WRITE32(OP_PUTROOTFH);
974
975 return 0;
976}
977
978static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
979{
1da177e4
LT		 980 nfs4_stateid stateid;
981 uint32_t *p;
982
983 RESERVE_SPACE(16);
984 if (ctx->state != NULL) {
985 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
986 WRITEMEM(stateid.data, sizeof(stateid.data));
987 } else
988 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
989}
990
991static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
992{
993 uint32_t *p;
994
995 RESERVE_SPACE(4);
996 WRITE32(OP_READ);
997
998 encode_stateid(xdr, args->context);
999
1000 RESERVE_SPACE(12);
1001 WRITE64(args->offset);
1002 WRITE32(args->count);
1003
1004 return 0;
1005}
1006
1007static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1008{
1009 struct rpc_auth *auth = req->rq_task->tk_auth;
1010 int replen;
1011 uint32_t *p;
1012
1013 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1014 WRITE32(OP_READDIR);
1015 WRITE64(readdir->cookie);
1016 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1017 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1018 WRITE32(readdir->count);
1019 WRITE32(2);
1020 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) {
1021 WRITE32(0);
1022 WRITE32(FATTR4_WORD1_MOUNTED_ON_FILEID);
1023 } else {
1024 WRITE32(FATTR4_WORD0_FILEID);
1025 WRITE32(0);
1026 }
1027
1028 /* set up reply kvec
1029 * toplevel_status + taglen + rescount + OP_PUTFH + status
1030 * + OP_READDIR + status + verifer(2) = 9
1031 */
1032 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1033 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1034 readdir->pgbase, readdir->count);
1035
1036 return 0;
1037}
1038
1039static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1040{
1041 struct rpc_auth *auth = req->rq_task->tk_auth;
1042 unsigned int replen;
1043 uint32_t *p;
1044
1045 RESERVE_SPACE(4);
1046 WRITE32(OP_READLINK);
1047
1048 /* set up reply kvec
1049 * toplevel_status + taglen + rescount + OP_PUTFH + status
1050 * + OP_READLINK + status + string length = 8
1051 */
1052 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1053 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1054 readlink->pgbase, readlink->pglen);
1055
1056 return 0;
1057}
1058
1059static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1060{
1061 uint32_t *p;
1062
1063 RESERVE_SPACE(8 + name->len);
1064 WRITE32(OP_REMOVE);
1065 WRITE32(name->len);
1066 WRITEMEM(name->name, name->len);
1067
1068 return 0;
1069}
1070
1071static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1072{
1073 uint32_t *p;
1074
1075 RESERVE_SPACE(8 + oldname->len);
1076 WRITE32(OP_RENAME);
1077 WRITE32(oldname->len);
1078 WRITEMEM(oldname->name, oldname->len);
1079
1080 RESERVE_SPACE(4 + newname->len);
1081 WRITE32(newname->len);
1082 WRITEMEM(newname->name, newname->len);
1083
1084 return 0;
1085}
1086
1087static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1088{
1089 uint32_t *p;
1090
1091 RESERVE_SPACE(12);
1092 WRITE32(OP_RENEW);
1093 WRITE64(client_stateid->cl_clientid);
1094
1095 return 0;
1096}
1097
1098static int
1099encode_savefh(struct xdr_stream *xdr)
1100{
1101 uint32_t *p;
1102
1103 RESERVE_SPACE(4);
1104 WRITE32(OP_SAVEFH);
1105
1106 return 0;
1107}
1108
1109static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1110{
1111 int status;
1112 uint32_t *p;
1113
1114 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1115 WRITE32(OP_SETATTR);
1116 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1117
1118 if ((status = encode_attrs(xdr, arg->iap, server)))
1119 return status;
1120
1121 return 0;
1122}
1123
1124static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1125{
1126 uint32_t *p;
1127
1128 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1129 WRITE32(OP_SETCLIENTID);
1130 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1131
1132 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1133 RESERVE_SPACE(4);
1134 WRITE32(setclientid->sc_prog);
1135 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1136 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1137 RESERVE_SPACE(4);
1138 WRITE32(setclientid->sc_cb_ident);
1139
1140 return 0;
1141}
1142
1143static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1144{
1145 uint32_t *p;
1146
1147 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1148 WRITE32(OP_SETCLIENTID_CONFIRM);
1149 WRITE64(client_state->cl_clientid);
1150 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1151
1152 return 0;
1153}
1154
1155static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1156{
1157 uint32_t *p;
1158
1159 RESERVE_SPACE(4);
1160 WRITE32(OP_WRITE);
1161
1162 encode_stateid(xdr, args->context);
1163
1164 RESERVE_SPACE(16);
1165 WRITE64(args->offset);
1166 WRITE32(args->stable);
1167 WRITE32(args->count);
1168
1169 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1170
1171 return 0;
1172}
1173
1174static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1175{
1176 uint32_t *p;
1177
1178 RESERVE_SPACE(20);
1179
1180 WRITE32(OP_DELEGRETURN);
1181 WRITEMEM(stateid->data, sizeof(stateid->data));
1182 return 0;
1183
1184}
1185/*
1186 * END OF "GENERIC" ENCODE ROUTINES.
1187 */
1188
1189/*
1190 * Encode an ACCESS request
1191 */
1192static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1193{
1194 struct xdr_stream xdr;
1195 struct compound_hdr hdr = {
1196 .nops = 2,
1197 };
1198 int status;
1199
1200 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1201 encode_compound_hdr(&xdr, &hdr);
1202 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1203 status = encode_access(&xdr, args->access);
1204 return status;
1205}
1206
1207/*
1208 * Encode LOOKUP request
1209 */
1210static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1211{
1212 struct xdr_stream xdr;
1213 struct compound_hdr hdr = {
1214 .nops = 4,
1215 };
1216 int status;
1217
1218 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1219 encode_compound_hdr(&xdr, &hdr);
1220 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1221 goto out;
1222 if ((status = encode_lookup(&xdr, args->name)) != 0)
1223 goto out;
1224 if ((status = encode_getfh(&xdr)) != 0)
1225 goto out;
1226 status = encode_getfattr(&xdr, args->bitmask);
1227out:
1228 return status;
1229}
1230
1231/*
1232 * Encode LOOKUP_ROOT request
1233 */
1234static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1235{
1236 struct xdr_stream xdr;
1237 struct compound_hdr hdr = {
1238 .nops = 3,
1239 };
1240 int status;
1241
1242 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1243 encode_compound_hdr(&xdr, &hdr);
1244 if ((status = encode_putrootfh(&xdr)) != 0)
1245 goto out;
1246 if ((status = encode_getfh(&xdr)) == 0)
1247 status = encode_getfattr(&xdr, args->bitmask);
1248out:
1249 return status;
1250}
1251
1252/*
1253 * Encode REMOVE request
1254 */
1255static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1256{
1257 struct xdr_stream xdr;
1258 struct compound_hdr hdr = {
1259 .nops = 2,
1260 };
1261 int status;
1262
1263 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1264 encode_compound_hdr(&xdr, &hdr);
1265 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1266 status = encode_remove(&xdr, args->name);
1267 return status;
1268}
1269
1270/*
1271 * Encode RENAME request
1272 */
1273static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1274{
1275 struct xdr_stream xdr;
1276 struct compound_hdr hdr = {
1277 .nops = 4,
1278 };
1279 int status;
1280
1281 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1282 encode_compound_hdr(&xdr, &hdr);
1283 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1284 goto out;
1285 if ((status = encode_savefh(&xdr)) != 0)
1286 goto out;
1287 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1288 goto out;
1289 status = encode_rename(&xdr, args->old_name, args->new_name);
1290out:
1291 return status;
1292}
1293
1294/*
1295 * Encode LINK request
1296 */
1297static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1298{
1299 struct xdr_stream xdr;
1300 struct compound_hdr hdr = {
1301 .nops = 4,
1302 };
1303 int status;
1304
1305 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1306 encode_compound_hdr(&xdr, &hdr);
1307 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1308 goto out;
1309 if ((status = encode_savefh(&xdr)) != 0)
1310 goto out;
1311 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1312 goto out;
1313 status = encode_link(&xdr, args->name);
1314out:
1315 return status;
1316}
1317
1318/*
1319 * Encode CREATE request
1320 */
1321static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1322{
1323 struct xdr_stream xdr;
1324 struct compound_hdr hdr = {
1325 .nops = 4,
1326 };
1327 int status;
1328
1329 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1330 encode_compound_hdr(&xdr, &hdr);
1331 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1332 goto out;
1333 if ((status = encode_create(&xdr, args)) != 0)
1334 goto out;
1335 if ((status = encode_getfh(&xdr)) != 0)
1336 goto out;
1337 status = encode_getfattr(&xdr, args->bitmask);
1338out:
1339 return status;
1340}
1341
1342/*
1343 * Encode SYMLINK request
1344 */
1345static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1346{
1347 return nfs4_xdr_enc_create(req, p, args);
1348}
1349
1350/*
1351 * Encode GETATTR request
1352 */
1353static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1354{
1355 struct xdr_stream xdr;
1356 struct compound_hdr hdr = {
1357 .nops = 2,
1358 };
1359 int status;
1360
1361 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1362 encode_compound_hdr(&xdr, &hdr);
1363 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1364 status = encode_getfattr(&xdr, args->bitmask);
1365 return status;
1366}
1367
1368/*
1369 * Encode a CLOSE request
1370 */
1371static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1372{
1373 struct xdr_stream xdr;
1374 struct compound_hdr hdr = {
1375 .nops = 2,
1376 };
1377 int status;
1378
1379 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1380 encode_compound_hdr(&xdr, &hdr);
1381 status = encode_putfh(&xdr, args->fh);
1382 if(status)
1383 goto out;
1384 status = encode_close(&xdr, args);
1385out:
1386 return status;
1387}
1388
1389/*
1390 * Encode an OPEN request
1391 */
1392static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1393{
1394 struct xdr_stream xdr;
1395 struct compound_hdr hdr = {
1396 .nops = 4,
1397 };
1398 int status;
1399
1400 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1401 encode_compound_hdr(&xdr, &hdr);
1402 status = encode_putfh(&xdr, args->fh);
1403 if (status)
1404 goto out;
1405 status = encode_open(&xdr, args);
1406 if (status)
1407 goto out;
1408 status = encode_getfh(&xdr);
1409 if (status)
1410 goto out;
1411 status = encode_getfattr(&xdr, args->bitmask);
1412out:
1413 return status;
1414}
1415
1416/*
1417 * Encode an OPEN_CONFIRM request
1418 */
1419static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1420{
1421 struct xdr_stream xdr;
1422 struct compound_hdr hdr = {
1423 .nops = 2,
1424 };
1425 int status;
1426
1427 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1428 encode_compound_hdr(&xdr, &hdr);
1429 status = encode_putfh(&xdr, args->fh);
1430 if(status)
1431 goto out;
1432 status = encode_open_confirm(&xdr, args);
1433out:
1434 return status;
1435}
1436
1437/*
1438 * Encode an OPEN request with no attributes.
1439 */
1440static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1441{
1442 struct xdr_stream xdr;
1443 struct compound_hdr hdr = {
1444 .nops = 2,
1445 };
1446 int status;
1447
1448 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1449 encode_compound_hdr(&xdr, &hdr);
1450 status = encode_putfh(&xdr, args->fh);
1451 if (status)
1452 goto out;
1453 status = encode_open(&xdr, args);
1454out:
1455 return status;
1456}
1457
1458/*
1459 * Encode an OPEN_DOWNGRADE request
1460 */
1461static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1462{
1463 struct xdr_stream xdr;
1464 struct compound_hdr hdr = {
1465 .nops = 2,
1466 };
1467 int status;
1468
1469 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1470 encode_compound_hdr(&xdr, &hdr);
1471 status = encode_putfh(&xdr, args->fh);
1472 if (status)
1473 goto out;
1474 status = encode_open_downgrade(&xdr, args);
1475out:
1476 return status;
1477}
1478
1479/*
1480 * Encode a LOCK request
1481 */
1482static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1483{
1484 struct xdr_stream xdr;
1485 struct compound_hdr hdr = {
1486 .nops = 2,
1487 };
1488 int status;
1489
1490 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1491 encode_compound_hdr(&xdr, &hdr);
1492 status = encode_putfh(&xdr, args->fh);
1493 if(status)
1494 goto out;
1495 status = encode_lock(&xdr, args);
1496out:
1497 return status;
1498}
1499
1500/*
1501 * Encode a LOCKT request
1502 */
1503static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1504{
1505 struct xdr_stream xdr;
1506 struct compound_hdr hdr = {
1507 .nops = 2,
1508 };
1509 int status;
1510
1511 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1512 encode_compound_hdr(&xdr, &hdr);
1513 status = encode_putfh(&xdr, args->fh);
1514 if(status)
1515 goto out;
1516 status = encode_lockt(&xdr, args);
1517out:
1518 return status;
1519}
1520
1521/*
1522 * Encode a LOCKU request
1523 */
1524static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1525{
1526 struct xdr_stream xdr;
1527 struct compound_hdr hdr = {
1528 .nops = 2,
1529 };
1530 int status;
1531
1532 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1533 encode_compound_hdr(&xdr, &hdr);
1534 status = encode_putfh(&xdr, args->fh);
1535 if(status)
1536 goto out;
1537 status = encode_locku(&xdr, args);
1538out:
1539 return status;
1540}
1541
1542/*
1543 * Encode a READLINK request
1544 */
1545static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1546{
1547 struct xdr_stream xdr;
1548 struct compound_hdr hdr = {
1549 .nops = 2,
1550 };
1551 int status;
1552
1553 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1554 encode_compound_hdr(&xdr, &hdr);
1555 status = encode_putfh(&xdr, args->fh);
1556 if(status)
1557 goto out;
1558 status = encode_readlink(&xdr, args, req);
1559out:
1560 return status;
1561}
1562
1563/*
1564 * Encode a READDIR request
1565 */
1566static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1567{
1568 struct xdr_stream xdr;
1569 struct compound_hdr hdr = {
1570 .nops = 2,
1571 };
1572 int status;
1573
1574 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1575 encode_compound_hdr(&xdr, &hdr);
1576 status = encode_putfh(&xdr, args->fh);
1577 if(status)
1578 goto out;
1579 status = encode_readdir(&xdr, args, req);
1580out:
1581 return status;
1582}
1583
1584/*
1585 * Encode a READ request
1586 */
1587static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1588{
1589 struct rpc_auth *auth = req->rq_task->tk_auth;
1590 struct xdr_stream xdr;
1591 struct compound_hdr hdr = {
1592 .nops = 2,
1593 };
1594 int replen, status;
1595
1596 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1597 encode_compound_hdr(&xdr, &hdr);
1598 status = encode_putfh(&xdr, args->fh);
1599 if (status)
1600 goto out;
1601 status = encode_read(&xdr, args);
1602 if (status)
1603 goto out;
1604
1605 /* set up reply kvec
1606 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1607 * + OP_READ + status + eof + datalen = 9
1608 */
1609 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1610 xdr_inline_pages(&req->rq_rcv_buf, replen,
1611 args->pages, args->pgbase, args->count);
1612out:
1613 return status;
1614}
1615
1616/*
1617 * Encode an SETATTR request
1618 */
1619static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1620
1621{
1622 struct xdr_stream xdr;
1623 struct compound_hdr hdr = {
1624 .nops = 3,
1625 };
1626 int status;
1627
1628 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1629 encode_compound_hdr(&xdr, &hdr);
1630 status = encode_putfh(&xdr, args->fh);
1631 if(status)
1632 goto out;
1633 status = encode_setattr(&xdr, args, args->server);
1634 if(status)
1635 goto out;
1636 status = encode_getfattr(&xdr, args->bitmask);
1637out:
1638 return status;
1639}
1640
029d105e
BF		 1641/*
1642 * Encode a GETACL request
1643 */
1644static int
1645nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1646 struct nfs_getaclargs *args)
1647{
1648 struct xdr_stream xdr;
1649 struct rpc_auth *auth = req->rq_task->tk_auth;
1650 struct compound_hdr hdr = {
1651 .nops = 2,
1652 };
1653 int replen, status;
1654
1655 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1656 encode_compound_hdr(&xdr, &hdr);
1657 status = encode_putfh(&xdr, args->fh);
1658 if (status)
1659 goto out;
1660 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1661 /* set up reply buffer: */
1662 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1663 xdr_inline_pages(&req->rq_rcv_buf, replen,
1664 args->acl_pages, args->acl_pgbase, args->acl_len);
1665out:
1666 return status;
1667}
1668
1da177e4
LT		 1669/*
1670 * Encode a WRITE request
1671 */
1672static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1673{
1674 struct xdr_stream xdr;
1675 struct compound_hdr hdr = {
1676 .nops = 2,
1677 };
1678 int status;
1679
1680 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1681 encode_compound_hdr(&xdr, &hdr);
1682 status = encode_putfh(&xdr, args->fh);
1683 if (status)
1684 goto out;
1685 status = encode_write(&xdr, args);
1686out:
1687 return status;
1688}
1689
1690/*
1691 * a COMMIT request
1692 */
1693static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1694{
1695 struct xdr_stream xdr;
1696 struct compound_hdr hdr = {
1697 .nops = 2,
1698 };
1699 int status;
1700
1701 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1702 encode_compound_hdr(&xdr, &hdr);
1703 status = encode_putfh(&xdr, args->fh);
1704 if (status)
1705 goto out;
1706 status = encode_commit(&xdr, args);
1707out:
1708 return status;
1709}
1710
1711/*
1712 * FSINFO request
1713 */
1714static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1715{
1716 struct xdr_stream xdr;
1717 struct compound_hdr hdr = {
1718 .nops = 2,
1719 };
1720 int status;
1721
1722 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1723 encode_compound_hdr(&xdr, &hdr);
1724 status = encode_putfh(&xdr, args->fh);
1725 if (!status)
1726 status = encode_fsinfo(&xdr, args->bitmask);
1727 return status;
1728}
1729
1730/*
1731 * a PATHCONF request
1732 */
1733static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1734{
1da177e4
LT		 1735 struct xdr_stream xdr;
1736 struct compound_hdr hdr = {
1737 .nops = 2,
1738 };
1739 int status;
1740
1741 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1742 encode_compound_hdr(&xdr, &hdr);
1743 status = encode_putfh(&xdr, args->fh);
1744 if (!status)
1745 status = encode_getattr_one(&xdr,
1746 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1747 return status;
1748}
1749
1750/*
1751 * a STATFS request
1752 */
1753static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1754{
1da177e4
LT		 1755 struct xdr_stream xdr;
1756 struct compound_hdr hdr = {
1757 .nops = 2,
1758 };
1759 int status;
1760
1761 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1762 encode_compound_hdr(&xdr, &hdr);
1763 status = encode_putfh(&xdr, args->fh);
1764 if (status == 0)
1765 status = encode_getattr_two(&xdr,
1766 args->bitmask[0] & nfs4_statfs_bitmap[0],
1767 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1768 return status;
1769}
1770
1771/*
1772 * GETATTR_BITMAP request
1773 */
1774static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1775{
1776 struct xdr_stream xdr;
1777 struct compound_hdr hdr = {
1778 .nops = 2,
1779 };
1780 int status;
1781
1782 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1783 encode_compound_hdr(&xdr, &hdr);
1784 status = encode_putfh(&xdr, fhandle);
1785 if (status == 0)
1786 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1787 FATTR4_WORD0_LINK_SUPPORT|
1788 FATTR4_WORD0_SYMLINK_SUPPORT|
1789 FATTR4_WORD0_ACLSUPPORT);
1790 return status;
1791}
1792
1793/*
1794 * a RENEW request
1795 */
1796static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1797{
1798 struct xdr_stream xdr;
1799 struct compound_hdr hdr = {
1800 .nops = 1,
1801 };
1802
1803 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1804 encode_compound_hdr(&xdr, &hdr);
1805 return encode_renew(&xdr, clp);
1806}
1807
1808/*
1809 * a SETCLIENTID request
1810 */
1811static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1812{
1813 struct xdr_stream xdr;
1814 struct compound_hdr hdr = {
1815 .nops = 1,
1816 };
1817
1818 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1819 encode_compound_hdr(&xdr, &hdr);
1820 return encode_setclientid(&xdr, sc);
1821}
1822
1823/*
1824 * a SETCLIENTID_CONFIRM request
1825 */
1826static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1827{
1828 struct xdr_stream xdr;
1829 struct compound_hdr hdr = {
1830 .nops = 3,
1831 };
1832 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1833 int status;
1834
1835 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1836 encode_compound_hdr(&xdr, &hdr);
1837 status = encode_setclientid_confirm(&xdr, clp);
1838 if (!status)
1839 status = encode_putrootfh(&xdr);
1840 if (!status)
1841 status = encode_fsinfo(&xdr, lease_bitmap);
1842 return status;
1843}
1844
1845/*
1846 * DELEGRETURN request
1847 */
1848static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1849{
1850 struct xdr_stream xdr;
1851 struct compound_hdr hdr = {
1852 .nops = 2,
1853 };
1854 int status;
1855
1856 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1857 encode_compound_hdr(&xdr, &hdr);
1858 if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1859 status = encode_delegreturn(&xdr, args->stateid);
1860 return status;
1861}
1862
1863/*
1864 * START OF "GENERIC" DECODE ROUTINES.
1865 * These may look a little ugly since they are imported from a "generic"
1866 * set of XDR encode/decode routines which are intended to be shared by
1867 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1868 *
1869 * If the pain of reading these is too great, it should be a straightforward
1870 * task to translate them into Linux-specific versions which are more
1871 * consistent with the style used in NFSv2/v3...
1872 */
1873#define READ32(x) (x) = ntohl(*p++)
1874#define READ64(x) do { \
1875 (x) = (u64)ntohl(*p++) << 32; \
1876 (x) |= ntohl(*p++); \
1877} while (0)
1878#define READTIME(x) do { \
1879 p++; \
1880 (x.tv_sec) = ntohl(*p++); \
1881 (x.tv_nsec) = ntohl(*p++); \
1882} while (0)
1883#define COPYMEM(x,nbytes) do { \
1884 memcpy((x), p, nbytes); \
1885 p += XDR_QUADLEN(nbytes); \
1886} while (0)
1887
1888#define READ_BUF(nbytes) do { \
1889 p = xdr_inline_decode(xdr, nbytes); \
1890 if (!p) { \
1891 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
1892 __FUNCTION__, __LINE__); \
1893 return -EIO; \
1894 } \
1895} while (0)
1896
1897static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
1898{
1899 uint32_t *p;
1900
1901 READ_BUF(4);
1902 READ32(*len);
1903 READ_BUF(*len);
1904 *string = (char *)p;
1905 return 0;
1906}
1907
1908static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
1909{
1910 uint32_t *p;
1911
1912 READ_BUF(8);
1913 READ32(hdr->status);
1914 READ32(hdr->taglen);
1915
1916 READ_BUF(hdr->taglen + 4);
1917 hdr->tag = (char *)p;
1918 p += XDR_QUADLEN(hdr->taglen);
1919 READ32(hdr->nops);
1920 return 0;
1921}
1922
1923static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
1924{
1925 uint32_t *p;
1926 uint32_t opnum;
1927 int32_t nfserr;
1928
1929 READ_BUF(8);
1930 READ32(opnum);
1931 if (opnum != expected) {
1932 printk(KERN_NOTICE
1933 "nfs4_decode_op_hdr: Server returned operation"
1934 " %d but we issued a request for %d\n",
1935 opnum, expected);
1936 return -EIO;
1937 }
1938 READ32(nfserr);
1939 if (nfserr != NFS_OK)
1940 return -nfs_stat_to_errno(nfserr);
1941 return 0;
1942}
1943
1944/* Dummy routine */
1945static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
1946{
1947 uint32_t *p;
1948 uint32_t strlen;
1949 char *str;
1950
1951 READ_BUF(12);
1952 return decode_opaque_inline(xdr, &strlen, &str);
1953}
1954
1955static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
1956{
1957 uint32_t bmlen, *p;
1958
1959 READ_BUF(4);
1960 READ32(bmlen);
1961
1962 bitmap[0] = bitmap[1] = 0;
1963 READ_BUF((bmlen << 2));
1964 if (bmlen > 0) {
1965 READ32(bitmap[0]);
1966 if (bmlen > 1)
1967 READ32(bitmap[1]);
1968 }
1969 return 0;
1970}
1971
1972static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
1973{
1974 uint32_t *p;
1975
1976 READ_BUF(4);
1977 READ32(*attrlen);
1978 *savep = xdr->p;
1979 return 0;
1980}
1981
1982static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
1983{
1984 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
1985 decode_attr_bitmap(xdr, bitmask);
1986 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
1987 } else
1988 bitmask[0] = bitmask[1] = 0;
1989 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
1990 return 0;
1991}
1992
1993static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
1994{
1995 uint32_t *p;
1996
1997 *type = 0;
1998 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
1999 return -EIO;
2000 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2001 READ_BUF(4);
2002 READ32(*type);
2003 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2004 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2005 return -EIO;
2006 }
2007 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2008 }
2009 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2010 return 0;
2011}
2012
2013static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2014{
2015 uint32_t *p;
2016
2017 *change = 0;
2018 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2019 return -EIO;
2020 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2021 READ_BUF(8);
2022 READ64(*change);
2023 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2024 }
2025 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2026 (unsigned long long)*change);
2027 return 0;
2028}
2029
2030static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2031{
2032 uint32_t *p;
2033
2034 *size = 0;
2035 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2036 return -EIO;
2037 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2038 READ_BUF(8);
2039 READ64(*size);
2040 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2041 }
2042 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2043 return 0;
2044}
2045
2046static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2047{
2048 uint32_t *p;
2049
2050 *res = 0;
2051 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2052 return -EIO;
2053 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2054 READ_BUF(4);
2055 READ32(*res);
2056 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2057 }
2058 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2059 return 0;
2060}
2061
2062static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2063{
2064 uint32_t *p;
2065
2066 *res = 0;
2067 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2068 return -EIO;
2069 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2070 READ_BUF(4);
2071 READ32(*res);
2072 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2073 }
2074 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2075 return 0;
2076}
2077
2078static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2079{
2080 uint32_t *p;
2081
2082 fsid->major = 0;
2083 fsid->minor = 0;
2084 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2085 return -EIO;
2086 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2087 READ_BUF(16);
2088 READ64(fsid->major);
2089 READ64(fsid->minor);
2090 bitmap[0] &= ~FATTR4_WORD0_FSID;
2091 }
2092 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2093 (unsigned long long)fsid->major,
2094 (unsigned long long)fsid->minor);
2095 return 0;
2096}
2097
2098static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2099{
2100 uint32_t *p;
2101
2102 *res = 60;
2103 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2104 return -EIO;
2105 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2106 READ_BUF(4);
2107 READ32(*res);
2108 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2109 }
2110 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2111 return 0;
2112}
2113
2114static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2115{
2116 uint32_t *p;
2117
2118 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2119 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2120 return -EIO;
2121 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2122 READ_BUF(4);
2123 READ32(*res);
2124 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2125 }
2126 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2127 return 0;
2128}
2129
2130static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2131{
2132 uint32_t *p;
2133
2134 *fileid = 0;
2135 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2136 return -EIO;
2137 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2138 READ_BUF(8);
2139 READ64(*fileid);
2140 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2141 }
2142 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2143 return 0;
2144}
2145
2146static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2147{
2148 uint32_t *p;
2149 int status = 0;
2150
2151 *res = 0;
2152 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2153 return -EIO;
2154 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2155 READ_BUF(8);
2156 READ64(*res);
2157 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2158 }
2159 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2160 return status;
2161}
2162
2163static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2164{
2165 uint32_t *p;
2166 int status = 0;
2167
2168 *res = 0;
2169 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2170 return -EIO;
2171 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2172 READ_BUF(8);
2173 READ64(*res);
2174 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2175 }
2176 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2177 return status;
2178}
2179
2180static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2181{
2182 uint32_t *p;
2183 int status = 0;
2184
2185 *res = 0;
2186 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2187 return -EIO;
2188 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2189 READ_BUF(8);
2190 READ64(*res);
2191 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2192 }
2193 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2194 return status;
2195}
2196
2197static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2198{
2199 uint32_t *p;
2200 int status = 0;
2201
2202 *res = 0;
2203 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2204 return -EIO;
2205 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2206 READ_BUF(8);
2207 READ64(*res);
2208 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2209 }
2210 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2211 return status;
2212}
2213
2214static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2215{
2216 uint32_t *p;
2217 int status = 0;
2218
2219 *maxlink = 1;
2220 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2221 return -EIO;
2222 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2223 READ_BUF(4);
2224 READ32(*maxlink);
2225 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2226 }
2227 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2228 return status;
2229}
2230
2231static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2232{
2233 uint32_t *p;
2234 int status = 0;
2235
2236 *maxname = 1024;
2237 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2238 return -EIO;
2239 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2240 READ_BUF(4);
2241 READ32(*maxname);
2242 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2243 }
2244 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2245 return status;
2246}
2247
2248static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2249{
2250 uint32_t *p;
2251 int status = 0;
2252
2253 *res = 1024;
2254 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2255 return -EIO;
2256 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2257 uint64_t maxread;
2258 READ_BUF(8);
2259 READ64(maxread);
2260 if (maxread > 0x7FFFFFFF)
2261 maxread = 0x7FFFFFFF;
2262 *res = (uint32_t)maxread;
2263 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2264 }
2265 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2266 return status;
2267}
2268
2269static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2270{
2271 uint32_t *p;
2272 int status = 0;
2273
2274 *res = 1024;
2275 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2276 return -EIO;
2277 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2278 uint64_t maxwrite;
2279 READ_BUF(8);
2280 READ64(maxwrite);
2281 if (maxwrite > 0x7FFFFFFF)
2282 maxwrite = 0x7FFFFFFF;
2283 *res = (uint32_t)maxwrite;
2284 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2285 }
2286 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2287 return status;
2288}
2289
2290static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2291{
2292 uint32_t *p;
2293
2294 *mode = 0;
2295 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2296 return -EIO;
2297 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2298 READ_BUF(4);
2299 READ32(*mode);
2300 *mode &= ~S_IFMT;
2301 bitmap[1] &= ~FATTR4_WORD1_MODE;
2302 }
2303 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2304 return 0;
2305}
2306
2307static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2308{
2309 uint32_t *p;
2310
2311 *nlink = 1;
2312 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2313 return -EIO;
2314 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2315 READ_BUF(4);
2316 READ32(*nlink);
2317 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2318 }
2319 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2320 return 0;
2321}
2322
2323static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2324{
2325 uint32_t len, *p;
2326
2327 *uid = -2;
2328 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2329 return -EIO;
2330 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2331 READ_BUF(4);
2332 READ32(len);
2333 READ_BUF(len);
2334 if (len < XDR_MAX_NETOBJ) {
2335 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2336 dprintk("%s: nfs_map_name_to_uid failed!\n",
2337 __FUNCTION__);
2338 } else
2339 printk(KERN_WARNING "%s: name too long (%u)!\n",
2340 __FUNCTION__, len);
2341 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2342 }
2343 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2344 return 0;
2345}
2346
2347static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2348{
2349 uint32_t len, *p;
2350
2351 *gid = -2;
2352 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2353 return -EIO;
2354 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2355 READ_BUF(4);
2356 READ32(len);
2357 READ_BUF(len);
2358 if (len < XDR_MAX_NETOBJ) {
2359 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2360 dprintk("%s: nfs_map_group_to_gid failed!\n",
2361 __FUNCTION__);
2362 } else
2363 printk(KERN_WARNING "%s: name too long (%u)!\n",
2364 __FUNCTION__, len);
2365 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2366 }
2367 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2368 return 0;
2369}
2370
2371static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2372{
2373 uint32_t major = 0, minor = 0, *p;
2374
2375 *rdev = MKDEV(0,0);
2376 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2377 return -EIO;
2378 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2379 dev_t tmp;
2380
2381 READ_BUF(8);
2382 READ32(major);
2383 READ32(minor);
2384 tmp = MKDEV(major, minor);
2385 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2386 *rdev = tmp;
2387 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2388 }
2389 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2390 return 0;
2391}
2392
2393static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2394{
2395 uint32_t *p;
2396 int status = 0;
2397
2398 *res = 0;
2399 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2400 return -EIO;
2401 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2402 READ_BUF(8);
2403 READ64(*res);
2404 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2405 }
2406 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2407 return status;
2408}
2409
2410static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2411{
2412 uint32_t *p;
2413 int status = 0;
2414
2415 *res = 0;
2416 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2417 return -EIO;
2418 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2419 READ_BUF(8);
2420 READ64(*res);
2421 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2422 }
2423 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2424 return status;
2425}
2426
2427static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2428{
2429 uint32_t *p;
2430 int status = 0;
2431
2432 *res = 0;
2433 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2434 return -EIO;
2435 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2436 READ_BUF(8);
2437 READ64(*res);
2438 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2439 }
2440 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2441 return status;
2442}
2443
2444static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2445{
2446 uint32_t *p;
2447
2448 *used = 0;
2449 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2450 return -EIO;
2451 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2452 READ_BUF(8);
2453 READ64(*used);
2454 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2455 }
2456 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2457 (unsigned long long)*used);
2458 return 0;
2459}
2460
2461static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2462{
2463 uint32_t *p;
2464 uint64_t sec;
2465 uint32_t nsec;
2466
2467 READ_BUF(12);
2468 READ64(sec);
2469 READ32(nsec);
2470 time->tv_sec = (time_t)sec;
2471 time->tv_nsec = (long)nsec;
2472 return 0;
2473}
2474
2475static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2476{
2477 int status = 0;
2478
2479 time->tv_sec = 0;
2480 time->tv_nsec = 0;
2481 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2482 return -EIO;
2483 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2484 status = decode_attr_time(xdr, time);
2485 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2486 }
2487 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2488 return status;
2489}
2490
2491static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2492{
2493 int status = 0;
2494
2495 time->tv_sec = 0;
2496 time->tv_nsec = 0;
2497 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2498 return -EIO;
2499 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2500 status = decode_attr_time(xdr, time);
2501 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2502 }
2503 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2504 return status;
2505}
2506
2507static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2508{
2509 int status = 0;
2510
2511 time->tv_sec = 0;
2512 time->tv_nsec = 0;
2513 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2514 return -EIO;
2515 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2516 status = decode_attr_time(xdr, time);
2517 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2518 }
2519 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2520 return status;
2521}
2522
2523static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2524{
2525 unsigned int attrwords = XDR_QUADLEN(attrlen);
2526 unsigned int nwords = xdr->p - savep;
2527
2528 if (unlikely(attrwords != nwords)) {
2529 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2530 __FUNCTION__,
2531 attrwords << 2,
2532 (attrwords < nwords) ? '<' : '>',
2533 nwords << 2);
2534 return -EIO;
2535 }
2536 return 0;
2537}
2538
2539static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2540{
2541 uint32_t *p;
2542
2543 READ_BUF(20);
2544 READ32(cinfo->atomic);
2545 READ64(cinfo->before);
2546 READ64(cinfo->after);
2547 return 0;
2548}
2549
2550static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2551{
2552 uint32_t *p;
2553 uint32_t supp, acc;
2554 int status;
2555
2556 status = decode_op_hdr(xdr, OP_ACCESS);
2557 if (status)
2558 return status;
2559 READ_BUF(8);
2560 READ32(supp);
2561 READ32(acc);
2562 access->supported = supp;
2563 access->access = acc;
2564 return 0;
2565}
2566
2567static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2568{
2569 uint32_t *p;
2570 int status;
2571
2572 status = decode_op_hdr(xdr, OP_CLOSE);
2573 if (status)
2574 return status;
2575 READ_BUF(sizeof(res->stateid.data));
2576 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2577 return 0;
2578}
2579
2580static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2581{
2582 uint32_t *p;
2583 int status;
2584
2585 status = decode_op_hdr(xdr, OP_COMMIT);
2586 if (status)
2587 return status;
2588 READ_BUF(8);
2589 COPYMEM(res->verf->verifier, 8);
2590 return 0;
2591}
2592
2593static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2594{
2595 uint32_t *p;
2596 uint32_t bmlen;
2597 int status;
2598
2599 status = decode_op_hdr(xdr, OP_CREATE);
2600 if (status)
2601 return status;
2602 if ((status = decode_change_info(xdr, cinfo)))
2603 return status;
2604 READ_BUF(4);
2605 READ32(bmlen);
2606 READ_BUF(bmlen << 2);
2607 return 0;
2608}
2609
2610static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2611{
2612 uint32_t *savep;
2613 uint32_t attrlen,
2614 bitmap[2] = {0};
2615 int status;
2616
2617 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2618 goto xdr_error;
2619 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2620 goto xdr_error;
2621 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2622 goto xdr_error;
2623 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2624 goto xdr_error;
2625 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2626 goto xdr_error;
2627 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2628 goto xdr_error;
2629 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2630 goto xdr_error;
2631 status = verify_attr_len(xdr, savep, attrlen);
2632xdr_error:
2633 if (status != 0)
2634 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2635 return status;
2636}
2637
2638static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2639{
2640 uint32_t *savep;
2641 uint32_t attrlen,
2642 bitmap[2] = {0};
2643 int status;
2644
2645 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2646 goto xdr_error;
2647 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2648 goto xdr_error;
2649 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2650 goto xdr_error;
2651
2652 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2653 goto xdr_error;
2654 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2655 goto xdr_error;
2656 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2657 goto xdr_error;
2658 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2659 goto xdr_error;
2660 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2661 goto xdr_error;
2662 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2663 goto xdr_error;
2664
2665 status = verify_attr_len(xdr, savep, attrlen);
2666xdr_error:
2667 if (status != 0)
2668 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2669 return status;
2670}
2671
2672static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2673{
2674 uint32_t *savep;
2675 uint32_t attrlen,
2676 bitmap[2] = {0};
2677 int status;
2678
2679 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2680 goto xdr_error;
2681 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2682 goto xdr_error;
2683 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2684 goto xdr_error;
2685
2686 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2687 goto xdr_error;
2688 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2689 goto xdr_error;
2690
2691 status = verify_attr_len(xdr, savep, attrlen);
2692xdr_error:
2693 if (status != 0)
2694 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2695 return status;
2696}
2697
2698static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2699{
2700 uint32_t *savep;
2701 uint32_t attrlen,
2702 bitmap[2] = {0},
2703 type;
2704 int status, fmode = 0;
2705
2706 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2707 goto xdr_error;
2708 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2709 goto xdr_error;
2710
2711 fattr->bitmap[0] = bitmap[0];
2712 fattr->bitmap[1] = bitmap[1];
2713
2714 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2715 goto xdr_error;
2716
2717
2718 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2719 goto xdr_error;
2720 fattr->type = nfs_type2fmt[type].nfs2type;
2721 fmode = nfs_type2fmt[type].mode;
2722
2723 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2724 goto xdr_error;
2725 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2726 goto xdr_error;
2727 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2728 goto xdr_error;
2729 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2730 goto xdr_error;
2731 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2732 goto xdr_error;
2733 fattr->mode |= fmode;
2734 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2735 goto xdr_error;
2736 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2737 goto xdr_error;
2738 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2739 goto xdr_error;
2740 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2741 goto xdr_error;
2742 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2743 goto xdr_error;
2744 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2745 goto xdr_error;
2746 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2747 goto xdr_error;
2748 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2749 goto xdr_error;
2750 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) {
2751 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
2752 fattr->timestamp = jiffies;
2753 }
2754xdr_error:
2755 if (status != 0)
2756 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2757 return status;
2758}
2759
2760
2761static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2762{
2763 uint32_t *savep;
2764 uint32_t attrlen, bitmap[2];
2765 int status;
2766
2767 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2768 goto xdr_error;
2769 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2770 goto xdr_error;
2771 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2772 goto xdr_error;
2773
2774 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2775
2776 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2777 goto xdr_error;
2778 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2779 goto xdr_error;
2780 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2781 goto xdr_error;
2782 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2783 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2784 goto xdr_error;
2785 fsinfo->wtpref = fsinfo->wtmax;
2786
2787 status = verify_attr_len(xdr, savep, attrlen);
2788xdr_error:
2789 if (status != 0)
2790 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2791 return status;
2792}
2793
2794static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2795{
2796 uint32_t *p;
2797 uint32_t len;
2798 int status;
2799
2800 status = decode_op_hdr(xdr, OP_GETFH);
2801 if (status)
2802 return status;
2803 /* Zero handle first to allow comparisons */
2804 memset(fh, 0, sizeof(*fh));
2805
2806 READ_BUF(4);
2807 READ32(len);
2808 if (len > NFS4_FHSIZE)
2809 return -EIO;
2810 fh->size = len;
2811 READ_BUF(len);
2812 COPYMEM(fh->data, len);
2813 return 0;
2814}
2815
2816static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2817{
2818 int status;
2819
2820 status = decode_op_hdr(xdr, OP_LINK);
2821 if (status)
2822 return status;
2823 return decode_change_info(xdr, cinfo);
2824}
2825
2826/*
2827 * We create the owner, so we know a proper owner.id length is 4.
2828 */
2829static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2830{
2831 uint32_t *p;
2832 uint32_t namelen;
2833
2834 READ_BUF(32);
2835 READ64(denied->offset);
2836 READ64(denied->length);
2837 READ32(denied->type);
2838 READ64(denied->owner.clientid);
2839 READ32(namelen);
2840 READ_BUF(namelen);
2841 if (namelen == 4)
2842 READ32(denied->owner.id);
2843 return -NFS4ERR_DENIED;
2844}
2845
2846static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2847{
2848 uint32_t *p;
2849 int status;
2850
2851 status = decode_op_hdr(xdr, OP_LOCK);
2852 if (status == 0) {
2853 READ_BUF(sizeof(nfs4_stateid));
2854 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2855 } else if (status == -NFS4ERR_DENIED)
2856 return decode_lock_denied(xdr, &res->u.denied);
2857 return status;
2858}
2859
2860static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2861{
2862 int status;
2863 status = decode_op_hdr(xdr, OP_LOCKT);
2864 if (status == -NFS4ERR_DENIED)
2865 return decode_lock_denied(xdr, &res->u.denied);
2866 return status;
2867}
2868
2869static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2870{
2871 uint32_t *p;
2872 int status;
2873
2874 status = decode_op_hdr(xdr, OP_LOCKU);
2875 if (status == 0) {
2876 READ_BUF(sizeof(nfs4_stateid));
2877 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2878 }
2879 return status;
2880}
2881
2882static int decode_lookup(struct xdr_stream *xdr)
2883{
2884 return decode_op_hdr(xdr, OP_LOOKUP);
2885}
2886
2887/* This is too sick! */
2888static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2889{
2890 uint32_t *p;
2891 uint32_t limit_type, nblocks, blocksize;
2892
2893 READ_BUF(12);
2894 READ32(limit_type);
2895 switch (limit_type) {
2896 case 1:
2897 READ64(*maxsize);
2898 break;
2899 case 2:
2900 READ32(nblocks);
2901 READ32(blocksize);
2902 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
2903 }
2904 return 0;
2905}
2906
2907static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
2908{
2909 uint32_t *p;
2910 uint32_t delegation_type;
2911
2912 READ_BUF(4);
2913 READ32(delegation_type);
2914 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
2915 res->delegation_type = 0;
2916 return 0;
2917 }
2918 READ_BUF(20);
2919 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
2920 READ32(res->do_recall);
2921 switch (delegation_type) {
2922 case NFS4_OPEN_DELEGATE_READ:
2923 res->delegation_type = FMODE_READ;
2924 break;
2925 case NFS4_OPEN_DELEGATE_WRITE:
2926 res->delegation_type = FMODE_WRITE|FMODE_READ;
2927 if (decode_space_limit(xdr, &res->maxsize) < 0)
2928 return -EIO;
2929 }
2930 return decode_ace(xdr, NULL, res->server->nfs4_state);
2931}
2932
2933static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
2934{
2935 uint32_t *p;
2936 uint32_t bmlen;
2937 int status;
2938
2939 status = decode_op_hdr(xdr, OP_OPEN);
2940 if (status)
2941 return status;
2942 READ_BUF(sizeof(res->stateid.data));
2943 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2944
2945 decode_change_info(xdr, &res->cinfo);
2946
2947 READ_BUF(8);
2948 READ32(res->rflags);
2949 READ32(bmlen);
2950 if (bmlen > 10)
2951 goto xdr_error;
2952
2953 READ_BUF(bmlen << 2);
2954 p += bmlen;
2955 return decode_delegation(xdr, res);
2956xdr_error:
2957 printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
2958 return -EIO;
2959}
2960
2961static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
2962{
2963 uint32_t *p;
2964 int status;
2965
2966 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
2967 if (status)
2968 return status;
2969 READ_BUF(sizeof(res->stateid.data));
2970 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2971 return 0;
2972}
2973
2974static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
2975{
2976 uint32_t *p;
2977 int status;
2978
2979 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
2980 if (status)
2981 return status;
2982 READ_BUF(sizeof(res->stateid.data));
2983 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2984 return 0;
2985}
2986
2987static int decode_putfh(struct xdr_stream *xdr)
2988{
2989 return decode_op_hdr(xdr, OP_PUTFH);
2990}
2991
2992static int decode_putrootfh(struct xdr_stream *xdr)
2993{
2994 return decode_op_hdr(xdr, OP_PUTROOTFH);
2995}
2996
2997static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
2998{
2999 struct kvec *iov = req->rq_rcv_buf.head;
3000 uint32_t *p;
3001 uint32_t count, eof, recvd, hdrlen;
3002 int status;
3003
3004 status = decode_op_hdr(xdr, OP_READ);
3005 if (status)
3006 return status;
3007 READ_BUF(8);
3008 READ32(eof);
3009 READ32(count);
3010 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3011 recvd = req->rq_rcv_buf.len - hdrlen;
3012 if (count > recvd) {
3013 printk(KERN_WARNING "NFS: server cheating in read reply: "
3014 "count %u > recvd %u\n", count, recvd);
3015 count = recvd;
3016 eof = 0;
3017 }
3018 xdr_read_pages(xdr, count);
3019 res->eof = eof;
3020 res->count = count;
3021 return 0;
3022}
3023
3024static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3025{
3026 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3027 struct page *page = *rcvbuf->pages;
3028 struct kvec *iov = rcvbuf->head;
3029 unsigned int nr, pglen = rcvbuf->page_len;
3030 uint32_t *end, *entry, *p, *kaddr;
3031 uint32_t len, attrlen;
3032 int hdrlen, recvd, status;
3033
3034 status = decode_op_hdr(xdr, OP_READDIR);
3035 if (status)
3036 return status;
3037 READ_BUF(8);
3038 COPYMEM(readdir->verifier.data, 8);
3039
3040 hdrlen = (char *) p - (char *) iov->iov_base;
3041 recvd = rcvbuf->len - hdrlen;
3042 if (pglen > recvd)
3043 pglen = recvd;
3044 xdr_read_pages(xdr, pglen);
3045
3046 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3047 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3048 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3049 entry = p;
3050 for (nr = 0; *p++; nr++) {
3051 if (p + 3 > end)
3052 goto short_pkt;
3053 p += 2; /* cookie */
3054 len = ntohl(*p++); /* filename length */
3055 if (len > NFS4_MAXNAMLEN) {
3056 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3057 goto err_unmap;
3058 }
3059 p += XDR_QUADLEN(len);
3060 if (p + 1 > end)
3061 goto short_pkt;
3062 len = ntohl(*p++); /* bitmap length */
3063 p += len;
3064 if (p + 1 > end)
3065 goto short_pkt;
3066 attrlen = XDR_QUADLEN(ntohl(*p++));
3067 p += attrlen; /* attributes */
3068 if (p + 2 > end)
3069 goto short_pkt;
3070 entry = p;
3071 }
3072 if (!nr && (entry[0] != 0 || entry[1] == 0))
3073 goto short_pkt;
3074out:
3075 kunmap_atomic(kaddr, KM_USER0);
3076 return 0;
3077short_pkt:
3078 entry[0] = entry[1] = 0;
3079 /* truncate listing ? */
3080 if (!nr) {
3081 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3082 entry[1] = 1;
3083 }
3084 goto out;
3085err_unmap:
3086 kunmap_atomic(kaddr, KM_USER0);
3087 return -errno_NFSERR_IO;
3088}
3089
3090static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3091{
3092 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3093 struct kvec *iov = rcvbuf->head;
3094 int hdrlen, len, recvd;
3095 uint32_t *p;
3096 char *kaddr;
3097 int status;
3098
3099 status = decode_op_hdr(xdr, OP_READLINK);
3100 if (status)
3101 return status;
3102
3103 /* Convert length of symlink */
3104 READ_BUF(4);
3105 READ32(len);
3106 if (len >= rcvbuf->page_len || len <= 0) {
3107 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3108 return -ENAMETOOLONG;
3109 }
3110 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3111 recvd = req->rq_rcv_buf.len - hdrlen;
3112 if (recvd < len) {
3113 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3114 "count %u > recvd %u\n", len, recvd);
3115 return -EIO;
3116 }
3117 xdr_read_pages(xdr, len);
3118 /*
3119 * The XDR encode routine has set things up so that
3120 * the link text will be copied directly into the
3121 * buffer. We just have to do overflow-checking,
3122 * and and null-terminate the text (the VFS expects
3123 * null-termination).
3124 */
3125 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3126 kaddr[len+rcvbuf->page_base] = '\0';
3127 kunmap_atomic(kaddr, KM_USER0);
3128 return 0;
3129}
3130
3131static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3132{
3133 int status;
3134
3135 status = decode_op_hdr(xdr, OP_REMOVE);
3136 if (status)
3137 goto out;
3138 status = decode_change_info(xdr, cinfo);
3139out:
3140 return status;
3141}
3142
3143static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3144 struct nfs4_change_info *new_cinfo)
3145{
3146 int status;
3147
3148 status = decode_op_hdr(xdr, OP_RENAME);
3149 if (status)
3150 goto out;
3151 if ((status = decode_change_info(xdr, old_cinfo)))
3152 goto out;
3153 status = decode_change_info(xdr, new_cinfo);
3154out:
3155 return status;
3156}
3157
3158static int decode_renew(struct xdr_stream *xdr)
3159{
3160 return decode_op_hdr(xdr, OP_RENEW);
3161}
3162
029d105e
BF		 3163static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3164 size_t *acl_len)
3165{
3166 uint32_t *savep;
3167 uint32_t attrlen,
3168 bitmap[2] = {0};
3169 struct kvec *iov = req->rq_rcv_buf.head;
3170 int status;
3171
3172 *acl_len = 0;
3173 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3174 goto out;
3175 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3176 goto out;
3177 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3178 goto out;
3179
3180 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3181 return -EIO;
3182 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3183 int hdrlen, recvd;
3184
3185 /* We ignore &savep and don't do consistency checks on
3186 * the attr length. Let userspace figure it out.... */
3187 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3188 recvd = req->rq_rcv_buf.len - hdrlen;
3189 if (attrlen > recvd) {
3190 printk(KERN_WARNING "NFS: server cheating in getattr"
3191 " acl reply: attrlen %u > recvd %u\n",
3192 attrlen, recvd);
3193 return -EINVAL;
3194 }
3195 if (attrlen <= *acl_len)
3196 xdr_read_pages(xdr, attrlen);
3197 *acl_len = attrlen;
3198 }
3199
3200out:
3201 return status;
3202}
3203
1da177e4
LT		 3204static int
3205decode_savefh(struct xdr_stream *xdr)
3206{
3207 return decode_op_hdr(xdr, OP_SAVEFH);
3208}
3209
3210static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3211{
3212 uint32_t *p;
3213 uint32_t bmlen;
3214 int status;
3215
3216
3217 status = decode_op_hdr(xdr, OP_SETATTR);
3218 if (status)
3219 return status;
3220 READ_BUF(4);
3221 READ32(bmlen);
3222 READ_BUF(bmlen << 2);
3223 return 0;
3224}
3225
3226static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3227{
3228 uint32_t *p;
3229 uint32_t opnum;
3230 int32_t nfserr;
3231
3232 READ_BUF(8);
3233 READ32(opnum);
3234 if (opnum != OP_SETCLIENTID) {
3235 printk(KERN_NOTICE
3236 "nfs4_decode_setclientid: Server returned operation"
3237 " %d\n", opnum);
3238 return -EIO;
3239 }
3240 READ32(nfserr);
3241 if (nfserr == NFS_OK) {
3242 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3243 READ64(clp->cl_clientid);
3244 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3245 } else if (nfserr == NFSERR_CLID_INUSE) {
3246 uint32_t len;
3247
3248 /* skip netid string */
3249 READ_BUF(4);
3250 READ32(len);
3251 READ_BUF(len);
3252
3253 /* skip uaddr string */
3254 READ_BUF(4);
3255 READ32(len);
3256 READ_BUF(len);
3257 return -NFSERR_CLID_INUSE;
3258 } else
3259 return -nfs_stat_to_errno(nfserr);
3260
3261 return 0;
3262}
3263
3264static int decode_setclientid_confirm(struct xdr_stream *xdr)
3265{
3266 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3267}
3268
3269static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3270{
3271 uint32_t *p;
3272 int status;
3273
3274 status = decode_op_hdr(xdr, OP_WRITE);
3275 if (status)
3276 return status;
3277
3278 READ_BUF(16);
3279 READ32(res->count);
3280 READ32(res->verf->committed);
3281 COPYMEM(res->verf->verifier, 8);
3282 return 0;
3283}
3284
3285static int decode_delegreturn(struct xdr_stream *xdr)
3286{
3287 return decode_op_hdr(xdr, OP_DELEGRETURN);
3288}
3289
3290/*
3291 * Decode OPEN_DOWNGRADE response
3292 */
3293static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3294{
3295 struct xdr_stream xdr;
3296 struct compound_hdr hdr;
3297 int status;
3298
3299 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3300 status = decode_compound_hdr(&xdr, &hdr);
3301 if (status)
3302 goto out;
3303 status = decode_putfh(&xdr);
3304 if (status)
3305 goto out;
3306 status = decode_open_downgrade(&xdr, res);
3307out:
3308 return status;
3309}
3310
3311/*
3312 * END OF "GENERIC" DECODE ROUTINES.
3313 */
3314
3315/*
3316 * Decode ACCESS response
3317 */
3318static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3319{
3320 struct xdr_stream xdr;
3321 struct compound_hdr hdr;
3322 int status;
3323
3324 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3325 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3326 goto out;
3327 if ((status = decode_putfh(&xdr)) == 0)
3328 status = decode_access(&xdr, res);
3329out:
3330 return status;
3331}
3332
3333/*
3334 * Decode LOOKUP response
3335 */
3336static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3337{
3338 struct xdr_stream xdr;
3339 struct compound_hdr hdr;
3340 int status;
3341
3342 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3343 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3344 goto out;
3345 if ((status = decode_putfh(&xdr)) != 0)
3346 goto out;
3347 if ((status = decode_lookup(&xdr)) != 0)
3348 goto out;
3349 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3350 goto out;
3351 status = decode_getfattr(&xdr, res->fattr, res->server);
3352out:
3353 return status;
3354}
3355
3356/*
3357 * Decode LOOKUP_ROOT response
3358 */
3359static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3360{
3361 struct xdr_stream xdr;
3362 struct compound_hdr hdr;
3363 int status;
3364
3365 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3366 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3367 goto out;
3368 if ((status = decode_putrootfh(&xdr)) != 0)
3369 goto out;
3370 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3371 status = decode_getfattr(&xdr, res->fattr, res->server);
3372out:
3373 return status;
3374}
3375
3376/*
3377 * Decode REMOVE response
3378 */
3379static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3380{
3381 struct xdr_stream xdr;
3382 struct compound_hdr hdr;
3383 int status;
3384
3385 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3386 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3387 goto out;
3388 if ((status = decode_putfh(&xdr)) == 0)
3389 status = decode_remove(&xdr, cinfo);
3390out:
3391 return status;
3392}
3393
3394/*
3395 * Decode RENAME response
3396 */
3397static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3398{
3399 struct xdr_stream xdr;
3400 struct compound_hdr hdr;
3401 int status;
3402
3403 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3404 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3405 goto out;
3406 if ((status = decode_putfh(&xdr)) != 0)
3407 goto out;
3408 if ((status = decode_savefh(&xdr)) != 0)
3409 goto out;
3410 if ((status = decode_putfh(&xdr)) != 0)
3411 goto out;
3412 status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3413out:
3414 return status;
3415}
3416
3417/*
3418 * Decode LINK response
3419 */
3420static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3421{
3422 struct xdr_stream xdr;
3423 struct compound_hdr hdr;
3424 int status;
3425
3426 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3427 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3428 goto out;
3429 if ((status = decode_putfh(&xdr)) != 0)
3430 goto out;
3431 if ((status = decode_savefh(&xdr)) != 0)
3432 goto out;
3433 if ((status = decode_putfh(&xdr)) != 0)
3434 goto out;
3435 status = decode_link(&xdr, cinfo);
3436out:
3437 return status;
3438}
3439
3440/*
3441 * Decode CREATE response
3442 */
3443static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3444{
3445 struct xdr_stream xdr;
3446 struct compound_hdr hdr;
3447 int status;
3448
3449 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3450 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3451 goto out;
3452 if ((status = decode_putfh(&xdr)) != 0)
3453 goto out;
3454 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3455 goto out;
3456 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3457 goto out;
3458 status = decode_getfattr(&xdr, res->fattr, res->server);
3459 if (status == NFS4ERR_DELAY)
3460 status = 0;
3461out:
3462 return status;
3463}
3464
3465/*
3466 * Decode SYMLINK response
3467 */
3468static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3469{
3470 return nfs4_xdr_dec_create(rqstp, p, res);
3471}
3472
3473/*
3474 * Decode GETATTR response
3475 */
3476static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3477{
3478 struct xdr_stream xdr;
3479 struct compound_hdr hdr;
3480 int status;
3481
3482 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3483 status = decode_compound_hdr(&xdr, &hdr);
3484 if (status)
3485 goto out;
3486 status = decode_putfh(&xdr);
3487 if (status)
3488 goto out;
3489 status = decode_getfattr(&xdr, res->fattr, res->server);
3490out:
3491 return status;
3492
3493}
3494
3495
029d105e
BF		 3496/*
3497 * Decode GETACL response
3498 */
3499static int
3500nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3501{
3502 struct xdr_stream xdr;
3503 struct compound_hdr hdr;
3504 int status;
3505
3506 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3507 status = decode_compound_hdr(&xdr, &hdr);
3508 if (status)
3509 goto out;
3510 status = decode_putfh(&xdr);
3511 if (status)
3512 goto out;
3513 status = decode_getacl(&xdr, rqstp, acl_len);
3514
3515out:
3516 return status;
3517}
3518
1da177e4
LT		 3519/*
3520 * Decode CLOSE response
3521 */
3522static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3523{
3524 struct xdr_stream xdr;
3525 struct compound_hdr hdr;
3526 int status;
3527
3528 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3529 status = decode_compound_hdr(&xdr, &hdr);
3530 if (status)
3531 goto out;
3532 status = decode_putfh(&xdr);
3533 if (status)
3534 goto out;
3535 status = decode_close(&xdr, res);
3536out:
3537 return status;
3538}
3539
3540/*
3541 * Decode OPEN response
3542 */
3543static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3544{
3545 struct xdr_stream xdr;
3546 struct compound_hdr hdr;
3547 int status;
3548
3549 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3550 status = decode_compound_hdr(&xdr, &hdr);
3551 if (status)
3552 goto out;
3553 status = decode_putfh(&xdr);
3554 if (status)
3555 goto out;
3556 status = decode_open(&xdr, res);
3557 if (status)
3558 goto out;
3559 status = decode_getfh(&xdr, &res->fh);
3560 if (status)
3561 goto out;
3562 status = decode_getfattr(&xdr, res->f_attr, res->server);
3563 if (status == NFS4ERR_DELAY)
3564 status = 0;
3565out:
3566 return status;
3567}
3568
3569/*
3570 * Decode OPEN_CONFIRM response
3571 */
3572static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3573{
3574 struct xdr_stream xdr;
3575 struct compound_hdr hdr;
3576 int status;
3577
3578 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3579 status = decode_compound_hdr(&xdr, &hdr);
3580 if (status)
3581 goto out;
3582 status = decode_putfh(&xdr);
3583 if (status)
3584 goto out;
3585 status = decode_open_confirm(&xdr, res);
3586out:
3587 return status;
3588}
3589
3590/*
3591 * Decode OPEN response
3592 */
3593static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3594{
3595 struct xdr_stream xdr;
3596 struct compound_hdr hdr;
3597 int status;
3598
3599 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3600 status = decode_compound_hdr(&xdr, &hdr);
3601 if (status)
3602 goto out;
3603 status = decode_putfh(&xdr);
3604 if (status)
3605 goto out;
3606 status = decode_open(&xdr, res);
3607out:
3608 return status;
3609}
3610
3611/*
3612 * Decode SETATTR response
3613 */
3614static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3615{
3616 struct xdr_stream xdr;
3617 struct compound_hdr hdr;
3618 int status;
3619
3620 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3621 status = decode_compound_hdr(&xdr, &hdr);
3622 if (status)
3623 goto out;
3624 status = decode_putfh(&xdr);
3625 if (status)
3626 goto out;
3627 status = decode_setattr(&xdr, res);
3628 if (status)
3629 goto out;
3630 status = decode_getfattr(&xdr, res->fattr, res->server);
3631 if (status == NFS4ERR_DELAY)
3632 status = 0;
3633out:
3634 return status;
3635}
3636
3637/*
3638 * Decode LOCK response
3639 */
3640static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3641{
3642 struct xdr_stream xdr;
3643 struct compound_hdr hdr;
3644 int status;
3645
3646 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3647 status = decode_compound_hdr(&xdr, &hdr);
3648 if (status)
3649 goto out;
3650 status = decode_putfh(&xdr);
3651 if (status)
3652 goto out;
3653 status = decode_lock(&xdr, res);
3654out:
3655 return status;
3656}
3657
3658/*
3659 * Decode LOCKT response
3660 */
3661static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3662{
3663 struct xdr_stream xdr;
3664 struct compound_hdr hdr;
3665 int status;
3666
3667 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3668 status = decode_compound_hdr(&xdr, &hdr);
3669 if (status)
3670 goto out;
3671 status = decode_putfh(&xdr);
3672 if (status)
3673 goto out;
3674 status = decode_lockt(&xdr, res);
3675out:
3676 return status;
3677}
3678
3679/*
3680 * Decode LOCKU response
3681 */
3682static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3683{
3684 struct xdr_stream xdr;
3685 struct compound_hdr hdr;
3686 int status;
3687
3688 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3689 status = decode_compound_hdr(&xdr, &hdr);
3690 if (status)
3691 goto out;
3692 status = decode_putfh(&xdr);
3693 if (status)
3694 goto out;
3695 status = decode_locku(&xdr, res);
3696out:
3697 return status;
3698}
3699
3700/*
3701 * Decode READLINK response
3702 */
3703static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3704{
3705 struct xdr_stream xdr;
3706 struct compound_hdr hdr;
3707 int status;
3708
3709 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3710 status = decode_compound_hdr(&xdr, &hdr);
3711 if (status)
3712 goto out;
3713 status = decode_putfh(&xdr);
3714 if (status)
3715 goto out;
3716 status = decode_readlink(&xdr, rqstp);
3717out:
3718 return status;
3719}
3720
3721/*
3722 * Decode READDIR response
3723 */
3724static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3725{
3726 struct xdr_stream xdr;
3727 struct compound_hdr hdr;
3728 int status;
3729
3730 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3731 status = decode_compound_hdr(&xdr, &hdr);
3732 if (status)
3733 goto out;
3734 status = decode_putfh(&xdr);
3735 if (status)
3736 goto out;
3737 status = decode_readdir(&xdr, rqstp, res);
3738out:
3739 return status;
3740}
3741
3742/*
3743 * Decode Read response
3744 */
3745static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3746{
3747 struct xdr_stream xdr;
3748 struct compound_hdr hdr;
3749 int status;
3750
3751 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3752 status = decode_compound_hdr(&xdr, &hdr);
3753 if (status)
3754 goto out;
3755 status = decode_putfh(&xdr);
3756 if (status)
3757 goto out;
3758 status = decode_read(&xdr, rqstp, res);
3759 if (!status)
3760 status = res->count;
3761out:
3762 return status;
3763}
3764
3765/*
3766 * Decode WRITE response
3767 */
3768static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3769{
3770 struct xdr_stream xdr;
3771 struct compound_hdr hdr;
3772 int status;
3773
3774 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3775 status = decode_compound_hdr(&xdr, &hdr);
3776 if (status)
3777 goto out;
3778 status = decode_putfh(&xdr);
3779 if (status)
3780 goto out;
3781 status = decode_write(&xdr, res);
3782 if (!status)
3783 status = res->count;
3784out:
3785 return status;
3786}
3787
3788/*
3789 * Decode COMMIT response
3790 */
3791static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3792{
3793 struct xdr_stream xdr;
3794 struct compound_hdr hdr;
3795 int status;
3796
3797 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3798 status = decode_compound_hdr(&xdr, &hdr);
3799 if (status)
3800 goto out;
3801 status = decode_putfh(&xdr);
3802 if (status)
3803 goto out;
3804 status = decode_commit(&xdr, res);
3805out:
3806 return status;
3807}
3808
3809/*
3810 * FSINFO request
3811 */
3812static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3813{
3814 struct xdr_stream xdr;
3815 struct compound_hdr hdr;
3816 int status;
3817
3818 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3819 status = decode_compound_hdr(&xdr, &hdr);
3820 if (!status)
3821 status = decode_putfh(&xdr);
3822 if (!status)
3823 status = decode_fsinfo(&xdr, fsinfo);
3824 if (!status)
3825 status = -nfs_stat_to_errno(hdr.status);
3826 return status;
3827}
3828
3829/*
3830 * PATHCONF request
3831 */
3832static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
3833{
3834 struct xdr_stream xdr;
3835 struct compound_hdr hdr;
3836 int status;
3837
3838 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3839 status = decode_compound_hdr(&xdr, &hdr);
3840 if (!status)
3841 status = decode_putfh(&xdr);
3842 if (!status)
3843 status = decode_pathconf(&xdr, pathconf);
3844 return status;
3845}
3846
3847/*
3848 * STATFS request
3849 */
3850static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
3851{
3852 struct xdr_stream xdr;
3853 struct compound_hdr hdr;
3854 int status;
3855
3856 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3857 status = decode_compound_hdr(&xdr, &hdr);
3858 if (!status)
3859 status = decode_putfh(&xdr);
3860 if (!status)
3861 status = decode_statfs(&xdr, fsstat);
3862 return status;
3863}
3864
3865/*
3866 * GETATTR_BITMAP request
3867 */
3868static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
3869{
3870 struct xdr_stream xdr;
3871 struct compound_hdr hdr;
3872 int status;
3873
3874 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3875 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3876 goto out;
3877 if ((status = decode_putfh(&xdr)) != 0)
3878 goto out;
3879 status = decode_server_caps(&xdr, res);
3880out:
3881 return status;
3882}
3883
3884/*
3885 * Decode RENEW response
3886 */
3887static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3888{
3889 struct xdr_stream xdr;
3890 struct compound_hdr hdr;
3891 int status;
3892
3893 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3894 status = decode_compound_hdr(&xdr, &hdr);
3895 if (!status)
3896 status = decode_renew(&xdr);
3897 return status;
3898}
3899
3900/*
3901 * a SETCLIENTID request
3902 */
3903static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
3904 struct nfs4_client *clp)
3905{
3906 struct xdr_stream xdr;
3907 struct compound_hdr hdr;
3908 int status;
3909
3910 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3911 status = decode_compound_hdr(&xdr, &hdr);
3912 if (!status)
3913 status = decode_setclientid(&xdr, clp);
3914 if (!status)
3915 status = -nfs_stat_to_errno(hdr.status);
3916 return status;
3917}
3918
3919/*
3920 * a SETCLIENTID_CONFIRM request
3921 */
3922static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3923{
3924 struct xdr_stream xdr;
3925 struct compound_hdr hdr;
3926 int status;
3927
3928 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3929 status = decode_compound_hdr(&xdr, &hdr);
3930 if (!status)
3931 status = decode_setclientid_confirm(&xdr);
3932 if (!status)
3933 status = decode_putrootfh(&xdr);
3934 if (!status)
3935 status = decode_fsinfo(&xdr, fsinfo);
3936 if (!status)
3937 status = -nfs_stat_to_errno(hdr.status);
3938 return status;
3939}
3940
3941/*
3942 * DELEGRETURN request
3943 */
3944static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3945{
3946 struct xdr_stream xdr;
3947 struct compound_hdr hdr;
3948 int status;
3949
3950 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3951 status = decode_compound_hdr(&xdr, &hdr);
3952 if (status == 0) {
3953 status = decode_putfh(&xdr);
3954 if (status == 0)
3955 status = decode_delegreturn(&xdr);
3956 }
3957 return status;
3958}
3959
3960uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
3961{
3962 uint32_t bitmap[2] = {0};
3963 uint32_t len;
3964
3965 if (!*p++) {
3966 if (!*p)
3967 return ERR_PTR(-EAGAIN);
3968 entry->eof = 1;
3969 return ERR_PTR(-EBADCOOKIE);
3970 }
3971
3972 entry->prev_cookie = entry->cookie;
3973 p = xdr_decode_hyper(p, &entry->cookie);
3974 entry->len = ntohl(*p++);
3975 entry->name = (const char *) p;
3976 p += XDR_QUADLEN(entry->len);
3977
3978 /*
3979 * In case the server doesn't return an inode number,
3980 * we fake one here. (We don't use inode number 0,
3981 * since glibc seems to choke on it...)
3982 */
3983 entry->ino = 1;
3984
3985 len = ntohl(*p++); /* bitmap length */
3986 if (len-- > 0) {
3987 bitmap[0] = ntohl(*p++);
3988 if (len-- > 0) {
3989 bitmap[1] = ntohl(*p++);
3990 p += len;
3991 }
3992 }
3993 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
3994 if (len > 0) {
3995 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
3996 xdr_decode_hyper(p, &entry->ino);
3997 else if (bitmap[0] == FATTR4_WORD0_FILEID)
3998 xdr_decode_hyper(p, &entry->ino);
3999 p += len;
4000 }
4001
4002 entry->eof = !p[0] && p[1];
4003 return p;
4004}
4005
4006/*
4007 * We need to translate between nfs status return values and
4008 * the local errno values which may not be the same.
4009 */
4010static struct {
4011 int stat;
4012 int errno;
4013} nfs_errtbl[] = {
4014 { NFS4_OK, 0 },
4015 { NFS4ERR_PERM, EPERM },
4016 { NFS4ERR_NOENT, ENOENT },
4017 { NFS4ERR_IO, errno_NFSERR_IO },
4018 { NFS4ERR_NXIO, ENXIO },
4019 { NFS4ERR_ACCESS, EACCES },
4020 { NFS4ERR_EXIST, EEXIST },
4021 { NFS4ERR_XDEV, EXDEV },
4022 { NFS4ERR_NOTDIR, ENOTDIR },
4023 { NFS4ERR_ISDIR, EISDIR },
4024 { NFS4ERR_INVAL, EINVAL },
4025 { NFS4ERR_FBIG, EFBIG },
4026 { NFS4ERR_NOSPC, ENOSPC },
4027 { NFS4ERR_ROFS, EROFS },
4028 { NFS4ERR_MLINK, EMLINK },
4029 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4030 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4031 { NFS4ERR_DQUOT, EDQUOT },
4032 { NFS4ERR_STALE, ESTALE },
4033 { NFS4ERR_BADHANDLE, EBADHANDLE },
4034 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4035 { NFS4ERR_NOTSUPP, ENOTSUPP },
4036 { NFS4ERR_TOOSMALL, ETOOSMALL },
4037 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4038 { NFS4ERR_BADTYPE, EBADTYPE },
4039 { NFS4ERR_LOCKED, EAGAIN },
4040 { NFS4ERR_RESOURCE, EREMOTEIO },
4041 { NFS4ERR_SYMLINK, ELOOP },
4042 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4043 { NFS4ERR_DEADLOCK, EDEADLK },
4044 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4045 * to be handled by a
4046 * middle-layer.
4047 */
4048 { -1, EIO }
4049};
4050
4051/*
4052 * Convert an NFS error code to a local one.
4053 * This one is used jointly by NFSv2 and NFSv3.
4054 */
4055static int
4056nfs_stat_to_errno(int stat)
4057{
4058 int i;
4059 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4060 if (nfs_errtbl[i].stat == stat)
4061 return nfs_errtbl[i].errno;
4062 }
4063 if (stat <= 10000 || stat > 10100) {
4064 /* The server is looney tunes. */
4065 return ESERVERFAULT;
4066 }
4067 /* If we cannot translate the error, the recovery routines should
4068 * handle it.
4069 * Note: remaining NFSv4 error codes have values > 10000, so should
4070 * not conflict with native Linux error codes.
4071 */
4072 return stat;
4073}
4074
4075#ifndef MAX
4076# define MAX(a, b) (((a) > (b))? (a) : (b))
4077#endif
4078
4079#define PROC(proc, argtype, restype) \
4080[NFSPROC4_CLNT_##proc] = { \
4081 .p_proc = NFSPROC4_COMPOUND, \
4082 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4083 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4084 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
4085 }
4086
4087struct rpc_procinfo nfs4_procedures[] = {
4088 PROC(READ, enc_read, dec_read),
4089 PROC(WRITE, enc_write, dec_write),
4090 PROC(COMMIT, enc_commit, dec_commit),
4091 PROC(OPEN, enc_open, dec_open),
4092 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4093 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4094 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4095 PROC(CLOSE, enc_close, dec_close),
4096 PROC(SETATTR, enc_setattr, dec_setattr),
4097 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4098 PROC(RENEW, enc_renew, dec_renew),
4099 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4100 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4101 PROC(LOCK, enc_lock, dec_lock),
4102 PROC(LOCKT, enc_lockt, dec_lockt),
4103 PROC(LOCKU, enc_locku, dec_locku),
4104 PROC(ACCESS, enc_access, dec_access),
4105 PROC(GETATTR, enc_getattr, dec_getattr),
4106 PROC(LOOKUP, enc_lookup, dec_lookup),
4107 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4108 PROC(REMOVE, enc_remove, dec_remove),
4109 PROC(RENAME, enc_rename, dec_rename),
4110 PROC(LINK, enc_link, dec_link),
4111 PROC(SYMLINK, enc_symlink, dec_symlink),
4112 PROC(CREATE, enc_create, dec_create),
4113 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4114 PROC(STATFS, enc_statfs, dec_statfs),
4115 PROC(READLINK, enc_readlink, dec_readlink),
4116 PROC(READDIR, enc_readdir, dec_readdir),
4117 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4118 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4119 PROC(GETACL, enc_getacl, dec_getacl),
1da177e4
LT		 4120};
4121
4122struct rpc_version nfs_version4 = {
4123 .number = 4,
4124 .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4125 .procs = nfs4_procedures
4126};
4127
4128/*
4129 * Local variables:
4130 * c-basic-offset: 8
4131 * End:
4132 */
Linux kernel - Deliverables
This page took 0.210572 seconds and 5 git commands to generate.