4 * Client-side XDR for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
38 #include <linux/param.h>
39 #include <linux/time.h>
41 #include <linux/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.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>
56 #define NFSDBG_FACILITY NFSDBG_XDR
58 /* Mapping from NFS error code to "errno" error code. */
59 #define errno_NFSERR_IO EIO
61 static int nfs4_stat_to_errno(int);
63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
65 #define NFS4_MAXTAGLEN 20
67 #define NFS4_MAXTAGLEN 0
70 /* lock,open owner id:
71 * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT >> 2)
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 + \
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))
86 #define nfs4_fattr_bitmap_maxsz 3
87 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
88 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
89 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
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)
96 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
97 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
98 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
99 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
100 #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
101 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
102 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
103 #define decode_renew_maxsz (op_decode_hdr_maxsz)
104 #define encode_setclientid_maxsz \
105 (op_encode_hdr_maxsz + \
106 4 /*server->ip_addr*/ + \
109 6 + (NFS4_VERIFIER_SIZE >> 2))
110 #define decode_setclientid_maxsz \
111 (op_decode_hdr_maxsz + \
113 1024) /* large value for CLID_INUSE */
114 #define encode_setclientid_confirm_maxsz \
115 (op_encode_hdr_maxsz + \
116 3 + (NFS4_VERIFIER_SIZE >> 2))
117 #define decode_setclientid_confirm_maxsz \
118 (op_decode_hdr_maxsz)
119 #define encode_lookup_maxsz (op_encode_hdr_maxsz + \
120 1 + ((3 + NFS4_FHSIZE) >> 2))
121 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
123 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
125 #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
126 #define encode_link_maxsz (op_encode_hdr_maxsz + \
128 #define decode_link_maxsz (op_decode_hdr_maxsz + 5)
129 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
130 1 + nfs4_name_maxsz + \
133 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
134 #define encode_create_maxsz (op_encode_hdr_maxsz + \
135 2 + nfs4_name_maxsz + \
137 #define decode_create_maxsz (op_decode_hdr_maxsz + 8)
138 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
139 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
140 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
141 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
142 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
143 encode_putfh_maxsz + \
144 op_encode_hdr_maxsz + 7)
145 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
146 decode_putfh_maxsz + \
147 op_decode_hdr_maxsz + 2)
148 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
149 encode_putfh_maxsz + \
151 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
152 decode_putfh_maxsz + \
154 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
155 encode_putfh_maxsz + \
156 op_encode_hdr_maxsz + 9)
157 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
158 decode_putfh_maxsz + \
159 op_decode_hdr_maxsz + 2)
160 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
161 encode_putfh_maxsz + \
162 op_encode_hdr_maxsz + 8 + \
163 encode_getattr_maxsz)
164 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
165 decode_putfh_maxsz + \
166 op_decode_hdr_maxsz + 4 + \
167 decode_getattr_maxsz)
168 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
169 encode_putfh_maxsz + \
170 op_encode_hdr_maxsz + 3 + \
171 encode_getattr_maxsz)
172 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
173 decode_putfh_maxsz + \
174 op_decode_hdr_maxsz + 2 + \
175 decode_getattr_maxsz)
176 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
177 encode_putfh_maxsz + \
178 op_encode_hdr_maxsz + \
180 encode_getattr_maxsz + \
182 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
183 decode_putfh_maxsz + \
184 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
185 decode_getattr_maxsz + \
187 #define NFS4_enc_open_confirm_sz \
188 (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
190 op_encode_hdr_maxsz + 5)
191 #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
192 decode_putfh_maxsz + \
193 op_decode_hdr_maxsz + 4)
194 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
195 encode_putfh_maxsz + \
196 op_encode_hdr_maxsz + \
198 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
199 decode_putfh_maxsz + \
200 op_decode_hdr_maxsz + \
202 #define NFS4_enc_open_downgrade_sz \
203 (compound_encode_hdr_maxsz + \
204 encode_putfh_maxsz + \
205 op_encode_hdr_maxsz + 7 + \
206 encode_getattr_maxsz)
207 #define NFS4_dec_open_downgrade_sz \
208 (compound_decode_hdr_maxsz + \
209 decode_putfh_maxsz + \
210 op_decode_hdr_maxsz + 4 + \
211 decode_getattr_maxsz)
212 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
213 encode_putfh_maxsz + \
214 op_encode_hdr_maxsz + 5 + \
215 encode_getattr_maxsz)
216 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
217 decode_putfh_maxsz + \
218 op_decode_hdr_maxsz + 4 + \
219 decode_getattr_maxsz)
220 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
221 encode_putfh_maxsz + \
222 op_encode_hdr_maxsz + 4 + \
224 encode_getattr_maxsz)
225 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
226 decode_putfh_maxsz + \
227 op_decode_hdr_maxsz + 3 + \
229 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
230 encode_putfh_maxsz + \
232 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
233 decode_putfh_maxsz + \
235 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
237 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
239 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
240 encode_setclientid_maxsz)
241 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
242 decode_setclientid_maxsz)
243 #define NFS4_enc_setclientid_confirm_sz \
244 (compound_encode_hdr_maxsz + \
245 encode_setclientid_confirm_maxsz + \
246 encode_putrootfh_maxsz + \
248 #define NFS4_dec_setclientid_confirm_sz \
249 (compound_decode_hdr_maxsz + \
250 decode_setclientid_confirm_maxsz + \
251 decode_putrootfh_maxsz + \
253 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
254 encode_putfh_maxsz + \
255 encode_getattr_maxsz + \
256 op_encode_hdr_maxsz + \
260 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
261 decode_putfh_maxsz + \
262 decode_getattr_maxsz + \
263 op_decode_hdr_maxsz + \
266 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
267 encode_putfh_maxsz + \
268 encode_getattr_maxsz + \
269 op_encode_hdr_maxsz + \
272 #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
273 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
274 encode_putfh_maxsz + \
275 encode_getattr_maxsz + \
276 op_encode_hdr_maxsz + \
278 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
279 decode_putfh_maxsz + \
280 decode_getattr_maxsz + \
281 op_decode_hdr_maxsz + 4)
282 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
283 encode_putfh_maxsz + \
284 op_encode_hdr_maxsz + 1)
285 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
286 decode_putfh_maxsz + \
287 op_decode_hdr_maxsz + 2)
288 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
289 encode_putfh_maxsz + \
290 encode_getattr_maxsz)
291 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
292 decode_putfh_maxsz + \
293 decode_getattr_maxsz)
294 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
295 encode_putfh_maxsz + \
296 encode_lookup_maxsz + \
297 encode_getattr_maxsz + \
299 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
300 decode_putfh_maxsz + \
301 op_decode_hdr_maxsz + \
302 decode_getattr_maxsz + \
304 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
305 encode_putrootfh_maxsz + \
306 encode_getattr_maxsz + \
308 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
309 decode_putrootfh_maxsz + \
310 decode_getattr_maxsz + \
312 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
313 encode_putfh_maxsz + \
314 encode_remove_maxsz + \
315 encode_getattr_maxsz)
316 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
317 decode_putfh_maxsz + \
318 op_decode_hdr_maxsz + 5 + \
319 decode_getattr_maxsz)
320 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
321 encode_putfh_maxsz + \
322 encode_savefh_maxsz + \
323 encode_putfh_maxsz + \
324 encode_rename_maxsz + \
325 encode_getattr_maxsz + \
326 encode_restorefh_maxsz + \
327 encode_getattr_maxsz)
328 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
329 decode_putfh_maxsz + \
330 decode_savefh_maxsz + \
331 decode_putfh_maxsz + \
332 decode_rename_maxsz + \
333 decode_getattr_maxsz + \
334 decode_restorefh_maxsz + \
335 decode_getattr_maxsz)
336 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
337 encode_putfh_maxsz + \
338 encode_savefh_maxsz + \
339 encode_putfh_maxsz + \
340 encode_link_maxsz + \
341 decode_getattr_maxsz + \
342 encode_restorefh_maxsz + \
343 decode_getattr_maxsz)
344 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
345 decode_putfh_maxsz + \
346 decode_savefh_maxsz + \
347 decode_putfh_maxsz + \
348 decode_link_maxsz + \
349 decode_getattr_maxsz + \
350 decode_restorefh_maxsz + \
351 decode_getattr_maxsz)
352 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
353 encode_putfh_maxsz + \
354 encode_symlink_maxsz + \
355 encode_getattr_maxsz + \
357 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
358 decode_putfh_maxsz + \
359 decode_symlink_maxsz + \
360 decode_getattr_maxsz + \
362 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
363 encode_putfh_maxsz + \
364 encode_savefh_maxsz + \
365 encode_create_maxsz + \
366 encode_getfh_maxsz + \
367 encode_getattr_maxsz + \
368 encode_restorefh_maxsz + \
369 encode_getattr_maxsz)
370 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
371 decode_putfh_maxsz + \
372 decode_savefh_maxsz + \
373 decode_create_maxsz + \
374 decode_getfh_maxsz + \
375 decode_getattr_maxsz + \
376 decode_restorefh_maxsz + \
377 decode_getattr_maxsz)
378 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
379 encode_putfh_maxsz + \
380 encode_getattr_maxsz)
381 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
382 decode_putfh_maxsz + \
383 decode_getattr_maxsz)
384 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
385 encode_putfh_maxsz + \
386 encode_getattr_maxsz)
387 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
388 decode_putfh_maxsz + \
389 op_decode_hdr_maxsz + 12)
390 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
391 encode_putfh_maxsz + \
392 encode_getattr_maxsz)
393 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
394 decode_putfh_maxsz + \
395 decode_getattr_maxsz)
396 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
397 encode_putfh_maxsz + \
398 encode_delegreturn_maxsz + \
399 encode_getattr_maxsz)
400 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
401 decode_delegreturn_maxsz + \
402 decode_getattr_maxsz)
403 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
404 encode_putfh_maxsz + \
405 encode_getattr_maxsz)
406 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
407 decode_putfh_maxsz + \
408 op_decode_hdr_maxsz + \
409 nfs4_fattr_bitmap_maxsz + 1)
410 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
411 encode_putfh_maxsz + \
412 op_encode_hdr_maxsz + 4 + \
413 nfs4_fattr_bitmap_maxsz + 1)
414 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
415 decode_putfh_maxsz + \
416 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
417 #define NFS4_enc_fs_locations_sz \
418 (compound_encode_hdr_maxsz + \
419 encode_putfh_maxsz + \
420 encode_getattr_maxsz)
421 #define NFS4_dec_fs_locations_sz \
422 (compound_decode_hdr_maxsz + \
423 decode_putfh_maxsz + \
424 op_decode_hdr_maxsz + \
425 nfs4_fattr_bitmap_maxsz)
429 unsigned int nfs2type;
437 { S_IFSOCK, NFSOCK },
443 struct compound_hdr {
451 * START OF "GENERIC" ENCODE ROUTINES.
452 * These may look a little ugly since they are imported from a "generic"
453 * set of XDR encode/decode routines which are intended to be shared by
454 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
456 * If the pain of reading these is too great, it should be a straightforward
457 * task to translate them into Linux-specific versions which are more
458 * consistent with the style used in NFSv2/v3...
460 #define WRITE32(n) *p++ = htonl(n)
461 #define WRITE64(n) do { \
462 *p++ = htonl((uint32_t)((n) >> 32)); \
463 *p++ = htonl((uint32_t)(n)); \
465 #define WRITEMEM(ptr,nbytes) do { \
466 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
469 #define RESERVE_SPACE(nbytes) do { \
470 p = xdr_reserve_space(xdr, nbytes); \
471 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
475 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
479 p = xdr_reserve_space(xdr, 4 + len);
481 xdr_encode_opaque(p, str, len);
484 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
488 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
489 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
490 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
491 WRITE32(hdr->taglen);
492 WRITEMEM(hdr->tag, hdr->taglen);
493 WRITE32(NFS4_MINOR_VERSION);
498 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
502 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
504 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
507 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
509 char owner_name[IDMAP_NAMESZ];
510 char owner_group[IDMAP_NAMESZ];
511 int owner_namelen = 0;
512 int owner_grouplen = 0;
521 * We reserve enough space to write the entire attribute buffer at once.
522 * In the worst-case, this would be
523 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
524 * = 36 bytes, plus any contribution from variable-length fields
525 * such as owner/group.
530 if (iap->ia_valid & ATTR_SIZE)
532 if (iap->ia_valid & ATTR_MODE)
534 if (iap->ia_valid & ATTR_UID) {
535 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
536 if (owner_namelen < 0) {
537 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
540 strcpy(owner_name, "nobody");
541 owner_namelen = sizeof("nobody") - 1;
544 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
546 if (iap->ia_valid & ATTR_GID) {
547 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
548 if (owner_grouplen < 0) {
549 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
551 strcpy(owner_group, "nobody");
552 owner_grouplen = sizeof("nobody") - 1;
555 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
557 if (iap->ia_valid & ATTR_ATIME_SET)
559 else if (iap->ia_valid & ATTR_ATIME)
561 if (iap->ia_valid & ATTR_MTIME_SET)
563 else if (iap->ia_valid & ATTR_MTIME)
568 * We write the bitmap length now, but leave the bitmap and the attribute
569 * buffer length to be backfilled at the end of this routine.
575 if (iap->ia_valid & ATTR_SIZE) {
576 bmval0 |= FATTR4_WORD0_SIZE;
577 WRITE64(iap->ia_size);
579 if (iap->ia_valid & ATTR_MODE) {
580 bmval1 |= FATTR4_WORD1_MODE;
581 WRITE32(iap->ia_mode & S_IALLUGO);
583 if (iap->ia_valid & ATTR_UID) {
584 bmval1 |= FATTR4_WORD1_OWNER;
585 WRITE32(owner_namelen);
586 WRITEMEM(owner_name, owner_namelen);
588 if (iap->ia_valid & ATTR_GID) {
589 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
590 WRITE32(owner_grouplen);
591 WRITEMEM(owner_group, owner_grouplen);
593 if (iap->ia_valid & ATTR_ATIME_SET) {
594 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
595 WRITE32(NFS4_SET_TO_CLIENT_TIME);
597 WRITE32(iap->ia_mtime.tv_sec);
598 WRITE32(iap->ia_mtime.tv_nsec);
600 else if (iap->ia_valid & ATTR_ATIME) {
601 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
602 WRITE32(NFS4_SET_TO_SERVER_TIME);
604 if (iap->ia_valid & ATTR_MTIME_SET) {
605 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
606 WRITE32(NFS4_SET_TO_CLIENT_TIME);
608 WRITE32(iap->ia_mtime.tv_sec);
609 WRITE32(iap->ia_mtime.tv_nsec);
611 else if (iap->ia_valid & ATTR_MTIME) {
612 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
613 WRITE32(NFS4_SET_TO_SERVER_TIME);
617 * Now we backfill the bitmap and the attribute buffer length.
619 if (len != ((char *)p - (char *)q) + 4) {
620 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
621 len, ((char *)p - (char *)q) + 4);
624 len = (char *)p - (char *)q - 12;
625 *q++ = htonl(bmval0);
626 *q++ = htonl(bmval1);
634 static int encode_access(struct xdr_stream *xdr, u32 access)
645 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
649 RESERVE_SPACE(8+sizeof(arg->stateid->data));
651 WRITE32(arg->seqid->sequence->counter);
652 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
657 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
663 WRITE64(args->offset);
664 WRITE32(args->count);
669 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
675 WRITE32(create->ftype);
677 switch (create->ftype) {
680 WRITE32(create->u.symlink.len);
681 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
684 case NF4BLK: case NF4CHR:
686 WRITE32(create->u.device.specdata1);
687 WRITE32(create->u.device.specdata2);
694 RESERVE_SPACE(4 + create->name->len);
695 WRITE32(create->name->len);
696 WRITEMEM(create->name->name, create->name->len);
698 return encode_attrs(xdr, create->attrs, create->server);
701 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
712 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
724 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
726 return encode_getattr_two(xdr,
727 bitmask[0] & nfs4_fattr_bitmap[0],
728 bitmask[1] & nfs4_fattr_bitmap[1]);
731 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
733 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
734 bitmask[1] & nfs4_fsinfo_bitmap[1]);
737 static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
739 return encode_getattr_two(xdr,
740 bitmask[0] & nfs4_fs_locations_bitmap[0],
741 bitmask[1] & nfs4_fs_locations_bitmap[1]);
744 static int encode_getfh(struct xdr_stream *xdr)
754 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
758 RESERVE_SPACE(8 + name->len);
761 WRITEMEM(name->name, name->len);
766 static inline int nfs4_lock_type(struct file_lock *fl, int block)
768 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
769 return block ? NFS4_READW_LT : NFS4_READ_LT;
770 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
773 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
775 if (fl->fl_end == OFFSET_MAX)
777 return fl->fl_end - fl->fl_start + 1;
781 * opcode,type,reclaim,offset,length,new_lock_owner = 32
782 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
784 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
790 WRITE32(nfs4_lock_type(args->fl, args->block));
791 WRITE32(args->reclaim);
792 WRITE64(args->fl->fl_start);
793 WRITE64(nfs4_lock_length(args->fl));
794 WRITE32(args->new_lock_owner);
795 if (args->new_lock_owner){
797 WRITE32(args->open_seqid->sequence->counter);
798 WRITEMEM(args->open_stateid->data, sizeof(args->open_stateid->data));
799 WRITE32(args->lock_seqid->sequence->counter);
800 WRITE64(args->lock_owner.clientid);
802 WRITE32(args->lock_owner.id);
806 WRITEMEM(args->lock_stateid->data, sizeof(args->lock_stateid->data));
807 WRITE32(args->lock_seqid->sequence->counter);
813 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
819 WRITE32(nfs4_lock_type(args->fl, 0));
820 WRITE64(args->fl->fl_start);
821 WRITE64(nfs4_lock_length(args->fl));
822 WRITE64(args->lock_owner.clientid);
824 WRITE32(args->lock_owner.id);
829 static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
835 WRITE32(nfs4_lock_type(args->fl, 0));
836 WRITE32(args->seqid->sequence->counter);
837 WRITEMEM(args->stateid->data, sizeof(args->stateid->data));
838 WRITE64(args->fl->fl_start);
839 WRITE64(nfs4_lock_length(args->fl));
844 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
849 RESERVE_SPACE(8 + len);
852 WRITEMEM(name->name, len);
857 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
862 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
864 WRITE32(NFS4_SHARE_ACCESS_READ);
867 WRITE32(NFS4_SHARE_ACCESS_WRITE);
869 case FMODE_READ|FMODE_WRITE:
870 WRITE32(NFS4_SHARE_ACCESS_BOTH);
875 WRITE32(0); /* for linux, share_deny = 0 always */
878 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
882 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
887 WRITE32(arg->seqid->sequence->counter);
888 encode_share_access(xdr, arg->open_flags);
890 WRITE64(arg->clientid);
895 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
900 switch(arg->open_flags & O_EXCL) {
902 WRITE32(NFS4_CREATE_UNCHECKED);
903 encode_attrs(xdr, arg->u.attrs, arg->server);
906 WRITE32(NFS4_CREATE_EXCLUSIVE);
907 encode_nfs4_verifier(xdr, &arg->u.verifier);
911 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
916 switch (arg->open_flags & O_CREAT) {
918 WRITE32(NFS4_OPEN_NOCREATE);
921 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
922 WRITE32(NFS4_OPEN_CREATE);
923 encode_createmode(xdr, arg);
927 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
932 switch (delegation_type) {
934 WRITE32(NFS4_OPEN_DELEGATE_NONE);
937 WRITE32(NFS4_OPEN_DELEGATE_READ);
939 case FMODE_WRITE|FMODE_READ:
940 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
947 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
952 WRITE32(NFS4_OPEN_CLAIM_NULL);
953 encode_string(xdr, name->len, name->name);
956 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
961 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
962 encode_delegation_type(xdr, type);
965 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
969 RESERVE_SPACE(4+sizeof(stateid->data));
970 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
971 WRITEMEM(stateid->data, sizeof(stateid->data));
972 encode_string(xdr, name->len, name->name);
975 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
977 encode_openhdr(xdr, arg);
978 encode_opentype(xdr, arg);
979 switch (arg->claim) {
980 case NFS4_OPEN_CLAIM_NULL:
981 encode_claim_null(xdr, arg->name);
983 case NFS4_OPEN_CLAIM_PREVIOUS:
984 encode_claim_previous(xdr, arg->u.delegation_type);
986 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
987 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
995 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
999 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1000 WRITE32(OP_OPEN_CONFIRM);
1001 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
1002 WRITE32(arg->seqid->sequence->counter);
1007 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
1011 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1012 WRITE32(OP_OPEN_DOWNGRADE);
1013 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
1014 WRITE32(arg->seqid->sequence->counter);
1015 encode_share_access(xdr, arg->open_flags);
1020 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1025 RESERVE_SPACE(8 + len);
1028 WRITEMEM(fh->data, len);
1033 static int encode_putrootfh(struct xdr_stream *xdr)
1038 WRITE32(OP_PUTROOTFH);
1043 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1045 nfs4_stateid stateid;
1049 if (ctx->state != NULL) {
1050 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1051 WRITEMEM(stateid.data, sizeof(stateid.data));
1053 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1056 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1063 encode_stateid(xdr, args->context);
1066 WRITE64(args->offset);
1067 WRITE32(args->count);
1072 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1074 struct rpc_auth *auth = req->rq_task->tk_auth;
1075 uint32_t attrs[2] = {
1076 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1077 FATTR4_WORD1_MOUNTED_ON_FILEID,
1082 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1083 WRITE32(OP_READDIR);
1084 WRITE64(readdir->cookie);
1085 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1086 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1087 WRITE32(readdir->count);
1089 /* Switch to mounted_on_fileid if the server supports it */
1090 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1091 attrs[0] &= ~FATTR4_WORD0_FILEID;
1093 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1094 WRITE32(attrs[0] & readdir->bitmask[0]);
1095 WRITE32(attrs[1] & readdir->bitmask[1]);
1096 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1098 (unsigned long long)readdir->cookie,
1099 ((u32 *)readdir->verifier.data)[0],
1100 ((u32 *)readdir->verifier.data)[1],
1101 attrs[0] & readdir->bitmask[0],
1102 attrs[1] & readdir->bitmask[1]);
1104 /* set up reply kvec
1105 * toplevel_status + taglen + rescount + OP_PUTFH + status
1106 * + OP_READDIR + status + verifer(2) = 9
1108 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1109 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1110 readdir->pgbase, readdir->count);
1111 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1112 __FUNCTION__, replen, readdir->pages,
1113 readdir->pgbase, readdir->count);
1118 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1120 struct rpc_auth *auth = req->rq_task->tk_auth;
1121 unsigned int replen;
1125 WRITE32(OP_READLINK);
1127 /* set up reply kvec
1128 * toplevel_status + taglen + rescount + OP_PUTFH + status
1129 * + OP_READLINK + status + string length = 8
1131 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1132 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1133 readlink->pgbase, readlink->pglen);
1138 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1142 RESERVE_SPACE(8 + name->len);
1145 WRITEMEM(name->name, name->len);
1150 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1154 RESERVE_SPACE(8 + oldname->len);
1156 WRITE32(oldname->len);
1157 WRITEMEM(oldname->name, oldname->len);
1159 RESERVE_SPACE(4 + newname->len);
1160 WRITE32(newname->len);
1161 WRITEMEM(newname->name, newname->len);
1166 static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
1172 WRITE64(client_stateid->cl_clientid);
1178 encode_restorefh(struct xdr_stream *xdr)
1183 WRITE32(OP_RESTOREFH);
1189 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1193 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1194 WRITE32(OP_SETATTR);
1195 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1198 WRITE32(FATTR4_WORD0_ACL);
1199 if (arg->acl_len % 4)
1202 WRITE32(arg->acl_len);
1203 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1208 encode_savefh(struct xdr_stream *xdr)
1218 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1223 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1224 WRITE32(OP_SETATTR);
1225 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1227 if ((status = encode_attrs(xdr, arg->iap, server)))
1233 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1237 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1238 WRITE32(OP_SETCLIENTID);
1239 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1241 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1243 WRITE32(setclientid->sc_prog);
1244 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1245 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1247 WRITE32(setclientid->sc_cb_ident);
1252 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
1256 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1257 WRITE32(OP_SETCLIENTID_CONFIRM);
1258 WRITE64(client_state->cl_clientid);
1259 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1264 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1271 encode_stateid(xdr, args->context);
1274 WRITE64(args->offset);
1275 WRITE32(args->stable);
1276 WRITE32(args->count);
1278 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1283 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1289 WRITE32(OP_DELEGRETURN);
1290 WRITEMEM(stateid->data, sizeof(stateid->data));
1295 * END OF "GENERIC" ENCODE ROUTINES.
1299 * Encode an ACCESS request
1301 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1303 struct xdr_stream xdr;
1304 struct compound_hdr hdr = {
1309 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1310 encode_compound_hdr(&xdr, &hdr);
1311 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1312 status = encode_access(&xdr, args->access);
1317 * Encode LOOKUP request
1319 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1321 struct xdr_stream xdr;
1322 struct compound_hdr hdr = {
1327 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1328 encode_compound_hdr(&xdr, &hdr);
1329 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1331 if ((status = encode_lookup(&xdr, args->name)) != 0)
1333 if ((status = encode_getfh(&xdr)) != 0)
1335 status = encode_getfattr(&xdr, args->bitmask);
1341 * Encode LOOKUP_ROOT request
1343 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1345 struct xdr_stream xdr;
1346 struct compound_hdr hdr = {
1351 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1352 encode_compound_hdr(&xdr, &hdr);
1353 if ((status = encode_putrootfh(&xdr)) != 0)
1355 if ((status = encode_getfh(&xdr)) == 0)
1356 status = encode_getfattr(&xdr, args->bitmask);
1362 * Encode REMOVE request
1364 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs4_remove_arg *args)
1366 struct xdr_stream xdr;
1367 struct compound_hdr hdr = {
1372 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1373 encode_compound_hdr(&xdr, &hdr);
1374 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1376 if ((status = encode_remove(&xdr, args->name)) != 0)
1378 status = encode_getfattr(&xdr, args->bitmask);
1384 * Encode RENAME request
1386 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1388 struct xdr_stream xdr;
1389 struct compound_hdr hdr = {
1394 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1395 encode_compound_hdr(&xdr, &hdr);
1396 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1398 if ((status = encode_savefh(&xdr)) != 0)
1400 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1402 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1404 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1406 if ((status = encode_restorefh(&xdr)) != 0)
1408 status = encode_getfattr(&xdr, args->bitmask);
1414 * Encode LINK request
1416 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1418 struct xdr_stream xdr;
1419 struct compound_hdr hdr = {
1424 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1425 encode_compound_hdr(&xdr, &hdr);
1426 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1428 if ((status = encode_savefh(&xdr)) != 0)
1430 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1432 if ((status = encode_link(&xdr, args->name)) != 0)
1434 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1436 if ((status = encode_restorefh(&xdr)) != 0)
1438 status = encode_getfattr(&xdr, args->bitmask);
1444 * Encode CREATE request
1446 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1448 struct xdr_stream xdr;
1449 struct compound_hdr hdr = {
1454 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1455 encode_compound_hdr(&xdr, &hdr);
1456 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1458 if ((status = encode_savefh(&xdr)) != 0)
1460 if ((status = encode_create(&xdr, args)) != 0)
1462 if ((status = encode_getfh(&xdr)) != 0)
1464 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1466 if ((status = encode_restorefh(&xdr)) != 0)
1468 status = encode_getfattr(&xdr, args->bitmask);
1474 * Encode SYMLINK request
1476 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1478 return nfs4_xdr_enc_create(req, p, args);
1482 * Encode GETATTR request
1484 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1486 struct xdr_stream xdr;
1487 struct compound_hdr hdr = {
1492 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1493 encode_compound_hdr(&xdr, &hdr);
1494 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1495 status = encode_getfattr(&xdr, args->bitmask);
1500 * Encode a CLOSE request
1502 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1504 struct xdr_stream xdr;
1505 struct compound_hdr hdr = {
1510 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1511 encode_compound_hdr(&xdr, &hdr);
1512 status = encode_putfh(&xdr, args->fh);
1515 status = encode_close(&xdr, args);
1518 status = encode_getfattr(&xdr, args->bitmask);
1524 * Encode an OPEN request
1526 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1528 struct xdr_stream xdr;
1529 struct compound_hdr hdr = {
1534 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1535 encode_compound_hdr(&xdr, &hdr);
1536 status = encode_putfh(&xdr, args->fh);
1539 status = encode_savefh(&xdr);
1542 status = encode_open(&xdr, args);
1545 status = encode_getfh(&xdr);
1548 status = encode_getfattr(&xdr, args->bitmask);
1551 status = encode_restorefh(&xdr);
1554 status = encode_getfattr(&xdr, args->bitmask);
1560 * Encode an OPEN_CONFIRM request
1562 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1564 struct xdr_stream xdr;
1565 struct compound_hdr hdr = {
1570 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1571 encode_compound_hdr(&xdr, &hdr);
1572 status = encode_putfh(&xdr, args->fh);
1575 status = encode_open_confirm(&xdr, args);
1581 * Encode an OPEN request with no attributes.
1583 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1585 struct xdr_stream xdr;
1586 struct compound_hdr hdr = {
1591 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1592 encode_compound_hdr(&xdr, &hdr);
1593 status = encode_putfh(&xdr, args->fh);
1596 status = encode_open(&xdr, args);
1599 status = encode_getfattr(&xdr, args->bitmask);
1605 * Encode an OPEN_DOWNGRADE request
1607 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1609 struct xdr_stream xdr;
1610 struct compound_hdr hdr = {
1615 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1616 encode_compound_hdr(&xdr, &hdr);
1617 status = encode_putfh(&xdr, args->fh);
1620 status = encode_open_downgrade(&xdr, args);
1623 status = encode_getfattr(&xdr, args->bitmask);
1629 * Encode a LOCK request
1631 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1633 struct xdr_stream xdr;
1634 struct compound_hdr hdr = {
1639 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1640 encode_compound_hdr(&xdr, &hdr);
1641 status = encode_putfh(&xdr, args->fh);
1644 status = encode_lock(&xdr, args);
1650 * Encode a LOCKT request
1652 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1654 struct xdr_stream xdr;
1655 struct compound_hdr hdr = {
1660 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1661 encode_compound_hdr(&xdr, &hdr);
1662 status = encode_putfh(&xdr, args->fh);
1665 status = encode_lockt(&xdr, args);
1671 * Encode a LOCKU request
1673 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1675 struct xdr_stream xdr;
1676 struct compound_hdr hdr = {
1681 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1682 encode_compound_hdr(&xdr, &hdr);
1683 status = encode_putfh(&xdr, args->fh);
1686 status = encode_locku(&xdr, args);
1692 * Encode a READLINK request
1694 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1696 struct xdr_stream xdr;
1697 struct compound_hdr hdr = {
1702 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1703 encode_compound_hdr(&xdr, &hdr);
1704 status = encode_putfh(&xdr, args->fh);
1707 status = encode_readlink(&xdr, args, req);
1713 * Encode a READDIR request
1715 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1717 struct xdr_stream xdr;
1718 struct compound_hdr hdr = {
1723 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1724 encode_compound_hdr(&xdr, &hdr);
1725 status = encode_putfh(&xdr, args->fh);
1728 status = encode_readdir(&xdr, args, req);
1734 * Encode a READ request
1736 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1738 struct rpc_auth *auth = req->rq_task->tk_auth;
1739 struct xdr_stream xdr;
1740 struct compound_hdr hdr = {
1745 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1746 encode_compound_hdr(&xdr, &hdr);
1747 status = encode_putfh(&xdr, args->fh);
1750 status = encode_read(&xdr, args);
1754 /* set up reply kvec
1755 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1756 * + OP_READ + status + eof + datalen = 9
1758 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1759 xdr_inline_pages(&req->rq_rcv_buf, replen,
1760 args->pages, args->pgbase, args->count);
1766 * Encode an SETATTR request
1768 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1771 struct xdr_stream xdr;
1772 struct compound_hdr hdr = {
1777 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1778 encode_compound_hdr(&xdr, &hdr);
1779 status = encode_putfh(&xdr, args->fh);
1782 status = encode_setattr(&xdr, args, args->server);
1785 status = encode_getfattr(&xdr, args->bitmask);
1791 * Encode a GETACL request
1794 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
1795 struct nfs_getaclargs *args)
1797 struct xdr_stream xdr;
1798 struct rpc_auth *auth = req->rq_task->tk_auth;
1799 struct compound_hdr hdr = {
1804 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1805 encode_compound_hdr(&xdr, &hdr);
1806 status = encode_putfh(&xdr, args->fh);
1809 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1810 /* set up reply buffer: */
1811 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1812 xdr_inline_pages(&req->rq_rcv_buf, replen,
1813 args->acl_pages, args->acl_pgbase, args->acl_len);
1819 * Encode a WRITE request
1821 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1823 struct xdr_stream xdr;
1824 struct compound_hdr hdr = {
1829 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1830 encode_compound_hdr(&xdr, &hdr);
1831 status = encode_putfh(&xdr, args->fh);
1834 status = encode_write(&xdr, args);
1837 status = encode_getfattr(&xdr, args->bitmask);
1845 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1847 struct xdr_stream xdr;
1848 struct compound_hdr hdr = {
1853 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1854 encode_compound_hdr(&xdr, &hdr);
1855 status = encode_putfh(&xdr, args->fh);
1858 status = encode_commit(&xdr, args);
1861 status = encode_getfattr(&xdr, args->bitmask);
1869 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
1871 struct xdr_stream xdr;
1872 struct compound_hdr hdr = {
1877 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1878 encode_compound_hdr(&xdr, &hdr);
1879 status = encode_putfh(&xdr, args->fh);
1881 status = encode_fsinfo(&xdr, args->bitmask);
1886 * a PATHCONF request
1888 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
1890 struct xdr_stream xdr;
1891 struct compound_hdr hdr = {
1896 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1897 encode_compound_hdr(&xdr, &hdr);
1898 status = encode_putfh(&xdr, args->fh);
1900 status = encode_getattr_one(&xdr,
1901 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1908 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
1910 struct xdr_stream xdr;
1911 struct compound_hdr hdr = {
1916 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1917 encode_compound_hdr(&xdr, &hdr);
1918 status = encode_putfh(&xdr, args->fh);
1920 status = encode_getattr_two(&xdr,
1921 args->bitmask[0] & nfs4_statfs_bitmap[0],
1922 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1927 * GETATTR_BITMAP request
1929 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
1931 struct xdr_stream xdr;
1932 struct compound_hdr hdr = {
1937 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1938 encode_compound_hdr(&xdr, &hdr);
1939 status = encode_putfh(&xdr, fhandle);
1941 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1942 FATTR4_WORD0_LINK_SUPPORT|
1943 FATTR4_WORD0_SYMLINK_SUPPORT|
1944 FATTR4_WORD0_ACLSUPPORT);
1951 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1953 struct xdr_stream xdr;
1954 struct compound_hdr hdr = {
1958 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1959 encode_compound_hdr(&xdr, &hdr);
1960 return encode_renew(&xdr, clp);
1964 * a SETCLIENTID request
1966 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
1968 struct xdr_stream xdr;
1969 struct compound_hdr hdr = {
1973 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1974 encode_compound_hdr(&xdr, &hdr);
1975 return encode_setclientid(&xdr, sc);
1979 * a SETCLIENTID_CONFIRM request
1981 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1983 struct xdr_stream xdr;
1984 struct compound_hdr hdr = {
1987 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1990 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1991 encode_compound_hdr(&xdr, &hdr);
1992 status = encode_setclientid_confirm(&xdr, clp);
1994 status = encode_putrootfh(&xdr);
1996 status = encode_fsinfo(&xdr, lease_bitmap);
2001 * DELEGRETURN request
2003 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2005 struct xdr_stream xdr;
2006 struct compound_hdr hdr = {
2011 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2012 encode_compound_hdr(&xdr, &hdr);
2013 status = encode_putfh(&xdr, args->fhandle);
2016 status = encode_delegreturn(&xdr, args->stateid);
2019 status = encode_getfattr(&xdr, args->bitmask);
2025 * Encode FS_LOCATIONS request
2027 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2029 struct xdr_stream xdr;
2030 struct compound_hdr hdr = {
2033 struct rpc_auth *auth = req->rq_task->tk_auth;
2037 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2038 encode_compound_hdr(&xdr, &hdr);
2039 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2041 if ((status = encode_lookup(&xdr, args->name)) != 0)
2043 if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
2046 * toplevel_status + OP_PUTFH + status
2047 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2049 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2050 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2057 * START OF "GENERIC" DECODE ROUTINES.
2058 * These may look a little ugly since they are imported from a "generic"
2059 * set of XDR encode/decode routines which are intended to be shared by
2060 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2062 * If the pain of reading these is too great, it should be a straightforward
2063 * task to translate them into Linux-specific versions which are more
2064 * consistent with the style used in NFSv2/v3...
2066 #define READ32(x) (x) = ntohl(*p++)
2067 #define READ64(x) do { \
2068 (x) = (u64)ntohl(*p++) << 32; \
2069 (x) |= ntohl(*p++); \
2071 #define READTIME(x) do { \
2073 (x.tv_sec) = ntohl(*p++); \
2074 (x.tv_nsec) = ntohl(*p++); \
2076 #define COPYMEM(x,nbytes) do { \
2077 memcpy((x), p, nbytes); \
2078 p += XDR_QUADLEN(nbytes); \
2081 #define READ_BUF(nbytes) do { \
2082 p = xdr_inline_decode(xdr, nbytes); \
2084 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
2085 __FUNCTION__, __LINE__); \
2090 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2097 *string = (char *)p;
2101 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2106 READ32(hdr->status);
2107 READ32(hdr->taglen);
2109 READ_BUF(hdr->taglen + 4);
2110 hdr->tag = (char *)p;
2111 p += XDR_QUADLEN(hdr->taglen);
2116 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2124 if (opnum != expected) {
2126 "nfs4_decode_op_hdr: Server returned operation"
2127 " %d but we issued a request for %d\n",
2132 if (nfserr != NFS_OK)
2133 return -nfs4_stat_to_errno(nfserr);
2138 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2141 unsigned int strlen;
2145 return decode_opaque_inline(xdr, &strlen, &str);
2148 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2156 bitmap[0] = bitmap[1] = 0;
2157 READ_BUF((bmlen << 2));
2166 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2176 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2178 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2179 decode_attr_bitmap(xdr, bitmask);
2180 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2182 bitmask[0] = bitmask[1] = 0;
2183 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2187 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2192 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2194 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2197 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2198 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2201 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2203 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2207 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2212 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2214 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2217 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2219 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2220 (unsigned long long)*change);
2224 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2229 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2231 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2234 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2236 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2240 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2245 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2247 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2250 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2252 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2256 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2261 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2263 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2266 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2268 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2272 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2278 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2280 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2282 READ64(fsid->major);
2283 READ64(fsid->minor);
2284 bitmap[0] &= ~FATTR4_WORD0_FSID;
2286 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2287 (unsigned long long)fsid->major,
2288 (unsigned long long)fsid->minor);
2292 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2297 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2299 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2302 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2304 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2308 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2312 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2313 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2315 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2318 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2320 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2324 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2329 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2331 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2334 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2336 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2340 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2345 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2347 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2350 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2352 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2356 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2362 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2364 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2367 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2369 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2373 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2379 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2381 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2384 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2386 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2390 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2396 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2398 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2401 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2403 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2407 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2420 path->ncomponents = 0;
2421 while (path->ncomponents < n) {
2422 struct nfs4_string *component = &path->components[path->ncomponents];
2423 status = decode_opaque_inline(xdr, &component->len, &component->data);
2424 if (unlikely(status != 0))
2426 if (path->ncomponents != n)
2428 dprintk("%s", component->data);
2429 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2430 path->ncomponents++;
2432 dprintk("cannot parse %d components in path\n", n);
2440 /* a root pathname is sent as a zero component4 */
2441 path->ncomponents = 1;
2442 path->components[0].len=0;
2443 path->components[0].data=NULL;
2444 dprintk("path /\n");
2447 dprintk(" status %d", status);
2452 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2458 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2461 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2463 dprintk("%s: fsroot ", __FUNCTION__);
2464 status = decode_pathname(xdr, &res->fs_path);
2465 if (unlikely(status != 0))
2471 res->nlocations = 0;
2472 while (res->nlocations < n) {
2474 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2482 dprintk("%s: servers ", __FUNCTION__);
2483 while (loc->nservers < m) {
2484 struct nfs4_string *server = &loc->servers[loc->nservers];
2485 status = decode_opaque_inline(xdr, &server->len, &server->data);
2486 if (unlikely(status != 0))
2488 dprintk("%s ", server->data);
2489 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2493 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2494 for (i = loc->nservers; i < m; i++) {
2497 status = decode_opaque_inline(xdr, &len, &data);
2498 if (unlikely(status != 0))
2503 status = decode_pathname(xdr, &loc->rootpath);
2504 if (unlikely(status != 0))
2506 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2510 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2517 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2523 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2525 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2528 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2530 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2534 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2540 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2542 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2545 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2547 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2551 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2557 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2559 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2562 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2564 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2568 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2574 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2576 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2580 if (maxread > 0x7FFFFFFF)
2581 maxread = 0x7FFFFFFF;
2582 *res = (uint32_t)maxread;
2583 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2585 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2589 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2595 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2597 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2601 if (maxwrite > 0x7FFFFFFF)
2602 maxwrite = 0x7FFFFFFF;
2603 *res = (uint32_t)maxwrite;
2604 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2606 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2610 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2615 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2617 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2621 bitmap[1] &= ~FATTR4_WORD1_MODE;
2623 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2627 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2632 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2634 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2637 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2639 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2643 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, int32_t *uid)
2649 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2651 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2655 if (len < XDR_MAX_NETOBJ) {
2656 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2657 dprintk("%s: nfs_map_name_to_uid failed!\n",
2660 printk(KERN_WARNING "%s: name too long (%u)!\n",
2662 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2664 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2668 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, int32_t *gid)
2674 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2676 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2680 if (len < XDR_MAX_NETOBJ) {
2681 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2682 dprintk("%s: nfs_map_group_to_gid failed!\n",
2685 printk(KERN_WARNING "%s: name too long (%u)!\n",
2687 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2689 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2693 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2695 uint32_t major = 0, minor = 0;
2699 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2701 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2707 tmp = MKDEV(major, minor);
2708 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2710 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2712 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2716 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2722 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2724 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2727 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2729 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2733 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2739 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2741 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2744 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2746 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2750 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2756 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2758 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2761 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2763 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2767 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2772 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2774 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2777 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2779 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2780 (unsigned long long)*used);
2784 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2793 time->tv_sec = (time_t)sec;
2794 time->tv_nsec = (long)nsec;
2798 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2804 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2806 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2807 status = decode_attr_time(xdr, time);
2808 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2810 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2814 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2820 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2822 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2823 status = decode_attr_time(xdr, time);
2824 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2826 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2830 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2836 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2838 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2839 status = decode_attr_time(xdr, time);
2840 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2842 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2846 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
2848 unsigned int attrwords = XDR_QUADLEN(attrlen);
2849 unsigned int nwords = xdr->p - savep;
2851 if (unlikely(attrwords != nwords)) {
2852 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2855 (attrwords < nwords) ? '<' : '>',
2862 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2867 READ32(cinfo->atomic);
2868 READ64(cinfo->before);
2869 READ64(cinfo->after);
2873 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2879 status = decode_op_hdr(xdr, OP_ACCESS);
2885 access->supported = supp;
2886 access->access = acc;
2890 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2895 status = decode_op_hdr(xdr, OP_CLOSE);
2898 READ_BUF(sizeof(res->stateid.data));
2899 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2903 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2908 status = decode_op_hdr(xdr, OP_COMMIT);
2912 COPYMEM(res->verf->verifier, 8);
2916 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2922 status = decode_op_hdr(xdr, OP_CREATE);
2925 if ((status = decode_change_info(xdr, cinfo)))
2929 READ_BUF(bmlen << 2);
2933 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2940 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2942 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2944 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2946 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2948 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2950 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2952 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2954 status = verify_attr_len(xdr, savep, attrlen);
2956 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2960 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2967 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2969 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2971 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2974 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2976 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2978 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2980 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2982 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2984 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2987 status = verify_attr_len(xdr, savep, attrlen);
2989 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2993 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3000 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3002 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3004 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3007 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3009 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3012 status = verify_attr_len(xdr, savep, attrlen);
3014 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3018 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3024 int status, fmode = 0;
3027 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3029 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3032 fattr->bitmap[0] = bitmap[0];
3033 fattr->bitmap[1] = bitmap[1];
3035 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3039 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3041 fattr->type = nfs_type2fmt[type].nfs2type;
3042 fmode = nfs_type2fmt[type].mode;
3044 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3046 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3048 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
3050 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3052 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3053 struct nfs4_fs_locations,
3056 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3058 fattr->mode |= fmode;
3059 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3061 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
3063 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
3065 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3067 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3069 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3071 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3073 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3075 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3077 if (fattr->fileid == 0 && fileid != 0)
3078 fattr->fileid = fileid;
3079 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
3080 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
3082 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
3087 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3090 uint32_t attrlen, bitmap[2];
3093 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3095 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3097 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3100 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3102 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3104 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3106 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3108 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3109 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3111 fsinfo->wtpref = fsinfo->wtmax;
3113 status = verify_attr_len(xdr, savep, attrlen);
3115 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3119 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3125 status = decode_op_hdr(xdr, OP_GETFH);
3128 /* Zero handle first to allow comparisons */
3129 memset(fh, 0, sizeof(*fh));
3133 if (len > NFS4_FHSIZE)
3137 COPYMEM(fh->data, len);
3141 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3145 status = decode_op_hdr(xdr, OP_LINK);
3148 return decode_change_info(xdr, cinfo);
3152 * We create the owner, so we know a proper owner.id length is 4.
3154 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3156 uint64_t offset, length, clientid;
3158 uint32_t namelen, type;
3165 fl->fl_start = (loff_t)offset;
3166 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3167 if (length == ~(uint64_t)0)
3168 fl->fl_end = OFFSET_MAX;
3169 fl->fl_type = F_WRLCK;
3171 fl->fl_type = F_RDLCK;
3177 return -NFS4ERR_DENIED;
3180 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3185 status = decode_op_hdr(xdr, OP_LOCK);
3187 READ_BUF(sizeof(res->stateid.data));
3188 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3189 } else if (status == -NFS4ERR_DENIED)
3190 return decode_lock_denied(xdr, NULL);
3194 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3197 status = decode_op_hdr(xdr, OP_LOCKT);
3198 if (status == -NFS4ERR_DENIED)
3199 return decode_lock_denied(xdr, res->denied);
3203 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3208 status = decode_op_hdr(xdr, OP_LOCKU);
3210 READ_BUF(sizeof(res->stateid.data));
3211 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3216 static int decode_lookup(struct xdr_stream *xdr)
3218 return decode_op_hdr(xdr, OP_LOOKUP);
3221 /* This is too sick! */
3222 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3225 uint32_t limit_type, nblocks, blocksize;
3229 switch (limit_type) {
3236 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3241 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3244 uint32_t delegation_type;
3247 READ32(delegation_type);
3248 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3249 res->delegation_type = 0;
3253 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3254 READ32(res->do_recall);
3255 switch (delegation_type) {
3256 case NFS4_OPEN_DELEGATE_READ:
3257 res->delegation_type = FMODE_READ;
3259 case NFS4_OPEN_DELEGATE_WRITE:
3260 res->delegation_type = FMODE_WRITE|FMODE_READ;
3261 if (decode_space_limit(xdr, &res->maxsize) < 0)
3264 return decode_ace(xdr, NULL, res->server->nfs_client);
3267 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3273 status = decode_op_hdr(xdr, OP_OPEN);
3276 READ_BUF(sizeof(res->stateid.data));
3277 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3279 decode_change_info(xdr, &res->cinfo);
3282 READ32(res->rflags);
3287 READ_BUF(bmlen << 2);
3289 return decode_delegation(xdr, res);
3291 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
3295 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3300 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3303 READ_BUF(sizeof(res->stateid.data));
3304 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3308 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3313 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3316 READ_BUF(sizeof(res->stateid.data));
3317 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3321 static int decode_putfh(struct xdr_stream *xdr)
3323 return decode_op_hdr(xdr, OP_PUTFH);
3326 static int decode_putrootfh(struct xdr_stream *xdr)
3328 return decode_op_hdr(xdr, OP_PUTROOTFH);
3331 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3333 struct kvec *iov = req->rq_rcv_buf.head;
3335 uint32_t count, eof, recvd, hdrlen;
3338 status = decode_op_hdr(xdr, OP_READ);
3344 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3345 recvd = req->rq_rcv_buf.len - hdrlen;
3346 if (count > recvd) {
3347 printk(KERN_WARNING "NFS: server cheating in read reply: "
3348 "count %u > recvd %u\n", count, recvd);
3352 xdr_read_pages(xdr, count);
3358 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3360 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3361 struct page *page = *rcvbuf->pages;
3362 struct kvec *iov = rcvbuf->head;
3363 unsigned int nr, pglen = rcvbuf->page_len;
3364 __be32 *end, *entry, *p, *kaddr;
3365 uint32_t len, attrlen, xlen;
3366 int hdrlen, recvd, status;
3368 status = decode_op_hdr(xdr, OP_READDIR);
3372 COPYMEM(readdir->verifier.data, 8);
3373 dprintk("%s: verifier = 0x%x%x\n",
3375 ((u32 *)readdir->verifier.data)[0],
3376 ((u32 *)readdir->verifier.data)[1]);
3379 hdrlen = (char *) p - (char *) iov->iov_base;
3380 recvd = rcvbuf->len - hdrlen;
3383 xdr_read_pages(xdr, pglen);
3385 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3386 kaddr = p = kmap_atomic(page, KM_USER0);
3387 end = p + ((pglen + readdir->pgbase) >> 2);
3389 for (nr = 0; *p++; nr++) {
3392 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3393 p += 2; /* cookie */
3394 len = ntohl(*p++); /* filename length */
3395 if (len > NFS4_MAXNAMLEN) {
3396 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3399 xlen = XDR_QUADLEN(len);
3400 if (end - p < xlen + 1)
3402 dprintk("filename = %*s\n", len, (char *)p);
3404 len = ntohl(*p++); /* bitmap length */
3405 if (end - p < len + 1)
3408 attrlen = XDR_QUADLEN(ntohl(*p++));
3409 if (end - p < attrlen + 2)
3411 p += attrlen; /* attributes */
3414 if (!nr && (entry[0] != 0 || entry[1] == 0))
3417 kunmap_atomic(kaddr, KM_USER0);
3420 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
3421 entry[0] = entry[1] = 0;
3422 /* truncate listing ? */
3424 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3429 kunmap_atomic(kaddr, KM_USER0);
3430 return -errno_NFSERR_IO;
3433 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3435 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3436 struct kvec *iov = rcvbuf->head;
3437 int hdrlen, len, recvd;
3442 status = decode_op_hdr(xdr, OP_READLINK);
3446 /* Convert length of symlink */
3449 if (len >= rcvbuf->page_len || len <= 0) {
3450 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3451 return -ENAMETOOLONG;
3453 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3454 recvd = req->rq_rcv_buf.len - hdrlen;
3456 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3457 "count %u > recvd %u\n", len, recvd);
3460 xdr_read_pages(xdr, len);
3462 * The XDR encode routine has set things up so that
3463 * the link text will be copied directly into the
3464 * buffer. We just have to do overflow-checking,
3465 * and and null-terminate the text (the VFS expects
3466 * null-termination).
3468 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3469 kaddr[len+rcvbuf->page_base] = '\0';
3470 kunmap_atomic(kaddr, KM_USER0);
3474 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3478 status = decode_op_hdr(xdr, OP_REMOVE);
3481 status = decode_change_info(xdr, cinfo);
3486 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3487 struct nfs4_change_info *new_cinfo)
3491 status = decode_op_hdr(xdr, OP_RENAME);
3494 if ((status = decode_change_info(xdr, old_cinfo)))
3496 status = decode_change_info(xdr, new_cinfo);
3501 static int decode_renew(struct xdr_stream *xdr)
3503 return decode_op_hdr(xdr, OP_RENEW);
3507 decode_restorefh(struct xdr_stream *xdr)
3509 return decode_op_hdr(xdr, OP_RESTOREFH);
3512 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3518 struct kvec *iov = req->rq_rcv_buf.head;
3522 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3524 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3526 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3529 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3531 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3534 /* We ignore &savep and don't do consistency checks on
3535 * the attr length. Let userspace figure it out.... */
3536 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3537 recvd = req->rq_rcv_buf.len - hdrlen;
3538 if (attrlen > recvd) {
3539 printk(KERN_WARNING "NFS: server cheating in getattr"
3540 " acl reply: attrlen %u > recvd %u\n",
3544 xdr_read_pages(xdr, attrlen);
3547 status = -EOPNOTSUPP;
3554 decode_savefh(struct xdr_stream *xdr)
3556 return decode_op_hdr(xdr, OP_SAVEFH);
3559 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3566 status = decode_op_hdr(xdr, OP_SETATTR);
3571 READ_BUF(bmlen << 2);
3575 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
3583 if (opnum != OP_SETCLIENTID) {
3585 "nfs4_decode_setclientid: Server returned operation"
3590 if (nfserr == NFS_OK) {
3591 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3592 READ64(clp->cl_clientid);
3593 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3594 } else if (nfserr == NFSERR_CLID_INUSE) {
3597 /* skip netid string */
3602 /* skip uaddr string */
3606 return -NFSERR_CLID_INUSE;
3608 return -nfs4_stat_to_errno(nfserr);
3613 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3615 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3618 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3623 status = decode_op_hdr(xdr, OP_WRITE);
3629 READ32(res->verf->committed);
3630 COPYMEM(res->verf->verifier, 8);
3634 static int decode_delegreturn(struct xdr_stream *xdr)
3636 return decode_op_hdr(xdr, OP_DELEGRETURN);
3640 * Decode OPEN_DOWNGRADE response
3642 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3644 struct xdr_stream xdr;
3645 struct compound_hdr hdr;
3648 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3649 status = decode_compound_hdr(&xdr, &hdr);
3652 status = decode_putfh(&xdr);
3655 status = decode_open_downgrade(&xdr, res);
3658 decode_getfattr(&xdr, res->fattr, res->server);
3664 * END OF "GENERIC" DECODE ROUTINES.
3668 * Decode ACCESS response
3670 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
3672 struct xdr_stream xdr;
3673 struct compound_hdr hdr;
3676 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3677 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3679 if ((status = decode_putfh(&xdr)) == 0)
3680 status = decode_access(&xdr, res);
3686 * Decode LOOKUP response
3688 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3690 struct xdr_stream xdr;
3691 struct compound_hdr hdr;
3694 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3695 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3697 if ((status = decode_putfh(&xdr)) != 0)
3699 if ((status = decode_lookup(&xdr)) != 0)
3701 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3703 status = decode_getfattr(&xdr, res->fattr, res->server);
3709 * Decode LOOKUP_ROOT response
3711 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3713 struct xdr_stream xdr;
3714 struct compound_hdr hdr;
3717 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3718 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3720 if ((status = decode_putrootfh(&xdr)) != 0)
3722 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3723 status = decode_getfattr(&xdr, res->fattr, res->server);
3729 * Decode REMOVE response
3731 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_remove_res *res)
3733 struct xdr_stream xdr;
3734 struct compound_hdr hdr;
3737 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3738 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3740 if ((status = decode_putfh(&xdr)) != 0)
3742 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3744 decode_getfattr(&xdr, res->dir_attr, res->server);
3750 * Decode RENAME response
3752 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
3754 struct xdr_stream xdr;
3755 struct compound_hdr hdr;
3758 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3759 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3761 if ((status = decode_putfh(&xdr)) != 0)
3763 if ((status = decode_savefh(&xdr)) != 0)
3765 if ((status = decode_putfh(&xdr)) != 0)
3767 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3769 /* Current FH is target directory */
3770 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3772 if ((status = decode_restorefh(&xdr)) != 0)
3774 decode_getfattr(&xdr, res->old_fattr, res->server);
3780 * Decode LINK response
3782 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
3784 struct xdr_stream xdr;
3785 struct compound_hdr hdr;
3788 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3789 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3791 if ((status = decode_putfh(&xdr)) != 0)
3793 if ((status = decode_savefh(&xdr)) != 0)
3795 if ((status = decode_putfh(&xdr)) != 0)
3797 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3800 * Note order: OP_LINK leaves the directory as the current
3803 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3805 if ((status = decode_restorefh(&xdr)) != 0)
3807 decode_getfattr(&xdr, res->fattr, res->server);
3813 * Decode CREATE response
3815 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
3817 struct xdr_stream xdr;
3818 struct compound_hdr hdr;
3821 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3822 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3824 if ((status = decode_putfh(&xdr)) != 0)
3826 if ((status = decode_savefh(&xdr)) != 0)
3828 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3830 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3832 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3834 if ((status = decode_restorefh(&xdr)) != 0)
3836 decode_getfattr(&xdr, res->dir_fattr, res->server);
3842 * Decode SYMLINK response
3844 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
3846 return nfs4_xdr_dec_create(rqstp, p, res);
3850 * Decode GETATTR response
3852 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
3854 struct xdr_stream xdr;
3855 struct compound_hdr hdr;
3858 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3859 status = decode_compound_hdr(&xdr, &hdr);
3862 status = decode_putfh(&xdr);
3865 status = decode_getfattr(&xdr, res->fattr, res->server);
3872 * Encode an SETACL request
3875 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
3877 struct xdr_stream xdr;
3878 struct compound_hdr hdr = {
3883 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3884 encode_compound_hdr(&xdr, &hdr);
3885 status = encode_putfh(&xdr, args->fh);
3888 status = encode_setacl(&xdr, args);
3893 * Decode SETACL response
3896 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
3898 struct xdr_stream xdr;
3899 struct compound_hdr hdr;
3902 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3903 status = decode_compound_hdr(&xdr, &hdr);
3906 status = decode_putfh(&xdr);
3909 status = decode_setattr(&xdr, res);
3915 * Decode GETACL response
3918 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
3920 struct xdr_stream xdr;
3921 struct compound_hdr hdr;
3924 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3925 status = decode_compound_hdr(&xdr, &hdr);
3928 status = decode_putfh(&xdr);
3931 status = decode_getacl(&xdr, rqstp, acl_len);
3938 * Decode CLOSE response
3940 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3942 struct xdr_stream xdr;
3943 struct compound_hdr hdr;
3946 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3947 status = decode_compound_hdr(&xdr, &hdr);
3950 status = decode_putfh(&xdr);
3953 status = decode_close(&xdr, res);
3957 * Note: Server may do delete on close for this file
3958 * in which case the getattr call will fail with
3959 * an ESTALE error. Shouldn't be a problem,
3960 * though, since fattr->valid will remain unset.
3962 decode_getfattr(&xdr, res->fattr, res->server);
3968 * Decode OPEN response
3970 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
3972 struct xdr_stream xdr;
3973 struct compound_hdr hdr;
3976 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3977 status = decode_compound_hdr(&xdr, &hdr);
3980 status = decode_putfh(&xdr);
3983 status = decode_savefh(&xdr);
3986 status = decode_open(&xdr, res);
3989 status = decode_getfh(&xdr, &res->fh);
3992 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3994 if ((status = decode_restorefh(&xdr)) != 0)
3996 decode_getfattr(&xdr, res->dir_attr, res->server);
4002 * Decode OPEN_CONFIRM response
4004 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4006 struct xdr_stream xdr;
4007 struct compound_hdr hdr;
4010 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4011 status = decode_compound_hdr(&xdr, &hdr);
4014 status = decode_putfh(&xdr);
4017 status = decode_open_confirm(&xdr, res);
4023 * Decode OPEN response
4025 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4027 struct xdr_stream xdr;
4028 struct compound_hdr hdr;
4031 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4032 status = decode_compound_hdr(&xdr, &hdr);
4035 status = decode_putfh(&xdr);
4038 status = decode_open(&xdr, res);
4041 decode_getfattr(&xdr, res->f_attr, res->server);
4047 * Decode SETATTR response
4049 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4051 struct xdr_stream xdr;
4052 struct compound_hdr hdr;
4055 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4056 status = decode_compound_hdr(&xdr, &hdr);
4059 status = decode_putfh(&xdr);
4062 status = decode_setattr(&xdr, res);
4065 status = decode_getfattr(&xdr, res->fattr, res->server);
4066 if (status == NFS4ERR_DELAY)
4073 * Decode LOCK response
4075 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4077 struct xdr_stream xdr;
4078 struct compound_hdr hdr;
4081 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4082 status = decode_compound_hdr(&xdr, &hdr);
4085 status = decode_putfh(&xdr);
4088 status = decode_lock(&xdr, res);
4094 * Decode LOCKT response
4096 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4098 struct xdr_stream xdr;
4099 struct compound_hdr hdr;
4102 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4103 status = decode_compound_hdr(&xdr, &hdr);
4106 status = decode_putfh(&xdr);
4109 status = decode_lockt(&xdr, res);
4115 * Decode LOCKU response
4117 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4119 struct xdr_stream xdr;
4120 struct compound_hdr hdr;
4123 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4124 status = decode_compound_hdr(&xdr, &hdr);
4127 status = decode_putfh(&xdr);
4130 status = decode_locku(&xdr, res);
4136 * Decode READLINK response
4138 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
4140 struct xdr_stream xdr;
4141 struct compound_hdr hdr;
4144 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4145 status = decode_compound_hdr(&xdr, &hdr);
4148 status = decode_putfh(&xdr);
4151 status = decode_readlink(&xdr, rqstp);
4157 * Decode READDIR response
4159 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4161 struct xdr_stream xdr;
4162 struct compound_hdr hdr;
4165 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4166 status = decode_compound_hdr(&xdr, &hdr);
4169 status = decode_putfh(&xdr);
4172 status = decode_readdir(&xdr, rqstp, res);
4178 * Decode Read response
4180 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4182 struct xdr_stream xdr;
4183 struct compound_hdr hdr;
4186 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4187 status = decode_compound_hdr(&xdr, &hdr);
4190 status = decode_putfh(&xdr);
4193 status = decode_read(&xdr, rqstp, res);
4195 status = res->count;
4201 * Decode WRITE response
4203 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4205 struct xdr_stream xdr;
4206 struct compound_hdr hdr;
4209 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4210 status = decode_compound_hdr(&xdr, &hdr);
4213 status = decode_putfh(&xdr);
4216 status = decode_write(&xdr, res);
4219 decode_getfattr(&xdr, res->fattr, res->server);
4221 status = res->count;
4227 * Decode COMMIT response
4229 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4231 struct xdr_stream xdr;
4232 struct compound_hdr hdr;
4235 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4236 status = decode_compound_hdr(&xdr, &hdr);
4239 status = decode_putfh(&xdr);
4242 status = decode_commit(&xdr, res);
4245 decode_getfattr(&xdr, res->fattr, res->server);
4253 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4255 struct xdr_stream xdr;
4256 struct compound_hdr hdr;
4259 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4260 status = decode_compound_hdr(&xdr, &hdr);
4262 status = decode_putfh(&xdr);
4264 status = decode_fsinfo(&xdr, fsinfo);
4266 status = -nfs4_stat_to_errno(hdr.status);
4273 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
4275 struct xdr_stream xdr;
4276 struct compound_hdr hdr;
4279 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4280 status = decode_compound_hdr(&xdr, &hdr);
4282 status = decode_putfh(&xdr);
4284 status = decode_pathconf(&xdr, pathconf);
4291 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
4293 struct xdr_stream xdr;
4294 struct compound_hdr hdr;
4297 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4298 status = decode_compound_hdr(&xdr, &hdr);
4300 status = decode_putfh(&xdr);
4302 status = decode_statfs(&xdr, fsstat);
4307 * GETATTR_BITMAP request
4309 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
4311 struct xdr_stream xdr;
4312 struct compound_hdr hdr;
4315 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4316 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4318 if ((status = decode_putfh(&xdr)) != 0)
4320 status = decode_server_caps(&xdr, res);
4326 * Decode RENEW response
4328 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
4330 struct xdr_stream xdr;
4331 struct compound_hdr hdr;
4334 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4335 status = decode_compound_hdr(&xdr, &hdr);
4337 status = decode_renew(&xdr);
4342 * a SETCLIENTID request
4344 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
4345 struct nfs_client *clp)
4347 struct xdr_stream xdr;
4348 struct compound_hdr hdr;
4351 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4352 status = decode_compound_hdr(&xdr, &hdr);
4354 status = decode_setclientid(&xdr, clp);
4356 status = -nfs4_stat_to_errno(hdr.status);
4361 * a SETCLIENTID_CONFIRM request
4363 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4365 struct xdr_stream xdr;
4366 struct compound_hdr hdr;
4369 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4370 status = decode_compound_hdr(&xdr, &hdr);
4372 status = decode_setclientid_confirm(&xdr);
4374 status = decode_putrootfh(&xdr);
4376 status = decode_fsinfo(&xdr, fsinfo);
4378 status = -nfs4_stat_to_errno(hdr.status);
4383 * DELEGRETURN request
4385 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
4387 struct xdr_stream xdr;
4388 struct compound_hdr hdr;
4391 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4392 status = decode_compound_hdr(&xdr, &hdr);
4395 status = decode_putfh(&xdr);
4398 status = decode_delegreturn(&xdr);
4399 decode_getfattr(&xdr, res->fattr, res->server);
4405 * FS_LOCATIONS request
4407 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
4409 struct xdr_stream xdr;
4410 struct compound_hdr hdr;
4413 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4414 status = decode_compound_hdr(&xdr, &hdr);
4417 if ((status = decode_putfh(&xdr)) != 0)
4419 if ((status = decode_lookup(&xdr)) != 0)
4421 xdr_enter_page(&xdr, PAGE_SIZE);
4422 status = decode_getfattr(&xdr, &res->fattr, res->server);
4427 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
4429 uint32_t bitmap[2] = {0};
4434 return ERR_PTR(-EAGAIN);
4436 return ERR_PTR(-EBADCOOKIE);
4439 entry->prev_cookie = entry->cookie;
4440 p = xdr_decode_hyper(p, &entry->cookie);
4441 entry->len = ntohl(*p++);
4442 entry->name = (const char *) p;
4443 p += XDR_QUADLEN(entry->len);
4446 * In case the server doesn't return an inode number,
4447 * we fake one here. (We don't use inode number 0,
4448 * since glibc seems to choke on it...)
4452 len = ntohl(*p++); /* bitmap length */
4454 bitmap[0] = ntohl(*p++);
4456 bitmap[1] = ntohl(*p++);
4460 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4462 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4463 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4464 /* Ignore the return value of rdattr_error for now */
4468 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4469 xdr_decode_hyper(p, &entry->ino);
4470 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4471 xdr_decode_hyper(p, &entry->ino);
4475 entry->eof = !p[0] && p[1];
4480 * We need to translate between nfs status return values and
4481 * the local errno values which may not be the same.
4488 { NFS4ERR_PERM, EPERM },
4489 { NFS4ERR_NOENT, ENOENT },
4490 { NFS4ERR_IO, errno_NFSERR_IO },
4491 { NFS4ERR_NXIO, ENXIO },
4492 { NFS4ERR_ACCESS, EACCES },
4493 { NFS4ERR_EXIST, EEXIST },
4494 { NFS4ERR_XDEV, EXDEV },
4495 { NFS4ERR_NOTDIR, ENOTDIR },
4496 { NFS4ERR_ISDIR, EISDIR },
4497 { NFS4ERR_INVAL, EINVAL },
4498 { NFS4ERR_FBIG, EFBIG },
4499 { NFS4ERR_NOSPC, ENOSPC },
4500 { NFS4ERR_ROFS, EROFS },
4501 { NFS4ERR_MLINK, EMLINK },
4502 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4503 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4504 { NFS4ERR_DQUOT, EDQUOT },
4505 { NFS4ERR_STALE, ESTALE },
4506 { NFS4ERR_BADHANDLE, EBADHANDLE },
4507 { NFS4ERR_BADOWNER, EINVAL },
4508 { NFS4ERR_BADNAME, EINVAL },
4509 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4510 { NFS4ERR_NOTSUPP, ENOTSUPP },
4511 { NFS4ERR_TOOSMALL, ETOOSMALL },
4512 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4513 { NFS4ERR_BADTYPE, EBADTYPE },
4514 { NFS4ERR_LOCKED, EAGAIN },
4515 { NFS4ERR_RESOURCE, EREMOTEIO },
4516 { NFS4ERR_SYMLINK, ELOOP },
4517 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4518 { NFS4ERR_DEADLOCK, EDEADLK },
4519 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4520 * to be handled by a
4527 * Convert an NFS error code to a local one.
4528 * This one is used jointly by NFSv2 and NFSv3.
4531 nfs4_stat_to_errno(int stat)
4534 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4535 if (nfs_errtbl[i].stat == stat)
4536 return nfs_errtbl[i].errno;
4538 if (stat <= 10000 || stat > 10100) {
4539 /* The server is looney tunes. */
4540 return ESERVERFAULT;
4542 /* If we cannot translate the error, the recovery routines should
4544 * Note: remaining NFSv4 error codes have values > 10000, so should
4545 * not conflict with native Linux error codes.
4550 #define PROC(proc, argtype, restype) \
4551 [NFSPROC4_CLNT_##proc] = { \
4552 .p_proc = NFSPROC4_COMPOUND, \
4553 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4554 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4555 .p_arglen = NFS4_##argtype##_sz, \
4556 .p_replen = NFS4_##restype##_sz, \
4557 .p_statidx = NFSPROC4_CLNT_##proc, \
4561 struct rpc_procinfo nfs4_procedures[] = {
4562 PROC(READ, enc_read, dec_read),
4563 PROC(WRITE, enc_write, dec_write),
4564 PROC(COMMIT, enc_commit, dec_commit),
4565 PROC(OPEN, enc_open, dec_open),
4566 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4567 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4568 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4569 PROC(CLOSE, enc_close, dec_close),
4570 PROC(SETATTR, enc_setattr, dec_setattr),
4571 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4572 PROC(RENEW, enc_renew, dec_renew),
4573 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4574 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4575 PROC(LOCK, enc_lock, dec_lock),
4576 PROC(LOCKT, enc_lockt, dec_lockt),
4577 PROC(LOCKU, enc_locku, dec_locku),
4578 PROC(ACCESS, enc_access, dec_access),
4579 PROC(GETATTR, enc_getattr, dec_getattr),
4580 PROC(LOOKUP, enc_lookup, dec_lookup),
4581 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4582 PROC(REMOVE, enc_remove, dec_remove),
4583 PROC(RENAME, enc_rename, dec_rename),
4584 PROC(LINK, enc_link, dec_link),
4585 PROC(SYMLINK, enc_symlink, dec_symlink),
4586 PROC(CREATE, enc_create, dec_create),
4587 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4588 PROC(STATFS, enc_statfs, dec_statfs),
4589 PROC(READLINK, enc_readlink, dec_readlink),
4590 PROC(READDIR, enc_readdir, dec_readdir),
4591 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4592 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4593 PROC(GETACL, enc_getacl, dec_getacl),
4594 PROC(SETACL, enc_setacl, dec_setacl),
4595 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
4598 struct rpc_version nfs_version4 = {
4600 .nrprocs = ARRAY_SIZE(nfs4_procedures),
4601 .procs = nfs4_procedures