1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.h>
45 #include <linux/in.h>
46 #include <linux/pagemap.h>
47 #include <linux/proc_fs.h>
48 #include <linux/kdev_t.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/nfs.h>
51 #include <linux/nfs4.h>
52 #include <linux/nfs_fs.h>
53 #include <linux/nfs_idmap.h>
54
55 #define NFSDBG_FACILITY NFSDBG_XDR
56
57 /* Mapping from NFS error code to "errno" error code. */
58 #define errno_NFSERR_IO EIO
59
60 static int nfs_stat_to_errno(int);
61
62 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
63 #ifdef DEBUG
64 #define NFS4_MAXTAGLEN 20
65 #else
66 #define NFS4_MAXTAGLEN 0
67 #endif
68
69 /* lock,open owner id:
70 * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT >> 2)
71 */
72 #define owner_id_maxsz (1 + 1)
73 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
74 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
75 #define op_encode_hdr_maxsz (1)
76 #define op_decode_hdr_maxsz (2)
77 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
78 (NFS4_FHSIZE >> 2))
79 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
80 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
81 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
82 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
83 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
84 ((3+NFS4_FHSIZE) >> 2))
85 #define encode_getattr_maxsz (op_encode_hdr_maxsz + 3)
86 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
87 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
88 #define nfs4_fattr_bitmap_maxsz (36 + 2 * nfs4_name_maxsz)
89 #define decode_getattr_maxsz (op_decode_hdr_maxsz + 3 + \
90 nfs4_fattr_bitmap_maxsz)
91 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
92 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
93 #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
94 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
95 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
96 #define decode_renew_maxsz (op_decode_hdr_maxsz)
97 #define encode_setclientid_maxsz \
98 (op_encode_hdr_maxsz + \
99 4 /*server->ip_addr*/ + \
100 1 /*Netid*/ + \
101 6 /*uaddr*/ + \
102 6 + (NFS4_VERIFIER_SIZE >> 2))
103 #define decode_setclientid_maxsz \
104 (op_decode_hdr_maxsz + \
105 2 + \
106 1024) /* large value for CLID_INUSE */
107 #define encode_setclientid_confirm_maxsz \
108 (op_encode_hdr_maxsz + \
109 3 + (NFS4_VERIFIER_SIZE >> 2))
110 #define decode_setclientid_confirm_maxsz \
111 (op_decode_hdr_maxsz)
112 #define encode_lookup_maxsz (op_encode_hdr_maxsz + \
113 1 + ((3 + NFS4_FHSIZE) >> 2))
114 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
115 nfs4_name_maxsz)
116 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
117 2 * nfs4_name_maxsz)
118 #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
119 #define encode_link_maxsz (op_encode_hdr_maxsz + \
120 nfs4_name_maxsz)
121 #define decode_link_maxsz (op_decode_hdr_maxsz + 5)
122 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
123 1 + nfs4_name_maxsz + \
124 nfs4_path_maxsz + \
125 nfs4_fattr_bitmap_maxsz)
126 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
127 #define encode_create_maxsz (op_encode_hdr_maxsz + \
128 2 + nfs4_name_maxsz + \
129 nfs4_fattr_bitmap_maxsz)
130 #define decode_create_maxsz (op_decode_hdr_maxsz + 8)
131 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
132 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
133 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
134 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
135 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
136 encode_putfh_maxsz + \
137 op_encode_hdr_maxsz + 7)
138 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
139 decode_putfh_maxsz + \
140 op_decode_hdr_maxsz + 2)
141 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
142 encode_putfh_maxsz + \
143 op_encode_hdr_maxsz)
144 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
145 decode_putfh_maxsz + \
146 op_decode_hdr_maxsz)
147 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
148 encode_putfh_maxsz + \
149 op_encode_hdr_maxsz + 9)
150 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
151 decode_putfh_maxsz + \
152 op_decode_hdr_maxsz + 2)
153 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
154 encode_putfh_maxsz + \
155 op_encode_hdr_maxsz + 8)
156 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
157 decode_putfh_maxsz + \
158 op_decode_hdr_maxsz + 4)
159 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
160 encode_putfh_maxsz + \
161 op_encode_hdr_maxsz + 3)
162 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
163 decode_putfh_maxsz + \
164 op_decode_hdr_maxsz + 2)
165 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
166 encode_putfh_maxsz + \
167 op_encode_hdr_maxsz + \
168 13 + 3 + 2 + 64 + \
169 encode_getattr_maxsz + \
170 encode_getfh_maxsz)
171 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
172 decode_putfh_maxsz + \
173 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
174 decode_getattr_maxsz + \
175 decode_getfh_maxsz)
176 #define NFS4_enc_open_confirm_sz \
177 (compound_encode_hdr_maxsz + \
178 encode_putfh_maxsz + \
179 op_encode_hdr_maxsz + 5)
180 #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
181 decode_putfh_maxsz + \
182 op_decode_hdr_maxsz + 4)
183 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
184 encode_putfh_maxsz + \
185 op_encode_hdr_maxsz + \
186 11)
187 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
188 decode_putfh_maxsz + \
189 op_decode_hdr_maxsz + \
190 4 + 5 + 2 + 3)
191 #define NFS4_enc_open_downgrade_sz \
192 (compound_encode_hdr_maxsz + \
193 encode_putfh_maxsz + \
194 op_encode_hdr_maxsz + 7)
195 #define NFS4_dec_open_downgrade_sz \
196 (compound_decode_hdr_maxsz + \
197 decode_putfh_maxsz + \
198 op_decode_hdr_maxsz + 4)
199 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
200 encode_putfh_maxsz + \
201 op_encode_hdr_maxsz + 5)
202 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
203 decode_putfh_maxsz + \
204 op_decode_hdr_maxsz + 4)
205 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
206 encode_putfh_maxsz + \
207 op_encode_hdr_maxsz + 4 + \
208 nfs4_fattr_bitmap_maxsz + \
209 encode_getattr_maxsz)
210 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
211 decode_putfh_maxsz + \
212 op_decode_hdr_maxsz + 3)
213 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
214 encode_putfh_maxsz + \
215 encode_fsinfo_maxsz)
216 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
217 decode_putfh_maxsz + \
218 decode_fsinfo_maxsz)
219 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
220 encode_renew_maxsz)
221 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
222 decode_renew_maxsz)
223 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
224 encode_setclientid_maxsz)
225 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
226 decode_setclientid_maxsz)
227 #define NFS4_enc_setclientid_confirm_sz \
228 (compound_encode_hdr_maxsz + \
229 encode_setclientid_confirm_maxsz + \
230 encode_putrootfh_maxsz + \
231 encode_fsinfo_maxsz)
232 #define NFS4_dec_setclientid_confirm_sz \
233 (compound_decode_hdr_maxsz + \
234 decode_setclientid_confirm_maxsz + \
235 decode_putrootfh_maxsz + \
236 decode_fsinfo_maxsz)
237 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
238 encode_putfh_maxsz + \
239 encode_getattr_maxsz + \
240 op_encode_hdr_maxsz + \
241 1 + 1 + 2 + 2 + \
242 1 + 4 + 1 + 2 + \
243 owner_id_maxsz)
244 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
245 decode_putfh_maxsz + \
246 decode_getattr_maxsz + \
247 op_decode_hdr_maxsz + \
248 2 + 2 + 1 + 2 + \
249 owner_id_maxsz)
250 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
251 encode_putfh_maxsz + \
252 encode_getattr_maxsz + \
253 op_encode_hdr_maxsz + \
254 1 + 2 + 2 + 2 + \
255 owner_id_maxsz)
256 #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
257 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
258 encode_putfh_maxsz + \
259 encode_getattr_maxsz + \
260 op_encode_hdr_maxsz + \
261 1 + 1 + 4 + 2 + 2)
262 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
263 decode_putfh_maxsz + \
264 decode_getattr_maxsz + \
265 op_decode_hdr_maxsz + 4)
266 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
267 encode_putfh_maxsz + \
268 op_encode_hdr_maxsz + 1)
269 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
270 decode_putfh_maxsz + \
271 op_decode_hdr_maxsz + 2)
272 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
273 encode_putfh_maxsz + \
274 encode_getattr_maxsz)
275 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
276 decode_putfh_maxsz + \
277 decode_getattr_maxsz)
278 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
279 encode_putfh_maxsz + \
280 encode_lookup_maxsz + \
281 encode_getattr_maxsz + \
282 encode_getfh_maxsz)
283 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
284 decode_putfh_maxsz + \
285 op_decode_hdr_maxsz + \
286 decode_getattr_maxsz + \
287 decode_getfh_maxsz)
288 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
289 encode_putrootfh_maxsz + \
290 encode_getattr_maxsz + \
291 encode_getfh_maxsz)
292 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
293 decode_putrootfh_maxsz + \
294 decode_getattr_maxsz + \
295 decode_getfh_maxsz)
296 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
297 encode_putfh_maxsz + \
298 encode_remove_maxsz)
299 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
300 decode_putfh_maxsz + \
301 op_decode_hdr_maxsz + 5)
302 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
303 encode_putfh_maxsz + \
304 encode_savefh_maxsz + \
305 encode_putfh_maxsz + \
306 encode_rename_maxsz)
307 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
308 decode_putfh_maxsz + \
309 decode_savefh_maxsz + \
310 decode_putfh_maxsz + \
311 decode_rename_maxsz)
312 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
313 encode_putfh_maxsz + \
314 encode_savefh_maxsz + \
315 encode_putfh_maxsz + \
316 encode_link_maxsz)
317 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
318 decode_putfh_maxsz + \
319 decode_savefh_maxsz + \
320 decode_putfh_maxsz + \
321 decode_link_maxsz)
322 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
323 encode_putfh_maxsz + \
324 encode_symlink_maxsz + \
325 encode_getattr_maxsz + \
326 encode_getfh_maxsz)
327 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
328 decode_putfh_maxsz + \
329 decode_symlink_maxsz + \
330 decode_getattr_maxsz + \
331 decode_getfh_maxsz)
332 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
333 encode_putfh_maxsz + \
334 encode_create_maxsz + \
335 encode_getattr_maxsz + \
336 encode_getfh_maxsz)
337 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
338 decode_putfh_maxsz + \
339 decode_create_maxsz + \
340 decode_getattr_maxsz + \
341 decode_getfh_maxsz)
342 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
343 encode_putfh_maxsz + \
344 encode_getattr_maxsz)
345 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
346 decode_putfh_maxsz + \
347 decode_getattr_maxsz)
348 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
349 encode_putfh_maxsz + \
350 encode_getattr_maxsz)
351 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
352 decode_putfh_maxsz + \
353 op_decode_hdr_maxsz + 12)
354 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
355 encode_getattr_maxsz)
356 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
357 decode_getattr_maxsz)
358 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
359 encode_putfh_maxsz + \
360 encode_delegreturn_maxsz)
361 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
362 decode_delegreturn_maxsz)
363
364 static struct {
365 unsigned int mode;
366 unsigned int nfs2type;
367 } nfs_type2fmt[] = {
368 { 0, NFNON },
369 { S_IFREG, NFREG },
370 { S_IFDIR, NFDIR },
371 { S_IFBLK, NFBLK },
372 { S_IFCHR, NFCHR },
373 { S_IFLNK, NFLNK },
374 { S_IFSOCK, NFSOCK },
375 { S_IFIFO, NFFIFO },
376 { 0, NFNON },
377 { 0, NFNON },
378 };
379
380 struct compound_hdr {
381 int32_t status;
382 uint32_t nops;
383 uint32_t taglen;
384 char * tag;
385 };
386
387 /*
388 * START OF "GENERIC" ENCODE ROUTINES.
389 * These may look a little ugly since they are imported from a "generic"
390 * set of XDR encode/decode routines which are intended to be shared by
391 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
392 *
393 * If the pain of reading these is too great, it should be a straightforward
394 * task to translate them into Linux-specific versions which are more
395 * consistent with the style used in NFSv2/v3...
396 */
397 #define WRITE32(n) *p++ = htonl(n)
398 #define WRITE64(n) do { \
399 *p++ = htonl((uint32_t)((n) >> 32)); \
400 *p++ = htonl((uint32_t)(n)); \
401 } while (0)
402 #define WRITEMEM(ptr,nbytes) do { \
403 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
404 } while (0)
405
406 #define RESERVE_SPACE(nbytes) do { \
407 p = xdr_reserve_space(xdr, nbytes); \
408 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
409 BUG_ON(!p); \
410 } while (0)
411
412 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
413 {
414 uint32_t *p;
415
416 p = xdr_reserve_space(xdr, 4 + len);
417 BUG_ON(p == NULL);
418 xdr_encode_opaque(p, str, len);
419 }
420
421 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
422 {
423 uint32_t *p;
424
425 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
426 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
427 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
428 WRITE32(hdr->taglen);
429 WRITEMEM(hdr->tag, hdr->taglen);
430 WRITE32(NFS4_MINOR_VERSION);
431 WRITE32(hdr->nops);
432 return 0;
433 }
434
435 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
436 {
437 uint32_t *p;
438
439 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
440 BUG_ON(p == NULL);
441 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
442 }
443
444 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
445 {
446 char owner_name[IDMAP_NAMESZ];
447 char owner_group[IDMAP_NAMESZ];
448 int owner_namelen = 0;
449 int owner_grouplen = 0;
450 uint32_t *p;
451 uint32_t *q;
452 int len;
453 uint32_t bmval0 = 0;
454 uint32_t bmval1 = 0;
455 int status;
456
457 /*
458 * We reserve enough space to write the entire attribute buffer at once.
459 * In the worst-case, this would be
460 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
461 * = 36 bytes, plus any contribution from variable-length fields
462 * such as owner/group/acl's.
463 */
464 len = 16;
465
466 /* Sigh */
467 if (iap->ia_valid & ATTR_SIZE)
468 len += 8;
469 if (iap->ia_valid & ATTR_MODE)
470 len += 4;
471 if (iap->ia_valid & ATTR_UID) {
472 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
473 if (owner_namelen < 0) {
474 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
475 iap->ia_uid);
476 /* XXX */
477 strcpy(owner_name, "nobody");
478 owner_namelen = sizeof("nobody") - 1;
479 /* goto out; */
480 }
481 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
482 }
483 if (iap->ia_valid & ATTR_GID) {
484 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
485 if (owner_grouplen < 0) {
486 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
487 iap->ia_gid);
488 strcpy(owner_group, "nobody");
489 owner_grouplen = sizeof("nobody") - 1;
490 /* goto out; */
491 }
492 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
493 }
494 if (iap->ia_valid & ATTR_ATIME_SET)
495 len += 16;
496 else if (iap->ia_valid & ATTR_ATIME)
497 len += 4;
498 if (iap->ia_valid & ATTR_MTIME_SET)
499 len += 16;
500 else if (iap->ia_valid & ATTR_MTIME)
501 len += 4;
502 RESERVE_SPACE(len);
503
504 /*
505 * We write the bitmap length now, but leave the bitmap and the attribute
506 * buffer length to be backfilled at the end of this routine.
507 */
508 WRITE32(2);
509 q = p;
510 p += 3;
511
512 if (iap->ia_valid & ATTR_SIZE) {
513 bmval0 |= FATTR4_WORD0_SIZE;
514 WRITE64(iap->ia_size);
515 }
516 if (iap->ia_valid & ATTR_MODE) {
517 bmval1 |= FATTR4_WORD1_MODE;
518 WRITE32(iap->ia_mode);
519 }
520 if (iap->ia_valid & ATTR_UID) {
521 bmval1 |= FATTR4_WORD1_OWNER;
522 WRITE32(owner_namelen);
523 WRITEMEM(owner_name, owner_namelen);
524 }
525 if (iap->ia_valid & ATTR_GID) {
526 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
527 WRITE32(owner_grouplen);
528 WRITEMEM(owner_group, owner_grouplen);
529 }
530 if (iap->ia_valid & ATTR_ATIME_SET) {
531 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
532 WRITE32(NFS4_SET_TO_CLIENT_TIME);
533 WRITE32(0);
534 WRITE32(iap->ia_mtime.tv_sec);
535 WRITE32(iap->ia_mtime.tv_nsec);
536 }
537 else if (iap->ia_valid & ATTR_ATIME) {
538 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
539 WRITE32(NFS4_SET_TO_SERVER_TIME);
540 }
541 if (iap->ia_valid & ATTR_MTIME_SET) {
542 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
543 WRITE32(NFS4_SET_TO_CLIENT_TIME);
544 WRITE32(0);
545 WRITE32(iap->ia_mtime.tv_sec);
546 WRITE32(iap->ia_mtime.tv_nsec);
547 }
548 else if (iap->ia_valid & ATTR_MTIME) {
549 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
550 WRITE32(NFS4_SET_TO_SERVER_TIME);
551 }
552
553 /*
554 * Now we backfill the bitmap and the attribute buffer length.
555 */
556 if (len != ((char *)p - (char *)q) + 4) {
557 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
558 len, ((char *)p - (char *)q) + 4);
559 BUG();
560 }
561 len = (char *)p - (char *)q - 12;
562 *q++ = htonl(bmval0);
563 *q++ = htonl(bmval1);
564 *q++ = htonl(len);
565
566 status = 0;
567 /* out: */
568 return status;
569 }
570
571 static int encode_access(struct xdr_stream *xdr, u32 access)
572 {
573 uint32_t *p;
574
575 RESERVE_SPACE(8);
576 WRITE32(OP_ACCESS);
577 WRITE32(access);
578
579 return 0;
580 }
581
582 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
583 {
584 uint32_t *p;
585
586 RESERVE_SPACE(8+sizeof(arg->stateid.data));
587 WRITE32(OP_CLOSE);
588 WRITE32(arg->seqid);
589 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
590
591 return 0;
592 }
593
594 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
595 {
596 uint32_t *p;
597
598 RESERVE_SPACE(16);
599 WRITE32(OP_COMMIT);
600 WRITE64(args->offset);
601 WRITE32(args->count);
602
603 return 0;
604 }
605
606 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
607 {
608 uint32_t *p;
609
610 RESERVE_SPACE(8);
611 WRITE32(OP_CREATE);
612 WRITE32(create->ftype);
613
614 switch (create->ftype) {
615 case NF4LNK:
616 RESERVE_SPACE(4 + create->u.symlink->len);
617 WRITE32(create->u.symlink->len);
618 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
619 break;
620
621 case NF4BLK: case NF4CHR:
622 RESERVE_SPACE(8);
623 WRITE32(create->u.device.specdata1);
624 WRITE32(create->u.device.specdata2);
625 break;
626
627 default:
628 break;
629 }
630
631 RESERVE_SPACE(4 + create->name->len);
632 WRITE32(create->name->len);
633 WRITEMEM(create->name->name, create->name->len);
634
635 return encode_attrs(xdr, create->attrs, create->server);
636 }
637
638 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
639 {
640 uint32_t *p;
641
642 RESERVE_SPACE(12);
643 WRITE32(OP_GETATTR);
644 WRITE32(1);
645 WRITE32(bitmap);
646 return 0;
647 }
648
649 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
650 {
651 uint32_t *p;
652
653 RESERVE_SPACE(16);
654 WRITE32(OP_GETATTR);
655 WRITE32(2);
656 WRITE32(bm0);
657 WRITE32(bm1);
658 return 0;
659 }
660
661 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
662 {
663 extern u32 nfs4_fattr_bitmap[];
664
665 return encode_getattr_two(xdr,
666 bitmask[0] & nfs4_fattr_bitmap[0],
667 bitmask[1] & nfs4_fattr_bitmap[1]);
668 }
669
670 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
671 {
672 extern u32 nfs4_fsinfo_bitmap[];
673
674 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
675 bitmask[1] & nfs4_fsinfo_bitmap[1]);
676 }
677
678 static int encode_getfh(struct xdr_stream *xdr)
679 {
680 uint32_t *p;
681
682 RESERVE_SPACE(4);
683 WRITE32(OP_GETFH);
684
685 return 0;
686 }
687
688 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
689 {
690 uint32_t *p;
691
692 RESERVE_SPACE(8 + name->len);
693 WRITE32(OP_LINK);
694 WRITE32(name->len);
695 WRITEMEM(name->name, name->len);
696
697 return 0;
698 }
699
700 /*
701 * opcode,type,reclaim,offset,length,new_lock_owner = 32
702 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
703 */
704 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
705 {
706 uint32_t *p;
707 struct nfs_lock_opargs *opargs = arg->u.lock;
708
709 RESERVE_SPACE(32);
710 WRITE32(OP_LOCK);
711 WRITE32(arg->type);
712 WRITE32(opargs->reclaim);
713 WRITE64(arg->offset);
714 WRITE64(arg->length);
715 WRITE32(opargs->new_lock_owner);
716 if (opargs->new_lock_owner){
717 struct nfs_open_to_lock *ol = opargs->u.open_lock;
718
719 RESERVE_SPACE(40);
720 WRITE32(ol->open_seqid);
721 WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
722 WRITE32(ol->lock_seqid);
723 WRITE64(ol->lock_owner.clientid);
724 WRITE32(4);
725 WRITE32(ol->lock_owner.id);
726 }
727 else {
728 struct nfs_exist_lock *el = opargs->u.exist_lock;
729
730 RESERVE_SPACE(20);
731 WRITEMEM(&el->stateid, sizeof(el->stateid));
732 WRITE32(el->seqid);
733 }
734
735 return 0;
736 }
737
738 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
739 {
740 uint32_t *p;
741 struct nfs_lowner *opargs = arg->u.lockt;
742
743 RESERVE_SPACE(40);
744 WRITE32(OP_LOCKT);
745 WRITE32(arg->type);
746 WRITE64(arg->offset);
747 WRITE64(arg->length);
748 WRITE64(opargs->clientid);
749 WRITE32(4);
750 WRITE32(opargs->id);
751
752 return 0;
753 }
754
755 static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
756 {
757 uint32_t *p;
758 struct nfs_locku_opargs *opargs = arg->u.locku;
759
760 RESERVE_SPACE(44);
761 WRITE32(OP_LOCKU);
762 WRITE32(arg->type);
763 WRITE32(opargs->seqid);
764 WRITEMEM(&opargs->stateid, sizeof(opargs->stateid));
765 WRITE64(arg->offset);
766 WRITE64(arg->length);
767
768 return 0;
769 }
770
771 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
772 {
773 int len = name->len;
774 uint32_t *p;
775
776 RESERVE_SPACE(8 + len);
777 WRITE32(OP_LOOKUP);
778 WRITE32(len);
779 WRITEMEM(name->name, len);
780
781 return 0;
782 }
783
784 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
785 {
786 uint32_t *p;
787
788 RESERVE_SPACE(8);
789 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
790 case FMODE_READ:
791 WRITE32(NFS4_SHARE_ACCESS_READ);
792 break;
793 case FMODE_WRITE:
794 WRITE32(NFS4_SHARE_ACCESS_WRITE);
795 break;
796 case FMODE_READ|FMODE_WRITE:
797 WRITE32(NFS4_SHARE_ACCESS_BOTH);
798 break;
799 default:
800 BUG();
801 }
802 WRITE32(0); /* for linux, share_deny = 0 always */
803 }
804
805 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
806 {
807 uint32_t *p;
808 /*
809 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
810 * owner 4 = 32
811 */
812 RESERVE_SPACE(8);
813 WRITE32(OP_OPEN);
814 WRITE32(arg->seqid);
815 encode_share_access(xdr, arg->open_flags);
816 RESERVE_SPACE(16);
817 WRITE64(arg->clientid);
818 WRITE32(4);
819 WRITE32(arg->id);
820 }
821
822 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
823 {
824 uint32_t *p;
825
826 RESERVE_SPACE(4);
827 switch(arg->open_flags & O_EXCL) {
828 case 0:
829 WRITE32(NFS4_CREATE_UNCHECKED);
830 encode_attrs(xdr, arg->u.attrs, arg->server);
831 break;
832 default:
833 WRITE32(NFS4_CREATE_EXCLUSIVE);
834 encode_nfs4_verifier(xdr, &arg->u.verifier);
835 }
836 }
837
838 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
839 {
840 uint32_t *p;
841
842 RESERVE_SPACE(4);
843 switch (arg->open_flags & O_CREAT) {
844 case 0:
845 WRITE32(NFS4_OPEN_NOCREATE);
846 break;
847 default:
848 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
849 WRITE32(NFS4_OPEN_CREATE);
850 encode_createmode(xdr, arg);
851 }
852 }
853
854 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
855 {
856 uint32_t *p;
857
858 RESERVE_SPACE(4);
859 switch (delegation_type) {
860 case 0:
861 WRITE32(NFS4_OPEN_DELEGATE_NONE);
862 break;
863 case FMODE_READ:
864 WRITE32(NFS4_OPEN_DELEGATE_READ);
865 break;
866 case FMODE_WRITE|FMODE_READ:
867 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
868 break;
869 default:
870 BUG();
871 }
872 }
873
874 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
875 {
876 uint32_t *p;
877
878 RESERVE_SPACE(4);
879 WRITE32(NFS4_OPEN_CLAIM_NULL);
880 encode_string(xdr, name->len, name->name);
881 }
882
883 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
884 {
885 uint32_t *p;
886
887 RESERVE_SPACE(4);
888 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
889 encode_delegation_type(xdr, type);
890 }
891
892 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
893 {
894 uint32_t *p;
895
896 RESERVE_SPACE(4+sizeof(stateid->data));
897 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
898 WRITEMEM(stateid->data, sizeof(stateid->data));
899 encode_string(xdr, name->len, name->name);
900 }
901
902 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
903 {
904 encode_openhdr(xdr, arg);
905 encode_opentype(xdr, arg);
906 switch (arg->claim) {
907 case NFS4_OPEN_CLAIM_NULL:
908 encode_claim_null(xdr, arg->name);
909 break;
910 case NFS4_OPEN_CLAIM_PREVIOUS:
911 encode_claim_previous(xdr, arg->u.delegation_type);
912 break;
913 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
914 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
915 break;
916 default:
917 BUG();
918 }
919 return 0;
920 }
921
922 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
923 {
924 uint32_t *p;
925
926 RESERVE_SPACE(8+sizeof(arg->stateid.data));
927 WRITE32(OP_OPEN_CONFIRM);
928 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
929 WRITE32(arg->seqid);
930
931 return 0;
932 }
933
934 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
935 {
936 uint32_t *p;
937
938 RESERVE_SPACE(8+sizeof(arg->stateid.data));
939 WRITE32(OP_OPEN_DOWNGRADE);
940 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
941 WRITE32(arg->seqid);
942 encode_share_access(xdr, arg->open_flags);
943 return 0;
944 }
945
946 static int
947 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
948 {
949 int len = fh->size;
950 uint32_t *p;
951
952 RESERVE_SPACE(8 + len);
953 WRITE32(OP_PUTFH);
954 WRITE32(len);
955 WRITEMEM(fh->data, len);
956
957 return 0;
958 }
959
960 static int encode_putrootfh(struct xdr_stream *xdr)
961 {
962 uint32_t *p;
963
964 RESERVE_SPACE(4);
965 WRITE32(OP_PUTROOTFH);
966
967 return 0;
968 }
969
970 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
971 {
972 extern nfs4_stateid zero_stateid;
973 nfs4_stateid stateid;
974 uint32_t *p;
975
976 RESERVE_SPACE(16);
977 if (ctx->state != NULL) {
978 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
979 WRITEMEM(stateid.data, sizeof(stateid.data));
980 } else
981 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
982 }
983
984 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
985 {
986 uint32_t *p;
987
988 RESERVE_SPACE(4);
989 WRITE32(OP_READ);
990
991 encode_stateid(xdr, args->context);
992
993 RESERVE_SPACE(12);
994 WRITE64(args->offset);
995 WRITE32(args->count);
996
997 return 0;
998 }
999
1000 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1001 {
1002 struct rpc_auth *auth = req->rq_task->tk_auth;
1003 int replen;
1004 uint32_t *p;
1005
1006 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1007 WRITE32(OP_READDIR);
1008 WRITE64(readdir->cookie);
1009 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1010 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1011 WRITE32(readdir->count);
1012 WRITE32(2);
1013 WRITE32(FATTR4_WORD0_FILEID);
1014 WRITE32(0);
1015
1016 /* set up reply kvec
1017 * toplevel_status + taglen + rescount + OP_PUTFH + status
1018 * + OP_READDIR + status + verifer(2) = 9
1019 */
1020 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1021 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1022 readdir->pgbase, readdir->count);
1023
1024 return 0;
1025 }
1026
1027 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1028 {
1029 struct rpc_auth *auth = req->rq_task->tk_auth;
1030 unsigned int replen;
1031 uint32_t *p;
1032
1033 RESERVE_SPACE(4);
1034 WRITE32(OP_READLINK);
1035
1036 /* set up reply kvec
1037 * toplevel_status + taglen + rescount + OP_PUTFH + status
1038 * + OP_READLINK + status + string length = 8
1039 */
1040 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1041 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1042 readlink->pgbase, readlink->pglen);
1043
1044 return 0;
1045 }
1046
1047 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1048 {
1049 uint32_t *p;
1050
1051 RESERVE_SPACE(8 + name->len);
1052 WRITE32(OP_REMOVE);
1053 WRITE32(name->len);
1054 WRITEMEM(name->name, name->len);
1055
1056 return 0;
1057 }
1058
1059 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1060 {
1061 uint32_t *p;
1062
1063 RESERVE_SPACE(8 + oldname->len);
1064 WRITE32(OP_RENAME);
1065 WRITE32(oldname->len);
1066 WRITEMEM(oldname->name, oldname->len);
1067
1068 RESERVE_SPACE(4 + newname->len);
1069 WRITE32(newname->len);
1070 WRITEMEM(newname->name, newname->len);
1071
1072 return 0;
1073 }
1074
1075 static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1076 {
1077 uint32_t *p;
1078
1079 RESERVE_SPACE(12);
1080 WRITE32(OP_RENEW);
1081 WRITE64(client_stateid->cl_clientid);
1082
1083 return 0;
1084 }
1085
1086 static int
1087 encode_savefh(struct xdr_stream *xdr)
1088 {
1089 uint32_t *p;
1090
1091 RESERVE_SPACE(4);
1092 WRITE32(OP_SAVEFH);
1093
1094 return 0;
1095 }
1096
1097 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1098 {
1099 int status;
1100 uint32_t *p;
1101
1102 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1103 WRITE32(OP_SETATTR);
1104 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1105
1106 if ((status = encode_attrs(xdr, arg->iap, server)))
1107 return status;
1108
1109 return 0;
1110 }
1111
1112 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1113 {
1114 uint32_t *p;
1115
1116 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1117 WRITE32(OP_SETCLIENTID);
1118 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1119
1120 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1121 RESERVE_SPACE(4);
1122 WRITE32(setclientid->sc_prog);
1123 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1124 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1125 RESERVE_SPACE(4);
1126 WRITE32(setclientid->sc_cb_ident);
1127
1128 return 0;
1129 }
1130
1131 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1132 {
1133 uint32_t *p;
1134
1135 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1136 WRITE32(OP_SETCLIENTID_CONFIRM);
1137 WRITE64(client_state->cl_clientid);
1138 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1139
1140 return 0;
1141 }
1142
1143 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1144 {
1145 uint32_t *p;
1146
1147 RESERVE_SPACE(4);
1148 WRITE32(OP_WRITE);
1149
1150 encode_stateid(xdr, args->context);
1151
1152 RESERVE_SPACE(16);
1153 WRITE64(args->offset);
1154 WRITE32(args->stable);
1155 WRITE32(args->count);
1156
1157 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1158
1159 return 0;
1160 }
1161
1162 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1163 {
1164 uint32_t *p;
1165
1166 RESERVE_SPACE(20);
1167
1168 WRITE32(OP_DELEGRETURN);
1169 WRITEMEM(stateid->data, sizeof(stateid->data));
1170 return 0;
1171
1172 }
1173 /*
1174 * END OF "GENERIC" ENCODE ROUTINES.
1175 */
1176
1177 /*
1178 * Encode an ACCESS request
1179 */
1180 static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1181 {
1182 struct xdr_stream xdr;
1183 struct compound_hdr hdr = {
1184 .nops = 2,
1185 };
1186 int status;
1187
1188 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1189 encode_compound_hdr(&xdr, &hdr);
1190 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1191 status = encode_access(&xdr, args->access);
1192 return status;
1193 }
1194
1195 /*
1196 * Encode LOOKUP request
1197 */
1198 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1199 {
1200 struct xdr_stream xdr;
1201 struct compound_hdr hdr = {
1202 .nops = 4,
1203 };
1204 int status;
1205
1206 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1207 encode_compound_hdr(&xdr, &hdr);
1208 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1209 goto out;
1210 if ((status = encode_lookup(&xdr, args->name)) != 0)
1211 goto out;
1212 if ((status = encode_getfh(&xdr)) != 0)
1213 goto out;
1214 status = encode_getfattr(&xdr, args->bitmask);
1215 out:
1216 return status;
1217 }
1218
1219 /*
1220 * Encode LOOKUP_ROOT request
1221 */
1222 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1223 {
1224 struct xdr_stream xdr;
1225 struct compound_hdr hdr = {
1226 .nops = 3,
1227 };
1228 int status;
1229
1230 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1231 encode_compound_hdr(&xdr, &hdr);
1232 if ((status = encode_putrootfh(&xdr)) != 0)
1233 goto out;
1234 if ((status = encode_getfh(&xdr)) == 0)
1235 status = encode_getfattr(&xdr, args->bitmask);
1236 out:
1237 return status;
1238 }
1239
1240 /*
1241 * Encode REMOVE request
1242 */
1243 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1244 {
1245 struct xdr_stream xdr;
1246 struct compound_hdr hdr = {
1247 .nops = 2,
1248 };
1249 int status;
1250
1251 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1252 encode_compound_hdr(&xdr, &hdr);
1253 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1254 status = encode_remove(&xdr, args->name);
1255 return status;
1256 }
1257
1258 /*
1259 * Encode RENAME request
1260 */
1261 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1262 {
1263 struct xdr_stream xdr;
1264 struct compound_hdr hdr = {
1265 .nops = 4,
1266 };
1267 int status;
1268
1269 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1270 encode_compound_hdr(&xdr, &hdr);
1271 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1272 goto out;
1273 if ((status = encode_savefh(&xdr)) != 0)
1274 goto out;
1275 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1276 goto out;
1277 status = encode_rename(&xdr, args->old_name, args->new_name);
1278 out:
1279 return status;
1280 }
1281
1282 /*
1283 * Encode LINK request
1284 */
1285 static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1286 {
1287 struct xdr_stream xdr;
1288 struct compound_hdr hdr = {
1289 .nops = 4,
1290 };
1291 int status;
1292
1293 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1294 encode_compound_hdr(&xdr, &hdr);
1295 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1296 goto out;
1297 if ((status = encode_savefh(&xdr)) != 0)
1298 goto out;
1299 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1300 goto out;
1301 status = encode_link(&xdr, args->name);
1302 out:
1303 return status;
1304 }
1305
1306 /*
1307 * Encode CREATE request
1308 */
1309 static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1310 {
1311 struct xdr_stream xdr;
1312 struct compound_hdr hdr = {
1313 .nops = 4,
1314 };
1315 int status;
1316
1317 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1318 encode_compound_hdr(&xdr, &hdr);
1319 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1320 goto out;
1321 if ((status = encode_create(&xdr, args)) != 0)
1322 goto out;
1323 if ((status = encode_getfh(&xdr)) != 0)
1324 goto out;
1325 status = encode_getfattr(&xdr, args->bitmask);
1326 out:
1327 return status;
1328 }
1329
1330 /*
1331 * Encode SYMLINK request
1332 */
1333 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1334 {
1335 return nfs4_xdr_enc_create(req, p, args);
1336 }
1337
1338 /*
1339 * Encode GETATTR request
1340 */
1341 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1342 {
1343 struct xdr_stream xdr;
1344 struct compound_hdr hdr = {
1345 .nops = 2,
1346 };
1347 int status;
1348
1349 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1350 encode_compound_hdr(&xdr, &hdr);
1351 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1352 status = encode_getfattr(&xdr, args->bitmask);
1353 return status;
1354 }
1355
1356 /*
1357 * Encode a CLOSE request
1358 */
1359 static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1360 {
1361 struct xdr_stream xdr;
1362 struct compound_hdr hdr = {
1363 .nops = 2,
1364 };
1365 int status;
1366
1367 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1368 encode_compound_hdr(&xdr, &hdr);
1369 status = encode_putfh(&xdr, args->fh);
1370 if(status)
1371 goto out;
1372 status = encode_close(&xdr, args);
1373 out:
1374 return status;
1375 }
1376
1377 /*
1378 * Encode an OPEN request
1379 */
1380 static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1381 {
1382 struct xdr_stream xdr;
1383 struct compound_hdr hdr = {
1384 .nops = 4,
1385 };
1386 int status;
1387
1388 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1389 encode_compound_hdr(&xdr, &hdr);
1390 status = encode_putfh(&xdr, args->fh);
1391 if (status)
1392 goto out;
1393 status = encode_open(&xdr, args);
1394 if (status)
1395 goto out;
1396 status = encode_getfh(&xdr);
1397 if (status)
1398 goto out;
1399 status = encode_getfattr(&xdr, args->bitmask);
1400 out:
1401 return status;
1402 }
1403
1404 /*
1405 * Encode an OPEN_CONFIRM request
1406 */
1407 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1408 {
1409 struct xdr_stream xdr;
1410 struct compound_hdr hdr = {
1411 .nops = 2,
1412 };
1413 int status;
1414
1415 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1416 encode_compound_hdr(&xdr, &hdr);
1417 status = encode_putfh(&xdr, args->fh);
1418 if(status)
1419 goto out;
1420 status = encode_open_confirm(&xdr, args);
1421 out:
1422 return status;
1423 }
1424
1425 /*
1426 * Encode an OPEN request with no attributes.
1427 */
1428 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1429 {
1430 struct xdr_stream xdr;
1431 struct compound_hdr hdr = {
1432 .nops = 2,
1433 };
1434 int status;
1435
1436 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1437 encode_compound_hdr(&xdr, &hdr);
1438 status = encode_putfh(&xdr, args->fh);
1439 if (status)
1440 goto out;
1441 status = encode_open(&xdr, args);
1442 out:
1443 return status;
1444 }
1445
1446 /*
1447 * Encode an OPEN_DOWNGRADE request
1448 */
1449 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1450 {
1451 struct xdr_stream xdr;
1452 struct compound_hdr hdr = {
1453 .nops = 2,
1454 };
1455 int status;
1456
1457 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1458 encode_compound_hdr(&xdr, &hdr);
1459 status = encode_putfh(&xdr, args->fh);
1460 if (status)
1461 goto out;
1462 status = encode_open_downgrade(&xdr, args);
1463 out:
1464 return status;
1465 }
1466
1467 /*
1468 * Encode a LOCK request
1469 */
1470 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1471 {
1472 struct xdr_stream xdr;
1473 struct compound_hdr hdr = {
1474 .nops = 2,
1475 };
1476 int status;
1477
1478 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1479 encode_compound_hdr(&xdr, &hdr);
1480 status = encode_putfh(&xdr, args->fh);
1481 if(status)
1482 goto out;
1483 status = encode_lock(&xdr, args);
1484 out:
1485 return status;
1486 }
1487
1488 /*
1489 * Encode a LOCKT request
1490 */
1491 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1492 {
1493 struct xdr_stream xdr;
1494 struct compound_hdr hdr = {
1495 .nops = 2,
1496 };
1497 int status;
1498
1499 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1500 encode_compound_hdr(&xdr, &hdr);
1501 status = encode_putfh(&xdr, args->fh);
1502 if(status)
1503 goto out;
1504 status = encode_lockt(&xdr, args);
1505 out:
1506 return status;
1507 }
1508
1509 /*
1510 * Encode a LOCKU request
1511 */
1512 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1513 {
1514 struct xdr_stream xdr;
1515 struct compound_hdr hdr = {
1516 .nops = 2,
1517 };
1518 int status;
1519
1520 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1521 encode_compound_hdr(&xdr, &hdr);
1522 status = encode_putfh(&xdr, args->fh);
1523 if(status)
1524 goto out;
1525 status = encode_locku(&xdr, args);
1526 out:
1527 return status;
1528 }
1529
1530 /*
1531 * Encode a READLINK request
1532 */
1533 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1534 {
1535 struct xdr_stream xdr;
1536 struct compound_hdr hdr = {
1537 .nops = 2,
1538 };
1539 int status;
1540
1541 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1542 encode_compound_hdr(&xdr, &hdr);
1543 status = encode_putfh(&xdr, args->fh);
1544 if(status)
1545 goto out;
1546 status = encode_readlink(&xdr, args, req);
1547 out:
1548 return status;
1549 }
1550
1551 /*
1552 * Encode a READDIR request
1553 */
1554 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1555 {
1556 struct xdr_stream xdr;
1557 struct compound_hdr hdr = {
1558 .nops = 2,
1559 };
1560 int status;
1561
1562 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1563 encode_compound_hdr(&xdr, &hdr);
1564 status = encode_putfh(&xdr, args->fh);
1565 if(status)
1566 goto out;
1567 status = encode_readdir(&xdr, args, req);
1568 out:
1569 return status;
1570 }
1571
1572 /*
1573 * Encode a READ request
1574 */
1575 static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1576 {
1577 struct rpc_auth *auth = req->rq_task->tk_auth;
1578 struct xdr_stream xdr;
1579 struct compound_hdr hdr = {
1580 .nops = 2,
1581 };
1582 int replen, status;
1583
1584 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1585 encode_compound_hdr(&xdr, &hdr);
1586 status = encode_putfh(&xdr, args->fh);
1587 if (status)
1588 goto out;
1589 status = encode_read(&xdr, args);
1590 if (status)
1591 goto out;
1592
1593 /* set up reply kvec
1594 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1595 * + OP_READ + status + eof + datalen = 9
1596 */
1597 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1598 xdr_inline_pages(&req->rq_rcv_buf, replen,
1599 args->pages, args->pgbase, args->count);
1600 out:
1601 return status;
1602 }
1603
1604 /*
1605 * Encode an SETATTR request
1606 */
1607 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1608
1609 {
1610 struct xdr_stream xdr;
1611 struct compound_hdr hdr = {
1612 .nops = 3,
1613 };
1614 int status;
1615
1616 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1617 encode_compound_hdr(&xdr, &hdr);
1618 status = encode_putfh(&xdr, args->fh);
1619 if(status)
1620 goto out;
1621 status = encode_setattr(&xdr, args, args->server);
1622 if(status)
1623 goto out;
1624 status = encode_getfattr(&xdr, args->bitmask);
1625 out:
1626 return status;
1627 }
1628
1629 /*
1630 * Encode a WRITE request
1631 */
1632 static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1633 {
1634 struct xdr_stream xdr;
1635 struct compound_hdr hdr = {
1636 .nops = 2,
1637 };
1638 int status;
1639
1640 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1641 encode_compound_hdr(&xdr, &hdr);
1642 status = encode_putfh(&xdr, args->fh);
1643 if (status)
1644 goto out;
1645 status = encode_write(&xdr, args);
1646 out:
1647 return status;
1648 }
1649
1650 /*
1651 * a COMMIT request
1652 */
1653 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1654 {
1655 struct xdr_stream xdr;
1656 struct compound_hdr hdr = {
1657 .nops = 2,
1658 };
1659 int status;
1660
1661 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1662 encode_compound_hdr(&xdr, &hdr);
1663 status = encode_putfh(&xdr, args->fh);
1664 if (status)
1665 goto out;
1666 status = encode_commit(&xdr, args);
1667 out:
1668 return status;
1669 }
1670
1671 /*
1672 * FSINFO request
1673 */
1674 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1675 {
1676 struct xdr_stream xdr;
1677 struct compound_hdr hdr = {
1678 .nops = 2,
1679 };
1680 int status;
1681
1682 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1683 encode_compound_hdr(&xdr, &hdr);
1684 status = encode_putfh(&xdr, args->fh);
1685 if (!status)
1686 status = encode_fsinfo(&xdr, args->bitmask);
1687 return status;
1688 }
1689
1690 /*
1691 * a PATHCONF request
1692 */
1693 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1694 {
1695 extern u32 nfs4_pathconf_bitmap[2];
1696 struct xdr_stream xdr;
1697 struct compound_hdr hdr = {
1698 .nops = 2,
1699 };
1700 int status;
1701
1702 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1703 encode_compound_hdr(&xdr, &hdr);
1704 status = encode_putfh(&xdr, args->fh);
1705 if (!status)
1706 status = encode_getattr_one(&xdr,
1707 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1708 return status;
1709 }
1710
1711 /*
1712 * a STATFS request
1713 */
1714 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1715 {
1716 extern u32 nfs4_statfs_bitmap[];
1717 struct xdr_stream xdr;
1718 struct compound_hdr hdr = {
1719 .nops = 2,
1720 };
1721 int status;
1722
1723 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1724 encode_compound_hdr(&xdr, &hdr);
1725 status = encode_putfh(&xdr, args->fh);
1726 if (status == 0)
1727 status = encode_getattr_two(&xdr,
1728 args->bitmask[0] & nfs4_statfs_bitmap[0],
1729 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1730 return status;
1731 }
1732
1733 /*
1734 * GETATTR_BITMAP request
1735 */
1736 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1737 {
1738 struct xdr_stream xdr;
1739 struct compound_hdr hdr = {
1740 .nops = 2,
1741 };
1742 int status;
1743
1744 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1745 encode_compound_hdr(&xdr, &hdr);
1746 status = encode_putfh(&xdr, fhandle);
1747 if (status == 0)
1748 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1749 FATTR4_WORD0_LINK_SUPPORT|
1750 FATTR4_WORD0_SYMLINK_SUPPORT|
1751 FATTR4_WORD0_ACLSUPPORT);
1752 return status;
1753 }
1754
1755 /*
1756 * a RENEW request
1757 */
1758 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1759 {
1760 struct xdr_stream xdr;
1761 struct compound_hdr hdr = {
1762 .nops = 1,
1763 };
1764
1765 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1766 encode_compound_hdr(&xdr, &hdr);
1767 return encode_renew(&xdr, clp);
1768 }
1769
1770 /*
1771 * a SETCLIENTID request
1772 */
1773 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1774 {
1775 struct xdr_stream xdr;
1776 struct compound_hdr hdr = {
1777 .nops = 1,
1778 };
1779
1780 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1781 encode_compound_hdr(&xdr, &hdr);
1782 return encode_setclientid(&xdr, sc);
1783 }
1784
1785 /*
1786 * a SETCLIENTID_CONFIRM request
1787 */
1788 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1789 {
1790 struct xdr_stream xdr;
1791 struct compound_hdr hdr = {
1792 .nops = 3,
1793 };
1794 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1795 int status;
1796
1797 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1798 encode_compound_hdr(&xdr, &hdr);
1799 status = encode_setclientid_confirm(&xdr, clp);
1800 if (!status)
1801 status = encode_putrootfh(&xdr);
1802 if (!status)
1803 status = encode_fsinfo(&xdr, lease_bitmap);
1804 return status;
1805 }
1806
1807 /*
1808 * DELEGRETURN request
1809 */
1810 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1811 {
1812 struct xdr_stream xdr;
1813 struct compound_hdr hdr = {
1814 .nops = 2,
1815 };
1816 int status;
1817
1818 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1819 encode_compound_hdr(&xdr, &hdr);
1820 if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1821 status = encode_delegreturn(&xdr, args->stateid);
1822 return status;
1823 }
1824
1825 /*
1826 * START OF "GENERIC" DECODE ROUTINES.
1827 * These may look a little ugly since they are imported from a "generic"
1828 * set of XDR encode/decode routines which are intended to be shared by
1829 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1830 *
1831 * If the pain of reading these is too great, it should be a straightforward
1832 * task to translate them into Linux-specific versions which are more
1833 * consistent with the style used in NFSv2/v3...
1834 */
1835 #define READ32(x) (x) = ntohl(*p++)
1836 #define READ64(x) do { \
1837 (x) = (u64)ntohl(*p++) << 32; \
1838 (x) |= ntohl(*p++); \
1839 } while (0)
1840 #define READTIME(x) do { \
1841 p++; \
1842 (x.tv_sec) = ntohl(*p++); \
1843 (x.tv_nsec) = ntohl(*p++); \
1844 } while (0)
1845 #define COPYMEM(x,nbytes) do { \
1846 memcpy((x), p, nbytes); \
1847 p += XDR_QUADLEN(nbytes); \
1848 } while (0)
1849
1850 #define READ_BUF(nbytes) do { \
1851 p = xdr_inline_decode(xdr, nbytes); \
1852 if (!p) { \
1853 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
1854 __FUNCTION__, __LINE__); \
1855 return -EIO; \
1856 } \
1857 } while (0)
1858
1859 static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
1860 {
1861 uint32_t *p;
1862
1863 READ_BUF(4);
1864 READ32(*len);
1865 READ_BUF(*len);
1866 *string = (char *)p;
1867 return 0;
1868 }
1869
1870 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
1871 {
1872 uint32_t *p;
1873
1874 READ_BUF(8);
1875 READ32(hdr->status);
1876 READ32(hdr->taglen);
1877
1878 READ_BUF(hdr->taglen + 4);
1879 hdr->tag = (char *)p;
1880 p += XDR_QUADLEN(hdr->taglen);
1881 READ32(hdr->nops);
1882 return 0;
1883 }
1884
1885 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
1886 {
1887 uint32_t *p;
1888 uint32_t opnum;
1889 int32_t nfserr;
1890
1891 READ_BUF(8);
1892 READ32(opnum);
1893 if (opnum != expected) {
1894 printk(KERN_NOTICE
1895 "nfs4_decode_op_hdr: Server returned operation"
1896 " %d but we issued a request for %d\n",
1897 opnum, expected);
1898 return -EIO;
1899 }
1900 READ32(nfserr);
1901 if (nfserr != NFS_OK)
1902 return -nfs_stat_to_errno(nfserr);
1903 return 0;
1904 }
1905
1906 /* Dummy routine */
1907 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
1908 {
1909 uint32_t *p;
1910 uint32_t strlen;
1911 char *str;
1912
1913 READ_BUF(12);
1914 return decode_opaque_inline(xdr, &strlen, &str);
1915 }
1916
1917 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
1918 {
1919 uint32_t bmlen, *p;
1920
1921 READ_BUF(4);
1922 READ32(bmlen);
1923
1924 bitmap[0] = bitmap[1] = 0;
1925 READ_BUF((bmlen << 2));
1926 if (bmlen > 0) {
1927 READ32(bitmap[0]);
1928 if (bmlen > 1)
1929 READ32(bitmap[1]);
1930 }
1931 return 0;
1932 }
1933
1934 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
1935 {
1936 uint32_t *p;
1937
1938 READ_BUF(4);
1939 READ32(*attrlen);
1940 *savep = xdr->p;
1941 return 0;
1942 }
1943
1944 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
1945 {
1946 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
1947 decode_attr_bitmap(xdr, bitmask);
1948 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
1949 } else
1950 bitmask[0] = bitmask[1] = 0;
1951 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
1952 return 0;
1953 }
1954
1955 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
1956 {
1957 uint32_t *p;
1958
1959 *type = 0;
1960 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
1961 return -EIO;
1962 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
1963 READ_BUF(4);
1964 READ32(*type);
1965 if (*type < NF4REG || *type > NF4NAMEDATTR) {
1966 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
1967 return -EIO;
1968 }
1969 bitmap[0] &= ~FATTR4_WORD0_TYPE;
1970 }
1971 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
1972 return 0;
1973 }
1974
1975 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
1976 {
1977 uint32_t *p;
1978
1979 *change = 0;
1980 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
1981 return -EIO;
1982 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
1983 READ_BUF(8);
1984 READ64(*change);
1985 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
1986 }
1987 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
1988 (unsigned long long)*change);
1989 return 0;
1990 }
1991
1992 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
1993 {
1994 uint32_t *p;
1995
1996 *size = 0;
1997 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
1998 return -EIO;
1999 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2000 READ_BUF(8);
2001 READ64(*size);
2002 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2003 }
2004 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2005 return 0;
2006 }
2007
2008 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2009 {
2010 uint32_t *p;
2011
2012 *res = 0;
2013 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2014 return -EIO;
2015 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2016 READ_BUF(4);
2017 READ32(*res);
2018 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2019 }
2020 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2021 return 0;
2022 }
2023
2024 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2025 {
2026 uint32_t *p;
2027
2028 *res = 0;
2029 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2030 return -EIO;
2031 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2032 READ_BUF(4);
2033 READ32(*res);
2034 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2035 }
2036 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2037 return 0;
2038 }
2039
2040 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2041 {
2042 uint32_t *p;
2043
2044 fsid->major = 0;
2045 fsid->minor = 0;
2046 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2047 return -EIO;
2048 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2049 READ_BUF(16);
2050 READ64(fsid->major);
2051 READ64(fsid->minor);
2052 bitmap[0] &= ~FATTR4_WORD0_FSID;
2053 }
2054 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2055 (unsigned long long)fsid->major,
2056 (unsigned long long)fsid->minor);
2057 return 0;
2058 }
2059
2060 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2061 {
2062 uint32_t *p;
2063
2064 *res = 60;
2065 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2066 return -EIO;
2067 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2068 READ_BUF(4);
2069 READ32(*res);
2070 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2071 }
2072 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2073 return 0;
2074 }
2075
2076 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2077 {
2078 uint32_t *p;
2079
2080 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2081 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2082 return -EIO;
2083 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2084 READ_BUF(4);
2085 READ32(*res);
2086 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2087 }
2088 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2089 return 0;
2090 }
2091
2092 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2093 {
2094 uint32_t *p;
2095
2096 *fileid = 0;
2097 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2098 return -EIO;
2099 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2100 READ_BUF(8);
2101 READ64(*fileid);
2102 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2103 }
2104 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2105 return 0;
2106 }
2107
2108 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2109 {
2110 uint32_t *p;
2111 int status = 0;
2112
2113 *res = 0;
2114 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2115 return -EIO;
2116 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2117 READ_BUF(8);
2118 READ64(*res);
2119 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2120 }
2121 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2122 return status;
2123 }
2124
2125 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2126 {
2127 uint32_t *p;
2128 int status = 0;
2129
2130 *res = 0;
2131 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2132 return -EIO;
2133 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2134 READ_BUF(8);
2135 READ64(*res);
2136 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2137 }
2138 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2139 return status;
2140 }
2141
2142 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2143 {
2144 uint32_t *p;
2145 int status = 0;
2146
2147 *res = 0;
2148 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2149 return -EIO;
2150 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2151 READ_BUF(8);
2152 READ64(*res);
2153 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2154 }
2155 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2156 return status;
2157 }
2158
2159 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2160 {
2161 uint32_t *p;
2162 int status = 0;
2163
2164 *res = 0;
2165 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2166 return -EIO;
2167 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2168 READ_BUF(8);
2169 READ64(*res);
2170 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2171 }
2172 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2173 return status;
2174 }
2175
2176 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2177 {
2178 uint32_t *p;
2179 int status = 0;
2180
2181 *maxlink = 1;
2182 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2183 return -EIO;
2184 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2185 READ_BUF(4);
2186 READ32(*maxlink);
2187 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2188 }
2189 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2190 return status;
2191 }
2192
2193 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2194 {
2195 uint32_t *p;
2196 int status = 0;
2197
2198 *maxname = 1024;
2199 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2200 return -EIO;
2201 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2202 READ_BUF(4);
2203 READ32(*maxname);
2204 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2205 }
2206 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2207 return status;
2208 }
2209
2210 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2211 {
2212 uint32_t *p;
2213 int status = 0;
2214
2215 *res = 1024;
2216 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2217 return -EIO;
2218 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2219 uint64_t maxread;
2220 READ_BUF(8);
2221 READ64(maxread);
2222 if (maxread > 0x7FFFFFFF)
2223 maxread = 0x7FFFFFFF;
2224 *res = (uint32_t)maxread;
2225 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2226 }
2227 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2228 return status;
2229 }
2230
2231 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2232 {
2233 uint32_t *p;
2234 int status = 0;
2235
2236 *res = 1024;
2237 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2238 return -EIO;
2239 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2240 uint64_t maxwrite;
2241 READ_BUF(8);
2242 READ64(maxwrite);
2243 if (maxwrite > 0x7FFFFFFF)
2244 maxwrite = 0x7FFFFFFF;
2245 *res = (uint32_t)maxwrite;
2246 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2247 }
2248 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2249 return status;
2250 }
2251
2252 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2253 {
2254 uint32_t *p;
2255
2256 *mode = 0;
2257 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2258 return -EIO;
2259 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2260 READ_BUF(4);
2261 READ32(*mode);
2262 *mode &= ~S_IFMT;
2263 bitmap[1] &= ~FATTR4_WORD1_MODE;
2264 }
2265 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2266 return 0;
2267 }
2268
2269 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2270 {
2271 uint32_t *p;
2272
2273 *nlink = 1;
2274 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2275 return -EIO;
2276 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2277 READ_BUF(4);
2278 READ32(*nlink);
2279 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2280 }
2281 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2282 return 0;
2283 }
2284
2285 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2286 {
2287 uint32_t len, *p;
2288
2289 *uid = -2;
2290 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2291 return -EIO;
2292 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2293 READ_BUF(4);
2294 READ32(len);
2295 READ_BUF(len);
2296 if (len < XDR_MAX_NETOBJ) {
2297 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2298 dprintk("%s: nfs_map_name_to_uid failed!\n",
2299 __FUNCTION__);
2300 } else
2301 printk(KERN_WARNING "%s: name too long (%u)!\n",
2302 __FUNCTION__, len);
2303 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2304 }
2305 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2306 return 0;
2307 }
2308
2309 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2310 {
2311 uint32_t len, *p;
2312
2313 *gid = -2;
2314 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2315 return -EIO;
2316 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2317 READ_BUF(4);
2318 READ32(len);
2319 READ_BUF(len);
2320 if (len < XDR_MAX_NETOBJ) {
2321 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2322 dprintk("%s: nfs_map_group_to_gid failed!\n",
2323 __FUNCTION__);
2324 } else
2325 printk(KERN_WARNING "%s: name too long (%u)!\n",
2326 __FUNCTION__, len);
2327 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2328 }
2329 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2330 return 0;
2331 }
2332
2333 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2334 {
2335 uint32_t major = 0, minor = 0, *p;
2336
2337 *rdev = MKDEV(0,0);
2338 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2339 return -EIO;
2340 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2341 dev_t tmp;
2342
2343 READ_BUF(8);
2344 READ32(major);
2345 READ32(minor);
2346 tmp = MKDEV(major, minor);
2347 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2348 *rdev = tmp;
2349 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2350 }
2351 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2352 return 0;
2353 }
2354
2355 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2356 {
2357 uint32_t *p;
2358 int status = 0;
2359
2360 *res = 0;
2361 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2362 return -EIO;
2363 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2364 READ_BUF(8);
2365 READ64(*res);
2366 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2367 }
2368 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2369 return status;
2370 }
2371
2372 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2373 {
2374 uint32_t *p;
2375 int status = 0;
2376
2377 *res = 0;
2378 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2379 return -EIO;
2380 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2381 READ_BUF(8);
2382 READ64(*res);
2383 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2384 }
2385 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2386 return status;
2387 }
2388
2389 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2390 {
2391 uint32_t *p;
2392 int status = 0;
2393
2394 *res = 0;
2395 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2396 return -EIO;
2397 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2398 READ_BUF(8);
2399 READ64(*res);
2400 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2401 }
2402 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2403 return status;
2404 }
2405
2406 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2407 {
2408 uint32_t *p;
2409
2410 *used = 0;
2411 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2412 return -EIO;
2413 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2414 READ_BUF(8);
2415 READ64(*used);
2416 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2417 }
2418 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2419 (unsigned long long)*used);
2420 return 0;
2421 }
2422
2423 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2424 {
2425 uint32_t *p;
2426 uint64_t sec;
2427 uint32_t nsec;
2428
2429 READ_BUF(12);
2430 READ64(sec);
2431 READ32(nsec);
2432 time->tv_sec = (time_t)sec;
2433 time->tv_nsec = (long)nsec;
2434 return 0;
2435 }
2436
2437 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2438 {
2439 int status = 0;
2440
2441 time->tv_sec = 0;
2442 time->tv_nsec = 0;
2443 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2444 return -EIO;
2445 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2446 status = decode_attr_time(xdr, time);
2447 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2448 }
2449 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2450 return status;
2451 }
2452
2453 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2454 {
2455 int status = 0;
2456
2457 time->tv_sec = 0;
2458 time->tv_nsec = 0;
2459 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2460 return -EIO;
2461 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2462 status = decode_attr_time(xdr, time);
2463 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2464 }
2465 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2466 return status;
2467 }
2468
2469 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2470 {
2471 int status = 0;
2472
2473 time->tv_sec = 0;
2474 time->tv_nsec = 0;
2475 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2476 return -EIO;
2477 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2478 status = decode_attr_time(xdr, time);
2479 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2480 }
2481 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2482 return status;
2483 }
2484
2485 static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2486 {
2487 unsigned int attrwords = XDR_QUADLEN(attrlen);
2488 unsigned int nwords = xdr->p - savep;
2489
2490 if (unlikely(attrwords != nwords)) {
2491 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2492 __FUNCTION__,
2493 attrwords << 2,
2494 (attrwords < nwords) ? '<' : '>',
2495 nwords << 2);
2496 return -EIO;
2497 }
2498 return 0;
2499 }
2500
2501 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2502 {
2503 uint32_t *p;
2504
2505 READ_BUF(20);
2506 READ32(cinfo->atomic);
2507 READ64(cinfo->before);
2508 READ64(cinfo->after);
2509 return 0;
2510 }
2511
2512 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2513 {
2514 uint32_t *p;
2515 uint32_t supp, acc;
2516 int status;
2517
2518 status = decode_op_hdr(xdr, OP_ACCESS);
2519 if (status)
2520 return status;
2521 READ_BUF(8);
2522 READ32(supp);
2523 READ32(acc);
2524 access->supported = supp;
2525 access->access = acc;
2526 return 0;
2527 }
2528
2529 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2530 {
2531 uint32_t *p;
2532 int status;
2533
2534 status = decode_op_hdr(xdr, OP_CLOSE);
2535 if (status)
2536 return status;
2537 READ_BUF(sizeof(res->stateid.data));
2538 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2539 return 0;
2540 }
2541
2542 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2543 {
2544 uint32_t *p;
2545 int status;
2546
2547 status = decode_op_hdr(xdr, OP_COMMIT);
2548 if (status)
2549 return status;
2550 READ_BUF(8);
2551 COPYMEM(res->verf->verifier, 8);
2552 return 0;
2553 }
2554
2555 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2556 {
2557 uint32_t *p;
2558 uint32_t bmlen;
2559 int status;
2560
2561 status = decode_op_hdr(xdr, OP_CREATE);
2562 if (status)
2563 return status;
2564 if ((status = decode_change_info(xdr, cinfo)))
2565 return status;
2566 READ_BUF(4);
2567 READ32(bmlen);
2568 READ_BUF(bmlen << 2);
2569 return 0;
2570 }
2571
2572 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2573 {
2574 uint32_t *savep;
2575 uint32_t attrlen,
2576 bitmap[2] = {0};
2577 int status;
2578
2579 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2580 goto xdr_error;
2581 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2582 goto xdr_error;
2583 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2584 goto xdr_error;
2585 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2586 goto xdr_error;
2587 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2588 goto xdr_error;
2589 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2590 goto xdr_error;
2591 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2592 goto xdr_error;
2593 status = verify_attr_len(xdr, savep, attrlen);
2594 xdr_error:
2595 if (status != 0)
2596 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2597 return status;
2598 }
2599
2600 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2601 {
2602 uint32_t *savep;
2603 uint32_t attrlen,
2604 bitmap[2] = {0};
2605 int status;
2606
2607 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2608 goto xdr_error;
2609 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2610 goto xdr_error;
2611 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2612 goto xdr_error;
2613
2614 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2615 goto xdr_error;
2616 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2617 goto xdr_error;
2618 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2619 goto xdr_error;
2620 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2621 goto xdr_error;
2622 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2623 goto xdr_error;
2624 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2625 goto xdr_error;
2626
2627 status = verify_attr_len(xdr, savep, attrlen);
2628 xdr_error:
2629 if (status != 0)
2630 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2631 return status;
2632 }
2633
2634 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2635 {
2636 uint32_t *savep;
2637 uint32_t attrlen,
2638 bitmap[2] = {0};
2639 int status;
2640
2641 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2642 goto xdr_error;
2643 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2644 goto xdr_error;
2645 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2646 goto xdr_error;
2647
2648 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2649 goto xdr_error;
2650 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2651 goto xdr_error;
2652
2653 status = verify_attr_len(xdr, savep, attrlen);
2654 xdr_error:
2655 if (status != 0)
2656 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2657 return status;
2658 }
2659
2660 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2661 {
2662 uint32_t *savep;
2663 uint32_t attrlen,
2664 bitmap[2] = {0},
2665 type;
2666 int status, fmode = 0;
2667
2668 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2669 goto xdr_error;
2670 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2671 goto xdr_error;
2672
2673 fattr->bitmap[0] = bitmap[0];
2674 fattr->bitmap[1] = bitmap[1];
2675
2676 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2677 goto xdr_error;
2678
2679
2680 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2681 goto xdr_error;
2682 fattr->type = nfs_type2fmt[type].nfs2type;
2683 fmode = nfs_type2fmt[type].mode;
2684
2685 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2686 goto xdr_error;
2687 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2688 goto xdr_error;
2689 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2690 goto xdr_error;
2691 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2692 goto xdr_error;
2693 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2694 goto xdr_error;
2695 fattr->mode |= fmode;
2696 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2697 goto xdr_error;
2698 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2699 goto xdr_error;
2700 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2701 goto xdr_error;
2702 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2703 goto xdr_error;
2704 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2705 goto xdr_error;
2706 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2707 goto xdr_error;
2708 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2709 goto xdr_error;
2710 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2711 goto xdr_error;
2712 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) {
2713 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
2714 fattr->timestamp = jiffies;
2715 }
2716 xdr_error:
2717 if (status != 0)
2718 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2719 return status;
2720 }
2721
2722
2723 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2724 {
2725 uint32_t *savep;
2726 uint32_t attrlen, bitmap[2];
2727 int status;
2728
2729 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2730 goto xdr_error;
2731 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2732 goto xdr_error;
2733 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2734 goto xdr_error;
2735
2736 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2737
2738 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2739 goto xdr_error;
2740 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2741 goto xdr_error;
2742 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2743 goto xdr_error;
2744 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2745 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2746 goto xdr_error;
2747 fsinfo->wtpref = fsinfo->wtmax;
2748
2749 status = verify_attr_len(xdr, savep, attrlen);
2750 xdr_error:
2751 if (status != 0)
2752 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2753 return status;
2754 }
2755
2756 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2757 {
2758 uint32_t *p;
2759 uint32_t len;
2760 int status;
2761
2762 status = decode_op_hdr(xdr, OP_GETFH);
2763 if (status)
2764 return status;
2765 /* Zero handle first to allow comparisons */
2766 memset(fh, 0, sizeof(*fh));
2767
2768 READ_BUF(4);
2769 READ32(len);
2770 if (len > NFS4_FHSIZE)
2771 return -EIO;
2772 fh->size = len;
2773 READ_BUF(len);
2774 COPYMEM(fh->data, len);
2775 return 0;
2776 }
2777
2778 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2779 {
2780 int status;
2781
2782 status = decode_op_hdr(xdr, OP_LINK);
2783 if (status)
2784 return status;
2785 return decode_change_info(xdr, cinfo);
2786 }
2787
2788 /*
2789 * We create the owner, so we know a proper owner.id length is 4.
2790 */
2791 static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2792 {
2793 uint32_t *p;
2794 uint32_t namelen;
2795
2796 READ_BUF(32);
2797 READ64(denied->offset);
2798 READ64(denied->length);
2799 READ32(denied->type);
2800 READ64(denied->owner.clientid);
2801 READ32(namelen);
2802 READ_BUF(namelen);
2803 if (namelen == 4)
2804 READ32(denied->owner.id);
2805 return -NFS4ERR_DENIED;
2806 }
2807
2808 static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2809 {
2810 uint32_t *p;
2811 int status;
2812
2813 status = decode_op_hdr(xdr, OP_LOCK);
2814 if (status == 0) {
2815 READ_BUF(sizeof(nfs4_stateid));
2816 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2817 } else if (status == -NFS4ERR_DENIED)
2818 return decode_lock_denied(xdr, &res->u.denied);
2819 return status;
2820 }
2821
2822 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2823 {
2824 int status;
2825 status = decode_op_hdr(xdr, OP_LOCKT);
2826 if (status == -NFS4ERR_DENIED)
2827 return decode_lock_denied(xdr, &res->u.denied);
2828 return status;
2829 }
2830
2831 static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2832 {
2833 uint32_t *p;
2834 int status;
2835
2836 status = decode_op_hdr(xdr, OP_LOCKU);
2837 if (status == 0) {
2838 READ_BUF(sizeof(nfs4_stateid));
2839 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2840 }
2841 return status;
2842 }
2843
2844 static int decode_lookup(struct xdr_stream *xdr)
2845 {
2846 return decode_op_hdr(xdr, OP_LOOKUP);
2847 }
2848
2849 /* This is too sick! */
2850 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2851 {
2852 uint32_t *p;
2853 uint32_t limit_type, nblocks, blocksize;
2854
2855 READ_BUF(12);
2856 READ32(limit_type);
2857 switch (limit_type) {
2858 case 1:
2859 READ64(*maxsize);
2860 break;
2861 case 2:
2862 READ32(nblocks);
2863 READ32(blocksize);
2864 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
2865 }
2866 return 0;
2867 }
2868
2869 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
2870 {
2871 uint32_t *p;
2872 uint32_t delegation_type;
2873
2874 READ_BUF(4);
2875 READ32(delegation_type);
2876 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
2877 res->delegation_type = 0;
2878 return 0;
2879 }
2880 READ_BUF(20);
2881 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
2882 READ32(res->do_recall);
2883 switch (delegation_type) {
2884 case NFS4_OPEN_DELEGATE_READ:
2885 res->delegation_type = FMODE_READ;
2886 break;
2887 case NFS4_OPEN_DELEGATE_WRITE:
2888 res->delegation_type = FMODE_WRITE|FMODE_READ;
2889 if (decode_space_limit(xdr, &res->maxsize) < 0)
2890 return -EIO;
2891 }
2892 return decode_ace(xdr, NULL, res->server->nfs4_state);
2893 }
2894
2895 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
2896 {
2897 uint32_t *p;
2898 uint32_t bmlen;
2899 int status;
2900
2901 status = decode_op_hdr(xdr, OP_OPEN);
2902 if (status)
2903 return status;
2904 READ_BUF(sizeof(res->stateid.data));
2905 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2906
2907 decode_change_info(xdr, &res->cinfo);
2908
2909 READ_BUF(8);
2910 READ32(res->rflags);
2911 READ32(bmlen);
2912 if (bmlen > 10)
2913 goto xdr_error;
2914
2915 READ_BUF(bmlen << 2);
2916 p += bmlen;
2917 return decode_delegation(xdr, res);
2918 xdr_error:
2919 printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
2920 return -EIO;
2921 }
2922
2923 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
2924 {
2925 uint32_t *p;
2926 int status;
2927
2928 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
2929 if (status)
2930 return status;
2931 READ_BUF(sizeof(res->stateid.data));
2932 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2933 return 0;
2934 }
2935
2936 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
2937 {
2938 uint32_t *p;
2939 int status;
2940
2941 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
2942 if (status)
2943 return status;
2944 READ_BUF(sizeof(res->stateid.data));
2945 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2946 return 0;
2947 }
2948
2949 static int decode_putfh(struct xdr_stream *xdr)
2950 {
2951 return decode_op_hdr(xdr, OP_PUTFH);
2952 }
2953
2954 static int decode_putrootfh(struct xdr_stream *xdr)
2955 {
2956 return decode_op_hdr(xdr, OP_PUTROOTFH);
2957 }
2958
2959 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
2960 {
2961 struct kvec *iov = req->rq_rcv_buf.head;
2962 uint32_t *p;
2963 uint32_t count, eof, recvd, hdrlen;
2964 int status;
2965
2966 status = decode_op_hdr(xdr, OP_READ);
2967 if (status)
2968 return status;
2969 READ_BUF(8);
2970 READ32(eof);
2971 READ32(count);
2972 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
2973 recvd = req->rq_rcv_buf.len - hdrlen;
2974 if (count > recvd) {
2975 printk(KERN_WARNING "NFS: server cheating in read reply: "
2976 "count %u > recvd %u\n", count, recvd);
2977 count = recvd;
2978 eof = 0;
2979 }
2980 xdr_read_pages(xdr, count);
2981 res->eof = eof;
2982 res->count = count;
2983 return 0;
2984 }
2985
2986 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
2987 {
2988 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
2989 struct page *page = *rcvbuf->pages;
2990 struct kvec *iov = rcvbuf->head;
2991 unsigned int nr, pglen = rcvbuf->page_len;
2992 uint32_t *end, *entry, *p, *kaddr;
2993 uint32_t len, attrlen;
2994 int hdrlen, recvd, status;
2995
2996 status = decode_op_hdr(xdr, OP_READDIR);
2997 if (status)
2998 return status;
2999 READ_BUF(8);
3000 COPYMEM(readdir->verifier.data, 8);
3001
3002 hdrlen = (char *) p - (char *) iov->iov_base;
3003 recvd = rcvbuf->len - hdrlen;
3004 if (pglen > recvd)
3005 pglen = recvd;
3006 xdr_read_pages(xdr, pglen);
3007
3008 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3009 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3010 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3011 entry = p;
3012 for (nr = 0; *p++; nr++) {
3013 if (p + 3 > end)
3014 goto short_pkt;
3015 p += 2; /* cookie */
3016 len = ntohl(*p++); /* filename length */
3017 if (len > NFS4_MAXNAMLEN) {
3018 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3019 goto err_unmap;
3020 }
3021 p += XDR_QUADLEN(len);
3022 if (p + 1 > end)
3023 goto short_pkt;
3024 len = ntohl(*p++); /* bitmap length */
3025 p += len;
3026 if (p + 1 > end)
3027 goto short_pkt;
3028 attrlen = XDR_QUADLEN(ntohl(*p++));
3029 p += attrlen; /* attributes */
3030 if (p + 2 > end)
3031 goto short_pkt;
3032 entry = p;
3033 }
3034 if (!nr && (entry[0] != 0 || entry[1] == 0))
3035 goto short_pkt;
3036 out:
3037 kunmap_atomic(kaddr, KM_USER0);
3038 return 0;
3039 short_pkt:
3040 entry[0] = entry[1] = 0;
3041 /* truncate listing ? */
3042 if (!nr) {
3043 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3044 entry[1] = 1;
3045 }
3046 goto out;
3047 err_unmap:
3048 kunmap_atomic(kaddr, KM_USER0);
3049 return -errno_NFSERR_IO;
3050 }
3051
3052 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3053 {
3054 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3055 struct kvec *iov = rcvbuf->head;
3056 int hdrlen, len, recvd;
3057 uint32_t *p;
3058 char *kaddr;
3059 int status;
3060
3061 status = decode_op_hdr(xdr, OP_READLINK);
3062 if (status)
3063 return status;
3064
3065 /* Convert length of symlink */
3066 READ_BUF(4);
3067 READ32(len);
3068 if (len >= rcvbuf->page_len || len <= 0) {
3069 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3070 return -ENAMETOOLONG;
3071 }
3072 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3073 recvd = req->rq_rcv_buf.len - hdrlen;
3074 if (recvd < len) {
3075 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3076 "count %u > recvd %u\n", len, recvd);
3077 return -EIO;
3078 }
3079 xdr_read_pages(xdr, len);
3080 /*
3081 * The XDR encode routine has set things up so that
3082 * the link text will be copied directly into the
3083 * buffer. We just have to do overflow-checking,
3084 * and and null-terminate the text (the VFS expects
3085 * null-termination).
3086 */
3087 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3088 kaddr[len+rcvbuf->page_base] = '\0';
3089 kunmap_atomic(kaddr, KM_USER0);
3090 return 0;
3091 }
3092
3093 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3094 {
3095 int status;
3096
3097 status = decode_op_hdr(xdr, OP_REMOVE);
3098 if (status)
3099 goto out;
3100 status = decode_change_info(xdr, cinfo);
3101 out:
3102 return status;
3103 }
3104
3105 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3106 struct nfs4_change_info *new_cinfo)
3107 {
3108 int status;
3109
3110 status = decode_op_hdr(xdr, OP_RENAME);
3111 if (status)
3112 goto out;
3113 if ((status = decode_change_info(xdr, old_cinfo)))
3114 goto out;
3115 status = decode_change_info(xdr, new_cinfo);
3116 out:
3117 return status;
3118 }
3119
3120 static int decode_renew(struct xdr_stream *xdr)
3121 {
3122 return decode_op_hdr(xdr, OP_RENEW);
3123 }
3124
3125 static int
3126 decode_savefh(struct xdr_stream *xdr)
3127 {
3128 return decode_op_hdr(xdr, OP_SAVEFH);
3129 }
3130
3131 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3132 {
3133 uint32_t *p;
3134 uint32_t bmlen;
3135 int status;
3136
3137
3138 status = decode_op_hdr(xdr, OP_SETATTR);
3139 if (status)
3140 return status;
3141 READ_BUF(4);
3142 READ32(bmlen);
3143 READ_BUF(bmlen << 2);
3144 return 0;
3145 }
3146
3147 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3148 {
3149 uint32_t *p;
3150 uint32_t opnum;
3151 int32_t nfserr;
3152
3153 READ_BUF(8);
3154 READ32(opnum);
3155 if (opnum != OP_SETCLIENTID) {
3156 printk(KERN_NOTICE
3157 "nfs4_decode_setclientid: Server returned operation"
3158 " %d\n", opnum);
3159 return -EIO;
3160 }
3161 READ32(nfserr);
3162 if (nfserr == NFS_OK) {
3163 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3164 READ64(clp->cl_clientid);
3165 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3166 } else if (nfserr == NFSERR_CLID_INUSE) {
3167 uint32_t len;
3168
3169 /* skip netid string */
3170 READ_BUF(4);
3171 READ32(len);
3172 READ_BUF(len);
3173
3174 /* skip uaddr string */
3175 READ_BUF(4);
3176 READ32(len);
3177 READ_BUF(len);
3178 return -EEXIST;
3179 } else
3180 return -nfs_stat_to_errno(nfserr);
3181
3182 return 0;
3183 }
3184
3185 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3186 {
3187 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3188 }
3189
3190 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3191 {
3192 uint32_t *p;
3193 int status;
3194
3195 status = decode_op_hdr(xdr, OP_WRITE);
3196 if (status)
3197 return status;
3198
3199 READ_BUF(16);
3200 READ32(res->count);
3201 READ32(res->verf->committed);
3202 COPYMEM(res->verf->verifier, 8);
3203 return 0;
3204 }
3205
3206 static int decode_delegreturn(struct xdr_stream *xdr)
3207 {
3208 return decode_op_hdr(xdr, OP_DELEGRETURN);
3209 }
3210
3211 /*
3212 * Decode OPEN_DOWNGRADE response
3213 */
3214 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3215 {
3216 struct xdr_stream xdr;
3217 struct compound_hdr hdr;
3218 int status;
3219
3220 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3221 status = decode_compound_hdr(&xdr, &hdr);
3222 if (status)
3223 goto out;
3224 status = decode_putfh(&xdr);
3225 if (status)
3226 goto out;
3227 status = decode_open_downgrade(&xdr, res);
3228 out:
3229 return status;
3230 }
3231
3232 /*
3233 * END OF "GENERIC" DECODE ROUTINES.
3234 */
3235
3236 /*
3237 * Decode ACCESS response
3238 */
3239 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3240 {
3241 struct xdr_stream xdr;
3242 struct compound_hdr hdr;
3243 int status;
3244
3245 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3246 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3247 goto out;
3248 if ((status = decode_putfh(&xdr)) == 0)
3249 status = decode_access(&xdr, res);
3250 out:
3251 return status;
3252 }
3253
3254 /*
3255 * Decode LOOKUP response
3256 */
3257 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3258 {
3259 struct xdr_stream xdr;
3260 struct compound_hdr hdr;
3261 int status;
3262
3263 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3264 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3265 goto out;
3266 if ((status = decode_putfh(&xdr)) != 0)
3267 goto out;
3268 if ((status = decode_lookup(&xdr)) != 0)
3269 goto out;
3270 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3271 goto out;
3272 status = decode_getfattr(&xdr, res->fattr, res->server);
3273 out:
3274 return status;
3275 }
3276
3277 /*
3278 * Decode LOOKUP_ROOT response
3279 */
3280 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3281 {
3282 struct xdr_stream xdr;
3283 struct compound_hdr hdr;
3284 int status;
3285
3286 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3287 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3288 goto out;
3289 if ((status = decode_putrootfh(&xdr)) != 0)
3290 goto out;
3291 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3292 status = decode_getfattr(&xdr, res->fattr, res->server);
3293 out:
3294 return status;
3295 }
3296
3297 /*
3298 * Decode REMOVE response
3299 */
3300 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3301 {
3302 struct xdr_stream xdr;
3303 struct compound_hdr hdr;
3304 int status;
3305
3306 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3307 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3308 goto out;
3309 if ((status = decode_putfh(&xdr)) == 0)
3310 status = decode_remove(&xdr, cinfo);
3311 out:
3312 return status;
3313 }
3314
3315 /*
3316 * Decode RENAME response
3317 */
3318 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3319 {
3320 struct xdr_stream xdr;
3321 struct compound_hdr hdr;
3322 int status;
3323
3324 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3325 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3326 goto out;
3327 if ((status = decode_putfh(&xdr)) != 0)
3328 goto out;
3329 if ((status = decode_savefh(&xdr)) != 0)
3330 goto out;
3331 if ((status = decode_putfh(&xdr)) != 0)
3332 goto out;
3333 status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3334 out:
3335 return status;
3336 }
3337
3338 /*
3339 * Decode LINK response
3340 */
3341 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3342 {
3343 struct xdr_stream xdr;
3344 struct compound_hdr hdr;
3345 int status;
3346
3347 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3348 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3349 goto out;
3350 if ((status = decode_putfh(&xdr)) != 0)
3351 goto out;
3352 if ((status = decode_savefh(&xdr)) != 0)
3353 goto out;
3354 if ((status = decode_putfh(&xdr)) != 0)
3355 goto out;
3356 status = decode_link(&xdr, cinfo);
3357 out:
3358 return status;
3359 }
3360
3361 /*
3362 * Decode CREATE response
3363 */
3364 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3365 {
3366 struct xdr_stream xdr;
3367 struct compound_hdr hdr;
3368 int status;
3369
3370 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3371 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3372 goto out;
3373 if ((status = decode_putfh(&xdr)) != 0)
3374 goto out;
3375 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3376 goto out;
3377 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3378 goto out;
3379 status = decode_getfattr(&xdr, res->fattr, res->server);
3380 if (status == NFS4ERR_DELAY)
3381 status = 0;
3382 out:
3383 return status;
3384 }
3385
3386 /*
3387 * Decode SYMLINK response
3388 */
3389 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3390 {
3391 return nfs4_xdr_dec_create(rqstp, p, res);
3392 }
3393
3394 /*
3395 * Decode GETATTR response
3396 */
3397 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3398 {
3399 struct xdr_stream xdr;
3400 struct compound_hdr hdr;
3401 int status;
3402
3403 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3404 status = decode_compound_hdr(&xdr, &hdr);
3405 if (status)
3406 goto out;
3407 status = decode_putfh(&xdr);
3408 if (status)
3409 goto out;
3410 status = decode_getfattr(&xdr, res->fattr, res->server);
3411 out:
3412 return status;
3413
3414 }
3415
3416
3417 /*
3418 * Decode CLOSE response
3419 */
3420 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3421 {
3422 struct xdr_stream xdr;
3423 struct compound_hdr hdr;
3424 int status;
3425
3426 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3427 status = decode_compound_hdr(&xdr, &hdr);
3428 if (status)
3429 goto out;
3430 status = decode_putfh(&xdr);
3431 if (status)
3432 goto out;
3433 status = decode_close(&xdr, res);
3434 out:
3435 return status;
3436 }
3437
3438 /*
3439 * Decode OPEN response
3440 */
3441 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3442 {
3443 struct xdr_stream xdr;
3444 struct compound_hdr hdr;
3445 int status;
3446
3447 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3448 status = decode_compound_hdr(&xdr, &hdr);
3449 if (status)
3450 goto out;
3451 status = decode_putfh(&xdr);
3452 if (status)
3453 goto out;
3454 status = decode_open(&xdr, res);
3455 if (status)
3456 goto out;
3457 status = decode_getfh(&xdr, &res->fh);
3458 if (status)
3459 goto out;
3460 status = decode_getfattr(&xdr, res->f_attr, res->server);
3461 if (status == NFS4ERR_DELAY)
3462 status = 0;
3463 out:
3464 return status;
3465 }
3466
3467 /*
3468 * Decode OPEN_CONFIRM response
3469 */
3470 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3471 {
3472 struct xdr_stream xdr;
3473 struct compound_hdr hdr;
3474 int status;
3475
3476 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3477 status = decode_compound_hdr(&xdr, &hdr);
3478 if (status)
3479 goto out;
3480 status = decode_putfh(&xdr);
3481 if (status)
3482 goto out;
3483 status = decode_open_confirm(&xdr, res);
3484 out:
3485 return status;
3486 }
3487
3488 /*
3489 * Decode OPEN response
3490 */
3491 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3492 {
3493 struct xdr_stream xdr;
3494 struct compound_hdr hdr;
3495 int status;
3496
3497 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3498 status = decode_compound_hdr(&xdr, &hdr);
3499 if (status)
3500 goto out;
3501 status = decode_putfh(&xdr);
3502 if (status)
3503 goto out;
3504 status = decode_open(&xdr, res);
3505 out:
3506 return status;
3507 }
3508
3509 /*
3510 * Decode SETATTR response
3511 */
3512 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3513 {
3514 struct xdr_stream xdr;
3515 struct compound_hdr hdr;
3516 int status;
3517
3518 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3519 status = decode_compound_hdr(&xdr, &hdr);
3520 if (status)
3521 goto out;
3522 status = decode_putfh(&xdr);
3523 if (status)
3524 goto out;
3525 status = decode_setattr(&xdr, res);
3526 if (status)
3527 goto out;
3528 status = decode_getfattr(&xdr, res->fattr, res->server);
3529 if (status == NFS4ERR_DELAY)
3530 status = 0;
3531 out:
3532 return status;
3533 }
3534
3535 /*
3536 * Decode LOCK response
3537 */
3538 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3539 {
3540 struct xdr_stream xdr;
3541 struct compound_hdr hdr;
3542 int status;
3543
3544 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3545 status = decode_compound_hdr(&xdr, &hdr);
3546 if (status)
3547 goto out;
3548 status = decode_putfh(&xdr);
3549 if (status)
3550 goto out;
3551 status = decode_lock(&xdr, res);
3552 out:
3553 return status;
3554 }
3555
3556 /*
3557 * Decode LOCKT response
3558 */
3559 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3560 {
3561 struct xdr_stream xdr;
3562 struct compound_hdr hdr;
3563 int status;
3564
3565 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3566 status = decode_compound_hdr(&xdr, &hdr);
3567 if (status)
3568 goto out;
3569 status = decode_putfh(&xdr);
3570 if (status)
3571 goto out;
3572 status = decode_lockt(&xdr, res);
3573 out:
3574 return status;
3575 }
3576
3577 /*
3578 * Decode LOCKU response
3579 */
3580 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3581 {
3582 struct xdr_stream xdr;
3583 struct compound_hdr hdr;
3584 int status;
3585
3586 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3587 status = decode_compound_hdr(&xdr, &hdr);
3588 if (status)
3589 goto out;
3590 status = decode_putfh(&xdr);
3591 if (status)
3592 goto out;
3593 status = decode_locku(&xdr, res);
3594 out:
3595 return status;
3596 }
3597
3598 /*
3599 * Decode READLINK response
3600 */
3601 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3602 {
3603 struct xdr_stream xdr;
3604 struct compound_hdr hdr;
3605 int status;
3606
3607 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3608 status = decode_compound_hdr(&xdr, &hdr);
3609 if (status)
3610 goto out;
3611 status = decode_putfh(&xdr);
3612 if (status)
3613 goto out;
3614 status = decode_readlink(&xdr, rqstp);
3615 out:
3616 return status;
3617 }
3618
3619 /*
3620 * Decode READDIR response
3621 */
3622 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3623 {
3624 struct xdr_stream xdr;
3625 struct compound_hdr hdr;
3626 int status;
3627
3628 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3629 status = decode_compound_hdr(&xdr, &hdr);
3630 if (status)
3631 goto out;
3632 status = decode_putfh(&xdr);
3633 if (status)
3634 goto out;
3635 status = decode_readdir(&xdr, rqstp, res);
3636 out:
3637 return status;
3638 }
3639
3640 /*
3641 * Decode Read response
3642 */
3643 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3644 {
3645 struct xdr_stream xdr;
3646 struct compound_hdr hdr;
3647 int status;
3648
3649 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3650 status = decode_compound_hdr(&xdr, &hdr);
3651 if (status)
3652 goto out;
3653 status = decode_putfh(&xdr);
3654 if (status)
3655 goto out;
3656 status = decode_read(&xdr, rqstp, res);
3657 if (!status)
3658 status = res->count;
3659 out:
3660 return status;
3661 }
3662
3663 /*
3664 * Decode WRITE response
3665 */
3666 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3667 {
3668 struct xdr_stream xdr;
3669 struct compound_hdr hdr;
3670 int status;
3671
3672 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3673 status = decode_compound_hdr(&xdr, &hdr);
3674 if (status)
3675 goto out;
3676 status = decode_putfh(&xdr);
3677 if (status)
3678 goto out;
3679 status = decode_write(&xdr, res);
3680 if (!status)
3681 status = res->count;
3682 out:
3683 return status;
3684 }
3685
3686 /*
3687 * Decode COMMIT response
3688 */
3689 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3690 {
3691 struct xdr_stream xdr;
3692 struct compound_hdr hdr;
3693 int status;
3694
3695 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3696 status = decode_compound_hdr(&xdr, &hdr);
3697 if (status)
3698 goto out;
3699 status = decode_putfh(&xdr);
3700 if (status)
3701 goto out;
3702 status = decode_commit(&xdr, res);
3703 out:
3704 return status;
3705 }
3706
3707 /*
3708 * FSINFO request
3709 */
3710 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3711 {
3712 struct xdr_stream xdr;
3713 struct compound_hdr hdr;
3714 int status;
3715
3716 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3717 status = decode_compound_hdr(&xdr, &hdr);
3718 if (!status)
3719 status = decode_putfh(&xdr);
3720 if (!status)
3721 status = decode_fsinfo(&xdr, fsinfo);
3722 if (!status)
3723 status = -nfs_stat_to_errno(hdr.status);
3724 return status;
3725 }
3726
3727 /*
3728 * PATHCONF request
3729 */
3730 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
3731 {
3732 struct xdr_stream xdr;
3733 struct compound_hdr hdr;
3734 int status;
3735
3736 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3737 status = decode_compound_hdr(&xdr, &hdr);
3738 if (!status)
3739 status = decode_putfh(&xdr);
3740 if (!status)
3741 status = decode_pathconf(&xdr, pathconf);
3742 return status;
3743 }
3744
3745 /*
3746 * STATFS request
3747 */
3748 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
3749 {
3750 struct xdr_stream xdr;
3751 struct compound_hdr hdr;
3752 int status;
3753
3754 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3755 status = decode_compound_hdr(&xdr, &hdr);
3756 if (!status)
3757 status = decode_putfh(&xdr);
3758 if (!status)
3759 status = decode_statfs(&xdr, fsstat);
3760 return status;
3761 }
3762
3763 /*
3764 * GETATTR_BITMAP request
3765 */
3766 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
3767 {
3768 struct xdr_stream xdr;
3769 struct compound_hdr hdr;
3770 int status;
3771
3772 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3773 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3774 goto out;
3775 if ((status = decode_putfh(&xdr)) != 0)
3776 goto out;
3777 status = decode_server_caps(&xdr, res);
3778 out:
3779 return status;
3780 }
3781
3782 /*
3783 * Decode RENEW response
3784 */
3785 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3786 {
3787 struct xdr_stream xdr;
3788 struct compound_hdr hdr;
3789 int status;
3790
3791 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3792 status = decode_compound_hdr(&xdr, &hdr);
3793 if (!status)
3794 status = decode_renew(&xdr);
3795 return status;
3796 }
3797
3798 /*
3799 * a SETCLIENTID request
3800 */
3801 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
3802 struct nfs4_client *clp)
3803 {
3804 struct xdr_stream xdr;
3805 struct compound_hdr hdr;
3806 int status;
3807
3808 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3809 status = decode_compound_hdr(&xdr, &hdr);
3810 if (!status)
3811 status = decode_setclientid(&xdr, clp);
3812 if (!status)
3813 status = -nfs_stat_to_errno(hdr.status);
3814 return status;
3815 }
3816
3817 /*
3818 * a SETCLIENTID_CONFIRM request
3819 */
3820 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3821 {
3822 struct xdr_stream xdr;
3823 struct compound_hdr hdr;
3824 int status;
3825
3826 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3827 status = decode_compound_hdr(&xdr, &hdr);
3828 if (!status)
3829 status = decode_setclientid_confirm(&xdr);
3830 if (!status)
3831 status = decode_putrootfh(&xdr);
3832 if (!status)
3833 status = decode_fsinfo(&xdr, fsinfo);
3834 if (!status)
3835 status = -nfs_stat_to_errno(hdr.status);
3836 return status;
3837 }
3838
3839 /*
3840 * DELEGRETURN request
3841 */
3842 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3843 {
3844 struct xdr_stream xdr;
3845 struct compound_hdr hdr;
3846 int status;
3847
3848 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3849 status = decode_compound_hdr(&xdr, &hdr);
3850 if (status == 0) {
3851 status = decode_putfh(&xdr);
3852 if (status == 0)
3853 status = decode_delegreturn(&xdr);
3854 }
3855 return status;
3856 }
3857
3858 uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
3859 {
3860 uint32_t bitmap[1] = {0};
3861 uint32_t len;
3862
3863 if (!*p++) {
3864 if (!*p)
3865 return ERR_PTR(-EAGAIN);
3866 entry->eof = 1;
3867 return ERR_PTR(-EBADCOOKIE);
3868 }
3869
3870 entry->prev_cookie = entry->cookie;
3871 p = xdr_decode_hyper(p, &entry->cookie);
3872 entry->len = ntohl(*p++);
3873 entry->name = (const char *) p;
3874 p += XDR_QUADLEN(entry->len);
3875
3876 /*
3877 * In case the server doesn't return an inode number,
3878 * we fake one here. (We don't use inode number 0,
3879 * since glibc seems to choke on it...)
3880 */
3881 entry->ino = 1;
3882
3883 len = ntohl(*p++); /* bitmap length */
3884 if (len > 0) {
3885 bitmap[0] = ntohl(*p);
3886 p += len;
3887 }
3888 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
3889 if (len > 0) {
3890 if (bitmap[0] == FATTR4_WORD0_FILEID)
3891 xdr_decode_hyper(p, &entry->ino);
3892 p += len;
3893 }
3894
3895 entry->eof = !p[0] && p[1];
3896 return p;
3897 }
3898
3899 /*
3900 * We need to translate between nfs status return values and
3901 * the local errno values which may not be the same.
3902 */
3903 static struct {
3904 int stat;
3905 int errno;
3906 } nfs_errtbl[] = {
3907 { NFS4_OK, 0 },
3908 { NFS4ERR_PERM, EPERM },
3909 { NFS4ERR_NOENT, ENOENT },
3910 { NFS4ERR_IO, errno_NFSERR_IO },
3911 { NFS4ERR_NXIO, ENXIO },
3912 { NFS4ERR_ACCESS, EACCES },
3913 { NFS4ERR_EXIST, EEXIST },
3914 { NFS4ERR_XDEV, EXDEV },
3915 { NFS4ERR_NOTDIR, ENOTDIR },
3916 { NFS4ERR_ISDIR, EISDIR },
3917 { NFS4ERR_INVAL, EINVAL },
3918 { NFS4ERR_FBIG, EFBIG },
3919 { NFS4ERR_NOSPC, ENOSPC },
3920 { NFS4ERR_ROFS, EROFS },
3921 { NFS4ERR_MLINK, EMLINK },
3922 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
3923 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
3924 { NFS4ERR_DQUOT, EDQUOT },
3925 { NFS4ERR_STALE, ESTALE },
3926 { NFS4ERR_BADHANDLE, EBADHANDLE },
3927 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
3928 { NFS4ERR_NOTSUPP, ENOTSUPP },
3929 { NFS4ERR_TOOSMALL, ETOOSMALL },
3930 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
3931 { NFS4ERR_BADTYPE, EBADTYPE },
3932 { NFS4ERR_LOCKED, EAGAIN },
3933 { NFS4ERR_RESOURCE, EREMOTEIO },
3934 { NFS4ERR_SYMLINK, ELOOP },
3935 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
3936 { NFS4ERR_DEADLOCK, EDEADLK },
3937 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
3938 * to be handled by a
3939 * middle-layer.
3940 */
3941 { -1, EIO }
3942 };
3943
3944 /*
3945 * Convert an NFS error code to a local one.
3946 * This one is used jointly by NFSv2 and NFSv3.
3947 */
3948 static int
3949 nfs_stat_to_errno(int stat)
3950 {
3951 int i;
3952 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
3953 if (nfs_errtbl[i].stat == stat)
3954 return nfs_errtbl[i].errno;
3955 }
3956 if (stat <= 10000 || stat > 10100) {
3957 /* The server is looney tunes. */
3958 return ESERVERFAULT;
3959 }
3960 /* If we cannot translate the error, the recovery routines should
3961 * handle it.
3962 * Note: remaining NFSv4 error codes have values > 10000, so should
3963 * not conflict with native Linux error codes.
3964 */
3965 return stat;
3966 }
3967
3968 #ifndef MAX
3969 # define MAX(a, b) (((a) > (b))? (a) : (b))
3970 #endif
3971
3972 #define PROC(proc, argtype, restype) \
3973 [NFSPROC4_CLNT_##proc] = { \
3974 .p_proc = NFSPROC4_COMPOUND, \
3975 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
3976 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
3977 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
3978 }
3979
3980 struct rpc_procinfo nfs4_procedures[] = {
3981 PROC(READ, enc_read, dec_read),
3982 PROC(WRITE, enc_write, dec_write),
3983 PROC(COMMIT, enc_commit, dec_commit),
3984 PROC(OPEN, enc_open, dec_open),
3985 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
3986 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
3987 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
3988 PROC(CLOSE, enc_close, dec_close),
3989 PROC(SETATTR, enc_setattr, dec_setattr),
3990 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
3991 PROC(RENEW, enc_renew, dec_renew),
3992 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
3993 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
3994 PROC(LOCK, enc_lock, dec_lock),
3995 PROC(LOCKT, enc_lockt, dec_lockt),
3996 PROC(LOCKU, enc_locku, dec_locku),
3997 PROC(ACCESS, enc_access, dec_access),
3998 PROC(GETATTR, enc_getattr, dec_getattr),
3999 PROC(LOOKUP, enc_lookup, dec_lookup),
4000 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4001 PROC(REMOVE, enc_remove, dec_remove),
4002 PROC(RENAME, enc_rename, dec_rename),
4003 PROC(LINK, enc_link, dec_link),
4004 PROC(SYMLINK, enc_symlink, dec_symlink),
4005 PROC(CREATE, enc_create, dec_create),
4006 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4007 PROC(STATFS, enc_statfs, dec_statfs),
4008 PROC(READLINK, enc_readlink, dec_readlink),
4009 PROC(READDIR, enc_readdir, dec_readdir),
4010 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4011 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4012 };
4013
4014 struct rpc_version nfs_version4 = {
4015 .number = 4,
4016 .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4017 .procs = nfs4_procedures
4018 };
4019
4020 /*
4021 * Local variables:
4022 * c-basic-offset: 8
4023 * End:
4024 */
4025
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