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nfsd: Headers Independence and include cleanups
[deliverable/linux.git] / fs / nfsd / nfs4xdr.c
CommitLineData
1da177e4 1/*
1da177e4
LT		 2 * Server-side XDR for NFSv4
3 *
4 * Copyright (c) 2002 The Regents of the University of Michigan.
5 * All rights reserved.
6 *
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 * TODO: Neil Brown made the following observation: We currently
36 * initially reserve NFSD_BUFSIZE space on the transmit queue and
37 * never release any of that until the request is complete.
38 * It would be good to calculate a new maximum response size while
39 * decoding the COMPOUND, and call svc_reserve with this number
40 * at the end of nfs4svc_decode_compoundargs.
41 */
42
43#include <linux/param.h>
44#include <linux/smp.h>
1da177e4
LT		 45#include <linux/fs.h>
46#include <linux/namei.h>
47#include <linux/vfs.h>
0733d213 48#include <linux/utsname.h>
1da177e4
LT		 49#include <linux/sunrpc/xdr.h>
50#include <linux/sunrpc/svc.h>
51#include <linux/sunrpc/clnt.h>
52#include <linux/nfsd/nfsd.h>
53#include <linux/nfsd/state.h>
54#include <linux/nfsd/xdr4.h>
55#include <linux/nfsd_idmap.h>
56#include <linux/nfs4.h>
57#include <linux/nfs4_acl.h>
dcb488a3 58#include <linux/sunrpc/gss_api.h>
4796f457 59#include <linux/sunrpc/svcauth_gss.h>
0a3adade 60#include "vfs.h"
1da177e4
LT		 61
62#define NFSDDBG_FACILITY NFSDDBG_XDR
63
42ca0993
BF		 64/*
65 * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing
66 * directory in order to indicate to the client that a filesystem boundary is present
67 * We use a fixed fsid for a referral
68 */
69#define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL
70#define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL
71
b37ad28b
AV		 72static __be32
73check_filename(char *str, int len, __be32 err)
1da177e4
LT		 74{
75 int i;
76
77 if (len == 0)
78 return nfserr_inval;
79 if (isdotent(str, len))
80 return err;
81 for (i = 0; i < len; i++)
82 if (str[i] == '/')
83 return err;
84 return 0;
85}
86
1da177e4 87#define DECODE_HEAD \
2ebbc012 88 __be32 *p; \
b37ad28b 89 __be32 status
1da177e4
LT		 90#define DECODE_TAIL \
91 status = 0; \
92out: \
93 return status; \
94xdr_error: \
817cb9d4
CL		 95 dprintk("NFSD: xdr error (%s:%d)\n", \
96 __FILE__, __LINE__); \
1da177e4
LT		 97 status = nfserr_bad_xdr; \
98 goto out
99
100#define READ32(x) (x) = ntohl(*p++)
101#define READ64(x) do { \
102 (x) = (u64)ntohl(*p++) << 32; \
103 (x) |= ntohl(*p++); \
104} while (0)
105#define READTIME(x) do { \
106 p++; \
107 (x) = ntohl(*p++); \
108 p++; \
109} while (0)
110#define READMEM(x,nbytes) do { \
111 x = (char *)p; \
112 p += XDR_QUADLEN(nbytes); \
113} while (0)
114#define SAVEMEM(x,nbytes) do { \
115 if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
116 savemem(argp, p, nbytes) : \
117 (char *)p)) { \
817cb9d4
CL		 118 dprintk("NFSD: xdr error (%s:%d)\n", \
119 __FILE__, __LINE__); \
1da177e4
LT		 120 goto xdr_error; \
121 } \
122 p += XDR_QUADLEN(nbytes); \
123} while (0)
124#define COPYMEM(x,nbytes) do { \
125 memcpy((x), p, nbytes); \
126 p += XDR_QUADLEN(nbytes); \
127} while (0)
128
129/* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */
130#define READ_BUF(nbytes) do { \
131 if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \
132 p = argp->p; \
133 argp->p += XDR_QUADLEN(nbytes); \
134 } else if (!(p = read_buf(argp, nbytes))) { \
817cb9d4
CL		 135 dprintk("NFSD: xdr error (%s:%d)\n", \
136 __FILE__, __LINE__); \
1da177e4
LT		 137 goto xdr_error; \
138 } \
139} while (0)
140
ca2a05aa 141static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
1da177e4
LT		 142{
143 /* We want more bytes than seem to be available.
144 * Maybe we need a new page, maybe we have just run out
145 */
ca2a05aa 146 unsigned int avail = (char *)argp->end - (char *)argp->p;
2ebbc012 147 __be32 *p;
1da177e4
LT		 148 if (avail + argp->pagelen < nbytes)
149 return NULL;
150 if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */
151 return NULL;
152 /* ok, we can do it with the current plus the next page */
153 if (nbytes <= sizeof(argp->tmp))
154 p = argp->tmp;
155 else {
f99d49ad 156 kfree(argp->tmpp);
1da177e4
LT		 157 p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL);
158 if (!p)
159 return NULL;
160
161 }
ca2a05aa
BF		 162 /*
163 * The following memcpy is safe because read_buf is always
164 * called with nbytes > avail, and the two cases above both
165 * guarantee p points to at least nbytes bytes.
166 */
1da177e4
LT		 167 memcpy(p, argp->p, avail);
168 /* step to next page */
169 argp->p = page_address(argp->pagelist[0]);
170 argp->pagelist++;
171 if (argp->pagelen < PAGE_SIZE) {
172 argp->end = p + (argp->pagelen>>2);
173 argp->pagelen = 0;
174 } else {
175 argp->end = p + (PAGE_SIZE>>2);
176 argp->pagelen -= PAGE_SIZE;
177 }
178 memcpy(((char*)p)+avail, argp->p, (nbytes - avail));
179 argp->p += XDR_QUADLEN(nbytes - avail);
180 return p;
181}
182
60adfc50
AA		 183static int zero_clientid(clientid_t *clid)
184{
185 return (clid->cl_boot == 0) && (clid->cl_id == 0);
186}
187
1da177e4
LT		 188static int
189defer_free(struct nfsd4_compoundargs *argp,
190 void (*release)(const void *), void *p)
191{
192 struct tmpbuf *tb;
193
194 tb = kmalloc(sizeof(*tb), GFP_KERNEL);
195 if (!tb)
196 return -ENOMEM;
197 tb->buf = p;
198 tb->release = release;
199 tb->next = argp->to_free;
200 argp->to_free = tb;
201 return 0;
202}
203
2ebbc012 204static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes)
1da177e4 205{
1da177e4 206 if (p == argp->tmp) {
a4db5fe5
BF		 207 p = kmalloc(nbytes, GFP_KERNEL);
208 if (!p)
209 return NULL;
1da177e4
LT		 210 memcpy(p, argp->tmp, nbytes);
211 } else {
73dff8be 212 BUG_ON(p != argp->tmpp);
1da177e4
LT		 213 argp->tmpp = NULL;
214 }
215 if (defer_free(argp, kfree, p)) {
a4db5fe5 216 kfree(p);
1da177e4
LT		 217 return NULL;
218 } else
219 return (char *)p;
220}
221
b37ad28b 222static __be32
1da177e4
LT		 223nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
224{
225 u32 bmlen;
226 DECODE_HEAD;
227
228 bmval[0] = 0;
229 bmval[1] = 0;
7e705706 230 bmval[2] = 0;
1da177e4
LT		 231
232 READ_BUF(4);
233 READ32(bmlen);
234 if (bmlen > 1000)
235 goto xdr_error;
236
237 READ_BUF(bmlen << 2);
238 if (bmlen > 0)
239 READ32(bmval[0]);
240 if (bmlen > 1)
241 READ32(bmval[1]);
7e705706
AA		 242 if (bmlen > 2)
243 READ32(bmval[2]);
1da177e4
LT		 244
245 DECODE_TAIL;
246}
247
b37ad28b 248static __be32
3c8e0316 249nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
c0d6fc8a 250 struct iattr *iattr, struct nfs4_acl **acl)
1da177e4
LT		 251{
252 int expected_len, len = 0;
253 u32 dummy32;
254 char *buf;
b8dd7b9a 255 int host_err;
1da177e4
LT		 256
257 DECODE_HEAD;
258 iattr->ia_valid = 0;
259 if ((status = nfsd4_decode_bitmap(argp, bmval)))
260 return status;
261
1da177e4
LT		 262 READ_BUF(4);
263 READ32(expected_len);
264
265 if (bmval[0] & FATTR4_WORD0_SIZE) {
266 READ_BUF(8);
267 len += 8;
268 READ64(iattr->ia_size);
269 iattr->ia_valid |= ATTR_SIZE;
270 }
271 if (bmval[0] & FATTR4_WORD0_ACL) {
28e05dd8
BF		 272 int nace;
273 struct nfs4_ace *ace;
1da177e4
LT		 274
275 READ_BUF(4); len += 4;
276 READ32(nace);
277
28e05dd8
BF		 278 if (nace > NFS4_ACL_MAX)
279 return nfserr_resource;
280
281 *acl = nfs4_acl_new(nace);
1da177e4 282 if (*acl == NULL) {
b8dd7b9a 283 host_err = -ENOMEM;
1da177e4
LT		 284 goto out_nfserr;
285 }
28e05dd8 286 defer_free(argp, kfree, *acl);
1da177e4 287
28e05dd8
BF		 288 (*acl)->naces = nace;
289 for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) {
1da177e4 290 READ_BUF(16); len += 16;
28e05dd8
BF		 291 READ32(ace->type);
292 READ32(ace->flag);
293 READ32(ace->access_mask);
1da177e4
LT		 294 READ32(dummy32);
295 READ_BUF(dummy32);
296 len += XDR_QUADLEN(dummy32) << 2;
297 READMEM(buf, dummy32);
28e05dd8 298 ace->whotype = nfs4_acl_get_whotype(buf, dummy32);
b8dd7b9a 299 host_err = 0;
28e05dd8
BF		 300 if (ace->whotype != NFS4_ACL_WHO_NAMED)
301 ace->who = 0;
302 else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
b8dd7b9a 303 host_err = nfsd_map_name_to_gid(argp->rqstp,
28e05dd8 304 buf, dummy32, &ace->who);
1da177e4 305 else
b8dd7b9a 306 host_err = nfsd_map_name_to_uid(argp->rqstp,
28e05dd8 307 buf, dummy32, &ace->who);
b8dd7b9a 308 if (host_err)
1da177e4 309 goto out_nfserr;
1da177e4
LT		 310 }
311 } else
312 *acl = NULL;
313 if (bmval[1] & FATTR4_WORD1_MODE) {
314 READ_BUF(4);
315 len += 4;
316 READ32(iattr->ia_mode);
317 iattr->ia_mode &= (S_IFMT | S_IALLUGO);
318 iattr->ia_valid |= ATTR_MODE;
319 }
320 if (bmval[1] & FATTR4_WORD1_OWNER) {
321 READ_BUF(4);
322 len += 4;
323 READ32(dummy32);
324 READ_BUF(dummy32);
325 len += (XDR_QUADLEN(dummy32) << 2);
326 READMEM(buf, dummy32);
b8dd7b9a 327 if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid)))
1da177e4
LT		 328 goto out_nfserr;
329 iattr->ia_valid |= ATTR_UID;
330 }
331 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) {
332 READ_BUF(4);
333 len += 4;
334 READ32(dummy32);
335 READ_BUF(dummy32);
336 len += (XDR_QUADLEN(dummy32) << 2);
337 READMEM(buf, dummy32);
b8dd7b9a 338 if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid)))
1da177e4
LT		 339 goto out_nfserr;
340 iattr->ia_valid |= ATTR_GID;
341 }
342 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
343 READ_BUF(4);
344 len += 4;
345 READ32(dummy32);
346 switch (dummy32) {
347 case NFS4_SET_TO_CLIENT_TIME:
348 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
349 all 32 bits of 'nseconds'. */
350 READ_BUF(12);
351 len += 12;
352 READ32(dummy32);
353 if (dummy32)
354 return nfserr_inval;
355 READ32(iattr->ia_atime.tv_sec);
356 READ32(iattr->ia_atime.tv_nsec);
357 if (iattr->ia_atime.tv_nsec >= (u32)1000000000)
358 return nfserr_inval;
359 iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
360 break;
361 case NFS4_SET_TO_SERVER_TIME:
362 iattr->ia_valid |= ATTR_ATIME;
363 break;
364 default:
365 goto xdr_error;
366 }
367 }
1da177e4
LT		 368 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
369 READ_BUF(4);
370 len += 4;
371 READ32(dummy32);
372 switch (dummy32) {
373 case NFS4_SET_TO_CLIENT_TIME:
374 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
375 all 32 bits of 'nseconds'. */
376 READ_BUF(12);
377 len += 12;
378 READ32(dummy32);
379 if (dummy32)
380 return nfserr_inval;
381 READ32(iattr->ia_mtime.tv_sec);
382 READ32(iattr->ia_mtime.tv_nsec);
383 if (iattr->ia_mtime.tv_nsec >= (u32)1000000000)
384 return nfserr_inval;
385 iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
386 break;
387 case NFS4_SET_TO_SERVER_TIME:
388 iattr->ia_valid |= ATTR_MTIME;
389 break;
390 default:
391 goto xdr_error;
392 }
393 }
3c8e0316
YZ		 394 if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0
395 || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1
396 || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2)
397 READ_BUF(expected_len - len);
398 else if (len != expected_len)
1da177e4
LT		 399 goto xdr_error;
400
401 DECODE_TAIL;
402
403out_nfserr:
b8dd7b9a 404 status = nfserrno(host_err);
1da177e4
LT		 405 goto out;
406}
407
e31a1b66
BH		 408static __be32
409nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid)
410{
411 DECODE_HEAD;
412
413 READ_BUF(sizeof(stateid_t));
414 READ32(sid->si_generation);
415 COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
416
417 DECODE_TAIL;
418}
419
b37ad28b 420static __be32
1da177e4
LT		 421nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)
422{
423 DECODE_HEAD;
424
425 READ_BUF(4);
426 READ32(access->ac_req_access);
427
428 DECODE_TAIL;
429}
430
b37ad28b 431static __be32
1da177e4
LT		 432nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
433{
434 DECODE_HEAD;
435
436 close->cl_stateowner = NULL;
e31a1b66 437 READ_BUF(4);
1da177e4 438 READ32(close->cl_seqid);
e31a1b66 439 return nfsd4_decode_stateid(argp, &close->cl_stateid);
1da177e4
LT		 440
441 DECODE_TAIL;
442}
443
444
b37ad28b 445static __be32
1da177e4
LT		 446nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit)
447{
448 DECODE_HEAD;
449
450 READ_BUF(12);
451 READ64(commit->co_offset);
452 READ32(commit->co_count);
453
454 DECODE_TAIL;
455}
456
b37ad28b 457static __be32
1da177e4
LT		 458nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create)
459{
460 DECODE_HEAD;
461
462 READ_BUF(4);
463 READ32(create->cr_type);
464 switch (create->cr_type) {
465 case NF4LNK:
466 READ_BUF(4);
467 READ32(create->cr_linklen);
468 READ_BUF(create->cr_linklen);
469 SAVEMEM(create->cr_linkname, create->cr_linklen);
470 break;
471 case NF4BLK:
472 case NF4CHR:
473 READ_BUF(8);
474 READ32(create->cr_specdata1);
475 READ32(create->cr_specdata2);
476 break;
477 case NF4SOCK:
478 case NF4FIFO:
479 case NF4DIR:
480 default:
481 break;
482 }
483
484 READ_BUF(4);
485 READ32(create->cr_namelen);
486 READ_BUF(create->cr_namelen);
487 SAVEMEM(create->cr_name, create->cr_namelen);
488 if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
489 return status;
490
3c8e0316
YZ		 491 status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr,
492 &create->cr_acl);
c0d6fc8a 493 if (status)
1da177e4
LT		 494 goto out;
495
496 DECODE_TAIL;
497}
498
b37ad28b 499static inline __be32
1da177e4
LT		 500nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr)
501{
e31a1b66 502 return nfsd4_decode_stateid(argp, &dr->dr_stateid);
1da177e4
LT		 503}
504
b37ad28b 505static inline __be32
1da177e4
LT		 506nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr)
507{
508 return nfsd4_decode_bitmap(argp, getattr->ga_bmval);
509}
510
b37ad28b 511static __be32
1da177e4
LT		 512nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)
513{
514 DECODE_HEAD;
515
516 READ_BUF(4);
517 READ32(link->li_namelen);
518 READ_BUF(link->li_namelen);
519 SAVEMEM(link->li_name, link->li_namelen);
520 if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval)))
521 return status;
522
523 DECODE_TAIL;
524}
525
b37ad28b 526static __be32
1da177e4
LT		 527nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
528{
529 DECODE_HEAD;
530
3a65588a 531 lock->lk_replay_owner = NULL;
1da177e4
LT		 532 /*
533 * type, reclaim(boolean), offset, length, new_lock_owner(boolean)
534 */
535 READ_BUF(28);
536 READ32(lock->lk_type);
537 if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT))
538 goto xdr_error;
539 READ32(lock->lk_reclaim);
540 READ64(lock->lk_offset);
541 READ64(lock->lk_length);
542 READ32(lock->lk_is_new);
543
544 if (lock->lk_is_new) {
e31a1b66 545 READ_BUF(4);
1da177e4 546 READ32(lock->lk_new_open_seqid);
e31a1b66
BH		 547 status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid);
548 if (status)
549 return status;
550 READ_BUF(8 + sizeof(clientid_t));
1da177e4
LT		 551 READ32(lock->lk_new_lock_seqid);
552 COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
553 READ32(lock->lk_new_owner.len);
554 READ_BUF(lock->lk_new_owner.len);
555 READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
556 } else {
e31a1b66
BH		 557 status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid);
558 if (status)
559 return status;
560 READ_BUF(4);
1da177e4
LT		 561 READ32(lock->lk_old_lock_seqid);
562 }
563
564 DECODE_TAIL;
565}
566
b37ad28b 567static __be32
1da177e4
LT		 568nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)
569{
570 DECODE_HEAD;
571
572 READ_BUF(32);
573 READ32(lockt->lt_type);
574 if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT))
575 goto xdr_error;
576 READ64(lockt->lt_offset);
577 READ64(lockt->lt_length);
578 COPYMEM(&lockt->lt_clientid, 8);
579 READ32(lockt->lt_owner.len);
580 READ_BUF(lockt->lt_owner.len);
581 READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
582
60adfc50
AA		 583 if (argp->minorversion && !zero_clientid(&lockt->lt_clientid))
584 return nfserr_inval;
1da177e4
LT		 585 DECODE_TAIL;
586}
587
b37ad28b 588static __be32
1da177e4
LT		 589nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
590{
591 DECODE_HEAD;
592
593 locku->lu_stateowner = NULL;
e31a1b66 594 READ_BUF(8);
1da177e4
LT		 595 READ32(locku->lu_type);
596 if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
597 goto xdr_error;
598 READ32(locku->lu_seqid);
e31a1b66
BH		 599 status = nfsd4_decode_stateid(argp, &locku->lu_stateid);
600 if (status)
601 return status;
602 READ_BUF(16);
1da177e4
LT		 603 READ64(locku->lu_offset);
604 READ64(locku->lu_length);
605
606 DECODE_TAIL;
607}
608
b37ad28b 609static __be32
1da177e4
LT		 610nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup)
611{
612 DECODE_HEAD;
613
614 READ_BUF(4);
615 READ32(lookup->lo_len);
616 READ_BUF(lookup->lo_len);
617 SAVEMEM(lookup->lo_name, lookup->lo_len);
618 if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent)))
619 return status;
620
621 DECODE_TAIL;
622}
623
b37ad28b 624static __be32
1da177e4
LT		 625nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
626{
627 DECODE_HEAD;
628
629 memset(open->op_bmval, 0, sizeof(open->op_bmval));
630 open->op_iattr.ia_valid = 0;
631 open->op_stateowner = NULL;
632
633 /* seqid, share_access, share_deny, clientid, ownerlen */
634 READ_BUF(16 + sizeof(clientid_t));
635 READ32(open->op_seqid);
636 READ32(open->op_share_access);
637 READ32(open->op_share_deny);
638 COPYMEM(&open->op_clientid, sizeof(clientid_t));
639 READ32(open->op_owner.len);
640
641 /* owner, open_flag */
642 READ_BUF(open->op_owner.len + 4);
643 SAVEMEM(open->op_owner.data, open->op_owner.len);
644 READ32(open->op_create);
645 switch (open->op_create) {
646 case NFS4_OPEN_NOCREATE:
647 break;
648 case NFS4_OPEN_CREATE:
649 READ_BUF(4);
650 READ32(open->op_createmode);
651 switch (open->op_createmode) {
652 case NFS4_CREATE_UNCHECKED:
653 case NFS4_CREATE_GUARDED:
c0d6fc8a 654 status = nfsd4_decode_fattr(argp, open->op_bmval,
3c8e0316 655 &open->op_iattr, &open->op_acl);
c0d6fc8a 656 if (status)
1da177e4
LT		 657 goto out;
658 break;
659 case NFS4_CREATE_EXCLUSIVE:
660 READ_BUF(8);
661 COPYMEM(open->op_verf.data, 8);
662 break;
79fb54ab
BH		 663 case NFS4_CREATE_EXCLUSIVE4_1:
664 if (argp->minorversion < 1)
665 goto xdr_error;
666 READ_BUF(8);
667 COPYMEM(open->op_verf.data, 8);
668 status = nfsd4_decode_fattr(argp, open->op_bmval,
3c8e0316 669 &open->op_iattr, &open->op_acl);
79fb54ab
BH		 670 if (status)
671 goto out;
672 break;
1da177e4
LT		 673 default:
674 goto xdr_error;
675 }
676 break;
677 default:
678 goto xdr_error;
679 }
680
681 /* open_claim */
682 READ_BUF(4);
683 READ32(open->op_claim_type);
684 switch (open->op_claim_type) {
685 case NFS4_OPEN_CLAIM_NULL:
686 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
687 READ_BUF(4);
688 READ32(open->op_fname.len);
689 READ_BUF(open->op_fname.len);
690 SAVEMEM(open->op_fname.data, open->op_fname.len);
691 if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
692 return status;
693 break;
694 case NFS4_OPEN_CLAIM_PREVIOUS:
695 READ_BUF(4);
696 READ32(open->op_delegate_type);
697 break;
698 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
e31a1b66
BH		 699 status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
700 if (status)
701 return status;
702 READ_BUF(4);
1da177e4
LT		 703 READ32(open->op_fname.len);
704 READ_BUF(open->op_fname.len);
705 SAVEMEM(open->op_fname.data, open->op_fname.len);
706 if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
707 return status;
708 break;
709 default:
710 goto xdr_error;
711 }
712
713 DECODE_TAIL;
714}
715
b37ad28b 716static __be32
1da177e4
LT		 717nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf)
718{
719 DECODE_HEAD;
720
721 open_conf->oc_stateowner = NULL;
e31a1b66
BH		 722 status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);
723 if (status)
724 return status;
725 READ_BUF(4);
1da177e4
LT		 726 READ32(open_conf->oc_seqid);
727
728 DECODE_TAIL;
729}
730
b37ad28b 731static __be32
1da177e4
LT		 732nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down)
733{
734 DECODE_HEAD;
735
736 open_down->od_stateowner = NULL;
e31a1b66
BH		 737 status = nfsd4_decode_stateid(argp, &open_down->od_stateid);
738 if (status)
739 return status;
740 READ_BUF(12);
1da177e4
LT		 741 READ32(open_down->od_seqid);
742 READ32(open_down->od_share_access);
743 READ32(open_down->od_share_deny);
744
745 DECODE_TAIL;
746}
747
b37ad28b 748static __be32
1da177e4
LT		 749nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh)
750{
751 DECODE_HEAD;
752
753 READ_BUF(4);
754 READ32(putfh->pf_fhlen);
755 if (putfh->pf_fhlen > NFS4_FHSIZE)
756 goto xdr_error;
757 READ_BUF(putfh->pf_fhlen);
758 SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen);
759
760 DECODE_TAIL;
761}
762
b37ad28b 763static __be32
1da177e4
LT		 764nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read)
765{
766 DECODE_HEAD;
767
e31a1b66
BH		 768 status = nfsd4_decode_stateid(argp, &read->rd_stateid);
769 if (status)
770 return status;
771 READ_BUF(12);
1da177e4
LT		 772 READ64(read->rd_offset);
773 READ32(read->rd_length);
774
775 DECODE_TAIL;
776}
777
b37ad28b 778static __be32
1da177e4
LT		 779nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir)
780{
781 DECODE_HEAD;
782
783 READ_BUF(24);
784 READ64(readdir->rd_cookie);
785 COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data));
786 READ32(readdir->rd_dircount); /* just in case you needed a useless field... */
787 READ32(readdir->rd_maxcount);
788 if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval)))
789 goto out;
790
791 DECODE_TAIL;
792}
793
b37ad28b 794static __be32
1da177e4
LT		 795nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove)
796{
797 DECODE_HEAD;
798
799 READ_BUF(4);
800 READ32(remove->rm_namelen);
801 READ_BUF(remove->rm_namelen);
802 SAVEMEM(remove->rm_name, remove->rm_namelen);
803 if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent)))
804 return status;
805
806 DECODE_TAIL;
807}
808
b37ad28b 809static __be32
1da177e4
LT		 810nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename)
811{
812 DECODE_HEAD;
813
814 READ_BUF(4);
815 READ32(rename->rn_snamelen);
816 READ_BUF(rename->rn_snamelen + 4);
817 SAVEMEM(rename->rn_sname, rename->rn_snamelen);
818 READ32(rename->rn_tnamelen);
819 READ_BUF(rename->rn_tnamelen);
820 SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
821 if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent)))
822 return status;
823 if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval)))
824 return status;
825
826 DECODE_TAIL;
827}
828
b37ad28b 829static __be32
1da177e4
LT		 830nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)
831{
832 DECODE_HEAD;
833
834 READ_BUF(sizeof(clientid_t));
835 COPYMEM(clientid, sizeof(clientid_t));
836
837 DECODE_TAIL;
838}
839
dcb488a3
AA		 840static __be32
841nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
842 struct nfsd4_secinfo *secinfo)
843{
844 DECODE_HEAD;
845
846 READ_BUF(4);
847 READ32(secinfo->si_namelen);
848 READ_BUF(secinfo->si_namelen);
849 SAVEMEM(secinfo->si_name, secinfo->si_namelen);
850 status = check_filename(secinfo->si_name, secinfo->si_namelen,
851 nfserr_noent);
852 if (status)
853 return status;
854 DECODE_TAIL;
855}
856
b37ad28b 857static __be32
1da177e4
LT		 858nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
859{
e31a1b66 860 __be32 status;
1da177e4 861
e31a1b66
BH		 862 status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
863 if (status)
864 return status;
3c8e0316
YZ		 865 return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr,
866 &setattr->sa_acl);
1da177e4
LT		 867}
868
b37ad28b 869static __be32
1da177e4
LT		 870nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid)
871{
872 DECODE_HEAD;
873
874 READ_BUF(12);
875 COPYMEM(setclientid->se_verf.data, 8);
876 READ32(setclientid->se_namelen);
877
878 READ_BUF(setclientid->se_namelen + 8);
879 SAVEMEM(setclientid->se_name, setclientid->se_namelen);
880 READ32(setclientid->se_callback_prog);
881 READ32(setclientid->se_callback_netid_len);
882
883 READ_BUF(setclientid->se_callback_netid_len + 4);
884 SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len);
885 READ32(setclientid->se_callback_addr_len);
886
887 READ_BUF(setclientid->se_callback_addr_len + 4);
888 SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len);
889 READ32(setclientid->se_callback_ident);
890
891 DECODE_TAIL;
892}
893
b37ad28b 894static __be32
1da177e4
LT		 895nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c)
896{
897 DECODE_HEAD;
898
899 READ_BUF(8 + sizeof(nfs4_verifier));
900 COPYMEM(&scd_c->sc_clientid, 8);
901 COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier));
902
903 DECODE_TAIL;
904}
905
906/* Also used for NVERIFY */
b37ad28b 907static __be32
1da177e4
LT		 908nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify)
909{
910#if 0
911 struct nfsd4_compoundargs save = {
912 .p = argp->p,
913 .end = argp->end,
914 .rqstp = argp->rqstp,
915 };
916 u32 ve_bmval[2];
917 struct iattr ve_iattr; /* request */
918 struct nfs4_acl *ve_acl; /* request */
919#endif
920 DECODE_HEAD;
921
922 if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval)))
923 goto out;
924
925 /* For convenience's sake, we compare raw xdr'd attributes in
926 * nfsd4_proc_verify; however we still decode here just to return
927 * correct error in case of bad xdr. */
928#if 0
929 status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl);
930 if (status == nfserr_inval) {
931 status = nfserrno(status);
932 goto out;
933 }
934#endif
935 READ_BUF(4);
936 READ32(verify->ve_attrlen);
937 READ_BUF(verify->ve_attrlen);
938 SAVEMEM(verify->ve_attrval, verify->ve_attrlen);
939
940 DECODE_TAIL;
941}
942
b37ad28b 943static __be32
1da177e4
LT		 944nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
945{
946 int avail;
947 int v;
948 int len;
949 DECODE_HEAD;
950
e31a1b66
BH		 951 status = nfsd4_decode_stateid(argp, &write->wr_stateid);
952 if (status)
953 return status;
954 READ_BUF(16);
1da177e4
LT		 955 READ64(write->wr_offset);
956 READ32(write->wr_stable_how);
957 if (write->wr_stable_how > 2)
958 goto xdr_error;
959 READ32(write->wr_buflen);
960
961 /* Sorry .. no magic macros for this.. *
962 * READ_BUF(write->wr_buflen);
963 * SAVEMEM(write->wr_buf, write->wr_buflen);
964 */
965 avail = (char*)argp->end - (char*)argp->p;
966 if (avail + argp->pagelen < write->wr_buflen) {
817cb9d4
CL		 967 dprintk("NFSD: xdr error (%s:%d)\n",
968 __FILE__, __LINE__);
1da177e4
LT		 969 goto xdr_error;
970 }
3cc03b16
N		 971 argp->rqstp->rq_vec[0].iov_base = p;
972 argp->rqstp->rq_vec[0].iov_len = avail;
1da177e4
LT		 973 v = 0;
974 len = write->wr_buflen;
3cc03b16
N		 975 while (len > argp->rqstp->rq_vec[v].iov_len) {
976 len -= argp->rqstp->rq_vec[v].iov_len;
1da177e4 977 v++;
3cc03b16 978 argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]);
1da177e4
LT		 979 argp->pagelist++;
980 if (argp->pagelen >= PAGE_SIZE) {
3cc03b16 981 argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE;
1da177e4
LT		 982 argp->pagelen -= PAGE_SIZE;
983 } else {
3cc03b16 984 argp->rqstp->rq_vec[v].iov_len = argp->pagelen;
1da177e4
LT		 985 argp->pagelen -= len;
986 }
987 }
2ebbc012
AV		 988 argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len);
989 argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2));
3cc03b16 990 argp->rqstp->rq_vec[v].iov_len = len;
1da177e4
LT		 991 write->wr_vlen = v+1;
992
993 DECODE_TAIL;
994}
995
b37ad28b 996static __be32
1da177e4
LT		 997nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner)
998{
999 DECODE_HEAD;
1000
1001 READ_BUF(12);
1002 COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t));
1003 READ32(rlockowner->rl_owner.len);
1004 READ_BUF(rlockowner->rl_owner.len);
1005 READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
1006
60adfc50
AA		 1007 if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))
1008 return nfserr_inval;
1da177e4
LT		 1009 DECODE_TAIL;
1010}
1011
2db134eb
AA		 1012static __be32
1013nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
0733d213 1014 struct nfsd4_exchange_id *exid)
2db134eb 1015{
0733d213
AA		 1016 int dummy;
1017 DECODE_HEAD;
1018
1019 READ_BUF(NFS4_VERIFIER_SIZE);
1020 COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
1021
1022 READ_BUF(4);
1023 READ32(exid->clname.len);
1024
1025 READ_BUF(exid->clname.len);
1026 SAVEMEM(exid->clname.data, exid->clname.len);
1027
1028 READ_BUF(4);
1029 READ32(exid->flags);
1030
1031 /* Ignore state_protect4_a */
1032 READ_BUF(4);
1033 READ32(exid->spa_how);
1034 switch (exid->spa_how) {
1035 case SP4_NONE:
1036 break;
1037 case SP4_MACH_CRED:
1038 /* spo_must_enforce */
1039 READ_BUF(4);
1040 READ32(dummy);
1041 READ_BUF(dummy * 4);
1042 p += dummy;
1043
1044 /* spo_must_allow */
1045 READ_BUF(4);
1046 READ32(dummy);
1047 READ_BUF(dummy * 4);
1048 p += dummy;
1049 break;
1050 case SP4_SSV:
1051 /* ssp_ops */
1052 READ_BUF(4);
1053 READ32(dummy);
1054 READ_BUF(dummy * 4);
1055 p += dummy;
1056
1057 READ_BUF(4);
1058 READ32(dummy);
1059 READ_BUF(dummy * 4);
1060 p += dummy;
1061
1062 /* ssp_hash_algs<> */
1063 READ_BUF(4);
1064 READ32(dummy);
1065 READ_BUF(dummy);
1066 p += XDR_QUADLEN(dummy);
1067
1068 /* ssp_encr_algs<> */
1069 READ_BUF(4);
1070 READ32(dummy);
1071 READ_BUF(dummy);
1072 p += XDR_QUADLEN(dummy);
1073
1074 /* ssp_window and ssp_num_gss_handles */
1075 READ_BUF(8);
1076 READ32(dummy);
1077 READ32(dummy);
1078 break;
1079 default:
1080 goto xdr_error;
1081 }
1082
1083 /* Ignore Implementation ID */
1084 READ_BUF(4); /* nfs_impl_id4 array length */
1085 READ32(dummy);
1086
1087 if (dummy > 1)
1088 goto xdr_error;
1089
1090 if (dummy == 1) {
1091 /* nii_domain */
1092 READ_BUF(4);
1093 READ32(dummy);
1094 READ_BUF(dummy);
1095 p += XDR_QUADLEN(dummy);
1096
1097 /* nii_name */
1098 READ_BUF(4);
1099 READ32(dummy);
1100 READ_BUF(dummy);
1101 p += XDR_QUADLEN(dummy);
1102
1103 /* nii_date */
1104 READ_BUF(12);
1105 p += 3;
1106 }
1107 DECODE_TAIL;
2db134eb
AA		 1108}
1109
1110static __be32
1111nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
1112 struct nfsd4_create_session *sess)
1113{
ec6b5d7b
AA		 1114 DECODE_HEAD;
1115
1116 u32 dummy;
1117 char *machine_name;
1118 int i;
1119 int nr_secflavs;
1120
1121 READ_BUF(16);
1122 COPYMEM(&sess->clientid, 8);
1123 READ32(sess->seqid);
1124 READ32(sess->flags);
1125
1126 /* Fore channel attrs */
1127 READ_BUF(28);
1128 READ32(dummy); /* headerpadsz is always 0 */
1129 READ32(sess->fore_channel.maxreq_sz);
1130 READ32(sess->fore_channel.maxresp_sz);
1131 READ32(sess->fore_channel.maxresp_cached);
1132 READ32(sess->fore_channel.maxops);
1133 READ32(sess->fore_channel.maxreqs);
1134 READ32(sess->fore_channel.nr_rdma_attrs);
1135 if (sess->fore_channel.nr_rdma_attrs == 1) {
1136 READ_BUF(4);
1137 READ32(sess->fore_channel.rdma_attrs);
1138 } else if (sess->fore_channel.nr_rdma_attrs > 1) {
1139 dprintk("Too many fore channel attr bitmaps!\n");
1140 goto xdr_error;
1141 }
1142
1143 /* Back channel attrs */
1144 READ_BUF(28);
1145 READ32(dummy); /* headerpadsz is always 0 */
1146 READ32(sess->back_channel.maxreq_sz);
1147 READ32(sess->back_channel.maxresp_sz);
1148 READ32(sess->back_channel.maxresp_cached);
1149 READ32(sess->back_channel.maxops);
1150 READ32(sess->back_channel.maxreqs);
1151 READ32(sess->back_channel.nr_rdma_attrs);
1152 if (sess->back_channel.nr_rdma_attrs == 1) {
1153 READ_BUF(4);
1154 READ32(sess->back_channel.rdma_attrs);
1155 } else if (sess->back_channel.nr_rdma_attrs > 1) {
1156 dprintk("Too many back channel attr bitmaps!\n");
1157 goto xdr_error;
1158 }
1159
1160 READ_BUF(8);
1161 READ32(sess->callback_prog);
1162
1163 /* callback_sec_params4 */
1164 READ32(nr_secflavs);
1165 for (i = 0; i < nr_secflavs; ++i) {
1166 READ_BUF(4);
1167 READ32(dummy);
1168 switch (dummy) {
1169 case RPC_AUTH_NULL:
1170 /* Nothing to read */
1171 break;
1172 case RPC_AUTH_UNIX:
1173 READ_BUF(8);
1174 /* stamp */
1175 READ32(dummy);
1176
1177 /* machine name */
1178 READ32(dummy);
1179 READ_BUF(dummy);
1180 SAVEMEM(machine_name, dummy);
1181
1182 /* uid, gid */
1183 READ_BUF(8);
1184 READ32(sess->uid);
1185 READ32(sess->gid);
1186
1187 /* more gids */
1188 READ_BUF(4);
1189 READ32(dummy);
1190 READ_BUF(dummy * 4);
1191 for (i = 0; i < dummy; ++i)
1192 READ32(dummy);
1193 break;
1194 case RPC_AUTH_GSS:
1195 dprintk("RPC_AUTH_GSS callback secflavor "
1196 "not supported!\n");
1197 READ_BUF(8);
1198 /* gcbp_service */
1199 READ32(dummy);
1200 /* gcbp_handle_from_server */
1201 READ32(dummy);
1202 READ_BUF(dummy);
1203 p += XDR_QUADLEN(dummy);
1204 /* gcbp_handle_from_client */
1205 READ_BUF(4);
1206 READ32(dummy);
1207 READ_BUF(dummy);
1208 p += XDR_QUADLEN(dummy);
1209 break;
1210 default:
1211 dprintk("Illegal callback secflavor\n");
1212 return nfserr_inval;
1213 }
1214 }
1215 DECODE_TAIL;
2db134eb
AA		 1216}
1217
1218static __be32
1219nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
1220 struct nfsd4_destroy_session *destroy_session)
1221{
e10e0cfc
BH		 1222 DECODE_HEAD;
1223 READ_BUF(NFS4_MAX_SESSIONID_LEN);
1224 COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1225
1226 DECODE_TAIL;
2db134eb
AA		 1227}
1228
1229static __be32
1230nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
1231 struct nfsd4_sequence *seq)
1232{
b85d4c01
BH		 1233 DECODE_HEAD;
1234
1235 READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
1236 COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1237 READ32(seq->seqid);
1238 READ32(seq->slotid);
1239 READ32(seq->maxslots);
1240 READ32(seq->cachethis);
1241
1242 DECODE_TAIL;
2db134eb
AA		 1243}
1244
347e0ad9
BH		 1245static __be32
1246nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)
1247{
1248 return nfs_ok;
1249}
1250
3c375c6f
BH		 1251static __be32
1252nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
1253{
1e685ec2 1254 return nfserr_notsupp;
3c375c6f
BH		 1255}
1256
347e0ad9
BH		 1257typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
1258
1259static nfsd4_dec nfsd4_dec_ops[] = {
ad1060c8
BF		 1260 [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
1261 [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
1262 [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
1263 [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
1264 [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
1265 [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
1266 [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
1267 [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
1268 [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
1269 [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
1270 [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
1271 [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
1272 [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
1273 [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
1274 [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1275 [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
1276 [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
1277 [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm,
1278 [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
1279 [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
a1c8c4d1 1280 [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop,
ad1060c8
BF		 1281 [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
1282 [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
1283 [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
1284 [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
1285 [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
1286 [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
1287 [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew,
1288 [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
1289 [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
1290 [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
1291 [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
1292 [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid,
1293 [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm,
1294 [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1295 [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
1296 [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner,
347e0ad9
BH		 1297};
1298
2db134eb 1299static nfsd4_dec nfsd41_dec_ops[] = {
9064caae
RD		 1300 [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
1301 [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
1302 [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
1303 [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
1304 [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
1305 [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
1306 [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
1307 [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
1308 [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
1309 [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
1310 [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
1311 [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
1312 [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
1313 [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
1314 [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1315 [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
1316 [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
1317 [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp,
1318 [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
1319 [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
1320 [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp,
1321 [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
1322 [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
1323 [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
1324 [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
1325 [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
1326 [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
1327 [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp,
1328 [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
1329 [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
1330 [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
1331 [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
1332 [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
1333 [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp,
1334 [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1335 [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
1336 [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp,
2db134eb
AA		 1337
1338 /* new operations for NFSv4.1 */
9064caae
RD		 1339 [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp,
1340 [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp,
1341 [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id,
1342 [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session,
1343 [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session,
1344 [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
1345 [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
1346 [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp,
1347 [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp,
1348 [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp,
1349 [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp,
1350 [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp,
1351 [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_notsupp,
1352 [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence,
1353 [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp,
1354 [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
1355 [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
1356 [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
1357 [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_notsupp,
2db134eb
AA		 1358};
1359
f2feb96b
BH		 1360struct nfsd4_minorversion_ops {
1361 nfsd4_dec *decoders;
1362 int nops;
1363};
1364
1365static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
ad1060c8 1366 [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
2db134eb 1367 [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) },
f2feb96b
BH		 1368};
1369
b37ad28b 1370static __be32
1da177e4
LT		 1371nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
1372{
1373 DECODE_HEAD;
1374 struct nfsd4_op *op;
f2feb96b 1375 struct nfsd4_minorversion_ops *ops;
1da177e4
LT		 1376 int i;
1377
1378 /*
1379 * XXX: According to spec, we should check the tag
1380 * for UTF-8 compliance. I'm postponing this for
1381 * now because it seems that some clients do use
1382 * binary tags.
1383 */
1384 READ_BUF(4);
1385 READ32(argp->taglen);
1386 READ_BUF(argp->taglen + 8);
1387 SAVEMEM(argp->tag, argp->taglen);
1388 READ32(argp->minorversion);
1389 READ32(argp->opcnt);
1390
1391 if (argp->taglen > NFSD4_MAX_TAGLEN)
1392 goto xdr_error;
1393 if (argp->opcnt > 100)
1394 goto xdr_error;
1395
e8c96f8c 1396 if (argp->opcnt > ARRAY_SIZE(argp->iops)) {
1da177e4
LT		 1397 argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL);
1398 if (!argp->ops) {
1399 argp->ops = argp->iops;
817cb9d4 1400 dprintk("nfsd: couldn't allocate room for COMPOUND\n");
1da177e4
LT		 1401 goto xdr_error;
1402 }
1403 }
1404
f2feb96b 1405 if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion))
30cff1ff
BH		 1406 argp->opcnt = 0;
1407
f2feb96b 1408 ops = &nfsd4_minorversion[argp->minorversion];
1da177e4
LT		 1409 for (i = 0; i < argp->opcnt; i++) {
1410 op = &argp->ops[i];
1411 op->replay = NULL;
1412
1413 /*
1414 * We can't use READ_BUF() here because we need to handle
1415 * a missing opcode as an OP_WRITE + 1. So we need to check
1416 * to see if we're truly at the end of our buffer or if there
1417 * is another page we need to flip to.
1418 */
1419
1420 if (argp->p == argp->end) {
1421 if (argp->pagelen < 4) {
1422 /* There isn't an opcode still on the wire */
1423 op->opnum = OP_WRITE + 1;
1424 op->status = nfserr_bad_xdr;
1425 argp->opcnt = i+1;
1426 break;
1427 }
1428
1429 /*
1430 * False alarm. We just hit a page boundary, but there
1431 * is still data available. Move pointer across page
1432 * boundary. *snip from READ_BUF*
1433 */
1434 argp->p = page_address(argp->pagelist[0]);
1435 argp->pagelist++;
1436 if (argp->pagelen < PAGE_SIZE) {
1437 argp->end = p + (argp->pagelen>>2);
1438 argp->pagelen = 0;
1439 } else {
1440 argp->end = p + (PAGE_SIZE>>2);
1441 argp->pagelen -= PAGE_SIZE;
1442 }
1443 }
1444 op->opnum = ntohl(*argp->p++);
1445
f2feb96b
BH		 1446 if (op->opnum >= OP_ACCESS && op->opnum < ops->nops)
1447 op->status = ops->decoders[op->opnum](argp, &op->u);
347e0ad9 1448 else {
1da177e4
LT		 1449 op->opnum = OP_ILLEGAL;
1450 op->status = nfserr_op_illegal;
1da177e4
LT		 1451 }
1452
1453 if (op->status) {
1454 argp->opcnt = i+1;
1455 break;
1456 }
1457 }
1458
1459 DECODE_TAIL;
1460}
1da177e4 1461
1da177e4
LT		 1462#define WRITE32(n) *p++ = htonl(n)
1463#define WRITE64(n) do { \
1464 *p++ = htonl((u32)((n) >> 32)); \
1465 *p++ = htonl((u32)(n)); \
1466} while (0)
5108b276 1467#define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
1da177e4
LT		 1468 *(p + XDR_QUADLEN(nbytes) -1) = 0; \
1469 memcpy(p, ptr, nbytes); \
1470 p += XDR_QUADLEN(nbytes); \
5108b276 1471}} while (0)
c654b8a9
BF		 1472
1473static void write32(__be32 **p, u32 n)
1474{
1475 *(*p)++ = n;
1476}
1477
1478static void write64(__be32 **p, u64 n)
1479{
1480 write32(p, (u32)(n >> 32));
1481 write32(p, (u32)n);
1482}
1483
1484static void write_change(__be32 **p, struct kstat *stat, struct inode *inode)
1485{
1486 if (IS_I_VERSION(inode)) {
1487 write64(p, inode->i_version);
1488 } else {
1489 write32(p, stat->ctime.tv_sec);
1490 write32(p, stat->ctime.tv_nsec);
1491 }
1492}
1493
1494static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
1495{
1496 write32(p, c->atomic);
1497 if (c->change_supported) {
1498 write64(p, c->before_change);
1499 write64(p, c->after_change);
1500 } else {
1501 write32(p, c->before_ctime_sec);
1502 write32(p, c->before_ctime_nsec);
1503 write32(p, c->after_ctime_sec);
1504 write32(p, c->after_ctime_nsec);
1505 }
1506}
1da177e4
LT		 1507
1508#define RESERVE_SPACE(nbytes) do { \
1509 p = resp->p; \
1510 BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
1511} while (0)
1512#define ADJUST_ARGS() resp->p = p
1513
1514/*
1515 * Header routine to setup seqid operation replay cache
1516 */
1517#define ENCODE_SEQID_OP_HEAD \
2ebbc012 1518 __be32 *save; \
1da177e4
LT		 1519 \
1520 save = resp->p;
1521
1522/*
7fb64cee
N		 1523 * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This
1524 * is where sequence id's are incremented, and the replay cache is filled.
1525 * Note that we increment sequence id's here, at the last moment, so we're sure
1526 * we know whether the error to be returned is a sequence id mutating error.
1da177e4
LT		 1527 */
1528
1529#define ENCODE_SEQID_OP_TAIL(stateowner) do { \
1530 if (seqid_mutating_err(nfserr) && stateowner) { \
bd9aac52 1531 stateowner->so_seqid++; \
1da177e4
LT		 1532 stateowner->so_replay.rp_status = nfserr; \
1533 stateowner->so_replay.rp_buflen = \
1534 (((char *)(resp)->p - (char *)save)); \
1535 memcpy(stateowner->so_replay.rp_buf, save, \
1536 stateowner->so_replay.rp_buflen); \
1537 } } while (0);
1538
81c3f413
BF		 1539/* Encode as an array of strings the string given with components
1540 * seperated @sep.
1541 */
b37ad28b 1542static __be32 nfsd4_encode_components(char sep, char *components,
2ebbc012 1543 __be32 **pp, int *buflen)
81c3f413 1544{
2ebbc012
AV		 1545 __be32 *p = *pp;
1546 __be32 *countp = p;
81c3f413
BF		 1547 int strlen, count=0;
1548 char *str, *end;
1549
1550 dprintk("nfsd4_encode_components(%s)\n", components);
1551 if ((*buflen -= 4) < 0)
1552 return nfserr_resource;
1553 WRITE32(0); /* We will fill this in with @count later */
1554 end = str = components;
1555 while (*end) {
1556 for (; *end && (*end != sep); end++)
1557 ; /* Point to end of component */
1558 strlen = end - str;
1559 if (strlen) {
1560 if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0)
1561 return nfserr_resource;
1562 WRITE32(strlen);
1563 WRITEMEM(str, strlen);
1564 count++;
1565 }
1566 else
1567 end++;
1568 str = end;
1569 }
1570 *pp = p;
1571 p = countp;
1572 WRITE32(count);
1573 return 0;
1574}
1575
1576/*
1577 * encode a location element of a fs_locations structure
1578 */
b37ad28b 1579static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location,
2ebbc012 1580 __be32 **pp, int *buflen)
81c3f413 1581{
b37ad28b 1582 __be32 status;
2ebbc012 1583 __be32 *p = *pp;
81c3f413
BF		 1584
1585 status = nfsd4_encode_components(':', location->hosts, &p, buflen);
1586 if (status)
1587 return status;
1588 status = nfsd4_encode_components('/', location->path, &p, buflen);
1589 if (status)
1590 return status;
1591 *pp = p;
1592 return 0;
1593}
1594
1595/*
1596 * Return the path to an export point in the pseudo filesystem namespace
1597 * Returned string is safe to use as long as the caller holds a reference
1598 * to @exp.
1599 */
b37ad28b 1600static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat)
81c3f413
BF		 1601{
1602 struct svc_fh tmp_fh;
2671a4bf
TM		 1603 char *path = NULL, *rootpath;
1604 size_t rootlen;
81c3f413
BF		 1605
1606 fh_init(&tmp_fh, NFS4_FHSIZE);
df547efb 1607 *stat = exp_pseudoroot(rqstp, &tmp_fh);
cc45f017
AV		 1608 if (*stat)
1609 return NULL;
54775491 1610 rootpath = tmp_fh.fh_export->ex_pathname;
81c3f413 1611
54775491 1612 path = exp->ex_pathname;
81c3f413 1613
2671a4bf
TM		 1614 rootlen = strlen(rootpath);
1615 if (strncmp(path, rootpath, rootlen)) {
817cb9d4 1616 dprintk("nfsd: fs_locations failed;"
81c3f413 1617 "%s is not contained in %s\n", path, rootpath);
cc45f017 1618 *stat = nfserr_notsupp;
2671a4bf
TM		 1619 path = NULL;
1620 goto out;
81c3f413 1621 }
2671a4bf
TM		 1622 path += rootlen;
1623out:
1624 fh_put(&tmp_fh);
1625 return path;
81c3f413
BF		 1626}
1627
1628/*
1629 * encode a fs_locations structure
1630 */
b37ad28b 1631static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
81c3f413 1632 struct svc_export *exp,
2ebbc012 1633 __be32 **pp, int *buflen)
81c3f413 1634{
b37ad28b 1635 __be32 status;
cc45f017 1636 int i;
2ebbc012 1637 __be32 *p = *pp;
81c3f413 1638 struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
cc45f017 1639 char *root = nfsd4_path(rqstp, exp, &status);
81c3f413 1640
cc45f017
AV		 1641 if (status)
1642 return status;
81c3f413
BF		 1643 status = nfsd4_encode_components('/', root, &p, buflen);
1644 if (status)
1645 return status;
1646 if ((*buflen -= 4) < 0)
1647 return nfserr_resource;
1648 WRITE32(fslocs->locations_count);
1649 for (i=0; i<fslocs->locations_count; i++) {
1650 status = nfsd4_encode_fs_location4(&fslocs->locations[i],
1651 &p, buflen);
1652 if (status)
1653 return status;
1654 }
1655 *pp = p;
1656 return 0;
1657}
1da177e4
LT		 1658
1659static u32 nfs4_ftypes[16] = {
1660 NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
1661 NF4DIR, NF4BAD, NF4BLK, NF4BAD,
1662 NF4REG, NF4BAD, NF4LNK, NF4BAD,
1663 NF4SOCK, NF4BAD, NF4LNK, NF4BAD,
1664};
1665
b37ad28b 1666static __be32
1da177e4 1667nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
2ebbc012 1668 __be32 **p, int *buflen)
1da177e4
LT		 1669{
1670 int status;
1671
1672 if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4)
1673 return nfserr_resource;
1674 if (whotype != NFS4_ACL_WHO_NAMED)
1675 status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1));
1676 else if (group)
1677 status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1));
1678 else
1679 status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1));
1680 if (status < 0)
1681 return nfserrno(status);
1682 *p = xdr_encode_opaque(*p, NULL, status);
1683 *buflen -= (XDR_QUADLEN(status) << 2) + 4;
1684 BUG_ON(*buflen < 0);
1685 return 0;
1686}
1687
b37ad28b 1688static inline __be32
2ebbc012 1689nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen)
1da177e4
LT		 1690{
1691 return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen);
1692}
1693
b37ad28b 1694static inline __be32
2ebbc012 1695nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen)
1da177e4
LT		 1696{
1697 return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen);
1698}
1699
b37ad28b 1700static inline __be32
1da177e4 1701nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
2ebbc012 1702 __be32 **p, int *buflen)
1da177e4
LT		 1703{
1704 return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen);
1705}
1706
42ca0993
BF		 1707#define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
1708 FATTR4_WORD0_RDATTR_ERROR)
1709#define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
1710
b37ad28b 1711static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
42ca0993
BF		 1712{
1713 /* As per referral draft: */
1714 if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS ||
1715 *bmval1 & ~WORD1_ABSENT_FS_ATTRS) {
1716 if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR ||
1717 *bmval0 & FATTR4_WORD0_FS_LOCATIONS)
1718 *rdattr_err = NFSERR_MOVED;
1719 else
1720 return nfserr_moved;
1721 }
1722 *bmval0 &= WORD0_ABSENT_FS_ATTRS;
1723 *bmval1 &= WORD1_ABSENT_FS_ATTRS;
1724 return 0;
1725}
1da177e4
LT		 1726
1727/*
1728 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
1729 * ourselves.
1730 *
1731 * @countp is the buffer size in _words_; upon successful return this becomes
1732 * replaced with the number of words written.
1733 */
b37ad28b 1734__be32
1da177e4 1735nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
2ebbc012 1736 struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval,
406a7ea9 1737 struct svc_rqst *rqstp, int ignore_crossmnt)
1da177e4
LT		 1738{
1739 u32 bmval0 = bmval[0];
1740 u32 bmval1 = bmval[1];
7e705706 1741 u32 bmval2 = bmval[2];
1da177e4
LT		 1742 struct kstat stat;
1743 struct svc_fh tempfh;
1744 struct kstatfs statfs;
1745 int buflen = *countp << 2;
2ebbc012 1746 __be32 *attrlenp;
1da177e4
LT		 1747 u32 dummy;
1748 u64 dummy64;
42ca0993 1749 u32 rdattr_err = 0;
2ebbc012 1750 __be32 *p = buffer;
b37ad28b 1751 __be32 status;
b8dd7b9a 1752 int err;
1da177e4
LT		 1753 int aclsupport = 0;
1754 struct nfs4_acl *acl = NULL;
7e705706
AA		 1755 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1756 u32 minorversion = resp->cstate.minorversion;
1da177e4
LT		 1757
1758 BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
7e705706
AA		 1759 BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion));
1760 BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion));
1761 BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
1da177e4 1762
42ca0993 1763 if (exp->ex_fslocs.migrated) {
7e705706 1764 BUG_ON(bmval[2]);
42ca0993
BF		 1765 status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
1766 if (status)
1767 goto out;
1768 }
1769
54775491 1770 err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
b8dd7b9a 1771 if (err)
1da177e4 1772 goto out_nfserr;
a16e92ed
BF		 1773 if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
1774 FATTR4_WORD0_MAXNAME)) ||
1da177e4
LT		 1775 (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
1776 FATTR4_WORD1_SPACE_TOTAL))) {
b8dd7b9a
AV		 1777 err = vfs_statfs(dentry, &statfs);
1778 if (err)
1da177e4
LT		 1779 goto out_nfserr;
1780 }
1781 if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) {
1782 fh_init(&tempfh, NFS4_FHSIZE);
1783 status = fh_compose(&tempfh, exp, dentry, NULL);
1784 if (status)
1785 goto out;
1786 fhp = &tempfh;
1787 }
1788 if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT
1789 | FATTR4_WORD0_SUPPORTED_ATTRS)) {
b8dd7b9a
AV		 1790 err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
1791 aclsupport = (err == 0);
1da177e4 1792 if (bmval0 & FATTR4_WORD0_ACL) {
b8dd7b9a 1793 if (err == -EOPNOTSUPP)
1da177e4 1794 bmval0 &= ~FATTR4_WORD0_ACL;
b8dd7b9a 1795 else if (err == -EINVAL) {
1da177e4
LT		 1796 status = nfserr_attrnotsupp;
1797 goto out;
b8dd7b9a 1798 } else if (err != 0)
1da177e4
LT		 1799 goto out_nfserr;
1800 }
1801 }
1802 if ((buflen -= 16) < 0)
1803 goto out_resource;
1804
7e705706
AA		 1805 if (unlikely(bmval2)) {
1806 WRITE32(3);
1807 WRITE32(bmval0);
1808 WRITE32(bmval1);
1809 WRITE32(bmval2);
1810 } else if (likely(bmval1)) {
1811 WRITE32(2);
1812 WRITE32(bmval0);
1813 WRITE32(bmval1);
1814 } else {
1815 WRITE32(1);
1816 WRITE32(bmval0);
1817 }
1da177e4
LT		 1818 attrlenp = p++; /* to be backfilled later */
1819
1820 if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
7e705706
AA		 1821 u32 word0 = nfsd_suppattrs0(minorversion);
1822 u32 word1 = nfsd_suppattrs1(minorversion);
1823 u32 word2 = nfsd_suppattrs2(minorversion);
1824
1da177e4
LT		 1825 if ((buflen -= 12) < 0)
1826 goto out_resource;
42ca0993
BF		 1827 if (!aclsupport)
1828 word0 &= ~FATTR4_WORD0_ACL;
7e705706
AA		 1829 if (!word2) {
1830 WRITE32(2);
1831 WRITE32(word0);
1832 WRITE32(word1);
1833 } else {
1834 WRITE32(3);
1835 WRITE32(word0);
1836 WRITE32(word1);
1837 WRITE32(word2);
1838 }
1da177e4
LT		 1839 }
1840 if (bmval0 & FATTR4_WORD0_TYPE) {
1841 if ((buflen -= 4) < 0)
1842 goto out_resource;
1843 dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12];
1844 if (dummy == NF4BAD)
1845 goto out_serverfault;
1846 WRITE32(dummy);
1847 }
1848 if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) {
1849 if ((buflen -= 4) < 0)
1850 goto out_resource;
49640001 1851 if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)
e34ac862 1852 WRITE32(NFS4_FH_PERSISTENT);
49640001 1853 else
e34ac862 1854 WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
1da177e4
LT		 1855 }
1856 if (bmval0 & FATTR4_WORD0_CHANGE) {
1da177e4
LT		 1857 if ((buflen -= 8) < 0)
1858 goto out_resource;
c654b8a9 1859 write_change(&p, &stat, dentry->d_inode);
1da177e4
LT		 1860 }
1861 if (bmval0 & FATTR4_WORD0_SIZE) {
1862 if ((buflen -= 8) < 0)
1863 goto out_resource;
1864 WRITE64(stat.size);
1865 }
1866 if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) {
1867 if ((buflen -= 4) < 0)
1868 goto out_resource;
1869 WRITE32(1);
1870 }
1871 if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) {
1872 if ((buflen -= 4) < 0)
1873 goto out_resource;
1874 WRITE32(1);
1875 }
1876 if (bmval0 & FATTR4_WORD0_NAMED_ATTR) {
1877 if ((buflen -= 4) < 0)
1878 goto out_resource;
1879 WRITE32(0);
1880 }
1881 if (bmval0 & FATTR4_WORD0_FSID) {
1882 if ((buflen -= 16) < 0)
1883 goto out_resource;
42ca0993
BF		 1884 if (exp->ex_fslocs.migrated) {
1885 WRITE64(NFS4_REFERRAL_FSID_MAJOR);
1886 WRITE64(NFS4_REFERRAL_FSID_MINOR);
af6a4e28
N		 1887 } else switch(fsid_source(fhp)) {
1888 case FSIDSOURCE_FSID:
1da177e4
LT		 1889 WRITE64((u64)exp->ex_fsid);
1890 WRITE64((u64)0);
af6a4e28
N		 1891 break;
1892 case FSIDSOURCE_DEV:
1da177e4
LT		 1893 WRITE32(0);
1894 WRITE32(MAJOR(stat.dev));
1895 WRITE32(0);
1896 WRITE32(MINOR(stat.dev));
af6a4e28
N		 1897 break;
1898 case FSIDSOURCE_UUID:
1899 WRITEMEM(exp->ex_uuid, 16);
1900 break;
1da177e4
LT		 1901 }
1902 }
1903 if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) {
1904 if ((buflen -= 4) < 0)
1905 goto out_resource;
1906 WRITE32(0);
1907 }
1908 if (bmval0 & FATTR4_WORD0_LEASE_TIME) {
1909 if ((buflen -= 4) < 0)
1910 goto out_resource;
1911 WRITE32(NFSD_LEASE_TIME);
1912 }
1913 if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) {
1914 if ((buflen -= 4) < 0)
1915 goto out_resource;
42ca0993 1916 WRITE32(rdattr_err);
1da177e4
LT		 1917 }
1918 if (bmval0 & FATTR4_WORD0_ACL) {
1919 struct nfs4_ace *ace;
1da177e4
LT		 1920
1921 if (acl == NULL) {
1922 if ((buflen -= 4) < 0)
1923 goto out_resource;
1924
1925 WRITE32(0);
1926 goto out_acl;
1927 }
1928 if ((buflen -= 4) < 0)
1929 goto out_resource;
1930 WRITE32(acl->naces);
1931
28e05dd8 1932 for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) {
1da177e4
LT		 1933 if ((buflen -= 4*3) < 0)
1934 goto out_resource;
1935 WRITE32(ace->type);
1936 WRITE32(ace->flag);
1937 WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL);
1938 status = nfsd4_encode_aclname(rqstp, ace->whotype,
1939 ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP,
1940 &p, &buflen);
1941 if (status == nfserr_resource)
1942 goto out_resource;
1943 if (status)
1944 goto out;
1945 }
1946 }
1947out_acl:
1948 if (bmval0 & FATTR4_WORD0_ACLSUPPORT) {
1949 if ((buflen -= 4) < 0)
1950 goto out_resource;
1951 WRITE32(aclsupport ?
1952 ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0);
1953 }
1954 if (bmval0 & FATTR4_WORD0_CANSETTIME) {
1955 if ((buflen -= 4) < 0)
1956 goto out_resource;
1957 WRITE32(1);
1958 }
1959 if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) {
1960 if ((buflen -= 4) < 0)
1961 goto out_resource;
1962 WRITE32(1);
1963 }
1964 if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) {
1965 if ((buflen -= 4) < 0)
1966 goto out_resource;
1967 WRITE32(1);
1968 }
1969 if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) {
1970 if ((buflen -= 4) < 0)
1971 goto out_resource;
1972 WRITE32(1);
1973 }
1974 if (bmval0 & FATTR4_WORD0_FILEHANDLE) {
1975 buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4;
1976 if (buflen < 0)
1977 goto out_resource;
1978 WRITE32(fhp->fh_handle.fh_size);
1979 WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size);
1980 }
1981 if (bmval0 & FATTR4_WORD0_FILEID) {
1982 if ((buflen -= 8) < 0)
1983 goto out_resource;
40ee5dc6 1984 WRITE64(stat.ino);
1da177e4
LT		 1985 }
1986 if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
1987 if ((buflen -= 8) < 0)
1988 goto out_resource;
1989 WRITE64((u64) statfs.f_ffree);
1990 }
1991 if (bmval0 & FATTR4_WORD0_FILES_FREE) {
1992 if ((buflen -= 8) < 0)
1993 goto out_resource;
1994 WRITE64((u64) statfs.f_ffree);
1995 }
1996 if (bmval0 & FATTR4_WORD0_FILES_TOTAL) {
1997 if ((buflen -= 8) < 0)
1998 goto out_resource;
1999 WRITE64((u64) statfs.f_files);
2000 }
81c3f413
BF		 2001 if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
2002 status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen);
2003 if (status == nfserr_resource)
2004 goto out_resource;
2005 if (status)
2006 goto out;
2007 }
1da177e4
LT		 2008 if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) {
2009 if ((buflen -= 4) < 0)
2010 goto out_resource;
2011 WRITE32(1);
2012 }
2013 if (bmval0 & FATTR4_WORD0_MAXFILESIZE) {
2014 if ((buflen -= 8) < 0)
2015 goto out_resource;
2016 WRITE64(~(u64)0);
2017 }
2018 if (bmval0 & FATTR4_WORD0_MAXLINK) {
2019 if ((buflen -= 4) < 0)
2020 goto out_resource;
2021 WRITE32(255);
2022 }
2023 if (bmval0 & FATTR4_WORD0_MAXNAME) {
2024 if ((buflen -= 4) < 0)
2025 goto out_resource;
a16e92ed 2026 WRITE32(statfs.f_namelen);
1da177e4
LT		 2027 }
2028 if (bmval0 & FATTR4_WORD0_MAXREAD) {
2029 if ((buflen -= 8) < 0)
2030 goto out_resource;
7adae489 2031 WRITE64((u64) svc_max_payload(rqstp));
1da177e4
LT		 2032 }
2033 if (bmval0 & FATTR4_WORD0_MAXWRITE) {
2034 if ((buflen -= 8) < 0)
2035 goto out_resource;
7adae489 2036 WRITE64((u64) svc_max_payload(rqstp));
1da177e4
LT		 2037 }
2038 if (bmval1 & FATTR4_WORD1_MODE) {
2039 if ((buflen -= 4) < 0)
2040 goto out_resource;
2041 WRITE32(stat.mode & S_IALLUGO);
2042 }
2043 if (bmval1 & FATTR4_WORD1_NO_TRUNC) {
2044 if ((buflen -= 4) < 0)
2045 goto out_resource;
2046 WRITE32(1);
2047 }
2048 if (bmval1 & FATTR4_WORD1_NUMLINKS) {
2049 if ((buflen -= 4) < 0)
2050 goto out_resource;
2051 WRITE32(stat.nlink);
2052 }
2053 if (bmval1 & FATTR4_WORD1_OWNER) {
2054 status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen);
2055 if (status == nfserr_resource)
2056 goto out_resource;
2057 if (status)
2058 goto out;
2059 }
2060 if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
2061 status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen);
2062 if (status == nfserr_resource)
2063 goto out_resource;
2064 if (status)
2065 goto out;
2066 }
2067 if (bmval1 & FATTR4_WORD1_RAWDEV) {
2068 if ((buflen -= 8) < 0)
2069 goto out_resource;
2070 WRITE32((u32) MAJOR(stat.rdev));
2071 WRITE32((u32) MINOR(stat.rdev));
2072 }
2073 if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) {
2074 if ((buflen -= 8) < 0)
2075 goto out_resource;
2076 dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize;
2077 WRITE64(dummy64);
2078 }
2079 if (bmval1 & FATTR4_WORD1_SPACE_FREE) {
2080 if ((buflen -= 8) < 0)
2081 goto out_resource;
2082 dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize;
2083 WRITE64(dummy64);
2084 }
2085 if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) {
2086 if ((buflen -= 8) < 0)
2087 goto out_resource;
2088 dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize;
2089 WRITE64(dummy64);
2090 }
2091 if (bmval1 & FATTR4_WORD1_SPACE_USED) {
2092 if ((buflen -= 8) < 0)
2093 goto out_resource;
2094 dummy64 = (u64)stat.blocks << 9;
2095 WRITE64(dummy64);
2096 }
2097 if (bmval1 & FATTR4_WORD1_TIME_ACCESS) {
2098 if ((buflen -= 12) < 0)
2099 goto out_resource;
2100 WRITE32(0);
2101 WRITE32(stat.atime.tv_sec);
2102 WRITE32(stat.atime.tv_nsec);
2103 }
2104 if (bmval1 & FATTR4_WORD1_TIME_DELTA) {
2105 if ((buflen -= 12) < 0)
2106 goto out_resource;
2107 WRITE32(0);
2108 WRITE32(1);
2109 WRITE32(0);
2110 }
2111 if (bmval1 & FATTR4_WORD1_TIME_METADATA) {
2112 if ((buflen -= 12) < 0)
2113 goto out_resource;
2114 WRITE32(0);
2115 WRITE32(stat.ctime.tv_sec);
2116 WRITE32(stat.ctime.tv_nsec);
2117 }
2118 if (bmval1 & FATTR4_WORD1_TIME_MODIFY) {
2119 if ((buflen -= 12) < 0)
2120 goto out_resource;
2121 WRITE32(0);
2122 WRITE32(stat.mtime.tv_sec);
2123 WRITE32(stat.mtime.tv_nsec);
2124 }
2125 if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
1da177e4
LT		 2126 if ((buflen -= 8) < 0)
2127 goto out_resource;
406a7ea9
FF		 2128 /*
2129 * Get parent's attributes if not ignoring crossmount
2130 * and this is the root of a cross-mounted filesystem.
2131 */
2132 if (ignore_crossmnt == 0 &&
54775491
JB		 2133 exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
2134 err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
2135 exp->ex_path.mnt->mnt_mountpoint, &stat);
40ee5dc6
PS		 2136 if (err)
2137 goto out_nfserr;
2138 }
2139 WRITE64(stat.ino);
1da177e4 2140 }
8c18f205
BH		 2141 if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
2142 WRITE32(3);
2143 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
2144 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
2145 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
2146 }
7e705706 2147
1da177e4
LT		 2148 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
2149 *countp = p - buffer;
2150 status = nfs_ok;
2151
2152out:
28e05dd8 2153 kfree(acl);
1da177e4
LT		 2154 if (fhp == &tempfh)
2155 fh_put(&tempfh);
2156 return status;
2157out_nfserr:
b8dd7b9a 2158 status = nfserrno(err);
1da177e4
LT		 2159 goto out;
2160out_resource:
2161 *countp = 0;
2162 status = nfserr_resource;
2163 goto out;
2164out_serverfault:
2165 status = nfserr_serverfault;
2166 goto out;
2167}
2168
c0ce6ec8
BF		 2169static inline int attributes_need_mount(u32 *bmval)
2170{
2171 if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
2172 return 1;
2173 if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID)
2174 return 1;
2175 return 0;
2176}
2177
b37ad28b 2178static __be32
1da177e4 2179nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
2ebbc012 2180 const char *name, int namlen, __be32 *p, int *buflen)
1da177e4
LT		 2181{
2182 struct svc_export *exp = cd->rd_fhp->fh_export;
2183 struct dentry *dentry;
b37ad28b 2184 __be32 nfserr;
406a7ea9 2185 int ignore_crossmnt = 0;
1da177e4
LT		 2186
2187 dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
2188 if (IS_ERR(dentry))
2189 return nfserrno(PTR_ERR(dentry));
b2c0cea6
BF		 2190 if (!dentry->d_inode) {
2191 /*
2192 * nfsd_buffered_readdir drops the i_mutex between
2193 * readdir and calling this callback, leaving a window
2194 * where this directory entry could have gone away.
2195 */
2196 dput(dentry);
2197 return nfserr_noent;
2198 }
1da177e4
LT		 2199
2200 exp_get(exp);
406a7ea9
FF		 2201 /*
2202 * In the case of a mountpoint, the client may be asking for
2203 * attributes that are only properties of the underlying filesystem
2204 * as opposed to the cross-mounted file system. In such a case,
2205 * we will not follow the cross mount and will fill the attribtutes
2206 * directly from the mountpoint dentry.
2207 */
c0ce6ec8 2208 if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval))
406a7ea9
FF		 2209 ignore_crossmnt = 1;
2210 else if (d_mountpoint(dentry)) {
021d3a72
BF		 2211 int err;
2212
dcb488a3
AA		 2213 /*
2214 * Why the heck aren't we just using nfsd_lookup??
2215 * Different "."/".." handling? Something else?
2216 * At least, add a comment here to explain....
2217 */
021d3a72
BF		 2218 err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp);
2219 if (err) {
2220 nfserr = nfserrno(err);
1da177e4
LT		 2221 goto out_put;
2222 }
dcb488a3
AA		 2223 nfserr = check_nfsd_access(exp, cd->rd_rqstp);
2224 if (nfserr)
2225 goto out_put;
1da177e4
LT		 2226
2227 }
2228 nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
406a7ea9 2229 cd->rd_rqstp, ignore_crossmnt);
1da177e4
LT		 2230out_put:
2231 dput(dentry);
2232 exp_put(exp);
2233 return nfserr;
2234}
2235
2ebbc012 2236static __be32 *
b37ad28b 2237nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr)
1da177e4 2238{
2ebbc012 2239 __be32 *attrlenp;
1da177e4
LT		 2240
2241 if (buflen < 6)
2242 return NULL;
2243 *p++ = htonl(2);
2244 *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */
2245 *p++ = htonl(0); /* bmval1 */
2246
2247 attrlenp = p++;
2248 *p++ = nfserr; /* no htonl */
2249 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
2250 return p;
2251}
2252
2253static int
a0ad13ef
N		 2254nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
2255 loff_t offset, u64 ino, unsigned int d_type)
1da177e4 2256{
a0ad13ef 2257 struct readdir_cd *ccd = ccdv;
1da177e4
LT		 2258 struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
2259 int buflen;
2ebbc012 2260 __be32 *p = cd->buffer;
b2c0cea6 2261 __be32 *cookiep;
b37ad28b 2262 __be32 nfserr = nfserr_toosmall;
1da177e4
LT		 2263
2264 /* In nfsv4, "." and ".." never make it onto the wire.. */
2265 if (name && isdotent(name, namlen)) {
2266 cd->common.err = nfs_ok;
2267 return 0;
2268 }
2269
2270 if (cd->offset)
2271 xdr_encode_hyper(cd->offset, (u64) offset);
2272
2273 buflen = cd->buflen - 4 - XDR_QUADLEN(namlen);
2274 if (buflen < 0)
2275 goto fail;
2276
2277 *p++ = xdr_one; /* mark entry present */
b2c0cea6 2278 cookiep = p;
1da177e4
LT		 2279 p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
2280 p = xdr_encode_array(p, name, namlen); /* name length & name */
2281
2282 nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen);
2283 switch (nfserr) {
2284 case nfs_ok:
2285 p += buflen;
2286 break;
2287 case nfserr_resource:
2288 nfserr = nfserr_toosmall;
2289 goto fail;
2290 case nfserr_dropit:
2291 goto fail;
b2c0cea6
BF		 2292 case nfserr_noent:
2293 goto skip_entry;
1da177e4
LT		 2294 default:
2295 /*
2296 * If the client requested the RDATTR_ERROR attribute,
2297 * we stuff the error code into this attribute
2298 * and continue. If this attribute was not requested,
2299 * then in accordance with the spec, we fail the
2300 * entire READDIR operation(!)
2301 */
2302 if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR))
2303 goto fail;
1da177e4 2304 p = nfsd4_encode_rdattr_error(p, buflen, nfserr);
34081efc
FI		 2305 if (p == NULL) {
2306 nfserr = nfserr_toosmall;
1da177e4 2307 goto fail;
34081efc 2308 }
1da177e4
LT		 2309 }
2310 cd->buflen -= (p - cd->buffer);
2311 cd->buffer = p;
b2c0cea6
BF		 2312 cd->offset = cookiep;
2313skip_entry:
1da177e4
LT		 2314 cd->common.err = nfs_ok;
2315 return 0;
2316fail:
2317 cd->common.err = nfserr;
2318 return -EINVAL;
2319}
2320
e2f282b9
BH		 2321static void
2322nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
2323{
bc749ca4 2324 __be32 *p;
e2f282b9
BH		 2325
2326 RESERVE_SPACE(sizeof(stateid_t));
2327 WRITE32(sid->si_generation);
2328 WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
2329 ADJUST_ARGS();
2330}
2331
695e12f8 2332static __be32
b37ad28b 2333nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
1da177e4 2334{
bc749ca4 2335 __be32 *p;
1da177e4
LT		 2336
2337 if (!nfserr) {
2338 RESERVE_SPACE(8);
2339 WRITE32(access->ac_supported);
2340 WRITE32(access->ac_resp_access);
2341 ADJUST_ARGS();
2342 }
695e12f8 2343 return nfserr;
1da177e4
LT		 2344}
2345
695e12f8 2346static __be32
b37ad28b 2347nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
1da177e4
LT		 2348{
2349 ENCODE_SEQID_OP_HEAD;
2350
e2f282b9
BH		 2351 if (!nfserr)
2352 nfsd4_encode_stateid(resp, &close->cl_stateid);
2353
1da177e4 2354 ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
695e12f8 2355 return nfserr;
1da177e4
LT		 2356}
2357
2358
695e12f8 2359static __be32
b37ad28b 2360nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
1da177e4 2361{
bc749ca4 2362 __be32 *p;
1da177e4
LT		 2363
2364 if (!nfserr) {
2365 RESERVE_SPACE(8);
2366 WRITEMEM(commit->co_verf.data, 8);
2367 ADJUST_ARGS();
2368 }
695e12f8 2369 return nfserr;
1da177e4
LT		 2370}
2371
695e12f8 2372static __be32
b37ad28b 2373nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
1da177e4 2374{
bc749ca4 2375 __be32 *p;
1da177e4
LT		 2376
2377 if (!nfserr) {
2378 RESERVE_SPACE(32);
c654b8a9 2379 write_cinfo(&p, &create->cr_cinfo);
1da177e4
LT		 2380 WRITE32(2);
2381 WRITE32(create->cr_bmval[0]);
2382 WRITE32(create->cr_bmval[1]);
2383 ADJUST_ARGS();
2384 }
695e12f8 2385 return nfserr;
1da177e4
LT		 2386}
2387
b37ad28b
AV		 2388static __be32
2389nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr)
1da177e4
LT		 2390{
2391 struct svc_fh *fhp = getattr->ga_fhp;
2392 int buflen;
2393
2394 if (nfserr)
2395 return nfserr;
2396
2397 buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
2398 nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
2399 resp->p, &buflen, getattr->ga_bmval,
406a7ea9 2400 resp->rqstp, 0);
1da177e4
LT		 2401 if (!nfserr)
2402 resp->p += buflen;
2403 return nfserr;
2404}
2405
695e12f8
BH		 2406static __be32
2407nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp)
1da177e4 2408{
695e12f8 2409 struct svc_fh *fhp = *fhpp;
1da177e4 2410 unsigned int len;
bc749ca4 2411 __be32 *p;
1da177e4
LT		 2412
2413 if (!nfserr) {
2414 len = fhp->fh_handle.fh_size;
2415 RESERVE_SPACE(len + 4);
2416 WRITE32(len);
2417 WRITEMEM(&fhp->fh_handle.fh_base, len);
2418 ADJUST_ARGS();
2419 }
695e12f8 2420 return nfserr;
1da177e4
LT		 2421}
2422
2423/*
2424* Including all fields other than the name, a LOCK4denied structure requires
2425* 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
2426*/
2427static void
2428nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
2429{
bc749ca4 2430 __be32 *p;
1da177e4
LT		 2431
2432 RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
2433 WRITE64(ld->ld_start);
2434 WRITE64(ld->ld_length);
2435 WRITE32(ld->ld_type);
2436 if (ld->ld_sop) {
2437 WRITEMEM(&ld->ld_clientid, 8);
2438 WRITE32(ld->ld_sop->so_owner.len);
2439 WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len);
2440 kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner);
2441 } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
2442 WRITE64((u64)0); /* clientid */
2443 WRITE32(0); /* length of owner name */
2444 }
2445 ADJUST_ARGS();
2446}
2447
695e12f8 2448static __be32
b37ad28b 2449nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
1da177e4 2450{
1da177e4
LT		 2451 ENCODE_SEQID_OP_HEAD;
2452
e2f282b9
BH		 2453 if (!nfserr)
2454 nfsd4_encode_stateid(resp, &lock->lk_resp_stateid);
2455 else if (nfserr == nfserr_denied)
1da177e4
LT		 2456 nfsd4_encode_lock_denied(resp, &lock->lk_denied);
2457
3a65588a 2458 ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
695e12f8 2459 return nfserr;
1da177e4
LT		 2460}
2461
695e12f8 2462static __be32
b37ad28b 2463nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
1da177e4
LT		 2464{
2465 if (nfserr == nfserr_denied)
2466 nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
695e12f8 2467 return nfserr;
1da177e4
LT		 2468}
2469
695e12f8 2470static __be32
b37ad28b 2471nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
1da177e4
LT		 2472{
2473 ENCODE_SEQID_OP_HEAD;
2474
e2f282b9
BH		 2475 if (!nfserr)
2476 nfsd4_encode_stateid(resp, &locku->lu_stateid);
2477
1da177e4 2478 ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
695e12f8 2479 return nfserr;
1da177e4
LT		 2480}
2481
2482
695e12f8 2483static __be32
b37ad28b 2484nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
1da177e4 2485{
bc749ca4 2486 __be32 *p;
1da177e4
LT		 2487
2488 if (!nfserr) {
2489 RESERVE_SPACE(20);
c654b8a9 2490 write_cinfo(&p, &link->li_cinfo);
1da177e4
LT		 2491 ADJUST_ARGS();
2492 }
695e12f8 2493 return nfserr;
1da177e4
LT		 2494}
2495
2496
695e12f8 2497static __be32
b37ad28b 2498nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
1da177e4 2499{
bc749ca4 2500 __be32 *p;
1da177e4
LT		 2501 ENCODE_SEQID_OP_HEAD;
2502
2503 if (nfserr)
2504 goto out;
2505
e2f282b9
BH		 2506 nfsd4_encode_stateid(resp, &open->op_stateid);
2507 RESERVE_SPACE(40);
c654b8a9 2508 write_cinfo(&p, &open->op_cinfo);
1da177e4
LT		 2509 WRITE32(open->op_rflags);
2510 WRITE32(2);
2511 WRITE32(open->op_bmval[0]);
2512 WRITE32(open->op_bmval[1]);
2513 WRITE32(open->op_delegate_type);
2514 ADJUST_ARGS();
2515
2516 switch (open->op_delegate_type) {
2517 case NFS4_OPEN_DELEGATE_NONE:
2518 break;
2519 case NFS4_OPEN_DELEGATE_READ:
e2f282b9
BH		 2520 nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
2521 RESERVE_SPACE(20);
7b190fec 2522 WRITE32(open->op_recall);
1da177e4
LT		 2523
2524 /*
2525 * TODO: ACE's in delegations
2526 */
2527 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
2528 WRITE32(0);
2529 WRITE32(0);
2530 WRITE32(0); /* XXX: is NULL principal ok? */
2531 ADJUST_ARGS();
2532 break;
2533 case NFS4_OPEN_DELEGATE_WRITE:
e2f282b9
BH		 2534 nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
2535 RESERVE_SPACE(32);
1da177e4
LT		 2536 WRITE32(0);
2537
2538 /*
2539 * TODO: space_limit's in delegations
2540 */
2541 WRITE32(NFS4_LIMIT_SIZE);
2542 WRITE32(~(u32)0);
2543 WRITE32(~(u32)0);
2544
2545 /*
2546 * TODO: ACE's in delegations
2547 */
2548 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
2549 WRITE32(0);
2550 WRITE32(0);
2551 WRITE32(0); /* XXX: is NULL principal ok? */
2552 ADJUST_ARGS();
2553 break;
2554 default:
2555 BUG();
2556 }
2557 /* XXX save filehandle here */
2558out:
2559 ENCODE_SEQID_OP_TAIL(open->op_stateowner);
695e12f8 2560 return nfserr;
1da177e4
LT		 2561}
2562
695e12f8 2563static __be32
b37ad28b 2564nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
1da177e4
LT		 2565{
2566 ENCODE_SEQID_OP_HEAD;
e2f282b9
BH		 2567
2568 if (!nfserr)
2569 nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
1da177e4
LT		 2570
2571 ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
695e12f8 2572 return nfserr;
1da177e4
LT		 2573}
2574
695e12f8 2575static __be32
b37ad28b 2576nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
1da177e4
LT		 2577{
2578 ENCODE_SEQID_OP_HEAD;
e2f282b9
BH		 2579
2580 if (!nfserr)
2581 nfsd4_encode_stateid(resp, &od->od_stateid);
1da177e4
LT		 2582
2583 ENCODE_SEQID_OP_TAIL(od->od_stateowner);
695e12f8 2584 return nfserr;
1da177e4
LT		 2585}
2586
b37ad28b
AV		 2587static __be32
2588nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
44524359 2589 struct nfsd4_read *read)
1da177e4
LT		 2590{
2591 u32 eof;
2592 int v, pn;
2593 unsigned long maxcount;
2594 long len;
bc749ca4 2595 __be32 *p;
1da177e4
LT		 2596
2597 if (nfserr)
2598 return nfserr;
2599 if (resp->xbuf->page_len)
2600 return nfserr_resource;
2601
2602 RESERVE_SPACE(8); /* eof flag and byte count */
2603
7adae489 2604 maxcount = svc_max_payload(resp->rqstp);
1da177e4
LT		 2605 if (maxcount > read->rd_length)
2606 maxcount = read->rd_length;
2607
2608 len = maxcount;
2609 v = 0;
2610 while (len > 0) {
44524359 2611 pn = resp->rqstp->rq_resused++;
3cc03b16 2612 resp->rqstp->rq_vec[v].iov_base =
44524359 2613 page_address(resp->rqstp->rq_respages[pn]);
3cc03b16 2614 resp->rqstp->rq_vec[v].iov_len =
44524359 2615 len < PAGE_SIZE ? len : PAGE_SIZE;
1da177e4
LT		 2616 v++;
2617 len -= PAGE_SIZE;
2618 }
2619 read->rd_vlen = v;
2620
2621 nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp,
3cc03b16 2622 read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
1da177e4
LT		 2623 &maxcount);
2624
2625 if (nfserr == nfserr_symlink)
2626 nfserr = nfserr_inval;
2627 if (nfserr)
2628 return nfserr;
44524359
N		 2629 eof = (read->rd_offset + maxcount >=
2630 read->rd_fhp->fh_dentry->d_inode->i_size);
1da177e4
LT		 2631
2632 WRITE32(eof);
2633 WRITE32(maxcount);
2634 ADJUST_ARGS();
6ed6decc
N		 2635 resp->xbuf->head[0].iov_len = (char*)p
2636 - (char*)resp->xbuf->head[0].iov_base;
1da177e4
LT		 2637 resp->xbuf->page_len = maxcount;
2638
6ed6decc 2639 /* Use rest of head for padding and remaining ops: */
6ed6decc 2640 resp->xbuf->tail[0].iov_base = p;
1da177e4 2641 resp->xbuf->tail[0].iov_len = 0;
1da177e4 2642 if (maxcount&3) {
6ed6decc
N		 2643 RESERVE_SPACE(4);
2644 WRITE32(0);
1da177e4
LT		 2645 resp->xbuf->tail[0].iov_base += maxcount&3;
2646 resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
6ed6decc 2647 ADJUST_ARGS();
1da177e4
LT		 2648 }
2649 return 0;
2650}
2651
b37ad28b
AV		 2652static __be32
2653nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink)
1da177e4
LT		 2654{
2655 int maxcount;
2656 char *page;
bc749ca4 2657 __be32 *p;
1da177e4
LT		 2658
2659 if (nfserr)
2660 return nfserr;
2661 if (resp->xbuf->page_len)
2662 return nfserr_resource;
2663
44524359 2664 page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
1da177e4
LT		 2665
2666 maxcount = PAGE_SIZE;
2667 RESERVE_SPACE(4);
2668
2669 /*
2670 * XXX: By default, the ->readlink() VFS op will truncate symlinks
2671 * if they would overflow the buffer. Is this kosher in NFSv4? If
2672 * not, one easy fix is: if ->readlink() precisely fills the buffer,
2673 * assume that truncation occurred, and return NFS4ERR_RESOURCE.
2674 */
2675 nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount);
2676 if (nfserr == nfserr_isdir)
2677 return nfserr_inval;
2678 if (nfserr)
2679 return nfserr;
2680
2681 WRITE32(maxcount);
2682 ADJUST_ARGS();
6ed6decc
N		 2683 resp->xbuf->head[0].iov_len = (char*)p
2684 - (char*)resp->xbuf->head[0].iov_base;
2685 resp->xbuf->page_len = maxcount;
1da177e4 2686
6ed6decc 2687 /* Use rest of head for padding and remaining ops: */
6ed6decc 2688 resp->xbuf->tail[0].iov_base = p;
1da177e4 2689 resp->xbuf->tail[0].iov_len = 0;
1da177e4 2690 if (maxcount&3) {
6ed6decc
N		 2691 RESERVE_SPACE(4);
2692 WRITE32(0);
1da177e4
LT		 2693 resp->xbuf->tail[0].iov_base += maxcount&3;
2694 resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
6ed6decc 2695 ADJUST_ARGS();
1da177e4
LT		 2696 }
2697 return 0;
2698}
2699
b37ad28b
AV		 2700static __be32
2701nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir)
1da177e4
LT		 2702{
2703 int maxcount;
2704 loff_t offset;
2ebbc012 2705 __be32 *page, *savep, *tailbase;
bc749ca4 2706 __be32 *p;
1da177e4
LT		 2707
2708 if (nfserr)
2709 return nfserr;
2710 if (resp->xbuf->page_len)
2711 return nfserr_resource;
2712
2713 RESERVE_SPACE(8); /* verifier */
2714 savep = p;
2715
2716 /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
2717 WRITE32(0);
2718 WRITE32(0);
2719 ADJUST_ARGS();
2720 resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
bb6e8a9f 2721 tailbase = p;
1da177e4
LT		 2722
2723 maxcount = PAGE_SIZE;
2724 if (maxcount > readdir->rd_maxcount)
2725 maxcount = readdir->rd_maxcount;
2726
2727 /*
2728 * Convert from bytes to words, account for the two words already
2729 * written, make sure to leave two words at the end for the next
2730 * pointer and eof field.
2731 */
2732 maxcount = (maxcount >> 2) - 4;
2733 if (maxcount < 0) {
2734 nfserr = nfserr_toosmall;
2735 goto err_no_verf;
2736 }
2737
44524359 2738 page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
1da177e4
LT		 2739 readdir->common.err = 0;
2740 readdir->buflen = maxcount;
2741 readdir->buffer = page;
2742 readdir->offset = NULL;
2743
2744 offset = readdir->rd_cookie;
2745 nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp,
2746 &offset,
2747 &readdir->common, nfsd4_encode_dirent);
2748 if (nfserr == nfs_ok &&
2749 readdir->common.err == nfserr_toosmall &&
2750 readdir->buffer == page)
2751 nfserr = nfserr_toosmall;
2752 if (nfserr == nfserr_symlink)
2753 nfserr = nfserr_notdir;
2754 if (nfserr)
2755 goto err_no_verf;
2756
2757 if (readdir->offset)
2758 xdr_encode_hyper(readdir->offset, offset);
2759
2760 p = readdir->buffer;
2761 *p++ = 0; /* no more entries */
2762 *p++ = htonl(readdir->common.err == nfserr_eof);
44524359
N		 2763 resp->xbuf->page_len = ((char*)p) - (char*)page_address(
2764 resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
1da177e4 2765
bb6e8a9f 2766 /* Use rest of head for padding and remaining ops: */
bb6e8a9f 2767 resp->xbuf->tail[0].iov_base = tailbase;
1da177e4
LT		 2768 resp->xbuf->tail[0].iov_len = 0;
2769 resp->p = resp->xbuf->tail[0].iov_base;
bb6e8a9f 2770 resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;
1da177e4
LT		 2771
2772 return 0;
2773err_no_verf:
2774 p = savep;
2775 ADJUST_ARGS();
2776 return nfserr;
2777}
2778
695e12f8 2779static __be32
b37ad28b 2780nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
1da177e4 2781{
bc749ca4 2782 __be32 *p;
1da177e4
LT		 2783
2784 if (!nfserr) {
2785 RESERVE_SPACE(20);
c654b8a9 2786 write_cinfo(&p, &remove->rm_cinfo);
1da177e4
LT		 2787 ADJUST_ARGS();
2788 }
695e12f8 2789 return nfserr;
1da177e4
LT		 2790}
2791
695e12f8 2792static __be32
b37ad28b 2793nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
1da177e4 2794{
bc749ca4 2795 __be32 *p;
1da177e4
LT		 2796
2797 if (!nfserr) {
2798 RESERVE_SPACE(40);
c654b8a9
BF		 2799 write_cinfo(&p, &rename->rn_sinfo);
2800 write_cinfo(&p, &rename->rn_tinfo);
1da177e4
LT		 2801 ADJUST_ARGS();
2802 }
695e12f8 2803 return nfserr;
1da177e4
LT		 2804}
2805
695e12f8 2806static __be32
ca5c8cde 2807nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
dcb488a3
AA		 2808 struct nfsd4_secinfo *secinfo)
2809{
2810 int i = 0;
2811 struct svc_export *exp = secinfo->si_exp;
4796f457
BF		 2812 u32 nflavs;
2813 struct exp_flavor_info *flavs;
2814 struct exp_flavor_info def_flavs[2];
bc749ca4 2815 __be32 *p;
dcb488a3
AA		 2816
2817 if (nfserr)
2818 goto out;
4796f457
BF		 2819 if (exp->ex_nflavors) {
2820 flavs = exp->ex_flavors;
2821 nflavs = exp->ex_nflavors;
2822 } else { /* Handling of some defaults in absence of real secinfo: */
2823 flavs = def_flavs;
2824 if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) {
2825 nflavs = 2;
2826 flavs[0].pseudoflavor = RPC_AUTH_UNIX;
2827 flavs[1].pseudoflavor = RPC_AUTH_NULL;
2828 } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) {
2829 nflavs = 1;
2830 flavs[0].pseudoflavor
2831 = svcauth_gss_flavor(exp->ex_client);
2832 } else {
2833 nflavs = 1;
2834 flavs[0].pseudoflavor
2835 = exp->ex_client->flavour->flavour;
2836 }
2837 }
2838
dcb488a3 2839 RESERVE_SPACE(4);
4796f457 2840 WRITE32(nflavs);
dcb488a3 2841 ADJUST_ARGS();
4796f457
BF		 2842 for (i = 0; i < nflavs; i++) {
2843 u32 flav = flavs[i].pseudoflavor;
dcb488a3
AA		 2844 struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav);
2845
2846 if (gm) {
2847 RESERVE_SPACE(4);
2848 WRITE32(RPC_AUTH_GSS);
2849 ADJUST_ARGS();
2850 RESERVE_SPACE(4 + gm->gm_oid.len);
2851 WRITE32(gm->gm_oid.len);
2852 WRITEMEM(gm->gm_oid.data, gm->gm_oid.len);
2853 ADJUST_ARGS();
2854 RESERVE_SPACE(4);
2855 WRITE32(0); /* qop */
2856 ADJUST_ARGS();
2857 RESERVE_SPACE(4);
2858 WRITE32(gss_pseudoflavor_to_service(gm, flav));
2859 ADJUST_ARGS();
2860 gss_mech_put(gm);
2861 } else {
2862 RESERVE_SPACE(4);
2863 WRITE32(flav);
2864 ADJUST_ARGS();
2865 }
2866 }
2867out:
2868 if (exp)
2869 exp_put(exp);
695e12f8 2870 return nfserr;
dcb488a3
AA		 2871}
2872
1da177e4
LT		 2873/*
2874 * The SETATTR encode routine is special -- it always encodes a bitmap,
2875 * regardless of the error status.
2876 */
695e12f8 2877static __be32
b37ad28b 2878nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
1da177e4 2879{
bc749ca4 2880 __be32 *p;
1da177e4
LT		 2881
2882 RESERVE_SPACE(12);
2883 if (nfserr) {
2884 WRITE32(2);
2885 WRITE32(0);
2886 WRITE32(0);
2887 }
2888 else {
2889 WRITE32(2);
2890 WRITE32(setattr->sa_bmval[0]);
2891 WRITE32(setattr->sa_bmval[1]);
2892 }
2893 ADJUST_ARGS();
695e12f8 2894 return nfserr;
1da177e4
LT		 2895}
2896
695e12f8 2897static __be32
b37ad28b 2898nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
1da177e4 2899{
bc749ca4 2900 __be32 *p;
1da177e4
LT		 2901
2902 if (!nfserr) {
2903 RESERVE_SPACE(8 + sizeof(nfs4_verifier));
2904 WRITEMEM(&scd->se_clientid, 8);
2905 WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier));
2906 ADJUST_ARGS();
2907 }
2908 else if (nfserr == nfserr_clid_inuse) {
2909 RESERVE_SPACE(8);
2910 WRITE32(0);
2911 WRITE32(0);
2912 ADJUST_ARGS();
2913 }
695e12f8 2914 return nfserr;
1da177e4
LT		 2915}
2916
695e12f8 2917static __be32
b37ad28b 2918nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
1da177e4 2919{
bc749ca4 2920 __be32 *p;
1da177e4
LT		 2921
2922 if (!nfserr) {
2923 RESERVE_SPACE(16);
2924 WRITE32(write->wr_bytes_written);
2925 WRITE32(write->wr_how_written);
2926 WRITEMEM(write->wr_verifier.data, 8);
2927 ADJUST_ARGS();
2928 }
695e12f8 2929 return nfserr;
1da177e4
LT		 2930}
2931
2db134eb
AA		 2932static __be32
2933nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
2934 struct nfsd4_exchange_id *exid)
2935{
bc749ca4 2936 __be32 *p;
0733d213
AA		 2937 char *major_id;
2938 char *server_scope;
2939 int major_id_sz;
2940 int server_scope_sz;
2941 uint64_t minor_id = 0;
2942
2943 if (nfserr)
2944 return nfserr;
2945
2946 major_id = utsname()->nodename;
2947 major_id_sz = strlen(major_id);
2948 server_scope = utsname()->nodename;
2949 server_scope_sz = strlen(server_scope);
2950
2951 RESERVE_SPACE(
2952 8 /* eir_clientid */ +
2953 4 /* eir_sequenceid */ +
2954 4 /* eir_flags */ +
2955 4 /* spr_how (SP4_NONE) */ +
2956 8 /* so_minor_id */ +
2957 4 /* so_major_id.len */ +
2958 (XDR_QUADLEN(major_id_sz) * 4) +
2959 4 /* eir_server_scope.len */ +
2960 (XDR_QUADLEN(server_scope_sz) * 4) +
2961 4 /* eir_server_impl_id.count (0) */);
2962
2963 WRITEMEM(&exid->clientid, 8);
2964 WRITE32(exid->seqid);
2965 WRITE32(exid->flags);
2966
2967 /* state_protect4_r. Currently only support SP4_NONE */
2968 BUG_ON(exid->spa_how != SP4_NONE);
2969 WRITE32(exid->spa_how);
2970
2971 /* The server_owner struct */
2972 WRITE64(minor_id); /* Minor id */
2973 /* major id */
2974 WRITE32(major_id_sz);
2975 WRITEMEM(major_id, major_id_sz);
2976
2977 /* Server scope */
2978 WRITE32(server_scope_sz);
2979 WRITEMEM(server_scope, server_scope_sz);
2980
2981 /* Implementation id */
2982 WRITE32(0); /* zero length nfs_impl_id4 array */
2983 ADJUST_ARGS();
2984 return 0;
2db134eb
AA		 2985}
2986
2987static __be32
2988nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
2989 struct nfsd4_create_session *sess)
2990{
bc749ca4 2991 __be32 *p;
ec6b5d7b
AA		 2992
2993 if (nfserr)
2994 return nfserr;
2995
2996 RESERVE_SPACE(24);
2997 WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN);
2998 WRITE32(sess->seqid);
2999 WRITE32(sess->flags);
3000 ADJUST_ARGS();
3001
3002 RESERVE_SPACE(28);
3003 WRITE32(0); /* headerpadsz */
3004 WRITE32(sess->fore_channel.maxreq_sz);
3005 WRITE32(sess->fore_channel.maxresp_sz);
3006 WRITE32(sess->fore_channel.maxresp_cached);
3007 WRITE32(sess->fore_channel.maxops);
3008 WRITE32(sess->fore_channel.maxreqs);
3009 WRITE32(sess->fore_channel.nr_rdma_attrs);
3010 ADJUST_ARGS();
3011
3012 if (sess->fore_channel.nr_rdma_attrs) {
3013 RESERVE_SPACE(4);
3014 WRITE32(sess->fore_channel.rdma_attrs);
3015 ADJUST_ARGS();
3016 }
3017
3018 RESERVE_SPACE(28);
3019 WRITE32(0); /* headerpadsz */
3020 WRITE32(sess->back_channel.maxreq_sz);
3021 WRITE32(sess->back_channel.maxresp_sz);
3022 WRITE32(sess->back_channel.maxresp_cached);
3023 WRITE32(sess->back_channel.maxops);
3024 WRITE32(sess->back_channel.maxreqs);
3025 WRITE32(sess->back_channel.nr_rdma_attrs);
3026 ADJUST_ARGS();
3027
3028 if (sess->back_channel.nr_rdma_attrs) {
3029 RESERVE_SPACE(4);
3030 WRITE32(sess->back_channel.rdma_attrs);
3031 ADJUST_ARGS();
3032 }
3033 return 0;
2db134eb
AA		 3034}
3035
3036static __be32
3037nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
3038 struct nfsd4_destroy_session *destroy_session)
3039{
2db134eb
AA		 3040 return nfserr;
3041}
3042
bf864a31 3043__be32
2db134eb
AA		 3044nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
3045 struct nfsd4_sequence *seq)
3046{
bc749ca4 3047 __be32 *p;
b85d4c01
BH		 3048
3049 if (nfserr)
3050 return nfserr;
3051
3052 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20);
3053 WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
3054 WRITE32(seq->seqid);
3055 WRITE32(seq->slotid);
3056 WRITE32(seq->maxslots);
3057 /*
3058 * FIXME: for now:
3059 * target_maxslots = maxslots
3060 * status_flags = 0
3061 */
3062 WRITE32(seq->maxslots);
3063 WRITE32(0);
3064
3065 ADJUST_ARGS();
557ce264 3066 resp->cstate.datap = p; /* DRC cache data pointer */
b85d4c01 3067 return 0;
2db134eb
AA		 3068}
3069
695e12f8
BH		 3070static __be32
3071nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
3072{
3073 return nfserr;
3074}
3075
3076typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
3077
2db134eb
AA		 3078/*
3079 * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
3080 * since we don't need to filter out obsolete ops as this is
3081 * done in the decoding phase.
3082 */
695e12f8 3083static nfsd4_enc nfsd4_enc_ops[] = {
ad1060c8
BF		 3084 [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
3085 [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
3086 [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit,
3087 [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create,
3088 [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop,
3089 [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop,
3090 [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr,
3091 [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh,
3092 [OP_LINK] = (nfsd4_enc)nfsd4_encode_link,
3093 [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock,
3094 [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt,
3095 [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku,
3096 [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop,
3097 [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop,
3098 [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop,
3099 [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open,
84f09f46 3100 [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop,
ad1060c8
BF		 3101 [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm,
3102 [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade,
3103 [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop,
3104 [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop,
3105 [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop,
3106 [OP_READ] = (nfsd4_enc)nfsd4_encode_read,
3107 [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir,
3108 [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink,
3109 [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove,
3110 [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename,
3111 [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop,
3112 [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop,
3113 [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop,
3114 [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo,
3115 [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr,
3116 [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid,
3117 [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop,
3118 [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop,
3119 [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write,
3120 [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop,
2db134eb
AA		 3121
3122 /* NFSv4.1 operations */
3123 [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop,
3124 [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop,
3125 [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
3126 [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
3127 [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
3128 [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
3129 [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
3130 [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
3131 [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
3132 [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop,
3133 [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop,
3134 [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop,
3135 [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop,
3136 [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
3137 [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
3138 [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
3139 [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
3140 [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
3141 [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
695e12f8
BH		 3142};
3143
496c262c
AA		 3144/*
3145 * Calculate the total amount of memory that the compound response has taken
3146 * after encoding the current operation.
3147 *
3148 * pad: add on 8 bytes for the next operation's op_code and status so that
3149 * there is room to cache a failure on the next operation.
3150 *
3151 * Compare this length to the session se_fmaxresp_cached.
3152 *
3153 * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
3154 * will be at least a page and will therefore hold the xdr_buf head.
3155 */
3156static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
3157{
3158 int status = 0;
3159 struct xdr_buf *xb = &resp->rqstp->rq_res;
3160 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
3161 struct nfsd4_session *session = NULL;
3162 struct nfsd4_slot *slot = resp->cstate.slot;
3163 u32 length, tlen = 0, pad = 8;
3164
3165 if (!nfsd4_has_session(&resp->cstate))
3166 return status;
3167
3168 session = resp->cstate.session;
557ce264 3169 if (session == NULL || slot->sl_cachethis == 0)
496c262c
AA		 3170 return status;
3171
3172 if (resp->opcnt >= args->opcnt)
3173 pad = 0; /* this is the last operation */
3174
3175 if (xb->page_len == 0) {
3176 length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
3177 } else {
3178 if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
3179 tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;
3180
3181 length = xb->head[0].iov_len + xb->page_len + tlen + pad;
3182 }
3183 dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
3184 length, xb->page_len, tlen, pad);
3185
6c18ba9f 3186 if (length <= session->se_fchannel.maxresp_cached)
496c262c
AA		 3187 return status;
3188 else
3189 return nfserr_rep_too_big_to_cache;
3190}
3191
1da177e4
LT		 3192void
3193nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
3194{
2ebbc012 3195 __be32 *statp;
bc749ca4 3196 __be32 *p;
1da177e4
LT		 3197
3198 RESERVE_SPACE(8);
3199 WRITE32(op->opnum);
3200 statp = p++; /* to be backfilled at the end */
3201 ADJUST_ARGS();
3202
695e12f8
BH		 3203 if (op->opnum == OP_ILLEGAL)
3204 goto status;
3205 BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
3206 !nfsd4_enc_ops[op->opnum]);
3207 op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
496c262c
AA		 3208 /* nfsd4_check_drc_limit guarantees enough room for error status */
3209 if (!op->status && nfsd4_check_drc_limit(resp))
3210 op->status = nfserr_rep_too_big_to_cache;
695e12f8 3211status:
1da177e4
LT		 3212 /*
3213 * Note: We write the status directly, instead of using WRITE32(),
3214 * since it is already in network byte order.
3215 */
3216 *statp = op->status;
3217}
3218
3219/*
3220 * Encode the reply stored in the stateowner reply cache
3221 *
3222 * XDR note: do not encode rp->rp_buflen: the buffer contains the
3223 * previously sent already encoded operation.
3224 *
3225 * called with nfs4_lock_state() held
3226 */
3227void
3228nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
3229{
bc749ca4 3230 __be32 *p;
1da177e4
LT		 3231 struct nfs4_replay *rp = op->replay;
3232
3233 BUG_ON(!rp);
3234
3235 RESERVE_SPACE(8);
3236 WRITE32(op->opnum);
3237 *p++ = rp->rp_status; /* already xdr'ed */
3238 ADJUST_ARGS();
3239
3240 RESERVE_SPACE(rp->rp_buflen);
3241 WRITEMEM(rp->rp_buf, rp->rp_buflen);
3242 ADJUST_ARGS();
3243}
3244
1da177e4 3245int
2ebbc012 3246nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
1da177e4
LT		 3247{
3248 return xdr_ressize_check(rqstp, p);
3249}
3250
3251void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
3252{
3253 if (args->ops != args->iops) {
3254 kfree(args->ops);
3255 args->ops = args->iops;
3256 }
f99d49ad
JJ		 3257 kfree(args->tmpp);
3258 args->tmpp = NULL;
1da177e4
LT		 3259 while (args->to_free) {
3260 struct tmpbuf *tb = args->to_free;
3261 args->to_free = tb->next;
3262 tb->release(tb->buf);
3263 kfree(tb);
3264 }
3265}
3266
3267int
2ebbc012 3268nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
1da177e4 3269{
b37ad28b 3270 __be32 status;
1da177e4
LT		 3271
3272 args->p = p;
3273 args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
3274 args->pagelist = rqstp->rq_arg.pages;
3275 args->pagelen = rqstp->rq_arg.page_len;
3276 args->tmpp = NULL;
3277 args->to_free = NULL;
3278 args->ops = args->iops;
3279 args->rqstp = rqstp;
3280
3281 status = nfsd4_decode_compound(args);
3282 if (status) {
3283 nfsd4_release_compoundargs(args);
3284 }
3285 return !status;
3286}
3287
3288int
2ebbc012 3289nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp)
1da177e4
LT		 3290{
3291 /*
3292 * All that remains is to write the tag and operation count...
3293 */
557ce264 3294 struct nfsd4_compound_state *cs = &resp->cstate;
1da177e4
LT		 3295 struct kvec *iov;
3296 p = resp->tagp;
3297 *p++ = htonl(resp->taglen);
3298 memcpy(p, resp->tag, resp->taglen);
3299 p += XDR_QUADLEN(resp->taglen);
3300 *p++ = htonl(resp->opcnt);
3301
3302 if (rqstp->rq_res.page_len)
3303 iov = &rqstp->rq_res.tail[0];
3304 else
3305 iov = &rqstp->rq_res.head[0];
3306 iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
3307 BUG_ON(iov->iov_len > PAGE_SIZE);
557ce264
AA		 3308 if (nfsd4_has_session(cs) && cs->status != nfserr_replay_cache) {
3309 nfsd4_store_cache_entry(resp);
3310 dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
3311 resp->cstate.slot->sl_inuse = false;
49557cc7 3312 nfsd4_put_session(resp->cstate.session);
da3846a2 3313 }
1da177e4
LT		 3314 return 1;
3315}
3316
3317/*
3318 * Local variables:
3319 * c-basic-offset: 8
3320 * End:
3321 */
Linux kernel - Deliverables
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