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introduce ->iterate(), ctx->pos, dir_emit()
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / nfsd / nfs3proc.c
CommitLineData
1da177e4 1/*
1da177e4
LT		 2 * Process version 3 NFS requests.
3 *
4 * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
5 */
6
1da177e4
LT		 7#include <linux/fs.h>
8#include <linux/ext2_fs.h>
12214cb7 9#include <linux/magic.h>
1da177e4 10
9a74af21
BH		 11#include "cache.h"
12#include "xdr3.h"
0a3adade 13#include "vfs.h"
1da177e4
LT		 14
15#define NFSDDBG_FACILITY NFSDDBG_PROC
16
17#define RETURN_STATUS(st) { resp->status = (st); return (st); }
18
19static int nfs3_ftypes[] = {
20 0, /* NF3NON */
21 S_IFREG, /* NF3REG */
22 S_IFDIR, /* NF3DIR */
23 S_IFBLK, /* NF3BLK */
24 S_IFCHR, /* NF3CHR */
25 S_IFLNK, /* NF3LNK */
26 S_IFSOCK, /* NF3SOCK */
27 S_IFIFO, /* NF3FIFO */
28};
29
30/*
31 * NULL call.
32 */
7111c66e 33static __be32
1da177e4
LT		 34nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
35{
36 return nfs_ok;
37}
38
39/*
40 * Get a file's attributes
41 */
7111c66e 42static __be32
1da177e4
LT		 43nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
44 struct nfsd3_attrstat *resp)
45{
c4d987ba 46 __be32 nfserr;
1da177e4
LT		 47
48 dprintk("nfsd: GETATTR(3) %s\n",
a334de28 49 SVCFH_fmt(&argp->fh));
1da177e4
LT		 50
51 fh_copy(&resp->fh, &argp->fh);
04716e66
BF		 52 nfserr = fh_verify(rqstp, &resp->fh, 0,
53 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
a334de28
DS		 54 if (nfserr)
55 RETURN_STATUS(nfserr);
56
3dadecce 57 nfserr = fh_getattr(&resp->fh, &resp->stat);
a334de28 58
1da177e4
LT		 59 RETURN_STATUS(nfserr);
60}
61
62/*
63 * Set a file's attributes
64 */
7111c66e 65static __be32
1da177e4
LT		 66nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp,
67 struct nfsd3_attrstat *resp)
68{
c4d987ba 69 __be32 nfserr;
1da177e4
LT		 70
71 dprintk("nfsd: SETATTR(3) %s\n",
72 SVCFH_fmt(&argp->fh));
73
74 fh_copy(&resp->fh, &argp->fh);
75 nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
76 argp->check_guard, argp->guardtime);
77 RETURN_STATUS(nfserr);
78}
79
80/*
81 * Look up a path name component
82 */
7111c66e 83static __be32
1da177e4
LT		 84nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
85 struct nfsd3_diropres *resp)
86{
c4d987ba 87 __be32 nfserr;
1da177e4
LT		 88
89 dprintk("nfsd: LOOKUP(3) %s %.*s\n",
90 SVCFH_fmt(&argp->fh),
91 argp->len,
92 argp->name);
93
94 fh_copy(&resp->dirfh, &argp->fh);
95 fh_init(&resp->fh, NFS3_FHSIZE);
96
97 nfserr = nfsd_lookup(rqstp, &resp->dirfh,
98 argp->name,
99 argp->len,
100 &resp->fh);
101 RETURN_STATUS(nfserr);
102}
103
104/*
105 * Check file access
106 */
7111c66e 107static __be32
1da177e4
LT		 108nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
109 struct nfsd3_accessres *resp)
110{
c4d987ba 111 __be32 nfserr;
1da177e4
LT		 112
113 dprintk("nfsd: ACCESS(3) %s 0x%x\n",
114 SVCFH_fmt(&argp->fh),
115 argp->access);
116
117 fh_copy(&resp->fh, &argp->fh);
118 resp->access = argp->access;
119 nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
120 RETURN_STATUS(nfserr);
121}
122
123/*
124 * Read a symlink.
125 */
7111c66e 126static __be32
1da177e4
LT		 127nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp,
128 struct nfsd3_readlinkres *resp)
129{
c4d987ba 130 __be32 nfserr;
1da177e4
LT		 131
132 dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
133
134 /* Read the symlink. */
135 fh_copy(&resp->fh, &argp->fh);
136 resp->len = NFS3_MAXPATHLEN;
137 nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len);
138 RETURN_STATUS(nfserr);
139}
140
141/*
142 * Read a portion of a file.
143 */
7111c66e 144static __be32
1da177e4
LT		 145nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp,
146 struct nfsd3_readres *resp)
147{
c4d987ba 148 __be32 nfserr;
7adae489 149 u32 max_blocksize = svc_max_payload(rqstp);
1da177e4 150
18b631f8 151 dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n",
1da177e4
LT		 152 SVCFH_fmt(&argp->fh),
153 (unsigned long) argp->count,
18b631f8 154 (unsigned long long) argp->offset);
1da177e4
LT		 155
156 /* Obtain buffer pointer for payload.
157 * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
158 * + 1 (xdr opaque byte count) = 26
159 */
160
161 resp->count = argp->count;
7adae489
GB		 162 if (max_blocksize < resp->count)
163 resp->count = max_blocksize;
1da177e4 164
cd123012 165 svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
1da177e4
LT		 166
167 fh_copy(&resp->fh, &argp->fh);
039a87ca 168 nfserr = nfsd_read(rqstp, &resp->fh,
1da177e4 169 argp->offset,
3cc03b16 170 rqstp->rq_vec, argp->vlen,
1da177e4
LT		 171 &resp->count);
172 if (nfserr == 0) {
173 struct inode *inode = resp->fh.fh_dentry->d_inode;
174
175 resp->eof = (argp->offset + resp->count) >= inode->i_size;
176 }
177
178 RETURN_STATUS(nfserr);
179}
180
181/*
182 * Write data to a file
183 */
7111c66e 184static __be32
1da177e4
LT		 185nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
186 struct nfsd3_writeres *resp)
187{
c4d987ba 188 __be32 nfserr;
31dec253 189 unsigned long cnt = argp->len;
1da177e4 190
18b631f8 191 dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n",
1da177e4
LT		 192 SVCFH_fmt(&argp->fh),
193 argp->len,
18b631f8 194 (unsigned long long) argp->offset,
1da177e4
LT		 195 argp->stable? " stable" : "");
196
197 fh_copy(&resp->fh, &argp->fh);
198 resp->committed = argp->stable;
199 nfserr = nfsd_write(rqstp, &resp->fh, NULL,
200 argp->offset,
3cc03b16 201 rqstp->rq_vec, argp->vlen,
31dec253 202 &cnt,
1da177e4 203 &resp->committed);
31dec253 204 resp->count = cnt;
1da177e4
LT		 205 RETURN_STATUS(nfserr);
206}
207
208/*
209 * With NFSv3, CREATE processing is a lot easier than with NFSv2.
210 * At least in theory; we'll see how it fares in practice when the
211 * first reports about SunOS compatibility problems start to pour in...
212 */
7111c66e 213static __be32
1da177e4
LT		 214nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
215 struct nfsd3_diropres *resp)
216{
217 svc_fh *dirfhp, *newfhp = NULL;
218 struct iattr *attr;
c4d987ba 219 __be32 nfserr;
1da177e4
LT		 220
221 dprintk("nfsd: CREATE(3) %s %.*s\n",
222 SVCFH_fmt(&argp->fh),
223 argp->len,
224 argp->name);
225
226 dirfhp = fh_copy(&resp->dirfh, &argp->fh);
227 newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
228 attr = &argp->attrs;
229
230 /* Get the directory inode */
8837abca 231 nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE);
1da177e4
LT		 232 if (nfserr)
233 RETURN_STATUS(nfserr);
234
235 /* Unfudge the mode bits */
236 attr->ia_mode &= ~S_IFMT;
237 if (!(attr->ia_valid & ATTR_MODE)) {
238 attr->ia_valid |= ATTR_MODE;
239 attr->ia_mode = S_IFREG;
240 } else {
241 attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
242 }
243
244 /* Now create the file and set attributes */
ac6721a1 245 nfserr = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len,
1da177e4 246 attr, newfhp,
95c7a20a 247 argp->createmode, (u32 *)argp->verf, NULL, NULL);
1da177e4
LT		 248
249 RETURN_STATUS(nfserr);
250}
251
252/*
253 * Make directory. This operation is not idempotent.
254 */
7111c66e 255static __be32
1da177e4
LT		 256nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
257 struct nfsd3_diropres *resp)
258{
c4d987ba 259 __be32 nfserr;
1da177e4
LT		 260
261 dprintk("nfsd: MKDIR(3) %s %.*s\n",
262 SVCFH_fmt(&argp->fh),
263 argp->len,
264 argp->name);
265
266 argp->attrs.ia_valid &= ~ATTR_SIZE;
267 fh_copy(&resp->dirfh, &argp->fh);
268 fh_init(&resp->fh, NFS3_FHSIZE);
269 nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
270 &argp->attrs, S_IFDIR, 0, &resp->fh);
43a9aa64 271 fh_unlock(&resp->dirfh);
1da177e4
LT		 272 RETURN_STATUS(nfserr);
273}
274
7111c66e 275static __be32
1da177e4
LT		 276nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp,
277 struct nfsd3_diropres *resp)
278{
c4d987ba 279 __be32 nfserr;
1da177e4
LT		 280
281 dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n",
282 SVCFH_fmt(&argp->ffh),
283 argp->flen, argp->fname,
284 argp->tlen, argp->tname);
285
286 fh_copy(&resp->dirfh, &argp->ffh);
287 fh_init(&resp->fh, NFS3_FHSIZE);
288 nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
289 argp->tname, argp->tlen,
290 &resp->fh, &argp->attrs);
291 RETURN_STATUS(nfserr);
292}
293
294/*
295 * Make socket/fifo/device.
296 */
7111c66e 297static __be32
1da177e4
LT		 298nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
299 struct nfsd3_diropres *resp)
300{
c4d987ba
AV		 301 __be32 nfserr;
302 int type;
1da177e4
LT		 303 dev_t rdev = 0;
304
305 dprintk("nfsd: MKNOD(3) %s %.*s\n",
306 SVCFH_fmt(&argp->fh),
307 argp->len,
308 argp->name);
309
310 fh_copy(&resp->dirfh, &argp->fh);
311 fh_init(&resp->fh, NFS3_FHSIZE);
312
313 if (argp->ftype == 0 || argp->ftype >= NF3BAD)
314 RETURN_STATUS(nfserr_inval);
315 if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
316 rdev = MKDEV(argp->major, argp->minor);
317 if (MAJOR(rdev) != argp->major ||
318 MINOR(rdev) != argp->minor)
319 RETURN_STATUS(nfserr_inval);
320 } else
321 if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
322 RETURN_STATUS(nfserr_inval);
323
324 type = nfs3_ftypes[argp->ftype];
325 nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
326 &argp->attrs, type, rdev, &resp->fh);
43a9aa64 327 fh_unlock(&resp->dirfh);
1da177e4
LT		 328 RETURN_STATUS(nfserr);
329}
330
331/*
332 * Remove file/fifo/socket etc.
333 */
7111c66e 334static __be32
1da177e4
LT		 335nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
336 struct nfsd3_attrstat *resp)
337{
c4d987ba 338 __be32 nfserr;
1da177e4
LT		 339
340 dprintk("nfsd: REMOVE(3) %s %.*s\n",
341 SVCFH_fmt(&argp->fh),
342 argp->len,
343 argp->name);
344
345 /* Unlink. -S_IFDIR means file must not be a directory */
346 fh_copy(&resp->fh, &argp->fh);
347 nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
43a9aa64 348 fh_unlock(&resp->fh);
1da177e4
LT		 349 RETURN_STATUS(nfserr);
350}
351
352/*
353 * Remove a directory
354 */
7111c66e 355static __be32
1da177e4
LT		 356nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
357 struct nfsd3_attrstat *resp)
358{
c4d987ba 359 __be32 nfserr;
1da177e4
LT		 360
361 dprintk("nfsd: RMDIR(3) %s %.*s\n",
362 SVCFH_fmt(&argp->fh),
363 argp->len,
364 argp->name);
365
366 fh_copy(&resp->fh, &argp->fh);
367 nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
43a9aa64 368 fh_unlock(&resp->fh);
1da177e4
LT		 369 RETURN_STATUS(nfserr);
370}
371
7111c66e 372static __be32
1da177e4
LT		 373nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp,
374 struct nfsd3_renameres *resp)
375{
c4d987ba 376 __be32 nfserr;
1da177e4
LT		 377
378 dprintk("nfsd: RENAME(3) %s %.*s ->\n",
379 SVCFH_fmt(&argp->ffh),
380 argp->flen,
381 argp->fname);
382 dprintk("nfsd: -> %s %.*s\n",
383 SVCFH_fmt(&argp->tfh),
384 argp->tlen,
385 argp->tname);
386
387 fh_copy(&resp->ffh, &argp->ffh);
388 fh_copy(&resp->tfh, &argp->tfh);
389 nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
390 &resp->tfh, argp->tname, argp->tlen);
391 RETURN_STATUS(nfserr);
392}
393
7111c66e 394static __be32
1da177e4
LT		 395nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp,
396 struct nfsd3_linkres *resp)
397{
c4d987ba 398 __be32 nfserr;
1da177e4
LT		 399
400 dprintk("nfsd: LINK(3) %s ->\n",
401 SVCFH_fmt(&argp->ffh));
402 dprintk("nfsd: -> %s %.*s\n",
403 SVCFH_fmt(&argp->tfh),
404 argp->tlen,
405 argp->tname);
406
407 fh_copy(&resp->fh, &argp->ffh);
408 fh_copy(&resp->tfh, &argp->tfh);
409 nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
410 &resp->fh);
411 RETURN_STATUS(nfserr);
412}
413
414/*
415 * Read a portion of a directory.
416 */
7111c66e 417static __be32
1da177e4
LT		 418nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
419 struct nfsd3_readdirres *resp)
420{
c4d987ba
AV		 421 __be32 nfserr;
422 int count;
1da177e4
LT		 423
424 dprintk("nfsd: READDIR(3) %s %d bytes at %d\n",
425 SVCFH_fmt(&argp->fh),
426 argp->count, (u32) argp->cookie);
427
428 /* Make sure we've room for the NULL ptr & eof flag, and shrink to
429 * client read size */
430 count = (argp->count >> 2) - 2;
431
432 /* Read directory and encode entries on the fly */
433 fh_copy(&resp->fh, &argp->fh);
434
435 resp->buflen = count;
436 resp->common.err = nfs_ok;
437 resp->buffer = argp->buffer;
438 resp->rqstp = rqstp;
439 nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie,
440 &resp->common, nfs3svc_encode_entry);
441 memcpy(resp->verf, argp->verf, 8);
442 resp->count = resp->buffer - argp->buffer;
443 if (resp->offset)
444 xdr_encode_hyper(resp->offset, argp->cookie);
445
446 RETURN_STATUS(nfserr);
447}
448
449/*
450 * Read a portion of a directory, including file handles and attrs.
451 * For now, we choose to ignore the dircount parameter.
452 */
7111c66e 453static __be32
1da177e4
LT		 454nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
455 struct nfsd3_readdirres *resp)
456{
c4d987ba
AV		 457 __be32 nfserr;
458 int count = 0;
1da177e4 459 loff_t offset;
afc59400 460 struct page **p;
1da177e4
LT		 461 caddr_t page_addr = NULL;
462
463 dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
464 SVCFH_fmt(&argp->fh),
465 argp->count, (u32) argp->cookie);
466
467 /* Convert byte count to number of words (i.e. >> 2),
468 * and reserve room for the NULL ptr & eof flag (-2 words) */
469 resp->count = (argp->count >> 2) - 2;
470
471 /* Read directory and encode entries on the fly */
472 fh_copy(&resp->fh, &argp->fh);
473
474 resp->common.err = nfs_ok;
475 resp->buffer = argp->buffer;
476 resp->buflen = resp->count;
477 resp->rqstp = rqstp;
478 offset = argp->cookie;
479 nfserr = nfsd_readdir(rqstp, &resp->fh,
480 &offset,
481 &resp->common,
482 nfs3svc_encode_entry_plus);
483 memcpy(resp->verf, argp->verf, 8);
afc59400
BF		 484 for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) {
485 page_addr = page_address(*p);
1da177e4
LT		 486
487 if (((caddr_t)resp->buffer >= page_addr) &&
488 ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
489 count += (caddr_t)resp->buffer - page_addr;
490 break;
491 }
492 count += PAGE_SIZE;
493 }
494 resp->count = count >> 2;
495 if (resp->offset) {
496 if (unlikely(resp->offset1)) {
497 /* we ended up with offset on a page boundary */
498 *resp->offset = htonl(offset >> 32);
499 *resp->offset1 = htonl(offset & 0xffffffff);
500 resp->offset1 = NULL;
501 } else {
502 xdr_encode_hyper(resp->offset, offset);
503 }
504 }
505
506 RETURN_STATUS(nfserr);
507}
508
509/*
510 * Get file system stats
511 */
7111c66e 512static __be32
1da177e4
LT		 513nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
514 struct nfsd3_fsstatres *resp)
515{
c4d987ba 516 __be32 nfserr;
1da177e4
LT		 517
518 dprintk("nfsd: FSSTAT(3) %s\n",
519 SVCFH_fmt(&argp->fh));
520
04716e66 521 nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
1da177e4
LT		 522 fh_put(&argp->fh);
523 RETURN_STATUS(nfserr);
524}
525
526/*
527 * Get file system info
528 */
7111c66e 529static __be32
1da177e4
LT		 530nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
531 struct nfsd3_fsinfores *resp)
532{
c4d987ba 533 __be32 nfserr;
7adae489 534 u32 max_blocksize = svc_max_payload(rqstp);
1da177e4
LT		 535
536 dprintk("nfsd: FSINFO(3) %s\n",
537 SVCFH_fmt(&argp->fh));
538
7adae489
GB		 539 resp->f_rtmax = max_blocksize;
540 resp->f_rtpref = max_blocksize;
1da177e4 541 resp->f_rtmult = PAGE_SIZE;
7adae489
GB		 542 resp->f_wtmax = max_blocksize;
543 resp->f_wtpref = max_blocksize;
1da177e4
LT		 544 resp->f_wtmult = PAGE_SIZE;
545 resp->f_dtpref = PAGE_SIZE;
546 resp->f_maxfilesize = ~(u32) 0;
547 resp->f_properties = NFS3_FSF_DEFAULT;
548
04716e66
BF		 549 nfserr = fh_verify(rqstp, &argp->fh, 0,
550 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
1da177e4
LT		 551
552 /* Check special features of the file system. May request
553 * different read/write sizes for file systems known to have
554 * problems with large blocks */
555 if (nfserr == 0) {
556 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
557
558 /* Note that we don't care for remote fs's here */
12214cb7 559 if (sb->s_magic == MSDOS_SUPER_MAGIC) {
1da177e4
LT		 560 resp->f_properties = NFS3_FSF_BILLYBOY;
561 }
562 resp->f_maxfilesize = sb->s_maxbytes;
563 }
564
565 fh_put(&argp->fh);
566 RETURN_STATUS(nfserr);
567}
568
569/*
570 * Get pathconf info for the specified file
571 */
7111c66e 572static __be32
1da177e4
LT		 573nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
574 struct nfsd3_pathconfres *resp)
575{
c4d987ba 576 __be32 nfserr;
1da177e4
LT		 577
578 dprintk("nfsd: PATHCONF(3) %s\n",
579 SVCFH_fmt(&argp->fh));
580
581 /* Set default pathconf */
582 resp->p_link_max = 255; /* at least */
583 resp->p_name_max = 255; /* at least */
584 resp->p_no_trunc = 0;
585 resp->p_chown_restricted = 1;
586 resp->p_case_insensitive = 0;
587 resp->p_case_preserving = 1;
588
8837abca 589 nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
1da177e4
LT		 590
591 if (nfserr == 0) {
592 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
593
594 /* Note that we don't care for remote fs's here */
595 switch (sb->s_magic) {
596 case EXT2_SUPER_MAGIC:
597 resp->p_link_max = EXT2_LINK_MAX;
598 resp->p_name_max = EXT2_NAME_LEN;
599 break;
12214cb7 600 case MSDOS_SUPER_MAGIC:
1da177e4
LT		 601 resp->p_case_insensitive = 1;
602 resp->p_case_preserving = 0;
603 break;
604 }
605 }
606
607 fh_put(&argp->fh);
608 RETURN_STATUS(nfserr);
609}
610
611
612/*
613 * Commit a file (range) to stable storage.
614 */
7111c66e 615static __be32
1da177e4
LT		 616nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
617 struct nfsd3_commitres *resp)
618{
c4d987ba 619 __be32 nfserr;
1da177e4
LT		 620
621 dprintk("nfsd: COMMIT(3) %s %u@%Lu\n",
622 SVCFH_fmt(&argp->fh),
623 argp->count,
624 (unsigned long long) argp->offset);
625
626 if (argp->offset > NFS_OFFSET_MAX)
627 RETURN_STATUS(nfserr_inval);
628
629 fh_copy(&resp->fh, &argp->fh);
630 nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
631
632 RETURN_STATUS(nfserr);
633}
634
635
636/*
637 * NFSv3 Server procedures.
638 * Only the results of non-idempotent operations are cached.
639 */
1da177e4
LT		 640#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
641#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
642#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
643#define nfsd3_mkdirargs nfsd3_createargs
644#define nfsd3_readdirplusargs nfsd3_readdirargs
645#define nfsd3_fhandleargs nfsd_fhandle
646#define nfsd3_fhandleres nfsd3_attrstat
647#define nfsd3_attrstatres nfsd3_attrstat
648#define nfsd3_wccstatres nfsd3_attrstat
649#define nfsd3_createres nfsd3_diropres
650#define nfsd3_voidres nfsd3_voidargs
651struct nfsd3_voidargs { int dummy; };
652
653#define PROC(name, argt, rest, relt, cache, respsize) \
654 { (svc_procfunc) nfsd3_proc_##name, \
655 (kxdrproc_t) nfs3svc_decode_##argt##args, \
656 (kxdrproc_t) nfs3svc_encode_##rest##res, \
657 (kxdrproc_t) nfs3svc_release_##relt, \
658 sizeof(struct nfsd3_##argt##args), \
659 sizeof(struct nfsd3_##rest##res), \
660 0, \
661 cache, \
662 respsize, \
663 }
664
665#define ST 1 /* status*/
666#define FH 17 /* filehandle with length */
667#define AT 21 /* attributes */
668#define pAT (1+AT) /* post attributes - conditional */
669#define WC (7+pAT) /* WCC attributes */
670
671static struct svc_procedure nfsd_procedures3[22] = {
b9081d90
YZ		 672 [NFS3PROC_NULL] = {
673 .pc_func = (svc_procfunc) nfsd3_proc_null,
674 .pc_encode = (kxdrproc_t) nfs3svc_encode_voidres,
675 .pc_argsize = sizeof(struct nfsd3_voidargs),
676 .pc_ressize = sizeof(struct nfsd3_voidres),
677 .pc_cachetype = RC_NOCACHE,
678 .pc_xdrressize = ST,
679 },
680 [NFS3PROC_GETATTR] = {
681 .pc_func = (svc_procfunc) nfsd3_proc_getattr,
682 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
683 .pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres,
684 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
685 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
686 .pc_ressize = sizeof(struct nfsd3_attrstatres),
687 .pc_cachetype = RC_NOCACHE,
688 .pc_xdrressize = ST+AT,
689 },
690 [NFS3PROC_SETATTR] = {
691 .pc_func = (svc_procfunc) nfsd3_proc_setattr,
692 .pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs,
693 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
694 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
695 .pc_argsize = sizeof(struct nfsd3_sattrargs),
696 .pc_ressize = sizeof(struct nfsd3_wccstatres),
697 .pc_cachetype = RC_REPLBUFF,
698 .pc_xdrressize = ST+WC,
699 },
700 [NFS3PROC_LOOKUP] = {
701 .pc_func = (svc_procfunc) nfsd3_proc_lookup,
702 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
703 .pc_encode = (kxdrproc_t) nfs3svc_encode_diropres,
704 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
705 .pc_argsize = sizeof(struct nfsd3_diropargs),
706 .pc_ressize = sizeof(struct nfsd3_diropres),
707 .pc_cachetype = RC_NOCACHE,
708 .pc_xdrressize = ST+FH+pAT+pAT,
709 },
710 [NFS3PROC_ACCESS] = {
711 .pc_func = (svc_procfunc) nfsd3_proc_access,
712 .pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs,
713 .pc_encode = (kxdrproc_t) nfs3svc_encode_accessres,
714 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
715 .pc_argsize = sizeof(struct nfsd3_accessargs),
716 .pc_ressize = sizeof(struct nfsd3_accessres),
717 .pc_cachetype = RC_NOCACHE,
718 .pc_xdrressize = ST+pAT+1,
719 },
720 [NFS3PROC_READLINK] = {
721 .pc_func = (svc_procfunc) nfsd3_proc_readlink,
722 .pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs,
723 .pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres,
724 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
725 .pc_argsize = sizeof(struct nfsd3_readlinkargs),
726 .pc_ressize = sizeof(struct nfsd3_readlinkres),
727 .pc_cachetype = RC_NOCACHE,
728 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
729 },
730 [NFS3PROC_READ] = {
731 .pc_func = (svc_procfunc) nfsd3_proc_read,
732 .pc_decode = (kxdrproc_t) nfs3svc_decode_readargs,
733 .pc_encode = (kxdrproc_t) nfs3svc_encode_readres,
734 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
735 .pc_argsize = sizeof(struct nfsd3_readargs),
736 .pc_ressize = sizeof(struct nfsd3_readres),
737 .pc_cachetype = RC_NOCACHE,
738 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
739 },
740 [NFS3PROC_WRITE] = {
741 .pc_func = (svc_procfunc) nfsd3_proc_write,
742 .pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs,
743 .pc_encode = (kxdrproc_t) nfs3svc_encode_writeres,
744 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
745 .pc_argsize = sizeof(struct nfsd3_writeargs),
746 .pc_ressize = sizeof(struct nfsd3_writeres),
747 .pc_cachetype = RC_REPLBUFF,
748 .pc_xdrressize = ST+WC+4,
749 },
750 [NFS3PROC_CREATE] = {
751 .pc_func = (svc_procfunc) nfsd3_proc_create,
752 .pc_decode = (kxdrproc_t) nfs3svc_decode_createargs,
753 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
754 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
755 .pc_argsize = sizeof(struct nfsd3_createargs),
756 .pc_ressize = sizeof(struct nfsd3_createres),
757 .pc_cachetype = RC_REPLBUFF,
758 .pc_xdrressize = ST+(1+FH+pAT)+WC,
759 },
760 [NFS3PROC_MKDIR] = {
761 .pc_func = (svc_procfunc) nfsd3_proc_mkdir,
762 .pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs,
763 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
764 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
765 .pc_argsize = sizeof(struct nfsd3_mkdirargs),
766 .pc_ressize = sizeof(struct nfsd3_createres),
767 .pc_cachetype = RC_REPLBUFF,
768 .pc_xdrressize = ST+(1+FH+pAT)+WC,
769 },
770 [NFS3PROC_SYMLINK] = {
771 .pc_func = (svc_procfunc) nfsd3_proc_symlink,
772 .pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs,
773 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
774 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
775 .pc_argsize = sizeof(struct nfsd3_symlinkargs),
776 .pc_ressize = sizeof(struct nfsd3_createres),
777 .pc_cachetype = RC_REPLBUFF,
778 .pc_xdrressize = ST+(1+FH+pAT)+WC,
779 },
780 [NFS3PROC_MKNOD] = {
781 .pc_func = (svc_procfunc) nfsd3_proc_mknod,
782 .pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs,
783 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
784 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
785 .pc_argsize = sizeof(struct nfsd3_mknodargs),
786 .pc_ressize = sizeof(struct nfsd3_createres),
787 .pc_cachetype = RC_REPLBUFF,
788 .pc_xdrressize = ST+(1+FH+pAT)+WC,
789 },
790 [NFS3PROC_REMOVE] = {
791 .pc_func = (svc_procfunc) nfsd3_proc_remove,
792 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
793 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
794 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
795 .pc_argsize = sizeof(struct nfsd3_diropargs),
796 .pc_ressize = sizeof(struct nfsd3_wccstatres),
797 .pc_cachetype = RC_REPLBUFF,
798 .pc_xdrressize = ST+WC,
799 },
800 [NFS3PROC_RMDIR] = {
801 .pc_func = (svc_procfunc) nfsd3_proc_rmdir,
802 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
803 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
804 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
805 .pc_argsize = sizeof(struct nfsd3_diropargs),
806 .pc_ressize = sizeof(struct nfsd3_wccstatres),
807 .pc_cachetype = RC_REPLBUFF,
808 .pc_xdrressize = ST+WC,
809 },
810 [NFS3PROC_RENAME] = {
811 .pc_func = (svc_procfunc) nfsd3_proc_rename,
812 .pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs,
813 .pc_encode = (kxdrproc_t) nfs3svc_encode_renameres,
814 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
815 .pc_argsize = sizeof(struct nfsd3_renameargs),
816 .pc_ressize = sizeof(struct nfsd3_renameres),
817 .pc_cachetype = RC_REPLBUFF,
818 .pc_xdrressize = ST+WC+WC,
819 },
820 [NFS3PROC_LINK] = {
821 .pc_func = (svc_procfunc) nfsd3_proc_link,
822 .pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs,
823 .pc_encode = (kxdrproc_t) nfs3svc_encode_linkres,
824 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
825 .pc_argsize = sizeof(struct nfsd3_linkargs),
826 .pc_ressize = sizeof(struct nfsd3_linkres),
827 .pc_cachetype = RC_REPLBUFF,
828 .pc_xdrressize = ST+pAT+WC,
829 },
830 [NFS3PROC_READDIR] = {
831 .pc_func = (svc_procfunc) nfsd3_proc_readdir,
832 .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs,
833 .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
834 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
835 .pc_argsize = sizeof(struct nfsd3_readdirargs),
836 .pc_ressize = sizeof(struct nfsd3_readdirres),
837 .pc_cachetype = RC_NOCACHE,
838 },
839 [NFS3PROC_READDIRPLUS] = {
840 .pc_func = (svc_procfunc) nfsd3_proc_readdirplus,
841 .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs,
842 .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
843 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
844 .pc_argsize = sizeof(struct nfsd3_readdirplusargs),
845 .pc_ressize = sizeof(struct nfsd3_readdirres),
846 .pc_cachetype = RC_NOCACHE,
847 },
848 [NFS3PROC_FSSTAT] = {
849 .pc_func = (svc_procfunc) nfsd3_proc_fsstat,
850 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
851 .pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres,
852 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
853 .pc_ressize = sizeof(struct nfsd3_fsstatres),
854 .pc_cachetype = RC_NOCACHE,
855 .pc_xdrressize = ST+pAT+2*6+1,
856 },
857 [NFS3PROC_FSINFO] = {
858 .pc_func = (svc_procfunc) nfsd3_proc_fsinfo,
859 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
860 .pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores,
861 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
862 .pc_ressize = sizeof(struct nfsd3_fsinfores),
863 .pc_cachetype = RC_NOCACHE,
864 .pc_xdrressize = ST+pAT+12,
865 },
866 [NFS3PROC_PATHCONF] = {
867 .pc_func = (svc_procfunc) nfsd3_proc_pathconf,
868 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
869 .pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres,
870 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
871 .pc_ressize = sizeof(struct nfsd3_pathconfres),
872 .pc_cachetype = RC_NOCACHE,
873 .pc_xdrressize = ST+pAT+6,
874 },
875 [NFS3PROC_COMMIT] = {
876 .pc_func = (svc_procfunc) nfsd3_proc_commit,
877 .pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs,
878 .pc_encode = (kxdrproc_t) nfs3svc_encode_commitres,
879 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
880 .pc_argsize = sizeof(struct nfsd3_commitargs),
881 .pc_ressize = sizeof(struct nfsd3_commitres),
882 .pc_cachetype = RC_NOCACHE,
883 .pc_xdrressize = ST+WC+2,
884 },
1da177e4
LT		 885};
886
887struct svc_version nfsd_version3 = {
888 .vs_vers = 3,
889 .vs_nproc = 22,
890 .vs_proc = nfsd_procedures3,
891 .vs_dispatch = nfsd_dispatch,
892 .vs_xdrsize = NFS3_SVC_XDRSIZE,
893};
kernel source for telekom puls (alcatel/mediatek)