Commit | Line | Data |
---|---|---|
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 | ||
19 | static 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 | 33 | static __be32 |
1da177e4 LT |
34 | nfsd3_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 | 42 | static __be32 |
1da177e4 LT |
43 | nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, |
44 | struct nfsd3_attrstat *resp) | |
45 | { | |
c4d987ba AV |
46 | int err; |
47 | __be32 nfserr; | |
1da177e4 LT |
48 | |
49 | dprintk("nfsd: GETATTR(3) %s\n", | |
a334de28 | 50 | SVCFH_fmt(&argp->fh)); |
1da177e4 LT |
51 | |
52 | fh_copy(&resp->fh, &argp->fh); | |
04716e66 BF |
53 | nfserr = fh_verify(rqstp, &resp->fh, 0, |
54 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
a334de28 DS |
55 | if (nfserr) |
56 | RETURN_STATUS(nfserr); | |
57 | ||
54775491 | 58 | err = vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
a334de28 DS |
59 | resp->fh.fh_dentry, &resp->stat); |
60 | nfserr = nfserrno(err); | |
61 | ||
1da177e4 LT |
62 | RETURN_STATUS(nfserr); |
63 | } | |
64 | ||
65 | /* | |
66 | * Set a file's attributes | |
67 | */ | |
7111c66e | 68 | static __be32 |
1da177e4 LT |
69 | nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp, |
70 | struct nfsd3_attrstat *resp) | |
71 | { | |
c4d987ba | 72 | __be32 nfserr; |
1da177e4 LT |
73 | |
74 | dprintk("nfsd: SETATTR(3) %s\n", | |
75 | SVCFH_fmt(&argp->fh)); | |
76 | ||
77 | fh_copy(&resp->fh, &argp->fh); | |
78 | nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs, | |
79 | argp->check_guard, argp->guardtime); | |
80 | RETURN_STATUS(nfserr); | |
81 | } | |
82 | ||
83 | /* | |
84 | * Look up a path name component | |
85 | */ | |
7111c66e | 86 | static __be32 |
1da177e4 LT |
87 | nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
88 | struct nfsd3_diropres *resp) | |
89 | { | |
c4d987ba | 90 | __be32 nfserr; |
1da177e4 LT |
91 | |
92 | dprintk("nfsd: LOOKUP(3) %s %.*s\n", | |
93 | SVCFH_fmt(&argp->fh), | |
94 | argp->len, | |
95 | argp->name); | |
96 | ||
97 | fh_copy(&resp->dirfh, &argp->fh); | |
98 | fh_init(&resp->fh, NFS3_FHSIZE); | |
99 | ||
100 | nfserr = nfsd_lookup(rqstp, &resp->dirfh, | |
101 | argp->name, | |
102 | argp->len, | |
103 | &resp->fh); | |
104 | RETURN_STATUS(nfserr); | |
105 | } | |
106 | ||
107 | /* | |
108 | * Check file access | |
109 | */ | |
7111c66e | 110 | static __be32 |
1da177e4 LT |
111 | nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp, |
112 | struct nfsd3_accessres *resp) | |
113 | { | |
c4d987ba | 114 | __be32 nfserr; |
1da177e4 LT |
115 | |
116 | dprintk("nfsd: ACCESS(3) %s 0x%x\n", | |
117 | SVCFH_fmt(&argp->fh), | |
118 | argp->access); | |
119 | ||
120 | fh_copy(&resp->fh, &argp->fh); | |
121 | resp->access = argp->access; | |
122 | nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL); | |
123 | RETURN_STATUS(nfserr); | |
124 | } | |
125 | ||
126 | /* | |
127 | * Read a symlink. | |
128 | */ | |
7111c66e | 129 | static __be32 |
1da177e4 LT |
130 | nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp, |
131 | struct nfsd3_readlinkres *resp) | |
132 | { | |
c4d987ba | 133 | __be32 nfserr; |
1da177e4 LT |
134 | |
135 | dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); | |
136 | ||
137 | /* Read the symlink. */ | |
138 | fh_copy(&resp->fh, &argp->fh); | |
139 | resp->len = NFS3_MAXPATHLEN; | |
140 | nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len); | |
141 | RETURN_STATUS(nfserr); | |
142 | } | |
143 | ||
144 | /* | |
145 | * Read a portion of a file. | |
146 | */ | |
7111c66e | 147 | static __be32 |
1da177e4 LT |
148 | nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp, |
149 | struct nfsd3_readres *resp) | |
150 | { | |
c4d987ba | 151 | __be32 nfserr; |
7adae489 | 152 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 153 | |
18b631f8 | 154 | dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n", |
1da177e4 LT |
155 | SVCFH_fmt(&argp->fh), |
156 | (unsigned long) argp->count, | |
18b631f8 | 157 | (unsigned long long) argp->offset); |
1da177e4 LT |
158 | |
159 | /* Obtain buffer pointer for payload. | |
160 | * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof) | |
161 | * + 1 (xdr opaque byte count) = 26 | |
162 | */ | |
163 | ||
164 | resp->count = argp->count; | |
7adae489 GB |
165 | if (max_blocksize < resp->count) |
166 | resp->count = max_blocksize; | |
1da177e4 | 167 | |
cd123012 | 168 | svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); |
1da177e4 LT |
169 | |
170 | fh_copy(&resp->fh, &argp->fh); | |
039a87ca | 171 | nfserr = nfsd_read(rqstp, &resp->fh, |
1da177e4 | 172 | argp->offset, |
3cc03b16 | 173 | rqstp->rq_vec, argp->vlen, |
1da177e4 LT |
174 | &resp->count); |
175 | if (nfserr == 0) { | |
176 | struct inode *inode = resp->fh.fh_dentry->d_inode; | |
177 | ||
178 | resp->eof = (argp->offset + resp->count) >= inode->i_size; | |
179 | } | |
180 | ||
181 | RETURN_STATUS(nfserr); | |
182 | } | |
183 | ||
184 | /* | |
185 | * Write data to a file | |
186 | */ | |
7111c66e | 187 | static __be32 |
1da177e4 LT |
188 | nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp, |
189 | struct nfsd3_writeres *resp) | |
190 | { | |
c4d987ba | 191 | __be32 nfserr; |
31dec253 | 192 | unsigned long cnt = argp->len; |
1da177e4 | 193 | |
18b631f8 | 194 | dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n", |
1da177e4 LT |
195 | SVCFH_fmt(&argp->fh), |
196 | argp->len, | |
18b631f8 | 197 | (unsigned long long) argp->offset, |
1da177e4 LT |
198 | argp->stable? " stable" : ""); |
199 | ||
200 | fh_copy(&resp->fh, &argp->fh); | |
201 | resp->committed = argp->stable; | |
202 | nfserr = nfsd_write(rqstp, &resp->fh, NULL, | |
203 | argp->offset, | |
3cc03b16 | 204 | rqstp->rq_vec, argp->vlen, |
31dec253 | 205 | &cnt, |
1da177e4 | 206 | &resp->committed); |
31dec253 | 207 | resp->count = cnt; |
1da177e4 LT |
208 | RETURN_STATUS(nfserr); |
209 | } | |
210 | ||
211 | /* | |
212 | * With NFSv3, CREATE processing is a lot easier than with NFSv2. | |
213 | * At least in theory; we'll see how it fares in practice when the | |
214 | * first reports about SunOS compatibility problems start to pour in... | |
215 | */ | |
7111c66e | 216 | static __be32 |
1da177e4 LT |
217 | nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, |
218 | struct nfsd3_diropres *resp) | |
219 | { | |
220 | svc_fh *dirfhp, *newfhp = NULL; | |
221 | struct iattr *attr; | |
c4d987ba | 222 | __be32 nfserr; |
1da177e4 LT |
223 | |
224 | dprintk("nfsd: CREATE(3) %s %.*s\n", | |
225 | SVCFH_fmt(&argp->fh), | |
226 | argp->len, | |
227 | argp->name); | |
228 | ||
229 | dirfhp = fh_copy(&resp->dirfh, &argp->fh); | |
230 | newfhp = fh_init(&resp->fh, NFS3_FHSIZE); | |
231 | attr = &argp->attrs; | |
232 | ||
233 | /* Get the directory inode */ | |
8837abca | 234 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE); |
1da177e4 LT |
235 | if (nfserr) |
236 | RETURN_STATUS(nfserr); | |
237 | ||
238 | /* Unfudge the mode bits */ | |
239 | attr->ia_mode &= ~S_IFMT; | |
240 | if (!(attr->ia_valid & ATTR_MODE)) { | |
241 | attr->ia_valid |= ATTR_MODE; | |
242 | attr->ia_mode = S_IFREG; | |
243 | } else { | |
244 | attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG; | |
245 | } | |
246 | ||
247 | /* Now create the file and set attributes */ | |
ac6721a1 | 248 | nfserr = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len, |
1da177e4 | 249 | attr, newfhp, |
81ac95c5 | 250 | argp->createmode, argp->verf, NULL, NULL); |
1da177e4 LT |
251 | |
252 | RETURN_STATUS(nfserr); | |
253 | } | |
254 | ||
255 | /* | |
256 | * Make directory. This operation is not idempotent. | |
257 | */ | |
7111c66e | 258 | static __be32 |
1da177e4 LT |
259 | nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, |
260 | struct nfsd3_diropres *resp) | |
261 | { | |
c4d987ba | 262 | __be32 nfserr; |
1da177e4 LT |
263 | |
264 | dprintk("nfsd: MKDIR(3) %s %.*s\n", | |
265 | SVCFH_fmt(&argp->fh), | |
266 | argp->len, | |
267 | argp->name); | |
268 | ||
269 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
270 | fh_copy(&resp->dirfh, &argp->fh); | |
271 | fh_init(&resp->fh, NFS3_FHSIZE); | |
272 | nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, | |
273 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
43a9aa64 | 274 | fh_unlock(&resp->dirfh); |
1da177e4 LT |
275 | RETURN_STATUS(nfserr); |
276 | } | |
277 | ||
7111c66e | 278 | static __be32 |
1da177e4 LT |
279 | nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp, |
280 | struct nfsd3_diropres *resp) | |
281 | { | |
c4d987ba | 282 | __be32 nfserr; |
1da177e4 LT |
283 | |
284 | dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n", | |
285 | SVCFH_fmt(&argp->ffh), | |
286 | argp->flen, argp->fname, | |
287 | argp->tlen, argp->tname); | |
288 | ||
289 | fh_copy(&resp->dirfh, &argp->ffh); | |
290 | fh_init(&resp->fh, NFS3_FHSIZE); | |
291 | nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen, | |
292 | argp->tname, argp->tlen, | |
293 | &resp->fh, &argp->attrs); | |
294 | RETURN_STATUS(nfserr); | |
295 | } | |
296 | ||
297 | /* | |
298 | * Make socket/fifo/device. | |
299 | */ | |
7111c66e | 300 | static __be32 |
1da177e4 LT |
301 | nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp, |
302 | struct nfsd3_diropres *resp) | |
303 | { | |
c4d987ba AV |
304 | __be32 nfserr; |
305 | int type; | |
1da177e4 LT |
306 | dev_t rdev = 0; |
307 | ||
308 | dprintk("nfsd: MKNOD(3) %s %.*s\n", | |
309 | SVCFH_fmt(&argp->fh), | |
310 | argp->len, | |
311 | argp->name); | |
312 | ||
313 | fh_copy(&resp->dirfh, &argp->fh); | |
314 | fh_init(&resp->fh, NFS3_FHSIZE); | |
315 | ||
316 | if (argp->ftype == 0 || argp->ftype >= NF3BAD) | |
317 | RETURN_STATUS(nfserr_inval); | |
318 | if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) { | |
319 | rdev = MKDEV(argp->major, argp->minor); | |
320 | if (MAJOR(rdev) != argp->major || | |
321 | MINOR(rdev) != argp->minor) | |
322 | RETURN_STATUS(nfserr_inval); | |
323 | } else | |
324 | if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) | |
325 | RETURN_STATUS(nfserr_inval); | |
326 | ||
327 | type = nfs3_ftypes[argp->ftype]; | |
328 | nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, | |
329 | &argp->attrs, type, rdev, &resp->fh); | |
43a9aa64 | 330 | fh_unlock(&resp->dirfh); |
1da177e4 LT |
331 | RETURN_STATUS(nfserr); |
332 | } | |
333 | ||
334 | /* | |
335 | * Remove file/fifo/socket etc. | |
336 | */ | |
7111c66e | 337 | static __be32 |
1da177e4 LT |
338 | nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
339 | struct nfsd3_attrstat *resp) | |
340 | { | |
c4d987ba | 341 | __be32 nfserr; |
1da177e4 LT |
342 | |
343 | dprintk("nfsd: REMOVE(3) %s %.*s\n", | |
344 | SVCFH_fmt(&argp->fh), | |
345 | argp->len, | |
346 | argp->name); | |
347 | ||
348 | /* Unlink. -S_IFDIR means file must not be a directory */ | |
349 | fh_copy(&resp->fh, &argp->fh); | |
350 | nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len); | |
43a9aa64 | 351 | fh_unlock(&resp->fh); |
1da177e4 LT |
352 | RETURN_STATUS(nfserr); |
353 | } | |
354 | ||
355 | /* | |
356 | * Remove a directory | |
357 | */ | |
7111c66e | 358 | static __be32 |
1da177e4 LT |
359 | nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
360 | struct nfsd3_attrstat *resp) | |
361 | { | |
c4d987ba | 362 | __be32 nfserr; |
1da177e4 LT |
363 | |
364 | dprintk("nfsd: RMDIR(3) %s %.*s\n", | |
365 | SVCFH_fmt(&argp->fh), | |
366 | argp->len, | |
367 | argp->name); | |
368 | ||
369 | fh_copy(&resp->fh, &argp->fh); | |
370 | nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len); | |
43a9aa64 | 371 | fh_unlock(&resp->fh); |
1da177e4 LT |
372 | RETURN_STATUS(nfserr); |
373 | } | |
374 | ||
7111c66e | 375 | static __be32 |
1da177e4 LT |
376 | nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp, |
377 | struct nfsd3_renameres *resp) | |
378 | { | |
c4d987ba | 379 | __be32 nfserr; |
1da177e4 LT |
380 | |
381 | dprintk("nfsd: RENAME(3) %s %.*s ->\n", | |
382 | SVCFH_fmt(&argp->ffh), | |
383 | argp->flen, | |
384 | argp->fname); | |
385 | dprintk("nfsd: -> %s %.*s\n", | |
386 | SVCFH_fmt(&argp->tfh), | |
387 | argp->tlen, | |
388 | argp->tname); | |
389 | ||
390 | fh_copy(&resp->ffh, &argp->ffh); | |
391 | fh_copy(&resp->tfh, &argp->tfh); | |
392 | nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, | |
393 | &resp->tfh, argp->tname, argp->tlen); | |
394 | RETURN_STATUS(nfserr); | |
395 | } | |
396 | ||
7111c66e | 397 | static __be32 |
1da177e4 LT |
398 | nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp, |
399 | struct nfsd3_linkres *resp) | |
400 | { | |
c4d987ba | 401 | __be32 nfserr; |
1da177e4 LT |
402 | |
403 | dprintk("nfsd: LINK(3) %s ->\n", | |
404 | SVCFH_fmt(&argp->ffh)); | |
405 | dprintk("nfsd: -> %s %.*s\n", | |
406 | SVCFH_fmt(&argp->tfh), | |
407 | argp->tlen, | |
408 | argp->tname); | |
409 | ||
410 | fh_copy(&resp->fh, &argp->ffh); | |
411 | fh_copy(&resp->tfh, &argp->tfh); | |
412 | nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, | |
413 | &resp->fh); | |
414 | RETURN_STATUS(nfserr); | |
415 | } | |
416 | ||
417 | /* | |
418 | * Read a portion of a directory. | |
419 | */ | |
7111c66e | 420 | static __be32 |
1da177e4 LT |
421 | nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, |
422 | struct nfsd3_readdirres *resp) | |
423 | { | |
c4d987ba AV |
424 | __be32 nfserr; |
425 | int count; | |
1da177e4 LT |
426 | |
427 | dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", | |
428 | SVCFH_fmt(&argp->fh), | |
429 | argp->count, (u32) argp->cookie); | |
430 | ||
431 | /* Make sure we've room for the NULL ptr & eof flag, and shrink to | |
432 | * client read size */ | |
433 | count = (argp->count >> 2) - 2; | |
434 | ||
435 | /* Read directory and encode entries on the fly */ | |
436 | fh_copy(&resp->fh, &argp->fh); | |
437 | ||
438 | resp->buflen = count; | |
439 | resp->common.err = nfs_ok; | |
440 | resp->buffer = argp->buffer; | |
441 | resp->rqstp = rqstp; | |
442 | nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie, | |
443 | &resp->common, nfs3svc_encode_entry); | |
444 | memcpy(resp->verf, argp->verf, 8); | |
445 | resp->count = resp->buffer - argp->buffer; | |
446 | if (resp->offset) | |
447 | xdr_encode_hyper(resp->offset, argp->cookie); | |
448 | ||
449 | RETURN_STATUS(nfserr); | |
450 | } | |
451 | ||
452 | /* | |
453 | * Read a portion of a directory, including file handles and attrs. | |
454 | * For now, we choose to ignore the dircount parameter. | |
455 | */ | |
7111c66e | 456 | static __be32 |
1da177e4 LT |
457 | nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, |
458 | struct nfsd3_readdirres *resp) | |
459 | { | |
c4d987ba AV |
460 | __be32 nfserr; |
461 | int count = 0; | |
1da177e4 LT |
462 | loff_t offset; |
463 | int i; | |
464 | caddr_t page_addr = NULL; | |
465 | ||
466 | dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", | |
467 | SVCFH_fmt(&argp->fh), | |
468 | argp->count, (u32) argp->cookie); | |
469 | ||
470 | /* Convert byte count to number of words (i.e. >> 2), | |
471 | * and reserve room for the NULL ptr & eof flag (-2 words) */ | |
472 | resp->count = (argp->count >> 2) - 2; | |
473 | ||
474 | /* Read directory and encode entries on the fly */ | |
475 | fh_copy(&resp->fh, &argp->fh); | |
476 | ||
477 | resp->common.err = nfs_ok; | |
478 | resp->buffer = argp->buffer; | |
479 | resp->buflen = resp->count; | |
480 | resp->rqstp = rqstp; | |
481 | offset = argp->cookie; | |
482 | nfserr = nfsd_readdir(rqstp, &resp->fh, | |
483 | &offset, | |
484 | &resp->common, | |
485 | nfs3svc_encode_entry_plus); | |
486 | memcpy(resp->verf, argp->verf, 8); | |
487 | for (i=1; i<rqstp->rq_resused ; i++) { | |
488 | page_addr = page_address(rqstp->rq_respages[i]); | |
489 | ||
490 | if (((caddr_t)resp->buffer >= page_addr) && | |
491 | ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { | |
492 | count += (caddr_t)resp->buffer - page_addr; | |
493 | break; | |
494 | } | |
495 | count += PAGE_SIZE; | |
496 | } | |
497 | resp->count = count >> 2; | |
498 | if (resp->offset) { | |
499 | if (unlikely(resp->offset1)) { | |
500 | /* we ended up with offset on a page boundary */ | |
501 | *resp->offset = htonl(offset >> 32); | |
502 | *resp->offset1 = htonl(offset & 0xffffffff); | |
503 | resp->offset1 = NULL; | |
504 | } else { | |
505 | xdr_encode_hyper(resp->offset, offset); | |
506 | } | |
507 | } | |
508 | ||
509 | RETURN_STATUS(nfserr); | |
510 | } | |
511 | ||
512 | /* | |
513 | * Get file system stats | |
514 | */ | |
7111c66e | 515 | static __be32 |
1da177e4 LT |
516 | nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
517 | struct nfsd3_fsstatres *resp) | |
518 | { | |
c4d987ba | 519 | __be32 nfserr; |
1da177e4 LT |
520 | |
521 | dprintk("nfsd: FSSTAT(3) %s\n", | |
522 | SVCFH_fmt(&argp->fh)); | |
523 | ||
04716e66 | 524 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0); |
1da177e4 LT |
525 | fh_put(&argp->fh); |
526 | RETURN_STATUS(nfserr); | |
527 | } | |
528 | ||
529 | /* | |
530 | * Get file system info | |
531 | */ | |
7111c66e | 532 | static __be32 |
1da177e4 LT |
533 | nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
534 | struct nfsd3_fsinfores *resp) | |
535 | { | |
c4d987ba | 536 | __be32 nfserr; |
7adae489 | 537 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
538 | |
539 | dprintk("nfsd: FSINFO(3) %s\n", | |
540 | SVCFH_fmt(&argp->fh)); | |
541 | ||
7adae489 GB |
542 | resp->f_rtmax = max_blocksize; |
543 | resp->f_rtpref = max_blocksize; | |
1da177e4 | 544 | resp->f_rtmult = PAGE_SIZE; |
7adae489 GB |
545 | resp->f_wtmax = max_blocksize; |
546 | resp->f_wtpref = max_blocksize; | |
1da177e4 LT |
547 | resp->f_wtmult = PAGE_SIZE; |
548 | resp->f_dtpref = PAGE_SIZE; | |
549 | resp->f_maxfilesize = ~(u32) 0; | |
550 | resp->f_properties = NFS3_FSF_DEFAULT; | |
551 | ||
04716e66 BF |
552 | nfserr = fh_verify(rqstp, &argp->fh, 0, |
553 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
1da177e4 LT |
554 | |
555 | /* Check special features of the file system. May request | |
556 | * different read/write sizes for file systems known to have | |
557 | * problems with large blocks */ | |
558 | if (nfserr == 0) { | |
559 | struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb; | |
560 | ||
561 | /* Note that we don't care for remote fs's here */ | |
12214cb7 | 562 | if (sb->s_magic == MSDOS_SUPER_MAGIC) { |
1da177e4 LT |
563 | resp->f_properties = NFS3_FSF_BILLYBOY; |
564 | } | |
565 | resp->f_maxfilesize = sb->s_maxbytes; | |
566 | } | |
567 | ||
568 | fh_put(&argp->fh); | |
569 | RETURN_STATUS(nfserr); | |
570 | } | |
571 | ||
572 | /* | |
573 | * Get pathconf info for the specified file | |
574 | */ | |
7111c66e | 575 | static __be32 |
1da177e4 LT |
576 | nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
577 | struct nfsd3_pathconfres *resp) | |
578 | { | |
c4d987ba | 579 | __be32 nfserr; |
1da177e4 LT |
580 | |
581 | dprintk("nfsd: PATHCONF(3) %s\n", | |
582 | SVCFH_fmt(&argp->fh)); | |
583 | ||
584 | /* Set default pathconf */ | |
585 | resp->p_link_max = 255; /* at least */ | |
586 | resp->p_name_max = 255; /* at least */ | |
587 | resp->p_no_trunc = 0; | |
588 | resp->p_chown_restricted = 1; | |
589 | resp->p_case_insensitive = 0; | |
590 | resp->p_case_preserving = 1; | |
591 | ||
8837abca | 592 | nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
593 | |
594 | if (nfserr == 0) { | |
595 | struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb; | |
596 | ||
597 | /* Note that we don't care for remote fs's here */ | |
598 | switch (sb->s_magic) { | |
599 | case EXT2_SUPER_MAGIC: | |
600 | resp->p_link_max = EXT2_LINK_MAX; | |
601 | resp->p_name_max = EXT2_NAME_LEN; | |
602 | break; | |
12214cb7 | 603 | case MSDOS_SUPER_MAGIC: |
1da177e4 LT |
604 | resp->p_case_insensitive = 1; |
605 | resp->p_case_preserving = 0; | |
606 | break; | |
607 | } | |
608 | } | |
609 | ||
610 | fh_put(&argp->fh); | |
611 | RETURN_STATUS(nfserr); | |
612 | } | |
613 | ||
614 | ||
615 | /* | |
616 | * Commit a file (range) to stable storage. | |
617 | */ | |
7111c66e | 618 | static __be32 |
1da177e4 LT |
619 | nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp, |
620 | struct nfsd3_commitres *resp) | |
621 | { | |
c4d987ba | 622 | __be32 nfserr; |
1da177e4 LT |
623 | |
624 | dprintk("nfsd: COMMIT(3) %s %u@%Lu\n", | |
625 | SVCFH_fmt(&argp->fh), | |
626 | argp->count, | |
627 | (unsigned long long) argp->offset); | |
628 | ||
629 | if (argp->offset > NFS_OFFSET_MAX) | |
630 | RETURN_STATUS(nfserr_inval); | |
631 | ||
632 | fh_copy(&resp->fh, &argp->fh); | |
633 | nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count); | |
634 | ||
635 | RETURN_STATUS(nfserr); | |
636 | } | |
637 | ||
638 | ||
639 | /* | |
640 | * NFSv3 Server procedures. | |
641 | * Only the results of non-idempotent operations are cached. | |
642 | */ | |
1da177e4 LT |
643 | #define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle |
644 | #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat | |
645 | #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat | |
646 | #define nfsd3_mkdirargs nfsd3_createargs | |
647 | #define nfsd3_readdirplusargs nfsd3_readdirargs | |
648 | #define nfsd3_fhandleargs nfsd_fhandle | |
649 | #define nfsd3_fhandleres nfsd3_attrstat | |
650 | #define nfsd3_attrstatres nfsd3_attrstat | |
651 | #define nfsd3_wccstatres nfsd3_attrstat | |
652 | #define nfsd3_createres nfsd3_diropres | |
653 | #define nfsd3_voidres nfsd3_voidargs | |
654 | struct nfsd3_voidargs { int dummy; }; | |
655 | ||
656 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
657 | { (svc_procfunc) nfsd3_proc_##name, \ | |
658 | (kxdrproc_t) nfs3svc_decode_##argt##args, \ | |
659 | (kxdrproc_t) nfs3svc_encode_##rest##res, \ | |
660 | (kxdrproc_t) nfs3svc_release_##relt, \ | |
661 | sizeof(struct nfsd3_##argt##args), \ | |
662 | sizeof(struct nfsd3_##rest##res), \ | |
663 | 0, \ | |
664 | cache, \ | |
665 | respsize, \ | |
666 | } | |
667 | ||
668 | #define ST 1 /* status*/ | |
669 | #define FH 17 /* filehandle with length */ | |
670 | #define AT 21 /* attributes */ | |
671 | #define pAT (1+AT) /* post attributes - conditional */ | |
672 | #define WC (7+pAT) /* WCC attributes */ | |
673 | ||
674 | static struct svc_procedure nfsd_procedures3[22] = { | |
b9081d90 YZ |
675 | [NFS3PROC_NULL] = { |
676 | .pc_func = (svc_procfunc) nfsd3_proc_null, | |
677 | .pc_encode = (kxdrproc_t) nfs3svc_encode_voidres, | |
678 | .pc_argsize = sizeof(struct nfsd3_voidargs), | |
679 | .pc_ressize = sizeof(struct nfsd3_voidres), | |
680 | .pc_cachetype = RC_NOCACHE, | |
681 | .pc_xdrressize = ST, | |
682 | }, | |
683 | [NFS3PROC_GETATTR] = { | |
684 | .pc_func = (svc_procfunc) nfsd3_proc_getattr, | |
685 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
686 | .pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres, | |
687 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
688 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
689 | .pc_ressize = sizeof(struct nfsd3_attrstatres), | |
690 | .pc_cachetype = RC_NOCACHE, | |
691 | .pc_xdrressize = ST+AT, | |
692 | }, | |
693 | [NFS3PROC_SETATTR] = { | |
694 | .pc_func = (svc_procfunc) nfsd3_proc_setattr, | |
695 | .pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs, | |
696 | .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres, | |
697 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
698 | .pc_argsize = sizeof(struct nfsd3_sattrargs), | |
699 | .pc_ressize = sizeof(struct nfsd3_wccstatres), | |
700 | .pc_cachetype = RC_REPLBUFF, | |
701 | .pc_xdrressize = ST+WC, | |
702 | }, | |
703 | [NFS3PROC_LOOKUP] = { | |
704 | .pc_func = (svc_procfunc) nfsd3_proc_lookup, | |
705 | .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs, | |
706 | .pc_encode = (kxdrproc_t) nfs3svc_encode_diropres, | |
707 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
708 | .pc_argsize = sizeof(struct nfsd3_diropargs), | |
709 | .pc_ressize = sizeof(struct nfsd3_diropres), | |
710 | .pc_cachetype = RC_NOCACHE, | |
711 | .pc_xdrressize = ST+FH+pAT+pAT, | |
712 | }, | |
713 | [NFS3PROC_ACCESS] = { | |
714 | .pc_func = (svc_procfunc) nfsd3_proc_access, | |
715 | .pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs, | |
716 | .pc_encode = (kxdrproc_t) nfs3svc_encode_accessres, | |
717 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
718 | .pc_argsize = sizeof(struct nfsd3_accessargs), | |
719 | .pc_ressize = sizeof(struct nfsd3_accessres), | |
720 | .pc_cachetype = RC_NOCACHE, | |
721 | .pc_xdrressize = ST+pAT+1, | |
722 | }, | |
723 | [NFS3PROC_READLINK] = { | |
724 | .pc_func = (svc_procfunc) nfsd3_proc_readlink, | |
725 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs, | |
726 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres, | |
727 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
728 | .pc_argsize = sizeof(struct nfsd3_readlinkargs), | |
729 | .pc_ressize = sizeof(struct nfsd3_readlinkres), | |
730 | .pc_cachetype = RC_NOCACHE, | |
731 | .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4, | |
732 | }, | |
733 | [NFS3PROC_READ] = { | |
734 | .pc_func = (svc_procfunc) nfsd3_proc_read, | |
735 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readargs, | |
736 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readres, | |
737 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
738 | .pc_argsize = sizeof(struct nfsd3_readargs), | |
739 | .pc_ressize = sizeof(struct nfsd3_readres), | |
740 | .pc_cachetype = RC_NOCACHE, | |
741 | .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4, | |
742 | }, | |
743 | [NFS3PROC_WRITE] = { | |
744 | .pc_func = (svc_procfunc) nfsd3_proc_write, | |
745 | .pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs, | |
746 | .pc_encode = (kxdrproc_t) nfs3svc_encode_writeres, | |
747 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
748 | .pc_argsize = sizeof(struct nfsd3_writeargs), | |
749 | .pc_ressize = sizeof(struct nfsd3_writeres), | |
750 | .pc_cachetype = RC_REPLBUFF, | |
751 | .pc_xdrressize = ST+WC+4, | |
752 | }, | |
753 | [NFS3PROC_CREATE] = { | |
754 | .pc_func = (svc_procfunc) nfsd3_proc_create, | |
755 | .pc_decode = (kxdrproc_t) nfs3svc_decode_createargs, | |
756 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
757 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
758 | .pc_argsize = sizeof(struct nfsd3_createargs), | |
759 | .pc_ressize = sizeof(struct nfsd3_createres), | |
760 | .pc_cachetype = RC_REPLBUFF, | |
761 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
762 | }, | |
763 | [NFS3PROC_MKDIR] = { | |
764 | .pc_func = (svc_procfunc) nfsd3_proc_mkdir, | |
765 | .pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs, | |
766 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
767 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
768 | .pc_argsize = sizeof(struct nfsd3_mkdirargs), | |
769 | .pc_ressize = sizeof(struct nfsd3_createres), | |
770 | .pc_cachetype = RC_REPLBUFF, | |
771 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
772 | }, | |
773 | [NFS3PROC_SYMLINK] = { | |
774 | .pc_func = (svc_procfunc) nfsd3_proc_symlink, | |
775 | .pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs, | |
776 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
777 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
778 | .pc_argsize = sizeof(struct nfsd3_symlinkargs), | |
779 | .pc_ressize = sizeof(struct nfsd3_createres), | |
780 | .pc_cachetype = RC_REPLBUFF, | |
781 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
782 | }, | |
783 | [NFS3PROC_MKNOD] = { | |
784 | .pc_func = (svc_procfunc) nfsd3_proc_mknod, | |
785 | .pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs, | |
786 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
787 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
788 | .pc_argsize = sizeof(struct nfsd3_mknodargs), | |
789 | .pc_ressize = sizeof(struct nfsd3_createres), | |
790 | .pc_cachetype = RC_REPLBUFF, | |
791 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
792 | }, | |
793 | [NFS3PROC_REMOVE] = { | |
794 | .pc_func = (svc_procfunc) nfsd3_proc_remove, | |
795 | .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs, | |
796 | .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres, | |
797 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
798 | .pc_argsize = sizeof(struct nfsd3_diropargs), | |
799 | .pc_ressize = sizeof(struct nfsd3_wccstatres), | |
800 | .pc_cachetype = RC_REPLBUFF, | |
801 | .pc_xdrressize = ST+WC, | |
802 | }, | |
803 | [NFS3PROC_RMDIR] = { | |
804 | .pc_func = (svc_procfunc) nfsd3_proc_rmdir, | |
805 | .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs, | |
806 | .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres, | |
807 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
808 | .pc_argsize = sizeof(struct nfsd3_diropargs), | |
809 | .pc_ressize = sizeof(struct nfsd3_wccstatres), | |
810 | .pc_cachetype = RC_REPLBUFF, | |
811 | .pc_xdrressize = ST+WC, | |
812 | }, | |
813 | [NFS3PROC_RENAME] = { | |
814 | .pc_func = (svc_procfunc) nfsd3_proc_rename, | |
815 | .pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs, | |
816 | .pc_encode = (kxdrproc_t) nfs3svc_encode_renameres, | |
817 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
818 | .pc_argsize = sizeof(struct nfsd3_renameargs), | |
819 | .pc_ressize = sizeof(struct nfsd3_renameres), | |
820 | .pc_cachetype = RC_REPLBUFF, | |
821 | .pc_xdrressize = ST+WC+WC, | |
822 | }, | |
823 | [NFS3PROC_LINK] = { | |
824 | .pc_func = (svc_procfunc) nfsd3_proc_link, | |
825 | .pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs, | |
826 | .pc_encode = (kxdrproc_t) nfs3svc_encode_linkres, | |
827 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
828 | .pc_argsize = sizeof(struct nfsd3_linkargs), | |
829 | .pc_ressize = sizeof(struct nfsd3_linkres), | |
830 | .pc_cachetype = RC_REPLBUFF, | |
831 | .pc_xdrressize = ST+pAT+WC, | |
832 | }, | |
833 | [NFS3PROC_READDIR] = { | |
834 | .pc_func = (svc_procfunc) nfsd3_proc_readdir, | |
835 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs, | |
836 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres, | |
837 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
838 | .pc_argsize = sizeof(struct nfsd3_readdirargs), | |
839 | .pc_ressize = sizeof(struct nfsd3_readdirres), | |
840 | .pc_cachetype = RC_NOCACHE, | |
841 | }, | |
842 | [NFS3PROC_READDIRPLUS] = { | |
843 | .pc_func = (svc_procfunc) nfsd3_proc_readdirplus, | |
844 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs, | |
845 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres, | |
846 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
847 | .pc_argsize = sizeof(struct nfsd3_readdirplusargs), | |
848 | .pc_ressize = sizeof(struct nfsd3_readdirres), | |
849 | .pc_cachetype = RC_NOCACHE, | |
850 | }, | |
851 | [NFS3PROC_FSSTAT] = { | |
852 | .pc_func = (svc_procfunc) nfsd3_proc_fsstat, | |
853 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
854 | .pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres, | |
855 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
856 | .pc_ressize = sizeof(struct nfsd3_fsstatres), | |
857 | .pc_cachetype = RC_NOCACHE, | |
858 | .pc_xdrressize = ST+pAT+2*6+1, | |
859 | }, | |
860 | [NFS3PROC_FSINFO] = { | |
861 | .pc_func = (svc_procfunc) nfsd3_proc_fsinfo, | |
862 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
863 | .pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores, | |
864 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
865 | .pc_ressize = sizeof(struct nfsd3_fsinfores), | |
866 | .pc_cachetype = RC_NOCACHE, | |
867 | .pc_xdrressize = ST+pAT+12, | |
868 | }, | |
869 | [NFS3PROC_PATHCONF] = { | |
870 | .pc_func = (svc_procfunc) nfsd3_proc_pathconf, | |
871 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
872 | .pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres, | |
873 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
874 | .pc_ressize = sizeof(struct nfsd3_pathconfres), | |
875 | .pc_cachetype = RC_NOCACHE, | |
876 | .pc_xdrressize = ST+pAT+6, | |
877 | }, | |
878 | [NFS3PROC_COMMIT] = { | |
879 | .pc_func = (svc_procfunc) nfsd3_proc_commit, | |
880 | .pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs, | |
881 | .pc_encode = (kxdrproc_t) nfs3svc_encode_commitres, | |
882 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
883 | .pc_argsize = sizeof(struct nfsd3_commitargs), | |
884 | .pc_ressize = sizeof(struct nfsd3_commitres), | |
885 | .pc_cachetype = RC_NOCACHE, | |
886 | .pc_xdrressize = ST+WC+2, | |
887 | }, | |
1da177e4 LT |
888 | }; |
889 | ||
890 | struct svc_version nfsd_version3 = { | |
891 | .vs_vers = 3, | |
892 | .vs_nproc = 22, | |
893 | .vs_proc = nfsd_procedures3, | |
894 | .vs_dispatch = nfsd_dispatch, | |
895 | .vs_xdrsize = NFS3_SVC_XDRSIZE, | |
896 | }; |