Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * nfsproc2.c Process version 2 NFS requests. | |
3 | * linux/fs/nfsd/nfs2proc.c | |
4 | * | |
5 | * Process version 2 NFS requests. | |
6 | * | |
7 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> | |
8 | */ | |
9 | ||
10 | #include <linux/linkage.h> | |
11 | #include <linux/time.h> | |
12 | #include <linux/errno.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/stat.h> | |
15 | #include <linux/fcntl.h> | |
16 | #include <linux/net.h> | |
17 | #include <linux/in.h> | |
18 | #include <linux/namei.h> | |
19 | #include <linux/unistd.h> | |
20 | #include <linux/slab.h> | |
21 | ||
22 | #include <linux/sunrpc/svc.h> | |
23 | #include <linux/nfsd/nfsd.h> | |
24 | #include <linux/nfsd/cache.h> | |
25 | #include <linux/nfsd/xdr.h> | |
26 | ||
27 | typedef struct svc_rqst svc_rqst; | |
28 | typedef struct svc_buf svc_buf; | |
29 | ||
30 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
31 | ||
32 | ||
33 | static int | |
34 | nfsd_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 | * N.B. After this call resp->fh needs an fh_put | |
42 | */ | |
43 | static int | |
44 | nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, | |
45 | struct nfsd_attrstat *resp) | |
46 | { | |
47 | dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh)); | |
48 | ||
49 | fh_copy(&resp->fh, &argp->fh); | |
50 | return fh_verify(rqstp, &resp->fh, 0, MAY_NOP); | |
51 | } | |
52 | ||
53 | /* | |
54 | * Set a file's attributes | |
55 | * N.B. After this call resp->fh needs an fh_put | |
56 | */ | |
57 | static int | |
58 | nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp, | |
59 | struct nfsd_attrstat *resp) | |
60 | { | |
61 | dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", | |
62 | SVCFH_fmt(&argp->fh), | |
63 | argp->attrs.ia_valid, (long) argp->attrs.ia_size); | |
64 | ||
65 | fh_copy(&resp->fh, &argp->fh); | |
66 | return nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0); | |
67 | } | |
68 | ||
69 | /* | |
70 | * Look up a path name component | |
71 | * Note: the dentry in the resp->fh may be negative if the file | |
72 | * doesn't exist yet. | |
73 | * N.B. After this call resp->fh needs an fh_put | |
74 | */ | |
75 | static int | |
76 | nfsd_proc_lookup(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
77 | struct nfsd_diropres *resp) | |
78 | { | |
79 | int nfserr; | |
80 | ||
81 | dprintk("nfsd: LOOKUP %s %.*s\n", | |
82 | SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
83 | ||
84 | fh_init(&resp->fh, NFS_FHSIZE); | |
85 | nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, | |
86 | &resp->fh); | |
87 | ||
88 | fh_put(&argp->fh); | |
89 | return nfserr; | |
90 | } | |
91 | ||
92 | /* | |
93 | * Read a symlink. | |
94 | */ | |
95 | static int | |
96 | nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp, | |
97 | struct nfsd_readlinkres *resp) | |
98 | { | |
99 | int nfserr; | |
100 | ||
101 | dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); | |
102 | ||
103 | /* Read the symlink. */ | |
104 | resp->len = NFS_MAXPATHLEN; | |
105 | nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len); | |
106 | ||
107 | fh_put(&argp->fh); | |
108 | return nfserr; | |
109 | } | |
110 | ||
111 | /* | |
112 | * Read a portion of a file. | |
113 | * N.B. After this call resp->fh needs an fh_put | |
114 | */ | |
115 | static int | |
116 | nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp, | |
117 | struct nfsd_readres *resp) | |
118 | { | |
119 | int nfserr; | |
120 | ||
121 | dprintk("nfsd: READ %s %d bytes at %d\n", | |
122 | SVCFH_fmt(&argp->fh), | |
123 | argp->count, argp->offset); | |
124 | ||
125 | /* Obtain buffer pointer for payload. 19 is 1 word for | |
126 | * status, 17 words for fattr, and 1 word for the byte count. | |
127 | */ | |
128 | ||
129 | if (NFSSVC_MAXBLKSIZE < argp->count) { | |
130 | printk(KERN_NOTICE | |
131 | "oversized read request from %u.%u.%u.%u:%d (%d bytes)\n", | |
132 | NIPQUAD(rqstp->rq_addr.sin_addr.s_addr), | |
133 | ntohs(rqstp->rq_addr.sin_port), | |
134 | argp->count); | |
135 | argp->count = NFSSVC_MAXBLKSIZE; | |
136 | } | |
137 | svc_reserve(rqstp, (19<<2) + argp->count + 4); | |
138 | ||
139 | resp->count = argp->count; | |
140 | nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
141 | argp->offset, | |
142 | argp->vec, argp->vlen, | |
143 | &resp->count); | |
144 | ||
145 | return nfserr; | |
146 | } | |
147 | ||
148 | /* | |
149 | * Write data to a file | |
150 | * N.B. After this call resp->fh needs an fh_put | |
151 | */ | |
152 | static int | |
153 | nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp, | |
154 | struct nfsd_attrstat *resp) | |
155 | { | |
156 | int nfserr; | |
157 | int stable = 1; | |
158 | ||
159 | dprintk("nfsd: WRITE %s %d bytes at %d\n", | |
160 | SVCFH_fmt(&argp->fh), | |
161 | argp->len, argp->offset); | |
162 | ||
163 | nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
164 | argp->offset, | |
165 | argp->vec, argp->vlen, | |
166 | argp->len, | |
167 | &stable); | |
168 | return nfserr; | |
169 | } | |
170 | ||
171 | /* | |
172 | * CREATE processing is complicated. The keyword here is `overloaded.' | |
173 | * The parent directory is kept locked between the check for existence | |
174 | * and the actual create() call in compliance with VFS protocols. | |
175 | * N.B. After this call _both_ argp->fh and resp->fh need an fh_put | |
176 | */ | |
177 | static int | |
178 | nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp, | |
179 | struct nfsd_diropres *resp) | |
180 | { | |
181 | svc_fh *dirfhp = &argp->fh; | |
182 | svc_fh *newfhp = &resp->fh; | |
183 | struct iattr *attr = &argp->attrs; | |
184 | struct inode *inode; | |
185 | struct dentry *dchild; | |
186 | int nfserr, type, mode; | |
187 | dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size); | |
188 | ||
189 | dprintk("nfsd: CREATE %s %.*s\n", | |
190 | SVCFH_fmt(dirfhp), argp->len, argp->name); | |
191 | ||
192 | /* First verify the parent file handle */ | |
193 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, MAY_EXEC); | |
194 | if (nfserr) | |
195 | goto done; /* must fh_put dirfhp even on error */ | |
196 | ||
197 | /* Check for MAY_WRITE in nfsd_create if necessary */ | |
198 | ||
199 | nfserr = nfserr_acces; | |
200 | if (!argp->len) | |
201 | goto done; | |
202 | nfserr = nfserr_exist; | |
203 | if (isdotent(argp->name, argp->len)) | |
204 | goto done; | |
205 | fh_lock(dirfhp); | |
206 | dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); | |
207 | if (IS_ERR(dchild)) { | |
208 | nfserr = nfserrno(PTR_ERR(dchild)); | |
209 | goto out_unlock; | |
210 | } | |
211 | fh_init(newfhp, NFS_FHSIZE); | |
212 | nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); | |
213 | if (!nfserr && !dchild->d_inode) | |
214 | nfserr = nfserr_noent; | |
215 | dput(dchild); | |
216 | if (nfserr) { | |
217 | if (nfserr != nfserr_noent) | |
218 | goto out_unlock; | |
219 | /* | |
220 | * If the new file handle wasn't verified, we can't tell | |
221 | * whether the file exists or not. Time to bail ... | |
222 | */ | |
223 | nfserr = nfserr_acces; | |
224 | if (!newfhp->fh_dentry) { | |
225 | printk(KERN_WARNING | |
226 | "nfsd_proc_create: file handle not verified\n"); | |
227 | goto out_unlock; | |
228 | } | |
229 | } | |
230 | ||
231 | inode = newfhp->fh_dentry->d_inode; | |
232 | ||
233 | /* Unfudge the mode bits */ | |
234 | if (attr->ia_valid & ATTR_MODE) { | |
235 | type = attr->ia_mode & S_IFMT; | |
236 | mode = attr->ia_mode & ~S_IFMT; | |
237 | if (!type) { | |
238 | /* no type, so if target exists, assume same as that, | |
239 | * else assume a file */ | |
240 | if (inode) { | |
241 | type = inode->i_mode & S_IFMT; | |
242 | switch(type) { | |
243 | case S_IFCHR: | |
244 | case S_IFBLK: | |
245 | /* reserve rdev for later checking */ | |
246 | rdev = inode->i_rdev; | |
247 | attr->ia_valid |= ATTR_SIZE; | |
248 | ||
249 | /* FALLTHROUGH */ | |
250 | case S_IFIFO: | |
251 | /* this is probably a permission check.. | |
252 | * at least IRIX implements perm checking on | |
253 | * echo thing > device-special-file-or-pipe | |
254 | * by doing a CREATE with type==0 | |
255 | */ | |
256 | nfserr = nfsd_permission(newfhp->fh_export, | |
257 | newfhp->fh_dentry, | |
258 | MAY_WRITE|MAY_LOCAL_ACCESS); | |
259 | if (nfserr && nfserr != nfserr_rofs) | |
260 | goto out_unlock; | |
261 | } | |
262 | } else | |
263 | type = S_IFREG; | |
264 | } | |
265 | } else if (inode) { | |
266 | type = inode->i_mode & S_IFMT; | |
267 | mode = inode->i_mode & ~S_IFMT; | |
268 | } else { | |
269 | type = S_IFREG; | |
270 | mode = 0; /* ??? */ | |
271 | } | |
272 | ||
273 | attr->ia_valid |= ATTR_MODE; | |
274 | attr->ia_mode = mode; | |
275 | ||
276 | /* Special treatment for non-regular files according to the | |
277 | * gospel of sun micro | |
278 | */ | |
279 | if (type != S_IFREG) { | |
280 | int is_borc = 0; | |
281 | if (type != S_IFBLK && type != S_IFCHR) { | |
282 | rdev = 0; | |
283 | } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) { | |
284 | /* If you think you've seen the worst, grok this. */ | |
285 | type = S_IFIFO; | |
286 | } else { | |
287 | /* Okay, char or block special */ | |
288 | is_borc = 1; | |
289 | if (!rdev) | |
290 | rdev = wanted; | |
291 | } | |
292 | ||
293 | /* we've used the SIZE information, so discard it */ | |
294 | attr->ia_valid &= ~ATTR_SIZE; | |
295 | ||
296 | /* Make sure the type and device matches */ | |
297 | nfserr = nfserr_exist; | |
298 | if (inode && type != (inode->i_mode & S_IFMT)) | |
299 | goto out_unlock; | |
300 | } | |
301 | ||
302 | nfserr = 0; | |
303 | if (!inode) { | |
304 | /* File doesn't exist. Create it and set attrs */ | |
305 | nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len, | |
306 | attr, type, rdev, newfhp); | |
307 | } else if (type == S_IFREG) { | |
308 | dprintk("nfsd: existing %s, valid=%x, size=%ld\n", | |
309 | argp->name, attr->ia_valid, (long) attr->ia_size); | |
310 | /* File already exists. We ignore all attributes except | |
311 | * size, so that creat() behaves exactly like | |
312 | * open(..., O_CREAT|O_TRUNC|O_WRONLY). | |
313 | */ | |
314 | attr->ia_valid &= ATTR_SIZE; | |
315 | if (attr->ia_valid) | |
316 | nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0); | |
317 | } | |
318 | ||
319 | out_unlock: | |
320 | /* We don't really need to unlock, as fh_put does it. */ | |
321 | fh_unlock(dirfhp); | |
322 | ||
323 | done: | |
324 | fh_put(dirfhp); | |
325 | return nfserr; | |
326 | } | |
327 | ||
328 | static int | |
329 | nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
330 | void *resp) | |
331 | { | |
332 | int nfserr; | |
333 | ||
334 | dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), | |
335 | argp->len, argp->name); | |
336 | ||
337 | /* Unlink. -SIFDIR means file must not be a directory */ | |
338 | nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len); | |
339 | fh_put(&argp->fh); | |
340 | return nfserr; | |
341 | } | |
342 | ||
343 | static int | |
344 | nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp, | |
345 | void *resp) | |
346 | { | |
347 | int nfserr; | |
348 | ||
349 | dprintk("nfsd: RENAME %s %.*s -> \n", | |
350 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname); | |
351 | dprintk("nfsd: -> %s %.*s\n", | |
352 | SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname); | |
353 | ||
354 | nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, | |
355 | &argp->tfh, argp->tname, argp->tlen); | |
356 | fh_put(&argp->ffh); | |
357 | fh_put(&argp->tfh); | |
358 | return nfserr; | |
359 | } | |
360 | ||
361 | static int | |
362 | nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp, | |
363 | void *resp) | |
364 | { | |
365 | int nfserr; | |
366 | ||
367 | dprintk("nfsd: LINK %s ->\n", | |
368 | SVCFH_fmt(&argp->ffh)); | |
369 | dprintk("nfsd: %s %.*s\n", | |
370 | SVCFH_fmt(&argp->tfh), | |
371 | argp->tlen, | |
372 | argp->tname); | |
373 | ||
374 | nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, | |
375 | &argp->ffh); | |
376 | fh_put(&argp->ffh); | |
377 | fh_put(&argp->tfh); | |
378 | return nfserr; | |
379 | } | |
380 | ||
381 | static int | |
382 | nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp, | |
383 | void *resp) | |
384 | { | |
385 | struct svc_fh newfh; | |
386 | int nfserr; | |
387 | ||
388 | dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n", | |
389 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, | |
390 | argp->tlen, argp->tname); | |
391 | ||
392 | fh_init(&newfh, NFS_FHSIZE); | |
393 | /* | |
394 | * Create the link, look up new file and set attrs. | |
395 | */ | |
396 | nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, | |
397 | argp->tname, argp->tlen, | |
398 | &newfh, &argp->attrs); | |
399 | ||
400 | ||
401 | fh_put(&argp->ffh); | |
402 | fh_put(&newfh); | |
403 | return nfserr; | |
404 | } | |
405 | ||
406 | /* | |
407 | * Make directory. This operation is not idempotent. | |
408 | * N.B. After this call resp->fh needs an fh_put | |
409 | */ | |
410 | static int | |
411 | nfsd_proc_mkdir(struct svc_rqst *rqstp, struct nfsd_createargs *argp, | |
412 | struct nfsd_diropres *resp) | |
413 | { | |
414 | int nfserr; | |
415 | ||
416 | dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
417 | ||
418 | if (resp->fh.fh_dentry) { | |
419 | printk(KERN_WARNING | |
420 | "nfsd_proc_mkdir: response already verified??\n"); | |
421 | } | |
422 | ||
423 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
424 | fh_init(&resp->fh, NFS_FHSIZE); | |
425 | nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, | |
426 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
427 | fh_put(&argp->fh); | |
428 | return nfserr; | |
429 | } | |
430 | ||
431 | /* | |
432 | * Remove a directory | |
433 | */ | |
434 | static int | |
435 | nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
436 | void *resp) | |
437 | { | |
438 | int nfserr; | |
439 | ||
440 | dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
441 | ||
442 | nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len); | |
443 | fh_put(&argp->fh); | |
444 | return nfserr; | |
445 | } | |
446 | ||
447 | /* | |
448 | * Read a portion of a directory. | |
449 | */ | |
450 | static int | |
451 | nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp, | |
452 | struct nfsd_readdirres *resp) | |
453 | { | |
454 | int nfserr, count; | |
455 | loff_t offset; | |
456 | ||
457 | dprintk("nfsd: READDIR %s %d bytes at %d\n", | |
458 | SVCFH_fmt(&argp->fh), | |
459 | argp->count, argp->cookie); | |
460 | ||
461 | /* Shrink to the client read size */ | |
462 | count = (argp->count >> 2) - 2; | |
463 | ||
464 | /* Make sure we've room for the NULL ptr & eof flag */ | |
465 | count -= 2; | |
466 | if (count < 0) | |
467 | count = 0; | |
468 | ||
469 | resp->buffer = argp->buffer; | |
470 | resp->offset = NULL; | |
471 | resp->buflen = count; | |
472 | resp->common.err = nfs_ok; | |
473 | /* Read directory and encode entries on the fly */ | |
474 | offset = argp->cookie; | |
475 | nfserr = nfsd_readdir(rqstp, &argp->fh, &offset, | |
476 | &resp->common, nfssvc_encode_entry); | |
477 | ||
478 | resp->count = resp->buffer - argp->buffer; | |
479 | if (resp->offset) | |
480 | *resp->offset = htonl(offset); | |
481 | ||
482 | fh_put(&argp->fh); | |
483 | return nfserr; | |
484 | } | |
485 | ||
486 | /* | |
487 | * Get file system info | |
488 | */ | |
489 | static int | |
490 | nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, | |
491 | struct nfsd_statfsres *resp) | |
492 | { | |
493 | int nfserr; | |
494 | ||
495 | dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); | |
496 | ||
497 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats); | |
498 | fh_put(&argp->fh); | |
499 | return nfserr; | |
500 | } | |
501 | ||
502 | /* | |
503 | * NFSv2 Server procedures. | |
504 | * Only the results of non-idempotent operations are cached. | |
505 | */ | |
506 | #define nfsd_proc_none NULL | |
507 | #define nfssvc_release_none NULL | |
508 | struct nfsd_void { int dummy; }; | |
509 | ||
510 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
511 | { (svc_procfunc) nfsd_proc_##name, \ | |
512 | (kxdrproc_t) nfssvc_decode_##argt, \ | |
513 | (kxdrproc_t) nfssvc_encode_##rest, \ | |
514 | (kxdrproc_t) nfssvc_release_##relt, \ | |
515 | sizeof(struct nfsd_##argt), \ | |
516 | sizeof(struct nfsd_##rest), \ | |
517 | 0, \ | |
518 | cache, \ | |
519 | respsize, \ | |
520 | } | |
521 | ||
522 | #define ST 1 /* status */ | |
523 | #define FH 8 /* filehandle */ | |
524 | #define AT 18 /* attributes */ | |
525 | ||
526 | static struct svc_procedure nfsd_procedures2[18] = { | |
527 | PROC(null, void, void, none, RC_NOCACHE, ST), | |
528 | PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT), | |
529 | PROC(setattr, sattrargs, attrstat, fhandle, RC_REPLBUFF, ST+AT), | |
530 | PROC(none, void, void, none, RC_NOCACHE, ST), | |
531 | PROC(lookup, diropargs, diropres, fhandle, RC_NOCACHE, ST+FH+AT), | |
532 | PROC(readlink, readlinkargs, readlinkres, none, RC_NOCACHE, ST+1+NFS_MAXPATHLEN/4), | |
533 | PROC(read, readargs, readres, fhandle, RC_NOCACHE, ST+AT+1+NFSSVC_MAXBLKSIZE), | |
534 | PROC(none, void, void, none, RC_NOCACHE, ST), | |
535 | PROC(write, writeargs, attrstat, fhandle, RC_REPLBUFF, ST+AT), | |
536 | PROC(create, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT), | |
537 | PROC(remove, diropargs, void, none, RC_REPLSTAT, ST), | |
538 | PROC(rename, renameargs, void, none, RC_REPLSTAT, ST), | |
539 | PROC(link, linkargs, void, none, RC_REPLSTAT, ST), | |
540 | PROC(symlink, symlinkargs, void, none, RC_REPLSTAT, ST), | |
541 | PROC(mkdir, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT), | |
542 | PROC(rmdir, diropargs, void, none, RC_REPLSTAT, ST), | |
543 | PROC(readdir, readdirargs, readdirres, none, RC_NOCACHE, 0), | |
544 | PROC(statfs, fhandle, statfsres, none, RC_NOCACHE, ST+5), | |
545 | }; | |
546 | ||
547 | ||
548 | struct svc_version nfsd_version2 = { | |
549 | .vs_vers = 2, | |
550 | .vs_nproc = 18, | |
551 | .vs_proc = nfsd_procedures2, | |
552 | .vs_dispatch = nfsd_dispatch, | |
553 | .vs_xdrsize = NFS2_SVC_XDRSIZE, | |
554 | }; | |
555 | ||
556 | /* | |
557 | * Map errnos to NFS errnos. | |
558 | */ | |
559 | int | |
560 | nfserrno (int errno) | |
561 | { | |
562 | static struct { | |
563 | int nfserr; | |
564 | int syserr; | |
565 | } nfs_errtbl[] = { | |
566 | { nfs_ok, 0 }, | |
567 | { nfserr_perm, -EPERM }, | |
568 | { nfserr_noent, -ENOENT }, | |
569 | { nfserr_io, -EIO }, | |
570 | { nfserr_nxio, -ENXIO }, | |
571 | { nfserr_acces, -EACCES }, | |
572 | { nfserr_exist, -EEXIST }, | |
573 | { nfserr_xdev, -EXDEV }, | |
574 | { nfserr_mlink, -EMLINK }, | |
575 | { nfserr_nodev, -ENODEV }, | |
576 | { nfserr_notdir, -ENOTDIR }, | |
577 | { nfserr_isdir, -EISDIR }, | |
578 | { nfserr_inval, -EINVAL }, | |
579 | { nfserr_fbig, -EFBIG }, | |
580 | { nfserr_nospc, -ENOSPC }, | |
581 | { nfserr_rofs, -EROFS }, | |
582 | { nfserr_mlink, -EMLINK }, | |
583 | { nfserr_nametoolong, -ENAMETOOLONG }, | |
584 | { nfserr_notempty, -ENOTEMPTY }, | |
585 | #ifdef EDQUOT | |
586 | { nfserr_dquot, -EDQUOT }, | |
587 | #endif | |
588 | { nfserr_stale, -ESTALE }, | |
589 | { nfserr_jukebox, -ETIMEDOUT }, | |
590 | { nfserr_dropit, -EAGAIN }, | |
591 | { nfserr_dropit, -ENOMEM }, | |
592 | { nfserr_badname, -ESRCH }, | |
593 | { nfserr_io, -ETXTBSY }, | |
a838cc49 | 594 | { nfserr_notsupp, -EOPNOTSUPP }, |
1da177e4 LT |
595 | { -1, -EIO } |
596 | }; | |
597 | int i; | |
598 | ||
599 | for (i = 0; nfs_errtbl[i].nfserr != -1; i++) { | |
600 | if (nfs_errtbl[i].syserr == errno) | |
601 | return nfs_errtbl[i].nfserr; | |
602 | } | |
603 | printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno); | |
604 | return nfserr_io; | |
605 | } | |
606 |