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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 | ||
846f2fcd DS |
39 | static int |
40 | nfsd_return_attrs(int err, struct nfsd_attrstat *resp) | |
41 | { | |
42 | if (err) return err; | |
43 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_mnt, | |
44 | resp->fh.fh_dentry, | |
45 | &resp->stat)); | |
46 | } | |
47 | static int | |
48 | nfsd_return_dirop(int err, struct nfsd_diropres *resp) | |
49 | { | |
50 | if (err) return err; | |
51 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_mnt, | |
52 | resp->fh.fh_dentry, | |
53 | &resp->stat)); | |
54 | } | |
1da177e4 LT |
55 | /* |
56 | * Get a file's attributes | |
57 | * N.B. After this call resp->fh needs an fh_put | |
58 | */ | |
59 | static int | |
60 | nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, | |
61 | struct nfsd_attrstat *resp) | |
62 | { | |
846f2fcd | 63 | int nfserr; |
1da177e4 LT |
64 | dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh)); |
65 | ||
66 | fh_copy(&resp->fh, &argp->fh); | |
846f2fcd DS |
67 | nfserr = fh_verify(rqstp, &resp->fh, 0, MAY_NOP); |
68 | return nfsd_return_attrs(nfserr, resp); | |
1da177e4 LT |
69 | } |
70 | ||
71 | /* | |
72 | * Set a file's attributes | |
73 | * N.B. After this call resp->fh needs an fh_put | |
74 | */ | |
75 | static int | |
76 | nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp, | |
77 | struct nfsd_attrstat *resp) | |
78 | { | |
846f2fcd | 79 | int nfserr; |
1da177e4 LT |
80 | dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", |
81 | SVCFH_fmt(&argp->fh), | |
82 | argp->attrs.ia_valid, (long) argp->attrs.ia_size); | |
83 | ||
84 | fh_copy(&resp->fh, &argp->fh); | |
846f2fcd DS |
85 | nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0); |
86 | return nfsd_return_attrs(nfserr, resp); | |
1da177e4 LT |
87 | } |
88 | ||
89 | /* | |
90 | * Look up a path name component | |
91 | * Note: the dentry in the resp->fh may be negative if the file | |
92 | * doesn't exist yet. | |
93 | * N.B. After this call resp->fh needs an fh_put | |
94 | */ | |
95 | static int | |
96 | nfsd_proc_lookup(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
97 | struct nfsd_diropres *resp) | |
98 | { | |
99 | int nfserr; | |
100 | ||
101 | dprintk("nfsd: LOOKUP %s %.*s\n", | |
102 | SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
103 | ||
104 | fh_init(&resp->fh, NFS_FHSIZE); | |
105 | nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, | |
106 | &resp->fh); | |
107 | ||
108 | fh_put(&argp->fh); | |
846f2fcd | 109 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
110 | } |
111 | ||
112 | /* | |
113 | * Read a symlink. | |
114 | */ | |
115 | static int | |
116 | nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp, | |
117 | struct nfsd_readlinkres *resp) | |
118 | { | |
119 | int nfserr; | |
120 | ||
121 | dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); | |
122 | ||
123 | /* Read the symlink. */ | |
124 | resp->len = NFS_MAXPATHLEN; | |
125 | nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len); | |
126 | ||
127 | fh_put(&argp->fh); | |
128 | return nfserr; | |
129 | } | |
130 | ||
131 | /* | |
132 | * Read a portion of a file. | |
133 | * N.B. After this call resp->fh needs an fh_put | |
134 | */ | |
135 | static int | |
136 | nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp, | |
137 | struct nfsd_readres *resp) | |
138 | { | |
139 | int nfserr; | |
140 | ||
141 | dprintk("nfsd: READ %s %d bytes at %d\n", | |
142 | SVCFH_fmt(&argp->fh), | |
143 | argp->count, argp->offset); | |
144 | ||
145 | /* Obtain buffer pointer for payload. 19 is 1 word for | |
146 | * status, 17 words for fattr, and 1 word for the byte count. | |
147 | */ | |
148 | ||
149 | if (NFSSVC_MAXBLKSIZE < argp->count) { | |
150 | printk(KERN_NOTICE | |
151 | "oversized read request from %u.%u.%u.%u:%d (%d bytes)\n", | |
152 | NIPQUAD(rqstp->rq_addr.sin_addr.s_addr), | |
153 | ntohs(rqstp->rq_addr.sin_port), | |
154 | argp->count); | |
155 | argp->count = NFSSVC_MAXBLKSIZE; | |
156 | } | |
157 | svc_reserve(rqstp, (19<<2) + argp->count + 4); | |
158 | ||
159 | resp->count = argp->count; | |
160 | nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
161 | argp->offset, | |
162 | argp->vec, argp->vlen, | |
163 | &resp->count); | |
164 | ||
846f2fcd DS |
165 | if (nfserr) return nfserr; |
166 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_mnt, | |
167 | resp->fh.fh_dentry, | |
168 | &resp->stat)); | |
1da177e4 LT |
169 | } |
170 | ||
171 | /* | |
172 | * Write data to a file | |
173 | * N.B. After this call resp->fh needs an fh_put | |
174 | */ | |
175 | static int | |
176 | nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp, | |
177 | struct nfsd_attrstat *resp) | |
178 | { | |
179 | int nfserr; | |
180 | int stable = 1; | |
181 | ||
182 | dprintk("nfsd: WRITE %s %d bytes at %d\n", | |
183 | SVCFH_fmt(&argp->fh), | |
184 | argp->len, argp->offset); | |
185 | ||
186 | nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
187 | argp->offset, | |
188 | argp->vec, argp->vlen, | |
189 | argp->len, | |
190 | &stable); | |
846f2fcd | 191 | return nfsd_return_attrs(nfserr, resp); |
1da177e4 LT |
192 | } |
193 | ||
194 | /* | |
195 | * CREATE processing is complicated. The keyword here is `overloaded.' | |
196 | * The parent directory is kept locked between the check for existence | |
197 | * and the actual create() call in compliance with VFS protocols. | |
198 | * N.B. After this call _both_ argp->fh and resp->fh need an fh_put | |
199 | */ | |
200 | static int | |
201 | nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp, | |
202 | struct nfsd_diropres *resp) | |
203 | { | |
204 | svc_fh *dirfhp = &argp->fh; | |
205 | svc_fh *newfhp = &resp->fh; | |
206 | struct iattr *attr = &argp->attrs; | |
207 | struct inode *inode; | |
208 | struct dentry *dchild; | |
209 | int nfserr, type, mode; | |
210 | dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size); | |
211 | ||
212 | dprintk("nfsd: CREATE %s %.*s\n", | |
213 | SVCFH_fmt(dirfhp), argp->len, argp->name); | |
214 | ||
215 | /* First verify the parent file handle */ | |
216 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, MAY_EXEC); | |
217 | if (nfserr) | |
218 | goto done; /* must fh_put dirfhp even on error */ | |
219 | ||
220 | /* Check for MAY_WRITE in nfsd_create if necessary */ | |
221 | ||
222 | nfserr = nfserr_acces; | |
223 | if (!argp->len) | |
224 | goto done; | |
225 | nfserr = nfserr_exist; | |
226 | if (isdotent(argp->name, argp->len)) | |
227 | goto done; | |
7ed94296 | 228 | fh_lock_nested(dirfhp, I_MUTEX_PARENT); |
1da177e4 LT |
229 | dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); |
230 | if (IS_ERR(dchild)) { | |
231 | nfserr = nfserrno(PTR_ERR(dchild)); | |
232 | goto out_unlock; | |
233 | } | |
234 | fh_init(newfhp, NFS_FHSIZE); | |
235 | nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); | |
236 | if (!nfserr && !dchild->d_inode) | |
237 | nfserr = nfserr_noent; | |
238 | dput(dchild); | |
239 | if (nfserr) { | |
240 | if (nfserr != nfserr_noent) | |
241 | goto out_unlock; | |
242 | /* | |
243 | * If the new file handle wasn't verified, we can't tell | |
244 | * whether the file exists or not. Time to bail ... | |
245 | */ | |
246 | nfserr = nfserr_acces; | |
247 | if (!newfhp->fh_dentry) { | |
248 | printk(KERN_WARNING | |
249 | "nfsd_proc_create: file handle not verified\n"); | |
250 | goto out_unlock; | |
251 | } | |
252 | } | |
253 | ||
254 | inode = newfhp->fh_dentry->d_inode; | |
255 | ||
256 | /* Unfudge the mode bits */ | |
257 | if (attr->ia_valid & ATTR_MODE) { | |
258 | type = attr->ia_mode & S_IFMT; | |
259 | mode = attr->ia_mode & ~S_IFMT; | |
260 | if (!type) { | |
261 | /* no type, so if target exists, assume same as that, | |
262 | * else assume a file */ | |
263 | if (inode) { | |
264 | type = inode->i_mode & S_IFMT; | |
265 | switch(type) { | |
266 | case S_IFCHR: | |
267 | case S_IFBLK: | |
268 | /* reserve rdev for later checking */ | |
269 | rdev = inode->i_rdev; | |
270 | attr->ia_valid |= ATTR_SIZE; | |
271 | ||
272 | /* FALLTHROUGH */ | |
273 | case S_IFIFO: | |
274 | /* this is probably a permission check.. | |
275 | * at least IRIX implements perm checking on | |
276 | * echo thing > device-special-file-or-pipe | |
277 | * by doing a CREATE with type==0 | |
278 | */ | |
279 | nfserr = nfsd_permission(newfhp->fh_export, | |
280 | newfhp->fh_dentry, | |
281 | MAY_WRITE|MAY_LOCAL_ACCESS); | |
282 | if (nfserr && nfserr != nfserr_rofs) | |
283 | goto out_unlock; | |
284 | } | |
285 | } else | |
286 | type = S_IFREG; | |
287 | } | |
288 | } else if (inode) { | |
289 | type = inode->i_mode & S_IFMT; | |
290 | mode = inode->i_mode & ~S_IFMT; | |
291 | } else { | |
292 | type = S_IFREG; | |
293 | mode = 0; /* ??? */ | |
294 | } | |
295 | ||
296 | attr->ia_valid |= ATTR_MODE; | |
297 | attr->ia_mode = mode; | |
298 | ||
299 | /* Special treatment for non-regular files according to the | |
300 | * gospel of sun micro | |
301 | */ | |
302 | if (type != S_IFREG) { | |
303 | int is_borc = 0; | |
304 | if (type != S_IFBLK && type != S_IFCHR) { | |
305 | rdev = 0; | |
306 | } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) { | |
307 | /* If you think you've seen the worst, grok this. */ | |
308 | type = S_IFIFO; | |
309 | } else { | |
310 | /* Okay, char or block special */ | |
311 | is_borc = 1; | |
312 | if (!rdev) | |
313 | rdev = wanted; | |
314 | } | |
315 | ||
316 | /* we've used the SIZE information, so discard it */ | |
317 | attr->ia_valid &= ~ATTR_SIZE; | |
318 | ||
319 | /* Make sure the type and device matches */ | |
320 | nfserr = nfserr_exist; | |
321 | if (inode && type != (inode->i_mode & S_IFMT)) | |
322 | goto out_unlock; | |
323 | } | |
324 | ||
325 | nfserr = 0; | |
326 | if (!inode) { | |
327 | /* File doesn't exist. Create it and set attrs */ | |
328 | nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len, | |
329 | attr, type, rdev, newfhp); | |
330 | } else if (type == S_IFREG) { | |
331 | dprintk("nfsd: existing %s, valid=%x, size=%ld\n", | |
332 | argp->name, attr->ia_valid, (long) attr->ia_size); | |
333 | /* File already exists. We ignore all attributes except | |
334 | * size, so that creat() behaves exactly like | |
335 | * open(..., O_CREAT|O_TRUNC|O_WRONLY). | |
336 | */ | |
337 | attr->ia_valid &= ATTR_SIZE; | |
338 | if (attr->ia_valid) | |
339 | nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0); | |
340 | } | |
341 | ||
342 | out_unlock: | |
343 | /* We don't really need to unlock, as fh_put does it. */ | |
344 | fh_unlock(dirfhp); | |
345 | ||
346 | done: | |
347 | fh_put(dirfhp); | |
846f2fcd | 348 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
349 | } |
350 | ||
351 | static int | |
352 | nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
353 | void *resp) | |
354 | { | |
355 | int nfserr; | |
356 | ||
357 | dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), | |
358 | argp->len, argp->name); | |
359 | ||
360 | /* Unlink. -SIFDIR means file must not be a directory */ | |
361 | nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len); | |
362 | fh_put(&argp->fh); | |
363 | return nfserr; | |
364 | } | |
365 | ||
366 | static int | |
367 | nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp, | |
368 | void *resp) | |
369 | { | |
370 | int nfserr; | |
371 | ||
372 | dprintk("nfsd: RENAME %s %.*s -> \n", | |
373 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname); | |
374 | dprintk("nfsd: -> %s %.*s\n", | |
375 | SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname); | |
376 | ||
377 | nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, | |
378 | &argp->tfh, argp->tname, argp->tlen); | |
379 | fh_put(&argp->ffh); | |
380 | fh_put(&argp->tfh); | |
381 | return nfserr; | |
382 | } | |
383 | ||
384 | static int | |
385 | nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp, | |
386 | void *resp) | |
387 | { | |
388 | int nfserr; | |
389 | ||
390 | dprintk("nfsd: LINK %s ->\n", | |
391 | SVCFH_fmt(&argp->ffh)); | |
392 | dprintk("nfsd: %s %.*s\n", | |
393 | SVCFH_fmt(&argp->tfh), | |
394 | argp->tlen, | |
395 | argp->tname); | |
396 | ||
397 | nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, | |
398 | &argp->ffh); | |
399 | fh_put(&argp->ffh); | |
400 | fh_put(&argp->tfh); | |
401 | return nfserr; | |
402 | } | |
403 | ||
404 | static int | |
405 | nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp, | |
406 | void *resp) | |
407 | { | |
408 | struct svc_fh newfh; | |
409 | int nfserr; | |
410 | ||
411 | dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n", | |
412 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, | |
413 | argp->tlen, argp->tname); | |
414 | ||
415 | fh_init(&newfh, NFS_FHSIZE); | |
416 | /* | |
417 | * Create the link, look up new file and set attrs. | |
418 | */ | |
419 | nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, | |
420 | argp->tname, argp->tlen, | |
421 | &newfh, &argp->attrs); | |
422 | ||
423 | ||
424 | fh_put(&argp->ffh); | |
425 | fh_put(&newfh); | |
426 | return nfserr; | |
427 | } | |
428 | ||
429 | /* | |
430 | * Make directory. This operation is not idempotent. | |
431 | * N.B. After this call resp->fh needs an fh_put | |
432 | */ | |
433 | static int | |
434 | nfsd_proc_mkdir(struct svc_rqst *rqstp, struct nfsd_createargs *argp, | |
435 | struct nfsd_diropres *resp) | |
436 | { | |
437 | int nfserr; | |
438 | ||
439 | dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
440 | ||
441 | if (resp->fh.fh_dentry) { | |
442 | printk(KERN_WARNING | |
443 | "nfsd_proc_mkdir: response already verified??\n"); | |
444 | } | |
445 | ||
446 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
447 | fh_init(&resp->fh, NFS_FHSIZE); | |
448 | nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, | |
449 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
450 | fh_put(&argp->fh); | |
846f2fcd | 451 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
452 | } |
453 | ||
454 | /* | |
455 | * Remove a directory | |
456 | */ | |
457 | static int | |
458 | nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
459 | void *resp) | |
460 | { | |
461 | int nfserr; | |
462 | ||
463 | dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
464 | ||
465 | nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len); | |
466 | fh_put(&argp->fh); | |
467 | return nfserr; | |
468 | } | |
469 | ||
470 | /* | |
471 | * Read a portion of a directory. | |
472 | */ | |
473 | static int | |
474 | nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp, | |
475 | struct nfsd_readdirres *resp) | |
476 | { | |
477 | int nfserr, count; | |
478 | loff_t offset; | |
479 | ||
480 | dprintk("nfsd: READDIR %s %d bytes at %d\n", | |
481 | SVCFH_fmt(&argp->fh), | |
482 | argp->count, argp->cookie); | |
483 | ||
484 | /* Shrink to the client read size */ | |
485 | count = (argp->count >> 2) - 2; | |
486 | ||
487 | /* Make sure we've room for the NULL ptr & eof flag */ | |
488 | count -= 2; | |
489 | if (count < 0) | |
490 | count = 0; | |
491 | ||
492 | resp->buffer = argp->buffer; | |
493 | resp->offset = NULL; | |
494 | resp->buflen = count; | |
495 | resp->common.err = nfs_ok; | |
496 | /* Read directory and encode entries on the fly */ | |
497 | offset = argp->cookie; | |
498 | nfserr = nfsd_readdir(rqstp, &argp->fh, &offset, | |
499 | &resp->common, nfssvc_encode_entry); | |
500 | ||
501 | resp->count = resp->buffer - argp->buffer; | |
502 | if (resp->offset) | |
503 | *resp->offset = htonl(offset); | |
504 | ||
505 | fh_put(&argp->fh); | |
506 | return nfserr; | |
507 | } | |
508 | ||
509 | /* | |
510 | * Get file system info | |
511 | */ | |
512 | static int | |
513 | nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, | |
514 | struct nfsd_statfsres *resp) | |
515 | { | |
516 | int nfserr; | |
517 | ||
518 | dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); | |
519 | ||
520 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats); | |
521 | fh_put(&argp->fh); | |
522 | return nfserr; | |
523 | } | |
524 | ||
525 | /* | |
526 | * NFSv2 Server procedures. | |
527 | * Only the results of non-idempotent operations are cached. | |
528 | */ | |
529 | #define nfsd_proc_none NULL | |
530 | #define nfssvc_release_none NULL | |
531 | struct nfsd_void { int dummy; }; | |
532 | ||
533 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
534 | { (svc_procfunc) nfsd_proc_##name, \ | |
535 | (kxdrproc_t) nfssvc_decode_##argt, \ | |
536 | (kxdrproc_t) nfssvc_encode_##rest, \ | |
537 | (kxdrproc_t) nfssvc_release_##relt, \ | |
538 | sizeof(struct nfsd_##argt), \ | |
539 | sizeof(struct nfsd_##rest), \ | |
540 | 0, \ | |
541 | cache, \ | |
542 | respsize, \ | |
543 | } | |
544 | ||
545 | #define ST 1 /* status */ | |
546 | #define FH 8 /* filehandle */ | |
547 | #define AT 18 /* attributes */ | |
548 | ||
549 | static struct svc_procedure nfsd_procedures2[18] = { | |
550 | PROC(null, void, void, none, RC_NOCACHE, ST), | |
551 | PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT), | |
552 | PROC(setattr, sattrargs, attrstat, fhandle, RC_REPLBUFF, ST+AT), | |
553 | PROC(none, void, void, none, RC_NOCACHE, ST), | |
554 | PROC(lookup, diropargs, diropres, fhandle, RC_NOCACHE, ST+FH+AT), | |
555 | PROC(readlink, readlinkargs, readlinkres, none, RC_NOCACHE, ST+1+NFS_MAXPATHLEN/4), | |
7775f4c8 | 556 | PROC(read, readargs, readres, fhandle, RC_NOCACHE, ST+AT+1+NFSSVC_MAXBLKSIZE/4), |
1da177e4 LT |
557 | PROC(none, void, void, none, RC_NOCACHE, ST), |
558 | PROC(write, writeargs, attrstat, fhandle, RC_REPLBUFF, ST+AT), | |
559 | PROC(create, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT), | |
560 | PROC(remove, diropargs, void, none, RC_REPLSTAT, ST), | |
561 | PROC(rename, renameargs, void, none, RC_REPLSTAT, ST), | |
562 | PROC(link, linkargs, void, none, RC_REPLSTAT, ST), | |
563 | PROC(symlink, symlinkargs, void, none, RC_REPLSTAT, ST), | |
564 | PROC(mkdir, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT), | |
565 | PROC(rmdir, diropargs, void, none, RC_REPLSTAT, ST), | |
566 | PROC(readdir, readdirargs, readdirres, none, RC_NOCACHE, 0), | |
567 | PROC(statfs, fhandle, statfsres, none, RC_NOCACHE, ST+5), | |
568 | }; | |
569 | ||
570 | ||
571 | struct svc_version nfsd_version2 = { | |
572 | .vs_vers = 2, | |
573 | .vs_nproc = 18, | |
574 | .vs_proc = nfsd_procedures2, | |
575 | .vs_dispatch = nfsd_dispatch, | |
576 | .vs_xdrsize = NFS2_SVC_XDRSIZE, | |
577 | }; | |
578 | ||
579 | /* | |
580 | * Map errnos to NFS errnos. | |
581 | */ | |
582 | int | |
583 | nfserrno (int errno) | |
584 | { | |
585 | static struct { | |
586 | int nfserr; | |
587 | int syserr; | |
588 | } nfs_errtbl[] = { | |
589 | { nfs_ok, 0 }, | |
590 | { nfserr_perm, -EPERM }, | |
591 | { nfserr_noent, -ENOENT }, | |
592 | { nfserr_io, -EIO }, | |
593 | { nfserr_nxio, -ENXIO }, | |
594 | { nfserr_acces, -EACCES }, | |
595 | { nfserr_exist, -EEXIST }, | |
596 | { nfserr_xdev, -EXDEV }, | |
597 | { nfserr_mlink, -EMLINK }, | |
598 | { nfserr_nodev, -ENODEV }, | |
599 | { nfserr_notdir, -ENOTDIR }, | |
600 | { nfserr_isdir, -EISDIR }, | |
601 | { nfserr_inval, -EINVAL }, | |
602 | { nfserr_fbig, -EFBIG }, | |
603 | { nfserr_nospc, -ENOSPC }, | |
604 | { nfserr_rofs, -EROFS }, | |
605 | { nfserr_mlink, -EMLINK }, | |
606 | { nfserr_nametoolong, -ENAMETOOLONG }, | |
607 | { nfserr_notempty, -ENOTEMPTY }, | |
608 | #ifdef EDQUOT | |
609 | { nfserr_dquot, -EDQUOT }, | |
610 | #endif | |
611 | { nfserr_stale, -ESTALE }, | |
612 | { nfserr_jukebox, -ETIMEDOUT }, | |
613 | { nfserr_dropit, -EAGAIN }, | |
614 | { nfserr_dropit, -ENOMEM }, | |
615 | { nfserr_badname, -ESRCH }, | |
616 | { nfserr_io, -ETXTBSY }, | |
a838cc49 | 617 | { nfserr_notsupp, -EOPNOTSUPP }, |
1da177e4 LT |
618 | { -1, -EIO } |
619 | }; | |
620 | int i; | |
621 | ||
622 | for (i = 0; nfs_errtbl[i].nfserr != -1; i++) { | |
623 | if (nfs_errtbl[i].syserr == errno) | |
624 | return nfs_errtbl[i].nfserr; | |
625 | } | |
626 | printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno); | |
627 | return nfserr_io; | |
628 | } | |
629 |