]>
Commit | Line | Data |
---|---|---|
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/clnt.h> | |
23 | #include <linux/sunrpc/svc.h> | |
24 | #include <linux/nfsd/nfsd.h> | |
25 | #include <linux/nfsd/cache.h> | |
26 | #include <linux/nfsd/xdr.h> | |
27 | ||
28 | typedef struct svc_rqst svc_rqst; | |
29 | typedef struct svc_buf svc_buf; | |
30 | ||
31 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
32 | ||
33 | ||
34 | static __be32 | |
35 | nfsd_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) | |
36 | { | |
37 | return nfs_ok; | |
38 | } | |
39 | ||
40 | static __be32 | |
41 | nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp) | |
42 | { | |
43 | if (err) return err; | |
44 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, | |
45 | resp->fh.fh_dentry, | |
46 | &resp->stat)); | |
47 | } | |
48 | static __be32 | |
49 | nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp) | |
50 | { | |
51 | if (err) return err; | |
52 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, | |
53 | resp->fh.fh_dentry, | |
54 | &resp->stat)); | |
55 | } | |
56 | /* | |
57 | * Get a file's attributes | |
58 | * N.B. After this call resp->fh needs an fh_put | |
59 | */ | |
60 | static __be32 | |
61 | nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, | |
62 | struct nfsd_attrstat *resp) | |
63 | { | |
64 | __be32 nfserr; | |
65 | dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh)); | |
66 | ||
67 | fh_copy(&resp->fh, &argp->fh); | |
68 | nfserr = fh_verify(rqstp, &resp->fh, 0, | |
69 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
70 | return nfsd_return_attrs(nfserr, resp); | |
71 | } | |
72 | ||
73 | /* | |
74 | * Set a file's attributes | |
75 | * N.B. After this call resp->fh needs an fh_put | |
76 | */ | |
77 | static __be32 | |
78 | nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp, | |
79 | struct nfsd_attrstat *resp) | |
80 | { | |
81 | __be32 nfserr; | |
82 | dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", | |
83 | SVCFH_fmt(&argp->fh), | |
84 | argp->attrs.ia_valid, (long) argp->attrs.ia_size); | |
85 | ||
86 | fh_copy(&resp->fh, &argp->fh); | |
87 | nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0); | |
88 | return nfsd_return_attrs(nfserr, resp); | |
89 | } | |
90 | ||
91 | /* | |
92 | * Look up a path name component | |
93 | * Note: the dentry in the resp->fh may be negative if the file | |
94 | * doesn't exist yet. | |
95 | * N.B. After this call resp->fh needs an fh_put | |
96 | */ | |
97 | static __be32 | |
98 | nfsd_proc_lookup(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
99 | struct nfsd_diropres *resp) | |
100 | { | |
101 | __be32 nfserr; | |
102 | ||
103 | dprintk("nfsd: LOOKUP %s %.*s\n", | |
104 | SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
105 | ||
106 | fh_init(&resp->fh, NFS_FHSIZE); | |
107 | nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, | |
108 | &resp->fh); | |
109 | ||
110 | fh_put(&argp->fh); | |
111 | return nfsd_return_dirop(nfserr, resp); | |
112 | } | |
113 | ||
114 | /* | |
115 | * Read a symlink. | |
116 | */ | |
117 | static __be32 | |
118 | nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp, | |
119 | struct nfsd_readlinkres *resp) | |
120 | { | |
121 | __be32 nfserr; | |
122 | ||
123 | dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); | |
124 | ||
125 | /* Read the symlink. */ | |
126 | resp->len = NFS_MAXPATHLEN; | |
127 | nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len); | |
128 | ||
129 | fh_put(&argp->fh); | |
130 | return nfserr; | |
131 | } | |
132 | ||
133 | /* | |
134 | * Read a portion of a file. | |
135 | * N.B. After this call resp->fh needs an fh_put | |
136 | */ | |
137 | static __be32 | |
138 | nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp, | |
139 | struct nfsd_readres *resp) | |
140 | { | |
141 | __be32 nfserr; | |
142 | ||
143 | dprintk("nfsd: READ %s %d bytes at %d\n", | |
144 | SVCFH_fmt(&argp->fh), | |
145 | argp->count, argp->offset); | |
146 | ||
147 | /* Obtain buffer pointer for payload. 19 is 1 word for | |
148 | * status, 17 words for fattr, and 1 word for the byte count. | |
149 | */ | |
150 | ||
151 | if (NFSSVC_MAXBLKSIZE_V2 < argp->count) { | |
152 | char buf[RPC_MAX_ADDRBUFLEN]; | |
153 | printk(KERN_NOTICE | |
154 | "oversized read request from %s (%d bytes)\n", | |
155 | svc_print_addr(rqstp, buf, sizeof(buf)), | |
156 | argp->count); | |
157 | argp->count = NFSSVC_MAXBLKSIZE_V2; | |
158 | } | |
159 | svc_reserve_auth(rqstp, (19<<2) + argp->count + 4); | |
160 | ||
161 | resp->count = argp->count; | |
162 | nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
163 | argp->offset, | |
164 | rqstp->rq_vec, argp->vlen, | |
165 | &resp->count); | |
166 | ||
167 | if (nfserr) return nfserr; | |
168 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, | |
169 | resp->fh.fh_dentry, | |
170 | &resp->stat)); | |
171 | } | |
172 | ||
173 | /* | |
174 | * Write data to a file | |
175 | * N.B. After this call resp->fh needs an fh_put | |
176 | */ | |
177 | static __be32 | |
178 | nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp, | |
179 | struct nfsd_attrstat *resp) | |
180 | { | |
181 | __be32 nfserr; | |
182 | int stable = 1; | |
183 | unsigned long cnt = argp->len; | |
184 | ||
185 | dprintk("nfsd: WRITE %s %d bytes at %d\n", | |
186 | SVCFH_fmt(&argp->fh), | |
187 | argp->len, argp->offset); | |
188 | ||
189 | nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
190 | argp->offset, | |
191 | rqstp->rq_vec, argp->vlen, | |
192 | &cnt, | |
193 | &stable); | |
194 | return nfsd_return_attrs(nfserr, resp); | |
195 | } | |
196 | ||
197 | /* | |
198 | * CREATE processing is complicated. The keyword here is `overloaded.' | |
199 | * The parent directory is kept locked between the check for existence | |
200 | * and the actual create() call in compliance with VFS protocols. | |
201 | * N.B. After this call _both_ argp->fh and resp->fh need an fh_put | |
202 | */ | |
203 | static __be32 | |
204 | nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp, | |
205 | struct nfsd_diropres *resp) | |
206 | { | |
207 | svc_fh *dirfhp = &argp->fh; | |
208 | svc_fh *newfhp = &resp->fh; | |
209 | struct iattr *attr = &argp->attrs; | |
210 | struct inode *inode; | |
211 | struct dentry *dchild; | |
212 | int type, mode; | |
213 | __be32 nfserr; | |
214 | dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size); | |
215 | ||
216 | dprintk("nfsd: CREATE %s %.*s\n", | |
217 | SVCFH_fmt(dirfhp), argp->len, argp->name); | |
218 | ||
219 | /* First verify the parent file handle */ | |
220 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC); | |
221 | if (nfserr) | |
222 | goto done; /* must fh_put dirfhp even on error */ | |
223 | ||
224 | /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */ | |
225 | ||
226 | nfserr = nfserr_acces; | |
227 | if (!argp->len) | |
228 | goto done; | |
229 | nfserr = nfserr_exist; | |
230 | if (isdotent(argp->name, argp->len)) | |
231 | goto done; | |
232 | fh_lock_nested(dirfhp, I_MUTEX_PARENT); | |
233 | dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); | |
234 | if (IS_ERR(dchild)) { | |
235 | nfserr = nfserrno(PTR_ERR(dchild)); | |
236 | goto out_unlock; | |
237 | } | |
238 | fh_init(newfhp, NFS_FHSIZE); | |
239 | nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); | |
240 | if (!nfserr && !dchild->d_inode) | |
241 | nfserr = nfserr_noent; | |
242 | dput(dchild); | |
243 | if (nfserr) { | |
244 | if (nfserr != nfserr_noent) | |
245 | goto out_unlock; | |
246 | /* | |
247 | * If the new file handle wasn't verified, we can't tell | |
248 | * whether the file exists or not. Time to bail ... | |
249 | */ | |
250 | nfserr = nfserr_acces; | |
251 | if (!newfhp->fh_dentry) { | |
252 | printk(KERN_WARNING | |
253 | "nfsd_proc_create: file handle not verified\n"); | |
254 | goto out_unlock; | |
255 | } | |
256 | } | |
257 | ||
258 | inode = newfhp->fh_dentry->d_inode; | |
259 | ||
260 | /* Unfudge the mode bits */ | |
261 | if (attr->ia_valid & ATTR_MODE) { | |
262 | type = attr->ia_mode & S_IFMT; | |
263 | mode = attr->ia_mode & ~S_IFMT; | |
264 | if (!type) { | |
265 | /* no type, so if target exists, assume same as that, | |
266 | * else assume a file */ | |
267 | if (inode) { | |
268 | type = inode->i_mode & S_IFMT; | |
269 | switch(type) { | |
270 | case S_IFCHR: | |
271 | case S_IFBLK: | |
272 | /* reserve rdev for later checking */ | |
273 | rdev = inode->i_rdev; | |
274 | attr->ia_valid |= ATTR_SIZE; | |
275 | ||
276 | /* FALLTHROUGH */ | |
277 | case S_IFIFO: | |
278 | /* this is probably a permission check.. | |
279 | * at least IRIX implements perm checking on | |
280 | * echo thing > device-special-file-or-pipe | |
281 | * by doing a CREATE with type==0 | |
282 | */ | |
283 | nfserr = nfsd_permission(rqstp, | |
284 | newfhp->fh_export, | |
285 | newfhp->fh_dentry, | |
286 | NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS); | |
287 | if (nfserr && nfserr != nfserr_rofs) | |
288 | goto out_unlock; | |
289 | } | |
290 | } else | |
291 | type = S_IFREG; | |
292 | } | |
293 | } else if (inode) { | |
294 | type = inode->i_mode & S_IFMT; | |
295 | mode = inode->i_mode & ~S_IFMT; | |
296 | } else { | |
297 | type = S_IFREG; | |
298 | mode = 0; /* ??? */ | |
299 | } | |
300 | ||
301 | attr->ia_valid |= ATTR_MODE; | |
302 | attr->ia_mode = mode; | |
303 | ||
304 | /* Special treatment for non-regular files according to the | |
305 | * gospel of sun micro | |
306 | */ | |
307 | if (type != S_IFREG) { | |
308 | int is_borc = 0; | |
309 | if (type != S_IFBLK && type != S_IFCHR) { | |
310 | rdev = 0; | |
311 | } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) { | |
312 | /* If you think you've seen the worst, grok this. */ | |
313 | type = S_IFIFO; | |
314 | } else { | |
315 | /* Okay, char or block special */ | |
316 | is_borc = 1; | |
317 | if (!rdev) | |
318 | rdev = wanted; | |
319 | } | |
320 | ||
321 | /* we've used the SIZE information, so discard it */ | |
322 | attr->ia_valid &= ~ATTR_SIZE; | |
323 | ||
324 | /* Make sure the type and device matches */ | |
325 | nfserr = nfserr_exist; | |
326 | if (inode && type != (inode->i_mode & S_IFMT)) | |
327 | goto out_unlock; | |
328 | } | |
329 | ||
330 | nfserr = 0; | |
331 | if (!inode) { | |
332 | /* File doesn't exist. Create it and set attrs */ | |
333 | nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len, | |
334 | attr, type, rdev, newfhp); | |
335 | } else if (type == S_IFREG) { | |
336 | dprintk("nfsd: existing %s, valid=%x, size=%ld\n", | |
337 | argp->name, attr->ia_valid, (long) attr->ia_size); | |
338 | /* File already exists. We ignore all attributes except | |
339 | * size, so that creat() behaves exactly like | |
340 | * open(..., O_CREAT|O_TRUNC|O_WRONLY). | |
341 | */ | |
342 | attr->ia_valid &= ATTR_SIZE; | |
343 | if (attr->ia_valid) | |
344 | nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0); | |
345 | } | |
346 | ||
347 | out_unlock: | |
348 | /* We don't really need to unlock, as fh_put does it. */ | |
349 | fh_unlock(dirfhp); | |
350 | ||
351 | done: | |
352 | fh_put(dirfhp); | |
353 | return nfsd_return_dirop(nfserr, resp); | |
354 | } | |
355 | ||
356 | static __be32 | |
357 | nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
358 | void *resp) | |
359 | { | |
360 | __be32 nfserr; | |
361 | ||
362 | dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), | |
363 | argp->len, argp->name); | |
364 | ||
365 | /* Unlink. -SIFDIR means file must not be a directory */ | |
366 | nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len); | |
367 | fh_put(&argp->fh); | |
368 | return nfserr; | |
369 | } | |
370 | ||
371 | static __be32 | |
372 | nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp, | |
373 | void *resp) | |
374 | { | |
375 | __be32 nfserr; | |
376 | ||
377 | dprintk("nfsd: RENAME %s %.*s -> \n", | |
378 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname); | |
379 | dprintk("nfsd: -> %s %.*s\n", | |
380 | SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname); | |
381 | ||
382 | nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, | |
383 | &argp->tfh, argp->tname, argp->tlen); | |
384 | fh_put(&argp->ffh); | |
385 | fh_put(&argp->tfh); | |
386 | return nfserr; | |
387 | } | |
388 | ||
389 | static __be32 | |
390 | nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp, | |
391 | void *resp) | |
392 | { | |
393 | __be32 nfserr; | |
394 | ||
395 | dprintk("nfsd: LINK %s ->\n", | |
396 | SVCFH_fmt(&argp->ffh)); | |
397 | dprintk("nfsd: %s %.*s\n", | |
398 | SVCFH_fmt(&argp->tfh), | |
399 | argp->tlen, | |
400 | argp->tname); | |
401 | ||
402 | nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, | |
403 | &argp->ffh); | |
404 | fh_put(&argp->ffh); | |
405 | fh_put(&argp->tfh); | |
406 | return nfserr; | |
407 | } | |
408 | ||
409 | static __be32 | |
410 | nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp, | |
411 | void *resp) | |
412 | { | |
413 | struct svc_fh newfh; | |
414 | __be32 nfserr; | |
415 | ||
416 | dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n", | |
417 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, | |
418 | argp->tlen, argp->tname); | |
419 | ||
420 | fh_init(&newfh, NFS_FHSIZE); | |
421 | /* | |
422 | * Create the link, look up new file and set attrs. | |
423 | */ | |
424 | nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, | |
425 | argp->tname, argp->tlen, | |
426 | &newfh, &argp->attrs); | |
427 | ||
428 | ||
429 | fh_put(&argp->ffh); | |
430 | fh_put(&newfh); | |
431 | return nfserr; | |
432 | } | |
433 | ||
434 | /* | |
435 | * Make directory. This operation is not idempotent. | |
436 | * N.B. After this call resp->fh needs an fh_put | |
437 | */ | |
438 | static __be32 | |
439 | nfsd_proc_mkdir(struct svc_rqst *rqstp, struct nfsd_createargs *argp, | |
440 | struct nfsd_diropres *resp) | |
441 | { | |
442 | __be32 nfserr; | |
443 | ||
444 | dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
445 | ||
446 | if (resp->fh.fh_dentry) { | |
447 | printk(KERN_WARNING | |
448 | "nfsd_proc_mkdir: response already verified??\n"); | |
449 | } | |
450 | ||
451 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
452 | fh_init(&resp->fh, NFS_FHSIZE); | |
453 | nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, | |
454 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
455 | fh_put(&argp->fh); | |
456 | return nfsd_return_dirop(nfserr, resp); | |
457 | } | |
458 | ||
459 | /* | |
460 | * Remove a directory | |
461 | */ | |
462 | static __be32 | |
463 | nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, | |
464 | void *resp) | |
465 | { | |
466 | __be32 nfserr; | |
467 | ||
468 | dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
469 | ||
470 | nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len); | |
471 | fh_put(&argp->fh); | |
472 | return nfserr; | |
473 | } | |
474 | ||
475 | /* | |
476 | * Read a portion of a directory. | |
477 | */ | |
478 | static __be32 | |
479 | nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp, | |
480 | struct nfsd_readdirres *resp) | |
481 | { | |
482 | int count; | |
483 | __be32 nfserr; | |
484 | loff_t offset; | |
485 | ||
486 | dprintk("nfsd: READDIR %s %d bytes at %d\n", | |
487 | SVCFH_fmt(&argp->fh), | |
488 | argp->count, argp->cookie); | |
489 | ||
490 | /* Shrink to the client read size */ | |
491 | count = (argp->count >> 2) - 2; | |
492 | ||
493 | /* Make sure we've room for the NULL ptr & eof flag */ | |
494 | count -= 2; | |
495 | if (count < 0) | |
496 | count = 0; | |
497 | ||
498 | resp->buffer = argp->buffer; | |
499 | resp->offset = NULL; | |
500 | resp->buflen = count; | |
501 | resp->common.err = nfs_ok; | |
502 | /* Read directory and encode entries on the fly */ | |
503 | offset = argp->cookie; | |
504 | nfserr = nfsd_readdir(rqstp, &argp->fh, &offset, | |
505 | &resp->common, nfssvc_encode_entry); | |
506 | ||
507 | resp->count = resp->buffer - argp->buffer; | |
508 | if (resp->offset) | |
509 | *resp->offset = htonl(offset); | |
510 | ||
511 | fh_put(&argp->fh); | |
512 | return nfserr; | |
513 | } | |
514 | ||
515 | /* | |
516 | * Get file system info | |
517 | */ | |
518 | static __be32 | |
519 | nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, | |
520 | struct nfsd_statfsres *resp) | |
521 | { | |
522 | __be32 nfserr; | |
523 | ||
524 | dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); | |
525 | ||
526 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, | |
527 | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
528 | fh_put(&argp->fh); | |
529 | return nfserr; | |
530 | } | |
531 | ||
532 | /* | |
533 | * NFSv2 Server procedures. | |
534 | * Only the results of non-idempotent operations are cached. | |
535 | */ | |
536 | struct nfsd_void { int dummy; }; | |
537 | ||
538 | #define ST 1 /* status */ | |
539 | #define FH 8 /* filehandle */ | |
540 | #define AT 18 /* attributes */ | |
541 | ||
542 | static struct svc_procedure nfsd_procedures2[18] = { | |
543 | [NFSPROC_NULL] = { | |
544 | .pc_func = (svc_procfunc) nfsd_proc_null, | |
545 | .pc_decode = (kxdrproc_t) nfssvc_decode_void, | |
546 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
547 | .pc_argsize = sizeof(struct nfsd_void), | |
548 | .pc_ressize = sizeof(struct nfsd_void), | |
549 | .pc_cachetype = RC_NOCACHE, | |
550 | .pc_xdrressize = ST, | |
551 | }, | |
552 | [NFSPROC_GETATTR] = { | |
553 | .pc_func = (svc_procfunc) nfsd_proc_getattr, | |
554 | .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle, | |
555 | .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, | |
556 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
557 | .pc_argsize = sizeof(struct nfsd_fhandle), | |
558 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
559 | .pc_cachetype = RC_NOCACHE, | |
560 | .pc_xdrressize = ST+AT, | |
561 | }, | |
562 | [NFSPROC_SETATTR] = { | |
563 | .pc_func = (svc_procfunc) nfsd_proc_setattr, | |
564 | .pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs, | |
565 | .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, | |
566 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
567 | .pc_argsize = sizeof(struct nfsd_sattrargs), | |
568 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
569 | .pc_cachetype = RC_REPLBUFF, | |
570 | .pc_xdrressize = ST+AT, | |
571 | }, | |
572 | [NFSPROC_ROOT] = { | |
573 | .pc_decode = (kxdrproc_t) nfssvc_decode_void, | |
574 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
575 | .pc_argsize = sizeof(struct nfsd_void), | |
576 | .pc_ressize = sizeof(struct nfsd_void), | |
577 | .pc_cachetype = RC_NOCACHE, | |
578 | .pc_xdrressize = ST, | |
579 | }, | |
580 | [NFSPROC_LOOKUP] = { | |
581 | .pc_func = (svc_procfunc) nfsd_proc_lookup, | |
582 | .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, | |
583 | .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, | |
584 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
585 | .pc_argsize = sizeof(struct nfsd_diropargs), | |
586 | .pc_ressize = sizeof(struct nfsd_diropres), | |
587 | .pc_cachetype = RC_NOCACHE, | |
588 | .pc_xdrressize = ST+FH+AT, | |
589 | }, | |
590 | [NFSPROC_READLINK] = { | |
591 | .pc_func = (svc_procfunc) nfsd_proc_readlink, | |
592 | .pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs, | |
593 | .pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres, | |
594 | .pc_argsize = sizeof(struct nfsd_readlinkargs), | |
595 | .pc_ressize = sizeof(struct nfsd_readlinkres), | |
596 | .pc_cachetype = RC_NOCACHE, | |
597 | .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4, | |
598 | }, | |
599 | [NFSPROC_READ] = { | |
600 | .pc_func = (svc_procfunc) nfsd_proc_read, | |
601 | .pc_decode = (kxdrproc_t) nfssvc_decode_readargs, | |
602 | .pc_encode = (kxdrproc_t) nfssvc_encode_readres, | |
603 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
604 | .pc_argsize = sizeof(struct nfsd_readargs), | |
605 | .pc_ressize = sizeof(struct nfsd_readres), | |
606 | .pc_cachetype = RC_NOCACHE, | |
607 | .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4, | |
608 | }, | |
609 | [NFSPROC_WRITECACHE] = { | |
610 | .pc_decode = (kxdrproc_t) nfssvc_decode_void, | |
611 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
612 | .pc_argsize = sizeof(struct nfsd_void), | |
613 | .pc_ressize = sizeof(struct nfsd_void), | |
614 | .pc_cachetype = RC_NOCACHE, | |
615 | .pc_xdrressize = ST, | |
616 | }, | |
617 | [NFSPROC_WRITE] = { | |
618 | .pc_func = (svc_procfunc) nfsd_proc_write, | |
619 | .pc_decode = (kxdrproc_t) nfssvc_decode_writeargs, | |
620 | .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, | |
621 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
622 | .pc_argsize = sizeof(struct nfsd_writeargs), | |
623 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
624 | .pc_cachetype = RC_REPLBUFF, | |
625 | .pc_xdrressize = ST+AT, | |
626 | }, | |
627 | [NFSPROC_CREATE] = { | |
628 | .pc_func = (svc_procfunc) nfsd_proc_create, | |
629 | .pc_decode = (kxdrproc_t) nfssvc_decode_createargs, | |
630 | .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, | |
631 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
632 | .pc_argsize = sizeof(struct nfsd_createargs), | |
633 | .pc_ressize = sizeof(struct nfsd_diropres), | |
634 | .pc_cachetype = RC_REPLBUFF, | |
635 | .pc_xdrressize = ST+FH+AT, | |
636 | }, | |
637 | [NFSPROC_REMOVE] = { | |
638 | .pc_func = (svc_procfunc) nfsd_proc_remove, | |
639 | .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, | |
640 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
641 | .pc_argsize = sizeof(struct nfsd_diropargs), | |
642 | .pc_ressize = sizeof(struct nfsd_void), | |
643 | .pc_cachetype = RC_REPLSTAT, | |
644 | .pc_xdrressize = ST, | |
645 | }, | |
646 | [NFSPROC_RENAME] = { | |
647 | .pc_func = (svc_procfunc) nfsd_proc_rename, | |
648 | .pc_decode = (kxdrproc_t) nfssvc_decode_renameargs, | |
649 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
650 | .pc_argsize = sizeof(struct nfsd_renameargs), | |
651 | .pc_ressize = sizeof(struct nfsd_void), | |
652 | .pc_cachetype = RC_REPLSTAT, | |
653 | .pc_xdrressize = ST, | |
654 | }, | |
655 | [NFSPROC_LINK] = { | |
656 | .pc_func = (svc_procfunc) nfsd_proc_link, | |
657 | .pc_decode = (kxdrproc_t) nfssvc_decode_linkargs, | |
658 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
659 | .pc_argsize = sizeof(struct nfsd_linkargs), | |
660 | .pc_ressize = sizeof(struct nfsd_void), | |
661 | .pc_cachetype = RC_REPLSTAT, | |
662 | .pc_xdrressize = ST, | |
663 | }, | |
664 | [NFSPROC_SYMLINK] = { | |
665 | .pc_func = (svc_procfunc) nfsd_proc_symlink, | |
666 | .pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs, | |
667 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
668 | .pc_argsize = sizeof(struct nfsd_symlinkargs), | |
669 | .pc_ressize = sizeof(struct nfsd_void), | |
670 | .pc_cachetype = RC_REPLSTAT, | |
671 | .pc_xdrressize = ST, | |
672 | }, | |
673 | [NFSPROC_MKDIR] = { | |
674 | .pc_func = (svc_procfunc) nfsd_proc_mkdir, | |
675 | .pc_decode = (kxdrproc_t) nfssvc_decode_createargs, | |
676 | .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, | |
677 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
678 | .pc_argsize = sizeof(struct nfsd_createargs), | |
679 | .pc_ressize = sizeof(struct nfsd_diropres), | |
680 | .pc_cachetype = RC_REPLBUFF, | |
681 | .pc_xdrressize = ST+FH+AT, | |
682 | }, | |
683 | [NFSPROC_RMDIR] = { | |
684 | .pc_func = (svc_procfunc) nfsd_proc_rmdir, | |
685 | .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, | |
686 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
687 | .pc_argsize = sizeof(struct nfsd_diropargs), | |
688 | .pc_ressize = sizeof(struct nfsd_void), | |
689 | .pc_cachetype = RC_REPLSTAT, | |
690 | .pc_xdrressize = ST, | |
691 | }, | |
692 | [NFSPROC_READDIR] = { | |
693 | .pc_func = (svc_procfunc) nfsd_proc_readdir, | |
694 | .pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs, | |
695 | .pc_encode = (kxdrproc_t) nfssvc_encode_readdirres, | |
696 | .pc_argsize = sizeof(struct nfsd_readdirargs), | |
697 | .pc_ressize = sizeof(struct nfsd_readdirres), | |
698 | .pc_cachetype = RC_NOCACHE, | |
699 | }, | |
700 | [NFSPROC_STATFS] = { | |
701 | .pc_func = (svc_procfunc) nfsd_proc_statfs, | |
702 | .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle, | |
703 | .pc_encode = (kxdrproc_t) nfssvc_encode_statfsres, | |
704 | .pc_argsize = sizeof(struct nfsd_fhandle), | |
705 | .pc_ressize = sizeof(struct nfsd_statfsres), | |
706 | .pc_cachetype = RC_NOCACHE, | |
707 | .pc_xdrressize = ST+5, | |
708 | }, | |
709 | }; | |
710 | ||
711 | ||
712 | struct svc_version nfsd_version2 = { | |
713 | .vs_vers = 2, | |
714 | .vs_nproc = 18, | |
715 | .vs_proc = nfsd_procedures2, | |
716 | .vs_dispatch = nfsd_dispatch, | |
717 | .vs_xdrsize = NFS2_SVC_XDRSIZE, | |
718 | }; | |
719 | ||
720 | /* | |
721 | * Map errnos to NFS errnos. | |
722 | */ | |
723 | __be32 | |
724 | nfserrno (int errno) | |
725 | { | |
726 | static struct { | |
727 | __be32 nfserr; | |
728 | int syserr; | |
729 | } nfs_errtbl[] = { | |
730 | { nfs_ok, 0 }, | |
731 | { nfserr_perm, -EPERM }, | |
732 | { nfserr_noent, -ENOENT }, | |
733 | { nfserr_io, -EIO }, | |
734 | { nfserr_nxio, -ENXIO }, | |
735 | { nfserr_acces, -EACCES }, | |
736 | { nfserr_exist, -EEXIST }, | |
737 | { nfserr_xdev, -EXDEV }, | |
738 | { nfserr_mlink, -EMLINK }, | |
739 | { nfserr_nodev, -ENODEV }, | |
740 | { nfserr_notdir, -ENOTDIR }, | |
741 | { nfserr_isdir, -EISDIR }, | |
742 | { nfserr_inval, -EINVAL }, | |
743 | { nfserr_fbig, -EFBIG }, | |
744 | { nfserr_nospc, -ENOSPC }, | |
745 | { nfserr_rofs, -EROFS }, | |
746 | { nfserr_mlink, -EMLINK }, | |
747 | { nfserr_nametoolong, -ENAMETOOLONG }, | |
748 | { nfserr_notempty, -ENOTEMPTY }, | |
749 | #ifdef EDQUOT | |
750 | { nfserr_dquot, -EDQUOT }, | |
751 | #endif | |
752 | { nfserr_stale, -ESTALE }, | |
753 | { nfserr_jukebox, -ETIMEDOUT }, | |
754 | { nfserr_jukebox, -ERESTARTSYS }, | |
755 | { nfserr_dropit, -EAGAIN }, | |
756 | { nfserr_dropit, -ENOMEM }, | |
757 | { nfserr_badname, -ESRCH }, | |
758 | { nfserr_io, -ETXTBSY }, | |
759 | { nfserr_notsupp, -EOPNOTSUPP }, | |
760 | { nfserr_toosmall, -ETOOSMALL }, | |
761 | { nfserr_serverfault, -ESERVERFAULT }, | |
762 | }; | |
763 | int i; | |
764 | ||
765 | for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { | |
766 | if (nfs_errtbl[i].syserr == errno) | |
767 | return nfs_errtbl[i].nfserr; | |
768 | } | |
769 | printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno); | |
770 | return nfserr_io; | |
771 | } | |
772 |