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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 | }; |
762 | int i; |
763 | |
764 | for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { |
765 | if (nfs_errtbl[i].syserr == errno) |
766 | return nfs_errtbl[i].nfserr; |
767 | } |
768 | printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno); |
769 | return nfserr_io; |
770 | } |
771 | |
772 |
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