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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Process version 2 NFS requests. |
3 | * | |
4 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> | |
5 | */ | |
6 | ||
1da177e4 | 7 | #include <linux/namei.h> |
1da177e4 | 8 | |
9a74af21 BH |
9 | #include "cache.h" |
10 | #include "xdr.h" | |
0a3adade | 11 | #include "vfs.h" |
1da177e4 LT |
12 | |
13 | typedef struct svc_rqst svc_rqst; | |
14 | typedef struct svc_buf svc_buf; | |
15 | ||
16 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
17 | ||
18 | ||
7111c66e | 19 | static __be32 |
1da177e4 LT |
20 | nfsd_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
21 | { | |
22 | return nfs_ok; | |
23 | } | |
24 | ||
c4d987ba AV |
25 | static __be32 |
26 | nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp) | |
846f2fcd DS |
27 | { |
28 | if (err) return err; | |
54775491 | 29 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
846f2fcd DS |
30 | resp->fh.fh_dentry, |
31 | &resp->stat)); | |
32 | } | |
c4d987ba AV |
33 | static __be32 |
34 | nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp) | |
846f2fcd DS |
35 | { |
36 | if (err) return err; | |
54775491 | 37 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
846f2fcd DS |
38 | resp->fh.fh_dentry, |
39 | &resp->stat)); | |
40 | } | |
1da177e4 LT |
41 | /* |
42 | * Get a file's attributes | |
43 | * N.B. After this call resp->fh needs an fh_put | |
44 | */ | |
7111c66e | 45 | static __be32 |
1da177e4 LT |
46 | nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, |
47 | struct nfsd_attrstat *resp) | |
48 | { | |
c4d987ba | 49 | __be32 nfserr; |
1da177e4 LT |
50 | dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh)); |
51 | ||
52 | fh_copy(&resp->fh, &argp->fh); | |
04716e66 BF |
53 | nfserr = fh_verify(rqstp, &resp->fh, 0, |
54 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
846f2fcd | 55 | return nfsd_return_attrs(nfserr, resp); |
1da177e4 LT |
56 | } |
57 | ||
58 | /* | |
59 | * Set a file's attributes | |
60 | * N.B. After this call resp->fh needs an fh_put | |
61 | */ | |
7111c66e | 62 | static __be32 |
1da177e4 LT |
63 | nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp, |
64 | struct nfsd_attrstat *resp) | |
65 | { | |
c4d987ba | 66 | __be32 nfserr; |
1da177e4 LT |
67 | dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", |
68 | SVCFH_fmt(&argp->fh), | |
69 | argp->attrs.ia_valid, (long) argp->attrs.ia_size); | |
70 | ||
71 | fh_copy(&resp->fh, &argp->fh); | |
846f2fcd DS |
72 | nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0); |
73 | return nfsd_return_attrs(nfserr, resp); | |
1da177e4 LT |
74 | } |
75 | ||
76 | /* | |
77 | * Look up a path name component | |
78 | * Note: the dentry in the resp->fh may be negative if the file | |
79 | * doesn't exist yet. | |
80 | * N.B. After this call resp->fh needs an fh_put | |
81 | */ | |
7111c66e | 82 | static __be32 |
1da177e4 LT |
83 | nfsd_proc_lookup(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, |
84 | struct nfsd_diropres *resp) | |
85 | { | |
c4d987ba | 86 | __be32 nfserr; |
1da177e4 LT |
87 | |
88 | dprintk("nfsd: LOOKUP %s %.*s\n", | |
89 | SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
90 | ||
91 | fh_init(&resp->fh, NFS_FHSIZE); | |
92 | nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, | |
93 | &resp->fh); | |
94 | ||
95 | fh_put(&argp->fh); | |
846f2fcd | 96 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
97 | } |
98 | ||
99 | /* | |
100 | * Read a symlink. | |
101 | */ | |
7111c66e | 102 | static __be32 |
1da177e4 LT |
103 | nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp, |
104 | struct nfsd_readlinkres *resp) | |
105 | { | |
c4d987ba | 106 | __be32 nfserr; |
1da177e4 LT |
107 | |
108 | dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); | |
109 | ||
110 | /* Read the symlink. */ | |
111 | resp->len = NFS_MAXPATHLEN; | |
112 | nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len); | |
113 | ||
114 | fh_put(&argp->fh); | |
115 | return nfserr; | |
116 | } | |
117 | ||
118 | /* | |
119 | * Read a portion of a file. | |
120 | * N.B. After this call resp->fh needs an fh_put | |
121 | */ | |
7111c66e | 122 | static __be32 |
1da177e4 LT |
123 | nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp, |
124 | struct nfsd_readres *resp) | |
125 | { | |
c4d987ba | 126 | __be32 nfserr; |
1da177e4 LT |
127 | |
128 | dprintk("nfsd: READ %s %d bytes at %d\n", | |
129 | SVCFH_fmt(&argp->fh), | |
130 | argp->count, argp->offset); | |
131 | ||
132 | /* Obtain buffer pointer for payload. 19 is 1 word for | |
133 | * status, 17 words for fattr, and 1 word for the byte count. | |
134 | */ | |
135 | ||
7adae489 | 136 | if (NFSSVC_MAXBLKSIZE_V2 < argp->count) { |
ad06e4bd | 137 | char buf[RPC_MAX_ADDRBUFLEN]; |
1da177e4 | 138 | printk(KERN_NOTICE |
ad06e4bd CL |
139 | "oversized read request from %s (%d bytes)\n", |
140 | svc_print_addr(rqstp, buf, sizeof(buf)), | |
1da177e4 | 141 | argp->count); |
7adae489 | 142 | argp->count = NFSSVC_MAXBLKSIZE_V2; |
1da177e4 | 143 | } |
cd123012 | 144 | svc_reserve_auth(rqstp, (19<<2) + argp->count + 4); |
1da177e4 LT |
145 | |
146 | resp->count = argp->count; | |
039a87ca | 147 | nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), |
1da177e4 | 148 | argp->offset, |
3cc03b16 | 149 | rqstp->rq_vec, argp->vlen, |
1da177e4 LT |
150 | &resp->count); |
151 | ||
846f2fcd | 152 | if (nfserr) return nfserr; |
54775491 | 153 | return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
846f2fcd DS |
154 | resp->fh.fh_dentry, |
155 | &resp->stat)); | |
1da177e4 LT |
156 | } |
157 | ||
158 | /* | |
159 | * Write data to a file | |
160 | * N.B. After this call resp->fh needs an fh_put | |
161 | */ | |
7111c66e | 162 | static __be32 |
1da177e4 LT |
163 | nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp, |
164 | struct nfsd_attrstat *resp) | |
165 | { | |
c4d987ba | 166 | __be32 nfserr; |
1da177e4 | 167 | int stable = 1; |
31dec253 | 168 | unsigned long cnt = argp->len; |
1da177e4 LT |
169 | |
170 | dprintk("nfsd: WRITE %s %d bytes at %d\n", | |
171 | SVCFH_fmt(&argp->fh), | |
172 | argp->len, argp->offset); | |
173 | ||
174 | nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, | |
175 | argp->offset, | |
3cc03b16 | 176 | rqstp->rq_vec, argp->vlen, |
31dec253 | 177 | &cnt, |
1da177e4 | 178 | &stable); |
846f2fcd | 179 | return nfsd_return_attrs(nfserr, resp); |
1da177e4 LT |
180 | } |
181 | ||
182 | /* | |
183 | * CREATE processing is complicated. The keyword here is `overloaded.' | |
184 | * The parent directory is kept locked between the check for existence | |
185 | * and the actual create() call in compliance with VFS protocols. | |
186 | * N.B. After this call _both_ argp->fh and resp->fh need an fh_put | |
187 | */ | |
7111c66e | 188 | static __be32 |
1da177e4 LT |
189 | nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp, |
190 | struct nfsd_diropres *resp) | |
191 | { | |
192 | svc_fh *dirfhp = &argp->fh; | |
193 | svc_fh *newfhp = &resp->fh; | |
194 | struct iattr *attr = &argp->attrs; | |
195 | struct inode *inode; | |
196 | struct dentry *dchild; | |
c4d987ba AV |
197 | int type, mode; |
198 | __be32 nfserr; | |
4a55c101 | 199 | int hosterr; |
1da177e4 LT |
200 | dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size); |
201 | ||
202 | dprintk("nfsd: CREATE %s %.*s\n", | |
203 | SVCFH_fmt(dirfhp), argp->len, argp->name); | |
204 | ||
205 | /* First verify the parent file handle */ | |
8837abca | 206 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC); |
1da177e4 LT |
207 | if (nfserr) |
208 | goto done; /* must fh_put dirfhp even on error */ | |
209 | ||
8837abca | 210 | /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */ |
1da177e4 LT |
211 | |
212 | nfserr = nfserr_acces; | |
213 | if (!argp->len) | |
214 | goto done; | |
215 | nfserr = nfserr_exist; | |
216 | if (isdotent(argp->name, argp->len)) | |
217 | goto done; | |
4a55c101 JK |
218 | hosterr = fh_want_write(dirfhp); |
219 | if (hosterr) { | |
220 | nfserr = nfserrno(hosterr); | |
221 | goto done; | |
222 | } | |
223 | ||
7ed94296 | 224 | fh_lock_nested(dirfhp, I_MUTEX_PARENT); |
1da177e4 LT |
225 | dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); |
226 | if (IS_ERR(dchild)) { | |
227 | nfserr = nfserrno(PTR_ERR(dchild)); | |
228 | goto out_unlock; | |
229 | } | |
230 | fh_init(newfhp, NFS_FHSIZE); | |
231 | nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); | |
232 | if (!nfserr && !dchild->d_inode) | |
233 | nfserr = nfserr_noent; | |
234 | dput(dchild); | |
235 | if (nfserr) { | |
236 | if (nfserr != nfserr_noent) | |
237 | goto out_unlock; | |
238 | /* | |
239 | * If the new file handle wasn't verified, we can't tell | |
240 | * whether the file exists or not. Time to bail ... | |
241 | */ | |
242 | nfserr = nfserr_acces; | |
243 | if (!newfhp->fh_dentry) { | |
244 | printk(KERN_WARNING | |
245 | "nfsd_proc_create: file handle not verified\n"); | |
246 | goto out_unlock; | |
247 | } | |
248 | } | |
249 | ||
250 | inode = newfhp->fh_dentry->d_inode; | |
251 | ||
252 | /* Unfudge the mode bits */ | |
253 | if (attr->ia_valid & ATTR_MODE) { | |
254 | type = attr->ia_mode & S_IFMT; | |
255 | mode = attr->ia_mode & ~S_IFMT; | |
256 | if (!type) { | |
257 | /* no type, so if target exists, assume same as that, | |
258 | * else assume a file */ | |
259 | if (inode) { | |
260 | type = inode->i_mode & S_IFMT; | |
261 | switch(type) { | |
262 | case S_IFCHR: | |
263 | case S_IFBLK: | |
264 | /* reserve rdev for later checking */ | |
265 | rdev = inode->i_rdev; | |
266 | attr->ia_valid |= ATTR_SIZE; | |
267 | ||
268 | /* FALLTHROUGH */ | |
269 | case S_IFIFO: | |
270 | /* this is probably a permission check.. | |
271 | * at least IRIX implements perm checking on | |
272 | * echo thing > device-special-file-or-pipe | |
273 | * by doing a CREATE with type==0 | |
274 | */ | |
0ec757df BF |
275 | nfserr = nfsd_permission(rqstp, |
276 | newfhp->fh_export, | |
1da177e4 | 277 | newfhp->fh_dentry, |
8837abca | 278 | NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS); |
1da177e4 LT |
279 | if (nfserr && nfserr != nfserr_rofs) |
280 | goto out_unlock; | |
281 | } | |
282 | } else | |
283 | type = S_IFREG; | |
284 | } | |
285 | } else if (inode) { | |
286 | type = inode->i_mode & S_IFMT; | |
287 | mode = inode->i_mode & ~S_IFMT; | |
288 | } else { | |
289 | type = S_IFREG; | |
290 | mode = 0; /* ??? */ | |
291 | } | |
292 | ||
293 | attr->ia_valid |= ATTR_MODE; | |
294 | attr->ia_mode = mode; | |
295 | ||
296 | /* Special treatment for non-regular files according to the | |
297 | * gospel of sun micro | |
298 | */ | |
299 | if (type != S_IFREG) { | |
1da177e4 LT |
300 | if (type != S_IFBLK && type != S_IFCHR) { |
301 | rdev = 0; | |
302 | } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) { | |
303 | /* If you think you've seen the worst, grok this. */ | |
304 | type = S_IFIFO; | |
305 | } else { | |
306 | /* Okay, char or block special */ | |
1da177e4 LT |
307 | if (!rdev) |
308 | rdev = wanted; | |
309 | } | |
310 | ||
311 | /* we've used the SIZE information, so discard it */ | |
312 | attr->ia_valid &= ~ATTR_SIZE; | |
313 | ||
314 | /* Make sure the type and device matches */ | |
315 | nfserr = nfserr_exist; | |
316 | if (inode && type != (inode->i_mode & S_IFMT)) | |
317 | goto out_unlock; | |
318 | } | |
319 | ||
320 | nfserr = 0; | |
321 | if (!inode) { | |
322 | /* File doesn't exist. Create it and set attrs */ | |
323 | nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len, | |
324 | attr, type, rdev, newfhp); | |
325 | } else if (type == S_IFREG) { | |
326 | dprintk("nfsd: existing %s, valid=%x, size=%ld\n", | |
327 | argp->name, attr->ia_valid, (long) attr->ia_size); | |
328 | /* File already exists. We ignore all attributes except | |
329 | * size, so that creat() behaves exactly like | |
330 | * open(..., O_CREAT|O_TRUNC|O_WRONLY). | |
331 | */ | |
332 | attr->ia_valid &= ATTR_SIZE; | |
333 | if (attr->ia_valid) | |
334 | nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0); | |
335 | } | |
336 | ||
337 | out_unlock: | |
338 | /* We don't really need to unlock, as fh_put does it. */ | |
339 | fh_unlock(dirfhp); | |
4a55c101 | 340 | fh_drop_write(dirfhp); |
1da177e4 LT |
341 | done: |
342 | fh_put(dirfhp); | |
846f2fcd | 343 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
344 | } |
345 | ||
7111c66e | 346 | static __be32 |
1da177e4 LT |
347 | nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, |
348 | void *resp) | |
349 | { | |
c4d987ba | 350 | __be32 nfserr; |
1da177e4 LT |
351 | |
352 | dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), | |
353 | argp->len, argp->name); | |
354 | ||
355 | /* Unlink. -SIFDIR means file must not be a directory */ | |
356 | nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len); | |
357 | fh_put(&argp->fh); | |
358 | return nfserr; | |
359 | } | |
360 | ||
7111c66e | 361 | static __be32 |
1da177e4 LT |
362 | nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp, |
363 | void *resp) | |
364 | { | |
c4d987ba | 365 | __be32 nfserr; |
1da177e4 LT |
366 | |
367 | dprintk("nfsd: RENAME %s %.*s -> \n", | |
368 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname); | |
369 | dprintk("nfsd: -> %s %.*s\n", | |
370 | SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname); | |
371 | ||
372 | nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, | |
373 | &argp->tfh, argp->tname, argp->tlen); | |
374 | fh_put(&argp->ffh); | |
375 | fh_put(&argp->tfh); | |
376 | return nfserr; | |
377 | } | |
378 | ||
7111c66e | 379 | static __be32 |
1da177e4 LT |
380 | nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp, |
381 | void *resp) | |
382 | { | |
c4d987ba | 383 | __be32 nfserr; |
1da177e4 LT |
384 | |
385 | dprintk("nfsd: LINK %s ->\n", | |
386 | SVCFH_fmt(&argp->ffh)); | |
387 | dprintk("nfsd: %s %.*s\n", | |
388 | SVCFH_fmt(&argp->tfh), | |
389 | argp->tlen, | |
390 | argp->tname); | |
391 | ||
392 | nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, | |
393 | &argp->ffh); | |
394 | fh_put(&argp->ffh); | |
395 | fh_put(&argp->tfh); | |
396 | return nfserr; | |
397 | } | |
398 | ||
7111c66e | 399 | static __be32 |
1da177e4 LT |
400 | nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp, |
401 | void *resp) | |
402 | { | |
403 | struct svc_fh newfh; | |
c4d987ba | 404 | __be32 nfserr; |
1da177e4 LT |
405 | |
406 | dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n", | |
407 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, | |
408 | argp->tlen, argp->tname); | |
409 | ||
410 | fh_init(&newfh, NFS_FHSIZE); | |
411 | /* | |
412 | * Create the link, look up new file and set attrs. | |
413 | */ | |
414 | nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, | |
415 | argp->tname, argp->tlen, | |
416 | &newfh, &argp->attrs); | |
417 | ||
418 | ||
419 | fh_put(&argp->ffh); | |
420 | fh_put(&newfh); | |
421 | return nfserr; | |
422 | } | |
423 | ||
424 | /* | |
425 | * Make directory. This operation is not idempotent. | |
426 | * N.B. After this call resp->fh needs an fh_put | |
427 | */ | |
7111c66e | 428 | static __be32 |
1da177e4 LT |
429 | nfsd_proc_mkdir(struct svc_rqst *rqstp, struct nfsd_createargs *argp, |
430 | struct nfsd_diropres *resp) | |
431 | { | |
c4d987ba | 432 | __be32 nfserr; |
1da177e4 LT |
433 | |
434 | dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
435 | ||
436 | if (resp->fh.fh_dentry) { | |
437 | printk(KERN_WARNING | |
438 | "nfsd_proc_mkdir: response already verified??\n"); | |
439 | } | |
440 | ||
441 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
442 | fh_init(&resp->fh, NFS_FHSIZE); | |
443 | nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, | |
444 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
445 | fh_put(&argp->fh); | |
846f2fcd | 446 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
447 | } |
448 | ||
449 | /* | |
450 | * Remove a directory | |
451 | */ | |
7111c66e | 452 | static __be32 |
1da177e4 LT |
453 | nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, |
454 | void *resp) | |
455 | { | |
c4d987ba | 456 | __be32 nfserr; |
1da177e4 LT |
457 | |
458 | dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
459 | ||
460 | nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len); | |
461 | fh_put(&argp->fh); | |
462 | return nfserr; | |
463 | } | |
464 | ||
465 | /* | |
466 | * Read a portion of a directory. | |
467 | */ | |
7111c66e | 468 | static __be32 |
1da177e4 LT |
469 | nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp, |
470 | struct nfsd_readdirres *resp) | |
471 | { | |
c4d987ba AV |
472 | int count; |
473 | __be32 nfserr; | |
1da177e4 LT |
474 | loff_t offset; |
475 | ||
476 | dprintk("nfsd: READDIR %s %d bytes at %d\n", | |
477 | SVCFH_fmt(&argp->fh), | |
478 | argp->count, argp->cookie); | |
479 | ||
480 | /* Shrink to the client read size */ | |
481 | count = (argp->count >> 2) - 2; | |
482 | ||
483 | /* Make sure we've room for the NULL ptr & eof flag */ | |
484 | count -= 2; | |
485 | if (count < 0) | |
486 | count = 0; | |
487 | ||
488 | resp->buffer = argp->buffer; | |
489 | resp->offset = NULL; | |
490 | resp->buflen = count; | |
491 | resp->common.err = nfs_ok; | |
492 | /* Read directory and encode entries on the fly */ | |
493 | offset = argp->cookie; | |
494 | nfserr = nfsd_readdir(rqstp, &argp->fh, &offset, | |
495 | &resp->common, nfssvc_encode_entry); | |
496 | ||
497 | resp->count = resp->buffer - argp->buffer; | |
498 | if (resp->offset) | |
499 | *resp->offset = htonl(offset); | |
500 | ||
501 | fh_put(&argp->fh); | |
502 | return nfserr; | |
503 | } | |
504 | ||
505 | /* | |
506 | * Get file system info | |
507 | */ | |
7111c66e | 508 | static __be32 |
1da177e4 LT |
509 | nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
510 | struct nfsd_statfsres *resp) | |
511 | { | |
c4d987ba | 512 | __be32 nfserr; |
1da177e4 LT |
513 | |
514 | dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); | |
515 | ||
04716e66 BF |
516 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, |
517 | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
1da177e4 LT |
518 | fh_put(&argp->fh); |
519 | return nfserr; | |
520 | } | |
521 | ||
522 | /* | |
523 | * NFSv2 Server procedures. | |
524 | * Only the results of non-idempotent operations are cached. | |
525 | */ | |
1da177e4 LT |
526 | struct nfsd_void { int dummy; }; |
527 | ||
1da177e4 LT |
528 | #define ST 1 /* status */ |
529 | #define FH 8 /* filehandle */ | |
530 | #define AT 18 /* attributes */ | |
531 | ||
532 | static struct svc_procedure nfsd_procedures2[18] = { | |
b9081d90 YZ |
533 | [NFSPROC_NULL] = { |
534 | .pc_func = (svc_procfunc) nfsd_proc_null, | |
535 | .pc_decode = (kxdrproc_t) nfssvc_decode_void, | |
536 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
537 | .pc_argsize = sizeof(struct nfsd_void), | |
538 | .pc_ressize = sizeof(struct nfsd_void), | |
539 | .pc_cachetype = RC_NOCACHE, | |
540 | .pc_xdrressize = ST, | |
541 | }, | |
542 | [NFSPROC_GETATTR] = { | |
543 | .pc_func = (svc_procfunc) nfsd_proc_getattr, | |
544 | .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle, | |
545 | .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, | |
546 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
547 | .pc_argsize = sizeof(struct nfsd_fhandle), | |
548 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
549 | .pc_cachetype = RC_NOCACHE, | |
550 | .pc_xdrressize = ST+AT, | |
551 | }, | |
552 | [NFSPROC_SETATTR] = { | |
553 | .pc_func = (svc_procfunc) nfsd_proc_setattr, | |
554 | .pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs, | |
555 | .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, | |
556 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
557 | .pc_argsize = sizeof(struct nfsd_sattrargs), | |
558 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
559 | .pc_cachetype = RC_REPLBUFF, | |
560 | .pc_xdrressize = ST+AT, | |
561 | }, | |
562 | [NFSPROC_ROOT] = { | |
563 | .pc_decode = (kxdrproc_t) nfssvc_decode_void, | |
564 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
565 | .pc_argsize = sizeof(struct nfsd_void), | |
566 | .pc_ressize = sizeof(struct nfsd_void), | |
567 | .pc_cachetype = RC_NOCACHE, | |
568 | .pc_xdrressize = ST, | |
569 | }, | |
570 | [NFSPROC_LOOKUP] = { | |
571 | .pc_func = (svc_procfunc) nfsd_proc_lookup, | |
572 | .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, | |
573 | .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, | |
574 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
575 | .pc_argsize = sizeof(struct nfsd_diropargs), | |
576 | .pc_ressize = sizeof(struct nfsd_diropres), | |
577 | .pc_cachetype = RC_NOCACHE, | |
578 | .pc_xdrressize = ST+FH+AT, | |
579 | }, | |
580 | [NFSPROC_READLINK] = { | |
581 | .pc_func = (svc_procfunc) nfsd_proc_readlink, | |
582 | .pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs, | |
583 | .pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres, | |
584 | .pc_argsize = sizeof(struct nfsd_readlinkargs), | |
585 | .pc_ressize = sizeof(struct nfsd_readlinkres), | |
586 | .pc_cachetype = RC_NOCACHE, | |
587 | .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4, | |
588 | }, | |
589 | [NFSPROC_READ] = { | |
590 | .pc_func = (svc_procfunc) nfsd_proc_read, | |
591 | .pc_decode = (kxdrproc_t) nfssvc_decode_readargs, | |
592 | .pc_encode = (kxdrproc_t) nfssvc_encode_readres, | |
593 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
594 | .pc_argsize = sizeof(struct nfsd_readargs), | |
595 | .pc_ressize = sizeof(struct nfsd_readres), | |
596 | .pc_cachetype = RC_NOCACHE, | |
597 | .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4, | |
598 | }, | |
599 | [NFSPROC_WRITECACHE] = { | |
600 | .pc_decode = (kxdrproc_t) nfssvc_decode_void, | |
601 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
602 | .pc_argsize = sizeof(struct nfsd_void), | |
603 | .pc_ressize = sizeof(struct nfsd_void), | |
604 | .pc_cachetype = RC_NOCACHE, | |
605 | .pc_xdrressize = ST, | |
606 | }, | |
607 | [NFSPROC_WRITE] = { | |
608 | .pc_func = (svc_procfunc) nfsd_proc_write, | |
609 | .pc_decode = (kxdrproc_t) nfssvc_decode_writeargs, | |
610 | .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, | |
611 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
612 | .pc_argsize = sizeof(struct nfsd_writeargs), | |
613 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
614 | .pc_cachetype = RC_REPLBUFF, | |
615 | .pc_xdrressize = ST+AT, | |
616 | }, | |
617 | [NFSPROC_CREATE] = { | |
618 | .pc_func = (svc_procfunc) nfsd_proc_create, | |
619 | .pc_decode = (kxdrproc_t) nfssvc_decode_createargs, | |
620 | .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, | |
621 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
622 | .pc_argsize = sizeof(struct nfsd_createargs), | |
623 | .pc_ressize = sizeof(struct nfsd_diropres), | |
624 | .pc_cachetype = RC_REPLBUFF, | |
625 | .pc_xdrressize = ST+FH+AT, | |
626 | }, | |
627 | [NFSPROC_REMOVE] = { | |
628 | .pc_func = (svc_procfunc) nfsd_proc_remove, | |
629 | .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, | |
630 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
631 | .pc_argsize = sizeof(struct nfsd_diropargs), | |
632 | .pc_ressize = sizeof(struct nfsd_void), | |
633 | .pc_cachetype = RC_REPLSTAT, | |
634 | .pc_xdrressize = ST, | |
635 | }, | |
636 | [NFSPROC_RENAME] = { | |
637 | .pc_func = (svc_procfunc) nfsd_proc_rename, | |
638 | .pc_decode = (kxdrproc_t) nfssvc_decode_renameargs, | |
639 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
640 | .pc_argsize = sizeof(struct nfsd_renameargs), | |
641 | .pc_ressize = sizeof(struct nfsd_void), | |
642 | .pc_cachetype = RC_REPLSTAT, | |
643 | .pc_xdrressize = ST, | |
644 | }, | |
645 | [NFSPROC_LINK] = { | |
646 | .pc_func = (svc_procfunc) nfsd_proc_link, | |
647 | .pc_decode = (kxdrproc_t) nfssvc_decode_linkargs, | |
648 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
649 | .pc_argsize = sizeof(struct nfsd_linkargs), | |
650 | .pc_ressize = sizeof(struct nfsd_void), | |
651 | .pc_cachetype = RC_REPLSTAT, | |
652 | .pc_xdrressize = ST, | |
653 | }, | |
654 | [NFSPROC_SYMLINK] = { | |
655 | .pc_func = (svc_procfunc) nfsd_proc_symlink, | |
656 | .pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs, | |
657 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
658 | .pc_argsize = sizeof(struct nfsd_symlinkargs), | |
659 | .pc_ressize = sizeof(struct nfsd_void), | |
660 | .pc_cachetype = RC_REPLSTAT, | |
661 | .pc_xdrressize = ST, | |
662 | }, | |
663 | [NFSPROC_MKDIR] = { | |
664 | .pc_func = (svc_procfunc) nfsd_proc_mkdir, | |
665 | .pc_decode = (kxdrproc_t) nfssvc_decode_createargs, | |
666 | .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, | |
667 | .pc_release = (kxdrproc_t) nfssvc_release_fhandle, | |
668 | .pc_argsize = sizeof(struct nfsd_createargs), | |
669 | .pc_ressize = sizeof(struct nfsd_diropres), | |
670 | .pc_cachetype = RC_REPLBUFF, | |
671 | .pc_xdrressize = ST+FH+AT, | |
672 | }, | |
673 | [NFSPROC_RMDIR] = { | |
674 | .pc_func = (svc_procfunc) nfsd_proc_rmdir, | |
675 | .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, | |
676 | .pc_encode = (kxdrproc_t) nfssvc_encode_void, | |
677 | .pc_argsize = sizeof(struct nfsd_diropargs), | |
678 | .pc_ressize = sizeof(struct nfsd_void), | |
679 | .pc_cachetype = RC_REPLSTAT, | |
680 | .pc_xdrressize = ST, | |
681 | }, | |
682 | [NFSPROC_READDIR] = { | |
683 | .pc_func = (svc_procfunc) nfsd_proc_readdir, | |
684 | .pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs, | |
685 | .pc_encode = (kxdrproc_t) nfssvc_encode_readdirres, | |
686 | .pc_argsize = sizeof(struct nfsd_readdirargs), | |
687 | .pc_ressize = sizeof(struct nfsd_readdirres), | |
688 | .pc_cachetype = RC_NOCACHE, | |
689 | }, | |
690 | [NFSPROC_STATFS] = { | |
691 | .pc_func = (svc_procfunc) nfsd_proc_statfs, | |
692 | .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle, | |
693 | .pc_encode = (kxdrproc_t) nfssvc_encode_statfsres, | |
694 | .pc_argsize = sizeof(struct nfsd_fhandle), | |
695 | .pc_ressize = sizeof(struct nfsd_statfsres), | |
696 | .pc_cachetype = RC_NOCACHE, | |
697 | .pc_xdrressize = ST+5, | |
698 | }, | |
1da177e4 LT |
699 | }; |
700 | ||
701 | ||
702 | struct svc_version nfsd_version2 = { | |
703 | .vs_vers = 2, | |
704 | .vs_nproc = 18, | |
705 | .vs_proc = nfsd_procedures2, | |
706 | .vs_dispatch = nfsd_dispatch, | |
707 | .vs_xdrsize = NFS2_SVC_XDRSIZE, | |
708 | }; | |
709 | ||
710 | /* | |
711 | * Map errnos to NFS errnos. | |
712 | */ | |
63f10311 | 713 | __be32 |
1da177e4 LT |
714 | nfserrno (int errno) |
715 | { | |
716 | static struct { | |
63f10311 | 717 | __be32 nfserr; |
1da177e4 LT |
718 | int syserr; |
719 | } nfs_errtbl[] = { | |
720 | { nfs_ok, 0 }, | |
721 | { nfserr_perm, -EPERM }, | |
722 | { nfserr_noent, -ENOENT }, | |
723 | { nfserr_io, -EIO }, | |
724 | { nfserr_nxio, -ENXIO }, | |
725 | { nfserr_acces, -EACCES }, | |
726 | { nfserr_exist, -EEXIST }, | |
727 | { nfserr_xdev, -EXDEV }, | |
728 | { nfserr_mlink, -EMLINK }, | |
729 | { nfserr_nodev, -ENODEV }, | |
730 | { nfserr_notdir, -ENOTDIR }, | |
731 | { nfserr_isdir, -EISDIR }, | |
732 | { nfserr_inval, -EINVAL }, | |
733 | { nfserr_fbig, -EFBIG }, | |
734 | { nfserr_nospc, -ENOSPC }, | |
735 | { nfserr_rofs, -EROFS }, | |
736 | { nfserr_mlink, -EMLINK }, | |
737 | { nfserr_nametoolong, -ENAMETOOLONG }, | |
738 | { nfserr_notempty, -ENOTEMPTY }, | |
739 | #ifdef EDQUOT | |
740 | { nfserr_dquot, -EDQUOT }, | |
741 | #endif | |
742 | { nfserr_stale, -ESTALE }, | |
743 | { nfserr_jukebox, -ETIMEDOUT }, | |
599eb304 | 744 | { nfserr_jukebox, -ERESTARTSYS }, |
062304a8 BF |
745 | { nfserr_jukebox, -EAGAIN }, |
746 | { nfserr_jukebox, -EWOULDBLOCK }, | |
3beb6cd1 | 747 | { nfserr_jukebox, -ENOMEM }, |
1da177e4 | 748 | { nfserr_io, -ETXTBSY }, |
a838cc49 | 749 | { nfserr_notsupp, -EOPNOTSUPP }, |
b7aeda40 | 750 | { nfserr_toosmall, -ETOOSMALL }, |
f39bde24 | 751 | { nfserr_serverfault, -ESERVERFAULT }, |
1da177e4 LT |
752 | }; |
753 | int i; | |
754 | ||
63f10311 | 755 | for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { |
1da177e4 LT |
756 | if (nfs_errtbl[i].syserr == errno) |
757 | return nfs_errtbl[i].nfserr; | |
758 | } | |
759 | printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno); | |
760 | return nfserr_io; | |
761 | } | |
762 |