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 |
a6beb732 | 20 | nfsd_proc_null(struct svc_rqst *rqstp) |
1da177e4 LT |
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; | |
3dadecce | 29 | return fh_getattr(&resp->fh, &resp->stat); |
846f2fcd | 30 | } |
c4d987ba AV |
31 | static __be32 |
32 | nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp) | |
846f2fcd DS |
33 | { |
34 | if (err) return err; | |
3dadecce | 35 | return fh_getattr(&resp->fh, &resp->stat); |
846f2fcd | 36 | } |
1da177e4 LT |
37 | /* |
38 | * Get a file's attributes | |
39 | * N.B. After this call resp->fh needs an fh_put | |
40 | */ | |
7111c66e | 41 | static __be32 |
a6beb732 | 42 | nfsd_proc_getattr(struct svc_rqst *rqstp) |
1da177e4 | 43 | { |
a6beb732 CH |
44 | struct nfsd_fhandle *argp = rqstp->rq_argp; |
45 | struct nfsd_attrstat *resp = rqstp->rq_resp; | |
c4d987ba | 46 | __be32 nfserr; |
1da177e4 LT |
47 | dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh)); |
48 | ||
49 | fh_copy(&resp->fh, &argp->fh); | |
04716e66 BF |
50 | nfserr = fh_verify(rqstp, &resp->fh, 0, |
51 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
846f2fcd | 52 | return nfsd_return_attrs(nfserr, resp); |
1da177e4 LT |
53 | } |
54 | ||
55 | /* | |
56 | * Set a file's attributes | |
57 | * N.B. After this call resp->fh needs an fh_put | |
58 | */ | |
7111c66e | 59 | static __be32 |
a6beb732 | 60 | nfsd_proc_setattr(struct svc_rqst *rqstp) |
1da177e4 | 61 | { |
a6beb732 CH |
62 | struct nfsd_sattrargs *argp = rqstp->rq_argp; |
63 | struct nfsd_attrstat *resp = rqstp->rq_resp; | |
cc265089 AG |
64 | struct iattr *iap = &argp->attrs; |
65 | struct svc_fh *fhp; | |
c4d987ba | 66 | __be32 nfserr; |
cc265089 | 67 | |
1da177e4 LT |
68 | dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", |
69 | SVCFH_fmt(&argp->fh), | |
70 | argp->attrs.ia_valid, (long) argp->attrs.ia_size); | |
71 | ||
cc265089 AG |
72 | fhp = fh_copy(&resp->fh, &argp->fh); |
73 | ||
74 | /* | |
75 | * NFSv2 does not differentiate between "set-[ac]time-to-now" | |
76 | * which only requires access, and "set-[ac]time-to-X" which | |
77 | * requires ownership. | |
78 | * So if it looks like it might be "set both to the same time which | |
31051c85 | 79 | * is close to now", and if setattr_prepare fails, then we |
cc265089 AG |
80 | * convert to "set to now" instead of "set to explicit time" |
81 | * | |
31051c85 | 82 | * We only call setattr_prepare as the last test as technically |
cc265089 AG |
83 | * it is not an interface that we should be using. |
84 | */ | |
85 | #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET) | |
86 | #define MAX_TOUCH_TIME_ERROR (30*60) | |
87 | if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET && | |
88 | iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) { | |
89 | /* | |
90 | * Looks probable. | |
91 | * | |
92 | * Now just make sure time is in the right ballpark. | |
93 | * Solaris, at least, doesn't seem to care what the time | |
94 | * request is. We require it be within 30 minutes of now. | |
95 | */ | |
96 | time_t delta = iap->ia_atime.tv_sec - get_seconds(); | |
cc265089 AG |
97 | |
98 | nfserr = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP); | |
99 | if (nfserr) | |
100 | goto done; | |
cc265089 AG |
101 | |
102 | if (delta < 0) | |
103 | delta = -delta; | |
104 | if (delta < MAX_TOUCH_TIME_ERROR && | |
31051c85 | 105 | setattr_prepare(fhp->fh_dentry, iap) != 0) { |
cc265089 AG |
106 | /* |
107 | * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME. | |
108 | * This will cause notify_change to set these times | |
109 | * to "now" | |
110 | */ | |
111 | iap->ia_valid &= ~BOTH_TIME_SET; | |
112 | } | |
113 | } | |
114 | ||
115 | nfserr = nfsd_setattr(rqstp, fhp, iap, 0, (time_t)0); | |
116 | done: | |
846f2fcd | 117 | return nfsd_return_attrs(nfserr, resp); |
1da177e4 LT |
118 | } |
119 | ||
120 | /* | |
121 | * Look up a path name component | |
122 | * Note: the dentry in the resp->fh may be negative if the file | |
123 | * doesn't exist yet. | |
124 | * N.B. After this call resp->fh needs an fh_put | |
125 | */ | |
7111c66e | 126 | static __be32 |
a6beb732 | 127 | nfsd_proc_lookup(struct svc_rqst *rqstp) |
1da177e4 | 128 | { |
a6beb732 CH |
129 | struct nfsd_diropargs *argp = rqstp->rq_argp; |
130 | struct nfsd_diropres *resp = rqstp->rq_resp; | |
c4d987ba | 131 | __be32 nfserr; |
1da177e4 LT |
132 | |
133 | dprintk("nfsd: LOOKUP %s %.*s\n", | |
134 | SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
135 | ||
136 | fh_init(&resp->fh, NFS_FHSIZE); | |
137 | nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, | |
138 | &resp->fh); | |
139 | ||
140 | fh_put(&argp->fh); | |
846f2fcd | 141 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
142 | } |
143 | ||
144 | /* | |
145 | * Read a symlink. | |
146 | */ | |
7111c66e | 147 | static __be32 |
a6beb732 | 148 | nfsd_proc_readlink(struct svc_rqst *rqstp) |
1da177e4 | 149 | { |
a6beb732 CH |
150 | struct nfsd_readlinkargs *argp = rqstp->rq_argp; |
151 | struct nfsd_readlinkres *resp = rqstp->rq_resp; | |
c4d987ba | 152 | __be32 nfserr; |
1da177e4 LT |
153 | |
154 | dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); | |
155 | ||
156 | /* Read the symlink. */ | |
157 | resp->len = NFS_MAXPATHLEN; | |
158 | nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len); | |
159 | ||
160 | fh_put(&argp->fh); | |
161 | return nfserr; | |
162 | } | |
163 | ||
164 | /* | |
165 | * Read a portion of a file. | |
166 | * N.B. After this call resp->fh needs an fh_put | |
167 | */ | |
7111c66e | 168 | static __be32 |
a6beb732 | 169 | nfsd_proc_read(struct svc_rqst *rqstp) |
1da177e4 | 170 | { |
a6beb732 CH |
171 | struct nfsd_readargs *argp = rqstp->rq_argp; |
172 | struct nfsd_readres *resp = rqstp->rq_resp; | |
c4d987ba | 173 | __be32 nfserr; |
1da177e4 LT |
174 | |
175 | dprintk("nfsd: READ %s %d bytes at %d\n", | |
176 | SVCFH_fmt(&argp->fh), | |
177 | argp->count, argp->offset); | |
178 | ||
179 | /* Obtain buffer pointer for payload. 19 is 1 word for | |
180 | * status, 17 words for fattr, and 1 word for the byte count. | |
181 | */ | |
182 | ||
7adae489 | 183 | if (NFSSVC_MAXBLKSIZE_V2 < argp->count) { |
ad06e4bd | 184 | char buf[RPC_MAX_ADDRBUFLEN]; |
1da177e4 | 185 | printk(KERN_NOTICE |
ad06e4bd CL |
186 | "oversized read request from %s (%d bytes)\n", |
187 | svc_print_addr(rqstp, buf, sizeof(buf)), | |
1da177e4 | 188 | argp->count); |
7adae489 | 189 | argp->count = NFSSVC_MAXBLKSIZE_V2; |
1da177e4 | 190 | } |
cd123012 | 191 | svc_reserve_auth(rqstp, (19<<2) + argp->count + 4); |
1da177e4 LT |
192 | |
193 | resp->count = argp->count; | |
039a87ca | 194 | nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), |
1da177e4 | 195 | argp->offset, |
3cc03b16 | 196 | rqstp->rq_vec, argp->vlen, |
1da177e4 LT |
197 | &resp->count); |
198 | ||
846f2fcd | 199 | if (nfserr) return nfserr; |
3dadecce | 200 | return fh_getattr(&resp->fh, &resp->stat); |
1da177e4 LT |
201 | } |
202 | ||
203 | /* | |
204 | * Write data to a file | |
205 | * N.B. After this call resp->fh needs an fh_put | |
206 | */ | |
7111c66e | 207 | static __be32 |
a6beb732 | 208 | nfsd_proc_write(struct svc_rqst *rqstp) |
1da177e4 | 209 | { |
a6beb732 CH |
210 | struct nfsd_writeargs *argp = rqstp->rq_argp; |
211 | struct nfsd_attrstat *resp = rqstp->rq_resp; | |
c4d987ba | 212 | __be32 nfserr; |
31dec253 | 213 | unsigned long cnt = argp->len; |
1da177e4 LT |
214 | |
215 | dprintk("nfsd: WRITE %s %d bytes at %d\n", | |
216 | SVCFH_fmt(&argp->fh), | |
217 | argp->len, argp->offset); | |
218 | ||
52e380e0 KM |
219 | nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), argp->offset, |
220 | rqstp->rq_vec, argp->vlen, &cnt, NFS_DATA_SYNC); | |
846f2fcd | 221 | return nfsd_return_attrs(nfserr, resp); |
1da177e4 LT |
222 | } |
223 | ||
224 | /* | |
225 | * CREATE processing is complicated. The keyword here is `overloaded.' | |
226 | * The parent directory is kept locked between the check for existence | |
227 | * and the actual create() call in compliance with VFS protocols. | |
228 | * N.B. After this call _both_ argp->fh and resp->fh need an fh_put | |
229 | */ | |
7111c66e | 230 | static __be32 |
a6beb732 | 231 | nfsd_proc_create(struct svc_rqst *rqstp) |
1da177e4 | 232 | { |
a6beb732 CH |
233 | struct nfsd_createargs *argp = rqstp->rq_argp; |
234 | struct nfsd_diropres *resp = rqstp->rq_resp; | |
1da177e4 LT |
235 | svc_fh *dirfhp = &argp->fh; |
236 | svc_fh *newfhp = &resp->fh; | |
237 | struct iattr *attr = &argp->attrs; | |
238 | struct inode *inode; | |
239 | struct dentry *dchild; | |
c4d987ba AV |
240 | int type, mode; |
241 | __be32 nfserr; | |
4a55c101 | 242 | int hosterr; |
1da177e4 LT |
243 | dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size); |
244 | ||
245 | dprintk("nfsd: CREATE %s %.*s\n", | |
246 | SVCFH_fmt(dirfhp), argp->len, argp->name); | |
247 | ||
248 | /* First verify the parent file handle */ | |
8837abca | 249 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC); |
1da177e4 LT |
250 | if (nfserr) |
251 | goto done; /* must fh_put dirfhp even on error */ | |
252 | ||
8837abca | 253 | /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */ |
1da177e4 | 254 | |
1da177e4 LT |
255 | nfserr = nfserr_exist; |
256 | if (isdotent(argp->name, argp->len)) | |
257 | goto done; | |
4a55c101 JK |
258 | hosterr = fh_want_write(dirfhp); |
259 | if (hosterr) { | |
260 | nfserr = nfserrno(hosterr); | |
261 | goto done; | |
262 | } | |
263 | ||
7ed94296 | 264 | fh_lock_nested(dirfhp, I_MUTEX_PARENT); |
1da177e4 LT |
265 | dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); |
266 | if (IS_ERR(dchild)) { | |
267 | nfserr = nfserrno(PTR_ERR(dchild)); | |
268 | goto out_unlock; | |
269 | } | |
270 | fh_init(newfhp, NFS_FHSIZE); | |
271 | nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); | |
2b0143b5 | 272 | if (!nfserr && d_really_is_negative(dchild)) |
1da177e4 LT |
273 | nfserr = nfserr_noent; |
274 | dput(dchild); | |
275 | if (nfserr) { | |
276 | if (nfserr != nfserr_noent) | |
277 | goto out_unlock; | |
278 | /* | |
279 | * If the new file handle wasn't verified, we can't tell | |
280 | * whether the file exists or not. Time to bail ... | |
281 | */ | |
282 | nfserr = nfserr_acces; | |
283 | if (!newfhp->fh_dentry) { | |
284 | printk(KERN_WARNING | |
285 | "nfsd_proc_create: file handle not verified\n"); | |
286 | goto out_unlock; | |
287 | } | |
288 | } | |
289 | ||
2b0143b5 | 290 | inode = d_inode(newfhp->fh_dentry); |
1da177e4 LT |
291 | |
292 | /* Unfudge the mode bits */ | |
293 | if (attr->ia_valid & ATTR_MODE) { | |
294 | type = attr->ia_mode & S_IFMT; | |
295 | mode = attr->ia_mode & ~S_IFMT; | |
296 | if (!type) { | |
297 | /* no type, so if target exists, assume same as that, | |
298 | * else assume a file */ | |
299 | if (inode) { | |
300 | type = inode->i_mode & S_IFMT; | |
301 | switch(type) { | |
302 | case S_IFCHR: | |
303 | case S_IFBLK: | |
304 | /* reserve rdev for later checking */ | |
305 | rdev = inode->i_rdev; | |
306 | attr->ia_valid |= ATTR_SIZE; | |
307 | ||
308 | /* FALLTHROUGH */ | |
309 | case S_IFIFO: | |
310 | /* this is probably a permission check.. | |
311 | * at least IRIX implements perm checking on | |
312 | * echo thing > device-special-file-or-pipe | |
313 | * by doing a CREATE with type==0 | |
314 | */ | |
0ec757df BF |
315 | nfserr = nfsd_permission(rqstp, |
316 | newfhp->fh_export, | |
1da177e4 | 317 | newfhp->fh_dentry, |
8837abca | 318 | NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS); |
1da177e4 LT |
319 | if (nfserr && nfserr != nfserr_rofs) |
320 | goto out_unlock; | |
321 | } | |
322 | } else | |
323 | type = S_IFREG; | |
324 | } | |
325 | } else if (inode) { | |
326 | type = inode->i_mode & S_IFMT; | |
327 | mode = inode->i_mode & ~S_IFMT; | |
328 | } else { | |
329 | type = S_IFREG; | |
330 | mode = 0; /* ??? */ | |
331 | } | |
332 | ||
333 | attr->ia_valid |= ATTR_MODE; | |
334 | attr->ia_mode = mode; | |
335 | ||
336 | /* Special treatment for non-regular files according to the | |
337 | * gospel of sun micro | |
338 | */ | |
339 | if (type != S_IFREG) { | |
1da177e4 LT |
340 | if (type != S_IFBLK && type != S_IFCHR) { |
341 | rdev = 0; | |
342 | } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) { | |
343 | /* If you think you've seen the worst, grok this. */ | |
344 | type = S_IFIFO; | |
345 | } else { | |
346 | /* Okay, char or block special */ | |
1da177e4 LT |
347 | if (!rdev) |
348 | rdev = wanted; | |
349 | } | |
350 | ||
351 | /* we've used the SIZE information, so discard it */ | |
352 | attr->ia_valid &= ~ATTR_SIZE; | |
353 | ||
354 | /* Make sure the type and device matches */ | |
355 | nfserr = nfserr_exist; | |
356 | if (inode && type != (inode->i_mode & S_IFMT)) | |
357 | goto out_unlock; | |
358 | } | |
359 | ||
360 | nfserr = 0; | |
361 | if (!inode) { | |
362 | /* File doesn't exist. Create it and set attrs */ | |
b44061d0 BF |
363 | nfserr = nfsd_create_locked(rqstp, dirfhp, argp->name, |
364 | argp->len, attr, type, rdev, newfhp); | |
1da177e4 LT |
365 | } else if (type == S_IFREG) { |
366 | dprintk("nfsd: existing %s, valid=%x, size=%ld\n", | |
367 | argp->name, attr->ia_valid, (long) attr->ia_size); | |
368 | /* File already exists. We ignore all attributes except | |
369 | * size, so that creat() behaves exactly like | |
370 | * open(..., O_CREAT|O_TRUNC|O_WRONLY). | |
371 | */ | |
372 | attr->ia_valid &= ATTR_SIZE; | |
373 | if (attr->ia_valid) | |
374 | nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0); | |
375 | } | |
376 | ||
377 | out_unlock: | |
378 | /* We don't really need to unlock, as fh_put does it. */ | |
379 | fh_unlock(dirfhp); | |
4a55c101 | 380 | fh_drop_write(dirfhp); |
1da177e4 LT |
381 | done: |
382 | fh_put(dirfhp); | |
846f2fcd | 383 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
384 | } |
385 | ||
7111c66e | 386 | static __be32 |
a6beb732 | 387 | nfsd_proc_remove(struct svc_rqst *rqstp) |
1da177e4 | 388 | { |
a6beb732 | 389 | struct nfsd_diropargs *argp = rqstp->rq_argp; |
c4d987ba | 390 | __be32 nfserr; |
1da177e4 LT |
391 | |
392 | dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), | |
393 | argp->len, argp->name); | |
394 | ||
395 | /* Unlink. -SIFDIR means file must not be a directory */ | |
396 | nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len); | |
397 | fh_put(&argp->fh); | |
398 | return nfserr; | |
399 | } | |
400 | ||
7111c66e | 401 | static __be32 |
a6beb732 | 402 | nfsd_proc_rename(struct svc_rqst *rqstp) |
1da177e4 | 403 | { |
a6beb732 | 404 | struct nfsd_renameargs *argp = rqstp->rq_argp; |
c4d987ba | 405 | __be32 nfserr; |
1da177e4 LT |
406 | |
407 | dprintk("nfsd: RENAME %s %.*s -> \n", | |
408 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname); | |
409 | dprintk("nfsd: -> %s %.*s\n", | |
410 | SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname); | |
411 | ||
412 | nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, | |
413 | &argp->tfh, argp->tname, argp->tlen); | |
414 | fh_put(&argp->ffh); | |
415 | fh_put(&argp->tfh); | |
416 | return nfserr; | |
417 | } | |
418 | ||
7111c66e | 419 | static __be32 |
a6beb732 | 420 | nfsd_proc_link(struct svc_rqst *rqstp) |
1da177e4 | 421 | { |
a6beb732 | 422 | struct nfsd_linkargs *argp = rqstp->rq_argp; |
c4d987ba | 423 | __be32 nfserr; |
1da177e4 LT |
424 | |
425 | dprintk("nfsd: LINK %s ->\n", | |
426 | SVCFH_fmt(&argp->ffh)); | |
427 | dprintk("nfsd: %s %.*s\n", | |
428 | SVCFH_fmt(&argp->tfh), | |
429 | argp->tlen, | |
430 | argp->tname); | |
431 | ||
432 | nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, | |
433 | &argp->ffh); | |
434 | fh_put(&argp->ffh); | |
435 | fh_put(&argp->tfh); | |
436 | return nfserr; | |
437 | } | |
438 | ||
7111c66e | 439 | static __be32 |
a6beb732 | 440 | nfsd_proc_symlink(struct svc_rqst *rqstp) |
1da177e4 | 441 | { |
a6beb732 | 442 | struct nfsd_symlinkargs *argp = rqstp->rq_argp; |
1da177e4 | 443 | struct svc_fh newfh; |
c4d987ba | 444 | __be32 nfserr; |
1da177e4 LT |
445 | |
446 | dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n", | |
447 | SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, | |
448 | argp->tlen, argp->tname); | |
449 | ||
450 | fh_init(&newfh, NFS_FHSIZE); | |
451 | /* | |
0aeae33f BF |
452 | * Crazy hack: the request fits in a page, and already-decoded |
453 | * attributes follow argp->tname, so it's safe to just write a | |
454 | * null to ensure it's null-terminated: | |
1da177e4 | 455 | */ |
0aeae33f | 456 | argp->tname[argp->tlen] = '\0'; |
1da177e4 | 457 | nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, |
1e444f5b | 458 | argp->tname, &newfh); |
1da177e4 LT |
459 | |
460 | fh_put(&argp->ffh); | |
461 | fh_put(&newfh); | |
462 | return nfserr; | |
463 | } | |
464 | ||
465 | /* | |
466 | * Make directory. This operation is not idempotent. | |
467 | * N.B. After this call resp->fh needs an fh_put | |
468 | */ | |
7111c66e | 469 | static __be32 |
a6beb732 | 470 | nfsd_proc_mkdir(struct svc_rqst *rqstp) |
1da177e4 | 471 | { |
a6beb732 CH |
472 | struct nfsd_createargs *argp = rqstp->rq_argp; |
473 | struct nfsd_diropres *resp = rqstp->rq_resp; | |
c4d987ba | 474 | __be32 nfserr; |
1da177e4 LT |
475 | |
476 | dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
477 | ||
478 | if (resp->fh.fh_dentry) { | |
479 | printk(KERN_WARNING | |
480 | "nfsd_proc_mkdir: response already verified??\n"); | |
481 | } | |
482 | ||
483 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
484 | fh_init(&resp->fh, NFS_FHSIZE); | |
485 | nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, | |
486 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
487 | fh_put(&argp->fh); | |
846f2fcd | 488 | return nfsd_return_dirop(nfserr, resp); |
1da177e4 LT |
489 | } |
490 | ||
491 | /* | |
492 | * Remove a directory | |
493 | */ | |
7111c66e | 494 | static __be32 |
a6beb732 | 495 | nfsd_proc_rmdir(struct svc_rqst *rqstp) |
1da177e4 | 496 | { |
a6beb732 | 497 | struct nfsd_diropargs *argp = rqstp->rq_argp; |
c4d987ba | 498 | __be32 nfserr; |
1da177e4 LT |
499 | |
500 | dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); | |
501 | ||
502 | nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len); | |
503 | fh_put(&argp->fh); | |
504 | return nfserr; | |
505 | } | |
506 | ||
507 | /* | |
508 | * Read a portion of a directory. | |
509 | */ | |
7111c66e | 510 | static __be32 |
a6beb732 | 511 | nfsd_proc_readdir(struct svc_rqst *rqstp) |
1da177e4 | 512 | { |
a6beb732 CH |
513 | struct nfsd_readdirargs *argp = rqstp->rq_argp; |
514 | struct nfsd_readdirres *resp = rqstp->rq_resp; | |
c4d987ba AV |
515 | int count; |
516 | __be32 nfserr; | |
1da177e4 LT |
517 | loff_t offset; |
518 | ||
519 | dprintk("nfsd: READDIR %s %d bytes at %d\n", | |
520 | SVCFH_fmt(&argp->fh), | |
521 | argp->count, argp->cookie); | |
522 | ||
523 | /* Shrink to the client read size */ | |
524 | count = (argp->count >> 2) - 2; | |
525 | ||
526 | /* Make sure we've room for the NULL ptr & eof flag */ | |
527 | count -= 2; | |
528 | if (count < 0) | |
529 | count = 0; | |
530 | ||
531 | resp->buffer = argp->buffer; | |
532 | resp->offset = NULL; | |
533 | resp->buflen = count; | |
534 | resp->common.err = nfs_ok; | |
535 | /* Read directory and encode entries on the fly */ | |
536 | offset = argp->cookie; | |
537 | nfserr = nfsd_readdir(rqstp, &argp->fh, &offset, | |
538 | &resp->common, nfssvc_encode_entry); | |
539 | ||
540 | resp->count = resp->buffer - argp->buffer; | |
541 | if (resp->offset) | |
542 | *resp->offset = htonl(offset); | |
543 | ||
544 | fh_put(&argp->fh); | |
545 | return nfserr; | |
546 | } | |
547 | ||
548 | /* | |
549 | * Get file system info | |
550 | */ | |
7111c66e | 551 | static __be32 |
a6beb732 | 552 | nfsd_proc_statfs(struct svc_rqst *rqstp) |
1da177e4 | 553 | { |
a6beb732 CH |
554 | struct nfsd_fhandle *argp = rqstp->rq_argp; |
555 | struct nfsd_statfsres *resp = rqstp->rq_resp; | |
c4d987ba | 556 | __be32 nfserr; |
1da177e4 LT |
557 | |
558 | dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); | |
559 | ||
04716e66 BF |
560 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, |
561 | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
1da177e4 LT |
562 | fh_put(&argp->fh); |
563 | return nfserr; | |
564 | } | |
565 | ||
566 | /* | |
567 | * NFSv2 Server procedures. | |
568 | * Only the results of non-idempotent operations are cached. | |
569 | */ | |
1da177e4 LT |
570 | struct nfsd_void { int dummy; }; |
571 | ||
1da177e4 LT |
572 | #define ST 1 /* status */ |
573 | #define FH 8 /* filehandle */ | |
574 | #define AT 18 /* attributes */ | |
575 | ||
576 | static struct svc_procedure nfsd_procedures2[18] = { | |
b9081d90 | 577 | [NFSPROC_NULL] = { |
a6beb732 | 578 | .pc_func = nfsd_proc_null, |
026fec7e | 579 | .pc_decode = nfssvc_decode_void, |
63f8de37 | 580 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
581 | .pc_argsize = sizeof(struct nfsd_void), |
582 | .pc_ressize = sizeof(struct nfsd_void), | |
583 | .pc_cachetype = RC_NOCACHE, | |
584 | .pc_xdrressize = ST, | |
585 | }, | |
586 | [NFSPROC_GETATTR] = { | |
a6beb732 | 587 | .pc_func = nfsd_proc_getattr, |
026fec7e | 588 | .pc_decode = nfssvc_decode_fhandle, |
63f8de37 | 589 | .pc_encode = nfssvc_encode_attrstat, |
8537488b | 590 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
591 | .pc_argsize = sizeof(struct nfsd_fhandle), |
592 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
593 | .pc_cachetype = RC_NOCACHE, | |
594 | .pc_xdrressize = ST+AT, | |
595 | }, | |
596 | [NFSPROC_SETATTR] = { | |
a6beb732 | 597 | .pc_func = nfsd_proc_setattr, |
026fec7e | 598 | .pc_decode = nfssvc_decode_sattrargs, |
63f8de37 | 599 | .pc_encode = nfssvc_encode_attrstat, |
8537488b | 600 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
601 | .pc_argsize = sizeof(struct nfsd_sattrargs), |
602 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
603 | .pc_cachetype = RC_REPLBUFF, | |
604 | .pc_xdrressize = ST+AT, | |
605 | }, | |
606 | [NFSPROC_ROOT] = { | |
026fec7e | 607 | .pc_decode = nfssvc_decode_void, |
63f8de37 | 608 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
609 | .pc_argsize = sizeof(struct nfsd_void), |
610 | .pc_ressize = sizeof(struct nfsd_void), | |
611 | .pc_cachetype = RC_NOCACHE, | |
612 | .pc_xdrressize = ST, | |
613 | }, | |
614 | [NFSPROC_LOOKUP] = { | |
a6beb732 | 615 | .pc_func = nfsd_proc_lookup, |
026fec7e | 616 | .pc_decode = nfssvc_decode_diropargs, |
63f8de37 | 617 | .pc_encode = nfssvc_encode_diropres, |
8537488b | 618 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
619 | .pc_argsize = sizeof(struct nfsd_diropargs), |
620 | .pc_ressize = sizeof(struct nfsd_diropres), | |
621 | .pc_cachetype = RC_NOCACHE, | |
622 | .pc_xdrressize = ST+FH+AT, | |
623 | }, | |
624 | [NFSPROC_READLINK] = { | |
a6beb732 | 625 | .pc_func = nfsd_proc_readlink, |
026fec7e | 626 | .pc_decode = nfssvc_decode_readlinkargs, |
63f8de37 | 627 | .pc_encode = nfssvc_encode_readlinkres, |
b9081d90 YZ |
628 | .pc_argsize = sizeof(struct nfsd_readlinkargs), |
629 | .pc_ressize = sizeof(struct nfsd_readlinkres), | |
630 | .pc_cachetype = RC_NOCACHE, | |
631 | .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4, | |
632 | }, | |
633 | [NFSPROC_READ] = { | |
a6beb732 | 634 | .pc_func = nfsd_proc_read, |
026fec7e | 635 | .pc_decode = nfssvc_decode_readargs, |
63f8de37 | 636 | .pc_encode = nfssvc_encode_readres, |
8537488b | 637 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
638 | .pc_argsize = sizeof(struct nfsd_readargs), |
639 | .pc_ressize = sizeof(struct nfsd_readres), | |
640 | .pc_cachetype = RC_NOCACHE, | |
641 | .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4, | |
642 | }, | |
643 | [NFSPROC_WRITECACHE] = { | |
026fec7e | 644 | .pc_decode = nfssvc_decode_void, |
63f8de37 | 645 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
646 | .pc_argsize = sizeof(struct nfsd_void), |
647 | .pc_ressize = sizeof(struct nfsd_void), | |
648 | .pc_cachetype = RC_NOCACHE, | |
649 | .pc_xdrressize = ST, | |
650 | }, | |
651 | [NFSPROC_WRITE] = { | |
a6beb732 | 652 | .pc_func = nfsd_proc_write, |
026fec7e | 653 | .pc_decode = nfssvc_decode_writeargs, |
63f8de37 | 654 | .pc_encode = nfssvc_encode_attrstat, |
8537488b | 655 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
656 | .pc_argsize = sizeof(struct nfsd_writeargs), |
657 | .pc_ressize = sizeof(struct nfsd_attrstat), | |
658 | .pc_cachetype = RC_REPLBUFF, | |
659 | .pc_xdrressize = ST+AT, | |
660 | }, | |
661 | [NFSPROC_CREATE] = { | |
a6beb732 | 662 | .pc_func = nfsd_proc_create, |
026fec7e | 663 | .pc_decode = nfssvc_decode_createargs, |
63f8de37 | 664 | .pc_encode = nfssvc_encode_diropres, |
8537488b | 665 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
666 | .pc_argsize = sizeof(struct nfsd_createargs), |
667 | .pc_ressize = sizeof(struct nfsd_diropres), | |
668 | .pc_cachetype = RC_REPLBUFF, | |
669 | .pc_xdrressize = ST+FH+AT, | |
670 | }, | |
671 | [NFSPROC_REMOVE] = { | |
a6beb732 | 672 | .pc_func = nfsd_proc_remove, |
026fec7e | 673 | .pc_decode = nfssvc_decode_diropargs, |
63f8de37 | 674 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
675 | .pc_argsize = sizeof(struct nfsd_diropargs), |
676 | .pc_ressize = sizeof(struct nfsd_void), | |
677 | .pc_cachetype = RC_REPLSTAT, | |
678 | .pc_xdrressize = ST, | |
679 | }, | |
680 | [NFSPROC_RENAME] = { | |
a6beb732 | 681 | .pc_func = nfsd_proc_rename, |
026fec7e | 682 | .pc_decode = nfssvc_decode_renameargs, |
63f8de37 | 683 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
684 | .pc_argsize = sizeof(struct nfsd_renameargs), |
685 | .pc_ressize = sizeof(struct nfsd_void), | |
686 | .pc_cachetype = RC_REPLSTAT, | |
687 | .pc_xdrressize = ST, | |
688 | }, | |
689 | [NFSPROC_LINK] = { | |
a6beb732 | 690 | .pc_func = nfsd_proc_link, |
026fec7e | 691 | .pc_decode = nfssvc_decode_linkargs, |
63f8de37 | 692 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
693 | .pc_argsize = sizeof(struct nfsd_linkargs), |
694 | .pc_ressize = sizeof(struct nfsd_void), | |
695 | .pc_cachetype = RC_REPLSTAT, | |
696 | .pc_xdrressize = ST, | |
697 | }, | |
698 | [NFSPROC_SYMLINK] = { | |
a6beb732 | 699 | .pc_func = nfsd_proc_symlink, |
026fec7e | 700 | .pc_decode = nfssvc_decode_symlinkargs, |
63f8de37 | 701 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
702 | .pc_argsize = sizeof(struct nfsd_symlinkargs), |
703 | .pc_ressize = sizeof(struct nfsd_void), | |
704 | .pc_cachetype = RC_REPLSTAT, | |
705 | .pc_xdrressize = ST, | |
706 | }, | |
707 | [NFSPROC_MKDIR] = { | |
a6beb732 | 708 | .pc_func = nfsd_proc_mkdir, |
026fec7e | 709 | .pc_decode = nfssvc_decode_createargs, |
63f8de37 | 710 | .pc_encode = nfssvc_encode_diropres, |
8537488b | 711 | .pc_release = nfssvc_release_fhandle, |
b9081d90 YZ |
712 | .pc_argsize = sizeof(struct nfsd_createargs), |
713 | .pc_ressize = sizeof(struct nfsd_diropres), | |
714 | .pc_cachetype = RC_REPLBUFF, | |
715 | .pc_xdrressize = ST+FH+AT, | |
716 | }, | |
717 | [NFSPROC_RMDIR] = { | |
a6beb732 | 718 | .pc_func = nfsd_proc_rmdir, |
026fec7e | 719 | .pc_decode = nfssvc_decode_diropargs, |
63f8de37 | 720 | .pc_encode = nfssvc_encode_void, |
b9081d90 YZ |
721 | .pc_argsize = sizeof(struct nfsd_diropargs), |
722 | .pc_ressize = sizeof(struct nfsd_void), | |
723 | .pc_cachetype = RC_REPLSTAT, | |
724 | .pc_xdrressize = ST, | |
725 | }, | |
726 | [NFSPROC_READDIR] = { | |
a6beb732 | 727 | .pc_func = nfsd_proc_readdir, |
026fec7e | 728 | .pc_decode = nfssvc_decode_readdirargs, |
63f8de37 | 729 | .pc_encode = nfssvc_encode_readdirres, |
b9081d90 YZ |
730 | .pc_argsize = sizeof(struct nfsd_readdirargs), |
731 | .pc_ressize = sizeof(struct nfsd_readdirres), | |
732 | .pc_cachetype = RC_NOCACHE, | |
733 | }, | |
734 | [NFSPROC_STATFS] = { | |
a6beb732 | 735 | .pc_func = nfsd_proc_statfs, |
026fec7e | 736 | .pc_decode = nfssvc_decode_fhandle, |
63f8de37 | 737 | .pc_encode = nfssvc_encode_statfsres, |
b9081d90 YZ |
738 | .pc_argsize = sizeof(struct nfsd_fhandle), |
739 | .pc_ressize = sizeof(struct nfsd_statfsres), | |
740 | .pc_cachetype = RC_NOCACHE, | |
741 | .pc_xdrressize = ST+5, | |
742 | }, | |
1da177e4 LT |
743 | }; |
744 | ||
745 | ||
7fd38af9 | 746 | static unsigned int nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]; |
1da177e4 LT |
747 | struct svc_version nfsd_version2 = { |
748 | .vs_vers = 2, | |
749 | .vs_nproc = 18, | |
750 | .vs_proc = nfsd_procedures2, | |
7fd38af9 | 751 | .vs_count = nfsd_count2, |
1da177e4 LT |
752 | .vs_dispatch = nfsd_dispatch, |
753 | .vs_xdrsize = NFS2_SVC_XDRSIZE, | |
754 | }; | |
755 | ||
756 | /* | |
757 | * Map errnos to NFS errnos. | |
758 | */ | |
63f10311 | 759 | __be32 |
1da177e4 LT |
760 | nfserrno (int errno) |
761 | { | |
762 | static struct { | |
63f10311 | 763 | __be32 nfserr; |
1da177e4 LT |
764 | int syserr; |
765 | } nfs_errtbl[] = { | |
766 | { nfs_ok, 0 }, | |
767 | { nfserr_perm, -EPERM }, | |
768 | { nfserr_noent, -ENOENT }, | |
769 | { nfserr_io, -EIO }, | |
770 | { nfserr_nxio, -ENXIO }, | |
62814d6a | 771 | { nfserr_fbig, -E2BIG }, |
1da177e4 LT |
772 | { nfserr_acces, -EACCES }, |
773 | { nfserr_exist, -EEXIST }, | |
774 | { nfserr_xdev, -EXDEV }, | |
775 | { nfserr_mlink, -EMLINK }, | |
776 | { nfserr_nodev, -ENODEV }, | |
777 | { nfserr_notdir, -ENOTDIR }, | |
778 | { nfserr_isdir, -EISDIR }, | |
779 | { nfserr_inval, -EINVAL }, | |
780 | { nfserr_fbig, -EFBIG }, | |
781 | { nfserr_nospc, -ENOSPC }, | |
782 | { nfserr_rofs, -EROFS }, | |
783 | { nfserr_mlink, -EMLINK }, | |
784 | { nfserr_nametoolong, -ENAMETOOLONG }, | |
785 | { nfserr_notempty, -ENOTEMPTY }, | |
786 | #ifdef EDQUOT | |
787 | { nfserr_dquot, -EDQUOT }, | |
788 | #endif | |
789 | { nfserr_stale, -ESTALE }, | |
790 | { nfserr_jukebox, -ETIMEDOUT }, | |
599eb304 | 791 | { nfserr_jukebox, -ERESTARTSYS }, |
062304a8 BF |
792 | { nfserr_jukebox, -EAGAIN }, |
793 | { nfserr_jukebox, -EWOULDBLOCK }, | |
3beb6cd1 | 794 | { nfserr_jukebox, -ENOMEM }, |
1da177e4 | 795 | { nfserr_io, -ETXTBSY }, |
a838cc49 | 796 | { nfserr_notsupp, -EOPNOTSUPP }, |
b7aeda40 | 797 | { nfserr_toosmall, -ETOOSMALL }, |
f39bde24 | 798 | { nfserr_serverfault, -ESERVERFAULT }, |
b3fbfe0e | 799 | { nfserr_serverfault, -ENFILE }, |
42e61616 | 800 | { nfserr_io, -EUCLEAN }, |
c952cd4e | 801 | { nfserr_perm, -ENOKEY }, |
1da177e4 LT |
802 | }; |
803 | int i; | |
804 | ||
63f10311 | 805 | for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { |
1da177e4 LT |
806 | if (nfs_errtbl[i].syserr == errno) |
807 | return nfs_errtbl[i].nfserr; | |
808 | } | |
ff30f08c | 809 | WARN_ONCE(1, "nfsd: non-standard errno: %d\n", errno); |
1da177e4 LT |
810 | return nfserr_io; |
811 | } | |
812 |