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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Process version 3 NFS requests. |
3 | * | |
4 | * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de> | |
5 | */ | |
6 | ||
1da177e4 LT |
7 | #include <linux/fs.h> |
8 | #include <linux/ext2_fs.h> | |
12214cb7 | 9 | #include <linux/magic.h> |
1da177e4 | 10 | |
9a74af21 BH |
11 | #include "cache.h" |
12 | #include "xdr3.h" | |
0a3adade | 13 | #include "vfs.h" |
1da177e4 LT |
14 | |
15 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
16 | ||
17 | #define RETURN_STATUS(st) { resp->status = (st); return (st); } | |
18 | ||
19 | static int nfs3_ftypes[] = { | |
20 | 0, /* NF3NON */ | |
21 | S_IFREG, /* NF3REG */ | |
22 | S_IFDIR, /* NF3DIR */ | |
23 | S_IFBLK, /* NF3BLK */ | |
24 | S_IFCHR, /* NF3CHR */ | |
25 | S_IFLNK, /* NF3LNK */ | |
26 | S_IFSOCK, /* NF3SOCK */ | |
27 | S_IFIFO, /* NF3FIFO */ | |
28 | }; | |
29 | ||
30 | /* | |
31 | * NULL call. | |
32 | */ | |
7111c66e | 33 | static __be32 |
1da177e4 LT |
34 | nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
35 | { | |
36 | return nfs_ok; | |
37 | } | |
38 | ||
39 | /* | |
40 | * Get a file's attributes | |
41 | */ | |
7111c66e | 42 | static __be32 |
1da177e4 LT |
43 | nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, |
44 | struct nfsd3_attrstat *resp) | |
45 | { | |
c4d987ba | 46 | __be32 nfserr; |
1da177e4 LT |
47 | |
48 | dprintk("nfsd: GETATTR(3) %s\n", | |
a334de28 | 49 | SVCFH_fmt(&argp->fh)); |
1da177e4 LT |
50 | |
51 | fh_copy(&resp->fh, &argp->fh); | |
04716e66 BF |
52 | nfserr = fh_verify(rqstp, &resp->fh, 0, |
53 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
a334de28 DS |
54 | if (nfserr) |
55 | RETURN_STATUS(nfserr); | |
56 | ||
3dadecce | 57 | nfserr = fh_getattr(&resp->fh, &resp->stat); |
a334de28 | 58 | |
1da177e4 LT |
59 | RETURN_STATUS(nfserr); |
60 | } | |
61 | ||
62 | /* | |
63 | * Set a file's attributes | |
64 | */ | |
7111c66e | 65 | static __be32 |
1da177e4 LT |
66 | nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp, |
67 | struct nfsd3_attrstat *resp) | |
68 | { | |
c4d987ba | 69 | __be32 nfserr; |
1da177e4 LT |
70 | |
71 | dprintk("nfsd: SETATTR(3) %s\n", | |
72 | SVCFH_fmt(&argp->fh)); | |
73 | ||
74 | fh_copy(&resp->fh, &argp->fh); | |
75 | nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs, | |
76 | argp->check_guard, argp->guardtime); | |
77 | RETURN_STATUS(nfserr); | |
78 | } | |
79 | ||
80 | /* | |
81 | * Look up a path name component | |
82 | */ | |
7111c66e | 83 | static __be32 |
1da177e4 LT |
84 | nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
85 | struct nfsd3_diropres *resp) | |
86 | { | |
c4d987ba | 87 | __be32 nfserr; |
1da177e4 LT |
88 | |
89 | dprintk("nfsd: LOOKUP(3) %s %.*s\n", | |
90 | SVCFH_fmt(&argp->fh), | |
91 | argp->len, | |
92 | argp->name); | |
93 | ||
94 | fh_copy(&resp->dirfh, &argp->fh); | |
95 | fh_init(&resp->fh, NFS3_FHSIZE); | |
96 | ||
97 | nfserr = nfsd_lookup(rqstp, &resp->dirfh, | |
98 | argp->name, | |
99 | argp->len, | |
100 | &resp->fh); | |
101 | RETURN_STATUS(nfserr); | |
102 | } | |
103 | ||
104 | /* | |
105 | * Check file access | |
106 | */ | |
7111c66e | 107 | static __be32 |
1da177e4 LT |
108 | nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp, |
109 | struct nfsd3_accessres *resp) | |
110 | { | |
c4d987ba | 111 | __be32 nfserr; |
1da177e4 LT |
112 | |
113 | dprintk("nfsd: ACCESS(3) %s 0x%x\n", | |
114 | SVCFH_fmt(&argp->fh), | |
115 | argp->access); | |
116 | ||
117 | fh_copy(&resp->fh, &argp->fh); | |
118 | resp->access = argp->access; | |
119 | nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL); | |
120 | RETURN_STATUS(nfserr); | |
121 | } | |
122 | ||
123 | /* | |
124 | * Read a symlink. | |
125 | */ | |
7111c66e | 126 | static __be32 |
1da177e4 LT |
127 | nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp, |
128 | struct nfsd3_readlinkres *resp) | |
129 | { | |
c4d987ba | 130 | __be32 nfserr; |
1da177e4 LT |
131 | |
132 | dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); | |
133 | ||
134 | /* Read the symlink. */ | |
135 | fh_copy(&resp->fh, &argp->fh); | |
136 | resp->len = NFS3_MAXPATHLEN; | |
137 | nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len); | |
138 | RETURN_STATUS(nfserr); | |
139 | } | |
140 | ||
141 | /* | |
142 | * Read a portion of a file. | |
143 | */ | |
7111c66e | 144 | static __be32 |
1da177e4 LT |
145 | nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp, |
146 | struct nfsd3_readres *resp) | |
147 | { | |
c4d987ba | 148 | __be32 nfserr; |
7adae489 | 149 | u32 max_blocksize = svc_max_payload(rqstp); |
ac503e4a | 150 | unsigned long cnt = min(argp->count, max_blocksize); |
1da177e4 | 151 | |
18b631f8 | 152 | dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n", |
1da177e4 LT |
153 | SVCFH_fmt(&argp->fh), |
154 | (unsigned long) argp->count, | |
18b631f8 | 155 | (unsigned long long) argp->offset); |
1da177e4 LT |
156 | |
157 | /* Obtain buffer pointer for payload. | |
158 | * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof) | |
159 | * + 1 (xdr opaque byte count) = 26 | |
160 | */ | |
ac503e4a | 161 | resp->count = cnt; |
cd123012 | 162 | svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); |
1da177e4 LT |
163 | |
164 | fh_copy(&resp->fh, &argp->fh); | |
039a87ca | 165 | nfserr = nfsd_read(rqstp, &resp->fh, |
1da177e4 | 166 | argp->offset, |
3cc03b16 | 167 | rqstp->rq_vec, argp->vlen, |
1da177e4 LT |
168 | &resp->count); |
169 | if (nfserr == 0) { | |
2b0143b5 | 170 | struct inode *inode = d_inode(resp->fh.fh_dentry); |
ac503e4a BC |
171 | resp->eof = nfsd_eof_on_read(cnt, resp->count, argp->offset, |
172 | inode->i_size); | |
1da177e4 LT |
173 | } |
174 | ||
175 | RETURN_STATUS(nfserr); | |
176 | } | |
177 | ||
178 | /* | |
179 | * Write data to a file | |
180 | */ | |
7111c66e | 181 | static __be32 |
1da177e4 LT |
182 | nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp, |
183 | struct nfsd3_writeres *resp) | |
184 | { | |
c4d987ba | 185 | __be32 nfserr; |
31dec253 | 186 | unsigned long cnt = argp->len; |
1da177e4 | 187 | |
18b631f8 | 188 | dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n", |
1da177e4 LT |
189 | SVCFH_fmt(&argp->fh), |
190 | argp->len, | |
18b631f8 | 191 | (unsigned long long) argp->offset, |
1da177e4 LT |
192 | argp->stable? " stable" : ""); |
193 | ||
194 | fh_copy(&resp->fh, &argp->fh); | |
195 | resp->committed = argp->stable; | |
52e380e0 KM |
196 | nfserr = nfsd_write(rqstp, &resp->fh, argp->offset, |
197 | rqstp->rq_vec, argp->vlen, | |
198 | &cnt, resp->committed); | |
31dec253 | 199 | resp->count = cnt; |
1da177e4 LT |
200 | RETURN_STATUS(nfserr); |
201 | } | |
202 | ||
203 | /* | |
204 | * With NFSv3, CREATE processing is a lot easier than with NFSv2. | |
205 | * At least in theory; we'll see how it fares in practice when the | |
206 | * first reports about SunOS compatibility problems start to pour in... | |
207 | */ | |
7111c66e | 208 | static __be32 |
1da177e4 LT |
209 | nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, |
210 | struct nfsd3_diropres *resp) | |
211 | { | |
212 | svc_fh *dirfhp, *newfhp = NULL; | |
213 | struct iattr *attr; | |
c4d987ba | 214 | __be32 nfserr; |
1da177e4 LT |
215 | |
216 | dprintk("nfsd: CREATE(3) %s %.*s\n", | |
217 | SVCFH_fmt(&argp->fh), | |
218 | argp->len, | |
219 | argp->name); | |
220 | ||
221 | dirfhp = fh_copy(&resp->dirfh, &argp->fh); | |
222 | newfhp = fh_init(&resp->fh, NFS3_FHSIZE); | |
223 | attr = &argp->attrs; | |
224 | ||
1da177e4 LT |
225 | /* Unfudge the mode bits */ |
226 | attr->ia_mode &= ~S_IFMT; | |
227 | if (!(attr->ia_valid & ATTR_MODE)) { | |
228 | attr->ia_valid |= ATTR_MODE; | |
229 | attr->ia_mode = S_IFREG; | |
230 | } else { | |
231 | attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG; | |
232 | } | |
233 | ||
234 | /* Now create the file and set attributes */ | |
ac6721a1 | 235 | nfserr = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len, |
1da177e4 | 236 | attr, newfhp, |
95c7a20a | 237 | argp->createmode, (u32 *)argp->verf, NULL, NULL); |
1da177e4 LT |
238 | |
239 | RETURN_STATUS(nfserr); | |
240 | } | |
241 | ||
242 | /* | |
243 | * Make directory. This operation is not idempotent. | |
244 | */ | |
7111c66e | 245 | static __be32 |
1da177e4 LT |
246 | nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, |
247 | struct nfsd3_diropres *resp) | |
248 | { | |
c4d987ba | 249 | __be32 nfserr; |
1da177e4 LT |
250 | |
251 | dprintk("nfsd: MKDIR(3) %s %.*s\n", | |
252 | SVCFH_fmt(&argp->fh), | |
253 | argp->len, | |
254 | argp->name); | |
255 | ||
256 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
257 | fh_copy(&resp->dirfh, &argp->fh); | |
258 | fh_init(&resp->fh, NFS3_FHSIZE); | |
259 | nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, | |
260 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
43a9aa64 | 261 | fh_unlock(&resp->dirfh); |
1da177e4 LT |
262 | RETURN_STATUS(nfserr); |
263 | } | |
264 | ||
7111c66e | 265 | static __be32 |
1da177e4 LT |
266 | nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp, |
267 | struct nfsd3_diropres *resp) | |
268 | { | |
c4d987ba | 269 | __be32 nfserr; |
1da177e4 LT |
270 | |
271 | dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n", | |
272 | SVCFH_fmt(&argp->ffh), | |
273 | argp->flen, argp->fname, | |
274 | argp->tlen, argp->tname); | |
275 | ||
276 | fh_copy(&resp->dirfh, &argp->ffh); | |
277 | fh_init(&resp->fh, NFS3_FHSIZE); | |
278 | nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen, | |
1e444f5b | 279 | argp->tname, &resp->fh); |
1da177e4 LT |
280 | RETURN_STATUS(nfserr); |
281 | } | |
282 | ||
283 | /* | |
284 | * Make socket/fifo/device. | |
285 | */ | |
7111c66e | 286 | static __be32 |
1da177e4 LT |
287 | nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp, |
288 | struct nfsd3_diropres *resp) | |
289 | { | |
c4d987ba AV |
290 | __be32 nfserr; |
291 | int type; | |
1da177e4 LT |
292 | dev_t rdev = 0; |
293 | ||
294 | dprintk("nfsd: MKNOD(3) %s %.*s\n", | |
295 | SVCFH_fmt(&argp->fh), | |
296 | argp->len, | |
297 | argp->name); | |
298 | ||
299 | fh_copy(&resp->dirfh, &argp->fh); | |
300 | fh_init(&resp->fh, NFS3_FHSIZE); | |
301 | ||
302 | if (argp->ftype == 0 || argp->ftype >= NF3BAD) | |
303 | RETURN_STATUS(nfserr_inval); | |
304 | if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) { | |
305 | rdev = MKDEV(argp->major, argp->minor); | |
306 | if (MAJOR(rdev) != argp->major || | |
307 | MINOR(rdev) != argp->minor) | |
308 | RETURN_STATUS(nfserr_inval); | |
309 | } else | |
310 | if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) | |
311 | RETURN_STATUS(nfserr_inval); | |
312 | ||
313 | type = nfs3_ftypes[argp->ftype]; | |
314 | nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, | |
315 | &argp->attrs, type, rdev, &resp->fh); | |
43a9aa64 | 316 | fh_unlock(&resp->dirfh); |
1da177e4 LT |
317 | RETURN_STATUS(nfserr); |
318 | } | |
319 | ||
320 | /* | |
321 | * Remove file/fifo/socket etc. | |
322 | */ | |
7111c66e | 323 | static __be32 |
1da177e4 LT |
324 | nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
325 | struct nfsd3_attrstat *resp) | |
326 | { | |
c4d987ba | 327 | __be32 nfserr; |
1da177e4 LT |
328 | |
329 | dprintk("nfsd: REMOVE(3) %s %.*s\n", | |
330 | SVCFH_fmt(&argp->fh), | |
331 | argp->len, | |
332 | argp->name); | |
333 | ||
334 | /* Unlink. -S_IFDIR means file must not be a directory */ | |
335 | fh_copy(&resp->fh, &argp->fh); | |
336 | nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len); | |
43a9aa64 | 337 | fh_unlock(&resp->fh); |
1da177e4 LT |
338 | RETURN_STATUS(nfserr); |
339 | } | |
340 | ||
341 | /* | |
342 | * Remove a directory | |
343 | */ | |
7111c66e | 344 | static __be32 |
1da177e4 LT |
345 | nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
346 | struct nfsd3_attrstat *resp) | |
347 | { | |
c4d987ba | 348 | __be32 nfserr; |
1da177e4 LT |
349 | |
350 | dprintk("nfsd: RMDIR(3) %s %.*s\n", | |
351 | SVCFH_fmt(&argp->fh), | |
352 | argp->len, | |
353 | argp->name); | |
354 | ||
355 | fh_copy(&resp->fh, &argp->fh); | |
356 | nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len); | |
43a9aa64 | 357 | fh_unlock(&resp->fh); |
1da177e4 LT |
358 | RETURN_STATUS(nfserr); |
359 | } | |
360 | ||
7111c66e | 361 | static __be32 |
1da177e4 LT |
362 | nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp, |
363 | struct nfsd3_renameres *resp) | |
364 | { | |
c4d987ba | 365 | __be32 nfserr; |
1da177e4 LT |
366 | |
367 | dprintk("nfsd: RENAME(3) %s %.*s ->\n", | |
368 | SVCFH_fmt(&argp->ffh), | |
369 | argp->flen, | |
370 | argp->fname); | |
371 | dprintk("nfsd: -> %s %.*s\n", | |
372 | SVCFH_fmt(&argp->tfh), | |
373 | argp->tlen, | |
374 | argp->tname); | |
375 | ||
376 | fh_copy(&resp->ffh, &argp->ffh); | |
377 | fh_copy(&resp->tfh, &argp->tfh); | |
378 | nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, | |
379 | &resp->tfh, argp->tname, argp->tlen); | |
380 | RETURN_STATUS(nfserr); | |
381 | } | |
382 | ||
7111c66e | 383 | static __be32 |
1da177e4 LT |
384 | nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp, |
385 | struct nfsd3_linkres *resp) | |
386 | { | |
c4d987ba | 387 | __be32 nfserr; |
1da177e4 LT |
388 | |
389 | dprintk("nfsd: LINK(3) %s ->\n", | |
390 | SVCFH_fmt(&argp->ffh)); | |
391 | dprintk("nfsd: -> %s %.*s\n", | |
392 | SVCFH_fmt(&argp->tfh), | |
393 | argp->tlen, | |
394 | argp->tname); | |
395 | ||
396 | fh_copy(&resp->fh, &argp->ffh); | |
397 | fh_copy(&resp->tfh, &argp->tfh); | |
398 | nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, | |
399 | &resp->fh); | |
400 | RETURN_STATUS(nfserr); | |
401 | } | |
402 | ||
403 | /* | |
404 | * Read a portion of a directory. | |
405 | */ | |
7111c66e | 406 | static __be32 |
1da177e4 LT |
407 | nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, |
408 | struct nfsd3_readdirres *resp) | |
409 | { | |
c4d987ba AV |
410 | __be32 nfserr; |
411 | int count; | |
1da177e4 LT |
412 | |
413 | dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", | |
414 | SVCFH_fmt(&argp->fh), | |
415 | argp->count, (u32) argp->cookie); | |
416 | ||
417 | /* Make sure we've room for the NULL ptr & eof flag, and shrink to | |
418 | * client read size */ | |
419 | count = (argp->count >> 2) - 2; | |
420 | ||
421 | /* Read directory and encode entries on the fly */ | |
422 | fh_copy(&resp->fh, &argp->fh); | |
423 | ||
424 | resp->buflen = count; | |
425 | resp->common.err = nfs_ok; | |
426 | resp->buffer = argp->buffer; | |
427 | resp->rqstp = rqstp; | |
428 | nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie, | |
429 | &resp->common, nfs3svc_encode_entry); | |
430 | memcpy(resp->verf, argp->verf, 8); | |
431 | resp->count = resp->buffer - argp->buffer; | |
432 | if (resp->offset) | |
433 | xdr_encode_hyper(resp->offset, argp->cookie); | |
434 | ||
435 | RETURN_STATUS(nfserr); | |
436 | } | |
437 | ||
438 | /* | |
439 | * Read a portion of a directory, including file handles and attrs. | |
440 | * For now, we choose to ignore the dircount parameter. | |
441 | */ | |
7111c66e | 442 | static __be32 |
1da177e4 LT |
443 | nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, |
444 | struct nfsd3_readdirres *resp) | |
445 | { | |
c4d987ba AV |
446 | __be32 nfserr; |
447 | int count = 0; | |
1da177e4 | 448 | loff_t offset; |
afc59400 | 449 | struct page **p; |
1da177e4 LT |
450 | caddr_t page_addr = NULL; |
451 | ||
452 | dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", | |
453 | SVCFH_fmt(&argp->fh), | |
454 | argp->count, (u32) argp->cookie); | |
455 | ||
456 | /* Convert byte count to number of words (i.e. >> 2), | |
457 | * and reserve room for the NULL ptr & eof flag (-2 words) */ | |
458 | resp->count = (argp->count >> 2) - 2; | |
459 | ||
460 | /* Read directory and encode entries on the fly */ | |
461 | fh_copy(&resp->fh, &argp->fh); | |
462 | ||
463 | resp->common.err = nfs_ok; | |
464 | resp->buffer = argp->buffer; | |
465 | resp->buflen = resp->count; | |
466 | resp->rqstp = rqstp; | |
467 | offset = argp->cookie; | |
18c01ab3 RG |
468 | |
469 | nfserr = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP); | |
470 | if (nfserr) | |
471 | RETURN_STATUS(nfserr); | |
472 | ||
473 | if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) | |
474 | RETURN_STATUS(nfserr_notsupp); | |
475 | ||
1da177e4 LT |
476 | nfserr = nfsd_readdir(rqstp, &resp->fh, |
477 | &offset, | |
478 | &resp->common, | |
479 | nfs3svc_encode_entry_plus); | |
480 | memcpy(resp->verf, argp->verf, 8); | |
afc59400 BF |
481 | for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) { |
482 | page_addr = page_address(*p); | |
1da177e4 LT |
483 | |
484 | if (((caddr_t)resp->buffer >= page_addr) && | |
485 | ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { | |
486 | count += (caddr_t)resp->buffer - page_addr; | |
487 | break; | |
488 | } | |
489 | count += PAGE_SIZE; | |
490 | } | |
491 | resp->count = count >> 2; | |
492 | if (resp->offset) { | |
493 | if (unlikely(resp->offset1)) { | |
494 | /* we ended up with offset on a page boundary */ | |
495 | *resp->offset = htonl(offset >> 32); | |
496 | *resp->offset1 = htonl(offset & 0xffffffff); | |
497 | resp->offset1 = NULL; | |
498 | } else { | |
499 | xdr_encode_hyper(resp->offset, offset); | |
500 | } | |
501 | } | |
502 | ||
503 | RETURN_STATUS(nfserr); | |
504 | } | |
505 | ||
506 | /* | |
507 | * Get file system stats | |
508 | */ | |
7111c66e | 509 | static __be32 |
1da177e4 LT |
510 | nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
511 | struct nfsd3_fsstatres *resp) | |
512 | { | |
c4d987ba | 513 | __be32 nfserr; |
1da177e4 LT |
514 | |
515 | dprintk("nfsd: FSSTAT(3) %s\n", | |
516 | SVCFH_fmt(&argp->fh)); | |
517 | ||
04716e66 | 518 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0); |
1da177e4 LT |
519 | fh_put(&argp->fh); |
520 | RETURN_STATUS(nfserr); | |
521 | } | |
522 | ||
523 | /* | |
524 | * Get file system info | |
525 | */ | |
7111c66e | 526 | static __be32 |
1da177e4 LT |
527 | nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
528 | struct nfsd3_fsinfores *resp) | |
529 | { | |
c4d987ba | 530 | __be32 nfserr; |
7adae489 | 531 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
532 | |
533 | dprintk("nfsd: FSINFO(3) %s\n", | |
534 | SVCFH_fmt(&argp->fh)); | |
535 | ||
7adae489 GB |
536 | resp->f_rtmax = max_blocksize; |
537 | resp->f_rtpref = max_blocksize; | |
1da177e4 | 538 | resp->f_rtmult = PAGE_SIZE; |
7adae489 GB |
539 | resp->f_wtmax = max_blocksize; |
540 | resp->f_wtpref = max_blocksize; | |
1da177e4 LT |
541 | resp->f_wtmult = PAGE_SIZE; |
542 | resp->f_dtpref = PAGE_SIZE; | |
543 | resp->f_maxfilesize = ~(u32) 0; | |
544 | resp->f_properties = NFS3_FSF_DEFAULT; | |
545 | ||
04716e66 BF |
546 | nfserr = fh_verify(rqstp, &argp->fh, 0, |
547 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
1da177e4 LT |
548 | |
549 | /* Check special features of the file system. May request | |
550 | * different read/write sizes for file systems known to have | |
551 | * problems with large blocks */ | |
552 | if (nfserr == 0) { | |
fc64005c | 553 | struct super_block *sb = argp->fh.fh_dentry->d_sb; |
1da177e4 LT |
554 | |
555 | /* Note that we don't care for remote fs's here */ | |
12214cb7 | 556 | if (sb->s_magic == MSDOS_SUPER_MAGIC) { |
1da177e4 LT |
557 | resp->f_properties = NFS3_FSF_BILLYBOY; |
558 | } | |
559 | resp->f_maxfilesize = sb->s_maxbytes; | |
560 | } | |
561 | ||
562 | fh_put(&argp->fh); | |
563 | RETURN_STATUS(nfserr); | |
564 | } | |
565 | ||
566 | /* | |
567 | * Get pathconf info for the specified file | |
568 | */ | |
7111c66e | 569 | static __be32 |
1da177e4 LT |
570 | nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
571 | struct nfsd3_pathconfres *resp) | |
572 | { | |
c4d987ba | 573 | __be32 nfserr; |
1da177e4 LT |
574 | |
575 | dprintk("nfsd: PATHCONF(3) %s\n", | |
576 | SVCFH_fmt(&argp->fh)); | |
577 | ||
578 | /* Set default pathconf */ | |
579 | resp->p_link_max = 255; /* at least */ | |
580 | resp->p_name_max = 255; /* at least */ | |
581 | resp->p_no_trunc = 0; | |
582 | resp->p_chown_restricted = 1; | |
583 | resp->p_case_insensitive = 0; | |
584 | resp->p_case_preserving = 1; | |
585 | ||
8837abca | 586 | nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
587 | |
588 | if (nfserr == 0) { | |
fc64005c | 589 | struct super_block *sb = argp->fh.fh_dentry->d_sb; |
1da177e4 LT |
590 | |
591 | /* Note that we don't care for remote fs's here */ | |
592 | switch (sb->s_magic) { | |
593 | case EXT2_SUPER_MAGIC: | |
594 | resp->p_link_max = EXT2_LINK_MAX; | |
595 | resp->p_name_max = EXT2_NAME_LEN; | |
596 | break; | |
12214cb7 | 597 | case MSDOS_SUPER_MAGIC: |
1da177e4 LT |
598 | resp->p_case_insensitive = 1; |
599 | resp->p_case_preserving = 0; | |
600 | break; | |
601 | } | |
602 | } | |
603 | ||
604 | fh_put(&argp->fh); | |
605 | RETURN_STATUS(nfserr); | |
606 | } | |
607 | ||
608 | ||
609 | /* | |
610 | * Commit a file (range) to stable storage. | |
611 | */ | |
7111c66e | 612 | static __be32 |
1da177e4 LT |
613 | nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp, |
614 | struct nfsd3_commitres *resp) | |
615 | { | |
c4d987ba | 616 | __be32 nfserr; |
1da177e4 LT |
617 | |
618 | dprintk("nfsd: COMMIT(3) %s %u@%Lu\n", | |
619 | SVCFH_fmt(&argp->fh), | |
620 | argp->count, | |
621 | (unsigned long long) argp->offset); | |
622 | ||
623 | if (argp->offset > NFS_OFFSET_MAX) | |
624 | RETURN_STATUS(nfserr_inval); | |
625 | ||
626 | fh_copy(&resp->fh, &argp->fh); | |
627 | nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count); | |
628 | ||
629 | RETURN_STATUS(nfserr); | |
630 | } | |
631 | ||
632 | ||
633 | /* | |
634 | * NFSv3 Server procedures. | |
635 | * Only the results of non-idempotent operations are cached. | |
636 | */ | |
1da177e4 LT |
637 | #define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle |
638 | #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat | |
639 | #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat | |
640 | #define nfsd3_mkdirargs nfsd3_createargs | |
641 | #define nfsd3_readdirplusargs nfsd3_readdirargs | |
642 | #define nfsd3_fhandleargs nfsd_fhandle | |
643 | #define nfsd3_fhandleres nfsd3_attrstat | |
644 | #define nfsd3_attrstatres nfsd3_attrstat | |
645 | #define nfsd3_wccstatres nfsd3_attrstat | |
646 | #define nfsd3_createres nfsd3_diropres | |
647 | #define nfsd3_voidres nfsd3_voidargs | |
648 | struct nfsd3_voidargs { int dummy; }; | |
649 | ||
650 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
651 | { (svc_procfunc) nfsd3_proc_##name, \ | |
652 | (kxdrproc_t) nfs3svc_decode_##argt##args, \ | |
653 | (kxdrproc_t) nfs3svc_encode_##rest##res, \ | |
654 | (kxdrproc_t) nfs3svc_release_##relt, \ | |
655 | sizeof(struct nfsd3_##argt##args), \ | |
656 | sizeof(struct nfsd3_##rest##res), \ | |
657 | 0, \ | |
658 | cache, \ | |
659 | respsize, \ | |
660 | } | |
661 | ||
662 | #define ST 1 /* status*/ | |
663 | #define FH 17 /* filehandle with length */ | |
664 | #define AT 21 /* attributes */ | |
665 | #define pAT (1+AT) /* post attributes - conditional */ | |
666 | #define WC (7+pAT) /* WCC attributes */ | |
667 | ||
668 | static struct svc_procedure nfsd_procedures3[22] = { | |
b9081d90 YZ |
669 | [NFS3PROC_NULL] = { |
670 | .pc_func = (svc_procfunc) nfsd3_proc_null, | |
671 | .pc_encode = (kxdrproc_t) nfs3svc_encode_voidres, | |
672 | .pc_argsize = sizeof(struct nfsd3_voidargs), | |
673 | .pc_ressize = sizeof(struct nfsd3_voidres), | |
674 | .pc_cachetype = RC_NOCACHE, | |
675 | .pc_xdrressize = ST, | |
676 | }, | |
677 | [NFS3PROC_GETATTR] = { | |
678 | .pc_func = (svc_procfunc) nfsd3_proc_getattr, | |
679 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
680 | .pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres, | |
681 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
682 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
683 | .pc_ressize = sizeof(struct nfsd3_attrstatres), | |
684 | .pc_cachetype = RC_NOCACHE, | |
685 | .pc_xdrressize = ST+AT, | |
686 | }, | |
687 | [NFS3PROC_SETATTR] = { | |
688 | .pc_func = (svc_procfunc) nfsd3_proc_setattr, | |
689 | .pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs, | |
690 | .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres, | |
691 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
692 | .pc_argsize = sizeof(struct nfsd3_sattrargs), | |
693 | .pc_ressize = sizeof(struct nfsd3_wccstatres), | |
694 | .pc_cachetype = RC_REPLBUFF, | |
695 | .pc_xdrressize = ST+WC, | |
696 | }, | |
697 | [NFS3PROC_LOOKUP] = { | |
698 | .pc_func = (svc_procfunc) nfsd3_proc_lookup, | |
699 | .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs, | |
700 | .pc_encode = (kxdrproc_t) nfs3svc_encode_diropres, | |
701 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
702 | .pc_argsize = sizeof(struct nfsd3_diropargs), | |
703 | .pc_ressize = sizeof(struct nfsd3_diropres), | |
704 | .pc_cachetype = RC_NOCACHE, | |
705 | .pc_xdrressize = ST+FH+pAT+pAT, | |
706 | }, | |
707 | [NFS3PROC_ACCESS] = { | |
708 | .pc_func = (svc_procfunc) nfsd3_proc_access, | |
709 | .pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs, | |
710 | .pc_encode = (kxdrproc_t) nfs3svc_encode_accessres, | |
711 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
712 | .pc_argsize = sizeof(struct nfsd3_accessargs), | |
713 | .pc_ressize = sizeof(struct nfsd3_accessres), | |
714 | .pc_cachetype = RC_NOCACHE, | |
715 | .pc_xdrressize = ST+pAT+1, | |
716 | }, | |
717 | [NFS3PROC_READLINK] = { | |
718 | .pc_func = (svc_procfunc) nfsd3_proc_readlink, | |
719 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs, | |
720 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres, | |
721 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
722 | .pc_argsize = sizeof(struct nfsd3_readlinkargs), | |
723 | .pc_ressize = sizeof(struct nfsd3_readlinkres), | |
724 | .pc_cachetype = RC_NOCACHE, | |
725 | .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4, | |
726 | }, | |
727 | [NFS3PROC_READ] = { | |
728 | .pc_func = (svc_procfunc) nfsd3_proc_read, | |
729 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readargs, | |
730 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readres, | |
731 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
732 | .pc_argsize = sizeof(struct nfsd3_readargs), | |
733 | .pc_ressize = sizeof(struct nfsd3_readres), | |
734 | .pc_cachetype = RC_NOCACHE, | |
735 | .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4, | |
736 | }, | |
737 | [NFS3PROC_WRITE] = { | |
738 | .pc_func = (svc_procfunc) nfsd3_proc_write, | |
739 | .pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs, | |
740 | .pc_encode = (kxdrproc_t) nfs3svc_encode_writeres, | |
741 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
742 | .pc_argsize = sizeof(struct nfsd3_writeargs), | |
743 | .pc_ressize = sizeof(struct nfsd3_writeres), | |
744 | .pc_cachetype = RC_REPLBUFF, | |
745 | .pc_xdrressize = ST+WC+4, | |
746 | }, | |
747 | [NFS3PROC_CREATE] = { | |
748 | .pc_func = (svc_procfunc) nfsd3_proc_create, | |
749 | .pc_decode = (kxdrproc_t) nfs3svc_decode_createargs, | |
750 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
751 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
752 | .pc_argsize = sizeof(struct nfsd3_createargs), | |
753 | .pc_ressize = sizeof(struct nfsd3_createres), | |
754 | .pc_cachetype = RC_REPLBUFF, | |
755 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
756 | }, | |
757 | [NFS3PROC_MKDIR] = { | |
758 | .pc_func = (svc_procfunc) nfsd3_proc_mkdir, | |
759 | .pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs, | |
760 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
761 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
762 | .pc_argsize = sizeof(struct nfsd3_mkdirargs), | |
763 | .pc_ressize = sizeof(struct nfsd3_createres), | |
764 | .pc_cachetype = RC_REPLBUFF, | |
765 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
766 | }, | |
767 | [NFS3PROC_SYMLINK] = { | |
768 | .pc_func = (svc_procfunc) nfsd3_proc_symlink, | |
769 | .pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs, | |
770 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
771 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
772 | .pc_argsize = sizeof(struct nfsd3_symlinkargs), | |
773 | .pc_ressize = sizeof(struct nfsd3_createres), | |
774 | .pc_cachetype = RC_REPLBUFF, | |
775 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
776 | }, | |
777 | [NFS3PROC_MKNOD] = { | |
778 | .pc_func = (svc_procfunc) nfsd3_proc_mknod, | |
779 | .pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs, | |
780 | .pc_encode = (kxdrproc_t) nfs3svc_encode_createres, | |
781 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
782 | .pc_argsize = sizeof(struct nfsd3_mknodargs), | |
783 | .pc_ressize = sizeof(struct nfsd3_createres), | |
784 | .pc_cachetype = RC_REPLBUFF, | |
785 | .pc_xdrressize = ST+(1+FH+pAT)+WC, | |
786 | }, | |
787 | [NFS3PROC_REMOVE] = { | |
788 | .pc_func = (svc_procfunc) nfsd3_proc_remove, | |
789 | .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs, | |
790 | .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres, | |
791 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
792 | .pc_argsize = sizeof(struct nfsd3_diropargs), | |
793 | .pc_ressize = sizeof(struct nfsd3_wccstatres), | |
794 | .pc_cachetype = RC_REPLBUFF, | |
795 | .pc_xdrressize = ST+WC, | |
796 | }, | |
797 | [NFS3PROC_RMDIR] = { | |
798 | .pc_func = (svc_procfunc) nfsd3_proc_rmdir, | |
799 | .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs, | |
800 | .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres, | |
801 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
802 | .pc_argsize = sizeof(struct nfsd3_diropargs), | |
803 | .pc_ressize = sizeof(struct nfsd3_wccstatres), | |
804 | .pc_cachetype = RC_REPLBUFF, | |
805 | .pc_xdrressize = ST+WC, | |
806 | }, | |
807 | [NFS3PROC_RENAME] = { | |
808 | .pc_func = (svc_procfunc) nfsd3_proc_rename, | |
809 | .pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs, | |
810 | .pc_encode = (kxdrproc_t) nfs3svc_encode_renameres, | |
811 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
812 | .pc_argsize = sizeof(struct nfsd3_renameargs), | |
813 | .pc_ressize = sizeof(struct nfsd3_renameres), | |
814 | .pc_cachetype = RC_REPLBUFF, | |
815 | .pc_xdrressize = ST+WC+WC, | |
816 | }, | |
817 | [NFS3PROC_LINK] = { | |
818 | .pc_func = (svc_procfunc) nfsd3_proc_link, | |
819 | .pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs, | |
820 | .pc_encode = (kxdrproc_t) nfs3svc_encode_linkres, | |
821 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2, | |
822 | .pc_argsize = sizeof(struct nfsd3_linkargs), | |
823 | .pc_ressize = sizeof(struct nfsd3_linkres), | |
824 | .pc_cachetype = RC_REPLBUFF, | |
825 | .pc_xdrressize = ST+pAT+WC, | |
826 | }, | |
827 | [NFS3PROC_READDIR] = { | |
828 | .pc_func = (svc_procfunc) nfsd3_proc_readdir, | |
829 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs, | |
830 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres, | |
831 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
832 | .pc_argsize = sizeof(struct nfsd3_readdirargs), | |
833 | .pc_ressize = sizeof(struct nfsd3_readdirres), | |
834 | .pc_cachetype = RC_NOCACHE, | |
835 | }, | |
836 | [NFS3PROC_READDIRPLUS] = { | |
837 | .pc_func = (svc_procfunc) nfsd3_proc_readdirplus, | |
838 | .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs, | |
839 | .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres, | |
840 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
841 | .pc_argsize = sizeof(struct nfsd3_readdirplusargs), | |
842 | .pc_ressize = sizeof(struct nfsd3_readdirres), | |
843 | .pc_cachetype = RC_NOCACHE, | |
844 | }, | |
845 | [NFS3PROC_FSSTAT] = { | |
846 | .pc_func = (svc_procfunc) nfsd3_proc_fsstat, | |
847 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
848 | .pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres, | |
849 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
850 | .pc_ressize = sizeof(struct nfsd3_fsstatres), | |
851 | .pc_cachetype = RC_NOCACHE, | |
852 | .pc_xdrressize = ST+pAT+2*6+1, | |
853 | }, | |
854 | [NFS3PROC_FSINFO] = { | |
855 | .pc_func = (svc_procfunc) nfsd3_proc_fsinfo, | |
856 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
857 | .pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores, | |
858 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
859 | .pc_ressize = sizeof(struct nfsd3_fsinfores), | |
860 | .pc_cachetype = RC_NOCACHE, | |
861 | .pc_xdrressize = ST+pAT+12, | |
862 | }, | |
863 | [NFS3PROC_PATHCONF] = { | |
864 | .pc_func = (svc_procfunc) nfsd3_proc_pathconf, | |
865 | .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs, | |
866 | .pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres, | |
867 | .pc_argsize = sizeof(struct nfsd3_fhandleargs), | |
868 | .pc_ressize = sizeof(struct nfsd3_pathconfres), | |
869 | .pc_cachetype = RC_NOCACHE, | |
870 | .pc_xdrressize = ST+pAT+6, | |
871 | }, | |
872 | [NFS3PROC_COMMIT] = { | |
873 | .pc_func = (svc_procfunc) nfsd3_proc_commit, | |
874 | .pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs, | |
875 | .pc_encode = (kxdrproc_t) nfs3svc_encode_commitres, | |
876 | .pc_release = (kxdrproc_t) nfs3svc_release_fhandle, | |
877 | .pc_argsize = sizeof(struct nfsd3_commitargs), | |
878 | .pc_ressize = sizeof(struct nfsd3_commitres), | |
879 | .pc_cachetype = RC_NOCACHE, | |
880 | .pc_xdrressize = ST+WC+2, | |
881 | }, | |
1da177e4 LT |
882 | }; |
883 | ||
884 | struct svc_version nfsd_version3 = { | |
885 | .vs_vers = 3, | |
886 | .vs_nproc = 22, | |
887 | .vs_proc = nfsd_procedures3, | |
888 | .vs_dispatch = nfsd_dispatch, | |
889 | .vs_xdrsize = NFS3_SVC_XDRSIZE, | |
890 | }; |