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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/nfsd/nfs3proc.c | |
3 | * | |
4 | * Process version 3 NFS requests. | |
5 | * | |
6 | * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de> | |
7 | */ | |
8 | ||
9 | #include <linux/linkage.h> | |
10 | #include <linux/time.h> | |
11 | #include <linux/errno.h> | |
12 | #include <linux/fs.h> | |
13 | #include <linux/ext2_fs.h> | |
14 | #include <linux/stat.h> | |
15 | #include <linux/fcntl.h> | |
16 | #include <linux/net.h> | |
17 | #include <linux/in.h> | |
18 | #include <linux/unistd.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/major.h> | |
12214cb7 | 21 | #include <linux/magic.h> |
1da177e4 LT |
22 | |
23 | #include <linux/sunrpc/svc.h> | |
24 | #include <linux/nfsd/nfsd.h> | |
25 | #include <linux/nfsd/cache.h> | |
26 | #include <linux/nfsd/xdr3.h> | |
27 | #include <linux/nfs3.h> | |
28 | ||
29 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
30 | ||
31 | #define RETURN_STATUS(st) { resp->status = (st); return (st); } | |
32 | ||
33 | static int nfs3_ftypes[] = { | |
34 | 0, /* NF3NON */ | |
35 | S_IFREG, /* NF3REG */ | |
36 | S_IFDIR, /* NF3DIR */ | |
37 | S_IFBLK, /* NF3BLK */ | |
38 | S_IFCHR, /* NF3CHR */ | |
39 | S_IFLNK, /* NF3LNK */ | |
40 | S_IFSOCK, /* NF3SOCK */ | |
41 | S_IFIFO, /* NF3FIFO */ | |
42 | }; | |
43 | ||
44 | /* | |
45 | * NULL call. | |
46 | */ | |
7111c66e | 47 | static __be32 |
1da177e4 LT |
48 | nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
49 | { | |
50 | return nfs_ok; | |
51 | } | |
52 | ||
53 | /* | |
54 | * Get a file's attributes | |
55 | */ | |
7111c66e | 56 | static __be32 |
1da177e4 LT |
57 | nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp, |
58 | struct nfsd3_attrstat *resp) | |
59 | { | |
c4d987ba AV |
60 | int err; |
61 | __be32 nfserr; | |
1da177e4 LT |
62 | |
63 | dprintk("nfsd: GETATTR(3) %s\n", | |
a334de28 | 64 | SVCFH_fmt(&argp->fh)); |
1da177e4 LT |
65 | |
66 | fh_copy(&resp->fh, &argp->fh); | |
04716e66 BF |
67 | nfserr = fh_verify(rqstp, &resp->fh, 0, |
68 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
a334de28 DS |
69 | if (nfserr) |
70 | RETURN_STATUS(nfserr); | |
71 | ||
54775491 | 72 | err = vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
a334de28 DS |
73 | resp->fh.fh_dentry, &resp->stat); |
74 | nfserr = nfserrno(err); | |
75 | ||
1da177e4 LT |
76 | RETURN_STATUS(nfserr); |
77 | } | |
78 | ||
79 | /* | |
80 | * Set a file's attributes | |
81 | */ | |
7111c66e | 82 | static __be32 |
1da177e4 LT |
83 | nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp, |
84 | struct nfsd3_attrstat *resp) | |
85 | { | |
c4d987ba | 86 | __be32 nfserr; |
1da177e4 LT |
87 | |
88 | dprintk("nfsd: SETATTR(3) %s\n", | |
89 | SVCFH_fmt(&argp->fh)); | |
90 | ||
91 | fh_copy(&resp->fh, &argp->fh); | |
92 | nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs, | |
93 | argp->check_guard, argp->guardtime); | |
94 | RETURN_STATUS(nfserr); | |
95 | } | |
96 | ||
97 | /* | |
98 | * Look up a path name component | |
99 | */ | |
7111c66e | 100 | static __be32 |
1da177e4 LT |
101 | nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
102 | struct nfsd3_diropres *resp) | |
103 | { | |
c4d987ba | 104 | __be32 nfserr; |
1da177e4 LT |
105 | |
106 | dprintk("nfsd: LOOKUP(3) %s %.*s\n", | |
107 | SVCFH_fmt(&argp->fh), | |
108 | argp->len, | |
109 | argp->name); | |
110 | ||
111 | fh_copy(&resp->dirfh, &argp->fh); | |
112 | fh_init(&resp->fh, NFS3_FHSIZE); | |
113 | ||
114 | nfserr = nfsd_lookup(rqstp, &resp->dirfh, | |
115 | argp->name, | |
116 | argp->len, | |
117 | &resp->fh); | |
118 | RETURN_STATUS(nfserr); | |
119 | } | |
120 | ||
121 | /* | |
122 | * Check file access | |
123 | */ | |
7111c66e | 124 | static __be32 |
1da177e4 LT |
125 | nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp, |
126 | struct nfsd3_accessres *resp) | |
127 | { | |
c4d987ba | 128 | __be32 nfserr; |
1da177e4 LT |
129 | |
130 | dprintk("nfsd: ACCESS(3) %s 0x%x\n", | |
131 | SVCFH_fmt(&argp->fh), | |
132 | argp->access); | |
133 | ||
134 | fh_copy(&resp->fh, &argp->fh); | |
135 | resp->access = argp->access; | |
136 | nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL); | |
137 | RETURN_STATUS(nfserr); | |
138 | } | |
139 | ||
140 | /* | |
141 | * Read a symlink. | |
142 | */ | |
7111c66e | 143 | static __be32 |
1da177e4 LT |
144 | nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp, |
145 | struct nfsd3_readlinkres *resp) | |
146 | { | |
c4d987ba | 147 | __be32 nfserr; |
1da177e4 LT |
148 | |
149 | dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); | |
150 | ||
151 | /* Read the symlink. */ | |
152 | fh_copy(&resp->fh, &argp->fh); | |
153 | resp->len = NFS3_MAXPATHLEN; | |
154 | nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len); | |
155 | RETURN_STATUS(nfserr); | |
156 | } | |
157 | ||
158 | /* | |
159 | * Read a portion of a file. | |
160 | */ | |
7111c66e | 161 | static __be32 |
1da177e4 LT |
162 | nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp, |
163 | struct nfsd3_readres *resp) | |
164 | { | |
c4d987ba | 165 | __be32 nfserr; |
7adae489 | 166 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
167 | |
168 | dprintk("nfsd: READ(3) %s %lu bytes at %lu\n", | |
169 | SVCFH_fmt(&argp->fh), | |
170 | (unsigned long) argp->count, | |
171 | (unsigned long) argp->offset); | |
172 | ||
173 | /* Obtain buffer pointer for payload. | |
174 | * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof) | |
175 | * + 1 (xdr opaque byte count) = 26 | |
176 | */ | |
177 | ||
178 | resp->count = argp->count; | |
7adae489 GB |
179 | if (max_blocksize < resp->count) |
180 | resp->count = max_blocksize; | |
1da177e4 | 181 | |
cd123012 | 182 | svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); |
1da177e4 LT |
183 | |
184 | fh_copy(&resp->fh, &argp->fh); | |
185 | nfserr = nfsd_read(rqstp, &resp->fh, NULL, | |
186 | argp->offset, | |
3cc03b16 | 187 | rqstp->rq_vec, argp->vlen, |
1da177e4 LT |
188 | &resp->count); |
189 | if (nfserr == 0) { | |
190 | struct inode *inode = resp->fh.fh_dentry->d_inode; | |
191 | ||
192 | resp->eof = (argp->offset + resp->count) >= inode->i_size; | |
193 | } | |
194 | ||
195 | RETURN_STATUS(nfserr); | |
196 | } | |
197 | ||
198 | /* | |
199 | * Write data to a file | |
200 | */ | |
7111c66e | 201 | static __be32 |
1da177e4 LT |
202 | nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp, |
203 | struct nfsd3_writeres *resp) | |
204 | { | |
c4d987ba | 205 | __be32 nfserr; |
31dec253 | 206 | unsigned long cnt = argp->len; |
1da177e4 LT |
207 | |
208 | dprintk("nfsd: WRITE(3) %s %d bytes at %ld%s\n", | |
209 | SVCFH_fmt(&argp->fh), | |
210 | argp->len, | |
211 | (unsigned long) argp->offset, | |
212 | argp->stable? " stable" : ""); | |
213 | ||
214 | fh_copy(&resp->fh, &argp->fh); | |
215 | resp->committed = argp->stable; | |
216 | nfserr = nfsd_write(rqstp, &resp->fh, NULL, | |
217 | argp->offset, | |
3cc03b16 | 218 | rqstp->rq_vec, argp->vlen, |
31dec253 | 219 | &cnt, |
1da177e4 | 220 | &resp->committed); |
31dec253 | 221 | resp->count = cnt; |
1da177e4 LT |
222 | RETURN_STATUS(nfserr); |
223 | } | |
224 | ||
225 | /* | |
226 | * With NFSv3, CREATE processing is a lot easier than with NFSv2. | |
227 | * At least in theory; we'll see how it fares in practice when the | |
228 | * first reports about SunOS compatibility problems start to pour in... | |
229 | */ | |
7111c66e | 230 | static __be32 |
1da177e4 LT |
231 | nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, |
232 | struct nfsd3_diropres *resp) | |
233 | { | |
234 | svc_fh *dirfhp, *newfhp = NULL; | |
235 | struct iattr *attr; | |
c4d987ba | 236 | __be32 nfserr; |
1da177e4 LT |
237 | |
238 | dprintk("nfsd: CREATE(3) %s %.*s\n", | |
239 | SVCFH_fmt(&argp->fh), | |
240 | argp->len, | |
241 | argp->name); | |
242 | ||
243 | dirfhp = fh_copy(&resp->dirfh, &argp->fh); | |
244 | newfhp = fh_init(&resp->fh, NFS3_FHSIZE); | |
245 | attr = &argp->attrs; | |
246 | ||
247 | /* Get the directory inode */ | |
8837abca | 248 | nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE); |
1da177e4 LT |
249 | if (nfserr) |
250 | RETURN_STATUS(nfserr); | |
251 | ||
252 | /* Unfudge the mode bits */ | |
253 | attr->ia_mode &= ~S_IFMT; | |
254 | if (!(attr->ia_valid & ATTR_MODE)) { | |
255 | attr->ia_valid |= ATTR_MODE; | |
256 | attr->ia_mode = S_IFREG; | |
257 | } else { | |
258 | attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG; | |
259 | } | |
260 | ||
261 | /* Now create the file and set attributes */ | |
262 | nfserr = nfsd_create_v3(rqstp, dirfhp, argp->name, argp->len, | |
263 | attr, newfhp, | |
81ac95c5 | 264 | argp->createmode, argp->verf, NULL, NULL); |
1da177e4 LT |
265 | |
266 | RETURN_STATUS(nfserr); | |
267 | } | |
268 | ||
269 | /* | |
270 | * Make directory. This operation is not idempotent. | |
271 | */ | |
7111c66e | 272 | static __be32 |
1da177e4 LT |
273 | nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, |
274 | struct nfsd3_diropres *resp) | |
275 | { | |
c4d987ba | 276 | __be32 nfserr; |
1da177e4 LT |
277 | |
278 | dprintk("nfsd: MKDIR(3) %s %.*s\n", | |
279 | SVCFH_fmt(&argp->fh), | |
280 | argp->len, | |
281 | argp->name); | |
282 | ||
283 | argp->attrs.ia_valid &= ~ATTR_SIZE; | |
284 | fh_copy(&resp->dirfh, &argp->fh); | |
285 | fh_init(&resp->fh, NFS3_FHSIZE); | |
286 | nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, | |
287 | &argp->attrs, S_IFDIR, 0, &resp->fh); | |
288 | ||
289 | RETURN_STATUS(nfserr); | |
290 | } | |
291 | ||
7111c66e | 292 | static __be32 |
1da177e4 LT |
293 | nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp, |
294 | struct nfsd3_diropres *resp) | |
295 | { | |
c4d987ba | 296 | __be32 nfserr; |
1da177e4 LT |
297 | |
298 | dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n", | |
299 | SVCFH_fmt(&argp->ffh), | |
300 | argp->flen, argp->fname, | |
301 | argp->tlen, argp->tname); | |
302 | ||
303 | fh_copy(&resp->dirfh, &argp->ffh); | |
304 | fh_init(&resp->fh, NFS3_FHSIZE); | |
305 | nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen, | |
306 | argp->tname, argp->tlen, | |
307 | &resp->fh, &argp->attrs); | |
308 | RETURN_STATUS(nfserr); | |
309 | } | |
310 | ||
311 | /* | |
312 | * Make socket/fifo/device. | |
313 | */ | |
7111c66e | 314 | static __be32 |
1da177e4 LT |
315 | nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp, |
316 | struct nfsd3_diropres *resp) | |
317 | { | |
c4d987ba AV |
318 | __be32 nfserr; |
319 | int type; | |
1da177e4 LT |
320 | dev_t rdev = 0; |
321 | ||
322 | dprintk("nfsd: MKNOD(3) %s %.*s\n", | |
323 | SVCFH_fmt(&argp->fh), | |
324 | argp->len, | |
325 | argp->name); | |
326 | ||
327 | fh_copy(&resp->dirfh, &argp->fh); | |
328 | fh_init(&resp->fh, NFS3_FHSIZE); | |
329 | ||
330 | if (argp->ftype == 0 || argp->ftype >= NF3BAD) | |
331 | RETURN_STATUS(nfserr_inval); | |
332 | if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) { | |
333 | rdev = MKDEV(argp->major, argp->minor); | |
334 | if (MAJOR(rdev) != argp->major || | |
335 | MINOR(rdev) != argp->minor) | |
336 | RETURN_STATUS(nfserr_inval); | |
337 | } else | |
338 | if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) | |
339 | RETURN_STATUS(nfserr_inval); | |
340 | ||
341 | type = nfs3_ftypes[argp->ftype]; | |
342 | nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, | |
343 | &argp->attrs, type, rdev, &resp->fh); | |
344 | ||
345 | RETURN_STATUS(nfserr); | |
346 | } | |
347 | ||
348 | /* | |
349 | * Remove file/fifo/socket etc. | |
350 | */ | |
7111c66e | 351 | static __be32 |
1da177e4 LT |
352 | nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
353 | struct nfsd3_attrstat *resp) | |
354 | { | |
c4d987ba | 355 | __be32 nfserr; |
1da177e4 LT |
356 | |
357 | dprintk("nfsd: REMOVE(3) %s %.*s\n", | |
358 | SVCFH_fmt(&argp->fh), | |
359 | argp->len, | |
360 | argp->name); | |
361 | ||
362 | /* Unlink. -S_IFDIR means file must not be a directory */ | |
363 | fh_copy(&resp->fh, &argp->fh); | |
364 | nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len); | |
365 | RETURN_STATUS(nfserr); | |
366 | } | |
367 | ||
368 | /* | |
369 | * Remove a directory | |
370 | */ | |
7111c66e | 371 | static __be32 |
1da177e4 LT |
372 | nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp, |
373 | struct nfsd3_attrstat *resp) | |
374 | { | |
c4d987ba | 375 | __be32 nfserr; |
1da177e4 LT |
376 | |
377 | dprintk("nfsd: RMDIR(3) %s %.*s\n", | |
378 | SVCFH_fmt(&argp->fh), | |
379 | argp->len, | |
380 | argp->name); | |
381 | ||
382 | fh_copy(&resp->fh, &argp->fh); | |
383 | nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len); | |
384 | RETURN_STATUS(nfserr); | |
385 | } | |
386 | ||
7111c66e | 387 | static __be32 |
1da177e4 LT |
388 | nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp, |
389 | struct nfsd3_renameres *resp) | |
390 | { | |
c4d987ba | 391 | __be32 nfserr; |
1da177e4 LT |
392 | |
393 | dprintk("nfsd: RENAME(3) %s %.*s ->\n", | |
394 | SVCFH_fmt(&argp->ffh), | |
395 | argp->flen, | |
396 | argp->fname); | |
397 | dprintk("nfsd: -> %s %.*s\n", | |
398 | SVCFH_fmt(&argp->tfh), | |
399 | argp->tlen, | |
400 | argp->tname); | |
401 | ||
402 | fh_copy(&resp->ffh, &argp->ffh); | |
403 | fh_copy(&resp->tfh, &argp->tfh); | |
404 | nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, | |
405 | &resp->tfh, argp->tname, argp->tlen); | |
406 | RETURN_STATUS(nfserr); | |
407 | } | |
408 | ||
7111c66e | 409 | static __be32 |
1da177e4 LT |
410 | nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp, |
411 | struct nfsd3_linkres *resp) | |
412 | { | |
c4d987ba | 413 | __be32 nfserr; |
1da177e4 LT |
414 | |
415 | dprintk("nfsd: LINK(3) %s ->\n", | |
416 | SVCFH_fmt(&argp->ffh)); | |
417 | dprintk("nfsd: -> %s %.*s\n", | |
418 | SVCFH_fmt(&argp->tfh), | |
419 | argp->tlen, | |
420 | argp->tname); | |
421 | ||
422 | fh_copy(&resp->fh, &argp->ffh); | |
423 | fh_copy(&resp->tfh, &argp->tfh); | |
424 | nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, | |
425 | &resp->fh); | |
426 | RETURN_STATUS(nfserr); | |
427 | } | |
428 | ||
429 | /* | |
430 | * Read a portion of a directory. | |
431 | */ | |
7111c66e | 432 | static __be32 |
1da177e4 LT |
433 | nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, |
434 | struct nfsd3_readdirres *resp) | |
435 | { | |
c4d987ba AV |
436 | __be32 nfserr; |
437 | int count; | |
1da177e4 LT |
438 | |
439 | dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", | |
440 | SVCFH_fmt(&argp->fh), | |
441 | argp->count, (u32) argp->cookie); | |
442 | ||
443 | /* Make sure we've room for the NULL ptr & eof flag, and shrink to | |
444 | * client read size */ | |
445 | count = (argp->count >> 2) - 2; | |
446 | ||
447 | /* Read directory and encode entries on the fly */ | |
448 | fh_copy(&resp->fh, &argp->fh); | |
449 | ||
450 | resp->buflen = count; | |
451 | resp->common.err = nfs_ok; | |
452 | resp->buffer = argp->buffer; | |
453 | resp->rqstp = rqstp; | |
454 | nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie, | |
455 | &resp->common, nfs3svc_encode_entry); | |
456 | memcpy(resp->verf, argp->verf, 8); | |
457 | resp->count = resp->buffer - argp->buffer; | |
458 | if (resp->offset) | |
459 | xdr_encode_hyper(resp->offset, argp->cookie); | |
460 | ||
461 | RETURN_STATUS(nfserr); | |
462 | } | |
463 | ||
464 | /* | |
465 | * Read a portion of a directory, including file handles and attrs. | |
466 | * For now, we choose to ignore the dircount parameter. | |
467 | */ | |
7111c66e | 468 | static __be32 |
1da177e4 LT |
469 | nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, |
470 | struct nfsd3_readdirres *resp) | |
471 | { | |
c4d987ba AV |
472 | __be32 nfserr; |
473 | int count = 0; | |
1da177e4 LT |
474 | loff_t offset; |
475 | int i; | |
476 | caddr_t page_addr = NULL; | |
477 | ||
478 | dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", | |
479 | SVCFH_fmt(&argp->fh), | |
480 | argp->count, (u32) argp->cookie); | |
481 | ||
482 | /* Convert byte count to number of words (i.e. >> 2), | |
483 | * and reserve room for the NULL ptr & eof flag (-2 words) */ | |
484 | resp->count = (argp->count >> 2) - 2; | |
485 | ||
486 | /* Read directory and encode entries on the fly */ | |
487 | fh_copy(&resp->fh, &argp->fh); | |
488 | ||
489 | resp->common.err = nfs_ok; | |
490 | resp->buffer = argp->buffer; | |
491 | resp->buflen = resp->count; | |
492 | resp->rqstp = rqstp; | |
493 | offset = argp->cookie; | |
494 | nfserr = nfsd_readdir(rqstp, &resp->fh, | |
495 | &offset, | |
496 | &resp->common, | |
497 | nfs3svc_encode_entry_plus); | |
498 | memcpy(resp->verf, argp->verf, 8); | |
499 | for (i=1; i<rqstp->rq_resused ; i++) { | |
500 | page_addr = page_address(rqstp->rq_respages[i]); | |
501 | ||
502 | if (((caddr_t)resp->buffer >= page_addr) && | |
503 | ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { | |
504 | count += (caddr_t)resp->buffer - page_addr; | |
505 | break; | |
506 | } | |
507 | count += PAGE_SIZE; | |
508 | } | |
509 | resp->count = count >> 2; | |
510 | if (resp->offset) { | |
511 | if (unlikely(resp->offset1)) { | |
512 | /* we ended up with offset on a page boundary */ | |
513 | *resp->offset = htonl(offset >> 32); | |
514 | *resp->offset1 = htonl(offset & 0xffffffff); | |
515 | resp->offset1 = NULL; | |
516 | } else { | |
517 | xdr_encode_hyper(resp->offset, offset); | |
518 | } | |
519 | } | |
520 | ||
521 | RETURN_STATUS(nfserr); | |
522 | } | |
523 | ||
524 | /* | |
525 | * Get file system stats | |
526 | */ | |
7111c66e | 527 | static __be32 |
1da177e4 LT |
528 | nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
529 | struct nfsd3_fsstatres *resp) | |
530 | { | |
c4d987ba | 531 | __be32 nfserr; |
1da177e4 LT |
532 | |
533 | dprintk("nfsd: FSSTAT(3) %s\n", | |
534 | SVCFH_fmt(&argp->fh)); | |
535 | ||
04716e66 | 536 | nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0); |
1da177e4 LT |
537 | fh_put(&argp->fh); |
538 | RETURN_STATUS(nfserr); | |
539 | } | |
540 | ||
541 | /* | |
542 | * Get file system info | |
543 | */ | |
7111c66e | 544 | static __be32 |
1da177e4 LT |
545 | nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
546 | struct nfsd3_fsinfores *resp) | |
547 | { | |
c4d987ba | 548 | __be32 nfserr; |
7adae489 | 549 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
550 | |
551 | dprintk("nfsd: FSINFO(3) %s\n", | |
552 | SVCFH_fmt(&argp->fh)); | |
553 | ||
7adae489 GB |
554 | resp->f_rtmax = max_blocksize; |
555 | resp->f_rtpref = max_blocksize; | |
1da177e4 | 556 | resp->f_rtmult = PAGE_SIZE; |
7adae489 GB |
557 | resp->f_wtmax = max_blocksize; |
558 | resp->f_wtpref = max_blocksize; | |
1da177e4 LT |
559 | resp->f_wtmult = PAGE_SIZE; |
560 | resp->f_dtpref = PAGE_SIZE; | |
561 | resp->f_maxfilesize = ~(u32) 0; | |
562 | resp->f_properties = NFS3_FSF_DEFAULT; | |
563 | ||
04716e66 BF |
564 | nfserr = fh_verify(rqstp, &argp->fh, 0, |
565 | NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); | |
1da177e4 LT |
566 | |
567 | /* Check special features of the file system. May request | |
568 | * different read/write sizes for file systems known to have | |
569 | * problems with large blocks */ | |
570 | if (nfserr == 0) { | |
571 | struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb; | |
572 | ||
573 | /* Note that we don't care for remote fs's here */ | |
12214cb7 | 574 | if (sb->s_magic == MSDOS_SUPER_MAGIC) { |
1da177e4 LT |
575 | resp->f_properties = NFS3_FSF_BILLYBOY; |
576 | } | |
577 | resp->f_maxfilesize = sb->s_maxbytes; | |
578 | } | |
579 | ||
580 | fh_put(&argp->fh); | |
581 | RETURN_STATUS(nfserr); | |
582 | } | |
583 | ||
584 | /* | |
585 | * Get pathconf info for the specified file | |
586 | */ | |
7111c66e | 587 | static __be32 |
1da177e4 LT |
588 | nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
589 | struct nfsd3_pathconfres *resp) | |
590 | { | |
c4d987ba | 591 | __be32 nfserr; |
1da177e4 LT |
592 | |
593 | dprintk("nfsd: PATHCONF(3) %s\n", | |
594 | SVCFH_fmt(&argp->fh)); | |
595 | ||
596 | /* Set default pathconf */ | |
597 | resp->p_link_max = 255; /* at least */ | |
598 | resp->p_name_max = 255; /* at least */ | |
599 | resp->p_no_trunc = 0; | |
600 | resp->p_chown_restricted = 1; | |
601 | resp->p_case_insensitive = 0; | |
602 | resp->p_case_preserving = 1; | |
603 | ||
8837abca | 604 | nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
605 | |
606 | if (nfserr == 0) { | |
607 | struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb; | |
608 | ||
609 | /* Note that we don't care for remote fs's here */ | |
610 | switch (sb->s_magic) { | |
611 | case EXT2_SUPER_MAGIC: | |
612 | resp->p_link_max = EXT2_LINK_MAX; | |
613 | resp->p_name_max = EXT2_NAME_LEN; | |
614 | break; | |
12214cb7 | 615 | case MSDOS_SUPER_MAGIC: |
1da177e4 LT |
616 | resp->p_case_insensitive = 1; |
617 | resp->p_case_preserving = 0; | |
618 | break; | |
619 | } | |
620 | } | |
621 | ||
622 | fh_put(&argp->fh); | |
623 | RETURN_STATUS(nfserr); | |
624 | } | |
625 | ||
626 | ||
627 | /* | |
628 | * Commit a file (range) to stable storage. | |
629 | */ | |
7111c66e | 630 | static __be32 |
1da177e4 LT |
631 | nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp, |
632 | struct nfsd3_commitres *resp) | |
633 | { | |
c4d987ba | 634 | __be32 nfserr; |
1da177e4 LT |
635 | |
636 | dprintk("nfsd: COMMIT(3) %s %u@%Lu\n", | |
637 | SVCFH_fmt(&argp->fh), | |
638 | argp->count, | |
639 | (unsigned long long) argp->offset); | |
640 | ||
641 | if (argp->offset > NFS_OFFSET_MAX) | |
642 | RETURN_STATUS(nfserr_inval); | |
643 | ||
644 | fh_copy(&resp->fh, &argp->fh); | |
645 | nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count); | |
646 | ||
647 | RETURN_STATUS(nfserr); | |
648 | } | |
649 | ||
650 | ||
651 | /* | |
652 | * NFSv3 Server procedures. | |
653 | * Only the results of non-idempotent operations are cached. | |
654 | */ | |
655 | #define nfs3svc_decode_voidargs NULL | |
656 | #define nfs3svc_release_void NULL | |
657 | #define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle | |
658 | #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat | |
659 | #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat | |
660 | #define nfsd3_mkdirargs nfsd3_createargs | |
661 | #define nfsd3_readdirplusargs nfsd3_readdirargs | |
662 | #define nfsd3_fhandleargs nfsd_fhandle | |
663 | #define nfsd3_fhandleres nfsd3_attrstat | |
664 | #define nfsd3_attrstatres nfsd3_attrstat | |
665 | #define nfsd3_wccstatres nfsd3_attrstat | |
666 | #define nfsd3_createres nfsd3_diropres | |
667 | #define nfsd3_voidres nfsd3_voidargs | |
668 | struct nfsd3_voidargs { int dummy; }; | |
669 | ||
670 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
671 | { (svc_procfunc) nfsd3_proc_##name, \ | |
672 | (kxdrproc_t) nfs3svc_decode_##argt##args, \ | |
673 | (kxdrproc_t) nfs3svc_encode_##rest##res, \ | |
674 | (kxdrproc_t) nfs3svc_release_##relt, \ | |
675 | sizeof(struct nfsd3_##argt##args), \ | |
676 | sizeof(struct nfsd3_##rest##res), \ | |
677 | 0, \ | |
678 | cache, \ | |
679 | respsize, \ | |
680 | } | |
681 | ||
682 | #define ST 1 /* status*/ | |
683 | #define FH 17 /* filehandle with length */ | |
684 | #define AT 21 /* attributes */ | |
685 | #define pAT (1+AT) /* post attributes - conditional */ | |
686 | #define WC (7+pAT) /* WCC attributes */ | |
687 | ||
688 | static struct svc_procedure nfsd_procedures3[22] = { | |
689 | PROC(null, void, void, void, RC_NOCACHE, ST), | |
690 | PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT), | |
691 | PROC(setattr, sattr, wccstat, fhandle, RC_REPLBUFF, ST+WC), | |
692 | PROC(lookup, dirop, dirop, fhandle2, RC_NOCACHE, ST+FH+pAT+pAT), | |
693 | PROC(access, access, access, fhandle, RC_NOCACHE, ST+pAT+1), | |
694 | PROC(readlink, readlink, readlink, fhandle, RC_NOCACHE, ST+pAT+1+NFS3_MAXPATHLEN/4), | |
7775f4c8 | 695 | PROC(read, read, read, fhandle, RC_NOCACHE, ST+pAT+4+NFSSVC_MAXBLKSIZE/4), |
1da177e4 LT |
696 | PROC(write, write, write, fhandle, RC_REPLBUFF, ST+WC+4), |
697 | PROC(create, create, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), | |
698 | PROC(mkdir, mkdir, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), | |
699 | PROC(symlink, symlink, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), | |
700 | PROC(mknod, mknod, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), | |
701 | PROC(remove, dirop, wccstat, fhandle, RC_REPLBUFF, ST+WC), | |
702 | PROC(rmdir, dirop, wccstat, fhandle, RC_REPLBUFF, ST+WC), | |
703 | PROC(rename, rename, rename, fhandle2, RC_REPLBUFF, ST+WC+WC), | |
704 | PROC(link, link, link, fhandle2, RC_REPLBUFF, ST+pAT+WC), | |
705 | PROC(readdir, readdir, readdir, fhandle, RC_NOCACHE, 0), | |
706 | PROC(readdirplus,readdirplus, readdir, fhandle, RC_NOCACHE, 0), | |
707 | PROC(fsstat, fhandle, fsstat, void, RC_NOCACHE, ST+pAT+2*6+1), | |
708 | PROC(fsinfo, fhandle, fsinfo, void, RC_NOCACHE, ST+pAT+12), | |
709 | PROC(pathconf, fhandle, pathconf, void, RC_NOCACHE, ST+pAT+6), | |
710 | PROC(commit, commit, commit, fhandle, RC_NOCACHE, ST+WC+2), | |
711 | }; | |
712 | ||
713 | struct svc_version nfsd_version3 = { | |
714 | .vs_vers = 3, | |
715 | .vs_nproc = 22, | |
716 | .vs_proc = nfsd_procedures3, | |
717 | .vs_dispatch = nfsd_dispatch, | |
718 | .vs_xdrsize = NFS3_SVC_XDRSIZE, | |
719 | }; |