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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include "xfs.h" | |
34 | #include "xfs_fs.h" | |
35 | #include "xfs_inum.h" | |
36 | #include "xfs_log.h" | |
37 | #include "xfs_trans.h" | |
38 | #include "xfs_sb.h" | |
39 | #include "xfs_ag.h" | |
40 | #include "xfs_dir.h" | |
41 | #include "xfs_dir2.h" | |
42 | #include "xfs_alloc.h" | |
43 | #include "xfs_dmapi.h" | |
44 | #include "xfs_quota.h" | |
45 | #include "xfs_mount.h" | |
46 | #include "xfs_alloc_btree.h" | |
47 | #include "xfs_bmap_btree.h" | |
48 | #include "xfs_ialloc_btree.h" | |
49 | #include "xfs_btree.h" | |
50 | #include "xfs_ialloc.h" | |
51 | #include "xfs_attr_sf.h" | |
52 | #include "xfs_dir_sf.h" | |
53 | #include "xfs_dir2_sf.h" | |
54 | #include "xfs_dinode.h" | |
55 | #include "xfs_inode.h" | |
56 | #include "xfs_bmap.h" | |
57 | #include "xfs_bit.h" | |
58 | #include "xfs_rtalloc.h" | |
59 | #include "xfs_error.h" | |
60 | #include "xfs_itable.h" | |
61 | #include "xfs_rw.h" | |
62 | #include "xfs_acl.h" | |
63 | #include "xfs_cap.h" | |
64 | #include "xfs_mac.h" | |
65 | #include "xfs_attr.h" | |
66 | #include "xfs_buf_item.h" | |
67 | #include "xfs_utils.h" | |
68 | ||
69 | #include <linux/xattr.h> | |
70 | #include <linux/namei.h> | |
71 | ||
72 | ||
73 | /* | |
74 | * Pull the link count and size up from the xfs inode to the linux inode | |
75 | */ | |
76 | STATIC void | |
77 | validate_fields( | |
78 | struct inode *ip) | |
79 | { | |
80 | vnode_t *vp = LINVFS_GET_VP(ip); | |
81 | vattr_t va; | |
82 | int error; | |
83 | ||
84 | va.va_mask = XFS_AT_NLINK|XFS_AT_SIZE|XFS_AT_NBLOCKS; | |
85 | VOP_GETATTR(vp, &va, ATTR_LAZY, NULL, error); | |
86 | if (likely(!error)) { | |
87 | ip->i_nlink = va.va_nlink; | |
88 | ip->i_blocks = va.va_nblocks; | |
89 | ||
90 | /* we're under i_sem so i_size can't change under us */ | |
91 | if (i_size_read(ip) != va.va_size) | |
92 | i_size_write(ip, va.va_size); | |
93 | } | |
94 | } | |
95 | ||
96 | /* | |
97 | * Determine whether a process has a valid fs_struct (kernel daemons | |
98 | * like knfsd don't have an fs_struct). | |
99 | * | |
100 | * XXX(hch): nfsd is broken, better fix it instead. | |
101 | */ | |
102 | STATIC inline int | |
103 | has_fs_struct(struct task_struct *task) | |
104 | { | |
105 | return (task->fs != init_task.fs); | |
106 | } | |
107 | ||
108 | STATIC int | |
109 | linvfs_mknod( | |
110 | struct inode *dir, | |
111 | struct dentry *dentry, | |
112 | int mode, | |
113 | dev_t rdev) | |
114 | { | |
115 | struct inode *ip; | |
116 | vattr_t va; | |
117 | vnode_t *vp = NULL, *dvp = LINVFS_GET_VP(dir); | |
118 | xfs_acl_t *default_acl = NULL; | |
119 | attrexists_t test_default_acl = _ACL_DEFAULT_EXISTS; | |
120 | int error; | |
121 | ||
122 | /* | |
123 | * Irix uses Missed'em'V split, but doesn't want to see | |
124 | * the upper 5 bits of (14bit) major. | |
125 | */ | |
126 | if (!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff) | |
127 | return -EINVAL; | |
128 | ||
129 | if (test_default_acl && test_default_acl(dvp)) { | |
130 | if (!_ACL_ALLOC(default_acl)) | |
131 | return -ENOMEM; | |
132 | if (!_ACL_GET_DEFAULT(dvp, default_acl)) { | |
133 | _ACL_FREE(default_acl); | |
134 | default_acl = NULL; | |
135 | } | |
136 | } | |
137 | ||
138 | if (IS_POSIXACL(dir) && !default_acl && has_fs_struct(current)) | |
139 | mode &= ~current->fs->umask; | |
140 | ||
141 | memset(&va, 0, sizeof(va)); | |
142 | va.va_mask = XFS_AT_TYPE|XFS_AT_MODE; | |
1da177e4 LT |
143 | va.va_mode = mode; |
144 | ||
145 | switch (mode & S_IFMT) { | |
146 | case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: | |
147 | va.va_rdev = sysv_encode_dev(rdev); | |
148 | va.va_mask |= XFS_AT_RDEV; | |
149 | /*FALLTHROUGH*/ | |
150 | case S_IFREG: | |
151 | VOP_CREATE(dvp, dentry, &va, &vp, NULL, error); | |
152 | break; | |
153 | case S_IFDIR: | |
154 | VOP_MKDIR(dvp, dentry, &va, &vp, NULL, error); | |
155 | break; | |
156 | default: | |
157 | error = EINVAL; | |
158 | break; | |
159 | } | |
160 | ||
161 | if (default_acl) { | |
162 | if (!error) { | |
163 | error = _ACL_INHERIT(vp, &va, default_acl); | |
164 | if (!error) { | |
165 | VMODIFY(vp); | |
166 | } else { | |
167 | struct dentry teardown = {}; | |
168 | int err2; | |
169 | ||
170 | /* Oh, the horror. | |
171 | * If we can't add the ACL we must back out. | |
172 | * ENOSPC can hit here, among other things. | |
173 | */ | |
174 | teardown.d_inode = ip = LINVFS_GET_IP(vp); | |
175 | teardown.d_name = dentry->d_name; | |
176 | ||
177 | vn_mark_bad(vp); | |
178 | ||
179 | if (S_ISDIR(mode)) | |
180 | VOP_RMDIR(dvp, &teardown, NULL, err2); | |
181 | else | |
182 | VOP_REMOVE(dvp, &teardown, NULL, err2); | |
183 | VN_RELE(vp); | |
184 | } | |
185 | } | |
186 | _ACL_FREE(default_acl); | |
187 | } | |
188 | ||
189 | if (!error) { | |
190 | ASSERT(vp); | |
191 | ip = LINVFS_GET_IP(vp); | |
192 | ||
193 | if (S_ISCHR(mode) || S_ISBLK(mode)) | |
194 | ip->i_rdev = rdev; | |
195 | else if (S_ISDIR(mode)) | |
196 | validate_fields(ip); | |
197 | d_instantiate(dentry, ip); | |
198 | validate_fields(dir); | |
199 | } | |
200 | return -error; | |
201 | } | |
202 | ||
203 | STATIC int | |
204 | linvfs_create( | |
205 | struct inode *dir, | |
206 | struct dentry *dentry, | |
207 | int mode, | |
208 | struct nameidata *nd) | |
209 | { | |
210 | return linvfs_mknod(dir, dentry, mode, 0); | |
211 | } | |
212 | ||
213 | STATIC int | |
214 | linvfs_mkdir( | |
215 | struct inode *dir, | |
216 | struct dentry *dentry, | |
217 | int mode) | |
218 | { | |
219 | return linvfs_mknod(dir, dentry, mode|S_IFDIR, 0); | |
220 | } | |
221 | ||
222 | STATIC struct dentry * | |
223 | linvfs_lookup( | |
224 | struct inode *dir, | |
225 | struct dentry *dentry, | |
226 | struct nameidata *nd) | |
227 | { | |
228 | struct vnode *vp = LINVFS_GET_VP(dir), *cvp; | |
229 | int error; | |
230 | ||
231 | if (dentry->d_name.len >= MAXNAMELEN) | |
232 | return ERR_PTR(-ENAMETOOLONG); | |
233 | ||
234 | VOP_LOOKUP(vp, dentry, &cvp, 0, NULL, NULL, error); | |
235 | if (error) { | |
236 | if (unlikely(error != ENOENT)) | |
237 | return ERR_PTR(-error); | |
238 | d_add(dentry, NULL); | |
239 | return NULL; | |
240 | } | |
241 | ||
242 | return d_splice_alias(LINVFS_GET_IP(cvp), dentry); | |
243 | } | |
244 | ||
245 | STATIC int | |
246 | linvfs_link( | |
247 | struct dentry *old_dentry, | |
248 | struct inode *dir, | |
249 | struct dentry *dentry) | |
250 | { | |
251 | struct inode *ip; /* inode of guy being linked to */ | |
252 | vnode_t *tdvp; /* target directory for new name/link */ | |
253 | vnode_t *vp; /* vp of name being linked */ | |
254 | int error; | |
255 | ||
256 | ip = old_dentry->d_inode; /* inode being linked to */ | |
257 | if (S_ISDIR(ip->i_mode)) | |
258 | return -EPERM; | |
259 | ||
260 | tdvp = LINVFS_GET_VP(dir); | |
261 | vp = LINVFS_GET_VP(ip); | |
262 | ||
263 | VOP_LINK(tdvp, vp, dentry, NULL, error); | |
264 | if (!error) { | |
265 | VMODIFY(tdvp); | |
266 | VN_HOLD(vp); | |
267 | validate_fields(ip); | |
268 | d_instantiate(dentry, ip); | |
269 | } | |
270 | return -error; | |
271 | } | |
272 | ||
273 | STATIC int | |
274 | linvfs_unlink( | |
275 | struct inode *dir, | |
276 | struct dentry *dentry) | |
277 | { | |
278 | struct inode *inode; | |
279 | vnode_t *dvp; /* directory containing name to remove */ | |
280 | int error; | |
281 | ||
282 | inode = dentry->d_inode; | |
283 | dvp = LINVFS_GET_VP(dir); | |
284 | ||
285 | VOP_REMOVE(dvp, dentry, NULL, error); | |
286 | if (!error) { | |
287 | validate_fields(dir); /* For size only */ | |
288 | validate_fields(inode); | |
289 | } | |
290 | ||
291 | return -error; | |
292 | } | |
293 | ||
294 | STATIC int | |
295 | linvfs_symlink( | |
296 | struct inode *dir, | |
297 | struct dentry *dentry, | |
298 | const char *symname) | |
299 | { | |
300 | struct inode *ip; | |
301 | vattr_t va; | |
302 | vnode_t *dvp; /* directory containing name of symlink */ | |
303 | vnode_t *cvp; /* used to lookup symlink to put in dentry */ | |
304 | int error; | |
305 | ||
306 | dvp = LINVFS_GET_VP(dir); | |
307 | cvp = NULL; | |
308 | ||
309 | memset(&va, 0, sizeof(va)); | |
0432dab2 CH |
310 | va.va_mode = S_IFLNK | |
311 | (irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO); | |
1da177e4 LT |
312 | va.va_mask = XFS_AT_TYPE|XFS_AT_MODE; |
313 | ||
314 | error = 0; | |
315 | VOP_SYMLINK(dvp, dentry, &va, (char *)symname, &cvp, NULL, error); | |
316 | if (!error && cvp) { | |
1da177e4 LT |
317 | ip = LINVFS_GET_IP(cvp); |
318 | d_instantiate(dentry, ip); | |
319 | validate_fields(dir); | |
320 | validate_fields(ip); /* size needs update */ | |
321 | } | |
322 | return -error; | |
323 | } | |
324 | ||
325 | STATIC int | |
326 | linvfs_rmdir( | |
327 | struct inode *dir, | |
328 | struct dentry *dentry) | |
329 | { | |
330 | struct inode *inode = dentry->d_inode; | |
331 | vnode_t *dvp = LINVFS_GET_VP(dir); | |
332 | int error; | |
333 | ||
334 | VOP_RMDIR(dvp, dentry, NULL, error); | |
335 | if (!error) { | |
336 | validate_fields(inode); | |
337 | validate_fields(dir); | |
338 | } | |
339 | return -error; | |
340 | } | |
341 | ||
342 | STATIC int | |
343 | linvfs_rename( | |
344 | struct inode *odir, | |
345 | struct dentry *odentry, | |
346 | struct inode *ndir, | |
347 | struct dentry *ndentry) | |
348 | { | |
349 | struct inode *new_inode = ndentry->d_inode; | |
350 | vnode_t *fvp; /* from directory */ | |
351 | vnode_t *tvp; /* target directory */ | |
352 | int error; | |
353 | ||
354 | fvp = LINVFS_GET_VP(odir); | |
355 | tvp = LINVFS_GET_VP(ndir); | |
356 | ||
357 | VOP_RENAME(fvp, odentry, tvp, ndentry, NULL, error); | |
358 | if (error) | |
359 | return -error; | |
360 | ||
361 | if (new_inode) | |
362 | validate_fields(new_inode); | |
363 | ||
364 | validate_fields(odir); | |
365 | if (ndir != odir) | |
366 | validate_fields(ndir); | |
367 | return 0; | |
368 | } | |
369 | ||
370 | /* | |
371 | * careful here - this function can get called recursively, so | |
372 | * we need to be very careful about how much stack we use. | |
373 | * uio is kmalloced for this reason... | |
374 | */ | |
008b150a | 375 | STATIC void * |
1da177e4 LT |
376 | linvfs_follow_link( |
377 | struct dentry *dentry, | |
378 | struct nameidata *nd) | |
379 | { | |
380 | vnode_t *vp; | |
381 | uio_t *uio; | |
382 | iovec_t iov; | |
383 | int error; | |
384 | char *link; | |
385 | ||
386 | ASSERT(dentry); | |
387 | ASSERT(nd); | |
388 | ||
389 | link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL); | |
390 | if (!link) { | |
391 | nd_set_link(nd, ERR_PTR(-ENOMEM)); | |
008b150a | 392 | return NULL; |
1da177e4 LT |
393 | } |
394 | ||
395 | uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL); | |
396 | if (!uio) { | |
397 | kfree(link); | |
398 | nd_set_link(nd, ERR_PTR(-ENOMEM)); | |
008b150a | 399 | return NULL; |
1da177e4 LT |
400 | } |
401 | ||
402 | vp = LINVFS_GET_VP(dentry->d_inode); | |
403 | ||
404 | iov.iov_base = link; | |
405 | iov.iov_len = MAXNAMELEN; | |
406 | ||
407 | uio->uio_iov = &iov; | |
408 | uio->uio_offset = 0; | |
409 | uio->uio_segflg = UIO_SYSSPACE; | |
410 | uio->uio_resid = MAXNAMELEN; | |
411 | uio->uio_iovcnt = 1; | |
412 | ||
413 | VOP_READLINK(vp, uio, 0, NULL, error); | |
414 | if (error) { | |
415 | kfree(link); | |
416 | link = ERR_PTR(-error); | |
417 | } else { | |
418 | link[MAXNAMELEN - uio->uio_resid] = '\0'; | |
419 | } | |
420 | kfree(uio); | |
421 | ||
422 | nd_set_link(nd, link); | |
008b150a | 423 | return NULL; |
1da177e4 LT |
424 | } |
425 | ||
008b150a | 426 | static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) |
1da177e4 LT |
427 | { |
428 | char *s = nd_get_link(nd); | |
429 | if (!IS_ERR(s)) | |
430 | kfree(s); | |
431 | } | |
432 | ||
433 | #ifdef CONFIG_XFS_POSIX_ACL | |
434 | STATIC int | |
435 | linvfs_permission( | |
436 | struct inode *inode, | |
437 | int mode, | |
438 | struct nameidata *nd) | |
439 | { | |
440 | vnode_t *vp = LINVFS_GET_VP(inode); | |
441 | int error; | |
442 | ||
443 | mode <<= 6; /* convert from linux to vnode access bits */ | |
444 | VOP_ACCESS(vp, mode, NULL, error); | |
445 | return -error; | |
446 | } | |
447 | #else | |
448 | #define linvfs_permission NULL | |
449 | #endif | |
450 | ||
451 | STATIC int | |
452 | linvfs_getattr( | |
453 | struct vfsmount *mnt, | |
454 | struct dentry *dentry, | |
455 | struct kstat *stat) | |
456 | { | |
457 | struct inode *inode = dentry->d_inode; | |
458 | vnode_t *vp = LINVFS_GET_VP(inode); | |
459 | int error = 0; | |
460 | ||
461 | if (unlikely(vp->v_flag & VMODIFIED)) | |
462 | error = vn_revalidate(vp); | |
463 | if (!error) | |
464 | generic_fillattr(inode, stat); | |
465 | return 0; | |
466 | } | |
467 | ||
468 | STATIC int | |
469 | linvfs_setattr( | |
470 | struct dentry *dentry, | |
471 | struct iattr *attr) | |
472 | { | |
473 | struct inode *inode = dentry->d_inode; | |
474 | unsigned int ia_valid = attr->ia_valid; | |
475 | vnode_t *vp = LINVFS_GET_VP(inode); | |
476 | vattr_t vattr; | |
477 | int flags = 0; | |
478 | int error; | |
479 | ||
480 | memset(&vattr, 0, sizeof(vattr_t)); | |
481 | if (ia_valid & ATTR_UID) { | |
482 | vattr.va_mask |= XFS_AT_UID; | |
483 | vattr.va_uid = attr->ia_uid; | |
484 | } | |
485 | if (ia_valid & ATTR_GID) { | |
486 | vattr.va_mask |= XFS_AT_GID; | |
487 | vattr.va_gid = attr->ia_gid; | |
488 | } | |
489 | if (ia_valid & ATTR_SIZE) { | |
490 | vattr.va_mask |= XFS_AT_SIZE; | |
491 | vattr.va_size = attr->ia_size; | |
492 | } | |
493 | if (ia_valid & ATTR_ATIME) { | |
494 | vattr.va_mask |= XFS_AT_ATIME; | |
495 | vattr.va_atime = attr->ia_atime; | |
496 | } | |
497 | if (ia_valid & ATTR_MTIME) { | |
498 | vattr.va_mask |= XFS_AT_MTIME; | |
499 | vattr.va_mtime = attr->ia_mtime; | |
500 | } | |
501 | if (ia_valid & ATTR_CTIME) { | |
502 | vattr.va_mask |= XFS_AT_CTIME; | |
503 | vattr.va_ctime = attr->ia_ctime; | |
504 | } | |
505 | if (ia_valid & ATTR_MODE) { | |
506 | vattr.va_mask |= XFS_AT_MODE; | |
507 | vattr.va_mode = attr->ia_mode; | |
508 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
509 | inode->i_mode &= ~S_ISGID; | |
510 | } | |
511 | ||
512 | if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) | |
513 | flags |= ATTR_UTIME; | |
514 | #ifdef ATTR_NO_BLOCK | |
515 | if ((ia_valid & ATTR_NO_BLOCK)) | |
516 | flags |= ATTR_NONBLOCK; | |
517 | #endif | |
518 | ||
519 | VOP_SETATTR(vp, &vattr, flags, NULL, error); | |
520 | if (error) | |
521 | return -error; | |
522 | vn_revalidate(vp); | |
523 | return error; | |
524 | } | |
525 | ||
526 | STATIC void | |
527 | linvfs_truncate( | |
528 | struct inode *inode) | |
529 | { | |
530 | block_truncate_page(inode->i_mapping, inode->i_size, linvfs_get_block); | |
531 | } | |
532 | ||
533 | STATIC int | |
534 | linvfs_setxattr( | |
535 | struct dentry *dentry, | |
536 | const char *name, | |
537 | const void *data, | |
538 | size_t size, | |
539 | int flags) | |
540 | { | |
541 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
542 | char *attr = (char *)name; | |
543 | attrnames_t *namesp; | |
544 | int xflags = 0; | |
545 | int error; | |
546 | ||
547 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); | |
548 | if (!namesp) | |
549 | return -EOPNOTSUPP; | |
550 | attr += namesp->attr_namelen; | |
551 | error = namesp->attr_capable(vp, NULL); | |
552 | if (error) | |
553 | return error; | |
554 | ||
555 | /* Convert Linux syscall to XFS internal ATTR flags */ | |
556 | if (flags & XATTR_CREATE) | |
557 | xflags |= ATTR_CREATE; | |
558 | if (flags & XATTR_REPLACE) | |
559 | xflags |= ATTR_REPLACE; | |
560 | xflags |= namesp->attr_flag; | |
561 | return namesp->attr_set(vp, attr, (void *)data, size, xflags); | |
562 | } | |
563 | ||
564 | STATIC ssize_t | |
565 | linvfs_getxattr( | |
566 | struct dentry *dentry, | |
567 | const char *name, | |
568 | void *data, | |
569 | size_t size) | |
570 | { | |
571 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
572 | char *attr = (char *)name; | |
573 | attrnames_t *namesp; | |
574 | int xflags = 0; | |
575 | ssize_t error; | |
576 | ||
577 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); | |
578 | if (!namesp) | |
579 | return -EOPNOTSUPP; | |
580 | attr += namesp->attr_namelen; | |
581 | error = namesp->attr_capable(vp, NULL); | |
582 | if (error) | |
583 | return error; | |
584 | ||
585 | /* Convert Linux syscall to XFS internal ATTR flags */ | |
586 | if (!size) { | |
587 | xflags |= ATTR_KERNOVAL; | |
588 | data = NULL; | |
589 | } | |
590 | xflags |= namesp->attr_flag; | |
591 | return namesp->attr_get(vp, attr, (void *)data, size, xflags); | |
592 | } | |
593 | ||
594 | STATIC ssize_t | |
595 | linvfs_listxattr( | |
596 | struct dentry *dentry, | |
597 | char *data, | |
598 | size_t size) | |
599 | { | |
600 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
601 | int error, xflags = ATTR_KERNAMELS; | |
602 | ssize_t result; | |
603 | ||
604 | if (!size) | |
605 | xflags |= ATTR_KERNOVAL; | |
606 | xflags |= capable(CAP_SYS_ADMIN) ? ATTR_KERNFULLS : ATTR_KERNORMALS; | |
607 | ||
608 | error = attr_generic_list(vp, data, size, xflags, &result); | |
609 | if (error < 0) | |
610 | return error; | |
611 | return result; | |
612 | } | |
613 | ||
614 | STATIC int | |
615 | linvfs_removexattr( | |
616 | struct dentry *dentry, | |
617 | const char *name) | |
618 | { | |
619 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
620 | char *attr = (char *)name; | |
621 | attrnames_t *namesp; | |
622 | int xflags = 0; | |
623 | int error; | |
624 | ||
625 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); | |
626 | if (!namesp) | |
627 | return -EOPNOTSUPP; | |
628 | attr += namesp->attr_namelen; | |
629 | error = namesp->attr_capable(vp, NULL); | |
630 | if (error) | |
631 | return error; | |
632 | xflags |= namesp->attr_flag; | |
633 | return namesp->attr_remove(vp, attr, xflags); | |
634 | } | |
635 | ||
636 | ||
637 | struct inode_operations linvfs_file_inode_operations = { | |
638 | .permission = linvfs_permission, | |
639 | .truncate = linvfs_truncate, | |
640 | .getattr = linvfs_getattr, | |
641 | .setattr = linvfs_setattr, | |
642 | .setxattr = linvfs_setxattr, | |
643 | .getxattr = linvfs_getxattr, | |
644 | .listxattr = linvfs_listxattr, | |
645 | .removexattr = linvfs_removexattr, | |
646 | }; | |
647 | ||
648 | struct inode_operations linvfs_dir_inode_operations = { | |
649 | .create = linvfs_create, | |
650 | .lookup = linvfs_lookup, | |
651 | .link = linvfs_link, | |
652 | .unlink = linvfs_unlink, | |
653 | .symlink = linvfs_symlink, | |
654 | .mkdir = linvfs_mkdir, | |
655 | .rmdir = linvfs_rmdir, | |
656 | .mknod = linvfs_mknod, | |
657 | .rename = linvfs_rename, | |
658 | .permission = linvfs_permission, | |
659 | .getattr = linvfs_getattr, | |
660 | .setattr = linvfs_setattr, | |
661 | .setxattr = linvfs_setxattr, | |
662 | .getxattr = linvfs_getxattr, | |
663 | .listxattr = linvfs_listxattr, | |
664 | .removexattr = linvfs_removexattr, | |
665 | }; | |
666 | ||
667 | struct inode_operations linvfs_symlink_inode_operations = { | |
668 | .readlink = generic_readlink, | |
669 | .follow_link = linvfs_follow_link, | |
670 | .put_link = linvfs_put_link, | |
671 | .permission = linvfs_permission, | |
672 | .getattr = linvfs_getattr, | |
673 | .setattr = linvfs_setattr, | |
674 | .setxattr = linvfs_setxattr, | |
675 | .getxattr = linvfs_getxattr, | |
676 | .listxattr = linvfs_listxattr, | |
677 | .removexattr = linvfs_removexattr, | |
678 | }; |