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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; | |
143 | va.va_type = IFTOVT(mode); | |
144 | va.va_mode = mode; | |
145 | ||
146 | switch (mode & S_IFMT) { | |
147 | case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: | |
148 | va.va_rdev = sysv_encode_dev(rdev); | |
149 | va.va_mask |= XFS_AT_RDEV; | |
150 | /*FALLTHROUGH*/ | |
151 | case S_IFREG: | |
152 | VOP_CREATE(dvp, dentry, &va, &vp, NULL, error); | |
153 | break; | |
154 | case S_IFDIR: | |
155 | VOP_MKDIR(dvp, dentry, &va, &vp, NULL, error); | |
156 | break; | |
157 | default: | |
158 | error = EINVAL; | |
159 | break; | |
160 | } | |
161 | ||
162 | if (default_acl) { | |
163 | if (!error) { | |
164 | error = _ACL_INHERIT(vp, &va, default_acl); | |
165 | if (!error) { | |
166 | VMODIFY(vp); | |
167 | } else { | |
168 | struct dentry teardown = {}; | |
169 | int err2; | |
170 | ||
171 | /* Oh, the horror. | |
172 | * If we can't add the ACL we must back out. | |
173 | * ENOSPC can hit here, among other things. | |
174 | */ | |
175 | teardown.d_inode = ip = LINVFS_GET_IP(vp); | |
176 | teardown.d_name = dentry->d_name; | |
177 | ||
178 | vn_mark_bad(vp); | |
179 | ||
180 | if (S_ISDIR(mode)) | |
181 | VOP_RMDIR(dvp, &teardown, NULL, err2); | |
182 | else | |
183 | VOP_REMOVE(dvp, &teardown, NULL, err2); | |
184 | VN_RELE(vp); | |
185 | } | |
186 | } | |
187 | _ACL_FREE(default_acl); | |
188 | } | |
189 | ||
190 | if (!error) { | |
191 | ASSERT(vp); | |
192 | ip = LINVFS_GET_IP(vp); | |
193 | ||
194 | if (S_ISCHR(mode) || S_ISBLK(mode)) | |
195 | ip->i_rdev = rdev; | |
196 | else if (S_ISDIR(mode)) | |
197 | validate_fields(ip); | |
198 | d_instantiate(dentry, ip); | |
199 | validate_fields(dir); | |
200 | } | |
201 | return -error; | |
202 | } | |
203 | ||
204 | STATIC int | |
205 | linvfs_create( | |
206 | struct inode *dir, | |
207 | struct dentry *dentry, | |
208 | int mode, | |
209 | struct nameidata *nd) | |
210 | { | |
211 | return linvfs_mknod(dir, dentry, mode, 0); | |
212 | } | |
213 | ||
214 | STATIC int | |
215 | linvfs_mkdir( | |
216 | struct inode *dir, | |
217 | struct dentry *dentry, | |
218 | int mode) | |
219 | { | |
220 | return linvfs_mknod(dir, dentry, mode|S_IFDIR, 0); | |
221 | } | |
222 | ||
223 | STATIC struct dentry * | |
224 | linvfs_lookup( | |
225 | struct inode *dir, | |
226 | struct dentry *dentry, | |
227 | struct nameidata *nd) | |
228 | { | |
229 | struct vnode *vp = LINVFS_GET_VP(dir), *cvp; | |
230 | int error; | |
231 | ||
232 | if (dentry->d_name.len >= MAXNAMELEN) | |
233 | return ERR_PTR(-ENAMETOOLONG); | |
234 | ||
235 | VOP_LOOKUP(vp, dentry, &cvp, 0, NULL, NULL, error); | |
236 | if (error) { | |
237 | if (unlikely(error != ENOENT)) | |
238 | return ERR_PTR(-error); | |
239 | d_add(dentry, NULL); | |
240 | return NULL; | |
241 | } | |
242 | ||
243 | return d_splice_alias(LINVFS_GET_IP(cvp), dentry); | |
244 | } | |
245 | ||
246 | STATIC int | |
247 | linvfs_link( | |
248 | struct dentry *old_dentry, | |
249 | struct inode *dir, | |
250 | struct dentry *dentry) | |
251 | { | |
252 | struct inode *ip; /* inode of guy being linked to */ | |
253 | vnode_t *tdvp; /* target directory for new name/link */ | |
254 | vnode_t *vp; /* vp of name being linked */ | |
255 | int error; | |
256 | ||
257 | ip = old_dentry->d_inode; /* inode being linked to */ | |
258 | if (S_ISDIR(ip->i_mode)) | |
259 | return -EPERM; | |
260 | ||
261 | tdvp = LINVFS_GET_VP(dir); | |
262 | vp = LINVFS_GET_VP(ip); | |
263 | ||
264 | VOP_LINK(tdvp, vp, dentry, NULL, error); | |
265 | if (!error) { | |
266 | VMODIFY(tdvp); | |
267 | VN_HOLD(vp); | |
268 | validate_fields(ip); | |
269 | d_instantiate(dentry, ip); | |
270 | } | |
271 | return -error; | |
272 | } | |
273 | ||
274 | STATIC int | |
275 | linvfs_unlink( | |
276 | struct inode *dir, | |
277 | struct dentry *dentry) | |
278 | { | |
279 | struct inode *inode; | |
280 | vnode_t *dvp; /* directory containing name to remove */ | |
281 | int error; | |
282 | ||
283 | inode = dentry->d_inode; | |
284 | dvp = LINVFS_GET_VP(dir); | |
285 | ||
286 | VOP_REMOVE(dvp, dentry, NULL, error); | |
287 | if (!error) { | |
288 | validate_fields(dir); /* For size only */ | |
289 | validate_fields(inode); | |
290 | } | |
291 | ||
292 | return -error; | |
293 | } | |
294 | ||
295 | STATIC int | |
296 | linvfs_symlink( | |
297 | struct inode *dir, | |
298 | struct dentry *dentry, | |
299 | const char *symname) | |
300 | { | |
301 | struct inode *ip; | |
302 | vattr_t va; | |
303 | vnode_t *dvp; /* directory containing name of symlink */ | |
304 | vnode_t *cvp; /* used to lookup symlink to put in dentry */ | |
305 | int error; | |
306 | ||
307 | dvp = LINVFS_GET_VP(dir); | |
308 | cvp = NULL; | |
309 | ||
310 | memset(&va, 0, sizeof(va)); | |
311 | va.va_type = VLNK; | |
312 | va.va_mode = irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO; | |
313 | va.va_mask = XFS_AT_TYPE|XFS_AT_MODE; | |
314 | ||
315 | error = 0; | |
316 | VOP_SYMLINK(dvp, dentry, &va, (char *)symname, &cvp, NULL, error); | |
317 | if (!error && cvp) { | |
318 | ASSERT(cvp->v_type == VLNK); | |
319 | ip = LINVFS_GET_IP(cvp); | |
320 | d_instantiate(dentry, ip); | |
321 | validate_fields(dir); | |
322 | validate_fields(ip); /* size needs update */ | |
323 | } | |
324 | return -error; | |
325 | } | |
326 | ||
327 | STATIC int | |
328 | linvfs_rmdir( | |
329 | struct inode *dir, | |
330 | struct dentry *dentry) | |
331 | { | |
332 | struct inode *inode = dentry->d_inode; | |
333 | vnode_t *dvp = LINVFS_GET_VP(dir); | |
334 | int error; | |
335 | ||
336 | VOP_RMDIR(dvp, dentry, NULL, error); | |
337 | if (!error) { | |
338 | validate_fields(inode); | |
339 | validate_fields(dir); | |
340 | } | |
341 | return -error; | |
342 | } | |
343 | ||
344 | STATIC int | |
345 | linvfs_rename( | |
346 | struct inode *odir, | |
347 | struct dentry *odentry, | |
348 | struct inode *ndir, | |
349 | struct dentry *ndentry) | |
350 | { | |
351 | struct inode *new_inode = ndentry->d_inode; | |
352 | vnode_t *fvp; /* from directory */ | |
353 | vnode_t *tvp; /* target directory */ | |
354 | int error; | |
355 | ||
356 | fvp = LINVFS_GET_VP(odir); | |
357 | tvp = LINVFS_GET_VP(ndir); | |
358 | ||
359 | VOP_RENAME(fvp, odentry, tvp, ndentry, NULL, error); | |
360 | if (error) | |
361 | return -error; | |
362 | ||
363 | if (new_inode) | |
364 | validate_fields(new_inode); | |
365 | ||
366 | validate_fields(odir); | |
367 | if (ndir != odir) | |
368 | validate_fields(ndir); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | /* | |
373 | * careful here - this function can get called recursively, so | |
374 | * we need to be very careful about how much stack we use. | |
375 | * uio is kmalloced for this reason... | |
376 | */ | |
377 | STATIC int | |
378 | linvfs_follow_link( | |
379 | struct dentry *dentry, | |
380 | struct nameidata *nd) | |
381 | { | |
382 | vnode_t *vp; | |
383 | uio_t *uio; | |
384 | iovec_t iov; | |
385 | int error; | |
386 | char *link; | |
387 | ||
388 | ASSERT(dentry); | |
389 | ASSERT(nd); | |
390 | ||
391 | link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL); | |
392 | if (!link) { | |
393 | nd_set_link(nd, ERR_PTR(-ENOMEM)); | |
394 | return 0; | |
395 | } | |
396 | ||
397 | uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL); | |
398 | if (!uio) { | |
399 | kfree(link); | |
400 | nd_set_link(nd, ERR_PTR(-ENOMEM)); | |
401 | return 0; | |
402 | } | |
403 | ||
404 | vp = LINVFS_GET_VP(dentry->d_inode); | |
405 | ||
406 | iov.iov_base = link; | |
407 | iov.iov_len = MAXNAMELEN; | |
408 | ||
409 | uio->uio_iov = &iov; | |
410 | uio->uio_offset = 0; | |
411 | uio->uio_segflg = UIO_SYSSPACE; | |
412 | uio->uio_resid = MAXNAMELEN; | |
413 | uio->uio_iovcnt = 1; | |
414 | ||
415 | VOP_READLINK(vp, uio, 0, NULL, error); | |
416 | if (error) { | |
417 | kfree(link); | |
418 | link = ERR_PTR(-error); | |
419 | } else { | |
420 | link[MAXNAMELEN - uio->uio_resid] = '\0'; | |
421 | } | |
422 | kfree(uio); | |
423 | ||
424 | nd_set_link(nd, link); | |
425 | return 0; | |
426 | } | |
427 | ||
428 | static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd) | |
429 | { | |
430 | char *s = nd_get_link(nd); | |
431 | if (!IS_ERR(s)) | |
432 | kfree(s); | |
433 | } | |
434 | ||
435 | #ifdef CONFIG_XFS_POSIX_ACL | |
436 | STATIC int | |
437 | linvfs_permission( | |
438 | struct inode *inode, | |
439 | int mode, | |
440 | struct nameidata *nd) | |
441 | { | |
442 | vnode_t *vp = LINVFS_GET_VP(inode); | |
443 | int error; | |
444 | ||
445 | mode <<= 6; /* convert from linux to vnode access bits */ | |
446 | VOP_ACCESS(vp, mode, NULL, error); | |
447 | return -error; | |
448 | } | |
449 | #else | |
450 | #define linvfs_permission NULL | |
451 | #endif | |
452 | ||
453 | STATIC int | |
454 | linvfs_getattr( | |
455 | struct vfsmount *mnt, | |
456 | struct dentry *dentry, | |
457 | struct kstat *stat) | |
458 | { | |
459 | struct inode *inode = dentry->d_inode; | |
460 | vnode_t *vp = LINVFS_GET_VP(inode); | |
461 | int error = 0; | |
462 | ||
463 | if (unlikely(vp->v_flag & VMODIFIED)) | |
464 | error = vn_revalidate(vp); | |
465 | if (!error) | |
466 | generic_fillattr(inode, stat); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | STATIC int | |
471 | linvfs_setattr( | |
472 | struct dentry *dentry, | |
473 | struct iattr *attr) | |
474 | { | |
475 | struct inode *inode = dentry->d_inode; | |
476 | unsigned int ia_valid = attr->ia_valid; | |
477 | vnode_t *vp = LINVFS_GET_VP(inode); | |
478 | vattr_t vattr; | |
479 | int flags = 0; | |
480 | int error; | |
481 | ||
482 | memset(&vattr, 0, sizeof(vattr_t)); | |
483 | if (ia_valid & ATTR_UID) { | |
484 | vattr.va_mask |= XFS_AT_UID; | |
485 | vattr.va_uid = attr->ia_uid; | |
486 | } | |
487 | if (ia_valid & ATTR_GID) { | |
488 | vattr.va_mask |= XFS_AT_GID; | |
489 | vattr.va_gid = attr->ia_gid; | |
490 | } | |
491 | if (ia_valid & ATTR_SIZE) { | |
492 | vattr.va_mask |= XFS_AT_SIZE; | |
493 | vattr.va_size = attr->ia_size; | |
494 | } | |
495 | if (ia_valid & ATTR_ATIME) { | |
496 | vattr.va_mask |= XFS_AT_ATIME; | |
497 | vattr.va_atime = attr->ia_atime; | |
498 | } | |
499 | if (ia_valid & ATTR_MTIME) { | |
500 | vattr.va_mask |= XFS_AT_MTIME; | |
501 | vattr.va_mtime = attr->ia_mtime; | |
502 | } | |
503 | if (ia_valid & ATTR_CTIME) { | |
504 | vattr.va_mask |= XFS_AT_CTIME; | |
505 | vattr.va_ctime = attr->ia_ctime; | |
506 | } | |
507 | if (ia_valid & ATTR_MODE) { | |
508 | vattr.va_mask |= XFS_AT_MODE; | |
509 | vattr.va_mode = attr->ia_mode; | |
510 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
511 | inode->i_mode &= ~S_ISGID; | |
512 | } | |
513 | ||
514 | if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) | |
515 | flags |= ATTR_UTIME; | |
516 | #ifdef ATTR_NO_BLOCK | |
517 | if ((ia_valid & ATTR_NO_BLOCK)) | |
518 | flags |= ATTR_NONBLOCK; | |
519 | #endif | |
520 | ||
521 | VOP_SETATTR(vp, &vattr, flags, NULL, error); | |
522 | if (error) | |
523 | return -error; | |
524 | vn_revalidate(vp); | |
525 | return error; | |
526 | } | |
527 | ||
528 | STATIC void | |
529 | linvfs_truncate( | |
530 | struct inode *inode) | |
531 | { | |
532 | block_truncate_page(inode->i_mapping, inode->i_size, linvfs_get_block); | |
533 | } | |
534 | ||
535 | STATIC int | |
536 | linvfs_setxattr( | |
537 | struct dentry *dentry, | |
538 | const char *name, | |
539 | const void *data, | |
540 | size_t size, | |
541 | int flags) | |
542 | { | |
543 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
544 | char *attr = (char *)name; | |
545 | attrnames_t *namesp; | |
546 | int xflags = 0; | |
547 | int error; | |
548 | ||
549 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); | |
550 | if (!namesp) | |
551 | return -EOPNOTSUPP; | |
552 | attr += namesp->attr_namelen; | |
553 | error = namesp->attr_capable(vp, NULL); | |
554 | if (error) | |
555 | return error; | |
556 | ||
557 | /* Convert Linux syscall to XFS internal ATTR flags */ | |
558 | if (flags & XATTR_CREATE) | |
559 | xflags |= ATTR_CREATE; | |
560 | if (flags & XATTR_REPLACE) | |
561 | xflags |= ATTR_REPLACE; | |
562 | xflags |= namesp->attr_flag; | |
563 | return namesp->attr_set(vp, attr, (void *)data, size, xflags); | |
564 | } | |
565 | ||
566 | STATIC ssize_t | |
567 | linvfs_getxattr( | |
568 | struct dentry *dentry, | |
569 | const char *name, | |
570 | void *data, | |
571 | size_t size) | |
572 | { | |
573 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
574 | char *attr = (char *)name; | |
575 | attrnames_t *namesp; | |
576 | int xflags = 0; | |
577 | ssize_t error; | |
578 | ||
579 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); | |
580 | if (!namesp) | |
581 | return -EOPNOTSUPP; | |
582 | attr += namesp->attr_namelen; | |
583 | error = namesp->attr_capable(vp, NULL); | |
584 | if (error) | |
585 | return error; | |
586 | ||
587 | /* Convert Linux syscall to XFS internal ATTR flags */ | |
588 | if (!size) { | |
589 | xflags |= ATTR_KERNOVAL; | |
590 | data = NULL; | |
591 | } | |
592 | xflags |= namesp->attr_flag; | |
593 | return namesp->attr_get(vp, attr, (void *)data, size, xflags); | |
594 | } | |
595 | ||
596 | STATIC ssize_t | |
597 | linvfs_listxattr( | |
598 | struct dentry *dentry, | |
599 | char *data, | |
600 | size_t size) | |
601 | { | |
602 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
603 | int error, xflags = ATTR_KERNAMELS; | |
604 | ssize_t result; | |
605 | ||
606 | if (!size) | |
607 | xflags |= ATTR_KERNOVAL; | |
608 | xflags |= capable(CAP_SYS_ADMIN) ? ATTR_KERNFULLS : ATTR_KERNORMALS; | |
609 | ||
610 | error = attr_generic_list(vp, data, size, xflags, &result); | |
611 | if (error < 0) | |
612 | return error; | |
613 | return result; | |
614 | } | |
615 | ||
616 | STATIC int | |
617 | linvfs_removexattr( | |
618 | struct dentry *dentry, | |
619 | const char *name) | |
620 | { | |
621 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); | |
622 | char *attr = (char *)name; | |
623 | attrnames_t *namesp; | |
624 | int xflags = 0; | |
625 | int error; | |
626 | ||
627 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); | |
628 | if (!namesp) | |
629 | return -EOPNOTSUPP; | |
630 | attr += namesp->attr_namelen; | |
631 | error = namesp->attr_capable(vp, NULL); | |
632 | if (error) | |
633 | return error; | |
634 | xflags |= namesp->attr_flag; | |
635 | return namesp->attr_remove(vp, attr, xflags); | |
636 | } | |
637 | ||
638 | ||
639 | struct inode_operations linvfs_file_inode_operations = { | |
640 | .permission = linvfs_permission, | |
641 | .truncate = linvfs_truncate, | |
642 | .getattr = linvfs_getattr, | |
643 | .setattr = linvfs_setattr, | |
644 | .setxattr = linvfs_setxattr, | |
645 | .getxattr = linvfs_getxattr, | |
646 | .listxattr = linvfs_listxattr, | |
647 | .removexattr = linvfs_removexattr, | |
648 | }; | |
649 | ||
650 | struct inode_operations linvfs_dir_inode_operations = { | |
651 | .create = linvfs_create, | |
652 | .lookup = linvfs_lookup, | |
653 | .link = linvfs_link, | |
654 | .unlink = linvfs_unlink, | |
655 | .symlink = linvfs_symlink, | |
656 | .mkdir = linvfs_mkdir, | |
657 | .rmdir = linvfs_rmdir, | |
658 | .mknod = linvfs_mknod, | |
659 | .rename = linvfs_rename, | |
660 | .permission = linvfs_permission, | |
661 | .getattr = linvfs_getattr, | |
662 | .setattr = linvfs_setattr, | |
663 | .setxattr = linvfs_setxattr, | |
664 | .getxattr = linvfs_getxattr, | |
665 | .listxattr = linvfs_listxattr, | |
666 | .removexattr = linvfs_removexattr, | |
667 | }; | |
668 | ||
669 | struct inode_operations linvfs_symlink_inode_operations = { | |
670 | .readlink = generic_readlink, | |
671 | .follow_link = linvfs_follow_link, | |
672 | .put_link = linvfs_put_link, | |
673 | .permission = linvfs_permission, | |
674 | .getattr = linvfs_getattr, | |
675 | .setattr = linvfs_setattr, | |
676 | .setxattr = linvfs_setxattr, | |
677 | .getxattr = linvfs_getxattr, | |
678 | .listxattr = linvfs_listxattr, | |
679 | .removexattr = linvfs_removexattr, | |
680 | }; |