Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #include <linux/fs.h> |
2 | #include <linux/posix_acl.h> | |
3 | #include <linux/reiserfs_fs.h> | |
4 | #include <linux/errno.h> | |
5 | #include <linux/pagemap.h> | |
6 | #include <linux/xattr.h> | |
9a59f452 | 7 | #include <linux/posix_acl_xattr.h> |
1da177e4 LT |
8 | #include <linux/reiserfs_xattr.h> |
9 | #include <linux/reiserfs_acl.h> | |
10 | #include <asm/uaccess.h> | |
11 | ||
bd4c625c LT |
12 | static int reiserfs_set_acl(struct inode *inode, int type, |
13 | struct posix_acl *acl); | |
1da177e4 LT |
14 | |
15 | static int | |
16 | xattr_set_acl(struct inode *inode, int type, const void *value, size_t size) | |
17 | { | |
18 | struct posix_acl *acl; | |
19 | int error; | |
20 | ||
21 | if (!reiserfs_posixacl(inode->i_sb)) | |
22 | return -EOPNOTSUPP; | |
23 | if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER)) | |
24 | return -EPERM; | |
25 | ||
26 | if (value) { | |
27 | acl = posix_acl_from_xattr(value, size); | |
28 | if (IS_ERR(acl)) { | |
29 | return PTR_ERR(acl); | |
30 | } else if (acl) { | |
31 | error = posix_acl_valid(acl); | |
32 | if (error) | |
33 | goto release_and_out; | |
34 | } | |
35 | } else | |
36 | acl = NULL; | |
37 | ||
bd4c625c | 38 | error = reiserfs_set_acl(inode, type, acl); |
1da177e4 | 39 | |
bd4c625c | 40 | release_and_out: |
1da177e4 LT |
41 | posix_acl_release(acl); |
42 | return error; | |
43 | } | |
44 | ||
1da177e4 LT |
45 | static int |
46 | xattr_get_acl(struct inode *inode, int type, void *buffer, size_t size) | |
47 | { | |
48 | struct posix_acl *acl; | |
49 | int error; | |
50 | ||
51 | if (!reiserfs_posixacl(inode->i_sb)) | |
52 | return -EOPNOTSUPP; | |
53 | ||
bd4c625c | 54 | acl = reiserfs_get_acl(inode, type); |
1da177e4 LT |
55 | if (IS_ERR(acl)) |
56 | return PTR_ERR(acl); | |
57 | if (acl == NULL) | |
58 | return -ENODATA; | |
59 | error = posix_acl_to_xattr(acl, buffer, size); | |
60 | posix_acl_release(acl); | |
61 | ||
62 | return error; | |
63 | } | |
64 | ||
1da177e4 LT |
65 | /* |
66 | * Convert from filesystem to in-memory representation. | |
67 | */ | |
bd4c625c | 68 | static struct posix_acl *posix_acl_from_disk(const void *value, size_t size) |
1da177e4 LT |
69 | { |
70 | const char *end = (char *)value + size; | |
71 | int n, count; | |
72 | struct posix_acl *acl; | |
73 | ||
74 | if (!value) | |
75 | return NULL; | |
76 | if (size < sizeof(reiserfs_acl_header)) | |
bd4c625c LT |
77 | return ERR_PTR(-EINVAL); |
78 | if (((reiserfs_acl_header *) value)->a_version != | |
1da177e4 LT |
79 | cpu_to_le32(REISERFS_ACL_VERSION)) |
80 | return ERR_PTR(-EINVAL); | |
81 | value = (char *)value + sizeof(reiserfs_acl_header); | |
82 | count = reiserfs_acl_count(size); | |
83 | if (count < 0) | |
84 | return ERR_PTR(-EINVAL); | |
85 | if (count == 0) | |
86 | return NULL; | |
87 | acl = posix_acl_alloc(count, GFP_NOFS); | |
88 | if (!acl) | |
89 | return ERR_PTR(-ENOMEM); | |
bd4c625c LT |
90 | for (n = 0; n < count; n++) { |
91 | reiserfs_acl_entry *entry = (reiserfs_acl_entry *) value; | |
1da177e4 LT |
92 | if ((char *)value + sizeof(reiserfs_acl_entry_short) > end) |
93 | goto fail; | |
bd4c625c | 94 | acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag); |
1da177e4 | 95 | acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm); |
bd4c625c LT |
96 | switch (acl->a_entries[n].e_tag) { |
97 | case ACL_USER_OBJ: | |
98 | case ACL_GROUP_OBJ: | |
99 | case ACL_MASK: | |
100 | case ACL_OTHER: | |
101 | value = (char *)value + | |
102 | sizeof(reiserfs_acl_entry_short); | |
103 | acl->a_entries[n].e_id = ACL_UNDEFINED_ID; | |
104 | break; | |
105 | ||
106 | case ACL_USER: | |
107 | case ACL_GROUP: | |
108 | value = (char *)value + sizeof(reiserfs_acl_entry); | |
109 | if ((char *)value > end) | |
1da177e4 | 110 | goto fail; |
bd4c625c LT |
111 | acl->a_entries[n].e_id = le32_to_cpu(entry->e_id); |
112 | break; | |
113 | ||
114 | default: | |
115 | goto fail; | |
1da177e4 LT |
116 | } |
117 | } | |
118 | if (value != end) | |
119 | goto fail; | |
120 | return acl; | |
121 | ||
bd4c625c | 122 | fail: |
1da177e4 LT |
123 | posix_acl_release(acl); |
124 | return ERR_PTR(-EINVAL); | |
125 | } | |
126 | ||
127 | /* | |
128 | * Convert from in-memory to filesystem representation. | |
129 | */ | |
bd4c625c | 130 | static void *posix_acl_to_disk(const struct posix_acl *acl, size_t * size) |
1da177e4 LT |
131 | { |
132 | reiserfs_acl_header *ext_acl; | |
133 | char *e; | |
134 | int n; | |
135 | ||
136 | *size = reiserfs_acl_size(acl->a_count); | |
bd4c625c LT |
137 | ext_acl = (reiserfs_acl_header *) kmalloc(sizeof(reiserfs_acl_header) + |
138 | acl->a_count * | |
139 | sizeof(reiserfs_acl_entry), | |
140 | GFP_NOFS); | |
1da177e4 LT |
141 | if (!ext_acl) |
142 | return ERR_PTR(-ENOMEM); | |
143 | ext_acl->a_version = cpu_to_le32(REISERFS_ACL_VERSION); | |
144 | e = (char *)ext_acl + sizeof(reiserfs_acl_header); | |
bd4c625c LT |
145 | for (n = 0; n < acl->a_count; n++) { |
146 | reiserfs_acl_entry *entry = (reiserfs_acl_entry *) e; | |
147 | entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag); | |
1da177e4 | 148 | entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm); |
bd4c625c LT |
149 | switch (acl->a_entries[n].e_tag) { |
150 | case ACL_USER: | |
151 | case ACL_GROUP: | |
152 | entry->e_id = cpu_to_le32(acl->a_entries[n].e_id); | |
153 | e += sizeof(reiserfs_acl_entry); | |
154 | break; | |
155 | ||
156 | case ACL_USER_OBJ: | |
157 | case ACL_GROUP_OBJ: | |
158 | case ACL_MASK: | |
159 | case ACL_OTHER: | |
160 | e += sizeof(reiserfs_acl_entry_short); | |
161 | break; | |
162 | ||
163 | default: | |
164 | goto fail; | |
1da177e4 LT |
165 | } |
166 | } | |
167 | return (char *)ext_acl; | |
168 | ||
bd4c625c | 169 | fail: |
1da177e4 LT |
170 | kfree(ext_acl); |
171 | return ERR_PTR(-EINVAL); | |
172 | } | |
173 | ||
174 | /* | |
175 | * Inode operation get_posix_acl(). | |
176 | * | |
177 | * inode->i_sem: down | |
178 | * BKL held [before 2.5.x] | |
179 | */ | |
bd4c625c | 180 | struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) |
1da177e4 LT |
181 | { |
182 | char *name, *value; | |
183 | struct posix_acl *acl, **p_acl; | |
184 | size_t size; | |
185 | int retval; | |
bd4c625c LT |
186 | struct reiserfs_inode_info *reiserfs_i = REISERFS_I(inode); |
187 | ||
188 | switch (type) { | |
189 | case ACL_TYPE_ACCESS: | |
190 | name = POSIX_ACL_XATTR_ACCESS; | |
191 | p_acl = &reiserfs_i->i_acl_access; | |
192 | break; | |
193 | case ACL_TYPE_DEFAULT: | |
194 | name = POSIX_ACL_XATTR_DEFAULT; | |
195 | p_acl = &reiserfs_i->i_acl_default; | |
196 | break; | |
197 | default: | |
198 | return ERR_PTR(-EINVAL); | |
199 | } | |
200 | ||
201 | if (IS_ERR(*p_acl)) { | |
202 | if (PTR_ERR(*p_acl) == -ENODATA) | |
203 | return NULL; | |
204 | } else if (*p_acl != NULL) | |
205 | return posix_acl_dup(*p_acl); | |
206 | ||
207 | size = reiserfs_xattr_get(inode, name, NULL, 0); | |
208 | if ((int)size < 0) { | |
209 | if (size == -ENODATA || size == -ENOSYS) { | |
210 | *p_acl = ERR_PTR(-ENODATA); | |
211 | return NULL; | |
212 | } | |
213 | return ERR_PTR(size); | |
214 | } | |
1da177e4 | 215 | |
bd4c625c LT |
216 | value = kmalloc(size, GFP_NOFS); |
217 | if (!value) | |
218 | return ERR_PTR(-ENOMEM); | |
1da177e4 LT |
219 | |
220 | retval = reiserfs_xattr_get(inode, name, value, size); | |
221 | if (retval == -ENODATA || retval == -ENOSYS) { | |
222 | /* This shouldn't actually happen as it should have | |
223 | been caught above.. but just in case */ | |
224 | acl = NULL; | |
bd4c625c LT |
225 | *p_acl = ERR_PTR(-ENODATA); |
226 | } else if (retval < 0) { | |
1da177e4 LT |
227 | acl = ERR_PTR(retval); |
228 | } else { | |
229 | acl = posix_acl_from_disk(value, retval); | |
bd4c625c LT |
230 | *p_acl = posix_acl_dup(acl); |
231 | } | |
1da177e4 LT |
232 | |
233 | kfree(value); | |
234 | return acl; | |
235 | } | |
236 | ||
237 | /* | |
238 | * Inode operation set_posix_acl(). | |
239 | * | |
240 | * inode->i_sem: down | |
241 | * BKL held [before 2.5.x] | |
242 | */ | |
243 | static int | |
244 | reiserfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) | |
245 | { | |
bd4c625c | 246 | char *name; |
1da177e4 LT |
247 | void *value = NULL; |
248 | struct posix_acl **p_acl; | |
249 | size_t size; | |
250 | int error; | |
bd4c625c | 251 | struct reiserfs_inode_info *reiserfs_i = REISERFS_I(inode); |
1da177e4 LT |
252 | |
253 | if (S_ISLNK(inode->i_mode)) | |
254 | return -EOPNOTSUPP; | |
255 | ||
bd4c625c LT |
256 | switch (type) { |
257 | case ACL_TYPE_ACCESS: | |
258 | name = POSIX_ACL_XATTR_ACCESS; | |
259 | p_acl = &reiserfs_i->i_acl_access; | |
260 | if (acl) { | |
261 | mode_t mode = inode->i_mode; | |
262 | error = posix_acl_equiv_mode(acl, &mode); | |
263 | if (error < 0) | |
264 | return error; | |
265 | else { | |
266 | inode->i_mode = mode; | |
267 | if (error == 0) | |
268 | acl = NULL; | |
269 | } | |
270 | } | |
271 | break; | |
272 | case ACL_TYPE_DEFAULT: | |
273 | name = POSIX_ACL_XATTR_DEFAULT; | |
274 | p_acl = &reiserfs_i->i_acl_default; | |
275 | if (!S_ISDIR(inode->i_mode)) | |
276 | return acl ? -EACCES : 0; | |
277 | break; | |
278 | default: | |
279 | return -EINVAL; | |
280 | } | |
281 | ||
282 | if (acl) { | |
283 | value = posix_acl_to_disk(acl, &size); | |
284 | if (IS_ERR(value)) | |
285 | return (int)PTR_ERR(value); | |
286 | error = reiserfs_xattr_set(inode, name, value, size, 0); | |
1da177e4 | 287 | } else { |
bd4c625c LT |
288 | error = reiserfs_xattr_del(inode, name); |
289 | if (error == -ENODATA) { | |
290 | /* This may seem odd here, but it means that the ACL was set | |
291 | * with a value representable with mode bits. If there was | |
292 | * an ACL before, reiserfs_xattr_del already dirtied the inode. | |
293 | */ | |
294 | mark_inode_dirty(inode); | |
295 | error = 0; | |
296 | } | |
297 | } | |
1da177e4 | 298 | |
833d304b | 299 | kfree(value); |
1da177e4 | 300 | |
bd4c625c LT |
301 | if (!error) { |
302 | /* Release the old one */ | |
303 | if (!IS_ERR(*p_acl) && *p_acl) | |
304 | posix_acl_release(*p_acl); | |
1da177e4 | 305 | |
bd4c625c LT |
306 | if (acl == NULL) |
307 | *p_acl = ERR_PTR(-ENODATA); | |
308 | else | |
309 | *p_acl = posix_acl_dup(acl); | |
310 | } | |
1da177e4 LT |
311 | |
312 | return error; | |
313 | } | |
314 | ||
315 | /* dir->i_sem: down, | |
316 | * inode is new and not released into the wild yet */ | |
317 | int | |
bd4c625c LT |
318 | reiserfs_inherit_default_acl(struct inode *dir, struct dentry *dentry, |
319 | struct inode *inode) | |
1da177e4 | 320 | { |
bd4c625c LT |
321 | struct posix_acl *acl; |
322 | int err = 0; | |
323 | ||
324 | /* ACLs only get applied to files and directories */ | |
325 | if (S_ISLNK(inode->i_mode)) | |
326 | return 0; | |
327 | ||
328 | /* ACLs can only be used on "new" objects, so if it's an old object | |
329 | * there is nothing to inherit from */ | |
330 | if (get_inode_sd_version(dir) == STAT_DATA_V1) | |
331 | goto apply_umask; | |
332 | ||
333 | /* Don't apply ACLs to objects in the .reiserfs_priv tree.. This | |
334 | * would be useless since permissions are ignored, and a pain because | |
335 | * it introduces locking cycles */ | |
336 | if (is_reiserfs_priv_object(dir)) { | |
337 | reiserfs_mark_inode_private(inode); | |
338 | goto apply_umask; | |
339 | } | |
340 | ||
341 | acl = reiserfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
342 | if (IS_ERR(acl)) { | |
343 | if (PTR_ERR(acl) == -ENODATA) | |
344 | goto apply_umask; | |
345 | return PTR_ERR(acl); | |
346 | } | |
347 | ||
348 | if (acl) { | |
349 | struct posix_acl *acl_copy; | |
350 | mode_t mode = inode->i_mode; | |
351 | int need_acl; | |
352 | ||
353 | /* Copy the default ACL to the default ACL of a new directory */ | |
354 | if (S_ISDIR(inode->i_mode)) { | |
355 | err = reiserfs_set_acl(inode, ACL_TYPE_DEFAULT, acl); | |
356 | if (err) | |
357 | goto cleanup; | |
358 | } | |
359 | ||
360 | /* Now we reconcile the new ACL and the mode, | |
361 | potentially modifying both */ | |
362 | acl_copy = posix_acl_clone(acl, GFP_NOFS); | |
363 | if (!acl_copy) { | |
364 | err = -ENOMEM; | |
365 | goto cleanup; | |
366 | } | |
367 | ||
368 | need_acl = posix_acl_create_masq(acl_copy, &mode); | |
369 | if (need_acl >= 0) { | |
370 | if (mode != inode->i_mode) { | |
371 | inode->i_mode = mode; | |
372 | } | |
373 | ||
374 | /* If we need an ACL.. */ | |
375 | if (need_acl > 0) { | |
376 | err = | |
377 | reiserfs_set_acl(inode, ACL_TYPE_ACCESS, | |
378 | acl_copy); | |
379 | if (err) | |
380 | goto cleanup_copy; | |
381 | } | |
382 | } | |
383 | cleanup_copy: | |
384 | posix_acl_release(acl_copy); | |
385 | cleanup: | |
386 | posix_acl_release(acl); | |
387 | } else { | |
388 | apply_umask: | |
389 | /* no ACL, apply umask */ | |
390 | inode->i_mode &= ~current->fs->umask; | |
391 | } | |
392 | ||
393 | return err; | |
1da177e4 LT |
394 | } |
395 | ||
396 | /* Looks up and caches the result of the default ACL. | |
397 | * We do this so that we don't need to carry the xattr_sem into | |
398 | * reiserfs_new_inode if we don't need to */ | |
bd4c625c | 399 | int reiserfs_cache_default_acl(struct inode *inode) |
1da177e4 | 400 | { |
bd4c625c LT |
401 | int ret = 0; |
402 | if (reiserfs_posixacl(inode->i_sb) && !is_reiserfs_priv_object(inode)) { | |
403 | struct posix_acl *acl; | |
404 | reiserfs_read_lock_xattr_i(inode); | |
405 | reiserfs_read_lock_xattrs(inode->i_sb); | |
406 | acl = reiserfs_get_acl(inode, ACL_TYPE_DEFAULT); | |
407 | reiserfs_read_unlock_xattrs(inode->i_sb); | |
408 | reiserfs_read_unlock_xattr_i(inode); | |
409 | ret = acl ? 1 : 0; | |
410 | posix_acl_release(acl); | |
411 | } | |
412 | ||
413 | return ret; | |
1da177e4 LT |
414 | } |
415 | ||
bd4c625c | 416 | int reiserfs_acl_chmod(struct inode *inode) |
1da177e4 | 417 | { |
bd4c625c LT |
418 | struct posix_acl *acl, *clone; |
419 | int error; | |
1da177e4 | 420 | |
bd4c625c LT |
421 | if (S_ISLNK(inode->i_mode)) |
422 | return -EOPNOTSUPP; | |
1da177e4 | 423 | |
bd4c625c LT |
424 | if (get_inode_sd_version(inode) == STAT_DATA_V1 || |
425 | !reiserfs_posixacl(inode->i_sb)) { | |
426 | return 0; | |
1da177e4 LT |
427 | } |
428 | ||
bd4c625c LT |
429 | reiserfs_read_lock_xattrs(inode->i_sb); |
430 | acl = reiserfs_get_acl(inode, ACL_TYPE_ACCESS); | |
431 | reiserfs_read_unlock_xattrs(inode->i_sb); | |
432 | if (!acl) | |
433 | return 0; | |
434 | if (IS_ERR(acl)) | |
435 | return PTR_ERR(acl); | |
436 | clone = posix_acl_clone(acl, GFP_NOFS); | |
437 | posix_acl_release(acl); | |
438 | if (!clone) | |
439 | return -ENOMEM; | |
440 | error = posix_acl_chmod_masq(clone, inode->i_mode); | |
441 | if (!error) { | |
442 | int lock = !has_xattr_dir(inode); | |
443 | reiserfs_write_lock_xattr_i(inode); | |
444 | if (lock) | |
445 | reiserfs_write_lock_xattrs(inode->i_sb); | |
446 | else | |
447 | reiserfs_read_lock_xattrs(inode->i_sb); | |
448 | error = reiserfs_set_acl(inode, ACL_TYPE_ACCESS, clone); | |
449 | if (lock) | |
450 | reiserfs_write_unlock_xattrs(inode->i_sb); | |
451 | else | |
452 | reiserfs_read_unlock_xattrs(inode->i_sb); | |
453 | reiserfs_write_unlock_xattr_i(inode); | |
454 | } | |
455 | posix_acl_release(clone); | |
456 | return error; | |
1da177e4 LT |
457 | } |
458 | ||
459 | static int | |
460 | posix_acl_access_get(struct inode *inode, const char *name, | |
bd4c625c | 461 | void *buffer, size_t size) |
1da177e4 | 462 | { |
bd4c625c | 463 | if (strlen(name) != sizeof(POSIX_ACL_XATTR_ACCESS) - 1) |
1da177e4 LT |
464 | return -EINVAL; |
465 | return xattr_get_acl(inode, ACL_TYPE_ACCESS, buffer, size); | |
466 | } | |
467 | ||
468 | static int | |
469 | posix_acl_access_set(struct inode *inode, const char *name, | |
bd4c625c | 470 | const void *value, size_t size, int flags) |
1da177e4 | 471 | { |
bd4c625c | 472 | if (strlen(name) != sizeof(POSIX_ACL_XATTR_ACCESS) - 1) |
1da177e4 LT |
473 | return -EINVAL; |
474 | return xattr_set_acl(inode, ACL_TYPE_ACCESS, value, size); | |
475 | } | |
476 | ||
bd4c625c | 477 | static int posix_acl_access_del(struct inode *inode, const char *name) |
1da177e4 | 478 | { |
bd4c625c LT |
479 | struct reiserfs_inode_info *reiserfs_i = REISERFS_I(inode); |
480 | struct posix_acl **acl = &reiserfs_i->i_acl_access; | |
481 | if (strlen(name) != sizeof(POSIX_ACL_XATTR_ACCESS) - 1) | |
482 | return -EINVAL; | |
483 | if (!IS_ERR(*acl) && *acl) { | |
484 | posix_acl_release(*acl); | |
485 | *acl = ERR_PTR(-ENODATA); | |
486 | } | |
487 | ||
488 | return 0; | |
1da177e4 LT |
489 | } |
490 | ||
491 | static int | |
bd4c625c LT |
492 | posix_acl_access_list(struct inode *inode, const char *name, int namelen, |
493 | char *out) | |
1da177e4 | 494 | { |
bd4c625c LT |
495 | int len = namelen; |
496 | if (!reiserfs_posixacl(inode->i_sb)) | |
497 | return 0; | |
498 | if (out) | |
499 | memcpy(out, name, len); | |
1da177e4 | 500 | |
bd4c625c | 501 | return len; |
1da177e4 LT |
502 | } |
503 | ||
504 | struct reiserfs_xattr_handler posix_acl_access_handler = { | |
9a59f452 | 505 | .prefix = POSIX_ACL_XATTR_ACCESS, |
1da177e4 LT |
506 | .get = posix_acl_access_get, |
507 | .set = posix_acl_access_set, | |
508 | .del = posix_acl_access_del, | |
509 | .list = posix_acl_access_list, | |
510 | }; | |
511 | ||
512 | static int | |
bd4c625c LT |
513 | posix_acl_default_get(struct inode *inode, const char *name, |
514 | void *buffer, size_t size) | |
1da177e4 | 515 | { |
bd4c625c | 516 | if (strlen(name) != sizeof(POSIX_ACL_XATTR_DEFAULT) - 1) |
1da177e4 LT |
517 | return -EINVAL; |
518 | return xattr_get_acl(inode, ACL_TYPE_DEFAULT, buffer, size); | |
519 | } | |
520 | ||
521 | static int | |
522 | posix_acl_default_set(struct inode *inode, const char *name, | |
bd4c625c | 523 | const void *value, size_t size, int flags) |
1da177e4 | 524 | { |
bd4c625c | 525 | if (strlen(name) != sizeof(POSIX_ACL_XATTR_DEFAULT) - 1) |
1da177e4 LT |
526 | return -EINVAL; |
527 | return xattr_set_acl(inode, ACL_TYPE_DEFAULT, value, size); | |
528 | } | |
529 | ||
bd4c625c | 530 | static int posix_acl_default_del(struct inode *inode, const char *name) |
1da177e4 | 531 | { |
bd4c625c LT |
532 | struct reiserfs_inode_info *reiserfs_i = REISERFS_I(inode); |
533 | struct posix_acl **acl = &reiserfs_i->i_acl_default; | |
534 | if (strlen(name) != sizeof(POSIX_ACL_XATTR_DEFAULT) - 1) | |
535 | return -EINVAL; | |
536 | if (!IS_ERR(*acl) && *acl) { | |
537 | posix_acl_release(*acl); | |
538 | *acl = ERR_PTR(-ENODATA); | |
539 | } | |
540 | ||
541 | return 0; | |
1da177e4 LT |
542 | } |
543 | ||
544 | static int | |
bd4c625c LT |
545 | posix_acl_default_list(struct inode *inode, const char *name, int namelen, |
546 | char *out) | |
1da177e4 | 547 | { |
bd4c625c LT |
548 | int len = namelen; |
549 | if (!reiserfs_posixacl(inode->i_sb)) | |
550 | return 0; | |
551 | if (out) | |
552 | memcpy(out, name, len); | |
1da177e4 | 553 | |
bd4c625c | 554 | return len; |
1da177e4 LT |
555 | } |
556 | ||
557 | struct reiserfs_xattr_handler posix_acl_default_handler = { | |
9a59f452 | 558 | .prefix = POSIX_ACL_XATTR_DEFAULT, |
1da177e4 LT |
559 | .get = posix_acl_default_get, |
560 | .set = posix_acl_default_set, | |
561 | .del = posix_acl_default_del, | |
562 | .list = posix_acl_default_list, | |
563 | }; |