Commit | Line | Data |
---|---|---|
16f7e0fe | 1 | #include <linux/capability.h> |
1da177e4 LT |
2 | #include <linux/fs.h> |
3 | #include <linux/posix_acl.h> | |
f466c6fd | 4 | #include "reiserfs.h" |
1da177e4 LT |
5 | #include <linux/errno.h> |
6 | #include <linux/pagemap.h> | |
7 | #include <linux/xattr.h> | |
5a0e3ad6 | 8 | #include <linux/slab.h> |
9a59f452 | 9 | #include <linux/posix_acl_xattr.h> |
c45ac888 | 10 | #include "xattr.h" |
a3063ab8 | 11 | #include "acl.h" |
1da177e4 LT |
12 | #include <asm/uaccess.h> |
13 | ||
0ab2621e JM |
14 | static int reiserfs_set_acl(struct reiserfs_transaction_handle *th, |
15 | struct inode *inode, int type, | |
bd4c625c | 16 | struct posix_acl *acl); |
1da177e4 LT |
17 | |
18 | static int | |
9dad943a | 19 | reiserfs_posix_acl_set(struct dentry *dentry, const char *name, const void *value, |
431547b3 | 20 | size_t size, int flags, int type) |
1da177e4 | 21 | { |
431547b3 | 22 | struct inode *inode = dentry->d_inode; |
1da177e4 | 23 | struct posix_acl *acl; |
0ab2621e JM |
24 | int error, error2; |
25 | struct reiserfs_transaction_handle th; | |
26 | size_t jcreate_blocks; | |
1da177e4 LT |
27 | if (!reiserfs_posixacl(inode->i_sb)) |
28 | return -EOPNOTSUPP; | |
2e149670 | 29 | if (!inode_owner_or_capable(inode)) |
1da177e4 LT |
30 | return -EPERM; |
31 | ||
32 | if (value) { | |
5f3a4a28 | 33 | acl = posix_acl_from_xattr(&init_user_ns, value, size); |
1da177e4 LT |
34 | if (IS_ERR(acl)) { |
35 | return PTR_ERR(acl); | |
36 | } else if (acl) { | |
37 | error = posix_acl_valid(acl); | |
38 | if (error) | |
39 | goto release_and_out; | |
40 | } | |
41 | } else | |
42 | acl = NULL; | |
43 | ||
0ab2621e JM |
44 | /* Pessimism: We can't assume that anything from the xattr root up |
45 | * has been created. */ | |
46 | ||
47 | jcreate_blocks = reiserfs_xattr_jcreate_nblocks(inode) + | |
48 | reiserfs_xattr_nblocks(inode, size) * 2; | |
49 | ||
50 | reiserfs_write_lock(inode->i_sb); | |
51 | error = journal_begin(&th, inode->i_sb, jcreate_blocks); | |
4c05141d | 52 | reiserfs_write_unlock(inode->i_sb); |
0ab2621e JM |
53 | if (error == 0) { |
54 | error = reiserfs_set_acl(&th, inode, type, acl); | |
4c05141d | 55 | reiserfs_write_lock(inode->i_sb); |
0ab2621e | 56 | error2 = journal_end(&th, inode->i_sb, jcreate_blocks); |
4c05141d | 57 | reiserfs_write_unlock(inode->i_sb); |
0ab2621e JM |
58 | if (error2) |
59 | error = error2; | |
60 | } | |
1da177e4 | 61 | |
bd4c625c | 62 | release_and_out: |
1da177e4 LT |
63 | posix_acl_release(acl); |
64 | return error; | |
65 | } | |
66 | ||
1da177e4 | 67 | static int |
9dad943a | 68 | reiserfs_posix_acl_get(struct dentry *dentry, const char *name, void *buffer, |
431547b3 | 69 | size_t size, int type) |
1da177e4 LT |
70 | { |
71 | struct posix_acl *acl; | |
72 | int error; | |
73 | ||
431547b3 | 74 | if (!reiserfs_posixacl(dentry->d_sb)) |
1da177e4 LT |
75 | return -EOPNOTSUPP; |
76 | ||
431547b3 | 77 | acl = reiserfs_get_acl(dentry->d_inode, type); |
1da177e4 LT |
78 | if (IS_ERR(acl)) |
79 | return PTR_ERR(acl); | |
80 | if (acl == NULL) | |
81 | return -ENODATA; | |
5f3a4a28 | 82 | error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); |
1da177e4 LT |
83 | posix_acl_release(acl); |
84 | ||
85 | return error; | |
86 | } | |
87 | ||
1da177e4 LT |
88 | /* |
89 | * Convert from filesystem to in-memory representation. | |
90 | */ | |
9dad943a | 91 | static struct posix_acl *reiserfs_posix_acl_from_disk(const void *value, size_t size) |
1da177e4 LT |
92 | { |
93 | const char *end = (char *)value + size; | |
94 | int n, count; | |
95 | struct posix_acl *acl; | |
96 | ||
97 | if (!value) | |
98 | return NULL; | |
99 | if (size < sizeof(reiserfs_acl_header)) | |
bd4c625c LT |
100 | return ERR_PTR(-EINVAL); |
101 | if (((reiserfs_acl_header *) value)->a_version != | |
1da177e4 LT |
102 | cpu_to_le32(REISERFS_ACL_VERSION)) |
103 | return ERR_PTR(-EINVAL); | |
104 | value = (char *)value + sizeof(reiserfs_acl_header); | |
105 | count = reiserfs_acl_count(size); | |
106 | if (count < 0) | |
107 | return ERR_PTR(-EINVAL); | |
108 | if (count == 0) | |
109 | return NULL; | |
110 | acl = posix_acl_alloc(count, GFP_NOFS); | |
111 | if (!acl) | |
112 | return ERR_PTR(-ENOMEM); | |
bd4c625c LT |
113 | for (n = 0; n < count; n++) { |
114 | reiserfs_acl_entry *entry = (reiserfs_acl_entry *) value; | |
1da177e4 LT |
115 | if ((char *)value + sizeof(reiserfs_acl_entry_short) > end) |
116 | goto fail; | |
bd4c625c | 117 | acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag); |
1da177e4 | 118 | acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm); |
bd4c625c LT |
119 | switch (acl->a_entries[n].e_tag) { |
120 | case ACL_USER_OBJ: | |
121 | case ACL_GROUP_OBJ: | |
122 | case ACL_MASK: | |
123 | case ACL_OTHER: | |
124 | value = (char *)value + | |
125 | sizeof(reiserfs_acl_entry_short); | |
bd4c625c LT |
126 | break; |
127 | ||
128 | case ACL_USER: | |
df814654 EB |
129 | value = (char *)value + sizeof(reiserfs_acl_entry); |
130 | if ((char *)value > end) | |
131 | goto fail; | |
132 | acl->a_entries[n].e_uid = | |
133 | make_kuid(&init_user_ns, | |
134 | le32_to_cpu(entry->e_id)); | |
135 | break; | |
bd4c625c LT |
136 | case ACL_GROUP: |
137 | value = (char *)value + sizeof(reiserfs_acl_entry); | |
138 | if ((char *)value > end) | |
1da177e4 | 139 | goto fail; |
df814654 EB |
140 | acl->a_entries[n].e_gid = |
141 | make_kgid(&init_user_ns, | |
142 | le32_to_cpu(entry->e_id)); | |
bd4c625c LT |
143 | break; |
144 | ||
145 | default: | |
146 | goto fail; | |
1da177e4 LT |
147 | } |
148 | } | |
149 | if (value != end) | |
150 | goto fail; | |
151 | return acl; | |
152 | ||
bd4c625c | 153 | fail: |
1da177e4 LT |
154 | posix_acl_release(acl); |
155 | return ERR_PTR(-EINVAL); | |
156 | } | |
157 | ||
158 | /* | |
159 | * Convert from in-memory to filesystem representation. | |
160 | */ | |
9dad943a | 161 | static void *reiserfs_posix_acl_to_disk(const struct posix_acl *acl, size_t * size) |
1da177e4 LT |
162 | { |
163 | reiserfs_acl_header *ext_acl; | |
164 | char *e; | |
165 | int n; | |
166 | ||
167 | *size = reiserfs_acl_size(acl->a_count); | |
5cbded58 | 168 | ext_acl = kmalloc(sizeof(reiserfs_acl_header) + |
bd4c625c LT |
169 | acl->a_count * |
170 | sizeof(reiserfs_acl_entry), | |
171 | GFP_NOFS); | |
1da177e4 LT |
172 | if (!ext_acl) |
173 | return ERR_PTR(-ENOMEM); | |
174 | ext_acl->a_version = cpu_to_le32(REISERFS_ACL_VERSION); | |
175 | e = (char *)ext_acl + sizeof(reiserfs_acl_header); | |
bd4c625c | 176 | for (n = 0; n < acl->a_count; n++) { |
df814654 | 177 | const struct posix_acl_entry *acl_e = &acl->a_entries[n]; |
bd4c625c LT |
178 | reiserfs_acl_entry *entry = (reiserfs_acl_entry *) e; |
179 | entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag); | |
1da177e4 | 180 | entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm); |
bd4c625c LT |
181 | switch (acl->a_entries[n].e_tag) { |
182 | case ACL_USER: | |
df814654 EB |
183 | entry->e_id = cpu_to_le32( |
184 | from_kuid(&init_user_ns, acl_e->e_uid)); | |
185 | e += sizeof(reiserfs_acl_entry); | |
186 | break; | |
bd4c625c | 187 | case ACL_GROUP: |
df814654 EB |
188 | entry->e_id = cpu_to_le32( |
189 | from_kgid(&init_user_ns, acl_e->e_gid)); | |
bd4c625c LT |
190 | e += sizeof(reiserfs_acl_entry); |
191 | break; | |
192 | ||
193 | case ACL_USER_OBJ: | |
194 | case ACL_GROUP_OBJ: | |
195 | case ACL_MASK: | |
196 | case ACL_OTHER: | |
197 | e += sizeof(reiserfs_acl_entry_short); | |
198 | break; | |
199 | ||
200 | default: | |
201 | goto fail; | |
1da177e4 LT |
202 | } |
203 | } | |
204 | return (char *)ext_acl; | |
205 | ||
bd4c625c | 206 | fail: |
1da177e4 LT |
207 | kfree(ext_acl); |
208 | return ERR_PTR(-EINVAL); | |
209 | } | |
210 | ||
211 | /* | |
212 | * Inode operation get_posix_acl(). | |
213 | * | |
1b1dcc1b | 214 | * inode->i_mutex: down |
1da177e4 LT |
215 | * BKL held [before 2.5.x] |
216 | */ | |
bd4c625c | 217 | struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) |
1da177e4 LT |
218 | { |
219 | char *name, *value; | |
073aaa1b | 220 | struct posix_acl *acl; |
3cdc409c | 221 | int size; |
1da177e4 | 222 | int retval; |
bd4c625c | 223 | |
073aaa1b AV |
224 | acl = get_cached_acl(inode, type); |
225 | if (acl != ACL_NOT_CACHED) | |
226 | return acl; | |
227 | ||
bd4c625c LT |
228 | switch (type) { |
229 | case ACL_TYPE_ACCESS: | |
230 | name = POSIX_ACL_XATTR_ACCESS; | |
bd4c625c LT |
231 | break; |
232 | case ACL_TYPE_DEFAULT: | |
233 | name = POSIX_ACL_XATTR_DEFAULT; | |
bd4c625c LT |
234 | break; |
235 | default: | |
073aaa1b | 236 | BUG(); |
bd4c625c LT |
237 | } |
238 | ||
bd4c625c | 239 | size = reiserfs_xattr_get(inode, name, NULL, 0); |
3cdc409c | 240 | if (size < 0) { |
bd4c625c | 241 | if (size == -ENODATA || size == -ENOSYS) { |
073aaa1b | 242 | set_cached_acl(inode, type, NULL); |
bd4c625c LT |
243 | return NULL; |
244 | } | |
245 | return ERR_PTR(size); | |
246 | } | |
1da177e4 | 247 | |
bd4c625c LT |
248 | value = kmalloc(size, GFP_NOFS); |
249 | if (!value) | |
250 | return ERR_PTR(-ENOMEM); | |
1da177e4 LT |
251 | |
252 | retval = reiserfs_xattr_get(inode, name, value, size); | |
253 | if (retval == -ENODATA || retval == -ENOSYS) { | |
254 | /* This shouldn't actually happen as it should have | |
255 | been caught above.. but just in case */ | |
256 | acl = NULL; | |
bd4c625c | 257 | } else if (retval < 0) { |
1da177e4 LT |
258 | acl = ERR_PTR(retval); |
259 | } else { | |
9dad943a | 260 | acl = reiserfs_posix_acl_from_disk(value, retval); |
bd4c625c | 261 | } |
073aaa1b AV |
262 | if (!IS_ERR(acl)) |
263 | set_cached_acl(inode, type, acl); | |
1da177e4 LT |
264 | |
265 | kfree(value); | |
266 | return acl; | |
267 | } | |
268 | ||
269 | /* | |
270 | * Inode operation set_posix_acl(). | |
271 | * | |
1b1dcc1b | 272 | * inode->i_mutex: down |
1da177e4 LT |
273 | * BKL held [before 2.5.x] |
274 | */ | |
275 | static int | |
0ab2621e JM |
276 | reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, |
277 | int type, struct posix_acl *acl) | |
1da177e4 | 278 | { |
bd4c625c | 279 | char *name; |
1da177e4 | 280 | void *value = NULL; |
48b32a35 | 281 | size_t size = 0; |
1da177e4 | 282 | int error; |
1da177e4 LT |
283 | |
284 | if (S_ISLNK(inode->i_mode)) | |
285 | return -EOPNOTSUPP; | |
286 | ||
bd4c625c LT |
287 | switch (type) { |
288 | case ACL_TYPE_ACCESS: | |
289 | name = POSIX_ACL_XATTR_ACCESS; | |
bd4c625c | 290 | if (acl) { |
d6952123 | 291 | error = posix_acl_equiv_mode(acl, &inode->i_mode); |
bd4c625c LT |
292 | if (error < 0) |
293 | return error; | |
294 | else { | |
bd4c625c LT |
295 | if (error == 0) |
296 | acl = NULL; | |
297 | } | |
298 | } | |
299 | break; | |
300 | case ACL_TYPE_DEFAULT: | |
301 | name = POSIX_ACL_XATTR_DEFAULT; | |
bd4c625c LT |
302 | if (!S_ISDIR(inode->i_mode)) |
303 | return acl ? -EACCES : 0; | |
304 | break; | |
305 | default: | |
306 | return -EINVAL; | |
307 | } | |
308 | ||
309 | if (acl) { | |
9dad943a | 310 | value = reiserfs_posix_acl_to_disk(acl, &size); |
bd4c625c LT |
311 | if (IS_ERR(value)) |
312 | return (int)PTR_ERR(value); | |
48b32a35 JM |
313 | } |
314 | ||
0ab2621e | 315 | error = reiserfs_xattr_set_handle(th, inode, name, value, size, 0); |
48b32a35 JM |
316 | |
317 | /* | |
318 | * Ensure that the inode gets dirtied if we're only using | |
319 | * the mode bits and an old ACL didn't exist. We don't need | |
320 | * to check if the inode is hashed here since we won't get | |
321 | * called by reiserfs_inherit_default_acl(). | |
322 | */ | |
323 | if (error == -ENODATA) { | |
324 | error = 0; | |
325 | if (type == ACL_TYPE_ACCESS) { | |
326 | inode->i_ctime = CURRENT_TIME_SEC; | |
bd4c625c | 327 | mark_inode_dirty(inode); |
bd4c625c LT |
328 | } |
329 | } | |
1da177e4 | 330 | |
833d304b | 331 | kfree(value); |
1da177e4 | 332 | |
d984561b | 333 | if (!error) |
073aaa1b | 334 | set_cached_acl(inode, type, acl); |
1da177e4 LT |
335 | |
336 | return error; | |
337 | } | |
338 | ||
1b1dcc1b | 339 | /* dir->i_mutex: locked, |
1da177e4 LT |
340 | * inode is new and not released into the wild yet */ |
341 | int | |
0ab2621e JM |
342 | reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, |
343 | struct inode *dir, struct dentry *dentry, | |
bd4c625c | 344 | struct inode *inode) |
1da177e4 | 345 | { |
bd4c625c LT |
346 | struct posix_acl *acl; |
347 | int err = 0; | |
348 | ||
349 | /* ACLs only get applied to files and directories */ | |
350 | if (S_ISLNK(inode->i_mode)) | |
351 | return 0; | |
352 | ||
353 | /* ACLs can only be used on "new" objects, so if it's an old object | |
354 | * there is nothing to inherit from */ | |
355 | if (get_inode_sd_version(dir) == STAT_DATA_V1) | |
356 | goto apply_umask; | |
357 | ||
358 | /* Don't apply ACLs to objects in the .reiserfs_priv tree.. This | |
359 | * would be useless since permissions are ignored, and a pain because | |
360 | * it introduces locking cycles */ | |
6dfede69 JM |
361 | if (IS_PRIVATE(dir)) { |
362 | inode->i_flags |= S_PRIVATE; | |
bd4c625c LT |
363 | goto apply_umask; |
364 | } | |
365 | ||
366 | acl = reiserfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
7a77b15d | 367 | if (IS_ERR(acl)) |
bd4c625c | 368 | return PTR_ERR(acl); |
bd4c625c LT |
369 | |
370 | if (acl) { | |
bd4c625c LT |
371 | /* Copy the default ACL to the default ACL of a new directory */ |
372 | if (S_ISDIR(inode->i_mode)) { | |
0ab2621e JM |
373 | err = reiserfs_set_acl(th, inode, ACL_TYPE_DEFAULT, |
374 | acl); | |
bd4c625c LT |
375 | if (err) |
376 | goto cleanup; | |
377 | } | |
378 | ||
379 | /* Now we reconcile the new ACL and the mode, | |
380 | potentially modifying both */ | |
37bc1539 | 381 | err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); |
826cae2f AV |
382 | if (err < 0) |
383 | return err; | |
bd4c625c | 384 | |
826cae2f AV |
385 | /* If we need an ACL.. */ |
386 | if (err > 0) | |
387 | err = reiserfs_set_acl(th, inode, ACL_TYPE_ACCESS, acl); | |
bd4c625c LT |
388 | cleanup: |
389 | posix_acl_release(acl); | |
390 | } else { | |
391 | apply_umask: | |
392 | /* no ACL, apply umask */ | |
ce3b0f8d | 393 | inode->i_mode &= ~current_umask(); |
bd4c625c LT |
394 | } |
395 | ||
396 | return err; | |
1da177e4 LT |
397 | } |
398 | ||
0ab2621e JM |
399 | /* This is used to cache the default acl before a new object is created. |
400 | * The biggest reason for this is to get an idea of how many blocks will | |
401 | * actually be required for the create operation if we must inherit an ACL. | |
402 | * An ACL write can add up to 3 object creations and an additional file write | |
403 | * so we'd prefer not to reserve that many blocks in the journal if we can. | |
404 | * It also has the advantage of not loading the ACL with a transaction open, | |
405 | * this may seem silly, but if the owner of the directory is doing the | |
406 | * creation, the ACL may not be loaded since the permissions wouldn't require | |
407 | * it. | |
408 | * We return the number of blocks required for the transaction. | |
409 | */ | |
bd4c625c | 410 | int reiserfs_cache_default_acl(struct inode *inode) |
1da177e4 | 411 | { |
0ab2621e JM |
412 | struct posix_acl *acl; |
413 | int nblocks = 0; | |
414 | ||
415 | if (IS_PRIVATE(inode)) | |
416 | return 0; | |
417 | ||
418 | acl = reiserfs_get_acl(inode, ACL_TYPE_DEFAULT); | |
419 | ||
420 | if (acl && !IS_ERR(acl)) { | |
421 | int size = reiserfs_acl_size(acl->a_count); | |
422 | ||
423 | /* Other xattrs can be created during inode creation. We don't | |
424 | * want to claim too many blocks, so we check to see if we | |
425 | * we need to create the tree to the xattrs, and then we | |
426 | * just want two files. */ | |
427 | nblocks = reiserfs_xattr_jcreate_nblocks(inode); | |
428 | nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb); | |
429 | ||
430 | REISERFS_I(inode)->i_flags |= i_has_xattr_dir; | |
431 | ||
432 | /* We need to account for writes + bitmaps for two files */ | |
433 | nblocks += reiserfs_xattr_nblocks(inode, size) * 4; | |
434 | posix_acl_release(acl); | |
bd4c625c LT |
435 | } |
436 | ||
0ab2621e | 437 | return nblocks; |
1da177e4 LT |
438 | } |
439 | ||
4c05141d JM |
440 | /* |
441 | * Called under i_mutex | |
442 | */ | |
bd4c625c | 443 | int reiserfs_acl_chmod(struct inode *inode) |
1da177e4 | 444 | { |
bc26ab5f AV |
445 | struct reiserfs_transaction_handle th; |
446 | struct posix_acl *acl; | |
447 | size_t size; | |
bd4c625c | 448 | int error; |
1da177e4 | 449 | |
4a857011 JM |
450 | if (IS_PRIVATE(inode)) |
451 | return 0; | |
452 | ||
bd4c625c LT |
453 | if (S_ISLNK(inode->i_mode)) |
454 | return -EOPNOTSUPP; | |
1da177e4 | 455 | |
bd4c625c LT |
456 | if (get_inode_sd_version(inode) == STAT_DATA_V1 || |
457 | !reiserfs_posixacl(inode->i_sb)) { | |
458 | return 0; | |
1da177e4 LT |
459 | } |
460 | ||
bd4c625c | 461 | acl = reiserfs_get_acl(inode, ACL_TYPE_ACCESS); |
bd4c625c LT |
462 | if (!acl) |
463 | return 0; | |
464 | if (IS_ERR(acl)) | |
465 | return PTR_ERR(acl); | |
5bf3258f | 466 | error = __posix_acl_chmod(&acl, GFP_NOFS, inode->i_mode); |
bc26ab5f AV |
467 | if (error) |
468 | return error; | |
469 | ||
470 | size = reiserfs_xattr_nblocks(inode, reiserfs_acl_size(acl->a_count)); | |
4c05141d | 471 | reiserfs_write_lock(inode->i_sb); |
bc26ab5f | 472 | error = journal_begin(&th, inode->i_sb, size * 2); |
4c05141d | 473 | reiserfs_write_unlock(inode->i_sb); |
0ab2621e | 474 | if (!error) { |
bc26ab5f AV |
475 | int error2; |
476 | error = reiserfs_set_acl(&th, inode, ACL_TYPE_ACCESS, acl); | |
4c05141d | 477 | reiserfs_write_lock(inode->i_sb); |
bc26ab5f | 478 | error2 = journal_end(&th, inode->i_sb, size * 2); |
4c05141d | 479 | reiserfs_write_unlock(inode->i_sb); |
bc26ab5f AV |
480 | if (error2) |
481 | error = error2; | |
0ab2621e | 482 | } |
bc26ab5f | 483 | posix_acl_release(acl); |
bd4c625c | 484 | return error; |
1da177e4 LT |
485 | } |
486 | ||
431547b3 | 487 | static size_t posix_acl_access_list(struct dentry *dentry, char *list, |
48b32a35 | 488 | size_t list_size, const char *name, |
431547b3 | 489 | size_t name_len, int type) |
1da177e4 | 490 | { |
48b32a35 | 491 | const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); |
431547b3 | 492 | if (!reiserfs_posixacl(dentry->d_sb)) |
bd4c625c | 493 | return 0; |
48b32a35 JM |
494 | if (list && size <= list_size) |
495 | memcpy(list, POSIX_ACL_XATTR_ACCESS, size); | |
496 | return size; | |
1da177e4 LT |
497 | } |
498 | ||
94d09a98 | 499 | const struct xattr_handler reiserfs_posix_acl_access_handler = { |
9a59f452 | 500 | .prefix = POSIX_ACL_XATTR_ACCESS, |
431547b3 | 501 | .flags = ACL_TYPE_ACCESS, |
9dad943a CH |
502 | .get = reiserfs_posix_acl_get, |
503 | .set = reiserfs_posix_acl_set, | |
1da177e4 LT |
504 | .list = posix_acl_access_list, |
505 | }; | |
506 | ||
431547b3 | 507 | static size_t posix_acl_default_list(struct dentry *dentry, char *list, |
48b32a35 | 508 | size_t list_size, const char *name, |
431547b3 | 509 | size_t name_len, int type) |
1da177e4 | 510 | { |
48b32a35 | 511 | const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); |
431547b3 | 512 | if (!reiserfs_posixacl(dentry->d_sb)) |
bd4c625c | 513 | return 0; |
48b32a35 JM |
514 | if (list && size <= list_size) |
515 | memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); | |
516 | return size; | |
1da177e4 LT |
517 | } |
518 | ||
94d09a98 | 519 | const struct xattr_handler reiserfs_posix_acl_default_handler = { |
9a59f452 | 520 | .prefix = POSIX_ACL_XATTR_DEFAULT, |
431547b3 | 521 | .flags = ACL_TYPE_DEFAULT, |
9dad943a CH |
522 | .get = reiserfs_posix_acl_get, |
523 | .set = reiserfs_posix_acl_set, | |
1da177e4 LT |
524 | .list = posix_acl_default_list, |
525 | }; |