blob: e0270d1f8d82b68e8823cccc4db7539fb9a34f5b [file] [log] [blame]
Dave Kleikampac27a0e2006-10-11 01:20:50 -07001/*
Mingming Cao617ba132006-10-11 01:20:53 -07002 * linux/fs/ext4/acl.c
Dave Kleikampac27a0e2006-10-11 01:20:50 -07003 *
4 * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
5 */
6
7#include <linux/init.h>
8#include <linux/sched.h>
9#include <linux/slab.h>
10#include <linux/capability.h>
11#include <linux/fs.h>
Christoph Hellwig3dcf5452008-04-29 18:13:32 -040012#include "ext4_jbd2.h"
13#include "ext4.h"
Dave Kleikampac27a0e2006-10-11 01:20:50 -070014#include "xattr.h"
15#include "acl.h"
16
17/*
18 * Convert from filesystem to in-memory representation.
19 */
20static struct posix_acl *
Mingming Cao617ba132006-10-11 01:20:53 -070021ext4_acl_from_disk(const void *value, size_t size)
Dave Kleikampac27a0e2006-10-11 01:20:50 -070022{
23 const char *end = (char *)value + size;
24 int n, count;
25 struct posix_acl *acl;
26
27 if (!value)
28 return NULL;
Mingming Cao617ba132006-10-11 01:20:53 -070029 if (size < sizeof(ext4_acl_header))
Dave Kleikampac27a0e2006-10-11 01:20:50 -070030 return ERR_PTR(-EINVAL);
Mingming Cao617ba132006-10-11 01:20:53 -070031 if (((ext4_acl_header *)value)->a_version !=
32 cpu_to_le32(EXT4_ACL_VERSION))
Dave Kleikampac27a0e2006-10-11 01:20:50 -070033 return ERR_PTR(-EINVAL);
Mingming Cao617ba132006-10-11 01:20:53 -070034 value = (char *)value + sizeof(ext4_acl_header);
35 count = ext4_acl_count(size);
Dave Kleikampac27a0e2006-10-11 01:20:50 -070036 if (count < 0)
37 return ERR_PTR(-EINVAL);
38 if (count == 0)
39 return NULL;
Josef Bacik216553c2008-04-29 22:02:02 -040040 acl = posix_acl_alloc(count, GFP_NOFS);
Dave Kleikampac27a0e2006-10-11 01:20:50 -070041 if (!acl)
42 return ERR_PTR(-ENOMEM);
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -040043 for (n = 0; n < count; n++) {
Mingming Cao617ba132006-10-11 01:20:53 -070044 ext4_acl_entry *entry =
45 (ext4_acl_entry *)value;
46 if ((char *)value + sizeof(ext4_acl_entry_short) > end)
Dave Kleikampac27a0e2006-10-11 01:20:50 -070047 goto fail;
48 acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag);
49 acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
Dave Kleikampac27a0e2006-10-11 01:20:50 -070050
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -040051 switch (acl->a_entries[n].e_tag) {
52 case ACL_USER_OBJ:
53 case ACL_GROUP_OBJ:
54 case ACL_MASK:
55 case ACL_OTHER:
56 value = (char *)value +
57 sizeof(ext4_acl_entry_short);
58 acl->a_entries[n].e_id = ACL_UNDEFINED_ID;
59 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -070060
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -040061 case ACL_USER:
62 case ACL_GROUP:
63 value = (char *)value + sizeof(ext4_acl_entry);
64 if ((char *)value > end)
Dave Kleikampac27a0e2006-10-11 01:20:50 -070065 goto fail;
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -040066 acl->a_entries[n].e_id =
67 le32_to_cpu(entry->e_id);
68 break;
69
70 default:
71 goto fail;
Dave Kleikampac27a0e2006-10-11 01:20:50 -070072 }
73 }
74 if (value != end)
75 goto fail;
76 return acl;
77
78fail:
79 posix_acl_release(acl);
80 return ERR_PTR(-EINVAL);
81}
82
83/*
84 * Convert from in-memory to filesystem representation.
85 */
86static void *
Mingming Cao617ba132006-10-11 01:20:53 -070087ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
Dave Kleikampac27a0e2006-10-11 01:20:50 -070088{
Mingming Cao617ba132006-10-11 01:20:53 -070089 ext4_acl_header *ext_acl;
Dave Kleikampac27a0e2006-10-11 01:20:50 -070090 char *e;
91 size_t n;
92
Mingming Cao617ba132006-10-11 01:20:53 -070093 *size = ext4_acl_size(acl->a_count);
94 ext_acl = kmalloc(sizeof(ext4_acl_header) + acl->a_count *
Josef Bacik216553c2008-04-29 22:02:02 -040095 sizeof(ext4_acl_entry), GFP_NOFS);
Dave Kleikampac27a0e2006-10-11 01:20:50 -070096 if (!ext_acl)
97 return ERR_PTR(-ENOMEM);
Mingming Cao617ba132006-10-11 01:20:53 -070098 ext_acl->a_version = cpu_to_le32(EXT4_ACL_VERSION);
99 e = (char *)ext_acl + sizeof(ext4_acl_header);
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400100 for (n = 0; n < acl->a_count; n++) {
Mingming Cao617ba132006-10-11 01:20:53 -0700101 ext4_acl_entry *entry = (ext4_acl_entry *)e;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700102 entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
103 entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400104 switch (acl->a_entries[n].e_tag) {
105 case ACL_USER:
106 case ACL_GROUP:
107 entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
108 e += sizeof(ext4_acl_entry);
109 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700110
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400111 case ACL_USER_OBJ:
112 case ACL_GROUP_OBJ:
113 case ACL_MASK:
114 case ACL_OTHER:
115 e += sizeof(ext4_acl_entry_short);
116 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700117
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400118 default:
119 goto fail;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700120 }
121 }
122 return (char *)ext_acl;
123
124fail:
125 kfree(ext_acl);
126 return ERR_PTR(-EINVAL);
127}
128
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700129/*
130 * Inode operation get_posix_acl().
131 *
132 * inode->i_mutex: don't care
133 */
134static struct posix_acl *
Mingming Cao617ba132006-10-11 01:20:53 -0700135ext4_get_acl(struct inode *inode, int type)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700136{
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700137 int name_index;
138 char *value = NULL;
139 struct posix_acl *acl;
140 int retval;
141
142 if (!test_opt(inode->i_sb, POSIX_ACL))
143 return NULL;
144
Al Viro073aaa12009-06-09 12:11:54 -0400145 acl = get_cached_acl(inode, type);
146 if (acl != ACL_NOT_CACHED)
147 return acl;
148
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400149 switch (type) {
150 case ACL_TYPE_ACCESS:
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400151 name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
152 break;
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400153 case ACL_TYPE_DEFAULT:
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400154 name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT;
155 break;
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400156 default:
Al Viro073aaa12009-06-09 12:11:54 -0400157 BUG();
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700158 }
Mingming Cao617ba132006-10-11 01:20:53 -0700159 retval = ext4_xattr_get(inode, name_index, "", NULL, 0);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700160 if (retval > 0) {
Josef Bacik216553c2008-04-29 22:02:02 -0400161 value = kmalloc(retval, GFP_NOFS);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700162 if (!value)
163 return ERR_PTR(-ENOMEM);
Mingming Cao617ba132006-10-11 01:20:53 -0700164 retval = ext4_xattr_get(inode, name_index, "", value, retval);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700165 }
166 if (retval > 0)
Mingming Cao617ba132006-10-11 01:20:53 -0700167 acl = ext4_acl_from_disk(value, retval);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700168 else if (retval == -ENODATA || retval == -ENOSYS)
169 acl = NULL;
170 else
171 acl = ERR_PTR(retval);
172 kfree(value);
173
Al Viro073aaa12009-06-09 12:11:54 -0400174 if (!IS_ERR(acl))
175 set_cached_acl(inode, type, acl);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700176
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700177 return acl;
178}
179
180/*
181 * Set the access or default ACL of an inode.
182 *
Mingming Cao617ba132006-10-11 01:20:53 -0700183 * inode->i_mutex: down unless called from ext4_new_inode
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700184 */
185static int
Mingming Cao617ba132006-10-11 01:20:53 -0700186ext4_set_acl(handle_t *handle, struct inode *inode, int type,
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700187 struct posix_acl *acl)
188{
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700189 int name_index;
190 void *value = NULL;
191 size_t size = 0;
192 int error;
193
194 if (S_ISLNK(inode->i_mode))
195 return -EOPNOTSUPP;
196
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400197 switch (type) {
198 case ACL_TYPE_ACCESS:
199 name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
200 if (acl) {
201 mode_t mode = inode->i_mode;
202 error = posix_acl_equiv_mode(acl, &mode);
203 if (error < 0)
204 return error;
205 else {
206 inode->i_mode = mode;
Jan Karac6ac12a2010-06-15 12:19:59 -0400207 inode->i_ctime = ext4_current_time(inode);
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400208 ext4_mark_inode_dirty(handle, inode);
209 if (error == 0)
210 acl = NULL;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700211 }
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400212 }
213 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700214
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400215 case ACL_TYPE_DEFAULT:
216 name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT;
217 if (!S_ISDIR(inode->i_mode))
218 return acl ? -EACCES : 0;
219 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700220
Theodore Ts'o2b2d6d02008-07-26 16:15:44 -0400221 default:
222 return -EINVAL;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700223 }
224 if (acl) {
Mingming Cao617ba132006-10-11 01:20:53 -0700225 value = ext4_acl_to_disk(acl, &size);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700226 if (IS_ERR(value))
227 return (int)PTR_ERR(value);
228 }
229
Mingming Cao617ba132006-10-11 01:20:53 -0700230 error = ext4_xattr_set_handle(handle, inode, name_index, "",
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700231 value, size, 0);
232
233 kfree(value);
Al Viro073aaa12009-06-09 12:11:54 -0400234 if (!error)
235 set_cached_acl(inode, type, acl);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700236
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700237 return error;
238}
239
Linus Torvalds1d5ccd12009-08-28 12:12:24 -0700240int
Nick Pigginb74c79e2011-01-07 17:49:58 +1100241ext4_check_acl(struct inode *inode, int mask, unsigned int flags)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700242{
Nick Pigginb74c79e2011-01-07 17:49:58 +1100243 struct posix_acl *acl;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700244
Nick Piggin73598612011-01-07 17:50:00 +1100245 if (flags & IPERM_FLAG_RCU) {
246 if (!negative_cached_acl(inode, ACL_TYPE_ACCESS))
247 return -ECHILD;
248 return -EAGAIN;
249 }
Nick Pigginb74c79e2011-01-07 17:49:58 +1100250
251 acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700252 if (IS_ERR(acl))
253 return PTR_ERR(acl);
254 if (acl) {
255 int error = posix_acl_permission(inode, acl, mask);
256 posix_acl_release(acl);
257 return error;
258 }
259
260 return -EAGAIN;
261}
262
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700263/*
Mingming Cao617ba132006-10-11 01:20:53 -0700264 * Initialize the ACLs of a new inode. Called from ext4_new_inode.
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700265 *
266 * dir->i_mutex: down
267 * inode->i_mutex: up (access to inode is still exclusive)
268 */
269int
Mingming Cao617ba132006-10-11 01:20:53 -0700270ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700271{
272 struct posix_acl *acl = NULL;
273 int error = 0;
274
275 if (!S_ISLNK(inode->i_mode)) {
276 if (test_opt(dir->i_sb, POSIX_ACL)) {
Mingming Cao617ba132006-10-11 01:20:53 -0700277 acl = ext4_get_acl(dir, ACL_TYPE_DEFAULT);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700278 if (IS_ERR(acl))
279 return PTR_ERR(acl);
280 }
281 if (!acl)
Al Viroce3b0f82009-03-29 19:08:22 -0400282 inode->i_mode &= ~current_umask();
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700283 }
284 if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
285 struct posix_acl *clone;
286 mode_t mode;
287
288 if (S_ISDIR(inode->i_mode)) {
Mingming Cao617ba132006-10-11 01:20:53 -0700289 error = ext4_set_acl(handle, inode,
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700290 ACL_TYPE_DEFAULT, acl);
291 if (error)
292 goto cleanup;
293 }
Josef Bacik216553c2008-04-29 22:02:02 -0400294 clone = posix_acl_clone(acl, GFP_NOFS);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700295 error = -ENOMEM;
296 if (!clone)
297 goto cleanup;
298
299 mode = inode->i_mode;
300 error = posix_acl_create_masq(clone, &mode);
301 if (error >= 0) {
302 inode->i_mode = mode;
303 if (error > 0) {
304 /* This is an extended ACL */
Mingming Cao617ba132006-10-11 01:20:53 -0700305 error = ext4_set_acl(handle, inode,
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700306 ACL_TYPE_ACCESS, clone);
307 }
308 }
309 posix_acl_release(clone);
310 }
311cleanup:
312 posix_acl_release(acl);
313 return error;
314}
315
316/*
317 * Does chmod for an inode that may have an Access Control List. The
318 * inode->i_mode field must be updated to the desired value by the caller
319 * before calling this function.
320 * Returns 0 on success, or a negative error number.
321 *
322 * We change the ACL rather than storing some ACL entries in the file
323 * mode permission bits (which would be more efficient), because that
324 * would break once additional permissions (like ACL_APPEND, ACL_DELETE
325 * for directories) are added. There are no more bits available in the
326 * file mode.
327 *
328 * inode->i_mutex: down
329 */
330int
Mingming Cao617ba132006-10-11 01:20:53 -0700331ext4_acl_chmod(struct inode *inode)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700332{
333 struct posix_acl *acl, *clone;
Andrew Morton63f57932006-10-11 01:21:24 -0700334 int error;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700335
336 if (S_ISLNK(inode->i_mode))
337 return -EOPNOTSUPP;
338 if (!test_opt(inode->i_sb, POSIX_ACL))
339 return 0;
Mingming Cao617ba132006-10-11 01:20:53 -0700340 acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700341 if (IS_ERR(acl) || !acl)
342 return PTR_ERR(acl);
343 clone = posix_acl_clone(acl, GFP_KERNEL);
344 posix_acl_release(acl);
345 if (!clone)
346 return -ENOMEM;
347 error = posix_acl_chmod_masq(clone, inode->i_mode);
348 if (!error) {
349 handle_t *handle;
350 int retries = 0;
351
352 retry:
Mingming Cao617ba132006-10-11 01:20:53 -0700353 handle = ext4_journal_start(inode,
354 EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700355 if (IS_ERR(handle)) {
356 error = PTR_ERR(handle);
Mingming Cao617ba132006-10-11 01:20:53 -0700357 ext4_std_error(inode->i_sb, error);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700358 goto out;
359 }
Mingming Cao617ba132006-10-11 01:20:53 -0700360 error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
361 ext4_journal_stop(handle);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700362 if (error == -ENOSPC &&
Mingming Cao617ba132006-10-11 01:20:53 -0700363 ext4_should_retry_alloc(inode->i_sb, &retries))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700364 goto retry;
365 }
366out:
367 posix_acl_release(clone);
368 return error;
369}
370
371/*
372 * Extended attribute handlers
373 */
374static size_t
Christoph Hellwig431547b2009-11-13 09:52:56 +0000375ext4_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_len,
376 const char *name, size_t name_len, int type)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700377{
378 const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS);
379
Christoph Hellwig431547b2009-11-13 09:52:56 +0000380 if (!test_opt(dentry->d_sb, POSIX_ACL))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700381 return 0;
382 if (list && size <= list_len)
383 memcpy(list, POSIX_ACL_XATTR_ACCESS, size);
384 return size;
385}
386
387static size_t
Christoph Hellwig431547b2009-11-13 09:52:56 +0000388ext4_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_len,
389 const char *name, size_t name_len, int type)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700390{
391 const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT);
392
Christoph Hellwig431547b2009-11-13 09:52:56 +0000393 if (!test_opt(dentry->d_sb, POSIX_ACL))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700394 return 0;
395 if (list && size <= list_len)
396 memcpy(list, POSIX_ACL_XATTR_DEFAULT, size);
397 return size;
398}
399
400static int
Christoph Hellwig431547b2009-11-13 09:52:56 +0000401ext4_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer,
402 size_t size, int type)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700403{
404 struct posix_acl *acl;
405 int error;
406
Christoph Hellwig431547b2009-11-13 09:52:56 +0000407 if (strcmp(name, "") != 0)
408 return -EINVAL;
409 if (!test_opt(dentry->d_sb, POSIX_ACL))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700410 return -EOPNOTSUPP;
411
Christoph Hellwig431547b2009-11-13 09:52:56 +0000412 acl = ext4_get_acl(dentry->d_inode, type);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700413 if (IS_ERR(acl))
414 return PTR_ERR(acl);
415 if (acl == NULL)
416 return -ENODATA;
417 error = posix_acl_to_xattr(acl, buffer, size);
418 posix_acl_release(acl);
419
420 return error;
421}
422
423static int
Christoph Hellwig431547b2009-11-13 09:52:56 +0000424ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
425 size_t size, int flags, int type)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700426{
Christoph Hellwig431547b2009-11-13 09:52:56 +0000427 struct inode *inode = dentry->d_inode;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700428 handle_t *handle;
429 struct posix_acl *acl;
430 int error, retries = 0;
431
Christoph Hellwig431547b2009-11-13 09:52:56 +0000432 if (strcmp(name, "") != 0)
433 return -EINVAL;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700434 if (!test_opt(inode->i_sb, POSIX_ACL))
435 return -EOPNOTSUPP;
Satyam Sharma3bd858a2007-07-17 15:00:08 +0530436 if (!is_owner_or_cap(inode))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700437 return -EPERM;
438
439 if (value) {
440 acl = posix_acl_from_xattr(value, size);
441 if (IS_ERR(acl))
442 return PTR_ERR(acl);
443 else if (acl) {
444 error = posix_acl_valid(acl);
445 if (error)
446 goto release_and_out;
447 }
448 } else
449 acl = NULL;
450
451retry:
Mingming Cao617ba132006-10-11 01:20:53 -0700452 handle = ext4_journal_start(inode, EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700453 if (IS_ERR(handle))
454 return PTR_ERR(handle);
Mingming Cao617ba132006-10-11 01:20:53 -0700455 error = ext4_set_acl(handle, inode, type, acl);
456 ext4_journal_stop(handle);
457 if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700458 goto retry;
459
460release_and_out:
461 posix_acl_release(acl);
462 return error;
463}
464
Stephen Hemminger11e27522010-05-13 17:53:18 -0700465const struct xattr_handler ext4_xattr_acl_access_handler = {
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700466 .prefix = POSIX_ACL_XATTR_ACCESS,
Christoph Hellwig431547b2009-11-13 09:52:56 +0000467 .flags = ACL_TYPE_ACCESS,
Mingming Cao617ba132006-10-11 01:20:53 -0700468 .list = ext4_xattr_list_acl_access,
Christoph Hellwig431547b2009-11-13 09:52:56 +0000469 .get = ext4_xattr_get_acl,
470 .set = ext4_xattr_set_acl,
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700471};
472
Stephen Hemminger11e27522010-05-13 17:53:18 -0700473const struct xattr_handler ext4_xattr_acl_default_handler = {
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700474 .prefix = POSIX_ACL_XATTR_DEFAULT,
Christoph Hellwig431547b2009-11-13 09:52:56 +0000475 .flags = ACL_TYPE_DEFAULT,
Mingming Cao617ba132006-10-11 01:20:53 -0700476 .list = ext4_xattr_list_acl_default,
Christoph Hellwig431547b2009-11-13 09:52:56 +0000477 .get = ext4_xattr_get_acl,
478 .set = ext4_xattr_set_acl,
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700479};