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1 | /* | |
2 | * fs/f2fs/xattr.c | |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * Portions of this code from linux/fs/ext2/xattr.c | |
8 | * | |
9 | * Copyright (C) 2001-2003 Andreas Gruenbacher <agruen@suse.de> | |
10 | * | |
11 | * Fix by Harrison Xing <harrison@mountainviewdata.com>. | |
12 | * Extended attributes for symlinks and special files added per | |
13 | * suggestion of Luka Renko <luka.renko@hermes.si>. | |
14 | * xattr consolidation Copyright (c) 2004 James Morris <jmorris@redhat.com>, | |
15 | * Red Hat Inc. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License version 2 as | |
19 | * published by the Free Software Foundation. | |
20 | */ | |
21 | #include <linux/rwsem.h> | |
22 | #include <linux/f2fs_fs.h> | |
23 | #include <linux/security.h> | |
24 | #include "f2fs.h" | |
25 | #include "xattr.h" | |
26 | ||
27 | static size_t f2fs_xattr_generic_list(struct dentry *dentry, char *list, | |
28 | size_t list_size, const char *name, size_t name_len, int type) | |
29 | { | |
30 | struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); | |
31 | int total_len, prefix_len = 0; | |
32 | const char *prefix = NULL; | |
33 | ||
34 | switch (type) { | |
35 | case F2FS_XATTR_INDEX_USER: | |
36 | if (!test_opt(sbi, XATTR_USER)) | |
37 | return -EOPNOTSUPP; | |
38 | prefix = XATTR_USER_PREFIX; | |
39 | prefix_len = XATTR_USER_PREFIX_LEN; | |
40 | break; | |
41 | case F2FS_XATTR_INDEX_TRUSTED: | |
42 | if (!capable(CAP_SYS_ADMIN)) | |
43 | return -EPERM; | |
44 | prefix = XATTR_TRUSTED_PREFIX; | |
45 | prefix_len = XATTR_TRUSTED_PREFIX_LEN; | |
46 | break; | |
47 | case F2FS_XATTR_INDEX_SECURITY: | |
48 | prefix = XATTR_SECURITY_PREFIX; | |
49 | prefix_len = XATTR_SECURITY_PREFIX_LEN; | |
50 | break; | |
51 | default: | |
52 | return -EINVAL; | |
53 | } | |
54 | ||
55 | total_len = prefix_len + name_len + 1; | |
56 | if (list && total_len <= list_size) { | |
57 | memcpy(list, prefix, prefix_len); | |
58 | memcpy(list + prefix_len, name, name_len); | |
59 | list[prefix_len + name_len] = '\0'; | |
60 | } | |
61 | return total_len; | |
62 | } | |
63 | ||
64 | static int f2fs_xattr_generic_get(struct dentry *dentry, const char *name, | |
65 | void *buffer, size_t size, int type) | |
66 | { | |
67 | struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); | |
68 | ||
69 | switch (type) { | |
70 | case F2FS_XATTR_INDEX_USER: | |
71 | if (!test_opt(sbi, XATTR_USER)) | |
72 | return -EOPNOTSUPP; | |
73 | break; | |
74 | case F2FS_XATTR_INDEX_TRUSTED: | |
75 | if (!capable(CAP_SYS_ADMIN)) | |
76 | return -EPERM; | |
77 | break; | |
78 | case F2FS_XATTR_INDEX_SECURITY: | |
79 | break; | |
80 | default: | |
81 | return -EINVAL; | |
82 | } | |
83 | if (strcmp(name, "") == 0) | |
84 | return -EINVAL; | |
85 | return f2fs_getxattr(dentry->d_inode, type, name, buffer, size); | |
86 | } | |
87 | ||
88 | static int f2fs_xattr_generic_set(struct dentry *dentry, const char *name, | |
89 | const void *value, size_t size, int flags, int type) | |
90 | { | |
91 | struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); | |
92 | ||
93 | switch (type) { | |
94 | case F2FS_XATTR_INDEX_USER: | |
95 | if (!test_opt(sbi, XATTR_USER)) | |
96 | return -EOPNOTSUPP; | |
97 | break; | |
98 | case F2FS_XATTR_INDEX_TRUSTED: | |
99 | if (!capable(CAP_SYS_ADMIN)) | |
100 | return -EPERM; | |
101 | break; | |
102 | case F2FS_XATTR_INDEX_SECURITY: | |
103 | break; | |
104 | default: | |
105 | return -EINVAL; | |
106 | } | |
107 | if (strcmp(name, "") == 0) | |
108 | return -EINVAL; | |
109 | ||
110 | return f2fs_setxattr(dentry->d_inode, type, name, value, size, NULL); | |
111 | } | |
112 | ||
113 | static size_t f2fs_xattr_advise_list(struct dentry *dentry, char *list, | |
114 | size_t list_size, const char *name, size_t name_len, int type) | |
115 | { | |
116 | const char *xname = F2FS_SYSTEM_ADVISE_PREFIX; | |
117 | size_t size; | |
118 | ||
119 | if (type != F2FS_XATTR_INDEX_ADVISE) | |
120 | return 0; | |
121 | ||
122 | size = strlen(xname) + 1; | |
123 | if (list && size <= list_size) | |
124 | memcpy(list, xname, size); | |
125 | return size; | |
126 | } | |
127 | ||
128 | static int f2fs_xattr_advise_get(struct dentry *dentry, const char *name, | |
129 | void *buffer, size_t size, int type) | |
130 | { | |
131 | struct inode *inode = dentry->d_inode; | |
132 | ||
133 | if (strcmp(name, "") != 0) | |
134 | return -EINVAL; | |
135 | ||
136 | *((char *)buffer) = F2FS_I(inode)->i_advise; | |
137 | return sizeof(char); | |
138 | } | |
139 | ||
140 | static int f2fs_xattr_advise_set(struct dentry *dentry, const char *name, | |
141 | const void *value, size_t size, int flags, int type) | |
142 | { | |
143 | struct inode *inode = dentry->d_inode; | |
144 | ||
145 | if (strcmp(name, "") != 0) | |
146 | return -EINVAL; | |
147 | if (!inode_owner_or_capable(inode)) | |
148 | return -EPERM; | |
149 | if (value == NULL) | |
150 | return -EINVAL; | |
151 | ||
152 | F2FS_I(inode)->i_advise |= *(char *)value; | |
153 | return 0; | |
154 | } | |
155 | ||
156 | #ifdef CONFIG_F2FS_FS_SECURITY | |
157 | static int __f2fs_setxattr(struct inode *inode, int name_index, | |
158 | const char *name, const void *value, size_t value_len, | |
159 | struct page *ipage); | |
160 | static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array, | |
161 | void *page) | |
162 | { | |
163 | const struct xattr *xattr; | |
164 | int err = 0; | |
165 | ||
166 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { | |
167 | err = __f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY, | |
168 | xattr->name, xattr->value, | |
169 | xattr->value_len, (struct page *)page); | |
170 | if (err < 0) | |
171 | break; | |
172 | } | |
173 | return err; | |
174 | } | |
175 | ||
176 | int f2fs_init_security(struct inode *inode, struct inode *dir, | |
177 | const struct qstr *qstr, struct page *ipage) | |
178 | { | |
179 | return security_inode_init_security(inode, dir, qstr, | |
180 | &f2fs_initxattrs, ipage); | |
181 | } | |
182 | #endif | |
183 | ||
184 | const struct xattr_handler f2fs_xattr_user_handler = { | |
185 | .prefix = XATTR_USER_PREFIX, | |
186 | .flags = F2FS_XATTR_INDEX_USER, | |
187 | .list = f2fs_xattr_generic_list, | |
188 | .get = f2fs_xattr_generic_get, | |
189 | .set = f2fs_xattr_generic_set, | |
190 | }; | |
191 | ||
192 | const struct xattr_handler f2fs_xattr_trusted_handler = { | |
193 | .prefix = XATTR_TRUSTED_PREFIX, | |
194 | .flags = F2FS_XATTR_INDEX_TRUSTED, | |
195 | .list = f2fs_xattr_generic_list, | |
196 | .get = f2fs_xattr_generic_get, | |
197 | .set = f2fs_xattr_generic_set, | |
198 | }; | |
199 | ||
200 | const struct xattr_handler f2fs_xattr_advise_handler = { | |
201 | .prefix = F2FS_SYSTEM_ADVISE_PREFIX, | |
202 | .flags = F2FS_XATTR_INDEX_ADVISE, | |
203 | .list = f2fs_xattr_advise_list, | |
204 | .get = f2fs_xattr_advise_get, | |
205 | .set = f2fs_xattr_advise_set, | |
206 | }; | |
207 | ||
208 | const struct xattr_handler f2fs_xattr_security_handler = { | |
209 | .prefix = XATTR_SECURITY_PREFIX, | |
210 | .flags = F2FS_XATTR_INDEX_SECURITY, | |
211 | .list = f2fs_xattr_generic_list, | |
212 | .get = f2fs_xattr_generic_get, | |
213 | .set = f2fs_xattr_generic_set, | |
214 | }; | |
215 | ||
216 | static const struct xattr_handler *f2fs_xattr_handler_map[] = { | |
217 | [F2FS_XATTR_INDEX_USER] = &f2fs_xattr_user_handler, | |
218 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
219 | [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &f2fs_xattr_acl_access_handler, | |
220 | [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &f2fs_xattr_acl_default_handler, | |
221 | #endif | |
222 | [F2FS_XATTR_INDEX_TRUSTED] = &f2fs_xattr_trusted_handler, | |
223 | #ifdef CONFIG_F2FS_FS_SECURITY | |
224 | [F2FS_XATTR_INDEX_SECURITY] = &f2fs_xattr_security_handler, | |
225 | #endif | |
226 | [F2FS_XATTR_INDEX_ADVISE] = &f2fs_xattr_advise_handler, | |
227 | }; | |
228 | ||
229 | const struct xattr_handler *f2fs_xattr_handlers[] = { | |
230 | &f2fs_xattr_user_handler, | |
231 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
232 | &f2fs_xattr_acl_access_handler, | |
233 | &f2fs_xattr_acl_default_handler, | |
234 | #endif | |
235 | &f2fs_xattr_trusted_handler, | |
236 | #ifdef CONFIG_F2FS_FS_SECURITY | |
237 | &f2fs_xattr_security_handler, | |
238 | #endif | |
239 | &f2fs_xattr_advise_handler, | |
240 | NULL, | |
241 | }; | |
242 | ||
243 | static inline const struct xattr_handler *f2fs_xattr_handler(int name_index) | |
244 | { | |
245 | const struct xattr_handler *handler = NULL; | |
246 | ||
247 | if (name_index > 0 && name_index < ARRAY_SIZE(f2fs_xattr_handler_map)) | |
248 | handler = f2fs_xattr_handler_map[name_index]; | |
249 | return handler; | |
250 | } | |
251 | ||
252 | static struct f2fs_xattr_entry *__find_xattr(void *base_addr, int name_index, | |
253 | size_t name_len, const char *name) | |
254 | { | |
255 | struct f2fs_xattr_entry *entry; | |
256 | ||
257 | list_for_each_xattr(entry, base_addr) { | |
258 | if (entry->e_name_index != name_index) | |
259 | continue; | |
260 | if (entry->e_name_len != name_len) | |
261 | continue; | |
262 | if (!memcmp(entry->e_name, name, name_len)) | |
263 | break; | |
264 | } | |
265 | return entry; | |
266 | } | |
267 | ||
268 | static void *read_all_xattrs(struct inode *inode, struct page *ipage) | |
269 | { | |
270 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
271 | struct f2fs_xattr_header *header; | |
272 | size_t size = PAGE_SIZE, inline_size = 0; | |
273 | void *txattr_addr; | |
274 | ||
275 | inline_size = inline_xattr_size(inode); | |
276 | ||
277 | txattr_addr = kzalloc(inline_size + size, GFP_KERNEL); | |
278 | if (!txattr_addr) | |
279 | return NULL; | |
280 | ||
281 | /* read from inline xattr */ | |
282 | if (inline_size) { | |
283 | struct page *page = NULL; | |
284 | void *inline_addr; | |
285 | ||
286 | if (ipage) { | |
287 | inline_addr = inline_xattr_addr(ipage); | |
288 | } else { | |
289 | page = get_node_page(sbi, inode->i_ino); | |
290 | if (IS_ERR(page)) | |
291 | goto fail; | |
292 | inline_addr = inline_xattr_addr(page); | |
293 | } | |
294 | memcpy(txattr_addr, inline_addr, inline_size); | |
295 | f2fs_put_page(page, 1); | |
296 | } | |
297 | ||
298 | /* read from xattr node block */ | |
299 | if (F2FS_I(inode)->i_xattr_nid) { | |
300 | struct page *xpage; | |
301 | void *xattr_addr; | |
302 | ||
303 | /* The inode already has an extended attribute block. */ | |
304 | xpage = get_node_page(sbi, F2FS_I(inode)->i_xattr_nid); | |
305 | if (IS_ERR(xpage)) | |
306 | goto fail; | |
307 | ||
308 | xattr_addr = page_address(xpage); | |
309 | memcpy(txattr_addr + inline_size, xattr_addr, PAGE_SIZE); | |
310 | f2fs_put_page(xpage, 1); | |
311 | } | |
312 | ||
313 | header = XATTR_HDR(txattr_addr); | |
314 | ||
315 | /* never been allocated xattrs */ | |
316 | if (le32_to_cpu(header->h_magic) != F2FS_XATTR_MAGIC) { | |
317 | header->h_magic = cpu_to_le32(F2FS_XATTR_MAGIC); | |
318 | header->h_refcount = cpu_to_le32(1); | |
319 | } | |
320 | return txattr_addr; | |
321 | fail: | |
322 | kzfree(txattr_addr); | |
323 | return NULL; | |
324 | } | |
325 | ||
326 | static inline int write_all_xattrs(struct inode *inode, __u32 hsize, | |
327 | void *txattr_addr, struct page *ipage) | |
328 | { | |
329 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
330 | size_t inline_size = 0; | |
331 | void *xattr_addr; | |
332 | struct page *xpage; | |
333 | nid_t new_nid = 0; | |
334 | int err; | |
335 | ||
336 | inline_size = inline_xattr_size(inode); | |
337 | ||
338 | if (hsize > inline_size && !F2FS_I(inode)->i_xattr_nid) | |
339 | if (!alloc_nid(sbi, &new_nid)) | |
340 | return -ENOSPC; | |
341 | ||
342 | /* write to inline xattr */ | |
343 | if (inline_size) { | |
344 | struct page *page = NULL; | |
345 | void *inline_addr; | |
346 | ||
347 | if (ipage) { | |
348 | inline_addr = inline_xattr_addr(ipage); | |
349 | } else { | |
350 | page = get_node_page(sbi, inode->i_ino); | |
351 | if (IS_ERR(page)) { | |
352 | alloc_nid_failed(sbi, new_nid); | |
353 | return PTR_ERR(page); | |
354 | } | |
355 | inline_addr = inline_xattr_addr(page); | |
356 | } | |
357 | memcpy(inline_addr, txattr_addr, inline_size); | |
358 | f2fs_put_page(page, 1); | |
359 | ||
360 | /* no need to use xattr node block */ | |
361 | if (hsize <= inline_size) { | |
362 | err = truncate_xattr_node(inode, ipage); | |
363 | alloc_nid_failed(sbi, new_nid); | |
364 | return err; | |
365 | } | |
366 | } | |
367 | ||
368 | /* write to xattr node block */ | |
369 | if (F2FS_I(inode)->i_xattr_nid) { | |
370 | xpage = get_node_page(sbi, F2FS_I(inode)->i_xattr_nid); | |
371 | if (IS_ERR(xpage)) { | |
372 | alloc_nid_failed(sbi, new_nid); | |
373 | return PTR_ERR(xpage); | |
374 | } | |
375 | f2fs_bug_on(new_nid); | |
376 | } else { | |
377 | struct dnode_of_data dn; | |
378 | set_new_dnode(&dn, inode, NULL, NULL, new_nid); | |
379 | xpage = new_node_page(&dn, XATTR_NODE_OFFSET, ipage); | |
380 | if (IS_ERR(xpage)) { | |
381 | alloc_nid_failed(sbi, new_nid); | |
382 | return PTR_ERR(xpage); | |
383 | } | |
384 | alloc_nid_done(sbi, new_nid); | |
385 | } | |
386 | ||
387 | xattr_addr = page_address(xpage); | |
388 | memcpy(xattr_addr, txattr_addr + inline_size, PAGE_SIZE - | |
389 | sizeof(struct node_footer)); | |
390 | set_page_dirty(xpage); | |
391 | f2fs_put_page(xpage, 1); | |
392 | ||
393 | /* need to checkpoint during fsync */ | |
394 | F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); | |
395 | return 0; | |
396 | } | |
397 | ||
398 | int f2fs_getxattr(struct inode *inode, int name_index, const char *name, | |
399 | void *buffer, size_t buffer_size) | |
400 | { | |
401 | struct f2fs_xattr_entry *entry; | |
402 | void *base_addr; | |
403 | int error = 0; | |
404 | size_t value_len, name_len; | |
405 | ||
406 | if (name == NULL) | |
407 | return -EINVAL; | |
408 | name_len = strlen(name); | |
409 | ||
410 | base_addr = read_all_xattrs(inode, NULL); | |
411 | if (!base_addr) | |
412 | return -ENOMEM; | |
413 | ||
414 | entry = __find_xattr(base_addr, name_index, name_len, name); | |
415 | if (IS_XATTR_LAST_ENTRY(entry)) { | |
416 | error = -ENODATA; | |
417 | goto cleanup; | |
418 | } | |
419 | ||
420 | value_len = le16_to_cpu(entry->e_value_size); | |
421 | ||
422 | if (buffer && value_len > buffer_size) { | |
423 | error = -ERANGE; | |
424 | goto cleanup; | |
425 | } | |
426 | ||
427 | if (buffer) { | |
428 | char *pval = entry->e_name + entry->e_name_len; | |
429 | memcpy(buffer, pval, value_len); | |
430 | } | |
431 | error = value_len; | |
432 | ||
433 | cleanup: | |
434 | kzfree(base_addr); | |
435 | return error; | |
436 | } | |
437 | ||
438 | ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size) | |
439 | { | |
440 | struct inode *inode = dentry->d_inode; | |
441 | struct f2fs_xattr_entry *entry; | |
442 | void *base_addr; | |
443 | int error = 0; | |
444 | size_t rest = buffer_size; | |
445 | ||
446 | base_addr = read_all_xattrs(inode, NULL); | |
447 | if (!base_addr) | |
448 | return -ENOMEM; | |
449 | ||
450 | list_for_each_xattr(entry, base_addr) { | |
451 | const struct xattr_handler *handler = | |
452 | f2fs_xattr_handler(entry->e_name_index); | |
453 | size_t size; | |
454 | ||
455 | if (!handler) | |
456 | continue; | |
457 | ||
458 | size = handler->list(dentry, buffer, rest, entry->e_name, | |
459 | entry->e_name_len, handler->flags); | |
460 | if (buffer && size > rest) { | |
461 | error = -ERANGE; | |
462 | goto cleanup; | |
463 | } | |
464 | ||
465 | if (buffer) | |
466 | buffer += size; | |
467 | rest -= size; | |
468 | } | |
469 | error = buffer_size - rest; | |
470 | cleanup: | |
471 | kzfree(base_addr); | |
472 | return error; | |
473 | } | |
474 | ||
475 | static int __f2fs_setxattr(struct inode *inode, int name_index, | |
476 | const char *name, const void *value, size_t value_len, | |
477 | struct page *ipage) | |
478 | { | |
479 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
480 | struct f2fs_xattr_entry *here, *last; | |
481 | void *base_addr; | |
482 | int found, newsize; | |
483 | size_t name_len; | |
484 | __u32 new_hsize; | |
485 | int error = -ENOMEM; | |
486 | ||
487 | if (name == NULL) | |
488 | return -EINVAL; | |
489 | ||
490 | if (value == NULL) | |
491 | value_len = 0; | |
492 | ||
493 | name_len = strlen(name); | |
494 | ||
495 | if (name_len > F2FS_NAME_LEN || value_len > MAX_VALUE_LEN(inode)) | |
496 | return -ERANGE; | |
497 | ||
498 | base_addr = read_all_xattrs(inode, ipage); | |
499 | if (!base_addr) | |
500 | goto exit; | |
501 | ||
502 | /* find entry with wanted name. */ | |
503 | here = __find_xattr(base_addr, name_index, name_len, name); | |
504 | ||
505 | found = IS_XATTR_LAST_ENTRY(here) ? 0 : 1; | |
506 | last = here; | |
507 | ||
508 | while (!IS_XATTR_LAST_ENTRY(last)) | |
509 | last = XATTR_NEXT_ENTRY(last); | |
510 | ||
511 | newsize = XATTR_ALIGN(sizeof(struct f2fs_xattr_entry) + | |
512 | name_len + value_len); | |
513 | ||
514 | /* 1. Check space */ | |
515 | if (value) { | |
516 | int free; | |
517 | /* | |
518 | * If value is NULL, it is remove operation. | |
519 | * In case of update operation, we caculate free. | |
520 | */ | |
521 | free = MIN_OFFSET(inode) - ((char *)last - (char *)base_addr); | |
522 | if (found) | |
523 | free = free - ENTRY_SIZE(here); | |
524 | ||
525 | if (free < newsize) { | |
526 | error = -ENOSPC; | |
527 | goto exit; | |
528 | } | |
529 | } | |
530 | ||
531 | /* 2. Remove old entry */ | |
532 | if (found) { | |
533 | /* | |
534 | * If entry is found, remove old entry. | |
535 | * If not found, remove operation is not needed. | |
536 | */ | |
537 | struct f2fs_xattr_entry *next = XATTR_NEXT_ENTRY(here); | |
538 | int oldsize = ENTRY_SIZE(here); | |
539 | ||
540 | memmove(here, next, (char *)last - (char *)next); | |
541 | last = (struct f2fs_xattr_entry *)((char *)last - oldsize); | |
542 | memset(last, 0, oldsize); | |
543 | } | |
544 | ||
545 | new_hsize = (char *)last - (char *)base_addr; | |
546 | ||
547 | /* 3. Write new entry */ | |
548 | if (value) { | |
549 | char *pval; | |
550 | /* | |
551 | * Before we come here, old entry is removed. | |
552 | * We just write new entry. | |
553 | */ | |
554 | memset(last, 0, newsize); | |
555 | last->e_name_index = name_index; | |
556 | last->e_name_len = name_len; | |
557 | memcpy(last->e_name, name, name_len); | |
558 | pval = last->e_name + name_len; | |
559 | memcpy(pval, value, value_len); | |
560 | last->e_value_size = cpu_to_le16(value_len); | |
561 | new_hsize += newsize; | |
562 | } | |
563 | ||
564 | error = write_all_xattrs(inode, new_hsize, base_addr, ipage); | |
565 | if (error) | |
566 | goto exit; | |
567 | ||
568 | if (is_inode_flag_set(fi, FI_ACL_MODE)) { | |
569 | inode->i_mode = fi->i_acl_mode; | |
570 | inode->i_ctime = CURRENT_TIME; | |
571 | clear_inode_flag(fi, FI_ACL_MODE); | |
572 | } | |
573 | ||
574 | if (ipage) | |
575 | update_inode(inode, ipage); | |
576 | else | |
577 | update_inode_page(inode); | |
578 | exit: | |
579 | kzfree(base_addr); | |
580 | return error; | |
581 | } | |
582 | ||
583 | int f2fs_setxattr(struct inode *inode, int name_index, const char *name, | |
584 | const void *value, size_t value_len, struct page *ipage) | |
585 | { | |
586 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
587 | int err; | |
588 | ||
589 | f2fs_balance_fs(sbi); | |
590 | ||
591 | f2fs_lock_op(sbi); | |
592 | err = __f2fs_setxattr(inode, name_index, name, value, value_len, ipage); | |
593 | f2fs_unlock_op(sbi); | |
594 | ||
595 | return err; | |
596 | } |