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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * fs/f2fs/xattr.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 *
8 * Portions of this code from linux/fs/ext2/xattr.c
9 *
10 * Copyright (C) 2001-2003 Andreas Gruenbacher <agruen@suse.de>
11 *
12 * Fix by Harrison Xing <harrison@mountainviewdata.com>.
13 * Extended attributes for symlinks and special files added per
14 * suggestion of Luka Renko <luka.renko@hermes.si>.
15 * xattr consolidation Copyright (c) 2004 James Morris <jmorris@redhat.com>,
16 * Red Hat Inc.
17 */
18#include <linux/rwsem.h>
19#include <linux/f2fs_fs.h>
20#include <linux/security.h>
21#include <linux/posix_acl_xattr.h>
22#include "f2fs.h"
23#include "xattr.h"
24#include "segment.h"
25
26static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
27 struct dentry *unused, struct inode *inode,
28 const char *name, void *buffer, size_t size)
29{
30 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
31
32 switch (handler->flags) {
33 case F2FS_XATTR_INDEX_USER:
34 if (!test_opt(sbi, XATTR_USER))
35 return -EOPNOTSUPP;
36 break;
37 case F2FS_XATTR_INDEX_TRUSTED:
38 case F2FS_XATTR_INDEX_SECURITY:
39 break;
40 default:
41 return -EINVAL;
42 }
43 return f2fs_getxattr(inode, handler->flags, name,
44 buffer, size, NULL);
45}
46
47static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
48 struct dentry *unused, struct inode *inode,
49 const char *name, const void *value,
50 size_t size, int flags)
51{
52 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
53
54 switch (handler->flags) {
55 case F2FS_XATTR_INDEX_USER:
56 if (!test_opt(sbi, XATTR_USER))
57 return -EOPNOTSUPP;
58 break;
59 case F2FS_XATTR_INDEX_TRUSTED:
60 case F2FS_XATTR_INDEX_SECURITY:
61 break;
62 default:
63 return -EINVAL;
64 }
65 return f2fs_setxattr(inode, handler->flags, name,
66 value, size, NULL, flags);
67}
68
69static bool f2fs_xattr_user_list(struct dentry *dentry)
70{
71 struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
72
73 return test_opt(sbi, XATTR_USER);
74}
75
76static bool f2fs_xattr_trusted_list(struct dentry *dentry)
77{
78 return capable(CAP_SYS_ADMIN);
79}
80
81static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
82 struct dentry *unused, struct inode *inode,
83 const char *name, void *buffer, size_t size)
84{
85 if (buffer)
86 *((char *)buffer) = F2FS_I(inode)->i_advise;
87 return sizeof(char);
88}
89
90static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
91 struct dentry *unused, struct inode *inode,
92 const char *name, const void *value,
93 size_t size, int flags)
94{
95 unsigned char old_advise = F2FS_I(inode)->i_advise;
96 unsigned char new_advise;
97
98 if (!inode_owner_or_capable(inode))
99 return -EPERM;
100 if (value == NULL)
101 return -EINVAL;
102
103 new_advise = *(char *)value;
104 if (new_advise & ~FADVISE_MODIFIABLE_BITS)
105 return -EINVAL;
106
107 new_advise = new_advise & FADVISE_MODIFIABLE_BITS;
108 new_advise |= old_advise & ~FADVISE_MODIFIABLE_BITS;
109
110 F2FS_I(inode)->i_advise = new_advise;
111 f2fs_mark_inode_dirty_sync(inode, true);
112 return 0;
113}
114
115#ifdef CONFIG_F2FS_FS_SECURITY
116static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
117 void *page)
118{
119 const struct xattr *xattr;
120 int err = 0;
121
122 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
123 err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY,
124 xattr->name, xattr->value,
125 xattr->value_len, (struct page *)page, 0);
126 if (err < 0)
127 break;
128 }
129 return err;
130}
131
132int f2fs_init_security(struct inode *inode, struct inode *dir,
133 const struct qstr *qstr, struct page *ipage)
134{
135 return security_inode_init_security(inode, dir, qstr,
136 &f2fs_initxattrs, ipage);
137}
138#endif
139
140const struct xattr_handler f2fs_xattr_user_handler = {
141 .prefix = XATTR_USER_PREFIX,
142 .flags = F2FS_XATTR_INDEX_USER,
143 .list = f2fs_xattr_user_list,
144 .get = f2fs_xattr_generic_get,
145 .set = f2fs_xattr_generic_set,
146};
147
148const struct xattr_handler f2fs_xattr_trusted_handler = {
149 .prefix = XATTR_TRUSTED_PREFIX,
150 .flags = F2FS_XATTR_INDEX_TRUSTED,
151 .list = f2fs_xattr_trusted_list,
152 .get = f2fs_xattr_generic_get,
153 .set = f2fs_xattr_generic_set,
154};
155
156const struct xattr_handler f2fs_xattr_advise_handler = {
157 .name = F2FS_SYSTEM_ADVISE_NAME,
158 .flags = F2FS_XATTR_INDEX_ADVISE,
159 .get = f2fs_xattr_advise_get,
160 .set = f2fs_xattr_advise_set,
161};
162
163const struct xattr_handler f2fs_xattr_security_handler = {
164 .prefix = XATTR_SECURITY_PREFIX,
165 .flags = F2FS_XATTR_INDEX_SECURITY,
166 .get = f2fs_xattr_generic_get,
167 .set = f2fs_xattr_generic_set,
168};
169
170static const struct xattr_handler *f2fs_xattr_handler_map[] = {
171 [F2FS_XATTR_INDEX_USER] = &f2fs_xattr_user_handler,
172#ifdef CONFIG_F2FS_FS_POSIX_ACL
173 [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler,
174 [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler,
175#endif
176 [F2FS_XATTR_INDEX_TRUSTED] = &f2fs_xattr_trusted_handler,
177#ifdef CONFIG_F2FS_FS_SECURITY
178 [F2FS_XATTR_INDEX_SECURITY] = &f2fs_xattr_security_handler,
179#endif
180 [F2FS_XATTR_INDEX_ADVISE] = &f2fs_xattr_advise_handler,
181};
182
183const struct xattr_handler *f2fs_xattr_handlers[] = {
184 &f2fs_xattr_user_handler,
185#ifdef CONFIG_F2FS_FS_POSIX_ACL
186 &posix_acl_access_xattr_handler,
187 &posix_acl_default_xattr_handler,
188#endif
189 &f2fs_xattr_trusted_handler,
190#ifdef CONFIG_F2FS_FS_SECURITY
191 &f2fs_xattr_security_handler,
192#endif
193 &f2fs_xattr_advise_handler,
194 NULL,
195};
196
197static inline const struct xattr_handler *f2fs_xattr_handler(int index)
198{
199 const struct xattr_handler *handler = NULL;
200
201 if (index > 0 && index < ARRAY_SIZE(f2fs_xattr_handler_map))
202 handler = f2fs_xattr_handler_map[index];
203 return handler;
204}
205
206static struct f2fs_xattr_entry *__find_xattr(void *base_addr,
207 void *last_base_addr, int index,
208 size_t len, const char *name)
209{
210 struct f2fs_xattr_entry *entry;
211
212 list_for_each_xattr(entry, base_addr) {
213 if ((void *)(entry) + sizeof(__u32) > last_base_addr ||
214 (void *)XATTR_NEXT_ENTRY(entry) > last_base_addr)
215 return NULL;
216
217 if (entry->e_name_index != index)
218 continue;
219 if (entry->e_name_len != len)
220 continue;
221 if (!memcmp(entry->e_name, name, len))
222 break;
223 }
224 return entry;
225}
226
227static struct f2fs_xattr_entry *__find_inline_xattr(struct inode *inode,
228 void *base_addr, void **last_addr, int index,
229 size_t len, const char *name)
230{
231 struct f2fs_xattr_entry *entry;
232 unsigned int inline_size = inline_xattr_size(inode);
233 void *max_addr = base_addr + inline_size;
234
235 list_for_each_xattr(entry, base_addr) {
236 if ((void *)entry + sizeof(__u32) > max_addr ||
237 (void *)XATTR_NEXT_ENTRY(entry) > max_addr) {
238 *last_addr = entry;
239 return NULL;
240 }
241 if (entry->e_name_index != index)
242 continue;
243 if (entry->e_name_len != len)
244 continue;
245 if (!memcmp(entry->e_name, name, len))
246 break;
247 }
248
249 /* inline xattr header or entry across max inline xattr size */
250 if (IS_XATTR_LAST_ENTRY(entry) &&
251 (void *)entry + sizeof(__u32) > max_addr) {
252 *last_addr = entry;
253 return NULL;
254 }
255 return entry;
256}
257
258static int read_inline_xattr(struct inode *inode, struct page *ipage,
259 void *txattr_addr)
260{
261 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
262 unsigned int inline_size = inline_xattr_size(inode);
263 struct page *page = NULL;
264 void *inline_addr;
265
266 if (ipage) {
267 inline_addr = inline_xattr_addr(inode, ipage);
268 } else {
269 page = f2fs_get_node_page(sbi, inode->i_ino);
270 if (IS_ERR(page))
271 return PTR_ERR(page);
272
273 inline_addr = inline_xattr_addr(inode, page);
274 }
275 memcpy(txattr_addr, inline_addr, inline_size);
276 f2fs_put_page(page, 1);
277
278 return 0;
279}
280
281static int read_xattr_block(struct inode *inode, void *txattr_addr)
282{
283 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
284 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
285 unsigned int inline_size = inline_xattr_size(inode);
286 struct page *xpage;
287 void *xattr_addr;
288
289 /* The inode already has an extended attribute block. */
290 xpage = f2fs_get_node_page(sbi, xnid);
291 if (IS_ERR(xpage))
292 return PTR_ERR(xpage);
293
294 xattr_addr = page_address(xpage);
295 memcpy(txattr_addr + inline_size, xattr_addr, VALID_XATTR_BLOCK_SIZE);
296 f2fs_put_page(xpage, 1);
297
298 return 0;
299}
300
301static int lookup_all_xattrs(struct inode *inode, struct page *ipage,
302 unsigned int index, unsigned int len,
303 const char *name, struct f2fs_xattr_entry **xe,
304 void **base_addr, int *base_size)
305{
306 void *cur_addr, *txattr_addr, *last_txattr_addr;
307 void *last_addr = NULL;
308 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
309 unsigned int inline_size = inline_xattr_size(inode);
310 int err = 0;
311
312 if (!xnid && !inline_size)
313 return -ENODATA;
314
315 *base_size = XATTR_SIZE(xnid, inode) + XATTR_PADDING_SIZE;
316 txattr_addr = f2fs_kzalloc(F2FS_I_SB(inode), *base_size, GFP_NOFS);
317 if (!txattr_addr)
318 return -ENOMEM;
319
320 last_txattr_addr = (void *)txattr_addr + XATTR_SIZE(xnid, inode);
321
322 /* read from inline xattr */
323 if (inline_size) {
324 err = read_inline_xattr(inode, ipage, txattr_addr);
325 if (err)
326 goto out;
327
328 *xe = __find_inline_xattr(inode, txattr_addr, &last_addr,
329 index, len, name);
330 if (*xe) {
331 *base_size = inline_size;
332 goto check;
333 }
334 }
335
336 /* read from xattr node block */
337 if (xnid) {
338 err = read_xattr_block(inode, txattr_addr);
339 if (err)
340 goto out;
341 }
342
343 if (last_addr)
344 cur_addr = XATTR_HDR(last_addr) - 1;
345 else
346 cur_addr = txattr_addr;
347
348 *xe = __find_xattr(cur_addr, last_txattr_addr, index, len, name);
349 if (!*xe) {
350 f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
351 inode->i_ino);
352 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
353 err = -EFSCORRUPTED;
354 goto out;
355 }
356check:
357 if (IS_XATTR_LAST_ENTRY(*xe)) {
358 err = -ENODATA;
359 goto out;
360 }
361
362 *base_addr = txattr_addr;
363 return 0;
364out:
365 kvfree(txattr_addr);
366 return err;
367}
368
369static int read_all_xattrs(struct inode *inode, struct page *ipage,
370 void **base_addr)
371{
372 struct f2fs_xattr_header *header;
373 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
374 unsigned int size = VALID_XATTR_BLOCK_SIZE;
375 unsigned int inline_size = inline_xattr_size(inode);
376 void *txattr_addr;
377 int err;
378
379 txattr_addr = f2fs_kzalloc(F2FS_I_SB(inode),
380 inline_size + size + XATTR_PADDING_SIZE, GFP_NOFS);
381 if (!txattr_addr)
382 return -ENOMEM;
383
384 /* read from inline xattr */
385 if (inline_size) {
386 err = read_inline_xattr(inode, ipage, txattr_addr);
387 if (err)
388 goto fail;
389 }
390
391 /* read from xattr node block */
392 if (xnid) {
393 err = read_xattr_block(inode, txattr_addr);
394 if (err)
395 goto fail;
396 }
397
398 header = XATTR_HDR(txattr_addr);
399
400 /* never been allocated xattrs */
401 if (le32_to_cpu(header->h_magic) != F2FS_XATTR_MAGIC) {
402 header->h_magic = cpu_to_le32(F2FS_XATTR_MAGIC);
403 header->h_refcount = cpu_to_le32(1);
404 }
405 *base_addr = txattr_addr;
406 return 0;
407fail:
408 kvfree(txattr_addr);
409 return err;
410}
411
412static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
413 void *txattr_addr, struct page *ipage)
414{
415 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
416 size_t inline_size = inline_xattr_size(inode);
417 struct page *in_page = NULL;
418 void *xattr_addr;
419 void *inline_addr = NULL;
420 struct page *xpage;
421 nid_t new_nid = 0;
422 int err = 0;
423
424 if (hsize > inline_size && !F2FS_I(inode)->i_xattr_nid)
425 if (!f2fs_alloc_nid(sbi, &new_nid))
426 return -ENOSPC;
427
428 /* write to inline xattr */
429 if (inline_size) {
430 if (ipage) {
431 inline_addr = inline_xattr_addr(inode, ipage);
432 } else {
433 in_page = f2fs_get_node_page(sbi, inode->i_ino);
434 if (IS_ERR(in_page)) {
435 f2fs_alloc_nid_failed(sbi, new_nid);
436 return PTR_ERR(in_page);
437 }
438 inline_addr = inline_xattr_addr(inode, in_page);
439 }
440
441 f2fs_wait_on_page_writeback(ipage ? ipage : in_page,
442 NODE, true, true);
443 /* no need to use xattr node block */
444 if (hsize <= inline_size) {
445 err = f2fs_truncate_xattr_node(inode);
446 f2fs_alloc_nid_failed(sbi, new_nid);
447 if (err) {
448 f2fs_put_page(in_page, 1);
449 return err;
450 }
451 memcpy(inline_addr, txattr_addr, inline_size);
452 set_page_dirty(ipage ? ipage : in_page);
453 goto in_page_out;
454 }
455 }
456
457 /* write to xattr node block */
458 if (F2FS_I(inode)->i_xattr_nid) {
459 xpage = f2fs_get_node_page(sbi, F2FS_I(inode)->i_xattr_nid);
460 if (IS_ERR(xpage)) {
461 err = PTR_ERR(xpage);
462 f2fs_alloc_nid_failed(sbi, new_nid);
463 goto in_page_out;
464 }
465 f2fs_bug_on(sbi, new_nid);
466 f2fs_wait_on_page_writeback(xpage, NODE, true, true);
467 } else {
468 struct dnode_of_data dn;
469 set_new_dnode(&dn, inode, NULL, NULL, new_nid);
470 xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET);
471 if (IS_ERR(xpage)) {
472 err = PTR_ERR(xpage);
473 f2fs_alloc_nid_failed(sbi, new_nid);
474 goto in_page_out;
475 }
476 f2fs_alloc_nid_done(sbi, new_nid);
477 }
478 xattr_addr = page_address(xpage);
479
480 if (inline_size)
481 memcpy(inline_addr, txattr_addr, inline_size);
482 memcpy(xattr_addr, txattr_addr + inline_size, VALID_XATTR_BLOCK_SIZE);
483
484 if (inline_size)
485 set_page_dirty(ipage ? ipage : in_page);
486 set_page_dirty(xpage);
487
488 f2fs_put_page(xpage, 1);
489in_page_out:
490 f2fs_put_page(in_page, 1);
491 return err;
492}
493
494int f2fs_getxattr(struct inode *inode, int index, const char *name,
495 void *buffer, size_t buffer_size, struct page *ipage)
496{
497 struct f2fs_xattr_entry *entry = NULL;
498 int error = 0;
499 unsigned int size, len;
500 void *base_addr = NULL;
501 int base_size;
502
503 if (name == NULL)
504 return -EINVAL;
505
506 len = strlen(name);
507 if (len > F2FS_NAME_LEN)
508 return -ERANGE;
509
510 down_read(&F2FS_I(inode)->i_xattr_sem);
511 error = lookup_all_xattrs(inode, ipage, index, len, name,
512 &entry, &base_addr, &base_size);
513 up_read(&F2FS_I(inode)->i_xattr_sem);
514 if (error)
515 return error;
516
517 size = le16_to_cpu(entry->e_value_size);
518
519 if (buffer && size > buffer_size) {
520 error = -ERANGE;
521 goto out;
522 }
523
524 if (buffer) {
525 char *pval = entry->e_name + entry->e_name_len;
526
527 if (base_size - (pval - (char *)base_addr) < size) {
528 error = -ERANGE;
529 goto out;
530 }
531 memcpy(buffer, pval, size);
532 }
533 error = size;
534out:
535 kvfree(base_addr);
536 return error;
537}
538
539ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
540{
541 struct inode *inode = d_inode(dentry);
542 struct f2fs_xattr_entry *entry;
543 void *base_addr;
544 int error = 0;
545 size_t rest = buffer_size;
546
547 down_read(&F2FS_I(inode)->i_xattr_sem);
548 error = read_all_xattrs(inode, NULL, &base_addr);
549 up_read(&F2FS_I(inode)->i_xattr_sem);
550 if (error)
551 return error;
552
553 list_for_each_xattr(entry, base_addr) {
554 const struct xattr_handler *handler =
555 f2fs_xattr_handler(entry->e_name_index);
556 const char *prefix;
557 size_t prefix_len;
558 size_t size;
559
560 if (!handler || (handler->list && !handler->list(dentry)))
561 continue;
562
563 prefix = xattr_prefix(handler);
564 prefix_len = strlen(prefix);
565 size = prefix_len + entry->e_name_len + 1;
566 if (buffer) {
567 if (size > rest) {
568 error = -ERANGE;
569 goto cleanup;
570 }
571 memcpy(buffer, prefix, prefix_len);
572 buffer += prefix_len;
573 memcpy(buffer, entry->e_name, entry->e_name_len);
574 buffer += entry->e_name_len;
575 *buffer++ = 0;
576 }
577 rest -= size;
578 }
579 error = buffer_size - rest;
580cleanup:
581 kvfree(base_addr);
582 return error;
583}
584
585static bool f2fs_xattr_value_same(struct f2fs_xattr_entry *entry,
586 const void *value, size_t size)
587{
588 void *pval = entry->e_name + entry->e_name_len;
589
590 return (le16_to_cpu(entry->e_value_size) == size) &&
591 !memcmp(pval, value, size);
592}
593
594static int __f2fs_setxattr(struct inode *inode, int index,
595 const char *name, const void *value, size_t size,
596 struct page *ipage, int flags)
597{
598 struct f2fs_xattr_entry *here, *last;
599 void *base_addr, *last_base_addr;
600 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
601 int found, newsize;
602 size_t len;
603 __u32 new_hsize;
604 int error = 0;
605
606 if (name == NULL)
607 return -EINVAL;
608
609 if (value == NULL)
610 size = 0;
611
612 len = strlen(name);
613
614 if (len > F2FS_NAME_LEN)
615 return -ERANGE;
616
617 if (size > MAX_VALUE_LEN(inode))
618 return -E2BIG;
619
620 error = read_all_xattrs(inode, ipage, &base_addr);
621 if (error)
622 return error;
623
624 last_base_addr = (void *)base_addr + XATTR_SIZE(xnid, inode);
625
626 /* find entry with wanted name. */
627 here = __find_xattr(base_addr, last_base_addr, index, len, name);
628 if (!here) {
629 f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
630 inode->i_ino);
631 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
632 error = -EFSCORRUPTED;
633 goto exit;
634 }
635
636 found = IS_XATTR_LAST_ENTRY(here) ? 0 : 1;
637
638 if (found) {
639 if ((flags & XATTR_CREATE)) {
640 error = -EEXIST;
641 goto exit;
642 }
643
644 if (value && f2fs_xattr_value_same(here, value, size))
645 goto exit;
646 } else if ((flags & XATTR_REPLACE)) {
647 error = -ENODATA;
648 goto exit;
649 }
650
651 last = here;
652 while (!IS_XATTR_LAST_ENTRY(last))
653 last = XATTR_NEXT_ENTRY(last);
654
655 newsize = XATTR_ALIGN(sizeof(struct f2fs_xattr_entry) + len + size);
656
657 /* 1. Check space */
658 if (value) {
659 int free;
660 /*
661 * If value is NULL, it is remove operation.
662 * In case of update operation, we calculate free.
663 */
664 free = MIN_OFFSET(inode) - ((char *)last - (char *)base_addr);
665 if (found)
666 free = free + ENTRY_SIZE(here);
667
668 if (unlikely(free < newsize)) {
669 error = -E2BIG;
670 goto exit;
671 }
672 }
673
674 /* 2. Remove old entry */
675 if (found) {
676 /*
677 * If entry is found, remove old entry.
678 * If not found, remove operation is not needed.
679 */
680 struct f2fs_xattr_entry *next = XATTR_NEXT_ENTRY(here);
681 int oldsize = ENTRY_SIZE(here);
682
683 memmove(here, next, (char *)last - (char *)next);
684 last = (struct f2fs_xattr_entry *)((char *)last - oldsize);
685 memset(last, 0, oldsize);
686 }
687
688 new_hsize = (char *)last - (char *)base_addr;
689
690 /* 3. Write new entry */
691 if (value) {
692 char *pval;
693 /*
694 * Before we come here, old entry is removed.
695 * We just write new entry.
696 */
697 last->e_name_index = index;
698 last->e_name_len = len;
699 memcpy(last->e_name, name, len);
700 pval = last->e_name + len;
701 memcpy(pval, value, size);
702 last->e_value_size = cpu_to_le16(size);
703 new_hsize += newsize;
704 }
705
706 error = write_all_xattrs(inode, new_hsize, base_addr, ipage);
707 if (error)
708 goto exit;
709
710 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
711 inode->i_mode = F2FS_I(inode)->i_acl_mode;
712 inode->i_ctime = current_time(inode);
713 clear_inode_flag(inode, FI_ACL_MODE);
714 }
715 if (index == F2FS_XATTR_INDEX_ENCRYPTION &&
716 !strcmp(name, F2FS_XATTR_NAME_ENCRYPTION_CONTEXT))
717 f2fs_set_encrypted_inode(inode);
718 f2fs_mark_inode_dirty_sync(inode, true);
719 if (!error && S_ISDIR(inode->i_mode))
720 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_CP);
721exit:
722 kvfree(base_addr);
723 return error;
724}
725
726int f2fs_setxattr(struct inode *inode, int index, const char *name,
727 const void *value, size_t size,
728 struct page *ipage, int flags)
729{
730 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
731 int err;
732
733 if (unlikely(f2fs_cp_error(sbi)))
734 return -EIO;
735 if (!f2fs_is_checkpoint_ready(sbi))
736 return -ENOSPC;
737
738 err = dquot_initialize(inode);
739 if (err)
740 return err;
741
742 /* this case is only from f2fs_init_inode_metadata */
743 if (ipage)
744 return __f2fs_setxattr(inode, index, name, value,
745 size, ipage, flags);
746 f2fs_balance_fs(sbi, true);
747
748 f2fs_lock_op(sbi);
749 /* protect xattr_ver */
750 down_write(&F2FS_I(inode)->i_sem);
751 down_write(&F2FS_I(inode)->i_xattr_sem);
752 err = __f2fs_setxattr(inode, index, name, value, size, ipage, flags);
753 up_write(&F2FS_I(inode)->i_xattr_sem);
754 up_write(&F2FS_I(inode)->i_sem);
755 f2fs_unlock_op(sbi);
756
757 f2fs_update_time(sbi, REQ_TIME);
758 return err;
759}