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