fs/f2fs/xattr.c

   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                 if (!capable(CAP_SYS_ADMIN))
  41                         return -EPERM;
  42                 break;
  43         case F2FS_XATTR_INDEX_SECURITY:
  44                 break;
  45         default:
  46                 return -EINVAL;
  47         }
  48         return f2fs_getxattr(inode, handler->flags, name,
  49                              buffer, size, NULL);
  50 }
  51
  52 static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
  53                 struct dentry *unused, struct inode *inode,
  54                 const char *name, const void *value,
  55                 size_t size, int flags)
  56 {
  57         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
  58
  59         switch (handler->flags) {
  60         case F2FS_XATTR_INDEX_USER:
  61                 if (!test_opt(sbi, XATTR_USER))
  62                         return -EOPNOTSUPP;
  63                 break;
  64         case F2FS_XATTR_INDEX_TRUSTED:
  65                 if (!capable(CAP_SYS_ADMIN))
  66                         return -EPERM;
  67                 break;
  68         case F2FS_XATTR_INDEX_SECURITY:
  69                 break;
  70         default:
  71                 return -EINVAL;
  72         }
  73         return f2fs_setxattr(inode, handler->flags, name,
  74                                         value, size, NULL, flags);
  75 }
  76
  77 static bool f2fs_xattr_user_list(struct dentry *dentry)
  78 {
  79         struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
  80
  81         return test_opt(sbi, XATTR_USER);
  82 }
  83
  84 static bool f2fs_xattr_trusted_list(struct dentry *dentry)
  85 {
  86         return capable(CAP_SYS_ADMIN);
  87 }
  88
  89 static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
  90                 struct dentry *unused, struct inode *inode,
  91                 const char *name, void *buffer, size_t size)
  92 {
  93         if (buffer)
  94                 *((char *)buffer) = F2FS_I(inode)->i_advise;
  95         return sizeof(char);
  96 }
  97
  98 static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
  99                 struct dentry *unused, struct inode *inode,
 100                 const char *name, const void *value,
 101                 size_t size, int flags)
 102 {
 103         if (!inode_owner_or_capable(inode))
 104                 return -EPERM;
 105         if (value == NULL)
 106                 return -EINVAL;
 107
 108         F2FS_I(inode)->i_advise |= *(char *)value;
 109         f2fs_mark_inode_dirty_sync(inode, true);
 110         return 0;
 111 }
 112
 113 #ifdef CONFIG_F2FS_FS_SECURITY
 114 static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
 115                 void *page)
 116 {
 117         const struct xattr *xattr;
 118         int err = 0;
 119
 120         for (xattr = xattr_array; xattr->name != NULL; xattr++) {
 121                 err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY,
 122                                 xattr->name, xattr->value,
 123                                 xattr->value_len, (struct page *)page, 0);
 124                 if (err < 0)
 125                         break;
 126         }
 127         return err;
 128 }
 129
 130 int f2fs_init_security(struct inode *inode, struct inode *dir,
 131                                 const struct qstr *qstr, struct page *ipage)
 132 {
 133         return security_inode_init_security(inode, dir, qstr,
 134                                 &f2fs_initxattrs, ipage);
 135 }
 136 #endif
 137
 138 const struct xattr_handler f2fs_xattr_user_handler = {
 139         .prefix = XATTR_USER_PREFIX,
 140         .flags  = F2FS_XATTR_INDEX_USER,
 141         .list   = f2fs_xattr_user_list,
 142         .get    = f2fs_xattr_generic_get,
 143         .set    = f2fs_xattr_generic_set,
 144 };
 145
 146 const struct xattr_handler f2fs_xattr_trusted_handler = {
 147         .prefix = XATTR_TRUSTED_PREFIX,
 148         .flags  = F2FS_XATTR_INDEX_TRUSTED,
 149         .list   = f2fs_xattr_trusted_list,
 150         .get    = f2fs_xattr_generic_get,
 151         .set    = f2fs_xattr_generic_set,
 152 };
 153
 154 const struct xattr_handler f2fs_xattr_advise_handler = {
 155         .name   = F2FS_SYSTEM_ADVISE_NAME,
 156         .flags  = F2FS_XATTR_INDEX_ADVISE,
 157         .get    = f2fs_xattr_advise_get,
 158         .set    = f2fs_xattr_advise_set,
 159 };
 160
 161 const struct xattr_handler f2fs_xattr_security_handler = {
 162         .prefix = XATTR_SECURITY_PREFIX,
 163         .flags  = F2FS_XATTR_INDEX_SECURITY,
 164         .get    = f2fs_xattr_generic_get,
 165         .set    = f2fs_xattr_generic_set,
 166 };
 167
 168 static const struct xattr_handler *f2fs_xattr_handler_map[] = {
 169         [F2FS_XATTR_INDEX_USER] = &f2fs_xattr_user_handler,
 170 #ifdef CONFIG_F2FS_FS_POSIX_ACL
 171         [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler,
 172         [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler,
 173 #endif
 174         [F2FS_XATTR_INDEX_TRUSTED] = &f2fs_xattr_trusted_handler,
 175 #ifdef CONFIG_F2FS_FS_SECURITY
 176         [F2FS_XATTR_INDEX_SECURITY] = &f2fs_xattr_security_handler,
 177 #endif
 178         [F2FS_XATTR_INDEX_ADVISE] = &f2fs_xattr_advise_handler,
 179 };
 180
 181 const struct xattr_handler *f2fs_xattr_handlers[] = {
 182         &f2fs_xattr_user_handler,
 183 #ifdef CONFIG_F2FS_FS_POSIX_ACL
 184         &posix_acl_access_xattr_handler,
 185         &posix_acl_default_xattr_handler,
 186 #endif
 187         &f2fs_xattr_trusted_handler,
 188 #ifdef CONFIG_F2FS_FS_SECURITY
 189         &f2fs_xattr_security_handler,
 190 #endif
 191         &f2fs_xattr_advise_handler,
 192         NULL,
 193 };
 194
 195 static inline const struct xattr_handler *f2fs_xattr_handler(int index)
 196 {
 197         const struct xattr_handler *handler = NULL;
 198
 199         if (index > 0 && index < ARRAY_SIZE(f2fs_xattr_handler_map))
 200                 handler = f2fs_xattr_handler_map[index];
 201         return handler;
 202 }
 203
 204 static struct f2fs_xattr_entry *__find_xattr(void *base_addr, int index,
 205                                         size_t len, const char *name)
 206 {
 207         struct f2fs_xattr_entry *entry;
 208
 209         list_for_each_xattr(entry, base_addr) {
 210                 if (entry->e_name_index != index)
 211                         continue;
 212                 if (entry->e_name_len != len)
 213                         continue;
 214                 if (!memcmp(entry->e_name, name, len))
 215                         break;
 216         }
 217         return entry;
 218 }
 219
 220 static struct f2fs_xattr_entry *__find_inline_xattr(void *base_addr,
 221                                         void **last_addr, int index,
 222                                         size_t len, const char *name)
 223 {
 224         struct f2fs_xattr_entry *entry;
 225         unsigned int inline_size = F2FS_INLINE_XATTR_ADDRS << 2;
 226
 227         list_for_each_xattr(entry, base_addr) {
 228                 if ((void *)entry + sizeof(__u32) > base_addr + inline_size ||
 229                         (void *)XATTR_NEXT_ENTRY(entry) + sizeof(__u32) >
 230                         base_addr + inline_size) {
 231                         *last_addr = entry;
 232                         return NULL;
 233                 }
 234                 if (entry->e_name_index != index)
 235                         continue;
 236                 if (entry->e_name_len != len)
 237                         continue;
 238                 if (!memcmp(entry->e_name, name, len))
 239                         break;
 240         }
 241         return entry;
 242 }
 243
 244 static int lookup_all_xattrs(struct inode *inode, struct page *ipage,
 245                                 unsigned int index, unsigned int len,
 246                                 const char *name, struct f2fs_xattr_entry **xe,
 247                                 void **base_addr)
 248 {
 249         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 250         void *cur_addr, *txattr_addr, *last_addr = NULL;
 251         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
 252         unsigned int size = xnid ? VALID_XATTR_BLOCK_SIZE : 0;
 253         unsigned int inline_size = 0;
 254         int err = 0;
 255
 256         inline_size = inline_xattr_size(inode);
 257
 258         if (!size && !inline_size)
 259                 return -ENODATA;
 260
 261         txattr_addr = kzalloc(inline_size + size + sizeof(__u32),
 262                                                         GFP_F2FS_ZERO);
 263         if (!txattr_addr)
 264                 return -ENOMEM;
 265
 266         /* read from inline xattr */
 267         if (inline_size) {
 268                 struct page *page = NULL;
 269                 void *inline_addr;
 270
 271                 if (ipage) {
 272                         inline_addr = inline_xattr_addr(ipage);
 273                 } else {
 274                         page = get_node_page(sbi, inode->i_ino);
 275                         if (IS_ERR(page)) {
 276                                 err = PTR_ERR(page);
 277                                 goto out;
 278                         }
 279                         inline_addr = inline_xattr_addr(page);
 280                 }
 281                 memcpy(txattr_addr, inline_addr, inline_size);
 282                 f2fs_put_page(page, 1);
 283
 284                 *xe = __find_inline_xattr(txattr_addr, &last_addr,
 285                                                 index, len, name);
 286                 if (*xe)
 287                         goto check;
 288         }
 289
 290         /* read from xattr node block */
 291         if (xnid) {
 292                 struct page *xpage;
 293                 void *xattr_addr;
 294
 295                 /* The inode already has an extended attribute block. */
 296                 xpage = get_node_page(sbi, xnid);
 297                 if (IS_ERR(xpage)) {
 298                         err = PTR_ERR(xpage);
 299                         goto out;
 300                 }
 301
 302                 xattr_addr = page_address(xpage);
 303                 memcpy(txattr_addr + inline_size, xattr_addr, size);
 304                 f2fs_put_page(xpage, 1);
 305         }
 306
 307         if (last_addr)
 308                 cur_addr = XATTR_HDR(last_addr) - 1;
 309         else
 310                 cur_addr = txattr_addr;
 311
 312         *xe = __find_xattr(cur_addr, index, len, name);
 313 check:
 314         if (IS_XATTR_LAST_ENTRY(*xe)) {
 315                 err = -ENODATA;
 316                 goto out;
 317         }
 318
 319         *base_addr = txattr_addr;
 320         return 0;
 321 out:
 322         kzfree(txattr_addr);
 323         return err;
 324 }
 325
 326 static int read_all_xattrs(struct inode *inode, struct page *ipage,
 327                                                         void **base_addr)
 328 {
 329         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 330         struct f2fs_xattr_header *header;
 331         size_t size = PAGE_SIZE, inline_size = 0;
 332         void *txattr_addr;
 333         int err;
 334
 335         inline_size = inline_xattr_size(inode);
 336
 337         txattr_addr = kzalloc(inline_size + size, GFP_F2FS_ZERO);
 338         if (!txattr_addr)
 339                 return -ENOMEM;
 340
 341         /* read from inline xattr */
 342         if (inline_size) {
 343                 struct page *page = NULL;
 344                 void *inline_addr;
 345
 346                 if (ipage) {
 347                         inline_addr = inline_xattr_addr(ipage);
 348                 } else {
 349                         page = get_node_page(sbi, inode->i_ino);
 350                         if (IS_ERR(page)) {
 351                                 err = PTR_ERR(page);
 352                                 goto fail;
 353                         }
 354                         inline_addr = inline_xattr_addr(page);
 355                 }
 356                 memcpy(txattr_addr, inline_addr, inline_size);
 357                 f2fs_put_page(page, 1);
 358         }
 359
 360         /* read from xattr node block */
 361         if (F2FS_I(inode)->i_xattr_nid) {
 362                 struct page *xpage;
 363                 void *xattr_addr;
 364
 365                 /* The inode already has an extended attribute block. */
 366                 xpage = get_node_page(sbi, F2FS_I(inode)->i_xattr_nid);
 367                 if (IS_ERR(xpage)) {
 368                         err = PTR_ERR(xpage);
 369                         goto fail;
 370                 }
 371
 372                 xattr_addr = page_address(xpage);
 373                 memcpy(txattr_addr + inline_size, xattr_addr, PAGE_SIZE);
 374                 f2fs_put_page(xpage, 1);
 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 = 0;
 396         void *xattr_addr;
 397         struct page *xpage;
 398         nid_t new_nid = 0;
 399         int err;
 400
 401         inline_size = inline_xattr_size(inode);
 402
 403         if (hsize > inline_size && !F2FS_I(inode)->i_xattr_nid)
 404                 if (!alloc_nid(sbi, &new_nid))
 405                         return -ENOSPC;
 406
 407         /* write to inline xattr */
 408         if (inline_size) {
 409                 struct page *page = NULL;
 410                 void *inline_addr;
 411
 412                 if (ipage) {
 413                         inline_addr = inline_xattr_addr(ipage);
 414                         f2fs_wait_on_page_writeback(ipage, NODE, true);
 415                         set_page_dirty(ipage);
 416                 } else {
 417                         page = get_node_page(sbi, inode->i_ino);
 418                         if (IS_ERR(page)) {
 419                                 alloc_nid_failed(sbi, new_nid);
 420                                 return PTR_ERR(page);
 421                         }
 422                         inline_addr = inline_xattr_addr(page);
 423                         f2fs_wait_on_page_writeback(page, NODE, true);
 424                 }
 425                 memcpy(inline_addr, txattr_addr, inline_size);
 426                 f2fs_put_page(page, 1);
 427
 428                 /* no need to use xattr node block */
 429                 if (hsize <= inline_size) {
 430                         err = truncate_xattr_node(inode, ipage);
 431                         alloc_nid_failed(sbi, new_nid);
 432                         return err;
 433                 }
 434         }
 435
 436         /* write to xattr node block */
 437         if (F2FS_I(inode)->i_xattr_nid) {
 438                 xpage = get_node_page(sbi, F2FS_I(inode)->i_xattr_nid);
 439                 if (IS_ERR(xpage)) {
 440                         alloc_nid_failed(sbi, new_nid);
 441                         return PTR_ERR(xpage);
 442                 }
 443                 f2fs_bug_on(sbi, new_nid);
 444                 f2fs_wait_on_page_writeback(xpage, NODE, true);
 445         } else {
 446                 struct dnode_of_data dn;
 447                 set_new_dnode(&dn, inode, NULL, NULL, new_nid);
 448                 xpage = new_node_page(&dn, XATTR_NODE_OFFSET, ipage);
 449                 if (IS_ERR(xpage)) {
 450                         alloc_nid_failed(sbi, new_nid);
 451                         return PTR_ERR(xpage);
 452                 }
 453                 alloc_nid_done(sbi, new_nid);
 454         }
 455
 456         xattr_addr = page_address(xpage);
 457         memcpy(xattr_addr, txattr_addr + inline_size, MAX_XATTR_BLOCK_SIZE);
 458         set_page_dirty(xpage);
 459         f2fs_put_page(xpage, 1);
 460
 461         return 0;
 462 }
 463
 464 int f2fs_getxattr(struct inode *inode, int index, const char *name,
 465                 void *buffer, size_t buffer_size, struct page *ipage)
 466 {
 467         struct f2fs_xattr_entry *entry = NULL;
 468         int error = 0;
 469         unsigned int size, len;
 470         void *base_addr = NULL;
 471
 472         if (name == NULL)
 473                 return -EINVAL;
 474
 475         len = strlen(name);
 476         if (len > F2FS_NAME_LEN)
 477                 return -ERANGE;
 478
 479         error = lookup_all_xattrs(inode, ipage, index, len, name,
 480                                 &entry, &base_addr);
 481         if (error)
 482                 return error;
 483
 484         size = le16_to_cpu(entry->e_value_size);
 485
 486         if (buffer && size > buffer_size) {
 487                 error = -ERANGE;
 488                 goto out;
 489         }
 490
 491         if (buffer) {
 492                 char *pval = entry->e_name + entry->e_name_len;
 493                 memcpy(buffer, pval, size);
 494         }
 495         error = size;
 496 out:
 497         kzfree(base_addr);
 498         return error;
 499 }
 500
 501 ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 502 {
 503         struct inode *inode = d_inode(dentry);
 504         struct f2fs_xattr_entry *entry;
 505         void *base_addr;
 506         int error = 0;
 507         size_t rest = buffer_size;
 508
 509         error = read_all_xattrs(inode, NULL, &base_addr);
 510         if (error)
 511                 return error;
 512
 513         list_for_each_xattr(entry, base_addr) {
 514                 const struct xattr_handler *handler =
 515                         f2fs_xattr_handler(entry->e_name_index);
 516                 const char *prefix;
 517                 size_t prefix_len;
 518                 size_t size;
 519
 520                 if (!handler || (handler->list && !handler->list(dentry)))
 521                         continue;
 522
 523                 prefix = handler->prefix ?: handler->name;
 524                 prefix_len = strlen(prefix);
 525                 size = prefix_len + entry->e_name_len + 1;
 526                 if (buffer) {
 527                         if (size > rest) {
 528                                 error = -ERANGE;
 529                                 goto cleanup;
 530                         }
 531                         memcpy(buffer, prefix, prefix_len);
 532                         buffer += prefix_len;
 533                         memcpy(buffer, entry->e_name, entry->e_name_len);
 534                         buffer += entry->e_name_len;
 535                         *buffer++ = 0;
 536                 }
 537                 rest -= size;
 538         }
 539         error = buffer_size - rest;
 540 cleanup:
 541         kzfree(base_addr);
 542         return error;
 543 }
 544
 545 static bool f2fs_xattr_value_same(struct f2fs_xattr_entry *entry,
 546                                         const void *value, size_t size)
 547 {
 548         void *pval = entry->e_name + entry->e_name_len;
 549         return (entry->e_value_size == size) && !memcmp(pval, value, size);
 550 }
 551
 552 static int __f2fs_setxattr(struct inode *inode, int index,
 553                         const char *name, const void *value, size_t size,
 554                         struct page *ipage, int flags)
 555 {
 556         struct f2fs_xattr_entry *here, *last;
 557         void *base_addr;
 558         int found, newsize;
 559         size_t len;
 560         __u32 new_hsize;
 561         int error = 0;
 562
 563         if (name == NULL)
 564                 return -EINVAL;
 565
 566         if (value == NULL)
 567                 size = 0;
 568
 569         len = strlen(name);
 570
 571         if (len > F2FS_NAME_LEN)
 572                 return -ERANGE;
 573
 574         if (size > MAX_VALUE_LEN(inode))
 575                 return -E2BIG;
 576
 577         error = read_all_xattrs(inode, ipage, &base_addr);
 578         if (error)
 579                 return error;
 580
 581         /* find entry with wanted name. */
 582         here = __find_xattr(base_addr, index, len, name);
 583
 584         found = IS_XATTR_LAST_ENTRY(here) ? 0 : 1;
 585
 586         if (found) {
 587                 if ((flags & XATTR_CREATE)) {
 588                         error = -EEXIST;
 589                         goto exit;
 590                 }
 591
 592                 if (f2fs_xattr_value_same(here, value, size))
 593                         goto exit;
 594         } else if ((flags & XATTR_REPLACE)) {
 595                 error = -ENODATA;
 596                 goto exit;
 597         }
 598
 599         last = here;
 600         while (!IS_XATTR_LAST_ENTRY(last))
 601                 last = XATTR_NEXT_ENTRY(last);
 602
 603         newsize = XATTR_ALIGN(sizeof(struct f2fs_xattr_entry) + len + size);
 604
 605         /* 1. Check space */
 606         if (value) {
 607                 int free;
 608                 /*
 609                  * If value is NULL, it is remove operation.
 610                  * In case of update operation, we calculate free.
 611                  */
 612                 free = MIN_OFFSET(inode) - ((char *)last - (char *)base_addr);
 613                 if (found)
 614                         free = free + ENTRY_SIZE(here);
 615
 616                 if (unlikely(free < newsize)) {
 617                         error = -E2BIG;
 618                         goto exit;
 619                 }
 620         }
 621
 622         /* 2. Remove old entry */
 623         if (found) {
 624                 /*
 625                  * If entry is found, remove old entry.
 626                  * If not found, remove operation is not needed.
 627                  */
 628                 struct f2fs_xattr_entry *next = XATTR_NEXT_ENTRY(here);
 629                 int oldsize = ENTRY_SIZE(here);
 630
 631                 memmove(here, next, (char *)last - (char *)next);
 632                 last = (struct f2fs_xattr_entry *)((char *)last - oldsize);
 633                 memset(last, 0, oldsize);
 634         }
 635
 636         new_hsize = (char *)last - (char *)base_addr;
 637
 638         /* 3. Write new entry */
 639         if (value) {
 640                 char *pval;
 641                 /*
 642                  * Before we come here, old entry is removed.
 643                  * We just write new entry.
 644                  */
 645                 last->e_name_index = index;
 646                 last->e_name_len = len;
 647                 memcpy(last->e_name, name, len);
 648                 pval = last->e_name + len;
 649                 memcpy(pval, value, size);
 650                 last->e_value_size = cpu_to_le16(size);
 651                 new_hsize += newsize;
 652         }
 653
 654         error = write_all_xattrs(inode, new_hsize, base_addr, ipage);
 655         if (error)
 656                 goto exit;
 657
 658         if (is_inode_flag_set(inode, FI_ACL_MODE)) {
 659                 inode->i_mode = F2FS_I(inode)->i_acl_mode;
 660                 inode->i_ctime = current_time(inode);
 661                 clear_inode_flag(inode, FI_ACL_MODE);
 662         }
 663         if (index == F2FS_XATTR_INDEX_ENCRYPTION &&
 664                         !strcmp(name, F2FS_XATTR_NAME_ENCRYPTION_CONTEXT))
 665                 f2fs_set_encrypted_inode(inode);
 666         f2fs_mark_inode_dirty_sync(inode, true);
 667         if (!error && S_ISDIR(inode->i_mode))
 668                 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_CP);
 669 exit:
 670         kzfree(base_addr);
 671         return error;
 672 }
 673
 674 int f2fs_setxattr(struct inode *inode, int index, const char *name,
 675                                 const void *value, size_t size,
 676                                 struct page *ipage, int flags)
 677 {
 678         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 679         int err;
 680
 681         /* this case is only from init_inode_metadata */
 682         if (ipage)
 683                 return __f2fs_setxattr(inode, index, name, value,
 684                                                 size, ipage, flags);
 685         f2fs_balance_fs(sbi, true);
 686
 687         f2fs_lock_op(sbi);
 688         /* protect xattr_ver */
 689         down_write(&F2FS_I(inode)->i_sem);
 690         err = __f2fs_setxattr(inode, index, name, value, size, ipage, flags);
 691         up_write(&F2FS_I(inode)->i_sem);
 692         f2fs_unlock_op(sbi);
 693
 694         f2fs_update_time(sbi, REQ_TIME);
 695         return err;
 696 }