fs/f2fs/namei.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * fs/f2fs/namei.c
   4  *
   5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   6  *             http://www.samsung.com/
   7  */
   8 #include <linux/fs.h>
   9 #include <linux/f2fs_fs.h>
  10 #include <linux/pagemap.h>
  11 #include <linux/sched.h>
  12 #include <linux/ctype.h>
  13 #include <linux/random.h>
  14 #include <linux/dcache.h>
  15 #include <linux/namei.h>
  16 #include <linux/quotaops.h>
  17
  18 #include "f2fs.h"
  19 #include "node.h"
  20 #include "segment.h"
  21 #include "xattr.h"
  22 #include "acl.h"
  23 #include <trace/events/f2fs.h>
  24
  25 static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
  26 {
  27         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
  28         nid_t ino;
  29         struct inode *inode;
  30         bool nid_free = false;
  31         bool encrypt = false;
  32         int xattr_size = 0;
  33         int err;
  34
  35         inode = new_inode(dir->i_sb);
  36         if (!inode)
  37                 return ERR_PTR(-ENOMEM);
  38
  39         f2fs_lock_op(sbi);
  40         if (!f2fs_alloc_nid(sbi, &ino)) {
  41                 f2fs_unlock_op(sbi);
  42                 err = -ENOSPC;
  43                 goto fail;
  44         }
  45         f2fs_unlock_op(sbi);
  46
  47         nid_free = true;
  48
  49         inode_init_owner(inode, dir, mode);
  50
  51         inode->i_ino = ino;
  52         inode->i_blocks = 0;
  53         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
  54         F2FS_I(inode)->i_crtime = inode->i_mtime;
  55         inode->i_generation = prandom_u32();
  56
  57         if (S_ISDIR(inode->i_mode))
  58                 F2FS_I(inode)->i_current_depth = 1;
  59
  60         err = insert_inode_locked(inode);
  61         if (err) {
  62                 err = -EINVAL;
  63                 goto fail;
  64         }
  65
  66         if (f2fs_sb_has_project_quota(sbi) &&
  67                 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
  68                 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
  69         else
  70                 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
  71                                                         F2FS_DEF_PROJID);
  72
  73         err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
  74         if (err)
  75                 goto fail_drop;
  76
  77         err = dquot_initialize(inode);
  78         if (err)
  79                 goto fail_drop;
  80
  81         set_inode_flag(inode, FI_NEW_INODE);
  82
  83         if (encrypt)
  84                 f2fs_set_encrypted_inode(inode);
  85
  86         if (f2fs_sb_has_extra_attr(sbi)) {
  87                 set_inode_flag(inode, FI_EXTRA_ATTR);
  88                 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
  89         }
  90
  91         if (test_opt(sbi, INLINE_XATTR))
  92                 set_inode_flag(inode, FI_INLINE_XATTR);
  93
  94         if (f2fs_may_inline_dentry(inode))
  95                 set_inode_flag(inode, FI_INLINE_DENTRY);
  96
  97         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
  98                 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
  99                 if (f2fs_has_inline_xattr(inode))
 100                         xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
 101                 /* Otherwise, will be 0 */
 102         } else if (f2fs_has_inline_xattr(inode) ||
 103                                 f2fs_has_inline_dentry(inode)) {
 104                 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 105         }
 106         F2FS_I(inode)->i_inline_xattr_size = xattr_size;
 107
 108         f2fs_init_extent_tree(inode, NULL);
 109
 110         F2FS_I(inode)->i_flags =
 111                 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
 112
 113         if (S_ISDIR(inode->i_mode))
 114                 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
 115
 116         if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 117                 set_inode_flag(inode, FI_PROJ_INHERIT);
 118
 119         if (f2fs_sb_has_compression(sbi)) {
 120                 /* Inherit the compression flag in directory */
 121                 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
 122                                         f2fs_may_compress(inode))
 123                         set_compress_context(inode);
 124         }
 125
 126         /* Should enable inline_data after compression set */
 127         if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
 128                 set_inode_flag(inode, FI_INLINE_DATA);
 129
 130         stat_inc_inline_xattr(inode);
 131         stat_inc_inline_inode(inode);
 132         stat_inc_inline_dir(inode);
 133
 134         f2fs_set_inode_flags(inode);
 135
 136         trace_f2fs_new_inode(inode, 0);
 137         return inode;
 138
 139 fail:
 140         trace_f2fs_new_inode(inode, err);
 141         make_bad_inode(inode);
 142         if (nid_free)
 143                 set_inode_flag(inode, FI_FREE_NID);
 144         iput(inode);
 145         return ERR_PTR(err);
 146 fail_drop:
 147         trace_f2fs_new_inode(inode, err);
 148         dquot_drop(inode);
 149         inode->i_flags |= S_NOQUOTA;
 150         if (nid_free)
 151                 set_inode_flag(inode, FI_FREE_NID);
 152         clear_nlink(inode);
 153         unlock_new_inode(inode);
 154         iput(inode);
 155         return ERR_PTR(err);
 156 }
 157
 158 static inline int is_extension_exist(const unsigned char *s, const char *sub,
 159                                                 bool tmp_ext)
 160 {
 161         size_t slen = strlen(s);
 162         size_t sublen = strlen(sub);
 163         int i;
 164
 165         if (sublen == 1 && *sub == '*')
 166                 return 1;
 167
 168         /*
 169          * filename format of multimedia file should be defined as:
 170          * "filename + '.' + extension + (optional: '.' + temp extension)".
 171          */
 172         if (slen < sublen + 2)
 173                 return 0;
 174
 175         if (!tmp_ext) {
 176                 /* file has no temp extension */
 177                 if (s[slen - sublen - 1] != '.')
 178                         return 0;
 179                 return !strncasecmp(s + slen - sublen, sub, sublen);
 180         }
 181
 182         for (i = 1; i < slen - sublen; i++) {
 183                 if (s[i] != '.')
 184                         continue;
 185                 if (!strncasecmp(s + i + 1, sub, sublen))
 186                         return 1;
 187         }
 188
 189         return 0;
 190 }
 191
 192 /*
 193  * Set file's temperature for hot/cold data separation
 194  */
 195 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
 196                 const unsigned char *name)
 197 {
 198         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 199         int i, cold_count, hot_count;
 200
 201         down_read(&sbi->sb_lock);
 202
 203         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 204         hot_count = sbi->raw_super->hot_ext_count;
 205
 206         for (i = 0; i < cold_count + hot_count; i++) {
 207                 if (is_extension_exist(name, extlist[i], true))
 208                         break;
 209         }
 210
 211         up_read(&sbi->sb_lock);
 212
 213         if (i == cold_count + hot_count)
 214                 return;
 215
 216         if (i < cold_count)
 217                 file_set_cold(inode);
 218         else
 219                 file_set_hot(inode);
 220 }
 221
 222 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 223                                                         bool hot, bool set)
 224 {
 225         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 226         int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 227         int hot_count = sbi->raw_super->hot_ext_count;
 228         int total_count = cold_count + hot_count;
 229         int start, count;
 230         int i;
 231
 232         if (set) {
 233                 if (total_count == F2FS_MAX_EXTENSION)
 234                         return -EINVAL;
 235         } else {
 236                 if (!hot && !cold_count)
 237                         return -EINVAL;
 238                 if (hot && !hot_count)
 239                         return -EINVAL;
 240         }
 241
 242         if (hot) {
 243                 start = cold_count;
 244                 count = total_count;
 245         } else {
 246                 start = 0;
 247                 count = cold_count;
 248         }
 249
 250         for (i = start; i < count; i++) {
 251                 if (strcmp(name, extlist[i]))
 252                         continue;
 253
 254                 if (set)
 255                         return -EINVAL;
 256
 257                 memcpy(extlist[i], extlist[i + 1],
 258                                 F2FS_EXTENSION_LEN * (total_count - i - 1));
 259                 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
 260                 if (hot)
 261                         sbi->raw_super->hot_ext_count = hot_count - 1;
 262                 else
 263                         sbi->raw_super->extension_count =
 264                                                 cpu_to_le32(cold_count - 1);
 265                 return 0;
 266         }
 267
 268         if (!set)
 269                 return -EINVAL;
 270
 271         if (hot) {
 272                 memcpy(extlist[count], name, strlen(name));
 273                 sbi->raw_super->hot_ext_count = hot_count + 1;
 274         } else {
 275                 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
 276
 277                 memcpy(buf, &extlist[cold_count],
 278                                 F2FS_EXTENSION_LEN * hot_count);
 279                 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
 280                 memcpy(extlist[cold_count], name, strlen(name));
 281                 memcpy(&extlist[cold_count + 1], buf,
 282                                 F2FS_EXTENSION_LEN * hot_count);
 283                 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
 284         }
 285         return 0;
 286 }
 287
 288 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
 289                                                 const unsigned char *name)
 290 {
 291         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 292         unsigned char (*ext)[F2FS_EXTENSION_LEN];
 293         unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
 294         int i, cold_count, hot_count;
 295
 296         if (!f2fs_sb_has_compression(sbi) ||
 297                         is_inode_flag_set(inode, FI_COMPRESSED_FILE) ||
 298                         F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
 299                         !f2fs_may_compress(inode))
 300                 return;
 301
 302         down_read(&sbi->sb_lock);
 303
 304         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 305         hot_count = sbi->raw_super->hot_ext_count;
 306
 307         for (i = cold_count; i < cold_count + hot_count; i++) {
 308                 if (is_extension_exist(name, extlist[i], false)) {
 309                         up_read(&sbi->sb_lock);
 310                         return;
 311                 }
 312         }
 313
 314         up_read(&sbi->sb_lock);
 315
 316         ext = F2FS_OPTION(sbi).extensions;
 317
 318         for (i = 0; i < ext_cnt; i++) {
 319                 if (!is_extension_exist(name, ext[i], false))
 320                         continue;
 321
 322                 /* Do not use inline_data with compression */
 323                 stat_dec_inline_inode(inode);
 324                 clear_inode_flag(inode, FI_INLINE_DATA);
 325                 set_compress_context(inode);
 326                 return;
 327         }
 328 }
 329
 330 static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 331                                                 bool excl)
 332 {
 333         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 334         struct inode *inode;
 335         nid_t ino = 0;
 336         int err;
 337
 338         if (unlikely(f2fs_cp_error(sbi)))
 339                 return -EIO;
 340         if (!f2fs_is_checkpoint_ready(sbi))
 341                 return -ENOSPC;
 342
 343         err = dquot_initialize(dir);
 344         if (err)
 345                 return err;
 346
 347         inode = f2fs_new_inode(dir, mode);
 348         if (IS_ERR(inode))
 349                 return PTR_ERR(inode);
 350
 351         if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
 352                 set_file_temperature(sbi, inode, dentry->d_name.name);
 353
 354         set_compress_inode(sbi, inode, dentry->d_name.name);
 355
 356         inode->i_op = &f2fs_file_inode_operations;
 357         inode->i_fop = &f2fs_file_operations;
 358         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 359         ino = inode->i_ino;
 360
 361         f2fs_lock_op(sbi);
 362         err = f2fs_add_link(dentry, inode);
 363         if (err)
 364                 goto out;
 365         f2fs_unlock_op(sbi);
 366
 367         f2fs_alloc_nid_done(sbi, ino);
 368
 369         d_instantiate_new(dentry, inode);
 370
 371         if (IS_DIRSYNC(dir))
 372                 f2fs_sync_fs(sbi->sb, 1);
 373
 374         f2fs_balance_fs(sbi, true);
 375         return 0;
 376 out:
 377         f2fs_handle_failed_inode(inode);
 378         return err;
 379 }
 380
 381 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
 382                 struct dentry *dentry)
 383 {
 384         struct inode *inode = d_inode(old_dentry);
 385         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 386         int err;
 387
 388         if (unlikely(f2fs_cp_error(sbi)))
 389                 return -EIO;
 390         if (!f2fs_is_checkpoint_ready(sbi))
 391                 return -ENOSPC;
 392
 393         err = fscrypt_prepare_link(old_dentry, dir, dentry);
 394         if (err)
 395                 return err;
 396
 397         if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
 398                         (!projid_eq(F2FS_I(dir)->i_projid,
 399                         F2FS_I(old_dentry->d_inode)->i_projid)))
 400                 return -EXDEV;
 401
 402         err = dquot_initialize(dir);
 403         if (err)
 404                 return err;
 405
 406         f2fs_balance_fs(sbi, true);
 407
 408         inode->i_ctime = current_time(inode);
 409         ihold(inode);
 410
 411         set_inode_flag(inode, FI_INC_LINK);
 412         f2fs_lock_op(sbi);
 413         err = f2fs_add_link(dentry, inode);
 414         if (err)
 415                 goto out;
 416         f2fs_unlock_op(sbi);
 417
 418         d_instantiate(dentry, inode);
 419
 420         if (IS_DIRSYNC(dir))
 421                 f2fs_sync_fs(sbi->sb, 1);
 422         return 0;
 423 out:
 424         clear_inode_flag(inode, FI_INC_LINK);
 425         iput(inode);
 426         f2fs_unlock_op(sbi);
 427         return err;
 428 }
 429
 430 struct dentry *f2fs_get_parent(struct dentry *child)
 431 {
 432         struct qstr dotdot = QSTR_INIT("..", 2);
 433         struct page *page;
 434         unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page);
 435         if (!ino) {
 436                 if (IS_ERR(page))
 437                         return ERR_CAST(page);
 438                 return ERR_PTR(-ENOENT);
 439         }
 440         return d_obtain_alias(f2fs_iget(child->d_sb, ino));
 441 }
 442
 443 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 444 {
 445         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 446         struct qstr dot = QSTR_INIT(".", 1);
 447         struct qstr dotdot = QSTR_INIT("..", 2);
 448         struct f2fs_dir_entry *de;
 449         struct page *page;
 450         int err = 0;
 451
 452         if (f2fs_readonly(sbi->sb)) {
 453                 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
 454                           dir->i_ino, pino);
 455                 return 0;
 456         }
 457
 458         err = dquot_initialize(dir);
 459         if (err)
 460                 return err;
 461
 462         f2fs_balance_fs(sbi, true);
 463
 464         f2fs_lock_op(sbi);
 465
 466         de = f2fs_find_entry(dir, &dot, &page);
 467         if (de) {
 468                 f2fs_put_page(page, 0);
 469         } else if (IS_ERR(page)) {
 470                 err = PTR_ERR(page);
 471                 goto out;
 472         } else {
 473                 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
 474                 if (err)
 475                         goto out;
 476         }
 477
 478         de = f2fs_find_entry(dir, &dotdot, &page);
 479         if (de)
 480                 f2fs_put_page(page, 0);
 481         else if (IS_ERR(page))
 482                 err = PTR_ERR(page);
 483         else
 484                 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
 485 out:
 486         if (!err)
 487                 clear_inode_flag(dir, FI_INLINE_DOTS);
 488
 489         f2fs_unlock_op(sbi);
 490         return err;
 491 }
 492
 493 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 494                 unsigned int flags)
 495 {
 496         struct inode *inode = NULL;
 497         struct f2fs_dir_entry *de;
 498         struct page *page;
 499         struct dentry *new;
 500         nid_t ino = -1;
 501         int err = 0;
 502         unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
 503         struct f2fs_filename fname;
 504
 505         trace_f2fs_lookup_start(dir, dentry, flags);
 506
 507         if (dentry->d_name.len > F2FS_NAME_LEN) {
 508                 err = -ENAMETOOLONG;
 509                 goto out;
 510         }
 511
 512         err = f2fs_prepare_lookup(dir, dentry, &fname);
 513         if (err == -ENOENT)
 514                 goto out_splice;
 515         if (err)
 516                 goto out;
 517         de = __f2fs_find_entry(dir, &fname, &page);
 518         f2fs_free_filename(&fname);
 519
 520         if (!de) {
 521                 if (IS_ERR(page)) {
 522                         err = PTR_ERR(page);
 523                         goto out;
 524                 }
 525                 err = -ENOENT;
 526                 goto out_splice;
 527         }
 528
 529         ino = le32_to_cpu(de->ino);
 530         f2fs_put_page(page, 0);
 531
 532         inode = f2fs_iget(dir->i_sb, ino);
 533         if (IS_ERR(inode)) {
 534                 err = PTR_ERR(inode);
 535                 goto out;
 536         }
 537
 538         if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
 539                 err = __recover_dot_dentries(dir, root_ino);
 540                 if (err)
 541                         goto out_iput;
 542         }
 543
 544         if (f2fs_has_inline_dots(inode)) {
 545                 err = __recover_dot_dentries(inode, dir->i_ino);
 546                 if (err)
 547                         goto out_iput;
 548         }
 549         if (IS_ENCRYPTED(dir) &&
 550             (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
 551             !fscrypt_has_permitted_context(dir, inode)) {
 552                 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
 553                           dir->i_ino, inode->i_ino);
 554                 err = -EPERM;
 555                 goto out_iput;
 556         }
 557 out_splice:
 558 #ifdef CONFIG_UNICODE
 559         if (!inode && IS_CASEFOLDED(dir)) {
 560                 /* Eventually we want to call d_add_ci(dentry, NULL)
 561                  * for negative dentries in the encoding case as
 562                  * well.  For now, prevent the negative dentry
 563                  * from being cached.
 564                  */
 565                 trace_f2fs_lookup_end(dir, dentry, ino, err);
 566                 return NULL;
 567         }
 568 #endif
 569         new = d_splice_alias(inode, dentry);
 570         err = PTR_ERR_OR_ZERO(new);
 571         trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
 572         return new;
 573 out_iput:
 574         iput(inode);
 575 out:
 576         trace_f2fs_lookup_end(dir, dentry, ino, err);
 577         return ERR_PTR(err);
 578 }
 579
 580 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 581 {
 582         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 583         struct inode *inode = d_inode(dentry);
 584         struct f2fs_dir_entry *de;
 585         struct page *page;
 586         int err;
 587
 588         trace_f2fs_unlink_enter(dir, dentry);
 589
 590         if (unlikely(f2fs_cp_error(sbi))) {
 591                 err = -EIO;
 592                 goto fail;
 593         }
 594
 595         err = dquot_initialize(dir);
 596         if (err)
 597                 goto fail;
 598         err = dquot_initialize(inode);
 599         if (err)
 600                 goto fail;
 601
 602         de = f2fs_find_entry(dir, &dentry->d_name, &page);
 603         if (!de) {
 604                 if (IS_ERR(page))
 605                         err = PTR_ERR(page);
 606                 goto fail;
 607         }
 608
 609         f2fs_balance_fs(sbi, true);
 610
 611         f2fs_lock_op(sbi);
 612         err = f2fs_acquire_orphan_inode(sbi);
 613         if (err) {
 614                 f2fs_unlock_op(sbi);
 615                 f2fs_put_page(page, 0);
 616                 goto fail;
 617         }
 618         f2fs_delete_entry(de, page, dir, inode);
 619 #ifdef CONFIG_UNICODE
 620         /* VFS negative dentries are incompatible with Encoding and
 621          * Case-insensitiveness. Eventually we'll want avoid
 622          * invalidating the dentries here, alongside with returning the
 623          * negative dentries at f2fs_lookup(), when it is better
 624          * supported by the VFS for the CI case.
 625          */
 626         if (IS_CASEFOLDED(dir))
 627                 d_invalidate(dentry);
 628 #endif
 629         f2fs_unlock_op(sbi);
 630
 631         if (IS_DIRSYNC(dir))
 632                 f2fs_sync_fs(sbi->sb, 1);
 633 fail:
 634         trace_f2fs_unlink_exit(inode, err);
 635         return err;
 636 }
 637
 638 static const char *f2fs_get_link(struct dentry *dentry,
 639                                  struct inode *inode,
 640                                  struct delayed_call *done)
 641 {
 642         const char *link = page_get_link(dentry, inode, done);
 643         if (!IS_ERR(link) && !*link) {
 644                 /* this is broken symlink case */
 645                 do_delayed_call(done);
 646                 clear_delayed_call(done);
 647                 link = ERR_PTR(-ENOENT);
 648         }
 649         return link;
 650 }
 651
 652 static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 653                                         const char *symname)
 654 {
 655         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 656         struct inode *inode;
 657         size_t len = strlen(symname);
 658         struct fscrypt_str disk_link;
 659         int err;
 660
 661         if (unlikely(f2fs_cp_error(sbi)))
 662                 return -EIO;
 663         if (!f2fs_is_checkpoint_ready(sbi))
 664                 return -ENOSPC;
 665
 666         err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
 667                                       &disk_link);
 668         if (err)
 669                 return err;
 670
 671         err = dquot_initialize(dir);
 672         if (err)
 673                 return err;
 674
 675         inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
 676         if (IS_ERR(inode))
 677                 return PTR_ERR(inode);
 678
 679         if (IS_ENCRYPTED(inode))
 680                 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 681         else
 682                 inode->i_op = &f2fs_symlink_inode_operations;
 683         inode_nohighmem(inode);
 684         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 685
 686         f2fs_lock_op(sbi);
 687         err = f2fs_add_link(dentry, inode);
 688         if (err)
 689                 goto out_f2fs_handle_failed_inode;
 690         f2fs_unlock_op(sbi);
 691         f2fs_alloc_nid_done(sbi, inode->i_ino);
 692
 693         err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
 694         if (err)
 695                 goto err_out;
 696
 697         err = page_symlink(inode, disk_link.name, disk_link.len);
 698
 699 err_out:
 700         d_instantiate_new(dentry, inode);
 701
 702         /*
 703          * Let's flush symlink data in order to avoid broken symlink as much as
 704          * possible. Nevertheless, fsyncing is the best way, but there is no
 705          * way to get a file descriptor in order to flush that.
 706          *
 707          * Note that, it needs to do dir->fsync to make this recoverable.
 708          * If the symlink path is stored into inline_data, there is no
 709          * performance regression.
 710          */
 711         if (!err) {
 712                 filemap_write_and_wait_range(inode->i_mapping, 0,
 713                                                         disk_link.len - 1);
 714
 715                 if (IS_DIRSYNC(dir))
 716                         f2fs_sync_fs(sbi->sb, 1);
 717         } else {
 718                 f2fs_unlink(dir, dentry);
 719         }
 720
 721         f2fs_balance_fs(sbi, true);
 722         goto out_free_encrypted_link;
 723
 724 out_f2fs_handle_failed_inode:
 725         f2fs_handle_failed_inode(inode);
 726 out_free_encrypted_link:
 727         if (disk_link.name != (unsigned char *)symname)
 728                 kfree(disk_link.name);
 729         return err;
 730 }
 731
 732 static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 733 {
 734         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 735         struct inode *inode;
 736         int err;
 737
 738         if (unlikely(f2fs_cp_error(sbi)))
 739                 return -EIO;
 740
 741         err = dquot_initialize(dir);
 742         if (err)
 743                 return err;
 744
 745         inode = f2fs_new_inode(dir, S_IFDIR | mode);
 746         if (IS_ERR(inode))
 747                 return PTR_ERR(inode);
 748
 749         inode->i_op = &f2fs_dir_inode_operations;
 750         inode->i_fop = &f2fs_dir_operations;
 751         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 752         mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 753
 754         set_inode_flag(inode, FI_INC_LINK);
 755         f2fs_lock_op(sbi);
 756         err = f2fs_add_link(dentry, inode);
 757         if (err)
 758                 goto out_fail;
 759         f2fs_unlock_op(sbi);
 760
 761         f2fs_alloc_nid_done(sbi, inode->i_ino);
 762
 763         d_instantiate_new(dentry, inode);
 764
 765         if (IS_DIRSYNC(dir))
 766                 f2fs_sync_fs(sbi->sb, 1);
 767
 768         f2fs_balance_fs(sbi, true);
 769         return 0;
 770
 771 out_fail:
 772         clear_inode_flag(inode, FI_INC_LINK);
 773         f2fs_handle_failed_inode(inode);
 774         return err;
 775 }
 776
 777 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
 778 {
 779         struct inode *inode = d_inode(dentry);
 780         if (f2fs_empty_dir(inode))
 781                 return f2fs_unlink(dir, dentry);
 782         return -ENOTEMPTY;
 783 }
 784
 785 static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 786                                 umode_t mode, dev_t rdev)
 787 {
 788         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 789         struct inode *inode;
 790         int err = 0;
 791
 792         if (unlikely(f2fs_cp_error(sbi)))
 793                 return -EIO;
 794         if (!f2fs_is_checkpoint_ready(sbi))
 795                 return -ENOSPC;
 796
 797         err = dquot_initialize(dir);
 798         if (err)
 799                 return err;
 800
 801         inode = f2fs_new_inode(dir, mode);
 802         if (IS_ERR(inode))
 803                 return PTR_ERR(inode);
 804
 805         init_special_inode(inode, inode->i_mode, rdev);
 806         inode->i_op = &f2fs_special_inode_operations;
 807
 808         f2fs_lock_op(sbi);
 809         err = f2fs_add_link(dentry, inode);
 810         if (err)
 811                 goto out;
 812         f2fs_unlock_op(sbi);
 813
 814         f2fs_alloc_nid_done(sbi, inode->i_ino);
 815
 816         d_instantiate_new(dentry, inode);
 817
 818         if (IS_DIRSYNC(dir))
 819                 f2fs_sync_fs(sbi->sb, 1);
 820
 821         f2fs_balance_fs(sbi, true);
 822         return 0;
 823 out:
 824         f2fs_handle_failed_inode(inode);
 825         return err;
 826 }
 827
 828 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 829                                         umode_t mode, struct inode **whiteout)
 830 {
 831         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 832         struct inode *inode;
 833         int err;
 834
 835         err = dquot_initialize(dir);
 836         if (err)
 837                 return err;
 838
 839         inode = f2fs_new_inode(dir, mode);
 840         if (IS_ERR(inode))
 841                 return PTR_ERR(inode);
 842
 843         if (whiteout) {
 844                 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
 845                 inode->i_op = &f2fs_special_inode_operations;
 846         } else {
 847                 inode->i_op = &f2fs_file_inode_operations;
 848                 inode->i_fop = &f2fs_file_operations;
 849                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 850         }
 851
 852         f2fs_lock_op(sbi);
 853         err = f2fs_acquire_orphan_inode(sbi);
 854         if (err)
 855                 goto out;
 856
 857         err = f2fs_do_tmpfile(inode, dir);
 858         if (err)
 859                 goto release_out;
 860
 861         /*
 862          * add this non-linked tmpfile to orphan list, in this way we could
 863          * remove all unused data of tmpfile after abnormal power-off.
 864          */
 865         f2fs_add_orphan_inode(inode);
 866         f2fs_alloc_nid_done(sbi, inode->i_ino);
 867
 868         if (whiteout) {
 869                 f2fs_i_links_write(inode, false);
 870
 871                 spin_lock(&inode->i_lock);
 872                 inode->i_state |= I_LINKABLE;
 873                 spin_unlock(&inode->i_lock);
 874
 875                 *whiteout = inode;
 876         } else {
 877                 d_tmpfile(dentry, inode);
 878         }
 879         /* link_count was changed by d_tmpfile as well. */
 880         f2fs_unlock_op(sbi);
 881         unlock_new_inode(inode);
 882
 883         f2fs_balance_fs(sbi, true);
 884         return 0;
 885
 886 release_out:
 887         f2fs_release_orphan_inode(sbi);
 888 out:
 889         f2fs_handle_failed_inode(inode);
 890         return err;
 891 }
 892
 893 static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
 894 {
 895         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 896
 897         if (unlikely(f2fs_cp_error(sbi)))
 898                 return -EIO;
 899         if (!f2fs_is_checkpoint_ready(sbi))
 900                 return -ENOSPC;
 901
 902         return __f2fs_tmpfile(dir, dentry, mode, NULL);
 903 }
 904
 905 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
 906 {
 907         if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
 908                 return -EIO;
 909
 910         return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
 911 }
 912
 913 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 914                         struct inode *new_dir, struct dentry *new_dentry,
 915                         unsigned int flags)
 916 {
 917         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
 918         struct inode *old_inode = d_inode(old_dentry);
 919         struct inode *new_inode = d_inode(new_dentry);
 920         struct inode *whiteout = NULL;
 921         struct page *old_dir_page = NULL;
 922         struct page *old_page, *new_page = NULL;
 923         struct f2fs_dir_entry *old_dir_entry = NULL;
 924         struct f2fs_dir_entry *old_entry;
 925         struct f2fs_dir_entry *new_entry;
 926         int err;
 927
 928         if (unlikely(f2fs_cp_error(sbi)))
 929                 return -EIO;
 930         if (!f2fs_is_checkpoint_ready(sbi))
 931                 return -ENOSPC;
 932
 933         if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
 934                         (!projid_eq(F2FS_I(new_dir)->i_projid,
 935                         F2FS_I(old_dentry->d_inode)->i_projid)))
 936                 return -EXDEV;
 937
 938         /*
 939          * If new_inode is null, the below renaming flow will
 940          * add a link in old_dir which can conver inline_dir.
 941          * After then, if we failed to get the entry due to other
 942          * reasons like ENOMEM, we had to remove the new entry.
 943          * Instead of adding such the error handling routine, let's
 944          * simply convert first here.
 945          */
 946         if (old_dir == new_dir && !new_inode) {
 947                 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
 948                 if (err)
 949                         return err;
 950         }
 951
 952         if (flags & RENAME_WHITEOUT) {
 953                 err = f2fs_create_whiteout(old_dir, &whiteout);
 954                 if (err)
 955                         return err;
 956         }
 957
 958         err = dquot_initialize(old_dir);
 959         if (err)
 960                 goto out;
 961
 962         err = dquot_initialize(new_dir);
 963         if (err)
 964                 goto out;
 965
 966         if (new_inode) {
 967                 err = dquot_initialize(new_inode);
 968                 if (err)
 969                         goto out;
 970         }
 971
 972         err = -ENOENT;
 973         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 974         if (!old_entry) {
 975                 if (IS_ERR(old_page))
 976                         err = PTR_ERR(old_page);
 977                 goto out;
 978         }
 979
 980         if (S_ISDIR(old_inode->i_mode)) {
 981                 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
 982                 if (!old_dir_entry) {
 983                         if (IS_ERR(old_dir_page))
 984                                 err = PTR_ERR(old_dir_page);
 985                         goto out_old;
 986                 }
 987         }
 988
 989         if (new_inode) {
 990
 991                 err = -ENOTEMPTY;
 992                 if (old_dir_entry && !f2fs_empty_dir(new_inode))
 993                         goto out_dir;
 994
 995                 err = -ENOENT;
 996                 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
 997                                                 &new_page);
 998                 if (!new_entry) {
 999                         if (IS_ERR(new_page))
1000                                 err = PTR_ERR(new_page);
1001                         goto out_dir;
1002                 }
1003
1004                 f2fs_balance_fs(sbi, true);
1005
1006                 f2fs_lock_op(sbi);
1007
1008                 err = f2fs_acquire_orphan_inode(sbi);
1009                 if (err)
1010                         goto put_out_dir;
1011
1012                 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1013                 new_page = NULL;
1014
1015                 new_inode->i_ctime = current_time(new_inode);
1016                 down_write(&F2FS_I(new_inode)->i_sem);
1017                 if (old_dir_entry)
1018                         f2fs_i_links_write(new_inode, false);
1019                 f2fs_i_links_write(new_inode, false);
1020                 up_write(&F2FS_I(new_inode)->i_sem);
1021
1022                 if (!new_inode->i_nlink)
1023                         f2fs_add_orphan_inode(new_inode);
1024                 else
1025                         f2fs_release_orphan_inode(sbi);
1026         } else {
1027                 f2fs_balance_fs(sbi, true);
1028
1029                 f2fs_lock_op(sbi);
1030
1031                 err = f2fs_add_link(new_dentry, old_inode);
1032                 if (err) {
1033                         f2fs_unlock_op(sbi);
1034                         goto out_dir;
1035                 }
1036
1037                 if (old_dir_entry)
1038                         f2fs_i_links_write(new_dir, true);
1039         }
1040
1041         down_write(&F2FS_I(old_inode)->i_sem);
1042         if (!old_dir_entry || whiteout)
1043                 file_lost_pino(old_inode);
1044         else
1045                 /* adjust dir's i_pino to pass fsck check */
1046                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1047         up_write(&F2FS_I(old_inode)->i_sem);
1048
1049         old_inode->i_ctime = current_time(old_inode);
1050         f2fs_mark_inode_dirty_sync(old_inode, false);
1051
1052         f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1053         old_page = NULL;
1054
1055         if (whiteout) {
1056                 set_inode_flag(whiteout, FI_INC_LINK);
1057                 err = f2fs_add_link(old_dentry, whiteout);
1058                 if (err)
1059                         goto put_out_dir;
1060
1061                 spin_lock(&whiteout->i_lock);
1062                 whiteout->i_state &= ~I_LINKABLE;
1063                 spin_unlock(&whiteout->i_lock);
1064
1065                 iput(whiteout);
1066         }
1067
1068         if (old_dir_entry) {
1069                 if (old_dir != new_dir)
1070                         f2fs_set_link(old_inode, old_dir_entry,
1071                                                 old_dir_page, new_dir);
1072                 else
1073                         f2fs_put_page(old_dir_page, 0);
1074                 f2fs_i_links_write(old_dir, false);
1075         }
1076         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1077                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1078                 if (S_ISDIR(old_inode->i_mode))
1079                         f2fs_add_ino_entry(sbi, old_inode->i_ino,
1080                                                         TRANS_DIR_INO);
1081         }
1082
1083         f2fs_unlock_op(sbi);
1084
1085         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1086                 f2fs_sync_fs(sbi->sb, 1);
1087
1088         f2fs_update_time(sbi, REQ_TIME);
1089         return 0;
1090
1091 put_out_dir:
1092         f2fs_unlock_op(sbi);
1093         f2fs_put_page(new_page, 0);
1094 out_dir:
1095         if (old_dir_entry)
1096                 f2fs_put_page(old_dir_page, 0);
1097 out_old:
1098         f2fs_put_page(old_page, 0);
1099 out:
1100         if (whiteout)
1101                 iput(whiteout);
1102         return err;
1103 }
1104
1105 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1106                              struct inode *new_dir, struct dentry *new_dentry)
1107 {
1108         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1109         struct inode *old_inode = d_inode(old_dentry);
1110         struct inode *new_inode = d_inode(new_dentry);
1111         struct page *old_dir_page, *new_dir_page;
1112         struct page *old_page, *new_page;
1113         struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1114         struct f2fs_dir_entry *old_entry, *new_entry;
1115         int old_nlink = 0, new_nlink = 0;
1116         int err;
1117
1118         if (unlikely(f2fs_cp_error(sbi)))
1119                 return -EIO;
1120         if (!f2fs_is_checkpoint_ready(sbi))
1121                 return -ENOSPC;
1122
1123         if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1124                         !projid_eq(F2FS_I(new_dir)->i_projid,
1125                         F2FS_I(old_dentry->d_inode)->i_projid)) ||
1126             (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1127                         !projid_eq(F2FS_I(old_dir)->i_projid,
1128                         F2FS_I(new_dentry->d_inode)->i_projid)))
1129                 return -EXDEV;
1130
1131         err = dquot_initialize(old_dir);
1132         if (err)
1133                 goto out;
1134
1135         err = dquot_initialize(new_dir);
1136         if (err)
1137                 goto out;
1138
1139         err = -ENOENT;
1140         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1141         if (!old_entry) {
1142                 if (IS_ERR(old_page))
1143                         err = PTR_ERR(old_page);
1144                 goto out;
1145         }
1146
1147         new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1148         if (!new_entry) {
1149                 if (IS_ERR(new_page))
1150                         err = PTR_ERR(new_page);
1151                 goto out_old;
1152         }
1153
1154         /* prepare for updating ".." directory entry info later */
1155         if (old_dir != new_dir) {
1156                 if (S_ISDIR(old_inode->i_mode)) {
1157                         old_dir_entry = f2fs_parent_dir(old_inode,
1158                                                         &old_dir_page);
1159                         if (!old_dir_entry) {
1160                                 if (IS_ERR(old_dir_page))
1161                                         err = PTR_ERR(old_dir_page);
1162                                 goto out_new;
1163                         }
1164                 }
1165
1166                 if (S_ISDIR(new_inode->i_mode)) {
1167                         new_dir_entry = f2fs_parent_dir(new_inode,
1168                                                         &new_dir_page);
1169                         if (!new_dir_entry) {
1170                                 if (IS_ERR(new_dir_page))
1171                                         err = PTR_ERR(new_dir_page);
1172                                 goto out_old_dir;
1173                         }
1174                 }
1175         }
1176
1177         /*
1178          * If cross rename between file and directory those are not
1179          * in the same directory, we will inc nlink of file's parent
1180          * later, so we should check upper boundary of its nlink.
1181          */
1182         if ((!old_dir_entry || !new_dir_entry) &&
1183                                 old_dir_entry != new_dir_entry) {
1184                 old_nlink = old_dir_entry ? -1 : 1;
1185                 new_nlink = -old_nlink;
1186                 err = -EMLINK;
1187                 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1188                         (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1189                         goto out_new_dir;
1190         }
1191
1192         f2fs_balance_fs(sbi, true);
1193
1194         f2fs_lock_op(sbi);
1195
1196         /* update ".." directory entry info of old dentry */
1197         if (old_dir_entry)
1198                 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1199
1200         /* update ".." directory entry info of new dentry */
1201         if (new_dir_entry)
1202                 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1203
1204         /* update directory entry info of old dir inode */
1205         f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1206
1207         down_write(&F2FS_I(old_inode)->i_sem);
1208         if (!old_dir_entry)
1209                 file_lost_pino(old_inode);
1210         else
1211                 /* adjust dir's i_pino to pass fsck check */
1212                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1213         up_write(&F2FS_I(old_inode)->i_sem);
1214
1215         old_dir->i_ctime = current_time(old_dir);
1216         if (old_nlink) {
1217                 down_write(&F2FS_I(old_dir)->i_sem);
1218                 f2fs_i_links_write(old_dir, old_nlink > 0);
1219                 up_write(&F2FS_I(old_dir)->i_sem);
1220         }
1221         f2fs_mark_inode_dirty_sync(old_dir, false);
1222
1223         /* update directory entry info of new dir inode */
1224         f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1225
1226         down_write(&F2FS_I(new_inode)->i_sem);
1227         if (!new_dir_entry)
1228                 file_lost_pino(new_inode);
1229         else
1230                 /* adjust dir's i_pino to pass fsck check */
1231                 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1232         up_write(&F2FS_I(new_inode)->i_sem);
1233
1234         new_dir->i_ctime = current_time(new_dir);
1235         if (new_nlink) {
1236                 down_write(&F2FS_I(new_dir)->i_sem);
1237                 f2fs_i_links_write(new_dir, new_nlink > 0);
1238                 up_write(&F2FS_I(new_dir)->i_sem);
1239         }
1240         f2fs_mark_inode_dirty_sync(new_dir, false);
1241
1242         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1243                 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1244                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1245         }
1246
1247         f2fs_unlock_op(sbi);
1248
1249         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1250                 f2fs_sync_fs(sbi->sb, 1);
1251
1252         f2fs_update_time(sbi, REQ_TIME);
1253         return 0;
1254 out_new_dir:
1255         if (new_dir_entry) {
1256                 f2fs_put_page(new_dir_page, 0);
1257         }
1258 out_old_dir:
1259         if (old_dir_entry) {
1260                 f2fs_put_page(old_dir_page, 0);
1261         }
1262 out_new:
1263         f2fs_put_page(new_page, 0);
1264 out_old:
1265         f2fs_put_page(old_page, 0);
1266 out:
1267         return err;
1268 }
1269
1270 static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry,
1271                         struct inode *new_dir, struct dentry *new_dentry,
1272                         unsigned int flags)
1273 {
1274         int err;
1275
1276         if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1277                 return -EINVAL;
1278
1279         err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1280                                      flags);
1281         if (err)
1282                 return err;
1283
1284         if (flags & RENAME_EXCHANGE) {
1285                 return f2fs_cross_rename(old_dir, old_dentry,
1286                                          new_dir, new_dentry);
1287         }
1288         /*
1289          * VFS has already handled the new dentry existence case,
1290          * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1291          */
1292         return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1293 }
1294
1295 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1296                                            struct inode *inode,
1297                                            struct delayed_call *done)
1298 {
1299         struct page *page;
1300         const char *target;
1301
1302         if (!dentry)
1303                 return ERR_PTR(-ECHILD);
1304
1305         page = read_mapping_page(inode->i_mapping, 0, NULL);
1306         if (IS_ERR(page))
1307                 return ERR_CAST(page);
1308
1309         target = fscrypt_get_symlink(inode, page_address(page),
1310                                      inode->i_sb->s_blocksize, done);
1311         put_page(page);
1312         return target;
1313 }
1314
1315 static int f2fs_encrypted_symlink_getattr(const struct path *path,
1316                                           struct kstat *stat, u32 request_mask,
1317                                           unsigned int query_flags)
1318 {
1319         f2fs_getattr(path, stat, request_mask, query_flags);
1320
1321         return fscrypt_symlink_getattr(path, stat);
1322 }
1323
1324 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1325         .get_link       = f2fs_encrypted_get_link,
1326         .getattr        = f2fs_encrypted_symlink_getattr,
1327         .setattr        = f2fs_setattr,
1328         .listxattr      = f2fs_listxattr,
1329 };
1330
1331 const struct inode_operations f2fs_dir_inode_operations = {
1332         .create         = f2fs_create,
1333         .lookup         = f2fs_lookup,
1334         .link           = f2fs_link,
1335         .unlink         = f2fs_unlink,
1336         .symlink        = f2fs_symlink,
1337         .mkdir          = f2fs_mkdir,
1338         .rmdir          = f2fs_rmdir,
1339         .mknod          = f2fs_mknod,
1340         .rename         = f2fs_rename2,
1341         .tmpfile        = f2fs_tmpfile,
1342         .getattr        = f2fs_getattr,
1343         .setattr        = f2fs_setattr,
1344         .get_acl        = f2fs_get_acl,
1345         .set_acl        = f2fs_set_acl,
1346         .listxattr      = f2fs_listxattr,
1347         .fiemap         = f2fs_fiemap,
1348 };
1349
1350 const struct inode_operations f2fs_symlink_inode_operations = {
1351         .get_link       = f2fs_get_link,
1352         .getattr        = f2fs_getattr,
1353         .setattr        = f2fs_setattr,
1354         .listxattr      = f2fs_listxattr,
1355 };
1356
1357 const struct inode_operations f2fs_special_inode_operations = {
1358         .getattr        = f2fs_getattr,
1359         .setattr        = f2fs_setattr,
1360         .get_acl        = f2fs_get_acl,
1361         .set_acl        = f2fs_set_acl,
1362         .listxattr      = f2fs_listxattr,
1363 };