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(&init_user_ns, 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 (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
  95                 set_inode_flag(inode, FI_INLINE_DATA);
  96         if (f2fs_may_inline_dentry(inode))
  97                 set_inode_flag(inode, FI_INLINE_DENTRY);
  98
  99         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 100                 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
 101                 if (f2fs_has_inline_xattr(inode))
 102                         xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
 103                 /* Otherwise, will be 0 */
 104         } else if (f2fs_has_inline_xattr(inode) ||
 105                                 f2fs_has_inline_dentry(inode)) {
 106                 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 107         }
 108         F2FS_I(inode)->i_inline_xattr_size = xattr_size;
 109
 110         f2fs_init_extent_tree(inode, NULL);
 111
 112         stat_inc_inline_xattr(inode);
 113         stat_inc_inline_inode(inode);
 114         stat_inc_inline_dir(inode);
 115
 116         F2FS_I(inode)->i_flags =
 117                 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
 118
 119         if (S_ISDIR(inode->i_mode))
 120                 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
 121
 122         if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 123                 set_inode_flag(inode, FI_PROJ_INHERIT);
 124
 125         if (f2fs_sb_has_compression(sbi)) {
 126                 /* Inherit the compression flag in directory */
 127                 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
 128                                         f2fs_may_compress(inode))
 129                         set_compress_context(inode);
 130         }
 131
 132         f2fs_set_inode_flags(inode);
 133
 134         trace_f2fs_new_inode(inode, 0);
 135         return inode;
 136
 137 fail:
 138         trace_f2fs_new_inode(inode, err);
 139         make_bad_inode(inode);
 140         if (nid_free)
 141                 set_inode_flag(inode, FI_FREE_NID);
 142         iput(inode);
 143         return ERR_PTR(err);
 144 fail_drop:
 145         trace_f2fs_new_inode(inode, err);
 146         dquot_drop(inode);
 147         inode->i_flags |= S_NOQUOTA;
 148         if (nid_free)
 149                 set_inode_flag(inode, FI_FREE_NID);
 150         clear_nlink(inode);
 151         unlock_new_inode(inode);
 152         iput(inode);
 153         return ERR_PTR(err);
 154 }
 155
 156 static inline int is_extension_exist(const unsigned char *s, const char *sub)
 157 {
 158         size_t slen = strlen(s);
 159         size_t sublen = strlen(sub);
 160         int i;
 161
 162         if (sublen == 1 && *sub == '*')
 163                 return 1;
 164
 165         /*
 166          * filename format of multimedia file should be defined as:
 167          * "filename + '.' + extension + (optional: '.' + temp extension)".
 168          */
 169         if (slen < sublen + 2)
 170                 return 0;
 171
 172         for (i = 1; i < slen - sublen; i++) {
 173                 if (s[i] != '.')
 174                         continue;
 175                 if (!strncasecmp(s + i + 1, sub, sublen))
 176                         return 1;
 177         }
 178
 179         return 0;
 180 }
 181
 182 /*
 183  * Set file's temperature for hot/cold data separation
 184  */
 185 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
 186                 const unsigned char *name)
 187 {
 188         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 189         int i, cold_count, hot_count;
 190
 191         down_read(&sbi->sb_lock);
 192
 193         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 194         hot_count = sbi->raw_super->hot_ext_count;
 195
 196         for (i = 0; i < cold_count + hot_count; i++) {
 197                 if (is_extension_exist(name, extlist[i]))
 198                         break;
 199         }
 200
 201         up_read(&sbi->sb_lock);
 202
 203         if (i == cold_count + hot_count)
 204                 return;
 205
 206         if (i < cold_count)
 207                 file_set_cold(inode);
 208         else
 209                 file_set_hot(inode);
 210 }
 211
 212 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 213                                                         bool hot, bool set)
 214 {
 215         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 216         int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 217         int hot_count = sbi->raw_super->hot_ext_count;
 218         int total_count = cold_count + hot_count;
 219         int start, count;
 220         int i;
 221
 222         if (set) {
 223                 if (total_count == F2FS_MAX_EXTENSION)
 224                         return -EINVAL;
 225         } else {
 226                 if (!hot && !cold_count)
 227                         return -EINVAL;
 228                 if (hot && !hot_count)
 229                         return -EINVAL;
 230         }
 231
 232         if (hot) {
 233                 start = cold_count;
 234                 count = total_count;
 235         } else {
 236                 start = 0;
 237                 count = cold_count;
 238         }
 239
 240         for (i = start; i < count; i++) {
 241                 if (strcmp(name, extlist[i]))
 242                         continue;
 243
 244                 if (set)
 245                         return -EINVAL;
 246
 247                 memcpy(extlist[i], extlist[i + 1],
 248                                 F2FS_EXTENSION_LEN * (total_count - i - 1));
 249                 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
 250                 if (hot)
 251                         sbi->raw_super->hot_ext_count = hot_count - 1;
 252                 else
 253                         sbi->raw_super->extension_count =
 254                                                 cpu_to_le32(cold_count - 1);
 255                 return 0;
 256         }
 257
 258         if (!set)
 259                 return -EINVAL;
 260
 261         if (hot) {
 262                 memcpy(extlist[count], name, strlen(name));
 263                 sbi->raw_super->hot_ext_count = hot_count + 1;
 264         } else {
 265                 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
 266
 267                 memcpy(buf, &extlist[cold_count],
 268                                 F2FS_EXTENSION_LEN * hot_count);
 269                 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
 270                 memcpy(extlist[cold_count], name, strlen(name));
 271                 memcpy(&extlist[cold_count + 1], buf,
 272                                 F2FS_EXTENSION_LEN * hot_count);
 273                 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
 274         }
 275         return 0;
 276 }
 277
 278 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
 279                                                 const unsigned char *name)
 280 {
 281         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 282         unsigned char (*ext)[F2FS_EXTENSION_LEN];
 283         unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
 284         int i, cold_count, hot_count;
 285
 286         if (!f2fs_sb_has_compression(sbi) ||
 287                         is_inode_flag_set(inode, FI_COMPRESSED_FILE) ||
 288                         F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
 289                         !f2fs_may_compress(inode))
 290                 return;
 291
 292         down_read(&sbi->sb_lock);
 293
 294         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 295         hot_count = sbi->raw_super->hot_ext_count;
 296
 297         for (i = cold_count; i < cold_count + hot_count; i++) {
 298                 if (is_extension_exist(name, extlist[i])) {
 299                         up_read(&sbi->sb_lock);
 300                         return;
 301                 }
 302         }
 303
 304         up_read(&sbi->sb_lock);
 305
 306         ext = F2FS_OPTION(sbi).extensions;
 307
 308         for (i = 0; i < ext_cnt; i++) {
 309                 if (!is_extension_exist(name, ext[i]))
 310                         continue;
 311
 312                 set_compress_context(inode);
 313                 return;
 314         }
 315 }
 316
 317 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 318                        struct dentry *dentry, umode_t mode, bool excl)
 319 {
 320         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 321         struct inode *inode;
 322         nid_t ino = 0;
 323         int err;
 324
 325         if (unlikely(f2fs_cp_error(sbi)))
 326                 return -EIO;
 327         if (!f2fs_is_checkpoint_ready(sbi))
 328                 return -ENOSPC;
 329
 330         err = dquot_initialize(dir);
 331         if (err)
 332                 return err;
 333
 334         inode = f2fs_new_inode(dir, mode);
 335         if (IS_ERR(inode))
 336                 return PTR_ERR(inode);
 337
 338         if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
 339                 set_file_temperature(sbi, inode, dentry->d_name.name);
 340
 341         set_compress_inode(sbi, inode, dentry->d_name.name);
 342
 343         inode->i_op = &f2fs_file_inode_operations;
 344         inode->i_fop = &f2fs_file_operations;
 345         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 346         ino = inode->i_ino;
 347
 348         f2fs_lock_op(sbi);
 349         err = f2fs_add_link(dentry, inode);
 350         if (err)
 351                 goto out;
 352         f2fs_unlock_op(sbi);
 353
 354         f2fs_alloc_nid_done(sbi, ino);
 355
 356         d_instantiate_new(dentry, inode);
 357
 358         if (IS_DIRSYNC(dir))
 359                 f2fs_sync_fs(sbi->sb, 1);
 360
 361         f2fs_balance_fs(sbi, true);
 362         return 0;
 363 out:
 364         f2fs_handle_failed_inode(inode);
 365         return err;
 366 }
 367
 368 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
 369                 struct dentry *dentry)
 370 {
 371         struct inode *inode = d_inode(old_dentry);
 372         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 373         int err;
 374
 375         if (unlikely(f2fs_cp_error(sbi)))
 376                 return -EIO;
 377         if (!f2fs_is_checkpoint_ready(sbi))
 378                 return -ENOSPC;
 379
 380         err = fscrypt_prepare_link(old_dentry, dir, dentry);
 381         if (err)
 382                 return err;
 383
 384         if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
 385                         (!projid_eq(F2FS_I(dir)->i_projid,
 386                         F2FS_I(old_dentry->d_inode)->i_projid)))
 387                 return -EXDEV;
 388
 389         err = dquot_initialize(dir);
 390         if (err)
 391                 return err;
 392
 393         f2fs_balance_fs(sbi, true);
 394
 395         inode->i_ctime = current_time(inode);
 396         ihold(inode);
 397
 398         set_inode_flag(inode, FI_INC_LINK);
 399         f2fs_lock_op(sbi);
 400         err = f2fs_add_link(dentry, inode);
 401         if (err)
 402                 goto out;
 403         f2fs_unlock_op(sbi);
 404
 405         d_instantiate(dentry, inode);
 406
 407         if (IS_DIRSYNC(dir))
 408                 f2fs_sync_fs(sbi->sb, 1);
 409         return 0;
 410 out:
 411         clear_inode_flag(inode, FI_INC_LINK);
 412         iput(inode);
 413         f2fs_unlock_op(sbi);
 414         return err;
 415 }
 416
 417 struct dentry *f2fs_get_parent(struct dentry *child)
 418 {
 419         struct page *page;
 420         unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
 421
 422         if (!ino) {
 423                 if (IS_ERR(page))
 424                         return ERR_CAST(page);
 425                 return ERR_PTR(-ENOENT);
 426         }
 427         return d_obtain_alias(f2fs_iget(child->d_sb, ino));
 428 }
 429
 430 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 431 {
 432         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 433         struct qstr dot = QSTR_INIT(".", 1);
 434         struct qstr dotdot = QSTR_INIT("..", 2);
 435         struct f2fs_dir_entry *de;
 436         struct page *page;
 437         int err = 0;
 438
 439         if (f2fs_readonly(sbi->sb)) {
 440                 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
 441                           dir->i_ino, pino);
 442                 return 0;
 443         }
 444
 445         err = dquot_initialize(dir);
 446         if (err)
 447                 return err;
 448
 449         f2fs_balance_fs(sbi, true);
 450
 451         f2fs_lock_op(sbi);
 452
 453         de = f2fs_find_entry(dir, &dot, &page);
 454         if (de) {
 455                 f2fs_put_page(page, 0);
 456         } else if (IS_ERR(page)) {
 457                 err = PTR_ERR(page);
 458                 goto out;
 459         } else {
 460                 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
 461                 if (err)
 462                         goto out;
 463         }
 464
 465         de = f2fs_find_entry(dir, &dotdot, &page);
 466         if (de)
 467                 f2fs_put_page(page, 0);
 468         else if (IS_ERR(page))
 469                 err = PTR_ERR(page);
 470         else
 471                 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
 472 out:
 473         if (!err)
 474                 clear_inode_flag(dir, FI_INLINE_DOTS);
 475
 476         f2fs_unlock_op(sbi);
 477         return err;
 478 }
 479
 480 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 481                 unsigned int flags)
 482 {
 483         struct inode *inode = NULL;
 484         struct f2fs_dir_entry *de;
 485         struct page *page;
 486         struct dentry *new;
 487         nid_t ino = -1;
 488         int err = 0;
 489         unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
 490         struct f2fs_filename fname;
 491
 492         trace_f2fs_lookup_start(dir, dentry, flags);
 493
 494         if (dentry->d_name.len > F2FS_NAME_LEN) {
 495                 err = -ENAMETOOLONG;
 496                 goto out;
 497         }
 498
 499         err = f2fs_prepare_lookup(dir, dentry, &fname);
 500         generic_set_encrypted_ci_d_ops(dentry);
 501         if (err == -ENOENT)
 502                 goto out_splice;
 503         if (err)
 504                 goto out;
 505         de = __f2fs_find_entry(dir, &fname, &page);
 506         f2fs_free_filename(&fname);
 507
 508         if (!de) {
 509                 if (IS_ERR(page)) {
 510                         err = PTR_ERR(page);
 511                         goto out;
 512                 }
 513                 err = -ENOENT;
 514                 goto out_splice;
 515         }
 516
 517         ino = le32_to_cpu(de->ino);
 518         f2fs_put_page(page, 0);
 519
 520         inode = f2fs_iget(dir->i_sb, ino);
 521         if (IS_ERR(inode)) {
 522                 err = PTR_ERR(inode);
 523                 goto out;
 524         }
 525
 526         if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
 527                 err = __recover_dot_dentries(dir, root_ino);
 528                 if (err)
 529                         goto out_iput;
 530         }
 531
 532         if (f2fs_has_inline_dots(inode)) {
 533                 err = __recover_dot_dentries(inode, dir->i_ino);
 534                 if (err)
 535                         goto out_iput;
 536         }
 537         if (IS_ENCRYPTED(dir) &&
 538             (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
 539             !fscrypt_has_permitted_context(dir, inode)) {
 540                 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
 541                           dir->i_ino, inode->i_ino);
 542                 err = -EPERM;
 543                 goto out_iput;
 544         }
 545 out_splice:
 546 #ifdef CONFIG_UNICODE
 547         if (!inode && IS_CASEFOLDED(dir)) {
 548                 /* Eventually we want to call d_add_ci(dentry, NULL)
 549                  * for negative dentries in the encoding case as
 550                  * well.  For now, prevent the negative dentry
 551                  * from being cached.
 552                  */
 553                 trace_f2fs_lookup_end(dir, dentry, ino, err);
 554                 return NULL;
 555         }
 556 #endif
 557         new = d_splice_alias(inode, dentry);
 558         err = PTR_ERR_OR_ZERO(new);
 559         trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
 560         return new;
 561 out_iput:
 562         iput(inode);
 563 out:
 564         trace_f2fs_lookup_end(dir, dentry, ino, err);
 565         return ERR_PTR(err);
 566 }
 567
 568 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 569 {
 570         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 571         struct inode *inode = d_inode(dentry);
 572         struct f2fs_dir_entry *de;
 573         struct page *page;
 574         int err;
 575
 576         trace_f2fs_unlink_enter(dir, dentry);
 577
 578         if (unlikely(f2fs_cp_error(sbi))) {
 579                 err = -EIO;
 580                 goto fail;
 581         }
 582
 583         err = dquot_initialize(dir);
 584         if (err)
 585                 goto fail;
 586         err = dquot_initialize(inode);
 587         if (err)
 588                 goto fail;
 589
 590         de = f2fs_find_entry(dir, &dentry->d_name, &page);
 591         if (!de) {
 592                 if (IS_ERR(page))
 593                         err = PTR_ERR(page);
 594                 goto fail;
 595         }
 596
 597         f2fs_balance_fs(sbi, true);
 598
 599         f2fs_lock_op(sbi);
 600         err = f2fs_acquire_orphan_inode(sbi);
 601         if (err) {
 602                 f2fs_unlock_op(sbi);
 603                 f2fs_put_page(page, 0);
 604                 goto fail;
 605         }
 606         f2fs_delete_entry(de, page, dir, inode);
 607 #ifdef CONFIG_UNICODE
 608         /* VFS negative dentries are incompatible with Encoding and
 609          * Case-insensitiveness. Eventually we'll want avoid
 610          * invalidating the dentries here, alongside with returning the
 611          * negative dentries at f2fs_lookup(), when it is better
 612          * supported by the VFS for the CI case.
 613          */
 614         if (IS_CASEFOLDED(dir))
 615                 d_invalidate(dentry);
 616 #endif
 617         f2fs_unlock_op(sbi);
 618
 619         if (IS_DIRSYNC(dir))
 620                 f2fs_sync_fs(sbi->sb, 1);
 621 fail:
 622         trace_f2fs_unlink_exit(inode, err);
 623         return err;
 624 }
 625
 626 static const char *f2fs_get_link(struct dentry *dentry,
 627                                  struct inode *inode,
 628                                  struct delayed_call *done)
 629 {
 630         const char *link = page_get_link(dentry, inode, done);
 631
 632         if (!IS_ERR(link) && !*link) {
 633                 /* this is broken symlink case */
 634                 do_delayed_call(done);
 635                 clear_delayed_call(done);
 636                 link = ERR_PTR(-ENOENT);
 637         }
 638         return link;
 639 }
 640
 641 static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
 642                         struct dentry *dentry, const char *symname)
 643 {
 644         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 645         struct inode *inode;
 646         size_t len = strlen(symname);
 647         struct fscrypt_str disk_link;
 648         int err;
 649
 650         if (unlikely(f2fs_cp_error(sbi)))
 651                 return -EIO;
 652         if (!f2fs_is_checkpoint_ready(sbi))
 653                 return -ENOSPC;
 654
 655         err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
 656                                       &disk_link);
 657         if (err)
 658                 return err;
 659
 660         err = dquot_initialize(dir);
 661         if (err)
 662                 return err;
 663
 664         inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
 665         if (IS_ERR(inode))
 666                 return PTR_ERR(inode);
 667
 668         if (IS_ENCRYPTED(inode))
 669                 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 670         else
 671                 inode->i_op = &f2fs_symlink_inode_operations;
 672         inode_nohighmem(inode);
 673         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 674
 675         f2fs_lock_op(sbi);
 676         err = f2fs_add_link(dentry, inode);
 677         if (err)
 678                 goto out_f2fs_handle_failed_inode;
 679         f2fs_unlock_op(sbi);
 680         f2fs_alloc_nid_done(sbi, inode->i_ino);
 681
 682         err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
 683         if (err)
 684                 goto err_out;
 685
 686         err = page_symlink(inode, disk_link.name, disk_link.len);
 687
 688 err_out:
 689         d_instantiate_new(dentry, inode);
 690
 691         /*
 692          * Let's flush symlink data in order to avoid broken symlink as much as
 693          * possible. Nevertheless, fsyncing is the best way, but there is no
 694          * way to get a file descriptor in order to flush that.
 695          *
 696          * Note that, it needs to do dir->fsync to make this recoverable.
 697          * If the symlink path is stored into inline_data, there is no
 698          * performance regression.
 699          */
 700         if (!err) {
 701                 filemap_write_and_wait_range(inode->i_mapping, 0,
 702                                                         disk_link.len - 1);
 703
 704                 if (IS_DIRSYNC(dir))
 705                         f2fs_sync_fs(sbi->sb, 1);
 706         } else {
 707                 f2fs_unlink(dir, dentry);
 708         }
 709
 710         f2fs_balance_fs(sbi, true);
 711         goto out_free_encrypted_link;
 712
 713 out_f2fs_handle_failed_inode:
 714         f2fs_handle_failed_inode(inode);
 715 out_free_encrypted_link:
 716         if (disk_link.name != (unsigned char *)symname)
 717                 kfree(disk_link.name);
 718         return err;
 719 }
 720
 721 static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
 722                       struct dentry *dentry, umode_t mode)
 723 {
 724         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 725         struct inode *inode;
 726         int err;
 727
 728         if (unlikely(f2fs_cp_error(sbi)))
 729                 return -EIO;
 730
 731         err = dquot_initialize(dir);
 732         if (err)
 733                 return err;
 734
 735         inode = f2fs_new_inode(dir, S_IFDIR | mode);
 736         if (IS_ERR(inode))
 737                 return PTR_ERR(inode);
 738
 739         inode->i_op = &f2fs_dir_inode_operations;
 740         inode->i_fop = &f2fs_dir_operations;
 741         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 742         inode_nohighmem(inode);
 743
 744         set_inode_flag(inode, FI_INC_LINK);
 745         f2fs_lock_op(sbi);
 746         err = f2fs_add_link(dentry, inode);
 747         if (err)
 748                 goto out_fail;
 749         f2fs_unlock_op(sbi);
 750
 751         f2fs_alloc_nid_done(sbi, inode->i_ino);
 752
 753         d_instantiate_new(dentry, inode);
 754
 755         if (IS_DIRSYNC(dir))
 756                 f2fs_sync_fs(sbi->sb, 1);
 757
 758         f2fs_balance_fs(sbi, true);
 759         return 0;
 760
 761 out_fail:
 762         clear_inode_flag(inode, FI_INC_LINK);
 763         f2fs_handle_failed_inode(inode);
 764         return err;
 765 }
 766
 767 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
 768 {
 769         struct inode *inode = d_inode(dentry);
 770
 771         if (f2fs_empty_dir(inode))
 772                 return f2fs_unlink(dir, dentry);
 773         return -ENOTEMPTY;
 774 }
 775
 776 static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
 777                       struct dentry *dentry, umode_t mode, dev_t rdev)
 778 {
 779         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 780         struct inode *inode;
 781         int err = 0;
 782
 783         if (unlikely(f2fs_cp_error(sbi)))
 784                 return -EIO;
 785         if (!f2fs_is_checkpoint_ready(sbi))
 786                 return -ENOSPC;
 787
 788         err = dquot_initialize(dir);
 789         if (err)
 790                 return err;
 791
 792         inode = f2fs_new_inode(dir, mode);
 793         if (IS_ERR(inode))
 794                 return PTR_ERR(inode);
 795
 796         init_special_inode(inode, inode->i_mode, rdev);
 797         inode->i_op = &f2fs_special_inode_operations;
 798
 799         f2fs_lock_op(sbi);
 800         err = f2fs_add_link(dentry, inode);
 801         if (err)
 802                 goto out;
 803         f2fs_unlock_op(sbi);
 804
 805         f2fs_alloc_nid_done(sbi, inode->i_ino);
 806
 807         d_instantiate_new(dentry, inode);
 808
 809         if (IS_DIRSYNC(dir))
 810                 f2fs_sync_fs(sbi->sb, 1);
 811
 812         f2fs_balance_fs(sbi, true);
 813         return 0;
 814 out:
 815         f2fs_handle_failed_inode(inode);
 816         return err;
 817 }
 818
 819 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 820                                         umode_t mode, struct inode **whiteout)
 821 {
 822         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 823         struct inode *inode;
 824         int err;
 825
 826         err = dquot_initialize(dir);
 827         if (err)
 828                 return err;
 829
 830         inode = f2fs_new_inode(dir, mode);
 831         if (IS_ERR(inode))
 832                 return PTR_ERR(inode);
 833
 834         if (whiteout) {
 835                 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
 836                 inode->i_op = &f2fs_special_inode_operations;
 837         } else {
 838                 inode->i_op = &f2fs_file_inode_operations;
 839                 inode->i_fop = &f2fs_file_operations;
 840                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 841         }
 842
 843         f2fs_lock_op(sbi);
 844         err = f2fs_acquire_orphan_inode(sbi);
 845         if (err)
 846                 goto out;
 847
 848         err = f2fs_do_tmpfile(inode, dir);
 849         if (err)
 850                 goto release_out;
 851
 852         /*
 853          * add this non-linked tmpfile to orphan list, in this way we could
 854          * remove all unused data of tmpfile after abnormal power-off.
 855          */
 856         f2fs_add_orphan_inode(inode);
 857         f2fs_alloc_nid_done(sbi, inode->i_ino);
 858
 859         if (whiteout) {
 860                 f2fs_i_links_write(inode, false);
 861
 862                 spin_lock(&inode->i_lock);
 863                 inode->i_state |= I_LINKABLE;
 864                 spin_unlock(&inode->i_lock);
 865
 866                 *whiteout = inode;
 867         } else {
 868                 d_tmpfile(dentry, inode);
 869         }
 870         /* link_count was changed by d_tmpfile as well. */
 871         f2fs_unlock_op(sbi);
 872         unlock_new_inode(inode);
 873
 874         f2fs_balance_fs(sbi, true);
 875         return 0;
 876
 877 release_out:
 878         f2fs_release_orphan_inode(sbi);
 879 out:
 880         f2fs_handle_failed_inode(inode);
 881         return err;
 882 }
 883
 884 static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
 885                         struct dentry *dentry, umode_t mode)
 886 {
 887         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 888
 889         if (unlikely(f2fs_cp_error(sbi)))
 890                 return -EIO;
 891         if (!f2fs_is_checkpoint_ready(sbi))
 892                 return -ENOSPC;
 893
 894         return __f2fs_tmpfile(dir, dentry, mode, NULL);
 895 }
 896
 897 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
 898 {
 899         if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
 900                 return -EIO;
 901
 902         return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
 903 }
 904
 905 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 906                         struct inode *new_dir, struct dentry *new_dentry,
 907                         unsigned int flags)
 908 {
 909         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
 910         struct inode *old_inode = d_inode(old_dentry);
 911         struct inode *new_inode = d_inode(new_dentry);
 912         struct inode *whiteout = NULL;
 913         struct page *old_dir_page = NULL;
 914         struct page *old_page, *new_page = NULL;
 915         struct f2fs_dir_entry *old_dir_entry = NULL;
 916         struct f2fs_dir_entry *old_entry;
 917         struct f2fs_dir_entry *new_entry;
 918         int err;
 919
 920         if (unlikely(f2fs_cp_error(sbi)))
 921                 return -EIO;
 922         if (!f2fs_is_checkpoint_ready(sbi))
 923                 return -ENOSPC;
 924
 925         if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
 926                         (!projid_eq(F2FS_I(new_dir)->i_projid,
 927                         F2FS_I(old_dentry->d_inode)->i_projid)))
 928                 return -EXDEV;
 929
 930         /*
 931          * If new_inode is null, the below renaming flow will
 932          * add a link in old_dir which can conver inline_dir.
 933          * After then, if we failed to get the entry due to other
 934          * reasons like ENOMEM, we had to remove the new entry.
 935          * Instead of adding such the error handling routine, let's
 936          * simply convert first here.
 937          */
 938         if (old_dir == new_dir && !new_inode) {
 939                 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
 940                 if (err)
 941                         return err;
 942         }
 943
 944         if (flags & RENAME_WHITEOUT) {
 945                 err = f2fs_create_whiteout(old_dir, &whiteout);
 946                 if (err)
 947                         return err;
 948         }
 949
 950         err = dquot_initialize(old_dir);
 951         if (err)
 952                 goto out;
 953
 954         err = dquot_initialize(new_dir);
 955         if (err)
 956                 goto out;
 957
 958         if (new_inode) {
 959                 err = dquot_initialize(new_inode);
 960                 if (err)
 961                         goto out;
 962         }
 963
 964         err = -ENOENT;
 965         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 966         if (!old_entry) {
 967                 if (IS_ERR(old_page))
 968                         err = PTR_ERR(old_page);
 969                 goto out;
 970         }
 971
 972         if (S_ISDIR(old_inode->i_mode)) {
 973                 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
 974                 if (!old_dir_entry) {
 975                         if (IS_ERR(old_dir_page))
 976                                 err = PTR_ERR(old_dir_page);
 977                         goto out_old;
 978                 }
 979         }
 980
 981         if (new_inode) {
 982
 983                 err = -ENOTEMPTY;
 984                 if (old_dir_entry && !f2fs_empty_dir(new_inode))
 985                         goto out_dir;
 986
 987                 err = -ENOENT;
 988                 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
 989                                                 &new_page);
 990                 if (!new_entry) {
 991                         if (IS_ERR(new_page))
 992                                 err = PTR_ERR(new_page);
 993                         goto out_dir;
 994                 }
 995
 996                 f2fs_balance_fs(sbi, true);
 997
 998                 f2fs_lock_op(sbi);
 999
1000                 err = f2fs_acquire_orphan_inode(sbi);
1001                 if (err)
1002                         goto put_out_dir;
1003
1004                 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1005                 new_page = NULL;
1006
1007                 new_inode->i_ctime = current_time(new_inode);
1008                 down_write(&F2FS_I(new_inode)->i_sem);
1009                 if (old_dir_entry)
1010                         f2fs_i_links_write(new_inode, false);
1011                 f2fs_i_links_write(new_inode, false);
1012                 up_write(&F2FS_I(new_inode)->i_sem);
1013
1014                 if (!new_inode->i_nlink)
1015                         f2fs_add_orphan_inode(new_inode);
1016                 else
1017                         f2fs_release_orphan_inode(sbi);
1018         } else {
1019                 f2fs_balance_fs(sbi, true);
1020
1021                 f2fs_lock_op(sbi);
1022
1023                 err = f2fs_add_link(new_dentry, old_inode);
1024                 if (err) {
1025                         f2fs_unlock_op(sbi);
1026                         goto out_dir;
1027                 }
1028
1029                 if (old_dir_entry)
1030                         f2fs_i_links_write(new_dir, true);
1031         }
1032
1033         down_write(&F2FS_I(old_inode)->i_sem);
1034         if (!old_dir_entry || whiteout)
1035                 file_lost_pino(old_inode);
1036         else
1037                 /* adjust dir's i_pino to pass fsck check */
1038                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1039         up_write(&F2FS_I(old_inode)->i_sem);
1040
1041         old_inode->i_ctime = current_time(old_inode);
1042         f2fs_mark_inode_dirty_sync(old_inode, false);
1043
1044         f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1045         old_page = NULL;
1046
1047         if (whiteout) {
1048                 set_inode_flag(whiteout, FI_INC_LINK);
1049                 err = f2fs_add_link(old_dentry, whiteout);
1050                 if (err)
1051                         goto put_out_dir;
1052
1053                 spin_lock(&whiteout->i_lock);
1054                 whiteout->i_state &= ~I_LINKABLE;
1055                 spin_unlock(&whiteout->i_lock);
1056
1057                 iput(whiteout);
1058         }
1059
1060         if (old_dir_entry) {
1061                 if (old_dir != new_dir && !whiteout)
1062                         f2fs_set_link(old_inode, old_dir_entry,
1063                                                 old_dir_page, new_dir);
1064                 else
1065                         f2fs_put_page(old_dir_page, 0);
1066                 f2fs_i_links_write(old_dir, false);
1067         }
1068         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1069                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1070                 if (S_ISDIR(old_inode->i_mode))
1071                         f2fs_add_ino_entry(sbi, old_inode->i_ino,
1072                                                         TRANS_DIR_INO);
1073         }
1074
1075         f2fs_unlock_op(sbi);
1076
1077         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1078                 f2fs_sync_fs(sbi->sb, 1);
1079
1080         f2fs_update_time(sbi, REQ_TIME);
1081         return 0;
1082
1083 put_out_dir:
1084         f2fs_unlock_op(sbi);
1085         f2fs_put_page(new_page, 0);
1086 out_dir:
1087         if (old_dir_entry)
1088                 f2fs_put_page(old_dir_page, 0);
1089 out_old:
1090         f2fs_put_page(old_page, 0);
1091 out:
1092         if (whiteout)
1093                 iput(whiteout);
1094         return err;
1095 }
1096
1097 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1098                              struct inode *new_dir, struct dentry *new_dentry)
1099 {
1100         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1101         struct inode *old_inode = d_inode(old_dentry);
1102         struct inode *new_inode = d_inode(new_dentry);
1103         struct page *old_dir_page, *new_dir_page;
1104         struct page *old_page, *new_page;
1105         struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1106         struct f2fs_dir_entry *old_entry, *new_entry;
1107         int old_nlink = 0, new_nlink = 0;
1108         int err;
1109
1110         if (unlikely(f2fs_cp_error(sbi)))
1111                 return -EIO;
1112         if (!f2fs_is_checkpoint_ready(sbi))
1113                 return -ENOSPC;
1114
1115         if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1116                         !projid_eq(F2FS_I(new_dir)->i_projid,
1117                         F2FS_I(old_dentry->d_inode)->i_projid)) ||
1118             (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1119                         !projid_eq(F2FS_I(old_dir)->i_projid,
1120                         F2FS_I(new_dentry->d_inode)->i_projid)))
1121                 return -EXDEV;
1122
1123         err = dquot_initialize(old_dir);
1124         if (err)
1125                 goto out;
1126
1127         err = dquot_initialize(new_dir);
1128         if (err)
1129                 goto out;
1130
1131         err = -ENOENT;
1132         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1133         if (!old_entry) {
1134                 if (IS_ERR(old_page))
1135                         err = PTR_ERR(old_page);
1136                 goto out;
1137         }
1138
1139         new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1140         if (!new_entry) {
1141                 if (IS_ERR(new_page))
1142                         err = PTR_ERR(new_page);
1143                 goto out_old;
1144         }
1145
1146         /* prepare for updating ".." directory entry info later */
1147         if (old_dir != new_dir) {
1148                 if (S_ISDIR(old_inode->i_mode)) {
1149                         old_dir_entry = f2fs_parent_dir(old_inode,
1150                                                         &old_dir_page);
1151                         if (!old_dir_entry) {
1152                                 if (IS_ERR(old_dir_page))
1153                                         err = PTR_ERR(old_dir_page);
1154                                 goto out_new;
1155                         }
1156                 }
1157
1158                 if (S_ISDIR(new_inode->i_mode)) {
1159                         new_dir_entry = f2fs_parent_dir(new_inode,
1160                                                         &new_dir_page);
1161                         if (!new_dir_entry) {
1162                                 if (IS_ERR(new_dir_page))
1163                                         err = PTR_ERR(new_dir_page);
1164                                 goto out_old_dir;
1165                         }
1166                 }
1167         }
1168
1169         /*
1170          * If cross rename between file and directory those are not
1171          * in the same directory, we will inc nlink of file's parent
1172          * later, so we should check upper boundary of its nlink.
1173          */
1174         if ((!old_dir_entry || !new_dir_entry) &&
1175                                 old_dir_entry != new_dir_entry) {
1176                 old_nlink = old_dir_entry ? -1 : 1;
1177                 new_nlink = -old_nlink;
1178                 err = -EMLINK;
1179                 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1180                         (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1181                         goto out_new_dir;
1182         }
1183
1184         f2fs_balance_fs(sbi, true);
1185
1186         f2fs_lock_op(sbi);
1187
1188         /* update ".." directory entry info of old dentry */
1189         if (old_dir_entry)
1190                 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1191
1192         /* update ".." directory entry info of new dentry */
1193         if (new_dir_entry)
1194                 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1195
1196         /* update directory entry info of old dir inode */
1197         f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1198
1199         down_write(&F2FS_I(old_inode)->i_sem);
1200         if (!old_dir_entry)
1201                 file_lost_pino(old_inode);
1202         else
1203                 /* adjust dir's i_pino to pass fsck check */
1204                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1205         up_write(&F2FS_I(old_inode)->i_sem);
1206
1207         old_dir->i_ctime = current_time(old_dir);
1208         if (old_nlink) {
1209                 down_write(&F2FS_I(old_dir)->i_sem);
1210                 f2fs_i_links_write(old_dir, old_nlink > 0);
1211                 up_write(&F2FS_I(old_dir)->i_sem);
1212         }
1213         f2fs_mark_inode_dirty_sync(old_dir, false);
1214
1215         /* update directory entry info of new dir inode */
1216         f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1217
1218         down_write(&F2FS_I(new_inode)->i_sem);
1219         if (!new_dir_entry)
1220                 file_lost_pino(new_inode);
1221         else
1222                 /* adjust dir's i_pino to pass fsck check */
1223                 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1224         up_write(&F2FS_I(new_inode)->i_sem);
1225
1226         new_dir->i_ctime = current_time(new_dir);
1227         if (new_nlink) {
1228                 down_write(&F2FS_I(new_dir)->i_sem);
1229                 f2fs_i_links_write(new_dir, new_nlink > 0);
1230                 up_write(&F2FS_I(new_dir)->i_sem);
1231         }
1232         f2fs_mark_inode_dirty_sync(new_dir, false);
1233
1234         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1235                 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1236                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1237         }
1238
1239         f2fs_unlock_op(sbi);
1240
1241         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1242                 f2fs_sync_fs(sbi->sb, 1);
1243
1244         f2fs_update_time(sbi, REQ_TIME);
1245         return 0;
1246 out_new_dir:
1247         if (new_dir_entry) {
1248                 f2fs_put_page(new_dir_page, 0);
1249         }
1250 out_old_dir:
1251         if (old_dir_entry) {
1252                 f2fs_put_page(old_dir_page, 0);
1253         }
1254 out_new:
1255         f2fs_put_page(new_page, 0);
1256 out_old:
1257         f2fs_put_page(old_page, 0);
1258 out:
1259         return err;
1260 }
1261
1262 static int f2fs_rename2(struct user_namespace *mnt_userns,
1263                         struct inode *old_dir, struct dentry *old_dentry,
1264                         struct inode *new_dir, struct dentry *new_dentry,
1265                         unsigned int flags)
1266 {
1267         int err;
1268
1269         if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1270                 return -EINVAL;
1271
1272         err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1273                                      flags);
1274         if (err)
1275                 return err;
1276
1277         if (flags & RENAME_EXCHANGE) {
1278                 return f2fs_cross_rename(old_dir, old_dentry,
1279                                          new_dir, new_dentry);
1280         }
1281         /*
1282          * VFS has already handled the new dentry existence case,
1283          * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1284          */
1285         return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1286 }
1287
1288 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1289                                            struct inode *inode,
1290                                            struct delayed_call *done)
1291 {
1292         struct page *page;
1293         const char *target;
1294
1295         if (!dentry)
1296                 return ERR_PTR(-ECHILD);
1297
1298         page = read_mapping_page(inode->i_mapping, 0, NULL);
1299         if (IS_ERR(page))
1300                 return ERR_CAST(page);
1301
1302         target = fscrypt_get_symlink(inode, page_address(page),
1303                                      inode->i_sb->s_blocksize, done);
1304         put_page(page);
1305         return target;
1306 }
1307
1308 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1309         .get_link       = f2fs_encrypted_get_link,
1310         .getattr        = f2fs_getattr,
1311         .setattr        = f2fs_setattr,
1312         .listxattr      = f2fs_listxattr,
1313 };
1314
1315 const struct inode_operations f2fs_dir_inode_operations = {
1316         .create         = f2fs_create,
1317         .lookup         = f2fs_lookup,
1318         .link           = f2fs_link,
1319         .unlink         = f2fs_unlink,
1320         .symlink        = f2fs_symlink,
1321         .mkdir          = f2fs_mkdir,
1322         .rmdir          = f2fs_rmdir,
1323         .mknod          = f2fs_mknod,
1324         .rename         = f2fs_rename2,
1325         .tmpfile        = f2fs_tmpfile,
1326         .getattr        = f2fs_getattr,
1327         .setattr        = f2fs_setattr,
1328         .get_acl        = f2fs_get_acl,
1329         .set_acl        = f2fs_set_acl,
1330         .listxattr      = f2fs_listxattr,
1331         .fiemap         = f2fs_fiemap,
1332         .fileattr_get   = f2fs_fileattr_get,
1333         .fileattr_set   = f2fs_fileattr_set,
1334 };
1335
1336 const struct inode_operations f2fs_symlink_inode_operations = {
1337         .get_link       = f2fs_get_link,
1338         .getattr        = f2fs_getattr,
1339         .setattr        = f2fs_setattr,
1340         .listxattr      = f2fs_listxattr,
1341 };
1342
1343 const struct inode_operations f2fs_special_inode_operations = {
1344         .getattr        = f2fs_getattr,
1345         .setattr        = f2fs_setattr,
1346         .get_acl        = f2fs_get_acl,
1347         .set_acl        = f2fs_set_acl,
1348         .listxattr      = f2fs_listxattr,
1349 };