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         int xattr_size = 0;
  32         int err;
  33
  34         inode = new_inode(dir->i_sb);
  35         if (!inode)
  36                 return ERR_PTR(-ENOMEM);
  37
  38         f2fs_lock_op(sbi);
  39         if (!f2fs_alloc_nid(sbi, &ino)) {
  40                 f2fs_unlock_op(sbi);
  41                 err = -ENOSPC;
  42                 goto fail;
  43         }
  44         f2fs_unlock_op(sbi);
  45
  46         nid_free = true;
  47
  48         inode_init_owner(inode, dir, mode);
  49
  50         inode->i_ino = ino;
  51         inode->i_blocks = 0;
  52         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
  53         F2FS_I(inode)->i_crtime = inode->i_mtime;
  54         inode->i_generation = prandom_u32();
  55
  56         if (S_ISDIR(inode->i_mode))
  57                 F2FS_I(inode)->i_current_depth = 1;
  58
  59         err = insert_inode_locked(inode);
  60         if (err) {
  61                 err = -EINVAL;
  62                 goto fail;
  63         }
  64
  65         if (f2fs_sb_has_project_quota(sbi) &&
  66                 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
  67                 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
  68         else
  69                 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
  70                                                         F2FS_DEF_PROJID);
  71
  72         err = dquot_initialize(inode);
  73         if (err)
  74                 goto fail_drop;
  75
  76         set_inode_flag(inode, FI_NEW_INODE);
  77
  78         if (f2fs_may_encrypt(dir, inode))
  79                 f2fs_set_encrypted_inode(inode);
  80
  81         if (f2fs_sb_has_extra_attr(sbi)) {
  82                 set_inode_flag(inode, FI_EXTRA_ATTR);
  83                 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
  84         }
  85
  86         if (test_opt(sbi, INLINE_XATTR))
  87                 set_inode_flag(inode, FI_INLINE_XATTR);
  88
  89         if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
  90                 set_inode_flag(inode, FI_INLINE_DATA);
  91         if (f2fs_may_inline_dentry(inode))
  92                 set_inode_flag(inode, FI_INLINE_DENTRY);
  93
  94         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
  95                 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
  96                 if (f2fs_has_inline_xattr(inode))
  97                         xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
  98                 /* Otherwise, will be 0 */
  99         } else if (f2fs_has_inline_xattr(inode) ||
 100                                 f2fs_has_inline_dentry(inode)) {
 101                 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 102         }
 103         F2FS_I(inode)->i_inline_xattr_size = xattr_size;
 104
 105         f2fs_init_extent_tree(inode, NULL);
 106
 107         stat_inc_inline_xattr(inode);
 108         stat_inc_inline_inode(inode);
 109         stat_inc_inline_dir(inode);
 110
 111         F2FS_I(inode)->i_flags =
 112                 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
 113
 114         if (S_ISDIR(inode->i_mode))
 115                 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
 116
 117         if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 118                 set_inode_flag(inode, FI_PROJ_INHERIT);
 119
 120         if (f2fs_sb_has_compression(sbi)) {
 121                 /* Inherit the compression flag in directory */
 122                 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
 123                                         f2fs_may_compress(inode))
 124                         set_compress_context(inode);
 125         }
 126
 127         f2fs_set_inode_flags(inode);
 128
 129         trace_f2fs_new_inode(inode, 0);
 130         return inode;
 131
 132 fail:
 133         trace_f2fs_new_inode(inode, err);
 134         make_bad_inode(inode);
 135         if (nid_free)
 136                 set_inode_flag(inode, FI_FREE_NID);
 137         iput(inode);
 138         return ERR_PTR(err);
 139 fail_drop:
 140         trace_f2fs_new_inode(inode, err);
 141         dquot_drop(inode);
 142         inode->i_flags |= S_NOQUOTA;
 143         if (nid_free)
 144                 set_inode_flag(inode, FI_FREE_NID);
 145         clear_nlink(inode);
 146         unlock_new_inode(inode);
 147         iput(inode);
 148         return ERR_PTR(err);
 149 }
 150
 151 static inline int is_extension_exist(const unsigned char *s, const char *sub)
 152 {
 153         size_t slen = strlen(s);
 154         size_t sublen = strlen(sub);
 155         int i;
 156
 157         if (sublen == 1 && *sub == '*')
 158                 return 1;
 159
 160         /*
 161          * filename format of multimedia file should be defined as:
 162          * "filename + '.' + extension + (optional: '.' + temp extension)".
 163          */
 164         if (slen < sublen + 2)
 165                 return 0;
 166
 167         for (i = 1; i < slen - sublen; i++) {
 168                 if (s[i] != '.')
 169                         continue;
 170                 if (!strncasecmp(s + i + 1, sub, sublen))
 171                         return 1;
 172         }
 173
 174         return 0;
 175 }
 176
 177 /*
 178  * Set file's temperature for hot/cold data separation
 179  */
 180 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
 181                 const unsigned char *name)
 182 {
 183         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 184         int i, cold_count, hot_count;
 185
 186         down_read(&sbi->sb_lock);
 187
 188         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 189         hot_count = sbi->raw_super->hot_ext_count;
 190
 191         for (i = 0; i < cold_count + hot_count; i++) {
 192                 if (is_extension_exist(name, extlist[i]))
 193                         break;
 194         }
 195
 196         up_read(&sbi->sb_lock);
 197
 198         if (i == cold_count + hot_count)
 199                 return;
 200
 201         if (i < cold_count)
 202                 file_set_cold(inode);
 203         else
 204                 file_set_hot(inode);
 205 }
 206
 207 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 208                                                         bool hot, bool set)
 209 {
 210         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 211         int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 212         int hot_count = sbi->raw_super->hot_ext_count;
 213         int total_count = cold_count + hot_count;
 214         int start, count;
 215         int i;
 216
 217         if (set) {
 218                 if (total_count == F2FS_MAX_EXTENSION)
 219                         return -EINVAL;
 220         } else {
 221                 if (!hot && !cold_count)
 222                         return -EINVAL;
 223                 if (hot && !hot_count)
 224                         return -EINVAL;
 225         }
 226
 227         if (hot) {
 228                 start = cold_count;
 229                 count = total_count;
 230         } else {
 231                 start = 0;
 232                 count = cold_count;
 233         }
 234
 235         for (i = start; i < count; i++) {
 236                 if (strcmp(name, extlist[i]))
 237                         continue;
 238
 239                 if (set)
 240                         return -EINVAL;
 241
 242                 memcpy(extlist[i], extlist[i + 1],
 243                                 F2FS_EXTENSION_LEN * (total_count - i - 1));
 244                 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
 245                 if (hot)
 246                         sbi->raw_super->hot_ext_count = hot_count - 1;
 247                 else
 248                         sbi->raw_super->extension_count =
 249                                                 cpu_to_le32(cold_count - 1);
 250                 return 0;
 251         }
 252
 253         if (!set)
 254                 return -EINVAL;
 255
 256         if (hot) {
 257                 memcpy(extlist[count], name, strlen(name));
 258                 sbi->raw_super->hot_ext_count = hot_count + 1;
 259         } else {
 260                 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
 261
 262                 memcpy(buf, &extlist[cold_count],
 263                                 F2FS_EXTENSION_LEN * hot_count);
 264                 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
 265                 memcpy(extlist[cold_count], name, strlen(name));
 266                 memcpy(&extlist[cold_count + 1], buf,
 267                                 F2FS_EXTENSION_LEN * hot_count);
 268                 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
 269         }
 270         return 0;
 271 }
 272
 273 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
 274                                                 const unsigned char *name)
 275 {
 276         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
 277         unsigned char (*ext)[F2FS_EXTENSION_LEN];
 278         unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
 279         int i, cold_count, hot_count;
 280
 281         if (!f2fs_sb_has_compression(sbi) ||
 282                         is_inode_flag_set(inode, FI_COMPRESSED_FILE) ||
 283                         F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
 284                         !f2fs_may_compress(inode))
 285                 return;
 286
 287         down_read(&sbi->sb_lock);
 288
 289         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 290         hot_count = sbi->raw_super->hot_ext_count;
 291
 292         for (i = cold_count; i < cold_count + hot_count; i++) {
 293                 if (is_extension_exist(name, extlist[i])) {
 294                         up_read(&sbi->sb_lock);
 295                         return;
 296                 }
 297         }
 298
 299         up_read(&sbi->sb_lock);
 300
 301         ext = F2FS_OPTION(sbi).extensions;
 302
 303         for (i = 0; i < ext_cnt; i++) {
 304                 if (!is_extension_exist(name, ext[i]))
 305                         continue;
 306
 307                 set_compress_context(inode);
 308                 return;
 309         }
 310 }
 311
 312 static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 313                                                 bool excl)
 314 {
 315         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 316         struct inode *inode;
 317         nid_t ino = 0;
 318         int err;
 319
 320         if (unlikely(f2fs_cp_error(sbi)))
 321                 return -EIO;
 322         if (!f2fs_is_checkpoint_ready(sbi))
 323                 return -ENOSPC;
 324
 325         err = dquot_initialize(dir);
 326         if (err)
 327                 return err;
 328
 329         inode = f2fs_new_inode(dir, mode);
 330         if (IS_ERR(inode))
 331                 return PTR_ERR(inode);
 332
 333         if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
 334                 set_file_temperature(sbi, inode, dentry->d_name.name);
 335
 336         set_compress_inode(sbi, inode, dentry->d_name.name);
 337
 338         inode->i_op = &f2fs_file_inode_operations;
 339         inode->i_fop = &f2fs_file_operations;
 340         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 341         ino = inode->i_ino;
 342
 343         f2fs_lock_op(sbi);
 344         err = f2fs_add_link(dentry, inode);
 345         if (err)
 346                 goto out;
 347         f2fs_unlock_op(sbi);
 348
 349         f2fs_alloc_nid_done(sbi, ino);
 350
 351         d_instantiate_new(dentry, inode);
 352
 353         if (IS_DIRSYNC(dir))
 354                 f2fs_sync_fs(sbi->sb, 1);
 355
 356         f2fs_balance_fs(sbi, true);
 357         return 0;
 358 out:
 359         f2fs_handle_failed_inode(inode);
 360         return err;
 361 }
 362
 363 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
 364                 struct dentry *dentry)
 365 {
 366         struct inode *inode = d_inode(old_dentry);
 367         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 368         int err;
 369
 370         if (unlikely(f2fs_cp_error(sbi)))
 371                 return -EIO;
 372         if (!f2fs_is_checkpoint_ready(sbi))
 373                 return -ENOSPC;
 374
 375         err = fscrypt_prepare_link(old_dentry, dir, dentry);
 376         if (err)
 377                 return err;
 378
 379         if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
 380                         (!projid_eq(F2FS_I(dir)->i_projid,
 381                         F2FS_I(old_dentry->d_inode)->i_projid)))
 382                 return -EXDEV;
 383
 384         err = dquot_initialize(dir);
 385         if (err)
 386                 return err;
 387
 388         f2fs_balance_fs(sbi, true);
 389
 390         inode->i_ctime = current_time(inode);
 391         ihold(inode);
 392
 393         set_inode_flag(inode, FI_INC_LINK);
 394         f2fs_lock_op(sbi);
 395         err = f2fs_add_link(dentry, inode);
 396         if (err)
 397                 goto out;
 398         f2fs_unlock_op(sbi);
 399
 400         d_instantiate(dentry, inode);
 401
 402         if (IS_DIRSYNC(dir))
 403                 f2fs_sync_fs(sbi->sb, 1);
 404         return 0;
 405 out:
 406         clear_inode_flag(inode, FI_INC_LINK);
 407         iput(inode);
 408         f2fs_unlock_op(sbi);
 409         return err;
 410 }
 411
 412 struct dentry *f2fs_get_parent(struct dentry *child)
 413 {
 414         struct qstr dotdot = QSTR_INIT("..", 2);
 415         struct page *page;
 416         unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page);
 417         if (!ino) {
 418                 if (IS_ERR(page))
 419                         return ERR_CAST(page);
 420                 return ERR_PTR(-ENOENT);
 421         }
 422         return d_obtain_alias(f2fs_iget(child->d_sb, ino));
 423 }
 424
 425 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 426 {
 427         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 428         struct qstr dot = QSTR_INIT(".", 1);
 429         struct qstr dotdot = QSTR_INIT("..", 2);
 430         struct f2fs_dir_entry *de;
 431         struct page *page;
 432         int err = 0;
 433
 434         if (f2fs_readonly(sbi->sb)) {
 435                 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
 436                           dir->i_ino, pino);
 437                 return 0;
 438         }
 439
 440         err = dquot_initialize(dir);
 441         if (err)
 442                 return err;
 443
 444         f2fs_balance_fs(sbi, true);
 445
 446         f2fs_lock_op(sbi);
 447
 448         de = f2fs_find_entry(dir, &dot, &page);
 449         if (de) {
 450                 f2fs_put_page(page, 0);
 451         } else if (IS_ERR(page)) {
 452                 err = PTR_ERR(page);
 453                 goto out;
 454         } else {
 455                 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
 456                 if (err)
 457                         goto out;
 458         }
 459
 460         de = f2fs_find_entry(dir, &dotdot, &page);
 461         if (de)
 462                 f2fs_put_page(page, 0);
 463         else if (IS_ERR(page))
 464                 err = PTR_ERR(page);
 465         else
 466                 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
 467 out:
 468         if (!err)
 469                 clear_inode_flag(dir, FI_INLINE_DOTS);
 470
 471         f2fs_unlock_op(sbi);
 472         return err;
 473 }
 474
 475 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 476                 unsigned int flags)
 477 {
 478         struct inode *inode = NULL;
 479         struct f2fs_dir_entry *de;
 480         struct page *page;
 481         struct dentry *new;
 482         nid_t ino = -1;
 483         int err = 0;
 484         unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
 485         struct f2fs_filename fname;
 486
 487         trace_f2fs_lookup_start(dir, dentry, flags);
 488
 489         if (dentry->d_name.len > F2FS_NAME_LEN) {
 490                 err = -ENAMETOOLONG;
 491                 goto out;
 492         }
 493
 494         err = f2fs_prepare_lookup(dir, dentry, &fname);
 495         if (err == -ENOENT)
 496                 goto out_splice;
 497         if (err)
 498                 goto out;
 499         de = __f2fs_find_entry(dir, &fname, &page);
 500         f2fs_free_filename(&fname);
 501
 502         if (!de) {
 503                 if (IS_ERR(page)) {
 504                         err = PTR_ERR(page);
 505                         goto out;
 506                 }
 507                 err = -ENOENT;
 508                 goto out_splice;
 509         }
 510
 511         ino = le32_to_cpu(de->ino);
 512         f2fs_put_page(page, 0);
 513
 514         inode = f2fs_iget(dir->i_sb, ino);
 515         if (IS_ERR(inode)) {
 516                 err = PTR_ERR(inode);
 517                 goto out;
 518         }
 519
 520         if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
 521                 err = __recover_dot_dentries(dir, root_ino);
 522                 if (err)
 523                         goto out_iput;
 524         }
 525
 526         if (f2fs_has_inline_dots(inode)) {
 527                 err = __recover_dot_dentries(inode, dir->i_ino);
 528                 if (err)
 529                         goto out_iput;
 530         }
 531         if (IS_ENCRYPTED(dir) &&
 532             (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
 533             !fscrypt_has_permitted_context(dir, inode)) {
 534                 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
 535                           dir->i_ino, inode->i_ino);
 536                 err = -EPERM;
 537                 goto out_iput;
 538         }
 539 out_splice:
 540 #ifdef CONFIG_UNICODE
 541         if (!inode && IS_CASEFOLDED(dir)) {
 542                 /* Eventually we want to call d_add_ci(dentry, NULL)
 543                  * for negative dentries in the encoding case as
 544                  * well.  For now, prevent the negative dentry
 545                  * from being cached.
 546                  */
 547                 trace_f2fs_lookup_end(dir, dentry, ino, err);
 548                 return NULL;
 549         }
 550 #endif
 551         new = d_splice_alias(inode, dentry);
 552         err = PTR_ERR_OR_ZERO(new);
 553         trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
 554         return new;
 555 out_iput:
 556         iput(inode);
 557 out:
 558         trace_f2fs_lookup_end(dir, dentry, ino, err);
 559         return ERR_PTR(err);
 560 }
 561
 562 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 563 {
 564         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 565         struct inode *inode = d_inode(dentry);
 566         struct f2fs_dir_entry *de;
 567         struct page *page;
 568         int err;
 569
 570         trace_f2fs_unlink_enter(dir, dentry);
 571
 572         if (unlikely(f2fs_cp_error(sbi))) {
 573                 err = -EIO;
 574                 goto fail;
 575         }
 576
 577         err = dquot_initialize(dir);
 578         if (err)
 579                 goto fail;
 580         err = dquot_initialize(inode);
 581         if (err)
 582                 goto fail;
 583
 584         de = f2fs_find_entry(dir, &dentry->d_name, &page);
 585         if (!de) {
 586                 if (IS_ERR(page))
 587                         err = PTR_ERR(page);
 588                 goto fail;
 589         }
 590
 591         f2fs_balance_fs(sbi, true);
 592
 593         f2fs_lock_op(sbi);
 594         err = f2fs_acquire_orphan_inode(sbi);
 595         if (err) {
 596                 f2fs_unlock_op(sbi);
 597                 f2fs_put_page(page, 0);
 598                 goto fail;
 599         }
 600         f2fs_delete_entry(de, page, dir, inode);
 601 #ifdef CONFIG_UNICODE
 602         /* VFS negative dentries are incompatible with Encoding and
 603          * Case-insensitiveness. Eventually we'll want avoid
 604          * invalidating the dentries here, alongside with returning the
 605          * negative dentries at f2fs_lookup(), when it is better
 606          * supported by the VFS for the CI case.
 607          */
 608         if (IS_CASEFOLDED(dir))
 609                 d_invalidate(dentry);
 610 #endif
 611         f2fs_unlock_op(sbi);
 612
 613         if (IS_DIRSYNC(dir))
 614                 f2fs_sync_fs(sbi->sb, 1);
 615 fail:
 616         trace_f2fs_unlink_exit(inode, err);
 617         return err;
 618 }
 619
 620 static const char *f2fs_get_link(struct dentry *dentry,
 621                                  struct inode *inode,
 622                                  struct delayed_call *done)
 623 {
 624         const char *link = page_get_link(dentry, inode, done);
 625         if (!IS_ERR(link) && !*link) {
 626                 /* this is broken symlink case */
 627                 do_delayed_call(done);
 628                 clear_delayed_call(done);
 629                 link = ERR_PTR(-ENOENT);
 630         }
 631         return link;
 632 }
 633
 634 static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 635                                         const char *symname)
 636 {
 637         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 638         struct inode *inode;
 639         size_t len = strlen(symname);
 640         struct fscrypt_str disk_link;
 641         int err;
 642
 643         if (unlikely(f2fs_cp_error(sbi)))
 644                 return -EIO;
 645         if (!f2fs_is_checkpoint_ready(sbi))
 646                 return -ENOSPC;
 647
 648         err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
 649                                       &disk_link);
 650         if (err)
 651                 return err;
 652
 653         err = dquot_initialize(dir);
 654         if (err)
 655                 return err;
 656
 657         inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
 658         if (IS_ERR(inode))
 659                 return PTR_ERR(inode);
 660
 661         if (IS_ENCRYPTED(inode))
 662                 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 663         else
 664                 inode->i_op = &f2fs_symlink_inode_operations;
 665         inode_nohighmem(inode);
 666         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 667
 668         f2fs_lock_op(sbi);
 669         err = f2fs_add_link(dentry, inode);
 670         if (err)
 671                 goto out_f2fs_handle_failed_inode;
 672         f2fs_unlock_op(sbi);
 673         f2fs_alloc_nid_done(sbi, inode->i_ino);
 674
 675         err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
 676         if (err)
 677                 goto err_out;
 678
 679         err = page_symlink(inode, disk_link.name, disk_link.len);
 680
 681 err_out:
 682         d_instantiate_new(dentry, inode);
 683
 684         /*
 685          * Let's flush symlink data in order to avoid broken symlink as much as
 686          * possible. Nevertheless, fsyncing is the best way, but there is no
 687          * way to get a file descriptor in order to flush that.
 688          *
 689          * Note that, it needs to do dir->fsync to make this recoverable.
 690          * If the symlink path is stored into inline_data, there is no
 691          * performance regression.
 692          */
 693         if (!err) {
 694                 filemap_write_and_wait_range(inode->i_mapping, 0,
 695                                                         disk_link.len - 1);
 696
 697                 if (IS_DIRSYNC(dir))
 698                         f2fs_sync_fs(sbi->sb, 1);
 699         } else {
 700                 f2fs_unlink(dir, dentry);
 701         }
 702
 703         f2fs_balance_fs(sbi, true);
 704         goto out_free_encrypted_link;
 705
 706 out_f2fs_handle_failed_inode:
 707         f2fs_handle_failed_inode(inode);
 708 out_free_encrypted_link:
 709         if (disk_link.name != (unsigned char *)symname)
 710                 kfree(disk_link.name);
 711         return err;
 712 }
 713
 714 static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 715 {
 716         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 717         struct inode *inode;
 718         int err;
 719
 720         if (unlikely(f2fs_cp_error(sbi)))
 721                 return -EIO;
 722
 723         err = dquot_initialize(dir);
 724         if (err)
 725                 return err;
 726
 727         inode = f2fs_new_inode(dir, S_IFDIR | mode);
 728         if (IS_ERR(inode))
 729                 return PTR_ERR(inode);
 730
 731         inode->i_op = &f2fs_dir_inode_operations;
 732         inode->i_fop = &f2fs_dir_operations;
 733         inode->i_mapping->a_ops = &f2fs_dblock_aops;
 734         inode_nohighmem(inode);
 735
 736         set_inode_flag(inode, FI_INC_LINK);
 737         f2fs_lock_op(sbi);
 738         err = f2fs_add_link(dentry, inode);
 739         if (err)
 740                 goto out_fail;
 741         f2fs_unlock_op(sbi);
 742
 743         f2fs_alloc_nid_done(sbi, inode->i_ino);
 744
 745         d_instantiate_new(dentry, inode);
 746
 747         if (IS_DIRSYNC(dir))
 748                 f2fs_sync_fs(sbi->sb, 1);
 749
 750         f2fs_balance_fs(sbi, true);
 751         return 0;
 752
 753 out_fail:
 754         clear_inode_flag(inode, FI_INC_LINK);
 755         f2fs_handle_failed_inode(inode);
 756         return err;
 757 }
 758
 759 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
 760 {
 761         struct inode *inode = d_inode(dentry);
 762         if (f2fs_empty_dir(inode))
 763                 return f2fs_unlink(dir, dentry);
 764         return -ENOTEMPTY;
 765 }
 766
 767 static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 768                                 umode_t mode, dev_t rdev)
 769 {
 770         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 771         struct inode *inode;
 772         int err = 0;
 773
 774         if (unlikely(f2fs_cp_error(sbi)))
 775                 return -EIO;
 776         if (!f2fs_is_checkpoint_ready(sbi))
 777                 return -ENOSPC;
 778
 779         err = dquot_initialize(dir);
 780         if (err)
 781                 return err;
 782
 783         inode = f2fs_new_inode(dir, mode);
 784         if (IS_ERR(inode))
 785                 return PTR_ERR(inode);
 786
 787         init_special_inode(inode, inode->i_mode, rdev);
 788         inode->i_op = &f2fs_special_inode_operations;
 789
 790         f2fs_lock_op(sbi);
 791         err = f2fs_add_link(dentry, inode);
 792         if (err)
 793                 goto out;
 794         f2fs_unlock_op(sbi);
 795
 796         f2fs_alloc_nid_done(sbi, inode->i_ino);
 797
 798         d_instantiate_new(dentry, inode);
 799
 800         if (IS_DIRSYNC(dir))
 801                 f2fs_sync_fs(sbi->sb, 1);
 802
 803         f2fs_balance_fs(sbi, true);
 804         return 0;
 805 out:
 806         f2fs_handle_failed_inode(inode);
 807         return err;
 808 }
 809
 810 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 811                                         umode_t mode, struct inode **whiteout)
 812 {
 813         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 814         struct inode *inode;
 815         int err;
 816
 817         err = dquot_initialize(dir);
 818         if (err)
 819                 return err;
 820
 821         inode = f2fs_new_inode(dir, mode);
 822         if (IS_ERR(inode))
 823                 return PTR_ERR(inode);
 824
 825         if (whiteout) {
 826                 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
 827                 inode->i_op = &f2fs_special_inode_operations;
 828         } else {
 829                 inode->i_op = &f2fs_file_inode_operations;
 830                 inode->i_fop = &f2fs_file_operations;
 831                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 832         }
 833
 834         f2fs_lock_op(sbi);
 835         err = f2fs_acquire_orphan_inode(sbi);
 836         if (err)
 837                 goto out;
 838
 839         err = f2fs_do_tmpfile(inode, dir);
 840         if (err)
 841                 goto release_out;
 842
 843         /*
 844          * add this non-linked tmpfile to orphan list, in this way we could
 845          * remove all unused data of tmpfile after abnormal power-off.
 846          */
 847         f2fs_add_orphan_inode(inode);
 848         f2fs_alloc_nid_done(sbi, inode->i_ino);
 849
 850         if (whiteout) {
 851                 f2fs_i_links_write(inode, false);
 852                 inode->i_state |= I_LINKABLE;
 853                 *whiteout = inode;
 854         } else {
 855                 d_tmpfile(dentry, inode);
 856         }
 857         /* link_count was changed by d_tmpfile as well. */
 858         f2fs_unlock_op(sbi);
 859         unlock_new_inode(inode);
 860
 861         f2fs_balance_fs(sbi, true);
 862         return 0;
 863
 864 release_out:
 865         f2fs_release_orphan_inode(sbi);
 866 out:
 867         f2fs_handle_failed_inode(inode);
 868         return err;
 869 }
 870
 871 static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
 872 {
 873         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 874
 875         if (unlikely(f2fs_cp_error(sbi)))
 876                 return -EIO;
 877         if (!f2fs_is_checkpoint_ready(sbi))
 878                 return -ENOSPC;
 879
 880         return __f2fs_tmpfile(dir, dentry, mode, NULL);
 881 }
 882
 883 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
 884 {
 885         if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
 886                 return -EIO;
 887
 888         return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
 889 }
 890
 891 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 892                         struct inode *new_dir, struct dentry *new_dentry,
 893                         unsigned int flags)
 894 {
 895         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
 896         struct inode *old_inode = d_inode(old_dentry);
 897         struct inode *new_inode = d_inode(new_dentry);
 898         struct inode *whiteout = NULL;
 899         struct page *old_dir_page = NULL;
 900         struct page *old_page, *new_page = NULL;
 901         struct f2fs_dir_entry *old_dir_entry = NULL;
 902         struct f2fs_dir_entry *old_entry;
 903         struct f2fs_dir_entry *new_entry;
 904         int err;
 905
 906         if (unlikely(f2fs_cp_error(sbi)))
 907                 return -EIO;
 908         if (!f2fs_is_checkpoint_ready(sbi))
 909                 return -ENOSPC;
 910
 911         if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
 912                         (!projid_eq(F2FS_I(new_dir)->i_projid,
 913                         F2FS_I(old_dentry->d_inode)->i_projid)))
 914                 return -EXDEV;
 915
 916         /*
 917          * If new_inode is null, the below renaming flow will
 918          * add a link in old_dir which can conver inline_dir.
 919          * After then, if we failed to get the entry due to other
 920          * reasons like ENOMEM, we had to remove the new entry.
 921          * Instead of adding such the error handling routine, let's
 922          * simply convert first here.
 923          */
 924         if (old_dir == new_dir && !new_inode) {
 925                 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
 926                 if (err)
 927                         return err;
 928         }
 929
 930         if (flags & RENAME_WHITEOUT) {
 931                 err = f2fs_create_whiteout(old_dir, &whiteout);
 932                 if (err)
 933                         return err;
 934         }
 935
 936         err = dquot_initialize(old_dir);
 937         if (err)
 938                 goto out;
 939
 940         err = dquot_initialize(new_dir);
 941         if (err)
 942                 goto out;
 943
 944         if (new_inode) {
 945                 err = dquot_initialize(new_inode);
 946                 if (err)
 947                         goto out;
 948         }
 949
 950         err = -ENOENT;
 951         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 952         if (!old_entry) {
 953                 if (IS_ERR(old_page))
 954                         err = PTR_ERR(old_page);
 955                 goto out;
 956         }
 957
 958         if (S_ISDIR(old_inode->i_mode)) {
 959                 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
 960                 if (!old_dir_entry) {
 961                         if (IS_ERR(old_dir_page))
 962                                 err = PTR_ERR(old_dir_page);
 963                         goto out_old;
 964                 }
 965         }
 966
 967         if (new_inode) {
 968
 969                 err = -ENOTEMPTY;
 970                 if (old_dir_entry && !f2fs_empty_dir(new_inode))
 971                         goto out_dir;
 972
 973                 err = -ENOENT;
 974                 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
 975                                                 &new_page);
 976                 if (!new_entry) {
 977                         if (IS_ERR(new_page))
 978                                 err = PTR_ERR(new_page);
 979                         goto out_dir;
 980                 }
 981
 982                 f2fs_balance_fs(sbi, true);
 983
 984                 f2fs_lock_op(sbi);
 985
 986                 err = f2fs_acquire_orphan_inode(sbi);
 987                 if (err)
 988                         goto put_out_dir;
 989
 990                 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
 991                 new_page = NULL;
 992
 993                 new_inode->i_ctime = current_time(new_inode);
 994                 down_write(&F2FS_I(new_inode)->i_sem);
 995                 if (old_dir_entry)
 996                         f2fs_i_links_write(new_inode, false);
 997                 f2fs_i_links_write(new_inode, false);
 998                 up_write(&F2FS_I(new_inode)->i_sem);
 999
1000                 if (!new_inode->i_nlink)
1001                         f2fs_add_orphan_inode(new_inode);
1002                 else
1003                         f2fs_release_orphan_inode(sbi);
1004         } else {
1005                 f2fs_balance_fs(sbi, true);
1006
1007                 f2fs_lock_op(sbi);
1008
1009                 err = f2fs_add_link(new_dentry, old_inode);
1010                 if (err) {
1011                         f2fs_unlock_op(sbi);
1012                         goto out_dir;
1013                 }
1014
1015                 if (old_dir_entry)
1016                         f2fs_i_links_write(new_dir, true);
1017         }
1018
1019         down_write(&F2FS_I(old_inode)->i_sem);
1020         if (!old_dir_entry || whiteout)
1021                 file_lost_pino(old_inode);
1022         else
1023                 /* adjust dir's i_pino to pass fsck check */
1024                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1025         up_write(&F2FS_I(old_inode)->i_sem);
1026
1027         old_inode->i_ctime = current_time(old_inode);
1028         f2fs_mark_inode_dirty_sync(old_inode, false);
1029
1030         f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1031         old_page = NULL;
1032
1033         if (whiteout) {
1034                 set_inode_flag(whiteout, FI_INC_LINK);
1035                 err = f2fs_add_link(old_dentry, whiteout);
1036                 if (err)
1037                         goto put_out_dir;
1038                 whiteout->i_state &= ~I_LINKABLE;
1039                 iput(whiteout);
1040         }
1041
1042         if (old_dir_entry) {
1043                 if (old_dir != new_dir && !whiteout)
1044                         f2fs_set_link(old_inode, old_dir_entry,
1045                                                 old_dir_page, new_dir);
1046                 else
1047                         f2fs_put_page(old_dir_page, 0);
1048                 f2fs_i_links_write(old_dir, false);
1049         }
1050         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1051                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1052                 if (S_ISDIR(old_inode->i_mode))
1053                         f2fs_add_ino_entry(sbi, old_inode->i_ino,
1054                                                         TRANS_DIR_INO);
1055         }
1056
1057         f2fs_unlock_op(sbi);
1058
1059         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1060                 f2fs_sync_fs(sbi->sb, 1);
1061
1062         f2fs_update_time(sbi, REQ_TIME);
1063         return 0;
1064
1065 put_out_dir:
1066         f2fs_unlock_op(sbi);
1067         f2fs_put_page(new_page, 0);
1068 out_dir:
1069         if (old_dir_entry)
1070                 f2fs_put_page(old_dir_page, 0);
1071 out_old:
1072         f2fs_put_page(old_page, 0);
1073 out:
1074         if (whiteout)
1075                 iput(whiteout);
1076         return err;
1077 }
1078
1079 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1080                              struct inode *new_dir, struct dentry *new_dentry)
1081 {
1082         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1083         struct inode *old_inode = d_inode(old_dentry);
1084         struct inode *new_inode = d_inode(new_dentry);
1085         struct page *old_dir_page, *new_dir_page;
1086         struct page *old_page, *new_page;
1087         struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1088         struct f2fs_dir_entry *old_entry, *new_entry;
1089         int old_nlink = 0, new_nlink = 0;
1090         int err;
1091
1092         if (unlikely(f2fs_cp_error(sbi)))
1093                 return -EIO;
1094         if (!f2fs_is_checkpoint_ready(sbi))
1095                 return -ENOSPC;
1096
1097         if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1098                         !projid_eq(F2FS_I(new_dir)->i_projid,
1099                         F2FS_I(old_dentry->d_inode)->i_projid)) ||
1100             (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1101                         !projid_eq(F2FS_I(old_dir)->i_projid,
1102                         F2FS_I(new_dentry->d_inode)->i_projid)))
1103                 return -EXDEV;
1104
1105         err = dquot_initialize(old_dir);
1106         if (err)
1107                 goto out;
1108
1109         err = dquot_initialize(new_dir);
1110         if (err)
1111                 goto out;
1112
1113         err = -ENOENT;
1114         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1115         if (!old_entry) {
1116                 if (IS_ERR(old_page))
1117                         err = PTR_ERR(old_page);
1118                 goto out;
1119         }
1120
1121         new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1122         if (!new_entry) {
1123                 if (IS_ERR(new_page))
1124                         err = PTR_ERR(new_page);
1125                 goto out_old;
1126         }
1127
1128         /* prepare for updating ".." directory entry info later */
1129         if (old_dir != new_dir) {
1130                 if (S_ISDIR(old_inode->i_mode)) {
1131                         old_dir_entry = f2fs_parent_dir(old_inode,
1132                                                         &old_dir_page);
1133                         if (!old_dir_entry) {
1134                                 if (IS_ERR(old_dir_page))
1135                                         err = PTR_ERR(old_dir_page);
1136                                 goto out_new;
1137                         }
1138                 }
1139
1140                 if (S_ISDIR(new_inode->i_mode)) {
1141                         new_dir_entry = f2fs_parent_dir(new_inode,
1142                                                         &new_dir_page);
1143                         if (!new_dir_entry) {
1144                                 if (IS_ERR(new_dir_page))
1145                                         err = PTR_ERR(new_dir_page);
1146                                 goto out_old_dir;
1147                         }
1148                 }
1149         }
1150
1151         /*
1152          * If cross rename between file and directory those are not
1153          * in the same directory, we will inc nlink of file's parent
1154          * later, so we should check upper boundary of its nlink.
1155          */
1156         if ((!old_dir_entry || !new_dir_entry) &&
1157                                 old_dir_entry != new_dir_entry) {
1158                 old_nlink = old_dir_entry ? -1 : 1;
1159                 new_nlink = -old_nlink;
1160                 err = -EMLINK;
1161                 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1162                         (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1163                         goto out_new_dir;
1164         }
1165
1166         f2fs_balance_fs(sbi, true);
1167
1168         f2fs_lock_op(sbi);
1169
1170         /* update ".." directory entry info of old dentry */
1171         if (old_dir_entry)
1172                 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1173
1174         /* update ".." directory entry info of new dentry */
1175         if (new_dir_entry)
1176                 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1177
1178         /* update directory entry info of old dir inode */
1179         f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1180
1181         down_write(&F2FS_I(old_inode)->i_sem);
1182         if (!old_dir_entry)
1183                 file_lost_pino(old_inode);
1184         else
1185                 /* adjust dir's i_pino to pass fsck check */
1186                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1187         up_write(&F2FS_I(old_inode)->i_sem);
1188
1189         old_dir->i_ctime = current_time(old_dir);
1190         if (old_nlink) {
1191                 down_write(&F2FS_I(old_dir)->i_sem);
1192                 f2fs_i_links_write(old_dir, old_nlink > 0);
1193                 up_write(&F2FS_I(old_dir)->i_sem);
1194         }
1195         f2fs_mark_inode_dirty_sync(old_dir, false);
1196
1197         /* update directory entry info of new dir inode */
1198         f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1199
1200         down_write(&F2FS_I(new_inode)->i_sem);
1201         if (!new_dir_entry)
1202                 file_lost_pino(new_inode);
1203         else
1204                 /* adjust dir's i_pino to pass fsck check */
1205                 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1206         up_write(&F2FS_I(new_inode)->i_sem);
1207
1208         new_dir->i_ctime = current_time(new_dir);
1209         if (new_nlink) {
1210                 down_write(&F2FS_I(new_dir)->i_sem);
1211                 f2fs_i_links_write(new_dir, new_nlink > 0);
1212                 up_write(&F2FS_I(new_dir)->i_sem);
1213         }
1214         f2fs_mark_inode_dirty_sync(new_dir, false);
1215
1216         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1217                 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1218                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1219         }
1220
1221         f2fs_unlock_op(sbi);
1222
1223         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1224                 f2fs_sync_fs(sbi->sb, 1);
1225
1226         f2fs_update_time(sbi, REQ_TIME);
1227         return 0;
1228 out_new_dir:
1229         if (new_dir_entry) {
1230                 f2fs_put_page(new_dir_page, 0);
1231         }
1232 out_old_dir:
1233         if (old_dir_entry) {
1234                 f2fs_put_page(old_dir_page, 0);
1235         }
1236 out_new:
1237         f2fs_put_page(new_page, 0);
1238 out_old:
1239         f2fs_put_page(old_page, 0);
1240 out:
1241         return err;
1242 }
1243
1244 static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry,
1245                         struct inode *new_dir, struct dentry *new_dentry,
1246                         unsigned int flags)
1247 {
1248         int err;
1249
1250         if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1251                 return -EINVAL;
1252
1253         err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1254                                      flags);
1255         if (err)
1256                 return err;
1257
1258         if (flags & RENAME_EXCHANGE) {
1259                 return f2fs_cross_rename(old_dir, old_dentry,
1260                                          new_dir, new_dentry);
1261         }
1262         /*
1263          * VFS has already handled the new dentry existence case,
1264          * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1265          */
1266         return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1267 }
1268
1269 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1270                                            struct inode *inode,
1271                                            struct delayed_call *done)
1272 {
1273         struct page *page;
1274         const char *target;
1275
1276         if (!dentry)
1277                 return ERR_PTR(-ECHILD);
1278
1279         page = read_mapping_page(inode->i_mapping, 0, NULL);
1280         if (IS_ERR(page))
1281                 return ERR_CAST(page);
1282
1283         target = fscrypt_get_symlink(inode, page_address(page),
1284                                      inode->i_sb->s_blocksize, done);
1285         put_page(page);
1286         return target;
1287 }
1288
1289 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1290         .get_link       = f2fs_encrypted_get_link,
1291         .getattr        = f2fs_getattr,
1292         .setattr        = f2fs_setattr,
1293         .listxattr      = f2fs_listxattr,
1294 };
1295
1296 const struct inode_operations f2fs_dir_inode_operations = {
1297         .create         = f2fs_create,
1298         .lookup         = f2fs_lookup,
1299         .link           = f2fs_link,
1300         .unlink         = f2fs_unlink,
1301         .symlink        = f2fs_symlink,
1302         .mkdir          = f2fs_mkdir,
1303         .rmdir          = f2fs_rmdir,
1304         .mknod          = f2fs_mknod,
1305         .rename         = f2fs_rename2,
1306         .tmpfile        = f2fs_tmpfile,
1307         .getattr        = f2fs_getattr,
1308         .setattr        = f2fs_setattr,
1309         .get_acl        = f2fs_get_acl,
1310         .set_acl        = f2fs_set_acl,
1311         .listxattr      = f2fs_listxattr,
1312         .fiemap         = f2fs_fiemap,
1313 };
1314
1315 const struct inode_operations f2fs_symlink_inode_operations = {
1316         .get_link       = f2fs_get_link,
1317         .getattr        = f2fs_getattr,
1318         .setattr        = f2fs_setattr,
1319         .listxattr      = f2fs_listxattr,
1320 };
1321
1322 const struct inode_operations f2fs_special_inode_operations = {
1323         .getattr        = f2fs_getattr,
1324         .setattr        = f2fs_setattr,
1325         .get_acl        = f2fs_get_acl,
1326         .set_acl        = f2fs_set_acl,
1327         .listxattr      = f2fs_listxattr,
1328 };