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 inline bool is_extension_exist(const unsigned char *s, const char *sub, 26 bool tmp_ext, bool tmp_dot) 27 { 28 size_t slen = strlen(s); 29 size_t sublen = strlen(sub); 30 int i; 31 32 if (sublen == 1 && *sub == '*') 33 return true; 34 35 /* 36 * filename format of multimedia file should be defined as: 37 * "filename + '.' + extension + (optional: '.' + temp extension)". 38 */ 39 if (slen < sublen + 2) 40 return false; 41 42 if (!tmp_ext) { 43 /* file has no temp extension */ 44 if (s[slen - sublen - 1] != '.') 45 return false; 46 return !strncasecmp(s + slen - sublen, sub, sublen); 47 } 48 49 for (i = 1; i < slen - sublen; i++) { 50 if (s[i] != '.') 51 continue; 52 if (!strncasecmp(s + i + 1, sub, sublen)) { 53 if (!tmp_dot) 54 return true; 55 if (i == slen - sublen - 1 || s[i + 1 + sublen] == '.') 56 return true; 57 } 58 } 59 60 return false; 61 } 62 63 static inline bool is_temperature_extension(const unsigned char *s, const char *sub) 64 { 65 return is_extension_exist(s, sub, true, false); 66 } 67 68 static inline bool is_compress_extension(const unsigned char *s, const char *sub) 69 { 70 return is_extension_exist(s, sub, true, true); 71 } 72 73 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, 74 bool hot, bool set) 75 { 76 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; 77 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 78 int hot_count = sbi->raw_super->hot_ext_count; 79 int total_count = cold_count + hot_count; 80 int start, count; 81 int i; 82 83 if (set) { 84 if (total_count == F2FS_MAX_EXTENSION) 85 return -EINVAL; 86 } else { 87 if (!hot && !cold_count) 88 return -EINVAL; 89 if (hot && !hot_count) 90 return -EINVAL; 91 } 92 93 if (hot) { 94 start = cold_count; 95 count = total_count; 96 } else { 97 start = 0; 98 count = cold_count; 99 } 100 101 for (i = start; i < count; i++) { 102 if (strcmp(name, extlist[i])) 103 continue; 104 105 if (set) 106 return -EINVAL; 107 108 memcpy(extlist[i], extlist[i + 1], 109 F2FS_EXTENSION_LEN * (total_count - i - 1)); 110 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); 111 if (hot) 112 sbi->raw_super->hot_ext_count = hot_count - 1; 113 else 114 sbi->raw_super->extension_count = 115 cpu_to_le32(cold_count - 1); 116 return 0; 117 } 118 119 if (!set) 120 return -EINVAL; 121 122 if (hot) { 123 memcpy(extlist[count], name, strlen(name)); 124 sbi->raw_super->hot_ext_count = hot_count + 1; 125 } else { 126 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; 127 128 memcpy(buf, &extlist[cold_count], 129 F2FS_EXTENSION_LEN * hot_count); 130 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); 131 memcpy(extlist[cold_count], name, strlen(name)); 132 memcpy(&extlist[cold_count + 1], buf, 133 F2FS_EXTENSION_LEN * hot_count); 134 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); 135 } 136 return 0; 137 } 138 139 static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir, 140 struct inode *inode, const unsigned char *name) 141 { 142 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; 143 unsigned char (*noext)[F2FS_EXTENSION_LEN] = 144 F2FS_OPTION(sbi).noextensions; 145 unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions; 146 unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 147 unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 148 int i, cold_count, hot_count; 149 150 if (!f2fs_sb_has_compression(sbi)) 151 return; 152 153 if (S_ISDIR(inode->i_mode)) 154 goto inherit_comp; 155 156 /* This name comes only from normal files. */ 157 if (!name) 158 return; 159 160 /* Don't compress hot files. */ 161 f2fs_down_read(&sbi->sb_lock); 162 cold_count = le32_to_cpu(sbi->raw_super->extension_count); 163 hot_count = sbi->raw_super->hot_ext_count; 164 for (i = cold_count; i < cold_count + hot_count; i++) 165 if (is_temperature_extension(name, extlist[i])) 166 break; 167 f2fs_up_read(&sbi->sb_lock); 168 if (i < (cold_count + hot_count)) 169 return; 170 171 /* Don't compress unallowed extension. */ 172 for (i = 0; i < noext_cnt; i++) 173 if (is_compress_extension(name, noext[i])) 174 return; 175 176 /* Compress wanting extension. */ 177 for (i = 0; i < ext_cnt; i++) { 178 if (is_compress_extension(name, ext[i])) { 179 set_compress_context(inode); 180 return; 181 } 182 } 183 inherit_comp: 184 /* Inherit the {no-}compression flag in directory */ 185 if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) { 186 F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL; 187 f2fs_mark_inode_dirty_sync(inode, true); 188 } else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) { 189 set_compress_context(inode); 190 } 191 } 192 193 /* 194 * Set file's temperature for hot/cold data separation 195 */ 196 static void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, 197 const unsigned char *name) 198 { 199 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; 200 int i, cold_count, hot_count; 201 202 f2fs_down_read(&sbi->sb_lock); 203 cold_count = le32_to_cpu(sbi->raw_super->extension_count); 204 hot_count = sbi->raw_super->hot_ext_count; 205 for (i = 0; i < cold_count + hot_count; i++) 206 if (is_temperature_extension(name, extlist[i])) 207 break; 208 f2fs_up_read(&sbi->sb_lock); 209 210 if (i == cold_count + hot_count) 211 return; 212 213 if (i < cold_count) 214 file_set_cold(inode); 215 else 216 file_set_hot(inode); 217 } 218 219 static struct inode *f2fs_new_inode(struct mnt_idmap *idmap, 220 struct inode *dir, umode_t mode, 221 const char *name) 222 { 223 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 224 struct f2fs_inode_info *fi; 225 nid_t ino; 226 struct inode *inode; 227 bool nid_free = false; 228 bool encrypt = false; 229 int xattr_size = 0; 230 int err; 231 232 inode = new_inode(dir->i_sb); 233 if (!inode) 234 return ERR_PTR(-ENOMEM); 235 236 if (!f2fs_alloc_nid(sbi, &ino)) { 237 err = -ENOSPC; 238 goto fail; 239 } 240 241 nid_free = true; 242 243 inode_init_owner(idmap, inode, dir, mode); 244 245 fi = F2FS_I(inode); 246 inode->i_ino = ino; 247 inode->i_blocks = 0; 248 simple_inode_init_ts(inode); 249 fi->i_crtime = inode_get_mtime(inode); 250 inode->i_generation = get_random_u32(); 251 252 if (S_ISDIR(inode->i_mode)) 253 fi->i_current_depth = 1; 254 255 err = insert_inode_locked(inode); 256 if (err) { 257 err = -EINVAL; 258 goto fail; 259 } 260 261 if (f2fs_sb_has_project_quota(sbi) && 262 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) 263 fi->i_projid = F2FS_I(dir)->i_projid; 264 else 265 fi->i_projid = make_kprojid(&init_user_ns, 266 F2FS_DEF_PROJID); 267 268 err = fscrypt_prepare_new_inode(dir, inode, &encrypt); 269 if (err) 270 goto fail_drop; 271 272 err = f2fs_dquot_initialize(inode); 273 if (err) 274 goto fail_drop; 275 276 set_inode_flag(inode, FI_NEW_INODE); 277 278 if (encrypt) 279 f2fs_set_encrypted_inode(inode); 280 281 if (f2fs_sb_has_extra_attr(sbi)) { 282 set_inode_flag(inode, FI_EXTRA_ATTR); 283 fi->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; 284 } 285 286 if (test_opt(sbi, INLINE_XATTR)) 287 set_inode_flag(inode, FI_INLINE_XATTR); 288 289 if (f2fs_may_inline_dentry(inode)) 290 set_inode_flag(inode, FI_INLINE_DENTRY); 291 292 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 293 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); 294 if (f2fs_has_inline_xattr(inode)) 295 xattr_size = F2FS_OPTION(sbi).inline_xattr_size; 296 /* Otherwise, will be 0 */ 297 } else if (f2fs_has_inline_xattr(inode) || 298 f2fs_has_inline_dentry(inode)) { 299 xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 300 } 301 fi->i_inline_xattr_size = xattr_size; 302 303 fi->i_flags = 304 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); 305 306 if (S_ISDIR(inode->i_mode)) 307 fi->i_flags |= F2FS_INDEX_FL; 308 309 if (fi->i_flags & F2FS_PROJINHERIT_FL) 310 set_inode_flag(inode, FI_PROJ_INHERIT); 311 312 /* Check compression first. */ 313 set_compress_new_inode(sbi, dir, inode, name); 314 315 /* Should enable inline_data after compression set */ 316 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) 317 set_inode_flag(inode, FI_INLINE_DATA); 318 319 if (name && !test_opt(sbi, DISABLE_EXT_IDENTIFY)) 320 set_file_temperature(sbi, inode, name); 321 322 stat_inc_inline_xattr(inode); 323 stat_inc_inline_inode(inode); 324 stat_inc_inline_dir(inode); 325 326 f2fs_set_inode_flags(inode); 327 328 f2fs_init_extent_tree(inode); 329 330 trace_f2fs_new_inode(inode, 0); 331 return inode; 332 333 fail: 334 trace_f2fs_new_inode(inode, err); 335 make_bad_inode(inode); 336 if (nid_free) 337 set_inode_flag(inode, FI_FREE_NID); 338 iput(inode); 339 return ERR_PTR(err); 340 fail_drop: 341 trace_f2fs_new_inode(inode, err); 342 dquot_drop(inode); 343 inode->i_flags |= S_NOQUOTA; 344 make_bad_inode(inode); 345 if (nid_free) 346 set_inode_flag(inode, FI_FREE_NID); 347 clear_nlink(inode); 348 unlock_new_inode(inode); 349 iput(inode); 350 return ERR_PTR(err); 351 } 352 353 static int f2fs_create(struct mnt_idmap *idmap, struct inode *dir, 354 struct dentry *dentry, umode_t mode, bool excl) 355 { 356 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 357 struct inode *inode; 358 nid_t ino = 0; 359 int err; 360 361 if (unlikely(f2fs_cp_error(sbi))) 362 return -EIO; 363 if (!f2fs_is_checkpoint_ready(sbi)) 364 return -ENOSPC; 365 366 err = f2fs_dquot_initialize(dir); 367 if (err) 368 return err; 369 370 inode = f2fs_new_inode(idmap, dir, mode, dentry->d_name.name); 371 if (IS_ERR(inode)) 372 return PTR_ERR(inode); 373 374 inode->i_op = &f2fs_file_inode_operations; 375 inode->i_fop = &f2fs_file_operations; 376 inode->i_mapping->a_ops = &f2fs_dblock_aops; 377 ino = inode->i_ino; 378 379 f2fs_lock_op(sbi); 380 err = f2fs_add_link(dentry, inode); 381 if (err) 382 goto out; 383 f2fs_unlock_op(sbi); 384 385 f2fs_alloc_nid_done(sbi, ino); 386 387 d_instantiate_new(dentry, inode); 388 389 if (IS_DIRSYNC(dir)) 390 f2fs_sync_fs(sbi->sb, 1); 391 392 f2fs_balance_fs(sbi, true); 393 return 0; 394 out: 395 f2fs_handle_failed_inode(inode); 396 return err; 397 } 398 399 static int f2fs_link(struct dentry *old_dentry, struct inode *dir, 400 struct dentry *dentry) 401 { 402 struct inode *inode = d_inode(old_dentry); 403 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 404 int err; 405 406 if (unlikely(f2fs_cp_error(sbi))) 407 return -EIO; 408 if (!f2fs_is_checkpoint_ready(sbi)) 409 return -ENOSPC; 410 411 err = fscrypt_prepare_link(old_dentry, dir, dentry); 412 if (err) 413 return err; 414 415 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && 416 (!projid_eq(F2FS_I(dir)->i_projid, 417 F2FS_I(inode)->i_projid))) 418 return -EXDEV; 419 420 err = f2fs_dquot_initialize(dir); 421 if (err) 422 return err; 423 424 f2fs_balance_fs(sbi, true); 425 426 inode_set_ctime_current(inode); 427 ihold(inode); 428 429 set_inode_flag(inode, FI_INC_LINK); 430 f2fs_lock_op(sbi); 431 err = f2fs_add_link(dentry, inode); 432 if (err) 433 goto out; 434 f2fs_unlock_op(sbi); 435 436 d_instantiate(dentry, inode); 437 438 if (IS_DIRSYNC(dir)) 439 f2fs_sync_fs(sbi->sb, 1); 440 return 0; 441 out: 442 clear_inode_flag(inode, FI_INC_LINK); 443 iput(inode); 444 f2fs_unlock_op(sbi); 445 return err; 446 } 447 448 struct dentry *f2fs_get_parent(struct dentry *child) 449 { 450 struct folio *folio; 451 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &folio); 452 453 if (!ino) { 454 if (IS_ERR(folio)) 455 return ERR_CAST(folio); 456 return ERR_PTR(-ENOENT); 457 } 458 return d_obtain_alias(f2fs_iget(child->d_sb, ino)); 459 } 460 461 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, 462 unsigned int flags) 463 { 464 struct inode *inode = NULL; 465 struct f2fs_dir_entry *de; 466 struct folio *folio; 467 struct dentry *new; 468 nid_t ino = -1; 469 int err = 0; 470 struct f2fs_filename fname; 471 472 trace_f2fs_lookup_start(dir, dentry, flags); 473 474 if (dentry->d_name.len > F2FS_NAME_LEN) { 475 err = -ENAMETOOLONG; 476 goto out; 477 } 478 479 err = f2fs_prepare_lookup(dir, dentry, &fname); 480 if (err == -ENOENT) 481 goto out_splice; 482 if (err) 483 goto out; 484 de = __f2fs_find_entry(dir, &fname, &folio); 485 f2fs_free_filename(&fname); 486 487 if (!de) { 488 if (IS_ERR(folio)) { 489 err = PTR_ERR(folio); 490 goto out; 491 } 492 err = -ENOENT; 493 goto out_splice; 494 } 495 496 ino = le32_to_cpu(de->ino); 497 f2fs_folio_put(folio, false); 498 499 inode = f2fs_iget(dir->i_sb, ino); 500 if (IS_ERR(inode)) { 501 err = PTR_ERR(inode); 502 goto out; 503 } 504 505 if (inode->i_nlink == 0) { 506 f2fs_warn(F2FS_I_SB(inode), "%s: inode (ino=%lx) has zero i_nlink", 507 __func__, inode->i_ino); 508 err = -EFSCORRUPTED; 509 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 510 goto out_iput; 511 } 512 513 if (IS_ENCRYPTED(dir) && 514 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && 515 !fscrypt_has_permitted_context(dir, inode)) { 516 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", 517 dir->i_ino, inode->i_ino); 518 err = -EPERM; 519 goto out_iput; 520 } 521 out_splice: 522 if (IS_ENABLED(CONFIG_UNICODE) && !inode && IS_CASEFOLDED(dir)) { 523 /* Eventually we want to call d_add_ci(dentry, NULL) 524 * for negative dentries in the encoding case as 525 * well. For now, prevent the negative dentry 526 * from being cached. 527 */ 528 trace_f2fs_lookup_end(dir, dentry, ino, err); 529 return NULL; 530 } 531 532 new = d_splice_alias(inode, dentry); 533 trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry, 534 ino, IS_ERR(new) ? PTR_ERR(new) : err); 535 return new; 536 out_iput: 537 iput(inode); 538 out: 539 trace_f2fs_lookup_end(dir, dentry, ino, err); 540 return ERR_PTR(err); 541 } 542 543 static int f2fs_unlink(struct inode *dir, struct dentry *dentry) 544 { 545 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 546 struct inode *inode = d_inode(dentry); 547 struct f2fs_dir_entry *de; 548 struct folio *folio; 549 int err; 550 551 trace_f2fs_unlink_enter(dir, dentry); 552 553 if (unlikely(f2fs_cp_error(sbi))) { 554 err = -EIO; 555 goto out; 556 } 557 558 err = f2fs_dquot_initialize(dir); 559 if (err) 560 goto out; 561 err = f2fs_dquot_initialize(inode); 562 if (err) 563 goto out; 564 565 de = f2fs_find_entry(dir, &dentry->d_name, &folio); 566 if (!de) { 567 if (IS_ERR(folio)) 568 err = PTR_ERR(folio); 569 goto out; 570 } 571 572 if (unlikely(inode->i_nlink == 0)) { 573 f2fs_warn(sbi, "%s: inode (ino=%lx) has zero i_nlink", 574 __func__, inode->i_ino); 575 goto corrupted; 576 } else if (S_ISDIR(inode->i_mode) && unlikely(inode->i_nlink == 1)) { 577 f2fs_warn(sbi, "%s: directory inode (ino=%lx) has a single i_nlink", 578 __func__, inode->i_ino); 579 goto corrupted; 580 } 581 582 f2fs_balance_fs(sbi, true); 583 584 f2fs_lock_op(sbi); 585 err = f2fs_acquire_orphan_inode(sbi); 586 if (err) { 587 f2fs_unlock_op(sbi); 588 f2fs_folio_put(folio, false); 589 goto out; 590 } 591 f2fs_delete_entry(de, folio, dir, inode); 592 f2fs_unlock_op(sbi); 593 594 /* VFS negative dentries are incompatible with Encoding and 595 * Case-insensitiveness. Eventually we'll want avoid 596 * invalidating the dentries here, alongside with returning the 597 * negative dentries at f2fs_lookup(), when it is better 598 * supported by the VFS for the CI case. 599 */ 600 if (IS_ENABLED(CONFIG_UNICODE) && IS_CASEFOLDED(dir)) 601 d_invalidate(dentry); 602 603 if (IS_DIRSYNC(dir)) 604 f2fs_sync_fs(sbi->sb, 1); 605 606 goto out; 607 corrupted: 608 err = -EFSCORRUPTED; 609 set_sbi_flag(sbi, SBI_NEED_FSCK); 610 f2fs_folio_put(folio, false); 611 out: 612 trace_f2fs_unlink_exit(inode, err); 613 return err; 614 } 615 616 static const char *f2fs_get_link(struct dentry *dentry, 617 struct inode *inode, 618 struct delayed_call *done) 619 { 620 const char *link = page_get_link(dentry, inode, done); 621 622 if (!IS_ERR(link) && !*link) { 623 /* this is broken symlink case */ 624 do_delayed_call(done); 625 clear_delayed_call(done); 626 link = ERR_PTR(-ENOENT); 627 } 628 return link; 629 } 630 631 static int f2fs_symlink(struct mnt_idmap *idmap, struct inode *dir, 632 struct dentry *dentry, const char *symname) 633 { 634 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 635 struct inode *inode; 636 size_t len = strlen(symname); 637 struct fscrypt_str disk_link; 638 int err; 639 640 if (unlikely(f2fs_cp_error(sbi))) 641 return -EIO; 642 if (!f2fs_is_checkpoint_ready(sbi)) 643 return -ENOSPC; 644 645 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, 646 &disk_link); 647 if (err) 648 return err; 649 650 err = f2fs_dquot_initialize(dir); 651 if (err) 652 return err; 653 654 inode = f2fs_new_inode(idmap, dir, S_IFLNK | S_IRWXUGO, NULL); 655 if (IS_ERR(inode)) 656 return PTR_ERR(inode); 657 658 if (IS_ENCRYPTED(inode)) 659 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 660 else 661 inode->i_op = &f2fs_symlink_inode_operations; 662 inode_nohighmem(inode); 663 inode->i_mapping->a_ops = &f2fs_dblock_aops; 664 665 f2fs_lock_op(sbi); 666 err = f2fs_add_link(dentry, inode); 667 if (err) 668 goto out_f2fs_handle_failed_inode; 669 f2fs_unlock_op(sbi); 670 f2fs_alloc_nid_done(sbi, inode->i_ino); 671 672 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); 673 if (err) 674 goto err_out; 675 676 err = page_symlink(inode, disk_link.name, disk_link.len); 677 678 err_out: 679 d_instantiate_new(dentry, inode); 680 681 /* 682 * Let's flush symlink data in order to avoid broken symlink as much as 683 * possible. Nevertheless, fsyncing is the best way, but there is no 684 * way to get a file descriptor in order to flush that. 685 * 686 * Note that, it needs to do dir->fsync to make this recoverable. 687 * If the symlink path is stored into inline_data, there is no 688 * performance regression. 689 */ 690 if (!err) { 691 filemap_write_and_wait_range(inode->i_mapping, 0, 692 disk_link.len - 1); 693 694 if (IS_DIRSYNC(dir)) 695 f2fs_sync_fs(sbi->sb, 1); 696 } else { 697 f2fs_unlink(dir, dentry); 698 } 699 700 f2fs_balance_fs(sbi, true); 701 goto out_free_encrypted_link; 702 703 out_f2fs_handle_failed_inode: 704 f2fs_handle_failed_inode(inode); 705 out_free_encrypted_link: 706 if (disk_link.name != (unsigned char *)symname) 707 kfree(disk_link.name); 708 return err; 709 } 710 711 static struct dentry *f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir, 712 struct dentry *dentry, umode_t mode) 713 { 714 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 715 struct inode *inode; 716 int err; 717 718 if (unlikely(f2fs_cp_error(sbi))) 719 return ERR_PTR(-EIO); 720 721 err = f2fs_dquot_initialize(dir); 722 if (err) 723 return ERR_PTR(err); 724 725 inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL); 726 if (IS_ERR(inode)) 727 return ERR_CAST(inode); 728 729 inode->i_op = &f2fs_dir_inode_operations; 730 inode->i_fop = &f2fs_dir_operations; 731 inode->i_mapping->a_ops = &f2fs_dblock_aops; 732 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 733 734 set_inode_flag(inode, FI_INC_LINK); 735 f2fs_lock_op(sbi); 736 err = f2fs_add_link(dentry, inode); 737 if (err) 738 goto out_fail; 739 f2fs_unlock_op(sbi); 740 741 f2fs_alloc_nid_done(sbi, inode->i_ino); 742 743 d_instantiate_new(dentry, inode); 744 745 if (IS_DIRSYNC(dir)) 746 f2fs_sync_fs(sbi->sb, 1); 747 748 f2fs_balance_fs(sbi, true); 749 return NULL; 750 751 out_fail: 752 clear_inode_flag(inode, FI_INC_LINK); 753 f2fs_handle_failed_inode(inode); 754 return ERR_PTR(err); 755 } 756 757 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) 758 { 759 struct inode *inode = d_inode(dentry); 760 761 if (f2fs_empty_dir(inode)) 762 return f2fs_unlink(dir, dentry); 763 return -ENOTEMPTY; 764 } 765 766 static int f2fs_mknod(struct mnt_idmap *idmap, struct inode *dir, 767 struct dentry *dentry, umode_t mode, dev_t rdev) 768 { 769 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 770 struct inode *inode; 771 int err = 0; 772 773 if (unlikely(f2fs_cp_error(sbi))) 774 return -EIO; 775 if (!f2fs_is_checkpoint_ready(sbi)) 776 return -ENOSPC; 777 778 err = f2fs_dquot_initialize(dir); 779 if (err) 780 return err; 781 782 inode = f2fs_new_inode(idmap, dir, mode, NULL); 783 if (IS_ERR(inode)) 784 return PTR_ERR(inode); 785 786 init_special_inode(inode, inode->i_mode, rdev); 787 inode->i_op = &f2fs_special_inode_operations; 788 789 f2fs_lock_op(sbi); 790 err = f2fs_add_link(dentry, inode); 791 if (err) 792 goto out; 793 f2fs_unlock_op(sbi); 794 795 f2fs_alloc_nid_done(sbi, inode->i_ino); 796 797 d_instantiate_new(dentry, inode); 798 799 if (IS_DIRSYNC(dir)) 800 f2fs_sync_fs(sbi->sb, 1); 801 802 f2fs_balance_fs(sbi, true); 803 return 0; 804 out: 805 f2fs_handle_failed_inode(inode); 806 return err; 807 } 808 809 static int __f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir, 810 struct file *file, umode_t mode, bool is_whiteout, 811 struct inode **new_inode, struct f2fs_filename *fname) 812 { 813 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 814 struct inode *inode; 815 int err; 816 817 err = f2fs_dquot_initialize(dir); 818 if (err) 819 return err; 820 821 inode = f2fs_new_inode(idmap, dir, mode, NULL); 822 if (IS_ERR(inode)) 823 return PTR_ERR(inode); 824 825 if (is_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, fname); 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 (is_whiteout) { 851 f2fs_i_links_write(inode, false); 852 853 spin_lock(&inode->i_lock); 854 inode_state_set(inode, I_LINKABLE); 855 spin_unlock(&inode->i_lock); 856 } else { 857 if (file) 858 d_tmpfile(file, inode); 859 else 860 f2fs_i_links_write(inode, false); 861 } 862 /* link_count was changed by d_tmpfile as well. */ 863 f2fs_unlock_op(sbi); 864 unlock_new_inode(inode); 865 866 if (new_inode) 867 *new_inode = inode; 868 869 f2fs_balance_fs(sbi, true); 870 return 0; 871 872 release_out: 873 f2fs_release_orphan_inode(sbi); 874 out: 875 f2fs_handle_failed_inode(inode); 876 return err; 877 } 878 879 static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir, 880 struct file *file, umode_t mode) 881 { 882 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 883 int err; 884 885 if (unlikely(f2fs_cp_error(sbi))) 886 return -EIO; 887 if (!f2fs_is_checkpoint_ready(sbi)) 888 return -ENOSPC; 889 890 err = __f2fs_tmpfile(idmap, dir, file, mode, false, NULL, NULL); 891 892 return finish_open_simple(file, err); 893 } 894 895 static int f2fs_create_whiteout(struct mnt_idmap *idmap, 896 struct inode *dir, struct inode **whiteout, 897 struct f2fs_filename *fname) 898 { 899 return __f2fs_tmpfile(idmap, dir, NULL, S_IFCHR | WHITEOUT_MODE, 900 true, whiteout, fname); 901 } 902 903 int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir, 904 struct inode **new_inode) 905 { 906 return __f2fs_tmpfile(idmap, dir, NULL, S_IFREG, 907 false, new_inode, NULL); 908 } 909 910 static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir, 911 struct dentry *old_dentry, struct inode *new_dir, 912 struct dentry *new_dentry, unsigned int flags) 913 { 914 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); 915 struct inode *old_inode = d_inode(old_dentry); 916 struct inode *new_inode = d_inode(new_dentry); 917 struct inode *whiteout = NULL; 918 struct folio *old_dir_folio = NULL; 919 struct folio *old_folio, *new_folio = NULL; 920 struct f2fs_dir_entry *old_dir_entry = NULL; 921 struct f2fs_dir_entry *old_entry; 922 struct f2fs_dir_entry *new_entry; 923 bool old_is_dir = S_ISDIR(old_inode->i_mode); 924 int err; 925 926 if (unlikely(f2fs_cp_error(sbi))) 927 return -EIO; 928 if (!f2fs_is_checkpoint_ready(sbi)) 929 return -ENOSPC; 930 931 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 932 (!projid_eq(F2FS_I(new_dir)->i_projid, 933 F2FS_I(old_inode)->i_projid))) 934 return -EXDEV; 935 936 /* 937 * If new_inode is null, the below renaming flow will 938 * add a link in old_dir which can convert inline_dir. 939 * After then, if we failed to get the entry due to other 940 * reasons like ENOMEM, we had to remove the new entry. 941 * Instead of adding such the error handling routine, let's 942 * simply convert first here. 943 */ 944 if (old_dir == new_dir && !new_inode) { 945 err = f2fs_try_convert_inline_dir(old_dir, new_dentry); 946 if (err) 947 return err; 948 } 949 950 if (flags & RENAME_WHITEOUT) { 951 struct f2fs_filename fname; 952 953 err = f2fs_setup_filename(old_dir, &old_dentry->d_name, 954 0, &fname); 955 if (err) 956 return err; 957 958 err = f2fs_create_whiteout(idmap, old_dir, &whiteout, &fname); 959 if (err) 960 return err; 961 } 962 963 err = f2fs_dquot_initialize(old_dir); 964 if (err) 965 goto out; 966 967 err = f2fs_dquot_initialize(new_dir); 968 if (err) 969 goto out; 970 971 if (new_inode) { 972 err = f2fs_dquot_initialize(new_inode); 973 if (err) 974 goto out; 975 } 976 977 err = -ENOENT; 978 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_folio); 979 if (!old_entry) { 980 if (IS_ERR(old_folio)) 981 err = PTR_ERR(old_folio); 982 goto out; 983 } 984 985 if (old_is_dir && old_dir != new_dir) { 986 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_folio); 987 if (!old_dir_entry) { 988 if (IS_ERR(old_dir_folio)) 989 err = PTR_ERR(old_dir_folio); 990 goto out_old; 991 } 992 } 993 994 if (new_inode) { 995 996 err = -ENOTEMPTY; 997 if (old_is_dir && !f2fs_empty_dir(new_inode)) 998 goto out_dir; 999 1000 err = -ENOENT; 1001 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, 1002 &new_folio); 1003 if (!new_entry) { 1004 if (IS_ERR(new_folio)) 1005 err = PTR_ERR(new_folio); 1006 goto out_dir; 1007 } 1008 1009 f2fs_balance_fs(sbi, true); 1010 1011 f2fs_lock_op(sbi); 1012 1013 err = f2fs_acquire_orphan_inode(sbi); 1014 if (err) 1015 goto put_out_dir; 1016 1017 f2fs_set_link(new_dir, new_entry, new_folio, old_inode); 1018 new_folio = NULL; 1019 1020 inode_set_ctime_current(new_inode); 1021 f2fs_down_write(&F2FS_I(new_inode)->i_sem); 1022 if (old_is_dir) 1023 f2fs_i_links_write(new_inode, false); 1024 f2fs_i_links_write(new_inode, false); 1025 f2fs_up_write(&F2FS_I(new_inode)->i_sem); 1026 1027 if (!new_inode->i_nlink) 1028 f2fs_add_orphan_inode(new_inode); 1029 else 1030 f2fs_release_orphan_inode(sbi); 1031 } else { 1032 f2fs_balance_fs(sbi, true); 1033 1034 f2fs_lock_op(sbi); 1035 1036 err = f2fs_add_link(new_dentry, old_inode); 1037 if (err) { 1038 f2fs_unlock_op(sbi); 1039 goto out_dir; 1040 } 1041 1042 if (old_is_dir) 1043 f2fs_i_links_write(new_dir, true); 1044 } 1045 1046 f2fs_down_write(&F2FS_I(old_inode)->i_sem); 1047 if (!old_is_dir || whiteout) 1048 file_lost_pino(old_inode); 1049 else 1050 /* adjust dir's i_pino to pass fsck check */ 1051 f2fs_i_pino_write(old_inode, new_dir->i_ino); 1052 f2fs_up_write(&F2FS_I(old_inode)->i_sem); 1053 1054 inode_set_ctime_current(old_inode); 1055 f2fs_mark_inode_dirty_sync(old_inode, false); 1056 1057 f2fs_delete_entry(old_entry, old_folio, old_dir, NULL); 1058 old_folio = NULL; 1059 1060 if (whiteout) { 1061 set_inode_flag(whiteout, FI_INC_LINK); 1062 err = f2fs_add_link(old_dentry, whiteout); 1063 if (err) { 1064 d_invalidate(old_dentry); 1065 d_invalidate(new_dentry); 1066 goto put_out_dir; 1067 } 1068 spin_lock(&whiteout->i_lock); 1069 inode_state_clear(whiteout, I_LINKABLE); 1070 spin_unlock(&whiteout->i_lock); 1071 1072 iput(whiteout); 1073 } 1074 1075 if (old_dir_entry) 1076 f2fs_set_link(old_inode, old_dir_entry, old_dir_folio, new_dir); 1077 if (old_is_dir) 1078 f2fs_i_links_write(old_dir, false); 1079 1080 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { 1081 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); 1082 if (S_ISDIR(old_inode->i_mode)) 1083 f2fs_add_ino_entry(sbi, old_inode->i_ino, 1084 TRANS_DIR_INO); 1085 } 1086 1087 f2fs_unlock_op(sbi); 1088 1089 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) 1090 f2fs_sync_fs(sbi->sb, 1); 1091 1092 f2fs_update_time(sbi, REQ_TIME); 1093 return 0; 1094 1095 put_out_dir: 1096 f2fs_unlock_op(sbi); 1097 f2fs_folio_put(new_folio, false); 1098 out_dir: 1099 if (old_dir_entry) 1100 f2fs_folio_put(old_dir_folio, false); 1101 out_old: 1102 f2fs_folio_put(old_folio, false); 1103 out: 1104 iput(whiteout); 1105 return err; 1106 } 1107 1108 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, 1109 struct inode *new_dir, struct dentry *new_dentry) 1110 { 1111 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); 1112 struct inode *old_inode = d_inode(old_dentry); 1113 struct inode *new_inode = d_inode(new_dentry); 1114 struct folio *old_dir_folio, *new_dir_folio; 1115 struct folio *old_folio, *new_folio; 1116 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; 1117 struct f2fs_dir_entry *old_entry, *new_entry; 1118 int old_nlink = 0, new_nlink = 0; 1119 int err; 1120 1121 if (unlikely(f2fs_cp_error(sbi))) 1122 return -EIO; 1123 if (!f2fs_is_checkpoint_ready(sbi)) 1124 return -ENOSPC; 1125 1126 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 1127 !projid_eq(F2FS_I(new_dir)->i_projid, 1128 F2FS_I(old_inode)->i_projid)) || 1129 (is_inode_flag_set(old_dir, FI_PROJ_INHERIT) && 1130 !projid_eq(F2FS_I(old_dir)->i_projid, 1131 F2FS_I(new_inode)->i_projid))) 1132 return -EXDEV; 1133 1134 err = f2fs_dquot_initialize(old_dir); 1135 if (err) 1136 goto out; 1137 1138 err = f2fs_dquot_initialize(new_dir); 1139 if (err) 1140 goto out; 1141 1142 err = -ENOENT; 1143 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_folio); 1144 if (!old_entry) { 1145 if (IS_ERR(old_folio)) 1146 err = PTR_ERR(old_folio); 1147 goto out; 1148 } 1149 1150 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_folio); 1151 if (!new_entry) { 1152 if (IS_ERR(new_folio)) 1153 err = PTR_ERR(new_folio); 1154 goto out_old; 1155 } 1156 1157 /* prepare for updating ".." directory entry info later */ 1158 if (old_dir != new_dir) { 1159 if (S_ISDIR(old_inode->i_mode)) { 1160 old_dir_entry = f2fs_parent_dir(old_inode, 1161 &old_dir_folio); 1162 if (!old_dir_entry) { 1163 if (IS_ERR(old_dir_folio)) 1164 err = PTR_ERR(old_dir_folio); 1165 goto out_new; 1166 } 1167 } 1168 1169 if (S_ISDIR(new_inode->i_mode)) { 1170 new_dir_entry = f2fs_parent_dir(new_inode, 1171 &new_dir_folio); 1172 if (!new_dir_entry) { 1173 if (IS_ERR(new_dir_folio)) 1174 err = PTR_ERR(new_dir_folio); 1175 goto out_old_dir; 1176 } 1177 } 1178 } 1179 1180 /* 1181 * If cross rename between file and directory those are not 1182 * in the same directory, we will inc nlink of file's parent 1183 * later, so we should check upper boundary of its nlink. 1184 */ 1185 if ((!old_dir_entry || !new_dir_entry) && 1186 old_dir_entry != new_dir_entry) { 1187 old_nlink = old_dir_entry ? -1 : 1; 1188 new_nlink = -old_nlink; 1189 err = -EMLINK; 1190 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || 1191 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) 1192 goto out_new_dir; 1193 } 1194 1195 f2fs_balance_fs(sbi, true); 1196 1197 f2fs_lock_op(sbi); 1198 1199 /* update ".." directory entry info of old dentry */ 1200 if (old_dir_entry) 1201 f2fs_set_link(old_inode, old_dir_entry, old_dir_folio, new_dir); 1202 1203 /* update ".." directory entry info of new dentry */ 1204 if (new_dir_entry) 1205 f2fs_set_link(new_inode, new_dir_entry, new_dir_folio, old_dir); 1206 1207 /* update directory entry info of old dir inode */ 1208 f2fs_set_link(old_dir, old_entry, old_folio, new_inode); 1209 1210 f2fs_down_write(&F2FS_I(old_inode)->i_sem); 1211 if (!old_dir_entry) 1212 file_lost_pino(old_inode); 1213 else 1214 /* adjust dir's i_pino to pass fsck check */ 1215 f2fs_i_pino_write(old_inode, new_dir->i_ino); 1216 f2fs_up_write(&F2FS_I(old_inode)->i_sem); 1217 1218 inode_set_ctime_current(old_dir); 1219 if (old_nlink) { 1220 f2fs_down_write(&F2FS_I(old_dir)->i_sem); 1221 f2fs_i_links_write(old_dir, old_nlink > 0); 1222 f2fs_up_write(&F2FS_I(old_dir)->i_sem); 1223 } 1224 f2fs_mark_inode_dirty_sync(old_dir, false); 1225 1226 /* update directory entry info of new dir inode */ 1227 f2fs_set_link(new_dir, new_entry, new_folio, old_inode); 1228 1229 f2fs_down_write(&F2FS_I(new_inode)->i_sem); 1230 if (!new_dir_entry) 1231 file_lost_pino(new_inode); 1232 else 1233 /* adjust dir's i_pino to pass fsck check */ 1234 f2fs_i_pino_write(new_inode, old_dir->i_ino); 1235 f2fs_up_write(&F2FS_I(new_inode)->i_sem); 1236 1237 inode_set_ctime_current(new_dir); 1238 if (new_nlink) { 1239 f2fs_down_write(&F2FS_I(new_dir)->i_sem); 1240 f2fs_i_links_write(new_dir, new_nlink > 0); 1241 f2fs_up_write(&F2FS_I(new_dir)->i_sem); 1242 } 1243 f2fs_mark_inode_dirty_sync(new_dir, false); 1244 1245 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { 1246 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); 1247 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); 1248 } 1249 1250 f2fs_unlock_op(sbi); 1251 1252 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) 1253 f2fs_sync_fs(sbi->sb, 1); 1254 1255 f2fs_update_time(sbi, REQ_TIME); 1256 return 0; 1257 out_new_dir: 1258 if (new_dir_entry) { 1259 f2fs_folio_put(new_dir_folio, false); 1260 } 1261 out_old_dir: 1262 if (old_dir_entry) { 1263 f2fs_folio_put(old_dir_folio, false); 1264 } 1265 out_new: 1266 f2fs_folio_put(new_folio, false); 1267 out_old: 1268 f2fs_folio_put(old_folio, false); 1269 out: 1270 return err; 1271 } 1272 1273 static int f2fs_rename2(struct mnt_idmap *idmap, 1274 struct inode *old_dir, struct dentry *old_dentry, 1275 struct inode *new_dir, struct dentry *new_dentry, 1276 unsigned int flags) 1277 { 1278 int err; 1279 1280 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) 1281 return -EINVAL; 1282 1283 trace_f2fs_rename_start(old_dir, old_dentry, new_dir, new_dentry, 1284 flags); 1285 1286 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, 1287 flags); 1288 if (err) 1289 return err; 1290 1291 if (flags & RENAME_EXCHANGE) 1292 err = f2fs_cross_rename(old_dir, old_dentry, 1293 new_dir, new_dentry); 1294 else 1295 /* 1296 * VFS has already handled the new dentry existence case, 1297 * here, we just deal with "RENAME_NOREPLACE" as regular rename. 1298 */ 1299 err = f2fs_rename(idmap, old_dir, old_dentry, 1300 new_dir, new_dentry, flags); 1301 1302 trace_f2fs_rename_end(old_dentry, new_dentry, flags, err); 1303 return err; 1304 } 1305 1306 static const char *f2fs_encrypted_get_link(struct dentry *dentry, 1307 struct inode *inode, 1308 struct delayed_call *done) 1309 { 1310 struct folio *folio; 1311 const char *target; 1312 1313 if (!dentry) 1314 return ERR_PTR(-ECHILD); 1315 1316 folio = read_mapping_folio(inode->i_mapping, 0, NULL); 1317 if (IS_ERR(folio)) 1318 return ERR_CAST(folio); 1319 1320 target = fscrypt_get_symlink(inode, folio_address(folio), 1321 inode->i_sb->s_blocksize, done); 1322 folio_put(folio); 1323 return target; 1324 } 1325 1326 static int f2fs_encrypted_symlink_getattr(struct mnt_idmap *idmap, 1327 const struct path *path, 1328 struct kstat *stat, u32 request_mask, 1329 unsigned int query_flags) 1330 { 1331 f2fs_getattr(idmap, path, stat, request_mask, query_flags); 1332 1333 return fscrypt_symlink_getattr(path, stat); 1334 } 1335 1336 const struct inode_operations f2fs_encrypted_symlink_inode_operations = { 1337 .get_link = f2fs_encrypted_get_link, 1338 .getattr = f2fs_encrypted_symlink_getattr, 1339 .setattr = f2fs_setattr, 1340 .listxattr = f2fs_listxattr, 1341 }; 1342 1343 const struct inode_operations f2fs_dir_inode_operations = { 1344 .create = f2fs_create, 1345 .lookup = f2fs_lookup, 1346 .link = f2fs_link, 1347 .unlink = f2fs_unlink, 1348 .symlink = f2fs_symlink, 1349 .mkdir = f2fs_mkdir, 1350 .rmdir = f2fs_rmdir, 1351 .mknod = f2fs_mknod, 1352 .rename = f2fs_rename2, 1353 .tmpfile = f2fs_tmpfile, 1354 .getattr = f2fs_getattr, 1355 .setattr = f2fs_setattr, 1356 .get_inode_acl = f2fs_get_acl, 1357 .set_acl = f2fs_set_acl, 1358 .listxattr = f2fs_listxattr, 1359 .fiemap = f2fs_fiemap, 1360 .fileattr_get = f2fs_fileattr_get, 1361 .fileattr_set = f2fs_fileattr_set, 1362 }; 1363 1364 const struct inode_operations f2fs_symlink_inode_operations = { 1365 .get_link = f2fs_get_link, 1366 .getattr = f2fs_getattr, 1367 .setattr = f2fs_setattr, 1368 .listxattr = f2fs_listxattr, 1369 }; 1370 1371 const struct inode_operations f2fs_special_inode_operations = { 1372 .getattr = f2fs_getattr, 1373 .setattr = f2fs_setattr, 1374 .get_inode_acl = f2fs_get_acl, 1375 .set_acl = f2fs_set_acl, 1376 .listxattr = f2fs_listxattr, 1377 }; 1378