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 nid_t ino; 225 struct inode *inode; 226 bool nid_free = false; 227 bool encrypt = false; 228 int xattr_size = 0; 229 int err; 230 231 inode = new_inode(dir->i_sb); 232 if (!inode) 233 return ERR_PTR(-ENOMEM); 234 235 if (!f2fs_alloc_nid(sbi, &ino)) { 236 err = -ENOSPC; 237 goto fail; 238 } 239 240 nid_free = true; 241 242 inode_init_owner(idmap, inode, dir, mode); 243 244 inode->i_ino = ino; 245 inode->i_blocks = 0; 246 simple_inode_init_ts(inode); 247 F2FS_I(inode)->i_crtime = inode_get_mtime(inode); 248 inode->i_generation = get_random_u32(); 249 250 if (S_ISDIR(inode->i_mode)) 251 F2FS_I(inode)->i_current_depth = 1; 252 253 err = insert_inode_locked(inode); 254 if (err) { 255 err = -EINVAL; 256 goto fail; 257 } 258 259 if (f2fs_sb_has_project_quota(sbi) && 260 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) 261 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; 262 else 263 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns, 264 F2FS_DEF_PROJID); 265 266 err = fscrypt_prepare_new_inode(dir, inode, &encrypt); 267 if (err) 268 goto fail_drop; 269 270 err = f2fs_dquot_initialize(inode); 271 if (err) 272 goto fail_drop; 273 274 set_inode_flag(inode, FI_NEW_INODE); 275 276 if (encrypt) 277 f2fs_set_encrypted_inode(inode); 278 279 if (f2fs_sb_has_extra_attr(sbi)) { 280 set_inode_flag(inode, FI_EXTRA_ATTR); 281 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; 282 } 283 284 if (test_opt(sbi, INLINE_XATTR)) 285 set_inode_flag(inode, FI_INLINE_XATTR); 286 287 if (f2fs_may_inline_dentry(inode)) 288 set_inode_flag(inode, FI_INLINE_DENTRY); 289 290 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 291 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); 292 if (f2fs_has_inline_xattr(inode)) 293 xattr_size = F2FS_OPTION(sbi).inline_xattr_size; 294 /* Otherwise, will be 0 */ 295 } else if (f2fs_has_inline_xattr(inode) || 296 f2fs_has_inline_dentry(inode)) { 297 xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 298 } 299 F2FS_I(inode)->i_inline_xattr_size = xattr_size; 300 301 F2FS_I(inode)->i_flags = 302 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); 303 304 if (S_ISDIR(inode->i_mode)) 305 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL; 306 307 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) 308 set_inode_flag(inode, FI_PROJ_INHERIT); 309 310 /* Check compression first. */ 311 set_compress_new_inode(sbi, dir, inode, name); 312 313 /* Should enable inline_data after compression set */ 314 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) 315 set_inode_flag(inode, FI_INLINE_DATA); 316 317 if (name && !test_opt(sbi, DISABLE_EXT_IDENTIFY)) 318 set_file_temperature(sbi, inode, name); 319 320 stat_inc_inline_xattr(inode); 321 stat_inc_inline_inode(inode); 322 stat_inc_inline_dir(inode); 323 324 f2fs_set_inode_flags(inode); 325 326 f2fs_init_extent_tree(inode); 327 328 trace_f2fs_new_inode(inode, 0); 329 return inode; 330 331 fail: 332 trace_f2fs_new_inode(inode, err); 333 make_bad_inode(inode); 334 if (nid_free) 335 set_inode_flag(inode, FI_FREE_NID); 336 iput(inode); 337 return ERR_PTR(err); 338 fail_drop: 339 trace_f2fs_new_inode(inode, err); 340 dquot_drop(inode); 341 inode->i_flags |= S_NOQUOTA; 342 if (nid_free) 343 set_inode_flag(inode, FI_FREE_NID); 344 clear_nlink(inode); 345 unlock_new_inode(inode); 346 iput(inode); 347 return ERR_PTR(err); 348 } 349 350 static int f2fs_create(struct mnt_idmap *idmap, struct inode *dir, 351 struct dentry *dentry, umode_t mode, bool excl) 352 { 353 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 354 struct inode *inode; 355 nid_t ino = 0; 356 int err; 357 358 if (unlikely(f2fs_cp_error(sbi))) 359 return -EIO; 360 if (!f2fs_is_checkpoint_ready(sbi)) 361 return -ENOSPC; 362 363 err = f2fs_dquot_initialize(dir); 364 if (err) 365 return err; 366 367 inode = f2fs_new_inode(idmap, dir, mode, dentry->d_name.name); 368 if (IS_ERR(inode)) 369 return PTR_ERR(inode); 370 371 inode->i_op = &f2fs_file_inode_operations; 372 inode->i_fop = &f2fs_file_operations; 373 inode->i_mapping->a_ops = &f2fs_dblock_aops; 374 ino = inode->i_ino; 375 376 f2fs_lock_op(sbi); 377 err = f2fs_add_link(dentry, inode); 378 if (err) 379 goto out; 380 f2fs_unlock_op(sbi); 381 382 f2fs_alloc_nid_done(sbi, ino); 383 384 d_instantiate_new(dentry, inode); 385 386 if (IS_DIRSYNC(dir)) 387 f2fs_sync_fs(sbi->sb, 1); 388 389 f2fs_balance_fs(sbi, true); 390 return 0; 391 out: 392 f2fs_handle_failed_inode(inode); 393 return err; 394 } 395 396 static int f2fs_link(struct dentry *old_dentry, struct inode *dir, 397 struct dentry *dentry) 398 { 399 struct inode *inode = d_inode(old_dentry); 400 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 401 int err; 402 403 if (unlikely(f2fs_cp_error(sbi))) 404 return -EIO; 405 if (!f2fs_is_checkpoint_ready(sbi)) 406 return -ENOSPC; 407 408 err = fscrypt_prepare_link(old_dentry, dir, dentry); 409 if (err) 410 return err; 411 412 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && 413 (!projid_eq(F2FS_I(dir)->i_projid, 414 F2FS_I(old_dentry->d_inode)->i_projid))) 415 return -EXDEV; 416 417 err = f2fs_dquot_initialize(dir); 418 if (err) 419 return err; 420 421 f2fs_balance_fs(sbi, true); 422 423 inode_set_ctime_current(inode); 424 ihold(inode); 425 426 set_inode_flag(inode, FI_INC_LINK); 427 f2fs_lock_op(sbi); 428 err = f2fs_add_link(dentry, inode); 429 if (err) 430 goto out; 431 f2fs_unlock_op(sbi); 432 433 d_instantiate(dentry, inode); 434 435 if (IS_DIRSYNC(dir)) 436 f2fs_sync_fs(sbi->sb, 1); 437 return 0; 438 out: 439 clear_inode_flag(inode, FI_INC_LINK); 440 iput(inode); 441 f2fs_unlock_op(sbi); 442 return err; 443 } 444 445 struct dentry *f2fs_get_parent(struct dentry *child) 446 { 447 struct page *page; 448 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page); 449 450 if (!ino) { 451 if (IS_ERR(page)) 452 return ERR_CAST(page); 453 return ERR_PTR(-ENOENT); 454 } 455 return d_obtain_alias(f2fs_iget(child->d_sb, ino)); 456 } 457 458 static int __recover_dot_dentries(struct inode *dir, nid_t pino) 459 { 460 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 461 struct qstr dot = QSTR_INIT(".", 1); 462 struct qstr dotdot = QSTR_INIT("..", 2); 463 struct f2fs_dir_entry *de; 464 struct page *page; 465 int err = 0; 466 467 if (f2fs_readonly(sbi->sb)) { 468 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint", 469 dir->i_ino, pino); 470 return 0; 471 } 472 473 if (!S_ISDIR(dir->i_mode)) { 474 f2fs_err(sbi, "inconsistent inode status, skip recovering inline_dots inode (ino:%lu, i_mode:%u, pino:%u)", 475 dir->i_ino, dir->i_mode, pino); 476 set_sbi_flag(sbi, SBI_NEED_FSCK); 477 return -ENOTDIR; 478 } 479 480 err = f2fs_dquot_initialize(dir); 481 if (err) 482 return err; 483 484 f2fs_balance_fs(sbi, true); 485 486 f2fs_lock_op(sbi); 487 488 de = f2fs_find_entry(dir, &dot, &page); 489 if (de) { 490 f2fs_put_page(page, 0); 491 } else if (IS_ERR(page)) { 492 err = PTR_ERR(page); 493 goto out; 494 } else { 495 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); 496 if (err) 497 goto out; 498 } 499 500 de = f2fs_find_entry(dir, &dotdot, &page); 501 if (de) 502 f2fs_put_page(page, 0); 503 else if (IS_ERR(page)) 504 err = PTR_ERR(page); 505 else 506 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); 507 out: 508 if (!err) 509 clear_inode_flag(dir, FI_INLINE_DOTS); 510 511 f2fs_unlock_op(sbi); 512 return err; 513 } 514 515 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, 516 unsigned int flags) 517 { 518 struct inode *inode = NULL; 519 struct f2fs_dir_entry *de; 520 struct page *page; 521 struct dentry *new; 522 nid_t ino = -1; 523 int err = 0; 524 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); 525 struct f2fs_filename fname; 526 527 trace_f2fs_lookup_start(dir, dentry, flags); 528 529 if (dentry->d_name.len > F2FS_NAME_LEN) { 530 err = -ENAMETOOLONG; 531 goto out; 532 } 533 534 err = f2fs_prepare_lookup(dir, dentry, &fname); 535 generic_set_encrypted_ci_d_ops(dentry); 536 if (err == -ENOENT) 537 goto out_splice; 538 if (err) 539 goto out; 540 de = __f2fs_find_entry(dir, &fname, &page); 541 f2fs_free_filename(&fname); 542 543 if (!de) { 544 if (IS_ERR(page)) { 545 err = PTR_ERR(page); 546 goto out; 547 } 548 err = -ENOENT; 549 goto out_splice; 550 } 551 552 ino = le32_to_cpu(de->ino); 553 f2fs_put_page(page, 0); 554 555 inode = f2fs_iget(dir->i_sb, ino); 556 if (IS_ERR(inode)) { 557 err = PTR_ERR(inode); 558 goto out; 559 } 560 561 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { 562 err = __recover_dot_dentries(dir, root_ino); 563 if (err) 564 goto out_iput; 565 } 566 567 if (f2fs_has_inline_dots(inode)) { 568 err = __recover_dot_dentries(inode, dir->i_ino); 569 if (err) 570 goto out_iput; 571 } 572 if (IS_ENCRYPTED(dir) && 573 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && 574 !fscrypt_has_permitted_context(dir, inode)) { 575 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", 576 dir->i_ino, inode->i_ino); 577 err = -EPERM; 578 goto out_iput; 579 } 580 out_splice: 581 #if IS_ENABLED(CONFIG_UNICODE) 582 if (!inode && IS_CASEFOLDED(dir)) { 583 /* Eventually we want to call d_add_ci(dentry, NULL) 584 * for negative dentries in the encoding case as 585 * well. For now, prevent the negative dentry 586 * from being cached. 587 */ 588 trace_f2fs_lookup_end(dir, dentry, ino, err); 589 return NULL; 590 } 591 #endif 592 new = d_splice_alias(inode, dentry); 593 trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry, 594 ino, IS_ERR(new) ? PTR_ERR(new) : err); 595 return new; 596 out_iput: 597 iput(inode); 598 out: 599 trace_f2fs_lookup_end(dir, dentry, ino, err); 600 return ERR_PTR(err); 601 } 602 603 static int f2fs_unlink(struct inode *dir, struct dentry *dentry) 604 { 605 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 606 struct inode *inode = d_inode(dentry); 607 struct f2fs_dir_entry *de; 608 struct page *page; 609 int err; 610 611 trace_f2fs_unlink_enter(dir, dentry); 612 613 if (unlikely(f2fs_cp_error(sbi))) { 614 err = -EIO; 615 goto fail; 616 } 617 618 err = f2fs_dquot_initialize(dir); 619 if (err) 620 goto fail; 621 err = f2fs_dquot_initialize(inode); 622 if (err) 623 goto fail; 624 625 de = f2fs_find_entry(dir, &dentry->d_name, &page); 626 if (!de) { 627 if (IS_ERR(page)) 628 err = PTR_ERR(page); 629 goto fail; 630 } 631 632 f2fs_balance_fs(sbi, true); 633 634 f2fs_lock_op(sbi); 635 err = f2fs_acquire_orphan_inode(sbi); 636 if (err) { 637 f2fs_unlock_op(sbi); 638 f2fs_put_page(page, 0); 639 goto fail; 640 } 641 f2fs_delete_entry(de, page, dir, inode); 642 f2fs_unlock_op(sbi); 643 644 #if IS_ENABLED(CONFIG_UNICODE) 645 /* VFS negative dentries are incompatible with Encoding and 646 * Case-insensitiveness. Eventually we'll want avoid 647 * invalidating the dentries here, alongside with returning the 648 * negative dentries at f2fs_lookup(), when it is better 649 * supported by the VFS for the CI case. 650 */ 651 if (IS_CASEFOLDED(dir)) 652 d_invalidate(dentry); 653 #endif 654 if (IS_DIRSYNC(dir)) 655 f2fs_sync_fs(sbi->sb, 1); 656 fail: 657 trace_f2fs_unlink_exit(inode, err); 658 return err; 659 } 660 661 static const char *f2fs_get_link(struct dentry *dentry, 662 struct inode *inode, 663 struct delayed_call *done) 664 { 665 const char *link = page_get_link(dentry, inode, done); 666 667 if (!IS_ERR(link) && !*link) { 668 /* this is broken symlink case */ 669 do_delayed_call(done); 670 clear_delayed_call(done); 671 link = ERR_PTR(-ENOENT); 672 } 673 return link; 674 } 675 676 static int f2fs_symlink(struct mnt_idmap *idmap, struct inode *dir, 677 struct dentry *dentry, const char *symname) 678 { 679 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 680 struct inode *inode; 681 size_t len = strlen(symname); 682 struct fscrypt_str disk_link; 683 int err; 684 685 if (unlikely(f2fs_cp_error(sbi))) 686 return -EIO; 687 if (!f2fs_is_checkpoint_ready(sbi)) 688 return -ENOSPC; 689 690 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, 691 &disk_link); 692 if (err) 693 return err; 694 695 err = f2fs_dquot_initialize(dir); 696 if (err) 697 return err; 698 699 inode = f2fs_new_inode(idmap, dir, S_IFLNK | S_IRWXUGO, NULL); 700 if (IS_ERR(inode)) 701 return PTR_ERR(inode); 702 703 if (IS_ENCRYPTED(inode)) 704 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 705 else 706 inode->i_op = &f2fs_symlink_inode_operations; 707 inode_nohighmem(inode); 708 inode->i_mapping->a_ops = &f2fs_dblock_aops; 709 710 f2fs_lock_op(sbi); 711 err = f2fs_add_link(dentry, inode); 712 if (err) 713 goto out_f2fs_handle_failed_inode; 714 f2fs_unlock_op(sbi); 715 f2fs_alloc_nid_done(sbi, inode->i_ino); 716 717 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); 718 if (err) 719 goto err_out; 720 721 err = page_symlink(inode, disk_link.name, disk_link.len); 722 723 err_out: 724 d_instantiate_new(dentry, inode); 725 726 /* 727 * Let's flush symlink data in order to avoid broken symlink as much as 728 * possible. Nevertheless, fsyncing is the best way, but there is no 729 * way to get a file descriptor in order to flush that. 730 * 731 * Note that, it needs to do dir->fsync to make this recoverable. 732 * If the symlink path is stored into inline_data, there is no 733 * performance regression. 734 */ 735 if (!err) { 736 filemap_write_and_wait_range(inode->i_mapping, 0, 737 disk_link.len - 1); 738 739 if (IS_DIRSYNC(dir)) 740 f2fs_sync_fs(sbi->sb, 1); 741 } else { 742 f2fs_unlink(dir, dentry); 743 } 744 745 f2fs_balance_fs(sbi, true); 746 goto out_free_encrypted_link; 747 748 out_f2fs_handle_failed_inode: 749 f2fs_handle_failed_inode(inode); 750 out_free_encrypted_link: 751 if (disk_link.name != (unsigned char *)symname) 752 kfree(disk_link.name); 753 return err; 754 } 755 756 static int f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir, 757 struct dentry *dentry, umode_t mode) 758 { 759 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 760 struct inode *inode; 761 int err; 762 763 if (unlikely(f2fs_cp_error(sbi))) 764 return -EIO; 765 766 err = f2fs_dquot_initialize(dir); 767 if (err) 768 return err; 769 770 inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL); 771 if (IS_ERR(inode)) 772 return PTR_ERR(inode); 773 774 inode->i_op = &f2fs_dir_inode_operations; 775 inode->i_fop = &f2fs_dir_operations; 776 inode->i_mapping->a_ops = &f2fs_dblock_aops; 777 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 778 779 set_inode_flag(inode, FI_INC_LINK); 780 f2fs_lock_op(sbi); 781 err = f2fs_add_link(dentry, inode); 782 if (err) 783 goto out_fail; 784 f2fs_unlock_op(sbi); 785 786 f2fs_alloc_nid_done(sbi, inode->i_ino); 787 788 d_instantiate_new(dentry, inode); 789 790 if (IS_DIRSYNC(dir)) 791 f2fs_sync_fs(sbi->sb, 1); 792 793 f2fs_balance_fs(sbi, true); 794 return 0; 795 796 out_fail: 797 clear_inode_flag(inode, FI_INC_LINK); 798 f2fs_handle_failed_inode(inode); 799 return err; 800 } 801 802 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) 803 { 804 struct inode *inode = d_inode(dentry); 805 806 if (f2fs_empty_dir(inode)) 807 return f2fs_unlink(dir, dentry); 808 return -ENOTEMPTY; 809 } 810 811 static int f2fs_mknod(struct mnt_idmap *idmap, struct inode *dir, 812 struct dentry *dentry, umode_t mode, dev_t rdev) 813 { 814 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 815 struct inode *inode; 816 int err = 0; 817 818 if (unlikely(f2fs_cp_error(sbi))) 819 return -EIO; 820 if (!f2fs_is_checkpoint_ready(sbi)) 821 return -ENOSPC; 822 823 err = f2fs_dquot_initialize(dir); 824 if (err) 825 return err; 826 827 inode = f2fs_new_inode(idmap, dir, mode, NULL); 828 if (IS_ERR(inode)) 829 return PTR_ERR(inode); 830 831 init_special_inode(inode, inode->i_mode, rdev); 832 inode->i_op = &f2fs_special_inode_operations; 833 834 f2fs_lock_op(sbi); 835 err = f2fs_add_link(dentry, inode); 836 if (err) 837 goto out; 838 f2fs_unlock_op(sbi); 839 840 f2fs_alloc_nid_done(sbi, inode->i_ino); 841 842 d_instantiate_new(dentry, inode); 843 844 if (IS_DIRSYNC(dir)) 845 f2fs_sync_fs(sbi->sb, 1); 846 847 f2fs_balance_fs(sbi, true); 848 return 0; 849 out: 850 f2fs_handle_failed_inode(inode); 851 return err; 852 } 853 854 static int __f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir, 855 struct file *file, umode_t mode, bool is_whiteout, 856 struct inode **new_inode) 857 { 858 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 859 struct inode *inode; 860 int err; 861 862 err = f2fs_dquot_initialize(dir); 863 if (err) 864 return err; 865 866 inode = f2fs_new_inode(idmap, dir, mode, NULL); 867 if (IS_ERR(inode)) 868 return PTR_ERR(inode); 869 870 if (is_whiteout) { 871 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); 872 inode->i_op = &f2fs_special_inode_operations; 873 } else { 874 inode->i_op = &f2fs_file_inode_operations; 875 inode->i_fop = &f2fs_file_operations; 876 inode->i_mapping->a_ops = &f2fs_dblock_aops; 877 } 878 879 f2fs_lock_op(sbi); 880 err = f2fs_acquire_orphan_inode(sbi); 881 if (err) 882 goto out; 883 884 err = f2fs_do_tmpfile(inode, dir); 885 if (err) 886 goto release_out; 887 888 /* 889 * add this non-linked tmpfile to orphan list, in this way we could 890 * remove all unused data of tmpfile after abnormal power-off. 891 */ 892 f2fs_add_orphan_inode(inode); 893 f2fs_alloc_nid_done(sbi, inode->i_ino); 894 895 if (is_whiteout) { 896 f2fs_i_links_write(inode, false); 897 898 spin_lock(&inode->i_lock); 899 inode->i_state |= I_LINKABLE; 900 spin_unlock(&inode->i_lock); 901 } else { 902 if (file) 903 d_tmpfile(file, inode); 904 else 905 f2fs_i_links_write(inode, false); 906 } 907 /* link_count was changed by d_tmpfile as well. */ 908 f2fs_unlock_op(sbi); 909 unlock_new_inode(inode); 910 911 if (new_inode) 912 *new_inode = inode; 913 914 f2fs_balance_fs(sbi, true); 915 return 0; 916 917 release_out: 918 f2fs_release_orphan_inode(sbi); 919 out: 920 f2fs_handle_failed_inode(inode); 921 return err; 922 } 923 924 static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir, 925 struct file *file, umode_t mode) 926 { 927 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 928 int err; 929 930 if (unlikely(f2fs_cp_error(sbi))) 931 return -EIO; 932 if (!f2fs_is_checkpoint_ready(sbi)) 933 return -ENOSPC; 934 935 err = __f2fs_tmpfile(idmap, dir, file, mode, false, NULL); 936 937 return finish_open_simple(file, err); 938 } 939 940 static int f2fs_create_whiteout(struct mnt_idmap *idmap, 941 struct inode *dir, struct inode **whiteout) 942 { 943 return __f2fs_tmpfile(idmap, dir, NULL, 944 S_IFCHR | WHITEOUT_MODE, true, whiteout); 945 } 946 947 int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir, 948 struct inode **new_inode) 949 { 950 return __f2fs_tmpfile(idmap, dir, NULL, S_IFREG, false, new_inode); 951 } 952 953 static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir, 954 struct dentry *old_dentry, struct inode *new_dir, 955 struct dentry *new_dentry, unsigned int flags) 956 { 957 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); 958 struct inode *old_inode = d_inode(old_dentry); 959 struct inode *new_inode = d_inode(new_dentry); 960 struct inode *whiteout = NULL; 961 struct page *old_dir_page = NULL; 962 struct page *old_page, *new_page = NULL; 963 struct f2fs_dir_entry *old_dir_entry = NULL; 964 struct f2fs_dir_entry *old_entry; 965 struct f2fs_dir_entry *new_entry; 966 int err; 967 968 if (unlikely(f2fs_cp_error(sbi))) 969 return -EIO; 970 if (!f2fs_is_checkpoint_ready(sbi)) 971 return -ENOSPC; 972 973 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 974 (!projid_eq(F2FS_I(new_dir)->i_projid, 975 F2FS_I(old_dentry->d_inode)->i_projid))) 976 return -EXDEV; 977 978 /* 979 * If new_inode is null, the below renaming flow will 980 * add a link in old_dir which can convert inline_dir. 981 * After then, if we failed to get the entry due to other 982 * reasons like ENOMEM, we had to remove the new entry. 983 * Instead of adding such the error handling routine, let's 984 * simply convert first here. 985 */ 986 if (old_dir == new_dir && !new_inode) { 987 err = f2fs_try_convert_inline_dir(old_dir, new_dentry); 988 if (err) 989 return err; 990 } 991 992 if (flags & RENAME_WHITEOUT) { 993 err = f2fs_create_whiteout(idmap, old_dir, &whiteout); 994 if (err) 995 return err; 996 } 997 998 err = f2fs_dquot_initialize(old_dir); 999 if (err) 1000 goto out; 1001 1002 err = f2fs_dquot_initialize(new_dir); 1003 if (err) 1004 goto out; 1005 1006 if (new_inode) { 1007 err = f2fs_dquot_initialize(new_inode); 1008 if (err) 1009 goto out; 1010 } 1011 1012 err = -ENOENT; 1013 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); 1014 if (!old_entry) { 1015 if (IS_ERR(old_page)) 1016 err = PTR_ERR(old_page); 1017 goto out; 1018 } 1019 1020 if (S_ISDIR(old_inode->i_mode)) { 1021 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); 1022 if (!old_dir_entry) { 1023 if (IS_ERR(old_dir_page)) 1024 err = PTR_ERR(old_dir_page); 1025 goto out_old; 1026 } 1027 } 1028 1029 if (new_inode) { 1030 1031 err = -ENOTEMPTY; 1032 if (old_dir_entry && !f2fs_empty_dir(new_inode)) 1033 goto out_dir; 1034 1035 err = -ENOENT; 1036 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, 1037 &new_page); 1038 if (!new_entry) { 1039 if (IS_ERR(new_page)) 1040 err = PTR_ERR(new_page); 1041 goto out_dir; 1042 } 1043 1044 f2fs_balance_fs(sbi, true); 1045 1046 f2fs_lock_op(sbi); 1047 1048 err = f2fs_acquire_orphan_inode(sbi); 1049 if (err) 1050 goto put_out_dir; 1051 1052 f2fs_set_link(new_dir, new_entry, new_page, old_inode); 1053 new_page = NULL; 1054 1055 inode_set_ctime_current(new_inode); 1056 f2fs_down_write(&F2FS_I(new_inode)->i_sem); 1057 if (old_dir_entry) 1058 f2fs_i_links_write(new_inode, false); 1059 f2fs_i_links_write(new_inode, false); 1060 f2fs_up_write(&F2FS_I(new_inode)->i_sem); 1061 1062 if (!new_inode->i_nlink) 1063 f2fs_add_orphan_inode(new_inode); 1064 else 1065 f2fs_release_orphan_inode(sbi); 1066 } else { 1067 f2fs_balance_fs(sbi, true); 1068 1069 f2fs_lock_op(sbi); 1070 1071 err = f2fs_add_link(new_dentry, old_inode); 1072 if (err) { 1073 f2fs_unlock_op(sbi); 1074 goto out_dir; 1075 } 1076 1077 if (old_dir_entry) 1078 f2fs_i_links_write(new_dir, true); 1079 } 1080 1081 f2fs_down_write(&F2FS_I(old_inode)->i_sem); 1082 if (!old_dir_entry || whiteout) 1083 file_lost_pino(old_inode); 1084 else 1085 /* adjust dir's i_pino to pass fsck check */ 1086 f2fs_i_pino_write(old_inode, new_dir->i_ino); 1087 f2fs_up_write(&F2FS_I(old_inode)->i_sem); 1088 1089 inode_set_ctime_current(old_inode); 1090 f2fs_mark_inode_dirty_sync(old_inode, false); 1091 1092 f2fs_delete_entry(old_entry, old_page, old_dir, NULL); 1093 old_page = NULL; 1094 1095 if (whiteout) { 1096 set_inode_flag(whiteout, FI_INC_LINK); 1097 err = f2fs_add_link(old_dentry, whiteout); 1098 if (err) 1099 goto put_out_dir; 1100 1101 spin_lock(&whiteout->i_lock); 1102 whiteout->i_state &= ~I_LINKABLE; 1103 spin_unlock(&whiteout->i_lock); 1104 1105 iput(whiteout); 1106 } 1107 1108 if (old_dir_entry) { 1109 if (old_dir != new_dir && !whiteout) 1110 f2fs_set_link(old_inode, old_dir_entry, 1111 old_dir_page, new_dir); 1112 else 1113 f2fs_put_page(old_dir_page, 0); 1114 f2fs_i_links_write(old_dir, false); 1115 } 1116 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { 1117 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); 1118 if (S_ISDIR(old_inode->i_mode)) 1119 f2fs_add_ino_entry(sbi, old_inode->i_ino, 1120 TRANS_DIR_INO); 1121 } 1122 1123 f2fs_unlock_op(sbi); 1124 1125 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) 1126 f2fs_sync_fs(sbi->sb, 1); 1127 1128 f2fs_update_time(sbi, REQ_TIME); 1129 return 0; 1130 1131 put_out_dir: 1132 f2fs_unlock_op(sbi); 1133 f2fs_put_page(new_page, 0); 1134 out_dir: 1135 if (old_dir_entry) 1136 f2fs_put_page(old_dir_page, 0); 1137 out_old: 1138 f2fs_put_page(old_page, 0); 1139 out: 1140 iput(whiteout); 1141 return err; 1142 } 1143 1144 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, 1145 struct inode *new_dir, struct dentry *new_dentry) 1146 { 1147 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); 1148 struct inode *old_inode = d_inode(old_dentry); 1149 struct inode *new_inode = d_inode(new_dentry); 1150 struct page *old_dir_page, *new_dir_page; 1151 struct page *old_page, *new_page; 1152 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; 1153 struct f2fs_dir_entry *old_entry, *new_entry; 1154 int old_nlink = 0, new_nlink = 0; 1155 int err; 1156 1157 if (unlikely(f2fs_cp_error(sbi))) 1158 return -EIO; 1159 if (!f2fs_is_checkpoint_ready(sbi)) 1160 return -ENOSPC; 1161 1162 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 1163 !projid_eq(F2FS_I(new_dir)->i_projid, 1164 F2FS_I(old_dentry->d_inode)->i_projid)) || 1165 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 1166 !projid_eq(F2FS_I(old_dir)->i_projid, 1167 F2FS_I(new_dentry->d_inode)->i_projid))) 1168 return -EXDEV; 1169 1170 err = f2fs_dquot_initialize(old_dir); 1171 if (err) 1172 goto out; 1173 1174 err = f2fs_dquot_initialize(new_dir); 1175 if (err) 1176 goto out; 1177 1178 err = -ENOENT; 1179 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); 1180 if (!old_entry) { 1181 if (IS_ERR(old_page)) 1182 err = PTR_ERR(old_page); 1183 goto out; 1184 } 1185 1186 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); 1187 if (!new_entry) { 1188 if (IS_ERR(new_page)) 1189 err = PTR_ERR(new_page); 1190 goto out_old; 1191 } 1192 1193 /* prepare for updating ".." directory entry info later */ 1194 if (old_dir != new_dir) { 1195 if (S_ISDIR(old_inode->i_mode)) { 1196 old_dir_entry = f2fs_parent_dir(old_inode, 1197 &old_dir_page); 1198 if (!old_dir_entry) { 1199 if (IS_ERR(old_dir_page)) 1200 err = PTR_ERR(old_dir_page); 1201 goto out_new; 1202 } 1203 } 1204 1205 if (S_ISDIR(new_inode->i_mode)) { 1206 new_dir_entry = f2fs_parent_dir(new_inode, 1207 &new_dir_page); 1208 if (!new_dir_entry) { 1209 if (IS_ERR(new_dir_page)) 1210 err = PTR_ERR(new_dir_page); 1211 goto out_old_dir; 1212 } 1213 } 1214 } 1215 1216 /* 1217 * If cross rename between file and directory those are not 1218 * in the same directory, we will inc nlink of file's parent 1219 * later, so we should check upper boundary of its nlink. 1220 */ 1221 if ((!old_dir_entry || !new_dir_entry) && 1222 old_dir_entry != new_dir_entry) { 1223 old_nlink = old_dir_entry ? -1 : 1; 1224 new_nlink = -old_nlink; 1225 err = -EMLINK; 1226 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || 1227 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) 1228 goto out_new_dir; 1229 } 1230 1231 f2fs_balance_fs(sbi, true); 1232 1233 f2fs_lock_op(sbi); 1234 1235 /* update ".." directory entry info of old dentry */ 1236 if (old_dir_entry) 1237 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); 1238 1239 /* update ".." directory entry info of new dentry */ 1240 if (new_dir_entry) 1241 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); 1242 1243 /* update directory entry info of old dir inode */ 1244 f2fs_set_link(old_dir, old_entry, old_page, new_inode); 1245 1246 f2fs_down_write(&F2FS_I(old_inode)->i_sem); 1247 if (!old_dir_entry) 1248 file_lost_pino(old_inode); 1249 else 1250 /* adjust dir's i_pino to pass fsck check */ 1251 f2fs_i_pino_write(old_inode, new_dir->i_ino); 1252 f2fs_up_write(&F2FS_I(old_inode)->i_sem); 1253 1254 inode_set_ctime_current(old_dir); 1255 if (old_nlink) { 1256 f2fs_down_write(&F2FS_I(old_dir)->i_sem); 1257 f2fs_i_links_write(old_dir, old_nlink > 0); 1258 f2fs_up_write(&F2FS_I(old_dir)->i_sem); 1259 } 1260 f2fs_mark_inode_dirty_sync(old_dir, false); 1261 1262 /* update directory entry info of new dir inode */ 1263 f2fs_set_link(new_dir, new_entry, new_page, old_inode); 1264 1265 f2fs_down_write(&F2FS_I(new_inode)->i_sem); 1266 if (!new_dir_entry) 1267 file_lost_pino(new_inode); 1268 else 1269 /* adjust dir's i_pino to pass fsck check */ 1270 f2fs_i_pino_write(new_inode, old_dir->i_ino); 1271 f2fs_up_write(&F2FS_I(new_inode)->i_sem); 1272 1273 inode_set_ctime_current(new_dir); 1274 if (new_nlink) { 1275 f2fs_down_write(&F2FS_I(new_dir)->i_sem); 1276 f2fs_i_links_write(new_dir, new_nlink > 0); 1277 f2fs_up_write(&F2FS_I(new_dir)->i_sem); 1278 } 1279 f2fs_mark_inode_dirty_sync(new_dir, false); 1280 1281 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { 1282 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); 1283 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); 1284 } 1285 1286 f2fs_unlock_op(sbi); 1287 1288 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) 1289 f2fs_sync_fs(sbi->sb, 1); 1290 1291 f2fs_update_time(sbi, REQ_TIME); 1292 return 0; 1293 out_new_dir: 1294 if (new_dir_entry) { 1295 f2fs_put_page(new_dir_page, 0); 1296 } 1297 out_old_dir: 1298 if (old_dir_entry) { 1299 f2fs_put_page(old_dir_page, 0); 1300 } 1301 out_new: 1302 f2fs_put_page(new_page, 0); 1303 out_old: 1304 f2fs_put_page(old_page, 0); 1305 out: 1306 return err; 1307 } 1308 1309 static int f2fs_rename2(struct mnt_idmap *idmap, 1310 struct inode *old_dir, struct dentry *old_dentry, 1311 struct inode *new_dir, struct dentry *new_dentry, 1312 unsigned int flags) 1313 { 1314 int err; 1315 1316 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) 1317 return -EINVAL; 1318 1319 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, 1320 flags); 1321 if (err) 1322 return err; 1323 1324 if (flags & RENAME_EXCHANGE) { 1325 return f2fs_cross_rename(old_dir, old_dentry, 1326 new_dir, new_dentry); 1327 } 1328 /* 1329 * VFS has already handled the new dentry existence case, 1330 * here, we just deal with "RENAME_NOREPLACE" as regular rename. 1331 */ 1332 return f2fs_rename(idmap, old_dir, old_dentry, 1333 new_dir, new_dentry, flags); 1334 } 1335 1336 static const char *f2fs_encrypted_get_link(struct dentry *dentry, 1337 struct inode *inode, 1338 struct delayed_call *done) 1339 { 1340 struct page *page; 1341 const char *target; 1342 1343 if (!dentry) 1344 return ERR_PTR(-ECHILD); 1345 1346 page = read_mapping_page(inode->i_mapping, 0, NULL); 1347 if (IS_ERR(page)) 1348 return ERR_CAST(page); 1349 1350 target = fscrypt_get_symlink(inode, page_address(page), 1351 inode->i_sb->s_blocksize, done); 1352 put_page(page); 1353 return target; 1354 } 1355 1356 static int f2fs_encrypted_symlink_getattr(struct mnt_idmap *idmap, 1357 const struct path *path, 1358 struct kstat *stat, u32 request_mask, 1359 unsigned int query_flags) 1360 { 1361 f2fs_getattr(idmap, path, stat, request_mask, query_flags); 1362 1363 return fscrypt_symlink_getattr(path, stat); 1364 } 1365 1366 const struct inode_operations f2fs_encrypted_symlink_inode_operations = { 1367 .get_link = f2fs_encrypted_get_link, 1368 .getattr = f2fs_encrypted_symlink_getattr, 1369 .setattr = f2fs_setattr, 1370 .listxattr = f2fs_listxattr, 1371 }; 1372 1373 const struct inode_operations f2fs_dir_inode_operations = { 1374 .create = f2fs_create, 1375 .lookup = f2fs_lookup, 1376 .link = f2fs_link, 1377 .unlink = f2fs_unlink, 1378 .symlink = f2fs_symlink, 1379 .mkdir = f2fs_mkdir, 1380 .rmdir = f2fs_rmdir, 1381 .mknod = f2fs_mknod, 1382 .rename = f2fs_rename2, 1383 .tmpfile = f2fs_tmpfile, 1384 .getattr = f2fs_getattr, 1385 .setattr = f2fs_setattr, 1386 .get_inode_acl = f2fs_get_acl, 1387 .set_acl = f2fs_set_acl, 1388 .listxattr = f2fs_listxattr, 1389 .fiemap = f2fs_fiemap, 1390 .fileattr_get = f2fs_fileattr_get, 1391 .fileattr_set = f2fs_fileattr_set, 1392 }; 1393 1394 const struct inode_operations f2fs_symlink_inode_operations = { 1395 .get_link = f2fs_get_link, 1396 .getattr = f2fs_getattr, 1397 .setattr = f2fs_setattr, 1398 .listxattr = f2fs_listxattr, 1399 }; 1400 1401 const struct inode_operations f2fs_special_inode_operations = { 1402 .getattr = f2fs_getattr, 1403 .setattr = f2fs_setattr, 1404 .get_inode_acl = f2fs_get_acl, 1405 .set_acl = f2fs_set_acl, 1406 .listxattr = f2fs_listxattr, 1407 }; 1408