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 user_namespace *mnt_userns, 26 struct inode *dir, umode_t mode) 27 { 28 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 29 nid_t ino; 30 struct inode *inode; 31 bool nid_free = false; 32 bool encrypt = false; 33 int xattr_size = 0; 34 int err; 35 36 inode = new_inode(dir->i_sb); 37 if (!inode) 38 return ERR_PTR(-ENOMEM); 39 40 if (!f2fs_alloc_nid(sbi, &ino)) { 41 err = -ENOSPC; 42 goto fail; 43 } 44 45 nid_free = true; 46 47 inode_init_owner(mnt_userns, inode, dir, mode); 48 49 inode->i_ino = ino; 50 inode->i_blocks = 0; 51 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); 52 F2FS_I(inode)->i_crtime = inode->i_mtime; 53 inode->i_generation = get_random_u32(); 54 55 if (S_ISDIR(inode->i_mode)) 56 F2FS_I(inode)->i_current_depth = 1; 57 58 err = insert_inode_locked(inode); 59 if (err) { 60 err = -EINVAL; 61 goto fail; 62 } 63 64 if (f2fs_sb_has_project_quota(sbi) && 65 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) 66 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; 67 else 68 F2FS_I(inode)->i_projid = make_kprojid(mnt_userns, 69 F2FS_DEF_PROJID); 70 71 err = fscrypt_prepare_new_inode(dir, inode, &encrypt); 72 if (err) 73 goto fail_drop; 74 75 err = f2fs_dquot_initialize(inode); 76 if (err) 77 goto fail_drop; 78 79 set_inode_flag(inode, FI_NEW_INODE); 80 81 if (encrypt) 82 f2fs_set_encrypted_inode(inode); 83 84 if (f2fs_sb_has_extra_attr(sbi)) { 85 set_inode_flag(inode, FI_EXTRA_ATTR); 86 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; 87 } 88 89 if (test_opt(sbi, INLINE_XATTR)) 90 set_inode_flag(inode, FI_INLINE_XATTR); 91 92 if (f2fs_may_inline_dentry(inode)) 93 set_inode_flag(inode, FI_INLINE_DENTRY); 94 95 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 96 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); 97 if (f2fs_has_inline_xattr(inode)) 98 xattr_size = F2FS_OPTION(sbi).inline_xattr_size; 99 /* Otherwise, will be 0 */ 100 } else if (f2fs_has_inline_xattr(inode) || 101 f2fs_has_inline_dentry(inode)) { 102 xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 103 } 104 F2FS_I(inode)->i_inline_xattr_size = xattr_size; 105 106 f2fs_init_extent_tree(inode, NULL); 107 108 F2FS_I(inode)->i_flags = 109 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); 110 111 if (S_ISDIR(inode->i_mode)) 112 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL; 113 114 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) 115 set_inode_flag(inode, FI_PROJ_INHERIT); 116 117 if (f2fs_sb_has_compression(sbi)) { 118 /* Inherit the compression flag in directory */ 119 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) && 120 f2fs_may_compress(inode)) 121 set_compress_context(inode); 122 } 123 124 /* Should enable inline_data after compression set */ 125 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) 126 set_inode_flag(inode, FI_INLINE_DATA); 127 128 stat_inc_inline_xattr(inode); 129 stat_inc_inline_inode(inode); 130 stat_inc_inline_dir(inode); 131 132 f2fs_set_inode_flags(inode); 133 134 trace_f2fs_new_inode(inode, 0); 135 return inode; 136 137 fail: 138 trace_f2fs_new_inode(inode, err); 139 make_bad_inode(inode); 140 if (nid_free) 141 set_inode_flag(inode, FI_FREE_NID); 142 iput(inode); 143 return ERR_PTR(err); 144 fail_drop: 145 trace_f2fs_new_inode(inode, err); 146 dquot_drop(inode); 147 inode->i_flags |= S_NOQUOTA; 148 if (nid_free) 149 set_inode_flag(inode, FI_FREE_NID); 150 clear_nlink(inode); 151 unlock_new_inode(inode); 152 iput(inode); 153 return ERR_PTR(err); 154 } 155 156 static inline int is_extension_exist(const unsigned char *s, const char *sub, 157 bool tmp_ext) 158 { 159 size_t slen = strlen(s); 160 size_t sublen = strlen(sub); 161 int i; 162 163 if (sublen == 1 && *sub == '*') 164 return 1; 165 166 /* 167 * filename format of multimedia file should be defined as: 168 * "filename + '.' + extension + (optional: '.' + temp extension)". 169 */ 170 if (slen < sublen + 2) 171 return 0; 172 173 if (!tmp_ext) { 174 /* file has no temp extension */ 175 if (s[slen - sublen - 1] != '.') 176 return 0; 177 return !strncasecmp(s + slen - sublen, sub, sublen); 178 } 179 180 for (i = 1; i < slen - sublen; i++) { 181 if (s[i] != '.') 182 continue; 183 if (!strncasecmp(s + i + 1, sub, sublen)) 184 return 1; 185 } 186 187 return 0; 188 } 189 190 /* 191 * Set file's temperature for hot/cold data separation 192 */ 193 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, 194 const unsigned char *name) 195 { 196 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; 197 int i, cold_count, hot_count; 198 199 f2fs_down_read(&sbi->sb_lock); 200 201 cold_count = le32_to_cpu(sbi->raw_super->extension_count); 202 hot_count = sbi->raw_super->hot_ext_count; 203 204 for (i = 0; i < cold_count + hot_count; i++) { 205 if (is_extension_exist(name, extlist[i], true)) 206 break; 207 } 208 209 f2fs_up_read(&sbi->sb_lock); 210 211 if (i == cold_count + hot_count) 212 return; 213 214 if (i < cold_count) 215 file_set_cold(inode); 216 else 217 file_set_hot(inode); 218 } 219 220 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, 221 bool hot, bool set) 222 { 223 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; 224 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 225 int hot_count = sbi->raw_super->hot_ext_count; 226 int total_count = cold_count + hot_count; 227 int start, count; 228 int i; 229 230 if (set) { 231 if (total_count == F2FS_MAX_EXTENSION) 232 return -EINVAL; 233 } else { 234 if (!hot && !cold_count) 235 return -EINVAL; 236 if (hot && !hot_count) 237 return -EINVAL; 238 } 239 240 if (hot) { 241 start = cold_count; 242 count = total_count; 243 } else { 244 start = 0; 245 count = cold_count; 246 } 247 248 for (i = start; i < count; i++) { 249 if (strcmp(name, extlist[i])) 250 continue; 251 252 if (set) 253 return -EINVAL; 254 255 memcpy(extlist[i], extlist[i + 1], 256 F2FS_EXTENSION_LEN * (total_count - i - 1)); 257 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); 258 if (hot) 259 sbi->raw_super->hot_ext_count = hot_count - 1; 260 else 261 sbi->raw_super->extension_count = 262 cpu_to_le32(cold_count - 1); 263 return 0; 264 } 265 266 if (!set) 267 return -EINVAL; 268 269 if (hot) { 270 memcpy(extlist[count], name, strlen(name)); 271 sbi->raw_super->hot_ext_count = hot_count + 1; 272 } else { 273 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; 274 275 memcpy(buf, &extlist[cold_count], 276 F2FS_EXTENSION_LEN * hot_count); 277 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); 278 memcpy(extlist[cold_count], name, strlen(name)); 279 memcpy(&extlist[cold_count + 1], buf, 280 F2FS_EXTENSION_LEN * hot_count); 281 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); 282 } 283 return 0; 284 } 285 286 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode, 287 const unsigned char *name) 288 { 289 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; 290 unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions; 291 unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions; 292 unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 293 unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 294 int i, cold_count, hot_count; 295 296 if (!f2fs_sb_has_compression(sbi) || 297 F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL || 298 !f2fs_may_compress(inode) || 299 (!ext_cnt && !noext_cnt)) 300 return; 301 302 f2fs_down_read(&sbi->sb_lock); 303 304 cold_count = le32_to_cpu(sbi->raw_super->extension_count); 305 hot_count = sbi->raw_super->hot_ext_count; 306 307 for (i = cold_count; i < cold_count + hot_count; i++) { 308 if (is_extension_exist(name, extlist[i], false)) { 309 f2fs_up_read(&sbi->sb_lock); 310 return; 311 } 312 } 313 314 f2fs_up_read(&sbi->sb_lock); 315 316 for (i = 0; i < noext_cnt; i++) { 317 if (is_extension_exist(name, noext[i], false)) { 318 f2fs_disable_compressed_file(inode); 319 return; 320 } 321 } 322 323 if (is_inode_flag_set(inode, FI_COMPRESSED_FILE)) 324 return; 325 326 for (i = 0; i < ext_cnt; i++) { 327 if (!is_extension_exist(name, ext[i], false)) 328 continue; 329 330 /* Do not use inline_data with compression */ 331 stat_dec_inline_inode(inode); 332 clear_inode_flag(inode, FI_INLINE_DATA); 333 set_compress_context(inode); 334 return; 335 } 336 } 337 338 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir, 339 struct dentry *dentry, umode_t mode, bool excl) 340 { 341 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 342 struct inode *inode; 343 nid_t ino = 0; 344 int err; 345 346 if (unlikely(f2fs_cp_error(sbi))) 347 return -EIO; 348 if (!f2fs_is_checkpoint_ready(sbi)) 349 return -ENOSPC; 350 351 err = f2fs_dquot_initialize(dir); 352 if (err) 353 return err; 354 355 inode = f2fs_new_inode(mnt_userns, dir, mode); 356 if (IS_ERR(inode)) 357 return PTR_ERR(inode); 358 359 if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) 360 set_file_temperature(sbi, inode, dentry->d_name.name); 361 362 set_compress_inode(sbi, inode, dentry->d_name.name); 363 364 inode->i_op = &f2fs_file_inode_operations; 365 inode->i_fop = &f2fs_file_operations; 366 inode->i_mapping->a_ops = &f2fs_dblock_aops; 367 ino = inode->i_ino; 368 369 f2fs_lock_op(sbi); 370 err = f2fs_add_link(dentry, inode); 371 if (err) 372 goto out; 373 f2fs_unlock_op(sbi); 374 375 f2fs_alloc_nid_done(sbi, ino); 376 377 d_instantiate_new(dentry, inode); 378 379 if (IS_DIRSYNC(dir)) 380 f2fs_sync_fs(sbi->sb, 1); 381 382 f2fs_balance_fs(sbi, true); 383 return 0; 384 out: 385 f2fs_handle_failed_inode(inode); 386 return err; 387 } 388 389 static int f2fs_link(struct dentry *old_dentry, struct inode *dir, 390 struct dentry *dentry) 391 { 392 struct inode *inode = d_inode(old_dentry); 393 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 394 int err; 395 396 if (unlikely(f2fs_cp_error(sbi))) 397 return -EIO; 398 if (!f2fs_is_checkpoint_ready(sbi)) 399 return -ENOSPC; 400 401 err = fscrypt_prepare_link(old_dentry, dir, dentry); 402 if (err) 403 return err; 404 405 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && 406 (!projid_eq(F2FS_I(dir)->i_projid, 407 F2FS_I(old_dentry->d_inode)->i_projid))) 408 return -EXDEV; 409 410 err = f2fs_dquot_initialize(dir); 411 if (err) 412 return err; 413 414 f2fs_balance_fs(sbi, true); 415 416 inode->i_ctime = current_time(inode); 417 ihold(inode); 418 419 set_inode_flag(inode, FI_INC_LINK); 420 f2fs_lock_op(sbi); 421 err = f2fs_add_link(dentry, inode); 422 if (err) 423 goto out; 424 f2fs_unlock_op(sbi); 425 426 d_instantiate(dentry, inode); 427 428 if (IS_DIRSYNC(dir)) 429 f2fs_sync_fs(sbi->sb, 1); 430 return 0; 431 out: 432 clear_inode_flag(inode, FI_INC_LINK); 433 iput(inode); 434 f2fs_unlock_op(sbi); 435 return err; 436 } 437 438 struct dentry *f2fs_get_parent(struct dentry *child) 439 { 440 struct page *page; 441 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page); 442 443 if (!ino) { 444 if (IS_ERR(page)) 445 return ERR_CAST(page); 446 return ERR_PTR(-ENOENT); 447 } 448 return d_obtain_alias(f2fs_iget(child->d_sb, ino)); 449 } 450 451 static int __recover_dot_dentries(struct inode *dir, nid_t pino) 452 { 453 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 454 struct qstr dot = QSTR_INIT(".", 1); 455 struct qstr dotdot = QSTR_INIT("..", 2); 456 struct f2fs_dir_entry *de; 457 struct page *page; 458 int err = 0; 459 460 if (f2fs_readonly(sbi->sb)) { 461 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint", 462 dir->i_ino, pino); 463 return 0; 464 } 465 466 if (!S_ISDIR(dir->i_mode)) { 467 f2fs_err(sbi, "inconsistent inode status, skip recovering inline_dots inode (ino:%lu, i_mode:%u, pino:%u)", 468 dir->i_ino, dir->i_mode, pino); 469 set_sbi_flag(sbi, SBI_NEED_FSCK); 470 return -ENOTDIR; 471 } 472 473 err = f2fs_dquot_initialize(dir); 474 if (err) 475 return err; 476 477 f2fs_balance_fs(sbi, true); 478 479 f2fs_lock_op(sbi); 480 481 de = f2fs_find_entry(dir, &dot, &page); 482 if (de) { 483 f2fs_put_page(page, 0); 484 } else if (IS_ERR(page)) { 485 err = PTR_ERR(page); 486 goto out; 487 } else { 488 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); 489 if (err) 490 goto out; 491 } 492 493 de = f2fs_find_entry(dir, &dotdot, &page); 494 if (de) 495 f2fs_put_page(page, 0); 496 else if (IS_ERR(page)) 497 err = PTR_ERR(page); 498 else 499 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); 500 out: 501 if (!err) 502 clear_inode_flag(dir, FI_INLINE_DOTS); 503 504 f2fs_unlock_op(sbi); 505 return err; 506 } 507 508 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, 509 unsigned int flags) 510 { 511 struct inode *inode = NULL; 512 struct f2fs_dir_entry *de; 513 struct page *page; 514 struct dentry *new; 515 nid_t ino = -1; 516 int err = 0; 517 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); 518 struct f2fs_filename fname; 519 520 trace_f2fs_lookup_start(dir, dentry, flags); 521 522 if (dentry->d_name.len > F2FS_NAME_LEN) { 523 err = -ENAMETOOLONG; 524 goto out; 525 } 526 527 err = f2fs_prepare_lookup(dir, dentry, &fname); 528 generic_set_encrypted_ci_d_ops(dentry); 529 if (err == -ENOENT) 530 goto out_splice; 531 if (err) 532 goto out; 533 de = __f2fs_find_entry(dir, &fname, &page); 534 f2fs_free_filename(&fname); 535 536 if (!de) { 537 if (IS_ERR(page)) { 538 err = PTR_ERR(page); 539 goto out; 540 } 541 err = -ENOENT; 542 goto out_splice; 543 } 544 545 ino = le32_to_cpu(de->ino); 546 f2fs_put_page(page, 0); 547 548 inode = f2fs_iget(dir->i_sb, ino); 549 if (IS_ERR(inode)) { 550 err = PTR_ERR(inode); 551 goto out; 552 } 553 554 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { 555 err = __recover_dot_dentries(dir, root_ino); 556 if (err) 557 goto out_iput; 558 } 559 560 if (f2fs_has_inline_dots(inode)) { 561 err = __recover_dot_dentries(inode, dir->i_ino); 562 if (err) 563 goto out_iput; 564 } 565 if (IS_ENCRYPTED(dir) && 566 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && 567 !fscrypt_has_permitted_context(dir, inode)) { 568 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", 569 dir->i_ino, inode->i_ino); 570 err = -EPERM; 571 goto out_iput; 572 } 573 out_splice: 574 #if IS_ENABLED(CONFIG_UNICODE) 575 if (!inode && IS_CASEFOLDED(dir)) { 576 /* Eventually we want to call d_add_ci(dentry, NULL) 577 * for negative dentries in the encoding case as 578 * well. For now, prevent the negative dentry 579 * from being cached. 580 */ 581 trace_f2fs_lookup_end(dir, dentry, ino, err); 582 return NULL; 583 } 584 #endif 585 new = d_splice_alias(inode, dentry); 586 err = PTR_ERR_OR_ZERO(new); 587 trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err); 588 return new; 589 out_iput: 590 iput(inode); 591 out: 592 trace_f2fs_lookup_end(dir, dentry, ino, err); 593 return ERR_PTR(err); 594 } 595 596 static int f2fs_unlink(struct inode *dir, struct dentry *dentry) 597 { 598 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 599 struct inode *inode = d_inode(dentry); 600 struct f2fs_dir_entry *de; 601 struct page *page; 602 int err; 603 604 trace_f2fs_unlink_enter(dir, dentry); 605 606 if (unlikely(f2fs_cp_error(sbi))) { 607 err = -EIO; 608 goto fail; 609 } 610 611 err = f2fs_dquot_initialize(dir); 612 if (err) 613 goto fail; 614 err = f2fs_dquot_initialize(inode); 615 if (err) 616 goto fail; 617 618 de = f2fs_find_entry(dir, &dentry->d_name, &page); 619 if (!de) { 620 if (IS_ERR(page)) 621 err = PTR_ERR(page); 622 goto fail; 623 } 624 625 f2fs_balance_fs(sbi, true); 626 627 f2fs_lock_op(sbi); 628 err = f2fs_acquire_orphan_inode(sbi); 629 if (err) { 630 f2fs_unlock_op(sbi); 631 f2fs_put_page(page, 0); 632 goto fail; 633 } 634 f2fs_delete_entry(de, page, dir, inode); 635 #if IS_ENABLED(CONFIG_UNICODE) 636 /* VFS negative dentries are incompatible with Encoding and 637 * Case-insensitiveness. Eventually we'll want avoid 638 * invalidating the dentries here, alongside with returning the 639 * negative dentries at f2fs_lookup(), when it is better 640 * supported by the VFS for the CI case. 641 */ 642 if (IS_CASEFOLDED(dir)) 643 d_invalidate(dentry); 644 #endif 645 f2fs_unlock_op(sbi); 646 647 if (IS_DIRSYNC(dir)) 648 f2fs_sync_fs(sbi->sb, 1); 649 fail: 650 trace_f2fs_unlink_exit(inode, err); 651 return err; 652 } 653 654 static const char *f2fs_get_link(struct dentry *dentry, 655 struct inode *inode, 656 struct delayed_call *done) 657 { 658 const char *link = page_get_link(dentry, inode, done); 659 660 if (!IS_ERR(link) && !*link) { 661 /* this is broken symlink case */ 662 do_delayed_call(done); 663 clear_delayed_call(done); 664 link = ERR_PTR(-ENOENT); 665 } 666 return link; 667 } 668 669 static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir, 670 struct dentry *dentry, const char *symname) 671 { 672 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 673 struct inode *inode; 674 size_t len = strlen(symname); 675 struct fscrypt_str disk_link; 676 int err; 677 678 if (unlikely(f2fs_cp_error(sbi))) 679 return -EIO; 680 if (!f2fs_is_checkpoint_ready(sbi)) 681 return -ENOSPC; 682 683 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, 684 &disk_link); 685 if (err) 686 return err; 687 688 err = f2fs_dquot_initialize(dir); 689 if (err) 690 return err; 691 692 inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO); 693 if (IS_ERR(inode)) 694 return PTR_ERR(inode); 695 696 if (IS_ENCRYPTED(inode)) 697 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 698 else 699 inode->i_op = &f2fs_symlink_inode_operations; 700 inode_nohighmem(inode); 701 inode->i_mapping->a_ops = &f2fs_dblock_aops; 702 703 f2fs_lock_op(sbi); 704 err = f2fs_add_link(dentry, inode); 705 if (err) 706 goto out_f2fs_handle_failed_inode; 707 f2fs_unlock_op(sbi); 708 f2fs_alloc_nid_done(sbi, inode->i_ino); 709 710 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); 711 if (err) 712 goto err_out; 713 714 err = page_symlink(inode, disk_link.name, disk_link.len); 715 716 err_out: 717 d_instantiate_new(dentry, inode); 718 719 /* 720 * Let's flush symlink data in order to avoid broken symlink as much as 721 * possible. Nevertheless, fsyncing is the best way, but there is no 722 * way to get a file descriptor in order to flush that. 723 * 724 * Note that, it needs to do dir->fsync to make this recoverable. 725 * If the symlink path is stored into inline_data, there is no 726 * performance regression. 727 */ 728 if (!err) { 729 filemap_write_and_wait_range(inode->i_mapping, 0, 730 disk_link.len - 1); 731 732 if (IS_DIRSYNC(dir)) 733 f2fs_sync_fs(sbi->sb, 1); 734 } else { 735 f2fs_unlink(dir, dentry); 736 } 737 738 f2fs_balance_fs(sbi, true); 739 goto out_free_encrypted_link; 740 741 out_f2fs_handle_failed_inode: 742 f2fs_handle_failed_inode(inode); 743 out_free_encrypted_link: 744 if (disk_link.name != (unsigned char *)symname) 745 kfree(disk_link.name); 746 return err; 747 } 748 749 static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir, 750 struct dentry *dentry, umode_t mode) 751 { 752 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 753 struct inode *inode; 754 int err; 755 756 if (unlikely(f2fs_cp_error(sbi))) 757 return -EIO; 758 759 err = f2fs_dquot_initialize(dir); 760 if (err) 761 return err; 762 763 inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode); 764 if (IS_ERR(inode)) 765 return PTR_ERR(inode); 766 767 inode->i_op = &f2fs_dir_inode_operations; 768 inode->i_fop = &f2fs_dir_operations; 769 inode->i_mapping->a_ops = &f2fs_dblock_aops; 770 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 771 772 set_inode_flag(inode, FI_INC_LINK); 773 f2fs_lock_op(sbi); 774 err = f2fs_add_link(dentry, inode); 775 if (err) 776 goto out_fail; 777 f2fs_unlock_op(sbi); 778 779 f2fs_alloc_nid_done(sbi, inode->i_ino); 780 781 d_instantiate_new(dentry, inode); 782 783 if (IS_DIRSYNC(dir)) 784 f2fs_sync_fs(sbi->sb, 1); 785 786 f2fs_balance_fs(sbi, true); 787 return 0; 788 789 out_fail: 790 clear_inode_flag(inode, FI_INC_LINK); 791 f2fs_handle_failed_inode(inode); 792 return err; 793 } 794 795 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) 796 { 797 struct inode *inode = d_inode(dentry); 798 799 if (f2fs_empty_dir(inode)) 800 return f2fs_unlink(dir, dentry); 801 return -ENOTEMPTY; 802 } 803 804 static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir, 805 struct dentry *dentry, umode_t mode, dev_t rdev) 806 { 807 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 808 struct inode *inode; 809 int err = 0; 810 811 if (unlikely(f2fs_cp_error(sbi))) 812 return -EIO; 813 if (!f2fs_is_checkpoint_ready(sbi)) 814 return -ENOSPC; 815 816 err = f2fs_dquot_initialize(dir); 817 if (err) 818 return err; 819 820 inode = f2fs_new_inode(mnt_userns, dir, mode); 821 if (IS_ERR(inode)) 822 return PTR_ERR(inode); 823 824 init_special_inode(inode, inode->i_mode, rdev); 825 inode->i_op = &f2fs_special_inode_operations; 826 827 f2fs_lock_op(sbi); 828 err = f2fs_add_link(dentry, inode); 829 if (err) 830 goto out; 831 f2fs_unlock_op(sbi); 832 833 f2fs_alloc_nid_done(sbi, inode->i_ino); 834 835 d_instantiate_new(dentry, inode); 836 837 if (IS_DIRSYNC(dir)) 838 f2fs_sync_fs(sbi->sb, 1); 839 840 f2fs_balance_fs(sbi, true); 841 return 0; 842 out: 843 f2fs_handle_failed_inode(inode); 844 return err; 845 } 846 847 static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir, 848 struct file *file, umode_t mode, bool is_whiteout, 849 struct inode **new_inode) 850 { 851 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 852 struct inode *inode; 853 int err; 854 855 err = f2fs_dquot_initialize(dir); 856 if (err) 857 return err; 858 859 inode = f2fs_new_inode(mnt_userns, dir, mode); 860 if (IS_ERR(inode)) 861 return PTR_ERR(inode); 862 863 if (is_whiteout) { 864 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); 865 inode->i_op = &f2fs_special_inode_operations; 866 } else { 867 inode->i_op = &f2fs_file_inode_operations; 868 inode->i_fop = &f2fs_file_operations; 869 inode->i_mapping->a_ops = &f2fs_dblock_aops; 870 } 871 872 f2fs_lock_op(sbi); 873 err = f2fs_acquire_orphan_inode(sbi); 874 if (err) 875 goto out; 876 877 err = f2fs_do_tmpfile(inode, dir); 878 if (err) 879 goto release_out; 880 881 /* 882 * add this non-linked tmpfile to orphan list, in this way we could 883 * remove all unused data of tmpfile after abnormal power-off. 884 */ 885 f2fs_add_orphan_inode(inode); 886 f2fs_alloc_nid_done(sbi, inode->i_ino); 887 888 if (is_whiteout) { 889 f2fs_i_links_write(inode, false); 890 891 spin_lock(&inode->i_lock); 892 inode->i_state |= I_LINKABLE; 893 spin_unlock(&inode->i_lock); 894 } else { 895 if (file) 896 d_tmpfile(file, inode); 897 else 898 f2fs_i_links_write(inode, false); 899 } 900 /* link_count was changed by d_tmpfile as well. */ 901 f2fs_unlock_op(sbi); 902 unlock_new_inode(inode); 903 904 if (new_inode) 905 *new_inode = inode; 906 907 f2fs_balance_fs(sbi, true); 908 return 0; 909 910 release_out: 911 f2fs_release_orphan_inode(sbi); 912 out: 913 f2fs_handle_failed_inode(inode); 914 return err; 915 } 916 917 static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir, 918 struct file *file, umode_t mode) 919 { 920 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 921 int err; 922 923 if (unlikely(f2fs_cp_error(sbi))) 924 return -EIO; 925 if (!f2fs_is_checkpoint_ready(sbi)) 926 return -ENOSPC; 927 928 err = __f2fs_tmpfile(mnt_userns, dir, file, mode, false, NULL); 929 930 return finish_open_simple(file, err); 931 } 932 933 static int f2fs_create_whiteout(struct user_namespace *mnt_userns, 934 struct inode *dir, struct inode **whiteout) 935 { 936 if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) 937 return -EIO; 938 939 return __f2fs_tmpfile(mnt_userns, dir, NULL, 940 S_IFCHR | WHITEOUT_MODE, true, whiteout); 941 } 942 943 int f2fs_get_tmpfile(struct user_namespace *mnt_userns, struct inode *dir, 944 struct inode **new_inode) 945 { 946 return __f2fs_tmpfile(mnt_userns, dir, NULL, S_IFREG, false, new_inode); 947 } 948 949 static int f2fs_rename(struct user_namespace *mnt_userns, struct inode *old_dir, 950 struct dentry *old_dentry, struct inode *new_dir, 951 struct dentry *new_dentry, unsigned int flags) 952 { 953 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); 954 struct inode *old_inode = d_inode(old_dentry); 955 struct inode *new_inode = d_inode(new_dentry); 956 struct inode *whiteout = NULL; 957 struct page *old_dir_page = NULL; 958 struct page *old_page, *new_page = NULL; 959 struct f2fs_dir_entry *old_dir_entry = NULL; 960 struct f2fs_dir_entry *old_entry; 961 struct f2fs_dir_entry *new_entry; 962 int err; 963 964 if (unlikely(f2fs_cp_error(sbi))) 965 return -EIO; 966 if (!f2fs_is_checkpoint_ready(sbi)) 967 return -ENOSPC; 968 969 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 970 (!projid_eq(F2FS_I(new_dir)->i_projid, 971 F2FS_I(old_dentry->d_inode)->i_projid))) 972 return -EXDEV; 973 974 /* 975 * If new_inode is null, the below renaming flow will 976 * add a link in old_dir which can conver inline_dir. 977 * After then, if we failed to get the entry due to other 978 * reasons like ENOMEM, we had to remove the new entry. 979 * Instead of adding such the error handling routine, let's 980 * simply convert first here. 981 */ 982 if (old_dir == new_dir && !new_inode) { 983 err = f2fs_try_convert_inline_dir(old_dir, new_dentry); 984 if (err) 985 return err; 986 } 987 988 if (flags & RENAME_WHITEOUT) { 989 err = f2fs_create_whiteout(mnt_userns, old_dir, &whiteout); 990 if (err) 991 return err; 992 } 993 994 err = f2fs_dquot_initialize(old_dir); 995 if (err) 996 goto out; 997 998 err = f2fs_dquot_initialize(new_dir); 999 if (err) 1000 goto out; 1001 1002 if (new_inode) { 1003 err = f2fs_dquot_initialize(new_inode); 1004 if (err) 1005 goto out; 1006 } 1007 1008 err = -ENOENT; 1009 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); 1010 if (!old_entry) { 1011 if (IS_ERR(old_page)) 1012 err = PTR_ERR(old_page); 1013 goto out; 1014 } 1015 1016 if (S_ISDIR(old_inode->i_mode)) { 1017 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); 1018 if (!old_dir_entry) { 1019 if (IS_ERR(old_dir_page)) 1020 err = PTR_ERR(old_dir_page); 1021 goto out_old; 1022 } 1023 } 1024 1025 if (new_inode) { 1026 1027 err = -ENOTEMPTY; 1028 if (old_dir_entry && !f2fs_empty_dir(new_inode)) 1029 goto out_dir; 1030 1031 err = -ENOENT; 1032 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, 1033 &new_page); 1034 if (!new_entry) { 1035 if (IS_ERR(new_page)) 1036 err = PTR_ERR(new_page); 1037 goto out_dir; 1038 } 1039 1040 f2fs_balance_fs(sbi, true); 1041 1042 f2fs_lock_op(sbi); 1043 1044 err = f2fs_acquire_orphan_inode(sbi); 1045 if (err) 1046 goto put_out_dir; 1047 1048 f2fs_set_link(new_dir, new_entry, new_page, old_inode); 1049 new_page = NULL; 1050 1051 new_inode->i_ctime = current_time(new_inode); 1052 f2fs_down_write(&F2FS_I(new_inode)->i_sem); 1053 if (old_dir_entry) 1054 f2fs_i_links_write(new_inode, false); 1055 f2fs_i_links_write(new_inode, false); 1056 f2fs_up_write(&F2FS_I(new_inode)->i_sem); 1057 1058 if (!new_inode->i_nlink) 1059 f2fs_add_orphan_inode(new_inode); 1060 else 1061 f2fs_release_orphan_inode(sbi); 1062 } else { 1063 f2fs_balance_fs(sbi, true); 1064 1065 f2fs_lock_op(sbi); 1066 1067 err = f2fs_add_link(new_dentry, old_inode); 1068 if (err) { 1069 f2fs_unlock_op(sbi); 1070 goto out_dir; 1071 } 1072 1073 if (old_dir_entry) 1074 f2fs_i_links_write(new_dir, true); 1075 } 1076 1077 f2fs_down_write(&F2FS_I(old_inode)->i_sem); 1078 if (!old_dir_entry || whiteout) 1079 file_lost_pino(old_inode); 1080 else 1081 /* adjust dir's i_pino to pass fsck check */ 1082 f2fs_i_pino_write(old_inode, new_dir->i_ino); 1083 f2fs_up_write(&F2FS_I(old_inode)->i_sem); 1084 1085 old_inode->i_ctime = current_time(old_inode); 1086 f2fs_mark_inode_dirty_sync(old_inode, false); 1087 1088 f2fs_delete_entry(old_entry, old_page, old_dir, NULL); 1089 old_page = NULL; 1090 1091 if (whiteout) { 1092 set_inode_flag(whiteout, FI_INC_LINK); 1093 err = f2fs_add_link(old_dentry, whiteout); 1094 if (err) 1095 goto put_out_dir; 1096 1097 spin_lock(&whiteout->i_lock); 1098 whiteout->i_state &= ~I_LINKABLE; 1099 spin_unlock(&whiteout->i_lock); 1100 1101 iput(whiteout); 1102 } 1103 1104 if (old_dir_entry) { 1105 if (old_dir != new_dir && !whiteout) 1106 f2fs_set_link(old_inode, old_dir_entry, 1107 old_dir_page, new_dir); 1108 else 1109 f2fs_put_page(old_dir_page, 0); 1110 f2fs_i_links_write(old_dir, false); 1111 } 1112 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { 1113 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); 1114 if (S_ISDIR(old_inode->i_mode)) 1115 f2fs_add_ino_entry(sbi, old_inode->i_ino, 1116 TRANS_DIR_INO); 1117 } 1118 1119 f2fs_unlock_op(sbi); 1120 1121 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) 1122 f2fs_sync_fs(sbi->sb, 1); 1123 1124 f2fs_update_time(sbi, REQ_TIME); 1125 return 0; 1126 1127 put_out_dir: 1128 f2fs_unlock_op(sbi); 1129 f2fs_put_page(new_page, 0); 1130 out_dir: 1131 if (old_dir_entry) 1132 f2fs_put_page(old_dir_page, 0); 1133 out_old: 1134 f2fs_put_page(old_page, 0); 1135 out: 1136 iput(whiteout); 1137 return err; 1138 } 1139 1140 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, 1141 struct inode *new_dir, struct dentry *new_dentry) 1142 { 1143 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); 1144 struct inode *old_inode = d_inode(old_dentry); 1145 struct inode *new_inode = d_inode(new_dentry); 1146 struct page *old_dir_page, *new_dir_page; 1147 struct page *old_page, *new_page; 1148 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; 1149 struct f2fs_dir_entry *old_entry, *new_entry; 1150 int old_nlink = 0, new_nlink = 0; 1151 int err; 1152 1153 if (unlikely(f2fs_cp_error(sbi))) 1154 return -EIO; 1155 if (!f2fs_is_checkpoint_ready(sbi)) 1156 return -ENOSPC; 1157 1158 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 1159 !projid_eq(F2FS_I(new_dir)->i_projid, 1160 F2FS_I(old_dentry->d_inode)->i_projid)) || 1161 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && 1162 !projid_eq(F2FS_I(old_dir)->i_projid, 1163 F2FS_I(new_dentry->d_inode)->i_projid))) 1164 return -EXDEV; 1165 1166 err = f2fs_dquot_initialize(old_dir); 1167 if (err) 1168 goto out; 1169 1170 err = f2fs_dquot_initialize(new_dir); 1171 if (err) 1172 goto out; 1173 1174 err = -ENOENT; 1175 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); 1176 if (!old_entry) { 1177 if (IS_ERR(old_page)) 1178 err = PTR_ERR(old_page); 1179 goto out; 1180 } 1181 1182 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); 1183 if (!new_entry) { 1184 if (IS_ERR(new_page)) 1185 err = PTR_ERR(new_page); 1186 goto out_old; 1187 } 1188 1189 /* prepare for updating ".." directory entry info later */ 1190 if (old_dir != new_dir) { 1191 if (S_ISDIR(old_inode->i_mode)) { 1192 old_dir_entry = f2fs_parent_dir(old_inode, 1193 &old_dir_page); 1194 if (!old_dir_entry) { 1195 if (IS_ERR(old_dir_page)) 1196 err = PTR_ERR(old_dir_page); 1197 goto out_new; 1198 } 1199 } 1200 1201 if (S_ISDIR(new_inode->i_mode)) { 1202 new_dir_entry = f2fs_parent_dir(new_inode, 1203 &new_dir_page); 1204 if (!new_dir_entry) { 1205 if (IS_ERR(new_dir_page)) 1206 err = PTR_ERR(new_dir_page); 1207 goto out_old_dir; 1208 } 1209 } 1210 } 1211 1212 /* 1213 * If cross rename between file and directory those are not 1214 * in the same directory, we will inc nlink of file's parent 1215 * later, so we should check upper boundary of its nlink. 1216 */ 1217 if ((!old_dir_entry || !new_dir_entry) && 1218 old_dir_entry != new_dir_entry) { 1219 old_nlink = old_dir_entry ? -1 : 1; 1220 new_nlink = -old_nlink; 1221 err = -EMLINK; 1222 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || 1223 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) 1224 goto out_new_dir; 1225 } 1226 1227 f2fs_balance_fs(sbi, true); 1228 1229 f2fs_lock_op(sbi); 1230 1231 /* update ".." directory entry info of old dentry */ 1232 if (old_dir_entry) 1233 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); 1234 1235 /* update ".." directory entry info of new dentry */ 1236 if (new_dir_entry) 1237 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); 1238 1239 /* update directory entry info of old dir inode */ 1240 f2fs_set_link(old_dir, old_entry, old_page, new_inode); 1241 1242 f2fs_down_write(&F2FS_I(old_inode)->i_sem); 1243 if (!old_dir_entry) 1244 file_lost_pino(old_inode); 1245 else 1246 /* adjust dir's i_pino to pass fsck check */ 1247 f2fs_i_pino_write(old_inode, new_dir->i_ino); 1248 f2fs_up_write(&F2FS_I(old_inode)->i_sem); 1249 1250 old_dir->i_ctime = current_time(old_dir); 1251 if (old_nlink) { 1252 f2fs_down_write(&F2FS_I(old_dir)->i_sem); 1253 f2fs_i_links_write(old_dir, old_nlink > 0); 1254 f2fs_up_write(&F2FS_I(old_dir)->i_sem); 1255 } 1256 f2fs_mark_inode_dirty_sync(old_dir, false); 1257 1258 /* update directory entry info of new dir inode */ 1259 f2fs_set_link(new_dir, new_entry, new_page, old_inode); 1260 1261 f2fs_down_write(&F2FS_I(new_inode)->i_sem); 1262 if (!new_dir_entry) 1263 file_lost_pino(new_inode); 1264 else 1265 /* adjust dir's i_pino to pass fsck check */ 1266 f2fs_i_pino_write(new_inode, old_dir->i_ino); 1267 f2fs_up_write(&F2FS_I(new_inode)->i_sem); 1268 1269 new_dir->i_ctime = current_time(new_dir); 1270 if (new_nlink) { 1271 f2fs_down_write(&F2FS_I(new_dir)->i_sem); 1272 f2fs_i_links_write(new_dir, new_nlink > 0); 1273 f2fs_up_write(&F2FS_I(new_dir)->i_sem); 1274 } 1275 f2fs_mark_inode_dirty_sync(new_dir, false); 1276 1277 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { 1278 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); 1279 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); 1280 } 1281 1282 f2fs_unlock_op(sbi); 1283 1284 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) 1285 f2fs_sync_fs(sbi->sb, 1); 1286 1287 f2fs_update_time(sbi, REQ_TIME); 1288 return 0; 1289 out_new_dir: 1290 if (new_dir_entry) { 1291 f2fs_put_page(new_dir_page, 0); 1292 } 1293 out_old_dir: 1294 if (old_dir_entry) { 1295 f2fs_put_page(old_dir_page, 0); 1296 } 1297 out_new: 1298 f2fs_put_page(new_page, 0); 1299 out_old: 1300 f2fs_put_page(old_page, 0); 1301 out: 1302 return err; 1303 } 1304 1305 static int f2fs_rename2(struct user_namespace *mnt_userns, 1306 struct inode *old_dir, struct dentry *old_dentry, 1307 struct inode *new_dir, struct dentry *new_dentry, 1308 unsigned int flags) 1309 { 1310 int err; 1311 1312 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) 1313 return -EINVAL; 1314 1315 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, 1316 flags); 1317 if (err) 1318 return err; 1319 1320 if (flags & RENAME_EXCHANGE) { 1321 return f2fs_cross_rename(old_dir, old_dentry, 1322 new_dir, new_dentry); 1323 } 1324 /* 1325 * VFS has already handled the new dentry existence case, 1326 * here, we just deal with "RENAME_NOREPLACE" as regular rename. 1327 */ 1328 return f2fs_rename(mnt_userns, old_dir, old_dentry, 1329 new_dir, new_dentry, flags); 1330 } 1331 1332 static const char *f2fs_encrypted_get_link(struct dentry *dentry, 1333 struct inode *inode, 1334 struct delayed_call *done) 1335 { 1336 struct page *page; 1337 const char *target; 1338 1339 if (!dentry) 1340 return ERR_PTR(-ECHILD); 1341 1342 page = read_mapping_page(inode->i_mapping, 0, NULL); 1343 if (IS_ERR(page)) 1344 return ERR_CAST(page); 1345 1346 target = fscrypt_get_symlink(inode, page_address(page), 1347 inode->i_sb->s_blocksize, done); 1348 put_page(page); 1349 return target; 1350 } 1351 1352 static int f2fs_encrypted_symlink_getattr(struct user_namespace *mnt_userns, 1353 const struct path *path, 1354 struct kstat *stat, u32 request_mask, 1355 unsigned int query_flags) 1356 { 1357 f2fs_getattr(mnt_userns, path, stat, request_mask, query_flags); 1358 1359 return fscrypt_symlink_getattr(path, stat); 1360 } 1361 1362 const struct inode_operations f2fs_encrypted_symlink_inode_operations = { 1363 .get_link = f2fs_encrypted_get_link, 1364 .getattr = f2fs_encrypted_symlink_getattr, 1365 .setattr = f2fs_setattr, 1366 .listxattr = f2fs_listxattr, 1367 }; 1368 1369 const struct inode_operations f2fs_dir_inode_operations = { 1370 .create = f2fs_create, 1371 .lookup = f2fs_lookup, 1372 .link = f2fs_link, 1373 .unlink = f2fs_unlink, 1374 .symlink = f2fs_symlink, 1375 .mkdir = f2fs_mkdir, 1376 .rmdir = f2fs_rmdir, 1377 .mknod = f2fs_mknod, 1378 .rename = f2fs_rename2, 1379 .tmpfile = f2fs_tmpfile, 1380 .getattr = f2fs_getattr, 1381 .setattr = f2fs_setattr, 1382 .get_acl = f2fs_get_acl, 1383 .set_acl = f2fs_set_acl, 1384 .listxattr = f2fs_listxattr, 1385 .fiemap = f2fs_fiemap, 1386 .fileattr_get = f2fs_fileattr_get, 1387 .fileattr_set = f2fs_fileattr_set, 1388 }; 1389 1390 const struct inode_operations f2fs_symlink_inode_operations = { 1391 .get_link = f2fs_get_link, 1392 .getattr = f2fs_getattr, 1393 .setattr = f2fs_setattr, 1394 .listxattr = f2fs_listxattr, 1395 }; 1396 1397 const struct inode_operations f2fs_special_inode_operations = { 1398 .getattr = f2fs_getattr, 1399 .setattr = f2fs_setattr, 1400 .get_acl = f2fs_get_acl, 1401 .set_acl = f2fs_set_acl, 1402 .listxattr = f2fs_listxattr, 1403 }; 1404