1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/inode.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/writeback.h> 11 #include <linux/sched/mm.h> 12 #include <linux/lz4.h> 13 #include <linux/zstd.h> 14 15 #include "f2fs.h" 16 #include "node.h" 17 #include "segment.h" 18 #include "xattr.h" 19 20 #include <trace/events/f2fs.h> 21 22 #ifdef CONFIG_F2FS_FS_COMPRESSION 23 extern const struct address_space_operations f2fs_compress_aops; 24 #endif 25 26 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync) 27 { 28 if (is_inode_flag_set(inode, FI_NEW_INODE)) 29 return; 30 31 if (f2fs_readonly(F2FS_I_SB(inode)->sb)) 32 return; 33 34 if (f2fs_inode_dirtied(inode, sync)) 35 return; 36 37 if (f2fs_is_atomic_file(inode)) { 38 set_inode_flag(inode, FI_ATOMIC_DIRTIED); 39 return; 40 } 41 42 mark_inode_dirty_sync(inode); 43 } 44 45 void f2fs_set_inode_flags(struct inode *inode) 46 { 47 unsigned int flags = F2FS_I(inode)->i_flags; 48 unsigned int new_fl = 0; 49 50 if (flags & F2FS_SYNC_FL) 51 new_fl |= S_SYNC; 52 if (flags & F2FS_APPEND_FL) 53 new_fl |= S_APPEND; 54 if (flags & F2FS_IMMUTABLE_FL) 55 new_fl |= S_IMMUTABLE; 56 if (flags & F2FS_NOATIME_FL) 57 new_fl |= S_NOATIME; 58 if (flags & F2FS_DIRSYNC_FL) 59 new_fl |= S_DIRSYNC; 60 if (file_is_encrypt(inode)) 61 new_fl |= S_ENCRYPTED; 62 if (file_is_verity(inode)) 63 new_fl |= S_VERITY; 64 if (flags & F2FS_CASEFOLD_FL) 65 new_fl |= S_CASEFOLD; 66 inode_set_flags(inode, new_fl, 67 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC| 68 S_ENCRYPTED|S_VERITY|S_CASEFOLD); 69 } 70 71 static void __get_inode_rdev(struct inode *inode, struct page *node_page) 72 { 73 __le32 *addr = get_dnode_addr(inode, node_page); 74 75 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 76 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 77 if (addr[0]) 78 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0])); 79 else 80 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1])); 81 } 82 } 83 84 static void __set_inode_rdev(struct inode *inode, struct page *node_page) 85 { 86 __le32 *addr = get_dnode_addr(inode, node_page); 87 88 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 89 if (old_valid_dev(inode->i_rdev)) { 90 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev)); 91 addr[1] = 0; 92 } else { 93 addr[0] = 0; 94 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev)); 95 addr[2] = 0; 96 } 97 } 98 } 99 100 static void __recover_inline_status(struct inode *inode, struct page *ipage) 101 { 102 void *inline_data = inline_data_addr(inode, ipage); 103 __le32 *start = inline_data; 104 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 105 106 while (start < end) { 107 if (*start++) { 108 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 109 110 set_inode_flag(inode, FI_DATA_EXIST); 111 set_raw_inline(inode, F2FS_INODE(ipage)); 112 set_page_dirty(ipage); 113 return; 114 } 115 } 116 return; 117 } 118 119 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 120 { 121 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 122 123 if (!f2fs_sb_has_inode_chksum(sbi)) 124 return false; 125 126 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 127 return false; 128 129 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), 130 i_inode_checksum)) 131 return false; 132 133 return true; 134 } 135 136 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 137 { 138 struct f2fs_node *node = F2FS_NODE(page); 139 struct f2fs_inode *ri = &node->i; 140 __le32 ino = node->footer.ino; 141 __le32 gen = ri->i_generation; 142 __u32 chksum, chksum_seed; 143 __u32 dummy_cs = 0; 144 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 145 unsigned int cs_size = sizeof(dummy_cs); 146 147 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 148 sizeof(ino)); 149 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 150 151 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 152 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 153 offset += cs_size; 154 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 155 F2FS_BLKSIZE - offset); 156 return chksum; 157 } 158 159 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 160 { 161 struct f2fs_inode *ri; 162 __u32 provided, calculated; 163 164 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) 165 return true; 166 167 #ifdef CONFIG_F2FS_CHECK_FS 168 if (!f2fs_enable_inode_chksum(sbi, page)) 169 #else 170 if (!f2fs_enable_inode_chksum(sbi, page) || 171 PageDirty(page) || 172 folio_test_writeback(page_folio(page))) 173 #endif 174 return true; 175 176 ri = &F2FS_NODE(page)->i; 177 provided = le32_to_cpu(ri->i_inode_checksum); 178 calculated = f2fs_inode_chksum(sbi, page); 179 180 if (provided != calculated) 181 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", 182 page_folio(page)->index, ino_of_node(page), 183 provided, calculated); 184 185 return provided == calculated; 186 } 187 188 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 189 { 190 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 191 192 if (!f2fs_enable_inode_chksum(sbi, page)) 193 return; 194 195 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 196 } 197 198 static bool sanity_check_compress_inode(struct inode *inode, 199 struct f2fs_inode *ri) 200 { 201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 202 unsigned char clevel; 203 204 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 205 f2fs_warn(sbi, 206 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix", 207 __func__, inode->i_ino, ri->i_compress_algorithm); 208 return false; 209 } 210 if (le64_to_cpu(ri->i_compr_blocks) > 211 SECTOR_TO_BLOCK(inode->i_blocks)) { 212 f2fs_warn(sbi, 213 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 214 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks), 215 SECTOR_TO_BLOCK(inode->i_blocks)); 216 return false; 217 } 218 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 219 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 220 f2fs_warn(sbi, 221 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix", 222 __func__, inode->i_ino, ri->i_log_cluster_size); 223 return false; 224 } 225 226 clevel = le16_to_cpu(ri->i_compress_flag) >> 227 COMPRESS_LEVEL_OFFSET; 228 switch (ri->i_compress_algorithm) { 229 case COMPRESS_LZO: 230 #ifdef CONFIG_F2FS_FS_LZO 231 if (clevel) 232 goto err_level; 233 #endif 234 break; 235 case COMPRESS_LZORLE: 236 #ifdef CONFIG_F2FS_FS_LZORLE 237 if (clevel) 238 goto err_level; 239 #endif 240 break; 241 case COMPRESS_LZ4: 242 #ifdef CONFIG_F2FS_FS_LZ4 243 #ifdef CONFIG_F2FS_FS_LZ4HC 244 if (clevel && 245 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL)) 246 goto err_level; 247 #else 248 if (clevel) 249 goto err_level; 250 #endif 251 #endif 252 break; 253 case COMPRESS_ZSTD: 254 #ifdef CONFIG_F2FS_FS_ZSTD 255 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel()) 256 goto err_level; 257 #endif 258 break; 259 default: 260 goto err_level; 261 } 262 263 return true; 264 err_level: 265 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix", 266 __func__, inode->i_ino, clevel); 267 return false; 268 } 269 270 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 271 { 272 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 273 struct f2fs_inode_info *fi = F2FS_I(inode); 274 struct f2fs_inode *ri = F2FS_INODE(node_page); 275 unsigned long long iblocks; 276 277 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 278 if (!iblocks) { 279 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 280 __func__, inode->i_ino, iblocks); 281 return false; 282 } 283 284 if (ino_of_node(node_page) != nid_of_node(node_page)) { 285 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 286 __func__, inode->i_ino, 287 ino_of_node(node_page), nid_of_node(node_page)); 288 return false; 289 } 290 291 if (f2fs_has_extra_attr(inode)) { 292 if (!f2fs_sb_has_extra_attr(sbi)) { 293 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 294 __func__, inode->i_ino); 295 return false; 296 } 297 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 298 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || 299 fi->i_extra_isize % sizeof(__le32)) { 300 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 301 __func__, inode->i_ino, fi->i_extra_isize, 302 F2FS_TOTAL_EXTRA_ATTR_SIZE); 303 return false; 304 } 305 if (f2fs_sb_has_compression(sbi) && 306 fi->i_flags & F2FS_COMPR_FL && 307 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 308 i_compress_flag)) { 309 if (!sanity_check_compress_inode(inode, ri)) 310 return false; 311 } 312 } 313 314 if (f2fs_sb_has_flexible_inline_xattr(sbi) && 315 f2fs_has_inline_xattr(inode) && 316 (fi->i_inline_xattr_size < MIN_INLINE_XATTR_SIZE || 317 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 318 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, min: %zu, max: %lu", 319 __func__, inode->i_ino, fi->i_inline_xattr_size, 320 MIN_INLINE_XATTR_SIZE, MAX_INLINE_XATTR_SIZE); 321 return false; 322 } 323 324 if (!f2fs_sb_has_extra_attr(sbi)) { 325 if (f2fs_sb_has_project_quota(sbi)) { 326 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 327 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA); 328 return false; 329 } 330 if (f2fs_sb_has_inode_chksum(sbi)) { 331 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 332 __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM); 333 return false; 334 } 335 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 336 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 337 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); 338 return false; 339 } 340 if (f2fs_sb_has_inode_crtime(sbi)) { 341 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 342 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); 343 return false; 344 } 345 if (f2fs_sb_has_compression(sbi)) { 346 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 347 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); 348 return false; 349 } 350 } 351 352 if (f2fs_sanity_check_inline_data(inode, node_page)) { 353 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 354 __func__, inode->i_ino, inode->i_mode); 355 return false; 356 } 357 358 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 359 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 360 __func__, inode->i_ino, inode->i_mode); 361 return false; 362 } 363 364 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 365 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 366 __func__, inode->i_ino); 367 return false; 368 } 369 370 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) { 371 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.", 372 __func__, inode->i_ino, fi->i_xattr_nid); 373 return false; 374 } 375 376 if (IS_DEVICE_ALIASING(inode)) { 377 if (!f2fs_sb_has_device_alias(sbi)) { 378 f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but the feature is off", 379 __func__, inode->i_ino); 380 return false; 381 } 382 if (!f2fs_is_pinned_file(inode)) { 383 f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but is not pinned", 384 __func__, inode->i_ino); 385 return false; 386 } 387 } 388 389 return true; 390 } 391 392 static void init_idisk_time(struct inode *inode) 393 { 394 struct f2fs_inode_info *fi = F2FS_I(inode); 395 396 fi->i_disk_time[0] = inode_get_atime(inode); 397 fi->i_disk_time[1] = inode_get_ctime(inode); 398 fi->i_disk_time[2] = inode_get_mtime(inode); 399 } 400 401 static int do_read_inode(struct inode *inode) 402 { 403 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 404 struct f2fs_inode_info *fi = F2FS_I(inode); 405 struct page *node_page; 406 struct f2fs_inode *ri; 407 projid_t i_projid; 408 409 /* Check if ino is within scope */ 410 if (f2fs_check_nid_range(sbi, inode->i_ino)) 411 return -EINVAL; 412 413 node_page = f2fs_get_node_page(sbi, inode->i_ino); 414 if (IS_ERR(node_page)) 415 return PTR_ERR(node_page); 416 417 ri = F2FS_INODE(node_page); 418 419 inode->i_mode = le16_to_cpu(ri->i_mode); 420 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 421 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 422 set_nlink(inode, le32_to_cpu(ri->i_links)); 423 inode->i_size = le64_to_cpu(ri->i_size); 424 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 425 426 inode_set_atime(inode, le64_to_cpu(ri->i_atime), 427 le32_to_cpu(ri->i_atime_nsec)); 428 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime), 429 le32_to_cpu(ri->i_ctime_nsec)); 430 inode_set_mtime(inode, le64_to_cpu(ri->i_mtime), 431 le32_to_cpu(ri->i_mtime_nsec)); 432 inode->i_generation = le32_to_cpu(ri->i_generation); 433 if (S_ISDIR(inode->i_mode)) 434 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 435 else if (S_ISREG(inode->i_mode)) 436 fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures); 437 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 438 fi->i_flags = le32_to_cpu(ri->i_flags); 439 if (S_ISREG(inode->i_mode)) 440 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 441 bitmap_zero(fi->flags, FI_MAX); 442 fi->i_advise = ri->i_advise; 443 fi->i_pino = le32_to_cpu(ri->i_pino); 444 fi->i_dir_level = ri->i_dir_level; 445 446 get_inline_info(inode, ri); 447 448 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 449 le16_to_cpu(ri->i_extra_isize) : 0; 450 451 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 452 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 453 } else if (f2fs_has_inline_xattr(inode) || 454 f2fs_has_inline_dentry(inode)) { 455 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 456 } else { 457 458 /* 459 * Previous inline data or directory always reserved 200 bytes 460 * in inode layout, even if inline_xattr is disabled. In order 461 * to keep inline_dentry's structure for backward compatibility, 462 * we get the space back only from inline_data. 463 */ 464 fi->i_inline_xattr_size = 0; 465 } 466 467 if (!sanity_check_inode(inode, node_page)) { 468 f2fs_put_page(node_page, 1); 469 set_sbi_flag(sbi, SBI_NEED_FSCK); 470 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 471 return -EFSCORRUPTED; 472 } 473 474 /* check data exist */ 475 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 476 __recover_inline_status(inode, node_page); 477 478 /* try to recover cold bit for non-dir inode */ 479 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 480 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 481 set_cold_node(node_page, false); 482 set_page_dirty(node_page); 483 } 484 485 /* get rdev by using inline_info */ 486 __get_inode_rdev(inode, node_page); 487 488 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 489 fi->last_disk_size = inode->i_size; 490 491 if (fi->i_flags & F2FS_PROJINHERIT_FL) 492 set_inode_flag(inode, FI_PROJ_INHERIT); 493 494 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 495 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 496 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 497 else 498 i_projid = F2FS_DEF_PROJID; 499 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 500 501 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 502 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 503 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 504 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 505 } 506 507 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 508 (fi->i_flags & F2FS_COMPR_FL)) { 509 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 510 i_compress_flag)) { 511 unsigned short compress_flag; 512 513 atomic_set(&fi->i_compr_blocks, 514 le64_to_cpu(ri->i_compr_blocks)); 515 fi->i_compress_algorithm = ri->i_compress_algorithm; 516 fi->i_log_cluster_size = ri->i_log_cluster_size; 517 compress_flag = le16_to_cpu(ri->i_compress_flag); 518 fi->i_compress_level = compress_flag >> 519 COMPRESS_LEVEL_OFFSET; 520 fi->i_compress_flag = compress_flag & 521 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); 522 fi->i_cluster_size = BIT(fi->i_log_cluster_size); 523 set_inode_flag(inode, FI_COMPRESSED_FILE); 524 } 525 } 526 527 init_idisk_time(inode); 528 529 if (!sanity_check_extent_cache(inode, node_page)) { 530 f2fs_put_page(node_page, 1); 531 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 532 return -EFSCORRUPTED; 533 } 534 535 /* Need all the flag bits */ 536 f2fs_init_read_extent_tree(inode, node_page); 537 f2fs_init_age_extent_tree(inode); 538 539 f2fs_put_page(node_page, 1); 540 541 stat_inc_inline_xattr(inode); 542 stat_inc_inline_inode(inode); 543 stat_inc_inline_dir(inode); 544 stat_inc_compr_inode(inode); 545 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 546 547 return 0; 548 } 549 550 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 551 { 552 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 553 ino == F2FS_COMPRESS_INO(sbi); 554 } 555 556 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 557 { 558 struct f2fs_sb_info *sbi = F2FS_SB(sb); 559 struct inode *inode; 560 int ret = 0; 561 562 inode = iget_locked(sb, ino); 563 if (!inode) 564 return ERR_PTR(-ENOMEM); 565 566 if (!(inode->i_state & I_NEW)) { 567 if (is_meta_ino(sbi, ino)) { 568 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 569 set_sbi_flag(sbi, SBI_NEED_FSCK); 570 ret = -EFSCORRUPTED; 571 trace_f2fs_iget_exit(inode, ret); 572 iput(inode); 573 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 574 return ERR_PTR(ret); 575 } 576 577 trace_f2fs_iget(inode); 578 return inode; 579 } 580 581 if (is_meta_ino(sbi, ino)) 582 goto make_now; 583 584 ret = do_read_inode(inode); 585 if (ret) 586 goto bad_inode; 587 make_now: 588 if (ino == F2FS_NODE_INO(sbi)) { 589 inode->i_mapping->a_ops = &f2fs_node_aops; 590 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 591 } else if (ino == F2FS_META_INO(sbi)) { 592 inode->i_mapping->a_ops = &f2fs_meta_aops; 593 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 594 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 595 #ifdef CONFIG_F2FS_FS_COMPRESSION 596 inode->i_mapping->a_ops = &f2fs_compress_aops; 597 /* 598 * generic_error_remove_folio only truncates pages of regular 599 * inode 600 */ 601 inode->i_mode |= S_IFREG; 602 #endif 603 mapping_set_gfp_mask(inode->i_mapping, 604 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 605 } else if (S_ISREG(inode->i_mode)) { 606 inode->i_op = &f2fs_file_inode_operations; 607 inode->i_fop = &f2fs_file_operations; 608 inode->i_mapping->a_ops = &f2fs_dblock_aops; 609 } else if (S_ISDIR(inode->i_mode)) { 610 inode->i_op = &f2fs_dir_inode_operations; 611 inode->i_fop = &f2fs_dir_operations; 612 inode->i_mapping->a_ops = &f2fs_dblock_aops; 613 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 614 } else if (S_ISLNK(inode->i_mode)) { 615 if (file_is_encrypt(inode)) 616 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 617 else 618 inode->i_op = &f2fs_symlink_inode_operations; 619 inode_nohighmem(inode); 620 inode->i_mapping->a_ops = &f2fs_dblock_aops; 621 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 622 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 623 inode->i_op = &f2fs_special_inode_operations; 624 init_special_inode(inode, inode->i_mode, inode->i_rdev); 625 } else { 626 ret = -EIO; 627 goto bad_inode; 628 } 629 f2fs_set_inode_flags(inode); 630 631 unlock_new_inode(inode); 632 trace_f2fs_iget(inode); 633 return inode; 634 635 bad_inode: 636 f2fs_inode_synced(inode); 637 iget_failed(inode); 638 trace_f2fs_iget_exit(inode, ret); 639 return ERR_PTR(ret); 640 } 641 642 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 643 { 644 struct inode *inode; 645 retry: 646 inode = f2fs_iget(sb, ino); 647 if (IS_ERR(inode)) { 648 if (PTR_ERR(inode) == -ENOMEM) { 649 memalloc_retry_wait(GFP_NOFS); 650 goto retry; 651 } 652 } 653 return inode; 654 } 655 656 void f2fs_update_inode(struct inode *inode, struct page *node_page) 657 { 658 struct f2fs_inode_info *fi = F2FS_I(inode); 659 struct f2fs_inode *ri; 660 struct extent_tree *et = fi->extent_tree[EX_READ]; 661 662 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 663 set_page_dirty(node_page); 664 665 f2fs_inode_synced(inode); 666 667 ri = F2FS_INODE(node_page); 668 669 ri->i_mode = cpu_to_le16(inode->i_mode); 670 ri->i_advise = fi->i_advise; 671 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 672 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 673 ri->i_links = cpu_to_le32(inode->i_nlink); 674 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 675 676 if (!f2fs_is_atomic_file(inode) || 677 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) 678 ri->i_size = cpu_to_le64(i_size_read(inode)); 679 680 if (et) { 681 read_lock(&et->lock); 682 set_raw_read_extent(&et->largest, &ri->i_ext); 683 read_unlock(&et->lock); 684 } else { 685 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 686 } 687 set_raw_inline(inode, ri); 688 689 ri->i_atime = cpu_to_le64(inode_get_atime_sec(inode)); 690 ri->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode)); 691 ri->i_mtime = cpu_to_le64(inode_get_mtime_sec(inode)); 692 ri->i_atime_nsec = cpu_to_le32(inode_get_atime_nsec(inode)); 693 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode)); 694 ri->i_mtime_nsec = cpu_to_le32(inode_get_mtime_nsec(inode)); 695 if (S_ISDIR(inode->i_mode)) 696 ri->i_current_depth = cpu_to_le32(fi->i_current_depth); 697 else if (S_ISREG(inode->i_mode)) 698 ri->i_gc_failures = cpu_to_le16(fi->i_gc_failures); 699 ri->i_xattr_nid = cpu_to_le32(fi->i_xattr_nid); 700 ri->i_flags = cpu_to_le32(fi->i_flags); 701 ri->i_pino = cpu_to_le32(fi->i_pino); 702 ri->i_generation = cpu_to_le32(inode->i_generation); 703 ri->i_dir_level = fi->i_dir_level; 704 705 if (f2fs_has_extra_attr(inode)) { 706 ri->i_extra_isize = cpu_to_le16(fi->i_extra_isize); 707 708 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 709 ri->i_inline_xattr_size = 710 cpu_to_le16(fi->i_inline_xattr_size); 711 712 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 713 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) { 714 projid_t i_projid; 715 716 i_projid = from_kprojid(&init_user_ns, fi->i_projid); 717 ri->i_projid = cpu_to_le32(i_projid); 718 } 719 720 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 721 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 722 ri->i_crtime = cpu_to_le64(fi->i_crtime.tv_sec); 723 ri->i_crtime_nsec = cpu_to_le32(fi->i_crtime.tv_nsec); 724 } 725 726 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 727 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 728 i_compress_flag)) { 729 unsigned short compress_flag; 730 731 ri->i_compr_blocks = cpu_to_le64( 732 atomic_read(&fi->i_compr_blocks)); 733 ri->i_compress_algorithm = fi->i_compress_algorithm; 734 compress_flag = fi->i_compress_flag | 735 fi->i_compress_level << 736 COMPRESS_LEVEL_OFFSET; 737 ri->i_compress_flag = cpu_to_le16(compress_flag); 738 ri->i_log_cluster_size = fi->i_log_cluster_size; 739 } 740 } 741 742 __set_inode_rdev(inode, node_page); 743 744 /* deleted inode */ 745 if (inode->i_nlink == 0) 746 clear_page_private_inline(node_page); 747 748 init_idisk_time(inode); 749 #ifdef CONFIG_F2FS_CHECK_FS 750 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 751 #endif 752 } 753 754 void f2fs_update_inode_page(struct inode *inode) 755 { 756 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 757 struct page *node_page; 758 int count = 0; 759 retry: 760 node_page = f2fs_get_node_page(sbi, inode->i_ino); 761 if (IS_ERR(node_page)) { 762 int err = PTR_ERR(node_page); 763 764 /* The node block was truncated. */ 765 if (err == -ENOENT) 766 return; 767 768 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT) 769 goto retry; 770 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE); 771 return; 772 } 773 f2fs_update_inode(inode, node_page); 774 f2fs_put_page(node_page, 1); 775 } 776 777 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 778 { 779 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 780 781 if (inode->i_ino == F2FS_NODE_INO(sbi) || 782 inode->i_ino == F2FS_META_INO(sbi)) 783 return 0; 784 785 /* 786 * atime could be updated without dirtying f2fs inode in lazytime mode 787 */ 788 if (f2fs_is_time_consistent(inode) && 789 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 790 return 0; 791 792 if (!f2fs_is_checkpoint_ready(sbi)) { 793 f2fs_mark_inode_dirty_sync(inode, true); 794 return -ENOSPC; 795 } 796 797 /* 798 * We need to balance fs here to prevent from producing dirty node pages 799 * during the urgent cleaning time when running out of free sections. 800 */ 801 f2fs_update_inode_page(inode); 802 if (wbc && wbc->nr_to_write) 803 f2fs_balance_fs(sbi, true); 804 return 0; 805 } 806 807 /* 808 * Called at the last iput() if i_nlink is zero 809 */ 810 void f2fs_evict_inode(struct inode *inode) 811 { 812 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 813 struct f2fs_inode_info *fi = F2FS_I(inode); 814 nid_t xnid = fi->i_xattr_nid; 815 int err = 0; 816 bool freeze_protected = false; 817 818 f2fs_abort_atomic_write(inode, true); 819 820 if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) { 821 clear_inode_flag(fi->cow_inode, FI_COW_FILE); 822 F2FS_I(fi->cow_inode)->atomic_inode = NULL; 823 iput(fi->cow_inode); 824 fi->cow_inode = NULL; 825 } 826 827 trace_f2fs_evict_inode(inode); 828 truncate_inode_pages_final(&inode->i_data); 829 830 if ((inode->i_nlink || is_bad_inode(inode)) && 831 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 832 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 833 834 if (inode->i_ino == F2FS_NODE_INO(sbi) || 835 inode->i_ino == F2FS_META_INO(sbi) || 836 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 837 goto out_clear; 838 839 f2fs_bug_on(sbi, get_dirty_pages(inode)); 840 f2fs_remove_dirty_inode(inode); 841 842 if (!IS_DEVICE_ALIASING(inode)) 843 f2fs_destroy_extent_tree(inode); 844 845 if (inode->i_nlink || is_bad_inode(inode)) 846 goto no_delete; 847 848 err = f2fs_dquot_initialize(inode); 849 if (err) { 850 err = 0; 851 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 852 } 853 854 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 855 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 856 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 857 858 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) { 859 sb_start_intwrite(inode->i_sb); 860 freeze_protected = true; 861 } 862 set_inode_flag(inode, FI_NO_ALLOC); 863 i_size_write(inode, 0); 864 retry: 865 if (F2FS_HAS_BLOCKS(inode)) 866 err = f2fs_truncate(inode); 867 868 if (time_to_inject(sbi, FAULT_EVICT_INODE)) 869 err = -EIO; 870 871 if (!err) { 872 f2fs_lock_op(sbi); 873 err = f2fs_remove_inode_page(inode); 874 f2fs_unlock_op(sbi); 875 if (err == -ENOENT) { 876 err = 0; 877 878 /* 879 * in fuzzed image, another node may has the same 880 * block address as inode's, if it was truncated 881 * previously, truncation of inode node will fail. 882 */ 883 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 884 f2fs_warn(F2FS_I_SB(inode), 885 "f2fs_evict_inode: inconsistent node id, ino:%lu", 886 inode->i_ino); 887 f2fs_inode_synced(inode); 888 set_sbi_flag(sbi, SBI_NEED_FSCK); 889 } 890 } 891 } 892 893 /* give more chances, if ENOMEM case */ 894 if (err == -ENOMEM) { 895 err = 0; 896 goto retry; 897 } 898 899 if (IS_DEVICE_ALIASING(inode)) 900 f2fs_destroy_extent_tree(inode); 901 902 if (err) { 903 f2fs_update_inode_page(inode); 904 if (dquot_initialize_needed(inode)) 905 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 906 } 907 if (freeze_protected) 908 sb_end_intwrite(inode->i_sb); 909 no_delete: 910 dquot_drop(inode); 911 912 stat_dec_inline_xattr(inode); 913 stat_dec_inline_dir(inode); 914 stat_dec_inline_inode(inode); 915 stat_dec_compr_inode(inode); 916 stat_sub_compr_blocks(inode, 917 atomic_read(&fi->i_compr_blocks)); 918 919 if (likely(!f2fs_cp_error(sbi) && 920 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 921 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 922 else 923 f2fs_inode_synced(inode); 924 925 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 926 if (inode->i_ino) 927 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 928 inode->i_ino); 929 if (xnid) 930 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 931 if (inode->i_nlink) { 932 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 933 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 934 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 935 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 936 } 937 if (is_inode_flag_set(inode, FI_FREE_NID)) { 938 f2fs_alloc_nid_failed(sbi, inode->i_ino); 939 clear_inode_flag(inode, FI_FREE_NID); 940 } else { 941 /* 942 * If xattr nid is corrupted, we can reach out error condition, 943 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 944 * In that case, f2fs_check_nid_range() is enough to give a clue. 945 */ 946 } 947 out_clear: 948 fscrypt_put_encryption_info(inode); 949 fsverity_cleanup_inode(inode); 950 clear_inode(inode); 951 } 952 953 /* caller should call f2fs_lock_op() */ 954 void f2fs_handle_failed_inode(struct inode *inode) 955 { 956 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 957 struct node_info ni; 958 int err; 959 960 /* 961 * clear nlink of inode in order to release resource of inode 962 * immediately. 963 */ 964 clear_nlink(inode); 965 966 /* 967 * we must call this to avoid inode being remained as dirty, resulting 968 * in a panic when flushing dirty inodes in gdirty_list. 969 */ 970 f2fs_update_inode_page(inode); 971 f2fs_inode_synced(inode); 972 973 /* don't make bad inode, since it becomes a regular file. */ 974 unlock_new_inode(inode); 975 976 /* 977 * Note: we should add inode to orphan list before f2fs_unlock_op() 978 * so we can prevent losing this orphan when encoutering checkpoint 979 * and following suddenly power-off. 980 */ 981 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 982 if (err) { 983 set_sbi_flag(sbi, SBI_NEED_FSCK); 984 set_inode_flag(inode, FI_FREE_NID); 985 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 986 goto out; 987 } 988 989 if (ni.blk_addr != NULL_ADDR) { 990 err = f2fs_acquire_orphan_inode(sbi); 991 if (err) { 992 set_sbi_flag(sbi, SBI_NEED_FSCK); 993 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 994 } else { 995 f2fs_add_orphan_inode(inode); 996 } 997 f2fs_alloc_nid_done(sbi, inode->i_ino); 998 } else { 999 set_inode_flag(inode, FI_FREE_NID); 1000 } 1001 1002 out: 1003 f2fs_unlock_op(sbi); 1004 1005 /* iput will drop the inode object */ 1006 iput(inode); 1007 } 1008