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 return; 39 40 mark_inode_dirty_sync(inode); 41 } 42 43 void f2fs_set_inode_flags(struct inode *inode) 44 { 45 unsigned int flags = F2FS_I(inode)->i_flags; 46 unsigned int new_fl = 0; 47 48 if (flags & F2FS_SYNC_FL) 49 new_fl |= S_SYNC; 50 if (flags & F2FS_APPEND_FL) 51 new_fl |= S_APPEND; 52 if (flags & F2FS_IMMUTABLE_FL) 53 new_fl |= S_IMMUTABLE; 54 if (flags & F2FS_NOATIME_FL) 55 new_fl |= S_NOATIME; 56 if (flags & F2FS_DIRSYNC_FL) 57 new_fl |= S_DIRSYNC; 58 if (file_is_encrypt(inode)) 59 new_fl |= S_ENCRYPTED; 60 if (file_is_verity(inode)) 61 new_fl |= S_VERITY; 62 if (flags & F2FS_CASEFOLD_FL) 63 new_fl |= S_CASEFOLD; 64 inode_set_flags(inode, new_fl, 65 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC| 66 S_ENCRYPTED|S_VERITY|S_CASEFOLD); 67 } 68 69 static void __get_inode_rdev(struct inode *inode, struct page *node_page) 70 { 71 __le32 *addr = get_dnode_addr(inode, node_page); 72 73 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 74 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 75 if (addr[0]) 76 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0])); 77 else 78 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1])); 79 } 80 } 81 82 static void __set_inode_rdev(struct inode *inode, struct page *node_page) 83 { 84 __le32 *addr = get_dnode_addr(inode, node_page); 85 86 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 87 if (old_valid_dev(inode->i_rdev)) { 88 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev)); 89 addr[1] = 0; 90 } else { 91 addr[0] = 0; 92 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev)); 93 addr[2] = 0; 94 } 95 } 96 } 97 98 static void __recover_inline_status(struct inode *inode, struct page *ipage) 99 { 100 void *inline_data = inline_data_addr(inode, ipage); 101 __le32 *start = inline_data; 102 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 103 104 while (start < end) { 105 if (*start++) { 106 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 107 108 set_inode_flag(inode, FI_DATA_EXIST); 109 set_raw_inline(inode, F2FS_INODE(ipage)); 110 set_page_dirty(ipage); 111 return; 112 } 113 } 114 return; 115 } 116 117 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 118 { 119 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 120 121 if (!f2fs_sb_has_inode_chksum(sbi)) 122 return false; 123 124 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 125 return false; 126 127 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), 128 i_inode_checksum)) 129 return false; 130 131 return true; 132 } 133 134 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 135 { 136 struct f2fs_node *node = F2FS_NODE(page); 137 struct f2fs_inode *ri = &node->i; 138 __le32 ino = node->footer.ino; 139 __le32 gen = ri->i_generation; 140 __u32 chksum, chksum_seed; 141 __u32 dummy_cs = 0; 142 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 143 unsigned int cs_size = sizeof(dummy_cs); 144 145 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 146 sizeof(ino)); 147 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 148 149 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 150 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 151 offset += cs_size; 152 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 153 F2FS_BLKSIZE - offset); 154 return chksum; 155 } 156 157 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 158 { 159 struct f2fs_inode *ri; 160 __u32 provided, calculated; 161 162 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) 163 return true; 164 165 #ifdef CONFIG_F2FS_CHECK_FS 166 if (!f2fs_enable_inode_chksum(sbi, page)) 167 #else 168 if (!f2fs_enable_inode_chksum(sbi, page) || 169 PageDirty(page) || 170 folio_test_writeback(page_folio(page))) 171 #endif 172 return true; 173 174 ri = &F2FS_NODE(page)->i; 175 provided = le32_to_cpu(ri->i_inode_checksum); 176 calculated = f2fs_inode_chksum(sbi, page); 177 178 if (provided != calculated) 179 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", 180 page_folio(page)->index, ino_of_node(page), 181 provided, calculated); 182 183 return provided == calculated; 184 } 185 186 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 187 { 188 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 189 190 if (!f2fs_enable_inode_chksum(sbi, page)) 191 return; 192 193 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 194 } 195 196 static bool sanity_check_compress_inode(struct inode *inode, 197 struct f2fs_inode *ri) 198 { 199 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 200 unsigned char clevel; 201 202 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 203 f2fs_warn(sbi, 204 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix", 205 __func__, inode->i_ino, ri->i_compress_algorithm); 206 return false; 207 } 208 if (le64_to_cpu(ri->i_compr_blocks) > 209 SECTOR_TO_BLOCK(inode->i_blocks)) { 210 f2fs_warn(sbi, 211 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 212 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks), 213 SECTOR_TO_BLOCK(inode->i_blocks)); 214 return false; 215 } 216 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 217 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 218 f2fs_warn(sbi, 219 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix", 220 __func__, inode->i_ino, ri->i_log_cluster_size); 221 return false; 222 } 223 224 clevel = le16_to_cpu(ri->i_compress_flag) >> 225 COMPRESS_LEVEL_OFFSET; 226 switch (ri->i_compress_algorithm) { 227 case COMPRESS_LZO: 228 #ifdef CONFIG_F2FS_FS_LZO 229 if (clevel) 230 goto err_level; 231 #endif 232 break; 233 case COMPRESS_LZORLE: 234 #ifdef CONFIG_F2FS_FS_LZORLE 235 if (clevel) 236 goto err_level; 237 #endif 238 break; 239 case COMPRESS_LZ4: 240 #ifdef CONFIG_F2FS_FS_LZ4 241 #ifdef CONFIG_F2FS_FS_LZ4HC 242 if (clevel && 243 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL)) 244 goto err_level; 245 #else 246 if (clevel) 247 goto err_level; 248 #endif 249 #endif 250 break; 251 case COMPRESS_ZSTD: 252 #ifdef CONFIG_F2FS_FS_ZSTD 253 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel()) 254 goto err_level; 255 #endif 256 break; 257 default: 258 goto err_level; 259 } 260 261 return true; 262 err_level: 263 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix", 264 __func__, inode->i_ino, clevel); 265 return false; 266 } 267 268 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 269 { 270 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 271 struct f2fs_inode_info *fi = F2FS_I(inode); 272 struct f2fs_inode *ri = F2FS_INODE(node_page); 273 unsigned long long iblocks; 274 275 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 276 if (!iblocks) { 277 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 278 __func__, inode->i_ino, iblocks); 279 return false; 280 } 281 282 if (ino_of_node(node_page) != nid_of_node(node_page)) { 283 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 284 __func__, inode->i_ino, 285 ino_of_node(node_page), nid_of_node(node_page)); 286 return false; 287 } 288 289 if (f2fs_has_extra_attr(inode)) { 290 if (!f2fs_sb_has_extra_attr(sbi)) { 291 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 292 __func__, inode->i_ino); 293 return false; 294 } 295 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 296 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || 297 fi->i_extra_isize % sizeof(__le32)) { 298 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 299 __func__, inode->i_ino, fi->i_extra_isize, 300 F2FS_TOTAL_EXTRA_ATTR_SIZE); 301 return false; 302 } 303 if (f2fs_sb_has_compression(sbi) && 304 fi->i_flags & F2FS_COMPR_FL && 305 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 306 i_compress_flag)) { 307 if (!sanity_check_compress_inode(inode, ri)) 308 return false; 309 } 310 } 311 312 if (f2fs_sb_has_flexible_inline_xattr(sbi) && 313 f2fs_has_inline_xattr(inode) && 314 (fi->i_inline_xattr_size < MIN_INLINE_XATTR_SIZE || 315 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 316 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, min: %zu, max: %lu", 317 __func__, inode->i_ino, fi->i_inline_xattr_size, 318 MIN_INLINE_XATTR_SIZE, MAX_INLINE_XATTR_SIZE); 319 return false; 320 } 321 322 if (!f2fs_sb_has_extra_attr(sbi)) { 323 if (f2fs_sb_has_project_quota(sbi)) { 324 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 325 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA); 326 return false; 327 } 328 if (f2fs_sb_has_inode_chksum(sbi)) { 329 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 330 __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM); 331 return false; 332 } 333 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 334 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 335 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); 336 return false; 337 } 338 if (f2fs_sb_has_inode_crtime(sbi)) { 339 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 340 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); 341 return false; 342 } 343 if (f2fs_sb_has_compression(sbi)) { 344 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 345 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); 346 return false; 347 } 348 } 349 350 if (f2fs_sanity_check_inline_data(inode, node_page)) { 351 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 352 __func__, inode->i_ino, inode->i_mode); 353 return false; 354 } 355 356 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 357 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 358 __func__, inode->i_ino, inode->i_mode); 359 return false; 360 } 361 362 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 363 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 364 __func__, inode->i_ino); 365 return false; 366 } 367 368 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) { 369 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.", 370 __func__, inode->i_ino, fi->i_xattr_nid); 371 return false; 372 } 373 374 if (IS_DEVICE_ALIASING(inode)) { 375 if (!f2fs_sb_has_device_alias(sbi)) { 376 f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but the feature is off", 377 __func__, inode->i_ino); 378 return false; 379 } 380 if (!f2fs_is_pinned_file(inode)) { 381 f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but is not pinned", 382 __func__, inode->i_ino); 383 return false; 384 } 385 } 386 387 return true; 388 } 389 390 static void init_idisk_time(struct inode *inode) 391 { 392 struct f2fs_inode_info *fi = F2FS_I(inode); 393 394 fi->i_disk_time[0] = inode_get_atime(inode); 395 fi->i_disk_time[1] = inode_get_ctime(inode); 396 fi->i_disk_time[2] = inode_get_mtime(inode); 397 } 398 399 static int do_read_inode(struct inode *inode) 400 { 401 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 402 struct f2fs_inode_info *fi = F2FS_I(inode); 403 struct page *node_page; 404 struct f2fs_inode *ri; 405 projid_t i_projid; 406 407 /* Check if ino is within scope */ 408 if (f2fs_check_nid_range(sbi, inode->i_ino)) 409 return -EINVAL; 410 411 node_page = f2fs_get_inode_page(sbi, inode->i_ino); 412 if (IS_ERR(node_page)) 413 return PTR_ERR(node_page); 414 415 ri = F2FS_INODE(node_page); 416 417 inode->i_mode = le16_to_cpu(ri->i_mode); 418 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 419 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 420 set_nlink(inode, le32_to_cpu(ri->i_links)); 421 inode->i_size = le64_to_cpu(ri->i_size); 422 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 423 424 inode_set_atime(inode, le64_to_cpu(ri->i_atime), 425 le32_to_cpu(ri->i_atime_nsec)); 426 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime), 427 le32_to_cpu(ri->i_ctime_nsec)); 428 inode_set_mtime(inode, le64_to_cpu(ri->i_mtime), 429 le32_to_cpu(ri->i_mtime_nsec)); 430 inode->i_generation = le32_to_cpu(ri->i_generation); 431 if (S_ISDIR(inode->i_mode)) 432 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 433 else if (S_ISREG(inode->i_mode)) 434 fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures); 435 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 436 fi->i_flags = le32_to_cpu(ri->i_flags); 437 if (S_ISREG(inode->i_mode)) 438 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 439 bitmap_zero(fi->flags, FI_MAX); 440 fi->i_advise = ri->i_advise; 441 fi->i_pino = le32_to_cpu(ri->i_pino); 442 fi->i_dir_level = ri->i_dir_level; 443 444 get_inline_info(inode, ri); 445 446 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 447 le16_to_cpu(ri->i_extra_isize) : 0; 448 449 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 450 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 451 } else if (f2fs_has_inline_xattr(inode) || 452 f2fs_has_inline_dentry(inode)) { 453 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 454 } else { 455 456 /* 457 * Previous inline data or directory always reserved 200 bytes 458 * in inode layout, even if inline_xattr is disabled. In order 459 * to keep inline_dentry's structure for backward compatibility, 460 * we get the space back only from inline_data. 461 */ 462 fi->i_inline_xattr_size = 0; 463 } 464 465 if (!sanity_check_inode(inode, node_page)) { 466 f2fs_put_page(node_page, 1); 467 set_sbi_flag(sbi, SBI_NEED_FSCK); 468 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 469 return -EFSCORRUPTED; 470 } 471 472 /* check data exist */ 473 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 474 __recover_inline_status(inode, node_page); 475 476 /* try to recover cold bit for non-dir inode */ 477 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 478 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 479 set_cold_node(node_page, false); 480 set_page_dirty(node_page); 481 } 482 483 /* get rdev by using inline_info */ 484 __get_inode_rdev(inode, node_page); 485 486 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 487 fi->last_disk_size = inode->i_size; 488 489 if (fi->i_flags & F2FS_PROJINHERIT_FL) 490 set_inode_flag(inode, FI_PROJ_INHERIT); 491 492 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 493 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 494 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 495 else 496 i_projid = F2FS_DEF_PROJID; 497 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 498 499 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 500 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 501 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 502 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 503 } 504 505 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 506 (fi->i_flags & F2FS_COMPR_FL)) { 507 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 508 i_compress_flag)) { 509 unsigned short compress_flag; 510 511 atomic_set(&fi->i_compr_blocks, 512 le64_to_cpu(ri->i_compr_blocks)); 513 fi->i_compress_algorithm = ri->i_compress_algorithm; 514 fi->i_log_cluster_size = ri->i_log_cluster_size; 515 compress_flag = le16_to_cpu(ri->i_compress_flag); 516 fi->i_compress_level = compress_flag >> 517 COMPRESS_LEVEL_OFFSET; 518 fi->i_compress_flag = compress_flag & 519 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); 520 fi->i_cluster_size = BIT(fi->i_log_cluster_size); 521 set_inode_flag(inode, FI_COMPRESSED_FILE); 522 } 523 } 524 525 init_idisk_time(inode); 526 527 if (!sanity_check_extent_cache(inode, node_page)) { 528 f2fs_put_page(node_page, 1); 529 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 530 return -EFSCORRUPTED; 531 } 532 533 /* Need all the flag bits */ 534 f2fs_init_read_extent_tree(inode, node_page); 535 f2fs_init_age_extent_tree(inode); 536 537 f2fs_put_page(node_page, 1); 538 539 stat_inc_inline_xattr(inode); 540 stat_inc_inline_inode(inode); 541 stat_inc_inline_dir(inode); 542 stat_inc_compr_inode(inode); 543 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 544 545 return 0; 546 } 547 548 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 549 { 550 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 551 ino == F2FS_COMPRESS_INO(sbi); 552 } 553 554 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 555 { 556 struct f2fs_sb_info *sbi = F2FS_SB(sb); 557 struct inode *inode; 558 int ret = 0; 559 560 inode = iget_locked(sb, ino); 561 if (!inode) 562 return ERR_PTR(-ENOMEM); 563 564 if (!(inode->i_state & I_NEW)) { 565 if (is_meta_ino(sbi, ino)) { 566 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 567 set_sbi_flag(sbi, SBI_NEED_FSCK); 568 ret = -EFSCORRUPTED; 569 trace_f2fs_iget_exit(inode, ret); 570 iput(inode); 571 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 572 return ERR_PTR(ret); 573 } 574 575 trace_f2fs_iget(inode); 576 return inode; 577 } 578 579 if (is_meta_ino(sbi, ino)) 580 goto make_now; 581 582 ret = do_read_inode(inode); 583 if (ret) 584 goto bad_inode; 585 make_now: 586 if (ino == F2FS_NODE_INO(sbi)) { 587 inode->i_mapping->a_ops = &f2fs_node_aops; 588 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 589 } else if (ino == F2FS_META_INO(sbi)) { 590 inode->i_mapping->a_ops = &f2fs_meta_aops; 591 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 592 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 593 #ifdef CONFIG_F2FS_FS_COMPRESSION 594 inode->i_mapping->a_ops = &f2fs_compress_aops; 595 /* 596 * generic_error_remove_folio only truncates pages of regular 597 * inode 598 */ 599 inode->i_mode |= S_IFREG; 600 #endif 601 mapping_set_gfp_mask(inode->i_mapping, 602 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 603 } else if (S_ISREG(inode->i_mode)) { 604 inode->i_op = &f2fs_file_inode_operations; 605 inode->i_fop = &f2fs_file_operations; 606 inode->i_mapping->a_ops = &f2fs_dblock_aops; 607 } else if (S_ISDIR(inode->i_mode)) { 608 inode->i_op = &f2fs_dir_inode_operations; 609 inode->i_fop = &f2fs_dir_operations; 610 inode->i_mapping->a_ops = &f2fs_dblock_aops; 611 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 612 } else if (S_ISLNK(inode->i_mode)) { 613 if (file_is_encrypt(inode)) 614 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 615 else 616 inode->i_op = &f2fs_symlink_inode_operations; 617 inode_nohighmem(inode); 618 inode->i_mapping->a_ops = &f2fs_dblock_aops; 619 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 620 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 621 inode->i_op = &f2fs_special_inode_operations; 622 init_special_inode(inode, inode->i_mode, inode->i_rdev); 623 } else { 624 ret = -EIO; 625 goto bad_inode; 626 } 627 f2fs_set_inode_flags(inode); 628 629 unlock_new_inode(inode); 630 trace_f2fs_iget(inode); 631 return inode; 632 633 bad_inode: 634 f2fs_inode_synced(inode); 635 iget_failed(inode); 636 trace_f2fs_iget_exit(inode, ret); 637 return ERR_PTR(ret); 638 } 639 640 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 641 { 642 struct inode *inode; 643 retry: 644 inode = f2fs_iget(sb, ino); 645 if (IS_ERR(inode)) { 646 if (PTR_ERR(inode) == -ENOMEM) { 647 memalloc_retry_wait(GFP_NOFS); 648 goto retry; 649 } 650 } 651 return inode; 652 } 653 654 void f2fs_update_inode(struct inode *inode, struct page *node_page) 655 { 656 struct f2fs_inode_info *fi = F2FS_I(inode); 657 struct f2fs_inode *ri; 658 struct extent_tree *et = fi->extent_tree[EX_READ]; 659 660 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 661 set_page_dirty(node_page); 662 663 f2fs_inode_synced(inode); 664 665 ri = F2FS_INODE(node_page); 666 667 ri->i_mode = cpu_to_le16(inode->i_mode); 668 ri->i_advise = fi->i_advise; 669 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 670 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 671 ri->i_links = cpu_to_le32(inode->i_nlink); 672 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 673 674 if (!f2fs_is_atomic_file(inode) || 675 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) 676 ri->i_size = cpu_to_le64(i_size_read(inode)); 677 678 if (et) { 679 read_lock(&et->lock); 680 set_raw_read_extent(&et->largest, &ri->i_ext); 681 read_unlock(&et->lock); 682 } else { 683 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 684 } 685 set_raw_inline(inode, ri); 686 687 ri->i_atime = cpu_to_le64(inode_get_atime_sec(inode)); 688 ri->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode)); 689 ri->i_mtime = cpu_to_le64(inode_get_mtime_sec(inode)); 690 ri->i_atime_nsec = cpu_to_le32(inode_get_atime_nsec(inode)); 691 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode)); 692 ri->i_mtime_nsec = cpu_to_le32(inode_get_mtime_nsec(inode)); 693 if (S_ISDIR(inode->i_mode)) 694 ri->i_current_depth = cpu_to_le32(fi->i_current_depth); 695 else if (S_ISREG(inode->i_mode)) 696 ri->i_gc_failures = cpu_to_le16(fi->i_gc_failures); 697 ri->i_xattr_nid = cpu_to_le32(fi->i_xattr_nid); 698 ri->i_flags = cpu_to_le32(fi->i_flags); 699 ri->i_pino = cpu_to_le32(fi->i_pino); 700 ri->i_generation = cpu_to_le32(inode->i_generation); 701 ri->i_dir_level = fi->i_dir_level; 702 703 if (f2fs_has_extra_attr(inode)) { 704 ri->i_extra_isize = cpu_to_le16(fi->i_extra_isize); 705 706 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 707 ri->i_inline_xattr_size = 708 cpu_to_le16(fi->i_inline_xattr_size); 709 710 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 711 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) { 712 projid_t i_projid; 713 714 i_projid = from_kprojid(&init_user_ns, fi->i_projid); 715 ri->i_projid = cpu_to_le32(i_projid); 716 } 717 718 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 719 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 720 ri->i_crtime = cpu_to_le64(fi->i_crtime.tv_sec); 721 ri->i_crtime_nsec = cpu_to_le32(fi->i_crtime.tv_nsec); 722 } 723 724 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 725 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 726 i_compress_flag)) { 727 unsigned short compress_flag; 728 729 ri->i_compr_blocks = cpu_to_le64( 730 atomic_read(&fi->i_compr_blocks)); 731 ri->i_compress_algorithm = fi->i_compress_algorithm; 732 compress_flag = fi->i_compress_flag | 733 fi->i_compress_level << 734 COMPRESS_LEVEL_OFFSET; 735 ri->i_compress_flag = cpu_to_le16(compress_flag); 736 ri->i_log_cluster_size = fi->i_log_cluster_size; 737 } 738 } 739 740 __set_inode_rdev(inode, node_page); 741 742 /* deleted inode */ 743 if (inode->i_nlink == 0) 744 clear_page_private_inline(node_page); 745 746 init_idisk_time(inode); 747 #ifdef CONFIG_F2FS_CHECK_FS 748 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 749 #endif 750 } 751 752 void f2fs_update_inode_page(struct inode *inode) 753 { 754 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 755 struct page *node_page; 756 int count = 0; 757 retry: 758 node_page = f2fs_get_inode_page(sbi, inode->i_ino); 759 if (IS_ERR(node_page)) { 760 int err = PTR_ERR(node_page); 761 762 /* The node block was truncated. */ 763 if (err == -ENOENT) 764 return; 765 766 if (err == -EFSCORRUPTED) 767 goto stop_checkpoint; 768 769 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT) 770 goto retry; 771 stop_checkpoint: 772 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE); 773 return; 774 } 775 f2fs_update_inode(inode, node_page); 776 f2fs_put_page(node_page, 1); 777 } 778 779 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 780 { 781 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 782 783 if (inode->i_ino == F2FS_NODE_INO(sbi) || 784 inode->i_ino == F2FS_META_INO(sbi)) 785 return 0; 786 787 /* 788 * atime could be updated without dirtying f2fs inode in lazytime mode 789 */ 790 if (f2fs_is_time_consistent(inode) && 791 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 792 return 0; 793 794 /* 795 * no need to update inode page, ultimately f2fs_evict_inode() will 796 * clear dirty status of inode. 797 */ 798 if (f2fs_cp_error(sbi)) 799 return -EIO; 800 801 if (!f2fs_is_checkpoint_ready(sbi)) { 802 f2fs_mark_inode_dirty_sync(inode, true); 803 return -ENOSPC; 804 } 805 806 /* 807 * We need to balance fs here to prevent from producing dirty node pages 808 * during the urgent cleaning time when running out of free sections. 809 */ 810 f2fs_update_inode_page(inode); 811 if (wbc && wbc->nr_to_write) 812 f2fs_balance_fs(sbi, true); 813 return 0; 814 } 815 816 static void f2fs_remove_donate_inode(struct inode *inode) 817 { 818 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 819 820 if (list_empty(&F2FS_I(inode)->gdonate_list)) 821 return; 822 823 spin_lock(&sbi->inode_lock[DONATE_INODE]); 824 list_del_init(&F2FS_I(inode)->gdonate_list); 825 sbi->donate_files--; 826 spin_unlock(&sbi->inode_lock[DONATE_INODE]); 827 } 828 829 /* 830 * Called at the last iput() if i_nlink is zero 831 */ 832 void f2fs_evict_inode(struct inode *inode) 833 { 834 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 835 struct f2fs_inode_info *fi = F2FS_I(inode); 836 nid_t xnid = fi->i_xattr_nid; 837 int err = 0; 838 bool freeze_protected = false; 839 840 f2fs_abort_atomic_write(inode, true); 841 842 if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) { 843 clear_inode_flag(fi->cow_inode, FI_COW_FILE); 844 F2FS_I(fi->cow_inode)->atomic_inode = NULL; 845 iput(fi->cow_inode); 846 fi->cow_inode = NULL; 847 } 848 849 trace_f2fs_evict_inode(inode); 850 truncate_inode_pages_final(&inode->i_data); 851 852 if ((inode->i_nlink || is_bad_inode(inode)) && 853 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 854 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 855 856 if (inode->i_ino == F2FS_NODE_INO(sbi) || 857 inode->i_ino == F2FS_META_INO(sbi) || 858 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 859 goto out_clear; 860 861 f2fs_bug_on(sbi, get_dirty_pages(inode)); 862 f2fs_remove_dirty_inode(inode); 863 f2fs_remove_donate_inode(inode); 864 865 if (!IS_DEVICE_ALIASING(inode)) 866 f2fs_destroy_extent_tree(inode); 867 868 if (inode->i_nlink || is_bad_inode(inode)) 869 goto no_delete; 870 871 err = f2fs_dquot_initialize(inode); 872 if (err) { 873 err = 0; 874 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 875 } 876 877 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 878 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 879 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 880 881 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) { 882 sb_start_intwrite(inode->i_sb); 883 freeze_protected = true; 884 } 885 set_inode_flag(inode, FI_NO_ALLOC); 886 i_size_write(inode, 0); 887 retry: 888 if (F2FS_HAS_BLOCKS(inode)) 889 err = f2fs_truncate(inode); 890 891 if (time_to_inject(sbi, FAULT_EVICT_INODE)) 892 err = -EIO; 893 894 if (!err) { 895 f2fs_lock_op(sbi); 896 err = f2fs_remove_inode_page(inode); 897 f2fs_unlock_op(sbi); 898 if (err == -ENOENT) { 899 err = 0; 900 901 /* 902 * in fuzzed image, another node may has the same 903 * block address as inode's, if it was truncated 904 * previously, truncation of inode node will fail. 905 */ 906 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 907 f2fs_warn(F2FS_I_SB(inode), 908 "f2fs_evict_inode: inconsistent node id, ino:%lu", 909 inode->i_ino); 910 f2fs_inode_synced(inode); 911 set_sbi_flag(sbi, SBI_NEED_FSCK); 912 } 913 } 914 } 915 916 /* give more chances, if ENOMEM case */ 917 if (err == -ENOMEM) { 918 err = 0; 919 goto retry; 920 } 921 922 if (IS_DEVICE_ALIASING(inode)) 923 f2fs_destroy_extent_tree(inode); 924 925 if (err) { 926 f2fs_update_inode_page(inode); 927 if (dquot_initialize_needed(inode)) 928 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 929 } 930 if (freeze_protected) 931 sb_end_intwrite(inode->i_sb); 932 no_delete: 933 dquot_drop(inode); 934 935 stat_dec_inline_xattr(inode); 936 stat_dec_inline_dir(inode); 937 stat_dec_inline_inode(inode); 938 stat_dec_compr_inode(inode); 939 stat_sub_compr_blocks(inode, 940 atomic_read(&fi->i_compr_blocks)); 941 942 if (likely(!f2fs_cp_error(sbi) && 943 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 944 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 945 else 946 f2fs_inode_synced(inode); 947 948 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 949 if (inode->i_ino) 950 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 951 inode->i_ino); 952 if (xnid) 953 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 954 if (inode->i_nlink) { 955 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 956 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 957 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 958 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 959 } 960 if (is_inode_flag_set(inode, FI_FREE_NID)) { 961 f2fs_alloc_nid_failed(sbi, inode->i_ino); 962 clear_inode_flag(inode, FI_FREE_NID); 963 } else { 964 /* 965 * If xattr nid is corrupted, we can reach out error condition, 966 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 967 * In that case, f2fs_check_nid_range() is enough to give a clue. 968 */ 969 } 970 out_clear: 971 fscrypt_put_encryption_info(inode); 972 fsverity_cleanup_inode(inode); 973 clear_inode(inode); 974 } 975 976 /* caller should call f2fs_lock_op() */ 977 void f2fs_handle_failed_inode(struct inode *inode) 978 { 979 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 980 struct node_info ni; 981 int err; 982 983 /* 984 * clear nlink of inode in order to release resource of inode 985 * immediately. 986 */ 987 clear_nlink(inode); 988 989 /* 990 * we must call this to avoid inode being remained as dirty, resulting 991 * in a panic when flushing dirty inodes in gdirty_list. 992 */ 993 f2fs_update_inode_page(inode); 994 f2fs_inode_synced(inode); 995 996 /* don't make bad inode, since it becomes a regular file. */ 997 unlock_new_inode(inode); 998 999 /* 1000 * Note: we should add inode to orphan list before f2fs_unlock_op() 1001 * so we can prevent losing this orphan when encoutering checkpoint 1002 * and following suddenly power-off. 1003 */ 1004 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 1005 if (err) { 1006 set_sbi_flag(sbi, SBI_NEED_FSCK); 1007 set_inode_flag(inode, FI_FREE_NID); 1008 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 1009 goto out; 1010 } 1011 1012 if (ni.blk_addr != NULL_ADDR) { 1013 err = f2fs_acquire_orphan_inode(sbi); 1014 if (err) { 1015 set_sbi_flag(sbi, SBI_NEED_FSCK); 1016 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 1017 } else { 1018 f2fs_add_orphan_inode(inode); 1019 } 1020 f2fs_alloc_nid_done(sbi, inode->i_ino); 1021 } else { 1022 set_inode_flag(inode, FI_FREE_NID); 1023 } 1024 1025 out: 1026 f2fs_unlock_op(sbi); 1027 1028 /* iput will drop the inode object */ 1029 iput(inode); 1030 } 1031