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