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_inode_dirtied(inode, sync)) 33 return; 34 35 mark_inode_dirty_sync(inode); 36 } 37 38 void f2fs_set_inode_flags(struct inode *inode) 39 { 40 unsigned int flags = F2FS_I(inode)->i_flags; 41 unsigned int new_fl = 0; 42 43 if (flags & F2FS_SYNC_FL) 44 new_fl |= S_SYNC; 45 if (flags & F2FS_APPEND_FL) 46 new_fl |= S_APPEND; 47 if (flags & F2FS_IMMUTABLE_FL) 48 new_fl |= S_IMMUTABLE; 49 if (flags & F2FS_NOATIME_FL) 50 new_fl |= S_NOATIME; 51 if (flags & F2FS_DIRSYNC_FL) 52 new_fl |= S_DIRSYNC; 53 if (file_is_encrypt(inode)) 54 new_fl |= S_ENCRYPTED; 55 if (file_is_verity(inode)) 56 new_fl |= S_VERITY; 57 if (flags & F2FS_CASEFOLD_FL) 58 new_fl |= S_CASEFOLD; 59 inode_set_flags(inode, new_fl, 60 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC| 61 S_ENCRYPTED|S_VERITY|S_CASEFOLD); 62 } 63 64 static void __get_inode_rdev(struct inode *inode, struct page *node_page) 65 { 66 __le32 *addr = get_dnode_addr(inode, node_page); 67 68 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 69 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 70 if (addr[0]) 71 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0])); 72 else 73 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1])); 74 } 75 } 76 77 static void __set_inode_rdev(struct inode *inode, struct page *node_page) 78 { 79 __le32 *addr = get_dnode_addr(inode, node_page); 80 81 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 82 if (old_valid_dev(inode->i_rdev)) { 83 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev)); 84 addr[1] = 0; 85 } else { 86 addr[0] = 0; 87 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev)); 88 addr[2] = 0; 89 } 90 } 91 } 92 93 static void __recover_inline_status(struct inode *inode, struct page *ipage) 94 { 95 void *inline_data = inline_data_addr(inode, ipage); 96 __le32 *start = inline_data; 97 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 98 99 while (start < end) { 100 if (*start++) { 101 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 102 103 set_inode_flag(inode, FI_DATA_EXIST); 104 set_raw_inline(inode, F2FS_INODE(ipage)); 105 set_page_dirty(ipage); 106 return; 107 } 108 } 109 return; 110 } 111 112 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 113 { 114 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 115 116 if (!f2fs_sb_has_inode_chksum(sbi)) 117 return false; 118 119 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 120 return false; 121 122 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), 123 i_inode_checksum)) 124 return false; 125 126 return true; 127 } 128 129 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 130 { 131 struct f2fs_node *node = F2FS_NODE(page); 132 struct f2fs_inode *ri = &node->i; 133 __le32 ino = node->footer.ino; 134 __le32 gen = ri->i_generation; 135 __u32 chksum, chksum_seed; 136 __u32 dummy_cs = 0; 137 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 138 unsigned int cs_size = sizeof(dummy_cs); 139 140 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 141 sizeof(ino)); 142 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 143 144 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 145 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 146 offset += cs_size; 147 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 148 F2FS_BLKSIZE - offset); 149 return chksum; 150 } 151 152 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 153 { 154 struct f2fs_inode *ri; 155 __u32 provided, calculated; 156 157 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) 158 return true; 159 160 #ifdef CONFIG_F2FS_CHECK_FS 161 if (!f2fs_enable_inode_chksum(sbi, page)) 162 #else 163 if (!f2fs_enable_inode_chksum(sbi, page) || 164 PageDirty(page) || PageWriteback(page)) 165 #endif 166 return true; 167 168 ri = &F2FS_NODE(page)->i; 169 provided = le32_to_cpu(ri->i_inode_checksum); 170 calculated = f2fs_inode_chksum(sbi, page); 171 172 if (provided != calculated) 173 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", 174 page->index, ino_of_node(page), provided, calculated); 175 176 return provided == calculated; 177 } 178 179 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 180 { 181 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 182 183 if (!f2fs_enable_inode_chksum(sbi, page)) 184 return; 185 186 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 187 } 188 189 static bool sanity_check_compress_inode(struct inode *inode, 190 struct f2fs_inode *ri) 191 { 192 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 193 unsigned char clevel; 194 195 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 196 f2fs_warn(sbi, 197 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix", 198 __func__, inode->i_ino, ri->i_compress_algorithm); 199 return false; 200 } 201 if (le64_to_cpu(ri->i_compr_blocks) > 202 SECTOR_TO_BLOCK(inode->i_blocks)) { 203 f2fs_warn(sbi, 204 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 205 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks), 206 SECTOR_TO_BLOCK(inode->i_blocks)); 207 return false; 208 } 209 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 210 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 211 f2fs_warn(sbi, 212 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix", 213 __func__, inode->i_ino, ri->i_log_cluster_size); 214 return false; 215 } 216 217 clevel = le16_to_cpu(ri->i_compress_flag) >> 218 COMPRESS_LEVEL_OFFSET; 219 switch (ri->i_compress_algorithm) { 220 case COMPRESS_LZO: 221 #ifdef CONFIG_F2FS_FS_LZO 222 if (clevel) 223 goto err_level; 224 #endif 225 break; 226 case COMPRESS_LZORLE: 227 #ifdef CONFIG_F2FS_FS_LZORLE 228 if (clevel) 229 goto err_level; 230 #endif 231 break; 232 case COMPRESS_LZ4: 233 #ifdef CONFIG_F2FS_FS_LZ4 234 #ifdef CONFIG_F2FS_FS_LZ4HC 235 if (clevel && 236 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL)) 237 goto err_level; 238 #else 239 if (clevel) 240 goto err_level; 241 #endif 242 #endif 243 break; 244 case COMPRESS_ZSTD: 245 #ifdef CONFIG_F2FS_FS_ZSTD 246 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel()) 247 goto err_level; 248 #endif 249 break; 250 default: 251 goto err_level; 252 } 253 254 return true; 255 err_level: 256 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix", 257 __func__, inode->i_ino, clevel); 258 return false; 259 } 260 261 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 262 { 263 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 264 struct f2fs_inode_info *fi = F2FS_I(inode); 265 struct f2fs_inode *ri = F2FS_INODE(node_page); 266 unsigned long long iblocks; 267 268 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 269 if (!iblocks) { 270 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 271 __func__, inode->i_ino, iblocks); 272 return false; 273 } 274 275 if (ino_of_node(node_page) != nid_of_node(node_page)) { 276 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 277 __func__, inode->i_ino, 278 ino_of_node(node_page), nid_of_node(node_page)); 279 return false; 280 } 281 282 if (f2fs_has_extra_attr(inode)) { 283 if (!f2fs_sb_has_extra_attr(sbi)) { 284 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 285 __func__, inode->i_ino); 286 return false; 287 } 288 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 289 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || 290 fi->i_extra_isize % sizeof(__le32)) { 291 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 292 __func__, inode->i_ino, fi->i_extra_isize, 293 F2FS_TOTAL_EXTRA_ATTR_SIZE); 294 return false; 295 } 296 if (f2fs_sb_has_flexible_inline_xattr(sbi) && 297 f2fs_has_inline_xattr(inode) && 298 (!fi->i_inline_xattr_size || 299 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 300 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", 301 __func__, inode->i_ino, fi->i_inline_xattr_size, 302 MAX_INLINE_XATTR_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 } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 313 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", 314 __func__, inode->i_ino); 315 return false; 316 } 317 318 if (!f2fs_sb_has_extra_attr(sbi)) { 319 if (f2fs_sb_has_project_quota(sbi)) { 320 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 321 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA); 322 return false; 323 } 324 if (f2fs_sb_has_inode_chksum(sbi)) { 325 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 326 __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM); 327 return false; 328 } 329 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 330 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 331 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); 332 return false; 333 } 334 if (f2fs_sb_has_inode_crtime(sbi)) { 335 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 336 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); 337 return false; 338 } 339 if (f2fs_sb_has_compression(sbi)) { 340 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 341 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); 342 return false; 343 } 344 } 345 346 if (f2fs_sanity_check_inline_data(inode)) { 347 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 348 __func__, inode->i_ino, inode->i_mode); 349 return false; 350 } 351 352 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 353 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 354 __func__, inode->i_ino, inode->i_mode); 355 return false; 356 } 357 358 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 359 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 360 __func__, inode->i_ino); 361 return false; 362 } 363 364 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) { 365 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.", 366 __func__, inode->i_ino, fi->i_xattr_nid); 367 return false; 368 } 369 370 return true; 371 } 372 373 static void init_idisk_time(struct inode *inode) 374 { 375 struct f2fs_inode_info *fi = F2FS_I(inode); 376 377 fi->i_disk_time[0] = inode->i_atime; 378 fi->i_disk_time[1] = inode_get_ctime(inode); 379 fi->i_disk_time[2] = inode->i_mtime; 380 } 381 382 static int do_read_inode(struct inode *inode) 383 { 384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 385 struct f2fs_inode_info *fi = F2FS_I(inode); 386 struct page *node_page; 387 struct f2fs_inode *ri; 388 projid_t i_projid; 389 390 /* Check if ino is within scope */ 391 if (f2fs_check_nid_range(sbi, inode->i_ino)) 392 return -EINVAL; 393 394 node_page = f2fs_get_node_page(sbi, inode->i_ino); 395 if (IS_ERR(node_page)) 396 return PTR_ERR(node_page); 397 398 ri = F2FS_INODE(node_page); 399 400 inode->i_mode = le16_to_cpu(ri->i_mode); 401 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 402 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 403 set_nlink(inode, le32_to_cpu(ri->i_links)); 404 inode->i_size = le64_to_cpu(ri->i_size); 405 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 406 407 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 408 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime), 409 le32_to_cpu(ri->i_ctime_nsec)); 410 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 411 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 412 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 413 inode->i_generation = le32_to_cpu(ri->i_generation); 414 if (S_ISDIR(inode->i_mode)) 415 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 416 else if (S_ISREG(inode->i_mode)) 417 fi->i_gc_failures[GC_FAILURE_PIN] = 418 le16_to_cpu(ri->i_gc_failures); 419 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 420 fi->i_flags = le32_to_cpu(ri->i_flags); 421 if (S_ISREG(inode->i_mode)) 422 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 423 bitmap_zero(fi->flags, FI_MAX); 424 fi->i_advise = ri->i_advise; 425 fi->i_pino = le32_to_cpu(ri->i_pino); 426 fi->i_dir_level = ri->i_dir_level; 427 428 get_inline_info(inode, ri); 429 430 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 431 le16_to_cpu(ri->i_extra_isize) : 0; 432 433 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 434 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 435 } else if (f2fs_has_inline_xattr(inode) || 436 f2fs_has_inline_dentry(inode)) { 437 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 438 } else { 439 440 /* 441 * Previous inline data or directory always reserved 200 bytes 442 * in inode layout, even if inline_xattr is disabled. In order 443 * to keep inline_dentry's structure for backward compatibility, 444 * we get the space back only from inline_data. 445 */ 446 fi->i_inline_xattr_size = 0; 447 } 448 449 if (!sanity_check_inode(inode, node_page)) { 450 f2fs_put_page(node_page, 1); 451 set_sbi_flag(sbi, SBI_NEED_FSCK); 452 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 453 return -EFSCORRUPTED; 454 } 455 456 /* check data exist */ 457 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 458 __recover_inline_status(inode, node_page); 459 460 /* try to recover cold bit for non-dir inode */ 461 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 462 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 463 set_cold_node(node_page, false); 464 set_page_dirty(node_page); 465 } 466 467 /* get rdev by using inline_info */ 468 __get_inode_rdev(inode, node_page); 469 470 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 471 fi->last_disk_size = inode->i_size; 472 473 if (fi->i_flags & F2FS_PROJINHERIT_FL) 474 set_inode_flag(inode, FI_PROJ_INHERIT); 475 476 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 477 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 478 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 479 else 480 i_projid = F2FS_DEF_PROJID; 481 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 482 483 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 484 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 485 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 486 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 487 } 488 489 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 490 (fi->i_flags & F2FS_COMPR_FL)) { 491 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 492 i_compress_flag)) { 493 unsigned short compress_flag; 494 495 atomic_set(&fi->i_compr_blocks, 496 le64_to_cpu(ri->i_compr_blocks)); 497 fi->i_compress_algorithm = ri->i_compress_algorithm; 498 fi->i_log_cluster_size = ri->i_log_cluster_size; 499 compress_flag = le16_to_cpu(ri->i_compress_flag); 500 fi->i_compress_level = compress_flag >> 501 COMPRESS_LEVEL_OFFSET; 502 fi->i_compress_flag = compress_flag & 503 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); 504 fi->i_cluster_size = BIT(fi->i_log_cluster_size); 505 set_inode_flag(inode, FI_COMPRESSED_FILE); 506 } 507 } 508 509 init_idisk_time(inode); 510 511 /* Need all the flag bits */ 512 f2fs_init_read_extent_tree(inode, node_page); 513 f2fs_init_age_extent_tree(inode); 514 515 if (!sanity_check_extent_cache(inode)) { 516 f2fs_put_page(node_page, 1); 517 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 518 return -EFSCORRUPTED; 519 } 520 521 f2fs_put_page(node_page, 1); 522 523 stat_inc_inline_xattr(inode); 524 stat_inc_inline_inode(inode); 525 stat_inc_inline_dir(inode); 526 stat_inc_compr_inode(inode); 527 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 528 529 return 0; 530 } 531 532 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 533 { 534 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 535 ino == F2FS_COMPRESS_INO(sbi); 536 } 537 538 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 539 { 540 struct f2fs_sb_info *sbi = F2FS_SB(sb); 541 struct inode *inode; 542 int ret = 0; 543 544 inode = iget_locked(sb, ino); 545 if (!inode) 546 return ERR_PTR(-ENOMEM); 547 548 if (!(inode->i_state & I_NEW)) { 549 if (is_meta_ino(sbi, ino)) { 550 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 551 set_sbi_flag(sbi, SBI_NEED_FSCK); 552 ret = -EFSCORRUPTED; 553 trace_f2fs_iget_exit(inode, ret); 554 iput(inode); 555 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 556 return ERR_PTR(ret); 557 } 558 559 trace_f2fs_iget(inode); 560 return inode; 561 } 562 563 if (is_meta_ino(sbi, ino)) 564 goto make_now; 565 566 ret = do_read_inode(inode); 567 if (ret) 568 goto bad_inode; 569 make_now: 570 if (ino == F2FS_NODE_INO(sbi)) { 571 inode->i_mapping->a_ops = &f2fs_node_aops; 572 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 573 } else if (ino == F2FS_META_INO(sbi)) { 574 inode->i_mapping->a_ops = &f2fs_meta_aops; 575 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 576 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 577 #ifdef CONFIG_F2FS_FS_COMPRESSION 578 inode->i_mapping->a_ops = &f2fs_compress_aops; 579 /* 580 * generic_error_remove_page only truncates pages of regular 581 * inode 582 */ 583 inode->i_mode |= S_IFREG; 584 #endif 585 mapping_set_gfp_mask(inode->i_mapping, 586 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 587 } else if (S_ISREG(inode->i_mode)) { 588 inode->i_op = &f2fs_file_inode_operations; 589 inode->i_fop = &f2fs_file_operations; 590 inode->i_mapping->a_ops = &f2fs_dblock_aops; 591 } else if (S_ISDIR(inode->i_mode)) { 592 inode->i_op = &f2fs_dir_inode_operations; 593 inode->i_fop = &f2fs_dir_operations; 594 inode->i_mapping->a_ops = &f2fs_dblock_aops; 595 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 596 } else if (S_ISLNK(inode->i_mode)) { 597 if (file_is_encrypt(inode)) 598 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 599 else 600 inode->i_op = &f2fs_symlink_inode_operations; 601 inode_nohighmem(inode); 602 inode->i_mapping->a_ops = &f2fs_dblock_aops; 603 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 604 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 605 inode->i_op = &f2fs_special_inode_operations; 606 init_special_inode(inode, inode->i_mode, inode->i_rdev); 607 } else { 608 ret = -EIO; 609 goto bad_inode; 610 } 611 f2fs_set_inode_flags(inode); 612 613 if (file_should_truncate(inode) && 614 !is_sbi_flag_set(sbi, SBI_POR_DOING)) { 615 ret = f2fs_truncate(inode); 616 if (ret) 617 goto bad_inode; 618 file_dont_truncate(inode); 619 } 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) { 817 clear_inode_flag(fi->cow_inode, FI_COW_FILE); 818 iput(fi->cow_inode); 819 fi->cow_inode = NULL; 820 } 821 822 trace_f2fs_evict_inode(inode); 823 truncate_inode_pages_final(&inode->i_data); 824 825 if ((inode->i_nlink || is_bad_inode(inode)) && 826 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 827 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 828 829 if (inode->i_ino == F2FS_NODE_INO(sbi) || 830 inode->i_ino == F2FS_META_INO(sbi) || 831 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 832 goto out_clear; 833 834 f2fs_bug_on(sbi, get_dirty_pages(inode)); 835 f2fs_remove_dirty_inode(inode); 836 837 f2fs_destroy_extent_tree(inode); 838 839 if (inode->i_nlink || is_bad_inode(inode)) 840 goto no_delete; 841 842 err = f2fs_dquot_initialize(inode); 843 if (err) { 844 err = 0; 845 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 846 } 847 848 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 849 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 850 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 851 852 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 853 sb_start_intwrite(inode->i_sb); 854 set_inode_flag(inode, FI_NO_ALLOC); 855 i_size_write(inode, 0); 856 retry: 857 if (F2FS_HAS_BLOCKS(inode)) 858 err = f2fs_truncate(inode); 859 860 if (time_to_inject(sbi, FAULT_EVICT_INODE)) 861 err = -EIO; 862 863 if (!err) { 864 f2fs_lock_op(sbi); 865 err = f2fs_remove_inode_page(inode); 866 f2fs_unlock_op(sbi); 867 if (err == -ENOENT) { 868 err = 0; 869 870 /* 871 * in fuzzed image, another node may has the same 872 * block address as inode's, if it was truncated 873 * previously, truncation of inode node will fail. 874 */ 875 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 876 f2fs_warn(F2FS_I_SB(inode), 877 "f2fs_evict_inode: inconsistent node id, ino:%lu", 878 inode->i_ino); 879 f2fs_inode_synced(inode); 880 set_sbi_flag(sbi, SBI_NEED_FSCK); 881 } 882 } 883 } 884 885 /* give more chances, if ENOMEM case */ 886 if (err == -ENOMEM) { 887 err = 0; 888 goto retry; 889 } 890 891 if (err) { 892 f2fs_update_inode_page(inode); 893 if (dquot_initialize_needed(inode)) 894 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 895 } 896 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 897 sb_end_intwrite(inode->i_sb); 898 no_delete: 899 dquot_drop(inode); 900 901 stat_dec_inline_xattr(inode); 902 stat_dec_inline_dir(inode); 903 stat_dec_inline_inode(inode); 904 stat_dec_compr_inode(inode); 905 stat_sub_compr_blocks(inode, 906 atomic_read(&fi->i_compr_blocks)); 907 908 if (likely(!f2fs_cp_error(sbi) && 909 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 910 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 911 else 912 f2fs_inode_synced(inode); 913 914 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 915 if (inode->i_ino) 916 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 917 inode->i_ino); 918 if (xnid) 919 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 920 if (inode->i_nlink) { 921 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 922 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 923 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 924 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 925 } 926 if (is_inode_flag_set(inode, FI_FREE_NID)) { 927 f2fs_alloc_nid_failed(sbi, inode->i_ino); 928 clear_inode_flag(inode, FI_FREE_NID); 929 } else { 930 /* 931 * If xattr nid is corrupted, we can reach out error condition, 932 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 933 * In that case, f2fs_check_nid_range() is enough to give a clue. 934 */ 935 } 936 out_clear: 937 fscrypt_put_encryption_info(inode); 938 fsverity_cleanup_inode(inode); 939 clear_inode(inode); 940 } 941 942 /* caller should call f2fs_lock_op() */ 943 void f2fs_handle_failed_inode(struct inode *inode) 944 { 945 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 946 struct node_info ni; 947 int err; 948 949 /* 950 * clear nlink of inode in order to release resource of inode 951 * immediately. 952 */ 953 clear_nlink(inode); 954 955 /* 956 * we must call this to avoid inode being remained as dirty, resulting 957 * in a panic when flushing dirty inodes in gdirty_list. 958 */ 959 f2fs_update_inode_page(inode); 960 f2fs_inode_synced(inode); 961 962 /* don't make bad inode, since it becomes a regular file. */ 963 unlock_new_inode(inode); 964 965 /* 966 * Note: we should add inode to orphan list before f2fs_unlock_op() 967 * so we can prevent losing this orphan when encoutering checkpoint 968 * and following suddenly power-off. 969 */ 970 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 971 if (err) { 972 set_sbi_flag(sbi, SBI_NEED_FSCK); 973 set_inode_flag(inode, FI_FREE_NID); 974 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 975 goto out; 976 } 977 978 if (ni.blk_addr != NULL_ADDR) { 979 err = f2fs_acquire_orphan_inode(sbi); 980 if (err) { 981 set_sbi_flag(sbi, SBI_NEED_FSCK); 982 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 983 } else { 984 f2fs_add_orphan_inode(inode); 985 } 986 f2fs_alloc_nid_done(sbi, inode->i_ino); 987 } else { 988 set_inode_flag(inode, FI_FREE_NID); 989 } 990 991 out: 992 f2fs_unlock_op(sbi); 993 994 /* iput will drop the inode object */ 995 iput(inode); 996 } 997