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 f2fs_inode *ri) 65 { 66 int extra_size = get_extra_isize(inode); 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 (ri->i_addr[extra_size]) 71 inode->i_rdev = old_decode_dev( 72 le32_to_cpu(ri->i_addr[extra_size])); 73 else 74 inode->i_rdev = new_decode_dev( 75 le32_to_cpu(ri->i_addr[extra_size + 1])); 76 } 77 } 78 79 static int __written_first_block(struct f2fs_sb_info *sbi, 80 struct f2fs_inode *ri) 81 { 82 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]); 83 84 if (!__is_valid_data_blkaddr(addr)) 85 return 1; 86 if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE)) { 87 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); 88 return -EFSCORRUPTED; 89 } 90 return 0; 91 } 92 93 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) 94 { 95 int extra_size = get_extra_isize(inode); 96 97 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 98 if (old_valid_dev(inode->i_rdev)) { 99 ri->i_addr[extra_size] = 100 cpu_to_le32(old_encode_dev(inode->i_rdev)); 101 ri->i_addr[extra_size + 1] = 0; 102 } else { 103 ri->i_addr[extra_size] = 0; 104 ri->i_addr[extra_size + 1] = 105 cpu_to_le32(new_encode_dev(inode->i_rdev)); 106 ri->i_addr[extra_size + 2] = 0; 107 } 108 } 109 } 110 111 static void __recover_inline_status(struct inode *inode, struct page *ipage) 112 { 113 void *inline_data = inline_data_addr(inode, ipage); 114 __le32 *start = inline_data; 115 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 116 117 while (start < end) { 118 if (*start++) { 119 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 120 121 set_inode_flag(inode, FI_DATA_EXIST); 122 set_raw_inline(inode, F2FS_INODE(ipage)); 123 set_page_dirty(ipage); 124 return; 125 } 126 } 127 return; 128 } 129 130 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 131 { 132 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 133 134 if (!f2fs_sb_has_inode_chksum(sbi)) 135 return false; 136 137 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 138 return false; 139 140 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), 141 i_inode_checksum)) 142 return false; 143 144 return true; 145 } 146 147 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 148 { 149 struct f2fs_node *node = F2FS_NODE(page); 150 struct f2fs_inode *ri = &node->i; 151 __le32 ino = node->footer.ino; 152 __le32 gen = ri->i_generation; 153 __u32 chksum, chksum_seed; 154 __u32 dummy_cs = 0; 155 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 156 unsigned int cs_size = sizeof(dummy_cs); 157 158 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 159 sizeof(ino)); 160 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 161 162 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 163 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 164 offset += cs_size; 165 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 166 F2FS_BLKSIZE - offset); 167 return chksum; 168 } 169 170 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 171 { 172 struct f2fs_inode *ri; 173 __u32 provided, calculated; 174 175 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) 176 return true; 177 178 #ifdef CONFIG_F2FS_CHECK_FS 179 if (!f2fs_enable_inode_chksum(sbi, page)) 180 #else 181 if (!f2fs_enable_inode_chksum(sbi, page) || 182 PageDirty(page) || PageWriteback(page)) 183 #endif 184 return true; 185 186 ri = &F2FS_NODE(page)->i; 187 provided = le32_to_cpu(ri->i_inode_checksum); 188 calculated = f2fs_inode_chksum(sbi, page); 189 190 if (provided != calculated) 191 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", 192 page->index, ino_of_node(page), provided, calculated); 193 194 return provided == calculated; 195 } 196 197 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 198 { 199 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 200 201 if (!f2fs_enable_inode_chksum(sbi, page)) 202 return; 203 204 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 205 } 206 207 static bool sanity_check_compress_inode(struct inode *inode, 208 struct f2fs_inode *ri) 209 { 210 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 211 unsigned char clevel; 212 213 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 214 f2fs_warn(sbi, 215 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix", 216 __func__, inode->i_ino, ri->i_compress_algorithm); 217 return false; 218 } 219 if (le64_to_cpu(ri->i_compr_blocks) > 220 SECTOR_TO_BLOCK(inode->i_blocks)) { 221 f2fs_warn(sbi, 222 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 223 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks), 224 SECTOR_TO_BLOCK(inode->i_blocks)); 225 return false; 226 } 227 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 228 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 229 f2fs_warn(sbi, 230 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix", 231 __func__, inode->i_ino, ri->i_log_cluster_size); 232 return false; 233 } 234 235 clevel = le16_to_cpu(ri->i_compress_flag) >> 236 COMPRESS_LEVEL_OFFSET; 237 switch (ri->i_compress_algorithm) { 238 case COMPRESS_LZO: 239 #ifdef CONFIG_F2FS_FS_LZO 240 if (clevel) 241 goto err_level; 242 #endif 243 break; 244 case COMPRESS_LZORLE: 245 #ifdef CONFIG_F2FS_FS_LZORLE 246 if (clevel) 247 goto err_level; 248 #endif 249 break; 250 case COMPRESS_LZ4: 251 #ifdef CONFIG_F2FS_FS_LZ4 252 #ifdef CONFIG_F2FS_FS_LZ4HC 253 if (clevel && 254 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL)) 255 goto err_level; 256 #else 257 if (clevel) 258 goto err_level; 259 #endif 260 #endif 261 break; 262 case COMPRESS_ZSTD: 263 #ifdef CONFIG_F2FS_FS_ZSTD 264 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel()) 265 goto err_level; 266 #endif 267 break; 268 default: 269 goto err_level; 270 } 271 272 return true; 273 err_level: 274 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix", 275 __func__, inode->i_ino, clevel); 276 return false; 277 } 278 279 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 280 { 281 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 282 struct f2fs_inode_info *fi = F2FS_I(inode); 283 struct f2fs_inode *ri = F2FS_INODE(node_page); 284 unsigned long long iblocks; 285 286 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 287 if (!iblocks) { 288 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 289 __func__, inode->i_ino, iblocks); 290 return false; 291 } 292 293 if (ino_of_node(node_page) != nid_of_node(node_page)) { 294 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 295 __func__, inode->i_ino, 296 ino_of_node(node_page), nid_of_node(node_page)); 297 return false; 298 } 299 300 if (f2fs_has_extra_attr(inode)) { 301 if (!f2fs_sb_has_extra_attr(sbi)) { 302 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 303 __func__, inode->i_ino); 304 return false; 305 } 306 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 307 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || 308 fi->i_extra_isize % sizeof(__le32)) { 309 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 310 __func__, inode->i_ino, fi->i_extra_isize, 311 F2FS_TOTAL_EXTRA_ATTR_SIZE); 312 return false; 313 } 314 if (f2fs_sb_has_flexible_inline_xattr(sbi) && 315 f2fs_has_inline_xattr(inode) && 316 (!fi->i_inline_xattr_size || 317 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 318 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", 319 __func__, inode->i_ino, fi->i_inline_xattr_size, 320 MAX_INLINE_XATTR_SIZE); 321 return false; 322 } 323 if (f2fs_sb_has_compression(sbi) && 324 fi->i_flags & F2FS_COMPR_FL && 325 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 326 i_compress_flag)) { 327 if (!sanity_check_compress_inode(inode, ri)) 328 return false; 329 } 330 } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 331 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", 332 __func__, inode->i_ino); 333 return false; 334 } 335 336 if (!f2fs_sb_has_extra_attr(sbi)) { 337 if (f2fs_sb_has_project_quota(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_PRJQUOTA); 340 return false; 341 } 342 if (f2fs_sb_has_inode_chksum(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_CHKSUM); 345 return false; 346 } 347 if (f2fs_sb_has_flexible_inline_xattr(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_FLEXIBLE_INLINE_XATTR); 350 return false; 351 } 352 if (f2fs_sb_has_inode_crtime(sbi)) { 353 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 354 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); 355 return false; 356 } 357 if (f2fs_sb_has_compression(sbi)) { 358 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 359 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); 360 return false; 361 } 362 } 363 364 if (f2fs_sanity_check_inline_data(inode)) { 365 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 366 __func__, inode->i_ino, inode->i_mode); 367 return false; 368 } 369 370 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 371 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 372 __func__, inode->i_ino, inode->i_mode); 373 return false; 374 } 375 376 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 377 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 378 __func__, inode->i_ino); 379 return false; 380 } 381 382 return true; 383 } 384 385 static void init_idisk_time(struct inode *inode) 386 { 387 struct f2fs_inode_info *fi = F2FS_I(inode); 388 389 fi->i_disk_time[0] = inode->i_atime; 390 fi->i_disk_time[1] = inode_get_ctime(inode); 391 fi->i_disk_time[2] = inode->i_mtime; 392 } 393 394 static int do_read_inode(struct inode *inode) 395 { 396 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 397 struct f2fs_inode_info *fi = F2FS_I(inode); 398 struct page *node_page; 399 struct f2fs_inode *ri; 400 projid_t i_projid; 401 int err; 402 403 /* Check if ino is within scope */ 404 if (f2fs_check_nid_range(sbi, inode->i_ino)) 405 return -EINVAL; 406 407 node_page = f2fs_get_node_page(sbi, inode->i_ino); 408 if (IS_ERR(node_page)) 409 return PTR_ERR(node_page); 410 411 ri = F2FS_INODE(node_page); 412 413 inode->i_mode = le16_to_cpu(ri->i_mode); 414 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 415 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 416 set_nlink(inode, le32_to_cpu(ri->i_links)); 417 inode->i_size = le64_to_cpu(ri->i_size); 418 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 419 420 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 421 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime), 422 le32_to_cpu(ri->i_ctime_nsec)); 423 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 424 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 425 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 426 inode->i_generation = le32_to_cpu(ri->i_generation); 427 if (S_ISDIR(inode->i_mode)) 428 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 429 else if (S_ISREG(inode->i_mode)) 430 fi->i_gc_failures[GC_FAILURE_PIN] = 431 le16_to_cpu(ri->i_gc_failures); 432 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 433 fi->i_flags = le32_to_cpu(ri->i_flags); 434 if (S_ISREG(inode->i_mode)) 435 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 436 bitmap_zero(fi->flags, FI_MAX); 437 fi->i_advise = ri->i_advise; 438 fi->i_pino = le32_to_cpu(ri->i_pino); 439 fi->i_dir_level = ri->i_dir_level; 440 441 get_inline_info(inode, ri); 442 443 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 444 le16_to_cpu(ri->i_extra_isize) : 0; 445 446 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 447 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 448 } else if (f2fs_has_inline_xattr(inode) || 449 f2fs_has_inline_dentry(inode)) { 450 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 451 } else { 452 453 /* 454 * Previous inline data or directory always reserved 200 bytes 455 * in inode layout, even if inline_xattr is disabled. In order 456 * to keep inline_dentry's structure for backward compatibility, 457 * we get the space back only from inline_data. 458 */ 459 fi->i_inline_xattr_size = 0; 460 } 461 462 if (!sanity_check_inode(inode, node_page)) { 463 f2fs_put_page(node_page, 1); 464 set_sbi_flag(sbi, SBI_NEED_FSCK); 465 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 466 return -EFSCORRUPTED; 467 } 468 469 /* check data exist */ 470 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 471 __recover_inline_status(inode, node_page); 472 473 /* try to recover cold bit for non-dir inode */ 474 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 475 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 476 set_cold_node(node_page, false); 477 set_page_dirty(node_page); 478 } 479 480 /* get rdev by using inline_info */ 481 __get_inode_rdev(inode, ri); 482 483 if (S_ISREG(inode->i_mode)) { 484 err = __written_first_block(sbi, ri); 485 if (err < 0) { 486 f2fs_put_page(node_page, 1); 487 return err; 488 } 489 if (!err) 490 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 491 } 492 493 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 494 fi->last_disk_size = inode->i_size; 495 496 if (fi->i_flags & F2FS_PROJINHERIT_FL) 497 set_inode_flag(inode, FI_PROJ_INHERIT); 498 499 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 500 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 501 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 502 else 503 i_projid = F2FS_DEF_PROJID; 504 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 505 506 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 507 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 508 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 509 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 510 } 511 512 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 513 (fi->i_flags & F2FS_COMPR_FL)) { 514 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 515 i_compress_flag)) { 516 unsigned short compress_flag; 517 518 atomic_set(&fi->i_compr_blocks, 519 le64_to_cpu(ri->i_compr_blocks)); 520 fi->i_compress_algorithm = ri->i_compress_algorithm; 521 fi->i_log_cluster_size = ri->i_log_cluster_size; 522 compress_flag = le16_to_cpu(ri->i_compress_flag); 523 fi->i_compress_level = compress_flag >> 524 COMPRESS_LEVEL_OFFSET; 525 fi->i_compress_flag = compress_flag & 526 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); 527 fi->i_cluster_size = BIT(fi->i_log_cluster_size); 528 set_inode_flag(inode, FI_COMPRESSED_FILE); 529 } 530 } 531 532 init_idisk_time(inode); 533 534 /* Need all the flag bits */ 535 f2fs_init_read_extent_tree(inode, node_page); 536 f2fs_init_age_extent_tree(inode); 537 538 if (!sanity_check_extent_cache(inode)) { 539 f2fs_put_page(node_page, 1); 540 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 541 return -EFSCORRUPTED; 542 } 543 544 f2fs_put_page(node_page, 1); 545 546 stat_inc_inline_xattr(inode); 547 stat_inc_inline_inode(inode); 548 stat_inc_inline_dir(inode); 549 stat_inc_compr_inode(inode); 550 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 551 552 return 0; 553 } 554 555 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 556 { 557 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 558 ino == F2FS_COMPRESS_INO(sbi); 559 } 560 561 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 562 { 563 struct f2fs_sb_info *sbi = F2FS_SB(sb); 564 struct inode *inode; 565 int ret = 0; 566 567 inode = iget_locked(sb, ino); 568 if (!inode) 569 return ERR_PTR(-ENOMEM); 570 571 if (!(inode->i_state & I_NEW)) { 572 if (is_meta_ino(sbi, ino)) { 573 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 574 set_sbi_flag(sbi, SBI_NEED_FSCK); 575 ret = -EFSCORRUPTED; 576 trace_f2fs_iget_exit(inode, ret); 577 iput(inode); 578 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 579 return ERR_PTR(ret); 580 } 581 582 trace_f2fs_iget(inode); 583 return inode; 584 } 585 586 if (is_meta_ino(sbi, ino)) 587 goto make_now; 588 589 ret = do_read_inode(inode); 590 if (ret) 591 goto bad_inode; 592 make_now: 593 if (ino == F2FS_NODE_INO(sbi)) { 594 inode->i_mapping->a_ops = &f2fs_node_aops; 595 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 596 } else if (ino == F2FS_META_INO(sbi)) { 597 inode->i_mapping->a_ops = &f2fs_meta_aops; 598 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 599 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 600 #ifdef CONFIG_F2FS_FS_COMPRESSION 601 inode->i_mapping->a_ops = &f2fs_compress_aops; 602 /* 603 * generic_error_remove_page only truncates pages of regular 604 * inode 605 */ 606 inode->i_mode |= S_IFREG; 607 #endif 608 mapping_set_gfp_mask(inode->i_mapping, 609 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 610 } else if (S_ISREG(inode->i_mode)) { 611 inode->i_op = &f2fs_file_inode_operations; 612 inode->i_fop = &f2fs_file_operations; 613 inode->i_mapping->a_ops = &f2fs_dblock_aops; 614 } else if (S_ISDIR(inode->i_mode)) { 615 inode->i_op = &f2fs_dir_inode_operations; 616 inode->i_fop = &f2fs_dir_operations; 617 inode->i_mapping->a_ops = &f2fs_dblock_aops; 618 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 619 } else if (S_ISLNK(inode->i_mode)) { 620 if (file_is_encrypt(inode)) 621 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 622 else 623 inode->i_op = &f2fs_symlink_inode_operations; 624 inode_nohighmem(inode); 625 inode->i_mapping->a_ops = &f2fs_dblock_aops; 626 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 627 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 628 inode->i_op = &f2fs_special_inode_operations; 629 init_special_inode(inode, inode->i_mode, inode->i_rdev); 630 } else { 631 ret = -EIO; 632 goto bad_inode; 633 } 634 f2fs_set_inode_flags(inode); 635 636 if (file_should_truncate(inode) && 637 !is_sbi_flag_set(sbi, SBI_POR_DOING)) { 638 ret = f2fs_truncate(inode); 639 if (ret) 640 goto bad_inode; 641 file_dont_truncate(inode); 642 } 643 644 unlock_new_inode(inode); 645 trace_f2fs_iget(inode); 646 return inode; 647 648 bad_inode: 649 f2fs_inode_synced(inode); 650 iget_failed(inode); 651 trace_f2fs_iget_exit(inode, ret); 652 return ERR_PTR(ret); 653 } 654 655 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 656 { 657 struct inode *inode; 658 retry: 659 inode = f2fs_iget(sb, ino); 660 if (IS_ERR(inode)) { 661 if (PTR_ERR(inode) == -ENOMEM) { 662 memalloc_retry_wait(GFP_NOFS); 663 goto retry; 664 } 665 } 666 return inode; 667 } 668 669 void f2fs_update_inode(struct inode *inode, struct page *node_page) 670 { 671 struct f2fs_inode *ri; 672 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ]; 673 674 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 675 set_page_dirty(node_page); 676 677 f2fs_inode_synced(inode); 678 679 ri = F2FS_INODE(node_page); 680 681 ri->i_mode = cpu_to_le16(inode->i_mode); 682 ri->i_advise = F2FS_I(inode)->i_advise; 683 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 684 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 685 ri->i_links = cpu_to_le32(inode->i_nlink); 686 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 687 688 if (!f2fs_is_atomic_file(inode) || 689 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) 690 ri->i_size = cpu_to_le64(i_size_read(inode)); 691 692 if (et) { 693 read_lock(&et->lock); 694 set_raw_read_extent(&et->largest, &ri->i_ext); 695 read_unlock(&et->lock); 696 } else { 697 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 698 } 699 set_raw_inline(inode, ri); 700 701 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 702 ri->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); 703 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 704 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 705 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); 706 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 707 if (S_ISDIR(inode->i_mode)) 708 ri->i_current_depth = 709 cpu_to_le32(F2FS_I(inode)->i_current_depth); 710 else if (S_ISREG(inode->i_mode)) 711 ri->i_gc_failures = 712 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); 713 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 714 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 715 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 716 ri->i_generation = cpu_to_le32(inode->i_generation); 717 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 718 719 if (f2fs_has_extra_attr(inode)) { 720 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 721 722 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 723 ri->i_inline_xattr_size = 724 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 725 726 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 727 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 728 i_projid)) { 729 projid_t i_projid; 730 731 i_projid = from_kprojid(&init_user_ns, 732 F2FS_I(inode)->i_projid); 733 ri->i_projid = cpu_to_le32(i_projid); 734 } 735 736 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 737 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 738 i_crtime)) { 739 ri->i_crtime = 740 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 741 ri->i_crtime_nsec = 742 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 743 } 744 745 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 746 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 747 i_compress_flag)) { 748 unsigned short compress_flag; 749 750 ri->i_compr_blocks = 751 cpu_to_le64(atomic_read( 752 &F2FS_I(inode)->i_compr_blocks)); 753 ri->i_compress_algorithm = 754 F2FS_I(inode)->i_compress_algorithm; 755 compress_flag = F2FS_I(inode)->i_compress_flag | 756 F2FS_I(inode)->i_compress_level << 757 COMPRESS_LEVEL_OFFSET; 758 ri->i_compress_flag = cpu_to_le16(compress_flag); 759 ri->i_log_cluster_size = 760 F2FS_I(inode)->i_log_cluster_size; 761 } 762 } 763 764 __set_inode_rdev(inode, ri); 765 766 /* deleted inode */ 767 if (inode->i_nlink == 0) 768 clear_page_private_inline(node_page); 769 770 init_idisk_time(inode); 771 #ifdef CONFIG_F2FS_CHECK_FS 772 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 773 #endif 774 } 775 776 void f2fs_update_inode_page(struct inode *inode) 777 { 778 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 779 struct page *node_page; 780 int count = 0; 781 retry: 782 node_page = f2fs_get_node_page(sbi, inode->i_ino); 783 if (IS_ERR(node_page)) { 784 int err = PTR_ERR(node_page); 785 786 /* The node block was truncated. */ 787 if (err == -ENOENT) 788 return; 789 790 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT) 791 goto retry; 792 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE); 793 return; 794 } 795 f2fs_update_inode(inode, node_page); 796 f2fs_put_page(node_page, 1); 797 } 798 799 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 800 { 801 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 802 803 if (inode->i_ino == F2FS_NODE_INO(sbi) || 804 inode->i_ino == F2FS_META_INO(sbi)) 805 return 0; 806 807 /* 808 * atime could be updated without dirtying f2fs inode in lazytime mode 809 */ 810 if (f2fs_is_time_consistent(inode) && 811 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 812 return 0; 813 814 if (!f2fs_is_checkpoint_ready(sbi)) 815 return -ENOSPC; 816 817 /* 818 * We need to balance fs here to prevent from producing dirty node pages 819 * during the urgent cleaning time when running out of free sections. 820 */ 821 f2fs_update_inode_page(inode); 822 if (wbc && wbc->nr_to_write) 823 f2fs_balance_fs(sbi, true); 824 return 0; 825 } 826 827 /* 828 * Called at the last iput() if i_nlink is zero 829 */ 830 void f2fs_evict_inode(struct inode *inode) 831 { 832 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 833 struct f2fs_inode_info *fi = F2FS_I(inode); 834 nid_t xnid = fi->i_xattr_nid; 835 int err = 0; 836 837 f2fs_abort_atomic_write(inode, true); 838 839 if (fi->cow_inode) { 840 clear_inode_flag(fi->cow_inode, FI_COW_FILE); 841 iput(fi->cow_inode); 842 fi->cow_inode = NULL; 843 } 844 845 trace_f2fs_evict_inode(inode); 846 truncate_inode_pages_final(&inode->i_data); 847 848 if ((inode->i_nlink || is_bad_inode(inode)) && 849 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 850 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 851 852 if (inode->i_ino == F2FS_NODE_INO(sbi) || 853 inode->i_ino == F2FS_META_INO(sbi) || 854 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 855 goto out_clear; 856 857 f2fs_bug_on(sbi, get_dirty_pages(inode)); 858 f2fs_remove_dirty_inode(inode); 859 860 f2fs_destroy_extent_tree(inode); 861 862 if (inode->i_nlink || is_bad_inode(inode)) 863 goto no_delete; 864 865 err = f2fs_dquot_initialize(inode); 866 if (err) { 867 err = 0; 868 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 869 } 870 871 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 872 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 873 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 874 875 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 876 sb_start_intwrite(inode->i_sb); 877 set_inode_flag(inode, FI_NO_ALLOC); 878 i_size_write(inode, 0); 879 retry: 880 if (F2FS_HAS_BLOCKS(inode)) 881 err = f2fs_truncate(inode); 882 883 if (time_to_inject(sbi, FAULT_EVICT_INODE)) 884 err = -EIO; 885 886 if (!err) { 887 f2fs_lock_op(sbi); 888 err = f2fs_remove_inode_page(inode); 889 f2fs_unlock_op(sbi); 890 if (err == -ENOENT) { 891 err = 0; 892 893 /* 894 * in fuzzed image, another node may has the same 895 * block address as inode's, if it was truncated 896 * previously, truncation of inode node will fail. 897 */ 898 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 899 f2fs_warn(F2FS_I_SB(inode), 900 "f2fs_evict_inode: inconsistent node id, ino:%lu", 901 inode->i_ino); 902 f2fs_inode_synced(inode); 903 set_sbi_flag(sbi, SBI_NEED_FSCK); 904 } 905 } 906 } 907 908 /* give more chances, if ENOMEM case */ 909 if (err == -ENOMEM) { 910 err = 0; 911 goto retry; 912 } 913 914 if (err) { 915 f2fs_update_inode_page(inode); 916 if (dquot_initialize_needed(inode)) 917 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 918 } 919 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 920 sb_end_intwrite(inode->i_sb); 921 no_delete: 922 dquot_drop(inode); 923 924 stat_dec_inline_xattr(inode); 925 stat_dec_inline_dir(inode); 926 stat_dec_inline_inode(inode); 927 stat_dec_compr_inode(inode); 928 stat_sub_compr_blocks(inode, 929 atomic_read(&fi->i_compr_blocks)); 930 931 if (likely(!f2fs_cp_error(sbi) && 932 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 933 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 934 else 935 f2fs_inode_synced(inode); 936 937 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 938 if (inode->i_ino) 939 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 940 inode->i_ino); 941 if (xnid) 942 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 943 if (inode->i_nlink) { 944 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 945 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 946 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 947 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 948 } 949 if (is_inode_flag_set(inode, FI_FREE_NID)) { 950 f2fs_alloc_nid_failed(sbi, inode->i_ino); 951 clear_inode_flag(inode, FI_FREE_NID); 952 } else { 953 /* 954 * If xattr nid is corrupted, we can reach out error condition, 955 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 956 * In that case, f2fs_check_nid_range() is enough to give a clue. 957 */ 958 } 959 out_clear: 960 fscrypt_put_encryption_info(inode); 961 fsverity_cleanup_inode(inode); 962 clear_inode(inode); 963 } 964 965 /* caller should call f2fs_lock_op() */ 966 void f2fs_handle_failed_inode(struct inode *inode) 967 { 968 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 969 struct node_info ni; 970 int err; 971 972 /* 973 * clear nlink of inode in order to release resource of inode 974 * immediately. 975 */ 976 clear_nlink(inode); 977 978 /* 979 * we must call this to avoid inode being remained as dirty, resulting 980 * in a panic when flushing dirty inodes in gdirty_list. 981 */ 982 f2fs_update_inode_page(inode); 983 f2fs_inode_synced(inode); 984 985 /* don't make bad inode, since it becomes a regular file. */ 986 unlock_new_inode(inode); 987 988 /* 989 * Note: we should add inode to orphan list before f2fs_unlock_op() 990 * so we can prevent losing this orphan when encoutering checkpoint 991 * and following suddenly power-off. 992 */ 993 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 994 if (err) { 995 set_sbi_flag(sbi, SBI_NEED_FSCK); 996 set_inode_flag(inode, FI_FREE_NID); 997 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 998 goto out; 999 } 1000 1001 if (ni.blk_addr != NULL_ADDR) { 1002 err = f2fs_acquire_orphan_inode(sbi); 1003 if (err) { 1004 set_sbi_flag(sbi, SBI_NEED_FSCK); 1005 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 1006 } else { 1007 f2fs_add_orphan_inode(inode); 1008 } 1009 f2fs_alloc_nid_done(sbi, inode->i_ino); 1010 } else { 1011 set_inode_flag(inode, FI_FREE_NID); 1012 } 1013 1014 out: 1015 f2fs_unlock_op(sbi); 1016 1017 /* iput will drop the inode object */ 1018 iput(inode); 1019 } 1020