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 goto err; 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 goto err; 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 goto err; 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 err: 277 set_sbi_flag(sbi, SBI_NEED_FSCK); 278 return false; 279 } 280 281 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 282 { 283 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 284 struct f2fs_inode_info *fi = F2FS_I(inode); 285 struct f2fs_inode *ri = F2FS_INODE(node_page); 286 unsigned long long iblocks; 287 288 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 289 if (!iblocks) { 290 set_sbi_flag(sbi, SBI_NEED_FSCK); 291 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 292 __func__, inode->i_ino, iblocks); 293 return false; 294 } 295 296 if (ino_of_node(node_page) != nid_of_node(node_page)) { 297 set_sbi_flag(sbi, SBI_NEED_FSCK); 298 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 299 __func__, inode->i_ino, 300 ino_of_node(node_page), nid_of_node(node_page)); 301 return false; 302 } 303 304 if (f2fs_has_extra_attr(inode)) { 305 if (!f2fs_sb_has_extra_attr(sbi)) { 306 set_sbi_flag(sbi, SBI_NEED_FSCK); 307 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 308 __func__, inode->i_ino); 309 return false; 310 } 311 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 312 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || 313 fi->i_extra_isize % sizeof(__le32)) { 314 set_sbi_flag(sbi, SBI_NEED_FSCK); 315 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 316 __func__, inode->i_ino, fi->i_extra_isize, 317 F2FS_TOTAL_EXTRA_ATTR_SIZE); 318 return false; 319 } 320 if (f2fs_sb_has_flexible_inline_xattr(sbi) && 321 f2fs_has_inline_xattr(inode) && 322 (!fi->i_inline_xattr_size || 323 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 324 set_sbi_flag(sbi, SBI_NEED_FSCK); 325 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", 326 __func__, inode->i_ino, fi->i_inline_xattr_size, 327 MAX_INLINE_XATTR_SIZE); 328 return false; 329 } 330 if (f2fs_sb_has_compression(sbi) && 331 fi->i_flags & F2FS_COMPR_FL && 332 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 333 i_compress_flag)) { 334 if (!sanity_check_compress_inode(inode, ri)) 335 return false; 336 } 337 } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 338 set_sbi_flag(sbi, SBI_NEED_FSCK); 339 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", 340 __func__, inode->i_ino); 341 return false; 342 } 343 344 if (!f2fs_sb_has_extra_attr(sbi)) { 345 if (f2fs_sb_has_project_quota(sbi)) { 346 set_sbi_flag(sbi, SBI_NEED_FSCK); 347 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 348 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA); 349 return false; 350 } 351 if (f2fs_sb_has_inode_chksum(sbi)) { 352 set_sbi_flag(sbi, SBI_NEED_FSCK); 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_CHKSUM); 355 return false; 356 } 357 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 358 set_sbi_flag(sbi, SBI_NEED_FSCK); 359 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 360 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); 361 return false; 362 } 363 if (f2fs_sb_has_inode_crtime(sbi)) { 364 set_sbi_flag(sbi, SBI_NEED_FSCK); 365 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 366 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); 367 return false; 368 } 369 if (f2fs_sb_has_compression(sbi)) { 370 set_sbi_flag(sbi, SBI_NEED_FSCK); 371 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", 372 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); 373 return false; 374 } 375 } 376 377 if (f2fs_sanity_check_inline_data(inode)) { 378 set_sbi_flag(sbi, SBI_NEED_FSCK); 379 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 380 __func__, inode->i_ino, inode->i_mode); 381 return false; 382 } 383 384 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 385 set_sbi_flag(sbi, SBI_NEED_FSCK); 386 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 387 __func__, inode->i_ino, inode->i_mode); 388 return false; 389 } 390 391 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 392 set_sbi_flag(sbi, SBI_NEED_FSCK); 393 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 394 __func__, inode->i_ino); 395 return false; 396 } 397 398 return true; 399 } 400 401 static void init_idisk_time(struct inode *inode) 402 { 403 struct f2fs_inode_info *fi = F2FS_I(inode); 404 405 fi->i_disk_time[0] = inode->i_atime; 406 fi->i_disk_time[1] = inode->i_ctime; 407 fi->i_disk_time[2] = inode->i_mtime; 408 } 409 410 static int do_read_inode(struct inode *inode) 411 { 412 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 413 struct f2fs_inode_info *fi = F2FS_I(inode); 414 struct page *node_page; 415 struct f2fs_inode *ri; 416 projid_t i_projid; 417 int err; 418 419 /* Check if ino is within scope */ 420 if (f2fs_check_nid_range(sbi, inode->i_ino)) 421 return -EINVAL; 422 423 node_page = f2fs_get_node_page(sbi, inode->i_ino); 424 if (IS_ERR(node_page)) 425 return PTR_ERR(node_page); 426 427 ri = F2FS_INODE(node_page); 428 429 inode->i_mode = le16_to_cpu(ri->i_mode); 430 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 431 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 432 set_nlink(inode, le32_to_cpu(ri->i_links)); 433 inode->i_size = le64_to_cpu(ri->i_size); 434 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 435 436 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 437 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); 438 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 439 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 440 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); 441 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 442 inode->i_generation = le32_to_cpu(ri->i_generation); 443 if (S_ISDIR(inode->i_mode)) 444 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 445 else if (S_ISREG(inode->i_mode)) 446 fi->i_gc_failures[GC_FAILURE_PIN] = 447 le16_to_cpu(ri->i_gc_failures); 448 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 449 fi->i_flags = le32_to_cpu(ri->i_flags); 450 if (S_ISREG(inode->i_mode)) 451 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 452 bitmap_zero(fi->flags, FI_MAX); 453 fi->i_advise = ri->i_advise; 454 fi->i_pino = le32_to_cpu(ri->i_pino); 455 fi->i_dir_level = ri->i_dir_level; 456 457 get_inline_info(inode, ri); 458 459 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 460 le16_to_cpu(ri->i_extra_isize) : 0; 461 462 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 463 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 464 } else if (f2fs_has_inline_xattr(inode) || 465 f2fs_has_inline_dentry(inode)) { 466 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 467 } else { 468 469 /* 470 * Previous inline data or directory always reserved 200 bytes 471 * in inode layout, even if inline_xattr is disabled. In order 472 * to keep inline_dentry's structure for backward compatibility, 473 * we get the space back only from inline_data. 474 */ 475 fi->i_inline_xattr_size = 0; 476 } 477 478 /* check data exist */ 479 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 480 __recover_inline_status(inode, node_page); 481 482 /* try to recover cold bit for non-dir inode */ 483 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 484 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 485 set_cold_node(node_page, false); 486 set_page_dirty(node_page); 487 } 488 489 /* get rdev by using inline_info */ 490 __get_inode_rdev(inode, ri); 491 492 if (S_ISREG(inode->i_mode)) { 493 err = __written_first_block(sbi, ri); 494 if (err < 0) { 495 f2fs_put_page(node_page, 1); 496 return err; 497 } 498 if (!err) 499 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 500 } 501 502 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 503 fi->last_disk_size = inode->i_size; 504 505 if (fi->i_flags & F2FS_PROJINHERIT_FL) 506 set_inode_flag(inode, FI_PROJ_INHERIT); 507 508 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 509 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 510 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 511 else 512 i_projid = F2FS_DEF_PROJID; 513 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 514 515 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 516 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 517 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 518 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 519 } 520 521 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 522 (fi->i_flags & F2FS_COMPR_FL)) { 523 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 524 i_compress_flag)) { 525 unsigned short compress_flag; 526 527 atomic_set(&fi->i_compr_blocks, 528 le64_to_cpu(ri->i_compr_blocks)); 529 fi->i_compress_algorithm = ri->i_compress_algorithm; 530 fi->i_log_cluster_size = ri->i_log_cluster_size; 531 compress_flag = le16_to_cpu(ri->i_compress_flag); 532 fi->i_compress_level = compress_flag >> 533 COMPRESS_LEVEL_OFFSET; 534 fi->i_compress_flag = compress_flag & 535 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); 536 fi->i_cluster_size = BIT(fi->i_log_cluster_size); 537 set_inode_flag(inode, FI_COMPRESSED_FILE); 538 } 539 } 540 541 init_idisk_time(inode); 542 543 /* Need all the flag bits */ 544 f2fs_init_read_extent_tree(inode, node_page); 545 f2fs_init_age_extent_tree(inode); 546 547 if (!sanity_check_inode(inode, node_page)) { 548 f2fs_put_page(node_page, 1); 549 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 550 return -EFSCORRUPTED; 551 } 552 553 if (!sanity_check_extent_cache(inode)) { 554 f2fs_put_page(node_page, 1); 555 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 556 return -EFSCORRUPTED; 557 } 558 559 f2fs_put_page(node_page, 1); 560 561 stat_inc_inline_xattr(inode); 562 stat_inc_inline_inode(inode); 563 stat_inc_inline_dir(inode); 564 stat_inc_compr_inode(inode); 565 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 566 567 return 0; 568 } 569 570 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 571 { 572 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 573 ino == F2FS_COMPRESS_INO(sbi); 574 } 575 576 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 577 { 578 struct f2fs_sb_info *sbi = F2FS_SB(sb); 579 struct inode *inode; 580 int ret = 0; 581 582 inode = iget_locked(sb, ino); 583 if (!inode) 584 return ERR_PTR(-ENOMEM); 585 586 if (!(inode->i_state & I_NEW)) { 587 if (is_meta_ino(sbi, ino)) { 588 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 589 set_sbi_flag(sbi, SBI_NEED_FSCK); 590 ret = -EFSCORRUPTED; 591 trace_f2fs_iget_exit(inode, ret); 592 iput(inode); 593 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 594 return ERR_PTR(ret); 595 } 596 597 trace_f2fs_iget(inode); 598 return inode; 599 } 600 601 if (is_meta_ino(sbi, ino)) 602 goto make_now; 603 604 ret = do_read_inode(inode); 605 if (ret) 606 goto bad_inode; 607 make_now: 608 if (ino == F2FS_NODE_INO(sbi)) { 609 inode->i_mapping->a_ops = &f2fs_node_aops; 610 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 611 } else if (ino == F2FS_META_INO(sbi)) { 612 inode->i_mapping->a_ops = &f2fs_meta_aops; 613 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 614 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 615 #ifdef CONFIG_F2FS_FS_COMPRESSION 616 inode->i_mapping->a_ops = &f2fs_compress_aops; 617 /* 618 * generic_error_remove_page only truncates pages of regular 619 * inode 620 */ 621 inode->i_mode |= S_IFREG; 622 #endif 623 mapping_set_gfp_mask(inode->i_mapping, 624 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 625 } else if (S_ISREG(inode->i_mode)) { 626 inode->i_op = &f2fs_file_inode_operations; 627 inode->i_fop = &f2fs_file_operations; 628 inode->i_mapping->a_ops = &f2fs_dblock_aops; 629 } else if (S_ISDIR(inode->i_mode)) { 630 inode->i_op = &f2fs_dir_inode_operations; 631 inode->i_fop = &f2fs_dir_operations; 632 inode->i_mapping->a_ops = &f2fs_dblock_aops; 633 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 634 } else if (S_ISLNK(inode->i_mode)) { 635 if (file_is_encrypt(inode)) 636 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 637 else 638 inode->i_op = &f2fs_symlink_inode_operations; 639 inode_nohighmem(inode); 640 inode->i_mapping->a_ops = &f2fs_dblock_aops; 641 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 642 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 643 inode->i_op = &f2fs_special_inode_operations; 644 init_special_inode(inode, inode->i_mode, inode->i_rdev); 645 } else { 646 ret = -EIO; 647 goto bad_inode; 648 } 649 f2fs_set_inode_flags(inode); 650 651 if (file_should_truncate(inode) && 652 !is_sbi_flag_set(sbi, SBI_POR_DOING)) { 653 ret = f2fs_truncate(inode); 654 if (ret) 655 goto bad_inode; 656 file_dont_truncate(inode); 657 } 658 659 unlock_new_inode(inode); 660 trace_f2fs_iget(inode); 661 return inode; 662 663 bad_inode: 664 f2fs_inode_synced(inode); 665 iget_failed(inode); 666 trace_f2fs_iget_exit(inode, ret); 667 return ERR_PTR(ret); 668 } 669 670 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 671 { 672 struct inode *inode; 673 retry: 674 inode = f2fs_iget(sb, ino); 675 if (IS_ERR(inode)) { 676 if (PTR_ERR(inode) == -ENOMEM) { 677 memalloc_retry_wait(GFP_NOFS); 678 goto retry; 679 } 680 } 681 return inode; 682 } 683 684 void f2fs_update_inode(struct inode *inode, struct page *node_page) 685 { 686 struct f2fs_inode *ri; 687 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ]; 688 689 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 690 set_page_dirty(node_page); 691 692 f2fs_inode_synced(inode); 693 694 ri = F2FS_INODE(node_page); 695 696 ri->i_mode = cpu_to_le16(inode->i_mode); 697 ri->i_advise = F2FS_I(inode)->i_advise; 698 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 699 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 700 ri->i_links = cpu_to_le32(inode->i_nlink); 701 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 702 703 if (!f2fs_is_atomic_file(inode) || 704 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) 705 ri->i_size = cpu_to_le64(i_size_read(inode)); 706 707 if (et) { 708 read_lock(&et->lock); 709 set_raw_read_extent(&et->largest, &ri->i_ext); 710 read_unlock(&et->lock); 711 } else { 712 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 713 } 714 set_raw_inline(inode, ri); 715 716 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 717 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); 718 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 719 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 720 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); 721 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 722 if (S_ISDIR(inode->i_mode)) 723 ri->i_current_depth = 724 cpu_to_le32(F2FS_I(inode)->i_current_depth); 725 else if (S_ISREG(inode->i_mode)) 726 ri->i_gc_failures = 727 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); 728 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 729 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 730 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 731 ri->i_generation = cpu_to_le32(inode->i_generation); 732 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 733 734 if (f2fs_has_extra_attr(inode)) { 735 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 736 737 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 738 ri->i_inline_xattr_size = 739 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 740 741 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 742 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 743 i_projid)) { 744 projid_t i_projid; 745 746 i_projid = from_kprojid(&init_user_ns, 747 F2FS_I(inode)->i_projid); 748 ri->i_projid = cpu_to_le32(i_projid); 749 } 750 751 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 752 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 753 i_crtime)) { 754 ri->i_crtime = 755 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 756 ri->i_crtime_nsec = 757 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 758 } 759 760 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 761 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 762 i_compress_flag)) { 763 unsigned short compress_flag; 764 765 ri->i_compr_blocks = 766 cpu_to_le64(atomic_read( 767 &F2FS_I(inode)->i_compr_blocks)); 768 ri->i_compress_algorithm = 769 F2FS_I(inode)->i_compress_algorithm; 770 compress_flag = F2FS_I(inode)->i_compress_flag | 771 F2FS_I(inode)->i_compress_level << 772 COMPRESS_LEVEL_OFFSET; 773 ri->i_compress_flag = cpu_to_le16(compress_flag); 774 ri->i_log_cluster_size = 775 F2FS_I(inode)->i_log_cluster_size; 776 } 777 } 778 779 __set_inode_rdev(inode, ri); 780 781 /* deleted inode */ 782 if (inode->i_nlink == 0) 783 clear_page_private_inline(node_page); 784 785 init_idisk_time(inode); 786 #ifdef CONFIG_F2FS_CHECK_FS 787 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 788 #endif 789 } 790 791 void f2fs_update_inode_page(struct inode *inode) 792 { 793 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 794 struct page *node_page; 795 int count = 0; 796 retry: 797 node_page = f2fs_get_node_page(sbi, inode->i_ino); 798 if (IS_ERR(node_page)) { 799 int err = PTR_ERR(node_page); 800 801 /* The node block was truncated. */ 802 if (err == -ENOENT) 803 return; 804 805 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT) 806 goto retry; 807 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE); 808 return; 809 } 810 f2fs_update_inode(inode, node_page); 811 f2fs_put_page(node_page, 1); 812 } 813 814 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 815 { 816 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 817 818 if (inode->i_ino == F2FS_NODE_INO(sbi) || 819 inode->i_ino == F2FS_META_INO(sbi)) 820 return 0; 821 822 /* 823 * atime could be updated without dirtying f2fs inode in lazytime mode 824 */ 825 if (f2fs_is_time_consistent(inode) && 826 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 827 return 0; 828 829 if (!f2fs_is_checkpoint_ready(sbi)) 830 return -ENOSPC; 831 832 /* 833 * We need to balance fs here to prevent from producing dirty node pages 834 * during the urgent cleaning time when running out of free sections. 835 */ 836 f2fs_update_inode_page(inode); 837 if (wbc && wbc->nr_to_write) 838 f2fs_balance_fs(sbi, true); 839 return 0; 840 } 841 842 /* 843 * Called at the last iput() if i_nlink is zero 844 */ 845 void f2fs_evict_inode(struct inode *inode) 846 { 847 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 848 struct f2fs_inode_info *fi = F2FS_I(inode); 849 nid_t xnid = fi->i_xattr_nid; 850 int err = 0; 851 852 f2fs_abort_atomic_write(inode, true); 853 854 if (fi->cow_inode) { 855 clear_inode_flag(fi->cow_inode, FI_COW_FILE); 856 iput(fi->cow_inode); 857 fi->cow_inode = NULL; 858 } 859 860 trace_f2fs_evict_inode(inode); 861 truncate_inode_pages_final(&inode->i_data); 862 863 if ((inode->i_nlink || is_bad_inode(inode)) && 864 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 865 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 866 867 if (inode->i_ino == F2FS_NODE_INO(sbi) || 868 inode->i_ino == F2FS_META_INO(sbi) || 869 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 870 goto out_clear; 871 872 f2fs_bug_on(sbi, get_dirty_pages(inode)); 873 f2fs_remove_dirty_inode(inode); 874 875 f2fs_destroy_extent_tree(inode); 876 877 if (inode->i_nlink || is_bad_inode(inode)) 878 goto no_delete; 879 880 err = f2fs_dquot_initialize(inode); 881 if (err) { 882 err = 0; 883 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 884 } 885 886 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 887 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 888 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 889 890 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 891 sb_start_intwrite(inode->i_sb); 892 set_inode_flag(inode, FI_NO_ALLOC); 893 i_size_write(inode, 0); 894 retry: 895 if (F2FS_HAS_BLOCKS(inode)) 896 err = f2fs_truncate(inode); 897 898 if (time_to_inject(sbi, FAULT_EVICT_INODE)) 899 err = -EIO; 900 901 if (!err) { 902 f2fs_lock_op(sbi); 903 err = f2fs_remove_inode_page(inode); 904 f2fs_unlock_op(sbi); 905 if (err == -ENOENT) { 906 err = 0; 907 908 /* 909 * in fuzzed image, another node may has the same 910 * block address as inode's, if it was truncated 911 * previously, truncation of inode node will fail. 912 */ 913 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 914 f2fs_warn(F2FS_I_SB(inode), 915 "f2fs_evict_inode: inconsistent node id, ino:%lu", 916 inode->i_ino); 917 f2fs_inode_synced(inode); 918 set_sbi_flag(sbi, SBI_NEED_FSCK); 919 } 920 } 921 } 922 923 /* give more chances, if ENOMEM case */ 924 if (err == -ENOMEM) { 925 err = 0; 926 goto retry; 927 } 928 929 if (err) { 930 f2fs_update_inode_page(inode); 931 if (dquot_initialize_needed(inode)) 932 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 933 } 934 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 935 sb_end_intwrite(inode->i_sb); 936 no_delete: 937 dquot_drop(inode); 938 939 stat_dec_inline_xattr(inode); 940 stat_dec_inline_dir(inode); 941 stat_dec_inline_inode(inode); 942 stat_dec_compr_inode(inode); 943 stat_sub_compr_blocks(inode, 944 atomic_read(&fi->i_compr_blocks)); 945 946 if (likely(!f2fs_cp_error(sbi) && 947 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 948 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 949 else 950 f2fs_inode_synced(inode); 951 952 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 953 if (inode->i_ino) 954 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 955 inode->i_ino); 956 if (xnid) 957 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 958 if (inode->i_nlink) { 959 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 960 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 961 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 962 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 963 } 964 if (is_inode_flag_set(inode, FI_FREE_NID)) { 965 f2fs_alloc_nid_failed(sbi, inode->i_ino); 966 clear_inode_flag(inode, FI_FREE_NID); 967 } else { 968 /* 969 * If xattr nid is corrupted, we can reach out error condition, 970 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 971 * In that case, f2fs_check_nid_range() is enough to give a clue. 972 */ 973 } 974 out_clear: 975 fscrypt_put_encryption_info(inode); 976 fsverity_cleanup_inode(inode); 977 clear_inode(inode); 978 } 979 980 /* caller should call f2fs_lock_op() */ 981 void f2fs_handle_failed_inode(struct inode *inode) 982 { 983 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 984 struct node_info ni; 985 int err; 986 987 /* 988 * clear nlink of inode in order to release resource of inode 989 * immediately. 990 */ 991 clear_nlink(inode); 992 993 /* 994 * we must call this to avoid inode being remained as dirty, resulting 995 * in a panic when flushing dirty inodes in gdirty_list. 996 */ 997 f2fs_update_inode_page(inode); 998 f2fs_inode_synced(inode); 999 1000 /* don't make bad inode, since it becomes a regular file. */ 1001 unlock_new_inode(inode); 1002 1003 /* 1004 * Note: we should add inode to orphan list before f2fs_unlock_op() 1005 * so we can prevent losing this orphan when encoutering checkpoint 1006 * and following suddenly power-off. 1007 */ 1008 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 1009 if (err) { 1010 set_sbi_flag(sbi, SBI_NEED_FSCK); 1011 set_inode_flag(inode, FI_FREE_NID); 1012 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 1013 goto out; 1014 } 1015 1016 if (ni.blk_addr != NULL_ADDR) { 1017 err = f2fs_acquire_orphan_inode(sbi); 1018 if (err) { 1019 set_sbi_flag(sbi, SBI_NEED_FSCK); 1020 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 1021 } else { 1022 f2fs_add_orphan_inode(inode); 1023 } 1024 f2fs_alloc_nid_done(sbi, inode->i_ino); 1025 } else { 1026 set_inode_flag(inode, FI_FREE_NID); 1027 } 1028 1029 out: 1030 f2fs_unlock_op(sbi); 1031 1032 /* iput will drop the inode object */ 1033 iput(inode); 1034 } 1035