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 14 #include "f2fs.h" 15 #include "node.h" 16 #include "segment.h" 17 #include "xattr.h" 18 19 #include <trace/events/f2fs.h> 20 21 #ifdef CONFIG_F2FS_FS_COMPRESSION 22 extern const struct address_space_operations f2fs_compress_aops; 23 #endif 24 25 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync) 26 { 27 if (is_inode_flag_set(inode, FI_NEW_INODE)) 28 return; 29 30 if (f2fs_inode_dirtied(inode, sync)) 31 return; 32 33 mark_inode_dirty_sync(inode); 34 } 35 36 void f2fs_set_inode_flags(struct inode *inode) 37 { 38 unsigned int flags = F2FS_I(inode)->i_flags; 39 unsigned int new_fl = 0; 40 41 if (flags & F2FS_SYNC_FL) 42 new_fl |= S_SYNC; 43 if (flags & F2FS_APPEND_FL) 44 new_fl |= S_APPEND; 45 if (flags & F2FS_IMMUTABLE_FL) 46 new_fl |= S_IMMUTABLE; 47 if (flags & F2FS_NOATIME_FL) 48 new_fl |= S_NOATIME; 49 if (flags & F2FS_DIRSYNC_FL) 50 new_fl |= S_DIRSYNC; 51 if (file_is_encrypt(inode)) 52 new_fl |= S_ENCRYPTED; 53 if (file_is_verity(inode)) 54 new_fl |= S_VERITY; 55 if (flags & F2FS_CASEFOLD_FL) 56 new_fl |= S_CASEFOLD; 57 inode_set_flags(inode, new_fl, 58 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC| 59 S_ENCRYPTED|S_VERITY|S_CASEFOLD); 60 } 61 62 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) 63 { 64 int extra_size = get_extra_isize(inode); 65 66 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 67 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 68 if (ri->i_addr[extra_size]) 69 inode->i_rdev = old_decode_dev( 70 le32_to_cpu(ri->i_addr[extra_size])); 71 else 72 inode->i_rdev = new_decode_dev( 73 le32_to_cpu(ri->i_addr[extra_size + 1])); 74 } 75 } 76 77 static int __written_first_block(struct f2fs_sb_info *sbi, 78 struct f2fs_inode *ri) 79 { 80 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]); 81 82 if (!__is_valid_data_blkaddr(addr)) 83 return 1; 84 if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE)) { 85 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); 86 return -EFSCORRUPTED; 87 } 88 return 0; 89 } 90 91 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) 92 { 93 int extra_size = get_extra_isize(inode); 94 95 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 96 if (old_valid_dev(inode->i_rdev)) { 97 ri->i_addr[extra_size] = 98 cpu_to_le32(old_encode_dev(inode->i_rdev)); 99 ri->i_addr[extra_size + 1] = 0; 100 } else { 101 ri->i_addr[extra_size] = 0; 102 ri->i_addr[extra_size + 1] = 103 cpu_to_le32(new_encode_dev(inode->i_rdev)); 104 ri->i_addr[extra_size + 2] = 0; 105 } 106 } 107 } 108 109 static void __recover_inline_status(struct inode *inode, struct page *ipage) 110 { 111 void *inline_data = inline_data_addr(inode, ipage); 112 __le32 *start = inline_data; 113 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 114 115 while (start < end) { 116 if (*start++) { 117 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 118 119 set_inode_flag(inode, FI_DATA_EXIST); 120 set_raw_inline(inode, F2FS_INODE(ipage)); 121 set_page_dirty(ipage); 122 return; 123 } 124 } 125 return; 126 } 127 128 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 129 { 130 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 131 132 if (!f2fs_sb_has_inode_chksum(sbi)) 133 return false; 134 135 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 136 return false; 137 138 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), 139 i_inode_checksum)) 140 return false; 141 142 return true; 143 } 144 145 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 146 { 147 struct f2fs_node *node = F2FS_NODE(page); 148 struct f2fs_inode *ri = &node->i; 149 __le32 ino = node->footer.ino; 150 __le32 gen = ri->i_generation; 151 __u32 chksum, chksum_seed; 152 __u32 dummy_cs = 0; 153 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 154 unsigned int cs_size = sizeof(dummy_cs); 155 156 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 157 sizeof(ino)); 158 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 159 160 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 161 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 162 offset += cs_size; 163 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 164 F2FS_BLKSIZE - offset); 165 return chksum; 166 } 167 168 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 169 { 170 struct f2fs_inode *ri; 171 __u32 provided, calculated; 172 173 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) 174 return true; 175 176 #ifdef CONFIG_F2FS_CHECK_FS 177 if (!f2fs_enable_inode_chksum(sbi, page)) 178 #else 179 if (!f2fs_enable_inode_chksum(sbi, page) || 180 PageDirty(page) || PageWriteback(page)) 181 #endif 182 return true; 183 184 ri = &F2FS_NODE(page)->i; 185 provided = le32_to_cpu(ri->i_inode_checksum); 186 calculated = f2fs_inode_chksum(sbi, page); 187 188 if (provided != calculated) 189 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", 190 page->index, ino_of_node(page), provided, calculated); 191 192 return provided == calculated; 193 } 194 195 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 196 { 197 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 198 199 if (!f2fs_enable_inode_chksum(sbi, page)) 200 return; 201 202 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 203 } 204 205 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 206 { 207 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 208 struct f2fs_inode_info *fi = F2FS_I(inode); 209 struct f2fs_inode *ri = F2FS_INODE(node_page); 210 unsigned long long iblocks; 211 212 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 213 if (!iblocks) { 214 set_sbi_flag(sbi, SBI_NEED_FSCK); 215 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 216 __func__, inode->i_ino, iblocks); 217 return false; 218 } 219 220 if (ino_of_node(node_page) != nid_of_node(node_page)) { 221 set_sbi_flag(sbi, SBI_NEED_FSCK); 222 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 223 __func__, inode->i_ino, 224 ino_of_node(node_page), nid_of_node(node_page)); 225 return false; 226 } 227 228 if (f2fs_sb_has_flexible_inline_xattr(sbi) 229 && !f2fs_has_extra_attr(inode)) { 230 set_sbi_flag(sbi, SBI_NEED_FSCK); 231 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", 232 __func__, inode->i_ino); 233 return false; 234 } 235 236 if (f2fs_has_extra_attr(inode) && 237 !f2fs_sb_has_extra_attr(sbi)) { 238 set_sbi_flag(sbi, SBI_NEED_FSCK); 239 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 240 __func__, inode->i_ino); 241 return false; 242 } 243 244 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 245 fi->i_extra_isize % sizeof(__le32)) { 246 set_sbi_flag(sbi, SBI_NEED_FSCK); 247 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 248 __func__, inode->i_ino, fi->i_extra_isize, 249 F2FS_TOTAL_EXTRA_ATTR_SIZE); 250 return false; 251 } 252 253 if (f2fs_has_extra_attr(inode) && 254 f2fs_sb_has_flexible_inline_xattr(sbi) && 255 f2fs_has_inline_xattr(inode) && 256 (!fi->i_inline_xattr_size || 257 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 258 set_sbi_flag(sbi, SBI_NEED_FSCK); 259 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", 260 __func__, inode->i_ino, fi->i_inline_xattr_size, 261 MAX_INLINE_XATTR_SIZE); 262 return false; 263 } 264 265 if (fi->extent_tree[EX_READ]) { 266 struct extent_info *ei = &fi->extent_tree[EX_READ]->largest; 267 268 if (ei->len && 269 (!f2fs_is_valid_blkaddr(sbi, ei->blk, 270 DATA_GENERIC_ENHANCE) || 271 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1, 272 DATA_GENERIC_ENHANCE))) { 273 set_sbi_flag(sbi, SBI_NEED_FSCK); 274 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix", 275 __func__, inode->i_ino, 276 ei->blk, ei->fofs, ei->len); 277 return false; 278 } 279 } 280 281 if (f2fs_sanity_check_inline_data(inode)) { 282 set_sbi_flag(sbi, SBI_NEED_FSCK); 283 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 284 __func__, inode->i_ino, inode->i_mode); 285 return false; 286 } 287 288 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 289 set_sbi_flag(sbi, SBI_NEED_FSCK); 290 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 291 __func__, inode->i_ino, inode->i_mode); 292 return false; 293 } 294 295 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 296 set_sbi_flag(sbi, SBI_NEED_FSCK); 297 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 298 __func__, inode->i_ino); 299 return false; 300 } 301 302 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 303 fi->i_flags & F2FS_COMPR_FL && 304 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 305 i_log_cluster_size)) { 306 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 307 set_sbi_flag(sbi, SBI_NEED_FSCK); 308 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported " 309 "compress algorithm: %u, run fsck to fix", 310 __func__, inode->i_ino, 311 ri->i_compress_algorithm); 312 return false; 313 } 314 if (le64_to_cpu(ri->i_compr_blocks) > 315 SECTOR_TO_BLOCK(inode->i_blocks)) { 316 set_sbi_flag(sbi, SBI_NEED_FSCK); 317 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent " 318 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 319 __func__, inode->i_ino, 320 le64_to_cpu(ri->i_compr_blocks), 321 SECTOR_TO_BLOCK(inode->i_blocks)); 322 return false; 323 } 324 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 325 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 326 set_sbi_flag(sbi, SBI_NEED_FSCK); 327 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported " 328 "log cluster size: %u, run fsck to fix", 329 __func__, inode->i_ino, 330 ri->i_log_cluster_size); 331 return false; 332 } 333 } 334 335 return true; 336 } 337 338 static void init_idisk_time(struct inode *inode) 339 { 340 struct f2fs_inode_info *fi = F2FS_I(inode); 341 342 fi->i_disk_time[0] = inode->i_atime; 343 fi->i_disk_time[1] = inode->i_ctime; 344 fi->i_disk_time[2] = inode->i_mtime; 345 fi->i_disk_time[3] = fi->i_crtime; 346 } 347 348 static int do_read_inode(struct inode *inode) 349 { 350 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 351 struct f2fs_inode_info *fi = F2FS_I(inode); 352 struct page *node_page; 353 struct f2fs_inode *ri; 354 projid_t i_projid; 355 int err; 356 357 /* Check if ino is within scope */ 358 if (f2fs_check_nid_range(sbi, inode->i_ino)) 359 return -EINVAL; 360 361 node_page = f2fs_get_node_page(sbi, inode->i_ino); 362 if (IS_ERR(node_page)) 363 return PTR_ERR(node_page); 364 365 ri = F2FS_INODE(node_page); 366 367 inode->i_mode = le16_to_cpu(ri->i_mode); 368 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 369 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 370 set_nlink(inode, le32_to_cpu(ri->i_links)); 371 inode->i_size = le64_to_cpu(ri->i_size); 372 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 373 374 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 375 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); 376 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 377 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 378 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); 379 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 380 inode->i_generation = le32_to_cpu(ri->i_generation); 381 if (S_ISDIR(inode->i_mode)) 382 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 383 else if (S_ISREG(inode->i_mode)) 384 fi->i_gc_failures[GC_FAILURE_PIN] = 385 le16_to_cpu(ri->i_gc_failures); 386 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 387 fi->i_flags = le32_to_cpu(ri->i_flags); 388 if (S_ISREG(inode->i_mode)) 389 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 390 bitmap_zero(fi->flags, FI_MAX); 391 fi->i_advise = ri->i_advise; 392 fi->i_pino = le32_to_cpu(ri->i_pino); 393 fi->i_dir_level = ri->i_dir_level; 394 395 get_inline_info(inode, ri); 396 397 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 398 le16_to_cpu(ri->i_extra_isize) : 0; 399 400 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 401 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 402 } else if (f2fs_has_inline_xattr(inode) || 403 f2fs_has_inline_dentry(inode)) { 404 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 405 } else { 406 407 /* 408 * Previous inline data or directory always reserved 200 bytes 409 * in inode layout, even if inline_xattr is disabled. In order 410 * to keep inline_dentry's structure for backward compatibility, 411 * we get the space back only from inline_data. 412 */ 413 fi->i_inline_xattr_size = 0; 414 } 415 416 if (!sanity_check_inode(inode, node_page)) { 417 f2fs_put_page(node_page, 1); 418 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 419 return -EFSCORRUPTED; 420 } 421 422 /* check data exist */ 423 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 424 __recover_inline_status(inode, node_page); 425 426 /* try to recover cold bit for non-dir inode */ 427 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 428 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 429 set_cold_node(node_page, false); 430 set_page_dirty(node_page); 431 } 432 433 /* get rdev by using inline_info */ 434 __get_inode_rdev(inode, ri); 435 436 if (S_ISREG(inode->i_mode)) { 437 err = __written_first_block(sbi, ri); 438 if (err < 0) { 439 f2fs_put_page(node_page, 1); 440 return err; 441 } 442 if (!err) 443 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 444 } 445 446 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 447 fi->last_disk_size = inode->i_size; 448 449 if (fi->i_flags & F2FS_PROJINHERIT_FL) 450 set_inode_flag(inode, FI_PROJ_INHERIT); 451 452 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 453 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 454 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 455 else 456 i_projid = F2FS_DEF_PROJID; 457 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 458 459 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 460 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 461 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 462 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 463 } 464 465 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 466 (fi->i_flags & F2FS_COMPR_FL)) { 467 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 468 i_log_cluster_size)) { 469 atomic_set(&fi->i_compr_blocks, 470 le64_to_cpu(ri->i_compr_blocks)); 471 fi->i_compress_algorithm = ri->i_compress_algorithm; 472 fi->i_log_cluster_size = ri->i_log_cluster_size; 473 fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag); 474 fi->i_cluster_size = 1 << fi->i_log_cluster_size; 475 set_inode_flag(inode, FI_COMPRESSED_FILE); 476 } 477 } 478 479 init_idisk_time(inode); 480 481 /* Need all the flag bits */ 482 f2fs_init_read_extent_tree(inode, node_page); 483 484 f2fs_put_page(node_page, 1); 485 486 stat_inc_inline_xattr(inode); 487 stat_inc_inline_inode(inode); 488 stat_inc_inline_dir(inode); 489 stat_inc_compr_inode(inode); 490 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 491 492 return 0; 493 } 494 495 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 496 { 497 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 498 ino == F2FS_COMPRESS_INO(sbi); 499 } 500 501 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 502 { 503 struct f2fs_sb_info *sbi = F2FS_SB(sb); 504 struct inode *inode; 505 int ret = 0; 506 507 inode = iget_locked(sb, ino); 508 if (!inode) 509 return ERR_PTR(-ENOMEM); 510 511 if (!(inode->i_state & I_NEW)) { 512 if (is_meta_ino(sbi, ino)) { 513 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 514 set_sbi_flag(sbi, SBI_NEED_FSCK); 515 ret = -EFSCORRUPTED; 516 trace_f2fs_iget_exit(inode, ret); 517 iput(inode); 518 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 519 return ERR_PTR(ret); 520 } 521 522 trace_f2fs_iget(inode); 523 return inode; 524 } 525 526 if (is_meta_ino(sbi, ino)) 527 goto make_now; 528 529 ret = do_read_inode(inode); 530 if (ret) 531 goto bad_inode; 532 make_now: 533 if (ino == F2FS_NODE_INO(sbi)) { 534 inode->i_mapping->a_ops = &f2fs_node_aops; 535 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 536 } else if (ino == F2FS_META_INO(sbi)) { 537 inode->i_mapping->a_ops = &f2fs_meta_aops; 538 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 539 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 540 #ifdef CONFIG_F2FS_FS_COMPRESSION 541 inode->i_mapping->a_ops = &f2fs_compress_aops; 542 /* 543 * generic_error_remove_page only truncates pages of regular 544 * inode 545 */ 546 inode->i_mode |= S_IFREG; 547 #endif 548 mapping_set_gfp_mask(inode->i_mapping, 549 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 550 } else if (S_ISREG(inode->i_mode)) { 551 inode->i_op = &f2fs_file_inode_operations; 552 inode->i_fop = &f2fs_file_operations; 553 inode->i_mapping->a_ops = &f2fs_dblock_aops; 554 } else if (S_ISDIR(inode->i_mode)) { 555 inode->i_op = &f2fs_dir_inode_operations; 556 inode->i_fop = &f2fs_dir_operations; 557 inode->i_mapping->a_ops = &f2fs_dblock_aops; 558 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 559 } else if (S_ISLNK(inode->i_mode)) { 560 if (file_is_encrypt(inode)) 561 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 562 else 563 inode->i_op = &f2fs_symlink_inode_operations; 564 inode_nohighmem(inode); 565 inode->i_mapping->a_ops = &f2fs_dblock_aops; 566 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 567 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 568 inode->i_op = &f2fs_special_inode_operations; 569 init_special_inode(inode, inode->i_mode, inode->i_rdev); 570 } else { 571 ret = -EIO; 572 goto bad_inode; 573 } 574 f2fs_set_inode_flags(inode); 575 576 if (file_should_truncate(inode) && 577 !is_sbi_flag_set(sbi, SBI_POR_DOING)) { 578 ret = f2fs_truncate(inode); 579 if (ret) 580 goto bad_inode; 581 file_dont_truncate(inode); 582 } 583 584 unlock_new_inode(inode); 585 trace_f2fs_iget(inode); 586 return inode; 587 588 bad_inode: 589 f2fs_inode_synced(inode); 590 iget_failed(inode); 591 trace_f2fs_iget_exit(inode, ret); 592 return ERR_PTR(ret); 593 } 594 595 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 596 { 597 struct inode *inode; 598 retry: 599 inode = f2fs_iget(sb, ino); 600 if (IS_ERR(inode)) { 601 if (PTR_ERR(inode) == -ENOMEM) { 602 memalloc_retry_wait(GFP_NOFS); 603 goto retry; 604 } 605 } 606 return inode; 607 } 608 609 void f2fs_update_inode(struct inode *inode, struct page *node_page) 610 { 611 struct f2fs_inode *ri; 612 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ]; 613 614 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 615 set_page_dirty(node_page); 616 617 f2fs_inode_synced(inode); 618 619 ri = F2FS_INODE(node_page); 620 621 ri->i_mode = cpu_to_le16(inode->i_mode); 622 ri->i_advise = F2FS_I(inode)->i_advise; 623 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 624 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 625 ri->i_links = cpu_to_le32(inode->i_nlink); 626 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 627 628 if (!f2fs_is_atomic_file(inode) || 629 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) 630 ri->i_size = cpu_to_le64(i_size_read(inode)); 631 632 if (et) { 633 read_lock(&et->lock); 634 set_raw_read_extent(&et->largest, &ri->i_ext); 635 read_unlock(&et->lock); 636 } else { 637 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 638 } 639 set_raw_inline(inode, ri); 640 641 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 642 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); 643 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 644 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 645 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); 646 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 647 if (S_ISDIR(inode->i_mode)) 648 ri->i_current_depth = 649 cpu_to_le32(F2FS_I(inode)->i_current_depth); 650 else if (S_ISREG(inode->i_mode)) 651 ri->i_gc_failures = 652 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); 653 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 654 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 655 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 656 ri->i_generation = cpu_to_le32(inode->i_generation); 657 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 658 659 if (f2fs_has_extra_attr(inode)) { 660 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 661 662 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 663 ri->i_inline_xattr_size = 664 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 665 666 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 667 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 668 i_projid)) { 669 projid_t i_projid; 670 671 i_projid = from_kprojid(&init_user_ns, 672 F2FS_I(inode)->i_projid); 673 ri->i_projid = cpu_to_le32(i_projid); 674 } 675 676 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 677 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 678 i_crtime)) { 679 ri->i_crtime = 680 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 681 ri->i_crtime_nsec = 682 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 683 } 684 685 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 686 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 687 i_log_cluster_size)) { 688 ri->i_compr_blocks = 689 cpu_to_le64(atomic_read( 690 &F2FS_I(inode)->i_compr_blocks)); 691 ri->i_compress_algorithm = 692 F2FS_I(inode)->i_compress_algorithm; 693 ri->i_compress_flag = 694 cpu_to_le16(F2FS_I(inode)->i_compress_flag); 695 ri->i_log_cluster_size = 696 F2FS_I(inode)->i_log_cluster_size; 697 } 698 } 699 700 __set_inode_rdev(inode, ri); 701 702 /* deleted inode */ 703 if (inode->i_nlink == 0) 704 clear_page_private_inline(node_page); 705 706 init_idisk_time(inode); 707 #ifdef CONFIG_F2FS_CHECK_FS 708 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 709 #endif 710 } 711 712 void f2fs_update_inode_page(struct inode *inode) 713 { 714 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 715 struct page *node_page; 716 retry: 717 node_page = f2fs_get_node_page(sbi, inode->i_ino); 718 if (IS_ERR(node_page)) { 719 int err = PTR_ERR(node_page); 720 721 if (err == -ENOMEM) { 722 cond_resched(); 723 goto retry; 724 } else if (err != -ENOENT) { 725 f2fs_stop_checkpoint(sbi, false, 726 STOP_CP_REASON_UPDATE_INODE); 727 } 728 return; 729 } 730 f2fs_update_inode(inode, node_page); 731 f2fs_put_page(node_page, 1); 732 } 733 734 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 735 { 736 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 737 738 if (inode->i_ino == F2FS_NODE_INO(sbi) || 739 inode->i_ino == F2FS_META_INO(sbi)) 740 return 0; 741 742 /* 743 * atime could be updated without dirtying f2fs inode in lazytime mode 744 */ 745 if (f2fs_is_time_consistent(inode) && 746 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 747 return 0; 748 749 if (!f2fs_is_checkpoint_ready(sbi)) 750 return -ENOSPC; 751 752 /* 753 * We need to balance fs here to prevent from producing dirty node pages 754 * during the urgent cleaning time when running out of free sections. 755 */ 756 f2fs_update_inode_page(inode); 757 if (wbc && wbc->nr_to_write) 758 f2fs_balance_fs(sbi, true); 759 return 0; 760 } 761 762 /* 763 * Called at the last iput() if i_nlink is zero 764 */ 765 void f2fs_evict_inode(struct inode *inode) 766 { 767 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 768 nid_t xnid = F2FS_I(inode)->i_xattr_nid; 769 int err = 0; 770 771 f2fs_abort_atomic_write(inode, true); 772 773 trace_f2fs_evict_inode(inode); 774 truncate_inode_pages_final(&inode->i_data); 775 776 if ((inode->i_nlink || is_bad_inode(inode)) && 777 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 778 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 779 780 if (inode->i_ino == F2FS_NODE_INO(sbi) || 781 inode->i_ino == F2FS_META_INO(sbi) || 782 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 783 goto out_clear; 784 785 f2fs_bug_on(sbi, get_dirty_pages(inode)); 786 f2fs_remove_dirty_inode(inode); 787 788 f2fs_destroy_extent_tree(inode); 789 790 if (inode->i_nlink || is_bad_inode(inode)) 791 goto no_delete; 792 793 err = f2fs_dquot_initialize(inode); 794 if (err) { 795 err = 0; 796 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 797 } 798 799 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 800 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 801 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 802 803 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 804 sb_start_intwrite(inode->i_sb); 805 set_inode_flag(inode, FI_NO_ALLOC); 806 i_size_write(inode, 0); 807 retry: 808 if (F2FS_HAS_BLOCKS(inode)) 809 err = f2fs_truncate(inode); 810 811 if (time_to_inject(sbi, FAULT_EVICT_INODE)) { 812 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE); 813 err = -EIO; 814 } 815 816 if (!err) { 817 f2fs_lock_op(sbi); 818 err = f2fs_remove_inode_page(inode); 819 f2fs_unlock_op(sbi); 820 if (err == -ENOENT) { 821 err = 0; 822 823 /* 824 * in fuzzed image, another node may has the same 825 * block address as inode's, if it was truncated 826 * previously, truncation of inode node will fail. 827 */ 828 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 829 f2fs_warn(F2FS_I_SB(inode), 830 "f2fs_evict_inode: inconsistent node id, ino:%lu", 831 inode->i_ino); 832 f2fs_inode_synced(inode); 833 set_sbi_flag(sbi, SBI_NEED_FSCK); 834 } 835 } 836 } 837 838 /* give more chances, if ENOMEM case */ 839 if (err == -ENOMEM) { 840 err = 0; 841 goto retry; 842 } 843 844 if (err) { 845 f2fs_update_inode_page(inode); 846 if (dquot_initialize_needed(inode)) 847 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 848 } 849 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 850 sb_end_intwrite(inode->i_sb); 851 no_delete: 852 dquot_drop(inode); 853 854 stat_dec_inline_xattr(inode); 855 stat_dec_inline_dir(inode); 856 stat_dec_inline_inode(inode); 857 stat_dec_compr_inode(inode); 858 stat_sub_compr_blocks(inode, 859 atomic_read(&F2FS_I(inode)->i_compr_blocks)); 860 861 if (likely(!f2fs_cp_error(sbi) && 862 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 863 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 864 else 865 f2fs_inode_synced(inode); 866 867 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 868 if (inode->i_ino) 869 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 870 inode->i_ino); 871 if (xnid) 872 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 873 if (inode->i_nlink) { 874 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 875 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 876 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 877 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 878 } 879 if (is_inode_flag_set(inode, FI_FREE_NID)) { 880 f2fs_alloc_nid_failed(sbi, inode->i_ino); 881 clear_inode_flag(inode, FI_FREE_NID); 882 } else { 883 /* 884 * If xattr nid is corrupted, we can reach out error condition, 885 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 886 * In that case, f2fs_check_nid_range() is enough to give a clue. 887 */ 888 } 889 out_clear: 890 fscrypt_put_encryption_info(inode); 891 fsverity_cleanup_inode(inode); 892 clear_inode(inode); 893 } 894 895 /* caller should call f2fs_lock_op() */ 896 void f2fs_handle_failed_inode(struct inode *inode) 897 { 898 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 899 struct node_info ni; 900 int err; 901 902 /* 903 * clear nlink of inode in order to release resource of inode 904 * immediately. 905 */ 906 clear_nlink(inode); 907 908 /* 909 * we must call this to avoid inode being remained as dirty, resulting 910 * in a panic when flushing dirty inodes in gdirty_list. 911 */ 912 f2fs_update_inode_page(inode); 913 f2fs_inode_synced(inode); 914 915 /* don't make bad inode, since it becomes a regular file. */ 916 unlock_new_inode(inode); 917 918 /* 919 * Note: we should add inode to orphan list before f2fs_unlock_op() 920 * so we can prevent losing this orphan when encoutering checkpoint 921 * and following suddenly power-off. 922 */ 923 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 924 if (err) { 925 set_sbi_flag(sbi, SBI_NEED_FSCK); 926 set_inode_flag(inode, FI_FREE_NID); 927 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 928 goto out; 929 } 930 931 if (ni.blk_addr != NULL_ADDR) { 932 err = f2fs_acquire_orphan_inode(sbi); 933 if (err) { 934 set_sbi_flag(sbi, SBI_NEED_FSCK); 935 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 936 } else { 937 f2fs_add_orphan_inode(inode); 938 } 939 f2fs_alloc_nid_done(sbi, inode->i_ino); 940 } else { 941 set_inode_flag(inode, FI_FREE_NID); 942 } 943 944 out: 945 f2fs_unlock_op(sbi); 946 947 /* iput will drop the inode object */ 948 iput(inode); 949 } 950