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) { 266 struct extent_info *ei = &fi->extent_tree->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 f2fs_init_extent_tree(inode, node_page); 396 397 get_inline_info(inode, ri); 398 399 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 400 le16_to_cpu(ri->i_extra_isize) : 0; 401 402 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 403 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 404 } else if (f2fs_has_inline_xattr(inode) || 405 f2fs_has_inline_dentry(inode)) { 406 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 407 } else { 408 409 /* 410 * Previous inline data or directory always reserved 200 bytes 411 * in inode layout, even if inline_xattr is disabled. In order 412 * to keep inline_dentry's structure for backward compatibility, 413 * we get the space back only from inline_data. 414 */ 415 fi->i_inline_xattr_size = 0; 416 } 417 418 if (!sanity_check_inode(inode, node_page)) { 419 f2fs_put_page(node_page, 1); 420 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 421 return -EFSCORRUPTED; 422 } 423 424 /* check data exist */ 425 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 426 __recover_inline_status(inode, node_page); 427 428 /* try to recover cold bit for non-dir inode */ 429 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 430 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 431 set_cold_node(node_page, false); 432 set_page_dirty(node_page); 433 } 434 435 /* get rdev by using inline_info */ 436 __get_inode_rdev(inode, ri); 437 438 if (S_ISREG(inode->i_mode)) { 439 err = __written_first_block(sbi, ri); 440 if (err < 0) { 441 f2fs_put_page(node_page, 1); 442 return err; 443 } 444 if (!err) 445 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 446 } 447 448 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 449 fi->last_disk_size = inode->i_size; 450 451 if (fi->i_flags & F2FS_PROJINHERIT_FL) 452 set_inode_flag(inode, FI_PROJ_INHERIT); 453 454 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 455 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 456 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 457 else 458 i_projid = F2FS_DEF_PROJID; 459 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 460 461 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 462 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 463 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 464 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 465 } 466 467 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 468 (fi->i_flags & F2FS_COMPR_FL)) { 469 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 470 i_log_cluster_size)) { 471 atomic_set(&fi->i_compr_blocks, 472 le64_to_cpu(ri->i_compr_blocks)); 473 fi->i_compress_algorithm = ri->i_compress_algorithm; 474 fi->i_log_cluster_size = ri->i_log_cluster_size; 475 fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag); 476 fi->i_cluster_size = 1 << fi->i_log_cluster_size; 477 set_inode_flag(inode, FI_COMPRESSED_FILE); 478 } 479 } 480 481 init_idisk_time(inode); 482 f2fs_put_page(node_page, 1); 483 484 stat_inc_inline_xattr(inode); 485 stat_inc_inline_inode(inode); 486 stat_inc_inline_dir(inode); 487 stat_inc_compr_inode(inode); 488 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 489 490 return 0; 491 } 492 493 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 494 { 495 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 496 ino == F2FS_COMPRESS_INO(sbi); 497 } 498 499 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 500 { 501 struct f2fs_sb_info *sbi = F2FS_SB(sb); 502 struct inode *inode; 503 int ret = 0; 504 505 inode = iget_locked(sb, ino); 506 if (!inode) 507 return ERR_PTR(-ENOMEM); 508 509 if (!(inode->i_state & I_NEW)) { 510 if (is_meta_ino(sbi, ino)) { 511 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 512 set_sbi_flag(sbi, SBI_NEED_FSCK); 513 ret = -EFSCORRUPTED; 514 trace_f2fs_iget_exit(inode, ret); 515 iput(inode); 516 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 517 return ERR_PTR(ret); 518 } 519 520 trace_f2fs_iget(inode); 521 return inode; 522 } 523 524 if (is_meta_ino(sbi, ino)) 525 goto make_now; 526 527 ret = do_read_inode(inode); 528 if (ret) 529 goto bad_inode; 530 make_now: 531 if (ino == F2FS_NODE_INO(sbi)) { 532 inode->i_mapping->a_ops = &f2fs_node_aops; 533 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 534 } else if (ino == F2FS_META_INO(sbi)) { 535 inode->i_mapping->a_ops = &f2fs_meta_aops; 536 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 537 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 538 #ifdef CONFIG_F2FS_FS_COMPRESSION 539 inode->i_mapping->a_ops = &f2fs_compress_aops; 540 /* 541 * generic_error_remove_page only truncates pages of regular 542 * inode 543 */ 544 inode->i_mode |= S_IFREG; 545 #endif 546 mapping_set_gfp_mask(inode->i_mapping, 547 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 548 } else if (S_ISREG(inode->i_mode)) { 549 inode->i_op = &f2fs_file_inode_operations; 550 inode->i_fop = &f2fs_file_operations; 551 inode->i_mapping->a_ops = &f2fs_dblock_aops; 552 } else if (S_ISDIR(inode->i_mode)) { 553 inode->i_op = &f2fs_dir_inode_operations; 554 inode->i_fop = &f2fs_dir_operations; 555 inode->i_mapping->a_ops = &f2fs_dblock_aops; 556 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 557 } else if (S_ISLNK(inode->i_mode)) { 558 if (file_is_encrypt(inode)) 559 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 560 else 561 inode->i_op = &f2fs_symlink_inode_operations; 562 inode_nohighmem(inode); 563 inode->i_mapping->a_ops = &f2fs_dblock_aops; 564 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 565 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 566 inode->i_op = &f2fs_special_inode_operations; 567 init_special_inode(inode, inode->i_mode, inode->i_rdev); 568 } else { 569 ret = -EIO; 570 goto bad_inode; 571 } 572 f2fs_set_inode_flags(inode); 573 574 if (file_should_truncate(inode) && 575 !is_sbi_flag_set(sbi, SBI_POR_DOING)) { 576 ret = f2fs_truncate(inode); 577 if (ret) 578 goto bad_inode; 579 file_dont_truncate(inode); 580 } 581 582 unlock_new_inode(inode); 583 trace_f2fs_iget(inode); 584 return inode; 585 586 bad_inode: 587 f2fs_inode_synced(inode); 588 iget_failed(inode); 589 trace_f2fs_iget_exit(inode, ret); 590 return ERR_PTR(ret); 591 } 592 593 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 594 { 595 struct inode *inode; 596 retry: 597 inode = f2fs_iget(sb, ino); 598 if (IS_ERR(inode)) { 599 if (PTR_ERR(inode) == -ENOMEM) { 600 memalloc_retry_wait(GFP_NOFS); 601 goto retry; 602 } 603 } 604 return inode; 605 } 606 607 void f2fs_update_inode(struct inode *inode, struct page *node_page) 608 { 609 struct f2fs_inode *ri; 610 struct extent_tree *et = F2FS_I(inode)->extent_tree; 611 612 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 613 set_page_dirty(node_page); 614 615 f2fs_inode_synced(inode); 616 617 ri = F2FS_INODE(node_page); 618 619 ri->i_mode = cpu_to_le16(inode->i_mode); 620 ri->i_advise = F2FS_I(inode)->i_advise; 621 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 622 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 623 ri->i_links = cpu_to_le32(inode->i_nlink); 624 ri->i_size = cpu_to_le64(i_size_read(inode)); 625 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 626 627 if (et) { 628 read_lock(&et->lock); 629 set_raw_extent(&et->largest, &ri->i_ext); 630 read_unlock(&et->lock); 631 } else { 632 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 633 } 634 set_raw_inline(inode, ri); 635 636 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 637 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); 638 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 639 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 640 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); 641 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 642 if (S_ISDIR(inode->i_mode)) 643 ri->i_current_depth = 644 cpu_to_le32(F2FS_I(inode)->i_current_depth); 645 else if (S_ISREG(inode->i_mode)) 646 ri->i_gc_failures = 647 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); 648 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 649 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 650 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 651 ri->i_generation = cpu_to_le32(inode->i_generation); 652 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 653 654 if (f2fs_has_extra_attr(inode)) { 655 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 656 657 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 658 ri->i_inline_xattr_size = 659 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 660 661 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 662 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 663 i_projid)) { 664 projid_t i_projid; 665 666 i_projid = from_kprojid(&init_user_ns, 667 F2FS_I(inode)->i_projid); 668 ri->i_projid = cpu_to_le32(i_projid); 669 } 670 671 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 672 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 673 i_crtime)) { 674 ri->i_crtime = 675 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 676 ri->i_crtime_nsec = 677 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 678 } 679 680 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 681 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 682 i_log_cluster_size)) { 683 ri->i_compr_blocks = 684 cpu_to_le64(atomic_read( 685 &F2FS_I(inode)->i_compr_blocks)); 686 ri->i_compress_algorithm = 687 F2FS_I(inode)->i_compress_algorithm; 688 ri->i_compress_flag = 689 cpu_to_le16(F2FS_I(inode)->i_compress_flag); 690 ri->i_log_cluster_size = 691 F2FS_I(inode)->i_log_cluster_size; 692 } 693 } 694 695 __set_inode_rdev(inode, ri); 696 697 /* deleted inode */ 698 if (inode->i_nlink == 0) 699 clear_page_private_inline(node_page); 700 701 init_idisk_time(inode); 702 #ifdef CONFIG_F2FS_CHECK_FS 703 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 704 #endif 705 } 706 707 void f2fs_update_inode_page(struct inode *inode) 708 { 709 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 710 struct page *node_page; 711 retry: 712 node_page = f2fs_get_node_page(sbi, inode->i_ino); 713 if (IS_ERR(node_page)) { 714 int err = PTR_ERR(node_page); 715 716 if (err == -ENOMEM) { 717 cond_resched(); 718 goto retry; 719 } else if (err != -ENOENT) { 720 f2fs_stop_checkpoint(sbi, false, 721 STOP_CP_REASON_UPDATE_INODE); 722 } 723 return; 724 } 725 f2fs_update_inode(inode, node_page); 726 f2fs_put_page(node_page, 1); 727 } 728 729 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 730 { 731 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 732 733 if (inode->i_ino == F2FS_NODE_INO(sbi) || 734 inode->i_ino == F2FS_META_INO(sbi)) 735 return 0; 736 737 /* 738 * atime could be updated without dirtying f2fs inode in lazytime mode 739 */ 740 if (f2fs_is_time_consistent(inode) && 741 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 742 return 0; 743 744 if (!f2fs_is_checkpoint_ready(sbi)) 745 return -ENOSPC; 746 747 /* 748 * We need to balance fs here to prevent from producing dirty node pages 749 * during the urgent cleaning time when running out of free sections. 750 */ 751 f2fs_update_inode_page(inode); 752 if (wbc && wbc->nr_to_write) 753 f2fs_balance_fs(sbi, true); 754 return 0; 755 } 756 757 /* 758 * Called at the last iput() if i_nlink is zero 759 */ 760 void f2fs_evict_inode(struct inode *inode) 761 { 762 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 763 nid_t xnid = F2FS_I(inode)->i_xattr_nid; 764 int err = 0; 765 766 f2fs_abort_atomic_write(inode, true); 767 768 trace_f2fs_evict_inode(inode); 769 truncate_inode_pages_final(&inode->i_data); 770 771 if ((inode->i_nlink || is_bad_inode(inode)) && 772 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 773 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 774 775 if (inode->i_ino == F2FS_NODE_INO(sbi) || 776 inode->i_ino == F2FS_META_INO(sbi) || 777 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 778 goto out_clear; 779 780 f2fs_bug_on(sbi, get_dirty_pages(inode)); 781 f2fs_remove_dirty_inode(inode); 782 783 f2fs_destroy_extent_tree(inode); 784 785 if (inode->i_nlink || is_bad_inode(inode)) 786 goto no_delete; 787 788 err = f2fs_dquot_initialize(inode); 789 if (err) { 790 err = 0; 791 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 792 } 793 794 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 795 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 796 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 797 798 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 799 sb_start_intwrite(inode->i_sb); 800 set_inode_flag(inode, FI_NO_ALLOC); 801 i_size_write(inode, 0); 802 retry: 803 if (F2FS_HAS_BLOCKS(inode)) 804 err = f2fs_truncate(inode); 805 806 if (time_to_inject(sbi, FAULT_EVICT_INODE)) { 807 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE); 808 err = -EIO; 809 } 810 811 if (!err) { 812 f2fs_lock_op(sbi); 813 err = f2fs_remove_inode_page(inode); 814 f2fs_unlock_op(sbi); 815 if (err == -ENOENT) { 816 err = 0; 817 818 /* 819 * in fuzzed image, another node may has the same 820 * block address as inode's, if it was truncated 821 * previously, truncation of inode node will fail. 822 */ 823 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 824 f2fs_warn(F2FS_I_SB(inode), 825 "f2fs_evict_inode: inconsistent node id, ino:%lu", 826 inode->i_ino); 827 f2fs_inode_synced(inode); 828 set_sbi_flag(sbi, SBI_NEED_FSCK); 829 } 830 } 831 } 832 833 /* give more chances, if ENOMEM case */ 834 if (err == -ENOMEM) { 835 err = 0; 836 goto retry; 837 } 838 839 if (err) { 840 f2fs_update_inode_page(inode); 841 if (dquot_initialize_needed(inode)) 842 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 843 } 844 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 845 sb_end_intwrite(inode->i_sb); 846 no_delete: 847 dquot_drop(inode); 848 849 stat_dec_inline_xattr(inode); 850 stat_dec_inline_dir(inode); 851 stat_dec_inline_inode(inode); 852 stat_dec_compr_inode(inode); 853 stat_sub_compr_blocks(inode, 854 atomic_read(&F2FS_I(inode)->i_compr_blocks)); 855 856 if (likely(!f2fs_cp_error(sbi) && 857 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 858 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 859 else 860 f2fs_inode_synced(inode); 861 862 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 863 if (inode->i_ino) 864 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 865 inode->i_ino); 866 if (xnid) 867 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 868 if (inode->i_nlink) { 869 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 870 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 871 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 872 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 873 } 874 if (is_inode_flag_set(inode, FI_FREE_NID)) { 875 f2fs_alloc_nid_failed(sbi, inode->i_ino); 876 clear_inode_flag(inode, FI_FREE_NID); 877 } else { 878 /* 879 * If xattr nid is corrupted, we can reach out error condition, 880 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 881 * In that case, f2fs_check_nid_range() is enough to give a clue. 882 */ 883 } 884 out_clear: 885 fscrypt_put_encryption_info(inode); 886 fsverity_cleanup_inode(inode); 887 clear_inode(inode); 888 } 889 890 /* caller should call f2fs_lock_op() */ 891 void f2fs_handle_failed_inode(struct inode *inode) 892 { 893 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 894 struct node_info ni; 895 int err; 896 897 /* 898 * clear nlink of inode in order to release resource of inode 899 * immediately. 900 */ 901 clear_nlink(inode); 902 903 /* 904 * we must call this to avoid inode being remained as dirty, resulting 905 * in a panic when flushing dirty inodes in gdirty_list. 906 */ 907 f2fs_update_inode_page(inode); 908 f2fs_inode_synced(inode); 909 910 /* don't make bad inode, since it becomes a regular file. */ 911 unlock_new_inode(inode); 912 913 /* 914 * Note: we should add inode to orphan list before f2fs_unlock_op() 915 * so we can prevent losing this orphan when encoutering checkpoint 916 * and following suddenly power-off. 917 */ 918 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 919 if (err) { 920 set_sbi_flag(sbi, SBI_NEED_FSCK); 921 set_inode_flag(inode, FI_FREE_NID); 922 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 923 goto out; 924 } 925 926 if (ni.blk_addr != NULL_ADDR) { 927 err = f2fs_acquire_orphan_inode(sbi); 928 if (err) { 929 set_sbi_flag(sbi, SBI_NEED_FSCK); 930 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 931 } else { 932 f2fs_add_orphan_inode(inode); 933 } 934 f2fs_alloc_nid_done(sbi, inode->i_ino); 935 } else { 936 set_inode_flag(inode, FI_FREE_NID); 937 } 938 939 out: 940 f2fs_unlock_op(sbi); 941 942 /* iput will drop the inode object */ 943 iput(inode); 944 } 945