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 (f2fs_sanity_check_inline_data(inode)) { 266 set_sbi_flag(sbi, SBI_NEED_FSCK); 267 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 268 __func__, inode->i_ino, inode->i_mode); 269 return false; 270 } 271 272 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 273 set_sbi_flag(sbi, SBI_NEED_FSCK); 274 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 275 __func__, inode->i_ino, inode->i_mode); 276 return false; 277 } 278 279 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 280 set_sbi_flag(sbi, SBI_NEED_FSCK); 281 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 282 __func__, inode->i_ino); 283 return false; 284 } 285 286 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 287 fi->i_flags & F2FS_COMPR_FL && 288 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 289 i_log_cluster_size)) { 290 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 291 set_sbi_flag(sbi, SBI_NEED_FSCK); 292 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported " 293 "compress algorithm: %u, run fsck to fix", 294 __func__, inode->i_ino, 295 ri->i_compress_algorithm); 296 return false; 297 } 298 if (le64_to_cpu(ri->i_compr_blocks) > 299 SECTOR_TO_BLOCK(inode->i_blocks)) { 300 set_sbi_flag(sbi, SBI_NEED_FSCK); 301 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent " 302 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 303 __func__, inode->i_ino, 304 le64_to_cpu(ri->i_compr_blocks), 305 SECTOR_TO_BLOCK(inode->i_blocks)); 306 return false; 307 } 308 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 309 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 310 set_sbi_flag(sbi, SBI_NEED_FSCK); 311 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported " 312 "log cluster size: %u, run fsck to fix", 313 __func__, inode->i_ino, 314 ri->i_log_cluster_size); 315 return false; 316 } 317 } 318 319 return true; 320 } 321 322 static void init_idisk_time(struct inode *inode) 323 { 324 struct f2fs_inode_info *fi = F2FS_I(inode); 325 326 fi->i_disk_time[0] = inode->i_atime; 327 fi->i_disk_time[1] = inode->i_ctime; 328 fi->i_disk_time[2] = inode->i_mtime; 329 } 330 331 static int do_read_inode(struct inode *inode) 332 { 333 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 334 struct f2fs_inode_info *fi = F2FS_I(inode); 335 struct page *node_page; 336 struct f2fs_inode *ri; 337 projid_t i_projid; 338 int err; 339 340 /* Check if ino is within scope */ 341 if (f2fs_check_nid_range(sbi, inode->i_ino)) 342 return -EINVAL; 343 344 node_page = f2fs_get_node_page(sbi, inode->i_ino); 345 if (IS_ERR(node_page)) 346 return PTR_ERR(node_page); 347 348 ri = F2FS_INODE(node_page); 349 350 inode->i_mode = le16_to_cpu(ri->i_mode); 351 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 352 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 353 set_nlink(inode, le32_to_cpu(ri->i_links)); 354 inode->i_size = le64_to_cpu(ri->i_size); 355 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 356 357 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 358 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); 359 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 360 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 361 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); 362 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 363 inode->i_generation = le32_to_cpu(ri->i_generation); 364 if (S_ISDIR(inode->i_mode)) 365 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 366 else if (S_ISREG(inode->i_mode)) 367 fi->i_gc_failures[GC_FAILURE_PIN] = 368 le16_to_cpu(ri->i_gc_failures); 369 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 370 fi->i_flags = le32_to_cpu(ri->i_flags); 371 if (S_ISREG(inode->i_mode)) 372 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 373 bitmap_zero(fi->flags, FI_MAX); 374 fi->i_advise = ri->i_advise; 375 fi->i_pino = le32_to_cpu(ri->i_pino); 376 fi->i_dir_level = ri->i_dir_level; 377 378 get_inline_info(inode, ri); 379 380 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 381 le16_to_cpu(ri->i_extra_isize) : 0; 382 383 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 384 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 385 } else if (f2fs_has_inline_xattr(inode) || 386 f2fs_has_inline_dentry(inode)) { 387 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 388 } else { 389 390 /* 391 * Previous inline data or directory always reserved 200 bytes 392 * in inode layout, even if inline_xattr is disabled. In order 393 * to keep inline_dentry's structure for backward compatibility, 394 * we get the space back only from inline_data. 395 */ 396 fi->i_inline_xattr_size = 0; 397 } 398 399 /* check data exist */ 400 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 401 __recover_inline_status(inode, node_page); 402 403 /* try to recover cold bit for non-dir inode */ 404 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 405 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 406 set_cold_node(node_page, false); 407 set_page_dirty(node_page); 408 } 409 410 /* get rdev by using inline_info */ 411 __get_inode_rdev(inode, ri); 412 413 if (S_ISREG(inode->i_mode)) { 414 err = __written_first_block(sbi, ri); 415 if (err < 0) { 416 f2fs_put_page(node_page, 1); 417 return err; 418 } 419 if (!err) 420 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 421 } 422 423 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 424 fi->last_disk_size = inode->i_size; 425 426 if (fi->i_flags & F2FS_PROJINHERIT_FL) 427 set_inode_flag(inode, FI_PROJ_INHERIT); 428 429 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 430 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 431 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 432 else 433 i_projid = F2FS_DEF_PROJID; 434 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 435 436 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 437 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 438 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 439 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 440 } 441 442 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 443 (fi->i_flags & F2FS_COMPR_FL)) { 444 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 445 i_log_cluster_size)) { 446 unsigned short compress_flag; 447 448 atomic_set(&fi->i_compr_blocks, 449 le64_to_cpu(ri->i_compr_blocks)); 450 fi->i_compress_algorithm = ri->i_compress_algorithm; 451 fi->i_log_cluster_size = ri->i_log_cluster_size; 452 compress_flag = le16_to_cpu(ri->i_compress_flag); 453 fi->i_compress_level = compress_flag >> 454 COMPRESS_LEVEL_OFFSET; 455 fi->i_compress_flag = compress_flag & 456 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); 457 fi->i_cluster_size = BIT(fi->i_log_cluster_size); 458 set_inode_flag(inode, FI_COMPRESSED_FILE); 459 } 460 } 461 462 init_idisk_time(inode); 463 464 /* Need all the flag bits */ 465 f2fs_init_read_extent_tree(inode, node_page); 466 f2fs_init_age_extent_tree(inode); 467 468 if (!sanity_check_inode(inode, node_page)) { 469 f2fs_put_page(node_page, 1); 470 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 471 return -EFSCORRUPTED; 472 } 473 474 if (!sanity_check_extent_cache(inode)) { 475 f2fs_put_page(node_page, 1); 476 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 477 return -EFSCORRUPTED; 478 } 479 480 f2fs_put_page(node_page, 1); 481 482 stat_inc_inline_xattr(inode); 483 stat_inc_inline_inode(inode); 484 stat_inc_inline_dir(inode); 485 stat_inc_compr_inode(inode); 486 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 487 488 return 0; 489 } 490 491 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) 492 { 493 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || 494 ino == F2FS_COMPRESS_INO(sbi); 495 } 496 497 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 498 { 499 struct f2fs_sb_info *sbi = F2FS_SB(sb); 500 struct inode *inode; 501 int ret = 0; 502 503 inode = iget_locked(sb, ino); 504 if (!inode) 505 return ERR_PTR(-ENOMEM); 506 507 if (!(inode->i_state & I_NEW)) { 508 if (is_meta_ino(sbi, ino)) { 509 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); 510 set_sbi_flag(sbi, SBI_NEED_FSCK); 511 ret = -EFSCORRUPTED; 512 trace_f2fs_iget_exit(inode, ret); 513 iput(inode); 514 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 515 return ERR_PTR(ret); 516 } 517 518 trace_f2fs_iget(inode); 519 return inode; 520 } 521 522 if (is_meta_ino(sbi, ino)) 523 goto make_now; 524 525 ret = do_read_inode(inode); 526 if (ret) 527 goto bad_inode; 528 make_now: 529 if (ino == F2FS_NODE_INO(sbi)) { 530 inode->i_mapping->a_ops = &f2fs_node_aops; 531 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 532 } else if (ino == F2FS_META_INO(sbi)) { 533 inode->i_mapping->a_ops = &f2fs_meta_aops; 534 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 535 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 536 #ifdef CONFIG_F2FS_FS_COMPRESSION 537 inode->i_mapping->a_ops = &f2fs_compress_aops; 538 /* 539 * generic_error_remove_page only truncates pages of regular 540 * inode 541 */ 542 inode->i_mode |= S_IFREG; 543 #endif 544 mapping_set_gfp_mask(inode->i_mapping, 545 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 546 } else if (S_ISREG(inode->i_mode)) { 547 inode->i_op = &f2fs_file_inode_operations; 548 inode->i_fop = &f2fs_file_operations; 549 inode->i_mapping->a_ops = &f2fs_dblock_aops; 550 } else if (S_ISDIR(inode->i_mode)) { 551 inode->i_op = &f2fs_dir_inode_operations; 552 inode->i_fop = &f2fs_dir_operations; 553 inode->i_mapping->a_ops = &f2fs_dblock_aops; 554 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 555 } else if (S_ISLNK(inode->i_mode)) { 556 if (file_is_encrypt(inode)) 557 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 558 else 559 inode->i_op = &f2fs_symlink_inode_operations; 560 inode_nohighmem(inode); 561 inode->i_mapping->a_ops = &f2fs_dblock_aops; 562 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 563 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 564 inode->i_op = &f2fs_special_inode_operations; 565 init_special_inode(inode, inode->i_mode, inode->i_rdev); 566 } else { 567 ret = -EIO; 568 goto bad_inode; 569 } 570 f2fs_set_inode_flags(inode); 571 572 if (file_should_truncate(inode) && 573 !is_sbi_flag_set(sbi, SBI_POR_DOING)) { 574 ret = f2fs_truncate(inode); 575 if (ret) 576 goto bad_inode; 577 file_dont_truncate(inode); 578 } 579 580 unlock_new_inode(inode); 581 trace_f2fs_iget(inode); 582 return inode; 583 584 bad_inode: 585 f2fs_inode_synced(inode); 586 iget_failed(inode); 587 trace_f2fs_iget_exit(inode, ret); 588 return ERR_PTR(ret); 589 } 590 591 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 592 { 593 struct inode *inode; 594 retry: 595 inode = f2fs_iget(sb, ino); 596 if (IS_ERR(inode)) { 597 if (PTR_ERR(inode) == -ENOMEM) { 598 memalloc_retry_wait(GFP_NOFS); 599 goto retry; 600 } 601 } 602 return inode; 603 } 604 605 void f2fs_update_inode(struct inode *inode, struct page *node_page) 606 { 607 struct f2fs_inode *ri; 608 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ]; 609 610 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 611 set_page_dirty(node_page); 612 613 f2fs_inode_synced(inode); 614 615 ri = F2FS_INODE(node_page); 616 617 ri->i_mode = cpu_to_le16(inode->i_mode); 618 ri->i_advise = F2FS_I(inode)->i_advise; 619 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 620 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 621 ri->i_links = cpu_to_le32(inode->i_nlink); 622 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 623 624 if (!f2fs_is_atomic_file(inode) || 625 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) 626 ri->i_size = cpu_to_le64(i_size_read(inode)); 627 628 if (et) { 629 read_lock(&et->lock); 630 set_raw_read_extent(&et->largest, &ri->i_ext); 631 read_unlock(&et->lock); 632 } else { 633 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 634 } 635 set_raw_inline(inode, ri); 636 637 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 638 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); 639 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 640 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 641 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); 642 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 643 if (S_ISDIR(inode->i_mode)) 644 ri->i_current_depth = 645 cpu_to_le32(F2FS_I(inode)->i_current_depth); 646 else if (S_ISREG(inode->i_mode)) 647 ri->i_gc_failures = 648 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); 649 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 650 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 651 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 652 ri->i_generation = cpu_to_le32(inode->i_generation); 653 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 654 655 if (f2fs_has_extra_attr(inode)) { 656 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 657 658 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 659 ri->i_inline_xattr_size = 660 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 661 662 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 663 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 664 i_projid)) { 665 projid_t i_projid; 666 667 i_projid = from_kprojid(&init_user_ns, 668 F2FS_I(inode)->i_projid); 669 ri->i_projid = cpu_to_le32(i_projid); 670 } 671 672 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 673 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 674 i_crtime)) { 675 ri->i_crtime = 676 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 677 ri->i_crtime_nsec = 678 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 679 } 680 681 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 682 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 683 i_log_cluster_size)) { 684 unsigned short compress_flag; 685 686 ri->i_compr_blocks = 687 cpu_to_le64(atomic_read( 688 &F2FS_I(inode)->i_compr_blocks)); 689 ri->i_compress_algorithm = 690 F2FS_I(inode)->i_compress_algorithm; 691 compress_flag = F2FS_I(inode)->i_compress_flag | 692 F2FS_I(inode)->i_compress_level << 693 COMPRESS_LEVEL_OFFSET; 694 ri->i_compress_flag = cpu_to_le16(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 int count = 0; 717 retry: 718 node_page = f2fs_get_node_page(sbi, inode->i_ino); 719 if (IS_ERR(node_page)) { 720 int err = PTR_ERR(node_page); 721 722 /* The node block was truncated. */ 723 if (err == -ENOENT) 724 return; 725 726 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT) 727 goto retry; 728 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE); 729 return; 730 } 731 f2fs_update_inode(inode, node_page); 732 f2fs_put_page(node_page, 1); 733 } 734 735 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 736 { 737 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 738 739 if (inode->i_ino == F2FS_NODE_INO(sbi) || 740 inode->i_ino == F2FS_META_INO(sbi)) 741 return 0; 742 743 /* 744 * atime could be updated without dirtying f2fs inode in lazytime mode 745 */ 746 if (f2fs_is_time_consistent(inode) && 747 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 748 return 0; 749 750 if (!f2fs_is_checkpoint_ready(sbi)) 751 return -ENOSPC; 752 753 /* 754 * We need to balance fs here to prevent from producing dirty node pages 755 * during the urgent cleaning time when running out of free sections. 756 */ 757 f2fs_update_inode_page(inode); 758 if (wbc && wbc->nr_to_write) 759 f2fs_balance_fs(sbi, true); 760 return 0; 761 } 762 763 /* 764 * Called at the last iput() if i_nlink is zero 765 */ 766 void f2fs_evict_inode(struct inode *inode) 767 { 768 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 769 struct f2fs_inode_info *fi = F2FS_I(inode); 770 nid_t xnid = fi->i_xattr_nid; 771 int err = 0; 772 773 f2fs_abort_atomic_write(inode, true); 774 775 if (fi->cow_inode) { 776 clear_inode_flag(fi->cow_inode, FI_COW_FILE); 777 iput(fi->cow_inode); 778 fi->cow_inode = NULL; 779 } 780 781 trace_f2fs_evict_inode(inode); 782 truncate_inode_pages_final(&inode->i_data); 783 784 if ((inode->i_nlink || is_bad_inode(inode)) && 785 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 786 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 787 788 if (inode->i_ino == F2FS_NODE_INO(sbi) || 789 inode->i_ino == F2FS_META_INO(sbi) || 790 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 791 goto out_clear; 792 793 f2fs_bug_on(sbi, get_dirty_pages(inode)); 794 f2fs_remove_dirty_inode(inode); 795 796 f2fs_destroy_extent_tree(inode); 797 798 if (inode->i_nlink || is_bad_inode(inode)) 799 goto no_delete; 800 801 err = f2fs_dquot_initialize(inode); 802 if (err) { 803 err = 0; 804 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 805 } 806 807 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 808 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 809 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 810 811 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 812 sb_start_intwrite(inode->i_sb); 813 set_inode_flag(inode, FI_NO_ALLOC); 814 i_size_write(inode, 0); 815 retry: 816 if (F2FS_HAS_BLOCKS(inode)) 817 err = f2fs_truncate(inode); 818 819 if (time_to_inject(sbi, FAULT_EVICT_INODE)) 820 err = -EIO; 821 822 if (!err) { 823 f2fs_lock_op(sbi); 824 err = f2fs_remove_inode_page(inode); 825 f2fs_unlock_op(sbi); 826 if (err == -ENOENT) { 827 err = 0; 828 829 /* 830 * in fuzzed image, another node may has the same 831 * block address as inode's, if it was truncated 832 * previously, truncation of inode node will fail. 833 */ 834 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 835 f2fs_warn(F2FS_I_SB(inode), 836 "f2fs_evict_inode: inconsistent node id, ino:%lu", 837 inode->i_ino); 838 f2fs_inode_synced(inode); 839 set_sbi_flag(sbi, SBI_NEED_FSCK); 840 } 841 } 842 } 843 844 /* give more chances, if ENOMEM case */ 845 if (err == -ENOMEM) { 846 err = 0; 847 goto retry; 848 } 849 850 if (err) { 851 f2fs_update_inode_page(inode); 852 if (dquot_initialize_needed(inode)) 853 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 854 } 855 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) 856 sb_end_intwrite(inode->i_sb); 857 no_delete: 858 dquot_drop(inode); 859 860 stat_dec_inline_xattr(inode); 861 stat_dec_inline_dir(inode); 862 stat_dec_inline_inode(inode); 863 stat_dec_compr_inode(inode); 864 stat_sub_compr_blocks(inode, 865 atomic_read(&fi->i_compr_blocks)); 866 867 if (likely(!f2fs_cp_error(sbi) && 868 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 869 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 870 else 871 f2fs_inode_synced(inode); 872 873 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 874 if (inode->i_ino) 875 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 876 inode->i_ino); 877 if (xnid) 878 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 879 if (inode->i_nlink) { 880 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 881 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 882 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 883 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 884 } 885 if (is_inode_flag_set(inode, FI_FREE_NID)) { 886 f2fs_alloc_nid_failed(sbi, inode->i_ino); 887 clear_inode_flag(inode, FI_FREE_NID); 888 } else { 889 /* 890 * If xattr nid is corrupted, we can reach out error condition, 891 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 892 * In that case, f2fs_check_nid_range() is enough to give a clue. 893 */ 894 } 895 out_clear: 896 fscrypt_put_encryption_info(inode); 897 fsverity_cleanup_inode(inode); 898 clear_inode(inode); 899 } 900 901 /* caller should call f2fs_lock_op() */ 902 void f2fs_handle_failed_inode(struct inode *inode) 903 { 904 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 905 struct node_info ni; 906 int err; 907 908 /* 909 * clear nlink of inode in order to release resource of inode 910 * immediately. 911 */ 912 clear_nlink(inode); 913 914 /* 915 * we must call this to avoid inode being remained as dirty, resulting 916 * in a panic when flushing dirty inodes in gdirty_list. 917 */ 918 f2fs_update_inode_page(inode); 919 f2fs_inode_synced(inode); 920 921 /* don't make bad inode, since it becomes a regular file. */ 922 unlock_new_inode(inode); 923 924 /* 925 * Note: we should add inode to orphan list before f2fs_unlock_op() 926 * so we can prevent losing this orphan when encoutering checkpoint 927 * and following suddenly power-off. 928 */ 929 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 930 if (err) { 931 set_sbi_flag(sbi, SBI_NEED_FSCK); 932 set_inode_flag(inode, FI_FREE_NID); 933 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 934 goto out; 935 } 936 937 if (ni.blk_addr != NULL_ADDR) { 938 err = f2fs_acquire_orphan_inode(sbi); 939 if (err) { 940 set_sbi_flag(sbi, SBI_NEED_FSCK); 941 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 942 } else { 943 f2fs_add_orphan_inode(inode); 944 } 945 f2fs_alloc_nid_done(sbi, inode->i_ino); 946 } else { 947 set_inode_flag(inode, FI_FREE_NID); 948 } 949 950 out: 951 f2fs_unlock_op(sbi); 952 953 /* iput will drop the inode object */ 954 iput(inode); 955 } 956