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 return -EFSCORRUPTED; 86 return 0; 87 } 88 89 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) 90 { 91 int extra_size = get_extra_isize(inode); 92 93 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 94 if (old_valid_dev(inode->i_rdev)) { 95 ri->i_addr[extra_size] = 96 cpu_to_le32(old_encode_dev(inode->i_rdev)); 97 ri->i_addr[extra_size + 1] = 0; 98 } else { 99 ri->i_addr[extra_size] = 0; 100 ri->i_addr[extra_size + 1] = 101 cpu_to_le32(new_encode_dev(inode->i_rdev)); 102 ri->i_addr[extra_size + 2] = 0; 103 } 104 } 105 } 106 107 static void __recover_inline_status(struct inode *inode, struct page *ipage) 108 { 109 void *inline_data = inline_data_addr(inode, ipage); 110 __le32 *start = inline_data; 111 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 112 113 while (start < end) { 114 if (*start++) { 115 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 116 117 set_inode_flag(inode, FI_DATA_EXIST); 118 set_raw_inline(inode, F2FS_INODE(ipage)); 119 set_page_dirty(ipage); 120 return; 121 } 122 } 123 return; 124 } 125 126 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 127 { 128 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 129 130 if (!f2fs_sb_has_inode_chksum(sbi)) 131 return false; 132 133 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 134 return false; 135 136 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), 137 i_inode_checksum)) 138 return false; 139 140 return true; 141 } 142 143 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 144 { 145 struct f2fs_node *node = F2FS_NODE(page); 146 struct f2fs_inode *ri = &node->i; 147 __le32 ino = node->footer.ino; 148 __le32 gen = ri->i_generation; 149 __u32 chksum, chksum_seed; 150 __u32 dummy_cs = 0; 151 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 152 unsigned int cs_size = sizeof(dummy_cs); 153 154 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 155 sizeof(ino)); 156 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 157 158 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 159 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 160 offset += cs_size; 161 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 162 F2FS_BLKSIZE - offset); 163 return chksum; 164 } 165 166 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 167 { 168 struct f2fs_inode *ri; 169 __u32 provided, calculated; 170 171 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) 172 return true; 173 174 #ifdef CONFIG_F2FS_CHECK_FS 175 if (!f2fs_enable_inode_chksum(sbi, page)) 176 #else 177 if (!f2fs_enable_inode_chksum(sbi, page) || 178 PageDirty(page) || PageWriteback(page)) 179 #endif 180 return true; 181 182 ri = &F2FS_NODE(page)->i; 183 provided = le32_to_cpu(ri->i_inode_checksum); 184 calculated = f2fs_inode_chksum(sbi, page); 185 186 if (provided != calculated) 187 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", 188 page->index, ino_of_node(page), provided, calculated); 189 190 return provided == calculated; 191 } 192 193 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 194 { 195 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 196 197 if (!f2fs_enable_inode_chksum(sbi, page)) 198 return; 199 200 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 201 } 202 203 static bool sanity_check_inode(struct inode *inode, struct page *node_page) 204 { 205 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 206 struct f2fs_inode_info *fi = F2FS_I(inode); 207 struct f2fs_inode *ri = F2FS_INODE(node_page); 208 unsigned long long iblocks; 209 210 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); 211 if (!iblocks) { 212 set_sbi_flag(sbi, SBI_NEED_FSCK); 213 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", 214 __func__, inode->i_ino, iblocks); 215 return false; 216 } 217 218 if (ino_of_node(node_page) != nid_of_node(node_page)) { 219 set_sbi_flag(sbi, SBI_NEED_FSCK); 220 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", 221 __func__, inode->i_ino, 222 ino_of_node(node_page), nid_of_node(node_page)); 223 return false; 224 } 225 226 if (f2fs_sb_has_flexible_inline_xattr(sbi) 227 && !f2fs_has_extra_attr(inode)) { 228 set_sbi_flag(sbi, SBI_NEED_FSCK); 229 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", 230 __func__, inode->i_ino); 231 return false; 232 } 233 234 if (f2fs_has_extra_attr(inode) && 235 !f2fs_sb_has_extra_attr(sbi)) { 236 set_sbi_flag(sbi, SBI_NEED_FSCK); 237 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", 238 __func__, inode->i_ino); 239 return false; 240 } 241 242 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || 243 fi->i_extra_isize % sizeof(__le32)) { 244 set_sbi_flag(sbi, SBI_NEED_FSCK); 245 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", 246 __func__, inode->i_ino, fi->i_extra_isize, 247 F2FS_TOTAL_EXTRA_ATTR_SIZE); 248 return false; 249 } 250 251 if (f2fs_has_extra_attr(inode) && 252 f2fs_sb_has_flexible_inline_xattr(sbi) && 253 f2fs_has_inline_xattr(inode) && 254 (!fi->i_inline_xattr_size || 255 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { 256 set_sbi_flag(sbi, SBI_NEED_FSCK); 257 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", 258 __func__, inode->i_ino, fi->i_inline_xattr_size, 259 MAX_INLINE_XATTR_SIZE); 260 return false; 261 } 262 263 if (F2FS_I(inode)->extent_tree) { 264 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest; 265 266 if (ei->len && 267 (!f2fs_is_valid_blkaddr(sbi, ei->blk, 268 DATA_GENERIC_ENHANCE) || 269 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1, 270 DATA_GENERIC_ENHANCE))) { 271 set_sbi_flag(sbi, SBI_NEED_FSCK); 272 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix", 273 __func__, inode->i_ino, 274 ei->blk, ei->fofs, ei->len); 275 return false; 276 } 277 } 278 279 if (f2fs_has_inline_data(inode) && 280 (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) { 281 set_sbi_flag(sbi, SBI_NEED_FSCK); 282 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", 283 __func__, inode->i_ino, inode->i_mode); 284 return false; 285 } 286 287 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { 288 set_sbi_flag(sbi, SBI_NEED_FSCK); 289 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", 290 __func__, inode->i_ino, inode->i_mode); 291 return false; 292 } 293 294 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { 295 set_sbi_flag(sbi, SBI_NEED_FSCK); 296 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", 297 __func__, inode->i_ino); 298 return false; 299 } 300 301 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 302 fi->i_flags & F2FS_COMPR_FL && 303 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 304 i_log_cluster_size)) { 305 if (ri->i_compress_algorithm >= COMPRESS_MAX) { 306 set_sbi_flag(sbi, SBI_NEED_FSCK); 307 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported " 308 "compress algorithm: %u, run fsck to fix", 309 __func__, inode->i_ino, 310 ri->i_compress_algorithm); 311 return false; 312 } 313 if (le64_to_cpu(ri->i_compr_blocks) > 314 SECTOR_TO_BLOCK(inode->i_blocks)) { 315 set_sbi_flag(sbi, SBI_NEED_FSCK); 316 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent " 317 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", 318 __func__, inode->i_ino, 319 le64_to_cpu(ri->i_compr_blocks), 320 SECTOR_TO_BLOCK(inode->i_blocks)); 321 return false; 322 } 323 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || 324 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { 325 set_sbi_flag(sbi, SBI_NEED_FSCK); 326 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported " 327 "log cluster size: %u, run fsck to fix", 328 __func__, inode->i_ino, 329 ri->i_log_cluster_size); 330 return false; 331 } 332 } 333 334 return true; 335 } 336 337 static int do_read_inode(struct inode *inode) 338 { 339 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 340 struct f2fs_inode_info *fi = F2FS_I(inode); 341 struct page *node_page; 342 struct f2fs_inode *ri; 343 projid_t i_projid; 344 int err; 345 346 /* Check if ino is within scope */ 347 if (f2fs_check_nid_range(sbi, inode->i_ino)) 348 return -EINVAL; 349 350 node_page = f2fs_get_node_page(sbi, inode->i_ino); 351 if (IS_ERR(node_page)) 352 return PTR_ERR(node_page); 353 354 ri = F2FS_INODE(node_page); 355 356 inode->i_mode = le16_to_cpu(ri->i_mode); 357 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 358 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 359 set_nlink(inode, le32_to_cpu(ri->i_links)); 360 inode->i_size = le64_to_cpu(ri->i_size); 361 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 362 363 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 364 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); 365 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 366 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 367 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); 368 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 369 inode->i_generation = le32_to_cpu(ri->i_generation); 370 if (S_ISDIR(inode->i_mode)) 371 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 372 else if (S_ISREG(inode->i_mode)) 373 fi->i_gc_failures[GC_FAILURE_PIN] = 374 le16_to_cpu(ri->i_gc_failures); 375 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 376 fi->i_flags = le32_to_cpu(ri->i_flags); 377 if (S_ISREG(inode->i_mode)) 378 fi->i_flags &= ~F2FS_PROJINHERIT_FL; 379 bitmap_zero(fi->flags, FI_MAX); 380 fi->i_advise = ri->i_advise; 381 fi->i_pino = le32_to_cpu(ri->i_pino); 382 fi->i_dir_level = ri->i_dir_level; 383 384 f2fs_init_extent_tree(inode, node_page); 385 386 get_inline_info(inode, ri); 387 388 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 389 le16_to_cpu(ri->i_extra_isize) : 0; 390 391 if (f2fs_sb_has_flexible_inline_xattr(sbi)) { 392 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 393 } else if (f2fs_has_inline_xattr(inode) || 394 f2fs_has_inline_dentry(inode)) { 395 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 396 } else { 397 398 /* 399 * Previous inline data or directory always reserved 200 bytes 400 * in inode layout, even if inline_xattr is disabled. In order 401 * to keep inline_dentry's structure for backward compatibility, 402 * we get the space back only from inline_data. 403 */ 404 fi->i_inline_xattr_size = 0; 405 } 406 407 if (!sanity_check_inode(inode, node_page)) { 408 f2fs_put_page(node_page, 1); 409 return -EFSCORRUPTED; 410 } 411 412 /* check data exist */ 413 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 414 __recover_inline_status(inode, node_page); 415 416 /* try to recover cold bit for non-dir inode */ 417 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { 418 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 419 set_cold_node(node_page, false); 420 set_page_dirty(node_page); 421 } 422 423 /* get rdev by using inline_info */ 424 __get_inode_rdev(inode, ri); 425 426 if (S_ISREG(inode->i_mode)) { 427 err = __written_first_block(sbi, ri); 428 if (err < 0) { 429 f2fs_put_page(node_page, 1); 430 return err; 431 } 432 if (!err) 433 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 434 } 435 436 if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) 437 fi->last_disk_size = inode->i_size; 438 439 if (fi->i_flags & F2FS_PROJINHERIT_FL) 440 set_inode_flag(inode, FI_PROJ_INHERIT); 441 442 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && 443 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 444 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 445 else 446 i_projid = F2FS_DEF_PROJID; 447 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 448 449 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && 450 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 451 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 452 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 453 } 454 455 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && 456 (fi->i_flags & F2FS_COMPR_FL)) { 457 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, 458 i_log_cluster_size)) { 459 atomic_set(&fi->i_compr_blocks, 460 le64_to_cpu(ri->i_compr_blocks)); 461 fi->i_compress_algorithm = ri->i_compress_algorithm; 462 fi->i_log_cluster_size = ri->i_log_cluster_size; 463 fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag); 464 fi->i_cluster_size = 1 << fi->i_log_cluster_size; 465 set_inode_flag(inode, FI_COMPRESSED_FILE); 466 } 467 } 468 469 F2FS_I(inode)->i_disk_time[0] = inode->i_atime; 470 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime; 471 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime; 472 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime; 473 f2fs_put_page(node_page, 1); 474 475 stat_inc_inline_xattr(inode); 476 stat_inc_inline_inode(inode); 477 stat_inc_inline_dir(inode); 478 stat_inc_compr_inode(inode); 479 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); 480 481 return 0; 482 } 483 484 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 485 { 486 struct f2fs_sb_info *sbi = F2FS_SB(sb); 487 struct inode *inode; 488 int ret = 0; 489 490 inode = iget_locked(sb, ino); 491 if (!inode) 492 return ERR_PTR(-ENOMEM); 493 494 if (!(inode->i_state & I_NEW)) { 495 trace_f2fs_iget(inode); 496 return inode; 497 } 498 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) 499 goto make_now; 500 501 #ifdef CONFIG_F2FS_FS_COMPRESSION 502 if (ino == F2FS_COMPRESS_INO(sbi)) 503 goto make_now; 504 #endif 505 506 ret = do_read_inode(inode); 507 if (ret) 508 goto bad_inode; 509 make_now: 510 if (ino == F2FS_NODE_INO(sbi)) { 511 inode->i_mapping->a_ops = &f2fs_node_aops; 512 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 513 } else if (ino == F2FS_META_INO(sbi)) { 514 inode->i_mapping->a_ops = &f2fs_meta_aops; 515 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 516 } else if (ino == F2FS_COMPRESS_INO(sbi)) { 517 #ifdef CONFIG_F2FS_FS_COMPRESSION 518 inode->i_mapping->a_ops = &f2fs_compress_aops; 519 /* 520 * generic_error_remove_page only truncates pages of regular 521 * inode 522 */ 523 inode->i_mode |= S_IFREG; 524 #endif 525 mapping_set_gfp_mask(inode->i_mapping, 526 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); 527 } else if (S_ISREG(inode->i_mode)) { 528 inode->i_op = &f2fs_file_inode_operations; 529 inode->i_fop = &f2fs_file_operations; 530 inode->i_mapping->a_ops = &f2fs_dblock_aops; 531 } else if (S_ISDIR(inode->i_mode)) { 532 inode->i_op = &f2fs_dir_inode_operations; 533 inode->i_fop = &f2fs_dir_operations; 534 inode->i_mapping->a_ops = &f2fs_dblock_aops; 535 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 536 } else if (S_ISLNK(inode->i_mode)) { 537 if (file_is_encrypt(inode)) 538 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 539 else 540 inode->i_op = &f2fs_symlink_inode_operations; 541 inode_nohighmem(inode); 542 inode->i_mapping->a_ops = &f2fs_dblock_aops; 543 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 544 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 545 inode->i_op = &f2fs_special_inode_operations; 546 init_special_inode(inode, inode->i_mode, inode->i_rdev); 547 } else { 548 ret = -EIO; 549 goto bad_inode; 550 } 551 f2fs_set_inode_flags(inode); 552 553 if (file_should_truncate(inode)) { 554 ret = f2fs_truncate(inode); 555 if (ret) 556 goto bad_inode; 557 file_dont_truncate(inode); 558 } 559 560 unlock_new_inode(inode); 561 trace_f2fs_iget(inode); 562 return inode; 563 564 bad_inode: 565 f2fs_inode_synced(inode); 566 iget_failed(inode); 567 trace_f2fs_iget_exit(inode, ret); 568 return ERR_PTR(ret); 569 } 570 571 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 572 { 573 struct inode *inode; 574 retry: 575 inode = f2fs_iget(sb, ino); 576 if (IS_ERR(inode)) { 577 if (PTR_ERR(inode) == -ENOMEM) { 578 memalloc_retry_wait(GFP_NOFS); 579 goto retry; 580 } 581 } 582 return inode; 583 } 584 585 void f2fs_update_inode(struct inode *inode, struct page *node_page) 586 { 587 struct f2fs_inode *ri; 588 struct extent_tree *et = F2FS_I(inode)->extent_tree; 589 590 f2fs_wait_on_page_writeback(node_page, NODE, true, true); 591 set_page_dirty(node_page); 592 593 f2fs_inode_synced(inode); 594 595 ri = F2FS_INODE(node_page); 596 597 ri->i_mode = cpu_to_le16(inode->i_mode); 598 ri->i_advise = F2FS_I(inode)->i_advise; 599 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 600 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 601 ri->i_links = cpu_to_le32(inode->i_nlink); 602 ri->i_size = cpu_to_le64(i_size_read(inode)); 603 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 604 605 if (et) { 606 read_lock(&et->lock); 607 set_raw_extent(&et->largest, &ri->i_ext); 608 read_unlock(&et->lock); 609 } else { 610 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 611 } 612 set_raw_inline(inode, ri); 613 614 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 615 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); 616 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 617 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 618 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); 619 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 620 if (S_ISDIR(inode->i_mode)) 621 ri->i_current_depth = 622 cpu_to_le32(F2FS_I(inode)->i_current_depth); 623 else if (S_ISREG(inode->i_mode)) 624 ri->i_gc_failures = 625 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); 626 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 627 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 628 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 629 ri->i_generation = cpu_to_le32(inode->i_generation); 630 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 631 632 if (f2fs_has_extra_attr(inode)) { 633 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 634 635 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) 636 ri->i_inline_xattr_size = 637 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 638 639 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && 640 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 641 i_projid)) { 642 projid_t i_projid; 643 644 i_projid = from_kprojid(&init_user_ns, 645 F2FS_I(inode)->i_projid); 646 ri->i_projid = cpu_to_le32(i_projid); 647 } 648 649 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 650 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 651 i_crtime)) { 652 ri->i_crtime = 653 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 654 ri->i_crtime_nsec = 655 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 656 } 657 658 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && 659 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 660 i_log_cluster_size)) { 661 ri->i_compr_blocks = 662 cpu_to_le64(atomic_read( 663 &F2FS_I(inode)->i_compr_blocks)); 664 ri->i_compress_algorithm = 665 F2FS_I(inode)->i_compress_algorithm; 666 ri->i_compress_flag = 667 cpu_to_le16(F2FS_I(inode)->i_compress_flag); 668 ri->i_log_cluster_size = 669 F2FS_I(inode)->i_log_cluster_size; 670 } 671 } 672 673 __set_inode_rdev(inode, ri); 674 675 /* deleted inode */ 676 if (inode->i_nlink == 0) 677 clear_page_private_inline(node_page); 678 679 F2FS_I(inode)->i_disk_time[0] = inode->i_atime; 680 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime; 681 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime; 682 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime; 683 684 #ifdef CONFIG_F2FS_CHECK_FS 685 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); 686 #endif 687 } 688 689 void f2fs_update_inode_page(struct inode *inode) 690 { 691 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 692 struct page *node_page; 693 retry: 694 node_page = f2fs_get_node_page(sbi, inode->i_ino); 695 if (IS_ERR(node_page)) { 696 int err = PTR_ERR(node_page); 697 698 if (err == -ENOMEM) { 699 cond_resched(); 700 goto retry; 701 } else if (err != -ENOENT) { 702 f2fs_stop_checkpoint(sbi, false); 703 } 704 return; 705 } 706 f2fs_update_inode(inode, node_page); 707 f2fs_put_page(node_page, 1); 708 } 709 710 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 711 { 712 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 713 714 if (inode->i_ino == F2FS_NODE_INO(sbi) || 715 inode->i_ino == F2FS_META_INO(sbi)) 716 return 0; 717 718 /* 719 * atime could be updated without dirtying f2fs inode in lazytime mode 720 */ 721 if (f2fs_is_time_consistent(inode) && 722 !is_inode_flag_set(inode, FI_DIRTY_INODE)) 723 return 0; 724 725 if (!f2fs_is_checkpoint_ready(sbi)) 726 return -ENOSPC; 727 728 /* 729 * We need to balance fs here to prevent from producing dirty node pages 730 * during the urgent cleaning time when running out of free sections. 731 */ 732 f2fs_update_inode_page(inode); 733 if (wbc && wbc->nr_to_write) 734 f2fs_balance_fs(sbi, true); 735 return 0; 736 } 737 738 /* 739 * Called at the last iput() if i_nlink is zero 740 */ 741 void f2fs_evict_inode(struct inode *inode) 742 { 743 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 744 nid_t xnid = F2FS_I(inode)->i_xattr_nid; 745 int err = 0; 746 747 /* some remained atomic pages should discarded */ 748 if (f2fs_is_atomic_file(inode)) 749 f2fs_drop_inmem_pages(inode); 750 751 trace_f2fs_evict_inode(inode); 752 truncate_inode_pages_final(&inode->i_data); 753 754 if ((inode->i_nlink || is_bad_inode(inode)) && 755 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) 756 f2fs_invalidate_compress_pages(sbi, inode->i_ino); 757 758 if (inode->i_ino == F2FS_NODE_INO(sbi) || 759 inode->i_ino == F2FS_META_INO(sbi) || 760 inode->i_ino == F2FS_COMPRESS_INO(sbi)) 761 goto out_clear; 762 763 f2fs_bug_on(sbi, get_dirty_pages(inode)); 764 f2fs_remove_dirty_inode(inode); 765 766 f2fs_destroy_extent_tree(inode); 767 768 if (inode->i_nlink || is_bad_inode(inode)) 769 goto no_delete; 770 771 err = f2fs_dquot_initialize(inode); 772 if (err) { 773 err = 0; 774 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 775 } 776 777 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 778 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 779 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 780 781 sb_start_intwrite(inode->i_sb); 782 set_inode_flag(inode, FI_NO_ALLOC); 783 i_size_write(inode, 0); 784 retry: 785 if (F2FS_HAS_BLOCKS(inode)) 786 err = f2fs_truncate(inode); 787 788 if (time_to_inject(sbi, FAULT_EVICT_INODE)) { 789 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE); 790 err = -EIO; 791 } 792 793 if (!err) { 794 f2fs_lock_op(sbi); 795 err = f2fs_remove_inode_page(inode); 796 f2fs_unlock_op(sbi); 797 if (err == -ENOENT) 798 err = 0; 799 } 800 801 /* give more chances, if ENOMEM case */ 802 if (err == -ENOMEM) { 803 err = 0; 804 goto retry; 805 } 806 807 if (err) { 808 f2fs_update_inode_page(inode); 809 if (dquot_initialize_needed(inode)) 810 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 811 } 812 sb_end_intwrite(inode->i_sb); 813 no_delete: 814 dquot_drop(inode); 815 816 stat_dec_inline_xattr(inode); 817 stat_dec_inline_dir(inode); 818 stat_dec_inline_inode(inode); 819 stat_dec_compr_inode(inode); 820 stat_sub_compr_blocks(inode, 821 atomic_read(&F2FS_I(inode)->i_compr_blocks)); 822 823 if (likely(!f2fs_cp_error(sbi) && 824 !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 825 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 826 else 827 f2fs_inode_synced(inode); 828 829 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ 830 if (inode->i_ino) 831 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 832 inode->i_ino); 833 if (xnid) 834 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 835 if (inode->i_nlink) { 836 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 837 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); 838 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 839 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 840 } 841 if (is_inode_flag_set(inode, FI_FREE_NID)) { 842 f2fs_alloc_nid_failed(sbi, inode->i_ino); 843 clear_inode_flag(inode, FI_FREE_NID); 844 } else { 845 /* 846 * If xattr nid is corrupted, we can reach out error condition, 847 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). 848 * In that case, f2fs_check_nid_range() is enough to give a clue. 849 */ 850 } 851 out_clear: 852 fscrypt_put_encryption_info(inode); 853 fsverity_cleanup_inode(inode); 854 clear_inode(inode); 855 } 856 857 /* caller should call f2fs_lock_op() */ 858 void f2fs_handle_failed_inode(struct inode *inode) 859 { 860 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 861 struct node_info ni; 862 int err; 863 864 /* 865 * clear nlink of inode in order to release resource of inode 866 * immediately. 867 */ 868 clear_nlink(inode); 869 870 /* 871 * we must call this to avoid inode being remained as dirty, resulting 872 * in a panic when flushing dirty inodes in gdirty_list. 873 */ 874 f2fs_update_inode_page(inode); 875 f2fs_inode_synced(inode); 876 877 /* don't make bad inode, since it becomes a regular file. */ 878 unlock_new_inode(inode); 879 880 /* 881 * Note: we should add inode to orphan list before f2fs_unlock_op() 882 * so we can prevent losing this orphan when encoutering checkpoint 883 * and following suddenly power-off. 884 */ 885 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); 886 if (err) { 887 set_sbi_flag(sbi, SBI_NEED_FSCK); 888 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); 889 goto out; 890 } 891 892 if (ni.blk_addr != NULL_ADDR) { 893 err = f2fs_acquire_orphan_inode(sbi); 894 if (err) { 895 set_sbi_flag(sbi, SBI_NEED_FSCK); 896 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); 897 } else { 898 f2fs_add_orphan_inode(inode); 899 } 900 f2fs_alloc_nid_done(sbi, inode->i_ino); 901 } else { 902 set_inode_flag(inode, FI_FREE_NID); 903 } 904 905 out: 906 f2fs_unlock_op(sbi); 907 908 /* iput will drop the inode object */ 909 iput(inode); 910 } 911