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1// SPDX-License-Identifier: GPL-2.02/*3 * fs/f2fs/inode.c4 *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/writeback.h>11#include <linux/sched/mm.h>12#include <linux/lz4.h>13#include <linux/zstd.h>14 15#include "f2fs.h"16#include "node.h"17#include "segment.h"18#include "xattr.h"19 20#include <trace/events/f2fs.h>21 22#ifdef CONFIG_F2FS_FS_COMPRESSION23extern const struct address_space_operations f2fs_compress_aops;24#endif25 26void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)27{28 if (is_inode_flag_set(inode, FI_NEW_INODE))29 return;30 31 if (f2fs_readonly(F2FS_I_SB(inode)->sb))32 return;33 34 if (f2fs_inode_dirtied(inode, sync))35 return;36 37 if (f2fs_is_atomic_file(inode)) {38 set_inode_flag(inode, FI_ATOMIC_DIRTIED);39 return;40 }41 42 mark_inode_dirty_sync(inode);43}44 45void f2fs_set_inode_flags(struct inode *inode)46{47 unsigned int flags = F2FS_I(inode)->i_flags;48 unsigned int new_fl = 0;49 50 if (flags & F2FS_SYNC_FL)51 new_fl |= S_SYNC;52 if (flags & F2FS_APPEND_FL)53 new_fl |= S_APPEND;54 if (flags & F2FS_IMMUTABLE_FL)55 new_fl |= S_IMMUTABLE;56 if (flags & F2FS_NOATIME_FL)57 new_fl |= S_NOATIME;58 if (flags & F2FS_DIRSYNC_FL)59 new_fl |= S_DIRSYNC;60 if (file_is_encrypt(inode))61 new_fl |= S_ENCRYPTED;62 if (file_is_verity(inode))63 new_fl |= S_VERITY;64 if (flags & F2FS_CASEFOLD_FL)65 new_fl |= S_CASEFOLD;66 inode_set_flags(inode, new_fl,67 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|68 S_ENCRYPTED|S_VERITY|S_CASEFOLD);69}70 71static void __get_inode_rdev(struct inode *inode, struct page *node_page)72{73 __le32 *addr = get_dnode_addr(inode, node_page);74 75 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||76 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {77 if (addr[0])78 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0]));79 else80 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1]));81 }82}83 84static void __set_inode_rdev(struct inode *inode, struct page *node_page)85{86 __le32 *addr = get_dnode_addr(inode, node_page);87 88 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {89 if (old_valid_dev(inode->i_rdev)) {90 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));91 addr[1] = 0;92 } else {93 addr[0] = 0;94 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));95 addr[2] = 0;96 }97 }98}99 100static void __recover_inline_status(struct inode *inode, struct page *ipage)101{102 void *inline_data = inline_data_addr(inode, ipage);103 __le32 *start = inline_data;104 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);105 106 while (start < end) {107 if (*start++) {108 f2fs_wait_on_page_writeback(ipage, NODE, true, true);109 110 set_inode_flag(inode, FI_DATA_EXIST);111 set_raw_inline(inode, F2FS_INODE(ipage));112 set_page_dirty(ipage);113 return;114 }115 }116 return;117}118 119static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)120{121 struct f2fs_inode *ri = &F2FS_NODE(page)->i;122 123 if (!f2fs_sb_has_inode_chksum(sbi))124 return false;125 126 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))127 return false;128 129 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),130 i_inode_checksum))131 return false;132 133 return true;134}135 136static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)137{138 struct f2fs_node *node = F2FS_NODE(page);139 struct f2fs_inode *ri = &node->i;140 __le32 ino = node->footer.ino;141 __le32 gen = ri->i_generation;142 __u32 chksum, chksum_seed;143 __u32 dummy_cs = 0;144 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);145 unsigned int cs_size = sizeof(dummy_cs);146 147 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,148 sizeof(ino));149 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));150 151 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);152 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);153 offset += cs_size;154 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,155 F2FS_BLKSIZE - offset);156 return chksum;157}158 159bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)160{161 struct f2fs_inode *ri;162 __u32 provided, calculated;163 164 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))165 return true;166 167#ifdef CONFIG_F2FS_CHECK_FS168 if (!f2fs_enable_inode_chksum(sbi, page))169#else170 if (!f2fs_enable_inode_chksum(sbi, page) ||171 PageDirty(page) ||172 folio_test_writeback(page_folio(page)))173#endif174 return true;175 176 ri = &F2FS_NODE(page)->i;177 provided = le32_to_cpu(ri->i_inode_checksum);178 calculated = f2fs_inode_chksum(sbi, page);179 180 if (provided != calculated)181 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",182 page_folio(page)->index, ino_of_node(page),183 provided, calculated);184 185 return provided == calculated;186}187 188void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)189{190 struct f2fs_inode *ri = &F2FS_NODE(page)->i;191 192 if (!f2fs_enable_inode_chksum(sbi, page))193 return;194 195 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));196}197 198static bool sanity_check_compress_inode(struct inode *inode,199 struct f2fs_inode *ri)200{201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);202 unsigned char clevel;203 204 if (ri->i_compress_algorithm >= COMPRESS_MAX) {205 f2fs_warn(sbi,206 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix",207 __func__, inode->i_ino, ri->i_compress_algorithm);208 return false;209 }210 if (le64_to_cpu(ri->i_compr_blocks) >211 SECTOR_TO_BLOCK(inode->i_blocks)) {212 f2fs_warn(sbi,213 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",214 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks),215 SECTOR_TO_BLOCK(inode->i_blocks));216 return false;217 }218 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||219 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {220 f2fs_warn(sbi,221 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix",222 __func__, inode->i_ino, ri->i_log_cluster_size);223 return false;224 }225 226 clevel = le16_to_cpu(ri->i_compress_flag) >>227 COMPRESS_LEVEL_OFFSET;228 switch (ri->i_compress_algorithm) {229 case COMPRESS_LZO:230#ifdef CONFIG_F2FS_FS_LZO231 if (clevel)232 goto err_level;233#endif234 break;235 case COMPRESS_LZORLE:236#ifdef CONFIG_F2FS_FS_LZORLE237 if (clevel)238 goto err_level;239#endif240 break;241 case COMPRESS_LZ4:242#ifdef CONFIG_F2FS_FS_LZ4243#ifdef CONFIG_F2FS_FS_LZ4HC244 if (clevel &&245 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))246 goto err_level;247#else248 if (clevel)249 goto err_level;250#endif251#endif252 break;253 case COMPRESS_ZSTD:254#ifdef CONFIG_F2FS_FS_ZSTD255 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel())256 goto err_level;257#endif258 break;259 default:260 goto err_level;261 }262 263 return true;264err_level:265 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix",266 __func__, inode->i_ino, clevel);267 return false;268}269 270static bool sanity_check_inode(struct inode *inode, struct page *node_page)271{272 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);273 struct f2fs_inode_info *fi = F2FS_I(inode);274 struct f2fs_inode *ri = F2FS_INODE(node_page);275 unsigned long long iblocks;276 277 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);278 if (!iblocks) {279 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",280 __func__, inode->i_ino, iblocks);281 return false;282 }283 284 if (ino_of_node(node_page) != nid_of_node(node_page)) {285 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",286 __func__, inode->i_ino,287 ino_of_node(node_page), nid_of_node(node_page));288 return false;289 }290 291 if (f2fs_has_extra_attr(inode)) {292 if (!f2fs_sb_has_extra_attr(sbi)) {293 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",294 __func__, inode->i_ino);295 return false;296 }297 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||298 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE ||299 fi->i_extra_isize % sizeof(__le32)) {300 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",301 __func__, inode->i_ino, fi->i_extra_isize,302 F2FS_TOTAL_EXTRA_ATTR_SIZE);303 return false;304 }305 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&306 f2fs_has_inline_xattr(inode) &&307 (!fi->i_inline_xattr_size ||308 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {309 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %lu",310 __func__, inode->i_ino, fi->i_inline_xattr_size,311 MAX_INLINE_XATTR_SIZE);312 return false;313 }314 if (f2fs_sb_has_compression(sbi) &&315 fi->i_flags & F2FS_COMPR_FL &&316 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,317 i_compress_flag)) {318 if (!sanity_check_compress_inode(inode, ri))319 return false;320 }321 }322 323 if (!f2fs_sb_has_extra_attr(sbi)) {324 if (f2fs_sb_has_project_quota(sbi)) {325 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",326 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA);327 return false;328 }329 if (f2fs_sb_has_inode_chksum(sbi)) {330 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",331 __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM);332 return false;333 }334 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {335 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",336 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);337 return false;338 }339 if (f2fs_sb_has_inode_crtime(sbi)) {340 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",341 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME);342 return false;343 }344 if (f2fs_sb_has_compression(sbi)) {345 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",346 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION);347 return false;348 }349 }350 351 if (f2fs_sanity_check_inline_data(inode, node_page)) {352 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",353 __func__, inode->i_ino, inode->i_mode);354 return false;355 }356 357 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {358 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",359 __func__, inode->i_ino, inode->i_mode);360 return false;361 }362 363 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {364 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",365 __func__, inode->i_ino);366 return false;367 }368 369 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {370 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",371 __func__, inode->i_ino, fi->i_xattr_nid);372 return false;373 }374 375 return true;376}377 378static void init_idisk_time(struct inode *inode)379{380 struct f2fs_inode_info *fi = F2FS_I(inode);381 382 fi->i_disk_time[0] = inode_get_atime(inode);383 fi->i_disk_time[1] = inode_get_ctime(inode);384 fi->i_disk_time[2] = inode_get_mtime(inode);385}386 387static int do_read_inode(struct inode *inode)388{389 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);390 struct f2fs_inode_info *fi = F2FS_I(inode);391 struct page *node_page;392 struct f2fs_inode *ri;393 projid_t i_projid;394 395 /* Check if ino is within scope */396 if (f2fs_check_nid_range(sbi, inode->i_ino))397 return -EINVAL;398 399 node_page = f2fs_get_node_page(sbi, inode->i_ino);400 if (IS_ERR(node_page))401 return PTR_ERR(node_page);402 403 ri = F2FS_INODE(node_page);404 405 inode->i_mode = le16_to_cpu(ri->i_mode);406 i_uid_write(inode, le32_to_cpu(ri->i_uid));407 i_gid_write(inode, le32_to_cpu(ri->i_gid));408 set_nlink(inode, le32_to_cpu(ri->i_links));409 inode->i_size = le64_to_cpu(ri->i_size);410 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);411 412 inode_set_atime(inode, le64_to_cpu(ri->i_atime),413 le32_to_cpu(ri->i_atime_nsec));414 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime),415 le32_to_cpu(ri->i_ctime_nsec));416 inode_set_mtime(inode, le64_to_cpu(ri->i_mtime),417 le32_to_cpu(ri->i_mtime_nsec));418 inode->i_generation = le32_to_cpu(ri->i_generation);419 if (S_ISDIR(inode->i_mode))420 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);421 else if (S_ISREG(inode->i_mode))422 fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures);423 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);424 fi->i_flags = le32_to_cpu(ri->i_flags);425 if (S_ISREG(inode->i_mode))426 fi->i_flags &= ~F2FS_PROJINHERIT_FL;427 bitmap_zero(fi->flags, FI_MAX);428 fi->i_advise = ri->i_advise;429 fi->i_pino = le32_to_cpu(ri->i_pino);430 fi->i_dir_level = ri->i_dir_level;431 432 get_inline_info(inode, ri);433 434 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?435 le16_to_cpu(ri->i_extra_isize) : 0;436 437 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {438 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);439 } else if (f2fs_has_inline_xattr(inode) ||440 f2fs_has_inline_dentry(inode)) {441 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;442 } else {443 444 /*445 * Previous inline data or directory always reserved 200 bytes446 * in inode layout, even if inline_xattr is disabled. In order447 * to keep inline_dentry's structure for backward compatibility,448 * we get the space back only from inline_data.449 */450 fi->i_inline_xattr_size = 0;451 }452 453 if (!sanity_check_inode(inode, node_page)) {454 f2fs_put_page(node_page, 1);455 set_sbi_flag(sbi, SBI_NEED_FSCK);456 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);457 return -EFSCORRUPTED;458 }459 460 /* check data exist */461 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))462 __recover_inline_status(inode, node_page);463 464 /* try to recover cold bit for non-dir inode */465 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {466 f2fs_wait_on_page_writeback(node_page, NODE, true, true);467 set_cold_node(node_page, false);468 set_page_dirty(node_page);469 }470 471 /* get rdev by using inline_info */472 __get_inode_rdev(inode, node_page);473 474 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))475 fi->last_disk_size = inode->i_size;476 477 if (fi->i_flags & F2FS_PROJINHERIT_FL)478 set_inode_flag(inode, FI_PROJ_INHERIT);479 480 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&481 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))482 i_projid = (projid_t)le32_to_cpu(ri->i_projid);483 else484 i_projid = F2FS_DEF_PROJID;485 fi->i_projid = make_kprojid(&init_user_ns, i_projid);486 487 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&488 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {489 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);490 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);491 }492 493 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&494 (fi->i_flags & F2FS_COMPR_FL)) {495 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,496 i_compress_flag)) {497 unsigned short compress_flag;498 499 atomic_set(&fi->i_compr_blocks,500 le64_to_cpu(ri->i_compr_blocks));501 fi->i_compress_algorithm = ri->i_compress_algorithm;502 fi->i_log_cluster_size = ri->i_log_cluster_size;503 compress_flag = le16_to_cpu(ri->i_compress_flag);504 fi->i_compress_level = compress_flag >>505 COMPRESS_LEVEL_OFFSET;506 fi->i_compress_flag = compress_flag &507 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);508 fi->i_cluster_size = BIT(fi->i_log_cluster_size);509 set_inode_flag(inode, FI_COMPRESSED_FILE);510 }511 }512 513 init_idisk_time(inode);514 515 if (!sanity_check_extent_cache(inode, node_page)) {516 f2fs_put_page(node_page, 1);517 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);518 return -EFSCORRUPTED;519 }520 521 /* Need all the flag bits */522 f2fs_init_read_extent_tree(inode, node_page);523 f2fs_init_age_extent_tree(inode);524 525 f2fs_put_page(node_page, 1);526 527 stat_inc_inline_xattr(inode);528 stat_inc_inline_inode(inode);529 stat_inc_inline_dir(inode);530 stat_inc_compr_inode(inode);531 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));532 533 return 0;534}535 536static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)537{538 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||539 ino == F2FS_COMPRESS_INO(sbi);540}541 542struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)543{544 struct f2fs_sb_info *sbi = F2FS_SB(sb);545 struct inode *inode;546 int ret = 0;547 548 inode = iget_locked(sb, ino);549 if (!inode)550 return ERR_PTR(-ENOMEM);551 552 if (!(inode->i_state & I_NEW)) {553 if (is_meta_ino(sbi, ino)) {554 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);555 set_sbi_flag(sbi, SBI_NEED_FSCK);556 ret = -EFSCORRUPTED;557 trace_f2fs_iget_exit(inode, ret);558 iput(inode);559 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);560 return ERR_PTR(ret);561 }562 563 trace_f2fs_iget(inode);564 return inode;565 }566 567 if (is_meta_ino(sbi, ino))568 goto make_now;569 570 ret = do_read_inode(inode);571 if (ret)572 goto bad_inode;573make_now:574 if (ino == F2FS_NODE_INO(sbi)) {575 inode->i_mapping->a_ops = &f2fs_node_aops;576 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);577 } else if (ino == F2FS_META_INO(sbi)) {578 inode->i_mapping->a_ops = &f2fs_meta_aops;579 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);580 } else if (ino == F2FS_COMPRESS_INO(sbi)) {581#ifdef CONFIG_F2FS_FS_COMPRESSION582 inode->i_mapping->a_ops = &f2fs_compress_aops;583 /*584 * generic_error_remove_folio only truncates pages of regular585 * inode586 */587 inode->i_mode |= S_IFREG;588#endif589 mapping_set_gfp_mask(inode->i_mapping,590 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);591 } else if (S_ISREG(inode->i_mode)) {592 inode->i_op = &f2fs_file_inode_operations;593 inode->i_fop = &f2fs_file_operations;594 inode->i_mapping->a_ops = &f2fs_dblock_aops;595 } else if (S_ISDIR(inode->i_mode)) {596 inode->i_op = &f2fs_dir_inode_operations;597 inode->i_fop = &f2fs_dir_operations;598 inode->i_mapping->a_ops = &f2fs_dblock_aops;599 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);600 } else if (S_ISLNK(inode->i_mode)) {601 if (file_is_encrypt(inode))602 inode->i_op = &f2fs_encrypted_symlink_inode_operations;603 else604 inode->i_op = &f2fs_symlink_inode_operations;605 inode_nohighmem(inode);606 inode->i_mapping->a_ops = &f2fs_dblock_aops;607 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||608 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {609 inode->i_op = &f2fs_special_inode_operations;610 init_special_inode(inode, inode->i_mode, inode->i_rdev);611 } else {612 ret = -EIO;613 goto bad_inode;614 }615 f2fs_set_inode_flags(inode);616 617 unlock_new_inode(inode);618 trace_f2fs_iget(inode);619 return inode;620 621bad_inode:622 f2fs_inode_synced(inode);623 iget_failed(inode);624 trace_f2fs_iget_exit(inode, ret);625 return ERR_PTR(ret);626}627 628struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)629{630 struct inode *inode;631retry:632 inode = f2fs_iget(sb, ino);633 if (IS_ERR(inode)) {634 if (PTR_ERR(inode) == -ENOMEM) {635 memalloc_retry_wait(GFP_NOFS);636 goto retry;637 }638 }639 return inode;640}641 642void f2fs_update_inode(struct inode *inode, struct page *node_page)643{644 struct f2fs_inode_info *fi = F2FS_I(inode);645 struct f2fs_inode *ri;646 struct extent_tree *et = fi->extent_tree[EX_READ];647 648 f2fs_wait_on_page_writeback(node_page, NODE, true, true);649 set_page_dirty(node_page);650 651 f2fs_inode_synced(inode);652 653 ri = F2FS_INODE(node_page);654 655 ri->i_mode = cpu_to_le16(inode->i_mode);656 ri->i_advise = fi->i_advise;657 ri->i_uid = cpu_to_le32(i_uid_read(inode));658 ri->i_gid = cpu_to_le32(i_gid_read(inode));659 ri->i_links = cpu_to_le32(inode->i_nlink);660 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);661 662 if (!f2fs_is_atomic_file(inode) ||663 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))664 ri->i_size = cpu_to_le64(i_size_read(inode));665 666 if (et) {667 read_lock(&et->lock);668 set_raw_read_extent(&et->largest, &ri->i_ext);669 read_unlock(&et->lock);670 } else {671 memset(&ri->i_ext, 0, sizeof(ri->i_ext));672 }673 set_raw_inline(inode, ri);674 675 ri->i_atime = cpu_to_le64(inode_get_atime_sec(inode));676 ri->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode));677 ri->i_mtime = cpu_to_le64(inode_get_mtime_sec(inode));678 ri->i_atime_nsec = cpu_to_le32(inode_get_atime_nsec(inode));679 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode));680 ri->i_mtime_nsec = cpu_to_le32(inode_get_mtime_nsec(inode));681 if (S_ISDIR(inode->i_mode))682 ri->i_current_depth = cpu_to_le32(fi->i_current_depth);683 else if (S_ISREG(inode->i_mode))684 ri->i_gc_failures = cpu_to_le16(fi->i_gc_failures);685 ri->i_xattr_nid = cpu_to_le32(fi->i_xattr_nid);686 ri->i_flags = cpu_to_le32(fi->i_flags);687 ri->i_pino = cpu_to_le32(fi->i_pino);688 ri->i_generation = cpu_to_le32(inode->i_generation);689 ri->i_dir_level = fi->i_dir_level;690 691 if (f2fs_has_extra_attr(inode)) {692 ri->i_extra_isize = cpu_to_le16(fi->i_extra_isize);693 694 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))695 ri->i_inline_xattr_size =696 cpu_to_le16(fi->i_inline_xattr_size);697 698 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&699 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) {700 projid_t i_projid;701 702 i_projid = from_kprojid(&init_user_ns, fi->i_projid);703 ri->i_projid = cpu_to_le32(i_projid);704 }705 706 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&707 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {708 ri->i_crtime = cpu_to_le64(fi->i_crtime.tv_sec);709 ri->i_crtime_nsec = cpu_to_le32(fi->i_crtime.tv_nsec);710 }711 712 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&713 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,714 i_compress_flag)) {715 unsigned short compress_flag;716 717 ri->i_compr_blocks = cpu_to_le64(718 atomic_read(&fi->i_compr_blocks));719 ri->i_compress_algorithm = fi->i_compress_algorithm;720 compress_flag = fi->i_compress_flag |721 fi->i_compress_level <<722 COMPRESS_LEVEL_OFFSET;723 ri->i_compress_flag = cpu_to_le16(compress_flag);724 ri->i_log_cluster_size = fi->i_log_cluster_size;725 }726 }727 728 __set_inode_rdev(inode, node_page);729 730 /* deleted inode */731 if (inode->i_nlink == 0)732 clear_page_private_inline(node_page);733 734 init_idisk_time(inode);735#ifdef CONFIG_F2FS_CHECK_FS736 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);737#endif738}739 740void f2fs_update_inode_page(struct inode *inode)741{742 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);743 struct page *node_page;744 int count = 0;745retry:746 node_page = f2fs_get_node_page(sbi, inode->i_ino);747 if (IS_ERR(node_page)) {748 int err = PTR_ERR(node_page);749 750 /* The node block was truncated. */751 if (err == -ENOENT)752 return;753 754 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)755 goto retry;756 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);757 return;758 }759 f2fs_update_inode(inode, node_page);760 f2fs_put_page(node_page, 1);761}762 763int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)764{765 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);766 767 if (inode->i_ino == F2FS_NODE_INO(sbi) ||768 inode->i_ino == F2FS_META_INO(sbi))769 return 0;770 771 /*772 * atime could be updated without dirtying f2fs inode in lazytime mode773 */774 if (f2fs_is_time_consistent(inode) &&775 !is_inode_flag_set(inode, FI_DIRTY_INODE))776 return 0;777 778 if (!f2fs_is_checkpoint_ready(sbi))779 return -ENOSPC;780 781 /*782 * We need to balance fs here to prevent from producing dirty node pages783 * during the urgent cleaning time when running out of free sections.784 */785 f2fs_update_inode_page(inode);786 if (wbc && wbc->nr_to_write)787 f2fs_balance_fs(sbi, true);788 return 0;789}790 791/*792 * Called at the last iput() if i_nlink is zero793 */794void f2fs_evict_inode(struct inode *inode)795{796 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);797 struct f2fs_inode_info *fi = F2FS_I(inode);798 nid_t xnid = fi->i_xattr_nid;799 int err = 0;800 bool freeze_protected = false;801 802 f2fs_abort_atomic_write(inode, true);803 804 if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) {805 clear_inode_flag(fi->cow_inode, FI_COW_FILE);806 F2FS_I(fi->cow_inode)->atomic_inode = NULL;807 iput(fi->cow_inode);808 fi->cow_inode = NULL;809 }810 811 trace_f2fs_evict_inode(inode);812 truncate_inode_pages_final(&inode->i_data);813 814 if ((inode->i_nlink || is_bad_inode(inode)) &&815 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))816 f2fs_invalidate_compress_pages(sbi, inode->i_ino);817 818 if (inode->i_ino == F2FS_NODE_INO(sbi) ||819 inode->i_ino == F2FS_META_INO(sbi) ||820 inode->i_ino == F2FS_COMPRESS_INO(sbi))821 goto out_clear;822 823 f2fs_bug_on(sbi, get_dirty_pages(inode));824 f2fs_remove_dirty_inode(inode);825 826 f2fs_destroy_extent_tree(inode);827 828 if (inode->i_nlink || is_bad_inode(inode))829 goto no_delete;830 831 err = f2fs_dquot_initialize(inode);832 if (err) {833 err = 0;834 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);835 }836 837 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);838 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);839 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);840 841 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) {842 sb_start_intwrite(inode->i_sb);843 freeze_protected = true;844 }845 set_inode_flag(inode, FI_NO_ALLOC);846 i_size_write(inode, 0);847retry:848 if (F2FS_HAS_BLOCKS(inode))849 err = f2fs_truncate(inode);850 851 if (time_to_inject(sbi, FAULT_EVICT_INODE))852 err = -EIO;853 854 if (!err) {855 f2fs_lock_op(sbi);856 err = f2fs_remove_inode_page(inode);857 f2fs_unlock_op(sbi);858 if (err == -ENOENT) {859 err = 0;860 861 /*862 * in fuzzed image, another node may has the same863 * block address as inode's, if it was truncated864 * previously, truncation of inode node will fail.865 */866 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {867 f2fs_warn(F2FS_I_SB(inode),868 "f2fs_evict_inode: inconsistent node id, ino:%lu",869 inode->i_ino);870 f2fs_inode_synced(inode);871 set_sbi_flag(sbi, SBI_NEED_FSCK);872 }873 }874 }875 876 /* give more chances, if ENOMEM case */877 if (err == -ENOMEM) {878 err = 0;879 goto retry;880 }881 882 if (err) {883 f2fs_update_inode_page(inode);884 if (dquot_initialize_needed(inode))885 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);886 }887 if (freeze_protected)888 sb_end_intwrite(inode->i_sb);889no_delete:890 dquot_drop(inode);891 892 stat_dec_inline_xattr(inode);893 stat_dec_inline_dir(inode);894 stat_dec_inline_inode(inode);895 stat_dec_compr_inode(inode);896 stat_sub_compr_blocks(inode,897 atomic_read(&fi->i_compr_blocks));898 899 if (likely(!f2fs_cp_error(sbi) &&900 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))901 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));902 else903 f2fs_inode_synced(inode);904 905 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */906 if (inode->i_ino)907 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,908 inode->i_ino);909 if (xnid)910 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);911 if (inode->i_nlink) {912 if (is_inode_flag_set(inode, FI_APPEND_WRITE))913 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);914 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))915 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);916 }917 if (is_inode_flag_set(inode, FI_FREE_NID)) {918 f2fs_alloc_nid_failed(sbi, inode->i_ino);919 clear_inode_flag(inode, FI_FREE_NID);920 } else {921 /*922 * If xattr nid is corrupted, we can reach out error condition,923 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).924 * In that case, f2fs_check_nid_range() is enough to give a clue.925 */926 }927out_clear:928 fscrypt_put_encryption_info(inode);929 fsverity_cleanup_inode(inode);930 clear_inode(inode);931}932 933/* caller should call f2fs_lock_op() */934void f2fs_handle_failed_inode(struct inode *inode)935{936 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);937 struct node_info ni;938 int err;939 940 /*941 * clear nlink of inode in order to release resource of inode942 * immediately.943 */944 clear_nlink(inode);945 946 /*947 * we must call this to avoid inode being remained as dirty, resulting948 * in a panic when flushing dirty inodes in gdirty_list.949 */950 f2fs_update_inode_page(inode);951 f2fs_inode_synced(inode);952 953 /* don't make bad inode, since it becomes a regular file. */954 unlock_new_inode(inode);955 956 /*957 * Note: we should add inode to orphan list before f2fs_unlock_op()958 * so we can prevent losing this orphan when encoutering checkpoint959 * and following suddenly power-off.960 */961 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);962 if (err) {963 set_sbi_flag(sbi, SBI_NEED_FSCK);964 set_inode_flag(inode, FI_FREE_NID);965 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");966 goto out;967 }968 969 if (ni.blk_addr != NULL_ADDR) {970 err = f2fs_acquire_orphan_inode(sbi);971 if (err) {972 set_sbi_flag(sbi, SBI_NEED_FSCK);973 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");974 } else {975 f2fs_add_orphan_inode(inode);976 }977 f2fs_alloc_nid_done(sbi, inode->i_ino);978 } else {979 set_inode_flag(inode, FI_FREE_NID);980 }981 982out:983 f2fs_unlock_op(sbi);984 985 /* iput will drop the inode object */986 iput(inode);987}988