diff options
Diffstat (limited to 'fs/f2fs/inode.c')
| -rw-r--r-- | fs/f2fs/inode.c | 1019 |
1 files changed, 1019 insertions, 0 deletions
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c new file mode 100644 index 0000000000..cde243840a --- /dev/null +++ b/fs/f2fs/inode.c @@ -0,0 +1,1019 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * fs/f2fs/inode.c + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + */ +#include <linux/fs.h> +#include <linux/f2fs_fs.h> +#include <linux/buffer_head.h> +#include <linux/writeback.h> +#include <linux/sched/mm.h> +#include <linux/lz4.h> +#include <linux/zstd.h> + +#include "f2fs.h" +#include "node.h" +#include "segment.h" +#include "xattr.h" + +#include <trace/events/f2fs.h> + +#ifdef CONFIG_F2FS_FS_COMPRESSION +extern const struct address_space_operations f2fs_compress_aops; +#endif + +void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync) +{ + if (is_inode_flag_set(inode, FI_NEW_INODE)) + return; + + if (f2fs_inode_dirtied(inode, sync)) + return; + + mark_inode_dirty_sync(inode); +} + +void f2fs_set_inode_flags(struct inode *inode) +{ + unsigned int flags = F2FS_I(inode)->i_flags; + unsigned int new_fl = 0; + + if (flags & F2FS_SYNC_FL) + new_fl |= S_SYNC; + if (flags & F2FS_APPEND_FL) + new_fl |= S_APPEND; + if (flags & F2FS_IMMUTABLE_FL) + new_fl |= S_IMMUTABLE; + if (flags & F2FS_NOATIME_FL) + new_fl |= S_NOATIME; + if (flags & F2FS_DIRSYNC_FL) + new_fl |= S_DIRSYNC; + if (file_is_encrypt(inode)) + new_fl |= S_ENCRYPTED; + if (file_is_verity(inode)) + new_fl |= S_VERITY; + if (flags & F2FS_CASEFOLD_FL) + new_fl |= S_CASEFOLD; + inode_set_flags(inode, new_fl, + S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC| + S_ENCRYPTED|S_VERITY|S_CASEFOLD); +} + +static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) +{ + int extra_size = get_extra_isize(inode); + + if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || + S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { + if (ri->i_addr[extra_size]) + inode->i_rdev = old_decode_dev( + le32_to_cpu(ri->i_addr[extra_size])); + else + inode->i_rdev = new_decode_dev( + le32_to_cpu(ri->i_addr[extra_size + 1])); + } +} + +static int __written_first_block(struct f2fs_sb_info *sbi, + struct f2fs_inode *ri) +{ + block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]); + + if (!__is_valid_data_blkaddr(addr)) + return 1; + if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE)) { + f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); + return -EFSCORRUPTED; + } + return 0; +} + +static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) +{ + int extra_size = get_extra_isize(inode); + + if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { + if (old_valid_dev(inode->i_rdev)) { + ri->i_addr[extra_size] = + cpu_to_le32(old_encode_dev(inode->i_rdev)); + ri->i_addr[extra_size + 1] = 0; + } else { + ri->i_addr[extra_size] = 0; + ri->i_addr[extra_size + 1] = + cpu_to_le32(new_encode_dev(inode->i_rdev)); + ri->i_addr[extra_size + 2] = 0; + } + } +} + +static void __recover_inline_status(struct inode *inode, struct page *ipage) +{ + void *inline_data = inline_data_addr(inode, ipage); + __le32 *start = inline_data; + __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); + + while (start < end) { + if (*start++) { + f2fs_wait_on_page_writeback(ipage, NODE, true, true); + + set_inode_flag(inode, FI_DATA_EXIST); + set_raw_inline(inode, F2FS_INODE(ipage)); + set_page_dirty(ipage); + return; + } + } + return; +} + +static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) +{ + struct f2fs_inode *ri = &F2FS_NODE(page)->i; + + if (!f2fs_sb_has_inode_chksum(sbi)) + return false; + + if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR)) + return false; + + if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize), + i_inode_checksum)) + return false; + + return true; +} + +static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) +{ + struct f2fs_node *node = F2FS_NODE(page); + struct f2fs_inode *ri = &node->i; + __le32 ino = node->footer.ino; + __le32 gen = ri->i_generation; + __u32 chksum, chksum_seed; + __u32 dummy_cs = 0; + unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); + unsigned int cs_size = sizeof(dummy_cs); + + chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, + sizeof(ino)); + chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); + + chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); + chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); + offset += cs_size; + chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, + F2FS_BLKSIZE - offset); + return chksum; +} + +bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) +{ + struct f2fs_inode *ri; + __u32 provided, calculated; + + if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN))) + return true; + +#ifdef CONFIG_F2FS_CHECK_FS + if (!f2fs_enable_inode_chksum(sbi, page)) +#else + if (!f2fs_enable_inode_chksum(sbi, page) || + PageDirty(page) || PageWriteback(page)) +#endif + return true; + + ri = &F2FS_NODE(page)->i; + provided = le32_to_cpu(ri->i_inode_checksum); + calculated = f2fs_inode_chksum(sbi, page); + + if (provided != calculated) + f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x", + page->index, ino_of_node(page), provided, calculated); + + return provided == calculated; +} + +void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) +{ + struct f2fs_inode *ri = &F2FS_NODE(page)->i; + + if (!f2fs_enable_inode_chksum(sbi, page)) + return; + + ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); +} + +static bool sanity_check_compress_inode(struct inode *inode, + struct f2fs_inode *ri) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + unsigned char clevel; + + if (ri->i_compress_algorithm >= COMPRESS_MAX) { + f2fs_warn(sbi, + "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix", + __func__, inode->i_ino, ri->i_compress_algorithm); + return false; + } + if (le64_to_cpu(ri->i_compr_blocks) > + SECTOR_TO_BLOCK(inode->i_blocks)) { + f2fs_warn(sbi, + "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", + __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks), + SECTOR_TO_BLOCK(inode->i_blocks)); + return false; + } + if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || + ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { + f2fs_warn(sbi, + "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix", + __func__, inode->i_ino, ri->i_log_cluster_size); + return false; + } + + clevel = le16_to_cpu(ri->i_compress_flag) >> + COMPRESS_LEVEL_OFFSET; + switch (ri->i_compress_algorithm) { + case COMPRESS_LZO: +#ifdef CONFIG_F2FS_FS_LZO + if (clevel) + goto err_level; +#endif + break; + case COMPRESS_LZORLE: +#ifdef CONFIG_F2FS_FS_LZORLE + if (clevel) + goto err_level; +#endif + break; + case COMPRESS_LZ4: +#ifdef CONFIG_F2FS_FS_LZ4 +#ifdef CONFIG_F2FS_FS_LZ4HC + if (clevel && + (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL)) + goto err_level; +#else + if (clevel) + goto err_level; +#endif +#endif + break; + case COMPRESS_ZSTD: +#ifdef CONFIG_F2FS_FS_ZSTD + if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel()) + goto err_level; +#endif + break; + default: + goto err_level; + } + + return true; +err_level: + f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix", + __func__, inode->i_ino, clevel); + return false; +} + +static bool sanity_check_inode(struct inode *inode, struct page *node_page) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + struct f2fs_inode *ri = F2FS_INODE(node_page); + unsigned long long iblocks; + + iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); + if (!iblocks) { + f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", + __func__, inode->i_ino, iblocks); + return false; + } + + if (ino_of_node(node_page) != nid_of_node(node_page)) { + f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", + __func__, inode->i_ino, + ino_of_node(node_page), nid_of_node(node_page)); + return false; + } + + if (f2fs_has_extra_attr(inode)) { + if (!f2fs_sb_has_extra_attr(sbi)) { + f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", + __func__, inode->i_ino); + return false; + } + if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || + fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || + fi->i_extra_isize % sizeof(__le32)) { + f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", + __func__, inode->i_ino, fi->i_extra_isize, + F2FS_TOTAL_EXTRA_ATTR_SIZE); + return false; + } + if (f2fs_sb_has_flexible_inline_xattr(sbi) && + f2fs_has_inline_xattr(inode) && + (!fi->i_inline_xattr_size || + fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { + f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", + __func__, inode->i_ino, fi->i_inline_xattr_size, + MAX_INLINE_XATTR_SIZE); + return false; + } + if (f2fs_sb_has_compression(sbi) && + fi->i_flags & F2FS_COMPR_FL && + F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, + i_compress_flag)) { + if (!sanity_check_compress_inode(inode, ri)) + return false; + } + } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) { + f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", + __func__, inode->i_ino); + return false; + } + + if (!f2fs_sb_has_extra_attr(sbi)) { + if (f2fs_sb_has_project_quota(sbi)) { + f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", + __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA); + return false; + } + if (f2fs_sb_has_inode_chksum(sbi)) { + f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", + __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM); + return false; + } + if (f2fs_sb_has_flexible_inline_xattr(sbi)) { + f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", + __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); + return false; + } + if (f2fs_sb_has_inode_crtime(sbi)) { + f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", + __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); + return false; + } + if (f2fs_sb_has_compression(sbi)) { + f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", + __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); + return false; + } + } + + if (f2fs_sanity_check_inline_data(inode)) { + f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", + __func__, inode->i_ino, inode->i_mode); + return false; + } + + if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { + f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", + __func__, inode->i_ino, inode->i_mode); + return false; + } + + if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { + f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", + __func__, inode->i_ino); + return false; + } + + return true; +} + +static void init_idisk_time(struct inode *inode) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + + fi->i_disk_time[0] = inode->i_atime; + fi->i_disk_time[1] = inode_get_ctime(inode); + fi->i_disk_time[2] = inode->i_mtime; +} + +static int do_read_inode(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + struct page *node_page; + struct f2fs_inode *ri; + projid_t i_projid; + int err; + + /* Check if ino is within scope */ + if (f2fs_check_nid_range(sbi, inode->i_ino)) + return -EINVAL; + + node_page = f2fs_get_node_page(sbi, inode->i_ino); + if (IS_ERR(node_page)) + return PTR_ERR(node_page); + + ri = F2FS_INODE(node_page); + + inode->i_mode = le16_to_cpu(ri->i_mode); + i_uid_write(inode, le32_to_cpu(ri->i_uid)); + i_gid_write(inode, le32_to_cpu(ri->i_gid)); + set_nlink(inode, le32_to_cpu(ri->i_links)); + inode->i_size = le64_to_cpu(ri->i_size); + inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); + + inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); + inode_set_ctime(inode, le64_to_cpu(ri->i_ctime), + le32_to_cpu(ri->i_ctime_nsec)); + inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); + inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); + inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); + inode->i_generation = le32_to_cpu(ri->i_generation); + if (S_ISDIR(inode->i_mode)) + fi->i_current_depth = le32_to_cpu(ri->i_current_depth); + else if (S_ISREG(inode->i_mode)) + fi->i_gc_failures[GC_FAILURE_PIN] = + le16_to_cpu(ri->i_gc_failures); + fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); + fi->i_flags = le32_to_cpu(ri->i_flags); + if (S_ISREG(inode->i_mode)) + fi->i_flags &= ~F2FS_PROJINHERIT_FL; + bitmap_zero(fi->flags, FI_MAX); + fi->i_advise = ri->i_advise; + fi->i_pino = le32_to_cpu(ri->i_pino); + fi->i_dir_level = ri->i_dir_level; + + get_inline_info(inode, ri); + + fi->i_extra_isize = f2fs_has_extra_attr(inode) ? + le16_to_cpu(ri->i_extra_isize) : 0; + + if (f2fs_sb_has_flexible_inline_xattr(sbi)) { + fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); + } else if (f2fs_has_inline_xattr(inode) || + f2fs_has_inline_dentry(inode)) { + fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; + } else { + + /* + * Previous inline data or directory always reserved 200 bytes + * in inode layout, even if inline_xattr is disabled. In order + * to keep inline_dentry's structure for backward compatibility, + * we get the space back only from inline_data. + */ + fi->i_inline_xattr_size = 0; + } + + if (!sanity_check_inode(inode, node_page)) { + f2fs_put_page(node_page, 1); + set_sbi_flag(sbi, SBI_NEED_FSCK); + f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); + return -EFSCORRUPTED; + } + + /* check data exist */ + if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) + __recover_inline_status(inode, node_page); + + /* try to recover cold bit for non-dir inode */ + if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) { + f2fs_wait_on_page_writeback(node_page, NODE, true, true); + set_cold_node(node_page, false); + set_page_dirty(node_page); + } + + /* get rdev by using inline_info */ + __get_inode_rdev(inode, ri); + + if (S_ISREG(inode->i_mode)) { + err = __written_first_block(sbi, ri); + if (err < 0) { + f2fs_put_page(node_page, 1); + return err; + } + if (!err) + set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); + } + + if (!f2fs_need_inode_block_update(sbi, inode->i_ino)) + fi->last_disk_size = inode->i_size; + + if (fi->i_flags & F2FS_PROJINHERIT_FL) + set_inode_flag(inode, FI_PROJ_INHERIT); + + if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) && + F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) + i_projid = (projid_t)le32_to_cpu(ri->i_projid); + else + i_projid = F2FS_DEF_PROJID; + fi->i_projid = make_kprojid(&init_user_ns, i_projid); + + if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) && + F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { + fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); + fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); + } + + if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) && + (fi->i_flags & F2FS_COMPR_FL)) { + if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, + i_compress_flag)) { + unsigned short compress_flag; + + atomic_set(&fi->i_compr_blocks, + le64_to_cpu(ri->i_compr_blocks)); + fi->i_compress_algorithm = ri->i_compress_algorithm; + fi->i_log_cluster_size = ri->i_log_cluster_size; + compress_flag = le16_to_cpu(ri->i_compress_flag); + fi->i_compress_level = compress_flag >> + COMPRESS_LEVEL_OFFSET; + fi->i_compress_flag = compress_flag & + GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0); + fi->i_cluster_size = BIT(fi->i_log_cluster_size); + set_inode_flag(inode, FI_COMPRESSED_FILE); + } + } + + init_idisk_time(inode); + + /* Need all the flag bits */ + f2fs_init_read_extent_tree(inode, node_page); + f2fs_init_age_extent_tree(inode); + + if (!sanity_check_extent_cache(inode)) { + f2fs_put_page(node_page, 1); + f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); + return -EFSCORRUPTED; + } + + f2fs_put_page(node_page, 1); + + stat_inc_inline_xattr(inode); + stat_inc_inline_inode(inode); + stat_inc_inline_dir(inode); + stat_inc_compr_inode(inode); + stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks)); + + return 0; +} + +static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino) +{ + return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) || + ino == F2FS_COMPRESS_INO(sbi); +} + +struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) +{ + struct f2fs_sb_info *sbi = F2FS_SB(sb); + struct inode *inode; + int ret = 0; + + inode = iget_locked(sb, ino); + if (!inode) + return ERR_PTR(-ENOMEM); + + if (!(inode->i_state & I_NEW)) { + if (is_meta_ino(sbi, ino)) { + f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino); + set_sbi_flag(sbi, SBI_NEED_FSCK); + ret = -EFSCORRUPTED; + trace_f2fs_iget_exit(inode, ret); + iput(inode); + f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); + return ERR_PTR(ret); + } + + trace_f2fs_iget(inode); + return inode; + } + + if (is_meta_ino(sbi, ino)) + goto make_now; + + ret = do_read_inode(inode); + if (ret) + goto bad_inode; +make_now: + if (ino == F2FS_NODE_INO(sbi)) { + inode->i_mapping->a_ops = &f2fs_node_aops; + mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); + } else if (ino == F2FS_META_INO(sbi)) { + inode->i_mapping->a_ops = &f2fs_meta_aops; + mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); + } else if (ino == F2FS_COMPRESS_INO(sbi)) { +#ifdef CONFIG_F2FS_FS_COMPRESSION + inode->i_mapping->a_ops = &f2fs_compress_aops; + /* + * generic_error_remove_page only truncates pages of regular + * inode + */ + inode->i_mode |= S_IFREG; +#endif + mapping_set_gfp_mask(inode->i_mapping, + GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE); + } else if (S_ISREG(inode->i_mode)) { + inode->i_op = &f2fs_file_inode_operations; + inode->i_fop = &f2fs_file_operations; + inode->i_mapping->a_ops = &f2fs_dblock_aops; + } else if (S_ISDIR(inode->i_mode)) { + inode->i_op = &f2fs_dir_inode_operations; + inode->i_fop = &f2fs_dir_operations; + inode->i_mapping->a_ops = &f2fs_dblock_aops; + mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); + } else if (S_ISLNK(inode->i_mode)) { + if (file_is_encrypt(inode)) + inode->i_op = &f2fs_encrypted_symlink_inode_operations; + else + inode->i_op = &f2fs_symlink_inode_operations; + inode_nohighmem(inode); + inode->i_mapping->a_ops = &f2fs_dblock_aops; + } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || + S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { + inode->i_op = &f2fs_special_inode_operations; + init_special_inode(inode, inode->i_mode, inode->i_rdev); + } else { + ret = -EIO; + goto bad_inode; + } + f2fs_set_inode_flags(inode); + + if (file_should_truncate(inode) && + !is_sbi_flag_set(sbi, SBI_POR_DOING)) { + ret = f2fs_truncate(inode); + if (ret) + goto bad_inode; + file_dont_truncate(inode); + } + + unlock_new_inode(inode); + trace_f2fs_iget(inode); + return inode; + +bad_inode: + f2fs_inode_synced(inode); + iget_failed(inode); + trace_f2fs_iget_exit(inode, ret); + return ERR_PTR(ret); +} + +struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) +{ + struct inode *inode; +retry: + inode = f2fs_iget(sb, ino); + if (IS_ERR(inode)) { + if (PTR_ERR(inode) == -ENOMEM) { + memalloc_retry_wait(GFP_NOFS); + goto retry; + } + } + return inode; +} + +void f2fs_update_inode(struct inode *inode, struct page *node_page) +{ + struct f2fs_inode *ri; + struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ]; + + f2fs_wait_on_page_writeback(node_page, NODE, true, true); + set_page_dirty(node_page); + + f2fs_inode_synced(inode); + + ri = F2FS_INODE(node_page); + + ri->i_mode = cpu_to_le16(inode->i_mode); + ri->i_advise = F2FS_I(inode)->i_advise; + ri->i_uid = cpu_to_le32(i_uid_read(inode)); + ri->i_gid = cpu_to_le32(i_gid_read(inode)); + ri->i_links = cpu_to_le32(inode->i_nlink); + ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); + + if (!f2fs_is_atomic_file(inode) || + is_inode_flag_set(inode, FI_ATOMIC_COMMITTED)) + ri->i_size = cpu_to_le64(i_size_read(inode)); + + if (et) { + read_lock(&et->lock); + set_raw_read_extent(&et->largest, &ri->i_ext); + read_unlock(&et->lock); + } else { + memset(&ri->i_ext, 0, sizeof(ri->i_ext)); + } + set_raw_inline(inode, ri); + + ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); + ri->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); + ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); + ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); + ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); + if (S_ISDIR(inode->i_mode)) + ri->i_current_depth = + cpu_to_le32(F2FS_I(inode)->i_current_depth); + else if (S_ISREG(inode->i_mode)) + ri->i_gc_failures = + cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]); + ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); + ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); + ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); + ri->i_generation = cpu_to_le32(inode->i_generation); + ri->i_dir_level = F2FS_I(inode)->i_dir_level; + + if (f2fs_has_extra_attr(inode)) { + ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); + + if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode))) + ri->i_inline_xattr_size = + cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); + + if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) && + F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, + i_projid)) { + projid_t i_projid; + + i_projid = from_kprojid(&init_user_ns, + F2FS_I(inode)->i_projid); + ri->i_projid = cpu_to_le32(i_projid); + } + + if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && + F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, + i_crtime)) { + ri->i_crtime = + cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); + ri->i_crtime_nsec = + cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); + } + + if (f2fs_sb_has_compression(F2FS_I_SB(inode)) && + F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, + i_compress_flag)) { + unsigned short compress_flag; + + ri->i_compr_blocks = + cpu_to_le64(atomic_read( + &F2FS_I(inode)->i_compr_blocks)); + ri->i_compress_algorithm = + F2FS_I(inode)->i_compress_algorithm; + compress_flag = F2FS_I(inode)->i_compress_flag | + F2FS_I(inode)->i_compress_level << + COMPRESS_LEVEL_OFFSET; + ri->i_compress_flag = cpu_to_le16(compress_flag); + ri->i_log_cluster_size = + F2FS_I(inode)->i_log_cluster_size; + } + } + + __set_inode_rdev(inode, ri); + + /* deleted inode */ + if (inode->i_nlink == 0) + clear_page_private_inline(node_page); + + init_idisk_time(inode); +#ifdef CONFIG_F2FS_CHECK_FS + f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page); +#endif +} + +void f2fs_update_inode_page(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct page *node_page; + int count = 0; +retry: + node_page = f2fs_get_node_page(sbi, inode->i_ino); + if (IS_ERR(node_page)) { + int err = PTR_ERR(node_page); + + /* The node block was truncated. */ + if (err == -ENOENT) + return; + + if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT) + goto retry; + f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE); + return; + } + f2fs_update_inode(inode, node_page); + f2fs_put_page(node_page, 1); +} + +int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + if (inode->i_ino == F2FS_NODE_INO(sbi) || + inode->i_ino == F2FS_META_INO(sbi)) + return 0; + + /* + * atime could be updated without dirtying f2fs inode in lazytime mode + */ + if (f2fs_is_time_consistent(inode) && + !is_inode_flag_set(inode, FI_DIRTY_INODE)) + return 0; + + if (!f2fs_is_checkpoint_ready(sbi)) + return -ENOSPC; + + /* + * We need to balance fs here to prevent from producing dirty node pages + * during the urgent cleaning time when running out of free sections. + */ + f2fs_update_inode_page(inode); + if (wbc && wbc->nr_to_write) + f2fs_balance_fs(sbi, true); + return 0; +} + +/* + * Called at the last iput() if i_nlink is zero + */ +void f2fs_evict_inode(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + nid_t xnid = fi->i_xattr_nid; + int err = 0; + + f2fs_abort_atomic_write(inode, true); + + if (fi->cow_inode) { + clear_inode_flag(fi->cow_inode, FI_COW_FILE); + iput(fi->cow_inode); + fi->cow_inode = NULL; + } + + trace_f2fs_evict_inode(inode); + truncate_inode_pages_final(&inode->i_data); + + if ((inode->i_nlink || is_bad_inode(inode)) && + test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode)) + f2fs_invalidate_compress_pages(sbi, inode->i_ino); + + if (inode->i_ino == F2FS_NODE_INO(sbi) || + inode->i_ino == F2FS_META_INO(sbi) || + inode->i_ino == F2FS_COMPRESS_INO(sbi)) + goto out_clear; + + f2fs_bug_on(sbi, get_dirty_pages(inode)); + f2fs_remove_dirty_inode(inode); + + f2fs_destroy_extent_tree(inode); + + if (inode->i_nlink || is_bad_inode(inode)) + goto no_delete; + + err = f2fs_dquot_initialize(inode); + if (err) { + err = 0; + set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); + } + + f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO); + f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); + f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); + + if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) + sb_start_intwrite(inode->i_sb); + set_inode_flag(inode, FI_NO_ALLOC); + i_size_write(inode, 0); +retry: + if (F2FS_HAS_BLOCKS(inode)) + err = f2fs_truncate(inode); + + if (time_to_inject(sbi, FAULT_EVICT_INODE)) + err = -EIO; + + if (!err) { + f2fs_lock_op(sbi); + err = f2fs_remove_inode_page(inode); + f2fs_unlock_op(sbi); + if (err == -ENOENT) { + err = 0; + + /* + * in fuzzed image, another node may has the same + * block address as inode's, if it was truncated + * previously, truncation of inode node will fail. + */ + if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { + f2fs_warn(F2FS_I_SB(inode), + "f2fs_evict_inode: inconsistent node id, ino:%lu", + inode->i_ino); + f2fs_inode_synced(inode); + set_sbi_flag(sbi, SBI_NEED_FSCK); + } + } + } + + /* give more chances, if ENOMEM case */ + if (err == -ENOMEM) { + err = 0; + goto retry; + } + + if (err) { + f2fs_update_inode_page(inode); + if (dquot_initialize_needed(inode)) + set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); + } + if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) + sb_end_intwrite(inode->i_sb); +no_delete: + dquot_drop(inode); + + stat_dec_inline_xattr(inode); + stat_dec_inline_dir(inode); + stat_dec_inline_inode(inode); + stat_dec_compr_inode(inode); + stat_sub_compr_blocks(inode, + atomic_read(&fi->i_compr_blocks)); + + if (likely(!f2fs_cp_error(sbi) && + !is_sbi_flag_set(sbi, SBI_CP_DISABLED))) + f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); + else + f2fs_inode_synced(inode); + + /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */ + if (inode->i_ino) + invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, + inode->i_ino); + if (xnid) + invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); + if (inode->i_nlink) { + if (is_inode_flag_set(inode, FI_APPEND_WRITE)) + f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO); + if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) + f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO); + } + if (is_inode_flag_set(inode, FI_FREE_NID)) { + f2fs_alloc_nid_failed(sbi, inode->i_ino); + clear_inode_flag(inode, FI_FREE_NID); + } else { + /* + * If xattr nid is corrupted, we can reach out error condition, + * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)). + * In that case, f2fs_check_nid_range() is enough to give a clue. + */ + } +out_clear: + fscrypt_put_encryption_info(inode); + fsverity_cleanup_inode(inode); + clear_inode(inode); +} + +/* caller should call f2fs_lock_op() */ +void f2fs_handle_failed_inode(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct node_info ni; + int err; + + /* + * clear nlink of inode in order to release resource of inode + * immediately. + */ + clear_nlink(inode); + + /* + * we must call this to avoid inode being remained as dirty, resulting + * in a panic when flushing dirty inodes in gdirty_list. + */ + f2fs_update_inode_page(inode); + f2fs_inode_synced(inode); + + /* don't make bad inode, since it becomes a regular file. */ + unlock_new_inode(inode); + + /* + * Note: we should add inode to orphan list before f2fs_unlock_op() + * so we can prevent losing this orphan when encoutering checkpoint + * and following suddenly power-off. + */ + err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); + if (err) { + set_sbi_flag(sbi, SBI_NEED_FSCK); + set_inode_flag(inode, FI_FREE_NID); + f2fs_warn(sbi, "May loss orphan inode, run fsck to fix."); + goto out; + } + + if (ni.blk_addr != NULL_ADDR) { + err = f2fs_acquire_orphan_inode(sbi); + if (err) { + set_sbi_flag(sbi, SBI_NEED_FSCK); + f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix."); + } else { + f2fs_add_orphan_inode(inode); + } + f2fs_alloc_nid_done(sbi, inode->i_ino); + } else { + set_inode_flag(inode, FI_FREE_NID); + } + +out: + f2fs_unlock_op(sbi); + + /* iput will drop the inode object */ + iput(inode); +} |