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_msg(sbi->sb, KERN_WARNING, "checksum invalid, ino = %x, %x vs. %x", 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 void init_inode_block(struct f2fs_sb_info *sbi, struct f2fs_node *node_blk, struct dentry *de) { struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); mode_t mode = de->mode; int links = 1; unsigned int size; int blocks = 1; if (de->file_type == F2FS_FT_DIR) { mode |= S_IFDIR; size = 4096; links++; blocks++; } else if (de->file_type == F2FS_FT_REG_FILE) { mode |= S_IFREG; size = 0; } else if (de->file_type == F2FS_FT_SYMLINK) { ASSERT(de->link); mode |= S_IFLNK; size = strlen(de->link); if (size + 1 > MAX_INLINE_DATA(node_blk)) blocks++; } else { ASSERT(0); } node_blk->i.i_mode = cpu_to_le16(mode); node_blk->i.i_advise = 0; node_blk->i.i_uid = cpu_to_le32(de->uid); node_blk->i.i_gid = cpu_to_le32(de->gid); node_blk->i.i_links = cpu_to_le32(links); node_blk->i.i_size = cpu_to_le32(size); node_blk->i.i_blocks = cpu_to_le32(blocks); node_blk->i.i_atime = cpu_to_le64(de->mtime); node_blk->i.i_ctime = cpu_to_le64(de->mtime); node_blk->i.i_mtime = cpu_to_le64(de->mtime); node_blk->i.i_atime_nsec = 0; node_blk->i.i_ctime_nsec = 0; node_blk->i.i_mtime_nsec = 0; node_blk->i.i_generation = 0; node_blk->i.i_current_depth = cpu_to_le32(1); node_blk->i.i_xattr_nid = 0; node_blk->i.i_flags = 0; node_blk->i.i_inline = F2FS_INLINE_XATTR; node_blk->i.i_pino = cpu_to_le32(de->pino); node_blk->i.i_namelen = cpu_to_le32(de->len); memcpy(node_blk->i.i_name, de->name, de->len); node_blk->i.i_name[de->len] = 0; if (c.feature & cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR)) { node_blk->i.i_inline |= F2FS_EXTRA_ATTR; node_blk->i.i_extra_isize = cpu_to_le16(F2FS_TOTAL_EXTRA_ATTR_SIZE); } node_blk->footer.ino = cpu_to_le32(de->ino); node_blk->footer.nid = cpu_to_le32(de->ino); node_blk->footer.flag = 0; node_blk->footer.cp_ver = ckpt->checkpoint_ver; if (S_ISDIR(mode)) make_empty_dir(sbi, node_blk); else if (S_ISLNK(mode)) page_symlink(sbi, node_blk, de->link, size); if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM)) node_blk->i.i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(node_blk)); }