INJECT.F2FS(8) System Manager's Manual INJECT.F2FS(8) NAME inject.f2fs - inject a Linux F2FS file system SYNOPSIS inject.f2fs [ options ] device DESCRIPTION inject.f2fs is used to modify metadata or data (directory entry) of f2fs file system image offline flexibly. OPTIONS -d debug level [default:0] Specify the level of debugging options. -V Print the version number and exit. --mb member name Specify the member name in a struct that is injected. --val new value New value to set if mb is a number. --str new string New string to set if mb is a string. --idx slot index Specify which slot is injected if mb is an array. --nid nid Specify which nid is injected. --blk blkaddr Specify which blkaddr is injected. --sb 0 or 1 or 2 Inject super block, its argument means which sb pack is injected, where 0 choses the current valid sb automatically. The available mb of sb are: magic magic number. s_stop_reason s_stop_reason array. s_errors s_errors array. feature features. devs.path path in devs array. --cp 0 or 1 or 2 Inject checkpoint, its argument means which cp pack is injected, where 0 choses the current valid cp automatically. The available mb of cp are: checkpoint_ver checkpoint version. ckpt_flags checkpoint flags. cur_node_segno cur_node_segno array. cur_node_blkoff cur_node_blkoff array. cur_data_segno cur_data_segno array. cur_data_blkoff cur_data_blkoff array. next_blkaddr fsync dnodes. alloc_type alloc_type array. crc crc checksum. elapsed_time elapsed mount time. --nat 0 or 1 or 2 Inject nat entry specified by nid, its argument means which nat pack is injected, where 0 choses the current valid nat automatically. The available mb of nat are: version nat entry version. ino nat entry ino. block_addr nat entry block_addr. --sit 0 or 1 or 2 Inject sit entry specified by blk, its argument means which sit pack is injected, where 0 choses the current valid sit automatically. The available mb of sit are: vblocks sit entry vblocks. valid_map sit entry valid_map. mtime sit entry mtime. --ssa Inject summary block or summary entry specified by blk. The available mb of ssa are: entry_type summary block footer entry_type. check_sum summary block footer check_sum. nid summary entry nid. version summary entry version. ofs_in_node summary entry ofs_in_node. --node Inject node block specified by nid. The available mb of node are: nid node footer nid. ino node footer ino. flag node footer flag. cp_ver node footer cp_ver. next_blkaddr node footer next_blkaddr. i_mode inode i_mode. i_advise inode i_advise. i_inline inode i_inline. i_links inode i_links. i_size inode i_size. i_blocks inode i_blocks. i_xattr_nid inode i_xattr_nid. i_ext.fofs inode i_ext.fofs. i_ext.blk_addr inode i_ext.blk_addr. i_ext.len inode i_ext.len. i_extra_isize inode i_extra_isize. i_inline_xattr_size inode i_inline_xattr_size. i_inode_checksum inode i_inode_checksum. i_compr_blocks inode i_compr_blocks. i_addr inode i_addr array specified by idx. i_nid inode i_nid array specified by idx. addr {in}direct node nid/addr array specified by idx. --dent Inject dentry block or dir entry specified by nid. --dots 1 or 2 The option means the "." or ".." directory entry of nid is going to be injected. The available mb of dent are: d_bitmap dentry block d_bitmap. d_hash dentry hash. d_ino dentry ino. d_ftype dentry ftype. filename dentry filename, and corresponding d_hash and namelen are updated implicitly. --dry-run Do not really inject. AUTHOR This version of inject.f2fs has been written by Sheng Yong . AVAILABILITY inject.f2fs is available from git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git. SEE ALSO mkfs.f2fs(8), fsck.f2fs(8), dump.f2fs(8), defrag.f2fs(8), resize.f2fs(8), sload.f2fs(8), defrag.f2fs(8). INJECT.F2FS(8)