inject.f2fs8

Usage

Overview

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.