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Chao Yu 061536fa27 fsck.f2fs: do xnid sanity check only during fsck 
commit c954e7cc4b
category: bugfix
issue: #I6VAS0
CVE: NA

Signed-off-by: DongSenhao <dongsenhao2@huawei.com>
---------------------------------------

As Eric reported:

Commit 7a22451bc2 ("fsck.f2fs: fix to check validation of i_xattr_nid")

This commit caused a regression where 'dump.f2fs -i <inode> <device>'
now segfaults if the inode has any extended attributes.

It's because read_all_xattrs() now calls fsck_sanity_check_nid(), which
eventually dereferences f2fs_fsck::main_area_bitmap, which is NULL.

I'm not sure what was intended here.

Here's the output from gdb:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7f750fa in f2fs_test_bit (nr=1024, p=0x0) at libf2fs.c:304
304             return (mask & *addr) != 0;
(gdb) bt
    ntype=TYPE_XATTR, ni=0x7fffffffdd20) at fsck.c:449
    ntype=TYPE_XATTR, ni=0x7fffffffdd20) at fsck.c:495

fsck_sanity_check_nid() should only called from fsck.f2fs context, rather
than dump.f2fs, otherwise it may cause dereferencing structure fields of
fsck incorrectly.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: dongsenhao <dongsenhao2@huawei.com>
2023-04-13 14:13:44 +08:00
fsck fsck.f2fs: do xnid sanity check only during fsck 2023-04-13 14:13:44 +08:00
include f2fs_io: change fibmap to fiemap 2023-04-13 14:13:43 +08:00
lib f2fs_tools部件化 2022-08-23 10:40:59 +08:00
m4 mkfs: Initial commit for patch v2 series 2012-11-26 19:45:59 +09:00
man mkfs.f2fs.8: document the verity feature 2023-04-13 14:13:43 +08:00
mkfs mkfs.f2fs: add -h and --help 2023-04-13 14:13:43 +08:00
scripts script: add simple test script 2016-04-18 21:11:26 -04:00
tools f2fs_io: add erase option 2023-04-13 14:13:44 +08:00
.gitignore f2fs-tools: Add f2fs_io to .gitignore 2019-03-23 19:00:10 +09:00
AUTHORS mkfs: Initial commit for patch v2 series 2012-11-26 19:45:59 +09:00
autogen.sh defrag.f2fs: introduce defragmentation tool 2015-12-11 15:58:50 -08:00
BUILD.gn f2fs_tools部件化 2022-08-23 10:40:59 +08:00
bundle.json f2fs_tools部件化 2022-08-23 10:40:59 +08:00
ChangeLog f2fs-tools: add fsck.f2fs and dump.f2fs 2013-07-04 23:15:25 +09:00
config.h BUILD.gn and config.h modify Huawei license to GPL-2.0 license.Add #ifndef CONFIG_H #define CONFIG_H on the head of file and #endif on the end of config.h. Modify the value of Name in README.OpenSource. 2021-12-20 21:44:20 +08:00
configure.ac f2fs_io: change fibmap to fiemap 2023-04-13 14:13:43 +08:00
COPYING License tweak: LGPL v2.1 vs LGPL v2 2014-06-12 16:52:59 +09:00
Makefile.am f2fs-tools: add f2fstat to print f2fs's status in sec 2014-01-14 17:48:35 +09:00
OAT.xml 单个模块扫描(三方软件)结果清零. 2022-02-16 16:22:31 +08:00
README.md Rename file README to README.md 2022-05-11 19:10:55 +08:00
README.OpenSource README.OpenSource format modification 2022-05-26 18:31:53 +08:00
VERSION f2fs-tools: release 1.14.0 2020-08-24 14:55:54 -07:00
VERSIONING doc: add versioning rule 2018-11-21 11:38:23 -08:00

README.md

F2FS format utilility

To use f2fs filesystem, you should format the storage partition with this utilility. Otherwise, you cannot mount f2fs.

Before compilation

You should install the following packages.

  • libuuid-devel or uuid-dev
  • pkg-config
  • autoconf
  • libtool
  • libselinux1-dev

Initial compilation

Before compilation initially, autoconf/automake tools should be run.

./autogen.sh

How to compile

./configure
make
make install

How to cross-compile (e.g., for ARM)

  1. Add the below line into mkfs/Makefile.am:
    mkfs_f2fs_LDFLAGS = -all-static

  2. Add the below line into fsck/Makefile.am:
    fsck_f2fs_LDFLAGS = -all-static

  3. then, do:
    LDFLAGS=--static ./configure
    --host=arm-none-linux-gnueabi --target=arm-none-linux-gnueabi
    make

How to run by default

mkfs.f2fs -l [LABEL] $DEV

For more mkfs options, see man page.