linux-kernel - [PATCH 0/2] Squashfs: add LZ4 compression

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 22 Jul 2013 03:21:01 +0100
From:	Phillip Lougher <phillip@...ashfs.org.uk>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-embedded@...r.kernel.org
Cc:	Phillip Lougher <phillip@...ashfs.org.uk>
Subject: [PATCH 0/2] Squashfs: add LZ4 compression

Hi

Now that LZ4 compression support is in 3.11-rc1, I have written the
following two patches for Squashfs to use it.

Phillip Lougher (2):
  Squashfs: add LZ4 compression support
  Squashfs: Add LZ4 compression configuration option

 Documentation/filesystems/squashfs.txt |    8 +-
 fs/squashfs/Kconfig                    |   15 +++
 fs/squashfs/Makefile                   |    1 +
 fs/squashfs/decompressor.c             |    7 ++
 fs/squashfs/decompressor.h             |    4 +
 fs/squashfs/lz4_wrapper.c              |  163 ++++++++++++++++++++++++++++++++
 fs/squashfs/squashfs_fs.h              |    1 +
 7 files changed, 195 insertions(+), 4 deletions(-)
 create mode 100644 fs/squashfs/lz4_wrapper.c

These patches are also available in the git tree here:

browse: https://git.kernel.org/cgit/linux/kernel/git/pkl/squashfs-lz4.git
git clone: git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-lz4.git

LZ4 support has (obviously) also been added to the squashfs-tools
(Mksquashfs and Unsquashfs).  This is available from the Squashfs-tools
git repository here:

browse: https://git.kernel.org/cgit/fs/squashfs/squashfs-tools.git
git clone: git://git.kernel.org/pub/scm/fs/squashfs/squashfs-tools.git

When building the squashfs-tools edit the Makefile to enable LZ4
support (by default it is disabled).

LZ4 compression can be specified by using the -comp option, e.g.
% mksquashfs xxx img.sqsh -comp lz4

The use of LZ4 high compression can be specified using -Xhc, e.g.

% mksquashfs xxx img.sqsh -comp lz4 -Xhc

Phillip
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/