linux-ext4 - [PATCH v2.2 00/51] e2fsprogs: Add metadata checksumming

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]

Message-ID: <20111214011316.20947.13706.stgit@elm3c44.beaverton.ibm.com>
Date:	Tue, 13 Dec 2011 17:13:17 -0800
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Theodore Tso <tytso@....edu>,
	"Darrick J. Wong" <djwong@...ibm.com>
Cc:	Sunil Mushran <sunil.mushran@...cle.com>,
	Amir Goldstein <amir73il@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Mingming Cao <cmm@...ibm.com>,
	Joel Becker <jlbec@...lplan.org>, linux-ext4@...r.kernel.org,
	Coly Li <colyli@...il.com>
Subject: [PATCH v2.2 00/51] e2fsprogs: Add metadata checksumming

Hi all,

This patchset adds support in e2fsprogs for attaching crc32c checksums to most
of the ext4 metadata objects.  A full design document is on the ext4 wiki[1].
Please see the cover letter for the kernel patches for a more thorough summary
of this work.

Please have a look at the design document and patches, and please feel free to
suggest any changes.

v2: Checksum the MMP block, store the checksum type in the superblock, include
the inode generation in file checksums, and finally solve the problem of limited
space in block groups by splitting the checksum into two halves.

v2.1: Checksum the reserved parts of the htree tail structure.

v2.2: Reincorporate the FS UUID in the bitmap checksum calcuations.  Move all
disk layout changes to the front and the feature flag enablement to the end of
the patch set.  Fail journal recovery if revoke block fails checksum.

This patchset has been tested on 3.2.0-rc5 on x64, i386, ppc64, and ppc32.  The
patches seems to work fine on all four platforms.  The patchset is based atop
the 1.42 release.

--D

[1] https://ext4.wiki.kernel.org/index.php/Ext4_Metadata_Checksums

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html