linux-kernel - Re: Subject: [PATCH 12/16] Squashfs: header files

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

Message-Id: <1224606318.31157.80.camel@moss-terrapins.epoch.ncsc.mil>
Date:	Tue, 21 Oct 2008 12:25:18 -0400
From:	"David P. Quigley" <dpquigl@...ho.nsa.gov>
To:	Phillip Lougher <phillip@...gher.demon.co.uk>
Cc:	akpm@...ux-foundation.org, linux-embedded@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	tim.bird@...sony.com
Subject: Re: Subject: [PATCH 12/16] Squashfs: header files

On Fri, 2008-10-17 at 16:42 +0100, Phillip Lougher wrote:
[snip]

> +
> +struct squashfs_reg_inode {
> +	__le16			inode_type;
> +	__le16			mode;
> +	__le16			uid;
> +	__le16			guid;
> +	__le32			mtime;
> +	__le32	 		inode_number;
> +	__le32			start_block;
> +	__le32			fragment;
> +	__le32			offset;
> +	__le32			file_size;
> +	__le16			block_list[0];
> +};
> +
> +struct squashfs_lreg_inode {
> +	__le16			inode_type;
> +	__le16			mode;
> +	__le16			uid;
> +	__le16			guid;
> +	__le32			mtime;
> +	__le32	 		inode_number;
> +	__le64			start_block;
> +	__le64			file_size;
> +	__le64			sparse;
> +	__le32			nlink;
> +	__le32			fragment;
> +	__le32			offset;
> +	__le32			xattr;
> +	__le16			block_list[0];
> +};
> +
> +struct squashfs_dir_inode {
> +	__le16			inode_type;
> +	__le16			mode;
> +	__le16			uid;
> +	__le16			guid;
> +	__le32			mtime;
> +	__le32	 		inode_number;
> +	__le32			start_block;
> +	__le32			nlink;
> +	__le16			file_size;
> +	__le16			offset;
> +	__le32			parent_inode;
> +};
> +
> +struct squashfs_ldir_inode {
> +	__le16			inode_type;
> +	__le16			mode;
> +	__le16			uid;
> +	__le16			guid;
> +	__le32			mtime;
> +	__le32	 		inode_number;
> +	__le32			nlink;
> +	__le32			file_size;
> +	__le32			start_block;
> +	__le32			parent_inode;
> +	__le16			i_count;
> +	__le16			offset;
> +	struct squashfs_dir_index	index[0];
> +};
> +
[snip]

Something that seems weird is the inconsistency in the ordering of these
structs. The base part is the same across all inodes but for your
reg/lreg dir/ldir pairs you seem to shuffle the order of the added
parts. Is there a reason for this? Is their layout the same on disk
(baring the extra data in the l versions)? If so they probably should be
the same in the struct.

--
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/