linux-kernel - Re: [PATCH] xattr: Fix error results for non-existent / invisible attributes

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]

Date:	Mon, 20 Jun 2011 04:09:21 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Andreas Gruenbacher <agruen@...nel.org>
Cc:	Al Viro <viro@...iv.linux.org.uk>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] xattr: Fix error results for non-existent / invisible
 attributes

On Fri, May 27, 2011 at 02:50:36PM +0200, Andreas Gruenbacher wrote:
> Return -ENODATA when trying to read a user.* attribute which cannot
> exist: user space otherwise does not have a reasonable way to
> distinguish between non-existent and inaccessible attributes.
> 
> Likewise, return -ENODATA when an unprivileged process tries to read a
> trusted.* attribute: to unprivileged processes, those attributes are
> invisible (listxattr() won't include them).

This breaks xfstests 062.  It would also be very useful to send VFS
patches to linux-fsdevel, btw.

--
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/