linux-ext4 - Re: File permissions in ext4

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] [day] [month] [year] [list]

Message-ID: <51FA9A9C.1090301@redhat.com>
Date:	Thu, 01 Aug 2013 12:27:56 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	Felipe Monteiro de Carvalho <felipemonteiro.carvalho@...il.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: File permissions in ext4

On 8/1/13 7:34 AM, Felipe Monteiro de Carvalho wrote:
> Hello,
> 
> Ok, I found that the permissions that I was looking for are stored in
> ext4_inode.i_mode ... but still there is the question: What is ACL
> used for then, and when is it different than zero?
> 
> thanks =)
> 

It is the block number containing an extended attribute for that inode,
if any; that extended attribute may be a file ACL.

It's a bit odd to call the xattr block "ACL" but it is what it is.  ;)

-Eric
--
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