linux-kernel - Re: [PATCH 9/15] sanitize audit_fd

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Date:	Wed, 17 Dec 2008 12:18:32 -0500
From:	Eric Paris <eparis@...hat.com>
To:	Al Viro <viro@....linux.org.uk>
Cc:	linux-audit@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 9/15] sanitize audit_fd_pair()

On Wed, 2008-12-17 at 05:12 +0000, Al Viro wrote:
> * no allocations
> * return void
> 
> Signed-off-by: Al Viro <viro@...iv.linux.org.uk>

> diff --git a/kernel/auditsc.c b/kernel/auditsc.c
> index ac89cd3..5de0087 100644
> --- a/kernel/auditsc.c
> +++ b/kernel/auditsc.c
> @@ -215,6 +210,7 @@ struct audit_context {
>  			struct mq_attr		attr;
>  		} mq_open;
>  	};
> +	int fds[2];
>  
>  #if AUDIT_DEBUG
>  	int		    put_count;

Waste of space, at least on a 32 bit machine where the size of the ipc
aux data is definitely larger than the sockcall aux data.  But I guess
what you did is a whole lot easier and clearer than to try to hack up
adding it to both sockcall and new pipe_fds and using the right one at
the right time.  I guess if we cared about 64 bits per audited thread we
wouldn't be moving the aux data into the audit_context anyway.

Acked-by: Eric Paris <eparis@...hat.com>

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