linux-kernel - Re: is avoiding compat ioctls possible?

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Message-Id: <20091029.013913.258759148.davem@davemloft.net>
Date:	Thu, 29 Oct 2009 01:39:13 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	heiko.carstens@...ibm.com
Cc:	arndbergmann@...glemail.com, airlied@...ux.ie,
	dri-devel@...ts.sourceforge.net, andi@...stfloor.org,
	linux-kernel@...r.kernel.org, schwidefsky@...ibm.com,
	me@...itjain.org, hch@....de, viro@...iv.linux.org.uk
Subject: Re: is avoiding compat ioctls possible?

From: Heiko Carstens <heiko.carstens@...ibm.com>
Date: Thu, 29 Oct 2009 09:34:16 +0100

> Subject: [PATCH] fs: add missing compat_ptr handling for FS_IOC_RESVSP ioctl
> 
> From: Heiko Carstens <heiko.carstens@...ibm.com>
> 
> For FS_IOC_RESVSP and FS_IOC_RESVSP64 compat_sys_ioctl() uses its
> arg argument as a pointer to userspace. However it is missing a
> a call to compat_ptr() which will do a proper pointer conversion.
> 
> This was introduced with 3e63cbb1 "fs: Add new pre-allocation ioctls
> to vfs for compatibility with legacy xfs ioctls".
> 
> Cc: Ankit Jain <me@...itjain.org>
> Cc: Christoph Hellwig <hch@....de>
> Cc: Al Viro <viro@...iv.linux.org.uk>
> Cc: Arnd Bergmann <arndbergmann@...glemail.com>
> Reported-by: David Miller <davem@...emloft.net>
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>

Acked-by: David S. Miller <davem@...emloft.net>
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