linux-ext4 - Re: ioctl32 (was Re: filefrag abort)

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Message-id: <20090722170152.GN4231@webber.adilger.int>
Date:	Wed, 22 Jul 2009 11:01:52 -0600
From:	Andreas Dilger <adilger@....com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	Ron Johnson <ron.l.johnson@....net>, linux-ext4@...r.kernel.org
Subject: Re: ioctl32 (was Re: filefrag abort)

On Jul 21, 2009  19:57 -0500, Eric Sandeen wrote:
> Ron Johnson wrote:
> > On 2009-07-20 21:03, Theodore Tso wrote:
> >> On Mon, Jul 20, 2009 at 04:49:04PM -0500, Ron Johnson wrote:
> >>> Hi,
> >>>
> >>> (Is this OT?  http://sourceforge.net/forum/forum.php?forum_id=7052  
> >>> doesn't show much activity...)
> >>>
> >>> Debian Sid, e2fsprogs 1.41.8-1
> >>> Home-rolled 64-bit 2.6.30 with 32-bit userland
> >> Should be fixed in e2fsprogs 1.41.8-2
> > 
> > ff seems to work now, but I still get this in dmesg:
> > 
> > [188883.274547] ioctl32(filefrag:7086): Unknown cmd fd(3) 
> > cmd(c020660b){t:'f';sz:32} arg(ffacb808) on /some/large/file
> 
> Huh, did we miss a compat ioctl for fiemap.... looks like so.  I'll look
> into that tomorrow, thanks.

Sigh, I wish there was some sort of automatic ioctl parser tool that
would report if the ioctl will need compat handling or not.  I thought
the fiemap structs didn't need any compat handling because they are
properly sized/aligned and w/o pointers...

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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