linux-kernel - Re: ioctl32: Unknown cmd

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Message-Id: <20071016.152404.35664335.davem@davemloft.net>
Date:	Tue, 16 Oct 2007 15:24:04 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	arnd@...db.de
Cc:	Geert.Uytterhoeven@...ycom.com, jens.axboe@...cle.com,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: ioctl32: Unknown cmd

From: Arnd Bergmann <arnd@...db.de>
Date: Tue, 16 Oct 2007 21:50:35 +0200

> The one point where it is expected to have changed now is when you
> try to do these ioctls on something that is not a block device. Are
> you sure that the files you tried them on were created correctly?

Many many many programs do this exact sort of thing.

It is one of the bad aspects of moving the compat handling
down into the file ops for a specific device.
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