David S. Miller wrote:
> From: Jim Mostek <mostek@sgi.com>
> Date: Wed, 15 Mar 2000 13:12:32 -0600 (CST)
>
> OK. I guess we will use the ioctl interface. Seems ugly, but it
> works. We will need to deal with the issue of apps invoking ioctls
> (thinking they are using a device) and potentially hitting these
> file operations.
>
> Unless they try to pass an EXT2/XFS/etc. ioctl cmd they will
> get ENOTTY, I don't think there is any issue.
It's unlikely but possible. Think what happens when someone types
`framegrab < /tmp/video0' instead of `framegrab < /dev/video0'.
It does ext2 ioctls on a file in /tmp.
Ioctl numbers between different drivers aren't unique, unfortunately.
-- Jamie
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