Re: ioctl conflicts

David S. Miller (davem@redhat.com)
Thu, 30 Aug 2001 02:31:03 -0700 (PDT)


From: Gerd Knorr <kraxel@bytesex.org>
Date: 30 Aug 2001 08:16:22 GMT

Manik Raina wrote:
> ./include/linux/videodev.h:#define VIDIOCGCAP
> _IOR('v',1,struct video_capability)
> ./include/linux/ext2_fs.h:#define EXT2_IOC_GETVERSION _IOR('v',1,
> long)

The size of the argument has a different size, so they end up with
different magic numbers because of that.

What if "struct video_capability" were "int[2]"? Then the values
would be identical.

Later,
David S. Miller
davem@redhat.com
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