Re: fcntl(2) and other file systems like XFS

From: Jamie Lokier (
Date: Tue Mar 21 2000 - 10:36:10 EST

Eric W. Biederman wrote:
> > And you will notice there are plenty of collisions already, including
> > quite plausible ones with the ext2 ioctls..
> Just my 2 cents.
> It was mentioned earlier one of the disadvantages of ioctl was that for
> special files, that have their own ioctls we can't have use bot sets.
> I just too a quick look, and it looks like ioctl can accomplish both
> just with a little care. In particular you install some kind of
> wrapper for the inode operations after calling init_special_inode...

I din't think that's a good idea.

What happens when you have /dev on an XFS filesystem, you open a device
and call a device-specific ioctl()... but it collides with an XFS ioctl

Something will go wrong, won't it?

-- Jamie

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