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Date:      Sun, 27 Jun 1999 20:43:28 -0400 (EDT)
From:      Alexander Viro <viro@math.psu.edu>
To:        der Mouse <mouse@Rodents.Montreal.QC.CA>
Cc:        Francois-Rene Rideau <fare@tunes.org>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, NetBSD Kernel <tech-kern@netbsd.org>, OpenBSD Kernel <tech@openbsd.org>, Linux Kernel <linux-kernel@vger.rutgers.edu>
Subject:   Re: Improving the Unix API
Message-ID:  <Pine.GSO.4.10.9906272034270.24019-100000@weyl.math.psu.edu>
In-Reply-To: <199906272333.TAA23042@Twig.Rodents.Montreal.QC.CA>

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On Sun, 27 Jun 1999, der Mouse wrote:

> >> (clri didn't work?)
> > Never heard about clri (was under Linux).
> 
> May not have existed, then, which *would* explain it. :-)

# debugfs -w /dev/sda1
debugfs:  clri file
debugfs:  close

It exists, all right ;-) Even documented - man 8 debugfs and there you go.

> The NetBSD manpage doesn't say what happens if you "mount -o
> update,force,rdonly" when there are writeable descriptors open onto the
> filesystem, and then try to use those fds.  I would assume further
> attempts to write would produce errors (EROFS?), unless of course the
> filesystem has been re-remounted read/write.

Forced revoke()? But then there is mmap() and IIRC revoke() on *BSD
doesn't unmap the stuff. Oh, shit, there is such thing as pending
unlink... Does vgone() force it?



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