Date: Wed, 22 Dec 2004 11:42:46 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Jilles Tjoelker <jilles@stack.nl> Cc: Kris Kennaway <kris@obsecurity.org> Subject: Re: Forcefully unmounting devfs... Message-ID: <20041222194246.GC49344@xor.obsecurity.org> In-Reply-To: <20041222135734.GA57242@stack.nl> References: <84301.1103663813@critter.freebsd.dk> <41C89672.3000808@freebsd.org> <20041221232354.GA28374@xor.obsecurity.org> <20041222135734.GA57242@stack.nl>
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On Wed, Dec 22, 2004 at 02:57:34PM +0100, Jilles Tjoelker wrote:
> On Tue, Dec 21, 2004 at 03:23:54PM -0800, Kris Kennaway wrote:
> > Unfortunately that's going to cause me a fair amount of pain, unless
> > there's a simple way to kill all processes running in a given chroot
>=20
> Not that hard, although it is a bit tricky because command names may
> contain spaces, so something obvious like this does not work in the
> general case:
>=20
> fstat /chroot |awk '$4 =3D=3D "root" { print $3 }'
>=20
> But the following seems more reliable, assuming the mount points do not
> contain spaces:
>=20
> #!/bin/sh
>=20
> # USER CMD PID FD MOUNT INUM MODE SZ|DV R/W N=
AME
> # jilles zsh 57711 root / 2 drwxr-xr-x 1024 r /
>=20
> D=3D"$1"
> fstat "$D" | sed -Ene 's#^.* +([[:digit:]]+) +root +/[^ ]* +[[:digit:]]+ =
+.......... +[[:digit:]]+ +(r|rw|w) +'"$D"'$#\1#p'
>=20
> This would need some |xargs kill or similar.
Thanks, I hadn't thought of using fstat. I'll give this a try!
Kris
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