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Date: Wed, 22 Dec 2004 14:57:34 +0100
From: Jilles Tjoelker <jilles@stack.nl>
To: Kris Kennaway <kris@obsecurity.org>
Message-ID: <20041222135734.GA57242@stack.nl>
References: <84301.1103663813@critter.freebsd.dk>
	<41C89672.3000808@freebsd.org> <20041221232354.GA28374@xor.obsecurity.org>
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cc: arch@freebsd.org
Subject: Re: Forcefully unmounting devfs...
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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

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:

fstat /chroot |awk '$4 == "root" { print $3 }'

But the following seems more reliable, assuming the mount points do not
contain spaces:

#!/bin/sh

# USER     CMD          PID   FD MOUNT      INUM MODE         SZ|DV R/W NAME
# jilles   zsh        57711 root /             2 drwxr-xr-x    1024  r  /

D="$1"
fstat "$D" | sed -Ene 's#^.* +([[:digit:]]+) +root +/[^ ]* +[[:digit:]]+ +.......... +[[:digit:]]+ +(r|rw|w) +'"$D"'$#\1#p'

This would need some |xargs kill or similar.

-- 
Jilles Tjoelker