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#!/usr/bin/perl
#
# Copyright (c) 1995-1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# killall - kill processes by name
#
# $FreeBSD$
$ENV{'PATH'} = '/bin:/usr/bin'; # security
$procfs = '/proc';
$signal = 'SIGTERM'; # default signal for kill
$debug = 0;
$match = 0; # 0 match exactly program name
$show = 0; # do nothings
# see /sys/miscfs/procfs/procfs_status.c
$PROC_NAME = 0;
$PROC_EUID = 11;
$PROC_RUID = 12;
sub usage {
$! = 2;
die "killall [-?|-help] [-d] [-l] [-m] [-s] [-SIGNAL] procname ...\n";
}
$id = $<; # real uid of this process / your id
while ($_ = $ARGV[0], /^-/) {
shift @ARGV;
if (/^--$/) { $_ = $ARGV[0]; last }
elsif (/^-(h|help|\?)$/) { &usage }
elsif (/^-[dv]$/) { $debug++ }
elsif (/^-l$/) { exec 'kill', '-l' }
elsif (/^-m$/) { $match = 1 }
elsif (/^-s$/) { $show = 1 }
elsif (/^-([a-z][a-z0-9]+|[0-9]+)$/i) { $signal = $1 }
elsif (/^-/) { &usage }
}
&usage if $#ARGV < 0; # no arguments
die "Maybe $procfs is not mounted\n" unless -e "$procfs/0/status";
while ($program = $ARGV[0]) {
shift @ARGV;
$thiskill = 0;
opendir(PROCFS, "$procfs") || die "$procfs $!\n";
print " PID EUID RUID COMMAND\n" if $debug > 1;
# quote meta characters
($programMatch = $program) =~ s/(\W)/\\$1/g;
foreach (sort{$a <=> $b} grep(/^[0-9]/, readdir(PROCFS))) {
$status = "$procfs/$_/status";
$pid = $_;
next if $pid == $$; # don't kill yourself
open(STATUS, "$status") || next; # process maybe already terminated
while(<STATUS>) {
@proc = split;
printf "%5d %5d %5d %s\n", $pid, $proc[$PROC_EUID],
$proc[$PROC_RUID], $proc[$PROC_NAME] if $debug > 1;
if ( # match program name
($proc[$PROC_NAME] eq $program ||
($match && $proc[$PROC_NAME] =~ /$programMatch/oi)
) &&
# id test
($proc[$PROC_EUID] eq $id || # effective uid
$proc[$PROC_RUID] eq $id || # real uid
!$id)) # root
{
push(@kill, $pid);
$thiskill++;
}
}
close STATUS;
}
closedir PROCFS;
# nothing found
warn "No matching processes ``$program''\n" unless $thiskill;
}
# nothing found
exit(1) if $#kill < 0;
$signal =~ y/a-z/A-Z/; # signal name in upper case
$signal =~ s/^SIG//; # strip a leading SIG if present
print "kill -$signal @kill\n" if $debug || $show;
$cnt = kill ($signal, @kill) unless $show; # kill processes
exit(0) if $show || $cnt == $#kill + 1;
exit(1);
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