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#!/usr/bin/perl
# Copyright (C) 2000-2002, 2004 MySQL AB
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# This is a utility for MySQL. It is not needed by any standard part
# of MySQL.
# Usage: mysql_zap [-signal] [-f] [-t] pattern
# Configuration parameters.
$sig = ""; # Default to try all signals
$ans = "y";
$opt_f= 0;
$opt_t= 0;
$opt_a = "";
$BSD = -f '/vmunix' || $ENV{"OS"} eq "SunOS4";
$LINUX = $^O eq 'linux' || $^O eq 'darwin';
$pscmd = $BSD ? "/bin/ps -auxww" : $LINUX ? "/bin/ps axuw" : "/bin/ps -ef";
open(TTYIN, "</dev/tty") || die "can't read /dev/tty: $!";
open(TTYOUT, ">/dev/tty") || die "can't write /dev/tty: $!";
select(TTYOUT);
$| = 1;
select(STDOUT);
$SIG{'INT'} = 'cleanup';
while ($#ARGV >= $[ && $ARGV[0] =~ /^-/) {
if ($ARGV[0] =~ /(ZERO|HUP|INT|QUIT|ILL|TRAP|ABRT|EMT|FPE|KILL|BUS|SEGV|SYS|PIPE|ALRM|TERM|URG|STOP|TSTP|CONT|CLD|TTIN|TTOU|IO|XCPU|XFSZ|VTALRM|PROF|WINCH|LOST|USR1|USR2)/ || $ARGV[0] =~ /-(\d+)$/) {
$sig = $1;
} elsif ($ARGV[0] eq "-f") {
$opt_f=1;
} elsif ($ARGV[0] eq "-t") {
$opt_t=1;
$ans = "n";
}
elsif ($ARGV[0] eq "-a")
{
$opt_a = 1;
}
elsif ($ARGV[0] eq "-?" || $ARGV[0] eq "-I" || $ARGV[0] eq "--help")
{
&usage;
}
else {
print STDERR "$0: illegal argument $ARGV[0] ignored\n";
}
shift;
}
&usage if $#ARGV < 0;
if (!$opt_f)
{
if ($BSD) {
system "stty cbreak </dev/tty >/dev/tty 2>&1";
}
else {
system "stty", 'cbreak',
system "stty", 'eol', '^A';
}
}
open(PS, "$pscmd|") || die "can't run $pscmd: $!";
$title = <PS>;
print TTYOUT $title;
# Catch any errors with eval. A bad pattern, for instance.
eval <<'EOF';
process: while ($cand = <PS>)
{
chop($cand);
($user, $pid) = split(' ', $cand);
next if $pid == $$;
$found = !@ARGV;
if ($opt_a) { $found = 1; }
foreach $pat (@ARGV)
{
if ($opt_a)
{
if (! ($cand =~ $pat))
{
next process;
}
}
else
{
$found = 1 if $cand =~ $pat;
}
}
next if (!$found);
if (! $opt_f && ! $opt_t)
{
print TTYOUT "$cand? ";
read(TTYIN, $ans, 1);
print TTYOUT "\n" if ($ans ne "\n");
}
else
{
print TTYOUT "$cand\n";
}
if ($ans =~ /^y/i) { &killpid($sig, $pid); }
if ($ans =~ /^q/i) { last; }
}
EOF
&cleanup;
sub usage {
print <<EOF;
Usage: $0 [-signal] [-?Ift] [--help] pattern
Options: -I or -? "info" -f "force" -t "test".
Version 1.0
Kill processes that match the pattern.
If -f isn't given, ask user for confirmation for each process to kill.
If signal isn't given, try first with signal 15, then with signal 9.
If -t is given, the processes are only shown on stdout.
EOF
exit(1);
}
sub cleanup {
if ($BSD) {
system "stty -cbreak </dev/tty >/dev/tty 2>&1";
}
else {
system "stty", 'icanon';
system "stty", 'eol', '^@';
}
print "\n";
exit;
}
sub killpid {
local($signal,$pid) = @_;
if ($signal)
{
kill $signal,$pid;
}
else
{
print "kill -15\n";
kill 15, $pid;
for (1..5) {
sleep 2;
return if kill(0, $pid) == 0;
}
print "kill -9\n";
kill 9, $pid;
for (1..5) {
sleep 2;
return if kill(0, $pid) == 0;
}
print "$pid will not die!\n";
}
}
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