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#!/usr/local/cpanel/3rdparty/bin/perl
use strict;
use warnings;
use Time::HiRes ();
use constant DOVECOT_PROCESS_NAMES => qw(
dovecot
dovecot-auth
dovecot/pop3-login
dovecot/imap-login
dovecot/anvil
dovecot/log
dovecot/config
dovecot/auth
dovecot-wrap
);
my $MAX_WAIT = 30; #seconds
my $SLEEP_INTERVAL = 0.1;
my $pidfile = '/var/run/dovecot/master.pid';
#----------------------------------------------------------------------
if ( "@ARGV" =~ m<--help> ) {
print < ) {
print "Master Dovecot process = $master_pid\n";
}
else {
warn "Invalid contents in “$pidfile”: [$master_pid]\n";
undef $master_pid;
}
}
elsif ( $!{'ENOENT'} ) {
print "“$pidfile” doesn’t exist!\n";
}
else {
die "open($pidfile): $!";
}
my @CMD = qw( /usr/sbin/dovecot stop );
print "Executing “@CMD” …\n";
my $pid = fork();
die "Failed to fork child process for “@CMD”" if !defined $pid;
if ( $pid ) {
print "Waiting $MAX_WAIT seconds for process $pid to end …\n";
my $start = time();
my $killed;
while ( !waitpid( $pid, 1 ) ) {
if ( time > ( $start + $MAX_WAIT ) ) {
print "Process $pid has taken over $MAX_WAIT seconds to shut down.\n";
kill 'KILL', $pid;
waitpid($pid, 0);
$killed = 1;
last;
}
Time::HiRes::sleep($SLEEP_INTERVAL);
}
# If we killed the dovecot stop command we want to fallthrough to the rest of the shutdown
# but not if it terminated with a legitimate error.
exit 1 if $? && !$killed;
}
else {
exec(@CMD) or die "Failed to run “@CMD”: $!";
}
print "Done! Waiting $MAX_WAIT seconds for process $master_pid to end …\n";
if ( length $master_pid ) {
my $start = time();
my $end;
while ( !$end ) {
if ( kill 'ZERO', $master_pid ) {
if ( time > ( $start + $MAX_WAIT ) ) {
print "Process $master_pid has taken over $MAX_WAIT seconds to shut down.\n";
_safekill_any_remaining_dovecot_processes();
$end = 1;
}
Time::HiRes::sleep($SLEEP_INTERVAL);
}
else {
print "Dovecot is now shut down.\n";
# We may have some stragglers so we
# do a safekill just in case in order to handle:
#
# Case 187449: /etc/init.d/dovecot does not stop
# properly dovecot
#
# When stopping dovecot we are killing some processes
# but a few of them might survive when dovecot-wrap is
# stalled.
_safekill_any_remaining_dovecot_processes();
$end = 1;
}
}
}
sub _safekill_any_remaining_dovecot_processes {
print "Any remaining Dovecot processes will now be terminated.\n";
system( '/usr/local/cpanel/etc/init/safekill', DOVECOT_PROCESS_NAMES );
}
1;