#!/usr/local/bin/perl -w
#
#  Copyright (c) 2004, SWITCH - Teleinformatikdienste fuer Lehre und Forschung
#  All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions and the following disclaimer.
#   * 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.
#   * Neither the name of SWITCH nor the names of its contributors may be
#     used to endorse or promote products derived from this software without
#     specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
#
#  $Author: peter $
#
#  $Id: pid_check.pl 34 2005-07-18 12:53:55Z peter $
#
#  $LastChangedRevision: 34 $

use strict;
use warnings;

######################################
#
# Configuration: 
# The only parameter to set:

use lib "/usr/local/libexec/nfsen/";

#
######################################

use NfConf;

my $VERSION = '$Id: pid_check.pl 34 2005-07-18 12:53:55Z peter $';
my $nfsen_version = "1.2-d";

if ( !NfConf::LoadConfig() ) {
	die "ERR $Log::ERROR\n";
}

#
# Check if a process is running for every pid file 
#
my $pid_files = "$NfConf::VARDIR/run/*pid";
my @AllFiles = glob($pid_files);
foreach my $pid_file ( @AllFiles ) {
	open PID, $pid_file || warn "Can't open pid file: $!\n" , next;
	my $pid = <PID>;
	chomp($pid);
	close PID;

	if ( kill(0,$pid) != 1 ) {
		print STDERR "PID File: '$pid_file': Process does not exists\n";
		unlink $pid_file;
	}
}
