xcat-core/xCAT-rmc/scripts/perl/mtime

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#!/usr/bin/env perl
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
require 'open3.pl';
#This script is a modified version of mtime to be used as part of a sensor in the
#software managemnent system. This PERL script goes and finds the latest changed file via mtime
# It recurses the directory structure starting with the directory passed in via the command line
# (directory routine) and checks each file.
#
# Result is put to stdout
$mtime = 0;
$startdir = @ARGV[0];
chomp($startdir);
if (-d $startdir) { #directory
&directory("/", *mtime);
}
elsif (-f $startdir) { #file
my ($dv, $in, $m, $nl, $u, $g, $rd, $siz, $at, $mtime1) = stat($startdir);
$mtime = $mtime1;
}
else { exit 1; } #not a recognized format
print $mtime;
exit 0;
#
# directory
#
# Goes through directory tree to find files we need to pay attention too.
# Each file is checked for mtime.
#
sub directory
{
local ($dir, *mtime, $nlink) = @_;
local ($dev, $ino, $mode, $subcount, $dirtry, $namedirtry, $name1, $name,
$dir1, $mtime1, $dv, $in, $m, $nl, $u, $g, $rd, $siz, $at);
($dev, $ino, $nlink) = stat($dir) unless $nlink;
$dirtry = $startdir;
$dirtry .= $dir;
$dir1 = substr($dir, 1);
opendir(DIR, $dirtry);
local (@filenames) = readdir(DIR);
if ($nlink == 2) {
for (@filenames) {
next if $_ eq '.';
next if $_ eq '..';
#
# Check to see if the mtime of this file is later than the current mtime
#
$name = "$dir/$_";
$name1 = "$dir1/$_";
$name2 = "/$startdir/$name1";
($dv, $in, $m, $nl, $u, $g, $rd, $siz, $at, $mtime1) = stat($name2);
if ($mtime1 > $mtime) {
$mtime = $mtime1;
}
}
}
else {
$subcount = $nlink - 2;
for (@filenames) {
next if $_ eq '.';
next if $_ eq '..';
#
# Check to see if the mtime of this file is later than the current mtime
#
$name = "$dir/$_";
$name1 = "$dir1/$_";
$name2 = "/$startdir/$name1";
($dev, $ino, $m, $nl, $u, $g, $rd, $siz, $at, $mtime1) = stat($name2);
if ($mtime1 > $mtime && !(-d $name2)) {
$mtime = $mtime1;
}
next if $subcount == 0;
#
# Recurse into next lower subdirectory
#
$namedirtry = "/$startdir/";
$namedirtry .= $name;
($dev, $ino, $mode, $nlink) = lstat($namedirtry);
#next unless -d _;
next unless { $nlink > 1 }
&directory($name, *mtime, $nlink);
--$subcount;
}
}
}