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#!/usr/bin/env perl
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#!/usr/bin/env perl
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use warnings;
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use warnings;
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use strict;
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use strict;
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# Description: Disk usage for Unix systems
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use version ; our $VERSION = 'v1.2.0';
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our $VERSION = '1.2';
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# Linux disks module for sysinfo client
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# Disk usage for Unix system
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# Author: R. W. Rodolico
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# Author: R. W. Rodolico
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# Date: 2016-04-08
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# Date: 2016-04-08
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#
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# gets information on disks and partitions. Returns them as a hash
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# gets information on disks and partitions. Returns them as a hash
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# uses standard df -kT and parses the output
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# uses standard df -kT and parses the output
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# skips anything that does not have a device with /dev in it
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# skips anything that does not have a device with /dev in it
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# assumes the structure of the output is:
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# assumes the structure of the output is:
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# device fstype size usedSpace availableSpace percentSpace mountPoint
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# device fstype size usedSpace availableSpace percentSpace mountPoint
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# however, the output can sometimes wrap to multi lines, especially if the
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# however, the output can sometimes wrap to multi lines, especially if the
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# device is long. So, we will replace all newlines with spaces, then
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# device is long. So, we will replace all newlines with spaces, then
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# remove space duplications, then split on spaces and process each item in
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# remove space duplications, then split on spaces and process each item in
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# turn.
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# turn.
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# NOTE: this will totally break if you have spaces in your mount point
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# NOTE: this will totally break if you have spaces in your mount point
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#
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# Revision History
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#
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# find our location and use it for searching for libraries
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# find our location and use it for searching for libraries. library.pm must be in the same directory as the calling script
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# or, if run interactively, in the parent of the modules
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BEGIN {
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BEGIN {
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use FindBin;
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use FindBin;
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use File::Spec;
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use File::Spec;
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# prepend the bin directory and its parent
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use lib File::Spec->catdir($FindBin::Bin);
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use lib File::Spec->catdir($FindBin::Bin), File::Spec->catdir("$FindBin::Bin/..");
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eval( 'use library;' );
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eval( 'use library;' );
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die "Could not find library.pm in the code directory\n" if $@; # eval returned and error
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die sprintf( "Could not find library.pm in %s, INC is %s\n", __FILE__, join( "\n", @INC ) ) if $@;
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eval( 'use Data::Dumper;' );
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}
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}
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#####
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# check for valid OS.
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##### Change these to match your needs
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#####
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# Make this a list of all the modules we are going to use. You can replace undef with the version you need, if you like
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my $modulesList = {
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exit 1 unless &checkOS( { 'linux' => undef, 'freebsd' => undef } );
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'Data::Dumper' => undef,
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};
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# check for required commands, return 2 if they don't exist. Enter an full list of all commands required. If one doesn't exist
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# hash of commands that are needed for the system. key is the name of the command and, in some cases, the value will become
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# script returns a 2
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# the full path (from which or where)
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foreach my $command ( 'df' ) {
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my $commandsList = {
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exit 2 unless &validCommandOnSystem( $command );
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'df' => undef,
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};
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}
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# list of operating systems this module can be used on.
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my $osList = {
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# 'mswin32' => undef,
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'freebsd' => undef,
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'linux' => undef,
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};
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# the category the return data should go into. See sysinfo for a list
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my $CATEGORY = 'diskinfo';
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my $CATEGORY = 'diskinfo';
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#####
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##### End of required
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#####
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# some variables needed for our system
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my $errorPrepend = 'error: in ' . __FILE__; # this is prepended to any error messages
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my @out; # temporary location for each line of output
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# Try to load the modules we need. If we can not, then make a list of missing modules for error message.
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for my $module ( keys %$modulesList ) {
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eval ( "use $module;" );
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push @out, "$errorPrepend Could not load $module" if $@;
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}
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if ( ! @out && ! checkOS ( $osList ) ) { # check if we are on an acceptible operating system
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push @out, "$errorPrepend Invalid Operating System";
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}
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if ( !@out && ! validCommandOnSystem ( $commandsList ) ) {
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push @out, "$errorPrepend Can not find some commands needed";
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}
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if ( !@out ) { # we made it, we have everything, so do the processing
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#####
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##### Your code starts here. Remember to push all output onto @out
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#####
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# process physical partitions
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# process physical partitions
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my $temp = qx/df -kT/; # execute the system command df, returned values in kilobytes, showing file system types
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my $temp = qx/df -kT/; # execute the system command df, returned values in kilobytes, showing file system types
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my @temp = split("\n", $temp ); # get array of lines
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my @temp = split("\n", $temp ); # get array of lines
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shift @temp; # get rid of the first line . . . it is nothing but header info
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shift @temp; # get rid of the first line . . . it is nothing but header info
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$temp = join( ' ', @temp ); # rejoin everything back with spaces
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$temp = join( ' ', @temp ); # rejoin everything back with spaces
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$temp =~ s/ +/ /gi; # remove all duplicate spaces
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$temp =~ s/ +/ /gi; # remove all duplicate spaces
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@temp = split( ' ', $temp ); # turn it back into an array of space separated values
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@temp = split( ' ', $temp ); # turn it back into an array of space separated values
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while (@temp) {
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while (@temp) {
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my $device = shift @temp; # get the device name
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my $device = shift @temp; # get the device name
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my $output = '';
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my $output = '';
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$output .= "$CATEGORY\t$device\tfstype\t" . (shift @temp) . "\n"; # next is fs type
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$output .= "$CATEGORY\t$device\tfstype\t" . (shift @temp) . "\n"; # next is fs type
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$output .= "$CATEGORY\t$device\tsize\t" . (shift @temp) . "\n"; # total partition size, in k
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$output .= "$CATEGORY\t$device\tsize\t" . (shift @temp) . "\n"; # total partition size, in k
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$output .= "$CATEGORY\t$device\tused\t" . (shift @temp) . "\n"; # disk usage, in k
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$output .= "$CATEGORY\t$device\tused\t" . (shift @temp) . "\n"; # disk usage, in k
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shift @temp; # $available, not recorded
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shift @temp; # $available, not recorded
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shift @temp; # $percent, not recorded
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shift @temp; # $percent, not recorded
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$output .= "$CATEGORY\t$device\tmount\t" . (shift @temp) . "\n"; # mount point
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$output .= "$CATEGORY\t$device\tmount\t" . (shift @temp) . "\n"; # mount point
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# now, if it is a /dev device, we add it to the diskInfo hash
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# now, if it is a /dev device, we add it to the diskInfo hash
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print $output if $device =~ m/\/dev/;
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push @out, $output if $device =~ m/\/dev/;
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}
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#####
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##### Your code ends here.
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#####
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}
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}
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# If we are testing from the command line (caller is undef), print the results for debugging
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print join( "\n", @out ) . "\n" unless caller;
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# called by do, which has a value of the last assignment made, so make the assignment. The equivilent of a return
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my $return = join( "\n", @out );
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