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|
#!/usr/bin/perl
# -------------------------------------------------------------------------
# Copyright (C) 2002 TJ Saunders <tj@castaglia.org>
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
#
# $Id: 14.quotatab_modules.diff,v 1.4 2003/11/17 15:30:12 frankie Exp $
#
# -------------------------------------------------------------------------
use strict;
use Fcntl;
use File::Basename qw(basename);
use Getopt::Long;
my $program = basename($0);
my %opts = {};
GetOptions(\%opts, 'G', 'K', 'M', 'dir-tally', 'group=s', 'help',
'user=s', 'verbose');
my $verbose = 0;
my $user_id = -1;
my $group_id = -1;
usage() if defined($opts{'help'});
if (length(@ARGV) < 1) {
print STDOUT "$program: wrong number of parameters\n";
exit 0;
}
unless (defined($opts{'user'}) || defined($opts{'group'})) {
print STDOUT "$program: missing required --group or --user option\n";
exit 0;
}
if (defined($opts{'user'})) {
$user_id = getpwnam($opts{'user'}) or
die "$program: no such user: $opts{'user'}\n";
}
if (defined($opts{'group'})) {
$group_id = getgrnam($opts{'group'}) or
die "$program: no such group: $opts{'group'}\n";
}
$verbose = 1 if (defined($opts{'verbose'}));
my ($total_bytes, $total_files);
foreach my $dir (@ARGV) {
my ($bytes, $files) = get_dir_disk_use($dir);
$total_bytes += $bytes;
$total_files += $files;
}
my $byte_units = "bytes";
if (defined($opts{'K'})) {
$total_bytes /= 1024;
$byte_units = "KB";
} elsif (defined($opts{'M'})) {
$total_bytes /= (1024 * 1024);
$byte_units = "MB";
} elsif (defined($opts{'G'})) {
$total_bytes /= (1024 * 1024 * 1024);
$byte_units = "GB";
}
my $file_units = "files";
$file_units = "file" if ($total_files == 1);
print STDOUT "$program: $total_bytes $byte_units in $total_files $file_units\n";
# done
exit 0;
# --------------------------------------------------------------------------
sub get_dir_disk_use {
my ($dir) = @_;
print STDOUT "$program: examining directory '$dir'\n" if $verbose;
my @subdirs = ();
my $nbytes = 0;
my $nfiles = 0;
unless (opendir(DIR, $dir)) {
print STDERR "$program: unable to open directory '$dir': $!\n";
return (0, 0);
}
my @files = readdir(DIR);
close(DIR);
foreach my $file (@files) {
my ($mode, $uid, $gid, $size) = (lstat("$dir/$file"))[2, 4, 5, 7];
# Is this entry a regular file, or a directory?
unless (-f "$dir/$file" || (-l "$dir/$file" && !-f "$dir/$file") || -d "$dir/$file") {
print STDOUT "$program: skipping '$dir/$file': not a file or directory\n" if $verbose;
next;
}
# Does this file match the given user/group ownership?
if ($user_id != -1 && $group_id != -1) {
if ($uid == $user_id && $gid == $group_id) {
if (defined($opts{'dir-tally'}) && $file eq ".") {
$nbytes += $size;
$nfiles++;
} elsif (! -d "$dir/$file") {
$nbytes += $size;
$nfiles++;
}
} else {
print STDOUT "$program: '$file' does not match UID $user_id, GID $group_id\n" if $verbose;
}
} elsif ($user_id != -1) {
if ($uid == $user_id) {
if (defined($opts{'dir-tally'}) && $file eq ".") {
$nbytes += $size;
$nfiles++;
} elsif (! -d "$dir/$file") {
$nbytes += $size;
$nfiles++;
}
} else {
print STDOUT "$program: '$file' does not match UID $user_id\n" if $verbose;
}
} elsif ($group_id != -1) {
if ($gid == $group_id) {
if (defined($opts{'dir-tally'}) && $file eq ".") {
$nbytes += $size;
$nfiles++;
} elsif (! -d "$dir/$file") {
$nbytes += $size;
$nfiles++;
}
} else {
print STDOUT "$program: '$file' does not match GID $group_id\n" if $verbose;
}
}
# Is this entry a directory? If so, add it to the subdir list.
if (-d "$dir/$file") {
# Skip dot directories
push(@subdirs, "$dir/$file") unless ($file eq "." || $file eq "..");
}
}
# Now, recurse through the directory's subdirectories
foreach my $subdir (@subdirs) {
my ($bytecount, $filecount) = get_dir_disk_use($subdir);
$nbytes += $bytecount;
$nfiles += $filecount;
}
return ($nbytes, $nfiles);
}
# --------------------------------------------------------------------------
sub usage {
print STDOUT <<END_OF_USAGE;
usage: $program [options] dir1 dir2 ... dirN
$program calculates the amount of disk space used underneath the given
directory (or directories). Either a --group or a --user option is required.
If both are used, only files whose ownership matches both the given name and
group will be added to the disk usage sum.
Options:
--G Display the number of bytes in units of gigabytes. The default
number is in bytes.
--K Display the number of bytes in units of kilobytes. The default
number is in bytes.
--M Display the number of bytes in units of megabytes. The default
number is in bytes.
--dir-tally Count the size of directories toward the disk usage sum. The
default is to consider regular files only.
--group Count files owned by this group in the disk usage sum.
--help Display this message.
--user Count files owned by this user in the disk usage sum.
--verbose Display diagnostic output while $program is running.
END_OF_USAGE
exit 0;
}
# --------------------------------------------------------------------------
|
