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############################################################ |
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# |
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# $Id$ |
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# Sys::Filesystem - Retrieve list of filesystems and their properties |
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# |
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# Copyright 2004,2005,2006 Nicola Worthington |
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# Copyright 2009 Jens Rehsack |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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############################################################ |
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package Sys::Filesystem::Unix; |
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# vim:ts=4:sw=4:tw=78 |
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13571
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use 5.008001; |
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use strict; |
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use warnings; |
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215
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use vars qw($VERSION); |
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use Carp qw(croak); |
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use Cwd 'abs_path'; |
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use Fcntl qw(:flock); |
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1168
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6082
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use IO::File; |
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75366
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11127
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$VERSION = '1.406'; |
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sub version() |
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{ |
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0
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1
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return $VERSION; |
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} |
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# Default fstab and mtab layout |
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my @keys = qw(fs_spec fs_file fs_vfstype fs_mntops fs_freq fs_passno); |
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my %special_fs = ( |
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swap => 1, |
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proc => 1 |
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); |
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sub new |
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{ |
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0
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ref( my $class = shift ) && croak 'Class name required'; |
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0
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0
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my %args = @_; |
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0
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0
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my $self = bless( {}, $class ); |
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0
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0
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$args{canondev} and $self->{canondev} = 1; |
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# Defaults |
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0
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0
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$args{fstab} ||= '/etc/fstab'; |
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$args{mtab} ||= '/etc/mtab'; |
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0
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0
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$self->readFsTab( $args{fstab}, \@keys, [ 0, 1, 2 ], \%special_fs ); |
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0
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$self->readMntTab( $args{mtab}, \@keys, [ 0, 1, 2 ], \%special_fs ); |
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66
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0
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0
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delete $self->{canondev}; |
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68
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0
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0
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$self; |
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} |
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71
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sub readFsTab($\@\@\%) |
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{ |
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0
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0
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1
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my ( $self, $fstabPath, $fstabKeys, $pridx, $special_fs ) = @_; |
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75
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# Read the fstab |
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0
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0
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local $/ = "\n"; |
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0
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0
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0
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if ( my $fstab = IO::File->new( $fstabPath, 'r' ) ) |
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{ |
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0
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0
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while (<$fstab>) |
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{ |
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0
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0
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0
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next if ( /^\s*#/ || /^\s*$/ ); |
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83
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# $_ =~ s/#.*$//; |
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# next if( /^\s*$/ ); |
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86
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0
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0
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my @vals = split( ' ', $_ ); |
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0
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0
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0
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0
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$self->{canondev} and -l $vals[ $pridx->[0] ] and $vals[ $pridx->[0] ] = abs_path( $vals[ $pridx->[0] ] ); |
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{mount_point} = $vals[ $pridx->[1] ]; |
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{device} = $vals[ $pridx->[0] ]; |
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0
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{unmounted} = 1 |
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unless ( defined( $self->{ $vals[ $pridx->[1] ] }->{mounted} ) ); |
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93
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0
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0
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0
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if ( defined( $pridx->[2] ) ) |
94
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{ |
95
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0
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0
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my $vfs_type = $self->{ $vals[ $pridx->[1] ] }->{fs_vfstype} = $vals[ $pridx->[2] ]; |
96
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0
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{special} = 1 |
97
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if ( defined( $special_fs->{$vfs_type} ) ); |
98
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} |
99
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else |
100
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{ |
101
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0
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{special} = 0 |
102
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unless ( defined( $self->{ $vals[ $pridx->[1] ] }->{special} ) ); |
103
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} |
104
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105
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0
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0
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for ( my $i = 0; $i < @{$fstabKeys}; ++$i ) |
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0
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0
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106
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{ |
107
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0
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{ $fstabKeys->[$i] } = |
108
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defined( $vals[$i] ) ? $vals[$i] : ''; |
109
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} |
110
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} |
111
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0
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0
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$fstab->close(); |
112
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0
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0
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1; |
113
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} |
114
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else |
115
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{ |
116
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0
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0
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0; |
117
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} |
118
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} |
119
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120
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sub readMntTab($\@\@\%) |
121
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{ |
122
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9
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9
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1
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24
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my ( $self, $mnttabPath, $mnttabKeys, $pridx, $special_fs ) = @_; |
123
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124
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# Read the mtab |
125
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9
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42
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local $/ = "\n"; |
126
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9
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15
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my $mtab; |
127
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9
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50
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33
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53
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if ( ( $mtab = IO::File->new( $mnttabPath, 'r' ) ) && flock( $mtab, LOCK_SH | LOCK_NB ) ) |
128
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{ |
129
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9
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1552
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while (<$mtab>) |
130
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{ |
131
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162
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50
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33
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889
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next if ( /^\s*#/ || /^\s*$/ ); |
132
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133
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# $_ =~ s/#.*$//; |
134
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# next if( /^\s*$/ ); |
135
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136
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162
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4618
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my @vals = split( /\s+/, $_ ); |
137
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162
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50
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66
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879
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$self->{canondev} and -l $vals[ $pridx->[0] ] and $vals[ $pridx->[0] ] = abs_path( $vals[ $pridx->[0] ] ); |
138
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162
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50
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603
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delete $self->{ $vals[ $pridx->[1] ] }->{unmounted} |
139
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if ( exists( $self->{ $vals[ $pridx->[1] ] }->{unmounted} ) ); |
140
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162
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347
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$self->{ $vals[ $pridx->[1] ] }->{mounted} = 1; |
141
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162
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430
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$self->{ $vals[ $pridx->[1] ] }->{mount_point} = $vals[ $pridx->[1] ]; |
142
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162
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343
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$self->{ $vals[ $pridx->[1] ] }->{device} = $vals[ $pridx->[0] ]; |
143
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144
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162
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50
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292
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if ( defined( $pridx->[2] ) ) |
145
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{ |
146
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162
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601
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my $vfs_type = $self->{ $vals[ $pridx->[1] ] }->{fs_vfstype} = $vals[ $pridx->[2] ]; |
147
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162
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100
|
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821
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$self->{ $vals[ $pridx->[1] ] }->{special} = 1 |
148
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if ( defined( $special_fs->{$vfs_type} ) ); |
149
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} |
150
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else |
151
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{ |
152
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0
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0
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0
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$self->{ $vals[ $pridx->[1] ] }->{special} = 0 |
153
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unless ( defined( $self->{ $vals[ $pridx->[1] ] }->{special} ) ); |
154
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} |
155
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156
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162
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229
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for ( my $i = 0; $i < @{$mnttabKeys}; ++$i ) |
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1134
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3188
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157
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{ |
158
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972
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50
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5953
|
$self->{ $vals[ $pridx->[1] ] }->{ $mnttabKeys->[$i] } = |
159
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defined( $vals[$i] ) ? $vals[$i] : ''; |
160
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} |
161
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} |
162
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9
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92
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$mtab->close(); |
163
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9
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211
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1; |
164
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} |
165
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else |
166
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{ |
167
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0
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0; |
168
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} |
169
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} |
170
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171
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sub readMounts |
172
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{ |
173
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0
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|
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0
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1
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my ( $self, $mount_rx, $pridx, $keys, $special, @lines ) = @_; |
174
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175
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0
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foreach my $line (@lines) |
176
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|
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{ |
177
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0
|
0
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|
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if ( my @vals = $line =~ $mount_rx ) |
178
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|
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{ |
179
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0
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0
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0
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|
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$self->{canondev} and -l $vals[ $pridx->[0] ] and $vals[ $pridx->[0] ] = abs_path( $vals[ $pridx->[0] ] ); |
180
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0
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|
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$self->{ $vals[ $pridx->[1] ] }->{mount_point} = $vals[ $pridx->[1] ]; |
181
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0
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$self->{ $vals[ $pridx->[1] ] }->{device} = $vals[ $pridx->[0] ]; |
182
|
0
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$self->{ $vals[ $pridx->[1] ] }->{mounted} = 1; |
183
|
0
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0
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|
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delete $self->{ $vals[ $pridx->[1] ] }->{unmounted} |
184
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|
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if ( exists( $self->{ $vals[ $pridx->[1] ] }->{unmounted} ) ); |
185
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186
|
0
|
0
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if ( defined( $pridx->[2] ) ) |
|
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0
|
|
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|
187
|
|
|
|
|
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{ |
188
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0
|
|
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|
|
my $vfs_type = $self->{ $vals[ $pridx->[1] ] }->{fs_vfstype} = $vals[ $pridx->[2] ]; |
189
|
0
|
0
|
|
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|
|
$self->{ $vals[ $pridx->[1] ] }->{special} = 1 |
190
|
|
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|
|
if ( defined( $special->{$vfs_type} ) ); |
191
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} |
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elsif ( !defined( $self->{ $vals[ $pridx->[1] ] }->{special} ) ) |
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{ |
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0
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$self->{ $vals[ $pridx->[1] ] }->{special} = 0; |
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} |
196
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197
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0
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for ( my $i = 0; $i < @{$keys}; ++$i ) |
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0
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198
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{ |
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0
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$self->{ $vals[ $pridx->[1] ] }->{ $keys->[$i] } = |
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defined( $vals[$i] ) ? $vals[$i] : ''; |
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} |
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} |
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} |
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0
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$self; |
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} |
207
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208
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sub readSwap |
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{ |
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0
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0
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1
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my ( $self, $swap_rx, @lines ) = @_; |
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0
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foreach my $line (@lines) |
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{ |
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0
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0
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if ( my ($dev) = $line =~ $swap_rx ) |
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{ |
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0
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0
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0
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$self->{canondev} and -l $dev and $dev = abs_path($dev); |
216
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0
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0
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$self->{none}->{mount_point} ||= 'none'; |
217
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0
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$self->{none}->{device} = $dev; |
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0
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$self->{none}->{fs_vfstype} = 'swap'; |
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0
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$self->{none}->{mounted} = 1; |
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0
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$self->{none}->{special} = 1; |
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0
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delete $self->{none}->{unmounted}; |
222
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} |
223
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} |
224
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0
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$self; |
225
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} |
226
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227
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1; |
228
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229
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=pod |
230
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231
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=head1 NAME |
232
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233
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Sys::Filesystem::Unix - Return generic Unix filesystem information to Sys::Filesystem |
234
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235
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=head1 SYNOPSIS |
236
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237
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See L. |
238
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239
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=head1 INHERITANCE |
240
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241
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Sys::Filesystem::Unix |
242
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ISA UNIVERSAL |
243
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244
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=head1 METHODS |
245
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246
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=over 4 |
247
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248
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=item version() |
249
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250
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Return the version of the (sub)module. |
251
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252
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=item readFsTab |
253
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254
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This method provides the capability to parse a standard unix fstab file. |
255
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256
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It expects following arguments: |
257
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258
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=over 8 |
259
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260
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=item fstabPath |
261
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262
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Full qualified path to the fstab file to read. |
263
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264
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|
=item fstabKeys |
265
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266
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|
The column names for the fstab file through an array reference. |
267
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268
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|
=item special_fs |
269
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270
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|
Hash reference containing the names of all special file systems having a true |
271
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|
value as key. |
272
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273
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|
=back |
274
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275
|
|
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|
|
This method return true in case the specified file could be opened for reading, |
276
|
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|
|
false otherwise. |
277
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278
|
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|
=item readMntTab |
279
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|
|
280
|
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|
|
This method provides the capability to read abd parse a standard unix |
281
|
|
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|
|
|
|
mount-tab file. The file is locked using flock after opening it. |
282
|
|
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|
|
|
|
283
|
|
|
|
|
|
|
It expects following arguments: |
284
|
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|
285
|
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|
|
=over 8 |
286
|
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|
|
|
287
|
|
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|
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|
|
=item mnttabPath |
288
|
|
|
|
|
|
|
|
289
|
|
|
|
|
|
|
Full qualified path to the mnttab file to read. |
290
|
|
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|
|
|
|
|
291
|
|
|
|
|
|
|
=item mnttabKeys |
292
|
|
|
|
|
|
|
|
293
|
|
|
|
|
|
|
The column names for the mnttab file through an array reference. |
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
=item $special_fs |
296
|
|
|
|
|
|
|
|
297
|
|
|
|
|
|
|
Hash reference containing the names of all special file systems having a true |
298
|
|
|
|
|
|
|
value as key. |
299
|
|
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|
|
|
|
|
300
|
|
|
|
|
|
|
=back |
301
|
|
|
|
|
|
|
|
302
|
|
|
|
|
|
|
This method return true in case the specified file could be opened for reading |
303
|
|
|
|
|
|
|
and locked, false otherwise. |
304
|
|
|
|
|
|
|
|
305
|
|
|
|
|
|
|
=item readMounts |
306
|
|
|
|
|
|
|
|
307
|
|
|
|
|
|
|
This method is called to parse the information got from C system command. |
308
|
|
|
|
|
|
|
It expects following arguments: |
309
|
|
|
|
|
|
|
|
310
|
|
|
|
|
|
|
=over 8 |
311
|
|
|
|
|
|
|
|
312
|
|
|
|
|
|
|
=item mount_rx |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
Regular expression to extract the information from each mount line. |
315
|
|
|
|
|
|
|
|
316
|
|
|
|
|
|
|
=item pridx |
317
|
|
|
|
|
|
|
|
318
|
|
|
|
|
|
|
Array reference containing the index for primary keys of interest in match |
319
|
|
|
|
|
|
|
in following order: device, mount_point, type. |
320
|
|
|
|
|
|
|
|
321
|
|
|
|
|
|
|
=item keys |
322
|
|
|
|
|
|
|
|
323
|
|
|
|
|
|
|
Array reference of the columns of the match - in order of paranteses in |
324
|
|
|
|
|
|
|
regular expression. |
325
|
|
|
|
|
|
|
|
326
|
|
|
|
|
|
|
=item special |
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
Array reference containing the names of the special file system types. |
329
|
|
|
|
|
|
|
|
330
|
|
|
|
|
|
|
=item lines |
331
|
|
|
|
|
|
|
|
332
|
|
|
|
|
|
|
Array containing the lines to parse. |
333
|
|
|
|
|
|
|
|
334
|
|
|
|
|
|
|
=back |
335
|
|
|
|
|
|
|
|
336
|
|
|
|
|
|
|
=item readSwap |
337
|
|
|
|
|
|
|
|
338
|
|
|
|
|
|
|
This method is called to parse the information from the swap status. |
339
|
|
|
|
|
|
|
It expects following arguments: |
340
|
|
|
|
|
|
|
|
341
|
|
|
|
|
|
|
=over 8 |
342
|
|
|
|
|
|
|
|
343
|
|
|
|
|
|
|
=item swap_rx |
344
|
|
|
|
|
|
|
|
345
|
|
|
|
|
|
|
Regular expression to extract the information from each swap status line. |
346
|
|
|
|
|
|
|
This regular expression should have exact one pair of parantheses to |
347
|
|
|
|
|
|
|
identify the swap device. |
348
|
|
|
|
|
|
|
|
349
|
|
|
|
|
|
|
=item lines |
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
Array containing the lines to parse. |
352
|
|
|
|
|
|
|
|
353
|
|
|
|
|
|
|
=back |
354
|
|
|
|
|
|
|
|
355
|
|
|
|
|
|
|
=back |
356
|
|
|
|
|
|
|
|
357
|
|
|
|
|
|
|
=head1 VERSION |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
$Id$ |
360
|
|
|
|
|
|
|
|
361
|
|
|
|
|
|
|
=head1 AUTHOR |
362
|
|
|
|
|
|
|
|
363
|
|
|
|
|
|
|
Nicola Worthington - L |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
Jens Rehsack - L |
366
|
|
|
|
|
|
|
|
367
|
|
|
|
|
|
|
=head1 COPYRIGHT |
368
|
|
|
|
|
|
|
|
369
|
|
|
|
|
|
|
Copyright 2004,2005,2006 Nicola Worthington. |
370
|
|
|
|
|
|
|
Copyright 2008-2014 Jens Rehsack. |
371
|
|
|
|
|
|
|
|
372
|
|
|
|
|
|
|
This software is licensed under The Apache Software License, Version 2.0. |
373
|
|
|
|
|
|
|
|
374
|
|
|
|
|
|
|
L |
375
|
|
|
|
|
|
|
|
376
|
|
|
|
|
|
|
=cut |
377
|
|
|
|
|
|
|
|