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code |
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package Sys::FS; |
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{ |
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$Sys::FS::VERSION = '0.11'; |
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} |
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BEGIN { |
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24171
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$Sys::FS::AUTHORITY = 'cpan:TEX'; |
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} |
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# ABSTRACT: filesystem interaction tools |
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1
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use 5.010_000; |
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1
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40
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use mro 'c3'; |
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1
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use feature ':5.10'; |
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112
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1
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use Moose; |
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0
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use namespace::autoclean; |
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# use IO::Handle; |
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# use autodie; |
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# use MooseX::Params::Validate; |
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use Carp; |
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use File::Spec; |
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use File::Copy qw(); |
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use Sys::Run; |
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with 'Log::Tree::RequiredLogger'; |
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has 'sys' => ( |
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'is' => 'ro', |
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'isa' => 'Sys::Run', |
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'lazy' => 1, |
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'builder' => '_init_sys', |
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); |
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sub _init_sys { |
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my $self = shift; |
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my $Sys = Sys::Run::->new( { 'logger' => $self->logger(), } ); |
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return $Sys; |
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} |
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############################################ |
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# Usage : Create an absolute filename |
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sub filename { |
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my ( $self, @dirs ) = @_; |
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49
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if ( !@dirs ) { |
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my $msg = 'Missing option in Sys::FS::filename. Need at least one directory. Caller: ' . ( caller(1) )[3]; |
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$self->logger()->log( message => $msg, level => 'error', ); |
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return; |
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} |
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55
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my $filename = File::Spec->catfile(@dirs); |
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return $filename; |
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} |
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59
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sub switch { |
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my $self = shift; |
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my $sourcefile = shift; |
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my $destfile = shift; |
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64
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if($sourcefile && ref($sourcefile)) { |
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$self->logger()->log( message => 'Refusing to switch multiple source files to one destination. Check your configuration.', level => 'error', ); |
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return; |
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} |
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69
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if($destfile && ref($destfile)) { |
70
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$self->logger()->log( message => 'Refusing to switch one source file to multiple destinations. Check your configuration.', level => 'error', ); |
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return; |
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} |
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74
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my @cmds = (); |
75
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76
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# unlink old backup, if it doesn't exist do nothing |
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if ( -e $destfile . '.bak' ) { |
78
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if ( unlink( $destfile . '.bak' ) ) { |
79
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$self->logger()->log( message => 'source: '.$sourcefile.' - dest: '.$destfile.' - Removed old backup.', level => 'debug', ); |
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} |
81
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else { |
82
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$self->logger()->log( message => 'source: '.$sourcefile.' - dest: '.$destfile.' - Could not remove old backup: ' . $!, level => 'error', ); |
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return; |
84
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} |
85
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} |
86
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87
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# prepare new config for switch |
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if ( File::Copy::copy( $sourcefile, $destfile . '.new' ) ) { |
89
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$self->logger()->log( message => "source: $sourcefile - dest: $destfile - Successfully copied to .new file.", level => 'debug', ); |
90
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} |
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else { |
92
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$self->logger()->log( message => "source: $sourcefile - dest: $destfile - Failed to copy $sourcefile to $destfile.new", level => 'error', ); |
93
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return; |
94
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} |
95
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96
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# create backup of old config |
97
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if ( -e $destfile ) { |
98
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if ( File::Copy::copy( $destfile, $destfile . '.bak' ) ) { |
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$self->logger()->log( message => "source: $sourcefile - dest: $destfile - Successfully created backup.", level => 'debug', ); |
100
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} |
101
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else { |
102
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$self->logger()->log( message => "source: $sourcefile - dest: $destfile - Failed to copy $destfile to $destfile.bak", level => 'error' ); |
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return; |
104
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} |
105
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} |
106
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107
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# perform the final switch (atomic? should be ...) |
108
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if ( rename( $destfile . '.new', $destfile ) ) { |
109
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$self->logger()->log( message => "source: $sourcefile - dest: $destfile - Successfully switched files.", level => 'debug', ); |
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return 1; |
111
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} |
112
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else { |
113
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$self->logger()->log( message => "source: $sourcefile - dest: $destfile - Failed to copy $destfile.new to $destfile", level => 'error', ); |
114
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return; |
115
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} |
116
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} |
117
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118
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############################################ |
119
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# Usage : Create a directory stucture and return the created directory |
120
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sub makedir { |
121
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my $self = shift; |
122
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my $filename = shift; |
123
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my $opts = shift || {}; |
124
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125
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if ( !$filename ) { |
126
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my $msg = 'No filename given in Sys::FS::makedir! Caller: ' . ( caller(1) )[3]; |
127
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$self->logger()->log( message => $msg, level => 'error', ); |
128
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return; |
129
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} |
130
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131
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my $mode = $opts->{'Mode'} || oct(777); |
132
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133
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my @dirs = File::Spec::->splitdir($filename); |
134
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my $dir = q{}; |
135
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my $mkdirs = 0; |
136
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foreach my $i ( 0 .. $#dirs ) { |
137
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$dir = File::Spec::->catdir( @dirs[ 0 .. $i ] ); |
138
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if ( !-d $dir ) { |
139
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my $msg = "Filename: $filename - mkdir $dir, $mode"; |
140
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if ( mkdir( $dir, $mode ) ) { |
141
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$self->logger()->log( message => $msg, level => 'debug', ); |
142
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$mkdirs++; |
143
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} |
144
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else { |
145
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$self->logger()->log( message => $msg . ' FAILED!', level => 'debug', ); |
146
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} |
147
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if ( $opts->{'Uid'} && $opts->{'Gid'} ) { |
148
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chown $opts->{'Uid'}, $opts->{'Gid'} => $dir; |
149
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} |
150
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} |
151
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} |
152
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my $msg = "Filename: $filename - created $mkdirs dirs for $dir"; |
153
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$self->logger()->log( message => $msg, level => 'debug', ); |
154
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return $dir; |
155
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} |
156
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157
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sub spaceleft { |
158
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my $self = shift; |
159
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my $dir = shift; |
160
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my $host = shift || 'localhost'; |
161
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my $opts = shift || {}; |
162
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163
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# check free space on destination |
164
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local $opts->{CaptureOutput} = 1; |
165
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local $opts->{Chomp} = 1; |
166
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my $cmd = 'LANG=C /bin/df -P ' . $dir . ' | /usr/bin/tail -1'; |
167
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my $out = $self->sys()->run( $host, $cmd, $opts ); |
168
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169
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my ( $dev, $onekblocks, $used, $avail, $pcfree, $mount_point ) = split /\s+/, $out; |
170
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$avail = 0 unless $avail =~ m/^\d+$/; |
171
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$onekblocks = 0 unless $onekblocks =~ m/^\d+$/; |
172
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my $gbfree = int( $avail / ( 1024 * 1024 ) ); |
173
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my $gbtotal = int( $onekblocks / ( 1024 * 1024 ) ); |
174
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$pcfree =~ s/%$//; |
175
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176
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return wantarray ? ( $gbfree, $pcfree, $gbtotal ) : $gbfree; |
177
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} |
178
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179
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sub fsck { |
180
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my $self = shift; |
181
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my $device = shift; |
182
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my $fs_type = shift; |
183
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my $opts = shift || {}; |
184
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if ( $fs_type && -x '/sbin/fsck.'.$fs_type ) { |
185
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$self->sys()->run_cmd('/sbin/fsck.'.$fs_type.' -y -p '.$device); |
186
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return 1; |
187
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} |
188
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else { |
189
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my $msg = "fsck($device,$fs_type) - dunno how to check $fs_type!"; |
190
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$self->logger()->log( message => $msg, level => 'error', ); |
191
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return; |
192
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} |
193
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} |
194
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195
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# used by get_mounted_device |
196
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sub mounts { |
197
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my $self = shift; |
198
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my $opts = shift || {}; |
199
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200
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my $mounts_file = '/proc/mounts'; |
201
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if ( open( my $FH, '<', $mounts_file ) ) { |
202
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my @lines = <$FH>; |
203
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# DGR: just reading |
204
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## no critic (RequireCheckedClose) |
205
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close($FH); |
206
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## use critic |
207
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my %mounts = (); |
208
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foreach my $line (@lines) { |
209
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my ( $dev, $mount_point, $fs_type, $options, $dump, $pass ) = split( /\s/, $line ); |
210
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my $key; |
211
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if ( $opts->{DevAsKey} ) { |
212
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$key = $dev; |
213
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$mounts{$key}{'mount_point'} = $mount_point; |
214
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} |
215
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else { # MountPointAsKey |
216
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$key = $mount_point; |
217
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$mounts{$key}{'dev'} = $dev; |
218
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} |
219
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$mounts{$key}{'fs_type'} = $fs_type; |
220
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$mounts{$key}{'options'} = $options; |
221
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$mounts{$key}{'dump'} = $dump; |
222
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$mounts{$key}{'pass'} = $pass; |
223
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} |
224
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return \%mounts; |
225
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} |
226
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else { |
227
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my $msg = "Could not open $mounts_file: $!"; |
228
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$self->logger()->log( message => $msg, level => 'error', ); |
229
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return {}; |
230
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} |
231
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} |
232
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233
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sub is_mounted { |
234
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my $self = shift; |
235
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my $device = shift; |
236
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my $opts = shift || {}; |
237
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238
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# check if given device is mounted |
239
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|
local $opts->{DevAsKey} = 1; |
240
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my $mounts = $self->mounts($opts); |
241
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foreach my $dev ( keys %{$mounts} ) { |
242
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if ( $device =~ m/^$dev/ ) { |
243
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return 1; |
244
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} |
245
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} |
246
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return; |
247
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} |
248
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249
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sub get_mounted_device { |
250
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my $self = shift; |
251
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my $path = shift; |
252
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my $opts = shift || {}; |
253
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254
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$self->logger()->log( message => "$path", level => 'debug', ); |
255
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256
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# get mounts indexed by mount point as key, so we |
257
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# can traverse over the mounts to find the longest matching one |
258
|
|
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|
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|
my $mounts = $self->mounts( { DevAsKey => 0, } ); |
259
|
|
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|
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|
my $device = undef; |
260
|
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|
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|
my $mount_point = undef; |
261
|
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262
|
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|
|
# sort the keys be length, the shortest (the root fs at /) first |
263
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|
|
# and use the longest still-matching one as the mounted device |
264
|
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|
|
# for the given path |
265
|
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|
|
foreach my $key ( sort { length($a) <=> length($b) } keys %{$mounts} ) { |
266
|
|
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|
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|
|
if ( $path =~ m/^$key/ ) { |
267
|
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|
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|
|
$device = $mounts->{$key}{'dev'}; |
268
|
|
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|
|
$mount_point = $key; |
269
|
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|
} |
270
|
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|
} |
271
|
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272
|
|
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|
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|
|
if ( !$mount_point ) { |
273
|
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|
|
my $msg = "get_mounted_device($path) - no matching mount point found!"; |
274
|
|
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|
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|
|
$self->logger()->log( message => $msg, level => 'error', ); |
275
|
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|
|
return; |
276
|
|
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|
|
} |
277
|
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|
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278
|
|
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|
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|
|
$self->logger()->log( |
279
|
|
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|
|
message => 'Path: '.$path.' - returning '.$device.', ' . $mounts->{$mount_point}{'fs_type'} . ', ' . $mounts->{$mount_point}{'options'} . ', '.$mount_point, |
280
|
|
|
|
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|
|
level => 'debug', |
281
|
|
|
|
|
|
|
); |
282
|
|
|
|
|
|
|
|
283
|
|
|
|
|
|
|
return wantarray ? ( $device, $mounts->{$mount_point}{'fs_type'}, $mounts->{$mount_point}{'options'}, $mount_point ) : $device; |
284
|
|
|
|
|
|
|
} |
285
|
|
|
|
|
|
|
|
286
|
|
|
|
|
|
|
sub mount { |
287
|
|
|
|
|
|
|
my $self = shift; |
288
|
|
|
|
|
|
|
my $device = shift; |
289
|
|
|
|
|
|
|
my $mount_point = shift; |
290
|
|
|
|
|
|
|
my $fs_type = shift; |
291
|
|
|
|
|
|
|
my $fs_opts = shift; |
292
|
|
|
|
|
|
|
my $opts = shift || {}; |
293
|
|
|
|
|
|
|
|
294
|
|
|
|
|
|
|
if ( $fs_type eq 'xfs' && $fs_opts !~ m/nouuid/i ) { |
295
|
|
|
|
|
|
|
$fs_opts .= ',nouuid'; |
296
|
|
|
|
|
|
|
} |
297
|
|
|
|
|
|
|
|
298
|
|
|
|
|
|
|
# device must be a block device |
299
|
|
|
|
|
|
|
if ( !-b $device ) { |
300
|
|
|
|
|
|
|
my $msg = "mount($device,$mount_point,$fs_type,$fs_opts) - $device is no block-device!"; |
301
|
|
|
|
|
|
|
$self->logger()->log( message => $msg, level => 'error', ); |
302
|
|
|
|
|
|
|
return; |
303
|
|
|
|
|
|
|
} |
304
|
|
|
|
|
|
|
|
305
|
|
|
|
|
|
|
# mp must be a dir |
306
|
|
|
|
|
|
|
if ( !-d $mount_point ) { |
307
|
|
|
|
|
|
|
my $msg = "mount($device,$mount_point,$fs_type,$fs_opts) - $mount_point is no directory!"; |
308
|
|
|
|
|
|
|
$self->logger()->log( message => $msg, level => 'error', ); |
309
|
|
|
|
|
|
|
return; |
310
|
|
|
|
|
|
|
} |
311
|
|
|
|
|
|
|
|
312
|
|
|
|
|
|
|
my $cmd = "/bin/mount -t $fs_type -o $fs_opts $device $mount_point"; |
313
|
|
|
|
|
|
|
local $opts->{Timeout} = 1200; |
314
|
|
|
|
|
|
|
return $self->sys()->run_cmd( $cmd, $opts ); |
315
|
|
|
|
|
|
|
} |
316
|
|
|
|
|
|
|
|
317
|
|
|
|
|
|
|
sub umount { |
318
|
|
|
|
|
|
|
my $self = shift; |
319
|
|
|
|
|
|
|
my $device = shift; |
320
|
|
|
|
|
|
|
my $opts = shift || {}; |
321
|
|
|
|
|
|
|
|
322
|
|
|
|
|
|
|
# device must be a block device |
323
|
|
|
|
|
|
|
if ( !-b $device ) { |
324
|
|
|
|
|
|
|
my $msg = "umount($device) - $device is no block-device!"; |
325
|
|
|
|
|
|
|
$self->logger()->log( message => $msg, level => 'error', ); |
326
|
|
|
|
|
|
|
return; |
327
|
|
|
|
|
|
|
} |
328
|
|
|
|
|
|
|
|
329
|
|
|
|
|
|
|
my $cmd = "/bin/umount $device >/dev/null 2>&1"; |
330
|
|
|
|
|
|
|
return $self->sys()->run_cmd( $cmd, $opts ); |
331
|
|
|
|
|
|
|
} |
332
|
|
|
|
|
|
|
|
333
|
|
|
|
|
|
|
no Moose; |
334
|
|
|
|
|
|
|
__PACKAGE__->meta->make_immutable; |
335
|
|
|
|
|
|
|
|
336
|
|
|
|
|
|
|
1; |
337
|
|
|
|
|
|
|
|
338
|
|
|
|
|
|
|
__END__ |
339
|
|
|
|
|
|
|
|
340
|
|
|
|
|
|
|
=pod |
341
|
|
|
|
|
|
|
|
342
|
|
|
|
|
|
|
=encoding utf-8 |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
=head1 NAME |
345
|
|
|
|
|
|
|
|
346
|
|
|
|
|
|
|
Sys::FS - filesystem interaction tools |
347
|
|
|
|
|
|
|
|
348
|
|
|
|
|
|
|
=head1 SYNOPSIS |
349
|
|
|
|
|
|
|
|
350
|
|
|
|
|
|
|
use Sys::FS; |
351
|
|
|
|
|
|
|
use Log::Tree; |
352
|
|
|
|
|
|
|
my $FS = Sys::FS::->new({ |
353
|
|
|
|
|
|
|
'logger' => Log::Tree::->new(); |
354
|
|
|
|
|
|
|
}); |
355
|
|
|
|
|
|
|
my $filename = $FS->filename('/tmp', qw(a list of subdirs)); |
356
|
|
|
|
|
|
|
$FS->makedir($filename); |
357
|
|
|
|
|
|
|
my ($gb, $percent) = $FS->spaceleft($filename); |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
=head1 ATTRIBUTES |
360
|
|
|
|
|
|
|
|
361
|
|
|
|
|
|
|
=head2 sys |
362
|
|
|
|
|
|
|
|
363
|
|
|
|
|
|
|
An instance of Linux::System |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
=head1 METHODS |
366
|
|
|
|
|
|
|
|
367
|
|
|
|
|
|
|
=head2 filename |
368
|
|
|
|
|
|
|
|
369
|
|
|
|
|
|
|
Construct a filename out of an array of directories. |
370
|
|
|
|
|
|
|
|
371
|
|
|
|
|
|
|
=head2 fsck |
372
|
|
|
|
|
|
|
|
373
|
|
|
|
|
|
|
Run fsck on the given device. |
374
|
|
|
|
|
|
|
|
375
|
|
|
|
|
|
|
=head2 get_mounted_device |
376
|
|
|
|
|
|
|
|
377
|
|
|
|
|
|
|
Find the device mounted on the given directory. |
378
|
|
|
|
|
|
|
|
379
|
|
|
|
|
|
|
=head2 is_mounted |
380
|
|
|
|
|
|
|
|
381
|
|
|
|
|
|
|
Tests if a given device is currently mounted. |
382
|
|
|
|
|
|
|
|
383
|
|
|
|
|
|
|
=head2 makedir |
384
|
|
|
|
|
|
|
|
385
|
|
|
|
|
|
|
Create a directory stucture and return the created directory |
386
|
|
|
|
|
|
|
|
387
|
|
|
|
|
|
|
=head2 mount |
388
|
|
|
|
|
|
|
|
389
|
|
|
|
|
|
|
Mount a device on a mount point. |
390
|
|
|
|
|
|
|
|
391
|
|
|
|
|
|
|
=head2 mounts |
392
|
|
|
|
|
|
|
|
393
|
|
|
|
|
|
|
Return a hashref containing all mounted devices. |
394
|
|
|
|
|
|
|
|
395
|
|
|
|
|
|
|
=head2 spaceleft |
396
|
|
|
|
|
|
|
|
397
|
|
|
|
|
|
|
Return the amount of free space on the given device in GB. |
398
|
|
|
|
|
|
|
|
399
|
|
|
|
|
|
|
=head2 switch |
400
|
|
|
|
|
|
|
|
401
|
|
|
|
|
|
|
Reliably switch two files. |
402
|
|
|
|
|
|
|
|
403
|
|
|
|
|
|
|
=head2 umount |
404
|
|
|
|
|
|
|
|
405
|
|
|
|
|
|
|
Unmount a given device. |
406
|
|
|
|
|
|
|
|
407
|
|
|
|
|
|
|
=head1 NAME |
408
|
|
|
|
|
|
|
|
409
|
|
|
|
|
|
|
Sys::FS - Misc. Filesystem interaction methods |
410
|
|
|
|
|
|
|
|
411
|
|
|
|
|
|
|
=head1 AUTHOR |
412
|
|
|
|
|
|
|
|
413
|
|
|
|
|
|
|
Dominik Schulz <tex@cpan.org> |
414
|
|
|
|
|
|
|
|
415
|
|
|
|
|
|
|
=head1 COPYRIGHT AND LICENSE |
416
|
|
|
|
|
|
|
|
417
|
|
|
|
|
|
|
This software is copyright (c) 2012 by Dominik Schulz. |
418
|
|
|
|
|
|
|
|
419
|
|
|
|
|
|
|
This is free software; you can redistribute it and/or modify it under |
420
|
|
|
|
|
|
|
the same terms as the Perl 5 programming language system itself. |
421
|
|
|
|
|
|
|
|
422
|
|
|
|
|
|
|
=cut |