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# Paranoid::IO -- Paranoid IO support |
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# |
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# $Id: lib/Paranoid/IO.pm, 2.08 2020/12/31 12:10:06 acorliss Exp $ |
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# |
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# This software is free software. Similar to Perl, you can redistribute it |
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# and/or modify it under the terms of either: |
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# |
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# a) the GNU General Public License |
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# as published by the |
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# Free Software Foundation ; either version 1 |
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# , or any later version |
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# , or |
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# b) the Artistic License 2.0 |
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# , |
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# |
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# subject to the following additional term: No trademark rights to |
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# "Paranoid" have been or are conveyed under any of the above licenses. |
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# However, "Paranoid" may be used fairly to describe this unmodified |
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# software, in good faith, but not as a trademark. |
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# |
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# (c) 2005 - 2020, Arthur Corliss (corliss@digitalmages.com) |
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# (tm) 2008 - 2020, Paranoid Inc. (www.paranoid.com) |
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# |
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##################################################################### |
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##################################################################### |
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# |
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# Environment definitions |
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# |
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##################################################################### |
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package Paranoid::IO; |
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15515
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use 5.008; |
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205
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use strict; |
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1006
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207
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use warnings; |
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1172
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use vars qw($VERSION @EXPORT @EXPORT_OK %EXPORT_TAGS); |
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2455
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230
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use base qw(Exporter); |
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70
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36
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2557
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use Cwd qw(realpath); |
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36
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2086
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use Fcntl qw(:DEFAULT :flock :mode :seek); |
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18489
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use Paranoid; |
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2203
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754
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use Paranoid::Debug qw(:all); |
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5433
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11311
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use Paranoid::Input; |
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2108
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21571
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use IO::Handle; |
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232291
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3730
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($VERSION) = ( q$Revision: 2.08 $ =~ /(\d+(?:\.\d+)+)/sm ); |
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49
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@EXPORT = qw(pclose pcloseAll popen preopen ptell pseek pflock pread |
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pnlread pwrite pappend ptruncate); |
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@EXPORT_OK = ( @EXPORT, qw(PIOBLKSIZE PIOMAXFSIZE) ); |
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%EXPORT_TAGS = ( all => [@EXPORT_OK] ); |
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54
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36
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36
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285
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use constant PDEFPERM => 0666; |
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72
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36
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2505
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use constant PDEFMODE => O_CREAT | O_RDWR; |
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36
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1978
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56
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use constant PDEFBLKSZ => 4096; |
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73
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1863
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use constant PDEFFILESZ => 65536; |
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105711
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59
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##################################################################### |
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# |
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# Module code follows |
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# |
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##################################################################### |
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65
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{ |
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67
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my $mblksz = PDEFBLKSZ; |
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69
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sub PIOBLKSIZE : lvalue { |
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71
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# Purpose: Gets/sets default block size for I/O |
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# Returns: $mblksz |
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# Usage: PIOBLKSIZE |
74
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75
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457
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457
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1
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1168
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$mblksz; |
76
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} |
77
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78
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my $mfsz = PDEFFILESZ; |
79
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80
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sub PIOMAXFSIZE : lvalue { |
81
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82
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# Purpose: Gets/sets default max file size for I/O |
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# Returns: $mfsz |
84
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# Usage: PIOBLKSIZE |
85
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86
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306
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306
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1
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893
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$mfsz; |
87
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} |
88
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89
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# %files: {name} => { |
90
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# pid => $pid, |
91
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# mode => $mode, |
92
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# perms => $perms, |
93
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# fh => $fh, |
94
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# real => $realpath, |
95
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# ltype => $lock, |
96
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# } |
97
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my %files; |
98
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99
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sub _pfFhind ($) { |
100
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101
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# Purpose: Searches for a filename based on the |
102
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# current file handle |
103
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# Returns: String/undefined |
104
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# Usage: $rv = _pfFhind($fh); |
105
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106
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114
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114
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168
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my $fh = shift; |
107
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114
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157
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my $rv; |
108
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109
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114
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327
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pdebug( 'entering w/%s', PDLEVEL2, $fh ); |
110
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114
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338
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pIn(); |
111
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112
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114
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50
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33
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495
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if ( defined $fh and ref $fh eq 'GLOB' ) { |
113
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114
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357
|
foreach ( keys %files ) { |
114
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83
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50
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294
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if ( $files{$_}{fh} eq $fh ) { |
115
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83
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50
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470
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$rv = $_ and last; |
116
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} |
117
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} |
118
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} |
119
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120
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114
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357
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pOut(); |
121
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114
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296
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pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
122
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123
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114
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258
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return $rv; |
124
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} |
125
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126
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sub pclose { |
127
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128
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# Purpose: Closes a cached file handle |
129
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# Returns: Boolean |
130
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# Usage: $rv = plcose($filename) |
131
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# Usage: $rv = plcose($fh) |
132
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133
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82
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82
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1
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2112
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my $filename = shift; |
134
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82
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266
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my $rv = 1; |
135
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82
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206
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my $fh; |
136
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137
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82
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316
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pdebug( 'entering w/%s', PDLEVEL2, $filename ); |
138
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82
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328
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pIn(); |
139
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140
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82
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50
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208
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if ( defined $filename ) { |
141
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142
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# Get the missing variable |
143
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82
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100
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479
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if ( ref $filename eq 'GLOB' ) { |
144
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5
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15
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$fh = $filename; |
145
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5
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15
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$filename = _pfFhind($fh); |
146
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} else { |
147
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77
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100
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401
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$fh = $files{$filename}{fh} if exists $files{$filename}; |
148
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} |
149
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150
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# Close the filehandle |
151
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82
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100
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100
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605
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if ( defined $fh and fileno $fh ) { |
152
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75
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922
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flock $fh, LOCK_UN; |
153
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75
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1115
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$rv = close $fh; |
154
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} |
155
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156
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# Clean up internal data structures |
157
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82
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100
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601
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delete $files{$filename} if defined $filename; |
158
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159
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82
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50
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248
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Paranoid::ERROR = |
160
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pdebug( 'error closing file handle: %s', PDLEVEL1, $! ) |
161
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unless $rv; |
162
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} |
163
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164
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82
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319
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pOut(); |
165
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82
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260
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pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
166
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167
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82
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427
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return $rv; |
168
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} |
169
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170
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sub pcloseAll { |
171
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172
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# Purpose: Closes all filehandles |
173
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# Returns: Boolean |
174
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# Usage: $rv = pcloseAll(); |
175
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176
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36
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36
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1
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293
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my @files = @_; |
177
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36
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295
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my $rv = 1; |
178
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179
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36
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617
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pdebug( 'entering', PDLEVEL3 ); |
180
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36
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439
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pIn(); |
181
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182
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36
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50
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728
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@files = keys %files unless @files; |
183
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36
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382
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foreach (@files) { |
184
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8
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50
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38
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$rv = 0 unless pclose($_); |
185
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} |
186
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187
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36
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464
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pOut(); |
188
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36
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226
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pdebug( 'leaving w/rv: %s', PDLEVEL3, $rv ); |
189
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190
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36
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1484
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return $rv; |
191
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} |
192
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193
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sub _open { |
194
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195
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|
# Purpose: Performs the sysopen call |
196
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# Returns: rv of sysopen |
197
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# Usage: $rv = _open($filename); |
198
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# Usage: $rv = _open($filename, $mode); |
199
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# Usage: $rv = _open($filename, $mode, $perms); |
200
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201
|
85
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85
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211
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my $filename = shift; |
202
|
85
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360
|
my $mode = shift; |
203
|
85
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212
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my $perms = shift; |
204
|
85
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308
|
my ( %tmp, $f, $fh, $rv ); |
205
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|
|
|
|
206
|
85
|
|
|
|
|
308
|
pdebug( 'entering w/(%s)(%s)(%s)', |
207
|
|
|
|
|
|
|
PDLEVEL3, $filename, $mode, $perms ); |
208
|
85
|
|
|
|
|
267
|
pIn(); |
209
|
|
|
|
|
|
|
|
210
|
85
|
50
|
|
|
|
210
|
if ( defined $filename ) { |
211
|
|
|
|
|
|
|
|
212
|
|
|
|
|
|
|
# Detaint mode/perms |
213
|
85
|
|
|
|
|
159
|
$rv = 1; |
214
|
85
|
100
|
|
|
|
213
|
$mode = PDEFMODE unless defined $mode; |
215
|
85
|
100
|
|
|
|
215
|
$perms = PDEFPERM unless defined $perms; |
216
|
85
|
50
|
|
|
|
844
|
unless ( detaint( $mode, 'int' ) ) { |
217
|
0
|
|
|
|
|
0
|
$rv = 0; |
218
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
219
|
|
|
|
|
|
|
pdebug( 'invalid mode passed: %s', PDLEVEL1, $mode ); |
220
|
|
|
|
|
|
|
} |
221
|
85
|
50
|
|
|
|
319
|
unless ( detaint( $perms, 'int' ) ) { |
222
|
0
|
|
|
|
|
0
|
$rv = 0; |
223
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
224
|
|
|
|
|
|
|
pdebug( 'invalid perm passed: %s', PDLEVEL1, $perms ); |
225
|
|
|
|
|
|
|
} |
226
|
|
|
|
|
|
|
|
227
|
|
|
|
|
|
|
# Prep file record |
228
|
|
|
|
|
|
|
%tmp = ( |
229
|
85
|
|
|
|
|
708
|
mode => $mode, |
230
|
|
|
|
|
|
|
perms => $perms, |
231
|
|
|
|
|
|
|
pid => $$, |
232
|
|
|
|
|
|
|
ltype => LOCK_UN, |
233
|
|
|
|
|
|
|
); |
234
|
|
|
|
|
|
|
|
235
|
|
|
|
|
|
|
# Detaint filename |
236
|
85
|
50
|
|
|
|
239
|
if ($rv) { |
237
|
85
|
50
|
|
|
|
272
|
if ( detaint( $filename, 'filename', $f ) ) { |
238
|
|
|
|
|
|
|
|
239
|
|
|
|
|
|
|
# Attempt to open the fila |
240
|
|
|
|
|
|
|
$rv = |
241
|
|
|
|
|
|
|
( $tmp{mode} & O_CREAT ) |
242
|
|
|
|
|
|
|
? sysopen $fh, $f, $tmp{mode}, $tmp{perms} |
243
|
|
|
|
|
|
|
: sysopen $fh, |
244
|
85
|
100
|
|
|
|
5264
|
$f, $tmp{mode}; |
245
|
85
|
100
|
|
|
|
462
|
if ($rv) { |
246
|
74
|
|
|
|
|
240
|
$tmp{fh} = $fh; |
247
|
74
|
|
|
|
|
2497
|
$tmp{real} = realpath($filename); |
248
|
74
|
|
|
|
|
699
|
$files{$filename} = {%tmp}; |
249
|
|
|
|
|
|
|
} else { |
250
|
11
|
|
|
|
|
47
|
Paranoid::ERROR = pdebug( 'failed to open %s: %s', |
251
|
|
|
|
|
|
|
PDLEVEL1, $filename, $! ); |
252
|
|
|
|
|
|
|
} |
253
|
|
|
|
|
|
|
|
254
|
|
|
|
|
|
|
} else { |
255
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
256
|
|
|
|
|
|
|
pdebug( 'failed to detaint %s', PDLEVEL1, $filename ); |
257
|
|
|
|
|
|
|
} |
258
|
|
|
|
|
|
|
} |
259
|
|
|
|
|
|
|
} |
260
|
|
|
|
|
|
|
|
261
|
85
|
|
|
|
|
441
|
pOut(); |
262
|
85
|
|
|
|
|
250
|
pdebug( 'leaving w/rv: %s', PDLEVEL3, $rv ); |
263
|
|
|
|
|
|
|
|
264
|
85
|
|
|
|
|
468
|
return $rv; |
265
|
|
|
|
|
|
|
} |
266
|
|
|
|
|
|
|
|
267
|
|
|
|
|
|
|
sub _reopen { |
268
|
|
|
|
|
|
|
|
269
|
|
|
|
|
|
|
# Purpose: Reopens an open file handle |
270
|
|
|
|
|
|
|
# Returns: rv of _open |
271
|
|
|
|
|
|
|
# Usage: $rv = _reopen($filename); |
272
|
|
|
|
|
|
|
# Usage: $rv = _reopen($fh); |
273
|
|
|
|
|
|
|
|
274
|
6
|
|
|
6
|
|
64
|
my $filename = shift; |
275
|
6
|
|
|
|
|
31
|
my ( %tmp, $fh, $pos, $rv, $af ); |
276
|
|
|
|
|
|
|
|
277
|
6
|
|
|
|
|
44
|
pdebug( 'entering w/(%s)', PDLEVEL3, $filename ); |
278
|
6
|
|
|
|
|
458
|
pIn(); |
279
|
|
|
|
|
|
|
|
280
|
6
|
50
|
33
|
|
|
258
|
if ( defined $filename and exists $files{$filename} ) { |
281
|
|
|
|
|
|
|
|
282
|
|
|
|
|
|
|
# Get a copy of the file record |
283
|
6
|
|
|
|
|
67
|
%tmp = %{ $files{$filename} }; |
|
6
|
|
|
|
|
403
|
|
284
|
6
|
|
|
|
|
64
|
$fh = $tmp{fh}; |
285
|
|
|
|
|
|
|
|
286
|
|
|
|
|
|
|
# Get the current cursor position |
287
|
6
|
50
|
|
|
|
161
|
$pos = fileno $fh ? sysseek $fh, 0, SEEK_CUR : 0; |
288
|
6
|
|
|
|
|
564
|
$af = $fh->autoflush; |
289
|
|
|
|
|
|
|
|
290
|
|
|
|
|
|
|
# Close the old file handle |
291
|
6
|
|
|
|
|
1414
|
$tmp{fh} = $fh = undef; |
292
|
6
|
50
|
|
|
|
198
|
if ( pclose($filename) ) { |
293
|
|
|
|
|
|
|
|
294
|
|
|
|
|
|
|
# Remove O_TRUNC |
295
|
6
|
100
|
|
|
|
36
|
$tmp{mode} ^= O_TRUNC if $tmp{mode} & O_TRUNC; |
296
|
|
|
|
|
|
|
|
297
|
|
|
|
|
|
|
# Open the file and move the cursor back where it was |
298
|
6
|
|
|
|
|
91
|
$rv = _open( @tmp{qw(real mode perms)} ); |
299
|
6
|
50
|
|
|
|
60
|
if ($rv) { |
300
|
|
|
|
|
|
|
|
301
|
|
|
|
|
|
|
# Move the cursor back to where it was |
302
|
6
|
|
|
|
|
33
|
$fh = $files{ $tmp{real} }{fh}; |
303
|
6
|
|
|
|
|
33
|
$fh->autoflush($af); |
304
|
6
|
|
|
|
|
406
|
$rv = sysseek $fh, $pos, SEEK_SET; |
305
|
|
|
|
|
|
|
|
306
|
|
|
|
|
|
|
# Move the record over to the original file name |
307
|
6
|
|
|
|
|
31
|
$files{$filename} = { %{ $files{ $tmp{real} } } }; |
|
6
|
|
|
|
|
59
|
|
308
|
6
|
50
|
|
|
|
123
|
delete $files{ $tmp{real} } if $filename ne $tmp{real}; |
309
|
|
|
|
|
|
|
} |
310
|
|
|
|
|
|
|
} |
311
|
|
|
|
|
|
|
} |
312
|
|
|
|
|
|
|
|
313
|
6
|
|
|
|
|
125
|
pOut(); |
314
|
6
|
|
|
|
|
25
|
pdebug( 'leaving w/rv: %s', PDLEVEL3, $rv ); |
315
|
|
|
|
|
|
|
|
316
|
6
|
|
|
|
|
39
|
return $rv; |
317
|
|
|
|
|
|
|
} |
318
|
|
|
|
|
|
|
|
319
|
|
|
|
|
|
|
sub popen { |
320
|
|
|
|
|
|
|
|
321
|
|
|
|
|
|
|
# Purpose: Performs a sysopen with file descriptor caching |
322
|
|
|
|
|
|
|
# Returns: file handle |
323
|
|
|
|
|
|
|
# Usage: $fh = popen($filename, $mode, $perms); |
324
|
|
|
|
|
|
|
|
325
|
716
|
|
|
716
|
1
|
1527
|
my $filename = shift; |
326
|
716
|
|
|
|
|
973
|
my $mode = shift; |
327
|
716
|
|
|
|
|
985
|
my $perms = shift; |
328
|
716
|
|
|
|
|
1096
|
my ( %tmp, $fh, $f, $pos, $rv ); |
329
|
|
|
|
|
|
|
|
330
|
716
|
|
|
|
|
1835
|
pdebug( 'entering w/(%s)(%s)(%s)', |
331
|
|
|
|
|
|
|
PDLEVEL2, $filename, $mode, $perms ); |
332
|
716
|
|
|
|
|
1753
|
pIn(); |
333
|
|
|
|
|
|
|
|
334
|
|
|
|
|
|
|
# Make sure we weren't passed a file handle, but if we |
335
|
|
|
|
|
|
|
# were attempt to find the actual filename |
336
|
716
|
50
|
|
|
|
1498
|
if ( defined $filename ) { |
337
|
716
|
100
|
|
|
|
1480
|
if ( ref $filename eq 'GLOB' ) { |
338
|
89
|
|
|
|
|
151
|
$fh = $filename; |
339
|
89
|
|
|
|
|
194
|
$filename = _pfFhind($filename); |
340
|
|
|
|
|
|
|
} else { |
341
|
627
|
100
|
|
|
|
2256
|
$fh = $files{$filename}{fh} if exists $files{$filename}; |
342
|
|
|
|
|
|
|
} |
343
|
|
|
|
|
|
|
} |
344
|
|
|
|
|
|
|
|
345
|
716
|
100
|
100
|
|
|
3001
|
if ( defined $filename and exists $files{$filename} ) { |
|
|
100
|
33
|
|
|
|
|
|
|
50
|
|
|
|
|
|
346
|
|
|
|
|
|
|
|
347
|
|
|
|
|
|
|
# Make sure pid is the same |
348
|
625
|
100
|
|
|
|
1856
|
if ( $files{$filename}{pid} == $$ ) { |
349
|
|
|
|
|
|
|
|
350
|
619
|
50
|
|
|
|
1675
|
if ( fileno $fh ) { |
351
|
|
|
|
|
|
|
|
352
|
|
|
|
|
|
|
# Return existing filehandle |
353
|
619
|
|
|
|
|
2324
|
pdebug( 'returning cached file handle', PDLEVEL2 ); |
354
|
619
|
|
|
|
|
1131
|
$rv = $fh; |
355
|
|
|
|
|
|
|
|
356
|
|
|
|
|
|
|
} else { |
357
|
|
|
|
|
|
|
|
358
|
|
|
|
|
|
|
# Reopen a filehandle that was closed outside |
359
|
|
|
|
|
|
|
# of this module |
360
|
0
|
|
|
|
|
0
|
pdebug( 'reopening closed file handle', PDLEVEL2 ); |
361
|
0
|
0
|
|
|
|
0
|
$rv = $files{$filename}{fh} if _reopen($filename); |
362
|
|
|
|
|
|
|
} |
363
|
|
|
|
|
|
|
|
364
|
|
|
|
|
|
|
} else { |
365
|
|
|
|
|
|
|
|
366
|
6
|
|
|
|
|
194
|
pdebug( 'reopening inherited file handle in child', |
367
|
|
|
|
|
|
|
PDLEVEL2 ); |
368
|
6
|
50
|
|
|
|
98
|
$rv = $files{$filename}{fh} if _reopen($filename); |
369
|
|
|
|
|
|
|
|
370
|
|
|
|
|
|
|
} |
371
|
|
|
|
|
|
|
|
372
|
|
|
|
|
|
|
} elsif ( defined $filename ) { |
373
|
|
|
|
|
|
|
|
374
|
79
|
|
|
|
|
288
|
pdebug( 'opening new file handle', PDLEVEL2 ); |
375
|
79
|
100
|
|
|
|
303
|
$rv = $files{$filename}{fh} if _open( $filename, $mode, $perms ); |
376
|
|
|
|
|
|
|
|
377
|
|
|
|
|
|
|
} elsif ( !defined $filename and defined $fh ) { |
378
|
12
|
|
|
|
|
29
|
Paranoid::ERROR = |
379
|
|
|
|
|
|
|
pdebug( 'popen called with an unmanaged file handle', |
380
|
|
|
|
|
|
|
PDLEVEL1 ); |
381
|
12
|
100
|
|
|
|
37
|
$rv = fileno $fh ? $fh : undef; |
382
|
|
|
|
|
|
|
} else { |
383
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
384
|
|
|
|
|
|
|
pdebug( 'attempted to open a file with an undefined name', |
385
|
|
|
|
|
|
|
PDLEVEL1 ); |
386
|
|
|
|
|
|
|
} |
387
|
|
|
|
|
|
|
|
388
|
716
|
|
|
|
|
1774
|
pOut(); |
389
|
716
|
|
|
|
|
1755
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
390
|
|
|
|
|
|
|
|
391
|
716
|
|
|
|
|
2088
|
return $rv; |
392
|
|
|
|
|
|
|
} |
393
|
|
|
|
|
|
|
|
394
|
|
|
|
|
|
|
sub preopen { |
395
|
|
|
|
|
|
|
|
396
|
|
|
|
|
|
|
# Purpose: Reopens either the named files or all |
397
|
|
|
|
|
|
|
# Returns: Boolean |
398
|
|
|
|
|
|
|
# Usage: $rv = preopen(); |
399
|
|
|
|
|
|
|
# Usage: $rv = preopen(@filenames); |
400
|
|
|
|
|
|
|
|
401
|
0
|
|
|
0
|
1
|
0
|
my @files = @_; |
402
|
0
|
|
|
|
|
0
|
my $rv = 1; |
403
|
|
|
|
|
|
|
|
404
|
0
|
|
|
|
|
0
|
pdebug( 'entering w/%s', PDLEVEL2, @files ); |
405
|
0
|
|
|
|
|
0
|
pIn(); |
406
|
|
|
|
|
|
|
|
407
|
0
|
0
|
|
|
|
0
|
@files = keys %files unless @files; |
408
|
0
|
0
|
|
|
|
0
|
foreach (@files) { $rv = 0 unless _reopen($_) } |
|
0
|
|
|
|
|
0
|
|
409
|
|
|
|
|
|
|
|
410
|
0
|
|
|
|
|
0
|
pOut(); |
411
|
0
|
|
|
|
|
0
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
412
|
|
|
|
|
|
|
|
413
|
0
|
|
|
|
|
0
|
return $rv; |
414
|
|
|
|
|
|
|
} |
415
|
|
|
|
|
|
|
|
416
|
|
|
|
|
|
|
sub pflock { |
417
|
|
|
|
|
|
|
|
418
|
|
|
|
|
|
|
# Purpose: Performs file-locking operations on the passed filename |
419
|
|
|
|
|
|
|
# Returns: Boolean |
420
|
|
|
|
|
|
|
# Usage: $rv = pflock($filename, LOCK_EX); |
421
|
|
|
|
|
|
|
|
422
|
1036
|
|
|
1036
|
1
|
2106
|
my $filename = shift; |
423
|
1036
|
|
|
|
|
1458
|
my $lock = shift; |
424
|
1036
|
|
|
|
|
1655
|
my ( $rv, $fh ); |
425
|
1036
|
|
|
|
|
4411
|
local $!; |
426
|
|
|
|
|
|
|
|
427
|
1036
|
|
|
|
|
3391
|
pdebug( 'entering w/(%s)(%s)', PDLEVEL2, $filename, $lock ); |
428
|
1036
|
|
|
|
|
2818
|
pIn(); |
429
|
|
|
|
|
|
|
|
430
|
1036
|
50
|
|
|
|
2078
|
if ( defined $filename ) { |
431
|
|
|
|
|
|
|
|
432
|
|
|
|
|
|
|
# Get the missing variable |
433
|
1036
|
100
|
|
|
|
2176
|
if ( ref $filename eq 'GLOB' ) { |
434
|
20
|
|
|
|
|
33
|
$fh = $filename; |
435
|
20
|
|
|
|
|
40
|
$filename = _pfFhind($fh); |
436
|
|
|
|
|
|
|
} else { |
437
|
1016
|
100
|
|
|
|
2835
|
$fh = $files{$filename}{fh} if exists $files{$filename}; |
438
|
|
|
|
|
|
|
} |
439
|
|
|
|
|
|
|
|
440
|
1036
|
100
|
|
|
|
2106
|
if ( defined $fh ) { |
441
|
|
|
|
|
|
|
|
442
|
|
|
|
|
|
|
# Apply the lock |
443
|
1034
|
|
|
|
|
89084
|
$rv = flock $fh, $lock; |
444
|
|
|
|
|
|
|
|
445
|
|
|
|
|
|
|
# Record change to internal state if we're tracking this file |
446
|
|
|
|
|
|
|
$files{$filename}{ltype} = $lock |
447
|
|
|
|
|
|
|
if defined $filename |
448
|
1034
|
50
|
66
|
|
|
6478
|
and exists $files{$filename}; |
449
|
|
|
|
|
|
|
|
450
|
1034
|
50
|
|
|
|
2251
|
Paranoid::ERROR = |
451
|
|
|
|
|
|
|
pdebug( 'error attempting to pflock: %s', PDLEVEL1, $! ) |
452
|
|
|
|
|
|
|
unless $rv; |
453
|
|
|
|
|
|
|
} |
454
|
|
|
|
|
|
|
} |
455
|
|
|
|
|
|
|
|
456
|
1036
|
|
|
|
|
3659
|
pOut(); |
457
|
1036
|
|
|
|
|
2692
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
458
|
|
|
|
|
|
|
|
459
|
1036
|
|
|
|
|
4050
|
return $rv; |
460
|
|
|
|
|
|
|
} |
461
|
|
|
|
|
|
|
} |
462
|
|
|
|
|
|
|
|
463
|
|
|
|
|
|
|
sub ptell { |
464
|
|
|
|
|
|
|
|
465
|
|
|
|
|
|
|
# Purpose: Returns the cursor position in the file handle |
466
|
|
|
|
|
|
|
# Returns: Integer |
467
|
|
|
|
|
|
|
# Usage: $pos = ptell($filename); |
468
|
|
|
|
|
|
|
|
469
|
77
|
|
|
77
|
1
|
2462
|
my $filename = shift; |
470
|
77
|
|
|
|
|
218
|
my ( $rv, $fh ); |
471
|
77
|
|
|
|
|
636
|
local $!; |
472
|
|
|
|
|
|
|
|
473
|
77
|
|
|
|
|
284
|
pdebug( 'entering w/%s', PDLEVEL2, $filename ); |
474
|
77
|
|
|
|
|
207
|
pIn(); |
475
|
|
|
|
|
|
|
|
476
|
77
|
50
|
|
|
|
191
|
if ( defined $filename ) { |
477
|
|
|
|
|
|
|
|
478
|
77
|
|
|
|
|
185
|
$fh = popen( $filename, O_RDWR ); |
479
|
77
|
100
|
|
|
|
221
|
if ( defined $fh ) { |
480
|
75
|
|
|
|
|
691
|
$rv = sysseek $fh, 0, SEEK_CUR; |
481
|
75
|
50
|
|
|
|
317
|
Paranoid::ERROR = |
482
|
|
|
|
|
|
|
pdebug( 'error attempting to ptell: %s', PDLEVEL1, $! ) |
483
|
|
|
|
|
|
|
unless $rv; |
484
|
|
|
|
|
|
|
} |
485
|
|
|
|
|
|
|
} |
486
|
|
|
|
|
|
|
|
487
|
77
|
|
|
|
|
276
|
pOut(); |
488
|
77
|
|
|
|
|
238
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
489
|
|
|
|
|
|
|
|
490
|
77
|
|
|
|
|
365
|
return $rv; |
491
|
|
|
|
|
|
|
} |
492
|
|
|
|
|
|
|
|
493
|
|
|
|
|
|
|
sub pseek { |
494
|
|
|
|
|
|
|
|
495
|
|
|
|
|
|
|
# Purpose: Performs a sysseek |
496
|
|
|
|
|
|
|
# Returns: Integer/undef |
497
|
|
|
|
|
|
|
# Usage: $cur = pseek($filename, $curpos, $whence); |
498
|
|
|
|
|
|
|
|
499
|
17
|
|
|
17
|
1
|
601589
|
my $filename = shift; |
500
|
17
|
|
|
|
|
35
|
my $setpos = shift; |
501
|
17
|
|
|
|
|
29
|
my $whence = shift; |
502
|
17
|
|
|
|
|
33
|
my ( $rv, $fh ); |
503
|
17
|
|
|
|
|
140
|
local $!; |
504
|
|
|
|
|
|
|
|
505
|
17
|
|
|
|
|
116
|
pdebug( 'entering w/(%s)(%s)(%s)', PDLEVEL2, $filename, $setpos, |
506
|
|
|
|
|
|
|
$whence ); |
507
|
17
|
|
|
|
|
61
|
pIn(); |
508
|
|
|
|
|
|
|
|
509
|
17
|
50
|
|
|
|
46
|
if ( defined $filename ) { |
510
|
|
|
|
|
|
|
|
511
|
17
|
|
|
|
|
56
|
$fh = popen( $filename, O_RDWR ); |
512
|
17
|
100
|
|
|
|
54
|
if ( defined $fh ) { |
513
|
15
|
|
|
|
|
167
|
$rv = sysseek $fh, $setpos, $whence; |
514
|
15
|
100
|
|
|
|
78
|
Paranoid::ERROR = |
515
|
|
|
|
|
|
|
pdebug( 'error attempting to pseek: %s', PDLEVEL1, $! ) |
516
|
|
|
|
|
|
|
unless $rv; |
517
|
|
|
|
|
|
|
} |
518
|
|
|
|
|
|
|
} |
519
|
|
|
|
|
|
|
|
520
|
17
|
|
|
|
|
72
|
pOut(); |
521
|
17
|
|
|
|
|
50
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
522
|
|
|
|
|
|
|
|
523
|
17
|
|
|
|
|
180
|
return $rv; |
524
|
|
|
|
|
|
|
} |
525
|
|
|
|
|
|
|
|
526
|
|
|
|
|
|
|
sub pwrite { |
527
|
|
|
|
|
|
|
|
528
|
|
|
|
|
|
|
# Purpose: Performs a syswrite w/locking |
529
|
|
|
|
|
|
|
# Returns: Integer/undef |
530
|
|
|
|
|
|
|
# Usage: $bytes = pwrite($filename, $text); |
531
|
|
|
|
|
|
|
# Usage: $bytes = pwrite($filename, $text, $length); |
532
|
|
|
|
|
|
|
# Usage: $bytes = pwrite($filename, $text, $length, $offset); |
533
|
|
|
|
|
|
|
|
534
|
16
|
|
|
16
|
1
|
5430
|
my $filename = shift; |
535
|
16
|
|
|
|
|
53
|
my $out = shift; |
536
|
16
|
|
|
|
|
51
|
my $wlen = shift; |
537
|
16
|
|
|
|
|
22
|
my $offset = shift; |
538
|
16
|
|
|
|
|
30
|
my ( $fh, $rv ); |
539
|
|
|
|
|
|
|
|
540
|
16
|
|
|
|
|
96
|
pdebug( 'entering w/(%s)(%s)(%s)(%s)', |
541
|
|
|
|
|
|
|
PDLEVEL2, $filename, $out, $wlen, $offset ); |
542
|
16
|
|
|
|
|
53
|
pIn(); |
543
|
|
|
|
|
|
|
|
544
|
16
|
100
|
66
|
|
|
147
|
if ( defined $filename and defined $out and length $out ) { |
|
|
|
100
|
|
|
|
|
545
|
|
|
|
|
|
|
|
546
|
|
|
|
|
|
|
# Opportunistically open a file handle if needed, |
547
|
|
|
|
|
|
|
# otherwise, just retrieve the existing file handle |
548
|
12
|
|
|
|
|
55
|
$fh = popen( $filename, O_WRONLY | O_CREAT | O_TRUNC ); |
549
|
|
|
|
|
|
|
|
550
|
|
|
|
|
|
|
# Smoke 'em if you got'em... |
551
|
12
|
50
|
|
|
|
31
|
if ( defined $fh ) { |
552
|
12
|
50
|
|
|
|
38
|
if ( pflock( $filename, LOCK_EX ) ) { |
553
|
12
|
100
|
|
|
|
35
|
$wlen = length $out unless defined $wlen; |
554
|
12
|
100
|
|
|
|
22
|
$offset = 0 unless defined $offset; |
555
|
12
|
|
|
|
|
330
|
$rv = syswrite $fh, $out, $wlen, $offset; |
556
|
12
|
50
|
|
|
|
52
|
if ( defined $rv ) { |
557
|
12
|
|
|
|
|
43
|
pdebug( 'wrote %d bytes', PDLEVEL2, $rv ); |
558
|
|
|
|
|
|
|
} else { |
559
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
560
|
|
|
|
|
|
|
pdebug( 'failed to write to file handle: %s', |
561
|
|
|
|
|
|
|
PDLEVEL1, $! ); |
562
|
|
|
|
|
|
|
} |
563
|
12
|
|
|
|
|
31
|
pflock( $filename, LOCK_UN ); |
564
|
|
|
|
|
|
|
} |
565
|
|
|
|
|
|
|
} |
566
|
|
|
|
|
|
|
} |
567
|
|
|
|
|
|
|
|
568
|
16
|
|
|
|
|
52
|
pOut(); |
569
|
16
|
|
|
|
|
38
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
570
|
|
|
|
|
|
|
|
571
|
16
|
|
|
|
|
48
|
return $rv; |
572
|
|
|
|
|
|
|
} |
573
|
|
|
|
|
|
|
|
574
|
|
|
|
|
|
|
sub pappend ($$;$$) { |
575
|
|
|
|
|
|
|
|
576
|
|
|
|
|
|
|
# Purpose: Appends the data to the end of the file, |
577
|
|
|
|
|
|
|
# but does not move the file cursor |
578
|
|
|
|
|
|
|
# Returns: Integer/undef |
579
|
|
|
|
|
|
|
# Usage: $rv = pappend($filename, $content); |
580
|
|
|
|
|
|
|
# Usage: $rv = pappend($filename, $content, $length); |
581
|
|
|
|
|
|
|
# Usage: $rv = pappend($filename, $content, $length, $offset); |
582
|
|
|
|
|
|
|
|
583
|
260
|
|
|
260
|
1
|
633
|
my $filename = shift; |
584
|
260
|
|
|
|
|
552
|
my $out = shift; |
585
|
260
|
|
|
|
|
436
|
my $wlen = shift; |
586
|
260
|
|
|
|
|
368
|
my $offset = shift; |
587
|
260
|
|
|
|
|
826
|
my ( $fh, $pos, $rv ); |
588
|
|
|
|
|
|
|
|
589
|
260
|
|
|
|
|
980
|
pdebug( 'entering w/(%s)(%s)(%s)(%s)', |
590
|
|
|
|
|
|
|
PDLEVEL2, $filename, $out, $wlen, $offset ); |
591
|
260
|
|
|
|
|
715
|
pIn(); |
592
|
|
|
|
|
|
|
|
593
|
260
|
50
|
33
|
|
|
2082
|
if ( defined $filename and defined $out and length $out ) { |
|
|
|
33
|
|
|
|
|
594
|
|
|
|
|
|
|
|
595
|
|
|
|
|
|
|
# Opportunistically opena file handle in append mode |
596
|
260
|
|
|
|
|
749
|
$fh = popen( $filename, O_WRONLY | O_CREAT | O_APPEND ); |
597
|
|
|
|
|
|
|
|
598
|
|
|
|
|
|
|
# Smoke 'em if you got'em... |
599
|
260
|
50
|
|
|
|
620
|
if ( defined $fh ) { |
600
|
|
|
|
|
|
|
|
601
|
|
|
|
|
|
|
# Lock the file |
602
|
260
|
50
|
|
|
|
773
|
if ( pflock( $filename, LOCK_EX ) ) { |
603
|
|
|
|
|
|
|
|
604
|
|
|
|
|
|
|
# Save the current position |
605
|
260
|
|
|
|
|
2416
|
$pos = sysseek $fh, 0, SEEK_CUR; |
606
|
|
|
|
|
|
|
|
607
|
|
|
|
|
|
|
# Seek to the end of the file |
608
|
260
|
50
|
33
|
|
|
2187
|
if ( $pos and sysseek $fh, 0, SEEK_END ) { |
609
|
|
|
|
|
|
|
|
610
|
|
|
|
|
|
|
# write the content |
611
|
260
|
50
|
|
|
|
1832
|
$wlen = length $out unless defined $wlen; |
612
|
260
|
50
|
|
|
|
623
|
$offset = 0 unless defined $offset; |
613
|
260
|
|
|
|
|
4949
|
$rv = syswrite $fh, $out, $wlen, $offset; |
614
|
260
|
50
|
|
|
|
988
|
if ( defined $rv ) { |
615
|
260
|
|
|
|
|
1053
|
pdebug( 'wrote %d bytes', PDLEVEL2, $rv ); |
616
|
|
|
|
|
|
|
} else { |
617
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
618
|
|
|
|
|
|
|
pdebug( 'failed to write to file handle: %s', |
619
|
|
|
|
|
|
|
PDLEVEL1, $! ); |
620
|
|
|
|
|
|
|
} |
621
|
|
|
|
|
|
|
} |
622
|
|
|
|
|
|
|
|
623
|
|
|
|
|
|
|
# Seek back to original position |
624
|
260
|
|
|
|
|
2281
|
sysseek $fh, $pos, SEEK_SET; |
625
|
|
|
|
|
|
|
|
626
|
|
|
|
|
|
|
# Unlock the file handle |
627
|
260
|
|
|
|
|
999
|
pflock( $filename, LOCK_UN ); |
628
|
|
|
|
|
|
|
} |
629
|
|
|
|
|
|
|
} |
630
|
|
|
|
|
|
|
} |
631
|
|
|
|
|
|
|
|
632
|
260
|
|
|
|
|
816
|
pOut(); |
633
|
260
|
|
|
|
|
661
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
634
|
|
|
|
|
|
|
|
635
|
260
|
|
|
|
|
1122
|
return $rv; |
636
|
|
|
|
|
|
|
} |
637
|
|
|
|
|
|
|
|
638
|
|
|
|
|
|
|
sub pread ($\$;@) { |
639
|
|
|
|
|
|
|
|
640
|
|
|
|
|
|
|
# Purpose: Performs a sysread w/locking |
641
|
|
|
|
|
|
|
# Returns: Integer/undef |
642
|
|
|
|
|
|
|
# Usage: $bytes = pread($filename, $text, $length); |
643
|
|
|
|
|
|
|
# Usage: $bytes = pread($filename, $text, $length, $offset); |
644
|
|
|
|
|
|
|
|
645
|
244
|
|
|
244
|
1
|
1579
|
my $filename = shift; |
646
|
244
|
|
|
|
|
334
|
my $sref = shift; |
647
|
244
|
|
|
|
|
311
|
my $rlen = shift; |
648
|
244
|
|
|
|
|
326
|
my $offset = shift; |
649
|
244
|
|
|
|
|
430
|
my $nolock = shift; |
650
|
244
|
|
|
|
|
451
|
my ( $fh, $rv ); |
651
|
|
|
|
|
|
|
|
652
|
244
|
|
|
|
|
647
|
pdebug( 'entering w/(%s)(%s)(%s)(%s)', |
653
|
|
|
|
|
|
|
PDLEVEL2, $filename, $sref, $rlen, $offset ); |
654
|
244
|
|
|
|
|
625
|
pIn(); |
655
|
|
|
|
|
|
|
|
656
|
244
|
50
|
|
|
|
517
|
if ( defined $filename ) { |
657
|
|
|
|
|
|
|
|
658
|
|
|
|
|
|
|
# Opportunistically open a file handle if needed, |
659
|
|
|
|
|
|
|
# otherwise, just retrieve the existing file handle |
660
|
244
|
|
|
|
|
501
|
$fh = popen( $filename, O_RDONLY ); |
661
|
|
|
|
|
|
|
|
662
|
|
|
|
|
|
|
# Smoke 'em if you got'em... |
663
|
244
|
100
|
|
|
|
552
|
if ( defined $fh ) { |
664
|
241
|
50
|
66
|
|
|
751
|
if ( $nolock or pflock( $filename, LOCK_SH ) ) { |
665
|
241
|
100
|
|
|
|
678
|
$rlen = PIOBLKSIZE unless defined $rlen; |
666
|
241
|
50
|
|
|
|
470
|
$offset = 0 unless defined $offset; |
667
|
241
|
|
|
|
|
3195
|
$rv = sysread $fh, $$sref, $rlen, $offset; |
668
|
241
|
100
|
|
|
|
853
|
if ( defined $rv ) { |
669
|
239
|
|
|
|
|
806
|
pdebug( 'read %d bytes', PDLEVEL2, $rv ); |
670
|
|
|
|
|
|
|
} else { |
671
|
2
|
|
|
|
|
10
|
Paranoid::ERROR = |
672
|
|
|
|
|
|
|
pdebug( 'failed to read from file handle: %s', |
673
|
|
|
|
|
|
|
PDLEVEL1, $! ); |
674
|
|
|
|
|
|
|
} |
675
|
241
|
100
|
|
|
|
853
|
pflock( $filename, LOCK_UN ) unless $nolock; |
676
|
|
|
|
|
|
|
} |
677
|
|
|
|
|
|
|
} |
678
|
|
|
|
|
|
|
} |
679
|
|
|
|
|
|
|
|
680
|
244
|
|
|
|
|
651
|
pOut(); |
681
|
244
|
|
|
|
|
589
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
682
|
|
|
|
|
|
|
|
683
|
244
|
|
|
|
|
753
|
return $rv; |
684
|
|
|
|
|
|
|
} |
685
|
|
|
|
|
|
|
|
686
|
|
|
|
|
|
|
sub pnlread ($\$;@) { |
687
|
|
|
|
|
|
|
|
688
|
|
|
|
|
|
|
# Purpose: Wrapper for pread |
689
|
|
|
|
|
|
|
# Returns: RV of pread |
690
|
|
|
|
|
|
|
# Usage: $bytes = pnlread($filename, $text, $length); |
691
|
|
|
|
|
|
|
# Usage: $bytes = pnlread($filename, $text, $length, $offset); |
692
|
|
|
|
|
|
|
|
693
|
1
|
|
|
1
|
1
|
4
|
my $filename = shift; |
694
|
1
|
|
|
|
|
2
|
my $sref = shift; |
695
|
1
|
|
|
|
|
2
|
my $rlen = shift; |
696
|
1
|
|
|
|
|
2
|
my $offset = shift; |
697
|
|
|
|
|
|
|
|
698
|
1
|
|
|
|
|
5
|
return pread( $filename, $$sref, $rlen, $offset, 1 ); |
699
|
|
|
|
|
|
|
} |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
sub ptruncate { |
702
|
|
|
|
|
|
|
|
703
|
|
|
|
|
|
|
# Purpose: Truncates the specified file |
704
|
|
|
|
|
|
|
# Returns: RV of truncate |
705
|
|
|
|
|
|
|
# Usage: $rv = ptruncate($filename); |
706
|
|
|
|
|
|
|
# Usage: $rv = ptruncate($filename, $pos); |
707
|
|
|
|
|
|
|
|
708
|
1
|
|
|
1
|
1
|
4
|
my $filename = shift; |
709
|
1
|
|
|
|
|
4
|
my $pos = shift; |
710
|
1
|
|
|
|
|
3
|
my ( $rv, $fh, $cpos ); |
711
|
|
|
|
|
|
|
|
712
|
1
|
|
|
|
|
5
|
pdebug( 'entering w/(%s)(%s)', PDLEVEL2, $filename, $pos ); |
713
|
1
|
|
|
|
|
10
|
pIn(); |
714
|
|
|
|
|
|
|
|
715
|
1
|
50
|
|
|
|
5
|
if ( defined $filename ) { |
716
|
1
|
50
|
|
|
|
4
|
$pos = 0 unless defined $pos; |
717
|
1
|
|
|
|
|
4
|
$fh = popen( $filename, O_RDWR | O_CREAT ); |
718
|
|
|
|
|
|
|
|
719
|
|
|
|
|
|
|
# Smoke 'em if you got'em... |
720
|
1
|
50
|
|
|
|
5
|
if ( defined $fh ) { |
721
|
1
|
50
|
|
|
|
4
|
if ( pflock( $filename, LOCK_EX ) ) { |
722
|
1
|
|
|
|
|
10
|
$cpos = sysseek $fh, 0, SEEK_CUR; |
723
|
1
|
|
|
|
|
64
|
$rv = truncate $fh, $pos; |
724
|
1
|
50
|
|
|
|
6
|
if ($rv) { |
725
|
1
|
50
|
|
|
|
6
|
sysseek $fh, $pos, SEEK_SET if $cpos > $pos; |
726
|
|
|
|
|
|
|
} else { |
727
|
0
|
|
|
|
|
0
|
Paranoid::ERROR = |
728
|
|
|
|
|
|
|
pdebug( 'failed to truncate file: %s', PDLEVEL1, $! ); |
729
|
|
|
|
|
|
|
} |
730
|
1
|
|
|
|
|
3
|
pflock( $filename, LOCK_UN ); |
731
|
|
|
|
|
|
|
} |
732
|
|
|
|
|
|
|
} |
733
|
|
|
|
|
|
|
} |
734
|
|
|
|
|
|
|
|
735
|
1
|
|
|
|
|
12
|
pOut(); |
736
|
1
|
|
|
|
|
9
|
pdebug( 'leaving w/rv: %s', PDLEVEL2, $rv ); |
737
|
|
|
|
|
|
|
|
738
|
1
|
|
|
|
|
12
|
return $rv; |
739
|
|
|
|
|
|
|
} |
740
|
|
|
|
|
|
|
|
741
|
|
|
|
|
|
|
END { |
742
|
|
|
|
|
|
|
|
743
|
|
|
|
|
|
|
# Attempt to clean close all filehandles |
744
|
36
|
|
|
36
|
|
56107855
|
pcloseAll(); |
745
|
|
|
|
|
|
|
} |
746
|
|
|
|
|
|
|
|
747
|
|
|
|
|
|
|
1; |
748
|
|
|
|
|
|
|
|
749
|
|
|
|
|
|
|
__END__ |