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#!/usr/bin/perl
#
# list_NULf.pl -- sample Perl 5 script to list lsof NUL-terminated
# full field output (i.e., -F0 output)
#
# This script has been tested under perl version 5.001e.
#
# Copyright 1994 Purdue Research Foundation, West Lafayette, Indiana
# 47907. All rights reserved.
#
# Written by Victor A. Abell
#
# This software is not subject to any license of the American Telephone
# and Telegraph Company or the Regents of the University of California.
#
# Permission is granted to anyone to use this software for any purpose on
# any computer system, and to alter it and redistribute it freely, subject
# to the following restrictions:
#
# 1. Neither the authors nor Purdue University are responsible for any
# consequences of the use of this software.
#
# 2. The origin of this software must not be misrepresented, either by
# explicit claim or by omission. Credit to the authors and Purdue
# University must appear in documentation and sources.
#
# 3. Altered versions must be plainly marked as such, and must not be
# misrepresented as being the original software.
#
# 4. This notice may not be removed or altered.
# Initialize variables.
$fhdr = 0; # fd hdr. flag
$fdst = 0; # fd state
$access = $devch = $devn = $fd = $inode = $lock = $name = ""; # | file descr.
$offset = $proto = $size = $state = $stream = $type = ""; # | variables
$pidst = 0; # process state
$cmd = $login = $pgrp = $pid = $ppid = $uid = ""; # process var.
# Process the ``lsof -F'' output a line at a time, gathering
# the variables for a process together before printing them;
# then gathering the variables for each file descriptor
# together before printing them.
while (<>) {
chop;
@F = split('\0', $_, 999);
if ($F[0] =~ /^p/) {
# A process set begins with a PID field whose ID character is `p'.
if ($pidst) { &list_proc }
if ($fdst) { &list_fd; $fdst = 0; }
foreach $i (0 .. ($#F - 1)) {
PROC: {
if ($F[$i] =~ /^c(.*)/) { $cmd = $1; last PROC }
if ($F[$i] =~ /^g(.*)/) { $pgrp = $1; last PROC }
if ($F[$i] =~ /^p(.*)/) { $pid = $1; last PROC }
if ($F[$i] =~ /^u(.*)/) { $uid = $1; last PROC }
if ($F[$i] =~ /^L(.*)/) { $login = $1; last PROC }
if ($F[$i] =~ /^R(.*)/) { $ppid = $1; last PROC }
print "ERROR: unrecognized process field: \"$F[$i]\"\n";
}
}
$pidst = 1;
next;
}
# A file descriptor set begins with a file descriptor field whose ID
# character is `f'.
if ($F[0] =~ /^f/) {
if ($pidst) { &list_proc }
if ($fdst) { &list_fd }
foreach $i (0 .. ($#F - 1)) {
FD: {
if ($F[$i] =~ /^a(.*)/) { $access = $1; last FD; }
if ($F[$i] =~ /^C(.*)/) { last FD; }
if ($F[$i] =~ /^f(.*)/) { $fd = $1; last FD; }
if ($F[$i] =~ /^F(.*)/) { last FD; }
if ($F[$i] =~ /^d(.*)/) { $devch = $1; last FD; }
if ($F[$i] =~ /^D(.*)/) { $devn = $1; last FD; }
if ($F[$i] =~ /^G(.*)/) { last FD; }
if ($F[$i] =~ /^i(.*)/) { $inode = $1; last FD; }
if ($F[$i] =~ /^k(.*)/) { last FD; }
if ($F[$i] =~ /^l(.*)/) { $lock = $1; last FD; }
if ($F[$i] =~ /^N(.*)/) { last FD; }
if ($F[$i] =~ /^o(.*)/) { $offset = $1; last FD; }
if ($F[$i] =~ /^P(.*)/) { $proto = $1; last FD; }
if ($F[$i] =~ /^s(.*)/) { $size = $1; last FD; }
if ($F[$i] =~ /^S(.*)/) { $stream = $1; last FD; }
if ($F[$i] =~ /^t(.*)/) { $type = $1; last FD; }
if ($F[$i] =~ /^T(.*)/) {
if ($state eq "") { $state = "(" . $1; }
else { $state = $state . " " . $1; }
last FD;
}
if ($F[$i] =~ /^n(.*)/) { $name = $1; last FD; }
print "ERROR: unrecognized file set field: \"$F[$i]\"\n";
}
}
$fdst = 1;
next;
}
print "ERROR: unrecognized: \"$_\"\n";
}
# Flush any stored file or process output.
if ($fdst) { &list_fd }
if ($pidst) { &list_proc }
exit(0);
## list_fd -- list file descriptor information
# Values are stored inelegantly in global variables.
sub list_fd {
if ( ! $fhdr) {
# Print header once.
print " FD TYPE DEVICE SIZE/OFF INODE NAME\n";
$fhdr = 1;
}
printf " %4s%1.1s%1.1s %4.4s", $fd, $access, $lock, $type;
$tmp = $devn; if ($devch ne "") { $tmp = $devch }
printf " %10.10s", $tmp;
$tmp = $size; if ($offset ne "") { $tmp = $offset }
printf " %10.10s", $tmp;
$tmp = $inode; if ($proto ne "") { $tmp = $proto }
printf " %10.10s", $tmp;
$tmp = $stream; if ($name ne "") { $tmp = $name }
print " ", $tmp;
if ($state ne "") { printf " %s)\n", $state; } else { print "\n"; }
# Clear variables.
$access = $devch = $devn = $fd = $inode = $lock = "";
$name = $offset = $proto = $size = $state = $stream = $type = "";
}
# list_proc -- list process information
# Values are stored inelegantly in global variables.
sub list_proc {
print "COMMAND PID PGRP PPID USER\n";
$tmp = $uid; if ($login ne "") {$tmp = $login }
printf "%-9.9s %6d %6d %6d %s\n", $cmd, $pid, $pgrp, $ppid, $tmp;
# Clear variables.
$cmd = $login = $pgrp = $pid = $uid = "";
$fhdr = $pidst = 0;
}