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## -----------------------------------------------------------------------
##
## Copyright 2011 Gene Cumm
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, Inc., 53 Temple Place Ste 330,
## Boston MA 02111-1307, USA; either version 2 of the License, or
## (at your option) any later version; incorporated herein by reference.
##
## -----------------------------------------------------------------------
##
## mk-lba-img.pl
##
## Make an image where each sector contains the LBA of the sector with
## a head of an input file.
##
# use bytes;
use constant SECTOR_SIZE => 512;
use constant LBA_SIZE => 8;
use constant LONG_SIZE => 4;
use constant NUM_SECTORS => (256*63+1);
# use constant NUM_SECTORS => 5;
use constant DEBUG => 1;
# sub dprint
# {
# if (DEBUG) {
# print($_);
# }
# }
($ifilen, $ofilen) = @ARGV;
if ((!defined($ifilen)) || ($ifilen eq "-")) { #
print(STDERR "Using stdin\n");
$IFILE = STDIN;
} else {
open($IFILE, '<', $ifilen) or die "open:$!";
print(STDERR "Using $ifilen\n");
}
binmode($ifile);
if (!defined($ofilen)) {
$OFILE = STDOUT;
} else {
open($OFILE, '>', $ofilen) or die "open:$!";
print(STDERR "Using $ofilen\n");
}
binmode($OFILE);
# $pk0 = pack('L', 0);
$n_long = (SECTOR_SIZE/LONG_SIZE);
$n_lba = (SECTOR_SIZE/LBA_SIZE);
$len=0;
while ( read($IFILE, $ch, 1) ) {
print($OFILE $ch);
$len++;
}
$tail = (SECTOR_SIZE - ($len % SECTOR_SIZE)) % SECTOR_SIZE;
$ch = pack("C", 0);
print("Len: $len\ttail: $tail\n");
for ($i=0; $i<$tail; $i++) {
print($OFILE $ch);
}
$st = ($len + $tail) / SECTOR_SIZE;
for ($i=$st; $i<(NUM_SECTORS); $i++) {
@ia = ();
for ($j=0; $j< $n_lba; $j++) {
push(@ia, $i, 0);
}
@ipk = pack("L[$n_long]", @ia);
# There is a 64-bit INT conversion but it normally isn't usable
# on a 32-bit platform
print($OFILE @ipk); # Gently simulate a 64-bit LBA
}
if (defined($ifilen) && (!($ifilen eq "-"))) {
close($IFILE);
}
if (defined($ofilen)) {
close($OFILE);
}
exit 0;
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