1 files changed, 54 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/mbr/checksize.pl b/contrib/syslinux-4.02/mbr/checksize.pl
new file mode 100755
index 0000000..4b42327
--- /dev/null
+++ b/contrib/syslinux-4.02/mbr/checksize.pl
@@ -0,0 +1,54 @@
+## -----------------------------------------------------------------------
+##
+##   Copyright 2007-2009 H. Peter Anvin - All Rights Reserved
+##   Copyright 2009 Intel Corporation; author: H. Peter Anvin
+##
+##   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.
+##
+## -----------------------------------------------------------------------
+
+##
+## checksize.pl
+##
+## Check the size of a binary file and pad it with zeroes to that size
+##
+
+use bytes;
+
+($file, $maxsize, $padsize) = @ARGV;
+
+if (!defined($maxsize)) {
+    # Defaults based on the filename
+    if ($file =~ /^mbr[^0-9a-z]/) {
+	$maxsize = $padsize = 440;
+    } elsif ($file =~ /^gptmbr[^0-9a-z]/) {
+	$maxsize = $padsize = 440;
+    } elsif ($file =~ /^isohdp[fp]x[^0-9a-z]/) {
+	$maxsize = $padsize = 432;
+    } elsif ($file =~ /^altmbr[^0-9a-z]/) {
+	$maxsize = $padsize = 439;
+    } else {
+	die "$0: no default size for filename: $file\n";
+    }
+}
+
+$padsize = $maxsize unless(defined($padsize));
+
+open(FILE, '+<', $file) or die;
+@st = stat(FILE);
+if (!defined($size = $st[7])) {
+    die "$0: $file: $!\n";
+}
+if ($size > $maxsize) {
+    print STDERR "$file: too big ($size > $maxsize)\n";
+    exit 1;
+} elsif ($size < $padsize) {
+    seek(FILE, $size, 0);
+    print FILE "\0" x ($padsize-$size);
+}
+
+exit 0;