1 ## ----------------------------------------------------------------------- 2 ## 3 ## Copyright 2007-2009 H. Peter Anvin - All Rights Reserved 4 ## Copyright 2009 Intel Corporation; author: H. Peter Anvin 5 ## 6 ## This program is free software; you can redistribute it and/or modify 7 ## it under the terms of the GNU General Public License as published by 8 ## the Free Software Foundation, Inc., 53 Temple Place Ste 330, 9 ## Boston MA 02111-1307, USA; either version 2 of the License, or 10 ## (at your option) any later version; incorporated herein by reference. 11 ## 12 ## ----------------------------------------------------------------------- 13 14 ## 15 ## checksize.pl 16 ## 17 ## Check the size of a binary file and pad it with zeroes to that size 18 ## 19 20 use bytes; 21 22 ($file, $maxsize, $padsize) = @ARGV; 23 24 if (!defined($maxsize)) { 25 # Defaults based on the filename 26 if ($file =~ /^mbr[^0-9a-z]/) { 27 $maxsize = $padsize = 440; 28 } elsif ($file =~ /^gptmbr[^0-9a-z]/) { 29 $maxsize = $padsize = 440; 30 } elsif ($file =~ /^isohdp[fp]x[^0-9a-z]/) { 31 $maxsize = $padsize = 432; 32 } elsif ($file =~ /^altmbr[^0-9a-z]/) { 33 $maxsize = $padsize = 439; 34 } else { 35 die "$0: no default size for filename: $file\n"; 36 } 37 } 38 39 $padsize = $maxsize unless(defined($padsize)); 40 41 open(FILE, '+<', $file) or die; 42 @st = stat(FILE); 43 if (!defined($size = $st[7])) { 44 die "$0: $file: $!\n"; 45 } 46 if ($size > $maxsize) { 47 print STDERR "$file: too big ($size > $maxsize)\n"; 48 exit 1; 49 } elsif ($size < $padsize) { 50 seek(FILE, $size, 0); 51 print FILE "\0" x ($padsize-$size); 52 } 53 54 exit 0; 55
