20 lines
363 B
Perl
20 lines
363 B
Perl
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#!/usr/bin/perl
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open(SIG, $ARGV[0]) || die "open $ARGV[0]: $!";
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$n = sysread(SIG, $buf, 1000);
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if($n > 510){
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print STDERR "boot block too large: $n bytes (max 510)\n";
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exit 1;
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}
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print STDERR "boot block is $n bytes (max 510)\n";
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$buf .= "\0" x (510-$n);
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$buf .= "\x55\xAA";
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open(SIG, ">$ARGV[0]") || die "open >$ARGV[0]: $!";
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print SIG $buf;
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close SIG;
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