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46 lines
1.6 KiB
Perl
Executable File
46 lines
1.6 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# A program to make a netbootable image from a LRP firewall floppy
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# Tested on a Coyote Linux floppy
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#
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@cfg = `mtype a:syslinux.cfg`;
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unless (defined(@cfg)) {
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print "Cannot find syslinux.cfg on floppy\n";
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exit 1;
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}
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($append) = grep(/^append/, @cfg); # find the append= line
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chomp($append); # remove trailing newline
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$append =~ s/append=//; # remove the append= at beginning
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@args = split(/ /, $append); # split into arguments at whitespace
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($root) = grep(/^initrd=/, @args); # find the initrd= argument
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$root =~ s/^initrd=//; # remove the initrd= at beginning
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($lrp) = grep(/^LRP=/, @args); # find the LRP= argument
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$lrp =~ s/^LRP=//; # remove the LRP= at beginning
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@lrp = split(/,/, $lrp); # split into filenames at ,
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unshift(@lrp, $root); # prepend the root LRP filename
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$append = '';
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foreach $i (@args) { # rebuild the append string
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next if ($i =~ /^initrd=/); # minus the unneeded parameters
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next if ($i =~ /^LRP=/);
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next if ($i =~ /^boot=/);
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$append .= "$i ";
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}
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# print "$append\n";
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$tempdir = "/tmp/lrp$$";
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mkdir($tempdir, 0777) or die "$tempdir: $!\n";
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chdir($tempdir) or die "$tempdir: $!\n";
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foreach $i (@lrp) {
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$i .= '.lrp' if $i !~ /\.lrp$/;
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print "Unpacking $i\n";
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system("mtype a:$i | tar zxvf -");
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}
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print "Repacking to /tmp/lrp.lrp\n";
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system("tar zcf /tmp/lrp.lrp *");
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chdir('/tmp') or die "/tmp: $!\n";
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system("rm -fr $tempdir");
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print "Extracting kernel image from floppy\n";
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system("mtype a:linux > /tmp/lrp.ker");
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print "Creating netboot image in /tmp/lrp.nb\n";
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system("mkelf-linux --append='$append' --output=/tmp/lrp.nb /tmp/lrp.ker /tmp/lrp.lrp");
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exit 0;
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