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Revision 43c735d7ce8d7bcec7b2f7d7f337ea7ea7a16674, 0.9 KB
(checked in by H. Peter Anvin <hpa@…>, 4 years ago)
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fdgeo.pl: exit values; fix division by zero
Return exit values to go with the error messages; don't divide by zero
in case of range error.
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Property mode set to
100755
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| 1 | #!/usr/bin/perl |
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| 2 | # |
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| 3 | # Try automatic generation of geometries |
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| 4 | # |
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| 5 | |
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| 6 | ($k) = @ARGV; |
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| 7 | $sec = int($k*2+0.5); |
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| 8 | |
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| 9 | if ($sec < 320*2) { |
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| 10 | $c = 40; |
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| 11 | $h = 1; |
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| 12 | $type = 1; |
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| 13 | } elsif ($sec < 640*2) { |
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| 14 | $c = 40; |
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| 15 | $h = 2; |
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| 16 | $type = 1; |
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| 17 | } elsif ($sec < 1200*2) { |
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| 18 | $c = 80; |
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| 19 | $h = 2; |
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| 20 | $type = 3; |
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| 21 | } elsif ($sec < 1440*2) { |
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| 22 | $c = 80; |
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| 23 | $h = 2; |
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| 24 | $type = 2; |
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| 25 | } elsif ($sec < 2880*2) { |
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| 26 | $c = 80; |
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| 27 | $h = 2; |
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| 28 | $type = 4; |
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| 29 | } elsif ($sec < 4096*2) { |
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| 30 | $c = 80; |
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| 31 | $h = 2; |
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| 32 | $type = 6; |
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| 33 | } else { |
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| 34 | printf "%.1fK, %d sectors: ", $sec/2, $sec; |
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| 35 | print "Considered a hard disk\n"; |
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| 36 | exit 2; |
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| 37 | } |
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| 38 | |
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| 39 | $ok = 0; |
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| 40 | while ($c < 256) { |
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| 41 | $s = int($sec/($c*$h)+0.5); |
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| 42 | if ($s <= 63 && $sec == $c*$h*$s) { |
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| 43 | $ok = 1; |
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| 44 | last; |
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| 45 | } |
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| 46 | $c++; |
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| 47 | } |
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| 48 | |
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| 49 | printf "%.1fK, %d sectors: ", $sec/2, $sec; |
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| 50 | if ($ok) { |
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| 51 | print "c=$c, h=$h, s=$s, type=$type\n"; |
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| 52 | exit 0; |
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| 53 | } else { |
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| 54 | print "No valid geometry found (MEMDISK will fake it)\n"; |
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| 55 | exit 1; |
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| 56 | } |
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