src/util/gensdsk

   1 #!/bin/bash
   2 #
   3 # Generate a syslinux floppy that loads a gPXE image
   4 #
   5 # gensdsk foo.sdsk foo.lkrn
   6 #
   7 # the floppy image is the first argument
   8 #   followed by list of .lkrn images
   9 #
  10
  11 case $# in
  12 0|1)
  13         echo Usage: $0 foo.sdsk foo.lkrn ...
  14         exit 1
  15         ;;
  16 esac
  17 case "`mtools -V`" in
  18 Mtools\ version\ 3.9.9*|Mtools\ version\ 3.9.1[0-9]*|[mM]tools\ *\ [4-9].*)
  19         ;;
  20 *)
  21         echo Mtools version 3.9.9 or later is required
  22         exit 1
  23         ;;
  24 esac
  25 img=$1
  26 shift
  27 dir=`mktemp -d bin/sdsk.dir.XXXXXX`
  28
  29 mformat -f 1440 -C -i $img ::
  30 cfg=$dir/syslinux.cfg
  31 cat > $cfg <<EOF
  32
  33 # These default options can be changed in the gensdsk script
  34 TIMEOUT 30
  35 EOF
  36 first=
  37 for f
  38 do
  39         if [ ! -r $f ]
  40         then
  41                 echo $f does not exist, skipping 1>&2
  42                 continue
  43         fi
  44         # shorten name for 8.3 filesystem
  45         b=$(basename $f)
  46         g=${b%.lkrn}
  47         g=${g//[^a-z0-9]}
  48         g=${g:0:8}.krn
  49         case "$first" in
  50         "")
  51                 echo DEFAULT $g
  52                 ;;
  53         esac
  54         first=$g
  55         echo LABEL $b
  56         echo "" KERNEL $g
  57         mcopy -m -i $img $f ::$g
  58 done >> $cfg
  59 mcopy -i $img $cfg ::syslinux.cfg
  60 if ! syslinux $img
  61 then
  62         exit 1
  63 fi
  64
  65 rm -fr $dir