Home | History | Annotate | Download | only in genext2fs 
      1 #!/bin/bash
      2 
      3 KERNEL=
      4 RAMDISK=
      5 CMDLINE=
      6 GENEXT2FS=
      7 GRUBCONF=
      8 TMPDIR=
      9 OUTPUT=
     10 
     11 while [ $# -gt 0 ]; do
     12     case $1 in
     13         --kernel)
     14             KERNEL=$2
     15             shift
     16             ;;
     17 
     18         --ramdisk)
     19             RAMDISK=$2
     20             shift
     21             ;;
     22 
     23         --cmdline)
     24             CMDLINE=$2
     25             shift
     26             ;;
     27 
     28         --genext2fs)
     29             GENEXT2FS=$2
     30             shift
     31             ;;
     32 
     33         --tmpdir)
     34             TMPDIR=$2
     35             shift
     36             ;;
     37         --grubconf)
     38             GRUBCONF=$2
     39             shift
     40             ;;
     41         --output)
     42             OUTPUT=$2
     43             shift
     44             ;;
     45 
     46         --help)
     47             echo "Usage: $0 OPTIONS"
     48             echo "Create an ext2 image that contains everything necessary"
     49             echo -e "to be the boot file system.\n"
     50             echo "The following options exist:"
     51             echo "  --genext2fs <genext2fs>   The location of genext2fs binary"
     52             echo "  --kernel <kernel>         The kernel to boot"
     53             echo "  --ramdisk <ramdisk>       The ramdisk to be used"
     54             echo "  --cmdline <cmdline>       The command line to use"
     55             echo "  --grubconf <confile>      The path to grub conf file"
     56             echo "  --tmpdir <tmpdir>         The temporary dir where files"\
     57                  "can be copied"
     58             echo "  --output <output>         The filename of the output image"
     59             echo
     60             exit 0
     61             ;;
     62 
     63         *)
     64             echo "Unknown option $1."
     65             exit 1
     66             ;;
     67     esac
     68     shift
     69 done
     70 
     71 if [ -z "$KERNEL" -o -z "$RAMDISK" -o -z "$GENEXT2FS" -o -z "$TMPDIR" -o \
     72      -z "$OUTPUT" ]; then
     73     echo "Missing required arguments."
     74     exit 1
     75 fi
     76 
     77 if ! [ -x "$GENEXT2FS" -a -f "$RAMDISK" -a -f "$KERNEL" ]; then
     78     echo "Must provide path to a valid genext2fs binary."
     79     exit 1
     80 fi
     81 
     82 rm -rf $TMPDIR
     83 mkdir -p $TMPDIR
     84 
     85 echo -n "$CMDLINE" > $TMPDIR/cmdline
     86 cp -f $KERNEL $TMPDIR/kernel
     87 cp -f $RAMDISK $TMPDIR/ramdisk
     88 
     89 if [ -f "$GRUBCONF" ]; then
     90     mkdir -p $TMPDIR/boot/grub
     91     cp -f $GRUBCONF $TMPDIR/boot/grub/menu.lst
     92 fi
     93 
     94 num_blocks=`du -sk $TMPDIR | tail -n1 | awk '{print $1;}'`
     95 
     96 # add 1%
     97 extra=`expr $num_blocks / 100`
     98 reserve=10
     99 [ $extra -lt $reserve ] && extra=$reserve
    100 
    101 num_blocks=`expr $num_blocks + $extra`
    102 num_inodes=`find $TMPDIR | wc -l`
    103 
    104 $GENEXT2FS -d $TMPDIR -b $num_blocks -N $num_inodes -m 0 $OUTPUT
    105 
    106 exit 0
    107