scripts/create-image.sh

   1 #!/usr/bin/env bash
   2
   3 filesystem=ext2
   4
   5 while getopts "f:i" option
   6 do
   7         case $option in
   8                 f)
   9                 filesystem=$OPTARG
  10                 ;;
  11                 i)
  12                 initramfs=1
  13                 ;;
  14                 *)
  15                 printf "Option not recognized\n"
  16                 exit 1
  17                 ;;
  18         esac
  19 done
  20 shift $(($OPTIND - 1))
  21
  22 if [ $(id -u) -ne 0 ];then
  23         printf "Installation is only possible as root\n"
  24         exit 1
  25 fi
  26
  27 printf "Checking if mkfs is installed"
  28 mkfs=$(which mkfs.$filesystem)
  29
  30 if [ ! -z $mkfs -a -x $mkfs ];then
  31         printf "...okay\n"
  32 else
  33         printf "...failed\n"
  34         exit 1
  35 fi
  36
  37 printf "Checking if parted is installed"
  38 parted=$(which parted)
  39
  40 if [ ! -z $parted -a -x $parted ];then
  41         printf "...okay\n"
  42 else
  43         printf "...failed\n"
  44         exit 1
  45 fi
  46
  47 printf "Checking if qemu-img is installed"
  48 qimg=$(which qemu-img)
  49
  50 if [ ! -z $qimg -a -x $qimg ];then
  51         printf "...okay\n"
  52 else
  53         printf "...failed\n"
  54         exit 1
  55 fi
  56
  57 if [ -z $1 ];then
  58         printf "Please give the name of the image file\n"
  59         exit 1
  60 fi
  61
  62 if [ -z $initramfs ];then
  63         if [ -z $2 ];then
  64                 printf "Please give the name of the openadk archive file\n"
  65                 exit 1
  66         fi
  67 else
  68         if [ -z $2 ];then
  69                 printf "Please give the full path prefix to kernel/initramfs\n"
  70                 exit 1
  71         fi
  72 fi
  73
  74
  75 printf "Generate qemu image (512 MB)\n"
  76 $qimg create -f raw $1 512M >/dev/null
  77
  78 printf "Creating filesystem $filesystem\n"
  79
  80 printf "Create partition and filesystem\n"
  81 $parted -s $1 mklabel msdos
  82 $parted -s $1 -- mkpart primary ext2 0 -0
  83 $parted -s $1 set 1 boot on
  84
  85 offset=$(parted $1 unit b print | tail -2 | head -1 | cut -f 1 --delimit="B" | cut -c 9-)
  86
  87 dd if=$1 of=mbr bs=$offset count=1 2>/dev/null
  88 dd if=$1 skip=$offset of=$1.new 2>/dev/null
  89
  90 if [ "$filesystem" = "ext2" -o "$filesystem" = "ext3" -o "$filesystem" = "ext4" ];then
  91         mkfsopts=-F
  92 fi
  93
  94 mkfs.$filesystem $mkfsopts ${1}.new >/dev/null
  95
  96 if [ $? -eq 0 ];then
  97         printf "Successfully created partition\n"
  98         #$parted $1 print
  99 else
 100         printf "Partition creation failed, Exiting.\n"
 101         exit 1
 102 fi
 103
 104 cat mbr ${1}.new > $1
 105 rm ${1}.new
 106 rm mbr
 107
 108 tmp=$(mktemp -d)
 109
 110 mount -o loop,offset=$offset -t $filesystem $1 $tmp
 111
 112 if [ -z $initramfs ];then
 113         printf "Extracting install archive\n"
 114         tar -C $tmp -xzpf $2
 115         printf "Fixing permissions\n"
 116         chmod 1777 $tmp/tmp
 117         chmod 4755 $tmp/bin/busybox
 118 else
 119         printf "Copying kernel/initramfs\n"
 120         mkdir $tmp/boot $tmp/dev
 121         cp $2-kernel $tmp/boot/kernel
 122         cp $2-initramfs $tmp/boot/initramfs
 123 fi
 124
 125 umount $tmp
 126 printf "Successfully installed.\n"
 127 printf "Be sure $1 is writable for the user which use qemu\n"
 128 exit 0