lldb/scripts/lldb-test-qemu/rootfs.sh

   1 #!/bin/bash
   2
   3 set -e
   4
   5 print_usage() {
   6   echo "Usage: $(basename $0) [options]"
   7   echo -e "Creates a Ubuntu root file system image.\n"
   8   echo -e "  --help\t\t\tDisplay this information."
   9   echo -e "  --arch {armhf|arm64}\t\tSelects architecture of rootfs image."
  10   echo -e "  --distro {bionic|focal}\tSelects Ubuntu distribution of rootfs image."
  11   echo -e "  --size n{K|M|G}\t\tSets size of rootfs image to n Kilo, Mega or Giga bytes."
  12   exit "$1"
  13 }
  14
  15 invalid_arg() {
  16   echo "ERROR: Unrecognized argument: $1" >&2
  17   print_usage 1
  18 }
  19
  20 update_repositories() {
  21   echo -e "\nUpdating apt repositories. "
  22   echo -e "\nPress 'y' to continue or any other key to exit..."
  23   read -s -n 1 user_input
  24   if [[ $user_input == 'Y' ]] || [[ $user_input == 'y' ]]; then
  25     sudo apt update
  26   else
  27     exit
  28   fi
  29 }
  30
  31 # Parse options
  32 while [[ $# -gt 0 ]]; do
  33   case "${END_OF_OPT}${1}" in
  34     --help)     print_usage 0 ;;
  35     --arch)     rfs_arch=$2;   shift;;
  36     --distro)   rfs_distro=$2; shift;;
  37     --size)     rfs_size=$2;   shift;;
  38     *)          invalid_arg "$1" ;;
  39   esac
  40   shift
  41 done
  42
  43 if [ -z "$rfs_arch" ]; then
  44   echo "Missing architecture"
  45   print_usage 1
  46 fi
  47 if [ -z "$rfs_distro" ]; then
  48   echo "Missing distribution"
  49   print_usage 1
  50 fi
  51 if [ -z "$rfs_size" ]; then
  52   echo "Missing size"
  53   print_usage 1
  54 fi
  55
  56 if [[ "$rfs_arch" != "arm64" && "$rfs_arch" != "armhf" ]]; then
  57   echo "Invalid architecture: $rfs_arch"
  58   print_usage 1
  59 fi
  60
  61 pat='^[0-9]+[K|M|G]$'
  62 if [[ ! $rfs_size =~ $pat ]]; then
  63   echo "Invalid size: $rfs_size"
  64   print_usage 1
  65 fi
  66
  67 update_repositories
  68
  69 echo "Installing build dependencies ..."
  70 sudo apt-get install debootstrap qemu-user-static schroot qemu-utils
  71
  72 image_name=$rfs_distro-$rfs_arch-"rootfs"
  73 echo "Creating $rfs_distro ($rfs_arch) root file system ..."
  74 echo "Image name: $image_name.img"
  75 echo "Image size: $rfs_size"
  76
  77 qemu-img create $image_name.img $rfs_size
  78
  79 mkfs.ext4 $image_name.img
  80 mkdir $image_name.dir
  81 sudo mount -o loop $image_name.img $image_name.dir
  82
  83 sudo qemu-debootstrap --arch $rfs_arch $rfs_distro $image_name.dir
  84
  85 sudo chroot $image_name.dir locale-gen en_US.UTF-8
  86
  87 sudo chroot $image_name.dir sed -i \
  88 's/main/main restricted multiverse universe/g' /etc/apt/sources.list
  89
  90 sudo chroot $image_name.dir sed -i '$ a\nameserver 8.8.8.8' /etc/resolv.conf
  91
  92 sudo chroot $image_name.dir apt update
  93 sudo chroot $image_name.dir apt -y install ssh bash-completion
  94 sudo chroot $image_name.dir adduser --gecos "" $USER
  95 sudo chroot $image_name.dir adduser $USER sudo
  96 sudo umount $image_name.dir
  97 rmdir $image_name.dir