lunaix-os/scripts/mkrootfs

   1 #!/usr/bin/env bash
   2
   3 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
   4 WS=$(realpath $SCRIPT_DIR/..)
   5 USR="${WS}/usr/build"
   6
   7 fs="ext2"
   8 rootfs="${WS}/lunaix_rootfs.${fs}"
   9 size_mb=16
  10
  11 if [ ! -d "${USR}" ]; then
  12     echo "build the user target first!"
  13     exit 1
  14 fi
  15
  16 prefix=""
  17 if [ ! "$EUID" -eq 0 ]; then
  18     echo "==================="
  19     echo "   mkrootfs require root privilege to manipulate disk image"
  20     echo "   you maybe prompted for password"
  21     echo "==================="
  22     echo
  23     prefix="sudo"
  24 fi
  25
  26 tmp_mnt="$(mktemp -d)"
  27
  28 function cleanup() {
  29     echo "an error occured, reverting..."
  30
  31     for arg in "$@"
  32     do
  33         case "$arg" in
  34             "tmpmnt")
  35                 echo "revert: ${tmp_mnt}"
  36                 ${prefix} rm -rf "${tmp_mnt}"
  37             ;;
  38             "img")
  39                 echo "revert: ${rootfs}"
  40                 rm -f "${rootfs}"
  41             ;;
  42             "mnt")
  43                 echo "${prefix} rm umount ${tmp_mnt}"
  44             ;;
  45         esac
  46     done
  47
  48     exit 1
  49 }
  50
  51 dd if=/dev/zero of="${rootfs}" count=${size_mb} bs=1M \
  52     || cleanup tmpmnt
  53
  54 mkfs.${fs} -L lunaix-rootfs -r 0 "${rootfs}" \
  55     || cleanup tmpmnt img
  56
  57 ${prefix} mount -o loop "${rootfs}" "${tmp_mnt}" \
  58     || cleanup tmpmnt img
  59
  60 ${prefix} chmod -R o+rwx ${tmp_mnt} \
  61     || cleanup tmpmnt img
  62
  63
  64 cd "${tmp_mnt}" || cleanup tmpmnt img
  65
  66 ${prefix} ${SCRIPT_DIR}/mkrootfs-layout ${tmp_mnt} ${USR}
  67
  68 has_err=$?
  69 if [ "$has_err" -eq 2 ]; then
  70     cleanup mnt tmpmnt img
  71 fi
  72
  73 sync -f .
  74
  75 cd "${WS}" || cleanup
  76
  77 ${prefix} umount "${tmp_mnt}" || cleanup
  78
  79 ${prefix} rm -d "${tmp_mnt}" || cleanup
  80
  81 ${prefix} chmod o+rw ${rootfs} || cleanup
  82
  83 if [ ! "${has_err:-0}" -eq 0  ]; then
  84     echo "done, but with error."
  85 else
  86     echo "done"
  87 fi
  88
  89 exit 0