mkuserimg.sh

   1 #!/bin/bash
   2 #
   3 # To call this script, make sure make_ext4fs is somewhere in PATH
   4
   5 function usage() {
   6 cat<<EOT
   7 Usage:
   8 mkuserimg.sh [-s] SRC_DIR OUTPUT_FILE EXT_VARIANT MOUNT_POINT SIZE [-j <journal_size>]
   9              [-T TIMESTAMP] [-C FS_CONFIG] [-B BLOCK_LIST_FILE] [-L LABEL] [FILE_CONTEXTS]
  10 EOT
  11 }
  12
  13 ENABLE_SPARSE_IMAGE=
  14 if [ "$1" = "-s" ]; then
  15   ENABLE_SPARSE_IMAGE="-s"
  16   shift
  17 fi
  18
  19 if [ $# -lt 5 ]; then
  20   usage
  21   exit 1
  22 fi
  23
  24 SRC_DIR=$1
  25 if [ ! -d $SRC_DIR ]; then
  26   echo "Can not find directory $SRC_DIR!"
  27   exit 2
  28 fi
  29
  30 OUTPUT_FILE=$2
  31 EXT_VARIANT=$3
  32 MOUNT_POINT=$4
  33 SIZE=$5
  34 shift; shift; shift; shift; shift
  35
  36 JOURNAL_FLAGS=
  37 if [ "$1" = "-j" ]; then
  38   if [ "$2" = "0" ]; then
  39     JOURNAL_FLAGS="-J"
  40   else
  41     JOURNAL_FLAGS="-j $2"
  42   fi
  43   shift; shift
  44 fi
  45
  46 TIMESTAMP=-1
  47 if [[ "$1" == "-T" ]]; then
  48   TIMESTAMP=$2
  49   shift; shift
  50 fi
  51
  52 FS_CONFIG=
  53 if [[ "$1" == "-C" ]]; then
  54   FS_CONFIG=$2
  55   shift; shift
  56 fi
  57
  58 BLOCK_LIST=
  59 if [[ "$1" == "-B" ]]; then
  60   BLOCK_LIST=$2
  61   shift; shift
  62 fi
  63
  64 LABEL=
  65 if [[ "$1" == "-L" ]]; then
  66   LABEL=$2
  67   shift; shift
  68 fi
  69
  70 FC=$1
  71
  72 case $EXT_VARIANT in
  73   ext4) ;;
  74   *) echo "Only ext4 is supported!"; exit 3 ;;
  75 esac
  76
  77 if [ -z $MOUNT_POINT ]; then
  78   echo "Mount point is required"
  79   exit 2
  80 fi
  81
  82 if [ -z $SIZE ]; then
  83   echo "Need size of filesystem"
  84   exit 2
  85 fi
  86
  87 OPT=""
  88 if [ -n "$FC" ]; then
  89   OPT="$OPT -S $FC"
  90 fi
  91 if [ -n "$FS_CONFIG" ]; then
  92   OPT="$OPT -C $FS_CONFIG"
  93 fi
  94 if [ -n "$BLOCK_LIST" ]; then
  95   OPT="$OPT -B $BLOCK_LIST"
  96 fi
  97 if [ -n "$LABEL" ]; then
  98   OPT="$OPT -L $LABEL"
  99 fi
 100
 101 MAKE_EXT4FS_CMD="make_ext4fs $ENABLE_SPARSE_IMAGE -T $TIMESTAMP $OPT -l $SIZE $JOURNAL_FLAGS -a $MOUNT_POINT $OUTPUT_FILE $SRC_DIR"
 102 echo $MAKE_EXT4FS_CMD
 103 $MAKE_EXT4FS_CMD
 104 if [ $? -ne 0 ]; then
 105   exit 4
 106 fi