ext4_utils/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] [-D PRODUCT_OUT] [-B BLOCK_LIST_FILE]
  10              [-d BASE_ALLOC_FILE_IN ] [-A BASE_ALLOC_FILE_OUT ] [-L LABEL]
  11              [-i INODES ] [FILE_CONTEXTS]
  12 EOT
  13 }
  14
  15 ENABLE_SPARSE_IMAGE=
  16 if [ "$1" = "-s" ]; then
  17   ENABLE_SPARSE_IMAGE="-s"
  18   shift
  19 fi
  20
  21 if [ $# -lt 5 ]; then
  22   usage
  23   exit 1
  24 fi
  25
  26 SRC_DIR=$1
  27 if [ ! -d $SRC_DIR ]; then
  28   echo "Can not find directory $SRC_DIR!"
  29   exit 2
  30 fi
  31
  32 OUTPUT_FILE=$2
  33 EXT_VARIANT=$3
  34 MOUNT_POINT=$4
  35 SIZE=$5
  36 shift; shift; shift; shift; shift
  37
  38 JOURNAL_FLAGS=
  39 if [ "$1" = "-j" ]; then
  40   if [ "$2" = "0" ]; then
  41     JOURNAL_FLAGS="-J"
  42   else
  43     JOURNAL_FLAGS="-j $2"
  44   fi
  45   shift; shift
  46 fi
  47
  48 TIMESTAMP=-1
  49 if [[ "$1" == "-T" ]]; then
  50   TIMESTAMP=$2
  51   shift; shift
  52 fi
  53
  54 FS_CONFIG=
  55 if [[ "$1" == "-C" ]]; then
  56   FS_CONFIG=$2
  57   shift; shift
  58 fi
  59
  60 PRODUCT_OUT=
  61 if [[ "$1" == "-D" ]]; then
  62   PRODUCT_OUT=$2
  63   shift; shift
  64 fi
  65
  66 BLOCK_LIST=
  67 if [[ "$1" == "-B" ]]; then
  68   BLOCK_LIST=$2
  69   shift; shift
  70 fi
  71
  72 BASE_ALLOC_FILE_IN=
  73 if [[ "$1" == "-d" ]]; then
  74   BASE_ALLOC_FILE_IN=$2
  75   shift; shift
  76 fi
  77
  78 BASE_ALLOC_FILE_OUT=
  79 if [[ "$1" == "-A" ]]; then
  80   BASE_ALLOC_FILE_OUT=$2
  81   shift; shift
  82 fi
  83
  84 LABEL=
  85 if [[ "$1" == "-L" ]]; then
  86   LABEL=$2
  87   shift; shift
  88 fi
  89
  90 INODES=
  91 if [[ "$1" == "-i" ]]; then
  92   INODES=$2
  93   shift; shift
  94 fi
  95 FC=$1
  96
  97 case $EXT_VARIANT in
  98   ext4) ;;
  99   *) echo "Only ext4 is supported!"; exit 3 ;;
 100 esac
 101
 102 if [ -z $MOUNT_POINT ]; then
 103   echo "Mount point is required"
 104   exit 2
 105 fi
 106
 107 if [ -z $SIZE ]; then
 108   echo "Need size of filesystem"
 109   exit 2
 110 elif [ 0 -eq 0$SIZE ]; then
 111   s=$(du -sm $SRC_DIR | cut -f1)
 112   SIZE=$(($s / 10 + $s))M
 113 fi
 114
 115 OPT=""
 116 if [ -n "$FC" ]; then
 117   OPT="$OPT -S $FC"
 118 fi
 119 if [ -n "$FS_CONFIG" ]; then
 120   OPT="$OPT -C $FS_CONFIG"
 121 fi
 122 if [ -n "$BLOCK_LIST" ]; then
 123   OPT="$OPT -B $BLOCK_LIST"
 124 fi
 125 if [ -n "$BASE_ALLOC_FILE_IN" ]; then
 126   OPT="$OPT -d $BASE_ALLOC_FILE_IN"
 127 fi
 128 if [ -n "$BASE_ALLOC_FILE_OUT" ]; then
 129   OPT="$OPT -D $BASE_ALLOC_FILE_OUT"
 130 fi
 131 if [ -n "$LABEL" ]; then
 132   OPT="$OPT -L $LABEL"
 133 fi
 134 if [ -n "$INODES" ]; then
 135   OPT="$OPT -i $INODES"
 136 fi
 137
 138 MAKE_EXT4FS_CMD="make_ext4fs $ENABLE_SPARSE_IMAGE -T $TIMESTAMP $OPT -l $SIZE $JOURNAL_FLAGS -a $MOUNT_POINT $OUTPUT_FILE $SRC_DIR $PRODUCT_OUT"
 139 echo $MAKE_EXT4FS_CMD
 140 $MAKE_EXT4FS_CMD
 141 if [ $? -ne 0 ]; then
 142   exit 4
 143 fi