squashfs_utils/mksquashfsimage.sh

   1 #!/bin/bash
   2 #
   3 # To call this script, make sure mksquashfs is somewhere in PATH
   4
   5 function usage() {
   6 cat<<EOT
   7 Usage:
   8 ${0##*/} SRC_DIR OUTPUT_FILE [-m MOUNT_POINT] [-c FILE_CONTEXTS] [-b BLOCK_SIZE] [-z COMPRESSOR] [-zo COMPRESSOR_OPT]
   9 EOT
  10 }
  11
  12 echo "in mksquashfsimage.sh PATH=$PATH"
  13
  14 if [ $# -lt 2 ]; then
  15     usage
  16     exit 1
  17 fi
  18
  19 SRC_DIR=$1
  20 if [ ! -d $SRC_DIR ]; then
  21   echo "Can not find directory $SRC_DIR!"
  22   exit 2
  23 fi
  24 OUTPUT_FILE=$2
  25 shift; shift
  26
  27 MOUNT_POINT=
  28 if [[ "$1" == "-m" ]]; then
  29     MOUNT_POINT=$2
  30     shift; shift
  31 fi
  32
  33 FILE_CONTEXTS=
  34 if [[ "$1" == "-c" ]]; then
  35     FILE_CONTEXTS=$2
  36     shift; shift
  37 fi
  38
  39 BLOCK_SIZE=131072
  40 if [[ "$1" == "-b" ]]; then
  41     BLOCK_SIZE=$2
  42     shift; shift
  43 fi
  44
  45 COMPRESSOR="lz4"
  46 COMPRESSOR_OPT="-Xhc"
  47 if [[ "$1" == "-z" ]]; then
  48     COMPRESSOR=$2
  49     COMPRESSOR_OPT=
  50     shift; shift
  51 fi
  52
  53 if [[ "$1" == "-zo" ]]; then
  54     COMPRESSOR_OPT=$2
  55     shift; shift
  56 fi
  57
  58 OPT=""
  59 if [ -n "$MOUNT_POINT" ]; then
  60   OPT="$OPT -mount-point $MOUNT_POINT"
  61 fi
  62 if [ -n "$FILE_CONTEXTS" ]; then
  63   OPT="$OPT -context-file $FILE_CONTEXTS"
  64 fi
  65 if [ -n "$BLOCK_SIZE" ]; then
  66   OPT="$OPT -b $BLOCK_SIZE"
  67 fi
  68
  69 MAKE_SQUASHFS_CMD="mksquashfs $SRC_DIR $OUTPUT_FILE -no-progress -comp $COMPRESSOR $COMPRESSOR_OPT -no-exports -noappend -no-recovery -android-fs-config $OPT"
  70 echo $MAKE_SQUASHFS_CMD
  71 $MAKE_SQUASHFS_CMD
  72 if [ $? -ne 0 ]; then
  73     exit 4
  74 fi