ext4_utils/mkuserimg_mke2fs.sh

   1 #!/bin/bash
   2 #
   3 # To call this script, make sure mke2fs 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 ] [-M RSV_PCT] [-e ERASE_BLOCK_SIZE] [-o FLASH_BLOCK_SIZE]
  12              [-U MKE2FS_UUID] [-S MKE2FS_HASH_SEED] [-c] [FILE_CONTEXTS]
  13 EOT
  14 }
  15
  16 BLOCKSIZE=4096
  17
  18 MKE2FS_OPTS=""
  19 MKE2FS_EXTENDED_OPTS=""
  20 E2FSDROID_OPTS=""
  21 E2FSPROGS_FAKE_TIME=""
  22
  23 if [ "$1" = "-s" ]; then
  24   MKE2FS_EXTENDED_OPTS+="android_sparse"
  25   shift
  26 else
  27   E2FSDROID_OPTS+="-e"
  28 fi
  29
  30 if [ $# -lt 5 ]; then
  31   usage
  32   exit 1
  33 fi
  34
  35 SRC_DIR=$1
  36 if [ ! -d $SRC_DIR ]; then
  37   echo "Can not find directory $SRC_DIR!"
  38   exit 2
  39 fi
  40
  41 OUTPUT_FILE=$2
  42 EXT_VARIANT=$3
  43 MOUNT_POINT=$4
  44 SIZE=$5
  45 shift; shift; shift; shift; shift
  46
  47 if [ "$1" = "-j" ]; then
  48   if [ "$2" = "0" ]; then
  49     MKE2FS_OPTS+="-O ^has_journal"
  50   else
  51     MKE2FS_OPTS+="-J size=$2"
  52   fi
  53   shift; shift
  54 fi
  55
  56 if [[ "$1" == "-T" ]]; then
  57   E2FSDROID_OPTS+=" -T $2"
  58   E2FSPROGS_FAKE_TIME=$2
  59   shift; shift
  60 fi
  61
  62 if [[ "$1" == "-C" ]]; then
  63   E2FSDROID_OPTS+=" -C $2"
  64   shift; shift
  65 fi
  66
  67 if [[ "$1" == "-D" ]]; then
  68   E2FSDROID_OPTS+=" -p $2"
  69   shift; shift
  70 fi
  71
  72 if [[ "$1" == "-B" ]]; then
  73   E2FSDROID_OPTS+=" -B $2"
  74   shift; shift
  75 fi
  76
  77 if [[ "$1" == "-d" ]]; then
  78   E2FSDROID_OPTS+=" -d $2"
  79   shift; shift
  80 fi
  81
  82 if [[ "$1" == "-A" ]]; then
  83   E2FSDROID_OPTS+=" -D $2"
  84   shift; shift
  85 fi
  86
  87 if [[ "$1" == "-L" ]]; then
  88   MKE2FS_OPTS+=" -L $2"
  89   shift; shift
  90 fi
  91
  92 if [[ "$1" == "-i" ]]; then
  93   MKE2FS_OPTS+=" -N $2"
  94   shift; shift
  95 fi
  96
  97 if [[ "$1" == "-M" ]]; then
  98   MKE2FS_OPTS+=" -m $2"
  99   shift; shift
 100 fi
 101
 102 if [[ "$1" == "-e" ]]; then
 103   if [[ $MKE2FS_EXTENDED_OPTS ]]; then
 104     MKE2FS_EXTENDED_OPTS+=","
 105   fi
 106   MKE2FS_EXTENDED_OPTS+="stripe_width=$(($2/BLOCKSIZE))"
 107   shift; shift
 108 fi
 109
 110 if [[ "$1" == "-o" ]]; then
 111   if [[ $MKE2FS_EXTENDED_OPTS ]]; then
 112     MKE2FS_EXTENDED_OPTS+=","
 113   fi
 114   # stride should be the max of 8kb and the logical block size
 115   MKE2FS_EXTENDED_OPTS+="stride=$((($2 > 8192 ? $2 : 8192) / BLOCKSIZE))"
 116   shift; shift
 117 fi
 118
 119 if [[ "$1" == "-U" ]]; then
 120   MKE2FS_OPTS+=" -U $2"
 121   shift; shift
 122 fi
 123
 124 if [[ "$1" == "-S" ]]; then
 125   if [[ $MKE2FS_EXTENDED_OPTS ]]; then
 126     MKE2FS_EXTENDED_OPTS+=","
 127   fi
 128   MKE2FS_EXTENDED_OPTS+="hash_seed=$2"
 129   shift; shift
 130 fi
 131
 132 if [[ "$1" == "-c" ]]; then
 133   E2FSDROID_OPTS+=" -s"
 134   shift;
 135 fi
 136
 137 if [[ $MKE2FS_EXTENDED_OPTS ]]; then
 138   MKE2FS_OPTS+=" -E $MKE2FS_EXTENDED_OPTS"
 139 fi
 140
 141 if [[ $1 ]]; then
 142   E2FSDROID_OPTS+=" -S $1"
 143 fi
 144
 145 case $EXT_VARIANT in
 146   ext2) ;;
 147   ext4) ;;
 148   *) echo "Only ext2/4 are supported!"; exit 3 ;;
 149 esac
 150
 151 if [ -z $MOUNT_POINT ]; then
 152   echo "Mount point is required"
 153   exit 2
 154 fi
 155
 156 if [[ ${MOUNT_POINT:0:1} != "/" ]]; then
 157   MOUNT_POINT="/"$MOUNT_POINT
 158 fi
 159
 160 if [ -z $SIZE ]; then
 161   echo "Need size of filesystem"
 162   exit 2
 163 elif [ 0 -eq 0$SIZE ]; then
 164   s=$(du -sm $SRC_DIR | cut -f1)
 165   SIZE=$(($s / 10 + $s))M
 166 fi
 167
 168 # Round down the filesystem length to be a multiple of the block size
 169 SIZE=$((SIZE / BLOCKSIZE))
 170
 171 # truncate output file since mke2fs will keep verity section in existing file
 172 cat /dev/null >$OUTPUT_FILE
 173
 174 MAKE_EXT4FS_ENV="MKE2FS_CONFIG=./system/extras/ext4_utils/mke2fs.conf"
 175 if [[ $E2FSPROGS_FAKE_TIME ]]; then
 176   MAKE_EXT4FS_ENV+=" E2FSPROGS_FAKE_TIME=$E2FSPROGS_FAKE_TIME"
 177 fi
 178
 179 MAKE_EXT4FS_CMD="mke2fs $MKE2FS_OPTS -t $EXT_VARIANT -b $BLOCKSIZE $OUTPUT_FILE $SIZE"
 180 echo $MAKE_EXT4FS_ENV $MAKE_EXT4FS_CMD
 181 env $MAKE_EXT4FS_ENV $MAKE_EXT4FS_CMD
 182 if [ $? -ne 0 ]; then
 183   exit 4
 184 fi
 185
 186 if [[ $E2FSPROGS_FAKE_TIME ]]; then
 187   E2FSDROID_ENV="E2FSPROGS_FAKE_TIME=$E2FSPROGS_FAKE_TIME"
 188 fi
 189
 190 E2FSDROID_CMD="e2fsdroid $E2FSDROID_OPTS -f $SRC_DIR -a $MOUNT_POINT $OUTPUT_FILE"
 191 echo $E2FSDROID_ENV $E2FSDROID_CMD
 192 env $E2FSDROID_ENV $E2FSDROID_CMD
 193 if [ $? -ne 0 ]; then
 194   rm -f $OUTPUT_FILE
 195   exit 4
 196 fi