# h3droid_installer (c) 2017 KotCzarny (meet me on #linux-sunxi @ irc.freenode.com)

# note: OUTDEV can't contain spaces!
if [ "x$OUTDEV" = "x" ]; then
 # check for required tools
 ERR=""; for TMP in bash truncate sfdisk mkdosfs mke2fs mkfs.ext4 losetup blockdev xz;
 do if [ -z `which $TMP` ]; then ERR+=" $TMP"; fi; done
 if [ ! -z "$ERR" ]; then echo "please install missing tools:$ERR"; exit 1; fi

 # either define OUTDEV in your script or add it here:
 OUTDEV=/dev/sdb1
#OUTDEV_SIZE=1000M; OUTDEV=/home/somefile.img

#OUTDEV=/media/root/0000-006F

 # file.img example: make sure target path has ~500MB of free space and supports sparse files
 # otherwise make sure it has OUTDEV_SIZE of free space
 # OUTDEV_SIZE=xxxM; OUTDEV=/some/path/to/output/file.img
 # ---- start of file.img example block ----
 if [ "0" = "1" ]; then
  OUTDEV_SIZE=3700M; OUTDEV=./h3droid.img
  modprobe loop; TMP=`losetup -j "$OUTDEV"|tail -1|cut -d " " -f 1|tr -d ':'`
  if [ ! -z "$TMP" ]; then losetup -d "$TMP"; rm "$OUTDEV"; fi
  echo "creating $OUTDEV_SIZE big file. if your filesystem doesnt support sparse files it might take long time.."
  truncate -s "$OUTDEV_SIZE" "$OUTDEV"; TMP=`losetup -fP --show "$OUTDEV"`;
  if [ "x$TMP" != "x" ]; then echo "loop mounted: $OUTDEV => $TMP"; OUTDEV0=$OUTDEV; OUTDEV="$TMP";
  else echo "initializing loop device failed"; exit 1; fi
 fi
 # ---- end of file.img example block ----

 if [ "x$OUTDEV" = "x" ]; then echo "please configure OUTDEV in 00_conf"; exit 1; fi
 echo "target device: $OUTDEV"
 mkdir 2>/dev/null fs_tmp
fi