utils/aosp: Refactor code to display status message and remove chmod call

Now directories are owned by aosp user, there is not need to explicitly
chmod to 777. Current user will create and own the folder.

utils/aosp

@@ -19,15 +19,30 @@ AOSP_VOL_AOSP=${AOSP_VOL_AOSP%/} # Trim trailing slash if needed
 AOSP_VOL_CCACHE=${AOSP_VOL_CCACHE:-$AOSP_VOL/ccache}
 AOSP_VOL_CCACHE=${AOSP_VOL_CCACHE%/} # Trim trailing slash if needed
 
-if [ ! -d "$AOSP_VOL_AOSP" -o ! -d "$AOSP_VOL_CCACHE" ]; then
-    sudo mkdir -p $AOSP_VOL_AOSP $AOSP_VOL_CCACHE
-    sudo chmod 777 $AOSP_VOL_AOSP $AOSP_VOL_CCACHE
-fi
+# Convenience function
+function aosp_create_dir_if_needed {
+  directory=$1
+  msg="Checking if $directory exists"
+  echo "$msg"
+  if [ ! -d "$directory" ]; then
+    echo "$msg - unexistent"
+    msg="Creating $directory"
+    echo "$msg"
+    mkdir -p $directory
+  fi
+  echo "$msg - ok"
+}
+
+# Create AOSP_VOL_AOSP
+aosp_create_dir_if_needed $AOSP_VOL_AOSP
+aosp_create_dir_if_needed $AOSP_VOL_CCACHE
 
 if [ -n "$SSH_AUTH_SOCK" ]; then
     SSH_AUTH_ARGS="-v $SSH_AUTH_SOCK:/tmp/ssh_auth -e SSH_AUTH_SOCK=/tmp/ssh_auth"
 fi
 
+echo ""
+
 docker run $AOSP_ARGS $SSH_AUTH_ARGS $AOSP_EXTRA_ARGS \
     -v "$AOSP_VOL_AOSP:/aosp" -v "$AOSP_VOL_CCACHE:/tmp/ccache" \
     $AOSP_IMAGE $@