1 files changed, 16 insertions, 1 deletions
diff --git a/functions.sh b/functions.sh
index e94a42c..f64fb97 100644
--- a/functions.sh
+++ b/functions.sh
@@ -1,11 +1,16 @@
+# This file contains utility functions used by rpi2-gen-image.sh
+
 cleanup (){
-  # Clean up all temporary mount points
   set +x
   set +e
+
+  # Identify and kill all processes still using files
   echo "killing processes using mount point ..."
   fuser -k $R
   sleep 3
   fuser -9 -k -v $R
+
+  # Clean up all temporary mount points
   echo "removing temporary mount points ..."
   umount -l $R/proc 2> /dev/null
   umount -l $R/sys 2> /dev/null
@@ -21,3 +26,13 @@ chroot_exec() {
   # Exec command in chroot
   LANG=C LC_ALL=C DEBIAN_FRONTEND=noninteractive chroot $R $*
 }
+
+install_readonly() {
+  # Install file with user read-only permissions
+  install -o root -g root -m 644 $*
+}
+
+install_exec() {
+  # Install file with root exec permissions
+  install -o root -g root -m 744 $*
+}