Rename driver command functions

driver/src/driver.sh

@@ -321,8 +321,9 @@ deleteMapping() {
     popd > /dev/null
 }
 
-# Program entrypoint that is called by Kubernetes to attach and mount a disk.
-domount() {
+# Program part that is performed when the program is called by Kubernetes to
+# attach and mount a disk.
+mountAction() {
     debug "domount $@"
     local mountPoint=$1
     local options=$2
@@ -388,7 +389,9 @@ domount() {
     exit 0
 }
 
-unmount() {
+# Program part that is performed when the program is called by Kubernetes to
+# unmount and detach a disk.
+unmountAction() {
     debug "unmount $@"
     local mountPoint=$1
 
@@ -435,22 +438,19 @@ unmount() {
 
 # This is the command Kubernetes wants us to perform.
 op=$1
-
-if [[ "$op" = "init" ]]
-then
-    debug "init $@"
-    echo "{\"status\":\"Success\",\"capabilities\":{\"attach\":false}}" >&1
-    exit 0
-fi
-
 shift
 
 case "$op" in
+    init)
+        debug "init"
+        echo "{\"status\":\"Success\",\"capabilities\":{\"attach\":false}}" >&1
+        exit 0
+        ;;
     mount)
-        domount $*
+        mountAction $*
         ;;
     unmount)
-        unmount $*
+        unmountAction $*
         ;;
     *)
         debug "not supported: $op $*"