mount: if unmount failed, do not proceed

src/scripts/addmount.sh

@@ -27,9 +27,13 @@ mount_filename=$(systemd-escape -p --suffix=mount "$where")
 mount_file="/etc/systemd/system/${mount_filename}"
 
 # cleanup any previous mount of same name (after midway box crash?)
-if systemctl -q is-active mnt-volumes-ext4data.mount; then
+if systemctl -q is-active "${mount_filename}"; then
     echo "Previous mount active, unmounting"
-    systemctl stop "${mount_filename}" || true
+    # unmounting can fail if a user is cd'ed into the directory. if we go ahead and mount anyway, systemd says "active" because it's referring to the previous mount config
+    if ! systemctl stop "${mount_filename}"; then
+        echo "Failed to unmount"
+        exit 2
+    fi
 fi
 
 echo "$mount_file_contents" > "${mount_file}"
@@ -38,7 +42,7 @@ systemctl daemon-reload
 
 if ! timeout "${timeout}" systemctl enable --now "${mount_filename}"; then
     echo "Failed to mount"
-    exit 1
+    exit 3
 fi
 
 echo "Mount succeeded"