-const char* mount_state_to_string(MountState i);
-MountState mount_state_from_string(const char *s);
+const char* mount_state_to_string(MountState i) _const_;
+MountState mount_state_from_string(const char *s) _pure_;
+
+const char* mount_exec_command_to_string(MountExecCommand i) _const_;
+MountExecCommand mount_exec_command_from_string(const char *s) _pure_;