void mount_fd_event(Manager *m, int events);
int mount_path_is_mounted(Manager *m, const char* path);
-int mount_add_node_links(Unit *m, const char *what);
-int mount_add_path_links(Unit *m, const char *where, bool requires);
const char* mount_state_to_string(MountState i);
MountState mount_state_from_string(const char *s);