manager_serialize 1020 src/core/main.c         r = manager_serialize(m, f, fds, switching_root);
manager_serialize 2485 src/core/manager.c         r = manager_serialize(m, f, fds, false);
manager_serialize  334 src/core/manager.h int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root);