close_unless_reserved  370 process.c          ret = close_unless_reserved(fd);
close_unless_reserved  388 process.c          ret = close_unless_reserved(fd);
close_unless_reserved  398 process.c      #define redirect_close(fd) close_unless_reserved(fd)
close_unless_reserved  400 process.c      #define parent_redirect_close(fd) close_unless_reserved(fd)