ref: 11b5c4b8bf0a15777e9a7f2292f6c80f5a7b4a2d dir: /sys/src/ape/lib/bsd/shutdown.c/
#include <sys/types.h> #include <unistd.h> int shutdown(int fd, int how) { if(how == 2) close(fd); return 0; }