1 #include <sys/types.h>
2 #include <sys/signal.h>
3 
4 unsigned
sleep(unsigned secs)5 sleep(unsigned secs) {
6 	extern time_t time (time_t *);
7 	time_t t = time(0);
8 
9 	_alarm(secs);
10 	_pause();
11 	return (time(0) - t);
12 }
13