1#include <semaphore.h>
 2#include <limits.h>
 3#include <errno.h>
 4
 5int sem_init(sem_t *sem, int pshared, unsigned value)
 6{
 7	if (value > SEM_VALUE_MAX) {
 8		errno = EINVAL;
 9		return -1;
10	}
11	sem->__val[0] = value;
12	sem->__val[1] = 0;
13	sem->__val[2] = pshared ? 0 : 128;
14	return 0;
15}