#include <errno.h>
#include <pthread.h>

int pthread_mutex_trylock(pthread_mutex_t *mut)
{
	kern_futex_t expected = 0;
	if (__atomic_compare_exchange_n(
		    &mut->__v,
		    &expected,
		    1,
		    0,
		    __ATOMIC_ACQUIRE,
		    __ATOMIC_ACQUIRE)) {
		return 0;
	}

	return __set_errno(EBUSY);
}