ref: a8079f496c4c0438c761e1afdf2e05b7617b75c5
dir: /sys/src/ape/lib/ap/arm64/_seek.c/
extern long __SEEK(long long*, int, long long, int);
long long
_SEEK(int fd, long long o, int p)
{
	long long l;
	if(__SEEK(&l, fd, o, p) < 0)
		l = -1;
	return l;
}