OrionLibC

#include <sys/syscall.h>
#include <sys/ioctl.h>
#include <errno.h>

/* Send an I/O Control request to a file descriptor */
int
ioctl(int fd, unsigned long request, ...)
{
	int ret;
	asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_IOCTL),
	             "c" (3), "S" (&fd));

	if (ret >= 0)
		return ret;
	errno = -ret;
	return -1;
}