#define MP_IOCTL_POLL (0x100 | 1)// These values are compatible with Linux, which are in turn// compatible with iBCS2 spec.#define MP_IOCTL_POLL_RD (0x0001)#define MP_IOCTL_POLL_WR (0x0004)#define MP_IOCTL_POLL_ERR (0x0008)#define MP_IOCTL_POLL_HUP (0x0010)