include: posix: Add <sys/select.h> header for POSIX subsystem

/*

 * Copyright (c) 2019 Linaro Limited

 *

 * SPDX-License-Identifier: Apache-2.0

 */

#ifndef ZEPHYR_INCLUDE_POSIX_SYS_SELECT_H_

#define ZEPHYR_INCLUDE_POSIX_SYS_SELECT_H_

#include <net/socket_select.h>

#include <sys/_timeval.h>

#define fd_set zsock_fd_set

#define FD_SETSIZE ZSOCK_FD_SETSIZE

#define FD_ZERO ZSOCK_FD_ZERO

#define FD_SET ZSOCK_FD_SET

#define FD_CLR ZSOCK_FD_CLR

#define FD_ISSET ZSOCK_FD_ISSET

struct timeval;

static inline int select(int nfds, fd_set *readfds,

			 fd_set *writefds, fd_set *exceptfds,

			 struct timeval *timeout)

{

	return zsock_select(nfds, readfds, writefds, exceptfds,

			    (struct zsock_timeval *)timeout);

}

#endif /* ZEPHYR_INCLUDE_POSIX_SYS_SELECT_H_ */