xref: /src/lib/libc/sys/epoll.c

/*	$NetBSD: epoll.c,v 1.1 2023/07/28 18:19:00 christos Exp $	*/

/*-
 * Copyright (c) 2023 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include <sys/cdefs.h>
__RCSID("$NetBSD: epoll.c,v 1.1 2023/07/28 18:19:00 christos Exp $");

#include <sys/epoll.h>
#include <sys/sigtypes.h>
#include <sys/time.h>

#include <errno.h>
#include <stddef.h>

int
epoll_create(int size)
{
	if (size <= 0) {
		errno = EINVAL;
		return -1;
	}

	return epoll_create1(0);
}

int
epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout)
{
	return epoll_pwait(epfd, events, maxevents, timeout, NULL);
}

int
epoll_pwait(int epfd, struct epoll_event *events, int maxevents, int timeout,
    const sigset_t *sigmask)
{
	struct timespec ts, *tsp;

	if (timeout >= 0) {
		ts.tv_sec = timeout / 1000;
		ts.tv_nsec = (timeout % 1000) * 1000000;
		tsp = &ts;
	} else
		tsp = NULL;

	return epoll_pwait2(epfd, events, maxevents, tsp, sigmask);
}