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      1 /*	$NetBSD: epoll.c,v 1.1 2023/07/28 18:19:00 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2023 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #include <sys/cdefs.h>
     29 __RCSID("$NetBSD: epoll.c,v 1.1 2023/07/28 18:19:00 christos Exp $");
     30 
     31 #include <sys/epoll.h>
     32 #include <sys/sigtypes.h>
     33 #include <sys/time.h>
     34 
     35 #include <errno.h>
     36 #include <stddef.h>
     37 
     38 int
     39 epoll_create(int size)
     40 {
     41 	if (size <= 0) {
     42 		errno = EINVAL;
     43 		return -1;
     44 	}
     45 
     46 	return epoll_create1(0);
     47 }
     48 
     49 int
     50 epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout)
     51 {
     52 	return epoll_pwait(epfd, events, maxevents, timeout, NULL);
     53 }
     54 
     55 int
     56 epoll_pwait(int epfd, struct epoll_event *events, int maxevents, int timeout,
     57     const sigset_t *sigmask)
     58 {
     59 	struct timespec ts, *tsp;
     60 
     61 	if (timeout >= 0) {
     62 		ts.tv_sec = timeout / 1000;
     63 		ts.tv_nsec = (timeout % 1000) * 1000000;
     64 		tsp = &ts;
     65 	} else
     66 		tsp = NULL;
     67 
     68 	return epoll_pwait2(epfd, events, maxevents, tsp, sigmask);
     69 }
     70