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/* $NetBSD: timerfd.h,v 1.3 2021/09/21 13:51:46 ryoon Exp $ */
/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*/
#ifndef _SYS_TIMERFD_H_
#define _SYS_TIMERFD_H_
#include <sys/fcntl.h>
#include <sys/ioccom.h>
#include <sys/time.h>
/*
* Definitions for timerfd_create(2) / timerfd_gettime(2) / timerfd_settime(2).
* This implementation is API compatible with the Linux interface.
*/
#define TFD_TIMER_ABSTIME O_WRONLY
#define TFD_TIMER_CANCEL_ON_SET O_RDWR
#define TFD_CLOEXEC O_CLOEXEC
#define TFD_NONBLOCK O_NONBLOCK
#define TFD_IOC_SET_TICKS _IOW('T', 0, uint64_t)
#ifdef _KERNEL
struct lwp;
int do_timerfd_create(struct lwp *, clockid_t, int, register_t *);
int do_timerfd_gettime(struct lwp *, int, struct itimerspec *,
register_t *);
int do_timerfd_settime(struct lwp *, int, int, const struct itimerspec *,
struct itimerspec *, register_t *);
#else /* ! _KERNEL */
__BEGIN_DECLS
int timerfd_create(clockid_t, int);
int timerfd_gettime(int, struct itimerspec *);
int timerfd_settime(int, int, const struct itimerspec *,
struct itimerspec *);
__END_DECLS
#endif /* _KERNEL */
#endif /* _SYS_TIMERFD_H_ */
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