1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2023 Jake Freeland <jfree@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef _SYS_TIMERFD_H_
29#define _SYS_TIMERFD_H_
30
31#include <sys/types.h>
32#include <sys/fcntl.h>
33/*
34 * We only need <sys/timespec.h>, but glibc pollutes the namespace
35 * with <time.h>. This pollution is expected by most programs, so
36 * reproduce it by including <sys/time.h> here.
37 */
38#include <sys/time.h>
39
40typedef uint64_t timerfd_t;
41
42/* Creation flags. */
43#define TFD_NONBLOCK O_NONBLOCK
44#define TFD_CLOEXEC O_CLOEXEC
45
46/* Timer flags. */
47#define TFD_TIMER_ABSTIME 0x01
48#define TFD_TIMER_CANCEL_ON_SET 0x02
49
50#ifndef _KERNEL
51
52__BEGIN_DECLS
53int timerfd_create(int clockid, int flags);
54int timerfd_gettime(int fd, struct itimerspec *curr_value);
55int timerfd_settime(int fd, int flags, const struct itimerspec *new_value,
56 struct itimerspec *old_value);
57__END_DECLS
58
59#else /* _KERNEL */
60
61void timerfd_jumped(void);
62
63#endif /* !_KERNEL */
64
65#endif /* !_SYS_TIMERFD_H_ */