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 #include <sys/proc.h> 34 #include <sys/timespec.h> 35 36 typedef uint64_t timerfd_t; 37 38 /* Creation flags. */ 39 #define TFD_NONBLOCK O_NONBLOCK 40 #define TFD_CLOEXEC O_CLOEXEC 41 42 /* Timer flags. */ 43 #define TFD_TIMER_ABSTIME 0x01 44 #define TFD_TIMER_CANCEL_ON_SET 0x02 45 46 #ifndef _KERNEL 47 48 __BEGIN_DECLS 49 int timerfd_create(int clockid, int flags); 50 int timerfd_gettime(int fd, struct itimerspec *curr_value); 51 int timerfd_settime(int fd, int flags, const struct itimerspec *new_value, 52 struct itimerspec *old_value); 53 __END_DECLS 54 55 #else /* _KERNEL */ 56 57 int kern_timerfd_create(struct thread *td, int clockid, int flags); 58 int kern_timerfd_gettime(struct thread *td, int fd, 59 struct itimerspec *curr_value); 60 int kern_timerfd_settime(struct thread *td, int fd, int flags, 61 const struct itimerspec *new_value, struct itimerspec *old_value); 62 void timerfd_jumped(void); 63 64 #endif /* !_KERNEL */ 65 66 #endif /* !_SYS_TIMERFD_H_ */ 67