1 /* $NetBSD: timerfd.h,v 1.3 2021/09/21 13:51:46 ryoon Exp $ */ 2 3 /*- 4 * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _SYS_TIMERFD_H_ 33 #define _SYS_TIMERFD_H_ 34 35 #include <sys/fcntl.h> 36 #include <sys/ioccom.h> 37 #include <sys/time.h> 38 39 /* 40 * Definitions for timerfd_create(2) / timerfd_gettime(2) / timerfd_settime(2). 41 * This implementation is API compatible with the Linux interface. 42 */ 43 44 #define TFD_TIMER_ABSTIME O_WRONLY 45 #define TFD_TIMER_CANCEL_ON_SET O_RDWR 46 #define TFD_CLOEXEC O_CLOEXEC 47 #define TFD_NONBLOCK O_NONBLOCK 48 49 #define TFD_IOC_SET_TICKS _IOW('T', 0, uint64_t) 50 51 #ifdef _KERNEL 52 struct lwp; 53 int do_timerfd_create(struct lwp *, clockid_t, int, register_t *); 54 int do_timerfd_gettime(struct lwp *, int, struct itimerspec *, 55 register_t *); 56 int do_timerfd_settime(struct lwp *, int, int, const struct itimerspec *, 57 struct itimerspec *, register_t *); 58 #else /* ! _KERNEL */ 59 __BEGIN_DECLS 60 int timerfd_create(clockid_t, int); 61 int timerfd_gettime(int, struct itimerspec *); 62 int timerfd_settime(int, int, const struct itimerspec *, 63 struct itimerspec *); 64 __END_DECLS 65 #endif /* _KERNEL */ 66 67 #endif /* _SYS_TIMERFD_H_ */ 68