1 /* $NetBSD: event.h,v 1.4 2023/07/29 11:58:53 rin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999,2000,2001 Jonathan Lemon <jlemon@FreeBSD.org> 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/sys/event.h,v 1.12 2001/02/24 01:44:03 jlemon Exp $ 29 */ 30 31 #ifndef _COMPAT_SYS_EVENT_H_ 32 #define _COMPAT_SYS_EVENT_H_ 33 34 #include <sys/cdefs.h> 35 struct timespec; 36 37 #ifdef _KERNEL 38 #include <lib/libkern/libkern.h> 39 #else 40 #include <string.h> 41 #endif 42 43 struct kevent100 { 44 uintptr_t ident; /* identifier for this event */ 45 uint32_t filter; /* filter for event */ 46 uint32_t flags; /* action flags for kqueue */ 47 uint32_t fflags; /* filter flag value */ 48 int64_t data; /* filter data value */ 49 void *udata; /* opaque user data identifier */ 50 }; 51 52 static __inline void 53 kevent100_to_kevent(const struct kevent100 *kev100, struct kevent *kev) 54 { 55 memset(kev, 0, sizeof(*kev)); 56 memcpy(kev, kev100, sizeof(*kev100)); 57 } 58 59 static __inline void 60 kevent_to_kevent100(const struct kevent *kev, struct kevent100 *kev100) 61 { 62 memcpy(kev100, kev, sizeof(*kev100)); 63 } 64 65 #ifdef _KERNEL 66 static __inline int 67 compat_100___kevent50_fetch_changes(void *ctx, const struct kevent *changelist, 68 struct kevent *changes, size_t index, int n) 69 { 70 int error, i; 71 struct kevent100 *buf; 72 const size_t buf_size = sizeof(*buf) * n; 73 const struct kevent100 *changelist100 = (const struct kevent100 *)changelist; 74 75 KASSERT(n >= 0); 76 77 buf = kmem_alloc(buf_size, KM_SLEEP); 78 79 error = copyin(changelist100 + index, buf, buf_size); 80 if (error != 0) 81 goto leave; 82 83 for (i = 0; i < n; i++) 84 kevent100_to_kevent(buf + i, changes + i); 85 86 leave: 87 kmem_free(buf, buf_size); 88 return error; 89 } 90 91 static __inline int 92 compat_100___kevent50_put_events(void *ctx, struct kevent *events, 93 struct kevent *eventlist, size_t index, int n) 94 { 95 int error, i; 96 struct kevent100 *buf; 97 const size_t buf_size = sizeof(*buf) * n; 98 struct kevent100 *eventlist100 = (struct kevent100 *)eventlist; 99 100 KASSERT(n >= 0); 101 102 buf = kmem_alloc(buf_size, KM_SLEEP); 103 104 for (i = 0; i < n; i++) 105 kevent_to_kevent100(events + i, buf + i); 106 107 error = copyout(buf, eventlist100 + index, buf_size); 108 109 kmem_free(buf, buf_size); 110 return error; 111 } 112 #endif /* _KERNEL */ 113 114 __BEGIN_DECLS 115 int kevent(int, const struct kevent100 *, size_t, struct kevent100 *, 116 size_t, const struct timespec50 *); 117 int __kevent50(int, const struct kevent100 *, size_t, struct kevent100 *, 118 size_t, const struct timespec *); 119 int __kevent100(int, const struct kevent *, size_t, struct kevent *, 120 size_t, const struct timespec *); 121 __END_DECLS 122 123 #endif /* !_COMPAT_SYS_EVENT_H_ */ 124