1 /* $NetBSD: hook.h,v 1.1 2021/09/30 01:26:07 yamaguchi Exp $ */ 2 3 /* 4 * Copyright (c) 2021 Internet Initiative Japan Inc. 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS_HOOK_H_ 30 #define _SYS_HOOK_H_ 31 32 #include <sys/mutex.h> 33 34 #define HOOKNAMSIZ 128 35 36 struct khook_list; 37 struct hook_desc; 38 39 typedef struct khook_list khook_list_t; 40 typedef struct hook_desc khook_t; 41 42 khook_list_t *simplehook_create(int, const char *); 43 void simplehook_destroy(khook_list_t *); 44 int simplehook_dohooks(khook_list_t *); 45 46 khook_t *simplehook_establish(khook_list_t *, 47 void (*)(void *), void *); 48 void simplehook_disestablish(khook_list_t *, 49 khook_t *, kmutex_t *); 50 bool simplehook_has_hooks(khook_list_t *); 51 52 #endif /* !_SYS_HOOK_H_ */ 53