1 /* $NetBSD: syscallvar.h,v 1.5 2009/06/02 23:21:38 pooka Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software developed for The NetBSD Foundation 8 * by Andrew Doran. 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_SYSCALLVAR_H_ 33 #define _SYS_SYSCALLVAR_H_ 34 35 #ifndef _KERNEL 36 #error nothing of interest to userspace here 37 #endif 38 39 #include <sys/systm.h> 40 #include <sys/proc.h> 41 42 extern struct emul emul_netbsd; 43 44 struct syscall_package { 45 u_short sp_code; 46 u_short sp_flags; 47 sy_call_t *sp_call; 48 }; 49 50 void syscall_init(void); 51 int syscall_establish(const struct emul *, const struct syscall_package *); 52 int syscall_disestablish(const struct emul *, const struct syscall_package *); 53 54 static inline int 55 sy_call(const struct sysent *sy, struct lwp *l, const void *uap, 56 register_t *rval) 57 { 58 int error; 59 60 l->l_sysent = sy; 61 error = (*sy->sy_call)(l, uap, rval); 62 l->l_sysent = NULL; 63 64 return error; 65 } 66 67 /* inclusion in the kernel currently depends on SYSCALL_DEBUG */ 68 extern const char * const syscallnames[]; 69 70 #endif /* _SYS_SYSCALLVAR_H_ */ 71