1.\" Copyright (c) 2001 Alexander Langer 2.\" 3.\" All rights reserved. 4.\" 5.\" This program is free software. 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 DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/share/man/man9/SYSCALL_MODULE.9,v 1.2.2.2 2001/12/17 11:30:18 ru Exp $ 28.\" 29.Dd April 27, 2001 30.Dt SYSCALL_MODULE 9 31.Os 32.Sh NAME 33.Nm SYSCALL_MODULE 34.Nd syscall kernel module declaration macro 35.Sh SYNOPSIS 36.In sys/proc.h 37.In sys/module.h 38.In sys/sysent.h 39.Fn SYSCALL_MODULE name "int *offset" "struct sysent new_sysent" "modeventhand_t evh" "void *arg" 40.Sh DESCRIPTION 41The 42.Fn SYSCALL_MODULE 43macro declares a new syscall. 44.Fn SYSCALL_MODULE 45expands into a kernel module declaration named as 46.Fa name . 47.Pp 48.Fa offset 49is a pointer to an 50.Vt int 51which saves the offset in 52.Vt "struct sysent" 53where the 54syscall is allocated. 55.Pp 56.Fa new_sysent 57specifies the function implementing the syscall and the number of 58arguments this function needs (see 59.In sys/sysent.h ) . 60.Pp 61.Fa evh 62is a pointer to the kernel module event handler function with the argument 63.Fa arg . 64Please refer to 65.Xr module 9 66for more information. 67.Sh EXAMPLES 68A minimal example for a syscall module can be found in 69.Pa /usr/share/examples/kld/syscall/module/syscall.c . 70.Sh SEE ALSO 71.Xr module 9 72.Pp 73.Pa /usr/share/examples/kld/syscall/module/syscall.c 74.Sh AUTHORS 75This manual page was written by 76.An Alexander Langer Aq Mt alex@FreeBSD.org . 77