85 lines
2.8 KiB
Groff
85 lines
2.8 KiB
Groff
.\" -*- nroff -*-
|
|
.\"
|
|
.\" Copyright (c) 2001 Alexander Langer
|
|
.\"
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This program is free software.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 24, 2015
|
|
.Dt SYSCALL_MODULE 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm SYSCALL_MODULE
|
|
.Nd syscall kernel module declaration macro
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In sys/kernel.h
|
|
.In sys/proc.h
|
|
.In sys/module.h
|
|
.In sys/sysent.h
|
|
.Fn SYSCALL_MODULE name "int *offset" "struct sysent *new_sysent" "modeventhand_t evh" "void *arg"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn SYSCALL_MODULE
|
|
macro declares a new syscall.
|
|
.Fn SYSCALL_MODULE
|
|
expands into a kernel module declaration with name
|
|
.Ql sys/ Ns Fa name .
|
|
.Pp
|
|
The rest of the arguments expected by this macro are:
|
|
.Bl -tag -width ".Fa new_sysent"
|
|
.It Fa offset
|
|
A pointer to an
|
|
.Vt int
|
|
which saves the offset in
|
|
.Vt "struct sysent"
|
|
where the syscall is allocated.
|
|
.It Fa new_sysent
|
|
is a pointer to a structure that specifies the function implementing
|
|
the syscall and the number of arguments this function needs (see
|
|
.In sys/sysent.h ) .
|
|
.It Fa evh
|
|
A pointer to the kernel module event handler function with the argument
|
|
.Fa arg .
|
|
Please refer to
|
|
.Xr module 9
|
|
for more information.
|
|
.It Fa arg
|
|
The argument passed to the callback functions of the
|
|
.Fa evh
|
|
event handler when it is called.
|
|
.El
|
|
.Sh EXAMPLES
|
|
A minimal example for a syscall module can be found in
|
|
.Pa /usr/share/examples/kld/syscall/module/syscall.c .
|
|
.Sh SEE ALSO
|
|
.Xr module 9
|
|
.Pp
|
|
.Pa /usr/share/examples/kld/syscall/module/syscall.c
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Alexander Langer Aq Mt alex@FreeBSD.org .
|