115 lines
3.3 KiB
Groff
115 lines
3.3 KiB
Groff
.\" -*- nroff -*-
|
|
.\"
|
|
.\" Copyright (c) 2000 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 6, 2005
|
|
.Dt DECLARE_MODULE 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm DECLARE_MODULE
|
|
.Nd kernel module declaration macro
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In sys/kernel.h
|
|
.In sys/module.h
|
|
.Fn DECLARE_MODULE "name" "moduledata_t data" "sub" "order"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn DECLARE_MODULE
|
|
macro declares a generic kernel module.
|
|
It is used to register the module with the system, using the
|
|
.Fn SYSINIT
|
|
macro.
|
|
.Fn DECLARE_MODULE
|
|
is usually used within other macros, such as
|
|
.Xr DRIVER_MODULE 9 ,
|
|
.Xr DEV_MODULE 9
|
|
and
|
|
.Xr SYSCALL_MODULE 9 .
|
|
Of course, it can also be called directly, for example in
|
|
order to implement dynamic sysctls.
|
|
.Pp
|
|
The arguments to
|
|
.Fn DECLARE_MODULE
|
|
expects are:
|
|
.Bl -tag -width indent
|
|
.It Fa name
|
|
The module name, which will be used in the
|
|
.Fn SYSINIT
|
|
call to identify the module.
|
|
.It Fa data
|
|
A
|
|
.Vt moduledata_t
|
|
structure, which contains two main items, the official name of the
|
|
module name, which will be used in the
|
|
.Vt module_t
|
|
structure and a pointer to the event handler function of type
|
|
.Vt modeventhand_t .
|
|
.It Fa sub
|
|
An argument directed to the
|
|
.Fn SYSINIT
|
|
macro.
|
|
Valid values for this are contained in the
|
|
.Vt sysinit_sub_id
|
|
enumeration
|
|
(see
|
|
.In sys/kernel.h )
|
|
and specify the type of system startup interfaces.
|
|
The
|
|
.Xr DRIVER_MODULE 9
|
|
macro uses a value of
|
|
.Dv SI_SUB_DRIVERS
|
|
here for example, since these modules contain a driver for a device.
|
|
For kernel modules that are loaded at runtime, a value of
|
|
.Dv SI_SUB_EXEC
|
|
is common.
|
|
.It Fa order
|
|
An argument for
|
|
.Fn SYSINIT .
|
|
It represents the KLDs order of initialization within the subsystem.
|
|
Valid values are defined in the
|
|
.Vt sysinit_elem_order
|
|
enumeration
|
|
.Pq In sys/kernel.h .
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr DEV_MODULE 9 ,
|
|
.Xr DRIVER_MODULE 9 ,
|
|
.Xr module 9 ,
|
|
.Xr SYSCALL_MODULE 9
|
|
.Pp
|
|
.Pa /usr/include/sys/kernel.h ,
|
|
.Pa /usr/share/examples/kld
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
This manual page was written by
|
|
.An Alexander Langer Aq alex@FreeBSD.org ,
|
|
inspired by the KLD Facility Programming Tutorial by
|
|
.An Andrew Reiter Aq arr@watson.org .
|