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81 lines
2.6 KiB
Groff
81 lines
2.6 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" Copyright (c) 2001 Alexander Langer
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 11, 2005
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.Dt MODULE_DEPEND 9
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.Os
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.Sh NAME
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.Nm MODULE_DEPEND
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.Nd set kernel module dependencies
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.Sh SYNOPSIS
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.In sys/param.h
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.In sys/module.h
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.Fn MODULE_DEPEND "name" "moddepend" "int minversion" "int prefversion" "int maxversion"
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.Sh DESCRIPTION
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The
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.Fn MODULE_DEPEND
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macro sets a dependency on another kernel module with name
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.Fa moddepend ,
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which has registered
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its version with
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.Fn MODULE_VERSION .
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.Pp
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The
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.Fn MODULE_DEPEND
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macro provides hints to the kernel
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.Xr loader 8
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and to the kernel linker to ensure that the named dependency is loaded
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prior to the existing module.
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It does not change or dictate the order in which modules are
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initialized at runtime.
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.Pp
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Three versions must be specified for
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.Fa moddepend :
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.Bl -tag -width ".Fa prefversion"
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.It Fa minversion
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The minimum version on which the current module can depend.
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.It Fa maxversion
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The maximum version on which the current module can depend.
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.It Fa prefversion
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The preferred version on which the current module can depend.
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.El
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.Sh EXAMPLES
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.Bd -literal
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MODULE_DEPEND(foo, bar, 1, 3, 4);
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.Ed
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.Sh SEE ALSO
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.Xr DECLARE_MODULE 9 ,
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.Xr module 9 ,
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.Xr MODULE_VERSION 9
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.Sh AUTHORS
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.An -nosplit
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This manual page was written by
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.An Alexander Langer Aq alex@FreeBSD.org .
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