2006-02-18 11:25:28 +00:00
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.\"-
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.\" Copyright (c) 2006 Dag-Erling Co<43>dan Sm<53>rgrav
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.\" All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 18, 2006
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.Os
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.Dt KLD 3
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.Sh NAME
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.Nm kld_isloaded ,
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.Nm kld_load
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.Nd kld utility functions
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.Sh LIBRARY
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.Lb libutil
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.Sh SYNOPSIS
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.In libutil.h
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.Ft int
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.Fn kld_isloaded "const char *name"
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.Ft int
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.Fn kld_load "const char *name"
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.Sh DESCRIPTION
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These functions facilitate loading kernel modules from userland
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applications.
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.Pp
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The
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.Fn kld_isloaded
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function takes a name and returns a non-zero value if a module of that
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name is currently loaded.
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The name can be either the name of a module file
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2006-09-30 10:34:13 +00:00
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.Pq Pa cpufreq.ko ,
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2006-02-18 11:25:28 +00:00
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the same name without the
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.Pa .ko
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extension
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2006-09-30 10:34:13 +00:00
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.Pq Pa cpufreq ,
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2006-02-18 11:25:28 +00:00
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or the name of a module contained within that file
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2006-09-30 10:34:13 +00:00
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.Pq Pa cpu/ichss .
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2006-02-18 11:25:28 +00:00
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Only the latter will return correct results if the module is compiled
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into the kernel.
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.Pp
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The
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.Fn kld_load
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function is a simple wrapper around the
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2006-09-30 10:34:13 +00:00
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.Xr kldload 2
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2006-02-18 11:25:28 +00:00
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function.
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It returns zero if and only if the corresponding
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.Fn kldload
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call succeeded or returned
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.Er EEXIST
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(signifying that the requested module was already loaded).
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.Sh SEE ALSO
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2006-07-12 14:33:52 +00:00
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.Xr kldfirstmod 2 ,
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2006-02-18 11:25:28 +00:00
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.Xr kldload 2 ,
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.Xr kldnext 2 ,
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.Xr kldstat 2 ,
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.Xr modfnext 2 ,
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2006-07-12 14:33:52 +00:00
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.Xr modstat 2 ,
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.Xr kld 4
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2006-02-18 11:25:28 +00:00
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.Sh HISTORY
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The
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.Fn kld_isloaded
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and
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.Fn kld_load
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functions first appeared in
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.Fx 7.0 .
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.Sh AUTHORS
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The
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.Fn kld_isloaded
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and
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.Fn kld_load
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functions and this manual page were written by
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.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org .
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