1.\"- 2.\" Copyright (c) 2006 Dag-Erling Co�dan Sm�rgrav 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd February 18, 2006 29.Os 30.Dt KLD 3 31.Sh NAME 32.Nm kld_isloaded , 33.Nm kld_load 34.Nd kld utility functions 35.Sh LIBRARY 36.Lb libutil 37.Sh SYNOPSIS 38.In libutil.h 39.Ft int 40.Fn kld_isloaded "const char *name" 41.Ft int 42.Fn kld_load "const char *name" 43.Sh DESCRIPTION 44These functions facilitate loading kernel modules from userland 45applications. 46.Pp 47The 48.Fn kld_isloaded 49function takes a name and returns a non-zero value if a module of that 50name is currently loaded. 51The name can be either the name of a module file 52.Po 53.Va cpufreq.ko 54.Pc , 55the same name without the 56.Pa .ko 57extension 58.Po 59.Va cpufreq 60.Pc , 61or the name of a module contained within that file 62.Po 63.Va cpu/ichss 64.Pc . 65Only the latter will return correct results if the module is compiled 66into the kernel. 67.Pp 68The 69.Fn kld_load 70function is a simple wrapper around the 71.Fn kldload 72function. 73It returns zero if and only if the corresponding 74.Fn kldload 75call succeeded or returned 76.Er EEXIST 77(signifying that the requested module was already loaded). 78.Sh SEE ALSO 79.Xr kldfirstmod 2 , 80.Xr kldload 2 , 81.Xr kldnext 2 , 82.Xr kldstat 2 , 83.Xr modfnext 2 , 84.Xr modstat 2 , 85.Xr kld 4 86.Sh HISTORY 87The 88.Fn kld_isloaded 89and 90.Fn kld_load 91functions first appeared in 92.Fx 7.0 . 93.Sh AUTHORS 94The 95.Fn kld_isloaded 96and 97.Fn kld_load 98functions and this manual page were written by 99.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org . 100