1.\" 2.\" Copyright (c) 1999 Chris Costello 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: src/lib/libc/sys/kldunload.2,v 1.6.2.6 2001/12/14 18:34:01 ru Exp $ 27.\" $DragonFly: src/lib/libc/sys/kldunload.2,v 1.2 2003/06/17 04:26:47 dillon Exp $ 28.\" 29.Dd March 3, 1999 30.Dt KLDUNLOAD 2 31.Os 32.Sh NAME 33.Nm kldunload 34.Nd unload kld files 35.Sh LIBRARY 36.Lb libc 37.Sh SYNOPSIS 38.In sys/param.h 39.In sys/linker.h 40.Ft int 41.Fn kldunload "int fileid" 42.Sh DESCRIPTION 43The function 44.Fn kldunload 45unloads a kld file from the kernel that was previously linked via 46.Xr kldload 2 . 47.Sh RETURN VALUES 48The function 49.Fn kldunload 50returns the fileid of the kld file which was previously loaded into memory via 51.Fn kldload . 52If an error occurs, 53.Fn kldunload 54will return -1 and set 55.Va errno 56to indicate the error. 57.Sh ERRORS 58The file referred to by 59.Fa fileid 60is unloaded unless: 61.Bl -tag -width Er 62.It Bq Er EPERM 63You don't have access to unlink the file from the kernel. 64.It Bq Er ENOENT 65The file was not found. 66.It Bq Er EBUSY 67You attempted to unload a file linked by the kernel. 68.El 69.Sh SEE ALSO 70.Xr kldfind 2 , 71.Xr kldfirstmod 2 , 72.Xr kldload 2 , 73.Xr kldnext 2 , 74.Xr kldstat 2 , 75.Xr kldsym 2 , 76.Xr modfind 2 , 77.Xr modfnext 2 , 78.Xr modnext 2 , 79.Xr modstat 2 , 80.Xr kld 4 , 81.Xr kldunload 8 82.Sh HISTORY 83The 84.Nm kld 85interface first appeared in 86.Fx 3.0 . 87