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.\" $FreeBSD$ 27.\" 28.Dd December 25, 2008 29.Dt KLDUNLOAD 2 30.Os 31.Sh NAME 32.Nm kldunload , kldunloadf 33.Nd unload kld files 34.Sh LIBRARY 35.Lb libc 36.Sh SYNOPSIS 37.In sys/param.h 38.In sys/linker.h 39.Ft int 40.Fn kldunload "int fileid" 41.Ft int 42.Fn kldunloadf "int fileid" "int flags" 43.Sh DESCRIPTION 44The 45.Fn kldunload 46system call 47unloads a kld file from the kernel that was previously linked via 48.Xr kldload 2 . 49.Pp 50The 51.Fn kldunloadf 52system call accepts an additional flags argument, which may be one of 53.Dv LINKER_UNLOAD_NORMAL , 54giving the same behavior as 55.Fn kldunload , 56or 57.Dv LINKER_UNLOAD_FORCE , 58which causes the unload to ignore a failure to quiesce the module. 59.Sh RETURN VALUES 60.Rv -std 61.Sh ERRORS 62The file referred to by 63.Fa fileid 64is unloaded unless: 65.Bl -tag -width Er 66.It Bq Er EPERM 67You do not have access to unlink the file from the kernel. 68.It Bq Er ENOENT 69The file was not found. 70.It Bq Er EBUSY 71You attempted to unload a file linked by the kernel. 72.It Bq Er EINVAL 73The 74.Fn kldunloadf 75system call was passed invalid flags. 76.El 77.Sh SEE ALSO 78.Xr kldfind 2 , 79.Xr kldfirstmod 2 , 80.Xr kldload 2 , 81.Xr kldnext 2 , 82.Xr kldstat 2 , 83.Xr kldsym 2 , 84.Xr modfind 2 , 85.Xr modfnext 2 , 86.Xr modnext 2 , 87.Xr modstat 2 , 88.Xr kld 4 , 89.Xr kldunload 8 90.Sh HISTORY 91The 92.Nm kld 93interface first appeared in 94.Fx 3.0 . 95