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