1999-04-04 12:29:31 +00:00
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.\"
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.\" Copyright (c) 1999 Chris Costello
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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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1999-08-28 00:22:10 +00:00
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.\" $FreeBSD$
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1999-04-04 12:29:31 +00:00
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.\"
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.Dd March 3, 1999
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.Dt KLDUNLOAD 2
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2001-07-10 13:41:46 +00:00
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.Os
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1999-04-04 12:29:31 +00:00
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.Sh NAME
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.Nm kldunload
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.Nd unload kld files
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2000-04-21 09:42:15 +00:00
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.Sh LIBRARY
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.Lb libc
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1999-04-04 12:29:31 +00:00
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.Sh SYNOPSIS
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1999-04-09 14:31:59 +00:00
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.Fd #include <sys/param.h>
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1999-04-04 12:29:31 +00:00
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.Fd #include <sys/linker.h>
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.Ft int
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.Fn kldunload "int fileid"
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.Sh DESCRIPTION
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The function
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.Fn kldunload
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unloads a kld file from the kernel that was previously linked via
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1999-08-13 21:02:39 +00:00
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.Xr kldload 2 .
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1999-04-04 12:29:31 +00:00
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.Sh RETURN VALUES
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The function
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.Fn kldunload
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returns the fileid of the kld file which was previously loaded into memory via
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.Fn kldload .
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If an error occurs,
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.Fn kldunload
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will return -1 and set
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.Va errno
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to indicate the error.
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.Sh ERRORS
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The file referred to by
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2000-06-23 05:05:44 +00:00
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.Fa fileid
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1999-04-04 12:29:31 +00:00
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is unloaded unless:
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.Bl -tag -width Er
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.It Bq Er EPERM
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You don't have access to unlink the file from the kernel.
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.It Bq Er ENOENT
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The file was not found.
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.It Bq Er EBUSY
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You attempted to unload a file linked by the kernel.
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2000-12-29 14:08:20 +00:00
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.El
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1999-07-01 12:16:06 +00:00
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.Sh SEE ALSO
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.Xr kldfind 2 ,
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.Xr kldfirstmod 2 ,
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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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2000-09-28 22:39:59 +00:00
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.Xr modfind 2 ,
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.Xr modnext 2 ,
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.Xr modstat 2 ,
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1999-07-01 12:16:06 +00:00
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.Xr kld 4 ,
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.Xr kldunload 8
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1999-04-04 12:29:31 +00:00
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.Sh HISTORY
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The
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.Nm kld
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1999-09-05 06:47:01 +00:00
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interface first appeared in
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.Fx 3.0 .
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