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-.\" Copyright (c) 1991, 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"	@(#)munmap.2	8.3 (Berkeley) 5/27/94
-.\"
-.Dd May 27, 1994
-.Dt MUNMAP 2
-.Os
-.Sh NAME
-.Nm munmap
-.Nd remove a mapping
-.Sh SYNOPSIS
-.Fd #include <sys/types.h>
-.Fd #include <sys/mman.h>
-.Ft int
-.Fn munmap "void *addr" "size_t len"
-.Sh DESCRIPTION
-The
-.Fn munmap
-system call
-deletes the mappings for the specified address range,
-and causes further references to addresses within the range
-to generate invalid memory references.
-.Sh RETURN VALUES
-Upon successful completion,
-.Fn munmap
-returns zero.
-Otherwise, a value of -1 is returned and
-.Va errno
-is set to indicate the error.
-.Sh ERRORS
-.Fn Munmap
-will fail if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-The
-.Fa addr
-parameter was not page aligned, the
-.Fa len
-parameter was negative, or
-some part of the region being unmapped is outside the
-valid address range for a process.
-.Sh "SEE ALSO"
-.Xr madvise 2 ,
-.Xr mincore 2 ,
-.Xr mprotect 2 ,
-.Xr msync 2 ,
-.Xr munmap 2 ,
-.Xr getpagesize 3
-.Sh HISTORY
-The
-.Fn munmap
-function first appeared in
-.Bx 4.4 .