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-.\" Copyright (c) 1998 Jonathan Lemon
-.\" 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.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd July 27, 1998
-.Dt I386_GET_IOPERM 2
-.Os
-.Sh NAME
-.Nm i386_get_ioperm ,
-.Nm i386_set_ioperm
-.Nd manage per-process access to the i386 I/O port space
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In machine/sysarch.h
-.Ft int
-.Fn i386_get_ioperm "unsigned int start" "unsigned int *length" "int *enable"
-.Ft int
-.Fn i386_set_ioperm "unsigned int start" "unsigned int length" "int enable"
-.Sh DESCRIPTION
-The
-.Fn i386_get_ioperm
-system call
-will return the permission for the process' I/O port space in the
-.Fa *enable
-argument.
-The port range starts at
-.Fa start
-and the number of contiguous entries will be returned in
-.Fa *length .
-.Pp
-The
-.Fn i386_set_ioperm
-system call
-will set access to a range of I/O ports described by the
-.Fa start
-and
-.Fa length
-arguments to the state specified by the
-.Fa enable
-argument.
-.Sh RETURN VALUES
-.Rv -std
-.Sh ERRORS
-The
-.Fn i386_get_ioperm
-and
-.Fn i386_set_ioperm
-system calls
-will fail if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-An invalid range was specified by the
-.Fa start
-or
-.Fa length
-arguments.
-.It Bq Er EPERM
-The caller of i386_set_ioperm was not the superuser.
-.El
-.Sh SEE ALSO
-.Xr io 4
-.Sh AUTHORS
-This man page was written by
-.An Jonathan Lemon .