81 lines
3.0 KiB
Groff
81 lines
3.0 KiB
Groff
.\" Copyright (c) 1980, 1991 Regents of the University of California.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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.\" from: @(#)fork.2 6.5 (Berkeley) 3/10/91
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.\" $Id: i386_get_ioperm.2,v 1.1 1995/10/15 02:29:09 mycroft Exp $
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.\"
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.Dd October 14, 1995
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.Dt I386_GET_IOPERM 2
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.Os NetBSD
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.Sh NAME
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.Nm i386_get_ioperm ,
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.Nm i386_set_ioperm
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.Nd manage i386 per-process I/O permission bitmap
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.Sh SYNOPSIS
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.Fd #include <machine/sysarch.h>
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.Ft int
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.Fn i386_get_ioperm "u_long *iomap"
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.Ft int
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.Fn i386_set_ioperm "u_long *iomap"
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.Sh DESCRIPTION
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.Fn i386_get_ioperm
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copies the current I/O permission bitmap into the memory referenced by
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.Ar iomap .
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.Pp
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.Fn i386_set_ioperm
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sets the I/O permission bitmap from the data pointed to by
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.Ar iomap .
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This call is restricted to the super-user.
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn i386_get_ioperm
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and
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.Fn i386_set_ioperm
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return 0.
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Otherwise, a value of -1 is returned and the global
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variable
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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.Fn i386_get_ioperm
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and
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.Fn i386_set_ioperm
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will fail if:
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.Bl -tag -width [EINVAL]
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.It Bq Er EFAULT
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.Ar Iomap
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points outside the process's allocated address space.
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.It Bq Er EPERM
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The caller was not the super-user.
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.El
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.Sh REFERENCES
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i386 Microprocessor Programmer's Reference Manual, Intel
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