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- /* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Phil Blundell, based on the Alpha version by
- David Mosberger.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include <sys/io.h>
- #include <errno.h>
- #define MAX_PORT 0x10000
- int iopl(int level)
- {
- if (level > 3) {
- __set_errno(EINVAL);
- return -1;
- }
- if (level)
- return ioperm(0, MAX_PORT, 1);
- return 0;
- }
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