mirror of https://github.com/acidanthera/audk.git
96 lines
3.9 KiB
C
96 lines
3.9 KiB
C
/** @file
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Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. 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. 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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* @(#)unistd.h 8.2 (Berkeley) 1/7/94
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NetBSD: unistd.h,v 1.35 2006/08/14 18:17:48 rpaulo Exp
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**/
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#ifndef _SYS_UNISTD_H_
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#define _SYS_UNISTD_H_
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#include <sys/featuretest.h>
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/* compile-time symbolic constants */
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/*
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* According to POSIX 1003.1:
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* "The saved set-user-ID capability allows a program to regain the
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* effective user ID established at the last exec call."
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* However, the setuid/setgid function as specified by POSIX 1003.1 does
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* not allow changing the effective ID from the super-user without also
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* changed the saved ID, so it is impossible to get super-user privileges
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* back later. Instead we provide this feature independent of the current
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* effective ID through the seteuid/setegid function. In addition, we do
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* not use the saved ID as specified by POSIX 1003.1 in setuid/setgid,
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* because this would make it impossible for a set-user-ID executable
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* owned by a user other than the super-user to permanently revoke its
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* extra privileges.
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*/
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#ifdef _NOT_AVAILABLE
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#define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */
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#endif
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#define _POSIX_VERSION 199009L
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#define _POSIX2_VERSION 199212L
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/* execution-time symbolic constants */
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/* timers */
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#define _POSIX_TIMERS 200112L
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/* Always ensure that these are consistent with <fcntl.h>!
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whence values for lseek(2).
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*/
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#ifndef SEEK_SET
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#define SEEK_SET 0 /**< set file offset to offset */
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#endif
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#ifndef SEEK_CUR
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#define SEEK_CUR 1 /**< set file offset to current plus offset */
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#endif
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#ifndef SEEK_END
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#define SEEK_END 2 /**< set file offset to EOF plus offset */
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#endif
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/* whence values for lseek(2); renamed by POSIX 1003.1 */
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#define L_SET SEEK_SET
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#define L_INCR SEEK_CUR
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#define L_XTND SEEK_END
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/* configurable system strings */
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#define _CS_PATH 1
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#endif /* !_SYS_UNISTD_H_ */
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