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/* $NetBSD: unistd.h,v 1.35 2006/08/14 18:17:48 rpaulo Exp $ */
/*
* Copyright (c) 1989, 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. 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.
*
* @(#)unistd.h 8.2 (Berkeley) 1/7/94
*/
#ifndef _SYS_UNISTD_H_
#define _SYS_UNISTD_H_
#include <sys/featuretest.h>
/* compile-time symbolic constants */
#define _POSIX_JOB_CONTROL /* implementation supports job control */
/*
* According to POSIX 1003.1:
* "The saved set-user-ID capability allows a program to regain the
* effective user ID established at the last exec call."
* However, the setuid/setgid function as specified by POSIX 1003.1 does
* not allow changing the effective ID from the super-user without also
* changed the saved ID, so it is impossible to get super-user privileges
* back later. Instead we provide this feature independent of the current
* effective ID through the seteuid/setegid function. In addition, we do
* not use the saved ID as specified by POSIX 1003.1 in setuid/setgid,
* because this would make it impossible for a set-user-ID executable
* owned by a user other than the super-user to permanently revoke its
* extra privileges.
*/
#ifdef _NOT_AVAILABLE
#define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */
#endif
#define _POSIX_VERSION 199009L
#define _POSIX2_VERSION 199212L
/* execution-time symbolic constants */
/* chown requires appropriate privileges */
#define _POSIX_CHOWN_RESTRICTED 1
/* clock selection */
#define _POSIX_CLOCK_SELECTION -1
/* too-long path components generate errors */
#define _POSIX_NO_TRUNC 1
/* may disable terminal special characters */
#define _POSIX_VDISABLE ((unsigned char)'\377')
/* file synchronization is available */
#define _POSIX_FSYNC 1
/* synchronized I/O is available */
#define _POSIX_SYNCHRONIZED_IO 1
/* memory mapped files */
#define _POSIX_MAPPED_FILES 1
/* memory locking of whole address space */
#define _POSIX_MEMLOCK 1
/* memory locking address ranges */
#define _POSIX_MEMLOCK_RANGE 1
/* memory access protections */
#define _POSIX_MEMORY_PROTECTION 1
/* monotonic clock */
#define _POSIX_MONOTONIC_CLOCK 200112L
/* threads */
#define _POSIX_THREADS 200112L
/* semaphores */
#define _POSIX_SEMAPHORES 0
/* barriers */
#define _POSIX_BARRIERS 200112L
/* timers */
#define _POSIX_TIMERS 200112L
/* spin locks */
#define _POSIX_SPIN_LOCKS 200112L
/* read/write locks */
#define _POSIX_READER_WRITER_LOCKS 200112L
/* XPG4.2 shared memory */
#define _XOPEN_SHM 0
#if defined(_NETBSD_SOURCE)
/* whence values for lseek(2); renamed by POSIX 1003.1 */
#define L_SET SEEK_SET
#define L_INCR SEEK_CUR
#define L_XTND SEEK_END
/*
* fsync_range values.
*
* Note the following flag values were chosen to not overlap
* values for SEEK_XXX flags. While not currently implemented,
* it is possible to extend this call to respect SEEK_CUR and
* SEEK_END offset addressing modes.
*/
#define FDATASYNC 0x0010 /* sync data and minimal metadata */
#define FFILESYNC 0x0020 /* sync data and metadata */
#define FDISKSYNC 0x0040 /* flush disk caches after sync */
#endif
/* configurable pathname variables; use as argument to pathconf(3) */
#define _PC_LINK_MAX 1
#define _PC_MAX_CANON 2
#define _PC_MAX_INPUT 3
#define _PC_NAME_MAX 4
#define _PC_PATH_MAX 5
#define _PC_PIPE_BUF 6
#define _PC_CHOWN_RESTRICTED 7
#define _PC_NO_TRUNC 8
#define _PC_VDISABLE 9
#define _PC_SYNC_IO 10
#define _PC_FILESIZEBITS 11
/* configurable system variables; use as argument to sysconf(3) */
/*
* XXX The value of _SC_CLK_TCK is embedded in <time.h>.
* XXX The value of _SC_PAGESIZE is embedded in <sys/shm.h>.
*/
#define _SC_ARG_MAX 1
#define _SC_CHILD_MAX 2
#define _O_SC_CLK_TCK 3 /* Old version, always 100 */
#define _SC_NGROUPS_MAX 4
#define _SC_OPEN_MAX 5
#define _SC_JOB_CONTROL 6
#define _SC_SAVED_IDS 7
#define _SC_VERSION 8
#define _SC_BC_BASE_MAX 9
#define _SC_BC_DIM_MAX 10
#define _SC_BC_SCALE_MAX 11
#define _SC_BC_STRING_MAX 12
#define _SC_COLL_WEIGHTS_MAX 13
#define _SC_EXPR_NEST_MAX 14
#define _SC_LINE_MAX 15
#define _SC_RE_DUP_MAX 16
#define _SC_2_VERSION 17
#define _SC_2_C_BIND 18
#define _SC_2_C_DEV 19
#define _SC_2_CHAR_TERM 20
#define _SC_2_FORT_DEV 21
#define _SC_2_FORT_RUN 22
#define _SC_2_LOCALEDEF 23
#define _SC_2_SW_DEV 24
#define _SC_2_UPE 25
#define _SC_STREAM_MAX 26
#define _SC_TZNAME_MAX 27
#define _SC_PAGESIZE 28
#define _SC_PAGE_SIZE _SC_PAGESIZE /* 1170 compatibility */
#define _SC_FSYNC 29
#define _SC_XOPEN_SHM 30
#define _SC_SYNCHRONIZED_IO 31
#define _SC_IOV_MAX 32
#define _SC_MAPPED_FILES 33
#define _SC_MEMLOCK 34
#define _SC_MEMLOCK_RANGE 35
#define _SC_MEMORY_PROTECTION 36
#define _SC_LOGIN_NAME_MAX 37
#define _SC_MONOTONIC_CLOCK 38
#define _SC_CLK_TCK 39 /* New, variable version */
#define _SC_ATEXIT_MAX 40
#define _SC_THREADS 41
#define _SC_SEMAPHORES 42
#define _SC_BARRIERS 43
#define _SC_TIMERS 44
#define _SC_SPIN_LOCKS 45
#define _SC_READER_WRITER_LOCKS 46
#define _SC_GETGR_R_SIZE_MAX 47
#define _SC_GETPW_R_SIZE_MAX 48
#define _SC_CLOCK_SELECTION 49
/* configurable system strings */
#define _CS_PATH 1
#endif /* !_SYS_UNISTD_H_ */
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