209 lines
7.6 KiB
C
209 lines
7.6 KiB
C
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/* $NetBSD: unistd.h,v 1.52 2009/08/30 16:38:48 christos Exp $ */
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/*
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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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*/
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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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#define _POSIX_JOB_CONTROL 1
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/* implementation supports job control */
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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 1
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/* saved set-user-ID and set-group-ID */
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#endif
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#define _POSIX_VERSION 200112L
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#define _POSIX2_VERSION 200112L
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/* execution-time symbolic constants */
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/*
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* POSIX options and option groups we unconditionally do or don't
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* implement. Those options which are implemented (or not) entirely
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* in user mode are defined in <unistd.h>. Please keep this list in
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* alphabetical order.
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*
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* Anything which is defined as zero below **must** have an
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* implementation for the corresponding sysconf() which is able to
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* determine conclusively whether or not the feature is supported.
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* Anything which is defined as other than -1 below **must** have
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* complete headers, types, and function declarations as specified by
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* the POSIX standard; however, if the relevant sysconf() function
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* returns -1, the functions may be stubbed out.
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*/
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/* Advisory information */
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#undef _POSIX_ADVISORY_INFO
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/* asynchronous I/O is available */
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#define _POSIX_ASYNCHRONOUS_IO 200112L
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/* barriers */
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#define _POSIX_BARRIERS 200112L
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/* chown requires correct privileges */
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#define _POSIX_CHOWN_RESTRICTED 1
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/* clock selection */
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#define _POSIX_CLOCK_SELECTION -1
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/* CPU type */
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#undef _POSIX_CPUTYPE
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/* file synchronization is available */
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#define _POSIX_FSYNC 1
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/* support IPv6 */
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#define _POSIX_IPV6 0
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/* job control is available */
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#define _POSIX_JOB_CONTROL 1
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/* memory mapped files */
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#define _POSIX_MAPPED_FILES 1
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/* memory locking whole address space */
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#define _POSIX_MEMLOCK 1
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/* memory locking address ranges */
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#define _POSIX_MEMLOCK_RANGE 1
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/* memory access protections */
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#define _POSIX_MEMORY_PROTECTION 1
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/* message passing is available */
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#define _POSIX_MESSAGE_PASSING 200112L
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/* monotonic clock */
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#define _POSIX_MONOTONIC_CLOCK 200112L
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/* too-long path comp generate errors */
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#define _POSIX_NO_TRUNC 1
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/* prioritized I/O */
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#define _POSIX_PRIORITIZED_IO -1
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/* priority scheduling */
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#define _POSIX_PRIORITY_SCHEDULING 200112L
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/* raw sockets */
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#define _POSIX_RAW_SOCKETS 200112L
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/* read/write locks */
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#define _POSIX_READER_WRITER_LOCKS 200112L
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/* realtime signals */
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#undef _POSIX_REALTIME_SIGNALS
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/* regular expressions */
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#define _POSIX_REGEXP 1
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/* semaphores */
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#define _POSIX_SEMAPHORES 0
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/* shared memory */
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#undef _POSIX_SHARED_MEMORY_OBJECTS
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/* shell */
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#define _POSIX_SHELL 1
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/* spin locks */
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#define _POSIX_SPIN_LOCKS 200112L
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/* sporadic server */
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#undef _POSIX_SPORADIC_SERVER
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/* synchronized I/O is available */
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#define _POSIX_SYNCHRONIZED_IO 1
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/* threads */
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#define _POSIX_THREADS 200112L
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/* pthread_attr for stack size */
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#define _POSIX_THREAD_ATTR_STACKSIZE 200112L
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/* pthread_attr for stack address */
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#define _POSIX_THREAD_ATTR_STACKADDR 200112L
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/* _r functions */
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#define _POSIX_THREAD_SAFE_FUNCTIONS 200112L
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/* timeouts */
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#undef _POSIX_TIMEOUTS
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/* timers */
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#define _POSIX_TIMERS 200112L
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/* typed memory objects */
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#undef _POSIX_TYPED_MEMORY_OBJECTS
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/* may disable terminal spec chars */
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#define _POSIX_VDISABLE __CAST(unsigned char, '\377')
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/* C binding */
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#define _POSIX2_C_BIND 200112L
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/* XPG4.2 shared memory */
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#define _XOPEN_SHM 0
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/* access function */
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#define F_OK 0 /* test for existence of file */
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#define X_OK 0x01 /* test for execute or search permission */
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#define W_OK 0x02 /* test for write permission */
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#define R_OK 0x04 /* test for read permission */
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/* whence values for lseek(2) */
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#define SEEK_SET 0 /* set file offset to offset */
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#define SEEK_CUR 1 /* set file offset to current plus offset */
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#define SEEK_END 2 /* set file offset to EOF plus offset */
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#if defined(_NETBSD_SOURCE)
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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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#endif
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/* configurable pathname variables; use as argument to pathconf(3) */
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#define _PC_LINK_MAX 1 /* link count */
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#define _PC_MAX_CANON 2 /* size of the canonical input queue */
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#define _PC_MAX_INPUT 3 /* type-ahead buffer size */
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#define _PC_NAME_MAX 4 /* file name size */
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#define _PC_PATH_MAX 5 /* pathname size */
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#define _PC_PIPE_BUF 6 /* pipe size */
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#define _PC_NO_TRUNC 7 /* treatment of long name components */
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#define _PC_VDISABLE 8 /* tty disable */
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#define _PC_CHOWN_RESTRICTED 9 /* chown restricted or not */
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/* configurable system variables; use as argument to sysconf(3) */
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/*
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* XXX The value of _SC_CLK_TCK is embedded in <time.h>.
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* XXX The value of _SC_PAGESIZE is embedded in <sys/shm.h>.
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*/
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#define _SC_ARG_MAX 1
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#define _SC_CHILD_MAX 2
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#define _SC_CLOCKS_PER_SEC 3
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#define _SC_CLK_TCK 3
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#define _SC_NGROUPS_MAX 4
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#define _SC_OPEN_MAX 5
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#define _SC_JOB_CONTROL 6
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#define _SC_SAVED_IDS 7
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#define _SC_VERSION 8
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#define _SC_STREAM_MAX 9
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#define _SC_TZNAME_MAX 10
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#define _SC_PAGESIZE 11
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#define _SC_PAGE_SIZE _SC_PAGESIZE
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#endif /* !_SYS_UNISTD_H_ */
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