/include/sys/unistd.h
C++ Header | 208 lines | 82 code | 16 blank | 110 comment | 0 complexity | a8bef0a568f019b1eccd7e9a0d9e1330 MD5 | raw file
Possible License(s): MIT, WTFPL, AGPL-1.0, BSD-3-Clause, GPL-3.0, LGPL-2.0, JSON, 0BSD
- /* $NetBSD: unistd.h,v 1.52 2009/08/30 16:38:48 christos 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 1
- /* 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 1
- /* saved set-user-ID and set-group-ID */
- #endif
- #define _POSIX_VERSION 200112L
- #define _POSIX2_VERSION 200112L
- /* execution-time symbolic constants */
- /*
- * POSIX options and option groups we unconditionally do or don't
- * implement. Those options which are implemented (or not) entirely
- * in user mode are defined in <unistd.h>. Please keep this list in
- * alphabetical order.
- *
- * Anything which is defined as zero below **must** have an
- * implementation for the corresponding sysconf() which is able to
- * determine conclusively whether or not the feature is supported.
- * Anything which is defined as other than -1 below **must** have
- * complete headers, types, and function declarations as specified by
- * the POSIX standard; however, if the relevant sysconf() function
- * returns -1, the functions may be stubbed out.
- */
- /* Advisory information */
- #undef _POSIX_ADVISORY_INFO
- /* asynchronous I/O is available */
- #define _POSIX_ASYNCHRONOUS_IO 200112L
- /* barriers */
- #define _POSIX_BARRIERS 200112L
- /* chown requires correct privileges */
- #define _POSIX_CHOWN_RESTRICTED 1
- /* clock selection */
- #define _POSIX_CLOCK_SELECTION -1
- /* CPU type */
- #undef _POSIX_CPUTYPE
- /* file synchronization is available */
- #define _POSIX_FSYNC 1
- /* support IPv6 */
- #define _POSIX_IPV6 0
- /* job control is available */
- #define _POSIX_JOB_CONTROL 1
- /* memory mapped files */
- #define _POSIX_MAPPED_FILES 1
- /* memory locking whole address space */
- #define _POSIX_MEMLOCK 1
- /* memory locking address ranges */
- #define _POSIX_MEMLOCK_RANGE 1
- /* memory access protections */
- #define _POSIX_MEMORY_PROTECTION 1
- /* message passing is available */
- #define _POSIX_MESSAGE_PASSING 200112L
- /* monotonic clock */
- #define _POSIX_MONOTONIC_CLOCK 200112L
- /* too-long path comp generate errors */
- #define _POSIX_NO_TRUNC 1
- /* prioritized I/O */
- #define _POSIX_PRIORITIZED_IO -1
- /* priority scheduling */
- #define _POSIX_PRIORITY_SCHEDULING 200112L
- /* raw sockets */
- #define _POSIX_RAW_SOCKETS 200112L
- /* read/write locks */
- #define _POSIX_READER_WRITER_LOCKS 200112L
- /* realtime signals */
- #undef _POSIX_REALTIME_SIGNALS
- /* regular expressions */
- #define _POSIX_REGEXP 1
- /* semaphores */
- #define _POSIX_SEMAPHORES 0
- /* shared memory */
- #undef _POSIX_SHARED_MEMORY_OBJECTS
- /* shell */
- #define _POSIX_SHELL 1
- /* spin locks */
- #define _POSIX_SPIN_LOCKS 200112L
- /* sporadic server */
- #undef _POSIX_SPORADIC_SERVER
- /* synchronized I/O is available */
- #define _POSIX_SYNCHRONIZED_IO 1
- /* threads */
- #define _POSIX_THREADS 200112L
- /* pthread_attr for stack size */
- #define _POSIX_THREAD_ATTR_STACKSIZE 200112L
- /* pthread_attr for stack address */
- #define _POSIX_THREAD_ATTR_STACKADDR 200112L
- /* _r functions */
- #define _POSIX_THREAD_SAFE_FUNCTIONS 200112L
- /* timeouts */
- #undef _POSIX_TIMEOUTS
- /* timers */
- #undef _POSIX_TIMERS
- /* typed memory objects */
- #undef _POSIX_TYPED_MEMORY_OBJECTS
- /* may disable terminal spec chars */
- #define _POSIX_VDISABLE __CAST(unsigned char, '\377')
- /* C binding */
- #define _POSIX2_C_BIND 200112L
- /* XPG4.2 shared memory */
- #define _XOPEN_SHM 0
- /* access function */
- #define F_OK 0 /* test for existence of file */
- #define X_OK 0x01 /* test for execute or search permission */
- #define W_OK 0x02 /* test for write permission */
- #define R_OK 0x04 /* test for read permission */
- /* whence values for lseek(2) */
- #define SEEK_SET 0 /* set file offset to offset */
- #define SEEK_CUR 1 /* set file offset to current plus offset */
- #define SEEK_END 2 /* set file offset to EOF plus offset */
- #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
- #endif
- /* configurable pathname variables; use as argument to pathconf(3) */
- #define _PC_LINK_MAX 1 /* link count */
- #define _PC_MAX_CANON 2 /* size of the canonical input queue */
- #define _PC_MAX_INPUT 3 /* type-ahead buffer size */
- #define _PC_NAME_MAX 4 /* file name size */
- #define _PC_PATH_MAX 5 /* pathname size */
- #define _PC_PIPE_BUF 6 /* pipe size */
- #define _PC_NO_TRUNC 7 /* treatment of long name components */
- #define _PC_VDISABLE 8 /* tty disable */
- #define _PC_CHOWN_RESTRICTED 9 /* chown restricted or not */
- /* 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 _SC_CLOCKS_PER_SEC 3
- #define _SC_CLK_TCK 3
- #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_STREAM_MAX 9
- #define _SC_TZNAME_MAX 10
- #define _SC_PAGESIZE 11
- #define _SC_PAGE_SIZE _SC_PAGESIZE
- #endif /* !_SYS_UNISTD_H_ */