__unistd.h
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:4k
- /*-
- * Copyright (c) 1990 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- *
- * from: @(#)stdlib.h 5.13 (Berkeley) 6/4/91
- * $Id$
- */
- #ifndef _SYS___UNISTD_H_
- #define _SYS___UNISTD_H_
- #include <sys/types.h>
- #ifndef NULL
- #define NULL 0
- #endif
- #define ioctl_request_type unsigned long /* For fd.c */
- /* compile-time symbolic constants */
- #define _POSIX_JOB_CONTROL /* implementation supports job control */
- #ifdef _NOT_AVAILABLE
- #define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */
- #endif
- #define _POSIX_VERSION 198808L
- #define _POSIX2_VERSION 199212L
- /* execution-time symbolic constants */
- /* chown requires appropriate privileges */
- #define _POSIX_CHOWN_RESTRICTED 1
- /* too-long path components generate errors */
- #define _POSIX_NO_TRUNC 1
- /* may disable terminal special characters */
- /* #define _POSIX_VDISABLE 0xff */
- /* configurable pathname variables */
- #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
- /* configurable system variables */
- #define _SC_ARG_MAX 1
- #define _SC_CHILD_MAX 2
- #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_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
- /* configurable system strings */
- #define _CS_PATH 1
- #endif