/* * @(#)unistd.h 4.1 (ULTRIX) 7/2/90 */ /************************************************************************ * * * Copyright (c) 1985, 1987, 1989 by * * Digital Equipment Corporation, Maynard, MA * * All rights reserved. * * * * This software is furnished under a license and may be used and * * copied only in accordance with the terms of such license and * * with the inclusion of the above copyright notice. This * * software or any other copies thereof may not be provided or * * otherwise made available to any other person. No title to and * * ownership of the software is hereby transferred. * * * * This software is derived from software received from the * * University of California, Berkeley, and from Bell * * Laboratories. Use, duplication, or disclosure is subject to * * restrictions under license agreements with University of * * California and with AT&T. * * * * The information in this software is subject to change without * * notice and should not be construed as a commitment by Digital * * Equipment Corporation. * * * * Digital assumes no responsibility for the use or reliability * * of its software on equipment which is not supplied by Digital. * * * ************************************************************************/ /************************************************************************ * Modification History * * Jon Reeves, 07-Dec-1989 * 009 Namespace protection. * * 008 Jon Reeves, 15-Sep-1989 * Fix NULL for consistency * * 007 Jon Reeves, 18-Jul-1989 * Add a few defines and many function definitions for X/Open. * * 006 Mark A. Parenti, 25-Aug-1988 * Remove numerous defines that have been deleted from the * final POSIX standard. * * 005 Mark A. Parenti, 05-Aug-1988 * Add definition of NULL as per POSIX * * 004 Mark A. Parenti, 11-July-1988 * Remove POSIX_PATHNAME_NULL. Add POSIX_VDISABLE. Both POSIX 12.3 * changes. * * 003 Mark A. Parenti, 05-Feb-1988 * Latch R_OK to prevent warning message if is * also included. * * 002 Mark A. Parenti, 30-Nov-1987 * Add definitions for POSIX. * * 001 David L Ballenger, 17-Oct-1985 * Change defintion of IN_PATH so that it is not BRL specific. * * Based on: unistd.h 1.1 (BRL UNIX System V emulation version) * 85/02/24 D A Gwyn * ************************************************************************/ #ifndef _UNISTD_H_ #define _UNISTD_H_ /* once-only latch */ /* * Symbolic constants for the "access" call. Latch this as these are also * defined in for compatibility reasons. */ #ifndef R_OK #define R_OK 4 /* Test for "Read Permission */ #define W_OK 2 /* Test for "Write Permission */ #define X_OK 1 /* Test for "Execute" (Search) Permission */ #define F_OK 0 /* Test for existence of file */ #endif /* R_OK */ /* 1003.1a notwithstanding, this is required; see 1003.1 2.8.1. */ #ifndef NULL #define NULL 0 #endif /* NULL */ #if !defined(_POSIX_SOURCE) /* Withdrawn in XPG3 */ /* Symbolic constants for the "lockf" function: */ #define F_ULOCK 0 /* Unlock a previously locked region */ #define F_LOCK 1 /* Lock a region for exclusive use */ #define F_TLOCK 2 /* Test and lock a region for exclusive use */ #define F_TEST 3 /* Test region for other processes' locks */ /* Path names: */ #define GF_PATH "/etc/group" /* Path name of the "group" file */ #define PF_PATH "/etc/passwd" /* Path name of the "passwd" file */ #define IN_PATH "/usr/include" /* Path name for <...> directory */ #endif /* !defined(_POSIX_SOURCE) */ /* Symbolic constants for the "lseek" function: */ /* Set file pointer to offset */ #define SEEK_SET 0 /* Set file pointer to its current value plus offset */ #define SEEK_CUR 1 /* Set file pointer to the size of the file plus offset */ #define SEEK_END 2 /* POSIX optionals */ #define _POSIX_JOB_CONTROL 1 /* Job Control Present */ #define _POSIX_SAVED_IDS 1 /* Support saved-set-ids feature */ #define _POSIX_VERSION 198808L /* POSIX version */ #define _POSIX_CHOWN_RESTRICTED 1 /* chown() restricted to super user */ #define _POSIX_NO_TRUNC 1 /* Pathname longer than NAME_MAX err */ #define _POSIX_VDISABLE 0 /* termio(s) special character disable */ /* POSIX sysconf() defines */ #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_XOPEN_VERSION 9 #define _SC_PASS_MAX 10 /* POSIX pathconf() defines */ #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 /* X/Open specific */ #define _XOPEN_VERSION 3 /* X/Open Portability Guide version */ /* Stream numbers (why here and not stdio? ah well, that's X/Open for ya) */ #define STDIN_FILENO 0 /* standard in */ #define STDOUT_FILENO 1 /* standard out */ #define STDERR_FILENO 2 /* standard error */ #ifndef KERNEL /* * Function declarations */ extern int access(), chdir(), chown(), close(), dup(), dup2(), execl(), execle(), execlp(), execv(), execve(), execvp(), getgroups(), isatty(), link(), // pause(), pipe(), read(), rename(), rmdir(), setgid(), setpgid(), setuid(), tcsetpgrp(), unlink(), write(); extern unsigned int alarm(), sleep(); extern long fpathconf(), pathconf(), sysconf(); extern char *ctermid(), *cuserid(), *getcwd(), *getlogin(), *ttyname(); extern void _exit(); /* Kludge-around for POSIX typedef braindamage */ extern short /* gid_t */ getegid(), getgid(); extern int /* off_t */ lseek(); extern int /* pid_t */ fork(), getpgrp(), getppid(), setsid(), tcgetpgrp(); //extern "C" unsigned int getpid(); extern short /* uid_t */ geteuid(), getuid(); #endif /* KERNEL */ #endif /* _UNISTD_H_ */