unistd.h

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/* @(#)unistd.h 1.28 17/04/30 Copyright 1996-2017 J. Schilling */
/*
 *  Definitions for unix system interface
 *
 *  Copyright (c) 1996-2017 J. Schilling
 */
/*
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * See the file CDDL.Schily.txt in this distribution for details.
 * A copy of the CDDL is also available via the Internet at
 * http://www.opensource.org/licenses/cddl1.txt
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file CDDL.Schily.txt from this distribution.
 */
 
#ifndef _SCHILY_UNISTD_H
#define _SCHILY_UNISTD_H
 
#ifndef _SCHILY_MCONFIG_H
#include <schily/mconfig.h>
#endif
 
/*
 * unistd.h grants things like off_t to be typedef'd.
 */
#ifndef _SCHILY_TYPES_H
#include <schily/types.h>
#endif
 
/*
 * inttypes.h grants things like Intptr_t to be typedef'd.
 */
#ifndef _SCHILY_INTTYPES_H
#include <schily/inttypes.h>
#endif
 
#ifdef  HAVE_UNISTD_H
 
#ifndef _INCL_UNISTD_H
#include <unistd.h>
#define _INCL_UNISTD_H
#endif
 
#ifndef _SC_PAGESIZE
#ifdef  _SC_PAGE_SIZE   /* HP/UX & OSF */
#define _SC_PAGESIZE    _SC_PAGE_SIZE
#endif
#endif
 
#else   /* !HAVE_UNISTD_H */
#ifndef _SCHILY_STDLIB_H
#include <schily/stdlib.h>  /* MSVC: no unistd.h environ is in stdlib.h */
#endif
#endif  /* !HAVE_UNISTD_H */
 
/*
 * MSVC has getcwd()/chdir()/mkdir()/rmdir() in direct.h
 */
#if defined(_MSC_VER) && defined(HAVE_DIRECT_H)
#ifndef _INCL_DIRECT_H
#include <direct.h>
#define _INCL_DIRECT_H
#endif
#endif
 
/*
 * MSVC has size_t in stddef.h
 */
#ifdef HAVE_STDDEF_H
#ifndef _INCL_STDDEF_H
#include <stddef.h>
#define _INCL_STDDEF_H
#endif
#endif
 
#ifndef STDIN_FILENO
#   ifdef   JOS
#       ifndef  _SCHILY_JOS_IO_H
#       include <schily/jos_io.h>
#       endif
#   else
#       define  STDIN_FILENO    0
#       define  STDOUT_FILENO   1
#       define  STDERR_FILENO   2
#   endif
#endif
 
#ifndef R_OK
/* Symbolic constants for the "access" routine: */
#define R_OK    4   /* Test for Read permission */
#define W_OK    2   /* Test for Write permission */
#define X_OK    1   /* Test for eXecute permission */
#define F_OK    0   /* Test for existence of File */
#endif
#ifndef E_OK
#ifdef  HAVE_ACCESS_E_OK
#ifdef  EFF_ONLY_OK
#define E_OK    EFF_ONLY_OK /* Irix */
#else
#ifdef  EUID_OK
#define E_OK    EUID_OK /* UNICOS (0400) */
#else
#define E_OK    010 /* Test effective uids */
#endif  /* EUID_OK */
#endif  /* EFF_ONLY_OK */
#else
#define E_OK    0
#endif  /* HAVE_ACCESS_E_OK */
#endif  /* !E_OK */
 
/* Symbolic constants for the "lseek" routine: */
#ifndef SEEK_SET
#define SEEK_SET    0   /* Set file pointer to "offset" */
#endif
#ifndef SEEK_CUR
#define SEEK_CUR    1   /* Set file pointer to current plus "offset" */
#endif
#ifndef SEEK_END
#define SEEK_END    2   /* Set file pointer to EOF plus "offset" */
#endif
 
#ifdef  __cplusplus
extern "C" {
#endif
 
#ifndef HAVE_ENVIRON_DEF
extern  char    **environ;
#endif
 
#if !defined(HAVE_UNISTD_H) || !defined(_POSIX_VERSION)
/*
 * Maybe we need a lot more definitions here...
 * It is not clear whether we should have prototyped definitions.
 */
#if !defined(_MSC_VER) && !defined(__MINGW32__)
/*
 * MS C comes with broken prototypes in wrong header files (in our case, the
 * wrong prototype is in io.h). Avoid to redefine the broken MS stuff with
 * correct prototypes.
 */
extern  int access  __PR((const char *, int));
extern  int close   __PR((int));
extern  int dup __PR((int));
extern  int dup2    __PR((int, int));
extern  int link    __PR((const char *, const char *));
extern  int read    __PR((int, void *, size_t));
extern  int unlink  __PR((const char *));
extern  int write   __PR((int, const void *, size_t));
#endif
#if !defined(_MSC_VER) && !defined(__MINGW32__)
/*
 * MS C comes with broken prototypes in wrong header files (in our case, the
 * wrong prototype is in stdlib.h). Avoid to redefine the broken MS stuff with
 * correct prototypes.
 */
extern  void    _exit   __PR((int));
#endif
#endif
 
#if !defined(HAVE_PIPE) && defined(HAVE__PIPE) && defined(HAVE_IO_H)
#ifndef _SCHILY_LIMITS_H
#include <schily/limits.h>  /* for PIPE_BUF */
#endif
#ifndef _SCHILY_FCNTL_H
#include <schily/fcntl.h>   /* for O_BINARY */
#endif
#ifndef _SCHILY_IO_H
#include <schily/io.h>      /* for _pipe() */
#endif
 
#define pipe(pp)    _pipe(pp, PIPE_BUF, O_BINARY)
#endif
 
#ifdef  __cplusplus
}
#endif
 
#endif  /* _SCHILY_UNISTD_H */