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files.h
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C/C++ Source or Header
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1996-09-28
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1KB
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57 lines
/*
* files.h
*
* Copyright (c) 1996 Systems Architecture Research Centre,
* City University, London, UK.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* Written by Tim Wilkinson <tim@sarc.city.ac.uk>, February 1996.
*/
#ifndef __files_h
#define __files_h
#include "config.h"
#include <jtypes.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
#if defined(HAVE_IO_H)
#include <io.h>
#endif
#if defined(HAVE_STRERROR)
#define SYS_ERROR (char*)strerror(errno)
#else
extern char* sys_errlist[];
#define SYS_ERROR sys_errlist[errno]
#endif
/* Define access() flags if not already defined */
#if !defined(W_OK)
#define W_OK 2
#define R_OK 4
#endif
/* If we don't have O_BINARY, define it to be 0 */
#if !defined(O_BINARY)
#define O_BINARY 0
#endif
/* Convert jlong's to and from off_t's */
#if defined(HAVE_NATIVE_INT64)
#define jlong2off_t(j) ((off_t)(j))
#define off_t2jlong(j) ((jlong)(j))
#else
jlong _cvt;
#define jlong2off_t(j) ((off_t)(j).jl)
#define off_t2jlong(j) (_cvt.jl = (j), _cvt)
#endif
#endif