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BSD 4.3

/* $Header: /var/lib/cvsd/repos/CSRG/43BSD/contrib/mkmf/src/system.h,v 1.1.1.1 2018/04/24 16:12:54 root Exp $ */

/*
 * System-dependent definitions
 *
 * Author: Peter J. Nicklin
 */
#define FILEXIST(file)		(access(file,0) ? 0 : 1)
#define FILEWRITE(file)		(access(file,6) ? 0 : 1)

#ifdef V4BSD
#include <sys/file.h>
#define CREATE(name,flags,mode)	open(name,flags|FCREAT,mode)
#define FORK()			vfork()
#define OPEN(name,flags,mode)	open(name,flags,mode)
#define RENAME(from,to)		rename(from,to)
#else
#define NBBY 8            
#define O_RDONLY		000
#define O_WRONLY		001
#define O_RDWR			002
#define CREATE(name,flags,mode)	creat(name,mode)
#define FORK()			fork()
#define OPEN(name,flags,mode)	open(name,flags)
#define RENAME(from,to)		unlink(to); link(from,to); unlink(from)
#endif

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