fcntl.h Define flag values accessible to open.

Copyright (c) Borland International 1987,1988
All Rights Reserved.
*/
#if __STDC__
#define _Cdecl
#else
#define _Cdecl cdecl
#endif

extern int _Cdecl _fmode;

/* The first three can only be set by open */

#define O_RDONLY     1
#define O_WRONLY     2
#define O_RDWR     4

/* Flag values for open only */

#define O_CREAT 0x0100 /* create and open file */
#define O_TRUNC 0x0200 /* open with truncation */
#define O_EXCL 0x0400 /* exclusive open */

/* The "open flags" defined above are not needed after open, hence they
   are re-used for other purposes when the file is running.  Sorry, its
   getting crowded !
*/
#define _O_RUNFLAGS 0x0700
#define _O_EOF 0x0200 /* set when text file hits ^Z   */

/* a file in append mode may be written to only at its end.
*/
#define O_APPEND 0x0800 /* to end of file */

/* MSDOS special bits */

#define O_CHANGED 0x1000 /* user may read these bits, but */
#define O_DEVICE 0x2000 /*   only RTL\io functions may touch. */
#define O_TEXT 0x4000 /* CR-LF translation */
#define O_BINARY 0x8000 /* no translation */

/* DOS 3.x options */

#define O_NOINHERIT 0x80
#define O_DENYALL 0x10
#define O_DENYWRITE 0x20
#define O_DENYREAD 0x30
#define O_DENYNONE 0x40