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- /*-----------------------------------------------------------------------*
- * filename - umask.c
- *
- * function(s)
- * umask - set file read/write permission mask
- *-----------------------------------------------------------------------*/
-
- /*
- * C/C++ Run Time Library - Version 5.0
- *
- * Copyright (c) 1987, 1992 by Borland International
- * All Rights Reserved.
- *
- */
-
-
- #include <io.h>
- #include <RtlData.h>
-
- #if !defined( _RTLDLL )
- extern unsigned _notUmask;
- #endif
-
- /*---------------------------------------------------------------------*
-
- Name umask - set file read/write permission mask
-
- Usage #include <io.h>
- unsigned umask(unsigned modeMask)
-
- Prototype in io.h
-
- Description Changes the read/write permission mask used for "open"
- and "creat" calls.
-
- Return value The replaced value of the umask. There is no error return.
-
- Note "umask" is stored internally in inverted form, for convenience.
-
- *---------------------------------------------------------------------*/
- unsigned umask(unsigned modeMask)
- {
- register oldMask;
- _QRTLDataBlock;
-
- oldMask = ~_QRTLInstanceData(_notUmask);
- _QRTLInstanceData(_notUmask) = ~modeMask;
- return (oldMask);
- }
-