Source code of Windows XP (NT5)
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  1. /***
  2. *fcntl.h - file control options used by open()
  3. *
  4. * Copyright (c) 1985-1988, Microsoft Corporation. All rights reserved.
  5. *
  6. *Purpose:
  7. * This file defines constants for the file control options used
  8. * by the open() function.
  9. * [System V]
  10. *
  11. *******************************************************************************/
  12. #define O_RDONLY 0x0000 /* open for reading only */
  13. #define O_WRONLY 0x0001 /* open for writing only */
  14. #define O_RDWR 0x0002 /* open for reading and writing */
  15. #define O_APPEND 0x0008 /* writes done at eof */
  16. #define O_CREAT 0x0100 /* create and open file */
  17. #define O_TRUNC 0x0200 /* open and truncate */
  18. #define O_EXCL 0x0400 /* open only if file doesn't already exist */
  19. /* O_TEXT files have <cr><lf> sequences translated to <lf> on read()'s,
  20. ** and <lf> sequences translated to <cr><lf> on write()'s
  21. */
  22. #define O_TEXT 0x4000 /* file mode is text (translated) */
  23. #define O_BINARY 0x8000 /* file mode is binary (untranslated) */
  24. /* macro to translate the C 2.0 name used to force binary mode for files */
  25. #define O_RAW O_BINARY
  26. /* Open handle inherit bit */
  27. #define O_NOINHERIT 0x0080 /* child process doesn't inherit file */