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- /* This is file FILE.H */
- /*
- ** Copyright (C) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
- **
- ** This file is distributed under the terms listed in the document
- ** "copying.dj", available from DJ Delorie at the address above.
- ** A copy of "copying.dj" should accompany this file; if not, a copy
- ** should be available from where this file was obtained. This file
- ** may not be distributed without a verbatim copy of "copying.dj".
- **
- ** This file is distributed WITHOUT ANY WARRANTY; without even the implied
- ** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
- /*
- * 2003-11-27 Nicholas Wourms <nwourms@netscape.net>:
- *
- * Include sys/cdefs.h. Add function prototype for flock().
- * Add some comments from BSD's header for further clarity.
- * (L_SET, L_CURR, L_INCR, L_XTND): Redefine as the macros
- * SEEK_SET, SEEK_CUR, SEEK_CUR, & SEEK_END respectively.
- * (LOCK_SH,LOCK_EX,LOCK_NB,LOCK_UN): New macros for flock().
- */
- #ifndef _FILE_H_
- #define _FILE_H_
-
- #include <sys/cdefs.h>
- #include <fcntl.h>
-
- /* Whence values for lseek(); renamed by POSIX 1003.1 */
- #define L_SET SEEK_SET
- #define L_CURR SEEK_CUR
- #define L_INCR SEEK_CUR
- #define L_XTND SEEK_END
-
- /* Operations for flock() function */
- #define LOCK_SH 1 /* Shared lock. */
- #define LOCK_EX 2 /* Exclusive lock. */
- #define LOCK_NB 4 /* Don't block when locking. */
- #define LOCK_UN 8 /* Unlock. */
-
- /* Operations for access function */
- #define F_OK 0 /* does file exist */
- #define X_OK 1 /* is it executable or searchable by caller */
- #define W_OK 2 /* is it writable by caller */
- #define R_OK 4 /* is it readable by caller */
-
- /* Apply or remove an advisory lock on the file fd refers to. */
- __BEGIN_DECLS
-
- int _EXFUN(flock, (int, int));
-
- __END_DECLS
-
- #endif
-