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- /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #ifndef _SYS_FILE_H
-
- #define _SYS_FILE_H 1
- #include <features.h>
-
- #ifndef _FCNTL_H
- #include <fcntl.h>
- #endif
-
- __BEGIN_DECLS
-
-
- /* Alternate names for values for the WHENCE argument to `lseek'.
- These are the same as SEEK_SET, SEEK_CUR, and SEEK_END, respectively. */
- #define L_SET 0 /* Seek from beginning of file. */
- #define L_INCR 1 /* Seek from current position. */
- #define L_XTND 2 /* Seek from end of file. */
-
-
- /* Operations for the `flock' call. */
- #define LOCK_SH 1 /* Shared lock. */
- #define LOCK_EX 2 /* Exclusive lock. */
- #define LOCK_UN 8 /* Unlock. */
-
- /* Can be OR'd in to one of the above. */
- #define LOCK_NB 4 /* Don't block when locking. */
-
-
- /* Apply or remove an advisory lock, according to OPERATION,
- on the file FD refers to. */
- extern int __flock __P ((int __fd, int __operation));
- extern int flock __P ((int __fd, int __operation));
-
-
- __END_DECLS
-
- #endif /* sys/file.h */
-