56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
|
/* Copyright (C) 1991-2022 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 Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 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
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; if not, see
|
||
|
|
<https://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#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. */
|
||
|
|
#ifndef L_SET
|
||
|
|
# 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. */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/* 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 (int __fd, int __operation) __THROW;
|
||
|
|
|
||
|
|
|
||
|
|
__END_DECLS
|
||
|
|
|
||
|
|
#endif /* sys/file.h */
|