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Filename/usr/include/sys/file.h
Size1.71 kb
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Ownerapache
Create time23-Dec-2025 17:41
Last modified09-Apr-2019 22:17
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/* Copyright (C) 1991, 92, 96, 97, 98, 99 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 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. */
#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 */