/usr/include/lockfile.h is in liblockfile-dev 1.09-6ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /*
* Copyright (C) 1999 Miquel van Smoorenburg
*
* This 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.
*
* On Debian GNU/Linux systems, the complete text of the GNU Library
* General Public License can be found in `/usr/doc/copyright/LGPL'.
* You can also find a copy on the GNU website at http://www.gnu.org/
*/
#ifndef _LOCKFILE_H
#define _LOCKFILE_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* Prototypes.
*/
int lockfile_create(const char *lockfile, int retries, int flags);
int lockfile_remove(const char *lockfile);
int lockfile_touch(const char *lockfile);
int lockfile_check(const char *lockfile, int flags);
/*
* Return values for lockfile_create()
*/
#define L_SUCCESS 0 /* Lockfile created */
#define L_NAMELEN 1 /* Recipient name too long */
#define L_TMPLOCK 2 /* Error creating tmp lockfile */
#define L_TMPWRITE 3 /* Can't write pid int tmp lockfile */
#define L_MAXTRYS 4 /* Failed after max. number of attempts */
#define L_ERROR 5 /* Unknown error; check errno */
#define L_MANLOCK 6 /* Cannot set mandatory lock on tempfile */
/*
* Flag values for lockfile_create()
*/
#define L_PID 16 /* Put PID in lockfile */
#define L_PPID 32 /* Put PPID in lockfile */
#ifdef __cplusplus
}
#endif
#endif /* _LOCKFILE_H */
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