/usr/include/lockdev.h is in liblockdev1-dev 1.0.3-1.6+b1.
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 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | /*
* lockdev.h
* (c) 1997, 1999 by Fabrizio Polacco <fpolacco@debian.org>
* this source program is part of the liblockdev library.
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License (LGPL) as published by the Free Software Foundation;
* version 2.1 dated February 1999.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License (LGPL) along with this program; if not, write
* to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* On Debian GNU/Linux systems, the complete text of the
* GNU Library General Public License can be found in
* `/usr/share/common-licenses/LGPL'.
*
*
*
* This library provides a stable way to lock devices on a Linux or
* Unix system, both following FSSTND 1.2 and SVr4 device locking
* methods, and it's built to be portable and to avoid conflicts
* with other programs.
* It is highly reccommended that all programs that needs to lock a
* device (or test if it is locked), call the functions defined in
* the public interface of this library.
*
*/
#ifndef _LOCKDEV_H_
#define _LOCKDEV_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
/* API of the library */
void liblockdev_incr_debug (void);
void liblockdev_reset_debug (void);
pid_t dev_testlock (const char *devname);
pid_t dev_lock (const char *devname);
pid_t dev_relock (const char * devname,
const pid_t old_pid);
pid_t dev_unlock (const char * devname,
const pid_t pid);
#ifdef __cplusplus
};
#endif
#endif /* _LOCKDEV_H_ */
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