mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/* alock.h - access lock header */
|
|
/* $OpenLDAP$ */
|
|
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
|
|
*
|
|
* Copyright 2005-2017 The OpenLDAP Foundation.
|
|
* Portions Copyright 2004-2005 Symas Corporation.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted only as authorized by the OpenLDAP
|
|
* Public License.
|
|
*
|
|
* A copy of this license is available in the file LICENSE in the
|
|
* top-level directory of the distribution or, alternatively, at
|
|
* <http://www.OpenLDAP.org/license.html>.
|
|
*/
|
|
/* ACKNOWLEDGEMENTS:
|
|
* This work was initially developed by Emily Backes at Symas
|
|
* Corporation for inclusion in OpenLDAP Software.
|
|
*/
|
|
|
|
#ifndef _ALOCK_H_
|
|
#define _ALOCK_H_
|
|
|
|
#include "portable.h"
|
|
#include <ac/time.h>
|
|
#include <ac/unistd.h>
|
|
|
|
/* environment states (all the slots together) */
|
|
#define ALOCK_CLEAN (0)
|
|
#define ALOCK_RECOVER (1)
|
|
#define ALOCK_BUSY (2)
|
|
#define ALOCK_UNSTABLE (3)
|
|
|
|
/* lock user types and states */
|
|
#define ALOCK_UNLOCKED (0)
|
|
#define ALOCK_LOCKED (1)
|
|
#define ALOCK_UNIQUE (2)
|
|
#define ALOCK_DIRTY (3)
|
|
|
|
#define ALOCK_SMASK 3
|
|
|
|
/* lock/state where recovery is not available */
|
|
#define ALOCK_NOSAVE 4
|
|
|
|
/* constants */
|
|
#define ALOCK_SLOT_SIZE (1024)
|
|
#define ALOCK_SLOT_IATTRS (4)
|
|
#define ALOCK_MAX_APPNAME (ALOCK_SLOT_SIZE - 8 * ALOCK_SLOT_IATTRS)
|
|
#define ALOCK_MAGIC (0x12345678)
|
|
|
|
LDAP_BEGIN_DECL
|
|
|
|
typedef struct alock_info {
|
|
int al_fd;
|
|
int al_slot;
|
|
} alock_info_t;
|
|
|
|
typedef struct alock_slot {
|
|
unsigned int al_lock;
|
|
time_t al_stamp;
|
|
pid_t al_pid;
|
|
char * al_appname;
|
|
} alock_slot_t;
|
|
|
|
LDAP_SLAPD_F (int) alock_open LDAP_P(( alock_info_t * info, const char * appname,
|
|
const char * envdir, int locktype ));
|
|
LDAP_SLAPD_F (int) alock_scan LDAP_P(( alock_info_t * info ));
|
|
LDAP_SLAPD_F (int) alock_close LDAP_P(( alock_info_t * info, int nosave ));
|
|
LDAP_SLAPD_F (int) alock_recover LDAP_P(( alock_info_t * info ));
|
|
|
|
LDAP_END_DECL
|
|
|
|
#endif
|