openldap/include/lutil_lockf.h

/*
 * Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted only
 * as authorized by the OpenLDAP Public License.  A copy of this
 * license is available at http://www.OpenLDAP.org/license.html or
 * in file LICENSE in the top-level directory of the distribution.
 */

/* File locking methods
 *
 * lutil_lockf() will block until an exclusive lock is acquired.
 */

#ifndef _LUTIL_LOCKF_H_
#define _LUTIL_LOCKF_H_

LDAP_BEGIN_DECL

LDAP_F int lutil_lockf LDAP_P(( int fd ));
LDAP_F int lutil_unlockf LDAP_P(( int fd ));

LDAP_END_DECL

#endif /* _LUTIL_LOCKF_H_ */
Functions for using fcntl to lock/unlock files in case lockf is not available 1999-03-14 03:25:15 +08:00			`/*`
			`* Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA`
			`* All rights reserved.`
			`*`
			`* Redistribution and use in source and binary forms are permitted only`
			`* as authorized by the OpenLDAP Public License. A copy of this`
			`* license is available at http://www.OpenLDAP.org/license.html or`
			`* in file LICENSE in the top-level directory of the distribution.`
			`*/`
Update locking codes. 1999-03-27 01:43:23 +08:00
All implementations of lutil_lockf (aka ldap_lockf) block until the lock is acquired. Add comments to that effect. Remove unnecessary busy loops from slapd/lock.c and slurpd/lock.c. 1999-03-29 06:43:43 +08:00			`/* File locking methods`
			`*`
			`* lutil_lockf() will block until an exclusive lock is acquired.`
			`*/`
Functions for using fcntl to lock/unlock files in case lockf is not available 1999-03-14 03:25:15 +08:00
			`#ifndef _LUTIL_LOCKF_H_`
			`#define _LUTIL_LOCKF_H_`

			`LDAP_BEGIN_DECL`

Update lutil_lockf (aka: ldap_lockf) to hide implementation in library, not header. Eliminate need for <ac/unistd.h> to sometimes include <fcntl.h> and/or <sys/file.h>. Change lock API to expect fd not FILE*. Allows wider use and eliminates requirement that lutil_lockf.h depencency on stdio.h. Implemented lockf, fcntl, and flock locking in lutil/lockf.c. Additional implementations (including no-op) may be needed. Update slapd/lock.c and slurpd/lock.c to use new API. 1999-03-29 05:39:02 +08:00			`LDAP_F int lutil_lockf LDAP_P(( int fd ));`
			`LDAP_F int lutil_unlockf LDAP_P(( int fd ));`
Functions for using fcntl to lock/unlock files in case lockf is not available 1999-03-14 03:25:15 +08:00
			`LDAP_END_DECL`

			`#endif /* _LUTIL_LOCKF_H_ */`