xref: /titanic_50/usr/src/cmd/nscd/nscd_seqnum.c (revision cb5caa98562cf06753163f558cbcfe30b8f4673a)
1*cb5caa98Sdjl /*
2*cb5caa98Sdjl  * CDDL HEADER START
3*cb5caa98Sdjl  *
4*cb5caa98Sdjl  * The contents of this file are subject to the terms of the
5*cb5caa98Sdjl  * Common Development and Distribution License (the "License").
6*cb5caa98Sdjl  * You may not use this file except in compliance with the License.
7*cb5caa98Sdjl  *
8*cb5caa98Sdjl  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*cb5caa98Sdjl  * or http://www.opensolaris.org/os/licensing.
10*cb5caa98Sdjl  * See the License for the specific language governing permissions
11*cb5caa98Sdjl  * and limitations under the License.
12*cb5caa98Sdjl  *
13*cb5caa98Sdjl  * When distributing Covered Code, include this CDDL HEADER in each
14*cb5caa98Sdjl  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*cb5caa98Sdjl  * If applicable, add the following below this CDDL HEADER, with the
16*cb5caa98Sdjl  * fields enclosed by brackets "[]" replaced with your own identifying
17*cb5caa98Sdjl  * information: Portions Copyright [yyyy] [name of copyright owner]
18*cb5caa98Sdjl  *
19*cb5caa98Sdjl  * CDDL HEADER END
20*cb5caa98Sdjl  */
21*cb5caa98Sdjl /*
22*cb5caa98Sdjl  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23*cb5caa98Sdjl  * Use is subject to license terms.
24*cb5caa98Sdjl  */
25*cb5caa98Sdjl 
26*cb5caa98Sdjl #pragma ident	"%Z%%M%	%I%	%E% SMI"
27*cb5caa98Sdjl 
28*cb5caa98Sdjl #include "nscd_db.h"
29*cb5caa98Sdjl 
30*cb5caa98Sdjl static nscd_seq_num_t	acc_seq = 1;
31*cb5caa98Sdjl static mutex_t		seq_mutex = DEFAULTMUTEX;
32*cb5caa98Sdjl static nscd_cookie_t	cookie = 1234;
33*cb5caa98Sdjl static mutex_t		cookie_mutex = DEFAULTMUTEX;
34*cb5caa98Sdjl 
35*cb5caa98Sdjl nscd_seq_num_t
36*cb5caa98Sdjl _nscd_get_seq_num()
37*cb5caa98Sdjl {
38*cb5caa98Sdjl 	nscd_seq_num_t	seq_num;
39*cb5caa98Sdjl 
40*cb5caa98Sdjl 	(void) mutex_lock(&seq_mutex);
41*cb5caa98Sdjl 	seq_num = acc_seq;
42*cb5caa98Sdjl 	acc_seq += 1;
43*cb5caa98Sdjl 	(void) mutex_unlock(&seq_mutex);
44*cb5caa98Sdjl 
45*cb5caa98Sdjl 	return (seq_num);
46*cb5caa98Sdjl }
47*cb5caa98Sdjl 
48*cb5caa98Sdjl nscd_cookie_t
49*cb5caa98Sdjl _nscd_get_cookie()
50*cb5caa98Sdjl {
51*cb5caa98Sdjl 	nscd_cookie_t	ret;
52*cb5caa98Sdjl 
53*cb5caa98Sdjl 	(void) mutex_lock(&cookie_mutex);
54*cb5caa98Sdjl 	ret = cookie;
55*cb5caa98Sdjl 	cookie += 1;
56*cb5caa98Sdjl 	(void) mutex_unlock(&cookie_mutex);
57*cb5caa98Sdjl 
58*cb5caa98Sdjl 	return (ret);
59*cb5caa98Sdjl }
60