1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 *
25 */
26
27#ifndef	_QUEUE_H
28#define	_QUEUE_H
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34#include <pthread.h>
35#include <stddef.h>
36
37typedef struct aln audit_link_t;
38struct aln {
39	audit_link_t	*aln_next;
40};
41
42/* one audit_rec_t per audit record */
43
44typedef struct abq audit_rec_t;
45struct abq {
46	audit_link_t	abq_l;
47	int		abq_ref_count;
48	size_t		abq_buf_len;	/* space allocated */
49	size_t		abq_data_len;	/* space used	   */
50	char		abq_buffer[1];	/* variable length */
51};
52#define	AUDIT_REC_HEADER  offsetof(audit_rec_t, abq_buffer[0])
53
54/* one audit_q_t entry per audit record per plugin */
55
56typedef struct aqq audit_q_t;		/* plugin queued data */
57struct aqq {
58	audit_link_t	aqq_l;
59	audit_rec_t	*aqq_data;
60	uint64_t	aqq_sequence;
61};
62
63/* queue head */
64
65typedef struct auq au_queue_t;
66
67struct auq {
68	void		*auq_head;
69	void		*auq_tail;
70	int		auq_count;
71	pthread_mutex_t	auq_lock;
72};
73
74int		audit_dequeue(au_queue_t *, void **);
75void		audit_queue_destroy(au_queue_t *);
76void		audit_enqueue(au_queue_t *, void *);
77int		audit_queue_size(au_queue_t *);
78void		audit_queue_init(au_queue_t *);
79audit_rec_t	*audit_release(pthread_mutex_t *, audit_rec_t *);
80void		audit_incr_ref(pthread_mutex_t *, audit_rec_t *);
81
82#ifdef __cplusplus
83}
84#endif
85
86#endif	/* _QUEUE_H */
87