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 2008 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_SHARE_H
27#define	_SYS_SHARE_H
28
29#include <sys/types.h>
30
31#ifdef	__cplusplus
32extern "C" {
33#endif
34
35/*
36 * Maximum size of a shrlock owner.
37 * Must be large enough to handle a netobj.
38 */
39#define	MAX_SHR_OWNER_LEN	1024
40
41/*
42 * Contents of shrlock owner field for local share requests
43 */
44struct shr_locowner {
45	pid_t	sl_pid;
46	int	sl_id;
47};
48
49struct shrlock {
50	short	s_access;
51	short	s_deny;
52	int32_t	s_sysid;	/* 0 if local otherwise passed by lm */
53	pid_t	s_pid;		/* 0 if remote otherwise local pid */
54	int	s_own_len;	/* if 0 and F_UNSHARE matching sysid */
55	caddr_t	s_owner;	/* variable length opaque owner */
56};
57
58struct shrlocklist {
59	struct shrlock *shr;
60	struct shrlocklist *next;
61};
62
63#if defined(_KERNEL)
64struct flock64;
65
66extern int add_share(struct vnode *, struct shrlock *);
67extern int del_share(struct vnode *, struct shrlock *);
68extern void cleanshares(struct vnode *, pid_t);
69extern int shr_has_remote_shares(vnode_t *, int32_t);
70extern int proc_has_nbmand_share_on_vp(vnode_t *, pid_t);
71#endif /* _KERNEL */
72
73#ifdef	__cplusplus
74}
75#endif
76
77#endif /* _SYS_SHARE_H */
78