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, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef	_SYS_WINLOCKIO_H
28#define	_SYS_WINLOCKIO_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#include <sys/types.h>
33#include <sys/ioccom.h>
34
35#ifdef	__cplusplus
36extern "C" {
37#endif
38
39/*
40 * Structure for allocating lock contexts.
41 * The page number portion of sy_ident is the offset for mmap(2).
42 * The page offset portion of sy_ident is the byte-offset relative to
43 * the start of the page returned by mmap(2) and should added to it.
44 */
45
46struct	winlockalloc {
47	uint_t	sy_key;		/* user-provided key, if any */
48	uint_t	sy_ident;	/* system-provided identification */
49};
50
51/*
52 * Structure for getting and setting lock timeouts or NOTIMEOUT flag
53 */
54
55struct	winlocktimeout {
56	uint_t	sy_ident;	/* system-provided identification */
57	uint_t	sy_timeout;	/* timeout value in seconds */
58	int	sy_flags;	/* Flags for lock context - see defs below */
59};
60
61#define	WIOC	('L'<<8)
62
63
64#define	WINLOCKALLOC		(WIOC|0)
65#define	WINLOCKFREE		(WIOC|1)
66#define	WINLOCKSETTIMEOUT	(WIOC|2)
67#define	WINLOCKGETTIMEOUT	(WIOC|3)
68#define	WINLOCKDUMP		(WIOC|4)
69
70#ifndef GRABPAGEALLOC
71#include <sys/fbio.h>		/* defines GRAB* ioctls */
72#endif
73
74/* flag bits */
75#define	SY_NOTIMEOUT	0x1	/* This client never times out */
76
77#ifdef	_KERNEL
78
79#define	UFLAGS		0x00ff	/* flags usable by users */
80#define	KFLAGS		0xff00	/* flags used by driver implementation */
81#define	TRASHPAGE	0x0400	/* process has unlock mapping to trashpage */
82
83#endif	/* _KERNEL */
84
85#ifdef	__cplusplus
86}
87#endif
88
89#endif	/* _SYS_WINLOCKIO_H */
90