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 _RCAPD_RFD_H
28#define	_RCAPD_RFD_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36#include <sys/types.h>
37#include "rcapd.h"
38
39/*
40 * Classes of cached, revocable file descriptors
41 */
42typedef enum {
43	RFD_PAGEDATA = 1,	/* pagedata is always preferred over psinfo */
44	RFD_PSINFO,		/* psinfo, at least one of which is */
45				/* cached at any time */
46	RFD_XMAP,		/* xmap */
47	RFD_RESERVED		/* opened for use by external consumers */
48} rfd_class_t;
49
50/*
51 * Revocable file descriptor
52 */
53typedef struct rfd {
54	int rfd_fd;				/* cached descriptor */
55	rfd_class_t rfd_class;			/* class of descriptor */
56	void(*rfd_revoke)(struct rfd *);	/* revocation function */
57	void *rfd_data;				/* supplied data */
58
59	struct rfd *rfd_next;			/* list */
60	struct rfd *rfd_prev;
61
62	struct rfd *rfd_prev_class;		/* link to previous of same */
63						/* class */
64} rfd_t;
65
66int rfd_close(int);
67int rfd_open(char *, int, rfd_class_t, void(*)(struct rfd *), void *, int,
68    mode_t);
69int rfd_reserve(int);
70
71#ifdef	__cplusplus
72}
73#endif
74
75#endif /* _RCAPD_RFD_H */
76