1/*-
 2 * SPDX-License-Identifier: BSD-3-Clause
 3 *
 4 * Copyright (c) 2003 Poul-Henning Kamp
 5 * All rights reserved.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The names of the authors may not be used to endorse or promote
16 *    products derived from this software without specific prior written
17 *    permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#ifndef _GEOM_GEOM_CTL_H_
33#define _GEOM_GEOM_CTL_H_
34
35#include <sys/ioccom.h>
36
37/*
38 * Version number.  Used to check consistency between kernel and libgeom.
39 */
40#define GCTL_VERSION	2
41
42struct gctl_req_arg {
43	u_int				nlen;
44	char				*name;
45	off_t				offset;
46	int				flag;
47	int				len;
48	void				*value;
49	/* kernel only fields */
50	void				*kvalue;
51};
52
53#define GCTL_PARAM_RD		1	/* Must match VM_PROT_READ */
54#define GCTL_PARAM_WR		2	/* Must match VM_PROT_WRITE */
55#define GCTL_PARAM_RW		(GCTL_PARAM_RD | GCTL_PARAM_WR)
56#define GCTL_PARAM_ASCII	4
57
58/* These are used in the kernel only */
59#define GCTL_PARAM_NAMEKERNEL	8
60#define GCTL_PARAM_VALUEKERNEL	16
61#define GCTL_PARAM_CHANGED	32
62
63struct gctl_req {
64	u_int				version;
65	u_int				serial;
66	u_int				narg;
67	struct gctl_req_arg		*arg;
68	u_int				lerror;
69	char				*error;
70	struct gctl_req_table		*reqt;
71
72	/* kernel only fields */
73	int				nerror;
74	struct sbuf			*serror;
75};
76
77#define GEOM_CTL	_IOW('G', GCTL_VERSION, struct gctl_req)
78
79#define GEOM_CTL_ARG_MAX 2048	/* maximum number of parameters */
80
81#define PATH_GEOM_CTL	"geom.ctl"
82
83#endif /* _GEOM_GEOM_CTL_H_ */