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 * $FreeBSD$
32 */
33
34#ifndef _GEOM_GEOM_CTL_H_
35#define _GEOM_GEOM_CTL_H_
36
37#include <sys/ioccom.h>
38
39/*
40 * Version number.  Used to check consistency between kernel and libgeom.
41 */
42#define GCTL_VERSION	2
43
44struct gctl_req_arg {
45	u_int				nlen;
46	char				*name;
47	off_t				offset;
48	int				flag;
49	int				len;
50	void				*value;
51	/* kernel only fields */
52	void				*kvalue;
53};
54
55#define GCTL_PARAM_RD		1	/* Must match VM_PROT_READ */
56#define GCTL_PARAM_WR		2	/* Must match VM_PROT_WRITE */
57#define GCTL_PARAM_RW		(GCTL_PARAM_RD | GCTL_PARAM_WR)
58#define GCTL_PARAM_ASCII	4
59
60/* These are used in the kernel only */
61#define GCTL_PARAM_NAMEKERNEL	8
62#define GCTL_PARAM_VALUEKERNEL	16
63#define GCTL_PARAM_CHANGED	32
64
65struct gctl_req {
66	u_int				version;
67	u_int				serial;
68	u_int				narg;
69	struct gctl_req_arg		*arg;
70	u_int				lerror;
71	char				*error;
72	struct gctl_req_table		*reqt;
73
74	/* kernel only fields */
75	int				nerror;
76	struct sbuf			*serror;
77};
78
79#define GEOM_CTL	_IOW('G', GCTL_VERSION, struct gctl_req)
80
81#define GEOM_CTL_ARG_MAX 2048	/* maximum number of parameters */
82
83#define PATH_GEOM_CTL	"geom.ctl"
84
85#endif /* _GEOM_GEOM_CTL_H_ */
86