xref: /freebsd/sys/geom/linux_lvm/g_linux_lvm.h (revision 61e21613)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2008 Andrew Thompson <thompsa@FreeBSD.org>
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  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #define	G_LLVM_DEBUG(lvl, ...) \
30     _GEOM_DEBUG("GEOM_LINUX_LVM", g_llvm_debug, (lvl), NULL, __VA_ARGS__)
31 
32 #define	G_LLVM_CLASS_NAME	"LINUX_LVM"
33 #define	G_LLVM_NAMELEN		128
34 #define	G_LLVM_UUIDLEN		40
35 #define	G_LLVM_MAGIC		"\040\114\126\115\062\040\170\133" \
36 				"\065\101\045\162\060\116\052\076"
37 
38 struct g_llvm_label {
39 	uint64_t	ll_sector;
40 	uint32_t	ll_crc;
41 	uint32_t	ll_offset;
42 	char		ll_uuid[G_LLVM_UUIDLEN];
43 	uint64_t	ll_size;
44 	uint64_t	ll_pestart;
45 	uint64_t	ll_md_offset;
46 	uint64_t	ll_md_size;
47 };
48 
49 struct g_llvm_metadata {
50 	uint32_t		md_csum;
51 	uint32_t		md_version;
52 	uint64_t		md_start;
53 	uint64_t		md_size;
54 	uint64_t		md_reloffset;
55 	uint64_t		md_relsize;
56 	struct g_llvm_vg	*md_vg;
57 };
58 
59 struct g_llvm_lv {
60 	LIST_ENTRY(g_llvm_lv)	lv_next;
61 	struct g_llvm_vg	*lv_vg;
62 	char			lv_name[G_LLVM_NAMELEN];
63 	char			lv_uuid[G_LLVM_UUIDLEN];
64 	int			lv_sgcount;
65 	int			lv_sgactive;
66 	struct g_provider	*lv_gprov;
67 	int			lv_extentcount;
68 	LIST_HEAD(, g_llvm_segment) lv_segs;
69 	int			lv_numsegs;
70 	struct g_llvm_segment	*lv_firstsg;
71 };
72 
73 struct g_llvm_pv {
74 	LIST_ENTRY(g_llvm_pv)	pv_next;
75 	struct g_llvm_vg	*pv_vg;
76 	char			pv_name[G_LLVM_NAMELEN];
77 	char			pv_uuid[G_LLVM_UUIDLEN];
78 	size_t			pv_size;
79 	off_t			pv_start;
80 	int			pv_count;
81 	struct g_provider	*pv_gprov;
82 	struct g_consumer	*pv_gcons;
83 };
84 
85 struct g_llvm_segment {
86 	LIST_ENTRY(g_llvm_segment)	sg_next;
87 	int			sg_start;
88 	int			sg_end;
89 	int			sg_count;
90 	char			sg_pvname[G_LLVM_NAMELEN];
91 	struct g_llvm_pv	*sg_pv;
92 	int			sg_pvstart;
93 	off_t			sg_pvoffset;
94 };
95 
96 struct g_llvm_vg {
97 	LIST_ENTRY(g_llvm_vg)	vg_next;
98 	char			vg_name[G_LLVM_NAMELEN];
99 	char			vg_uuid[G_LLVM_UUIDLEN];
100 	size_t			vg_extentsize;
101 	int			vg_sectorsize;
102 	struct g_geom		*vg_geom;
103 	LIST_HEAD(, g_llvm_pv)	vg_pvs;
104 	LIST_HEAD(, g_llvm_lv)	vg_lvs;
105 };
106