2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
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34 #include <sys/endian.h>
36 #define G_CONCAT_CLASS_NAME "CONCAT"
38 #define G_CONCAT_MAGIC "GEOM::CONCAT"
41 * 1 - Initial version number.
42 * 2 - Added 'stop' command to gconcat(8).
43 * 3 - Added md_provider field to metadata and '-h' option to gconcat(8).
44 * 4 - Added md_provsize field to metadata.
46 #define G_CONCAT_VERSION 4
49 #define G_CONCAT_TYPE_MANUAL 0
50 #define G_CONCAT_TYPE_AUTOMATIC 1
52 #define G_CONCAT_DEBUG(lvl, ...) \
53 _GEOM_DEBUG("GEOM_CONCAT", g_concat_debug, (lvl), NULL, __VA_ARGS__)
54 #define G_CONCAT_LOGREQ(bp, ...) \
55 _GEOM_DEBUG("GEOM_CONCAT", g_concat_debug, 2, (bp), __VA_ARGS__)
57 struct g_concat_disk {
58 struct g_consumer *d_consumer;
59 struct g_concat_softc *d_softc;
66 struct g_concat_softc {
67 u_int sc_type; /* provider type */
68 struct g_geom *sc_geom;
69 struct g_provider *sc_provider;
70 uint32_t sc_id; /* concat unique ID */
72 struct g_concat_disk *sc_disks;
76 #define sc_name sc_geom->name
79 struct g_concat_metadata {
80 char md_magic[16]; /* Magic value. */
81 uint32_t md_version; /* Version number. */
82 char md_name[16]; /* Concat name. */
83 uint32_t md_id; /* Unique ID. */
84 uint16_t md_no; /* Disk number. */
85 uint16_t md_all; /* Number of all disks. */
86 char md_provider[16]; /* Hardcoded provider. */
87 uint64_t md_provsize; /* Provider's size. */
90 concat_metadata_encode(const struct g_concat_metadata *md, u_char *data)
93 bcopy(md->md_magic, data, sizeof(md->md_magic));
94 le32enc(data + 16, md->md_version);
95 bcopy(md->md_name, data + 20, sizeof(md->md_name));
96 le32enc(data + 36, md->md_id);
97 le16enc(data + 40, md->md_no);
98 le16enc(data + 42, md->md_all);
99 bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
100 le64enc(data + 60, md->md_provsize);
103 concat_metadata_decode(const u_char *data, struct g_concat_metadata *md)
106 bcopy(data, md->md_magic, sizeof(md->md_magic));
107 md->md_version = le32dec(data + 16);
108 bcopy(data + 20, md->md_name, sizeof(md->md_name));
109 md->md_id = le32dec(data + 36);
110 md->md_no = le16dec(data + 40);
111 md->md_all = le16dec(data + 42);
112 bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
113 md->md_provsize = le64dec(data + 60);
115 #endif /* _G_CONCAT_H_ */