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/*-
* Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _G_CONCAT_H_
#define _G_CONCAT_H_
#include <sys/endian.h>
#define G_CONCAT_CLASS_NAME "CONCAT"
#define G_CONCAT_MAGIC "GEOM::CONCAT"
#define G_CONCAT_VERSION 0
#ifdef _KERNEL
#define G_CONCAT_TYPE_MANUAL 0
#define G_CONCAT_TYPE_AUTOMATIC 1
#define G_CONCAT_DEBUG(lvl, ...) do { \
if (g_concat_debug >= (lvl)) { \
printf("GEOM_CONCAT[%u]: ", lvl); \
printf(__VA_ARGS__); \
printf("\n"); \
} \
} while (0)
#define G_CONCAT_LOGREQ(bp, ...) do { \
if (g_concat_debug >= 2) { \
printf("GEOM_CONCAT[2]: "); \
printf(__VA_ARGS__); \
printf(" "); \
g_print_bio(bp); \
printf("\n"); \
} \
} while (0)
struct g_concat_disk {
struct g_consumer *d_consumer;
struct g_concat_softc *d_softc;
off_t d_start;
off_t d_end;
};
struct g_concat_softc {
u_int sc_type; /* provider type */
struct g_provider *sc_provider;
char sc_name[16]; /* concat name */
uint32_t sc_id; /* concat unique ID */
struct g_concat_disk *sc_disks;
uint16_t sc_ndisks;
};
#endif /* _KERNEL */
struct g_concat_metadata {
char md_magic[16]; /* Magic value. */
uint32_t md_version; /* Version number. */
char md_name[16]; /* Concat name. */
uint32_t md_id; /* Unique ID. */
uint16_t md_no; /* Disk number. */
uint16_t md_all; /* Number of all disks. */
};
static __inline void
concat_metadata_encode(const struct g_concat_metadata *md, u_char *data)
{
bcopy(md->md_magic, data, sizeof(md->md_magic));
le32enc(data + 16, md->md_version);
bcopy(md->md_name, data + 20, sizeof(md->md_name));
le32enc(data + 36, md->md_id);
le16enc(data + 40, md->md_no);
le16enc(data + 42, md->md_all);
}
static __inline void
concat_metadata_decode(const u_char *data, struct g_concat_metadata *md)
{
bcopy(data, md->md_magic, sizeof(md->md_magic));
md->md_version = le32dec(data + 16);
bcopy(data + 20, md->md_name, sizeof(md->md_name));
md->md_id = le32dec(data + 36);
md->md_no = le16dec(data + 40);
md->md_all = le16dec(data + 42);
}
#endif /* _G_CONCAT_H_ */
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