118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 2005 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_SHSEC_H_
|
|
#define _G_SHSEC_H_
|
|
|
|
#include <sys/endian.h>
|
|
|
|
#define G_SHSEC_CLASS_NAME "SHSEC"
|
|
|
|
#define G_SHSEC_MAGIC "GEOM::SHSEC"
|
|
/*
|
|
* Version history:
|
|
* 0 - Initial version number.
|
|
* 1 - Added md_provsize field to metadata.
|
|
*/
|
|
#define G_SHSEC_VERSION 1
|
|
|
|
#ifdef _KERNEL
|
|
#define G_SHSEC_BFLAG_FIRST 0x1
|
|
|
|
#define G_SHSEC_DEBUG(lvl, ...) do { \
|
|
if (g_shsec_debug >= (lvl)) { \
|
|
printf("GEOM_SHSEC"); \
|
|
if (g_shsec_debug > 0) \
|
|
printf("[%u]", lvl); \
|
|
printf(": "); \
|
|
printf(__VA_ARGS__); \
|
|
printf("\n"); \
|
|
} \
|
|
} while (0)
|
|
#define G_SHSEC_LOGREQ(lvl, bp, ...) do { \
|
|
if (g_shsec_debug >= (lvl)) { \
|
|
printf("GEOM_SHSEC"); \
|
|
if (g_shsec_debug > 0) \
|
|
printf("[%u]", lvl); \
|
|
printf(": "); \
|
|
printf(__VA_ARGS__); \
|
|
printf(" "); \
|
|
g_print_bio(bp); \
|
|
printf("\n"); \
|
|
} \
|
|
} while (0)
|
|
|
|
struct g_shsec_softc {
|
|
u_int sc_type; /* provider type */
|
|
struct g_geom *sc_geom;
|
|
struct g_provider *sc_provider;
|
|
uint32_t sc_id; /* device unique ID */
|
|
struct g_consumer **sc_disks;
|
|
uint16_t sc_ndisks;
|
|
};
|
|
#define sc_name sc_geom->name
|
|
#endif /* _KERNEL */
|
|
|
|
struct g_shsec_metadata {
|
|
char md_magic[16]; /* Magic value. */
|
|
uint32_t md_version; /* Version number. */
|
|
char md_name[16]; /* Stripe name. */
|
|
uint32_t md_id; /* Unique ID. */
|
|
uint16_t md_no; /* Disk number. */
|
|
uint16_t md_all; /* Number of all disks. */
|
|
char md_provider[16]; /* Hardcoded provider. */
|
|
uint64_t md_provsize; /* Provider's size. */
|
|
};
|
|
static __inline void
|
|
shsec_metadata_encode(const struct g_shsec_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);
|
|
bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
|
|
le64enc(data + 60, md->md_provsize);
|
|
}
|
|
static __inline void
|
|
shsec_metadata_decode(const u_char *data, struct g_shsec_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);
|
|
bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
|
|
md->md_provsize = le64dec(data + 60);
|
|
}
|
|
#endif /* _G_SHSEC_H_ */
|