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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2004-2005 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.
*/
#ifndef _G_STRIPE_H_
#define _G_STRIPE_H_
#include <sys/endian.h>
#define G_STRIPE_CLASS_NAME "STRIPE"
#define G_STRIPE_MAGIC "GEOM::STRIPE"
/*
* Version history:
* 0 - Initial version number.
* 1 - Added 'stop' command for gstripe(8).
* 2 - Added md_provider field to metadata and '-h' option for gstripe(8).
* 3 - Added md_provsize field to metadata.
*/
#define G_STRIPE_VERSION 3
#ifdef _KERNEL
#define G_STRIPE_TYPE_MANUAL 0
#define G_STRIPE_TYPE_AUTOMATIC 1
#define G_STRIPE_FLAG_CANDELETE 0x00000001UL
#define G_STRIPE_DEBUG(lvl, ...) \
_GEOM_DEBUG("GEOM_STRIPE", g_stripe_debug, (lvl), NULL, __VA_ARGS__)
#define G_STRIPE_LOGREQ(bp, ...) \
_GEOM_DEBUG("GEOM_STRIPE", g_stripe_debug, 2, (bp), __VA_ARGS__)
struct g_stripe_softc {
u_int sc_type; /* provider type */
struct g_geom *sc_geom;
struct g_provider *sc_provider;
uint32_t sc_id; /* stripe unique ID */
struct g_consumer **sc_disks;
uint16_t sc_ndisks;
off_t sc_stripesize;
uint32_t sc_stripebits;
struct mtx sc_lock;
int sc_flags;
};
#define sc_name sc_geom->name
#endif /* _KERNEL */
struct g_stripe_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. */
uint32_t md_stripesize; /* Stripe size. */
char md_provider[16]; /* Hardcoded provider. */
uint64_t md_provsize; /* Provider's size. */
};
static __inline void
stripe_metadata_encode(const struct g_stripe_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);
le32enc(data + 44, md->md_stripesize);
bcopy(md->md_provider, data + 48, sizeof(md->md_provider));
le64enc(data + 64, md->md_provsize);
}
static __inline void
stripe_metadata_decode(const u_char *data, struct g_stripe_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);
md->md_stripesize = le32dec(data + 44);
bcopy(data + 48, md->md_provider, sizeof(md->md_provider));
md->md_provsize = le64dec(data + 64);
}
#endif /* _G_STRIPE_H_ */
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