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g_stripe.c
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g_stripe.h
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Editing: g_stripe.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * 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. * * $FreeBSD$ */ #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_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; }; #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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