6d305ab0b2
GEOM's stripeoffset overflows at 4 gigabyte margin (2^32) because of its u_int type. This leads to incorrect data in the output generated by "sysctl kern.geom.confxml" command, "graid list" etc. when GEOM array has volumes larger than 4G, for example. This change does not affect ABI but changes KBI. No MFC planned. Differential Revision: https://reviews.freebsd.org/D13426
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _G_STRIPE_H_
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#define _G_STRIPE_H_
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#include <sys/endian.h>
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#define G_STRIPE_CLASS_NAME "STRIPE"
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#define G_STRIPE_MAGIC "GEOM::STRIPE"
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/*
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* Version history:
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* 0 - Initial version number.
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* 1 - Added 'stop' command for gstripe(8).
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* 2 - Added md_provider field to metadata and '-h' option for gstripe(8).
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* 3 - Added md_provsize field to metadata.
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*/
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#define G_STRIPE_VERSION 3
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#ifdef _KERNEL
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#define G_STRIPE_TYPE_MANUAL 0
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#define G_STRIPE_TYPE_AUTOMATIC 1
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#define G_STRIPE_DEBUG(lvl, ...) do { \
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if (g_stripe_debug >= (lvl)) { \
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printf("GEOM_STRIPE"); \
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if (g_stripe_debug > 0) \
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printf("[%u]", lvl); \
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printf(": "); \
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printf(__VA_ARGS__); \
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printf("\n"); \
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} \
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} while (0)
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#define G_STRIPE_LOGREQ(bp, ...) do { \
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if (g_stripe_debug >= 2) { \
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printf("GEOM_STRIPE[2]: "); \
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printf(__VA_ARGS__); \
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printf(" "); \
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g_print_bio(bp); \
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printf("\n"); \
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} \
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} while (0)
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struct g_stripe_softc {
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u_int sc_type; /* provider type */
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struct g_geom *sc_geom;
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struct g_provider *sc_provider;
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uint32_t sc_id; /* stripe unique ID */
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struct g_consumer **sc_disks;
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uint16_t sc_ndisks;
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off_t sc_stripesize;
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uint32_t sc_stripebits;
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struct mtx sc_lock;
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};
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#define sc_name sc_geom->name
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#endif /* _KERNEL */
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struct g_stripe_metadata {
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char md_magic[16]; /* Magic value. */
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uint32_t md_version; /* Version number. */
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char md_name[16]; /* Stripe name. */
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uint32_t md_id; /* Unique ID. */
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uint16_t md_no; /* Disk number. */
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uint16_t md_all; /* Number of all disks. */
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uint32_t md_stripesize; /* Stripe size. */
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char md_provider[16]; /* Hardcoded provider. */
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uint64_t md_provsize; /* Provider's size. */
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};
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static __inline void
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stripe_metadata_encode(const struct g_stripe_metadata *md, u_char *data)
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{
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bcopy(md->md_magic, data, sizeof(md->md_magic));
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le32enc(data + 16, md->md_version);
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bcopy(md->md_name, data + 20, sizeof(md->md_name));
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le32enc(data + 36, md->md_id);
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le16enc(data + 40, md->md_no);
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le16enc(data + 42, md->md_all);
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le32enc(data + 44, md->md_stripesize);
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bcopy(md->md_provider, data + 48, sizeof(md->md_provider));
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le64enc(data + 64, md->md_provsize);
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}
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static __inline void
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stripe_metadata_decode(const u_char *data, struct g_stripe_metadata *md)
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{
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bcopy(data, md->md_magic, sizeof(md->md_magic));
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md->md_version = le32dec(data + 16);
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bcopy(data + 20, md->md_name, sizeof(md->md_name));
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md->md_id = le32dec(data + 36);
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md->md_no = le16dec(data + 40);
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md->md_all = le16dec(data + 42);
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md->md_stripesize = le32dec(data + 44);
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bcopy(data + 48, md->md_provider, sizeof(md->md_provider));
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md->md_provsize = le64dec(data + 64);
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}
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#endif /* _G_STRIPE_H_ */
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