12d1661a5SPawel Jakub Dawidek /*-
24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
33728855aSPedro F. Giffuni *
49bfdf598SPawel Jakub Dawidek * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
52d1661a5SPawel Jakub Dawidek * All rights reserved.
62d1661a5SPawel Jakub Dawidek *
72d1661a5SPawel Jakub Dawidek * Redistribution and use in source and binary forms, with or without
82d1661a5SPawel Jakub Dawidek * modification, are permitted provided that the following conditions
92d1661a5SPawel Jakub Dawidek * are met:
102d1661a5SPawel Jakub Dawidek * 1. Redistributions of source code must retain the above copyright
112d1661a5SPawel Jakub Dawidek * notice, this list of conditions and the following disclaimer.
122d1661a5SPawel Jakub Dawidek * 2. Redistributions in binary form must reproduce the above copyright
132d1661a5SPawel Jakub Dawidek * notice, this list of conditions and the following disclaimer in the
142d1661a5SPawel Jakub Dawidek * documentation and/or other materials provided with the distribution.
152d1661a5SPawel Jakub Dawidek *
162d1661a5SPawel Jakub Dawidek * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
172d1661a5SPawel Jakub Dawidek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
182d1661a5SPawel Jakub Dawidek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
192d1661a5SPawel Jakub Dawidek * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
202d1661a5SPawel Jakub Dawidek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
212d1661a5SPawel Jakub Dawidek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
222d1661a5SPawel Jakub Dawidek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
232d1661a5SPawel Jakub Dawidek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
242d1661a5SPawel Jakub Dawidek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
252d1661a5SPawel Jakub Dawidek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
262d1661a5SPawel Jakub Dawidek * SUCH DAMAGE.
272d1661a5SPawel Jakub Dawidek */
282d1661a5SPawel Jakub Dawidek
292d1661a5SPawel Jakub Dawidek #ifndef _G_RAID3_H_
302d1661a5SPawel Jakub Dawidek #define _G_RAID3_H_
312d1661a5SPawel Jakub Dawidek
322d1661a5SPawel Jakub Dawidek #include <sys/endian.h>
332d1661a5SPawel Jakub Dawidek #include <sys/md5.h>
342d1661a5SPawel Jakub Dawidek
352d1661a5SPawel Jakub Dawidek #define G_RAID3_CLASS_NAME "RAID3"
362d1661a5SPawel Jakub Dawidek
372d1661a5SPawel Jakub Dawidek #define G_RAID3_MAGIC "GEOM::RAID3"
38d12bd83eSPawel Jakub Dawidek /*
39d12bd83eSPawel Jakub Dawidek * Version history:
40d12bd83eSPawel Jakub Dawidek * 0 - Initial version number.
41d12bd83eSPawel Jakub Dawidek * 1 - Added 'round-robin reading' algorithm.
42dba915cfSPawel Jakub Dawidek * 2 - Added 'verify reading' algorithm.
43a245a548SPawel Jakub Dawidek * 3 - Added md_genid field to metadata.
44e6890985SPawel Jakub Dawidek * 4 - Added md_provsize field to metadata.
45501250baSPawel Jakub Dawidek * 5 - Added 'no failure synchronization' flag.
46d12bd83eSPawel Jakub Dawidek */
47501250baSPawel Jakub Dawidek #define G_RAID3_VERSION 5
482d1661a5SPawel Jakub Dawidek
492d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_FLAG_DIRTY 0x0000000000000001ULL
502d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_FLAG_SYNCHRONIZING 0x0000000000000002ULL
512d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_FLAG_FORCE_SYNC 0x0000000000000004ULL
522d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_FLAG_HARDCODED 0x0000000000000008ULL
533aae74ecSPawel Jakub Dawidek #define G_RAID3_DISK_FLAG_BROKEN 0x0000000000000010ULL
542d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_FLAG_MASK (G_RAID3_DISK_FLAG_DIRTY | \
552d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING | \
562d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC)
572d1661a5SPawel Jakub Dawidek
582d1661a5SPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL
59f5a2f7feSPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_ROUND_ROBIN 0x0000000000000002ULL
60dba915cfSPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_VERIFY 0x0000000000000004ULL
61501250baSPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_NOFAILSYNC 0x0000000000000008ULL
62f5a2f7feSPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_MASK (G_RAID3_DEVICE_FLAG_NOAUTOSYNC | \
63dba915cfSPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_ROUND_ROBIN | \
64501250baSPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_VERIFY | \
65501250baSPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOFAILSYNC)
662d1661a5SPawel Jakub Dawidek
672d1661a5SPawel Jakub Dawidek #ifdef _KERNEL
682d1661a5SPawel Jakub Dawidek extern u_int g_raid3_debug;
692d1661a5SPawel Jakub Dawidek
70ac03832eSConrad Meyer #define G_RAID3_DEBUG(lvl, ...) \
71ac03832eSConrad Meyer _GEOM_DEBUG("GEOM_RAID3", g_raid3_debug, (lvl), NULL, __VA_ARGS__)
72ac03832eSConrad Meyer #define G_RAID3_LOGREQ(lvl, bp, ...) \
73ac03832eSConrad Meyer _GEOM_DEBUG("GEOM_RAID3", g_raid3_debug, (lvl), (bp), __VA_ARGS__)
742d1661a5SPawel Jakub Dawidek
752d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_CFLAG_REGULAR 0x01
762d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_CFLAG_SYNC 0x02
772d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_CFLAG_PARITY 0x04
782d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_CFLAG_NODISK 0x08
792d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_CFLAG_REGSYNC 0x10
80dba915cfSPawel Jakub Dawidek #define G_RAID3_BIO_CFLAG_MASK (G_RAID3_BIO_CFLAG_REGULAR | \
81dba915cfSPawel Jakub Dawidek G_RAID3_BIO_CFLAG_SYNC | \
82dba915cfSPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY | \
83dba915cfSPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK | \
84dba915cfSPawel Jakub Dawidek G_RAID3_BIO_CFLAG_REGSYNC)
852d1661a5SPawel Jakub Dawidek
862d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_PFLAG_DEGRADED 0x01
872d1661a5SPawel Jakub Dawidek #define G_RAID3_BIO_PFLAG_NOPARITY 0x02
88dba915cfSPawel Jakub Dawidek #define G_RAID3_BIO_PFLAG_VERIFY 0x04
89dba915cfSPawel Jakub Dawidek #define G_RAID3_BIO_PFLAG_MASK (G_RAID3_BIO_PFLAG_DEGRADED | \
90dba915cfSPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY | \
91dba915cfSPawel Jakub Dawidek G_RAID3_BIO_PFLAG_VERIFY)
922d1661a5SPawel Jakub Dawidek
932d1661a5SPawel Jakub Dawidek /*
942d1661a5SPawel Jakub Dawidek * Informations needed for synchronization.
952d1661a5SPawel Jakub Dawidek */
962d1661a5SPawel Jakub Dawidek struct g_raid3_disk_sync {
972d1661a5SPawel Jakub Dawidek struct g_consumer *ds_consumer; /* Consumer connected to our device. */
982d1661a5SPawel Jakub Dawidek off_t ds_offset; /* Offset of next request to send. */
992d1661a5SPawel Jakub Dawidek off_t ds_offset_done; /* Offset of already synchronized
1002d1661a5SPawel Jakub Dawidek region. */
101d2fb9c62SPawel Jakub Dawidek off_t ds_resync; /* Resynchronize from this offset. */
1022d1661a5SPawel Jakub Dawidek u_int ds_syncid; /* Disk's synchronization ID. */
1033650be51SPawel Jakub Dawidek u_int ds_inflight; /* Number of in-flight sync requests. */
1043650be51SPawel Jakub Dawidek struct bio **ds_bios; /* BIOs for synchronization I/O. */
1052d1661a5SPawel Jakub Dawidek };
1062d1661a5SPawel Jakub Dawidek
1072d1661a5SPawel Jakub Dawidek /*
1082d1661a5SPawel Jakub Dawidek * Informations needed for synchronization.
1092d1661a5SPawel Jakub Dawidek */
1102d1661a5SPawel Jakub Dawidek struct g_raid3_device_sync {
1112d1661a5SPawel Jakub Dawidek struct g_geom *ds_geom; /* Synchronization geom. */
1122d1661a5SPawel Jakub Dawidek };
1132d1661a5SPawel Jakub Dawidek
1142d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_NODISK 0
1152d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_NONE 1
1162d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_NEW 2
1172d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_ACTIVE 3
1182d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_STALE 4
1192d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_SYNCHRONIZING 5
1202d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_DISCONNECTED 6
1212d1661a5SPawel Jakub Dawidek #define G_RAID3_DISK_STATE_DESTROY 7
1222d1661a5SPawel Jakub Dawidek struct g_raid3_disk {
1232d1661a5SPawel Jakub Dawidek u_int d_no; /* Disk number. */
1242d1661a5SPawel Jakub Dawidek struct g_consumer *d_consumer; /* Consumer. */
1252d1661a5SPawel Jakub Dawidek struct g_raid3_softc *d_softc; /* Back-pointer to softc. */
1262d1661a5SPawel Jakub Dawidek int d_state; /* Disk state. */
1272d1661a5SPawel Jakub Dawidek uint64_t d_flags; /* Additional flags. */
128a245a548SPawel Jakub Dawidek u_int d_genid; /* Disk's generation ID. */
1292d1661a5SPawel Jakub Dawidek struct g_raid3_disk_sync d_sync; /* Sync information. */
1302d1661a5SPawel Jakub Dawidek LIST_ENTRY(g_raid3_disk) d_next;
1312d1661a5SPawel Jakub Dawidek };
1322d1661a5SPawel Jakub Dawidek #define d_name d_consumer->provider->name
1332d1661a5SPawel Jakub Dawidek
1342d1661a5SPawel Jakub Dawidek #define G_RAID3_EVENT_DONTWAIT 0x1
1352d1661a5SPawel Jakub Dawidek #define G_RAID3_EVENT_WAIT 0x2
1362d1661a5SPawel Jakub Dawidek #define G_RAID3_EVENT_DEVICE 0x4
1372d1661a5SPawel Jakub Dawidek #define G_RAID3_EVENT_DONE 0x8
1382d1661a5SPawel Jakub Dawidek struct g_raid3_event {
1392d1661a5SPawel Jakub Dawidek struct g_raid3_disk *e_disk;
1402d1661a5SPawel Jakub Dawidek int e_state;
1412d1661a5SPawel Jakub Dawidek int e_flags;
1422d1661a5SPawel Jakub Dawidek int e_error;
1432d1661a5SPawel Jakub Dawidek TAILQ_ENTRY(g_raid3_event) e_next;
1442d1661a5SPawel Jakub Dawidek };
1452d1661a5SPawel Jakub Dawidek
1462d1661a5SPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_DESTROY 0x0100000000000000ULL
1472d1661a5SPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_WAIT 0x0200000000000000ULL
148712fe9bdSPawel Jakub Dawidek #define G_RAID3_DEVICE_FLAG_DESTROYING 0x0400000000000000ULL
1492d1661a5SPawel Jakub Dawidek
1502d1661a5SPawel Jakub Dawidek #define G_RAID3_DEVICE_STATE_STARTING 0
1512d1661a5SPawel Jakub Dawidek #define G_RAID3_DEVICE_STATE_DEGRADED 1
1522d1661a5SPawel Jakub Dawidek #define G_RAID3_DEVICE_STATE_COMPLETE 2
1532d1661a5SPawel Jakub Dawidek
154a245a548SPawel Jakub Dawidek /* Bump syncid on first write. */
155ea973705SPawel Jakub Dawidek #define G_RAID3_BUMP_SYNCID 0x1
156a245a548SPawel Jakub Dawidek /* Bump genid immediately. */
157ea973705SPawel Jakub Dawidek #define G_RAID3_BUMP_GENID 0x2
1582d1661a5SPawel Jakub Dawidek
1593650be51SPawel Jakub Dawidek enum g_raid3_zones {
1603650be51SPawel Jakub Dawidek G_RAID3_ZONE_64K,
1613650be51SPawel Jakub Dawidek G_RAID3_ZONE_16K,
1623650be51SPawel Jakub Dawidek G_RAID3_ZONE_4K,
1633650be51SPawel Jakub Dawidek G_RAID3_NUM_ZONES
1643650be51SPawel Jakub Dawidek };
1653650be51SPawel Jakub Dawidek
1663650be51SPawel Jakub Dawidek static __inline enum g_raid3_zones
g_raid3_zone(size_t nbytes)1673650be51SPawel Jakub Dawidek g_raid3_zone(size_t nbytes) {
168d4060fa6SAlexander Motin if (nbytes > 65536)
169d4060fa6SAlexander Motin return (G_RAID3_NUM_ZONES);
170d4060fa6SAlexander Motin else if (nbytes > 16384)
1713650be51SPawel Jakub Dawidek return (G_RAID3_ZONE_64K);
1723650be51SPawel Jakub Dawidek else if (nbytes > 4096)
1733650be51SPawel Jakub Dawidek return (G_RAID3_ZONE_16K);
1743650be51SPawel Jakub Dawidek else
1753650be51SPawel Jakub Dawidek return (G_RAID3_ZONE_4K);
1763650be51SPawel Jakub Dawidek };
1773650be51SPawel Jakub Dawidek
1782d1661a5SPawel Jakub Dawidek struct g_raid3_softc {
1792d1661a5SPawel Jakub Dawidek u_int sc_state; /* Device state. */
1802d1661a5SPawel Jakub Dawidek uint64_t sc_mediasize; /* Device size. */
1812d1661a5SPawel Jakub Dawidek uint32_t sc_sectorsize; /* Sector size. */
1822d1661a5SPawel Jakub Dawidek uint64_t sc_flags; /* Additional flags. */
1832d1661a5SPawel Jakub Dawidek
1842d1661a5SPawel Jakub Dawidek struct g_geom *sc_geom;
1852d1661a5SPawel Jakub Dawidek struct g_provider *sc_provider;
1862d1661a5SPawel Jakub Dawidek
1872d1661a5SPawel Jakub Dawidek uint32_t sc_id; /* Device unique ID. */
1882d1661a5SPawel Jakub Dawidek
1893650be51SPawel Jakub Dawidek struct sx sc_lock;
1902d1661a5SPawel Jakub Dawidek struct bio_queue_head sc_queue;
1912d1661a5SPawel Jakub Dawidek struct mtx sc_queue_mtx;
1922d1661a5SPawel Jakub Dawidek struct proc *sc_worker;
1933650be51SPawel Jakub Dawidek struct bio_queue_head sc_regular_delayed; /* Delayed I/O requests due
1943650be51SPawel Jakub Dawidek collision with sync
1953650be51SPawel Jakub Dawidek requests. */
1963650be51SPawel Jakub Dawidek struct bio_queue_head sc_inflight; /* In-flight regular write
1973650be51SPawel Jakub Dawidek requests. */
1983650be51SPawel Jakub Dawidek struct bio_queue_head sc_sync_delayed; /* Delayed sync requests due
1993650be51SPawel Jakub Dawidek collision with regular
2003650be51SPawel Jakub Dawidek requests. */
2012d1661a5SPawel Jakub Dawidek
2022d1661a5SPawel Jakub Dawidek struct g_raid3_disk *sc_disks;
2032d1661a5SPawel Jakub Dawidek u_int sc_ndisks; /* Number of disks. */
204f5a2f7feSPawel Jakub Dawidek u_int sc_round_robin;
2052d1661a5SPawel Jakub Dawidek struct g_raid3_disk *sc_syncdisk;
2062d1661a5SPawel Jakub Dawidek
2073650be51SPawel Jakub Dawidek struct g_raid3_zone {
2083650be51SPawel Jakub Dawidek uma_zone_t sz_zone;
2093650be51SPawel Jakub Dawidek size_t sz_inuse;
2103650be51SPawel Jakub Dawidek size_t sz_max;
2113650be51SPawel Jakub Dawidek u_int sz_requested;
2123650be51SPawel Jakub Dawidek u_int sz_failed;
2133650be51SPawel Jakub Dawidek } sc_zones[G_RAID3_NUM_ZONES];
2142d1661a5SPawel Jakub Dawidek
215a245a548SPawel Jakub Dawidek u_int sc_genid; /* Generation ID. */
2162d1661a5SPawel Jakub Dawidek u_int sc_syncid; /* Synchronization ID. */
217a245a548SPawel Jakub Dawidek int sc_bump_id;
2182d1661a5SPawel Jakub Dawidek struct g_raid3_device_sync sc_sync;
2194d006a98SPawel Jakub Dawidek int sc_idle; /* DIRTY flags removed. */
2200962f942SPawel Jakub Dawidek time_t sc_last_write;
2210962f942SPawel Jakub Dawidek u_int sc_writes;
22233cb9b3cSMark Johnston u_int sc_refcnt; /* Number of softc references. */
2232d1661a5SPawel Jakub Dawidek
2242d1661a5SPawel Jakub Dawidek TAILQ_HEAD(, g_raid3_event) sc_events;
2252d1661a5SPawel Jakub Dawidek struct mtx sc_events_mtx;
226fd02d0bcSMark Johnston struct g_raid3_event *sc_timeout_event;
2272d1661a5SPawel Jakub Dawidek
2282d1661a5SPawel Jakub Dawidek struct callout sc_callout;
2294ed854e8SPawel Jakub Dawidek
2304ed854e8SPawel Jakub Dawidek struct root_hold_token *sc_rootmount;
2312d1661a5SPawel Jakub Dawidek };
2322d1661a5SPawel Jakub Dawidek #define sc_name sc_geom->name
2332d1661a5SPawel Jakub Dawidek
2342d1661a5SPawel Jakub Dawidek const char *g_raid3_get_diskname(struct g_raid3_disk *disk);
2352d1661a5SPawel Jakub Dawidek u_int g_raid3_ndisks(struct g_raid3_softc *sc, int state);
236712fe9bdSPawel Jakub Dawidek #define G_RAID3_DESTROY_SOFT 0
237712fe9bdSPawel Jakub Dawidek #define G_RAID3_DESTROY_DELAYED 1
238712fe9bdSPawel Jakub Dawidek #define G_RAID3_DESTROY_HARD 2
239712fe9bdSPawel Jakub Dawidek int g_raid3_destroy(struct g_raid3_softc *sc, int how);
2402d1661a5SPawel Jakub Dawidek int g_raid3_event_send(void *arg, int state, int flags);
2412d1661a5SPawel Jakub Dawidek struct g_raid3_metadata;
242ea973705SPawel Jakub Dawidek int g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp,
243ea973705SPawel Jakub Dawidek struct g_raid3_metadata *md);
244ea973705SPawel Jakub Dawidek int g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md);
2452d1661a5SPawel Jakub Dawidek void g_raid3_fill_metadata(struct g_raid3_disk *disk,
2462d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md);
2472d1661a5SPawel Jakub Dawidek int g_raid3_clear_metadata(struct g_raid3_disk *disk);
2482d1661a5SPawel Jakub Dawidek void g_raid3_update_metadata(struct g_raid3_disk *disk);
2492d1661a5SPawel Jakub Dawidek
2502d1661a5SPawel Jakub Dawidek g_ctl_req_t g_raid3_config;
2512d1661a5SPawel Jakub Dawidek #endif /* _KERNEL */
2522d1661a5SPawel Jakub Dawidek
2532d1661a5SPawel Jakub Dawidek struct g_raid3_metadata {
2542d1661a5SPawel Jakub Dawidek char md_magic[16]; /* Magic value. */
2552d1661a5SPawel Jakub Dawidek uint32_t md_version; /* Version number. */
2562d1661a5SPawel Jakub Dawidek char md_name[16]; /* Device name. */
2572d1661a5SPawel Jakub Dawidek uint32_t md_id; /* Device unique ID. */
2582d1661a5SPawel Jakub Dawidek uint16_t md_no; /* Component number. */
2592d1661a5SPawel Jakub Dawidek uint16_t md_all; /* Number of disks in device. */
260a245a548SPawel Jakub Dawidek uint32_t md_genid; /* Generation ID. */
2612d1661a5SPawel Jakub Dawidek uint32_t md_syncid; /* Synchronization ID. */
2622d1661a5SPawel Jakub Dawidek uint64_t md_mediasize; /* Size of whole device. */
2632d1661a5SPawel Jakub Dawidek uint32_t md_sectorsize; /* Sector size. */
2642d1661a5SPawel Jakub Dawidek uint64_t md_sync_offset; /* Synchronized offset. */
2652d1661a5SPawel Jakub Dawidek uint64_t md_mflags; /* Additional device flags. */
2662d1661a5SPawel Jakub Dawidek uint64_t md_dflags; /* Additional disk flags. */
2672d1661a5SPawel Jakub Dawidek char md_provider[16]; /* Hardcoded provider. */
268e6890985SPawel Jakub Dawidek uint64_t md_provsize; /* Provider's size. */
2692d1661a5SPawel Jakub Dawidek u_char md_hash[16]; /* MD5 hash. */
2702d1661a5SPawel Jakub Dawidek };
2712d1661a5SPawel Jakub Dawidek static __inline void
raid3_metadata_encode(struct g_raid3_metadata * md,u_char * data)2722d1661a5SPawel Jakub Dawidek raid3_metadata_encode(struct g_raid3_metadata *md, u_char *data)
2732d1661a5SPawel Jakub Dawidek {
2742d1661a5SPawel Jakub Dawidek MD5_CTX ctx;
2752d1661a5SPawel Jakub Dawidek
2762d1661a5SPawel Jakub Dawidek bcopy(md->md_magic, data, 16);
2772d1661a5SPawel Jakub Dawidek le32enc(data + 16, md->md_version);
2782d1661a5SPawel Jakub Dawidek bcopy(md->md_name, data + 20, 16);
2792d1661a5SPawel Jakub Dawidek le32enc(data + 36, md->md_id);
2802d1661a5SPawel Jakub Dawidek le16enc(data + 40, md->md_no);
2812d1661a5SPawel Jakub Dawidek le16enc(data + 42, md->md_all);
282a245a548SPawel Jakub Dawidek le32enc(data + 44, md->md_genid);
283a245a548SPawel Jakub Dawidek le32enc(data + 48, md->md_syncid);
284a245a548SPawel Jakub Dawidek le64enc(data + 52, md->md_mediasize);
285a245a548SPawel Jakub Dawidek le32enc(data + 60, md->md_sectorsize);
286a245a548SPawel Jakub Dawidek le64enc(data + 64, md->md_sync_offset);
287a245a548SPawel Jakub Dawidek le64enc(data + 72, md->md_mflags);
288a245a548SPawel Jakub Dawidek le64enc(data + 80, md->md_dflags);
289a245a548SPawel Jakub Dawidek bcopy(md->md_provider, data + 88, 16);
290e6890985SPawel Jakub Dawidek le64enc(data + 104, md->md_provsize);
2912d1661a5SPawel Jakub Dawidek MD5Init(&ctx);
292e6890985SPawel Jakub Dawidek MD5Update(&ctx, data, 112);
2932d1661a5SPawel Jakub Dawidek MD5Final(md->md_hash, &ctx);
294e6890985SPawel Jakub Dawidek bcopy(md->md_hash, data + 112, 16);
2952d1661a5SPawel Jakub Dawidek }
2962d1661a5SPawel Jakub Dawidek static __inline int
raid3_metadata_decode_v0v1v2(const u_char * data,struct g_raid3_metadata * md)297a245a548SPawel Jakub Dawidek raid3_metadata_decode_v0v1v2(const u_char *data, struct g_raid3_metadata *md)
2982d1661a5SPawel Jakub Dawidek {
2992d1661a5SPawel Jakub Dawidek MD5_CTX ctx;
3002d1661a5SPawel Jakub Dawidek
3012d1661a5SPawel Jakub Dawidek bcopy(data + 20, md->md_name, 16);
3022d1661a5SPawel Jakub Dawidek md->md_id = le32dec(data + 36);
3032d1661a5SPawel Jakub Dawidek md->md_no = le16dec(data + 40);
3042d1661a5SPawel Jakub Dawidek md->md_all = le16dec(data + 42);
3052d1661a5SPawel Jakub Dawidek md->md_syncid = le32dec(data + 44);
3062d1661a5SPawel Jakub Dawidek md->md_mediasize = le64dec(data + 48);
3072d1661a5SPawel Jakub Dawidek md->md_sectorsize = le32dec(data + 56);
3082d1661a5SPawel Jakub Dawidek md->md_sync_offset = le64dec(data + 60);
3092d1661a5SPawel Jakub Dawidek md->md_mflags = le64dec(data + 68);
3102d1661a5SPawel Jakub Dawidek md->md_dflags = le64dec(data + 76);
3112d1661a5SPawel Jakub Dawidek bcopy(data + 84, md->md_provider, 16);
3122d1661a5SPawel Jakub Dawidek bcopy(data + 100, md->md_hash, 16);
3132d1661a5SPawel Jakub Dawidek MD5Init(&ctx);
3142d1661a5SPawel Jakub Dawidek MD5Update(&ctx, data, 100);
3152d1661a5SPawel Jakub Dawidek MD5Final(md->md_hash, &ctx);
3162d1661a5SPawel Jakub Dawidek if (bcmp(md->md_hash, data + 100, 16) != 0)
3172d1661a5SPawel Jakub Dawidek return (EINVAL);
318e6890985SPawel Jakub Dawidek
319e6890985SPawel Jakub Dawidek /* New fields. */
320e6890985SPawel Jakub Dawidek md->md_genid = 0;
321e6890985SPawel Jakub Dawidek md->md_provsize = 0;
322e6890985SPawel Jakub Dawidek
3232d1661a5SPawel Jakub Dawidek return (0);
3242d1661a5SPawel Jakub Dawidek }
325a245a548SPawel Jakub Dawidek static __inline int
raid3_metadata_decode_v3(const u_char * data,struct g_raid3_metadata * md)326a245a548SPawel Jakub Dawidek raid3_metadata_decode_v3(const u_char *data, struct g_raid3_metadata *md)
327a245a548SPawel Jakub Dawidek {
328a245a548SPawel Jakub Dawidek MD5_CTX ctx;
329a245a548SPawel Jakub Dawidek
330a245a548SPawel Jakub Dawidek bcopy(data + 20, md->md_name, 16);
331a245a548SPawel Jakub Dawidek md->md_id = le32dec(data + 36);
332a245a548SPawel Jakub Dawidek md->md_no = le16dec(data + 40);
333a245a548SPawel Jakub Dawidek md->md_all = le16dec(data + 42);
334a245a548SPawel Jakub Dawidek md->md_genid = le32dec(data + 44);
335a245a548SPawel Jakub Dawidek md->md_syncid = le32dec(data + 48);
336a245a548SPawel Jakub Dawidek md->md_mediasize = le64dec(data + 52);
337a245a548SPawel Jakub Dawidek md->md_sectorsize = le32dec(data + 60);
338a245a548SPawel Jakub Dawidek md->md_sync_offset = le64dec(data + 64);
339a245a548SPawel Jakub Dawidek md->md_mflags = le64dec(data + 72);
340a245a548SPawel Jakub Dawidek md->md_dflags = le64dec(data + 80);
341a245a548SPawel Jakub Dawidek bcopy(data + 88, md->md_provider, 16);
342a245a548SPawel Jakub Dawidek bcopy(data + 104, md->md_hash, 16);
343a245a548SPawel Jakub Dawidek MD5Init(&ctx);
344a245a548SPawel Jakub Dawidek MD5Update(&ctx, data, 104);
345a245a548SPawel Jakub Dawidek MD5Final(md->md_hash, &ctx);
346a245a548SPawel Jakub Dawidek if (bcmp(md->md_hash, data + 104, 16) != 0)
347a245a548SPawel Jakub Dawidek return (EINVAL);
348e6890985SPawel Jakub Dawidek
349e6890985SPawel Jakub Dawidek /* New fields. */
350e6890985SPawel Jakub Dawidek md->md_provsize = 0;
351e6890985SPawel Jakub Dawidek
352e6890985SPawel Jakub Dawidek return (0);
353e6890985SPawel Jakub Dawidek }
354e6890985SPawel Jakub Dawidek static __inline int
raid3_metadata_decode_v4v5(const u_char * data,struct g_raid3_metadata * md)355501250baSPawel Jakub Dawidek raid3_metadata_decode_v4v5(const u_char *data, struct g_raid3_metadata *md)
356e6890985SPawel Jakub Dawidek {
357e6890985SPawel Jakub Dawidek MD5_CTX ctx;
358e6890985SPawel Jakub Dawidek
359e6890985SPawel Jakub Dawidek bcopy(data + 20, md->md_name, 16);
360e6890985SPawel Jakub Dawidek md->md_id = le32dec(data + 36);
361e6890985SPawel Jakub Dawidek md->md_no = le16dec(data + 40);
362e6890985SPawel Jakub Dawidek md->md_all = le16dec(data + 42);
363e6890985SPawel Jakub Dawidek md->md_genid = le32dec(data + 44);
364e6890985SPawel Jakub Dawidek md->md_syncid = le32dec(data + 48);
365e6890985SPawel Jakub Dawidek md->md_mediasize = le64dec(data + 52);
366e6890985SPawel Jakub Dawidek md->md_sectorsize = le32dec(data + 60);
367e6890985SPawel Jakub Dawidek md->md_sync_offset = le64dec(data + 64);
368e6890985SPawel Jakub Dawidek md->md_mflags = le64dec(data + 72);
369e6890985SPawel Jakub Dawidek md->md_dflags = le64dec(data + 80);
370e6890985SPawel Jakub Dawidek bcopy(data + 88, md->md_provider, 16);
371e6890985SPawel Jakub Dawidek md->md_provsize = le64dec(data + 104);
372e6890985SPawel Jakub Dawidek bcopy(data + 112, md->md_hash, 16);
373e6890985SPawel Jakub Dawidek MD5Init(&ctx);
374e6890985SPawel Jakub Dawidek MD5Update(&ctx, data, 112);
375e6890985SPawel Jakub Dawidek MD5Final(md->md_hash, &ctx);
376e6890985SPawel Jakub Dawidek if (bcmp(md->md_hash, data + 112, 16) != 0)
377e6890985SPawel Jakub Dawidek return (EINVAL);
378a245a548SPawel Jakub Dawidek return (0);
379a245a548SPawel Jakub Dawidek }
380a245a548SPawel Jakub Dawidek static __inline int
raid3_metadata_decode(const u_char * data,struct g_raid3_metadata * md)381a245a548SPawel Jakub Dawidek raid3_metadata_decode(const u_char *data, struct g_raid3_metadata *md)
382a245a548SPawel Jakub Dawidek {
383a245a548SPawel Jakub Dawidek int error;
384a245a548SPawel Jakub Dawidek
385a245a548SPawel Jakub Dawidek bcopy(data, md->md_magic, 16);
386a245a548SPawel Jakub Dawidek md->md_version = le32dec(data + 16);
387a245a548SPawel Jakub Dawidek switch (md->md_version) {
388a245a548SPawel Jakub Dawidek case 0:
389a245a548SPawel Jakub Dawidek case 1:
390a245a548SPawel Jakub Dawidek case 2:
391a245a548SPawel Jakub Dawidek error = raid3_metadata_decode_v0v1v2(data, md);
392a245a548SPawel Jakub Dawidek break;
393a245a548SPawel Jakub Dawidek case 3:
394a245a548SPawel Jakub Dawidek error = raid3_metadata_decode_v3(data, md);
395a245a548SPawel Jakub Dawidek break;
396e6890985SPawel Jakub Dawidek case 4:
397501250baSPawel Jakub Dawidek case 5:
398501250baSPawel Jakub Dawidek error = raid3_metadata_decode_v4v5(data, md);
399e6890985SPawel Jakub Dawidek break;
400a245a548SPawel Jakub Dawidek default:
401a245a548SPawel Jakub Dawidek error = EINVAL;
402a245a548SPawel Jakub Dawidek break;
403a245a548SPawel Jakub Dawidek }
404a245a548SPawel Jakub Dawidek return (error);
405a245a548SPawel Jakub Dawidek }
4062d1661a5SPawel Jakub Dawidek
4072d1661a5SPawel Jakub Dawidek static __inline void
raid3_metadata_dump(const struct g_raid3_metadata * md)4082d1661a5SPawel Jakub Dawidek raid3_metadata_dump(const struct g_raid3_metadata *md)
4092d1661a5SPawel Jakub Dawidek {
4102d1661a5SPawel Jakub Dawidek static const char hex[] = "0123456789abcdef";
4112d1661a5SPawel Jakub Dawidek char hash[16 * 2 + 1];
4122d1661a5SPawel Jakub Dawidek u_int i;
4132d1661a5SPawel Jakub Dawidek
4142d1661a5SPawel Jakub Dawidek printf(" magic: %s\n", md->md_magic);
4152d1661a5SPawel Jakub Dawidek printf(" version: %u\n", (u_int)md->md_version);
4162d1661a5SPawel Jakub Dawidek printf(" name: %s\n", md->md_name);
4172d1661a5SPawel Jakub Dawidek printf(" id: %u\n", (u_int)md->md_id);
4182d1661a5SPawel Jakub Dawidek printf(" no: %u\n", (u_int)md->md_no);
4192d1661a5SPawel Jakub Dawidek printf(" all: %u\n", (u_int)md->md_all);
420a245a548SPawel Jakub Dawidek printf(" genid: %u\n", (u_int)md->md_genid);
4212d1661a5SPawel Jakub Dawidek printf(" syncid: %u\n", (u_int)md->md_syncid);
4222d1661a5SPawel Jakub Dawidek printf(" mediasize: %jd\n", (intmax_t)md->md_mediasize);
4232d1661a5SPawel Jakub Dawidek printf("sectorsize: %u\n", (u_int)md->md_sectorsize);
4242d1661a5SPawel Jakub Dawidek printf("syncoffset: %jd\n", (intmax_t)md->md_sync_offset);
4252d1661a5SPawel Jakub Dawidek printf(" mflags:");
4262d1661a5SPawel Jakub Dawidek if (md->md_mflags == 0)
4272d1661a5SPawel Jakub Dawidek printf(" NONE");
4282d1661a5SPawel Jakub Dawidek else {
4292d1661a5SPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0)
4302d1661a5SPawel Jakub Dawidek printf(" NOAUTOSYNC");
431f5a2f7feSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0)
432f5a2f7feSPawel Jakub Dawidek printf(" ROUND-ROBIN");
433dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0)
434dba915cfSPawel Jakub Dawidek printf(" VERIFY");
435501250baSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0)
436501250baSPawel Jakub Dawidek printf(" NOFAILSYNC");
4372d1661a5SPawel Jakub Dawidek }
4382d1661a5SPawel Jakub Dawidek printf("\n");
4392d1661a5SPawel Jakub Dawidek printf(" dflags:");
4402d1661a5SPawel Jakub Dawidek if (md->md_dflags == 0)
4412d1661a5SPawel Jakub Dawidek printf(" NONE");
4422d1661a5SPawel Jakub Dawidek else {
4432d1661a5SPawel Jakub Dawidek if ((md->md_dflags & G_RAID3_DISK_FLAG_DIRTY) != 0)
4442d1661a5SPawel Jakub Dawidek printf(" DIRTY");
4452d1661a5SPawel Jakub Dawidek if ((md->md_dflags & G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0)
4462d1661a5SPawel Jakub Dawidek printf(" SYNCHRONIZING");
4472d1661a5SPawel Jakub Dawidek if ((md->md_dflags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0)
4482d1661a5SPawel Jakub Dawidek printf(" FORCE_SYNC");
4492d1661a5SPawel Jakub Dawidek }
4502d1661a5SPawel Jakub Dawidek printf("\n");
4512d1661a5SPawel Jakub Dawidek printf("hcprovider: %s\n", md->md_provider);
452e6890985SPawel Jakub Dawidek printf(" provsize: %ju\n", (uintmax_t)md->md_provsize);
4532d1661a5SPawel Jakub Dawidek bzero(hash, sizeof(hash));
4542d1661a5SPawel Jakub Dawidek for (i = 0; i < 16; i++) {
4552d1661a5SPawel Jakub Dawidek hash[i * 2] = hex[md->md_hash[i] >> 4];
4562d1661a5SPawel Jakub Dawidek hash[i * 2 + 1] = hex[md->md_hash[i] & 0x0f];
4572d1661a5SPawel Jakub Dawidek }
4582d1661a5SPawel Jakub Dawidek printf(" MD5 hash: %s\n", hash);
4592d1661a5SPawel Jakub Dawidek }
4602d1661a5SPawel Jakub Dawidek #endif /* !_G_RAID3_H_ */
461