1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _G_SHSEC_H_ 30 #define _G_SHSEC_H_ 31 32 #include <sys/endian.h> 33 34 #define G_SHSEC_CLASS_NAME "SHSEC" 35 36 #define G_SHSEC_MAGIC "GEOM::SHSEC" 37 /* 38 * Version history: 39 * 0 - Initial version number. 40 * 1 - Added md_provsize field to metadata. 41 */ 42 #define G_SHSEC_VERSION 1 43 44 #ifdef _KERNEL 45 #define G_SHSEC_BFLAG_FIRST 0x1 46 47 #define G_SHSEC_DEBUG(lvl, ...) \ 48 _GEOM_DEBUG("GEOM_SHSEC", g_shsec_debug, (lvl), NULL, __VA_ARGS__) 49 #define G_SHSEC_LOGREQ(lvl, bp, ...) \ 50 _GEOM_DEBUG("GEOM_SHSEC", g_shsec_debug, (lvl), (bp), __VA_ARGS__) 51 52 struct g_shsec_softc { 53 u_int sc_type; /* provider type */ 54 struct g_geom *sc_geom; 55 struct g_provider *sc_provider; 56 uint32_t sc_id; /* device unique ID */ 57 struct g_consumer **sc_disks; 58 uint16_t sc_ndisks; 59 }; 60 #define sc_name sc_geom->name 61 #endif /* _KERNEL */ 62 63 struct g_shsec_metadata { 64 char md_magic[16]; /* Magic value. */ 65 uint32_t md_version; /* Version number. */ 66 char md_name[16]; /* Stripe name. */ 67 uint32_t md_id; /* Unique ID. */ 68 uint16_t md_no; /* Disk number. */ 69 uint16_t md_all; /* Number of all disks. */ 70 char md_provider[16]; /* Hardcoded provider. */ 71 uint64_t md_provsize; /* Provider's size. */ 72 }; 73 static __inline void 74 shsec_metadata_encode(const struct g_shsec_metadata *md, u_char *data) 75 { 76 77 bcopy(md->md_magic, data, sizeof(md->md_magic)); 78 le32enc(data + 16, md->md_version); 79 bcopy(md->md_name, data + 20, sizeof(md->md_name)); 80 le32enc(data + 36, md->md_id); 81 le16enc(data + 40, md->md_no); 82 le16enc(data + 42, md->md_all); 83 bcopy(md->md_provider, data + 44, sizeof(md->md_provider)); 84 le64enc(data + 60, md->md_provsize); 85 } 86 static __inline void 87 shsec_metadata_decode(const u_char *data, struct g_shsec_metadata *md) 88 { 89 90 bcopy(data, md->md_magic, sizeof(md->md_magic)); 91 md->md_version = le32dec(data + 16); 92 bcopy(data + 20, md->md_name, sizeof(md->md_name)); 93 md->md_id = le32dec(data + 36); 94 md->md_no = le16dec(data + 40); 95 md->md_all = le16dec(data + 42); 96 bcopy(data + 44, md->md_provider, sizeof(md->md_provider)); 97 md->md_provsize = le64dec(data + 60); 98 } 99 #endif /* _G_SHSEC_H_ */ 100