1 /*- 2 * Copyright (c) 2003 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 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 */ 41 #define G_SHSEC_VERSION 0 42 43 #ifdef _KERNEL 44 #define G_SHSEC_BFLAG_FIRST 0x1 45 46 #define G_SHSEC_DEBUG(lvl, ...) do { \ 47 if (g_shsec_debug >= (lvl)) { \ 48 printf("GEOM_SHSEC"); \ 49 if (g_shsec_debug > 0) \ 50 printf("[%u]", lvl); \ 51 printf(": "); \ 52 printf(__VA_ARGS__); \ 53 printf("\n"); \ 54 } \ 55 } while (0) 56 #define G_SHSEC_LOGREQ(lvl, bp, ...) do { \ 57 if (g_shsec_debug >= (lvl)) { \ 58 printf("GEOM_SHSEC"); \ 59 if (g_shsec_debug > 0) \ 60 printf("[%u]", lvl); \ 61 printf(": "); \ 62 printf(__VA_ARGS__); \ 63 printf(" "); \ 64 g_print_bio(bp); \ 65 printf("\n"); \ 66 } \ 67 } while (0) 68 69 struct g_shsec_softc { 70 u_int sc_type; /* provider type */ 71 struct g_geom *sc_geom; 72 struct g_provider *sc_provider; 73 uint32_t sc_id; /* device unique ID */ 74 struct g_consumer **sc_disks; 75 uint16_t sc_ndisks; 76 }; 77 #define sc_name sc_geom->name 78 #endif /* _KERNEL */ 79 80 struct g_shsec_metadata { 81 char md_magic[16]; /* Magic value. */ 82 uint32_t md_version; /* Version number. */ 83 char md_name[16]; /* Stripe name. */ 84 uint32_t md_id; /* Unique ID. */ 85 uint16_t md_no; /* Disk number. */ 86 uint16_t md_all; /* Number of all disks. */ 87 char md_provider[16]; /* Hardcoded provider. */ 88 }; 89 static __inline void 90 shsec_metadata_encode(const struct g_shsec_metadata *md, u_char *data) 91 { 92 93 bcopy(md->md_magic, data, sizeof(md->md_magic)); 94 le32enc(data + 16, md->md_version); 95 bcopy(md->md_name, data + 20, sizeof(md->md_name)); 96 le32enc(data + 36, md->md_id); 97 le16enc(data + 40, md->md_no); 98 le16enc(data + 42, md->md_all); 99 bcopy(md->md_provider, data + 44, sizeof(md->md_provider)); 100 } 101 static __inline void 102 shsec_metadata_decode(const u_char *data, struct g_shsec_metadata *md) 103 { 104 105 bcopy(data, md->md_magic, sizeof(md->md_magic)); 106 md->md_version = le32dec(data + 16); 107 bcopy(data + 20, md->md_name, sizeof(md->md_name)); 108 md->md_id = le32dec(data + 36); 109 md->md_no = le16dec(data + 40); 110 md->md_all = le16dec(data + 42); 111 bcopy(data + 44, md->md_provider, sizeof(md->md_provider)); 112 } 113 #endif /* _G_SHSEC_H_ */ 114