1126007Spjd/*- 2142727Spjd * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3126007Spjd * All rights reserved. 4126007Spjd * 5126007Spjd * Redistribution and use in source and binary forms, with or without 6126007Spjd * modification, are permitted provided that the following conditions 7126007Spjd * are met: 8126007Spjd * 1. Redistributions of source code must retain the above copyright 9126007Spjd * notice, this list of conditions and the following disclaimer. 10126007Spjd * 2. Redistributions in binary form must reproduce the above copyright 11126007Spjd * notice, this list of conditions and the following disclaimer in the 12126007Spjd * documentation and/or other materials provided with the distribution. 13155174Spjd * 14126007Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15126007Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16126007Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17126007Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18126007Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19126007Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20126007Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21126007Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22126007Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23126007Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24126007Spjd * SUCH DAMAGE. 25126007Spjd * 26126007Spjd * $FreeBSD: releng/11.0/sys/geom/concat/g_concat.h 256880 2013-10-22 08:22:19Z mav $ 27126007Spjd */ 28126007Spjd 29126007Spjd#ifndef _G_CONCAT_H_ 30126007Spjd#define _G_CONCAT_H_ 31126007Spjd 32126007Spjd#include <sys/endian.h> 33126007Spjd 34126007Spjd#define G_CONCAT_CLASS_NAME "CONCAT" 35126007Spjd 36126007Spjd#define G_CONCAT_MAGIC "GEOM::CONCAT" 37133373Spjd/* 38133373Spjd * Version history: 39133373Spjd * 1 - Initial version number. 40133373Spjd * 2 - Added 'stop' command to gconcat(8). 41133373Spjd * 3 - Added md_provider field to metadata and '-h' option to gconcat(8). 42142727Spjd * 4 - Added md_provsize field to metadata. 43133373Spjd */ 44142727Spjd#define G_CONCAT_VERSION 4 45126007Spjd 46126007Spjd#ifdef _KERNEL 47126007Spjd#define G_CONCAT_TYPE_MANUAL 0 48126007Spjd#define G_CONCAT_TYPE_AUTOMATIC 1 49126007Spjd 50126007Spjd#define G_CONCAT_DEBUG(lvl, ...) do { \ 51126007Spjd if (g_concat_debug >= (lvl)) { \ 52129478Spjd printf("GEOM_CONCAT"); \ 53129478Spjd if (g_concat_debug > 0) \ 54129478Spjd printf("[%u]", lvl); \ 55129478Spjd printf(": "); \ 56126007Spjd printf(__VA_ARGS__); \ 57126007Spjd printf("\n"); \ 58126007Spjd } \ 59126007Spjd} while (0) 60126007Spjd#define G_CONCAT_LOGREQ(bp, ...) do { \ 61126007Spjd if (g_concat_debug >= 2) { \ 62126007Spjd printf("GEOM_CONCAT[2]: "); \ 63126007Spjd printf(__VA_ARGS__); \ 64126772Spjd printf(" "); \ 65126007Spjd g_print_bio(bp); \ 66126007Spjd printf("\n"); \ 67126007Spjd } \ 68126007Spjd} while (0) 69126007Spjd 70126007Spjdstruct g_concat_disk { 71126007Spjd struct g_consumer *d_consumer; 72126007Spjd struct g_concat_softc *d_softc; 73126007Spjd off_t d_start; 74126007Spjd off_t d_end; 75227004Smav int d_removed; 76126007Spjd}; 77126007Spjd 78126007Spjdstruct g_concat_softc { 79129478Spjd u_int sc_type; /* provider type */ 80129478Spjd struct g_geom *sc_geom; 81126007Spjd struct g_provider *sc_provider; 82129478Spjd uint32_t sc_id; /* concat unique ID */ 83126007Spjd 84126007Spjd struct g_concat_disk *sc_disks; 85129478Spjd uint16_t sc_ndisks; 86256880Smav struct mtx sc_lock; 87126007Spjd}; 88132663Spjd#define sc_name sc_geom->name 89126007Spjd#endif /* _KERNEL */ 90126007Spjd 91126007Spjdstruct g_concat_metadata { 92126007Spjd char md_magic[16]; /* Magic value. */ 93126007Spjd uint32_t md_version; /* Version number. */ 94126007Spjd char md_name[16]; /* Concat name. */ 95126007Spjd uint32_t md_id; /* Unique ID. */ 96126007Spjd uint16_t md_no; /* Disk number. */ 97126007Spjd uint16_t md_all; /* Number of all disks. */ 98133373Spjd char md_provider[16]; /* Hardcoded provider. */ 99142727Spjd uint64_t md_provsize; /* Provider's size. */ 100126007Spjd}; 101126007Spjdstatic __inline void 102126007Spjdconcat_metadata_encode(const struct g_concat_metadata *md, u_char *data) 103126007Spjd{ 104126007Spjd 105126007Spjd bcopy(md->md_magic, data, sizeof(md->md_magic)); 106126007Spjd le32enc(data + 16, md->md_version); 107126007Spjd bcopy(md->md_name, data + 20, sizeof(md->md_name)); 108126007Spjd le32enc(data + 36, md->md_id); 109126007Spjd le16enc(data + 40, md->md_no); 110126007Spjd le16enc(data + 42, md->md_all); 111133373Spjd bcopy(md->md_provider, data + 44, sizeof(md->md_provider)); 112142727Spjd le64enc(data + 60, md->md_provsize); 113126007Spjd} 114126007Spjdstatic __inline void 115126007Spjdconcat_metadata_decode(const u_char *data, struct g_concat_metadata *md) 116126007Spjd{ 117126007Spjd 118126007Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 119126007Spjd md->md_version = le32dec(data + 16); 120126007Spjd bcopy(data + 20, md->md_name, sizeof(md->md_name)); 121126007Spjd md->md_id = le32dec(data + 36); 122126007Spjd md->md_no = le16dec(data + 40); 123126007Spjd md->md_all = le16dec(data + 42); 124133373Spjd bcopy(data + 44, md->md_provider, sizeof(md->md_provider)); 125142727Spjd md->md_provsize = le64dec(data + 60); 126126007Spjd} 127126007Spjd#endif /* _G_CONCAT_H_ */ 128