geom_sunlabel.c revision 97075
1129473Spjd/*- 2129473Spjd * Copyright (c) 2002 Poul-Henning Kamp 3129473Spjd * Copyright (c) 2002 Networks Associates Technology, Inc. 4129473Spjd * All rights reserved. 5129473Spjd * 6129473Spjd * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7129473Spjd * and NAI Labs, the Security Research Division of Network Associates, Inc. 8129473Spjd * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9129473Spjd * DARPA CHATS research program. 10129473Spjd * 11129473Spjd * Redistribution and use in source and binary forms, with or without 12129473Spjd * modification, are permitted provided that the following conditions 13129473Spjd * are met: 14129473Spjd * 1. Redistributions of source code must retain the above copyright 15129473Spjd * notice, this list of conditions and the following disclaimer. 16129473Spjd * 2. Redistributions in binary form must reproduce the above copyright 17129473Spjd * notice, this list of conditions and the following disclaimer in the 18129473Spjd * documentation and/or other materials provided with the distribution. 19129473Spjd * 3. The names of the authors may not be used to endorse or promote 20129473Spjd * products derived from this software without specific prior written 21129473Spjd * permission. 22129473Spjd * 23129473Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24129473Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25129473Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26129473Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27129473Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28129473Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29129473Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30129473Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31129473Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32129473Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33129473Spjd * SUCH DAMAGE. 34129473Spjd * 35129473Spjd * $FreeBSD: head/sys/geom/geom_sunlabel.c 97075 2002-05-21 19:50:04Z phk $ 36129473Spjd */ 37129473Spjd 38129473Spjd 39131878Spjd#include <sys/param.h> 40129473Spjd#ifndef _KERNEL 41129473Spjd#include <stdio.h> 42129473Spjd#include <string.h> 43129473Spjd#include <stdlib.h> 44131878Spjd#include <signal.h> 45129473Spjd#include <err.h> 46129473Spjd#else 47131878Spjd#include <sys/systm.h> 48129473Spjd#include <sys/kernel.h> 49129473Spjd#include <sys/conf.h> 50129473Spjd#include <sys/bio.h> 51129473Spjd#include <sys/malloc.h> 52129473Spjd#include <sys/lock.h> 53129473Spjd#include <sys/mutex.h> 54129473Spjd#endif 55129473Spjd#include <sys/errno.h> 56131878Spjd#include <geom/geom.h> 57131878Spjd#include <geom/geom_slice.h> 58129473Spjd#include <machine/endian.h> 59129473Spjd 60129473Spjd#define SUNLABEL_CLASS_NAME "SUN" 61129473Spjd 62129473Spjdstruct g_sunlabel_softc { 63131878Spjd int foo; 64131878Spjd}; 65131878Spjd 66129473Spjdstatic int 67129473Spjdg_sunlabel_start(struct bio *bp) 68131878Spjd{ 69131878Spjd struct g_geom *gp; 70131878Spjd struct g_sunlabel_softc *ms; 71131878Spjd struct g_slicer *gsp; 72131878Spjd 73131878Spjd gp = bp->bio_to->geom; 74131878Spjd gsp = gp->softc; 75131878Spjd ms = gsp->softc; 76131878Spjd return (0); 77131878Spjd} 78131878Spjd 79129473Spjdstatic void 80131878Spjdg_sunlabel_dumpconf(struct sbuf *sb, char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp) 81131878Spjd{ 82131878Spjd 83131878Spjd g_slice_dumpconf(sb, indent, gp, cp, pp); 84131878Spjd} 85131878Spjd 86131878Spjdstatic struct g_geom * 87132095Spjdg_sunlabel_taste(struct g_class *mp, struct g_provider *pp, int flags) 88131878Spjd{ 89131878Spjd struct g_geom *gp; 90131878Spjd struct g_consumer *cp; 91132095Spjd struct g_provider *pp2; 92131878Spjd int error, i, npart; 93129473Spjd u_char *buf; 94129473Spjd struct g_sunlabel_softc *ms; 95129473Spjd u_int sectorsize, u, v, csize; 96129473Spjd off_t mediasize; 97129473Spjd struct g_slicer *gsp; 98129473Spjd 99129473Spjd g_trace(G_T_TOPOLOGY, "g_sunlabel_taste(%s,%s)", mp->name, pp->name); 100129473Spjd g_topology_assert(); 101129473Spjd if (flags == G_TF_NORMAL && 102129473Spjd !strcmp(pp->geom->class->name, SUNLABEL_CLASS_NAME)) 103129473Spjd return (NULL); 104129473Spjd gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_sunlabel_start); 105129473Spjd if (gp == NULL) 106129473Spjd return (NULL); 107129473Spjd gsp = gp->softc; 108129473Spjd g_topology_unlock(); 109129473Spjd gp->dumpconf = g_sunlabel_dumpconf; 110129473Spjd npart = 0; 111129473Spjd while (1) { /* a trick to allow us to use break */ 112129473Spjd if (gp->rank != 2 && flags == G_TF_NORMAL) 113129473Spjd break; 114129473Spjd error = g_getattr("GEOM::sectorsize", cp, §orsize); 115129473Spjd if (error) { 116129473Spjd sectorsize = 512; 117129473Spjd printf("g_sunlabel_taste: error %d Sectors are %d bytes\n", 118129473Spjd error, sectorsize); 119131878Spjd } 120131878Spjd gsp->frontstuff = 16 * sectorsize; 121131878Spjd error = g_getattr("GEOM::mediasize", cp, &mediasize); 122131878Spjd if (error) { 123131878Spjd mediasize = 0; 124131878Spjd printf("g_error %d Mediasize is %lld bytes\n", 125131878Spjd error, (long long)mediasize); 126131878Spjd } 127131878Spjd buf = g_read_data(cp, 0, sectorsize, &error); 128131878Spjd if (buf == NULL || error != 0) 129131878Spjd break; 130131878Spjd 131131878Spjd /* The second last short is a magic number */ 132131878Spjd if (g_dec_be2(buf + 508) != 0xdabe) 133131878Spjd break; 134131878Spjd /* The shortword parity of the entire thing must be even */ 135131878Spjd u = 0; 136129473Spjd for (i = 0; i < 512; i += 2) 137129473Spjd u ^= g_dec_be2(buf + i); 138129473Spjd if (u != 0) 139129473Spjd break; 140129473Spjd if (bootverbose) { 141129473Spjd g_hexdump(buf, 128); 142129473Spjd for (i = 0; i < 8; i++) { 143129473Spjd printf("part %d %u %u\n", i, 144129473Spjd g_dec_be4(buf + 444 + i * 8), 145129473Spjd g_dec_be4(buf + 448 + i * 8)); 146129473Spjd } 147129473Spjd printf("v_version = %d\n", g_dec_be4(buf + 128)); 148129473Spjd printf("v_nparts = %d\n", g_dec_be2(buf + 140)); 149129473Spjd for (i = 0; i < 8; i++) { 150129473Spjd printf("v_part[%d] = %d %d\n", 151129473Spjd i, g_dec_be2(buf + 142 + i * 4), 152129473Spjd g_dec_be2(buf + 144 + i * 4)); 153129473Spjd } 154129473Spjd printf("v_sanity %x\n", g_dec_be4(buf + 186)); 155129473Spjd printf("v_version = %d\n", g_dec_be4(buf + 128)); 156129473Spjd printf("v_rpm %d\n", g_dec_be2(buf + 420)); 157129473Spjd printf("v_totalcyl %d\n", g_dec_be2(buf + 422)); 158129473Spjd printf("v_cyl %d\n", g_dec_be2(buf + 432)); 159129473Spjd printf("v_alt %d\n", g_dec_be2(buf + 434)); 160129473Spjd printf("v_head %d\n", g_dec_be2(buf + 436)); 161129473Spjd printf("v_sec %d\n", g_dec_be2(buf + 438)); 162129473Spjd } 163129473Spjd 164129473Spjd csize = g_dec_be2(buf + 436) * g_dec_be2(buf + 438); 165132664Spjd 166129473Spjd for (i = 0; i < 8; i++) { 167129473Spjd v = g_dec_be4(buf + 444 + i * 8); 168129473Spjd u = g_dec_be4(buf + 448 + i * 8); 169129473Spjd if (u == 0) 170129473Spjd continue; 171132664Spjd npart++; 172129473Spjd pp2 = g_slice_addslice(gp, i, 173129473Spjd ((off_t)v * csize) << 9ULL, 174129473Spjd ((off_t)u) << 9ULL, 175129473Spjd "%s%c", pp->name, 'a' + i); 176129473Spjd g_error_provider(pp2, 0); 177129473Spjd } 178129473Spjd break; 179129473Spjd } 180129473Spjd g_topology_lock(); 181129473Spjd error = g_access_rel(cp, -1, 0, 0); 182129473Spjd if (npart > 0) 183129473Spjd return (gp); 184129473Spjd g_std_spoiled(cp); 185129473Spjd return (NULL); 186129473Spjd} 187129473Spjd 188129473Spjdstatic struct g_class g_sunlabel_class = { 189129473Spjd SUNLABEL_CLASS_NAME, 190129473Spjd g_sunlabel_taste, 191129473Spjd NULL, 192129473Spjd G_CLASS_INITSTUFF 193129473Spjd}; 194129473Spjd 195129473SpjdDECLARE_GEOM_CLASS(g_sunlabel_class, g_sunlabel); 196129473Spjd