geom_sunlabel.c revision 105542
119000Sbde/*- 219000Sbde * Copyright (c) 2002 Poul-Henning Kamp 319000Sbde * Copyright (c) 2002 Networks Associates Technology, Inc. 415146Swollman * All rights reserved. 519000Sbde * 619000Sbde * This software was developed for the FreeBSD Project by Poul-Henning Kamp 719000Sbde * and NAI Labs, the Security Research Division of Network Associates, Inc. 819000Sbde * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 919000Sbde * DARPA CHATS research program. 1019000Sbde * 1119000Sbde * Redistribution and use in source and binary forms, with or without 1219000Sbde * modification, are permitted provided that the following conditions 1319000Sbde * are met: 1419000Sbde * 1. Redistributions of source code must retain the above copyright 1519000Sbde * notice, this list of conditions and the following disclaimer. 1619000Sbde * 2. Redistributions in binary form must reproduce the above copyright 1719000Sbde * notice, this list of conditions and the following disclaimer in the 1819000Sbde * documentation and/or other materials provided with the distribution. 1919000Sbde * 3. The names of the authors may not be used to endorse or promote 2019000Sbde * products derived from this software without specific prior written 2119000Sbde * permission. 2219000Sbde * 2319000Sbde * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2419000Sbde * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2515146Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2619000Sbde * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27115703Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28115703Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29115703Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3019000Sbde * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3119000Sbde * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3219000Sbde * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3319000Sbde * SUCH DAMAGE. 34163727Sbde * 35163727Sbde * $FreeBSD: head/sys/geom/geom_sunlabel.c 105542 2002-10-20 19:18:07Z phk $ 36167905Snjl */ 37167905Snjl 38167905Snjl 3919000Sbde#include <sys/param.h> 4031395Sbde#ifndef _KERNEL 41163756Sbde#include <stdio.h> 4231395Sbde#include <string.h> 4319000Sbde#include <stdlib.h> 4413107Sbde#include <signal.h> 4519000Sbde#include <err.h> 46163727Sbde#else 4719000Sbde#include <sys/systm.h> 4819000Sbde#include <sys/kernel.h> 4919000Sbde#include <sys/conf.h> 5032005Sphk#include <sys/bio.h> 5119000Sbde#include <sys/malloc.h> 5219000Sbde#include <sys/lock.h> 5319000Sbde#include <sys/mutex.h> 5419000Sbde#endif 5519000Sbde#include <geom/geom.h> 5619000Sbde#include <geom/geom_slice.h> 57163756Sbde#include <machine/endian.h> 5819000Sbde 5919000Sbde#define SUNLABEL_CLASS_NAME "SUN" 6019000Sbde 6113107Sbdestruct g_sunlabel_softc { 62167905Snjl int foo; 63167905Snjl}; 64167905Snjl 6519000Sbdestatic int 6613107Sbdeg_sunlabel_start(struct bio *bp) 67143063Sjoerg{ 6835303Sbde struct g_geom *gp; 6935303Sbde struct g_sunlabel_softc *ms; 7035303Sbde struct g_slicer *gsp; 7135303Sbde 7235303Sbde gp = bp->bio_to->geom; 7350379Speter gsp = gp->softc; 7435303Sbde ms = gsp->softc; 7546548Sbde return (0); 7635303Sbde} 7735303Sbde 7835303Sbdestatic void 7935303Sbdeg_sunlabel_dumpconf(struct sbuf *sb, char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp) 80163726Sbde{ 81167905Snjl 82167905Snjl g_slice_dumpconf(sb, indent, gp, cp, pp); 83167905Snjl} 84167905Snjl 8535303Sbdestatic struct g_geom * 8635303Sbdeg_sunlabel_taste(struct g_class *mp, struct g_provider *pp, int flags) 87167905Snjl{ 88167905Snjl struct g_geom *gp; 89167905Snjl struct g_consumer *cp; 90167905Snjl struct g_provider *pp2; 91167905Snjl int error, i, npart; 92163726Sbde u_char *buf; 93163726Sbde struct g_sunlabel_softc *ms; 9446548Sbde u_int sectorsize, u, v, csize; 9535303Sbde off_t mediasize; 9635303Sbde struct g_slicer *gsp; 9735303Sbde 9835303Sbde g_trace(G_T_TOPOLOGY, "g_sunlabel_taste(%s,%s)", mp->name, pp->name); 9935303Sbde g_topology_assert(); 10035303Sbde if (flags == G_TF_NORMAL && 10135303Sbde !strcmp(pp->geom->class->name, SUNLABEL_CLASS_NAME)) 10246548Sbde return (NULL); 10335303Sbde gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_sunlabel_start); 10435303Sbde if (gp == NULL) 10535303Sbde return (NULL); 10635303Sbde gsp = gp->softc; 10735303Sbde g_topology_unlock(); 10835303Sbde gp->dumpconf = g_sunlabel_dumpconf; 10935303Sbde npart = 0; 11035303Sbde while (1) { /* a trick to allow us to use break */ 11135303Sbde if (gp->rank != 2 && flags == G_TF_NORMAL) 112163726Sbde break; 11335303Sbde error = g_getattr("GEOM::sectorsize", cp, §orsize); 11435303Sbde if (error) { 11546548Sbde sectorsize = 512; 116174067Sbde printf("g_sunlabel_taste: error %d Sectors are %d bytes\n", 11713107Sbde error, sectorsize); 118143063Sjoerg } 119163727Sbde gsp->frontstuff = 16 * sectorsize; 120143063Sjoerg error = g_getattr("GEOM::mediasize", cp, &mediasize); 12113107Sbde if (error) { 12213107Sbde mediasize = 0; 12313107Sbde printf("g_error %d Mediasize is %lld bytes\n", 12446548Sbde error, (long long)mediasize); 12513107Sbde } 12646548Sbde buf = g_read_data(cp, 0, sectorsize, &error); 12713107Sbde if (buf == NULL || error != 0) 12813107Sbde break; 129143063Sjoerg 13035303Sbde /* The second last short is a magic number */ 13135303Sbde if (g_dec_be2(buf + 508) != 0xdabe) 13235303Sbde break; 13346548Sbde /* The shortword parity of the entire thing must be even */ 13435303Sbde u = 0; 13550379Speter for (i = 0; i < 512; i += 2) 13635303Sbde u ^= g_dec_be2(buf + i); 13746548Sbde if (u != 0) 13835303Sbde break; 13935303Sbde if (bootverbose) { 14035303Sbde g_hexdump(buf, 128); 14135303Sbde for (i = 0; i < 8; i++) { 14235303Sbde printf("part %d %u %u\n", i, 14350379Speter g_dec_be4(buf + 444 + i * 8), 144163726Sbde g_dec_be4(buf + 448 + i * 8)); 145163726Sbde } 146163726Sbde printf("v_version = %d\n", g_dec_be4(buf + 128)); 14746548Sbde printf("v_nparts = %d\n", g_dec_be2(buf + 140)); 14835303Sbde for (i = 0; i < 8; i++) { 14935303Sbde printf("v_part[%d] = %d %d\n", 15035303Sbde i, g_dec_be2(buf + 142 + i * 4), 15135303Sbde g_dec_be2(buf + 144 + i * 4)); 15235303Sbde } 15335303Sbde printf("v_sanity %x\n", g_dec_be4(buf + 186)); 154163726Sbde printf("v_version = %d\n", g_dec_be4(buf + 128)); 15535303Sbde printf("v_rpm %d\n", g_dec_be2(buf + 420)); 15635303Sbde printf("v_totalcyl %d\n", g_dec_be2(buf + 422)); 15735303Sbde printf("v_cyl %d\n", g_dec_be2(buf + 432)); 15835303Sbde printf("v_alt %d\n", g_dec_be2(buf + 434)); 15946548Sbde printf("v_head %d\n", g_dec_be2(buf + 436)); 160174067Sbde printf("v_sec %d\n", g_dec_be2(buf + 438)); 16113107Sbde } 162143063Sjoerg 16313107Sbde csize = g_dec_be2(buf + 436) * g_dec_be2(buf + 438); 16413107Sbde 16513107Sbde for (i = 0; i < 8; i++) { 16613107Sbde v = g_dec_be4(buf + 444 + i * 8); 16713107Sbde u = g_dec_be4(buf + 448 + i * 8); 16819000Sbde if (u == 0) 16913107Sbde continue; 17013107Sbde npart++; 17113107Sbde g_topology_lock(); 17219000Sbde pp2 = g_slice_addslice(gp, i, 173220433Sjkim ((off_t)v * csize) << 9ULL, 174220433Sjkim ((off_t)u) << 9ULL, 17519000Sbde sectorsize, 17619000Sbde "%s%c", pp->name, 'a' + i); 17719000Sbde g_topology_unlock(); 17813107Sbde g_error_provider(pp2, 0); 17913107Sbde } 180163756Sbde break; 18132005Sphk } 182129744Sbde g_topology_lock(); 183129744Sbde error = g_access_rel(cp, -1, 0, 0); 184129744Sbde if (npart > 0) 185129744Sbde return (gp); 186129744Sbde g_std_spoiled(cp); 187129744Sbde return (NULL); 188129744Sbde} 189129744Sbde 190129744Sbdestatic struct g_class g_sunlabel_class = { 19119000Sbde SUNLABEL_CLASS_NAME, 19219000Sbde g_sunlabel_taste, 19319000Sbde NULL, 194163756Sbde G_CLASS_INITIALIZER 19519000Sbde}; 19619000Sbde 19719000SbdeDECLARE_GEOM_CLASS(g_sunlabel_class, g_sunlabel); 19819000Sbde