1/*-
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
9 * DARPA CHATS research program.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The names of the authors may not be used to endorse or promote
20 * products derived from this software without specific prior written
21 * permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $FreeBSD: head/sys/geom/geom_sunlabel.c 93358 2002-03-28 22:00:24Z phk $
36 */
37
38
39#include <sys/param.h>
40#ifndef _KERNEL
41#include <stdio.h>
42#include <string.h>
43#include <stdlib.h>
44#include <signal.h>
45#include <err.h>
46#else
47#include <sys/systm.h>
48#include <sys/kernel.h>
49#include <sys/conf.h>
50#include <sys/bio.h>
51#include <sys/malloc.h>
52#include <sys/lock.h>
53#include <sys/mutex.h>
54#endif
55#include <sys/errno.h>
56#include <geom/geom.h>
57#include <geom/geom_slice.h>
58#include <machine/endian.h>
59
60#define SUNLABEL_CLASS_NAME "SUNLABEL-class"
61
62struct g_sunlabel_softc {
63 int foo;
64};
65
66static int
67g_sunlabel_start(struct bio *bp)
68{
69 struct g_geom *gp;
70 struct g_sunlabel_softc *ms;
71 struct g_slicer *gsp;
72
73 gp = bp->bio_to->geom;
74 gsp = gp->softc;
75 ms = gsp->softc;
76 return (0);
77}
78
79static void
80g_sunlabel_dumpconf(struct sbuf *sb, char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp)
81{
82
83 g_slice_dumpconf(sb, indent, gp, cp, pp);
84}
85
86static struct g_geom *
87g_sunlabel_taste(struct g_class *mp, struct g_provider *pp, int flags)
88{
89 struct g_geom *gp;
90 struct g_consumer *cp;
91 struct g_provider *pp2;
92 int error, i, j, npart;
93 u_char *buf;
94 struct g_sunlabel_softc *ms;
95 u_int secsize, u, v, csize;
96 off_t mediasize;
97
98 g_trace(G_T_TOPOLOGY, "g_sunlabel_taste(%s,%s)", mp->name, pp->name);
99 g_topology_assert();
100 if (flags == G_TF_NORMAL &&
101 !strcmp(pp->geom->class->name, SUNLABEL_CLASS_NAME))
102 return (NULL);
103 gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_sunlabel_start);
104 if (gp == NULL)
105 return (NULL);
106 g_topology_unlock();
107 gp->dumpconf = g_sunlabel_dumpconf;
108 npart = 0;
109 while (1) { /* a trick to allow us to use break */
110 if (gp->rank != 2 && flags == G_TF_NORMAL)
111 break;
112 j = sizeof secsize;
113 error = g_io_getattr("GEOM::sectorsize", cp, &j, &secsize);
114 if (error) {
115 secsize = 512;
116 printf("g_sunlabel_taste: error %d Sectors are %d bytes\n",
117 error, secsize);
118 }
119 j = sizeof mediasize;
120 error = g_io_getattr("GEOM::mediasize", cp, &j, &mediasize);
121 if (error) {
122 mediasize = 0;
123 printf("g_error %d Mediasize is %lld bytes\n",
124 error, (long long)mediasize);
125 }
126 buf = g_read_data(cp, 0, secsize, &error);
127 if (buf == NULL || error != 0)
128 break;
129
130 /* The second last short is a magic number */
131 if (g_dec_be2(buf + 508) != 0xdabe)
132 break;
133 /* The shortword parity of the entire thing must be even */
134 u = 0;
135 for (i = 0; i < 512; i += 2)
136 u ^= g_dec_be2(buf + i);
137 if (u != 0)
138 break;
139 if (bootverbose) {
140 g_hexdump(buf, 128);
141 for (i = 0; i < 8; i++) {
142 printf("part %d %u %u\n", i,
143 g_dec_be4(buf + 444 + i * 8),
144 g_dec_be4(buf + 448 + i * 8));
145 }
146 printf("v_version = %d\n", g_dec_be4(buf + 128));
147 printf("v_nparts = %d\n", g_dec_be2(buf + 140));
148 for (i = 0; i < 8; i++) {
149 printf("v_part[%d] = %d %d\n",
150 i, g_dec_be2(buf + 142 + i * 4),
151 g_dec_be2(buf + 144 + i * 4));
152 }
153 printf("v_sanity %x\n", g_dec_be4(buf + 186));
154 printf("v_version = %d\n", g_dec_be4(buf + 128));
155 printf("v_rpm %d\n", g_dec_be2(buf + 420));
156 printf("v_totalcyl %d\n", g_dec_be2(buf + 422));
157 printf("v_cyl %d\n", g_dec_be2(buf + 432));
158 printf("v_alt %d\n", g_dec_be2(buf + 434));
159 printf("v_head %d\n", g_dec_be2(buf + 436));
160 printf("v_sec %d\n", g_dec_be2(buf + 438));
161 }
162
163 csize = g_dec_be2(buf + 436) * g_dec_be2(buf + 438);
164
165 for (i = 0; i < 8; i++) {
166 v = g_dec_be4(buf + 444 + i * 8);
167 u = g_dec_be4(buf + 448 + i * 8);
168 if (u == 0)
169 continue;
170 npart++;
171 pp2 = g_slice_addslice(gp, i,
172 ((off_t)v * csize) << 9ULL,
173 ((off_t)u) << 9ULL,
174 "%s%c", pp->name, 'a' + i);
175 g_error_provider(pp2, 0);
176 }
177 break;
178 }
179 g_topology_lock();
180 error = g_access_rel(cp, -1, 0, 0);
181 if (npart > 0)
182 return (gp);
183 g_std_spoiled(cp);
184 return (NULL);
185}
186
187static struct g_class g_sunlabel_class = {
188 SUNLABEL_CLASS_NAME,
189 g_sunlabel_taste,
190 g_slice_access,
191 g_slice_orphan,
192 NULL,
193 G_CLASS_INITSTUFF
194};
195
196DECLARE_GEOM_CLASS(g_sunlabel_class, g_sunlabel);