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 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
| 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 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
|
34__FBSDID("$FreeBSD: head/sys/geom/geom_pc98.c 116196 2003-06-11 06:49:16Z obrien $");
| 34__FBSDID("$FreeBSD: head/sys/geom/geom_pc98.c 119660 2003-09-01 20:45:32Z phk $");
|
35
36#include <sys/param.h>
37#include <sys/endian.h>
38#include <sys/systm.h>
39#include <sys/kernel.h>
40#include <sys/malloc.h>
41#include <sys/bio.h>
42#include <sys/lock.h>
43#include <sys/mutex.h>
44
45#include <sys/diskpc98.h>
46#include <geom/geom.h>
47#include <geom/geom_slice.h>
48
49#define PC98_CLASS_NAME "PC98"
50
51struct g_pc98_softc {
52 u_int fwsectors, fwheads, sectorsize;
53 int type[NDOSPART];
54 u_char sec[8192];
55};
56
57static void
58g_pc98_print(int i, struct pc98_partition *dp)
59{
60 char sname[17];
61
62 strncpy(sname, dp->dp_name, 16);
63 sname[16] = '\0';
64
65 g_hexdump(dp, sizeof(dp[0]));
66 printf("[%d] mid:%d(0x%x) sid:%d(0x%x)",
67 i, dp->dp_mid, dp->dp_mid, dp->dp_sid, dp->dp_sid);
68 printf(" s:%d/%d/%d", dp->dp_scyl, dp->dp_shd, dp->dp_ssect);
69 printf(" e:%d/%d/%d", dp->dp_ecyl, dp->dp_ehd, dp->dp_esect);
70 printf(" sname:%s\n", sname);
71}
72
73static int
74g_pc98_modify(struct g_geom *gp, struct g_pc98_softc *ms, u_char *sec)
75{
76 int i, error;
77 off_t s[NDOSPART], l[NDOSPART];
78 struct pc98_partition dp[NDOSPART];
79
80 g_topology_assert();
81
82 if (sec[0x1fe] != 0x55 || sec[0x1ff] != 0xaa)
83 return (EBUSY);
84
85#if 0
86 /*
87 * XXX: Some sources indicate this is a magic sequence, but appearantly
88 * XXX: it is not universal. Documentation would be wonderful to have.
89 */
90 if (sec[4] != 'I' || sec[5] != 'P' || sec[6] != 'L' || sec[7] != '1')
91 return (EBUSY);
92#endif
93
94 for (i = 0; i < NDOSPART; i++)
95 pc98_partition_dec(
96 sec + 512 + i * sizeof(struct pc98_partition), &dp[i]);
97
98 for (i = 0; i < NDOSPART; i++) {
99 /* If start and end are identical it's bogus */
100 if (dp[i].dp_ssect == dp[i].dp_esect &&
101 dp[i].dp_shd == dp[i].dp_ehd &&
102 dp[i].dp_scyl == dp[i].dp_ecyl)
103 s[i] = l[i] = 0;
104 else if (dp[i].dp_ecyl == 0)
105 s[i] = l[i] = 0;
106 else {
107 s[i] = (off_t)dp[i].dp_scyl *
108 ms->fwsectors * ms->fwheads * ms->sectorsize;
109 l[i] = (off_t)(dp[i].dp_ecyl - dp[i].dp_scyl + 1) *
110 ms->fwsectors * ms->fwheads * ms->sectorsize;
111 }
112 if (bootverbose) {
113 printf("PC98 Slice %d on %s:\n", i + 1, gp->name);
114 g_pc98_print(i, dp + i);
115 }
116 if (s[i] < 0 || l[i] < 0)
117 error = EBUSY;
118 else
119 error = g_slice_config(gp, i, G_SLICE_CONFIG_CHECK,
120 s[i], l[i], ms->sectorsize,
121 "%ss%d", gp->name, i + 1);
122 if (error)
123 return (error);
124 }
125
126 for (i = 0; i < NDOSPART; i++) {
127 ms->type[i] = (dp[i].dp_sid << 8) | dp[i].dp_mid;
128 g_slice_config(gp, i, G_SLICE_CONFIG_SET, s[i], l[i],
129 ms->sectorsize, "%ss%d", gp->name, i + 1);
130 }
131
132 bcopy(sec, ms->sec, sizeof (ms->sec));
133
134 return (0);
135}
136
| 35
36#include <sys/param.h>
37#include <sys/endian.h>
38#include <sys/systm.h>
39#include <sys/kernel.h>
40#include <sys/malloc.h>
41#include <sys/bio.h>
42#include <sys/lock.h>
43#include <sys/mutex.h>
44
45#include <sys/diskpc98.h>
46#include <geom/geom.h>
47#include <geom/geom_slice.h>
48
49#define PC98_CLASS_NAME "PC98"
50
51struct g_pc98_softc {
52 u_int fwsectors, fwheads, sectorsize;
53 int type[NDOSPART];
54 u_char sec[8192];
55};
56
57static void
58g_pc98_print(int i, struct pc98_partition *dp)
59{
60 char sname[17];
61
62 strncpy(sname, dp->dp_name, 16);
63 sname[16] = '\0';
64
65 g_hexdump(dp, sizeof(dp[0]));
66 printf("[%d] mid:%d(0x%x) sid:%d(0x%x)",
67 i, dp->dp_mid, dp->dp_mid, dp->dp_sid, dp->dp_sid);
68 printf(" s:%d/%d/%d", dp->dp_scyl, dp->dp_shd, dp->dp_ssect);
69 printf(" e:%d/%d/%d", dp->dp_ecyl, dp->dp_ehd, dp->dp_esect);
70 printf(" sname:%s\n", sname);
71}
72
73static int
74g_pc98_modify(struct g_geom *gp, struct g_pc98_softc *ms, u_char *sec)
75{
76 int i, error;
77 off_t s[NDOSPART], l[NDOSPART];
78 struct pc98_partition dp[NDOSPART];
79
80 g_topology_assert();
81
82 if (sec[0x1fe] != 0x55 || sec[0x1ff] != 0xaa)
83 return (EBUSY);
84
85#if 0
86 /*
87 * XXX: Some sources indicate this is a magic sequence, but appearantly
88 * XXX: it is not universal. Documentation would be wonderful to have.
89 */
90 if (sec[4] != 'I' || sec[5] != 'P' || sec[6] != 'L' || sec[7] != '1')
91 return (EBUSY);
92#endif
93
94 for (i = 0; i < NDOSPART; i++)
95 pc98_partition_dec(
96 sec + 512 + i * sizeof(struct pc98_partition), &dp[i]);
97
98 for (i = 0; i < NDOSPART; i++) {
99 /* If start and end are identical it's bogus */
100 if (dp[i].dp_ssect == dp[i].dp_esect &&
101 dp[i].dp_shd == dp[i].dp_ehd &&
102 dp[i].dp_scyl == dp[i].dp_ecyl)
103 s[i] = l[i] = 0;
104 else if (dp[i].dp_ecyl == 0)
105 s[i] = l[i] = 0;
106 else {
107 s[i] = (off_t)dp[i].dp_scyl *
108 ms->fwsectors * ms->fwheads * ms->sectorsize;
109 l[i] = (off_t)(dp[i].dp_ecyl - dp[i].dp_scyl + 1) *
110 ms->fwsectors * ms->fwheads * ms->sectorsize;
111 }
112 if (bootverbose) {
113 printf("PC98 Slice %d on %s:\n", i + 1, gp->name);
114 g_pc98_print(i, dp + i);
115 }
116 if (s[i] < 0 || l[i] < 0)
117 error = EBUSY;
118 else
119 error = g_slice_config(gp, i, G_SLICE_CONFIG_CHECK,
120 s[i], l[i], ms->sectorsize,
121 "%ss%d", gp->name, i + 1);
122 if (error)
123 return (error);
124 }
125
126 for (i = 0; i < NDOSPART; i++) {
127 ms->type[i] = (dp[i].dp_sid << 8) | dp[i].dp_mid;
128 g_slice_config(gp, i, G_SLICE_CONFIG_SET, s[i], l[i],
129 ms->sectorsize, "%ss%d", gp->name, i + 1);
130 }
131
132 bcopy(sec, ms->sec, sizeof (ms->sec));
133
134 return (0);
135}
136
|
137static void
138g_pc98_ioctl(void *arg, int flag)
| 137static int
138g_pc98_ioctl(struct g_provider *pp, u_long cmd, void *data, struct thread *td)
|
139{
| 139{
|
140 struct bio *bp;
| |
141 struct g_geom *gp;
| 140 struct g_geom *gp;
|
142 struct g_slicer *gsp;
| |
143 struct g_pc98_softc *ms;
| 141 struct g_pc98_softc *ms;
|
144 struct g_ioctl *gio;
| 142 struct g_slicer *gsp;
|
145 struct g_consumer *cp;
| 143 struct g_consumer *cp;
|
146 u_char *sec;
| |
147 int error;
148
| 144 int error;
145
|
149 bp = arg;
150 if (flag == EV_CANCEL) {
151 g_io_deliver(bp, ENXIO);
152 return;
153 }
154 gp = bp->bio_to->geom;
| 146 gp = pp->geom;
|
155 gsp = gp->softc;
156 ms = gsp->softc;
| 147 gsp = gp->softc;
148 ms = gsp->softc;
|
157 gio = (struct g_ioctl *)bp->bio_data;
| |
158
| 149
|
159 /* The disklabel to set is the ioctl argument. */
160 sec = gio->data;
161
162 error = g_pc98_modify(gp, ms, sec);
163 if (error) {
164 g_io_deliver(bp, error);
165 return;
| 150 switch(cmd) {
151 case DIOCSPC98: {
152 DROP_GIANT();
153 g_topology_lock();
154 /* Validate and modify our slicer instance to match. */
155 error = g_pc98_modify(gp, ms, data);
156 cp = LIST_FIRST(&gp->consumer);
157 error = g_write_data(cp, 0, data, 8192);
158 g_topology_unlock();
159 PICKUP_GIANT();
160 return(error);
|
166 }
| 161 }
|
167 cp = LIST_FIRST(&gp->consumer);
168 error = g_write_data(cp, 0, sec, 8192);
169 g_io_deliver(bp, error);
| 162 default:
163 return (ENOIOCTL);
164 }
|
170}
171
172static int
173g_pc98_start(struct bio *bp)
174{
175 struct g_provider *pp;
176 struct g_geom *gp;
177 struct g_pc98_softc *mp;
178 struct g_slicer *gsp;
| 165}
166
167static int
168g_pc98_start(struct bio *bp)
169{
170 struct g_provider *pp;
171 struct g_geom *gp;
172 struct g_pc98_softc *mp;
173 struct g_slicer *gsp;
|
179 struct g_ioctl *gio;
180 int idx, error;
| 174 int idx;
|
181
182 pp = bp->bio_to;
183 idx = pp->index;
184 gp = pp->geom;
185 gsp = gp->softc;
186 mp = gsp->softc;
187 if (bp->bio_cmd == BIO_GETATTR) {
188 if (g_handleattr_int(bp, "PC98::type", mp->type[idx]))
189 return (1);
190 if (g_handleattr_off_t(bp, "PC98::offset",
191 gsp->slices[idx].offset))
192 return (1);
193 }
194
| 175
176 pp = bp->bio_to;
177 idx = pp->index;
178 gp = pp->geom;
179 gsp = gp->softc;
180 mp = gsp->softc;
181 if (bp->bio_cmd == BIO_GETATTR) {
182 if (g_handleattr_int(bp, "PC98::type", mp->type[idx]))
183 return (1);
184 if (g_handleattr_off_t(bp, "PC98::offset",
185 gsp->slices[idx].offset))
186 return (1);
187 }
188
|
195 /* We only handle ioctl(2) requests of the right format. */
196 if (strcmp(bp->bio_attribute, "GEOM::ioctl"))
197 return (0);
198 else if (bp->bio_length != sizeof(*gio))
199 return (0);
200 /* Get hold of the ioctl parameters. */
201 gio = (struct g_ioctl *)bp->bio_data;
202
203 switch (gio->cmd) {
204 case DIOCSPC98:
205 /*
206 * These we cannot do without the topology lock and some
207 * some I/O requests. Ask the event-handler to schedule
208 * us in a less restricted environment.
209 */
210 error = g_post_event(g_pc98_ioctl, bp, M_NOWAIT, gp, NULL);
211 if (error)
212 g_io_deliver(bp, error);
213 /*
214 * We must return non-zero to indicate that we will deal
215 * with this bio, even though we have not done so yet.
216 */
217 return (1);
218 default:
219 return (0);
220 }
| 189 return (0);
|
221}
222
223static void
224g_pc98_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
225 struct g_consumer *cp __unused, struct g_provider *pp)
226{
227 struct g_pc98_softc *mp;
228 struct g_slicer *gsp;
229 struct pc98_partition dp;
230 char sname[17];
231
232 gsp = gp->softc;
233 mp = gsp->softc;
234 g_slice_dumpconf(sb, indent, gp, cp, pp);
235 if (pp != NULL) {
236 pc98_partition_dec(
237 mp->sec + 512 +
238 pp->index * sizeof(struct pc98_partition), &dp);
239 strncpy(sname, dp.dp_name, 16);
240 sname[16] = '\0';
241 if (indent == NULL) {
242 sbuf_printf(sb, " ty %d", mp->type[pp->index]);
243 sbuf_printf(sb, " sn %s", sname);
244 } else {
245 sbuf_printf(sb, "%s<type>%d</type>\n", indent,
246 mp->type[pp->index]);
247 sbuf_printf(sb, "%s<sname>%s</sname>\n", indent,
248 sname);
249 }
250 }
251}
252
253static struct g_geom *
254g_pc98_taste(struct g_class *mp, struct g_provider *pp, int flags)
255{
256 struct g_geom *gp;
257 struct g_consumer *cp;
258 int error;
259 struct g_pc98_softc *ms;
260 u_int fwsectors, fwheads, sectorsize;
261 u_char *buf;
262
263 g_trace(G_T_TOPOLOGY, "g_pc98_taste(%s,%s)", mp->name, pp->name);
264 g_topology_assert();
265 if (flags == G_TF_NORMAL &&
266 !strcmp(pp->geom->class->name, PC98_CLASS_NAME))
267 return (NULL);
268 gp = g_slice_new(mp, NDOSPART, pp, &cp, &ms, sizeof *ms, g_pc98_start);
269 if (gp == NULL)
270 return (NULL);
271 g_topology_unlock();
272 gp->dumpconf = g_pc98_dumpconf;
| 190}
191
192static void
193g_pc98_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
194 struct g_consumer *cp __unused, struct g_provider *pp)
195{
196 struct g_pc98_softc *mp;
197 struct g_slicer *gsp;
198 struct pc98_partition dp;
199 char sname[17];
200
201 gsp = gp->softc;
202 mp = gsp->softc;
203 g_slice_dumpconf(sb, indent, gp, cp, pp);
204 if (pp != NULL) {
205 pc98_partition_dec(
206 mp->sec + 512 +
207 pp->index * sizeof(struct pc98_partition), &dp);
208 strncpy(sname, dp.dp_name, 16);
209 sname[16] = '\0';
210 if (indent == NULL) {
211 sbuf_printf(sb, " ty %d", mp->type[pp->index]);
212 sbuf_printf(sb, " sn %s", sname);
213 } else {
214 sbuf_printf(sb, "%s<type>%d</type>\n", indent,
215 mp->type[pp->index]);
216 sbuf_printf(sb, "%s<sname>%s</sname>\n", indent,
217 sname);
218 }
219 }
220}
221
222static struct g_geom *
223g_pc98_taste(struct g_class *mp, struct g_provider *pp, int flags)
224{
225 struct g_geom *gp;
226 struct g_consumer *cp;
227 int error;
228 struct g_pc98_softc *ms;
229 u_int fwsectors, fwheads, sectorsize;
230 u_char *buf;
231
232 g_trace(G_T_TOPOLOGY, "g_pc98_taste(%s,%s)", mp->name, pp->name);
233 g_topology_assert();
234 if (flags == G_TF_NORMAL &&
235 !strcmp(pp->geom->class->name, PC98_CLASS_NAME))
236 return (NULL);
237 gp = g_slice_new(mp, NDOSPART, pp, &cp, &ms, sizeof *ms, g_pc98_start);
238 if (gp == NULL)
239 return (NULL);
240 g_topology_unlock();
241 gp->dumpconf = g_pc98_dumpconf;
|
| 242 gp->ioctl = g_pc98_ioctl;
|
273 do {
274 if (gp->rank != 2 && flags == G_TF_NORMAL)
275 break;
276 error = g_getattr("GEOM::fwsectors", cp, &fwsectors);
277 if (error || fwsectors == 0) {
278 fwsectors = 17;
279 if (bootverbose)
280 printf("g_pc98_taste: guessing %d sectors\n",
281 fwsectors);
282 }
283 error = g_getattr("GEOM::fwheads", cp, &fwheads);
284 if (error || fwheads == 0) {
285 fwheads = 8;
286 if (bootverbose)
287 printf("g_pc98_taste: guessing %d heads\n",
288 fwheads);
289 }
290 sectorsize = cp->provider->sectorsize;
291 if (sectorsize < 512)
292 break;
293 buf = g_read_data(cp, 0, 8192, &error);
294 if (buf == NULL || error != 0)
295 break;
296 ms->fwsectors = fwsectors;
297 ms->fwheads = fwheads;
298 ms->sectorsize = sectorsize;
299 g_topology_lock();
300 g_pc98_modify(gp, ms, buf);
301 g_topology_unlock();
302 g_free(buf);
303 break;
304 } while (0);
305 g_topology_lock();
306 g_access_rel(cp, -1, 0, 0);
307 if (LIST_EMPTY(&gp->provider)) {
308 g_slice_spoiled(cp);
309 return (NULL);
310 }
311 return (gp);
312}
313
314static struct g_class g_pc98_class = {
315 .name = PC98_CLASS_NAME,
316 .taste = g_pc98_taste,
317};
318
319DECLARE_GEOM_CLASS(g_pc98_class, g_pc98);
| 243 do {
244 if (gp->rank != 2 && flags == G_TF_NORMAL)
245 break;
246 error = g_getattr("GEOM::fwsectors", cp, &fwsectors);
247 if (error || fwsectors == 0) {
248 fwsectors = 17;
249 if (bootverbose)
250 printf("g_pc98_taste: guessing %d sectors\n",
251 fwsectors);
252 }
253 error = g_getattr("GEOM::fwheads", cp, &fwheads);
254 if (error || fwheads == 0) {
255 fwheads = 8;
256 if (bootverbose)
257 printf("g_pc98_taste: guessing %d heads\n",
258 fwheads);
259 }
260 sectorsize = cp->provider->sectorsize;
261 if (sectorsize < 512)
262 break;
263 buf = g_read_data(cp, 0, 8192, &error);
264 if (buf == NULL || error != 0)
265 break;
266 ms->fwsectors = fwsectors;
267 ms->fwheads = fwheads;
268 ms->sectorsize = sectorsize;
269 g_topology_lock();
270 g_pc98_modify(gp, ms, buf);
271 g_topology_unlock();
272 g_free(buf);
273 break;
274 } while (0);
275 g_topology_lock();
276 g_access_rel(cp, -1, 0, 0);
277 if (LIST_EMPTY(&gp->provider)) {
278 g_slice_spoiled(cp);
279 return (NULL);
280 }
281 return (gp);
282}
283
284static struct g_class g_pc98_class = {
285 .name = PC98_CLASS_NAME,
286 .taste = g_pc98_taste,
287};
288
289DECLARE_GEOM_CLASS(g_pc98_class, g_pc98);
|