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 *
| 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_disk.c 97075 2002-05-21 19:50:04Z phk $
| 35 * $FreeBSD: head/sys/geom/geom_disk.c 97317 2002-05-26 17:35:14Z phk $
|
36 */
37
38#include "opt_geom.h"
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/kernel.h>
43#include <sys/sysctl.h>
44#include <sys/bio.h>
45#include <sys/conf.h>
46#include <sys/disk.h>
47#include <sys/malloc.h>
48#include <sys/sysctl.h>
49#include <machine/md_var.h>
50#include <sys/ctype.h>
51
52
53#include <sys/lock.h>
54#include <sys/mutex.h>
55#include <geom/geom.h>
56
57static g_access_t g_disk_access;
58
59struct g_class g_disk_class = {
60 "DISK",
61 NULL,
62 NULL,
63 G_CLASS_INITSTUFF
64};
65
66static int
67g_disk_access(struct g_provider *pp, int r, int w, int e)
68{
69 struct disk *dp;
70 dev_t dev;
71 int error;
72
73 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
74 pp->name, r, w, e);
75 g_topology_assert();
76 r += pp->acr;
77 w += pp->acw;
78 e += pp->ace;
79 dp = pp->geom->softc;
80 dev = dp->d_dev;
81 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
82 mtx_lock(&Giant);
83 error = devsw(dev)->d_open(dev, 3, 0, NULL);
84 if (error != 0)
85 printf("Opened disk %s -> %d\n", pp->name, error);
86 mtx_unlock(&Giant);
87 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
88 mtx_lock(&Giant);
89 error = devsw(dev)->d_close(dev, 3, 0, NULL);
90 if (error != 0)
91 printf("Closed disk %s -> %d\n", pp->name, error);
92 mtx_unlock(&Giant);
93 } else {
94 error = 0;
95 }
96 pp->mediasize =
97 dp->d_label.d_secsize * (off_t)dp->d_label.d_secperunit;
98 return (error);
99}
100
101static void
102g_disk_kerneldump(struct bio *bp, struct disk *dp)
103{
104 int error;
105 struct g_kerneldump *gkd;
106 struct dumperinfo di;
107
108 gkd = (struct g_kerneldump*)bp->bio_data;
109 printf("Kerneldump off=%lld len=%lld\n", gkd->offset, gkd->length);
110 di.dumper = (dumper_t *)dp->d_devsw->d_dump;
111 di.priv = dp->d_dev;
112 di.blocksize = dp->d_label.d_secsize;
113 di.mediaoffset = gkd->offset;
114 di.mediasize = gkd->length;
115 error = set_dumper(&di);
116 g_io_fail(bp, error);
117}
118
119static void
120g_disk_done(struct bio *bp)
121{
122
123 mtx_unlock(&Giant);
124 bp->bio_completed = bp->bio_length - bp->bio_resid;
125 g_std_done(bp);
126 mtx_lock(&Giant);
127}
128
129static void
130g_disk_start(struct bio *bp)
131{
132 struct bio *bp2;
133 dev_t dev;
134 struct disk *dp;
135 struct g_ioctl *gio;
136 int error;
137
138 dp = bp->bio_to->geom->softc;
139 dev = dp->d_dev;
140 error = 0;
141 switch(bp->bio_cmd) {
142 case BIO_READ:
143 case BIO_WRITE:
144 bp2 = g_clone_bio(bp);
145 bp2->bio_done = g_disk_done;
146 bp2->bio_blkno = bp2->bio_offset >> DEV_BSHIFT;
147 bp2->bio_pblkno = bp2->bio_blkno;
148 bp2->bio_bcount = bp2->bio_length;
149 bp2->bio_dev = dev;
150 mtx_lock(&Giant);
151 devsw(dev)->d_strategy(bp2);
152 mtx_unlock(&Giant);
153 break;
154 case BIO_GETATTR:
155 if (g_haveattr_int(bp, "GEOM::sectorsize",
156 dp->d_label.d_secsize))
157 break;
158 else if (g_haveattr_int(bp, "GEOM::fwsectors",
159 dp->d_label.d_nsectors))
160 break;
161 else if (g_haveattr_int(bp, "GEOM::fwheads",
162 dp->d_label.d_ntracks))
163 break;
164 else if (g_haveattr_off_t(bp, "GEOM::mediasize",
165 dp->d_label.d_secsize * (off_t)dp->d_label.d_secperunit))
166 break;
167 else if (g_haveattr_off_t(bp, "GEOM::frontstuff", 0))
168 break;
169 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
170 g_disk_kerneldump(bp, dp);
171 else if (!strcmp(bp->bio_attribute, "GEOM::ioctl") &&
172 bp->bio_length == sizeof *gio) {
173 gio = (struct g_ioctl *)bp->bio_data;
174 mtx_lock(&Giant);
175 error = devsw(dev)->d_ioctl(dev, gio->cmd,
176 gio->data, gio->fflag, gio->td);
177 mtx_unlock(&Giant);
178 } else
179 error = ENOIOCTL;
180 break;
181 default:
182 error = EOPNOTSUPP;
183 break;
184 }
185 if (error) {
186 bp->bio_error = error;
187 g_io_deliver(bp);
188 }
189 return;
190}
191
192dev_t
193disk_create(int unit, struct disk *dp, int flags, struct cdevsw *cdevsw, struct cdevsw *proto)
194{
195 static int once;
196 struct g_geom *gp;
197 struct g_provider *pp;
198 dev_t dev;
199
200 mtx_unlock(&Giant);
201 if (!once) {
202 g_add_class(&g_disk_class);
203 once++;
204 }
205 dev = g_malloc(sizeof *dev, M_WAITOK | M_ZERO);
206 dp->d_dev = dev;
207 dp->d_devsw = cdevsw;
208 dev->si_devsw = cdevsw;
209 dev->si_disk = dp;
210 dev->si_udev = dkmakeminor(unit, WHOLE_DISK_SLICE, RAW_PART);
211 g_topology_lock();
212 gp = g_new_geomf(&g_disk_class, "%s%d", cdevsw->d_name, unit);
| 36 */
37
38#include "opt_geom.h"
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/kernel.h>
43#include <sys/sysctl.h>
44#include <sys/bio.h>
45#include <sys/conf.h>
46#include <sys/disk.h>
47#include <sys/malloc.h>
48#include <sys/sysctl.h>
49#include <machine/md_var.h>
50#include <sys/ctype.h>
51
52
53#include <sys/lock.h>
54#include <sys/mutex.h>
55#include <geom/geom.h>
56
57static g_access_t g_disk_access;
58
59struct g_class g_disk_class = {
60 "DISK",
61 NULL,
62 NULL,
63 G_CLASS_INITSTUFF
64};
65
66static int
67g_disk_access(struct g_provider *pp, int r, int w, int e)
68{
69 struct disk *dp;
70 dev_t dev;
71 int error;
72
73 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
74 pp->name, r, w, e);
75 g_topology_assert();
76 r += pp->acr;
77 w += pp->acw;
78 e += pp->ace;
79 dp = pp->geom->softc;
80 dev = dp->d_dev;
81 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
82 mtx_lock(&Giant);
83 error = devsw(dev)->d_open(dev, 3, 0, NULL);
84 if (error != 0)
85 printf("Opened disk %s -> %d\n", pp->name, error);
86 mtx_unlock(&Giant);
87 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
88 mtx_lock(&Giant);
89 error = devsw(dev)->d_close(dev, 3, 0, NULL);
90 if (error != 0)
91 printf("Closed disk %s -> %d\n", pp->name, error);
92 mtx_unlock(&Giant);
93 } else {
94 error = 0;
95 }
96 pp->mediasize =
97 dp->d_label.d_secsize * (off_t)dp->d_label.d_secperunit;
98 return (error);
99}
100
101static void
102g_disk_kerneldump(struct bio *bp, struct disk *dp)
103{
104 int error;
105 struct g_kerneldump *gkd;
106 struct dumperinfo di;
107
108 gkd = (struct g_kerneldump*)bp->bio_data;
109 printf("Kerneldump off=%lld len=%lld\n", gkd->offset, gkd->length);
110 di.dumper = (dumper_t *)dp->d_devsw->d_dump;
111 di.priv = dp->d_dev;
112 di.blocksize = dp->d_label.d_secsize;
113 di.mediaoffset = gkd->offset;
114 di.mediasize = gkd->length;
115 error = set_dumper(&di);
116 g_io_fail(bp, error);
117}
118
119static void
120g_disk_done(struct bio *bp)
121{
122
123 mtx_unlock(&Giant);
124 bp->bio_completed = bp->bio_length - bp->bio_resid;
125 g_std_done(bp);
126 mtx_lock(&Giant);
127}
128
129static void
130g_disk_start(struct bio *bp)
131{
132 struct bio *bp2;
133 dev_t dev;
134 struct disk *dp;
135 struct g_ioctl *gio;
136 int error;
137
138 dp = bp->bio_to->geom->softc;
139 dev = dp->d_dev;
140 error = 0;
141 switch(bp->bio_cmd) {
142 case BIO_READ:
143 case BIO_WRITE:
144 bp2 = g_clone_bio(bp);
145 bp2->bio_done = g_disk_done;
146 bp2->bio_blkno = bp2->bio_offset >> DEV_BSHIFT;
147 bp2->bio_pblkno = bp2->bio_blkno;
148 bp2->bio_bcount = bp2->bio_length;
149 bp2->bio_dev = dev;
150 mtx_lock(&Giant);
151 devsw(dev)->d_strategy(bp2);
152 mtx_unlock(&Giant);
153 break;
154 case BIO_GETATTR:
155 if (g_haveattr_int(bp, "GEOM::sectorsize",
156 dp->d_label.d_secsize))
157 break;
158 else if (g_haveattr_int(bp, "GEOM::fwsectors",
159 dp->d_label.d_nsectors))
160 break;
161 else if (g_haveattr_int(bp, "GEOM::fwheads",
162 dp->d_label.d_ntracks))
163 break;
164 else if (g_haveattr_off_t(bp, "GEOM::mediasize",
165 dp->d_label.d_secsize * (off_t)dp->d_label.d_secperunit))
166 break;
167 else if (g_haveattr_off_t(bp, "GEOM::frontstuff", 0))
168 break;
169 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
170 g_disk_kerneldump(bp, dp);
171 else if (!strcmp(bp->bio_attribute, "GEOM::ioctl") &&
172 bp->bio_length == sizeof *gio) {
173 gio = (struct g_ioctl *)bp->bio_data;
174 mtx_lock(&Giant);
175 error = devsw(dev)->d_ioctl(dev, gio->cmd,
176 gio->data, gio->fflag, gio->td);
177 mtx_unlock(&Giant);
178 } else
179 error = ENOIOCTL;
180 break;
181 default:
182 error = EOPNOTSUPP;
183 break;
184 }
185 if (error) {
186 bp->bio_error = error;
187 g_io_deliver(bp);
188 }
189 return;
190}
191
192dev_t
193disk_create(int unit, struct disk *dp, int flags, struct cdevsw *cdevsw, struct cdevsw *proto)
194{
195 static int once;
196 struct g_geom *gp;
197 struct g_provider *pp;
198 dev_t dev;
199
200 mtx_unlock(&Giant);
201 if (!once) {
202 g_add_class(&g_disk_class);
203 once++;
204 }
205 dev = g_malloc(sizeof *dev, M_WAITOK | M_ZERO);
206 dp->d_dev = dev;
207 dp->d_devsw = cdevsw;
208 dev->si_devsw = cdevsw;
209 dev->si_disk = dp;
210 dev->si_udev = dkmakeminor(unit, WHOLE_DISK_SLICE, RAW_PART);
211 g_topology_lock();
212 gp = g_new_geomf(&g_disk_class, "%s%d", cdevsw->d_name, unit);
|
| 213 strcpy(dev->si_name, gp->name);
|
213 gp->start = g_disk_start;
214 gp->access = g_disk_access;
215 gp->softc = dp;
216 dp->d_softc = gp;
217 pp = g_new_providerf(gp, "%s", gp->name);
218 g_error_provider(pp, 0);
219 g_topology_unlock();
220 mtx_lock(&Giant);
221 return (dev);
222}
223
224void disk_dev_synth(dev_t dev);
225
226void
227disk_dev_synth(dev_t dev)
228{
229
230 return;
231}
232
233void
234disk_destroy(dev_t dev)
235{
236 struct disk *dp;
237 struct g_geom *gp;
238
239 dp = dev->si_disk;
240 gp = dp->d_softc;
241 g_free(dev);
242 gp->flags |= G_GEOM_WITHER;
243 g_orphan_provider(LIST_FIRST(&gp->provider), ENXIO);
244}
245
246void
247disk_invalidate (struct disk *disk)
248{
249}
250
251
252SYSCTL_INT(_debug_sizeof, OID_AUTO, disklabel, CTLFLAG_RD,
253 0, sizeof(struct disklabel), "sizeof(struct disklabel)");
254
255SYSCTL_INT(_debug_sizeof, OID_AUTO, diskslices, CTLFLAG_RD,
256 0, sizeof(struct diskslices), "sizeof(struct diskslices)");
257
258SYSCTL_INT(_debug_sizeof, OID_AUTO, disk, CTLFLAG_RD,
259 0, sizeof(struct disk), "sizeof(struct disk)");
| 214 gp->start = g_disk_start;
215 gp->access = g_disk_access;
216 gp->softc = dp;
217 dp->d_softc = gp;
218 pp = g_new_providerf(gp, "%s", gp->name);
219 g_error_provider(pp, 0);
220 g_topology_unlock();
221 mtx_lock(&Giant);
222 return (dev);
223}
224
225void disk_dev_synth(dev_t dev);
226
227void
228disk_dev_synth(dev_t dev)
229{
230
231 return;
232}
233
234void
235disk_destroy(dev_t dev)
236{
237 struct disk *dp;
238 struct g_geom *gp;
239
240 dp = dev->si_disk;
241 gp = dp->d_softc;
242 g_free(dev);
243 gp->flags |= G_GEOM_WITHER;
244 g_orphan_provider(LIST_FIRST(&gp->provider), ENXIO);
245}
246
247void
248disk_invalidate (struct disk *disk)
249{
250}
251
252
253SYSCTL_INT(_debug_sizeof, OID_AUTO, disklabel, CTLFLAG_RD,
254 0, sizeof(struct disklabel), "sizeof(struct disklabel)");
255
256SYSCTL_INT(_debug_sizeof, OID_AUTO, diskslices, CTLFLAG_RD,
257 0, sizeof(struct diskslices), "sizeof(struct diskslices)");
258
259SYSCTL_INT(_debug_sizeof, OID_AUTO, disk, CTLFLAG_RD,
260 0, sizeof(struct disk), "sizeof(struct disk)");
|