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_dev.c 94285 2002-04-09 15:17:59Z phk $
| 35 * $FreeBSD: head/sys/geom/geom_dev.c 94287 2002-04-09 15:43:32Z phk $
|
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/malloc.h>
41#include <sys/kernel.h>
42#include <sys/conf.h>
43#include <sys/bio.h>
44#include <sys/lock.h>
45#include <sys/mutex.h>
46#include <sys/errno.h>
47#include <sys/time.h>
48#include <sys/disk.h>
49#include <sys/fcntl.h>
50#include <geom/geom.h>
51
52#define CDEV_MAJOR 4
53
54static d_open_t g_dev_open;
55static d_close_t g_dev_close;
56static d_strategy_t g_dev_strategy;
57static d_ioctl_t g_dev_ioctl;
58static d_psize_t g_dev_psize;
59
60static struct cdevsw g_dev_cdevsw = {
61 /* open */ g_dev_open,
62 /* close */ g_dev_close,
63 /* read */ physread,
64 /* write */ physwrite,
65 /* ioctl */ g_dev_ioctl,
66 /* poll */ nopoll,
67 /* mmap */ nommap,
68 /* strategy */ g_dev_strategy,
69 /* name */ "g_dev",
70 /* maj */ CDEV_MAJOR,
71 /* dump */ nodump,
72 /* psize */ g_dev_psize,
73 /* flags */ D_DISK | D_CANFREE | D_TRACKCLOSE,
74};
75
76static g_taste_t g_dev_taste;
77static g_orphan_t g_dev_orphan;
78
79static struct g_class g_dev_class = {
80 "DEV-class",
81 g_dev_taste,
82 NULL,
83 G_CLASS_INITSTUFF
84};
85
86static void
87g_dev_clone(void *arg, char *name, int namelen, dev_t *dev)
88{
89 struct g_geom *gp;
90
91 if (*dev != NODEV)
92 return;
93
94 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s)", name);
95 g_rattle();
96
97 /* XXX: can I drop Giant here ??? */
98 /* g_topology_lock(); */
99 LIST_FOREACH(gp, &g_dev_class.geom, geom) {
100 if (strcmp(gp->name, name))
101 continue;
102 *dev = gp->softc;
103 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s) = %p", name, *dev);
104 return;
105 }
106 /* g_topology_unlock(); */
107 return;
108}
109
110static void
111g_dev_register_cloner(void *foo __unused)
112{
113 static int once;
114
115 if (!once) {
116 if (!once)
117 EVENTHANDLER_REGISTER(dev_clone, g_dev_clone, 0, 1000);
118 once++;
119 }
120}
121
122SYSINIT(geomdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE,g_dev_register_cloner,NULL);
123
124static struct g_geom *
125g_dev_taste(struct g_class *mp, struct g_provider *pp, int insist __unused)
126{
127 struct g_geom *gp;
128 struct g_consumer *cp;
129 static int unit;
130 u_int secsize;
131 off_t mediasize;
132 int error, j;
133 dev_t dev;
134
135 g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name);
136 g_topology_assert();
137 LIST_FOREACH(cp, &pp->consumers, consumers)
138 if (cp->geom->class == mp)
139 return (NULL);
140 gp = g_new_geomf(mp, pp->name);
141 gp->orphan = g_dev_orphan;
142 cp = g_new_consumer(gp);
143 g_attach(cp, pp);
144 error = g_access_rel(cp, 1, 0, 0);
145 g_topology_unlock();
146 if (!error) {
147 j = sizeof secsize;
148 error = g_io_getattr("GEOM::sectorsize", cp, &j, &secsize);
149 if (error) {
150 secsize = 512;
151 printf("g_dev_taste: error %d Sectors are %d bytes\n",
152 error, secsize);
153 }
154 j = sizeof mediasize;
155 error = g_io_getattr("GEOM::mediasize", cp, &j, &mediasize);
156 if (error) {
157 mediasize = 0;
| 36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/malloc.h>
41#include <sys/kernel.h>
42#include <sys/conf.h>
43#include <sys/bio.h>
44#include <sys/lock.h>
45#include <sys/mutex.h>
46#include <sys/errno.h>
47#include <sys/time.h>
48#include <sys/disk.h>
49#include <sys/fcntl.h>
50#include <geom/geom.h>
51
52#define CDEV_MAJOR 4
53
54static d_open_t g_dev_open;
55static d_close_t g_dev_close;
56static d_strategy_t g_dev_strategy;
57static d_ioctl_t g_dev_ioctl;
58static d_psize_t g_dev_psize;
59
60static struct cdevsw g_dev_cdevsw = {
61 /* open */ g_dev_open,
62 /* close */ g_dev_close,
63 /* read */ physread,
64 /* write */ physwrite,
65 /* ioctl */ g_dev_ioctl,
66 /* poll */ nopoll,
67 /* mmap */ nommap,
68 /* strategy */ g_dev_strategy,
69 /* name */ "g_dev",
70 /* maj */ CDEV_MAJOR,
71 /* dump */ nodump,
72 /* psize */ g_dev_psize,
73 /* flags */ D_DISK | D_CANFREE | D_TRACKCLOSE,
74};
75
76static g_taste_t g_dev_taste;
77static g_orphan_t g_dev_orphan;
78
79static struct g_class g_dev_class = {
80 "DEV-class",
81 g_dev_taste,
82 NULL,
83 G_CLASS_INITSTUFF
84};
85
86static void
87g_dev_clone(void *arg, char *name, int namelen, dev_t *dev)
88{
89 struct g_geom *gp;
90
91 if (*dev != NODEV)
92 return;
93
94 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s)", name);
95 g_rattle();
96
97 /* XXX: can I drop Giant here ??? */
98 /* g_topology_lock(); */
99 LIST_FOREACH(gp, &g_dev_class.geom, geom) {
100 if (strcmp(gp->name, name))
101 continue;
102 *dev = gp->softc;
103 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s) = %p", name, *dev);
104 return;
105 }
106 /* g_topology_unlock(); */
107 return;
108}
109
110static void
111g_dev_register_cloner(void *foo __unused)
112{
113 static int once;
114
115 if (!once) {
116 if (!once)
117 EVENTHANDLER_REGISTER(dev_clone, g_dev_clone, 0, 1000);
118 once++;
119 }
120}
121
122SYSINIT(geomdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE,g_dev_register_cloner,NULL);
123
124static struct g_geom *
125g_dev_taste(struct g_class *mp, struct g_provider *pp, int insist __unused)
126{
127 struct g_geom *gp;
128 struct g_consumer *cp;
129 static int unit;
130 u_int secsize;
131 off_t mediasize;
132 int error, j;
133 dev_t dev;
134
135 g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name);
136 g_topology_assert();
137 LIST_FOREACH(cp, &pp->consumers, consumers)
138 if (cp->geom->class == mp)
139 return (NULL);
140 gp = g_new_geomf(mp, pp->name);
141 gp->orphan = g_dev_orphan;
142 cp = g_new_consumer(gp);
143 g_attach(cp, pp);
144 error = g_access_rel(cp, 1, 0, 0);
145 g_topology_unlock();
146 if (!error) {
147 j = sizeof secsize;
148 error = g_io_getattr("GEOM::sectorsize", cp, &j, &secsize);
149 if (error) {
150 secsize = 512;
151 printf("g_dev_taste: error %d Sectors are %d bytes\n",
152 error, secsize);
153 }
154 j = sizeof mediasize;
155 error = g_io_getattr("GEOM::mediasize", cp, &j, &mediasize);
156 if (error) {
157 mediasize = 0;
|
158 printf("g_dev_taste: %d Mediasize is %lld bytes\n",
| 158 printf("g_dev_taste: error %d Mediasize is %lld bytes\n",
|
159 error, (long long)mediasize);
160 }
161 g_topology_lock();
162 g_access_rel(cp, -1, 0, 0);
163 g_topology_unlock();
164 } else {
165 secsize = 512;
166 mediasize = 0;
167 }
168 mtx_lock(&Giant);
169 if (mediasize != 0)
170 printf("GEOM: \"%s\" %lld bytes in %lld sectors of %u bytes\n",
171 pp->name, (long long)mediasize,
172 (long long)mediasize / secsize, secsize);
173 else
174 printf("GEOM: \"%s\" (size unavailable)\n", pp->name);
175 dev = make_dev(&g_dev_cdevsw, unit++,
176 UID_ROOT, GID_WHEEL, 0600, gp->name);
177 gp->softc = dev;
178 dev->si_drv1 = gp;
179 dev->si_drv2 = cp;
180 mtx_unlock(&Giant);
181 g_topology_lock();
182 return (gp);
183}
184
185static int
186g_dev_open(dev_t dev, int flags, int fmt, struct thread *td)
187{
188 struct g_geom *gp;
189 struct g_consumer *cp;
190 int error, r, w, e;
191
192 gp = dev->si_drv1;
193 cp = dev->si_drv2;
194 if (gp == NULL || cp == NULL)
195 return(ENXIO);
196 g_trace(G_T_ACCESS, "g_dev_open(%s, %d, %d, %p)",
197 gp->name, flags, fmt, td);
198 DROP_GIANT();
199 g_topology_lock();
200 g_silence();
201 r = flags & FREAD ? 1 : 0;
202 w = flags & FWRITE ? 1 : 0;
203 e = flags & O_EXCL ? 1 : 0;
204 error = g_access_rel(cp, r, w, e);
205 g_topology_unlock();
206 PICKUP_GIANT();
207 g_rattle();
208 return(error);
209}
210
211static int
212g_dev_close(dev_t dev, int flags, int fmt, struct thread *td)
213{
214 struct g_geom *gp;
215 struct g_consumer *cp;
216 int error, r, w, e;
217
218 gp = dev->si_drv1;
219 cp = dev->si_drv2;
220 if (gp == NULL || cp == NULL)
221 return(ENXIO);
222 g_trace(G_T_ACCESS, "g_dev_close(%s, %d, %d, %p)",
223 gp->name, flags, fmt, td);
224 DROP_GIANT();
225 g_topology_lock();
226 g_silence();
227 r = flags & FREAD ? -1 : 0;
228 w = flags & FWRITE ? -1 : 0;
229 e = flags & O_EXCL ? -1 : 0;
230 error = g_access_rel(cp, r, w, e);
231 g_topology_unlock();
232 PICKUP_GIANT();
233 g_rattle();
234 return (error);
235}
236
237static int
238g_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
239{
240 struct g_geom *gp;
241 struct g_consumer *cp;
242 int i, error;
243 struct g_ioctl *gio;
244
245 gp = dev->si_drv1;
246 cp = dev->si_drv2;
247
248 error = 0;
249 DROP_GIANT();
250
251 i = IOCPARM_LEN(cmd);
252 switch (cmd) {
253 case DIOCGSECTORSIZE:
254 error = g_io_getattr("GEOM::sectorsize", cp, &i, data);
255 break;
256 case DIOCGMEDIASIZE:
257 error = g_io_getattr("GEOM::mediasize", cp, &i, data);
258 break;
259 case DIOCGFWSECTORS:
260 error = g_io_getattr("GEOM::fwsectors", cp, &i, data);
261 break;
262 case DIOCGFWHEADS:
263 error = g_io_getattr("GEOM::fwheads", cp, &i, data);
264 break;
| 159 error, (long long)mediasize);
160 }
161 g_topology_lock();
162 g_access_rel(cp, -1, 0, 0);
163 g_topology_unlock();
164 } else {
165 secsize = 512;
166 mediasize = 0;
167 }
168 mtx_lock(&Giant);
169 if (mediasize != 0)
170 printf("GEOM: \"%s\" %lld bytes in %lld sectors of %u bytes\n",
171 pp->name, (long long)mediasize,
172 (long long)mediasize / secsize, secsize);
173 else
174 printf("GEOM: \"%s\" (size unavailable)\n", pp->name);
175 dev = make_dev(&g_dev_cdevsw, unit++,
176 UID_ROOT, GID_WHEEL, 0600, gp->name);
177 gp->softc = dev;
178 dev->si_drv1 = gp;
179 dev->si_drv2 = cp;
180 mtx_unlock(&Giant);
181 g_topology_lock();
182 return (gp);
183}
184
185static int
186g_dev_open(dev_t dev, int flags, int fmt, struct thread *td)
187{
188 struct g_geom *gp;
189 struct g_consumer *cp;
190 int error, r, w, e;
191
192 gp = dev->si_drv1;
193 cp = dev->si_drv2;
194 if (gp == NULL || cp == NULL)
195 return(ENXIO);
196 g_trace(G_T_ACCESS, "g_dev_open(%s, %d, %d, %p)",
197 gp->name, flags, fmt, td);
198 DROP_GIANT();
199 g_topology_lock();
200 g_silence();
201 r = flags & FREAD ? 1 : 0;
202 w = flags & FWRITE ? 1 : 0;
203 e = flags & O_EXCL ? 1 : 0;
204 error = g_access_rel(cp, r, w, e);
205 g_topology_unlock();
206 PICKUP_GIANT();
207 g_rattle();
208 return(error);
209}
210
211static int
212g_dev_close(dev_t dev, int flags, int fmt, struct thread *td)
213{
214 struct g_geom *gp;
215 struct g_consumer *cp;
216 int error, r, w, e;
217
218 gp = dev->si_drv1;
219 cp = dev->si_drv2;
220 if (gp == NULL || cp == NULL)
221 return(ENXIO);
222 g_trace(G_T_ACCESS, "g_dev_close(%s, %d, %d, %p)",
223 gp->name, flags, fmt, td);
224 DROP_GIANT();
225 g_topology_lock();
226 g_silence();
227 r = flags & FREAD ? -1 : 0;
228 w = flags & FWRITE ? -1 : 0;
229 e = flags & O_EXCL ? -1 : 0;
230 error = g_access_rel(cp, r, w, e);
231 g_topology_unlock();
232 PICKUP_GIANT();
233 g_rattle();
234 return (error);
235}
236
237static int
238g_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
239{
240 struct g_geom *gp;
241 struct g_consumer *cp;
242 int i, error;
243 struct g_ioctl *gio;
244
245 gp = dev->si_drv1;
246 cp = dev->si_drv2;
247
248 error = 0;
249 DROP_GIANT();
250
251 i = IOCPARM_LEN(cmd);
252 switch (cmd) {
253 case DIOCGSECTORSIZE:
254 error = g_io_getattr("GEOM::sectorsize", cp, &i, data);
255 break;
256 case DIOCGMEDIASIZE:
257 error = g_io_getattr("GEOM::mediasize", cp, &i, data);
258 break;
259 case DIOCGFWSECTORS:
260 error = g_io_getattr("GEOM::fwsectors", cp, &i, data);
261 break;
262 case DIOCGFWHEADS:
263 error = g_io_getattr("GEOM::fwheads", cp, &i, data);
264 break;
|
| 265 case DIOCGFRONTSTUFF:
266 error = g_io_getattr("GEOM::frontstuff", cp, &i, data);
267 break;
|
265 default:
266 gio = g_malloc(sizeof *gio, M_WAITOK);
267 gio->cmd = cmd;
268 gio->data = data;
269 gio->fflag = fflag;
270 gio->td = td;
271 i = sizeof *gio;
272 if (cmd & IOC_IN)
273 error = g_io_setattr("GEOM::ioctl", cp, i, gio);
274 else
275 error = g_io_getattr("GEOM::ioctl", cp, &i, gio);
276 g_free(gio);
277 break;
278 }
279
280 if (error != 0 && cmd == DIOCGDVIRGIN) {
281 g_topology_lock();
282 gp = g_create_geomf("BSD-class", cp->provider, NULL);
283 g_topology_unlock();
284 }
285 PICKUP_GIANT();
286 g_rattle();
287 if (error == ENOIOCTL) {
288 i = IOCGROUP(cmd);
289 printf("IOCTL(0x%lx) \"%s\"", cmd, gp->name);
290 if (i > ' ' && i <= '~')
291 printf(" '%c'", (int)IOCGROUP(cmd));
292 else
293 printf(" 0x%lx", IOCGROUP(cmd));
294 printf("/%ld ", cmd & 0xff);
295 if (cmd & IOC_IN)
296 printf("I");
297 if (cmd & IOC_OUT)
298 printf("O");
299 printf("(%ld) = ENOIOCTL\n", IOCPARM_LEN(cmd));
300 error = ENOTTY;
301 }
302 return (error);
303}
304
305static int
306g_dev_psize(dev_t dev)
307{
308 struct g_consumer *cp;
309 int i, error;
310 off_t mediasize;
311
312 cp = dev->si_drv2;
313
314 i = sizeof mediasize;
315 error = g_io_getattr("GEOM::mediasize", cp, &i, &mediasize);
316 if (error)
317 return (-1);
318 return (mediasize >> DEV_BSHIFT);
319}
320
321static void
322g_dev_done(struct bio *bp2)
323{
324 struct bio *bp;
325
326 bp = bp2->bio_linkage;
327 bp->bio_error = bp2->bio_error;
328 if (bp->bio_error != 0) {
329 g_trace(G_T_BIO, "g_dev_done(%p) had error %d",
330 bp2, bp->bio_error);
331 bp->bio_flags |= BIO_ERROR;
332 } else {
333 g_trace(G_T_BIO, "g_dev_done(%p/%p) resid %ld completed %lld",
334 bp2, bp, bp->bio_resid, bp2->bio_completed);
335 }
336 bp->bio_resid = bp->bio_bcount - bp2->bio_completed;
337 g_destroy_bio(bp2);
338 mtx_lock(&Giant);
339 biodone(bp);
340 mtx_unlock(&Giant);
341}
342
343static void
344g_dev_strategy(struct bio *bp)
345{
346 struct g_geom *gp;
347 struct g_consumer *cp;
348 struct bio *bp2;
349 dev_t dev;
350
351 dev = bp->bio_dev;
352 gp = dev->si_drv1;
353 cp = dev->si_drv2;
354 bp2 = g_clone_bio(bp);
355 bp2->bio_offset = (off_t)bp->bio_blkno << DEV_BSHIFT;
356 bp2->bio_length = (off_t)bp->bio_bcount;
357 bp2->bio_done = g_dev_done;
358 g_trace(G_T_BIO,
359 "g_dev_strategy(%p/%p) offset %lld length %lld data %p cmd %d",
360 bp, bp2, bp->bio_offset, bp2->bio_length, bp2->bio_data,
361 bp2->bio_cmd);
362 g_io_request(bp2, cp);
363}
364
365
366static void
367g_dev_orphan(struct g_consumer *cp)
368{
369 struct g_geom *gp;
370 dev_t dev;
371
372 gp = cp->geom;
373 g_trace(G_T_TOPOLOGY, "g_dev_orphan(%p(%s))", cp, gp->name);
374 g_topology_assert();
375 if (cp->biocount > 0)
376 return;
377 dev = gp->softc;
378 destroy_dev(dev);
379 if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
380 g_access_rel(cp, -cp->acr, -cp->acw, -cp->ace);
381 g_dettach(cp);
382 g_destroy_consumer(cp);
383 g_destroy_geom(gp);
384}
385
386DECLARE_GEOM_CLASS(g_dev_class, g_dev)
387
| 268 default:
269 gio = g_malloc(sizeof *gio, M_WAITOK);
270 gio->cmd = cmd;
271 gio->data = data;
272 gio->fflag = fflag;
273 gio->td = td;
274 i = sizeof *gio;
275 if (cmd & IOC_IN)
276 error = g_io_setattr("GEOM::ioctl", cp, i, gio);
277 else
278 error = g_io_getattr("GEOM::ioctl", cp, &i, gio);
279 g_free(gio);
280 break;
281 }
282
283 if (error != 0 && cmd == DIOCGDVIRGIN) {
284 g_topology_lock();
285 gp = g_create_geomf("BSD-class", cp->provider, NULL);
286 g_topology_unlock();
287 }
288 PICKUP_GIANT();
289 g_rattle();
290 if (error == ENOIOCTL) {
291 i = IOCGROUP(cmd);
292 printf("IOCTL(0x%lx) \"%s\"", cmd, gp->name);
293 if (i > ' ' && i <= '~')
294 printf(" '%c'", (int)IOCGROUP(cmd));
295 else
296 printf(" 0x%lx", IOCGROUP(cmd));
297 printf("/%ld ", cmd & 0xff);
298 if (cmd & IOC_IN)
299 printf("I");
300 if (cmd & IOC_OUT)
301 printf("O");
302 printf("(%ld) = ENOIOCTL\n", IOCPARM_LEN(cmd));
303 error = ENOTTY;
304 }
305 return (error);
306}
307
308static int
309g_dev_psize(dev_t dev)
310{
311 struct g_consumer *cp;
312 int i, error;
313 off_t mediasize;
314
315 cp = dev->si_drv2;
316
317 i = sizeof mediasize;
318 error = g_io_getattr("GEOM::mediasize", cp, &i, &mediasize);
319 if (error)
320 return (-1);
321 return (mediasize >> DEV_BSHIFT);
322}
323
324static void
325g_dev_done(struct bio *bp2)
326{
327 struct bio *bp;
328
329 bp = bp2->bio_linkage;
330 bp->bio_error = bp2->bio_error;
331 if (bp->bio_error != 0) {
332 g_trace(G_T_BIO, "g_dev_done(%p) had error %d",
333 bp2, bp->bio_error);
334 bp->bio_flags |= BIO_ERROR;
335 } else {
336 g_trace(G_T_BIO, "g_dev_done(%p/%p) resid %ld completed %lld",
337 bp2, bp, bp->bio_resid, bp2->bio_completed);
338 }
339 bp->bio_resid = bp->bio_bcount - bp2->bio_completed;
340 g_destroy_bio(bp2);
341 mtx_lock(&Giant);
342 biodone(bp);
343 mtx_unlock(&Giant);
344}
345
346static void
347g_dev_strategy(struct bio *bp)
348{
349 struct g_geom *gp;
350 struct g_consumer *cp;
351 struct bio *bp2;
352 dev_t dev;
353
354 dev = bp->bio_dev;
355 gp = dev->si_drv1;
356 cp = dev->si_drv2;
357 bp2 = g_clone_bio(bp);
358 bp2->bio_offset = (off_t)bp->bio_blkno << DEV_BSHIFT;
359 bp2->bio_length = (off_t)bp->bio_bcount;
360 bp2->bio_done = g_dev_done;
361 g_trace(G_T_BIO,
362 "g_dev_strategy(%p/%p) offset %lld length %lld data %p cmd %d",
363 bp, bp2, bp->bio_offset, bp2->bio_length, bp2->bio_data,
364 bp2->bio_cmd);
365 g_io_request(bp2, cp);
366}
367
368
369static void
370g_dev_orphan(struct g_consumer *cp)
371{
372 struct g_geom *gp;
373 dev_t dev;
374
375 gp = cp->geom;
376 g_trace(G_T_TOPOLOGY, "g_dev_orphan(%p(%s))", cp, gp->name);
377 g_topology_assert();
378 if (cp->biocount > 0)
379 return;
380 dev = gp->softc;
381 destroy_dev(dev);
382 if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
383 g_access_rel(cp, -cp->acr, -cp->acw, -cp->ace);
384 g_dettach(cp);
385 g_destroy_consumer(cp);
386 g_destroy_geom(gp);
387}
388
389DECLARE_GEOM_CLASS(g_dev_class, g_dev)
390
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