2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2002 Poul-Henning Kamp
5 * Copyright (c) 2002 Networks Associates Technology, Inc.
8 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
9 * and NAI Labs, the Security Research Division of Network Associates, Inc.
10 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
11 * DARPA CHATS research program.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. The names of the authors may not be used to endorse or promote
22 * products derived from this software without specific prior written
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/malloc.h>
44 #include <sys/kernel.h>
46 #include <sys/ctype.h>
50 #include <sys/mutex.h>
52 #include <sys/errno.h>
55 #include <sys/fcntl.h>
56 #include <sys/limits.h>
57 #include <sys/sysctl.h>
58 #include <geom/geom.h>
59 #include <geom/geom_int.h>
60 #include <machine/stdarg.h>
65 struct cdev *sc_alias;
68 #define SC_A_DESTROY (1 << 31)
69 #define SC_A_OPEN (1 << 30)
70 #define SC_A_ACTIVE (SC_A_OPEN - 1)
73 static d_open_t g_dev_open;
74 static d_close_t g_dev_close;
75 static d_strategy_t g_dev_strategy;
76 static d_ioctl_t g_dev_ioctl;
78 static struct cdevsw g_dev_cdevsw = {
79 .d_version = D_VERSION,
81 .d_close = g_dev_close,
84 .d_ioctl = g_dev_ioctl,
85 .d_strategy = g_dev_strategy,
87 .d_flags = D_DISK | D_TRACKCLOSE,
90 static g_init_t g_dev_init;
91 static g_fini_t g_dev_fini;
92 static g_taste_t g_dev_taste;
93 static g_orphan_t g_dev_orphan;
94 static g_attrchanged_t g_dev_attrchanged;
95 static g_resize_t g_dev_resize;
97 static struct g_class g_dev_class = {
102 .taste = g_dev_taste,
103 .orphan = g_dev_orphan,
104 .attrchanged = g_dev_attrchanged,
105 .resize = g_dev_resize
109 * We target 262144 (8 x 32768) sectors by default as this significantly
110 * increases the throughput on commonly used SSD's with a marginal
111 * increase in non-interruptible request latency.
113 static uint64_t g_dev_del_max_sectors = 262144;
114 SYSCTL_DECL(_kern_geom);
115 SYSCTL_NODE(_kern_geom, OID_AUTO, dev, CTLFLAG_RW, 0, "GEOM_DEV stuff");
116 SYSCTL_QUAD(_kern_geom_dev, OID_AUTO, delete_max_sectors, CTLFLAG_RW,
117 &g_dev_del_max_sectors, 0, "Maximum number of sectors in a single "
118 "delete request sent to the provider. Larger requests are chunked "
119 "so they can be interrupted. (0 = disable chunking)");
121 static char *dumpdev = NULL;
123 g_dev_init(struct g_class *mp)
126 dumpdev = kern_getenv("dumpdev");
130 g_dev_fini(struct g_class *mp)
138 g_dev_setdumpdev(struct cdev *dev, struct diocskerneldump_arg *kda,
141 struct g_kerneldump kd;
142 struct g_consumer *cp;
145 if (dev == NULL || kda == NULL)
146 return (clear_dumper(td));
153 error = g_io_getattr("GEOM::kerneldump", cp, &len, &kd);
157 error = set_dumper(&kd.di, devtoname(dev), td, kda->kda_compression,
158 kda->kda_encryption, kda->kda_key, kda->kda_encryptedkeysize,
159 kda->kda_encryptedkey);
161 dev->si_flags |= SI_DUMPDEV;
167 init_dumpdev(struct cdev *dev)
169 struct diocskerneldump_arg kda;
170 struct g_consumer *cp;
171 const char *devprefix = "/dev/", *devname;
175 bzero(&kda, sizeof(kda));
181 len = strlen(devprefix);
182 devname = devtoname(dev);
183 if (strcmp(devname, dumpdev) != 0 &&
184 (strncmp(dumpdev, devprefix, len) != 0 ||
185 strcmp(devname, dumpdev + len) != 0))
188 cp = (struct g_consumer *)dev->si_drv2;
189 error = g_access(cp, 1, 0, 0);
193 error = g_dev_setdumpdev(dev, &kda, curthread);
199 (void)g_access(cp, -1, 0, 0);
205 g_dev_destroy(void *arg, int flags __unused)
207 struct g_consumer *cp;
209 struct g_dev_softc *sc;
210 char buf[SPECNAMELEN + 6];
216 g_trace(G_T_TOPOLOGY, "g_dev_destroy(%p(%s))", cp, gp->name);
217 snprintf(buf, sizeof(buf), "cdev=%s", gp->name);
218 devctl_notify_f("GEOM", "DEV", "DESTROY", buf, M_WAITOK);
219 if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
220 g_access(cp, -cp->acr, -cp->acw, -cp->ace);
222 g_destroy_consumer(cp);
224 mtx_destroy(&sc->sc_mtx);
234 LIST_FOREACH(gp, &g_dev_class.geom, geom) {
235 printf("%s%s", p, gp->name);
242 g_dev_set_physpath(struct g_consumer *cp)
244 struct g_dev_softc *sc;
246 int error, physpath_len;
248 if (g_access(cp, 1, 0, 0) != 0)
252 physpath_len = MAXPATHLEN;
253 physpath = g_malloc(physpath_len, M_WAITOK|M_ZERO);
254 error = g_io_getattr("GEOM::physpath", cp, &physpath_len, physpath);
255 g_access(cp, -1, 0, 0);
256 if (error == 0 && strlen(physpath) != 0) {
257 struct cdev *dev, *old_alias_dev;
258 struct cdev **alias_devp;
261 old_alias_dev = sc->sc_alias;
262 alias_devp = (struct cdev **)&sc->sc_alias;
263 make_dev_physpath_alias(MAKEDEV_WAITOK, alias_devp, dev,
264 old_alias_dev, physpath);
265 } else if (sc->sc_alias) {
266 destroy_dev((struct cdev *)sc->sc_alias);
273 g_dev_set_media(struct g_consumer *cp)
275 struct g_dev_softc *sc;
277 char buf[SPECNAMELEN + 6];
281 snprintf(buf, sizeof(buf), "cdev=%s", dev->si_name);
282 devctl_notify_f("DEVFS", "CDEV", "MEDIACHANGE", buf, M_WAITOK);
283 devctl_notify_f("GEOM", "DEV", "MEDIACHANGE", buf, M_WAITOK);
286 snprintf(buf, sizeof(buf), "cdev=%s", dev->si_name);
287 devctl_notify_f("DEVFS", "CDEV", "MEDIACHANGE", buf, M_WAITOK);
288 devctl_notify_f("GEOM", "DEV", "MEDIACHANGE", buf, M_WAITOK);
293 g_dev_attrchanged(struct g_consumer *cp, const char *attr)
296 if (strcmp(attr, "GEOM::media") == 0) {
301 if (strcmp(attr, "GEOM::physpath") == 0) {
302 g_dev_set_physpath(cp);
308 g_dev_resize(struct g_consumer *cp)
310 char buf[SPECNAMELEN + 6];
312 snprintf(buf, sizeof(buf), "cdev=%s", cp->provider->name);
313 devctl_notify_f("GEOM", "DEV", "SIZECHANGE", buf, M_WAITOK);
317 g_dev_getprovider(struct cdev *dev)
319 struct g_consumer *cp;
324 if (dev->si_devsw != &g_dev_cdevsw)
327 return (cp->provider);
330 static struct g_geom *
331 g_dev_taste(struct g_class *mp, struct g_provider *pp, int insist __unused)
334 struct g_geom_alias *gap;
335 struct g_consumer *cp;
336 struct g_dev_softc *sc;
338 struct cdev *dev, *adev;
339 char buf[SPECNAMELEN + 6];
341 g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name);
343 gp = g_new_geomf(mp, "%s", pp->name);
344 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO);
345 mtx_init(&sc->sc_mtx, "g_dev", NULL, MTX_DEF);
346 cp = g_new_consumer(gp);
348 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
349 error = g_attach(cp, pp);
351 ("g_dev_taste(%s) failed to g_attach, err=%d", pp->name, error));
352 error = make_dev_p(MAKEDEV_CHECKNAME | MAKEDEV_WAITOK, &dev,
353 &g_dev_cdevsw, NULL, UID_ROOT, GID_OPERATOR, 0640, "%s", gp->name);
355 printf("%s: make_dev_p() failed (gp->name=%s, error=%d)\n",
356 __func__, gp->name, error);
358 g_destroy_consumer(cp);
360 mtx_destroy(&sc->sc_mtx);
364 dev->si_flags |= SI_UNMAPPED;
367 dev->si_iosize_max = MAXPHYS;
369 error = init_dumpdev(dev);
371 printf("%s: init_dumpdev() failed (gp->name=%s, error=%d)\n",
372 __func__, gp->name, error);
374 g_dev_attrchanged(cp, "GEOM::physpath");
375 snprintf(buf, sizeof(buf), "cdev=%s", gp->name);
376 devctl_notify_f("GEOM", "DEV", "CREATE", buf, M_WAITOK);
378 * Now add all the aliases for this drive
380 LIST_FOREACH(gap, &pp->geom->aliases, ga_next) {
381 error = make_dev_alias_p(MAKEDEV_CHECKNAME | MAKEDEV_WAITOK, &adev, dev,
382 "%s", gap->ga_alias);
384 printf("%s: make_dev_alias_p() failed (name=%s, error=%d)\n",
385 __func__, gap->ga_alias, error);
388 snprintf(buf, sizeof(buf), "cdev=%s", gap->ga_alias);
389 devctl_notify_f("GEOM", "DEV", "CREATE", buf, M_WAITOK);
396 g_dev_open(struct cdev *dev, int flags, int fmt, struct thread *td)
398 struct g_consumer *cp;
399 struct g_dev_softc *sc;
404 return (ENXIO); /* g_dev_taste() not done yet */
405 g_trace(G_T_ACCESS, "g_dev_open(%s, %d, %d, %p)",
406 cp->geom->name, flags, fmt, td);
408 r = flags & FREAD ? 1 : 0;
409 w = flags & FWRITE ? 1 : 0;
411 e = flags & O_EXCL ? 1 : 0;
417 * This happens on attempt to open a device node with O_EXEC.
424 * When running in very secure mode, do not allow
425 * opens for writing of any disks.
427 error = securelevel_ge(td->td_ucred, 2);
432 error = g_access(cp, r, w, e);
436 mtx_lock(&sc->sc_mtx);
437 if (sc->sc_open == 0 && (sc->sc_active & SC_A_ACTIVE) != 0)
438 wakeup(&sc->sc_active);
439 sc->sc_open += r + w + e;
440 if (sc->sc_open == 0)
441 atomic_clear_int(&sc->sc_active, SC_A_OPEN);
443 atomic_set_int(&sc->sc_active, SC_A_OPEN);
444 mtx_unlock(&sc->sc_mtx);
450 g_dev_close(struct cdev *dev, int flags, int fmt, struct thread *td)
452 struct g_consumer *cp;
453 struct g_dev_softc *sc;
459 g_trace(G_T_ACCESS, "g_dev_close(%s, %d, %d, %p)",
460 cp->geom->name, flags, fmt, td);
462 r = flags & FREAD ? -1 : 0;
463 w = flags & FWRITE ? -1 : 0;
465 e = flags & O_EXCL ? -1 : 0;
471 * The vgonel(9) - caused by eg. forced unmount of devfs - calls
472 * VOP_CLOSE(9) on devfs vnode without any FREAD or FWRITE flags,
473 * which would result in zero deltas, which in turn would cause
474 * panic in g_access(9).
476 * Note that we cannot zero the counters (ie. do "r = cp->acr"
477 * etc) instead, because the consumer might be opened in another
484 mtx_lock(&sc->sc_mtx);
485 sc->sc_open += r + w + e;
486 if (sc->sc_open == 0)
487 atomic_clear_int(&sc->sc_active, SC_A_OPEN);
489 atomic_set_int(&sc->sc_active, SC_A_OPEN);
490 while (sc->sc_open == 0 && (sc->sc_active & SC_A_ACTIVE) != 0)
491 msleep(&sc->sc_active, &sc->sc_mtx, 0, "g_dev_close", hz / 10);
492 mtx_unlock(&sc->sc_mtx);
494 error = g_access(cp, r, w, e);
500 * XXX: Until we have unmessed the ioctl situation, there is a race against
501 * XXX: a concurrent orphanization. We cannot close it by holding topology
502 * XXX: since that would prevent us from doing our job, and stalling events
503 * XXX: will break (actually: stall) the BSD disklabel hacks.
506 g_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
508 struct g_consumer *cp;
509 struct g_provider *pp;
510 off_t offset, length, chunk, odd;
517 KASSERT(cp->acr || cp->acw,
518 ("Consumer with zero access count in g_dev_ioctl"));
520 i = IOCPARM_LEN(cmd);
522 case DIOCGSECTORSIZE:
523 *(u_int *)data = cp->provider->sectorsize;
524 if (*(u_int *)data == 0)
528 *(off_t *)data = cp->provider->mediasize;
529 if (*(off_t *)data == 0)
533 error = g_io_getattr("GEOM::fwsectors", cp, &i, data);
534 if (error == 0 && *(u_int *)data == 0)
538 error = g_io_getattr("GEOM::fwheads", cp, &i, data);
539 if (error == 0 && *(u_int *)data == 0)
542 case DIOCGFRONTSTUFF:
543 error = g_io_getattr("GEOM::frontstuff", cp, &i, data);
545 #ifdef COMPAT_FREEBSD11
546 case DIOCSKERNELDUMP_FREEBSD11:
548 struct diocskerneldump_arg kda;
550 bzero(&kda, sizeof(kda));
551 kda.kda_encryption = KERNELDUMP_ENC_NONE;
552 kda.kda_enable = (uint8_t)*(u_int *)data;
553 if (kda.kda_enable == 0)
554 error = g_dev_setdumpdev(NULL, NULL, td);
556 error = g_dev_setdumpdev(dev, &kda, td);
560 case DIOCSKERNELDUMP:
562 struct diocskerneldump_arg *kda;
563 uint8_t *encryptedkey;
565 kda = (struct diocskerneldump_arg *)data;
566 if (kda->kda_enable == 0) {
567 error = g_dev_setdumpdev(NULL, NULL, td);
571 if (kda->kda_encryption != KERNELDUMP_ENC_NONE) {
572 if (kda->kda_encryptedkeysize <= 0 ||
573 kda->kda_encryptedkeysize >
574 KERNELDUMP_ENCKEY_MAX_SIZE) {
577 encryptedkey = malloc(kda->kda_encryptedkeysize, M_TEMP,
579 error = copyin(kda->kda_encryptedkey, encryptedkey,
580 kda->kda_encryptedkeysize);
585 kda->kda_encryptedkey = encryptedkey;
586 error = g_dev_setdumpdev(dev, kda, td);
588 if (encryptedkey != NULL) {
589 explicit_bzero(encryptedkey, kda->kda_encryptedkeysize);
590 free(encryptedkey, M_TEMP);
592 explicit_bzero(kda, sizeof(*kda));
596 error = g_io_flush(cp);
599 offset = ((off_t *)data)[0];
600 length = ((off_t *)data)[1];
601 if ((offset % cp->provider->sectorsize) != 0 ||
602 (length % cp->provider->sectorsize) != 0 || length <= 0) {
603 printf("%s: offset=%jd length=%jd\n", __func__, offset,
608 if ((cp->provider->mediasize > 0) &&
609 (offset >= cp->provider->mediasize)) {
611 * Catch out-of-bounds requests here. The problem is
612 * that due to historical GEOM I/O implementation
613 * peculatities, g_delete_data() would always return
614 * success for requests starting just the next byte
615 * after providers media boundary. Condition check on
616 * non-zero media size, since that condition would
617 * (most likely) cause ENXIO instead.
624 if (g_dev_del_max_sectors != 0 && chunk >
625 g_dev_del_max_sectors * cp->provider->sectorsize) {
626 chunk = g_dev_del_max_sectors *
627 cp->provider->sectorsize;
628 if (cp->provider->stripesize > 0) {
629 odd = (offset + chunk +
630 cp->provider->stripeoffset) %
631 cp->provider->stripesize;
636 error = g_delete_data(cp, offset, chunk);
642 * Since the request size can be large, the service
643 * time can be is likewise. We make this ioctl
644 * interruptible by checking for signals for each bio.
651 error = g_io_getattr("GEOM::ident", cp, &i, data);
653 case DIOCGPROVIDERNAME:
656 strlcpy(data, pp->name, i);
658 case DIOCGSTRIPESIZE:
659 *(off_t *)data = cp->provider->stripesize;
661 case DIOCGSTRIPEOFFSET:
662 *(off_t *)data = cp->provider->stripeoffset;
665 error = g_io_getattr("GEOM::physpath", cp, &i, data);
666 if (error == 0 && *(char *)data == '\0')
670 struct diocgattr_arg *arg = (struct diocgattr_arg *)data;
672 if (arg->len > sizeof(arg->value)) {
676 error = g_io_getattr(arg->name, cp, &arg->len, &arg->value);
680 struct disk_zone_args *zone_args =(struct disk_zone_args *)data;
681 struct disk_zone_rep_entry *new_entries, *old_entries;
682 struct disk_zone_report *rep;
690 if (zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES) {
691 rep = &zone_args->zone_params.report;
692 #define MAXENTRIES (MAXPHYS / sizeof(struct disk_zone_rep_entry))
693 if (rep->entries_allocated > MAXENTRIES)
694 rep->entries_allocated = MAXENTRIES;
695 alloc_size = rep->entries_allocated *
696 sizeof(struct disk_zone_rep_entry);
698 new_entries = g_malloc(alloc_size,
700 old_entries = rep->entries;
701 rep->entries = new_entries;
703 error = g_io_zonecmd(zone_args, cp);
704 if (zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES &&
705 alloc_size != 0 && error == 0)
706 error = copyout(new_entries, old_entries, alloc_size);
707 if (old_entries != NULL && rep != NULL)
708 rep->entries = old_entries;
709 if (new_entries != NULL)
714 if (cp->provider->geom->ioctl != NULL) {
715 error = cp->provider->geom->ioctl(cp->provider, cmd, data, fflag, td);
725 g_dev_done(struct bio *bp2)
727 struct g_consumer *cp;
728 struct g_dev_softc *sc;
734 bp = bp2->bio_parent;
735 bp->bio_error = bp2->bio_error;
736 bp->bio_completed = bp2->bio_completed;
737 bp->bio_resid = bp->bio_length - bp2->bio_completed;
738 if (bp2->bio_cmd == BIO_ZONE)
739 bcopy(&bp2->bio_zone, &bp->bio_zone, sizeof(bp->bio_zone));
741 if (bp2->bio_error != 0) {
742 g_trace(G_T_BIO, "g_dev_done(%p) had error %d",
743 bp2, bp2->bio_error);
744 bp->bio_flags |= BIO_ERROR;
746 g_trace(G_T_BIO, "g_dev_done(%p/%p) resid %ld completed %jd",
747 bp2, bp, bp2->bio_resid, (intmax_t)bp2->bio_completed);
750 active = atomic_fetchadd_int(&sc->sc_active, -1) - 1;
751 if ((active & SC_A_ACTIVE) == 0) {
752 if ((active & SC_A_OPEN) == 0)
753 wakeup(&sc->sc_active);
754 if (active & SC_A_DESTROY)
755 g_post_event(g_dev_destroy, cp, M_NOWAIT, NULL);
761 g_dev_strategy(struct bio *bp)
763 struct g_consumer *cp;
766 struct g_dev_softc *sc;
768 KASSERT(bp->bio_cmd == BIO_READ ||
769 bp->bio_cmd == BIO_WRITE ||
770 bp->bio_cmd == BIO_DELETE ||
771 bp->bio_cmd == BIO_FLUSH ||
772 bp->bio_cmd == BIO_ZONE,
773 ("Wrong bio_cmd bio=%p cmd=%d", bp, bp->bio_cmd));
777 KASSERT(cp->acr || cp->acw,
778 ("Consumer with zero access count in g_dev_strategy"));
779 biotrack(bp, __func__);
781 if ((bp->bio_offset % cp->provider->sectorsize) != 0 ||
782 (bp->bio_bcount % cp->provider->sectorsize) != 0) {
783 bp->bio_resid = bp->bio_bcount;
784 biofinish(bp, NULL, EINVAL);
788 KASSERT(sc->sc_open > 0, ("Closed device in g_dev_strategy"));
789 atomic_add_int(&sc->sc_active, 1);
793 * XXX: This is not an ideal solution, but I believe it to
794 * XXX: deadlock safely, all things considered.
796 bp2 = g_clone_bio(bp);
799 pause("gdstrat", hz / 10);
801 KASSERT(bp2 != NULL, ("XXX: ENOMEM in a bad place"));
802 bp2->bio_done = g_dev_done;
804 "g_dev_strategy(%p/%p) offset %jd length %jd data %p cmd %d",
805 bp, bp2, (intmax_t)bp->bio_offset, (intmax_t)bp2->bio_length,
806 bp2->bio_data, bp2->bio_cmd);
807 g_io_request(bp2, cp);
808 KASSERT(cp->acr || cp->acw,
809 ("g_dev_strategy raced with g_dev_close and lost"));
816 * Called by devfs when asynchronous device destruction is completed.
817 * - Mark that we have no attached device any more.
818 * - If there are no outstanding requests, schedule geom destruction.
819 * Otherwise destruction will be scheduled later by g_dev_done().
823 g_dev_callback(void *arg)
825 struct g_consumer *cp;
826 struct g_dev_softc *sc;
831 g_trace(G_T_TOPOLOGY, "g_dev_callback(%p(%s))", cp, cp->geom->name);
835 active = atomic_fetchadd_int(&sc->sc_active, SC_A_DESTROY);
836 if ((active & SC_A_ACTIVE) == 0)
837 g_post_event(g_dev_destroy, cp, M_WAITOK, NULL);
843 * Called from below when the provider orphaned us.
844 * - Clear any dump settings.
845 * - Request asynchronous device destruction to prevent any more requests
846 * from coming in. The provider is already marked with an error, so
847 * anything which comes in the interim will be returned immediately.
851 g_dev_orphan(struct g_consumer *cp)
854 struct g_dev_softc *sc;
859 g_trace(G_T_TOPOLOGY, "g_dev_orphan(%p(%s))", cp, cp->geom->name);
861 /* Reset any dump-area set on this device */
862 if (dev->si_flags & SI_DUMPDEV)
863 (void)clear_dumper(curthread);
865 /* Destroy the struct cdev *so we get no more requests */
867 destroy_dev_sched_cb(dev, g_dev_callback, cp);
870 DECLARE_GEOM_CLASS(g_dev_class, g_dev);