2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
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.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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
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
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/sysctl.h>
47 #include <sys/ctype.h>
48 #include <sys/fcntl.h>
49 #include <sys/malloc.h>
51 #include <sys/devicestat.h>
52 #include <machine/md_var.h>
55 #include <sys/mutex.h>
56 #include <geom/geom.h>
57 #include <geom/geom_disk.h>
58 #include <geom/geom_int.h>
60 #include <dev/led/led.h>
62 #include <machine/bus.h>
67 struct sysctl_ctx_list sysctl_ctx;
68 struct sysctl_oid *sysctl_tree;
74 static g_access_t g_disk_access;
75 static g_start_t g_disk_start;
76 static g_ioctl_t g_disk_ioctl;
77 static g_dumpconf_t g_disk_dumpconf;
78 static g_provgone_t g_disk_providergone;
80 static struct g_class g_disk_class = {
81 .name = G_DISK_CLASS_NAME,
83 .start = g_disk_start,
84 .access = g_disk_access,
85 .ioctl = g_disk_ioctl,
86 .providergone = g_disk_providergone,
87 .dumpconf = g_disk_dumpconf,
90 SYSCTL_DECL(_kern_geom);
91 static SYSCTL_NODE(_kern_geom, OID_AUTO, disk, CTLFLAG_RW, 0,
94 DECLARE_GEOM_CLASS(g_disk_class, g_disk);
97 g_disk_lock_giant(struct disk *dp)
100 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
105 g_disk_unlock_giant(struct disk *dp)
108 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
113 g_disk_access(struct g_provider *pp, int r, int w, int e)
116 struct g_disk_softc *sc;
119 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
123 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
125 * Allow decreasing access count even if disk is not
128 if (r <= 0 && w <= 0 && e <= 0)
136 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
137 if (dp->d_open != NULL) {
138 g_disk_lock_giant(dp);
139 error = dp->d_open(dp);
140 if (bootverbose && error != 0)
141 printf("Opened disk %s -> %d\n",
143 g_disk_unlock_giant(dp);
147 pp->mediasize = dp->d_mediasize;
148 pp->sectorsize = dp->d_sectorsize;
149 if (dp->d_maxsize == 0) {
150 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
151 dp->d_name, dp->d_unit);
152 dp->d_maxsize = DFLTPHYS;
154 if (dp->d_delmaxsize == 0) {
155 if (bootverbose && dp->d_flags & DISKFLAG_CANDELETE) {
156 printf("WARNING: Disk drive %s%d has no "
157 "d_delmaxsize\n", dp->d_name, dp->d_unit);
159 dp->d_delmaxsize = dp->d_maxsize;
161 pp->stripeoffset = dp->d_stripeoffset;
162 pp->stripesize = dp->d_stripesize;
163 dp->d_flags |= DISKFLAG_OPEN;
164 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
165 if (dp->d_close != NULL) {
166 g_disk_lock_giant(dp);
167 error = dp->d_close(dp);
169 printf("Closed disk %s -> %d\n",
171 g_disk_unlock_giant(dp);
173 sc->state = G_STATE_ACTIVE;
175 led_set(sc->led, "0");
176 dp->d_flags &= ~DISKFLAG_OPEN;
182 g_disk_kerneldump(struct bio *bp, struct disk *dp)
184 struct g_kerneldump *gkd;
187 gkd = (struct g_kerneldump*)bp->bio_data;
188 gp = bp->bio_to->geom;
189 g_trace(G_T_TOPOLOGY, "g_disk_kerneldump(%s, %jd, %jd)",
190 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
191 if (dp->d_dump == NULL) {
192 g_io_deliver(bp, ENODEV);
195 gkd->di.dumper = dp->d_dump;
197 gkd->di.blocksize = dp->d_sectorsize;
198 gkd->di.maxiosize = dp->d_maxsize;
199 gkd->di.mediaoffset = gkd->offset;
200 if ((gkd->offset + gkd->length) > dp->d_mediasize)
201 gkd->length = dp->d_mediasize - gkd->offset;
202 gkd->di.mediasize = gkd->length;
207 g_disk_setstate(struct bio *bp, struct g_disk_softc *sc)
211 memcpy(&sc->state, bp->bio_data, sizeof(sc->state));
212 if (sc->led[0] != 0) {
217 case G_STATE_REBUILD:
227 led_set(sc->led, cmd);
233 g_disk_done(struct bio *bp)
237 struct g_disk_softc *sc;
239 /* See "notes" for why we need a mutex here */
240 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
241 bp2 = bp->bio_parent;
242 sc = bp2->bio_to->private;
243 bp->bio_completed = bp->bio_length - bp->bio_resid;
245 mtx_lock(&sc->done_mtx);
246 if (bp2->bio_error == 0)
247 bp2->bio_error = bp->bio_error;
248 bp2->bio_completed += bp->bio_completed;
249 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE|BIO_FLUSH)) != 0)
250 devstat_end_transaction_bio_bt(sc->dp->d_devstat, bp, &now);
252 if (bp2->bio_children == bp2->bio_inbed) {
253 mtx_unlock(&sc->done_mtx);
254 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
255 g_io_deliver(bp2, bp2->bio_error);
257 mtx_unlock(&sc->done_mtx);
262 g_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td)
265 struct g_disk_softc *sc;
271 if (dp->d_ioctl == NULL)
273 g_disk_lock_giant(dp);
274 error = dp->d_ioctl(dp, cmd, data, fflag, td);
275 g_disk_unlock_giant(dp);
280 g_disk_maxsize(struct disk *dp, struct bio *bp)
282 if (bp->bio_cmd == BIO_DELETE)
283 return (dp->d_delmaxsize);
284 return (dp->d_maxsize);
288 g_disk_maxsegs(struct disk *dp, struct bio *bp)
290 return ((g_disk_maxsize(dp, bp) / PAGE_SIZE) + 1);
294 g_disk_advance(struct disk *dp, struct bio *bp, off_t off)
297 bp->bio_offset += off;
298 bp->bio_length -= off;
300 if ((bp->bio_flags & BIO_VLIST) != 0) {
301 bus_dma_segment_t *seg, *end;
303 seg = (bus_dma_segment_t *)bp->bio_data;
304 end = (bus_dma_segment_t *)bp->bio_data + bp->bio_ma_n;
305 off += bp->bio_ma_offset;
306 while (off >= seg->ds_len) {
307 KASSERT((seg != end),
308 ("vlist request runs off the end"));
312 bp->bio_ma_offset = off;
313 bp->bio_ma_n = end - seg;
314 bp->bio_data = (void *)seg;
315 } else if ((bp->bio_flags & BIO_UNMAPPED) != 0) {
316 bp->bio_ma += off / PAGE_SIZE;
317 bp->bio_ma_offset += off;
318 bp->bio_ma_offset %= PAGE_SIZE;
319 bp->bio_ma_n -= off / PAGE_SIZE;
326 g_disk_seg_limit(bus_dma_segment_t *seg, off_t *poffset,
327 off_t *plength, int *ppages)
329 uintptr_t seg_page_base;
330 uintptr_t seg_page_end;
338 if (length > seg->ds_len - offset)
339 length = seg->ds_len - offset;
341 seg_page_base = trunc_page(seg->ds_addr + offset);
342 seg_page_end = round_page(seg->ds_addr + offset + length);
343 seg_pages = (seg_page_end - seg_page_base) >> PAGE_SHIFT;
345 if (seg_pages > *ppages) {
347 length = (seg_page_base + (seg_pages << PAGE_SHIFT)) -
348 (seg->ds_addr + offset);
353 *ppages -= seg_pages;
357 g_disk_vlist_limit(struct disk *dp, struct bio *bp, bus_dma_segment_t **pendseg)
359 bus_dma_segment_t *seg, *end;
364 seg = (bus_dma_segment_t *)bp->bio_data;
365 end = (bus_dma_segment_t *)bp->bio_data + bp->bio_ma_n;
366 residual = bp->bio_length;
367 offset = bp->bio_ma_offset;
368 pages = g_disk_maxsegs(dp, bp);
369 while (residual != 0 && pages != 0) {
370 KASSERT((seg != end),
371 ("vlist limit runs off the end"));
372 g_disk_seg_limit(seg, &offset, &residual, &pages);
381 g_disk_limit(struct disk *dp, struct bio *bp)
383 bool limited = false;
386 maxsz = g_disk_maxsize(dp, bp);
389 * XXX: If we have a stripesize we should really use it here.
390 * Care should be taken in the delete case if this is done
391 * as deletes can be very sensitive to size given how they
394 if (bp->bio_length > maxsz) {
395 bp->bio_length = maxsz;
399 if ((bp->bio_flags & BIO_VLIST) != 0) {
400 bus_dma_segment_t *firstseg, *endseg;
403 firstseg = (bus_dma_segment_t*)bp->bio_data;
404 residual = g_disk_vlist_limit(dp, bp, &endseg);
406 bp->bio_ma_n = endseg - firstseg;
407 bp->bio_length -= residual;
410 } else if ((bp->bio_flags & BIO_UNMAPPED) != 0) {
412 howmany(bp->bio_ma_offset + bp->bio_length, PAGE_SIZE);
419 g_disk_start(struct bio *bp)
421 struct bio *bp2, *bp3;
423 struct g_disk_softc *sc;
427 sc = bp->bio_to->private;
428 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
429 g_io_deliver(bp, ENXIO);
433 switch(bp->bio_cmd) {
435 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
442 KASSERT((dp->d_flags & DISKFLAG_UNMAPPED_BIO) != 0 ||
443 (bp->bio_flags & BIO_UNMAPPED) == 0,
444 ("unmapped bio not supported by disk %s", dp->d_name));
447 bp2 = g_clone_bio(bp);
453 if (g_disk_limit(dp, bp2)) {
454 off += bp2->bio_length;
457 * To avoid a race, we need to grab the next bio
458 * before we schedule this one. See "notes".
460 bp3 = g_clone_bio(bp);
462 bp->bio_error = ENOMEM;
464 bp2->bio_done = g_disk_done;
465 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
466 bp2->bio_bcount = bp2->bio_length;
468 mtx_lock(&sc->start_mtx);
469 devstat_start_transaction_bio(dp->d_devstat, bp2);
470 mtx_unlock(&sc->start_mtx);
471 g_disk_lock_giant(dp);
473 g_disk_unlock_giant(dp);
480 g_disk_advance(dp, bp2, off);
484 /* Give the driver a chance to override */
485 if (dp->d_getattr != NULL) {
486 if (bp->bio_disk == NULL)
488 error = dp->d_getattr(bp);
493 if (g_handleattr_int(bp, "GEOM::candelete",
494 (dp->d_flags & DISKFLAG_CANDELETE) != 0))
496 else if (g_handleattr_int(bp, "GEOM::fwsectors",
499 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
501 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
503 else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident))
505 else if (g_handleattr_uint16_t(bp, "GEOM::hba_vendor",
508 else if (g_handleattr_uint16_t(bp, "GEOM::hba_device",
511 else if (g_handleattr_uint16_t(bp, "GEOM::hba_subvendor",
512 dp->d_hba_subvendor))
514 else if (g_handleattr_uint16_t(bp, "GEOM::hba_subdevice",
515 dp->d_hba_subdevice))
517 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
518 g_disk_kerneldump(bp, dp);
519 else if (!strcmp(bp->bio_attribute, "GEOM::setstate"))
520 g_disk_setstate(bp, sc);
521 else if (!strcmp(bp->bio_attribute, "GEOM::rotation_rate")) {
524 if ((dp->d_flags & DISKFLAG_LACKS_ROTRATE) == 0)
525 v = dp->d_rotation_rate;
527 v = 0; /* rate unknown */
528 g_handleattr_uint16_t(bp, "GEOM::rotation_rate", v);
534 g_trace(G_T_BIO, "g_disk_flushcache(%s)",
536 if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) {
540 bp2 = g_clone_bio(bp);
542 g_io_deliver(bp, ENOMEM);
545 bp2->bio_done = g_disk_done;
547 mtx_lock(&sc->start_mtx);
548 devstat_start_transaction_bio(dp->d_devstat, bp2);
549 mtx_unlock(&sc->start_mtx);
550 g_disk_lock_giant(dp);
552 g_disk_unlock_giant(dp);
558 if (error != EJUSTRETURN)
559 g_io_deliver(bp, error);
564 g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
568 struct g_disk_softc *sc;
573 if (sc == NULL || (dp = sc->dp) == NULL)
575 if (indent == NULL) {
576 sbuf_printf(sb, " hd %u", dp->d_fwheads);
577 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
581 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
582 indent, dp->d_fwheads);
583 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
584 indent, dp->d_fwsectors);
587 * "rotationrate" is a little complicated, because the value
588 * returned by the drive might not be the RPM; 0 and 1 are
589 * special cases, and there's also a valid range.
591 sbuf_printf(sb, "%s<rotationrate>", indent);
592 if (dp->d_rotation_rate == DISK_RR_UNKNOWN) /* Old drives */
593 sbuf_printf(sb, "unknown"); /* don't report RPM. */
594 else if (dp->d_rotation_rate == DISK_RR_NON_ROTATING)
595 sbuf_printf(sb, "0");
596 else if ((dp->d_rotation_rate >= DISK_RR_MIN) &&
597 (dp->d_rotation_rate <= DISK_RR_MAX))
598 sbuf_printf(sb, "%u", dp->d_rotation_rate);
600 sbuf_printf(sb, "invalid");
601 sbuf_printf(sb, "</rotationrate>\n");
602 if (dp->d_getattr != NULL) {
603 buf = g_malloc(DISK_IDENT_SIZE, M_WAITOK);
606 bp->bio_attribute = "GEOM::ident";
607 bp->bio_length = DISK_IDENT_SIZE;
609 res = dp->d_getattr(bp);
610 sbuf_printf(sb, "%s<ident>", indent);
611 g_conf_printf_escaped(sb, "%s",
612 res == 0 ? buf: dp->d_ident);
613 sbuf_printf(sb, "</ident>\n");
614 bp->bio_attribute = "GEOM::lunid";
615 bp->bio_length = DISK_IDENT_SIZE;
617 if (dp->d_getattr(bp) == 0) {
618 sbuf_printf(sb, "%s<lunid>", indent);
619 g_conf_printf_escaped(sb, "%s", buf);
620 sbuf_printf(sb, "</lunid>\n");
622 bp->bio_attribute = "GEOM::lunname";
623 bp->bio_length = DISK_IDENT_SIZE;
625 if (dp->d_getattr(bp) == 0) {
626 sbuf_printf(sb, "%s<lunname>", indent);
627 g_conf_printf_escaped(sb, "%s", buf);
628 sbuf_printf(sb, "</lunname>\n");
633 sbuf_printf(sb, "%s<ident>", indent);
634 g_conf_printf_escaped(sb, "%s", dp->d_ident);
635 sbuf_printf(sb, "</ident>\n");
637 sbuf_printf(sb, "%s<descr>", indent);
638 g_conf_printf_escaped(sb, "%s", dp->d_descr);
639 sbuf_printf(sb, "</descr>\n");
644 g_disk_resize(void *ptr, int flag)
648 struct g_provider *pp;
650 if (flag == EV_CANCEL)
657 if (dp->d_destroyed || gp == NULL)
660 LIST_FOREACH(pp, &gp->provider, provider) {
661 if (pp->sectorsize != 0 &&
662 pp->sectorsize != dp->d_sectorsize)
663 g_wither_provider(pp, ENXIO);
665 g_resize_provider(pp, dp->d_mediasize);
670 g_disk_create(void *arg, int flag)
673 struct g_provider *pp;
675 struct g_disk_softc *sc;
678 if (flag == EV_CANCEL)
682 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO);
683 mtx_init(&sc->start_mtx, "g_disk_start", NULL, MTX_DEF);
684 mtx_init(&sc->done_mtx, "g_disk_done", NULL, MTX_DEF);
686 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
688 pp = g_new_providerf(gp, "%s", gp->name);
689 devstat_remove_entry(pp->stat);
691 dp->d_devstat->id = pp;
692 pp->mediasize = dp->d_mediasize;
693 pp->sectorsize = dp->d_sectorsize;
694 pp->stripeoffset = dp->d_stripeoffset;
695 pp->stripesize = dp->d_stripesize;
696 if ((dp->d_flags & DISKFLAG_UNMAPPED_BIO) != 0)
697 pp->flags |= G_PF_ACCEPT_UNMAPPED;
698 if ((dp->d_flags & DISKFLAG_DIRECT_COMPLETION) != 0)
699 pp->flags |= G_PF_DIRECT_SEND;
700 pp->flags |= G_PF_DIRECT_RECEIVE;
702 printf("GEOM: new disk %s\n", gp->name);
703 sysctl_ctx_init(&sc->sysctl_ctx);
704 snprintf(tmpstr, sizeof(tmpstr), "GEOM disk %s", gp->name);
705 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
706 SYSCTL_STATIC_CHILDREN(_kern_geom_disk), OID_AUTO, gp->name,
707 CTLFLAG_RD, 0, tmpstr);
708 if (sc->sysctl_tree != NULL) {
709 snprintf(tmpstr, sizeof(tmpstr),
710 "kern.geom.disk.%s.led", gp->name);
711 TUNABLE_STR_FETCH(tmpstr, sc->led, sizeof(sc->led));
712 SYSCTL_ADD_STRING(&sc->sysctl_ctx,
713 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "led",
714 CTLFLAG_RW | CTLFLAG_TUN, sc->led, sizeof(sc->led),
719 g_error_provider(pp, 0);
723 * We get this callback after all of the consumers have gone away, and just
724 * before the provider is freed. If the disk driver provided a d_gone
725 * callback, let them know that it is okay to free resources -- they won't
726 * be getting any more accesses from GEOM.
729 g_disk_providergone(struct g_provider *pp)
732 struct g_disk_softc *sc;
734 sc = (struct g_disk_softc *)pp->private;
736 if (dp != NULL && dp->d_gone != NULL)
738 if (sc->sysctl_tree != NULL) {
739 sysctl_ctx_free(&sc->sysctl_ctx);
740 sc->sysctl_tree = NULL;
742 if (sc->led[0] != 0) {
743 led_set(sc->led, "0");
747 pp->geom->softc = NULL;
748 mtx_destroy(&sc->done_mtx);
749 mtx_destroy(&sc->start_mtx);
754 g_disk_destroy(void *ptr, int flag)
758 struct g_disk_softc *sc;
768 g_wither_geom(gp, ENXIO);
774 * We only allow printable characters in disk ident,
775 * the rest is converted to 'x<HH>'.
778 g_disk_ident_adjust(char *ident, size_t size)
780 char *p, tmp[4], newid[DISK_IDENT_SIZE];
783 for (p = ident; *p != '\0'; p++) {
788 snprintf(tmp, sizeof(tmp), "x%02hhx",
789 *(unsigned char *)p);
791 if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid))
795 strlcpy(ident, newid, size);
802 return (g_malloc(sizeof(struct disk), M_WAITOK | M_ZERO));
806 disk_create(struct disk *dp, int version)
809 if (version != DISK_VERSION) {
810 printf("WARNING: Attempt to add disk %s%d %s",
811 dp->d_name, dp->d_unit,
812 " using incompatible ABI version of disk(9)\n");
813 printf("WARNING: Ignoring disk %s%d\n",
814 dp->d_name, dp->d_unit);
817 if (version < DISK_VERSION_04)
818 dp->d_flags |= DISKFLAG_LACKS_ROTRATE;
819 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
820 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
821 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
822 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
823 if (dp->d_devstat == NULL)
824 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
825 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
826 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
828 g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident));
829 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
833 disk_destroy(struct disk *dp)
838 if (dp->d_devstat != NULL)
839 devstat_remove_entry(dp->d_devstat);
840 g_post_event(g_disk_destroy, dp, M_WAITOK, NULL);
844 disk_gone(struct disk *dp)
847 struct g_provider *pp;
851 pp = LIST_FIRST(&gp->provider);
853 KASSERT(LIST_NEXT(pp, provider) == NULL,
854 ("geom %p has more than one provider", gp));
855 g_wither_provider(pp, ENXIO);
861 disk_attr_changed(struct disk *dp, const char *attr, int flag)
864 struct g_provider *pp;
865 char devnamebuf[128];
869 LIST_FOREACH(pp, &gp->provider, provider)
870 (void)g_attr_changed(pp, attr, flag);
871 snprintf(devnamebuf, sizeof(devnamebuf), "devname=%s%d", dp->d_name,
873 devctl_notify("GEOM", "disk", attr, devnamebuf);
877 disk_media_changed(struct disk *dp, int flag)
880 struct g_provider *pp;
884 pp = LIST_FIRST(&gp->provider);
886 KASSERT(LIST_NEXT(pp, provider) == NULL,
887 ("geom %p has more than one provider", gp));
888 g_media_changed(pp, flag);
894 disk_media_gone(struct disk *dp, int flag)
897 struct g_provider *pp;
901 pp = LIST_FIRST(&gp->provider);
903 KASSERT(LIST_NEXT(pp, provider) == NULL,
904 ("geom %p has more than one provider", gp));
905 g_media_gone(pp, flag);
911 disk_resize(struct disk *dp, int flag)
914 if (dp->d_destroyed || dp->d_geom == NULL)
917 return (g_post_event(g_disk_resize, dp, flag, NULL));
921 g_kern_disks(void *p, int flag __unused)
930 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
931 sbuf_printf(sb, "%s%s", sp, gp->name);
938 sysctl_disks(SYSCTL_HANDLER_ARGS)
943 sb = sbuf_new_auto();
944 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
945 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
950 SYSCTL_PROC(_kern, OID_AUTO, disks,
951 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
952 sysctl_disks, "A", "names of available disks");