xref: /freebsd/sys/geom/concat/g_concat.c (revision 8b64f3ca6c222808ef42281a2c49ae9eac59ac06)
119d16e2fSPawel Jakub Dawidek /*-
2e6890985SPawel Jakub Dawidek  * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
319d16e2fSPawel Jakub Dawidek  * All rights reserved.
419d16e2fSPawel Jakub Dawidek  *
519d16e2fSPawel Jakub Dawidek  * Redistribution and use in source and binary forms, with or without
619d16e2fSPawel Jakub Dawidek  * modification, are permitted provided that the following conditions
719d16e2fSPawel Jakub Dawidek  * are met:
819d16e2fSPawel Jakub Dawidek  * 1. Redistributions of source code must retain the above copyright
919d16e2fSPawel Jakub Dawidek  *    notice, this list of conditions and the following disclaimer.
1019d16e2fSPawel Jakub Dawidek  * 2. Redistributions in binary form must reproduce the above copyright
1119d16e2fSPawel Jakub Dawidek  *    notice, this list of conditions and the following disclaimer in the
1219d16e2fSPawel Jakub Dawidek  *    documentation and/or other materials provided with the distribution.
1319d16e2fSPawel Jakub Dawidek  *
1419d16e2fSPawel Jakub Dawidek  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
1519d16e2fSPawel Jakub Dawidek  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1619d16e2fSPawel Jakub Dawidek  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1719d16e2fSPawel Jakub Dawidek  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
1819d16e2fSPawel Jakub Dawidek  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1919d16e2fSPawel Jakub Dawidek  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2019d16e2fSPawel Jakub Dawidek  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2119d16e2fSPawel Jakub Dawidek  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2219d16e2fSPawel Jakub Dawidek  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2319d16e2fSPawel Jakub Dawidek  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2419d16e2fSPawel Jakub Dawidek  * SUCH DAMAGE.
2519d16e2fSPawel Jakub Dawidek  */
2619d16e2fSPawel Jakub Dawidek 
2719d16e2fSPawel Jakub Dawidek #include <sys/cdefs.h>
2819d16e2fSPawel Jakub Dawidek __FBSDID("$FreeBSD$");
2919d16e2fSPawel Jakub Dawidek 
3019d16e2fSPawel Jakub Dawidek #include <sys/param.h>
3119d16e2fSPawel Jakub Dawidek #include <sys/systm.h>
3219d16e2fSPawel Jakub Dawidek #include <sys/kernel.h>
3319d16e2fSPawel Jakub Dawidek #include <sys/module.h>
3419d16e2fSPawel Jakub Dawidek #include <sys/lock.h>
3519d16e2fSPawel Jakub Dawidek #include <sys/mutex.h>
3619d16e2fSPawel Jakub Dawidek #include <sys/bio.h>
375d807a0eSAndrey V. Elsukov #include <sys/sbuf.h>
3819d16e2fSPawel Jakub Dawidek #include <sys/sysctl.h>
3919d16e2fSPawel Jakub Dawidek #include <sys/malloc.h>
4019d16e2fSPawel Jakub Dawidek #include <geom/geom.h>
4119d16e2fSPawel Jakub Dawidek #include <geom/concat/g_concat.h>
4219d16e2fSPawel Jakub Dawidek 
43cb08c2ccSAlexander Leidinger FEATURE(geom_concat, "GEOM concatenation support");
4419d16e2fSPawel Jakub Dawidek 
455bb84bc8SRobert Watson static MALLOC_DEFINE(M_CONCAT, "concat_data", "GEOM_CONCAT Data");
4619d16e2fSPawel Jakub Dawidek 
47a88ae49fSPawel Jakub Dawidek SYSCTL_DECL(_kern_geom);
486472ac3dSEd Schouten static SYSCTL_NODE(_kern_geom, OID_AUTO, concat, CTLFLAG_RW, 0,
496472ac3dSEd Schouten     "GEOM_CONCAT stuff");
5019d16e2fSPawel Jakub Dawidek static u_int g_concat_debug = 0;
51af3b2549SHans Petter Selasky SYSCTL_UINT(_kern_geom_concat, OID_AUTO, debug, CTLFLAG_RWTUN, &g_concat_debug, 0,
5219d16e2fSPawel Jakub Dawidek     "Debug level");
5319d16e2fSPawel Jakub Dawidek 
5419d16e2fSPawel Jakub Dawidek static int g_concat_destroy(struct g_concat_softc *sc, boolean_t force);
5519d16e2fSPawel Jakub Dawidek static int g_concat_destroy_geom(struct gctl_req *req, struct g_class *mp,
5619d16e2fSPawel Jakub Dawidek     struct g_geom *gp);
5719d16e2fSPawel Jakub Dawidek 
5819d16e2fSPawel Jakub Dawidek static g_taste_t g_concat_taste;
5919d16e2fSPawel Jakub Dawidek static g_ctl_req_t g_concat_config;
6019d16e2fSPawel Jakub Dawidek static g_dumpconf_t g_concat_dumpconf;
6119d16e2fSPawel Jakub Dawidek 
6219d16e2fSPawel Jakub Dawidek struct g_class g_concat_class = {
6319d16e2fSPawel Jakub Dawidek 	.name = G_CONCAT_CLASS_NAME,
645721c9c7SPoul-Henning Kamp 	.version = G_VERSION,
6519d16e2fSPawel Jakub Dawidek 	.ctlreq = g_concat_config,
6619d16e2fSPawel Jakub Dawidek 	.taste = g_concat_taste,
6719d16e2fSPawel Jakub Dawidek 	.destroy_geom = g_concat_destroy_geom
6819d16e2fSPawel Jakub Dawidek };
6919d16e2fSPawel Jakub Dawidek 
7019d16e2fSPawel Jakub Dawidek 
7119d16e2fSPawel Jakub Dawidek /*
7248fbd94bSPawel Jakub Dawidek  * Greatest Common Divisor.
7348fbd94bSPawel Jakub Dawidek  */
7448fbd94bSPawel Jakub Dawidek static u_int
7548fbd94bSPawel Jakub Dawidek gcd(u_int a, u_int b)
7648fbd94bSPawel Jakub Dawidek {
7748fbd94bSPawel Jakub Dawidek 	u_int c;
7848fbd94bSPawel Jakub Dawidek 
7948fbd94bSPawel Jakub Dawidek 	while (b != 0) {
8048fbd94bSPawel Jakub Dawidek 		c = a;
8148fbd94bSPawel Jakub Dawidek 		a = b;
8248fbd94bSPawel Jakub Dawidek 		b = (c % b);
8348fbd94bSPawel Jakub Dawidek 	}
8448fbd94bSPawel Jakub Dawidek 	return (a);
8548fbd94bSPawel Jakub Dawidek }
8648fbd94bSPawel Jakub Dawidek 
8748fbd94bSPawel Jakub Dawidek /*
8848fbd94bSPawel Jakub Dawidek  * Least Common Multiple.
8948fbd94bSPawel Jakub Dawidek  */
9048fbd94bSPawel Jakub Dawidek static u_int
9148fbd94bSPawel Jakub Dawidek lcm(u_int a, u_int b)
9248fbd94bSPawel Jakub Dawidek {
9348fbd94bSPawel Jakub Dawidek 
9448fbd94bSPawel Jakub Dawidek 	return ((a * b) / gcd(a, b));
9548fbd94bSPawel Jakub Dawidek }
9648fbd94bSPawel Jakub Dawidek 
9748fbd94bSPawel Jakub Dawidek /*
9819d16e2fSPawel Jakub Dawidek  * Return the number of valid disks.
9919d16e2fSPawel Jakub Dawidek  */
10019d16e2fSPawel Jakub Dawidek static u_int
10119d16e2fSPawel Jakub Dawidek g_concat_nvalid(struct g_concat_softc *sc)
10219d16e2fSPawel Jakub Dawidek {
10319d16e2fSPawel Jakub Dawidek 	u_int i, no;
10419d16e2fSPawel Jakub Dawidek 
10519d16e2fSPawel Jakub Dawidek 	no = 0;
10619d16e2fSPawel Jakub Dawidek 	for (i = 0; i < sc->sc_ndisks; i++) {
107a88ae49fSPawel Jakub Dawidek 		if (sc->sc_disks[i].d_consumer != NULL)
10819d16e2fSPawel Jakub Dawidek 			no++;
10919d16e2fSPawel Jakub Dawidek 	}
11019d16e2fSPawel Jakub Dawidek 
11119d16e2fSPawel Jakub Dawidek 	return (no);
11219d16e2fSPawel Jakub Dawidek }
11319d16e2fSPawel Jakub Dawidek 
11419d16e2fSPawel Jakub Dawidek static void
11519d16e2fSPawel Jakub Dawidek g_concat_remove_disk(struct g_concat_disk *disk)
11619d16e2fSPawel Jakub Dawidek {
11719d16e2fSPawel Jakub Dawidek 	struct g_consumer *cp;
11819d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
11919d16e2fSPawel Jakub Dawidek 
120df96fd6eSAlexander Motin 	g_topology_assert();
121a88ae49fSPawel Jakub Dawidek 	KASSERT(disk->d_consumer != NULL, ("Non-valid disk in %s.", __func__));
12219d16e2fSPawel Jakub Dawidek 	sc = disk->d_softc;
12319d16e2fSPawel Jakub Dawidek 	cp = disk->d_consumer;
12419d16e2fSPawel Jakub Dawidek 
125df96fd6eSAlexander Motin 	if (!disk->d_removed) {
126df96fd6eSAlexander Motin 		G_CONCAT_DEBUG(0, "Disk %s removed from %s.",
127df96fd6eSAlexander Motin 		    cp->provider->name, sc->sc_name);
128df96fd6eSAlexander Motin 		disk->d_removed = 1;
129df96fd6eSAlexander Motin 	}
13019d16e2fSPawel Jakub Dawidek 
13102637cdcSPawel Jakub Dawidek 	if (sc->sc_provider != NULL) {
132df96fd6eSAlexander Motin 		G_CONCAT_DEBUG(0, "Device %s deactivated.",
133df96fd6eSAlexander Motin 		    sc->sc_provider->name);
134*8b64f3caSAlexander Motin 		g_wither_provider(sc->sc_provider, ENXIO);
13502637cdcSPawel Jakub Dawidek 		sc->sc_provider = NULL;
13602637cdcSPawel Jakub Dawidek 	}
13719d16e2fSPawel Jakub Dawidek 
13819d16e2fSPawel Jakub Dawidek 	if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
139df96fd6eSAlexander Motin 		return;
140df96fd6eSAlexander Motin 	disk->d_consumer = NULL;
14119d16e2fSPawel Jakub Dawidek 	g_detach(cp);
14219d16e2fSPawel Jakub Dawidek 	g_destroy_consumer(cp);
143df96fd6eSAlexander Motin 	/* If there are no valid disks anymore, remove device. */
144df96fd6eSAlexander Motin 	if (LIST_EMPTY(&sc->sc_geom->consumer))
145df96fd6eSAlexander Motin 		g_concat_destroy(sc, 1);
14619d16e2fSPawel Jakub Dawidek }
14719d16e2fSPawel Jakub Dawidek 
14819d16e2fSPawel Jakub Dawidek static void
14919d16e2fSPawel Jakub Dawidek g_concat_orphan(struct g_consumer *cp)
15019d16e2fSPawel Jakub Dawidek {
15119d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
15219d16e2fSPawel Jakub Dawidek 	struct g_concat_disk *disk;
15319d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
15419d16e2fSPawel Jakub Dawidek 
15519d16e2fSPawel Jakub Dawidek 	g_topology_assert();
15619d16e2fSPawel Jakub Dawidek 	gp = cp->geom;
15719d16e2fSPawel Jakub Dawidek 	sc = gp->softc;
15819d16e2fSPawel Jakub Dawidek 	if (sc == NULL)
15919d16e2fSPawel Jakub Dawidek 		return;
16019d16e2fSPawel Jakub Dawidek 
16119d16e2fSPawel Jakub Dawidek 	disk = cp->private;
16219d16e2fSPawel Jakub Dawidek 	if (disk == NULL)	/* Possible? */
16319d16e2fSPawel Jakub Dawidek 		return;
16419d16e2fSPawel Jakub Dawidek 	g_concat_remove_disk(disk);
16519d16e2fSPawel Jakub Dawidek }
16619d16e2fSPawel Jakub Dawidek 
16719d16e2fSPawel Jakub Dawidek static int
16819d16e2fSPawel Jakub Dawidek g_concat_access(struct g_provider *pp, int dr, int dw, int de)
16919d16e2fSPawel Jakub Dawidek {
170df96fd6eSAlexander Motin 	struct g_consumer *cp1, *cp2, *tmp;
171df96fd6eSAlexander Motin 	struct g_concat_disk *disk;
17219d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
17319d16e2fSPawel Jakub Dawidek 	int error;
17419d16e2fSPawel Jakub Dawidek 
175df96fd6eSAlexander Motin 	g_topology_assert();
17619d16e2fSPawel Jakub Dawidek 	gp = pp->geom;
17719d16e2fSPawel Jakub Dawidek 
17819d16e2fSPawel Jakub Dawidek 	/* On first open, grab an extra "exclusive" bit */
17919d16e2fSPawel Jakub Dawidek 	if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)
18019d16e2fSPawel Jakub Dawidek 		de++;
18119d16e2fSPawel Jakub Dawidek 	/* ... and let go of it on last close */
182be7695cfSPawel Jakub Dawidek 	if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && (pp->ace + de) == 0)
18319d16e2fSPawel Jakub Dawidek 		de--;
18419d16e2fSPawel Jakub Dawidek 
185df96fd6eSAlexander Motin 	LIST_FOREACH_SAFE(cp1, &gp->consumer, consumer, tmp) {
18619d16e2fSPawel Jakub Dawidek 		error = g_access(cp1, dr, dw, de);
187df96fd6eSAlexander Motin 		if (error != 0)
188df96fd6eSAlexander Motin 			goto fail;
189df96fd6eSAlexander Motin 		disk = cp1->private;
190df96fd6eSAlexander Motin 		if (cp1->acr == 0 && cp1->acw == 0 && cp1->ace == 0 &&
191df96fd6eSAlexander Motin 		    disk->d_removed) {
192df96fd6eSAlexander Motin 			g_concat_remove_disk(disk); /* May destroy geom. */
193df96fd6eSAlexander Motin 		}
194df96fd6eSAlexander Motin 	}
195df96fd6eSAlexander Motin 	return (0);
196df96fd6eSAlexander Motin 
197df96fd6eSAlexander Motin fail:
19819d16e2fSPawel Jakub Dawidek 	LIST_FOREACH(cp2, &gp->consumer, consumer) {
19919d16e2fSPawel Jakub Dawidek 		if (cp1 == cp2)
200df96fd6eSAlexander Motin 			break;
20119d16e2fSPawel Jakub Dawidek 		g_access(cp2, -dr, -dw, -de);
20219d16e2fSPawel Jakub Dawidek 	}
20319d16e2fSPawel Jakub Dawidek 	return (error);
20419d16e2fSPawel Jakub Dawidek }
20519d16e2fSPawel Jakub Dawidek 
20619d16e2fSPawel Jakub Dawidek static void
207659f684eSAlexander Motin g_concat_kernel_dump(struct bio *bp)
208659f684eSAlexander Motin {
209659f684eSAlexander Motin 	struct g_concat_softc *sc;
210659f684eSAlexander Motin 	struct g_concat_disk *disk;
211659f684eSAlexander Motin 	struct bio *cbp;
212659f684eSAlexander Motin 	struct g_kerneldump *gkd;
213659f684eSAlexander Motin 	u_int i;
214659f684eSAlexander Motin 
215659f684eSAlexander Motin 	sc = bp->bio_to->geom->softc;
216659f684eSAlexander Motin 	gkd = (struct g_kerneldump *)bp->bio_data;
217659f684eSAlexander Motin 	for (i = 0; i < sc->sc_ndisks; i++) {
218659f684eSAlexander Motin 		if (sc->sc_disks[i].d_start <= gkd->offset &&
219659f684eSAlexander Motin 		    sc->sc_disks[i].d_end > gkd->offset)
220659f684eSAlexander Motin 			break;
221659f684eSAlexander Motin 	}
222659f684eSAlexander Motin 	if (i == sc->sc_ndisks)
223659f684eSAlexander Motin 		g_io_deliver(bp, EOPNOTSUPP);
224659f684eSAlexander Motin 	disk = &sc->sc_disks[i];
225659f684eSAlexander Motin 	gkd->offset -= disk->d_start;
226659f684eSAlexander Motin 	if (gkd->length > disk->d_end - disk->d_start - gkd->offset)
227659f684eSAlexander Motin 		gkd->length = disk->d_end - disk->d_start - gkd->offset;
228659f684eSAlexander Motin 	cbp = g_clone_bio(bp);
229659f684eSAlexander Motin 	if (cbp == NULL) {
230659f684eSAlexander Motin 		g_io_deliver(bp, ENOMEM);
231659f684eSAlexander Motin 		return;
232659f684eSAlexander Motin 	}
233659f684eSAlexander Motin 	cbp->bio_done = g_std_done;
234659f684eSAlexander Motin 	g_io_request(cbp, disk->d_consumer);
235659f684eSAlexander Motin 	G_CONCAT_DEBUG(1, "Kernel dump will go to %s.",
236659f684eSAlexander Motin 	    disk->d_consumer->provider->name);
237659f684eSAlexander Motin }
238659f684eSAlexander Motin 
239659f684eSAlexander Motin static void
24040ea77a0SAlexander Motin g_concat_done(struct bio *bp)
24140ea77a0SAlexander Motin {
24240ea77a0SAlexander Motin 	struct g_concat_softc *sc;
24340ea77a0SAlexander Motin 	struct bio *pbp;
24440ea77a0SAlexander Motin 
24540ea77a0SAlexander Motin 	pbp = bp->bio_parent;
24640ea77a0SAlexander Motin 	sc = pbp->bio_to->geom->softc;
24740ea77a0SAlexander Motin 	mtx_lock(&sc->sc_lock);
24840ea77a0SAlexander Motin 	if (pbp->bio_error == 0)
24940ea77a0SAlexander Motin 		pbp->bio_error = bp->bio_error;
25040ea77a0SAlexander Motin 	pbp->bio_completed += bp->bio_completed;
25140ea77a0SAlexander Motin 	pbp->bio_inbed++;
25240ea77a0SAlexander Motin 	if (pbp->bio_children == pbp->bio_inbed) {
25340ea77a0SAlexander Motin 		mtx_unlock(&sc->sc_lock);
25440ea77a0SAlexander Motin 		g_io_deliver(pbp, pbp->bio_error);
25540ea77a0SAlexander Motin 	} else
25640ea77a0SAlexander Motin 		mtx_unlock(&sc->sc_lock);
25740ea77a0SAlexander Motin 	g_destroy_bio(bp);
25840ea77a0SAlexander Motin }
25940ea77a0SAlexander Motin 
26040ea77a0SAlexander Motin static void
26142461fbaSPawel Jakub Dawidek g_concat_flush(struct g_concat_softc *sc, struct bio *bp)
26242461fbaSPawel Jakub Dawidek {
26342461fbaSPawel Jakub Dawidek 	struct bio_queue_head queue;
26442461fbaSPawel Jakub Dawidek 	struct g_consumer *cp;
26542461fbaSPawel Jakub Dawidek 	struct bio *cbp;
26642461fbaSPawel Jakub Dawidek 	u_int no;
26742461fbaSPawel Jakub Dawidek 
26842461fbaSPawel Jakub Dawidek 	bioq_init(&queue);
26942461fbaSPawel Jakub Dawidek 	for (no = 0; no < sc->sc_ndisks; no++) {
27042461fbaSPawel Jakub Dawidek 		cbp = g_clone_bio(bp);
27142461fbaSPawel Jakub Dawidek 		if (cbp == NULL) {
27240ea77a0SAlexander Motin 			while ((cbp = bioq_takefirst(&queue)) != NULL)
27342461fbaSPawel Jakub Dawidek 				g_destroy_bio(cbp);
27442461fbaSPawel Jakub Dawidek 			if (bp->bio_error == 0)
27542461fbaSPawel Jakub Dawidek 				bp->bio_error = ENOMEM;
27642461fbaSPawel Jakub Dawidek 			g_io_deliver(bp, bp->bio_error);
27742461fbaSPawel Jakub Dawidek 			return;
27842461fbaSPawel Jakub Dawidek 		}
27942461fbaSPawel Jakub Dawidek 		bioq_insert_tail(&queue, cbp);
28040ea77a0SAlexander Motin 		cbp->bio_done = g_concat_done;
28142461fbaSPawel Jakub Dawidek 		cbp->bio_caller1 = sc->sc_disks[no].d_consumer;
28242461fbaSPawel Jakub Dawidek 		cbp->bio_to = sc->sc_disks[no].d_consumer->provider;
28342461fbaSPawel Jakub Dawidek 	}
28440ea77a0SAlexander Motin 	while ((cbp = bioq_takefirst(&queue)) != NULL) {
28542461fbaSPawel Jakub Dawidek 		G_CONCAT_LOGREQ(cbp, "Sending request.");
28642461fbaSPawel Jakub Dawidek 		cp = cbp->bio_caller1;
28742461fbaSPawel Jakub Dawidek 		cbp->bio_caller1 = NULL;
28842461fbaSPawel Jakub Dawidek 		g_io_request(cbp, cp);
28942461fbaSPawel Jakub Dawidek 	}
29042461fbaSPawel Jakub Dawidek }
29142461fbaSPawel Jakub Dawidek 
29242461fbaSPawel Jakub Dawidek static void
29319d16e2fSPawel Jakub Dawidek g_concat_start(struct bio *bp)
29419d16e2fSPawel Jakub Dawidek {
2957e0b3120SPawel Jakub Dawidek 	struct bio_queue_head queue;
29619d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
29719d16e2fSPawel Jakub Dawidek 	struct g_concat_disk *disk;
29819d16e2fSPawel Jakub Dawidek 	struct g_provider *pp;
29919d16e2fSPawel Jakub Dawidek 	off_t offset, end, length, off, len;
30019d16e2fSPawel Jakub Dawidek 	struct bio *cbp;
30119d16e2fSPawel Jakub Dawidek 	char *addr;
30219d16e2fSPawel Jakub Dawidek 	u_int no;
30319d16e2fSPawel Jakub Dawidek 
30419d16e2fSPawel Jakub Dawidek 	pp = bp->bio_to;
30519d16e2fSPawel Jakub Dawidek 	sc = pp->geom->softc;
30619d16e2fSPawel Jakub Dawidek 	/*
30719d16e2fSPawel Jakub Dawidek 	 * If sc == NULL, provider's error should be set and g_concat_start()
30819d16e2fSPawel Jakub Dawidek 	 * should not be called at all.
30919d16e2fSPawel Jakub Dawidek 	 */
31019d16e2fSPawel Jakub Dawidek 	KASSERT(sc != NULL,
31119d16e2fSPawel Jakub Dawidek 	    ("Provider's error should be set (error=%d)(device=%s).",
31219d16e2fSPawel Jakub Dawidek 	    bp->bio_to->error, bp->bio_to->name));
31319d16e2fSPawel Jakub Dawidek 
31419d16e2fSPawel Jakub Dawidek 	G_CONCAT_LOGREQ(bp, "Request received.");
31519d16e2fSPawel Jakub Dawidek 
31619d16e2fSPawel Jakub Dawidek 	switch (bp->bio_cmd) {
31719d16e2fSPawel Jakub Dawidek 	case BIO_READ:
31819d16e2fSPawel Jakub Dawidek 	case BIO_WRITE:
31919d16e2fSPawel Jakub Dawidek 	case BIO_DELETE:
32019d16e2fSPawel Jakub Dawidek 		break;
32142461fbaSPawel Jakub Dawidek 	case BIO_FLUSH:
32242461fbaSPawel Jakub Dawidek 		g_concat_flush(sc, bp);
32342461fbaSPawel Jakub Dawidek 		return;
32419d16e2fSPawel Jakub Dawidek 	case BIO_GETATTR:
325659f684eSAlexander Motin 		if (strcmp("GEOM::kerneldump", bp->bio_attribute) == 0) {
326659f684eSAlexander Motin 			g_concat_kernel_dump(bp);
327659f684eSAlexander Motin 			return;
328659f684eSAlexander Motin 		}
32919d16e2fSPawel Jakub Dawidek 		/* To which provider it should be delivered? */
330659f684eSAlexander Motin 		/* FALLTHROUGH */
33119d16e2fSPawel Jakub Dawidek 	default:
33219d16e2fSPawel Jakub Dawidek 		g_io_deliver(bp, EOPNOTSUPP);
33319d16e2fSPawel Jakub Dawidek 		return;
33419d16e2fSPawel Jakub Dawidek 	}
33519d16e2fSPawel Jakub Dawidek 
33619d16e2fSPawel Jakub Dawidek 	offset = bp->bio_offset;
33719d16e2fSPawel Jakub Dawidek 	length = bp->bio_length;
33840ea77a0SAlexander Motin 	if ((bp->bio_flags & BIO_UNMAPPED) != 0)
33940ea77a0SAlexander Motin 		addr = NULL;
34040ea77a0SAlexander Motin 	else
34119d16e2fSPawel Jakub Dawidek 		addr = bp->bio_data;
34219d16e2fSPawel Jakub Dawidek 	end = offset + length;
34319d16e2fSPawel Jakub Dawidek 
3447e0b3120SPawel Jakub Dawidek 	bioq_init(&queue);
34519d16e2fSPawel Jakub Dawidek 	for (no = 0; no < sc->sc_ndisks; no++) {
34619d16e2fSPawel Jakub Dawidek 		disk = &sc->sc_disks[no];
34719d16e2fSPawel Jakub Dawidek 		if (disk->d_end <= offset)
34819d16e2fSPawel Jakub Dawidek 			continue;
34919d16e2fSPawel Jakub Dawidek 		if (disk->d_start >= end)
35019d16e2fSPawel Jakub Dawidek 			break;
35119d16e2fSPawel Jakub Dawidek 
35219d16e2fSPawel Jakub Dawidek 		off = offset - disk->d_start;
35319d16e2fSPawel Jakub Dawidek 		len = MIN(length, disk->d_end - offset);
35419d16e2fSPawel Jakub Dawidek 		length -= len;
35519d16e2fSPawel Jakub Dawidek 		offset += len;
35619d16e2fSPawel Jakub Dawidek 
35719d16e2fSPawel Jakub Dawidek 		cbp = g_clone_bio(bp);
35819d16e2fSPawel Jakub Dawidek 		if (cbp == NULL) {
35940ea77a0SAlexander Motin 			while ((cbp = bioq_takefirst(&queue)) != NULL)
3607e0b3120SPawel Jakub Dawidek 				g_destroy_bio(cbp);
36119d16e2fSPawel Jakub Dawidek 			if (bp->bio_error == 0)
36219d16e2fSPawel Jakub Dawidek 				bp->bio_error = ENOMEM;
3637e0b3120SPawel Jakub Dawidek 			g_io_deliver(bp, bp->bio_error);
36419d16e2fSPawel Jakub Dawidek 			return;
36519d16e2fSPawel Jakub Dawidek 		}
3667e0b3120SPawel Jakub Dawidek 		bioq_insert_tail(&queue, cbp);
36719d16e2fSPawel Jakub Dawidek 		/*
36819d16e2fSPawel Jakub Dawidek 		 * Fill in the component buf structure.
36919d16e2fSPawel Jakub Dawidek 		 */
37040ea77a0SAlexander Motin 		if (len == bp->bio_length)
37119d16e2fSPawel Jakub Dawidek 			cbp->bio_done = g_std_done;
37240ea77a0SAlexander Motin 		else
37340ea77a0SAlexander Motin 			cbp->bio_done = g_concat_done;
37419d16e2fSPawel Jakub Dawidek 		cbp->bio_offset = off;
37540ea77a0SAlexander Motin 		cbp->bio_length = len;
37640ea77a0SAlexander Motin 		if ((bp->bio_flags & BIO_UNMAPPED) != 0) {
37740ea77a0SAlexander Motin 			cbp->bio_ma_offset += (uintptr_t)addr;
37840ea77a0SAlexander Motin 			cbp->bio_ma += cbp->bio_ma_offset / PAGE_SIZE;
37940ea77a0SAlexander Motin 			cbp->bio_ma_offset %= PAGE_SIZE;
38040ea77a0SAlexander Motin 			cbp->bio_ma_n = round_page(cbp->bio_ma_offset +
38140ea77a0SAlexander Motin 			    cbp->bio_length) / PAGE_SIZE;
38240ea77a0SAlexander Motin 		} else
38319d16e2fSPawel Jakub Dawidek 			cbp->bio_data = addr;
38419d16e2fSPawel Jakub Dawidek 		addr += len;
38519d16e2fSPawel Jakub Dawidek 		cbp->bio_to = disk->d_consumer->provider;
3867e0b3120SPawel Jakub Dawidek 		cbp->bio_caller1 = disk;
38719d16e2fSPawel Jakub Dawidek 
38819d16e2fSPawel Jakub Dawidek 		if (length == 0)
38919d16e2fSPawel Jakub Dawidek 			break;
39019d16e2fSPawel Jakub Dawidek 	}
39119d16e2fSPawel Jakub Dawidek 	KASSERT(length == 0,
39219d16e2fSPawel Jakub Dawidek 	    ("Length is still greater than 0 (class=%s, name=%s).",
39319d16e2fSPawel Jakub Dawidek 	    bp->bio_to->geom->class->name, bp->bio_to->geom->name));
39440ea77a0SAlexander Motin 	while ((cbp = bioq_takefirst(&queue)) != NULL) {
3957e0b3120SPawel Jakub Dawidek 		G_CONCAT_LOGREQ(cbp, "Sending request.");
3967e0b3120SPawel Jakub Dawidek 		disk = cbp->bio_caller1;
3977e0b3120SPawel Jakub Dawidek 		cbp->bio_caller1 = NULL;
3987e0b3120SPawel Jakub Dawidek 		g_io_request(cbp, disk->d_consumer);
3997e0b3120SPawel Jakub Dawidek 	}
40019d16e2fSPawel Jakub Dawidek }
40119d16e2fSPawel Jakub Dawidek 
40219d16e2fSPawel Jakub Dawidek static void
40319d16e2fSPawel Jakub Dawidek g_concat_check_and_run(struct g_concat_softc *sc)
40419d16e2fSPawel Jakub Dawidek {
40519d16e2fSPawel Jakub Dawidek 	struct g_concat_disk *disk;
40640ea77a0SAlexander Motin 	struct g_provider *dp, *pp;
40748fbd94bSPawel Jakub Dawidek 	u_int no, sectorsize = 0;
40819d16e2fSPawel Jakub Dawidek 	off_t start;
40919d16e2fSPawel Jakub Dawidek 
410df96fd6eSAlexander Motin 	g_topology_assert();
41119d16e2fSPawel Jakub Dawidek 	if (g_concat_nvalid(sc) != sc->sc_ndisks)
41219d16e2fSPawel Jakub Dawidek 		return;
41319d16e2fSPawel Jakub Dawidek 
4145f9b1143SAlexander Motin 	pp = g_new_providerf(sc->sc_geom, "concat/%s", sc->sc_name);
41540ea77a0SAlexander Motin 	pp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE |
41640ea77a0SAlexander Motin 	    G_PF_ACCEPT_UNMAPPED;
41719d16e2fSPawel Jakub Dawidek 	start = 0;
41819d16e2fSPawel Jakub Dawidek 	for (no = 0; no < sc->sc_ndisks; no++) {
41919d16e2fSPawel Jakub Dawidek 		disk = &sc->sc_disks[no];
42040ea77a0SAlexander Motin 		dp = disk->d_consumer->provider;
42119d16e2fSPawel Jakub Dawidek 		disk->d_start = start;
42240ea77a0SAlexander Motin 		disk->d_end = disk->d_start + dp->mediasize;
42319d16e2fSPawel Jakub Dawidek 		if (sc->sc_type == G_CONCAT_TYPE_AUTOMATIC)
42440ea77a0SAlexander Motin 			disk->d_end -= dp->sectorsize;
42519d16e2fSPawel Jakub Dawidek 		start = disk->d_end;
42648fbd94bSPawel Jakub Dawidek 		if (no == 0)
42740ea77a0SAlexander Motin 			sectorsize = dp->sectorsize;
42840ea77a0SAlexander Motin 		else
42940ea77a0SAlexander Motin 			sectorsize = lcm(sectorsize, dp->sectorsize);
43040ea77a0SAlexander Motin 
43140ea77a0SAlexander Motin 		/* A provider underneath us doesn't support unmapped */
43240ea77a0SAlexander Motin 		if ((dp->flags & G_PF_ACCEPT_UNMAPPED) == 0) {
43340ea77a0SAlexander Motin 			G_CONCAT_DEBUG(1, "Cancelling unmapped "
43440ea77a0SAlexander Motin 			    "because of %s.", dp->name);
43540ea77a0SAlexander Motin 			pp->flags &= ~G_PF_ACCEPT_UNMAPPED;
43619d16e2fSPawel Jakub Dawidek 		}
43748fbd94bSPawel Jakub Dawidek 	}
4385f9b1143SAlexander Motin 	pp->sectorsize = sectorsize;
43919d16e2fSPawel Jakub Dawidek 	/* We have sc->sc_disks[sc->sc_ndisks - 1].d_end in 'start'. */
4405f9b1143SAlexander Motin 	pp->mediasize = start;
4415f9b1143SAlexander Motin 	pp->stripesize = sc->sc_disks[0].d_consumer->provider->stripesize;
4425f9b1143SAlexander Motin 	pp->stripeoffset = sc->sc_disks[0].d_consumer->provider->stripeoffset;
4435f9b1143SAlexander Motin 	sc->sc_provider = pp;
4445f9b1143SAlexander Motin 	g_error_provider(pp, 0);
44519d16e2fSPawel Jakub Dawidek 
446df96fd6eSAlexander Motin 	G_CONCAT_DEBUG(0, "Device %s activated.", sc->sc_provider->name);
44719d16e2fSPawel Jakub Dawidek }
44819d16e2fSPawel Jakub Dawidek 
44919d16e2fSPawel Jakub Dawidek static int
45019d16e2fSPawel Jakub Dawidek g_concat_read_metadata(struct g_consumer *cp, struct g_concat_metadata *md)
45119d16e2fSPawel Jakub Dawidek {
45219d16e2fSPawel Jakub Dawidek 	struct g_provider *pp;
45319d16e2fSPawel Jakub Dawidek 	u_char *buf;
45419d16e2fSPawel Jakub Dawidek 	int error;
45519d16e2fSPawel Jakub Dawidek 
45619d16e2fSPawel Jakub Dawidek 	g_topology_assert();
45719d16e2fSPawel Jakub Dawidek 
45819d16e2fSPawel Jakub Dawidek 	error = g_access(cp, 1, 0, 0);
45919d16e2fSPawel Jakub Dawidek 	if (error != 0)
46019d16e2fSPawel Jakub Dawidek 		return (error);
46119d16e2fSPawel Jakub Dawidek 	pp = cp->provider;
46219d16e2fSPawel Jakub Dawidek 	g_topology_unlock();
46319d16e2fSPawel Jakub Dawidek 	buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
46419d16e2fSPawel Jakub Dawidek 	    &error);
46519d16e2fSPawel Jakub Dawidek 	g_topology_lock();
46619d16e2fSPawel Jakub Dawidek 	g_access(cp, -1, 0, 0);
46719d16e2fSPawel Jakub Dawidek 	if (buf == NULL)
46819d16e2fSPawel Jakub Dawidek 		return (error);
46919d16e2fSPawel Jakub Dawidek 
47019d16e2fSPawel Jakub Dawidek 	/* Decode metadata. */
47119d16e2fSPawel Jakub Dawidek 	concat_metadata_decode(buf, md);
47219d16e2fSPawel Jakub Dawidek 	g_free(buf);
47319d16e2fSPawel Jakub Dawidek 
47419d16e2fSPawel Jakub Dawidek 	return (0);
47519d16e2fSPawel Jakub Dawidek }
47619d16e2fSPawel Jakub Dawidek 
47719d16e2fSPawel Jakub Dawidek /*
47819d16e2fSPawel Jakub Dawidek  * Add disk to given device.
47919d16e2fSPawel Jakub Dawidek  */
48019d16e2fSPawel Jakub Dawidek static int
48119d16e2fSPawel Jakub Dawidek g_concat_add_disk(struct g_concat_softc *sc, struct g_provider *pp, u_int no)
48219d16e2fSPawel Jakub Dawidek {
48319d16e2fSPawel Jakub Dawidek 	struct g_concat_disk *disk;
48402637cdcSPawel Jakub Dawidek 	struct g_consumer *cp, *fcp;
48519d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
48619d16e2fSPawel Jakub Dawidek 	int error;
48719d16e2fSPawel Jakub Dawidek 
488df96fd6eSAlexander Motin 	g_topology_assert();
48919d16e2fSPawel Jakub Dawidek 	/* Metadata corrupted? */
49019d16e2fSPawel Jakub Dawidek 	if (no >= sc->sc_ndisks)
49119d16e2fSPawel Jakub Dawidek 		return (EINVAL);
49219d16e2fSPawel Jakub Dawidek 
49319d16e2fSPawel Jakub Dawidek 	disk = &sc->sc_disks[no];
49419d16e2fSPawel Jakub Dawidek 	/* Check if disk is not already attached. */
495a88ae49fSPawel Jakub Dawidek 	if (disk->d_consumer != NULL)
49619d16e2fSPawel Jakub Dawidek 		return (EEXIST);
49719d16e2fSPawel Jakub Dawidek 
49802637cdcSPawel Jakub Dawidek 	gp = sc->sc_geom;
49902637cdcSPawel Jakub Dawidek 	fcp = LIST_FIRST(&gp->consumer);
50019d16e2fSPawel Jakub Dawidek 
50119d16e2fSPawel Jakub Dawidek 	cp = g_new_consumer(gp);
50240ea77a0SAlexander Motin 	cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
50319d16e2fSPawel Jakub Dawidek 	error = g_attach(cp, pp);
50419d16e2fSPawel Jakub Dawidek 	if (error != 0) {
50519d16e2fSPawel Jakub Dawidek 		g_destroy_consumer(cp);
50619d16e2fSPawel Jakub Dawidek 		return (error);
50719d16e2fSPawel Jakub Dawidek 	}
50819d16e2fSPawel Jakub Dawidek 
50902637cdcSPawel Jakub Dawidek 	if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) {
51002637cdcSPawel Jakub Dawidek 		error = g_access(cp, fcp->acr, fcp->acw, fcp->ace);
51119d16e2fSPawel Jakub Dawidek 		if (error != 0) {
51219d16e2fSPawel Jakub Dawidek 			g_detach(cp);
51319d16e2fSPawel Jakub Dawidek 			g_destroy_consumer(cp);
51419d16e2fSPawel Jakub Dawidek 			return (error);
51519d16e2fSPawel Jakub Dawidek 		}
51619d16e2fSPawel Jakub Dawidek 	}
51719d16e2fSPawel Jakub Dawidek 	if (sc->sc_type == G_CONCAT_TYPE_AUTOMATIC) {
51819d16e2fSPawel Jakub Dawidek 		struct g_concat_metadata md;
51919d16e2fSPawel Jakub Dawidek 
52048fbd94bSPawel Jakub Dawidek 		/* Re-read metadata. */
52119d16e2fSPawel Jakub Dawidek 		error = g_concat_read_metadata(cp, &md);
52219d16e2fSPawel Jakub Dawidek 		if (error != 0)
52319d16e2fSPawel Jakub Dawidek 			goto fail;
52419d16e2fSPawel Jakub Dawidek 
52519d16e2fSPawel Jakub Dawidek 		if (strcmp(md.md_magic, G_CONCAT_MAGIC) != 0 ||
52619d16e2fSPawel Jakub Dawidek 		    strcmp(md.md_name, sc->sc_name) != 0 ||
52719d16e2fSPawel Jakub Dawidek 		    md.md_id != sc->sc_id) {
52819d16e2fSPawel Jakub Dawidek 			G_CONCAT_DEBUG(0, "Metadata on %s changed.", pp->name);
52919d16e2fSPawel Jakub Dawidek 			goto fail;
53019d16e2fSPawel Jakub Dawidek 		}
53119d16e2fSPawel Jakub Dawidek 	}
53219d16e2fSPawel Jakub Dawidek 
53319d16e2fSPawel Jakub Dawidek 	cp->private = disk;
53419d16e2fSPawel Jakub Dawidek 	disk->d_consumer = cp;
53519d16e2fSPawel Jakub Dawidek 	disk->d_softc = sc;
53619d16e2fSPawel Jakub Dawidek 	disk->d_start = 0;	/* not yet */
53719d16e2fSPawel Jakub Dawidek 	disk->d_end = 0;	/* not yet */
538df96fd6eSAlexander Motin 	disk->d_removed = 0;
53919d16e2fSPawel Jakub Dawidek 
540ba385d00SPawel Jakub Dawidek 	G_CONCAT_DEBUG(0, "Disk %s attached to %s.", pp->name, sc->sc_name);
54119d16e2fSPawel Jakub Dawidek 
54219d16e2fSPawel Jakub Dawidek 	g_concat_check_and_run(sc);
54319d16e2fSPawel Jakub Dawidek 
54419d16e2fSPawel Jakub Dawidek 	return (0);
54519d16e2fSPawel Jakub Dawidek fail:
54602637cdcSPawel Jakub Dawidek 	if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0))
54702637cdcSPawel Jakub Dawidek 		g_access(cp, -fcp->acr, -fcp->acw, -fcp->ace);
54819d16e2fSPawel Jakub Dawidek 	g_detach(cp);
54919d16e2fSPawel Jakub Dawidek 	g_destroy_consumer(cp);
55019d16e2fSPawel Jakub Dawidek 	return (error);
55119d16e2fSPawel Jakub Dawidek }
55219d16e2fSPawel Jakub Dawidek 
55319d16e2fSPawel Jakub Dawidek static struct g_geom *
55419d16e2fSPawel Jakub Dawidek g_concat_create(struct g_class *mp, const struct g_concat_metadata *md,
55548fbd94bSPawel Jakub Dawidek     u_int type)
55619d16e2fSPawel Jakub Dawidek {
55719d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
55819d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
55919d16e2fSPawel Jakub Dawidek 	u_int no;
56019d16e2fSPawel Jakub Dawidek 
561ba385d00SPawel Jakub Dawidek 	G_CONCAT_DEBUG(1, "Creating device %s (id=%u).", md->md_name,
56219d16e2fSPawel Jakub Dawidek 	    md->md_id);
56319d16e2fSPawel Jakub Dawidek 
564aaf8e186SPawel Jakub Dawidek 	/* One disks is minimum. */
565aaf8e186SPawel Jakub Dawidek 	if (md->md_all < 1)
56619d16e2fSPawel Jakub Dawidek 		return (NULL);
56719d16e2fSPawel Jakub Dawidek 
56819d16e2fSPawel Jakub Dawidek 	/* Check for duplicate unit */
56919d16e2fSPawel Jakub Dawidek 	LIST_FOREACH(gp, &mp->geom, geom) {
57019d16e2fSPawel Jakub Dawidek 		sc = gp->softc;
57119d16e2fSPawel Jakub Dawidek 		if (sc != NULL && strcmp(sc->sc_name, md->md_name) == 0) {
57202637cdcSPawel Jakub Dawidek 			G_CONCAT_DEBUG(0, "Device %s already configured.",
57319d16e2fSPawel Jakub Dawidek 			    gp->name);
57419d16e2fSPawel Jakub Dawidek 			return (NULL);
57519d16e2fSPawel Jakub Dawidek 		}
57619d16e2fSPawel Jakub Dawidek 	}
577ba385d00SPawel Jakub Dawidek 	gp = g_new_geomf(mp, "%s", md->md_name);
57875cc259dSPawel Jakub Dawidek 	sc = malloc(sizeof(*sc), M_CONCAT, M_WAITOK | M_ZERO);
57919d16e2fSPawel Jakub Dawidek 	gp->start = g_concat_start;
58019d16e2fSPawel Jakub Dawidek 	gp->spoiled = g_concat_orphan;
58119d16e2fSPawel Jakub Dawidek 	gp->orphan = g_concat_orphan;
58219d16e2fSPawel Jakub Dawidek 	gp->access = g_concat_access;
58319d16e2fSPawel Jakub Dawidek 	gp->dumpconf = g_concat_dumpconf;
58419d16e2fSPawel Jakub Dawidek 
58519d16e2fSPawel Jakub Dawidek 	sc->sc_id = md->md_id;
58619d16e2fSPawel Jakub Dawidek 	sc->sc_ndisks = md->md_all;
58719d16e2fSPawel Jakub Dawidek 	sc->sc_disks = malloc(sizeof(struct g_concat_disk) * sc->sc_ndisks,
58819d16e2fSPawel Jakub Dawidek 	    M_CONCAT, M_WAITOK | M_ZERO);
58919d16e2fSPawel Jakub Dawidek 	for (no = 0; no < sc->sc_ndisks; no++)
590a88ae49fSPawel Jakub Dawidek 		sc->sc_disks[no].d_consumer = NULL;
59119d16e2fSPawel Jakub Dawidek 	sc->sc_type = type;
59240ea77a0SAlexander Motin 	mtx_init(&sc->sc_lock, "gconcat lock", NULL, MTX_DEF);
59319d16e2fSPawel Jakub Dawidek 
59419d16e2fSPawel Jakub Dawidek 	gp->softc = sc;
59502637cdcSPawel Jakub Dawidek 	sc->sc_geom = gp;
59602637cdcSPawel Jakub Dawidek 	sc->sc_provider = NULL;
59719d16e2fSPawel Jakub Dawidek 
598ba385d00SPawel Jakub Dawidek 	G_CONCAT_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id);
59919d16e2fSPawel Jakub Dawidek 
60019d16e2fSPawel Jakub Dawidek 	return (gp);
60119d16e2fSPawel Jakub Dawidek }
60219d16e2fSPawel Jakub Dawidek 
60319d16e2fSPawel Jakub Dawidek static int
60419d16e2fSPawel Jakub Dawidek g_concat_destroy(struct g_concat_softc *sc, boolean_t force)
60519d16e2fSPawel Jakub Dawidek {
60619d16e2fSPawel Jakub Dawidek 	struct g_provider *pp;
607df96fd6eSAlexander Motin 	struct g_consumer *cp, *cp1;
60819d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
60919d16e2fSPawel Jakub Dawidek 
61019d16e2fSPawel Jakub Dawidek 	g_topology_assert();
61119d16e2fSPawel Jakub Dawidek 
61219d16e2fSPawel Jakub Dawidek 	if (sc == NULL)
61319d16e2fSPawel Jakub Dawidek 		return (ENXIO);
61419d16e2fSPawel Jakub Dawidek 
61519d16e2fSPawel Jakub Dawidek 	pp = sc->sc_provider;
61602637cdcSPawel Jakub Dawidek 	if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) {
61719d16e2fSPawel Jakub Dawidek 		if (force) {
61819d16e2fSPawel Jakub Dawidek 			G_CONCAT_DEBUG(0, "Device %s is still open, so it "
61902637cdcSPawel Jakub Dawidek 			    "can't be definitely removed.", pp->name);
62019d16e2fSPawel Jakub Dawidek 		} else {
62119d16e2fSPawel Jakub Dawidek 			G_CONCAT_DEBUG(1,
62202637cdcSPawel Jakub Dawidek 			    "Device %s is still open (r%dw%de%d).", pp->name,
62302637cdcSPawel Jakub Dawidek 			    pp->acr, pp->acw, pp->ace);
62419d16e2fSPawel Jakub Dawidek 			return (EBUSY);
62519d16e2fSPawel Jakub Dawidek 		}
62619d16e2fSPawel Jakub Dawidek 	}
62719d16e2fSPawel Jakub Dawidek 
62802637cdcSPawel Jakub Dawidek 	gp = sc->sc_geom;
629df96fd6eSAlexander Motin 	LIST_FOREACH_SAFE(cp, &gp->consumer, consumer, cp1) {
630df96fd6eSAlexander Motin 		g_concat_remove_disk(cp->private);
631df96fd6eSAlexander Motin 		if (cp1 == NULL)
632df96fd6eSAlexander Motin 			return (0);	/* Recursion happened. */
633df96fd6eSAlexander Motin 	}
634df96fd6eSAlexander Motin 	if (!LIST_EMPTY(&gp->consumer))
635df96fd6eSAlexander Motin 		return (EINPROGRESS);
636df96fd6eSAlexander Motin 
63719d16e2fSPawel Jakub Dawidek 	gp->softc = NULL;
63802637cdcSPawel Jakub Dawidek 	KASSERT(sc->sc_provider == NULL, ("Provider still exists? (device=%s)",
63902637cdcSPawel Jakub Dawidek 	    gp->name));
64019d16e2fSPawel Jakub Dawidek 	free(sc->sc_disks, M_CONCAT);
64140ea77a0SAlexander Motin 	mtx_destroy(&sc->sc_lock);
64219d16e2fSPawel Jakub Dawidek 	free(sc, M_CONCAT);
64319d16e2fSPawel Jakub Dawidek 
64402637cdcSPawel Jakub Dawidek 	G_CONCAT_DEBUG(0, "Device %s destroyed.", gp->name);
64519d16e2fSPawel Jakub Dawidek 	g_wither_geom(gp, ENXIO);
64619d16e2fSPawel Jakub Dawidek 	return (0);
64719d16e2fSPawel Jakub Dawidek }
64819d16e2fSPawel Jakub Dawidek 
64919d16e2fSPawel Jakub Dawidek static int
65048fbd94bSPawel Jakub Dawidek g_concat_destroy_geom(struct gctl_req *req __unused,
65148fbd94bSPawel Jakub Dawidek     struct g_class *mp __unused, struct g_geom *gp)
65219d16e2fSPawel Jakub Dawidek {
65319d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
65419d16e2fSPawel Jakub Dawidek 
65519d16e2fSPawel Jakub Dawidek 	sc = gp->softc;
65619d16e2fSPawel Jakub Dawidek 	return (g_concat_destroy(sc, 0));
65719d16e2fSPawel Jakub Dawidek }
65819d16e2fSPawel Jakub Dawidek 
65919d16e2fSPawel Jakub Dawidek static struct g_geom *
66019d16e2fSPawel Jakub Dawidek g_concat_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
66119d16e2fSPawel Jakub Dawidek {
66219d16e2fSPawel Jakub Dawidek 	struct g_concat_metadata md;
66319d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
66419d16e2fSPawel Jakub Dawidek 	struct g_consumer *cp;
66519d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
66619d16e2fSPawel Jakub Dawidek 	int error;
66719d16e2fSPawel Jakub Dawidek 
66802637cdcSPawel Jakub Dawidek 	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name);
66919d16e2fSPawel Jakub Dawidek 	g_topology_assert();
67019d16e2fSPawel Jakub Dawidek 
671f8727e71SPawel Jakub Dawidek 	/* Skip providers that are already open for writing. */
672f8727e71SPawel Jakub Dawidek 	if (pp->acw > 0)
673f8727e71SPawel Jakub Dawidek 		return (NULL);
674f8727e71SPawel Jakub Dawidek 
67519d16e2fSPawel Jakub Dawidek 	G_CONCAT_DEBUG(3, "Tasting %s.", pp->name);
67619d16e2fSPawel Jakub Dawidek 
67719d16e2fSPawel Jakub Dawidek 	gp = g_new_geomf(mp, "concat:taste");
67819d16e2fSPawel Jakub Dawidek 	gp->start = g_concat_start;
67919d16e2fSPawel Jakub Dawidek 	gp->access = g_concat_access;
6800e2ff283SPawel Jakub Dawidek 	gp->orphan = g_concat_orphan;
68119d16e2fSPawel Jakub Dawidek 	cp = g_new_consumer(gp);
68219d16e2fSPawel Jakub Dawidek 	g_attach(cp, pp);
68319d16e2fSPawel Jakub Dawidek 	error = g_concat_read_metadata(cp, &md);
6847e72a708SPawel Jakub Dawidek 	g_detach(cp);
6857e72a708SPawel Jakub Dawidek 	g_destroy_consumer(cp);
6867e72a708SPawel Jakub Dawidek 	g_destroy_geom(gp);
68702637cdcSPawel Jakub Dawidek 	if (error != 0)
68819d16e2fSPawel Jakub Dawidek 		return (NULL);
68919d16e2fSPawel Jakub Dawidek 	gp = NULL;
69019d16e2fSPawel Jakub Dawidek 
69119d16e2fSPawel Jakub Dawidek 	if (strcmp(md.md_magic, G_CONCAT_MAGIC) != 0)
69219d16e2fSPawel Jakub Dawidek 		return (NULL);
69319d16e2fSPawel Jakub Dawidek 	if (md.md_version > G_CONCAT_VERSION) {
69419d16e2fSPawel Jakub Dawidek 		printf("geom_concat.ko module is too old to handle %s.\n",
69519d16e2fSPawel Jakub Dawidek 		    pp->name);
69619d16e2fSPawel Jakub Dawidek 		return (NULL);
69719d16e2fSPawel Jakub Dawidek 	}
6986c74f517SPawel Jakub Dawidek 	/*
6996c74f517SPawel Jakub Dawidek 	 * Backward compatibility:
7006c74f517SPawel Jakub Dawidek 	 */
701e6890985SPawel Jakub Dawidek 	/* There was no md_provider field in earlier versions of metadata. */
7026c74f517SPawel Jakub Dawidek 	if (md.md_version < 3)
7036c74f517SPawel Jakub Dawidek 		bzero(md.md_provider, sizeof(md.md_provider));
704e6890985SPawel Jakub Dawidek 	/* There was no md_provsize field in earlier versions of metadata. */
705e6890985SPawel Jakub Dawidek 	if (md.md_version < 4)
706e6890985SPawel Jakub Dawidek 		md.md_provsize = pp->mediasize;
7076c74f517SPawel Jakub Dawidek 
70890f2be24SAlexander Motin 	if (md.md_provider[0] != '\0' &&
70990f2be24SAlexander Motin 	    !g_compare_names(md.md_provider, pp->name))
7106c74f517SPawel Jakub Dawidek 		return (NULL);
711e6890985SPawel Jakub Dawidek 	if (md.md_provsize != pp->mediasize)
712e6890985SPawel Jakub Dawidek 		return (NULL);
71319d16e2fSPawel Jakub Dawidek 
71419d16e2fSPawel Jakub Dawidek 	/*
71519d16e2fSPawel Jakub Dawidek 	 * Let's check if device already exists.
71619d16e2fSPawel Jakub Dawidek 	 */
717c2496c87SPawel Jakub Dawidek 	sc = NULL;
71819d16e2fSPawel Jakub Dawidek 	LIST_FOREACH(gp, &mp->geom, geom) {
71919d16e2fSPawel Jakub Dawidek 		sc = gp->softc;
72019d16e2fSPawel Jakub Dawidek 		if (sc == NULL)
72119d16e2fSPawel Jakub Dawidek 			continue;
72219d16e2fSPawel Jakub Dawidek 		if (sc->sc_type != G_CONCAT_TYPE_AUTOMATIC)
72319d16e2fSPawel Jakub Dawidek 			continue;
72419d16e2fSPawel Jakub Dawidek 		if (strcmp(md.md_name, sc->sc_name) != 0)
72519d16e2fSPawel Jakub Dawidek 			continue;
72619d16e2fSPawel Jakub Dawidek 		if (md.md_id != sc->sc_id)
72719d16e2fSPawel Jakub Dawidek 			continue;
72819d16e2fSPawel Jakub Dawidek 		break;
72919d16e2fSPawel Jakub Dawidek 	}
73019d16e2fSPawel Jakub Dawidek 	if (gp != NULL) {
73119d16e2fSPawel Jakub Dawidek 		G_CONCAT_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
73219d16e2fSPawel Jakub Dawidek 		error = g_concat_add_disk(sc, pp, md.md_no);
73319d16e2fSPawel Jakub Dawidek 		if (error != 0) {
73402637cdcSPawel Jakub Dawidek 			G_CONCAT_DEBUG(0,
73502637cdcSPawel Jakub Dawidek 			    "Cannot add disk %s to %s (error=%d).", pp->name,
73602637cdcSPawel Jakub Dawidek 			    gp->name, error);
73719d16e2fSPawel Jakub Dawidek 			return (NULL);
73819d16e2fSPawel Jakub Dawidek 		}
73919d16e2fSPawel Jakub Dawidek 	} else {
74048fbd94bSPawel Jakub Dawidek 		gp = g_concat_create(mp, &md, G_CONCAT_TYPE_AUTOMATIC);
74119d16e2fSPawel Jakub Dawidek 		if (gp == NULL) {
742ba385d00SPawel Jakub Dawidek 			G_CONCAT_DEBUG(0, "Cannot create device %s.",
74319d16e2fSPawel Jakub Dawidek 			    md.md_name);
74419d16e2fSPawel Jakub Dawidek 			return (NULL);
74519d16e2fSPawel Jakub Dawidek 		}
74619d16e2fSPawel Jakub Dawidek 		sc = gp->softc;
74719d16e2fSPawel Jakub Dawidek 		G_CONCAT_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
74819d16e2fSPawel Jakub Dawidek 		error = g_concat_add_disk(sc, pp, md.md_no);
74919d16e2fSPawel Jakub Dawidek 		if (error != 0) {
75002637cdcSPawel Jakub Dawidek 			G_CONCAT_DEBUG(0,
75102637cdcSPawel Jakub Dawidek 			    "Cannot add disk %s to %s (error=%d).", pp->name,
75202637cdcSPawel Jakub Dawidek 			    gp->name, error);
75319d16e2fSPawel Jakub Dawidek 			g_concat_destroy(sc, 1);
75419d16e2fSPawel Jakub Dawidek 			return (NULL);
75519d16e2fSPawel Jakub Dawidek 		}
75619d16e2fSPawel Jakub Dawidek 	}
75719d16e2fSPawel Jakub Dawidek 
75819d16e2fSPawel Jakub Dawidek 	return (gp);
75919d16e2fSPawel Jakub Dawidek }
76019d16e2fSPawel Jakub Dawidek 
76119d16e2fSPawel Jakub Dawidek static void
76219d16e2fSPawel Jakub Dawidek g_concat_ctl_create(struct gctl_req *req, struct g_class *mp)
76319d16e2fSPawel Jakub Dawidek {
76419d16e2fSPawel Jakub Dawidek 	u_int attached, no;
76502637cdcSPawel Jakub Dawidek 	struct g_concat_metadata md;
76619d16e2fSPawel Jakub Dawidek 	struct g_provider *pp;
76719d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
76819d16e2fSPawel Jakub Dawidek 	struct g_geom *gp;
76919d16e2fSPawel Jakub Dawidek 	struct sbuf *sb;
77002637cdcSPawel Jakub Dawidek 	const char *name;
77102637cdcSPawel Jakub Dawidek 	char param[16];
77202637cdcSPawel Jakub Dawidek 	int *nargs;
77319d16e2fSPawel Jakub Dawidek 
77419d16e2fSPawel Jakub Dawidek 	g_topology_assert();
77502637cdcSPawel Jakub Dawidek 	nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
77602637cdcSPawel Jakub Dawidek 	if (nargs == NULL) {
77702637cdcSPawel Jakub Dawidek 		gctl_error(req, "No '%s' argument.", "nargs");
77819d16e2fSPawel Jakub Dawidek 		return;
77919d16e2fSPawel Jakub Dawidek 	}
780aaf8e186SPawel Jakub Dawidek 	if (*nargs < 2) {
78102637cdcSPawel Jakub Dawidek 		gctl_error(req, "Too few arguments.");
78219d16e2fSPawel Jakub Dawidek 		return;
78319d16e2fSPawel Jakub Dawidek 	}
78419d16e2fSPawel Jakub Dawidek 
78502637cdcSPawel Jakub Dawidek 	strlcpy(md.md_magic, G_CONCAT_MAGIC, sizeof(md.md_magic));
78602637cdcSPawel Jakub Dawidek 	md.md_version = G_CONCAT_VERSION;
78702637cdcSPawel Jakub Dawidek 	name = gctl_get_asciiparam(req, "arg0");
78802637cdcSPawel Jakub Dawidek 	if (name == NULL) {
78902637cdcSPawel Jakub Dawidek 		gctl_error(req, "No 'arg%u' argument.", 0);
79002637cdcSPawel Jakub Dawidek 		return;
79102637cdcSPawel Jakub Dawidek 	}
79202637cdcSPawel Jakub Dawidek 	strlcpy(md.md_name, name, sizeof(md.md_name));
79302637cdcSPawel Jakub Dawidek 	md.md_id = arc4random();
79402637cdcSPawel Jakub Dawidek 	md.md_no = 0;
79502637cdcSPawel Jakub Dawidek 	md.md_all = *nargs - 1;
7966c74f517SPawel Jakub Dawidek 	bzero(md.md_provider, sizeof(md.md_provider));
797e6890985SPawel Jakub Dawidek 	/* This field is not important here. */
798e6890985SPawel Jakub Dawidek 	md.md_provsize = 0;
79902637cdcSPawel Jakub Dawidek 
80019d16e2fSPawel Jakub Dawidek 	/* Check all providers are valid */
80102637cdcSPawel Jakub Dawidek 	for (no = 1; no < *nargs; no++) {
80202637cdcSPawel Jakub Dawidek 		snprintf(param, sizeof(param), "arg%u", no);
80302637cdcSPawel Jakub Dawidek 		name = gctl_get_asciiparam(req, param);
80402637cdcSPawel Jakub Dawidek 		if (name == NULL) {
80502637cdcSPawel Jakub Dawidek 			gctl_error(req, "No 'arg%u' argument.", no);
80602637cdcSPawel Jakub Dawidek 			return;
80702637cdcSPawel Jakub Dawidek 		}
80802637cdcSPawel Jakub Dawidek 		if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
80902637cdcSPawel Jakub Dawidek 			name += strlen("/dev/");
81002637cdcSPawel Jakub Dawidek 		pp = g_provider_by_name(name);
81119d16e2fSPawel Jakub Dawidek 		if (pp == NULL) {
81202637cdcSPawel Jakub Dawidek 			G_CONCAT_DEBUG(1, "Disk %s is invalid.", name);
81302637cdcSPawel Jakub Dawidek 			gctl_error(req, "Disk %s is invalid.", name);
81419d16e2fSPawel Jakub Dawidek 			return;
81519d16e2fSPawel Jakub Dawidek 		}
81619d16e2fSPawel Jakub Dawidek 	}
81719d16e2fSPawel Jakub Dawidek 
81802637cdcSPawel Jakub Dawidek 	gp = g_concat_create(mp, &md, G_CONCAT_TYPE_MANUAL);
81919d16e2fSPawel Jakub Dawidek 	if (gp == NULL) {
820ba385d00SPawel Jakub Dawidek 		gctl_error(req, "Can't configure %s.", md.md_name);
82119d16e2fSPawel Jakub Dawidek 		return;
82219d16e2fSPawel Jakub Dawidek 	}
82319d16e2fSPawel Jakub Dawidek 
82419d16e2fSPawel Jakub Dawidek 	sc = gp->softc;
8252616144eSDag-Erling Smørgrav 	sb = sbuf_new_auto();
82619d16e2fSPawel Jakub Dawidek 	sbuf_printf(sb, "Can't attach disk(s) to %s:", gp->name);
82702637cdcSPawel Jakub Dawidek 	for (attached = 0, no = 1; no < *nargs; no++) {
82802637cdcSPawel Jakub Dawidek 		snprintf(param, sizeof(param), "arg%u", no);
82902637cdcSPawel Jakub Dawidek 		name = gctl_get_asciiparam(req, param);
830916cd41cSEdward Tomasz Napierala 		if (name == NULL) {
831916cd41cSEdward Tomasz Napierala 			gctl_error(req, "No 'arg%d' argument.", no);
832916cd41cSEdward Tomasz Napierala 			return;
833916cd41cSEdward Tomasz Napierala 		}
83402637cdcSPawel Jakub Dawidek 		if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
83502637cdcSPawel Jakub Dawidek 			name += strlen("/dev/");
83602637cdcSPawel Jakub Dawidek 		pp = g_provider_by_name(name);
83702637cdcSPawel Jakub Dawidek 		KASSERT(pp != NULL, ("Provider %s disappear?!", name));
83802637cdcSPawel Jakub Dawidek 		if (g_concat_add_disk(sc, pp, no - 1) != 0) {
83919d16e2fSPawel Jakub Dawidek 			G_CONCAT_DEBUG(1, "Disk %u (%s) not attached to %s.",
84002637cdcSPawel Jakub Dawidek 			    no, pp->name, gp->name);
84119d16e2fSPawel Jakub Dawidek 			sbuf_printf(sb, " %s", pp->name);
84219d16e2fSPawel Jakub Dawidek 			continue;
84319d16e2fSPawel Jakub Dawidek 		}
84419d16e2fSPawel Jakub Dawidek 		attached++;
84519d16e2fSPawel Jakub Dawidek 	}
84619d16e2fSPawel Jakub Dawidek 	sbuf_finish(sb);
84702637cdcSPawel Jakub Dawidek 	if (md.md_all != attached) {
84819d16e2fSPawel Jakub Dawidek 		g_concat_destroy(gp->softc, 1);
84919d16e2fSPawel Jakub Dawidek 		gctl_error(req, "%s", sbuf_data(sb));
85019d16e2fSPawel Jakub Dawidek 	}
85119d16e2fSPawel Jakub Dawidek 	sbuf_delete(sb);
85219d16e2fSPawel Jakub Dawidek }
85319d16e2fSPawel Jakub Dawidek 
85402637cdcSPawel Jakub Dawidek static struct g_concat_softc *
85502637cdcSPawel Jakub Dawidek g_concat_find_device(struct g_class *mp, const char *name)
85619d16e2fSPawel Jakub Dawidek {
85719d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
85802637cdcSPawel Jakub Dawidek 	struct g_geom *gp;
85902637cdcSPawel Jakub Dawidek 
86002637cdcSPawel Jakub Dawidek 	LIST_FOREACH(gp, &mp->geom, geom) {
86102637cdcSPawel Jakub Dawidek 		sc = gp->softc;
86202637cdcSPawel Jakub Dawidek 		if (sc == NULL)
86302637cdcSPawel Jakub Dawidek 			continue;
864ba385d00SPawel Jakub Dawidek 		if (strcmp(sc->sc_name, name) == 0)
86502637cdcSPawel Jakub Dawidek 			return (sc);
86602637cdcSPawel Jakub Dawidek 	}
86702637cdcSPawel Jakub Dawidek 	return (NULL);
86802637cdcSPawel Jakub Dawidek }
86902637cdcSPawel Jakub Dawidek 
87002637cdcSPawel Jakub Dawidek static void
87102637cdcSPawel Jakub Dawidek g_concat_ctl_destroy(struct gctl_req *req, struct g_class *mp)
87202637cdcSPawel Jakub Dawidek {
87302637cdcSPawel Jakub Dawidek 	struct g_concat_softc *sc;
87402637cdcSPawel Jakub Dawidek 	int *force, *nargs, error;
87502637cdcSPawel Jakub Dawidek 	const char *name;
87602637cdcSPawel Jakub Dawidek 	char param[16];
87702637cdcSPawel Jakub Dawidek 	u_int i;
87819d16e2fSPawel Jakub Dawidek 
87919d16e2fSPawel Jakub Dawidek 	g_topology_assert();
88048fbd94bSPawel Jakub Dawidek 
88102637cdcSPawel Jakub Dawidek 	nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
88202637cdcSPawel Jakub Dawidek 	if (nargs == NULL) {
88302637cdcSPawel Jakub Dawidek 		gctl_error(req, "No '%s' argument.", "nargs");
88402637cdcSPawel Jakub Dawidek 		return;
88502637cdcSPawel Jakub Dawidek 	}
88602637cdcSPawel Jakub Dawidek 	if (*nargs <= 0) {
88702637cdcSPawel Jakub Dawidek 		gctl_error(req, "Missing device(s).");
88802637cdcSPawel Jakub Dawidek 		return;
88902637cdcSPawel Jakub Dawidek 	}
89019d16e2fSPawel Jakub Dawidek 	force = gctl_get_paraml(req, "force", sizeof(*force));
89119d16e2fSPawel Jakub Dawidek 	if (force == NULL) {
89248fbd94bSPawel Jakub Dawidek 		gctl_error(req, "No '%s' argument.", "force");
89319d16e2fSPawel Jakub Dawidek 		return;
89419d16e2fSPawel Jakub Dawidek 	}
89502637cdcSPawel Jakub Dawidek 
89602637cdcSPawel Jakub Dawidek 	for (i = 0; i < (u_int)*nargs; i++) {
89702637cdcSPawel Jakub Dawidek 		snprintf(param, sizeof(param), "arg%u", i);
89802637cdcSPawel Jakub Dawidek 		name = gctl_get_asciiparam(req, param);
89902637cdcSPawel Jakub Dawidek 		if (name == NULL) {
90002637cdcSPawel Jakub Dawidek 			gctl_error(req, "No 'arg%u' argument.", i);
90102637cdcSPawel Jakub Dawidek 			return;
90202637cdcSPawel Jakub Dawidek 		}
90302637cdcSPawel Jakub Dawidek 		sc = g_concat_find_device(mp, name);
90419d16e2fSPawel Jakub Dawidek 		if (sc == NULL) {
90502637cdcSPawel Jakub Dawidek 			gctl_error(req, "No such device: %s.", name);
90619d16e2fSPawel Jakub Dawidek 			return;
90719d16e2fSPawel Jakub Dawidek 		}
90819d16e2fSPawel Jakub Dawidek 		error = g_concat_destroy(sc, *force);
90919d16e2fSPawel Jakub Dawidek 		if (error != 0) {
91019d16e2fSPawel Jakub Dawidek 			gctl_error(req, "Cannot destroy device %s (error=%d).",
911ba385d00SPawel Jakub Dawidek 			    sc->sc_name, error);
91219d16e2fSPawel Jakub Dawidek 			return;
91319d16e2fSPawel Jakub Dawidek 		}
91419d16e2fSPawel Jakub Dawidek 	}
91502637cdcSPawel Jakub Dawidek }
91619d16e2fSPawel Jakub Dawidek 
91719d16e2fSPawel Jakub Dawidek static void
91819d16e2fSPawel Jakub Dawidek g_concat_config(struct gctl_req *req, struct g_class *mp, const char *verb)
91919d16e2fSPawel Jakub Dawidek {
92002637cdcSPawel Jakub Dawidek 	uint32_t *version;
92119d16e2fSPawel Jakub Dawidek 
92219d16e2fSPawel Jakub Dawidek 	g_topology_assert();
92319d16e2fSPawel Jakub Dawidek 
92402637cdcSPawel Jakub Dawidek 	version = gctl_get_paraml(req, "version", sizeof(*version));
92502637cdcSPawel Jakub Dawidek 	if (version == NULL) {
92602637cdcSPawel Jakub Dawidek 		gctl_error(req, "No '%s' argument.", "version");
92702637cdcSPawel Jakub Dawidek 		return;
92802637cdcSPawel Jakub Dawidek 	}
92902637cdcSPawel Jakub Dawidek 	if (*version != G_CONCAT_VERSION) {
93002637cdcSPawel Jakub Dawidek 		gctl_error(req, "Userland and kernel parts are out of sync.");
93119d16e2fSPawel Jakub Dawidek 		return;
93219d16e2fSPawel Jakub Dawidek 	}
93319d16e2fSPawel Jakub Dawidek 
93402637cdcSPawel Jakub Dawidek 	if (strcmp(verb, "create") == 0) {
93502637cdcSPawel Jakub Dawidek 		g_concat_ctl_create(req, mp);
93619d16e2fSPawel Jakub Dawidek 		return;
937a2e31b8bSPawel Jakub Dawidek 	} else if (strcmp(verb, "destroy") == 0 ||
938a2e31b8bSPawel Jakub Dawidek 	    strcmp(verb, "stop") == 0) {
93902637cdcSPawel Jakub Dawidek 		g_concat_ctl_destroy(req, mp);
94019d16e2fSPawel Jakub Dawidek 		return;
94119d16e2fSPawel Jakub Dawidek 	}
94248fbd94bSPawel Jakub Dawidek 	gctl_error(req, "Unknown verb.");
94319d16e2fSPawel Jakub Dawidek }
94419d16e2fSPawel Jakub Dawidek 
94519d16e2fSPawel Jakub Dawidek static void
94619d16e2fSPawel Jakub Dawidek g_concat_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
94719d16e2fSPawel Jakub Dawidek     struct g_consumer *cp, struct g_provider *pp)
94819d16e2fSPawel Jakub Dawidek {
94919d16e2fSPawel Jakub Dawidek 	struct g_concat_softc *sc;
95019d16e2fSPawel Jakub Dawidek 
9513fb17452SPawel Jakub Dawidek 	g_topology_assert();
95219d16e2fSPawel Jakub Dawidek 	sc = gp->softc;
9531d723f1dSPawel Jakub Dawidek 	if (sc == NULL)
95419d16e2fSPawel Jakub Dawidek 		return;
9551d723f1dSPawel Jakub Dawidek 	if (pp != NULL) {
9561d723f1dSPawel Jakub Dawidek 		/* Nothing here. */
9571d723f1dSPawel Jakub Dawidek 	} else if (cp != NULL) {
9581d723f1dSPawel Jakub Dawidek 		struct g_concat_disk *disk;
9591d723f1dSPawel Jakub Dawidek 
9601d723f1dSPawel Jakub Dawidek 		disk = cp->private;
9611d723f1dSPawel Jakub Dawidek 		if (disk == NULL)
9621d723f1dSPawel Jakub Dawidek 			return;
9631d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<End>%jd</End>\n", indent,
9641d723f1dSPawel Jakub Dawidek 		    (intmax_t)disk->d_end);
9651d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<Start>%jd</Start>\n", indent,
9661d723f1dSPawel Jakub Dawidek 		    (intmax_t)disk->d_start);
9671d723f1dSPawel Jakub Dawidek 	} else {
9681d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id);
9691d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<Type>", indent);
97019d16e2fSPawel Jakub Dawidek 		switch (sc->sc_type) {
97119d16e2fSPawel Jakub Dawidek 		case G_CONCAT_TYPE_AUTOMATIC:
9721d723f1dSPawel Jakub Dawidek 			sbuf_printf(sb, "AUTOMATIC");
97319d16e2fSPawel Jakub Dawidek 			break;
97419d16e2fSPawel Jakub Dawidek 		case G_CONCAT_TYPE_MANUAL:
9751d723f1dSPawel Jakub Dawidek 			sbuf_printf(sb, "MANUAL");
97619d16e2fSPawel Jakub Dawidek 			break;
97719d16e2fSPawel Jakub Dawidek 		default:
9781d723f1dSPawel Jakub Dawidek 			sbuf_printf(sb, "UNKNOWN");
97919d16e2fSPawel Jakub Dawidek 			break;
98019d16e2fSPawel Jakub Dawidek 		}
9811d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "</Type>\n");
9821d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<Status>Total=%u, Online=%u</Status>\n",
9831d723f1dSPawel Jakub Dawidek 		    indent, sc->sc_ndisks, g_concat_nvalid(sc));
9841d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<State>", indent);
9851d723f1dSPawel Jakub Dawidek 		if (sc->sc_provider != NULL && sc->sc_provider->error == 0)
9861d723f1dSPawel Jakub Dawidek 			sbuf_printf(sb, "UP");
9873fb17452SPawel Jakub Dawidek 		else
9881d723f1dSPawel Jakub Dawidek 			sbuf_printf(sb, "DOWN");
9891d723f1dSPawel Jakub Dawidek 		sbuf_printf(sb, "</State>\n");
9901d723f1dSPawel Jakub Dawidek 	}
99119d16e2fSPawel Jakub Dawidek }
99219d16e2fSPawel Jakub Dawidek 
99319d16e2fSPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_concat_class, g_concat);
994