1/*-
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $FreeBSD: head/sys/geom/geom_dev.c 93248 2002-03-26 21:40:06Z phk $
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/malloc.h>
41#include <sys/kernel.h>
42#include <sys/conf.h>
43#include <sys/bio.h>
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71 /* dump */ nodump,
72 /* psize */ g_dev_psize,
73 /* flags */ D_DISK | D_CANFREE | D_TRACKCLOSE,
74};
75
76static g_taste_t g_dev_taste;
77static g_orphan_t g_dev_orphan;
78
79static struct g_class g_dev_class = {
80 "DEV-class",
81 g_dev_taste,
82 NULL,
83 g_dev_orphan,
84 NULL,
85 G_CLASS_INITSTUFF
86};
87
88static void
89g_dev_clone(void *arg, char *name, int namelen, dev_t *dev)
90{
91 struct g_geom *gp;
92
93 if (*dev != NODEV)
94 return;
95
96 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s)", name);
97 g_rattle();
98
99 /* XXX: can I drop Giant here ??? */
100 /* g_topology_lock(); */
101 LIST_FOREACH(gp, &g_dev_class.geom, geom) {
102 if (strcmp(gp->name, name))
103 continue;
104 *dev = gp->softc;
105 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s) = %p", name, *dev);
106 return;
107 }
108 /* g_topology_unlock(); */
109 return;
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119 EVENTHANDLER_REGISTER(dev_clone, g_dev_clone, 0, 1000);
120 once++;
121 }
122}
123
124SYSINIT(geomdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE,g_dev_register_cloner,NULL);
125
126static struct g_geom *
127g_dev_taste(struct g_class *mp, struct g_provider *pp, struct thread *tp __unused, int insist __unused)
128{
129 struct g_geom *gp;
130 struct g_consumer *cp;
131 static int unit;
132 u_int secsize;
133 off_t mediasize;
134 int error, j;
135 dev_t dev;
136
137 g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name);
138 g_topology_assert();
139 LIST_FOREACH(cp, &pp->consumers, consumers)
140 if (cp->geom->class == mp)
141 return (NULL);
142 gp = g_new_geomf(mp, pp->name);
143 cp = g_new_consumer(gp);
144 g_attach(cp, pp);
145 error = g_access_rel(cp, 1, 0, 0);
146 g_topology_unlock();
147 if (!error) {
148 j = sizeof secsize;
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277 else
278 error = g_io_getattr("GEOM::ioctl", cp, &i, gio, td);
279 g_free(gio);
280 break;
281 }
282
283 if (error != 0 && cmd == DIOCGDVIRGIN) {
284 g_topology_lock();
285 gp = g_create_geomf("BSD-class", cp->provider, NULL);
286 g_topology_unlock();
287 }
288 PICKUP_GIANT();
289 g_rattle();
290 if (error == ENOIOCTL) {
291 i = IOCGROUP(cmd);
292 printf("IOCTL(0x%lx) \"%s\"", cmd, gp->name);
293 if (i > ' ' && i <= '~')
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381 destroy_dev(dev);
382 if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
383 g_access_rel(cp, -cp->acr, -cp->acw, -cp->ace);
384 g_dettach(cp);
385 g_destroy_consumer(cp);
386 g_destroy_geom(gp);
387}
388
389DECLARE_GEOM_CLASS(g_dev_class, g_dev)
390
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $FreeBSD: head/sys/geom/geom_dev.c 93248 2002-03-26 21:40:06Z phk $
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/malloc.h>
41#include <sys/kernel.h>
42#include <sys/conf.h>
43#include <sys/bio.h>
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71 /* dump */ nodump,
72 /* psize */ g_dev_psize,
73 /* flags */ D_DISK | D_CANFREE | D_TRACKCLOSE,
74};
75
76static g_taste_t g_dev_taste;
77static g_orphan_t g_dev_orphan;
78
79static struct g_class g_dev_class = {
80 "DEV-class",
81 g_dev_taste,
82 NULL,
83 g_dev_orphan,
84 NULL,
85 G_CLASS_INITSTUFF
86};
87
88static void
89g_dev_clone(void *arg, char *name, int namelen, dev_t *dev)
90{
91 struct g_geom *gp;
92
93 if (*dev != NODEV)
94 return;
95
96 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s)", name);
97 g_rattle();
98
99 /* XXX: can I drop Giant here ??? */
100 /* g_topology_lock(); */
101 LIST_FOREACH(gp, &g_dev_class.geom, geom) {
102 if (strcmp(gp->name, name))
103 continue;
104 *dev = gp->softc;
105 g_trace(G_T_TOPOLOGY, "g_dev_clone(%s) = %p", name, *dev);
106 return;
107 }
108 /* g_topology_unlock(); */
109 return;
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119 EVENTHANDLER_REGISTER(dev_clone, g_dev_clone, 0, 1000);
120 once++;
121 }
122}
123
124SYSINIT(geomdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE,g_dev_register_cloner,NULL);
125
126static struct g_geom *
127g_dev_taste(struct g_class *mp, struct g_provider *pp, struct thread *tp __unused, int insist __unused)
128{
129 struct g_geom *gp;
130 struct g_consumer *cp;
131 static int unit;
132 u_int secsize;
133 off_t mediasize;
134 int error, j;
135 dev_t dev;
136
137 g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name);
138 g_topology_assert();
139 LIST_FOREACH(cp, &pp->consumers, consumers)
140 if (cp->geom->class == mp)
141 return (NULL);
142 gp = g_new_geomf(mp, pp->name);
143 cp = g_new_consumer(gp);
144 g_attach(cp, pp);
145 error = g_access_rel(cp, 1, 0, 0);
146 g_topology_unlock();
147 if (!error) {
148 j = sizeof secsize;
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277 else
278 error = g_io_getattr("GEOM::ioctl", cp, &i, gio, td);
279 g_free(gio);
280 break;
281 }
282
283 if (error != 0 && cmd == DIOCGDVIRGIN) {
284 g_topology_lock();
285 gp = g_create_geomf("BSD-class", cp->provider, NULL);
286 g_topology_unlock();
287 }
288 PICKUP_GIANT();
289 g_rattle();
290 if (error == ENOIOCTL) {
291 i = IOCGROUP(cmd);
292 printf("IOCTL(0x%lx) \"%s\"", cmd, gp->name);
293 if (i > ' ' && i <= '~')
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381 destroy_dev(dev);
382 if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
383 g_access_rel(cp, -cp->acr, -cp->acw, -cp->ace);
384 g_dettach(cp);
385 g_destroy_consumer(cp);
386 g_destroy_geom(gp);
387}
388
389DECLARE_GEOM_CLASS(g_dev_class, g_dev)
390