1/*-
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
9 * DARPA CHATS research program.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The names of the authors may not be used to endorse or promote
20 * products derived from this software without specific prior written
21 * permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
9 * DARPA CHATS research program.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The names of the authors may not be used to endorse or promote
20 * products derived from this software without specific prior written
21 * permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
|
37__FBSDID("$FreeBSD: head/sys/geom/geom_disk.c 119652 2003-09-01 12:03:13Z phk $");
| 37__FBSDID("$FreeBSD: head/sys/geom/geom_disk.c 119660 2003-09-01 20:45:32Z phk $");
|
38
39#include "opt_geom.h"
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/kernel.h>
44#include <sys/sysctl.h>
45#include <sys/bio.h>
46#include <sys/conf.h>
47#include <sys/fcntl.h>
48#include <sys/malloc.h>
49#include <sys/sysctl.h>
50#include <sys/devicestat.h>
51#include <machine/md_var.h>
52
53#include <sys/lock.h>
54#include <sys/mutex.h>
55#include <geom/geom.h>
56#include <geom/geom_disk.h>
57#include <geom/geom_int.h>
58
59static struct mtx g_disk_done_mtx;
60
61static g_access_t g_disk_access;
62static g_init_t g_disk_init;
63static g_fini_t g_disk_fini;
64
65struct g_class g_disk_class = {
66 .name = "DISK",
67 .init = g_disk_init,
68 .fini = g_disk_fini,
69};
70
71static void
72g_disk_init(struct g_class *mp __unused)
73{
74
75 mtx_init(&g_disk_done_mtx, "g_disk_done", MTX_DEF, 0);
76}
77
78static void
79g_disk_fini(struct g_class *mp __unused)
80{
81
82 mtx_destroy(&g_disk_done_mtx);
83}
84
85DECLARE_GEOM_CLASS(g_disk_class, g_disk);
86
87static void __inline
88g_disk_lock_giant(struct disk *dp)
89{
90 if (dp->d_flags & DISKFLAG_NOGIANT)
91 return;
92 mtx_lock(&Giant);
93}
94
95static void __inline
96g_disk_unlock_giant(struct disk *dp)
97{
98 if (dp->d_flags & DISKFLAG_NOGIANT)
99 return;
100 mtx_unlock(&Giant);
101}
102
103static int
104g_disk_access(struct g_provider *pp, int r, int w, int e)
105{
106 struct disk *dp;
107 int error;
108
109 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
110 pp->name, r, w, e);
111 g_topology_assert();
112 r += pp->acr;
113 w += pp->acw;
114 e += pp->ace;
115 dp = pp->geom->softc;
116 if (dp == NULL)
117 return (ENXIO);
118 error = 0;
119 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
120 if (dp->d_open != NULL) {
121 g_disk_lock_giant(dp);
122 error = dp->d_open(dp);
123 if (error != 0)
124 printf("Opened disk %s -> %d\n",
125 pp->name, error);
126 g_disk_unlock_giant(dp);
127 }
128 pp->mediasize = dp->d_mediasize;
129 pp->sectorsize = dp->d_sectorsize;
130 dp->d_flags |= DISKFLAG_OPEN;
131 if (dp->d_maxsize == 0) {
132 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
133 dp->d_name, dp->d_unit);
134 dp->d_maxsize = DFLTPHYS;
135 }
136 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
137 if (dp->d_close != NULL) {
138 g_disk_lock_giant(dp);
139 error = dp->d_close(dp);
140 if (error != 0)
141 printf("Closed disk %s -> %d\n",
142 pp->name, error);
143 g_disk_unlock_giant(dp);
144 }
145 dp->d_flags &= ~DISKFLAG_OPEN;
146 }
147 return (error);
148}
149
150static void
151g_disk_kerneldump(struct bio *bp, struct disk *dp)
152{
153 int error;
154 struct g_kerneldump *gkd;
155 struct dumperinfo di;
156 struct g_geom *gp;
157
158 gkd = (struct g_kerneldump*)bp->bio_data;
159 gp = bp->bio_to->geom;
160 g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)",
161 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
162 di.dumper = dp->d_dump;
163 di.priv = dp;
164 di.blocksize = dp->d_sectorsize;
165 di.mediaoffset = gkd->offset;
166 di.mediasize = gkd->length;
167 error = set_dumper(&di);
168 g_io_deliver(bp, error);
169}
170
171static void
172g_disk_done(struct bio *bp)
173{
174 struct bio *bp2;
175 struct disk *dp;
176
177 /* See "notes" for why we need a mutex here */
178 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
179 mtx_lock(&g_disk_done_mtx);
180 bp->bio_completed = bp->bio_length - bp->bio_resid;
181
182 bp2 = bp->bio_parent;
183 dp = bp2->bio_to->geom->softc;
184 if (bp2->bio_error == 0)
185 bp2->bio_error = bp->bio_error;
186 bp2->bio_completed += bp->bio_completed;
187 g_destroy_bio(bp);
188 bp2->bio_inbed++;
189 if (bp2->bio_children == bp2->bio_inbed) {
190 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
191 devstat_end_transaction_bio(dp->d_devstat, bp2);
192 g_io_deliver(bp2, bp2->bio_error);
193 }
194 mtx_unlock(&g_disk_done_mtx);
195}
196
| 38
39#include "opt_geom.h"
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/kernel.h>
44#include <sys/sysctl.h>
45#include <sys/bio.h>
46#include <sys/conf.h>
47#include <sys/fcntl.h>
48#include <sys/malloc.h>
49#include <sys/sysctl.h>
50#include <sys/devicestat.h>
51#include <machine/md_var.h>
52
53#include <sys/lock.h>
54#include <sys/mutex.h>
55#include <geom/geom.h>
56#include <geom/geom_disk.h>
57#include <geom/geom_int.h>
58
59static struct mtx g_disk_done_mtx;
60
61static g_access_t g_disk_access;
62static g_init_t g_disk_init;
63static g_fini_t g_disk_fini;
64
65struct g_class g_disk_class = {
66 .name = "DISK",
67 .init = g_disk_init,
68 .fini = g_disk_fini,
69};
70
71static void
72g_disk_init(struct g_class *mp __unused)
73{
74
75 mtx_init(&g_disk_done_mtx, "g_disk_done", MTX_DEF, 0);
76}
77
78static void
79g_disk_fini(struct g_class *mp __unused)
80{
81
82 mtx_destroy(&g_disk_done_mtx);
83}
84
85DECLARE_GEOM_CLASS(g_disk_class, g_disk);
86
87static void __inline
88g_disk_lock_giant(struct disk *dp)
89{
90 if (dp->d_flags & DISKFLAG_NOGIANT)
91 return;
92 mtx_lock(&Giant);
93}
94
95static void __inline
96g_disk_unlock_giant(struct disk *dp)
97{
98 if (dp->d_flags & DISKFLAG_NOGIANT)
99 return;
100 mtx_unlock(&Giant);
101}
102
103static int
104g_disk_access(struct g_provider *pp, int r, int w, int e)
105{
106 struct disk *dp;
107 int error;
108
109 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
110 pp->name, r, w, e);
111 g_topology_assert();
112 r += pp->acr;
113 w += pp->acw;
114 e += pp->ace;
115 dp = pp->geom->softc;
116 if (dp == NULL)
117 return (ENXIO);
118 error = 0;
119 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
120 if (dp->d_open != NULL) {
121 g_disk_lock_giant(dp);
122 error = dp->d_open(dp);
123 if (error != 0)
124 printf("Opened disk %s -> %d\n",
125 pp->name, error);
126 g_disk_unlock_giant(dp);
127 }
128 pp->mediasize = dp->d_mediasize;
129 pp->sectorsize = dp->d_sectorsize;
130 dp->d_flags |= DISKFLAG_OPEN;
131 if (dp->d_maxsize == 0) {
132 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
133 dp->d_name, dp->d_unit);
134 dp->d_maxsize = DFLTPHYS;
135 }
136 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
137 if (dp->d_close != NULL) {
138 g_disk_lock_giant(dp);
139 error = dp->d_close(dp);
140 if (error != 0)
141 printf("Closed disk %s -> %d\n",
142 pp->name, error);
143 g_disk_unlock_giant(dp);
144 }
145 dp->d_flags &= ~DISKFLAG_OPEN;
146 }
147 return (error);
148}
149
150static void
151g_disk_kerneldump(struct bio *bp, struct disk *dp)
152{
153 int error;
154 struct g_kerneldump *gkd;
155 struct dumperinfo di;
156 struct g_geom *gp;
157
158 gkd = (struct g_kerneldump*)bp->bio_data;
159 gp = bp->bio_to->geom;
160 g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)",
161 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
162 di.dumper = dp->d_dump;
163 di.priv = dp;
164 di.blocksize = dp->d_sectorsize;
165 di.mediaoffset = gkd->offset;
166 di.mediasize = gkd->length;
167 error = set_dumper(&di);
168 g_io_deliver(bp, error);
169}
170
171static void
172g_disk_done(struct bio *bp)
173{
174 struct bio *bp2;
175 struct disk *dp;
176
177 /* See "notes" for why we need a mutex here */
178 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
179 mtx_lock(&g_disk_done_mtx);
180 bp->bio_completed = bp->bio_length - bp->bio_resid;
181
182 bp2 = bp->bio_parent;
183 dp = bp2->bio_to->geom->softc;
184 if (bp2->bio_error == 0)
185 bp2->bio_error = bp->bio_error;
186 bp2->bio_completed += bp->bio_completed;
187 g_destroy_bio(bp);
188 bp2->bio_inbed++;
189 if (bp2->bio_children == bp2->bio_inbed) {
190 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
191 devstat_end_transaction_bio(dp->d_devstat, bp2);
192 g_io_deliver(bp2, bp2->bio_error);
193 }
194 mtx_unlock(&g_disk_done_mtx);
195}
196
|
| 197static int
198g_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, struct thread *td)
199{
200 struct g_geom *gp;
201 struct disk *dp;
202 int error;
203
204 gp = pp->geom;
205 dp = gp->softc;
206
207 if (dp->d_ioctl == NULL)
208 return (ENOIOCTL);
209 g_disk_lock_giant(dp);
210 error = dp->d_ioctl(dp, cmd, data, 0, td);
211 g_disk_unlock_giant(dp);
212 return(error);
213}
214
|
197static void
198g_disk_start(struct bio *bp)
199{
200 struct bio *bp2, *bp3;
201 struct disk *dp;
| 215static void
216g_disk_start(struct bio *bp)
217{
218 struct bio *bp2, *bp3;
219 struct disk *dp;
|
202 struct g_ioctl *gio;
| |
203 int error;
204 off_t off;
205
206 dp = bp->bio_to->geom->softc;
207 if (dp == NULL)
208 g_io_deliver(bp, ENXIO);
209 error = EJUSTRETURN;
210 switch(bp->bio_cmd) {
211 case BIO_DELETE:
212 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
213 error = 0;
214 break;
215 }
216 /* fall-through */
217 case BIO_READ:
218 case BIO_WRITE:
219 off = 0;
220 bp3 = NULL;
221 bp2 = g_clone_bio(bp);
222 if (bp2 == NULL) {
223 error = ENOMEM;
224 break;
225 }
226 devstat_start_transaction_bio(dp->d_devstat, bp);
227 do {
228 bp2->bio_offset += off;
229 bp2->bio_length -= off;
230 bp2->bio_data += off;
231 if (bp2->bio_length > dp->d_maxsize) {
232 /*
233 * XXX: If we have a stripesize we should really
234 * use it here.
235 */
236 bp2->bio_length = dp->d_maxsize;
237 off += dp->d_maxsize;
238 /*
239 * To avoid a race, we need to grab the next bio
240 * before we schedule this one. See "notes".
241 */
242 bp3 = g_clone_bio(bp);
243 if (bp3 == NULL)
244 bp->bio_error = ENOMEM;
245 }
246 bp2->bio_done = g_disk_done;
247 bp2->bio_blkno = bp2->bio_offset >> DEV_BSHIFT;
248 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
249 bp2->bio_bcount = bp2->bio_length;
250 bp2->bio_disk = dp;
251 g_disk_lock_giant(dp);
252 dp->d_strategy(bp2);
253 g_disk_unlock_giant(dp);
254 bp2 = bp3;
255 bp3 = NULL;
256 } while (bp2 != NULL);
257 break;
258 case BIO_GETATTR:
259 if (g_handleattr_int(bp, "GEOM::fwsectors", dp->d_fwsectors))
260 break;
261 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
262 break;
263 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
264 break;
265 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
266 g_disk_kerneldump(bp, dp);
| 220 int error;
221 off_t off;
222
223 dp = bp->bio_to->geom->softc;
224 if (dp == NULL)
225 g_io_deliver(bp, ENXIO);
226 error = EJUSTRETURN;
227 switch(bp->bio_cmd) {
228 case BIO_DELETE:
229 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
230 error = 0;
231 break;
232 }
233 /* fall-through */
234 case BIO_READ:
235 case BIO_WRITE:
236 off = 0;
237 bp3 = NULL;
238 bp2 = g_clone_bio(bp);
239 if (bp2 == NULL) {
240 error = ENOMEM;
241 break;
242 }
243 devstat_start_transaction_bio(dp->d_devstat, bp);
244 do {
245 bp2->bio_offset += off;
246 bp2->bio_length -= off;
247 bp2->bio_data += off;
248 if (bp2->bio_length > dp->d_maxsize) {
249 /*
250 * XXX: If we have a stripesize we should really
251 * use it here.
252 */
253 bp2->bio_length = dp->d_maxsize;
254 off += dp->d_maxsize;
255 /*
256 * To avoid a race, we need to grab the next bio
257 * before we schedule this one. See "notes".
258 */
259 bp3 = g_clone_bio(bp);
260 if (bp3 == NULL)
261 bp->bio_error = ENOMEM;
262 }
263 bp2->bio_done = g_disk_done;
264 bp2->bio_blkno = bp2->bio_offset >> DEV_BSHIFT;
265 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
266 bp2->bio_bcount = bp2->bio_length;
267 bp2->bio_disk = dp;
268 g_disk_lock_giant(dp);
269 dp->d_strategy(bp2);
270 g_disk_unlock_giant(dp);
271 bp2 = bp3;
272 bp3 = NULL;
273 } while (bp2 != NULL);
274 break;
275 case BIO_GETATTR:
276 if (g_handleattr_int(bp, "GEOM::fwsectors", dp->d_fwsectors))
277 break;
278 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
279 break;
280 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
281 break;
282 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
283 g_disk_kerneldump(bp, dp);
|
267 else if ((g_debugflags & G_F_DISKIOCTL) &&
268 (dp->d_ioctl != NULL) &&
269 !strcmp(bp->bio_attribute, "GEOM::ioctl") &&
270 bp->bio_length == sizeof *gio) {
271 gio = (struct g_ioctl *)bp->bio_data;
272 gio->dev = dp;
273 gio->func = (d_ioctl_t *)(dp->d_ioctl);
274 error = EDIRIOCTL;
275 } else
| 284 else
|
276 error = ENOIOCTL;
277 break;
278 default:
279 error = EOPNOTSUPP;
280 break;
281 }
282 if (error != EJUSTRETURN)
283 g_io_deliver(bp, error);
284 return;
285}
286
287static void
288g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
289{
290 struct disk *dp;
291
292 dp = gp->softc;
293 if (indent == NULL) {
294 sbuf_printf(sb, " hd %u", dp->d_fwheads);
295 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
296 return;
297 }
298 if (pp != NULL) {
299 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
300 indent, dp->d_fwheads);
301 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
302 indent, dp->d_fwsectors);
303 }
304}
305
306static void
307g_disk_create(void *arg, int flag)
308{
309 struct g_geom *gp;
310 struct g_provider *pp;
311 struct disk *dp;
312
313 if (flag == EV_CANCEL)
314 return;
315 g_topology_assert();
316 dp = arg;
317 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
318 gp->start = g_disk_start;
319 gp->access = g_disk_access;
| 285 error = ENOIOCTL;
286 break;
287 default:
288 error = EOPNOTSUPP;
289 break;
290 }
291 if (error != EJUSTRETURN)
292 g_io_deliver(bp, error);
293 return;
294}
295
296static void
297g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
298{
299 struct disk *dp;
300
301 dp = gp->softc;
302 if (indent == NULL) {
303 sbuf_printf(sb, " hd %u", dp->d_fwheads);
304 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
305 return;
306 }
307 if (pp != NULL) {
308 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
309 indent, dp->d_fwheads);
310 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
311 indent, dp->d_fwsectors);
312 }
313}
314
315static void
316g_disk_create(void *arg, int flag)
317{
318 struct g_geom *gp;
319 struct g_provider *pp;
320 struct disk *dp;
321
322 if (flag == EV_CANCEL)
323 return;
324 g_topology_assert();
325 dp = arg;
326 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
327 gp->start = g_disk_start;
328 gp->access = g_disk_access;
|
| 329 gp->ioctl = g_disk_ioctl;
|
320 gp->softc = dp;
321 gp->dumpconf = g_disk_dumpconf;
322 pp = g_new_providerf(gp, "%s", gp->name);
323 pp->mediasize = dp->d_mediasize;
324 pp->sectorsize = dp->d_sectorsize;
325 if (dp->d_flags & DISKFLAG_CANDELETE)
326 pp->flags |= G_PF_CANDELETE;
327 pp->stripeoffset = dp->d_stripeoffset;
328 pp->stripesize = dp->d_stripesize;
329 if (bootverbose)
330 printf("GEOM: new disk %s\n", gp->name);
331 dp->d_geom = gp;
332 g_error_provider(pp, 0);
333}
334
335static void
336g_disk_destroy(void *ptr, int flag)
337{
338 struct g_geom *gp;
339
340 g_topology_assert();
341 gp = ptr;
342 gp->softc = NULL;
343 g_wither_geom(gp, ENXIO);
344}
345
346void
347disk_create(int unit, struct disk *dp, int flags, void *unused __unused, void * unused2 __unused)
348{
349
350 dp->d_unit = unit;
351 dp->d_flags = flags;
352 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
353 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
354 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
355 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
356 if (bootverbose || 1)
357 printf("GEOM: create disk %s%d dp=%p\n",
358 dp->d_name, dp->d_unit, dp);
359 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
360 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
361 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
362 dp->d_geom = NULL;
363 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
364}
365
366void
367disk_destroy(struct disk *dp)
368{
369 struct g_geom *gp;
370
371 if (bootverbose || 1)
372 printf("GEOM: destroy disk %s%d dp=%p\n",
373 dp->d_name, dp->d_unit, dp);
374 g_cancel_event(dp);
375 gp = dp->d_geom;
376 if (gp == NULL)
377 return;
378 gp->softc = NULL;
379 devstat_remove_entry(dp->d_devstat);
380 g_waitfor_event(g_disk_destroy, gp, M_WAITOK, NULL, NULL);
381 dp->d_geom = NULL;
382}
383
384static void
385g_kern_disks(void *p, int flag __unused)
386{
387 struct sbuf *sb;
388 struct g_geom *gp;
389 char *sp;
390
391 sb = p;
392 sp = "";
393 g_topology_assert();
394 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
395 sbuf_printf(sb, "%s%s", sp, gp->name);
396 sp = " ";
397 }
398 sbuf_finish(sb);
399}
400
401static int
402sysctl_disks(SYSCTL_HANDLER_ARGS)
403{
404 int error;
405 struct sbuf *sb;
406
407 sb = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
408 sbuf_clear(sb);
409 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
410 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
411 sbuf_delete(sb);
412 return error;
413}
414
415SYSCTL_PROC(_kern, OID_AUTO, disks, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NOLOCK, 0, 0,
416 sysctl_disks, "A", "names of available disks");
417
| 330 gp->softc = dp;
331 gp->dumpconf = g_disk_dumpconf;
332 pp = g_new_providerf(gp, "%s", gp->name);
333 pp->mediasize = dp->d_mediasize;
334 pp->sectorsize = dp->d_sectorsize;
335 if (dp->d_flags & DISKFLAG_CANDELETE)
336 pp->flags |= G_PF_CANDELETE;
337 pp->stripeoffset = dp->d_stripeoffset;
338 pp->stripesize = dp->d_stripesize;
339 if (bootverbose)
340 printf("GEOM: new disk %s\n", gp->name);
341 dp->d_geom = gp;
342 g_error_provider(pp, 0);
343}
344
345static void
346g_disk_destroy(void *ptr, int flag)
347{
348 struct g_geom *gp;
349
350 g_topology_assert();
351 gp = ptr;
352 gp->softc = NULL;
353 g_wither_geom(gp, ENXIO);
354}
355
356void
357disk_create(int unit, struct disk *dp, int flags, void *unused __unused, void * unused2 __unused)
358{
359
360 dp->d_unit = unit;
361 dp->d_flags = flags;
362 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
363 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
364 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
365 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
366 if (bootverbose || 1)
367 printf("GEOM: create disk %s%d dp=%p\n",
368 dp->d_name, dp->d_unit, dp);
369 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
370 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
371 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
372 dp->d_geom = NULL;
373 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
374}
375
376void
377disk_destroy(struct disk *dp)
378{
379 struct g_geom *gp;
380
381 if (bootverbose || 1)
382 printf("GEOM: destroy disk %s%d dp=%p\n",
383 dp->d_name, dp->d_unit, dp);
384 g_cancel_event(dp);
385 gp = dp->d_geom;
386 if (gp == NULL)
387 return;
388 gp->softc = NULL;
389 devstat_remove_entry(dp->d_devstat);
390 g_waitfor_event(g_disk_destroy, gp, M_WAITOK, NULL, NULL);
391 dp->d_geom = NULL;
392}
393
394static void
395g_kern_disks(void *p, int flag __unused)
396{
397 struct sbuf *sb;
398 struct g_geom *gp;
399 char *sp;
400
401 sb = p;
402 sp = "";
403 g_topology_assert();
404 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
405 sbuf_printf(sb, "%s%s", sp, gp->name);
406 sp = " ";
407 }
408 sbuf_finish(sb);
409}
410
411static int
412sysctl_disks(SYSCTL_HANDLER_ARGS)
413{
414 int error;
415 struct sbuf *sb;
416
417 sb = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
418 sbuf_clear(sb);
419 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
420 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
421 sbuf_delete(sb);
422 return error;
423}
424
425SYSCTL_PROC(_kern, OID_AUTO, disks, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NOLOCK, 0, 0,
426 sysctl_disks, "A", "names of available disks");
427
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