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 219950 2011-03-24 08:37:48Z mav $");
| 37__FBSDID("$FreeBSD: head/sys/geom/geom_disk.c 219970 2011-03-24 19:23:42Z mav $");
|
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/ctype.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
| 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/ctype.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
|
| 59#include <dev/led/led.h>
60
61struct g_disk_softc {
62 struct disk *dp;
63 struct sysctl_ctx_list sysctl_ctx;
64 struct sysctl_oid *sysctl_tree;
65 char led[64];
66 uint32_t state;
67};
68
|
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;
64static g_start_t g_disk_start;
65static g_ioctl_t g_disk_ioctl;
66static g_dumpconf_t g_disk_dumpconf;
67
68static struct g_class g_disk_class = {
69 .name = "DISK",
70 .version = G_VERSION,
71 .init = g_disk_init,
72 .fini = g_disk_fini,
73 .start = g_disk_start,
74 .access = g_disk_access,
75 .ioctl = g_disk_ioctl,
76 .dumpconf = g_disk_dumpconf,
77};
78
| 69static struct mtx g_disk_done_mtx;
70
71static g_access_t g_disk_access;
72static g_init_t g_disk_init;
73static g_fini_t g_disk_fini;
74static g_start_t g_disk_start;
75static g_ioctl_t g_disk_ioctl;
76static g_dumpconf_t g_disk_dumpconf;
77
78static struct g_class g_disk_class = {
79 .name = "DISK",
80 .version = G_VERSION,
81 .init = g_disk_init,
82 .fini = g_disk_fini,
83 .start = g_disk_start,
84 .access = g_disk_access,
85 .ioctl = g_disk_ioctl,
86 .dumpconf = g_disk_dumpconf,
87};
88
|
| 89SYSCTL_DECL(_kern_geom);
90SYSCTL_NODE(_kern_geom, OID_AUTO, disk, CTLFLAG_RW, 0, "GEOM_DISK stuff");
91
|
79static void
80g_disk_init(struct g_class *mp __unused)
81{
82
83 mtx_init(&g_disk_done_mtx, "g_disk_done", NULL, MTX_DEF);
84}
85
86static void
87g_disk_fini(struct g_class *mp __unused)
88{
89
90 mtx_destroy(&g_disk_done_mtx);
91}
92
93DECLARE_GEOM_CLASS(g_disk_class, g_disk);
94
95static void __inline
96g_disk_lock_giant(struct disk *dp)
97{
98 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
99 mtx_lock(&Giant);
100}
101
102static void __inline
103g_disk_unlock_giant(struct disk *dp)
104{
105 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
106 mtx_unlock(&Giant);
107}
108
109static int
110g_disk_access(struct g_provider *pp, int r, int w, int e)
111{
112 struct disk *dp;
| 92static void
93g_disk_init(struct g_class *mp __unused)
94{
95
96 mtx_init(&g_disk_done_mtx, "g_disk_done", NULL, MTX_DEF);
97}
98
99static void
100g_disk_fini(struct g_class *mp __unused)
101{
102
103 mtx_destroy(&g_disk_done_mtx);
104}
105
106DECLARE_GEOM_CLASS(g_disk_class, g_disk);
107
108static void __inline
109g_disk_lock_giant(struct disk *dp)
110{
111 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
112 mtx_lock(&Giant);
113}
114
115static void __inline
116g_disk_unlock_giant(struct disk *dp)
117{
118 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
119 mtx_unlock(&Giant);
120}
121
122static int
123g_disk_access(struct g_provider *pp, int r, int w, int e)
124{
125 struct disk *dp;
|
| 126 struct g_disk_softc *sc;
|
113 int error;
114
115 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
116 pp->name, r, w, e);
117 g_topology_assert();
| 127 int error;
128
129 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
130 pp->name, r, w, e);
131 g_topology_assert();
|
118 dp = pp->geom->softc;
119 if (dp == NULL || dp->d_destroyed) {
| 132 sc = pp->geom->softc;
133 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
|
120 /*
121 * Allow decreasing access count even if disk is not
122 * avaliable anymore.
123 */
124 if (r <= 0 && w <= 0 && e <= 0)
125 return (0);
126 return (ENXIO);
127 }
128 r += pp->acr;
129 w += pp->acw;
130 e += pp->ace;
131 error = 0;
132 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
133 if (dp->d_open != NULL) {
134 g_disk_lock_giant(dp);
135 error = dp->d_open(dp);
136 if (bootverbose && error != 0)
137 printf("Opened disk %s -> %d\n",
138 pp->name, error);
139 g_disk_unlock_giant(dp);
140 }
141 pp->mediasize = dp->d_mediasize;
142 pp->sectorsize = dp->d_sectorsize;
143 dp->d_flags |= DISKFLAG_OPEN;
144 if (dp->d_maxsize == 0) {
145 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
146 dp->d_name, dp->d_unit);
147 dp->d_maxsize = DFLTPHYS;
148 }
149 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
150 if (dp->d_close != NULL) {
151 g_disk_lock_giant(dp);
152 error = dp->d_close(dp);
153 if (error != 0)
154 printf("Closed disk %s -> %d\n",
155 pp->name, error);
156 g_disk_unlock_giant(dp);
157 }
| 134 /*
135 * Allow decreasing access count even if disk is not
136 * avaliable anymore.
137 */
138 if (r <= 0 && w <= 0 && e <= 0)
139 return (0);
140 return (ENXIO);
141 }
142 r += pp->acr;
143 w += pp->acw;
144 e += pp->ace;
145 error = 0;
146 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
147 if (dp->d_open != NULL) {
148 g_disk_lock_giant(dp);
149 error = dp->d_open(dp);
150 if (bootverbose && error != 0)
151 printf("Opened disk %s -> %d\n",
152 pp->name, error);
153 g_disk_unlock_giant(dp);
154 }
155 pp->mediasize = dp->d_mediasize;
156 pp->sectorsize = dp->d_sectorsize;
157 dp->d_flags |= DISKFLAG_OPEN;
158 if (dp->d_maxsize == 0) {
159 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
160 dp->d_name, dp->d_unit);
161 dp->d_maxsize = DFLTPHYS;
162 }
163 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
164 if (dp->d_close != NULL) {
165 g_disk_lock_giant(dp);
166 error = dp->d_close(dp);
167 if (error != 0)
168 printf("Closed disk %s -> %d\n",
169 pp->name, error);
170 g_disk_unlock_giant(dp);
171 }
|
| 172 sc->state = G_STATE_ACTIVE;
173 if (sc->led[0] != 0)
174 led_set(sc->led, "0");
|
158 dp->d_flags &= ~DISKFLAG_OPEN;
159 }
160 return (error);
161}
162
163static void
164g_disk_kerneldump(struct bio *bp, struct disk *dp)
165{
166 struct g_kerneldump *gkd;
167 struct g_geom *gp;
168
169 gkd = (struct g_kerneldump*)bp->bio_data;
170 gp = bp->bio_to->geom;
171 g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)",
172 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
173 if (dp->d_dump == NULL) {
174 g_io_deliver(bp, ENODEV);
175 return;
176 }
177 gkd->di.dumper = dp->d_dump;
178 gkd->di.priv = dp;
179 gkd->di.blocksize = dp->d_sectorsize;
180 gkd->di.maxiosize = dp->d_maxsize;
181 gkd->di.mediaoffset = gkd->offset;
182 if ((gkd->offset + gkd->length) > dp->d_mediasize)
183 gkd->length = dp->d_mediasize - gkd->offset;
184 gkd->di.mediasize = gkd->length;
185 g_io_deliver(bp, 0);
186}
187
188static void
| 175 dp->d_flags &= ~DISKFLAG_OPEN;
176 }
177 return (error);
178}
179
180static void
181g_disk_kerneldump(struct bio *bp, struct disk *dp)
182{
183 struct g_kerneldump *gkd;
184 struct g_geom *gp;
185
186 gkd = (struct g_kerneldump*)bp->bio_data;
187 gp = bp->bio_to->geom;
188 g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)",
189 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
190 if (dp->d_dump == NULL) {
191 g_io_deliver(bp, ENODEV);
192 return;
193 }
194 gkd->di.dumper = dp->d_dump;
195 gkd->di.priv = dp;
196 gkd->di.blocksize = dp->d_sectorsize;
197 gkd->di.maxiosize = dp->d_maxsize;
198 gkd->di.mediaoffset = gkd->offset;
199 if ((gkd->offset + gkd->length) > dp->d_mediasize)
200 gkd->length = dp->d_mediasize - gkd->offset;
201 gkd->di.mediasize = gkd->length;
202 g_io_deliver(bp, 0);
203}
204
205static void
|
| 206g_disk_setstate(struct bio *bp, struct g_disk_softc *sc)
207{
208 const char *cmd;
209
210 memcpy(&sc->state, bp->bio_data, sizeof(sc->state));
211 if (sc->led[0] != 0) {
212 switch (sc->state) {
213 case G_STATE_FAILED:
214 cmd = "1";
215 break;
216 case G_STATE_REBUILD:
217 cmd = "f5";
218 break;
219 case G_STATE_RESYNC:
220 cmd = "f1";
221 break;
222 default:
223 cmd = "0";
224 break;
225 }
226 led_set(sc->led, cmd);
227 }
228 g_io_deliver(bp, 0);
229}
230
231static void
|
189g_disk_done(struct bio *bp)
190{
191 struct bio *bp2;
192 struct disk *dp;
| 232g_disk_done(struct bio *bp)
233{
234 struct bio *bp2;
235 struct disk *dp;
|
| 236 struct g_disk_softc *sc;
|
193
194 /* See "notes" for why we need a mutex here */
195 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
196 mtx_lock(&g_disk_done_mtx);
197 bp->bio_completed = bp->bio_length - bp->bio_resid;
198
199 bp2 = bp->bio_parent;
200 if (bp2->bio_error == 0)
201 bp2->bio_error = bp->bio_error;
202 bp2->bio_completed += bp->bio_completed;
203 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE)) &&
| 237
238 /* See "notes" for why we need a mutex here */
239 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
240 mtx_lock(&g_disk_done_mtx);
241 bp->bio_completed = bp->bio_length - bp->bio_resid;
242
243 bp2 = bp->bio_parent;
244 if (bp2->bio_error == 0)
245 bp2->bio_error = bp->bio_error;
246 bp2->bio_completed += bp->bio_completed;
247 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE)) &&
|
204 (dp = bp2->bio_to->geom->softc)) {
| 248 (sc = bp2->bio_to->geom->softc) &&
249 (dp = sc->dp)) {
|
205 devstat_end_transaction_bio(dp->d_devstat, bp);
206 }
207 g_destroy_bio(bp);
208 bp2->bio_inbed++;
209 if (bp2->bio_children == bp2->bio_inbed) {
210 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
211 g_io_deliver(bp2, bp2->bio_error);
212 }
213 mtx_unlock(&g_disk_done_mtx);
214}
215
216static int
217g_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td)
218{
219 struct g_geom *gp;
220 struct disk *dp;
| 250 devstat_end_transaction_bio(dp->d_devstat, bp);
251 }
252 g_destroy_bio(bp);
253 bp2->bio_inbed++;
254 if (bp2->bio_children == bp2->bio_inbed) {
255 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
256 g_io_deliver(bp2, bp2->bio_error);
257 }
258 mtx_unlock(&g_disk_done_mtx);
259}
260
261static int
262g_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td)
263{
264 struct g_geom *gp;
265 struct disk *dp;
|
| 266 struct g_disk_softc *sc;
|
221 int error;
222
223 gp = pp->geom;
| 267 int error;
268
269 gp = pp->geom;
|
224 dp = gp->softc;
| 270 sc = gp->softc;
271 dp = sc->dp;
|
225
226 if (dp->d_ioctl == NULL)
227 return (ENOIOCTL);
228 g_disk_lock_giant(dp);
229 error = dp->d_ioctl(dp, cmd, data, fflag, td);
230 g_disk_unlock_giant(dp);
231 return(error);
232}
233
234static void
235g_disk_start(struct bio *bp)
236{
237 struct bio *bp2, *bp3;
238 struct disk *dp;
| 272
273 if (dp->d_ioctl == NULL)
274 return (ENOIOCTL);
275 g_disk_lock_giant(dp);
276 error = dp->d_ioctl(dp, cmd, data, fflag, td);
277 g_disk_unlock_giant(dp);
278 return(error);
279}
280
281static void
282g_disk_start(struct bio *bp)
283{
284 struct bio *bp2, *bp3;
285 struct disk *dp;
|
| 286 struct g_disk_softc *sc;
|
239 int error;
240 off_t off;
241
| 287 int error;
288 off_t off;
289
|
242 dp = bp->bio_to->geom->softc;
243 if (dp == NULL || dp->d_destroyed) {
| 290 sc = bp->bio_to->geom->softc;
291 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
|
244 g_io_deliver(bp, ENXIO);
245 return;
246 }
247 error = EJUSTRETURN;
248 switch(bp->bio_cmd) {
249 case BIO_DELETE:
250 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
251 error = 0;
252 break;
253 }
254 /* fall-through */
255 case BIO_READ:
256 case BIO_WRITE:
257 off = 0;
258 bp3 = NULL;
259 bp2 = g_clone_bio(bp);
260 if (bp2 == NULL) {
261 error = ENOMEM;
262 break;
263 }
264 do {
265 bp2->bio_offset += off;
266 bp2->bio_length -= off;
267 bp2->bio_data += off;
268 if (bp2->bio_length > dp->d_maxsize) {
269 /*
270 * XXX: If we have a stripesize we should really
271 * use it here.
272 */
273 bp2->bio_length = dp->d_maxsize;
274 off += dp->d_maxsize;
275 /*
276 * To avoid a race, we need to grab the next bio
277 * before we schedule this one. See "notes".
278 */
279 bp3 = g_clone_bio(bp);
280 if (bp3 == NULL)
281 bp->bio_error = ENOMEM;
282 }
283 bp2->bio_done = g_disk_done;
284 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
285 bp2->bio_bcount = bp2->bio_length;
286 bp2->bio_disk = dp;
287 devstat_start_transaction_bio(dp->d_devstat, bp2);
288 g_disk_lock_giant(dp);
289 dp->d_strategy(bp2);
290 g_disk_unlock_giant(dp);
291 bp2 = bp3;
292 bp3 = NULL;
293 } while (bp2 != NULL);
294 break;
295 case BIO_GETATTR:
296 if (g_handleattr_int(bp, "GEOM::candelete",
297 (dp->d_flags & DISKFLAG_CANDELETE) != 0))
298 break;
299 else if (g_handleattr_int(bp, "GEOM::fwsectors",
300 dp->d_fwsectors))
301 break;
302 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
303 break;
304 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
305 break;
306 else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident))
307 break;
308 else if (g_handleattr(bp, "GEOM::hba_vendor",
309 &dp->d_hba_vendor, 2))
310 break;
311 else if (g_handleattr(bp, "GEOM::hba_device",
312 &dp->d_hba_device, 2))
313 break;
314 else if (g_handleattr(bp, "GEOM::hba_subvendor",
315 &dp->d_hba_subvendor, 2))
316 break;
317 else if (g_handleattr(bp, "GEOM::hba_subdevice",
318 &dp->d_hba_subdevice, 2))
319 break;
320 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
321 g_disk_kerneldump(bp, dp);
| 292 g_io_deliver(bp, ENXIO);
293 return;
294 }
295 error = EJUSTRETURN;
296 switch(bp->bio_cmd) {
297 case BIO_DELETE:
298 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
299 error = 0;
300 break;
301 }
302 /* fall-through */
303 case BIO_READ:
304 case BIO_WRITE:
305 off = 0;
306 bp3 = NULL;
307 bp2 = g_clone_bio(bp);
308 if (bp2 == NULL) {
309 error = ENOMEM;
310 break;
311 }
312 do {
313 bp2->bio_offset += off;
314 bp2->bio_length -= off;
315 bp2->bio_data += off;
316 if (bp2->bio_length > dp->d_maxsize) {
317 /*
318 * XXX: If we have a stripesize we should really
319 * use it here.
320 */
321 bp2->bio_length = dp->d_maxsize;
322 off += dp->d_maxsize;
323 /*
324 * To avoid a race, we need to grab the next bio
325 * before we schedule this one. See "notes".
326 */
327 bp3 = g_clone_bio(bp);
328 if (bp3 == NULL)
329 bp->bio_error = ENOMEM;
330 }
331 bp2->bio_done = g_disk_done;
332 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
333 bp2->bio_bcount = bp2->bio_length;
334 bp2->bio_disk = dp;
335 devstat_start_transaction_bio(dp->d_devstat, bp2);
336 g_disk_lock_giant(dp);
337 dp->d_strategy(bp2);
338 g_disk_unlock_giant(dp);
339 bp2 = bp3;
340 bp3 = NULL;
341 } while (bp2 != NULL);
342 break;
343 case BIO_GETATTR:
344 if (g_handleattr_int(bp, "GEOM::candelete",
345 (dp->d_flags & DISKFLAG_CANDELETE) != 0))
346 break;
347 else if (g_handleattr_int(bp, "GEOM::fwsectors",
348 dp->d_fwsectors))
349 break;
350 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
351 break;
352 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
353 break;
354 else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident))
355 break;
356 else if (g_handleattr(bp, "GEOM::hba_vendor",
357 &dp->d_hba_vendor, 2))
358 break;
359 else if (g_handleattr(bp, "GEOM::hba_device",
360 &dp->d_hba_device, 2))
361 break;
362 else if (g_handleattr(bp, "GEOM::hba_subvendor",
363 &dp->d_hba_subvendor, 2))
364 break;
365 else if (g_handleattr(bp, "GEOM::hba_subdevice",
366 &dp->d_hba_subdevice, 2))
367 break;
368 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
369 g_disk_kerneldump(bp, dp);
|
| 370 else if (!strcmp(bp->bio_attribute, "GEOM::setstate"))
371 g_disk_setstate(bp, sc);
|
322 else
323 error = ENOIOCTL;
324 break;
325 case BIO_FLUSH:
326 g_trace(G_T_TOPOLOGY, "g_disk_flushcache(%s)",
327 bp->bio_to->name);
328 if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) {
329 g_io_deliver(bp, ENODEV);
330 return;
331 }
332 bp2 = g_clone_bio(bp);
333 if (bp2 == NULL) {
334 g_io_deliver(bp, ENOMEM);
335 return;
336 }
337 bp2->bio_done = g_disk_done;
338 bp2->bio_disk = dp;
339 g_disk_lock_giant(dp);
340 dp->d_strategy(bp2);
341 g_disk_unlock_giant(dp);
342 break;
343 default:
344 error = EOPNOTSUPP;
345 break;
346 }
347 if (error != EJUSTRETURN)
348 g_io_deliver(bp, error);
349 return;
350}
351
352static void
353g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
354{
355 struct disk *dp;
| 372 else
373 error = ENOIOCTL;
374 break;
375 case BIO_FLUSH:
376 g_trace(G_T_TOPOLOGY, "g_disk_flushcache(%s)",
377 bp->bio_to->name);
378 if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) {
379 g_io_deliver(bp, ENODEV);
380 return;
381 }
382 bp2 = g_clone_bio(bp);
383 if (bp2 == NULL) {
384 g_io_deliver(bp, ENOMEM);
385 return;
386 }
387 bp2->bio_done = g_disk_done;
388 bp2->bio_disk = dp;
389 g_disk_lock_giant(dp);
390 dp->d_strategy(bp2);
391 g_disk_unlock_giant(dp);
392 break;
393 default:
394 error = EOPNOTSUPP;
395 break;
396 }
397 if (error != EJUSTRETURN)
398 g_io_deliver(bp, error);
399 return;
400}
401
402static void
403g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
404{
405 struct disk *dp;
|
| 406 struct g_disk_softc *sc;
|
356
| 407
|
357 dp = gp->softc;
358 if (dp == NULL)
| 408 sc = gp->softc;
409 if (sc == NULL || (dp = sc->dp) == NULL)
|
359 return;
360 if (indent == NULL) {
361 sbuf_printf(sb, " hd %u", dp->d_fwheads);
362 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
363 return;
364 }
365 if (pp != NULL) {
366 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
367 indent, dp->d_fwheads);
368 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
369 indent, dp->d_fwsectors);
370 sbuf_printf(sb, "%s<ident>%s</ident>\n", indent, dp->d_ident);
371 sbuf_printf(sb, "%s<descr>%s</descr>\n", indent, dp->d_descr);
372 }
373}
374
375static void
376g_disk_create(void *arg, int flag)
377{
378 struct g_geom *gp;
379 struct g_provider *pp;
380 struct disk *dp;
| 410 return;
411 if (indent == NULL) {
412 sbuf_printf(sb, " hd %u", dp->d_fwheads);
413 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
414 return;
415 }
416 if (pp != NULL) {
417 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
418 indent, dp->d_fwheads);
419 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
420 indent, dp->d_fwsectors);
421 sbuf_printf(sb, "%s<ident>%s</ident>\n", indent, dp->d_ident);
422 sbuf_printf(sb, "%s<descr>%s</descr>\n", indent, dp->d_descr);
423 }
424}
425
426static void
427g_disk_create(void *arg, int flag)
428{
429 struct g_geom *gp;
430 struct g_provider *pp;
431 struct disk *dp;
|
| 432 struct g_disk_softc *sc;
433 char tmpstr[80];
|
381
382 if (flag == EV_CANCEL)
383 return;
384 g_topology_assert();
385 dp = arg;
| 434
435 if (flag == EV_CANCEL)
436 return;
437 g_topology_assert();
438 dp = arg;
|
| 439 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO);
440 sc->dp = dp;
|
386 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
| 441 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
|
387 gp->softc = dp;
| 442 gp->softc = sc;
|
388 pp = g_new_providerf(gp, "%s", gp->name);
389 pp->mediasize = dp->d_mediasize;
390 pp->sectorsize = dp->d_sectorsize;
391 if (dp->d_flags & DISKFLAG_CANDELETE)
392 pp->flags |= G_PF_CANDELETE;
393 pp->stripeoffset = dp->d_stripeoffset;
394 pp->stripesize = dp->d_stripesize;
395 if (bootverbose)
396 printf("GEOM: new disk %s\n", gp->name);
| 443 pp = g_new_providerf(gp, "%s", gp->name);
444 pp->mediasize = dp->d_mediasize;
445 pp->sectorsize = dp->d_sectorsize;
446 if (dp->d_flags & DISKFLAG_CANDELETE)
447 pp->flags |= G_PF_CANDELETE;
448 pp->stripeoffset = dp->d_stripeoffset;
449 pp->stripesize = dp->d_stripesize;
450 if (bootverbose)
451 printf("GEOM: new disk %s\n", gp->name);
|
| 452 sysctl_ctx_init(&sc->sysctl_ctx);
453 snprintf(tmpstr, sizeof(tmpstr), "GEOM disk %s", gp->name);
454 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
455 SYSCTL_STATIC_CHILDREN(_kern_geom_disk), OID_AUTO, gp->name,
456 CTLFLAG_RD, 0, tmpstr);
457 if (sc->sysctl_tree != NULL) {
458 snprintf(tmpstr, sizeof(tmpstr),
459 "kern.geom.disk.%s.led", gp->name);
460 TUNABLE_STR_FETCH(tmpstr, sc->led, sizeof(sc->led));
461 SYSCTL_ADD_STRING(&sc->sysctl_ctx,
462 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "led",
463 CTLFLAG_RW | CTLFLAG_TUN, sc->led, sizeof(sc->led),
464 "LED name");
465 }
466 pp->private = sc;
|
397 dp->d_geom = gp;
398 g_error_provider(pp, 0);
399}
400
401static void
402g_disk_destroy(void *ptr, int flag)
403{
404 struct disk *dp;
405 struct g_geom *gp;
| 467 dp->d_geom = gp;
468 g_error_provider(pp, 0);
469}
470
471static void
472g_disk_destroy(void *ptr, int flag)
473{
474 struct disk *dp;
475 struct g_geom *gp;
|
| 476 struct g_disk_softc *sc;
|
406
407 g_topology_assert();
408 dp = ptr;
409 gp = dp->d_geom;
410 if (gp != NULL) {
| 477
478 g_topology_assert();
479 dp = ptr;
480 gp = dp->d_geom;
481 if (gp != NULL) {
|
| 482 sc = gp->softc;
483 if (sc->sysctl_tree != NULL) {
484 sysctl_ctx_free(&sc->sysctl_ctx);
485 sc->sysctl_tree = NULL;
486 }
487 if (sc->led[0] != 0) {
488 led_set(sc->led, "0");
489 sc->led[0] = 0;
490 }
491 g_free(sc);
|
411 gp->softc = NULL;
412 g_wither_geom(gp, ENXIO);
413 }
414 g_free(dp);
415}
416
417/*
418 * We only allow printable characters in disk ident,
419 * the rest is converted to 'x<HH>'.
420 */
421static void
422g_disk_ident_adjust(char *ident, size_t size)
423{
424 char *p, tmp[4], newid[DISK_IDENT_SIZE];
425
426 newid[0] = '\0';
427 for (p = ident; *p != '\0'; p++) {
428 if (isprint(*p)) {
429 tmp[0] = *p;
430 tmp[1] = '\0';
431 } else {
432 snprintf(tmp, sizeof(tmp), "x%02hhx",
433 *(unsigned char *)p);
434 }
435 if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid))
436 break;
437 }
438 bzero(ident, size);
439 strlcpy(ident, newid, size);
440}
441
442struct disk *
443disk_alloc()
444{
445 struct disk *dp;
446
447 dp = g_malloc(sizeof *dp, M_WAITOK | M_ZERO);
448 return (dp);
449}
450
451void
452disk_create(struct disk *dp, int version)
453{
454 if (version != DISK_VERSION_00 && version != DISK_VERSION_01) {
455 printf("WARNING: Attempt to add disk %s%d %s",
456 dp->d_name, dp->d_unit,
457 " using incompatible ABI version of disk(9)\n");
458 printf("WARNING: Ignoring disk %s%d\n",
459 dp->d_name, dp->d_unit);
460 return;
461 }
462 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
463 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
464 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
465 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
466 if (dp->d_devstat == NULL)
467 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
468 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
469 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
470 dp->d_geom = NULL;
471 g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident));
472 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
473}
474
475void
476disk_destroy(struct disk *dp)
477{
478
479 g_cancel_event(dp);
480 dp->d_destroyed = 1;
481 if (dp->d_devstat != NULL)
482 devstat_remove_entry(dp->d_devstat);
483 g_post_event(g_disk_destroy, dp, M_WAITOK, NULL);
484}
485
486void
487disk_gone(struct disk *dp)
488{
489 struct g_geom *gp;
490 struct g_provider *pp;
491
492 gp = dp->d_geom;
493 if (gp != NULL)
494 LIST_FOREACH(pp, &gp->provider, provider)
495 g_wither_provider(pp, ENXIO);
496}
497
498static void
499g_kern_disks(void *p, int flag __unused)
500{
501 struct sbuf *sb;
502 struct g_geom *gp;
503 char *sp;
504
505 sb = p;
506 sp = "";
507 g_topology_assert();
508 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
509 sbuf_printf(sb, "%s%s", sp, gp->name);
510 sp = " ";
511 }
512 sbuf_finish(sb);
513}
514
515static int
516sysctl_disks(SYSCTL_HANDLER_ARGS)
517{
518 int error;
519 struct sbuf *sb;
520
521 sb = sbuf_new_auto();
522 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
523 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
524 sbuf_delete(sb);
525 return error;
526}
527
528SYSCTL_PROC(_kern, OID_AUTO, disks,
529 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
530 sysctl_disks, "A", "names of available disks");
531
| 492 gp->softc = NULL;
493 g_wither_geom(gp, ENXIO);
494 }
495 g_free(dp);
496}
497
498/*
499 * We only allow printable characters in disk ident,
500 * the rest is converted to 'x<HH>'.
501 */
502static void
503g_disk_ident_adjust(char *ident, size_t size)
504{
505 char *p, tmp[4], newid[DISK_IDENT_SIZE];
506
507 newid[0] = '\0';
508 for (p = ident; *p != '\0'; p++) {
509 if (isprint(*p)) {
510 tmp[0] = *p;
511 tmp[1] = '\0';
512 } else {
513 snprintf(tmp, sizeof(tmp), "x%02hhx",
514 *(unsigned char *)p);
515 }
516 if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid))
517 break;
518 }
519 bzero(ident, size);
520 strlcpy(ident, newid, size);
521}
522
523struct disk *
524disk_alloc()
525{
526 struct disk *dp;
527
528 dp = g_malloc(sizeof *dp, M_WAITOK | M_ZERO);
529 return (dp);
530}
531
532void
533disk_create(struct disk *dp, int version)
534{
535 if (version != DISK_VERSION_00 && version != DISK_VERSION_01) {
536 printf("WARNING: Attempt to add disk %s%d %s",
537 dp->d_name, dp->d_unit,
538 " using incompatible ABI version of disk(9)\n");
539 printf("WARNING: Ignoring disk %s%d\n",
540 dp->d_name, dp->d_unit);
541 return;
542 }
543 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
544 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
545 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
546 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
547 if (dp->d_devstat == NULL)
548 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
549 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
550 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
551 dp->d_geom = NULL;
552 g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident));
553 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
554}
555
556void
557disk_destroy(struct disk *dp)
558{
559
560 g_cancel_event(dp);
561 dp->d_destroyed = 1;
562 if (dp->d_devstat != NULL)
563 devstat_remove_entry(dp->d_devstat);
564 g_post_event(g_disk_destroy, dp, M_WAITOK, NULL);
565}
566
567void
568disk_gone(struct disk *dp)
569{
570 struct g_geom *gp;
571 struct g_provider *pp;
572
573 gp = dp->d_geom;
574 if (gp != NULL)
575 LIST_FOREACH(pp, &gp->provider, provider)
576 g_wither_provider(pp, ENXIO);
577}
578
579static void
580g_kern_disks(void *p, int flag __unused)
581{
582 struct sbuf *sb;
583 struct g_geom *gp;
584 char *sp;
585
586 sb = p;
587 sp = "";
588 g_topology_assert();
589 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
590 sbuf_printf(sb, "%s%s", sp, gp->name);
591 sp = " ";
592 }
593 sbuf_finish(sb);
594}
595
596static int
597sysctl_disks(SYSCTL_HANDLER_ARGS)
598{
599 int error;
600 struct sbuf *sb;
601
602 sb = sbuf_new_auto();
603 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
604 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
605 sbuf_delete(sb);
606 return error;
607}
608
609SYSCTL_PROC(_kern, OID_AUTO, disks,
610 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
611 sysctl_disks, "A", "names of available disks");
612
|