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 226735 2011-10-25 14:04:59Z pjd $");
| 37__FBSDID("$FreeBSD: head/sys/geom/geom_disk.c 226736 2011-10-25 14:05:39Z pjd $");
|
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/sbuf.h>
50#include <sys/sysctl.h>
51#include <sys/devicestat.h>
52#include <machine/md_var.h>
53
54#include <sys/lock.h>
55#include <sys/mutex.h>
56#include <geom/geom.h>
57#include <geom/geom_disk.h>
58#include <geom/geom_int.h>
59
60#include <dev/led/led.h>
61
62struct g_disk_softc {
63 struct disk *dp;
64 struct sysctl_ctx_list sysctl_ctx;
65 struct sysctl_oid *sysctl_tree;
66 char led[64];
67 uint32_t state;
68};
69
70static struct mtx g_disk_done_mtx;
71
72static g_access_t g_disk_access;
73static g_init_t g_disk_init;
74static g_fini_t g_disk_fini;
75static g_start_t g_disk_start;
76static g_ioctl_t g_disk_ioctl;
77static g_dumpconf_t g_disk_dumpconf;
78
79static struct g_class g_disk_class = {
80 .name = "DISK",
81 .version = G_VERSION,
82 .init = g_disk_init,
83 .fini = g_disk_fini,
84 .start = g_disk_start,
85 .access = g_disk_access,
86 .ioctl = g_disk_ioctl,
87 .dumpconf = g_disk_dumpconf,
88};
89
90SYSCTL_DECL(_kern_geom);
91SYSCTL_NODE(_kern_geom, OID_AUTO, disk, CTLFLAG_RW, 0, "GEOM_DISK stuff");
92
93static void
94g_disk_init(struct g_class *mp __unused)
95{
96
97 mtx_init(&g_disk_done_mtx, "g_disk_done", NULL, MTX_DEF);
98}
99
100static void
101g_disk_fini(struct g_class *mp __unused)
102{
103
104 mtx_destroy(&g_disk_done_mtx);
105}
106
107DECLARE_GEOM_CLASS(g_disk_class, g_disk);
108
109static void __inline
110g_disk_lock_giant(struct disk *dp)
111{
| 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/sbuf.h>
50#include <sys/sysctl.h>
51#include <sys/devicestat.h>
52#include <machine/md_var.h>
53
54#include <sys/lock.h>
55#include <sys/mutex.h>
56#include <geom/geom.h>
57#include <geom/geom_disk.h>
58#include <geom/geom_int.h>
59
60#include <dev/led/led.h>
61
62struct g_disk_softc {
63 struct disk *dp;
64 struct sysctl_ctx_list sysctl_ctx;
65 struct sysctl_oid *sysctl_tree;
66 char led[64];
67 uint32_t state;
68};
69
70static struct mtx g_disk_done_mtx;
71
72static g_access_t g_disk_access;
73static g_init_t g_disk_init;
74static g_fini_t g_disk_fini;
75static g_start_t g_disk_start;
76static g_ioctl_t g_disk_ioctl;
77static g_dumpconf_t g_disk_dumpconf;
78
79static struct g_class g_disk_class = {
80 .name = "DISK",
81 .version = G_VERSION,
82 .init = g_disk_init,
83 .fini = g_disk_fini,
84 .start = g_disk_start,
85 .access = g_disk_access,
86 .ioctl = g_disk_ioctl,
87 .dumpconf = g_disk_dumpconf,
88};
89
90SYSCTL_DECL(_kern_geom);
91SYSCTL_NODE(_kern_geom, OID_AUTO, disk, CTLFLAG_RW, 0, "GEOM_DISK stuff");
92
93static void
94g_disk_init(struct g_class *mp __unused)
95{
96
97 mtx_init(&g_disk_done_mtx, "g_disk_done", NULL, MTX_DEF);
98}
99
100static void
101g_disk_fini(struct g_class *mp __unused)
102{
103
104 mtx_destroy(&g_disk_done_mtx);
105}
106
107DECLARE_GEOM_CLASS(g_disk_class, g_disk);
108
109static void __inline
110g_disk_lock_giant(struct disk *dp)
111{
|
| 112
|
112 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
113 mtx_lock(&Giant);
114}
115
116static void __inline
117g_disk_unlock_giant(struct disk *dp)
118{
| 113 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
114 mtx_lock(&Giant);
115}
116
117static void __inline
118g_disk_unlock_giant(struct disk *dp)
119{
|
| 120
|
119 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
120 mtx_unlock(&Giant);
121}
122
123static int
124g_disk_access(struct g_provider *pp, int r, int w, int e)
125{
126 struct disk *dp;
127 struct g_disk_softc *sc;
128 int error;
129
130 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
131 pp->name, r, w, e);
132 g_topology_assert();
133 sc = pp->geom->softc;
134 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
135 /*
136 * Allow decreasing access count even if disk is not
137 * avaliable anymore.
138 */
139 if (r <= 0 && w <= 0 && e <= 0)
140 return (0);
141 return (ENXIO);
142 }
143 r += pp->acr;
144 w += pp->acw;
145 e += pp->ace;
146 error = 0;
147 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
148 if (dp->d_open != NULL) {
149 g_disk_lock_giant(dp);
150 error = dp->d_open(dp);
151 if (bootverbose && error != 0)
152 printf("Opened disk %s -> %d\n",
153 pp->name, error);
154 g_disk_unlock_giant(dp);
155 }
156 pp->mediasize = dp->d_mediasize;
157 pp->sectorsize = dp->d_sectorsize;
158 if (dp->d_flags & DISKFLAG_CANDELETE)
159 pp->flags |= G_PF_CANDELETE;
160 else
161 pp->flags &= ~G_PF_CANDELETE;
162 pp->stripeoffset = dp->d_stripeoffset;
163 pp->stripesize = dp->d_stripesize;
164 dp->d_flags |= DISKFLAG_OPEN;
165 if (dp->d_maxsize == 0) {
166 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
167 dp->d_name, dp->d_unit);
168 dp->d_maxsize = DFLTPHYS;
169 }
170 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
171 if (dp->d_close != NULL) {
172 g_disk_lock_giant(dp);
173 error = dp->d_close(dp);
174 if (error != 0)
175 printf("Closed disk %s -> %d\n",
176 pp->name, error);
177 g_disk_unlock_giant(dp);
178 }
179 sc->state = G_STATE_ACTIVE;
180 if (sc->led[0] != 0)
181 led_set(sc->led, "0");
182 dp->d_flags &= ~DISKFLAG_OPEN;
183 }
184 return (error);
185}
186
187static void
188g_disk_kerneldump(struct bio *bp, struct disk *dp)
189{
190 struct g_kerneldump *gkd;
191 struct g_geom *gp;
192
193 gkd = (struct g_kerneldump*)bp->bio_data;
194 gp = bp->bio_to->geom;
195 g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)",
196 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
197 if (dp->d_dump == NULL) {
198 g_io_deliver(bp, ENODEV);
199 return;
200 }
201 gkd->di.dumper = dp->d_dump;
202 gkd->di.priv = dp;
203 gkd->di.blocksize = dp->d_sectorsize;
204 gkd->di.maxiosize = dp->d_maxsize;
205 gkd->di.mediaoffset = gkd->offset;
206 if ((gkd->offset + gkd->length) > dp->d_mediasize)
207 gkd->length = dp->d_mediasize - gkd->offset;
208 gkd->di.mediasize = gkd->length;
209 g_io_deliver(bp, 0);
210}
211
212static void
213g_disk_setstate(struct bio *bp, struct g_disk_softc *sc)
214{
215 const char *cmd;
216
217 memcpy(&sc->state, bp->bio_data, sizeof(sc->state));
218 if (sc->led[0] != 0) {
219 switch (sc->state) {
220 case G_STATE_FAILED:
221 cmd = "1";
222 break;
223 case G_STATE_REBUILD:
224 cmd = "f5";
225 break;
226 case G_STATE_RESYNC:
227 cmd = "f1";
228 break;
229 default:
230 cmd = "0";
231 break;
232 }
233 led_set(sc->led, cmd);
234 }
235 g_io_deliver(bp, 0);
236}
237
238static void
239g_disk_done(struct bio *bp)
240{
241 struct bio *bp2;
242 struct disk *dp;
243 struct g_disk_softc *sc;
244
245 /* See "notes" for why we need a mutex here */
246 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
247 mtx_lock(&g_disk_done_mtx);
248 bp->bio_completed = bp->bio_length - bp->bio_resid;
249
250 bp2 = bp->bio_parent;
251 if (bp2->bio_error == 0)
252 bp2->bio_error = bp->bio_error;
253 bp2->bio_completed += bp->bio_completed;
| 121 if (dp->d_flags & DISKFLAG_NEEDSGIANT)
122 mtx_unlock(&Giant);
123}
124
125static int
126g_disk_access(struct g_provider *pp, int r, int w, int e)
127{
128 struct disk *dp;
129 struct g_disk_softc *sc;
130 int error;
131
132 g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)",
133 pp->name, r, w, e);
134 g_topology_assert();
135 sc = pp->geom->softc;
136 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
137 /*
138 * Allow decreasing access count even if disk is not
139 * avaliable anymore.
140 */
141 if (r <= 0 && w <= 0 && e <= 0)
142 return (0);
143 return (ENXIO);
144 }
145 r += pp->acr;
146 w += pp->acw;
147 e += pp->ace;
148 error = 0;
149 if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) {
150 if (dp->d_open != NULL) {
151 g_disk_lock_giant(dp);
152 error = dp->d_open(dp);
153 if (bootverbose && error != 0)
154 printf("Opened disk %s -> %d\n",
155 pp->name, error);
156 g_disk_unlock_giant(dp);
157 }
158 pp->mediasize = dp->d_mediasize;
159 pp->sectorsize = dp->d_sectorsize;
160 if (dp->d_flags & DISKFLAG_CANDELETE)
161 pp->flags |= G_PF_CANDELETE;
162 else
163 pp->flags &= ~G_PF_CANDELETE;
164 pp->stripeoffset = dp->d_stripeoffset;
165 pp->stripesize = dp->d_stripesize;
166 dp->d_flags |= DISKFLAG_OPEN;
167 if (dp->d_maxsize == 0) {
168 printf("WARNING: Disk drive %s%d has no d_maxsize\n",
169 dp->d_name, dp->d_unit);
170 dp->d_maxsize = DFLTPHYS;
171 }
172 } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) {
173 if (dp->d_close != NULL) {
174 g_disk_lock_giant(dp);
175 error = dp->d_close(dp);
176 if (error != 0)
177 printf("Closed disk %s -> %d\n",
178 pp->name, error);
179 g_disk_unlock_giant(dp);
180 }
181 sc->state = G_STATE_ACTIVE;
182 if (sc->led[0] != 0)
183 led_set(sc->led, "0");
184 dp->d_flags &= ~DISKFLAG_OPEN;
185 }
186 return (error);
187}
188
189static void
190g_disk_kerneldump(struct bio *bp, struct disk *dp)
191{
192 struct g_kerneldump *gkd;
193 struct g_geom *gp;
194
195 gkd = (struct g_kerneldump*)bp->bio_data;
196 gp = bp->bio_to->geom;
197 g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)",
198 gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length);
199 if (dp->d_dump == NULL) {
200 g_io_deliver(bp, ENODEV);
201 return;
202 }
203 gkd->di.dumper = dp->d_dump;
204 gkd->di.priv = dp;
205 gkd->di.blocksize = dp->d_sectorsize;
206 gkd->di.maxiosize = dp->d_maxsize;
207 gkd->di.mediaoffset = gkd->offset;
208 if ((gkd->offset + gkd->length) > dp->d_mediasize)
209 gkd->length = dp->d_mediasize - gkd->offset;
210 gkd->di.mediasize = gkd->length;
211 g_io_deliver(bp, 0);
212}
213
214static void
215g_disk_setstate(struct bio *bp, struct g_disk_softc *sc)
216{
217 const char *cmd;
218
219 memcpy(&sc->state, bp->bio_data, sizeof(sc->state));
220 if (sc->led[0] != 0) {
221 switch (sc->state) {
222 case G_STATE_FAILED:
223 cmd = "1";
224 break;
225 case G_STATE_REBUILD:
226 cmd = "f5";
227 break;
228 case G_STATE_RESYNC:
229 cmd = "f1";
230 break;
231 default:
232 cmd = "0";
233 break;
234 }
235 led_set(sc->led, cmd);
236 }
237 g_io_deliver(bp, 0);
238}
239
240static void
241g_disk_done(struct bio *bp)
242{
243 struct bio *bp2;
244 struct disk *dp;
245 struct g_disk_softc *sc;
246
247 /* See "notes" for why we need a mutex here */
248 /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */
249 mtx_lock(&g_disk_done_mtx);
250 bp->bio_completed = bp->bio_length - bp->bio_resid;
251
252 bp2 = bp->bio_parent;
253 if (bp2->bio_error == 0)
254 bp2->bio_error = bp->bio_error;
255 bp2->bio_completed += bp->bio_completed;
|
254 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE)) &&
255 (sc = bp2->bio_to->geom->softc) &&
256 (dp = sc->dp)) {
| 256 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE)) != 0 &&
257 (sc = bp2->bio_to->geom->softc) != NULL &&
258 (dp = sc->dp) != NULL) {
|
257 devstat_end_transaction_bio(dp->d_devstat, bp);
258 }
259 g_destroy_bio(bp);
260 bp2->bio_inbed++;
261 if (bp2->bio_children == bp2->bio_inbed) {
262 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
263 g_io_deliver(bp2, bp2->bio_error);
264 }
265 mtx_unlock(&g_disk_done_mtx);
266}
267
268static int
269g_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td)
270{
271 struct g_geom *gp;
272 struct disk *dp;
273 struct g_disk_softc *sc;
274 int error;
275
276 gp = pp->geom;
277 sc = gp->softc;
278 dp = sc->dp;
279
280 if (dp->d_ioctl == NULL)
281 return (ENOIOCTL);
282 g_disk_lock_giant(dp);
283 error = dp->d_ioctl(dp, cmd, data, fflag, td);
284 g_disk_unlock_giant(dp);
| 259 devstat_end_transaction_bio(dp->d_devstat, bp);
260 }
261 g_destroy_bio(bp);
262 bp2->bio_inbed++;
263 if (bp2->bio_children == bp2->bio_inbed) {
264 bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed;
265 g_io_deliver(bp2, bp2->bio_error);
266 }
267 mtx_unlock(&g_disk_done_mtx);
268}
269
270static int
271g_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td)
272{
273 struct g_geom *gp;
274 struct disk *dp;
275 struct g_disk_softc *sc;
276 int error;
277
278 gp = pp->geom;
279 sc = gp->softc;
280 dp = sc->dp;
281
282 if (dp->d_ioctl == NULL)
283 return (ENOIOCTL);
284 g_disk_lock_giant(dp);
285 error = dp->d_ioctl(dp, cmd, data, fflag, td);
286 g_disk_unlock_giant(dp);
|
285 return(error);
| 287 return (error);
|
286}
287
288static void
289g_disk_start(struct bio *bp)
290{
291 struct bio *bp2, *bp3;
292 struct disk *dp;
293 struct g_disk_softc *sc;
294 int error;
295 off_t off;
296
297 sc = bp->bio_to->geom->softc;
298 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
299 g_io_deliver(bp, ENXIO);
300 return;
301 }
302 error = EJUSTRETURN;
303 switch(bp->bio_cmd) {
304 case BIO_DELETE:
305 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
306 error = 0;
307 break;
308 }
309 /* fall-through */
310 case BIO_READ:
311 case BIO_WRITE:
312 off = 0;
313 bp3 = NULL;
314 bp2 = g_clone_bio(bp);
315 if (bp2 == NULL) {
316 error = ENOMEM;
317 break;
318 }
319 do {
320 bp2->bio_offset += off;
321 bp2->bio_length -= off;
322 bp2->bio_data += off;
323 if (bp2->bio_length > dp->d_maxsize) {
324 /*
325 * XXX: If we have a stripesize we should really
326 * use it here.
327 */
328 bp2->bio_length = dp->d_maxsize;
329 off += dp->d_maxsize;
330 /*
331 * To avoid a race, we need to grab the next bio
332 * before we schedule this one. See "notes".
333 */
334 bp3 = g_clone_bio(bp);
335 if (bp3 == NULL)
336 bp->bio_error = ENOMEM;
337 }
338 bp2->bio_done = g_disk_done;
339 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
340 bp2->bio_bcount = bp2->bio_length;
341 bp2->bio_disk = dp;
342 devstat_start_transaction_bio(dp->d_devstat, bp2);
343 g_disk_lock_giant(dp);
344 dp->d_strategy(bp2);
345 g_disk_unlock_giant(dp);
346 bp2 = bp3;
347 bp3 = NULL;
348 } while (bp2 != NULL);
349 break;
350 case BIO_GETATTR:
351 /* Give the driver a chance to override */
352 if (dp->d_getattr != NULL) {
353 if (bp->bio_disk == NULL)
354 bp->bio_disk = dp;
355 error = dp->d_getattr(bp);
356 if (error != -1)
357 break;
358 error = EJUSTRETURN;
359 }
360 if (g_handleattr_int(bp, "GEOM::candelete",
361 (dp->d_flags & DISKFLAG_CANDELETE) != 0))
362 break;
363 else if (g_handleattr_int(bp, "GEOM::fwsectors",
364 dp->d_fwsectors))
365 break;
366 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
367 break;
368 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
369 break;
370 else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident))
371 break;
372 else if (g_handleattr(bp, "GEOM::hba_vendor",
373 &dp->d_hba_vendor, 2))
374 break;
375 else if (g_handleattr(bp, "GEOM::hba_device",
376 &dp->d_hba_device, 2))
377 break;
378 else if (g_handleattr(bp, "GEOM::hba_subvendor",
379 &dp->d_hba_subvendor, 2))
380 break;
381 else if (g_handleattr(bp, "GEOM::hba_subdevice",
382 &dp->d_hba_subdevice, 2))
383 break;
384 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
385 g_disk_kerneldump(bp, dp);
386 else if (!strcmp(bp->bio_attribute, "GEOM::setstate"))
387 g_disk_setstate(bp, sc);
388 else
389 error = ENOIOCTL;
390 break;
391 case BIO_FLUSH:
392 g_trace(G_T_TOPOLOGY, "g_disk_flushcache(%s)",
393 bp->bio_to->name);
394 if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) {
395 g_io_deliver(bp, ENODEV);
396 return;
397 }
398 bp2 = g_clone_bio(bp);
399 if (bp2 == NULL) {
400 g_io_deliver(bp, ENOMEM);
401 return;
402 }
403 bp2->bio_done = g_disk_done;
404 bp2->bio_disk = dp;
405 g_disk_lock_giant(dp);
406 dp->d_strategy(bp2);
407 g_disk_unlock_giant(dp);
408 break;
409 default:
410 error = EOPNOTSUPP;
411 break;
412 }
413 if (error != EJUSTRETURN)
414 g_io_deliver(bp, error);
415 return;
416}
417
418static void
419g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
420{
421 struct disk *dp;
422 struct g_disk_softc *sc;
423
424 sc = gp->softc;
425 if (sc == NULL || (dp = sc->dp) == NULL)
426 return;
427 if (indent == NULL) {
428 sbuf_printf(sb, " hd %u", dp->d_fwheads);
429 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
430 return;
431 }
432 if (pp != NULL) {
433 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
434 indent, dp->d_fwheads);
435 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
436 indent, dp->d_fwsectors);
437 sbuf_printf(sb, "%s<ident>%s</ident>\n", indent, dp->d_ident);
438 sbuf_printf(sb, "%s<descr>%s</descr>\n", indent, dp->d_descr);
439 }
440}
441
442static void
443g_disk_create(void *arg, int flag)
444{
445 struct g_geom *gp;
446 struct g_provider *pp;
447 struct disk *dp;
448 struct g_disk_softc *sc;
449 char tmpstr[80];
450
451 if (flag == EV_CANCEL)
452 return;
453 g_topology_assert();
454 dp = arg;
455 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO);
456 sc->dp = dp;
457 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
458 gp->softc = sc;
459 pp = g_new_providerf(gp, "%s", gp->name);
460 pp->mediasize = dp->d_mediasize;
461 pp->sectorsize = dp->d_sectorsize;
462 if (dp->d_flags & DISKFLAG_CANDELETE)
463 pp->flags |= G_PF_CANDELETE;
464 pp->stripeoffset = dp->d_stripeoffset;
465 pp->stripesize = dp->d_stripesize;
466 if (bootverbose)
467 printf("GEOM: new disk %s\n", gp->name);
468 sysctl_ctx_init(&sc->sysctl_ctx);
469 snprintf(tmpstr, sizeof(tmpstr), "GEOM disk %s", gp->name);
470 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
471 SYSCTL_STATIC_CHILDREN(_kern_geom_disk), OID_AUTO, gp->name,
472 CTLFLAG_RD, 0, tmpstr);
473 if (sc->sysctl_tree != NULL) {
474 snprintf(tmpstr, sizeof(tmpstr),
475 "kern.geom.disk.%s.led", gp->name);
476 TUNABLE_STR_FETCH(tmpstr, sc->led, sizeof(sc->led));
477 SYSCTL_ADD_STRING(&sc->sysctl_ctx,
478 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "led",
479 CTLFLAG_RW | CTLFLAG_TUN, sc->led, sizeof(sc->led),
480 "LED name");
481 }
482 pp->private = sc;
483 dp->d_geom = gp;
484 g_error_provider(pp, 0);
485}
486
487static void
488g_disk_destroy(void *ptr, int flag)
489{
490 struct disk *dp;
491 struct g_geom *gp;
492 struct g_disk_softc *sc;
493
494 g_topology_assert();
495 dp = ptr;
496 gp = dp->d_geom;
497 if (gp != NULL) {
498 sc = gp->softc;
499 if (sc->sysctl_tree != NULL) {
500 sysctl_ctx_free(&sc->sysctl_ctx);
501 sc->sysctl_tree = NULL;
502 }
503 if (sc->led[0] != 0) {
504 led_set(sc->led, "0");
505 sc->led[0] = 0;
506 }
507 g_free(sc);
508 gp->softc = NULL;
509 g_wither_geom(gp, ENXIO);
510 }
511 g_free(dp);
512}
513
514/*
515 * We only allow printable characters in disk ident,
516 * the rest is converted to 'x<HH>'.
517 */
518static void
519g_disk_ident_adjust(char *ident, size_t size)
520{
521 char *p, tmp[4], newid[DISK_IDENT_SIZE];
522
523 newid[0] = '\0';
524 for (p = ident; *p != '\0'; p++) {
525 if (isprint(*p)) {
526 tmp[0] = *p;
527 tmp[1] = '\0';
528 } else {
529 snprintf(tmp, sizeof(tmp), "x%02hhx",
530 *(unsigned char *)p);
531 }
532 if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid))
533 break;
534 }
535 bzero(ident, size);
536 strlcpy(ident, newid, size);
537}
538
539struct disk *
540disk_alloc(void)
541{
542
543 return (g_malloc(sizeof(struct disk), M_WAITOK | M_ZERO));
544}
545
546void
547disk_create(struct disk *dp, int version)
548{
| 288}
289
290static void
291g_disk_start(struct bio *bp)
292{
293 struct bio *bp2, *bp3;
294 struct disk *dp;
295 struct g_disk_softc *sc;
296 int error;
297 off_t off;
298
299 sc = bp->bio_to->geom->softc;
300 if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) {
301 g_io_deliver(bp, ENXIO);
302 return;
303 }
304 error = EJUSTRETURN;
305 switch(bp->bio_cmd) {
306 case BIO_DELETE:
307 if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
308 error = 0;
309 break;
310 }
311 /* fall-through */
312 case BIO_READ:
313 case BIO_WRITE:
314 off = 0;
315 bp3 = NULL;
316 bp2 = g_clone_bio(bp);
317 if (bp2 == NULL) {
318 error = ENOMEM;
319 break;
320 }
321 do {
322 bp2->bio_offset += off;
323 bp2->bio_length -= off;
324 bp2->bio_data += off;
325 if (bp2->bio_length > dp->d_maxsize) {
326 /*
327 * XXX: If we have a stripesize we should really
328 * use it here.
329 */
330 bp2->bio_length = dp->d_maxsize;
331 off += dp->d_maxsize;
332 /*
333 * To avoid a race, we need to grab the next bio
334 * before we schedule this one. See "notes".
335 */
336 bp3 = g_clone_bio(bp);
337 if (bp3 == NULL)
338 bp->bio_error = ENOMEM;
339 }
340 bp2->bio_done = g_disk_done;
341 bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
342 bp2->bio_bcount = bp2->bio_length;
343 bp2->bio_disk = dp;
344 devstat_start_transaction_bio(dp->d_devstat, bp2);
345 g_disk_lock_giant(dp);
346 dp->d_strategy(bp2);
347 g_disk_unlock_giant(dp);
348 bp2 = bp3;
349 bp3 = NULL;
350 } while (bp2 != NULL);
351 break;
352 case BIO_GETATTR:
353 /* Give the driver a chance to override */
354 if (dp->d_getattr != NULL) {
355 if (bp->bio_disk == NULL)
356 bp->bio_disk = dp;
357 error = dp->d_getattr(bp);
358 if (error != -1)
359 break;
360 error = EJUSTRETURN;
361 }
362 if (g_handleattr_int(bp, "GEOM::candelete",
363 (dp->d_flags & DISKFLAG_CANDELETE) != 0))
364 break;
365 else if (g_handleattr_int(bp, "GEOM::fwsectors",
366 dp->d_fwsectors))
367 break;
368 else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
369 break;
370 else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0))
371 break;
372 else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident))
373 break;
374 else if (g_handleattr(bp, "GEOM::hba_vendor",
375 &dp->d_hba_vendor, 2))
376 break;
377 else if (g_handleattr(bp, "GEOM::hba_device",
378 &dp->d_hba_device, 2))
379 break;
380 else if (g_handleattr(bp, "GEOM::hba_subvendor",
381 &dp->d_hba_subvendor, 2))
382 break;
383 else if (g_handleattr(bp, "GEOM::hba_subdevice",
384 &dp->d_hba_subdevice, 2))
385 break;
386 else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump"))
387 g_disk_kerneldump(bp, dp);
388 else if (!strcmp(bp->bio_attribute, "GEOM::setstate"))
389 g_disk_setstate(bp, sc);
390 else
391 error = ENOIOCTL;
392 break;
393 case BIO_FLUSH:
394 g_trace(G_T_TOPOLOGY, "g_disk_flushcache(%s)",
395 bp->bio_to->name);
396 if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) {
397 g_io_deliver(bp, ENODEV);
398 return;
399 }
400 bp2 = g_clone_bio(bp);
401 if (bp2 == NULL) {
402 g_io_deliver(bp, ENOMEM);
403 return;
404 }
405 bp2->bio_done = g_disk_done;
406 bp2->bio_disk = dp;
407 g_disk_lock_giant(dp);
408 dp->d_strategy(bp2);
409 g_disk_unlock_giant(dp);
410 break;
411 default:
412 error = EOPNOTSUPP;
413 break;
414 }
415 if (error != EJUSTRETURN)
416 g_io_deliver(bp, error);
417 return;
418}
419
420static void
421g_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp)
422{
423 struct disk *dp;
424 struct g_disk_softc *sc;
425
426 sc = gp->softc;
427 if (sc == NULL || (dp = sc->dp) == NULL)
428 return;
429 if (indent == NULL) {
430 sbuf_printf(sb, " hd %u", dp->d_fwheads);
431 sbuf_printf(sb, " sc %u", dp->d_fwsectors);
432 return;
433 }
434 if (pp != NULL) {
435 sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n",
436 indent, dp->d_fwheads);
437 sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n",
438 indent, dp->d_fwsectors);
439 sbuf_printf(sb, "%s<ident>%s</ident>\n", indent, dp->d_ident);
440 sbuf_printf(sb, "%s<descr>%s</descr>\n", indent, dp->d_descr);
441 }
442}
443
444static void
445g_disk_create(void *arg, int flag)
446{
447 struct g_geom *gp;
448 struct g_provider *pp;
449 struct disk *dp;
450 struct g_disk_softc *sc;
451 char tmpstr[80];
452
453 if (flag == EV_CANCEL)
454 return;
455 g_topology_assert();
456 dp = arg;
457 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO);
458 sc->dp = dp;
459 gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit);
460 gp->softc = sc;
461 pp = g_new_providerf(gp, "%s", gp->name);
462 pp->mediasize = dp->d_mediasize;
463 pp->sectorsize = dp->d_sectorsize;
464 if (dp->d_flags & DISKFLAG_CANDELETE)
465 pp->flags |= G_PF_CANDELETE;
466 pp->stripeoffset = dp->d_stripeoffset;
467 pp->stripesize = dp->d_stripesize;
468 if (bootverbose)
469 printf("GEOM: new disk %s\n", gp->name);
470 sysctl_ctx_init(&sc->sysctl_ctx);
471 snprintf(tmpstr, sizeof(tmpstr), "GEOM disk %s", gp->name);
472 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
473 SYSCTL_STATIC_CHILDREN(_kern_geom_disk), OID_AUTO, gp->name,
474 CTLFLAG_RD, 0, tmpstr);
475 if (sc->sysctl_tree != NULL) {
476 snprintf(tmpstr, sizeof(tmpstr),
477 "kern.geom.disk.%s.led", gp->name);
478 TUNABLE_STR_FETCH(tmpstr, sc->led, sizeof(sc->led));
479 SYSCTL_ADD_STRING(&sc->sysctl_ctx,
480 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "led",
481 CTLFLAG_RW | CTLFLAG_TUN, sc->led, sizeof(sc->led),
482 "LED name");
483 }
484 pp->private = sc;
485 dp->d_geom = gp;
486 g_error_provider(pp, 0);
487}
488
489static void
490g_disk_destroy(void *ptr, int flag)
491{
492 struct disk *dp;
493 struct g_geom *gp;
494 struct g_disk_softc *sc;
495
496 g_topology_assert();
497 dp = ptr;
498 gp = dp->d_geom;
499 if (gp != NULL) {
500 sc = gp->softc;
501 if (sc->sysctl_tree != NULL) {
502 sysctl_ctx_free(&sc->sysctl_ctx);
503 sc->sysctl_tree = NULL;
504 }
505 if (sc->led[0] != 0) {
506 led_set(sc->led, "0");
507 sc->led[0] = 0;
508 }
509 g_free(sc);
510 gp->softc = NULL;
511 g_wither_geom(gp, ENXIO);
512 }
513 g_free(dp);
514}
515
516/*
517 * We only allow printable characters in disk ident,
518 * the rest is converted to 'x<HH>'.
519 */
520static void
521g_disk_ident_adjust(char *ident, size_t size)
522{
523 char *p, tmp[4], newid[DISK_IDENT_SIZE];
524
525 newid[0] = '\0';
526 for (p = ident; *p != '\0'; p++) {
527 if (isprint(*p)) {
528 tmp[0] = *p;
529 tmp[1] = '\0';
530 } else {
531 snprintf(tmp, sizeof(tmp), "x%02hhx",
532 *(unsigned char *)p);
533 }
534 if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid))
535 break;
536 }
537 bzero(ident, size);
538 strlcpy(ident, newid, size);
539}
540
541struct disk *
542disk_alloc(void)
543{
544
545 return (g_malloc(sizeof(struct disk), M_WAITOK | M_ZERO));
546}
547
548void
549disk_create(struct disk *dp, int version)
550{
|
| 551
|
549 if (version != DISK_VERSION_00 && version != DISK_VERSION_01) {
550 printf("WARNING: Attempt to add disk %s%d %s",
551 dp->d_name, dp->d_unit,
552 " using incompatible ABI version of disk(9)\n");
553 printf("WARNING: Ignoring disk %s%d\n",
554 dp->d_name, dp->d_unit);
555 return;
556 }
557 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
558 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
559 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
560 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
561 if (dp->d_devstat == NULL)
562 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
563 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
564 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
565 dp->d_geom = NULL;
566 g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident));
567 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
568}
569
570void
571disk_destroy(struct disk *dp)
572{
573
574 g_cancel_event(dp);
575 dp->d_destroyed = 1;
576 if (dp->d_devstat != NULL)
577 devstat_remove_entry(dp->d_devstat);
578 g_post_event(g_disk_destroy, dp, M_WAITOK, NULL);
579}
580
581void
582disk_gone(struct disk *dp)
583{
584 struct g_geom *gp;
585 struct g_provider *pp;
586
587 gp = dp->d_geom;
588 if (gp != NULL)
589 LIST_FOREACH(pp, &gp->provider, provider)
590 g_wither_provider(pp, ENXIO);
591}
592
593void
594disk_attr_changed(struct disk *dp, const char *attr, int flag)
595{
596 struct g_geom *gp;
597 struct g_provider *pp;
598
599 gp = dp->d_geom;
600 if (gp != NULL)
601 LIST_FOREACH(pp, &gp->provider, provider)
602 (void)g_attr_changed(pp, attr, flag);
603}
604
605static void
606g_kern_disks(void *p, int flag __unused)
607{
608 struct sbuf *sb;
609 struct g_geom *gp;
610 char *sp;
611
612 sb = p;
613 sp = "";
614 g_topology_assert();
615 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
616 sbuf_printf(sb, "%s%s", sp, gp->name);
617 sp = " ";
618 }
619 sbuf_finish(sb);
620}
621
622static int
623sysctl_disks(SYSCTL_HANDLER_ARGS)
624{
625 int error;
626 struct sbuf *sb;
627
628 sb = sbuf_new_auto();
629 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
630 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
631 sbuf_delete(sb);
632 return error;
633}
634
635SYSCTL_PROC(_kern, OID_AUTO, disks,
636 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
637 sysctl_disks, "A", "names of available disks");
| 552 if (version != DISK_VERSION_00 && version != DISK_VERSION_01) {
553 printf("WARNING: Attempt to add disk %s%d %s",
554 dp->d_name, dp->d_unit,
555 " using incompatible ABI version of disk(9)\n");
556 printf("WARNING: Ignoring disk %s%d\n",
557 dp->d_name, dp->d_unit);
558 return;
559 }
560 KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy"));
561 KASSERT(dp->d_name != NULL, ("disk_create need d_name"));
562 KASSERT(*dp->d_name != 0, ("disk_create need d_name"));
563 KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long"));
564 if (dp->d_devstat == NULL)
565 dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit,
566 dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED,
567 DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
568 dp->d_geom = NULL;
569 g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident));
570 g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL);
571}
572
573void
574disk_destroy(struct disk *dp)
575{
576
577 g_cancel_event(dp);
578 dp->d_destroyed = 1;
579 if (dp->d_devstat != NULL)
580 devstat_remove_entry(dp->d_devstat);
581 g_post_event(g_disk_destroy, dp, M_WAITOK, NULL);
582}
583
584void
585disk_gone(struct disk *dp)
586{
587 struct g_geom *gp;
588 struct g_provider *pp;
589
590 gp = dp->d_geom;
591 if (gp != NULL)
592 LIST_FOREACH(pp, &gp->provider, provider)
593 g_wither_provider(pp, ENXIO);
594}
595
596void
597disk_attr_changed(struct disk *dp, const char *attr, int flag)
598{
599 struct g_geom *gp;
600 struct g_provider *pp;
601
602 gp = dp->d_geom;
603 if (gp != NULL)
604 LIST_FOREACH(pp, &gp->provider, provider)
605 (void)g_attr_changed(pp, attr, flag);
606}
607
608static void
609g_kern_disks(void *p, int flag __unused)
610{
611 struct sbuf *sb;
612 struct g_geom *gp;
613 char *sp;
614
615 sb = p;
616 sp = "";
617 g_topology_assert();
618 LIST_FOREACH(gp, &g_disk_class.geom, geom) {
619 sbuf_printf(sb, "%s%s", sp, gp->name);
620 sp = " ";
621 }
622 sbuf_finish(sb);
623}
624
625static int
626sysctl_disks(SYSCTL_HANDLER_ARGS)
627{
628 int error;
629 struct sbuf *sb;
630
631 sb = sbuf_new_auto();
632 g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL);
633 error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1);
634 sbuf_delete(sb);
635 return error;
636}
637
638SYSCTL_PROC(_kern, OID_AUTO, disks,
639 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
640 sysctl_disks, "A", "names of available disks");
|
638
| |
| |