geom_bsd.c revision 157581
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/* 37 * This is the method for dealing with BSD disklabels. It has been 38 * extensively (by my standards at least) commented, in the vain hope that 39 * it will serve as the source in future copy&paste operations. 40 */ 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: head/sys/geom/geom_bsd.c 157581 2006-04-07 16:19:48Z marcel $"); 44 45#include <sys/param.h> 46#include <sys/endian.h> 47#include <sys/systm.h> 48#include <sys/kernel.h> 49#include <sys/fcntl.h> 50#include <sys/conf.h> 51#include <sys/bio.h> 52#include <sys/malloc.h> 53#include <sys/lock.h> 54#include <sys/mutex.h> 55#include <sys/md5.h> 56#include <sys/errno.h> 57#include <sys/disklabel.h> 58#include <geom/geom.h> 59#include <geom/geom_slice.h> 60 61#define BSD_CLASS_NAME "BSD" 62 63#define ALPHA_LABEL_OFFSET 64 64#define HISTORIC_LABEL_OFFSET 512 65 66#define LABELSIZE (148 + 16 * MAXPARTITIONS) 67 68static void g_bsd_hotwrite(void *arg, int flag); 69/* 70 * Our private data about one instance. All the rest is handled by the 71 * slice code and stored in its softc, so this is just the stuff 72 * specific to BSD disklabels. 73 */ 74struct g_bsd_softc { 75 off_t labeloffset; 76 off_t mbroffset; 77 off_t rawoffset; 78 struct disklabel ondisk; 79 u_char label[LABELSIZE]; 80 u_char labelsum[16]; 81}; 82 83/* 84 * Modify our slicer to match proposed disklabel, if possible. 85 * This is where we make sure we don't do something stupid. 86 */ 87static int 88g_bsd_modify(struct g_geom *gp, u_char *label) 89{ 90 int i, error; 91 struct partition *ppp; 92 struct g_slicer *gsp; 93 struct g_consumer *cp; 94 struct g_bsd_softc *ms; 95 u_int secsize, u; 96 off_t rawoffset, o; 97 struct disklabel dl; 98 MD5_CTX md5sum; 99 100 g_topology_assert(); 101 gsp = gp->softc; 102 ms = gsp->softc; 103 104 error = bsd_disklabel_le_dec(label, &dl, MAXPARTITIONS); 105 if (error) { 106 return (error); 107 } 108 109 /* Get dimensions of our device. */ 110 cp = LIST_FIRST(&gp->consumer); 111 secsize = cp->provider->sectorsize; 112 113 /* ... or a smaller sector size. */ 114 if (dl.d_secsize < secsize) { 115 return (EINVAL); 116 } 117 118 /* ... or a non-multiple sector size. */ 119 if (dl.d_secsize % secsize != 0) { 120 return (EINVAL); 121 } 122 123 /* Historical braindamage... */ 124 rawoffset = (off_t)dl.d_partitions[RAW_PART].p_offset * dl.d_secsize; 125 126 for (i = 0; i < dl.d_npartitions; i++) { 127 ppp = &dl.d_partitions[i]; 128 if (ppp->p_size == 0) 129 continue; 130 o = (off_t)ppp->p_offset * dl.d_secsize; 131 132 if (o < rawoffset) 133 rawoffset = 0; 134 } 135 136 if (rawoffset != 0 && (off_t)rawoffset != ms->mbroffset) 137 printf("WARNING: Expected rawoffset %jd, found %jd\n", 138 (intmax_t)ms->mbroffset/dl.d_secsize, 139 (intmax_t)rawoffset/dl.d_secsize); 140 141 /* Don't munge open partitions. */ 142 for (i = 0; i < dl.d_npartitions; i++) { 143 ppp = &dl.d_partitions[i]; 144 145 o = (off_t)ppp->p_offset * dl.d_secsize; 146 if (o == 0) 147 o = rawoffset; 148 error = g_slice_config(gp, i, G_SLICE_CONFIG_CHECK, 149 o - rawoffset, 150 (off_t)ppp->p_size * dl.d_secsize, 151 dl.d_secsize, 152 "%s%c", gp->name, 'a' + i); 153 if (error) 154 return (error); 155 } 156 157 /* Look good, go for it... */ 158 for (u = 0; u < gsp->nslice; u++) { 159 ppp = &dl.d_partitions[u]; 160 o = (off_t)ppp->p_offset * dl.d_secsize; 161 if (o == 0) 162 o = rawoffset; 163 g_slice_config(gp, u, G_SLICE_CONFIG_SET, 164 o - rawoffset, 165 (off_t)ppp->p_size * dl.d_secsize, 166 dl.d_secsize, 167 "%s%c", gp->name, 'a' + u); 168 } 169 170 /* Update our softc */ 171 ms->ondisk = dl; 172 if (label != ms->label) 173 bcopy(label, ms->label, LABELSIZE); 174 ms->rawoffset = rawoffset; 175 176 /* 177 * In order to avoid recursively attaching to the same 178 * on-disk label (it's usually visible through the 'c' 179 * partition) we calculate an MD5 and ask if other BSD's 180 * below us love that label. If they do, we don't. 181 */ 182 MD5Init(&md5sum); 183 MD5Update(&md5sum, ms->label, sizeof(ms->label)); 184 MD5Final(ms->labelsum, &md5sum); 185 186 return (0); 187} 188 189/* 190 * This is an internal helper function, called multiple times from the taste 191 * function to try to locate a disklabel on the disk. More civilized formats 192 * will not need this, as there is only one possible place on disk to look 193 * for the magic spot. 194 */ 195 196static int 197g_bsd_try(struct g_geom *gp, struct g_slicer *gsp, struct g_consumer *cp, int secsize, struct g_bsd_softc *ms, off_t offset) 198{ 199 int error; 200 u_char *buf; 201 struct disklabel *dl; 202 off_t secoff; 203 204 /* 205 * We need to read entire aligned sectors, and we assume that the 206 * disklabel does not span sectors, so one sector is enough. 207 */ 208 secoff = offset % secsize; 209 buf = g_read_data(cp, offset - secoff, secsize, NULL); 210 if (buf == NULL) 211 return (ENOENT); 212 213 /* Decode into our native format. */ 214 dl = &ms->ondisk; 215 error = bsd_disklabel_le_dec(buf + secoff, dl, MAXPARTITIONS); 216 if (!error) 217 bcopy(buf + secoff, ms->label, LABELSIZE); 218 219 /* Remember to free the buffer g_read_data() gave us. */ 220 g_free(buf); 221 222 ms->labeloffset = offset; 223 return (error); 224} 225 226/* 227 * This function writes the current label to disk, possibly updating 228 * the alpha SRM checksum. 229 */ 230 231static int 232g_bsd_writelabel(struct g_geom *gp, u_char *bootcode) 233{ 234 off_t secoff; 235 u_int secsize; 236 struct g_consumer *cp; 237 struct g_slicer *gsp; 238 struct g_bsd_softc *ms; 239 u_char *buf; 240 uint64_t sum; 241 int error, i; 242 243 gsp = gp->softc; 244 ms = gsp->softc; 245 cp = LIST_FIRST(&gp->consumer); 246 /* Get sector size, we need it to read data. */ 247 secsize = cp->provider->sectorsize; 248 secoff = ms->labeloffset % secsize; 249 if (bootcode == NULL) { 250 buf = g_read_data(cp, ms->labeloffset - secoff, secsize, &error); 251 if (buf == NULL) 252 return (error); 253 bcopy(ms->label, buf + secoff, sizeof(ms->label)); 254 } else { 255 buf = bootcode; 256 bcopy(ms->label, buf + ms->labeloffset, sizeof(ms->label)); 257 } 258 if (ms->labeloffset == ALPHA_LABEL_OFFSET) { 259 sum = 0; 260 for (i = 0; i < 63; i++) 261 sum += le64dec(buf + i * 8); 262 le64enc(buf + 504, sum); 263 } 264 if (bootcode == NULL) { 265 error = g_write_data(cp, ms->labeloffset - secoff, buf, secsize); 266 g_free(buf); 267 } else { 268 error = g_write_data(cp, 0, bootcode, BBSIZE); 269 } 270 return(error); 271} 272 273/* 274 * If the user tries to overwrite our disklabel through an open partition 275 * or via a magicwrite config call, we end up here and try to prevent 276 * footshooting as best we can. 277 */ 278static void 279g_bsd_hotwrite(void *arg, int flag) 280{ 281 struct bio *bp; 282 struct g_geom *gp; 283 struct g_slicer *gsp; 284 struct g_slice *gsl; 285 struct g_bsd_softc *ms; 286 u_char *p; 287 int error; 288 289 g_topology_assert(); 290 /* 291 * We should never get canceled, because that would amount to a removal 292 * of the geom while there was outstanding I/O requests. 293 */ 294 KASSERT(flag != EV_CANCEL, ("g_bsd_hotwrite cancelled")); 295 bp = arg; 296 gp = bp->bio_to->geom; 297 gsp = gp->softc; 298 ms = gsp->softc; 299 gsl = &gsp->slices[bp->bio_to->index]; 300 p = (u_char*)bp->bio_data + ms->labeloffset 301 - (bp->bio_offset + gsl->offset); 302 error = g_bsd_modify(gp, p); 303 if (error) { 304 g_io_deliver(bp, EPERM); 305 return; 306 } 307 g_slice_finish_hot(bp); 308} 309 310/*- 311 * This start routine is only called for non-trivial requests, all the 312 * trivial ones are handled autonomously by the slice code. 313 * For requests we handle here, we must call the g_io_deliver() on the 314 * bio, and return non-zero to indicate to the slice code that we did so. 315 * This code executes in the "DOWN" I/O path, this means: 316 * * No sleeping. 317 * * Don't grab the topology lock. 318 * * Don't call biowait, g_getattr(), g_setattr() or g_read_data() 319 */ 320static int 321g_bsd_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td) 322{ 323 struct g_geom *gp; 324 struct g_bsd_softc *ms; 325 struct g_slicer *gsp; 326 u_char *label; 327 int error; 328 329 gp = pp->geom; 330 gsp = gp->softc; 331 ms = gsp->softc; 332 333 switch(cmd) { 334 case DIOCGDINFO: 335 /* Return a copy of the disklabel to userland. */ 336 bsd_disklabel_le_dec(ms->label, data, MAXPARTITIONS); 337 return(0); 338 case DIOCBSDBB: { 339 struct g_consumer *cp; 340 u_char *buf; 341 void *p; 342 int error, i; 343 uint64_t sum; 344 345 if (!(fflag & FWRITE)) 346 return (EPERM); 347 /* The disklabel to set is the ioctl argument. */ 348 buf = g_malloc(BBSIZE, M_WAITOK); 349 p = *(void **)data; 350 error = copyin(p, buf, BBSIZE); 351 if (!error) { 352 /* XXX: Rude, but supposedly safe */ 353 DROP_GIANT(); 354 g_topology_lock(); 355 /* Validate and modify our slice instance to match. */ 356 error = g_bsd_modify(gp, buf + ms->labeloffset); 357 if (!error) { 358 cp = LIST_FIRST(&gp->consumer); 359 if (ms->labeloffset == ALPHA_LABEL_OFFSET) { 360 sum = 0; 361 for (i = 0; i < 63; i++) 362 sum += le64dec(buf + i * 8); 363 le64enc(buf + 504, sum); 364 } 365 error = g_write_data(cp, 0, buf, BBSIZE); 366 } 367 g_topology_unlock(); 368 PICKUP_GIANT(); 369 } 370 g_free(buf); 371 return (error); 372 } 373 case DIOCSDINFO: 374 case DIOCWDINFO: { 375 if (!(fflag & FWRITE)) 376 return (EPERM); 377 label = g_malloc(LABELSIZE, M_WAITOK); 378 /* The disklabel to set is the ioctl argument. */ 379 bsd_disklabel_le_enc(label, data); 380 381 DROP_GIANT(); 382 g_topology_lock(); 383 /* Validate and modify our slice instance to match. */ 384 error = g_bsd_modify(gp, label); 385 if (error == 0 && cmd == DIOCWDINFO) 386 error = g_bsd_writelabel(gp, NULL); 387 g_topology_unlock(); 388 PICKUP_GIANT(); 389 g_free(label); 390 return(error); 391 } 392 default: 393 return (ENOIOCTL); 394 } 395} 396 397static int 398g_bsd_start(struct bio *bp) 399{ 400 struct g_geom *gp; 401 struct g_bsd_softc *ms; 402 struct g_slicer *gsp; 403 404 gp = bp->bio_to->geom; 405 gsp = gp->softc; 406 ms = gsp->softc; 407 if (bp->bio_cmd == BIO_GETATTR) { 408 if (g_handleattr(bp, "BSD::labelsum", ms->labelsum, 409 sizeof(ms->labelsum))) 410 return (1); 411 } 412 return (0); 413} 414 415/* 416 * Dump configuration information in XML format. 417 * Notice that the function is called once for the geom and once for each 418 * consumer and provider. We let g_slice_dumpconf() do most of the work. 419 */ 420static void 421g_bsd_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp) 422{ 423 struct g_bsd_softc *ms; 424 struct g_slicer *gsp; 425 426 gsp = gp->softc; 427 ms = gsp->softc; 428 g_slice_dumpconf(sb, indent, gp, cp, pp); 429 if (indent != NULL && pp == NULL && cp == NULL) { 430 sbuf_printf(sb, "%s<labeloffset>%jd</labeloffset>\n", 431 indent, (intmax_t)ms->labeloffset); 432 sbuf_printf(sb, "%s<rawoffset>%jd</rawoffset>\n", 433 indent, (intmax_t)ms->rawoffset); 434 sbuf_printf(sb, "%s<mbroffset>%jd</mbroffset>\n", 435 indent, (intmax_t)ms->mbroffset); 436 } else if (pp != NULL) { 437 if (indent == NULL) 438 sbuf_printf(sb, " ty %d", 439 ms->ondisk.d_partitions[pp->index].p_fstype); 440 else 441 sbuf_printf(sb, "%s<type>%d</type>\n", indent, 442 ms->ondisk.d_partitions[pp->index].p_fstype); 443 } 444} 445 446/* 447 * The taste function is called from the event-handler, with the topology 448 * lock already held and a provider to examine. The flags are unused. 449 * 450 * If flags == G_TF_NORMAL, the idea is to take a bite of the provider and 451 * if we find valid, consistent magic on it, build a geom on it. 452 * any magic bits which indicate that we should automatically put a BSD 453 * geom on it. 454 * 455 * There may be cases where the operator would like to put a BSD-geom on 456 * providers which do not meet all of the requirements. This can be done 457 * by instead passing the G_TF_INSIST flag, which will override these 458 * checks. 459 * 460 * The final flags value is G_TF_TRANSPARENT, which instructs the method 461 * to put a geom on top of the provider and configure it to be as transparent 462 * as possible. This is not really relevant to the BSD method and therefore 463 * not implemented here. 464 */ 465 466static struct g_geom * 467g_bsd_taste(struct g_class *mp, struct g_provider *pp, int flags) 468{ 469 struct g_geom *gp; 470 struct g_consumer *cp; 471 int error, i; 472 struct g_bsd_softc *ms; 473 u_int secsize; 474 struct g_slicer *gsp; 475 u_char hash[16]; 476 MD5_CTX md5sum; 477 478 g_trace(G_T_TOPOLOGY, "bsd_taste(%s,%s)", mp->name, pp->name); 479 g_topology_assert(); 480 481 /* We don't implement transparent inserts. */ 482 if (flags == G_TF_TRANSPARENT) 483 return (NULL); 484 485 /* 486 * BSD labels are a subclass of the general "slicing" topology so 487 * a lot of the work can be done by the common "slice" code. 488 * Create a geom with space for MAXPARTITIONS providers, one consumer 489 * and a softc structure for us. Specify the provider to attach 490 * the consumer to and our "start" routine for special requests. 491 * The provider is opened with mode (1,0,0) so we can do reads 492 * from it. 493 */ 494 gp = g_slice_new(mp, MAXPARTITIONS, pp, &cp, &ms, 495 sizeof(*ms), g_bsd_start); 496 if (gp == NULL) 497 return (NULL); 498 499 /* Get the geom_slicer softc from the geom. */ 500 gsp = gp->softc; 501 502 /* 503 * The do...while loop here allows us to have multiple escapes 504 * using a simple "break". This improves code clarity without 505 * ending up in deep nesting and without using goto or come from. 506 */ 507 do { 508 /* 509 * If the provider is an MBR we will only auto attach 510 * to type 165 slices in the G_TF_NORMAL case. We will 511 * attach to any other type. 512 */ 513 error = g_getattr("MBR::type", cp, &i); 514 if (!error) { 515 if (i != 165 && flags == G_TF_NORMAL) 516 break; 517 error = g_getattr("MBR::offset", cp, &ms->mbroffset); 518 if (error) 519 break; 520 } 521 522 /* Same thing if we are inside a PC98 */ 523 error = g_getattr("PC98::type", cp, &i); 524 if (!error) { 525 if (i != 0xc494 && flags == G_TF_NORMAL) 526 break; 527 error = g_getattr("PC98::offset", cp, &ms->mbroffset); 528 if (error) 529 break; 530 } 531 532 /* Get sector size, we need it to read data. */ 533 secsize = cp->provider->sectorsize; 534 if (secsize < 512) 535 break; 536 537 /* First look for a label at the start of the second sector. */ 538 error = g_bsd_try(gp, gsp, cp, secsize, ms, secsize); 539 540 /* 541 * If sector size is not 512 the label still can be at 542 * offset 512, not at the start of the second sector. At least 543 * it's true for labels created by the FreeBSD's bsdlabel(8). 544 */ 545 if (error && secsize != HISTORIC_LABEL_OFFSET) 546 error = g_bsd_try(gp, gsp, cp, secsize, ms, 547 HISTORIC_LABEL_OFFSET); 548 549 /* Next, look for alpha labels */ 550 if (error) 551 error = g_bsd_try(gp, gsp, cp, secsize, ms, 552 ALPHA_LABEL_OFFSET); 553 554 /* If we didn't find a label, punt. */ 555 if (error) 556 break; 557 558 /* 559 * In order to avoid recursively attaching to the same 560 * on-disk label (it's usually visible through the 'c' 561 * partition) we calculate an MD5 and ask if other BSD's 562 * below us love that label. If they do, we don't. 563 */ 564 MD5Init(&md5sum); 565 MD5Update(&md5sum, ms->label, sizeof(ms->label)); 566 MD5Final(ms->labelsum, &md5sum); 567 568 error = g_getattr("BSD::labelsum", cp, &hash); 569 if (!error && !bcmp(ms->labelsum, hash, sizeof(hash))) 570 break; 571 572 /* 573 * Process the found disklabel, and modify our "slice" 574 * instance to match it, if possible. 575 */ 576 error = g_bsd_modify(gp, ms->label); 577 } while (0); 578 579 /* Success or failure, we can close our provider now. */ 580 g_access(cp, -1, 0, 0); 581 582 /* If we have configured any providers, return the new geom. */ 583 if (gsp->nprovider > 0) { 584 g_slice_conf_hot(gp, 0, ms->labeloffset, LABELSIZE, 585 G_SLICE_HOT_ALLOW, G_SLICE_HOT_DENY, G_SLICE_HOT_CALL); 586 gsp->hot = g_bsd_hotwrite; 587 return (gp); 588 } 589 /* 590 * ...else push the "self-destruct" button, by spoiling our own 591 * consumer. This triggers a call to g_slice_spoiled which will 592 * dismantle what was setup. 593 */ 594 g_slice_spoiled(cp); 595 return (NULL); 596} 597 598struct h0h0 { 599 struct g_geom *gp; 600 struct g_bsd_softc *ms; 601 u_char *label; 602 int error; 603}; 604 605static void 606g_bsd_callconfig(void *arg, int flag) 607{ 608 struct h0h0 *hp; 609 610 hp = arg; 611 hp->error = g_bsd_modify(hp->gp, hp->label); 612 if (!hp->error) 613 hp->error = g_bsd_writelabel(hp->gp, NULL); 614} 615 616/* 617 * NB! curthread is user process which GCTL'ed. 618 */ 619static void 620g_bsd_config(struct gctl_req *req, struct g_class *mp, char const *verb) 621{ 622 u_char *label; 623 int error; 624 struct h0h0 h0h0; 625 struct g_geom *gp; 626 struct g_slicer *gsp; 627 struct g_consumer *cp; 628 struct g_bsd_softc *ms; 629 630 g_topology_assert(); 631 gp = gctl_get_geom(req, mp, "geom"); 632 if (gp == NULL) 633 return; 634 cp = LIST_FIRST(&gp->consumer); 635 gsp = gp->softc; 636 ms = gsp->softc; 637 if (!strcmp(verb, "read mbroffset")) { 638 gctl_set_param_err(req, "mbroffset", &ms->mbroffset, 639 sizeof(ms->mbroffset)); 640 return; 641 } else if (!strcmp(verb, "write label")) { 642 label = gctl_get_paraml(req, "label", LABELSIZE); 643 if (label == NULL) 644 return; 645 h0h0.gp = gp; 646 h0h0.ms = gsp->softc; 647 h0h0.label = label; 648 h0h0.error = -1; 649 /* XXX: Does this reference register with our selfdestruct code ? */ 650 error = g_access(cp, 1, 1, 1); 651 if (error) { 652 gctl_error(req, "could not access consumer"); 653 return; 654 } 655 g_bsd_callconfig(&h0h0, 0); 656 error = h0h0.error; 657 g_access(cp, -1, -1, -1); 658 } else if (!strcmp(verb, "write bootcode")) { 659 label = gctl_get_paraml(req, "bootcode", BBSIZE); 660 if (label == NULL) 661 return; 662 /* XXX: Does this reference register with our selfdestruct code ? */ 663 error = g_access(cp, 1, 1, 1); 664 if (error) { 665 gctl_error(req, "could not access consumer"); 666 return; 667 } 668 error = g_bsd_writelabel(gp, label); 669 g_access(cp, -1, -1, -1); 670 } else { 671 gctl_error(req, "Unknown verb parameter"); 672 } 673 674 return; 675} 676 677/* Finally, register with GEOM infrastructure. */ 678static struct g_class g_bsd_class = { 679 .name = BSD_CLASS_NAME, 680 .version = G_VERSION, 681 .taste = g_bsd_taste, 682 .ctlreq = g_bsd_config, 683 .dumpconf = g_bsd_dumpconf, 684 .ioctl = g_bsd_ioctl, 685}; 686 687DECLARE_GEOM_CLASS(g_bsd_class, g_bsd); 688