1 /* 2 * Copyright (c) 2003-2007 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * ---------------------------------------------------------------------------- 35 * "THE BEER-WARE LICENSE" (Revision 42): 36 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 37 * can do whatever you want with this stuff. If we meet some day, and you think 38 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 39 * ---------------------------------------------------------------------------- 40 * 41 * Copyright (c) 1982, 1986, 1988, 1993 42 * The Regents of the University of California. All rights reserved. 43 * (c) UNIX System Laboratories, Inc. 44 * All or some portions of this file are derived from material licensed 45 * to the University of California by American Telephone and Telegraph 46 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 47 * the permission of UNIX System Laboratories, Inc. 48 * 49 * Copyright (c) 1994 Bruce D. Evans. 50 * All rights reserved. 51 * 52 * Copyright (c) 1990 The Regents of the University of California. 53 * All rights reserved. 54 * 55 * This code is derived from software contributed to Berkeley by 56 * William Jolitz. 57 * 58 * Copyright (c) 1982, 1986, 1988 Regents of the University of California. 59 * All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 2. Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * 3. Neither the name of the University nor the names of its contributors 70 * may be used to endorse or promote products derived from this software 71 * without specific prior written permission. 72 * 73 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 74 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 76 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 77 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 78 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 79 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 80 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 81 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 82 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 83 * SUCH DAMAGE. 84 * 85 * @(#)ufs_disksubr.c 8.5 (Berkeley) 1/21/94 86 * $FreeBSD: src/sys/kern/subr_disk.c,v 1.20.2.6 2001/10/05 07:14:57 peter Exp $ 87 * $FreeBSD: src/sys/ufs/ufs/ufs_disksubr.c,v 1.44.2.3 2001/03/05 05:42:19 obrien Exp $ 88 */ 89 90 #include <sys/param.h> 91 #include <sys/systm.h> 92 #include <sys/kernel.h> 93 #include <sys/proc.h> 94 #include <sys/sysctl.h> 95 #include <sys/buf.h> 96 #include <sys/conf.h> 97 #include <sys/disklabel.h> 98 #include <sys/disklabel32.h> 99 #include <sys/diskslice.h> 100 #include <sys/disk.h> 101 #include <sys/dtype.h> /* DTYPE_* constants */ 102 #include <machine/md_var.h> 103 #include <sys/ctype.h> 104 #include <sys/syslog.h> 105 #include <sys/device.h> 106 #include <sys/msgport.h> 107 #include <sys/msgport2.h> 108 #include <sys/buf2.h> 109 110 #include <vfs/ufs/dinode.h> /* XXX used only for fs.h */ 111 #include <vfs/ufs/fs.h> /* XXX used only to get BBSIZE/SBSIZE */ 112 113 static void partition_info(const char *sname, int part, struct partition32 *pp); 114 static void slice_info(const char *sname, struct diskslice *sp); 115 static const char *l32_fixlabel(const char *sname, struct diskslice *sp, 116 disklabel_t lpx, int writeflag); 117 118 /* 119 * Retrieve the partition start and extent, in blocks. Return 0 on success, 120 * EINVAL on error. 121 */ 122 static int 123 l32_getpartbounds(struct diskslices *ssp, disklabel_t lp, u_int32_t part, 124 u_int64_t *start, u_int64_t *blocks) 125 { 126 struct partition32 *pp; 127 128 if (part >= lp.lab32->d_npartitions) 129 return (EINVAL); 130 pp = &lp.lab32->d_partitions[part]; 131 *start = pp->p_offset; 132 *blocks = pp->p_size; 133 return(0); 134 } 135 136 static void 137 l32_loadpartinfo(disklabel_t lp, u_int32_t part, struct partinfo *dpart) 138 { 139 struct partition32 *pp; 140 const size_t uuid_size = sizeof(struct uuid); 141 142 bzero(&dpart->fstype_uuid, uuid_size); 143 bzero(&dpart->storage_uuid, uuid_size); 144 if (part < lp.lab32->d_npartitions) { 145 pp = &lp.lab32->d_partitions[part]; 146 dpart->fstype = pp->p_fstype; 147 } else { 148 dpart->fstype = 0; 149 } 150 } 151 152 static u_int32_t 153 l32_getnumparts(disklabel_t lp) 154 { 155 return(lp.lab32->d_npartitions); 156 } 157 158 static void 159 l32_freedisklabel(disklabel_t *lpp) 160 { 161 kfree((*lpp).lab32, M_DEVBUF); 162 (*lpp).lab32 = NULL; 163 } 164 165 /* 166 * Attempt to read a disk label from a device. 167 * 168 * Returns NULL on sucess, and an error string on failure 169 */ 170 static const char * 171 l32_readdisklabel(cdev_t dev, struct diskslice *sp, disklabel_t *lpp, 172 struct disk_info *info) 173 { 174 disklabel_t lpx; 175 struct buf *bp; 176 struct disklabel32 *dlp; 177 const char *msg = NULL; 178 int secsize = info->d_media_blksize; 179 180 bp = getpbuf_mem(NULL); 181 KKASSERT(secsize <= bp->b_bufsize); 182 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * secsize; 183 bp->b_bio1.bio_done = biodone_sync; 184 bp->b_bio1.bio_flags |= BIO_SYNC; 185 bp->b_bcount = secsize; 186 bp->b_flags &= ~B_INVAL; 187 bp->b_cmd = BUF_CMD_READ; 188 bp->b_flags |= B_FAILONDIS; 189 dev_dstrategy(dev, &bp->b_bio1); 190 if (biowait(&bp->b_bio1, "labrd")) 191 msg = "I/O error"; 192 else for (dlp = (struct disklabel32 *)bp->b_data; 193 dlp <= (struct disklabel32 *)((char *)bp->b_data + 194 secsize - sizeof(*dlp)); 195 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 196 if (dlp->d_magic != DISKMAGIC32 || 197 dlp->d_magic2 != DISKMAGIC32) { 198 /* 199 * NOTE! dsreadandsetlabel() does a strcmp() on 200 * this string. 201 */ 202 if (msg == NULL) 203 msg = "no disk label"; 204 } else if (dlp->d_npartitions > MAXPARTITIONS32 || 205 dkcksum32(dlp) != 0) { 206 msg = "disk label corrupted"; 207 } else { 208 lpx.lab32 = dlp; 209 msg = l32_fixlabel(NULL, sp, lpx, FALSE); 210 if (msg == NULL) { 211 (*lpp).lab32 = kmalloc(sizeof(*dlp), 212 M_DEVBUF, M_WAITOK|M_ZERO); 213 *(*lpp).lab32 = *dlp; 214 } 215 break; 216 } 217 } 218 bp->b_flags |= B_INVAL | B_AGE; 219 relpbuf(bp, NULL); 220 221 return (msg); 222 } 223 224 /* 225 * Check new disk label for sensibility before setting it. 226 */ 227 static int 228 l32_setdisklabel(disklabel_t olpx, disklabel_t nlpx, struct diskslices *ssp, 229 struct diskslice *sp, u_int32_t *openmask) 230 { 231 struct disklabel32 *olp, *nlp; 232 struct partition32 *opp, *npp; 233 int part; 234 int i; 235 236 olp = olpx.lab32; 237 nlp = nlpx.lab32; 238 239 /* 240 * Check it is actually a disklabel we are looking at. 241 */ 242 if (nlp->d_magic != DISKMAGIC32 || nlp->d_magic2 != DISKMAGIC32 || 243 dkcksum32(nlp) != 0) 244 return (EINVAL); 245 246 /* 247 * For each partition that we think is open, check the new disklabel 248 * for compatibility. Ignore special partitions (>= 128). 249 */ 250 i = 0; 251 while (i < 128) { 252 if (openmask[i >> 5] == 0) { 253 i += 32; 254 continue; 255 } 256 if ((openmask[i >> 5] & (1 << (i & 31))) == 0) { 257 ++i; 258 continue; 259 } 260 if (nlp->d_npartitions <= i) 261 return (EBUSY); 262 opp = &olp->d_partitions[i]; 263 npp = &nlp->d_partitions[i]; 264 if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size) 265 return (EBUSY); 266 /* 267 * Copy internally-set partition information 268 * if new label doesn't include it. XXX 269 * (If we are using it then we had better stay the same type) 270 * This is possibly dubious, as someone else noted (XXX) 271 */ 272 if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) { 273 npp->p_fstype = opp->p_fstype; 274 npp->p_fsize = opp->p_fsize; 275 npp->p_frag = opp->p_frag; 276 npp->p_cpg = opp->p_cpg; 277 } 278 ++i; 279 } 280 nlp->d_checksum = 0; 281 nlp->d_checksum = dkcksum32(nlp); 282 *olp = *nlp; 283 284 if (olp->d_partitions[RAW_PART].p_offset) 285 return (EXDEV); 286 if (olp->d_secperunit > sp->ds_size) 287 return (ENOSPC); 288 for (part = 0; part < olp->d_npartitions; ++part) { 289 if (olp->d_partitions[part].p_size > sp->ds_size) 290 return(ENOSPC); 291 } 292 return (0); 293 } 294 295 /* 296 * Write disk label back to device after modification. 297 */ 298 static int 299 l32_writedisklabel(cdev_t dev, struct diskslices *ssp, struct diskslice *sp, 300 disklabel_t lpx) 301 { 302 struct disklabel32 *lp; 303 struct disklabel32 *dlp; 304 struct buf *bp; 305 const char *msg; 306 int error = 0; 307 308 lp = lpx.lab32; 309 310 if (lp->d_partitions[RAW_PART].p_offset != 0) 311 return (EXDEV); /* not quite right */ 312 313 bp = getpbuf_mem(NULL); 314 KKASSERT((int)lp->d_secsize <= bp->b_bufsize); 315 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * lp->d_secsize; 316 bp->b_bio1.bio_done = biodone_sync; 317 bp->b_bio1.bio_flags |= BIO_SYNC; 318 bp->b_bcount = lp->d_secsize; 319 bp->b_flags |= B_FAILONDIS; 320 321 #if 1 322 /* 323 * We read the label first to see if it's there, 324 * in which case we will put ours at the same offset into the block.. 325 * (I think this is stupid [Julian]) 326 * Note that you can't write a label out over a corrupted label! 327 * (also stupid.. how do you write the first one? by raw writes?) 328 */ 329 bp->b_flags &= ~B_INVAL; 330 bp->b_cmd = BUF_CMD_READ; 331 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 332 dev_dstrategy(dev, &bp->b_bio1); 333 error = biowait(&bp->b_bio1, "labrd"); 334 if (error) 335 goto done; 336 for (dlp = (struct disklabel32 *)bp->b_data; 337 dlp <= (struct disklabel32 *) 338 ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp)); 339 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 340 if (dlp->d_magic == DISKMAGIC32 && 341 dlp->d_magic2 == DISKMAGIC32 && dkcksum32(dlp) == 0) { 342 *dlp = *lp; 343 lpx.lab32 = dlp; 344 msg = l32_fixlabel(NULL, sp, lpx, TRUE); 345 if (msg) { 346 error = EINVAL; 347 } else { 348 bp->b_cmd = BUF_CMD_WRITE; 349 bp->b_bio1.bio_done = biodone_sync; 350 bp->b_bio1.bio_flags |= BIO_SYNC; 351 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 352 dev_dstrategy(dev, &bp->b_bio1); 353 error = biowait(&bp->b_bio1, "labwr"); 354 } 355 goto done; 356 } 357 } 358 error = ESRCH; 359 done: 360 #else 361 bzero(bp->b_data, lp->d_secsize); 362 dlp = (struct disklabel32 *)bp->b_data; 363 *dlp = *lp; 364 bp->b_flags &= ~B_INVAL; 365 bp->b_cmd = BUF_CMD_WRITE; 366 bp->b_bio1.bio_done = biodone_sync; 367 bp->b_bio1.bio_flags |= BIO_SYNC; 368 BUF_STRATEGY(bp, 1); 369 error = biowait(&bp->b_bio1, "labwr"); 370 #endif 371 bp->b_flags |= B_INVAL | B_AGE; 372 relpbuf(bp, NULL); 373 374 return (error); 375 } 376 377 /* 378 * Create a disklabel based on a disk_info structure, initializing 379 * the appropriate fields and creating a raw partition that covers the 380 * whole disk. 381 * 382 * If a diskslice is passed, the label is truncated to the slice 383 */ 384 static disklabel_t 385 l32_clone_label(struct disk_info *info, struct diskslice *sp) 386 { 387 struct disklabel32 *lp; 388 disklabel_t res; 389 390 lp = kmalloc(sizeof *lp, M_DEVBUF, M_WAITOK | M_ZERO); 391 lp->d_nsectors = info->d_secpertrack; 392 lp->d_ntracks = info->d_nheads; 393 lp->d_secpercyl = info->d_secpercyl; 394 lp->d_secsize = info->d_media_blksize; 395 396 if (sp) 397 lp->d_secperunit = (u_int)sp->ds_size; 398 else 399 lp->d_secperunit = (u_int)info->d_media_blocks; 400 401 if (lp->d_typename[0] == '\0') 402 strncpy(lp->d_typename, "amnesiac", sizeof(lp->d_typename)); 403 if (lp->d_packname[0] == '\0') 404 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 405 if (lp->d_nsectors == 0) 406 lp->d_nsectors = 32; 407 if (lp->d_ntracks == 0) 408 lp->d_ntracks = 64; 409 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 410 lp->d_ncylinders = lp->d_secperunit / lp->d_secpercyl; 411 if (lp->d_rpm == 0) 412 lp->d_rpm = 3600; 413 if (lp->d_interleave == 0) 414 lp->d_interleave = 1; 415 if (lp->d_npartitions < RAW_PART + 1) 416 lp->d_npartitions = MAXPARTITIONS32; 417 if (lp->d_bbsize == 0) 418 lp->d_bbsize = BBSIZE; 419 if (lp->d_sbsize == 0) 420 lp->d_sbsize = SBSIZE; 421 422 /* 423 * Used by various devices to create a compatibility slice which 424 * allows us to mount root from devices which do not have a 425 * disklabel. Particularly: CDs. 426 */ 427 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 428 if (info->d_dsflags & DSO_COMPATPARTA) { 429 lp->d_partitions[0].p_size = lp->d_secperunit; 430 lp->d_partitions[0].p_fstype = FS_OTHER; 431 } 432 lp->d_magic = DISKMAGIC32; 433 lp->d_magic2 = DISKMAGIC32; 434 lp->d_checksum = dkcksum32(lp); 435 res.lab32 = lp; 436 return (res); 437 } 438 439 static void 440 l32_makevirginlabel(disklabel_t lpx, struct diskslices *ssp, 441 struct diskslice *sp, struct disk_info *info) 442 { 443 struct disklabel32 *lp = lpx.lab32; 444 struct partition32 *pp; 445 disklabel_t template; 446 447 template = l32_clone_label(info, NULL); 448 bcopy(template.opaque, lp, sizeof(struct disklabel32)); 449 450 lp->d_magic = DISKMAGIC32; 451 lp->d_magic2 = DISKMAGIC32; 452 453 lp->d_npartitions = MAXPARTITIONS32; 454 if (lp->d_interleave == 0) 455 lp->d_interleave = 1; 456 if (lp->d_rpm == 0) 457 lp->d_rpm = 3600; 458 if (lp->d_nsectors == 0) /* sectors per track */ 459 lp->d_nsectors = 32; 460 if (lp->d_ntracks == 0) /* heads */ 461 lp->d_ntracks = 64; 462 lp->d_ncylinders = 0; 463 lp->d_bbsize = BBSIZE; 464 lp->d_sbsize = SBSIZE; 465 466 /* 467 * If the slice or GPT partition is really small we could 468 * wind up with an absurd calculation for ncylinders. 469 */ 470 while (lp->d_ncylinders < 4) { 471 if (lp->d_ntracks > 1) 472 lp->d_ntracks >>= 1; 473 else if (lp->d_nsectors > 1) 474 lp->d_nsectors >>= 1; 475 else 476 break; 477 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 478 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 479 } 480 481 /* 482 * Set or Modify the partition sizes to accomodate the slice, 483 * since we started with a copy of the virgin label stored 484 * in the whole-disk-slice and we are probably not a 485 * whole-disk slice. 486 */ 487 lp->d_secperunit = sp->ds_size; 488 pp = &lp->d_partitions[RAW_PART]; 489 pp->p_offset = 0; 490 pp->p_size = lp->d_secperunit; 491 if (info->d_dsflags & DSO_COMPATPARTA) { 492 pp = &lp->d_partitions[0]; 493 pp->p_offset = 0; 494 pp->p_size = lp->d_secperunit; 495 pp->p_fstype = FS_OTHER; 496 } 497 lp->d_checksum = 0; 498 lp->d_checksum = dkcksum32(lp); 499 500 kfree(template.opaque, M_DEVBUF); 501 } 502 503 static const char * 504 l32_fixlabel(const char *sname, struct diskslice *sp, 505 disklabel_t lpx, int writeflag) 506 { 507 struct disklabel32 *lp; 508 struct partition32 *pp; 509 u_int64_t start; 510 u_int64_t end; 511 u_int64_t offset; 512 int part; 513 int warned; 514 515 lp = lpx.lab32; 516 517 /* These errors "can't happen" so don't bother reporting details. */ 518 if (lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32) 519 return ("fixlabel: invalid magic"); 520 if (dkcksum32(lp) != 0) 521 return ("fixlabel: invalid checksum"); 522 523 pp = &lp->d_partitions[RAW_PART]; 524 525 /* 526 * What a mess. For ages old backwards compatibility the disklabel 527 * on-disk stores absolute offsets instead of slice-relative offsets. 528 * So fix it up when reading, writing, or snooping. 529 * 530 * The in-core label is always slice-relative. 531 */ 532 if (writeflag) { 533 start = 0; 534 offset = sp->ds_offset; 535 } else { 536 start = sp->ds_offset; 537 offset = -sp->ds_offset; 538 } 539 if (pp->p_offset != start) { 540 if (sname != NULL) { 541 kprintf( 542 "%s: rejecting BSD label: raw partition offset != slice offset\n", 543 sname); 544 slice_info(sname, sp); 545 partition_info(sname, RAW_PART, pp); 546 } 547 return ("fixlabel: raw partition offset != slice offset"); 548 } 549 if (pp->p_size != sp->ds_size) { 550 if (sname != NULL) { 551 kprintf("%s: raw partition size != slice size\n", sname); 552 slice_info(sname, sp); 553 partition_info(sname, RAW_PART, pp); 554 } 555 if (pp->p_size > sp->ds_size) { 556 if (sname == NULL) 557 return ("fixlabel: raw partition size > slice size"); 558 kprintf("%s: truncating raw partition\n", sname); 559 pp->p_size = sp->ds_size; 560 } 561 } 562 end = start + sp->ds_size; 563 if (start > end) 564 return ("fixlabel: slice wraps"); 565 if (lp->d_secpercyl <= 0) 566 return ("fixlabel: d_secpercyl <= 0"); 567 pp -= RAW_PART; 568 warned = FALSE; 569 for (part = 0; part < lp->d_npartitions; part++, pp++) { 570 if (pp->p_offset != 0 || pp->p_size != 0) { 571 if (pp->p_offset < start 572 || pp->p_offset + pp->p_size > end 573 || pp->p_offset + pp->p_size < pp->p_offset) { 574 if (sname != NULL) { 575 kprintf( 576 "%s: rejecting partition in BSD label: it isn't entirely within the slice\n", 577 sname); 578 if (!warned) { 579 slice_info(sname, sp); 580 warned = TRUE; 581 } 582 partition_info(sname, part, pp); 583 } 584 /* XXX else silently discard junk. */ 585 bzero(pp, sizeof *pp); 586 } else { 587 pp->p_offset += offset; 588 } 589 } 590 } 591 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 592 lp->d_secperunit = sp->ds_size; 593 lp->d_checksum = 0; 594 lp->d_checksum = dkcksum32(lp); 595 return (NULL); 596 } 597 598 /* 599 * Set the number of blocks at the beginning of the slice which have 600 * been reserved for label operations. This area will be write-protected 601 * when accessed via the slice. 602 */ 603 static void 604 l32_adjust_label_reserved(struct diskslices *ssp, int slice, 605 struct diskslice *sp) 606 { 607 /*struct disklabel32 *lp = sp->ds_label.lab32;*/ 608 sp->ds_reserved = SBSIZE / ssp->dss_secsize; 609 } 610 611 static void 612 partition_info(const char *sname, int part, struct partition32 *pp) 613 { 614 kprintf("%s%c: start %lu, end %lu, size %lu\n", sname, 'a' + part, 615 (u_long)pp->p_offset, (u_long)(pp->p_offset + pp->p_size - 1), 616 (u_long)pp->p_size); 617 } 618 619 static void 620 slice_info(const char *sname, struct diskslice *sp) 621 { 622 kprintf("%s: start %llu, end %llu, size %llu\n", sname, 623 (long long)sp->ds_offset, 624 (long long)sp->ds_offset + sp->ds_size - 1, 625 (long long)sp->ds_size); 626 } 627 628 struct disklabel_ops disklabel32_ops = { 629 .labelsize = sizeof(struct disklabel32), 630 .op_readdisklabel = l32_readdisklabel, 631 .op_setdisklabel = l32_setdisklabel, 632 .op_writedisklabel = l32_writedisklabel, 633 .op_clone_label = l32_clone_label, 634 .op_adjust_label_reserved = l32_adjust_label_reserved, 635 .op_getpartbounds = l32_getpartbounds, 636 .op_loadpartinfo = l32_loadpartinfo, 637 .op_getnumparts = l32_getnumparts, 638 .op_makevirginlabel = l32_makevirginlabel, 639 .op_freedisklabel = l32_freedisklabel 640 }; 641 642