Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/kern/subr_disklabel32.c
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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 = geteblk(secsize); 181 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * secsize; 182 bp->b_bio1.bio_done = biodone_sync; 183 bp->b_bio1.bio_flags |= BIO_SYNC; 184 bp->b_bcount = secsize; 185 bp->b_flags &= ~B_INVAL; 186 bp->b_cmd = BUF_CMD_READ; 187 dev_dstrategy(dev, &bp->b_bio1); 188 if (biowait(&bp->b_bio1, "labrd")) 189 msg = "I/O error"; 190 else for (dlp = (struct disklabel32 *)bp->b_data; 191 dlp <= (struct disklabel32 *)((char *)bp->b_data + 192 secsize - sizeof(*dlp)); 193 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 194 if (dlp->d_magic != DISKMAGIC32 || 195 dlp->d_magic2 != DISKMAGIC32) { 196 /* 197 * NOTE! dsreadandsetlabel() does a strcmp() on 198 * this string. 199 */ 200 if (msg == NULL) 201 msg = "no disk label"; 202 } else if (dlp->d_npartitions > MAXPARTITIONS32 || 203 dkcksum32(dlp) != 0) { 204 msg = "disk label corrupted"; 205 } else { 206 lpx.lab32 = dlp; 207 msg = l32_fixlabel(NULL, sp, lpx, FALSE); 208 if (msg == NULL) { 209 (*lpp).lab32 = kmalloc(sizeof(*dlp), 210 M_DEVBUF, M_WAITOK|M_ZERO); 211 *(*lpp).lab32 = *dlp; 212 } 213 break; 214 } 215 } 216 bp->b_flags |= B_INVAL | B_AGE; 217 brelse(bp); 218 return (msg); 219 } 220 221 /* 222 * Check new disk label for sensibility before setting it. 223 */ 224 static int 225 l32_setdisklabel(disklabel_t olpx, disklabel_t nlpx, struct diskslices *ssp, 226 struct diskslice *sp, u_int32_t *openmask) 227 { 228 struct disklabel32 *olp, *nlp; 229 struct partition32 *opp, *npp; 230 int part; 231 int i; 232 233 olp = olpx.lab32; 234 nlp = nlpx.lab32; 235 236 /* 237 * Check it is actually a disklabel we are looking at. 238 */ 239 if (nlp->d_magic != DISKMAGIC32 || nlp->d_magic2 != DISKMAGIC32 || 240 dkcksum32(nlp) != 0) 241 return (EINVAL); 242 243 /* 244 * For each partition that we think is open, check the new disklabel 245 * for compatibility. Ignore special partitions (>= 128). 246 */ 247 i = 0; 248 while (i < 128) { 249 if (openmask[i >> 5] == 0) { 250 i += 32; 251 continue; 252 } 253 if ((openmask[i >> 5] & (1 << (i & 31))) == 0) { 254 ++i; 255 continue; 256 } 257 if (nlp->d_npartitions <= i) 258 return (EBUSY); 259 opp = &olp->d_partitions[i]; 260 npp = &nlp->d_partitions[i]; 261 if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size) 262 return (EBUSY); 263 /* 264 * Copy internally-set partition information 265 * if new label doesn't include it. XXX 266 * (If we are using it then we had better stay the same type) 267 * This is possibly dubious, as someone else noted (XXX) 268 */ 269 if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) { 270 npp->p_fstype = opp->p_fstype; 271 npp->p_fsize = opp->p_fsize; 272 npp->p_frag = opp->p_frag; 273 npp->p_cpg = opp->p_cpg; 274 } 275 ++i; 276 } 277 nlp->d_checksum = 0; 278 nlp->d_checksum = dkcksum32(nlp); 279 *olp = *nlp; 280 281 if (olp->d_partitions[RAW_PART].p_offset) 282 return (EXDEV); 283 if (olp->d_secperunit > sp->ds_size) 284 return (ENOSPC); 285 for (part = 0; part < olp->d_npartitions; ++part) { 286 if (olp->d_partitions[part].p_size > sp->ds_size) 287 return(ENOSPC); 288 } 289 return (0); 290 } 291 292 /* 293 * Write disk label back to device after modification. 294 */ 295 static int 296 l32_writedisklabel(cdev_t dev, struct diskslices *ssp, struct diskslice *sp, 297 disklabel_t lpx) 298 { 299 struct disklabel32 *lp; 300 struct disklabel32 *dlp; 301 struct buf *bp; 302 const char *msg; 303 int error = 0; 304 305 lp = lpx.lab32; 306 307 if (lp->d_partitions[RAW_PART].p_offset != 0) 308 return (EXDEV); /* not quite right */ 309 310 bp = geteblk((int)lp->d_secsize); 311 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * lp->d_secsize; 312 bp->b_bio1.bio_done = biodone_sync; 313 bp->b_bio1.bio_flags |= BIO_SYNC; 314 bp->b_bcount = lp->d_secsize; 315 316 #if 1 317 /* 318 * We read the label first to see if it's there, 319 * in which case we will put ours at the same offset into the block.. 320 * (I think this is stupid [Julian]) 321 * Note that you can't write a label out over a corrupted label! 322 * (also stupid.. how do you write the first one? by raw writes?) 323 */ 324 bp->b_flags &= ~B_INVAL; 325 bp->b_cmd = BUF_CMD_READ; 326 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 327 dev_dstrategy(dev, &bp->b_bio1); 328 error = biowait(&bp->b_bio1, "labrd"); 329 if (error) 330 goto done; 331 for (dlp = (struct disklabel32 *)bp->b_data; 332 dlp <= (struct disklabel32 *) 333 ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp)); 334 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 335 if (dlp->d_magic == DISKMAGIC32 && 336 dlp->d_magic2 == DISKMAGIC32 && dkcksum32(dlp) == 0) { 337 *dlp = *lp; 338 lpx.lab32 = dlp; 339 msg = l32_fixlabel(NULL, sp, lpx, TRUE); 340 if (msg) { 341 error = EINVAL; 342 } else { 343 bp->b_cmd = BUF_CMD_WRITE; 344 bp->b_bio1.bio_done = biodone_sync; 345 bp->b_bio1.bio_flags |= BIO_SYNC; 346 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 347 dev_dstrategy(dev, &bp->b_bio1); 348 error = biowait(&bp->b_bio1, "labwr"); 349 } 350 goto done; 351 } 352 } 353 error = ESRCH; 354 done: 355 #else 356 bzero(bp->b_data, lp->d_secsize); 357 dlp = (struct disklabel32 *)bp->b_data; 358 *dlp = *lp; 359 bp->b_flags &= ~B_INVAL; 360 bp->b_cmd = BUF_CMD_WRITE; 361 bp->b_bio1.bio_done = biodone_sync; 362 bp->b_bio1.bio_flags |= BIO_SYNC; 363 BUF_STRATEGY(bp, 1); 364 error = biowait(&bp->b_bio1, "labwr"); 365 #endif 366 bp->b_flags |= B_INVAL | B_AGE; 367 brelse(bp); 368 return (error); 369 } 370 371 /* 372 * Create a disklabel based on a disk_info structure, initializing 373 * the appropriate fields and creating a raw partition that covers the 374 * whole disk. 375 * 376 * If a diskslice is passed, the label is truncated to the slice 377 */ 378 static disklabel_t 379 l32_clone_label(struct disk_info *info, struct diskslice *sp) 380 { 381 struct disklabel32 *lp; 382 disklabel_t res; 383 384 lp = kmalloc(sizeof *lp, M_DEVBUF, M_WAITOK | M_ZERO); 385 lp->d_nsectors = info->d_secpertrack; 386 lp->d_ntracks = info->d_nheads; 387 lp->d_secpercyl = info->d_secpercyl; 388 lp->d_secsize = info->d_media_blksize; 389 390 if (sp) 391 lp->d_secperunit = (u_int)sp->ds_size; 392 else 393 lp->d_secperunit = (u_int)info->d_media_blocks; 394 395 if (lp->d_typename[0] == '\0') 396 strncpy(lp->d_typename, "amnesiac", sizeof(lp->d_typename)); 397 if (lp->d_packname[0] == '\0') 398 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 399 if (lp->d_nsectors == 0) 400 lp->d_nsectors = 32; 401 if (lp->d_ntracks == 0) 402 lp->d_ntracks = 64; 403 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 404 lp->d_ncylinders = lp->d_secperunit / lp->d_secpercyl; 405 if (lp->d_rpm == 0) 406 lp->d_rpm = 3600; 407 if (lp->d_interleave == 0) 408 lp->d_interleave = 1; 409 if (lp->d_npartitions < RAW_PART + 1) 410 lp->d_npartitions = MAXPARTITIONS32; 411 if (lp->d_bbsize == 0) 412 lp->d_bbsize = BBSIZE; 413 if (lp->d_sbsize == 0) 414 lp->d_sbsize = SBSIZE; 415 416 /* 417 * Used by various devices to create a compatibility slice which 418 * allows us to mount root from devices which do not have a 419 * disklabel. Particularly: CDs. 420 */ 421 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 422 if (info->d_dsflags & DSO_COMPATPARTA) { 423 lp->d_partitions[0].p_size = lp->d_secperunit; 424 lp->d_partitions[0].p_fstype = FS_OTHER; 425 } 426 lp->d_magic = DISKMAGIC32; 427 lp->d_magic2 = DISKMAGIC32; 428 lp->d_checksum = dkcksum32(lp); 429 res.lab32 = lp; 430 return (res); 431 } 432 433 static void 434 l32_makevirginlabel(disklabel_t lpx, struct diskslices *ssp, 435 struct diskslice *sp, struct disk_info *info) 436 { 437 struct disklabel32 *lp = lpx.lab32; 438 struct partition32 *pp; 439 disklabel_t template; 440 441 template = l32_clone_label(info, NULL); 442 bcopy(template.opaque, lp, sizeof(struct disklabel32)); 443 444 lp->d_magic = DISKMAGIC32; 445 lp->d_magic2 = DISKMAGIC32; 446 447 lp->d_npartitions = MAXPARTITIONS32; 448 if (lp->d_interleave == 0) 449 lp->d_interleave = 1; 450 if (lp->d_rpm == 0) 451 lp->d_rpm = 3600; 452 if (lp->d_nsectors == 0) /* sectors per track */ 453 lp->d_nsectors = 32; 454 if (lp->d_ntracks == 0) /* heads */ 455 lp->d_ntracks = 64; 456 lp->d_ncylinders = 0; 457 lp->d_bbsize = BBSIZE; 458 lp->d_sbsize = SBSIZE; 459 460 /* 461 * If the slice or GPT partition is really small we could 462 * wind up with an absurd calculation for ncylinders. 463 */ 464 while (lp->d_ncylinders < 4) { 465 if (lp->d_ntracks > 1) 466 lp->d_ntracks >>= 1; 467 else if (lp->d_nsectors > 1) 468 lp->d_nsectors >>= 1; 469 else 470 break; 471 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 472 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 473 } 474 475 /* 476 * Set or Modify the partition sizes to accomodate the slice, 477 * since we started with a copy of the virgin label stored 478 * in the whole-disk-slice and we are probably not a 479 * whole-disk slice. 480 */ 481 lp->d_secperunit = sp->ds_size; 482 pp = &lp->d_partitions[RAW_PART]; 483 pp->p_offset = 0; 484 pp->p_size = lp->d_secperunit; 485 if (info->d_dsflags & DSO_COMPATPARTA) { 486 pp = &lp->d_partitions[0]; 487 pp->p_offset = 0; 488 pp->p_size = lp->d_secperunit; 489 pp->p_fstype = FS_OTHER; 490 } 491 lp->d_checksum = 0; 492 lp->d_checksum = dkcksum32(lp); 493 494 kfree(template.opaque, M_DEVBUF); 495 } 496 497 static const char * 498 l32_fixlabel(const char *sname, struct diskslice *sp, 499 disklabel_t lpx, int writeflag) 500 { 501 struct disklabel32 *lp; 502 struct partition32 *pp; 503 u_int64_t start; 504 u_int64_t end; 505 u_int64_t offset; 506 int part; 507 int warned; 508 509 lp = lpx.lab32; 510 511 /* These errors "can't happen" so don't bother reporting details. */ 512 if (lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32) 513 return ("fixlabel: invalid magic"); 514 if (dkcksum32(lp) != 0) 515 return ("fixlabel: invalid checksum"); 516 517 pp = &lp->d_partitions[RAW_PART]; 518 519 /* 520 * What a mess. For ages old backwards compatibility the disklabel 521 * on-disk stores absolute offsets instead of slice-relative offsets. 522 * So fix it up when reading, writing, or snooping. 523 * 524 * The in-core label is always slice-relative. 525 */ 526 if (writeflag) { 527 start = 0; 528 offset = sp->ds_offset; 529 } else { 530 start = sp->ds_offset; 531 offset = -sp->ds_offset; 532 } 533 if (pp->p_offset != start) { 534 if (sname != NULL) { 535 kprintf( 536 "%s: rejecting BSD label: raw partition offset != slice offset\n", 537 sname); 538 slice_info(sname, sp); 539 partition_info(sname, RAW_PART, pp); 540 } 541 return ("fixlabel: raw partition offset != slice offset"); 542 } 543 if (pp->p_size != sp->ds_size) { 544 if (sname != NULL) { 545 kprintf("%s: raw partition size != slice size\n", sname); 546 slice_info(sname, sp); 547 partition_info(sname, RAW_PART, pp); 548 } 549 if (pp->p_size > sp->ds_size) { 550 if (sname == NULL) 551 return ("fixlabel: raw partition size > slice size"); 552 kprintf("%s: truncating raw partition\n", sname); 553 pp->p_size = sp->ds_size; 554 } 555 } 556 end = start + sp->ds_size; 557 if (start > end) 558 return ("fixlabel: slice wraps"); 559 if (lp->d_secpercyl <= 0) 560 return ("fixlabel: d_secpercyl <= 0"); 561 pp -= RAW_PART; 562 warned = FALSE; 563 for (part = 0; part < lp->d_npartitions; part++, pp++) { 564 if (pp->p_offset != 0 || pp->p_size != 0) { 565 if (pp->p_offset < start 566 || pp->p_offset + pp->p_size > end 567 || pp->p_offset + pp->p_size < pp->p_offset) { 568 if (sname != NULL) { 569 kprintf( 570 "%s: rejecting partition in BSD label: it isn't entirely within the slice\n", 571 sname); 572 if (!warned) { 573 slice_info(sname, sp); 574 warned = TRUE; 575 } 576 partition_info(sname, part, pp); 577 } 578 /* XXX else silently discard junk. */ 579 bzero(pp, sizeof *pp); 580 } else { 581 pp->p_offset += offset; 582 } 583 } 584 } 585 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 586 lp->d_secperunit = sp->ds_size; 587 lp->d_checksum = 0; 588 lp->d_checksum = dkcksum32(lp); 589 return (NULL); 590 } 591 592 /* 593 * Set the number of blocks at the beginning of the slice which have 594 * been reserved for label operations. This area will be write-protected 595 * when accessed via the slice. 596 */ 597 static void 598 l32_adjust_label_reserved(struct diskslices *ssp, int slice, 599 struct diskslice *sp) 600 { 601 /*struct disklabel32 *lp = sp->ds_label.lab32;*/ 602 sp->ds_reserved = SBSIZE / ssp->dss_secsize; 603 } 604 605 static void 606 partition_info(const char *sname, int part, struct partition32 *pp) 607 { 608 kprintf("%s%c: start %lu, end %lu, size %lu\n", sname, 'a' + part, 609 (u_long)pp->p_offset, (u_long)(pp->p_offset + pp->p_size - 1), 610 (u_long)pp->p_size); 611 } 612 613 static void 614 slice_info(const char *sname, struct diskslice *sp) 615 { 616 kprintf("%s: start %llu, end %llu, size %llu\n", sname, 617 (long long)sp->ds_offset, 618 (long long)sp->ds_offset + sp->ds_size - 1, 619 (long long)sp->ds_size); 620 } 621 622 struct disklabel_ops disklabel32_ops = { 623 .labelsize = sizeof(struct disklabel32), 624 .op_readdisklabel = l32_readdisklabel, 625 .op_setdisklabel = l32_setdisklabel, 626 .op_writedisklabel = l32_writedisklabel, 627 .op_clone_label = l32_clone_label, 628 .op_adjust_label_reserved = l32_adjust_label_reserved, 629 .op_getpartbounds = l32_getpartbounds, 630 .op_loadpartinfo = l32_loadpartinfo, 631 .op_getnumparts = l32_getnumparts, 632 .op_makevirginlabel = l32_makevirginlabel, 633 .op_freedisklabel = l32_freedisklabel 634 }; 635
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