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 bp->b_flags |= B_FAILONDIS; 188 dev_dstrategy(dev, &bp->b_bio1); 189 if (biowait(&bp->b_bio1, "labrd")) 190 msg = "I/O error"; 191 else for (dlp = (struct disklabel32 *)bp->b_data; 192 dlp <= (struct disklabel32 *)((char *)bp->b_data + 193 secsize - sizeof(*dlp)); 194 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 195 if (dlp->d_magic != DISKMAGIC32 || 196 dlp->d_magic2 != DISKMAGIC32) { 197 /* 198 * NOTE! dsreadandsetlabel() does a strcmp() on 199 * this string. 200 */ 201 if (msg == NULL) 202 msg = "no disk label"; 203 } else if (dlp->d_npartitions > MAXPARTITIONS32 || 204 dkcksum32(dlp) != 0) { 205 msg = "disk label corrupted"; 206 } else { 207 lpx.lab32 = dlp; 208 msg = l32_fixlabel(NULL, sp, lpx, FALSE); 209 if (msg == NULL) { 210 (*lpp).lab32 = kmalloc(sizeof(*dlp), 211 M_DEVBUF, M_WAITOK|M_ZERO); 212 *(*lpp).lab32 = *dlp; 213 } 214 break; 215 } 216 } 217 bp->b_flags |= B_INVAL | B_AGE; 218 brelse(bp); 219 return (msg); 220 } 221 222 /* 223 * Check new disk label for sensibility before setting it. 224 */ 225 static int 226 l32_setdisklabel(disklabel_t olpx, disklabel_t nlpx, struct diskslices *ssp, 227 struct diskslice *sp, u_int32_t *openmask) 228 { 229 struct disklabel32 *olp, *nlp; 230 struct partition32 *opp, *npp; 231 int part; 232 int i; 233 234 olp = olpx.lab32; 235 nlp = nlpx.lab32; 236 237 /* 238 * Check it is actually a disklabel we are looking at. 239 */ 240 if (nlp->d_magic != DISKMAGIC32 || nlp->d_magic2 != DISKMAGIC32 || 241 dkcksum32(nlp) != 0) 242 return (EINVAL); 243 244 /* 245 * For each partition that we think is open, check the new disklabel 246 * for compatibility. Ignore special partitions (>= 128). 247 */ 248 i = 0; 249 while (i < 128) { 250 if (openmask[i >> 5] == 0) { 251 i += 32; 252 continue; 253 } 254 if ((openmask[i >> 5] & (1 << (i & 31))) == 0) { 255 ++i; 256 continue; 257 } 258 if (nlp->d_npartitions <= i) 259 return (EBUSY); 260 opp = &olp->d_partitions[i]; 261 npp = &nlp->d_partitions[i]; 262 if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size) 263 return (EBUSY); 264 /* 265 * Copy internally-set partition information 266 * if new label doesn't include it. XXX 267 * (If we are using it then we had better stay the same type) 268 * This is possibly dubious, as someone else noted (XXX) 269 */ 270 if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) { 271 npp->p_fstype = opp->p_fstype; 272 npp->p_fsize = opp->p_fsize; 273 npp->p_frag = opp->p_frag; 274 npp->p_cpg = opp->p_cpg; 275 } 276 ++i; 277 } 278 nlp->d_checksum = 0; 279 nlp->d_checksum = dkcksum32(nlp); 280 *olp = *nlp; 281 282 if (olp->d_partitions[RAW_PART].p_offset) 283 return (EXDEV); 284 if (olp->d_secperunit > sp->ds_size) 285 return (ENOSPC); 286 for (part = 0; part < olp->d_npartitions; ++part) { 287 if (olp->d_partitions[part].p_size > sp->ds_size) 288 return(ENOSPC); 289 } 290 return (0); 291 } 292 293 /* 294 * Write disk label back to device after modification. 295 */ 296 static int 297 l32_writedisklabel(cdev_t dev, struct diskslices *ssp, struct diskslice *sp, 298 disklabel_t lpx) 299 { 300 struct disklabel32 *lp; 301 struct disklabel32 *dlp; 302 struct buf *bp; 303 const char *msg; 304 int error = 0; 305 306 lp = lpx.lab32; 307 308 if (lp->d_partitions[RAW_PART].p_offset != 0) 309 return (EXDEV); /* not quite right */ 310 311 bp = geteblk((int)lp->d_secsize); 312 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * lp->d_secsize; 313 bp->b_bio1.bio_done = biodone_sync; 314 bp->b_bio1.bio_flags |= BIO_SYNC; 315 bp->b_bcount = lp->d_secsize; 316 bp->b_flags |= B_FAILONDIS; 317 318 #if 1 319 /* 320 * We read the label first to see if it's there, 321 * in which case we will put ours at the same offset into the block.. 322 * (I think this is stupid [Julian]) 323 * Note that you can't write a label out over a corrupted label! 324 * (also stupid.. how do you write the first one? by raw writes?) 325 */ 326 bp->b_flags &= ~B_INVAL; 327 bp->b_cmd = BUF_CMD_READ; 328 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 329 dev_dstrategy(dev, &bp->b_bio1); 330 error = biowait(&bp->b_bio1, "labrd"); 331 if (error) 332 goto done; 333 for (dlp = (struct disklabel32 *)bp->b_data; 334 dlp <= (struct disklabel32 *) 335 ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp)); 336 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 337 if (dlp->d_magic == DISKMAGIC32 && 338 dlp->d_magic2 == DISKMAGIC32 && dkcksum32(dlp) == 0) { 339 *dlp = *lp; 340 lpx.lab32 = dlp; 341 msg = l32_fixlabel(NULL, sp, lpx, TRUE); 342 if (msg) { 343 error = EINVAL; 344 } else { 345 bp->b_cmd = BUF_CMD_WRITE; 346 bp->b_bio1.bio_done = biodone_sync; 347 bp->b_bio1.bio_flags |= BIO_SYNC; 348 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 349 dev_dstrategy(dev, &bp->b_bio1); 350 error = biowait(&bp->b_bio1, "labwr"); 351 } 352 goto done; 353 } 354 } 355 error = ESRCH; 356 done: 357 #else 358 bzero(bp->b_data, lp->d_secsize); 359 dlp = (struct disklabel32 *)bp->b_data; 360 *dlp = *lp; 361 bp->b_flags &= ~B_INVAL; 362 bp->b_cmd = BUF_CMD_WRITE; 363 bp->b_bio1.bio_done = biodone_sync; 364 bp->b_bio1.bio_flags |= BIO_SYNC; 365 BUF_STRATEGY(bp, 1); 366 error = biowait(&bp->b_bio1, "labwr"); 367 #endif 368 bp->b_flags |= B_INVAL | B_AGE; 369 brelse(bp); 370 return (error); 371 } 372 373 /* 374 * Create a disklabel based on a disk_info structure, initializing 375 * the appropriate fields and creating a raw partition that covers the 376 * whole disk. 377 * 378 * If a diskslice is passed, the label is truncated to the slice 379 */ 380 static disklabel_t 381 l32_clone_label(struct disk_info *info, struct diskslice *sp) 382 { 383 struct disklabel32 *lp; 384 disklabel_t res; 385 386 lp = kmalloc(sizeof *lp, M_DEVBUF, M_WAITOK | M_ZERO); 387 lp->d_nsectors = info->d_secpertrack; 388 lp->d_ntracks = info->d_nheads; 389 lp->d_secpercyl = info->d_secpercyl; 390 lp->d_secsize = info->d_media_blksize; 391 392 if (sp) 393 lp->d_secperunit = (u_int)sp->ds_size; 394 else 395 lp->d_secperunit = (u_int)info->d_media_blocks; 396 397 if (lp->d_typename[0] == '\0') 398 strncpy(lp->d_typename, "amnesiac", sizeof(lp->d_typename)); 399 if (lp->d_packname[0] == '\0') 400 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 401 if (lp->d_nsectors == 0) 402 lp->d_nsectors = 32; 403 if (lp->d_ntracks == 0) 404 lp->d_ntracks = 64; 405 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 406 lp->d_ncylinders = lp->d_secperunit / lp->d_secpercyl; 407 if (lp->d_rpm == 0) 408 lp->d_rpm = 3600; 409 if (lp->d_interleave == 0) 410 lp->d_interleave = 1; 411 if (lp->d_npartitions < RAW_PART + 1) 412 lp->d_npartitions = MAXPARTITIONS32; 413 if (lp->d_bbsize == 0) 414 lp->d_bbsize = BBSIZE; 415 if (lp->d_sbsize == 0) 416 lp->d_sbsize = SBSIZE; 417 418 /* 419 * Used by various devices to create a compatibility slice which 420 * allows us to mount root from devices which do not have a 421 * disklabel. Particularly: CDs. 422 */ 423 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 424 if (info->d_dsflags & DSO_COMPATPARTA) { 425 lp->d_partitions[0].p_size = lp->d_secperunit; 426 lp->d_partitions[0].p_fstype = FS_OTHER; 427 } 428 lp->d_magic = DISKMAGIC32; 429 lp->d_magic2 = DISKMAGIC32; 430 lp->d_checksum = dkcksum32(lp); 431 res.lab32 = lp; 432 return (res); 433 } 434 435 static void 436 l32_makevirginlabel(disklabel_t lpx, struct diskslices *ssp, 437 struct diskslice *sp, struct disk_info *info) 438 { 439 struct disklabel32 *lp = lpx.lab32; 440 struct partition32 *pp; 441 disklabel_t template; 442 443 template = l32_clone_label(info, NULL); 444 bcopy(template.opaque, lp, sizeof(struct disklabel32)); 445 446 lp->d_magic = DISKMAGIC32; 447 lp->d_magic2 = DISKMAGIC32; 448 449 lp->d_npartitions = MAXPARTITIONS32; 450 if (lp->d_interleave == 0) 451 lp->d_interleave = 1; 452 if (lp->d_rpm == 0) 453 lp->d_rpm = 3600; 454 if (lp->d_nsectors == 0) /* sectors per track */ 455 lp->d_nsectors = 32; 456 if (lp->d_ntracks == 0) /* heads */ 457 lp->d_ntracks = 64; 458 lp->d_ncylinders = 0; 459 lp->d_bbsize = BBSIZE; 460 lp->d_sbsize = SBSIZE; 461 462 /* 463 * If the slice or GPT partition is really small we could 464 * wind up with an absurd calculation for ncylinders. 465 */ 466 while (lp->d_ncylinders < 4) { 467 if (lp->d_ntracks > 1) 468 lp->d_ntracks >>= 1; 469 else if (lp->d_nsectors > 1) 470 lp->d_nsectors >>= 1; 471 else 472 break; 473 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 474 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 475 } 476 477 /* 478 * Set or Modify the partition sizes to accomodate the slice, 479 * since we started with a copy of the virgin label stored 480 * in the whole-disk-slice and we are probably not a 481 * whole-disk slice. 482 */ 483 lp->d_secperunit = sp->ds_size; 484 pp = &lp->d_partitions[RAW_PART]; 485 pp->p_offset = 0; 486 pp->p_size = lp->d_secperunit; 487 if (info->d_dsflags & DSO_COMPATPARTA) { 488 pp = &lp->d_partitions[0]; 489 pp->p_offset = 0; 490 pp->p_size = lp->d_secperunit; 491 pp->p_fstype = FS_OTHER; 492 } 493 lp->d_checksum = 0; 494 lp->d_checksum = dkcksum32(lp); 495 496 kfree(template.opaque, M_DEVBUF); 497 } 498 499 static const char * 500 l32_fixlabel(const char *sname, struct diskslice *sp, 501 disklabel_t lpx, int writeflag) 502 { 503 struct disklabel32 *lp; 504 struct partition32 *pp; 505 u_int64_t start; 506 u_int64_t end; 507 u_int64_t offset; 508 int part; 509 int warned; 510 511 lp = lpx.lab32; 512 513 /* These errors "can't happen" so don't bother reporting details. */ 514 if (lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32) 515 return ("fixlabel: invalid magic"); 516 if (dkcksum32(lp) != 0) 517 return ("fixlabel: invalid checksum"); 518 519 pp = &lp->d_partitions[RAW_PART]; 520 521 /* 522 * What a mess. For ages old backwards compatibility the disklabel 523 * on-disk stores absolute offsets instead of slice-relative offsets. 524 * So fix it up when reading, writing, or snooping. 525 * 526 * The in-core label is always slice-relative. 527 */ 528 if (writeflag) { 529 start = 0; 530 offset = sp->ds_offset; 531 } else { 532 start = sp->ds_offset; 533 offset = -sp->ds_offset; 534 } 535 if (pp->p_offset != start) { 536 if (sname != NULL) { 537 kprintf( 538 "%s: rejecting BSD label: raw partition offset != slice offset\n", 539 sname); 540 slice_info(sname, sp); 541 partition_info(sname, RAW_PART, pp); 542 } 543 return ("fixlabel: raw partition offset != slice offset"); 544 } 545 if (pp->p_size != sp->ds_size) { 546 if (sname != NULL) { 547 kprintf("%s: raw partition size != slice size\n", sname); 548 slice_info(sname, sp); 549 partition_info(sname, RAW_PART, pp); 550 } 551 if (pp->p_size > sp->ds_size) { 552 if (sname == NULL) 553 return ("fixlabel: raw partition size > slice size"); 554 kprintf("%s: truncating raw partition\n", sname); 555 pp->p_size = sp->ds_size; 556 } 557 } 558 end = start + sp->ds_size; 559 if (start > end) 560 return ("fixlabel: slice wraps"); 561 if (lp->d_secpercyl <= 0) 562 return ("fixlabel: d_secpercyl <= 0"); 563 pp -= RAW_PART; 564 warned = FALSE; 565 for (part = 0; part < lp->d_npartitions; part++, pp++) { 566 if (pp->p_offset != 0 || pp->p_size != 0) { 567 if (pp->p_offset < start 568 || pp->p_offset + pp->p_size > end 569 || pp->p_offset + pp->p_size < pp->p_offset) { 570 if (sname != NULL) { 571 kprintf( 572 "%s: rejecting partition in BSD label: it isn't entirely within the slice\n", 573 sname); 574 if (!warned) { 575 slice_info(sname, sp); 576 warned = TRUE; 577 } 578 partition_info(sname, part, pp); 579 } 580 /* XXX else silently discard junk. */ 581 bzero(pp, sizeof *pp); 582 } else { 583 pp->p_offset += offset; 584 } 585 } 586 } 587 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 588 lp->d_secperunit = sp->ds_size; 589 lp->d_checksum = 0; 590 lp->d_checksum = dkcksum32(lp); 591 return (NULL); 592 } 593 594 /* 595 * Set the number of blocks at the beginning of the slice which have 596 * been reserved for label operations. This area will be write-protected 597 * when accessed via the slice. 598 */ 599 static void 600 l32_adjust_label_reserved(struct diskslices *ssp, int slice, 601 struct diskslice *sp) 602 { 603 /*struct disklabel32 *lp = sp->ds_label.lab32;*/ 604 sp->ds_reserved = SBSIZE / ssp->dss_secsize; 605 } 606 607 static void 608 partition_info(const char *sname, int part, struct partition32 *pp) 609 { 610 kprintf("%s%c: start %lu, end %lu, size %lu\n", sname, 'a' + part, 611 (u_long)pp->p_offset, (u_long)(pp->p_offset + pp->p_size - 1), 612 (u_long)pp->p_size); 613 } 614 615 static void 616 slice_info(const char *sname, struct diskslice *sp) 617 { 618 kprintf("%s: start %llu, end %llu, size %llu\n", sname, 619 (long long)sp->ds_offset, 620 (long long)sp->ds_offset + sp->ds_size - 1, 621 (long long)sp->ds_size); 622 } 623 624 struct disklabel_ops disklabel32_ops = { 625 .labelsize = sizeof(struct disklabel32), 626 .op_readdisklabel = l32_readdisklabel, 627 .op_setdisklabel = l32_setdisklabel, 628 .op_writedisklabel = l32_writedisklabel, 629 .op_clone_label = l32_clone_label, 630 .op_adjust_label_reserved = l32_adjust_label_reserved, 631 .op_getpartbounds = l32_getpartbounds, 632 .op_loadpartinfo = l32_loadpartinfo, 633 .op_getnumparts = l32_getnumparts, 634 .op_makevirginlabel = l32_makevirginlabel, 635 .op_freedisklabel = l32_freedisklabel 636 }; 637 638