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 int 159 l32_getpackname(disklabel_t lp, char *buf, size_t bytes) 160 { 161 size_t slen; 162 163 if (lp.lab32->d_packname[0] == 0) { 164 buf[0] = 0; 165 return -1; 166 } 167 slen = strnlen(lp.lab32->d_packname, sizeof(lp.lab32->d_packname)); 168 if (slen >= bytes) 169 slen = bytes - 1; 170 bcopy(lp.lab32->d_packname, buf, slen); 171 buf[slen] = 0; 172 173 return 0; 174 } 175 176 static void 177 l32_freedisklabel(disklabel_t *lpp) 178 { 179 kfree((*lpp).lab32, M_DEVBUF); 180 (*lpp).lab32 = NULL; 181 } 182 183 /* 184 * Attempt to read a disk label from a device. 185 * 186 * Returns NULL on sucess, and an error string on failure 187 */ 188 static const char * 189 l32_readdisklabel(cdev_t dev, struct diskslice *sp, disklabel_t *lpp, 190 struct disk_info *info) 191 { 192 disklabel_t lpx; 193 struct buf *bp; 194 struct disklabel32 *dlp; 195 const char *msg = NULL; 196 int secsize = info->d_media_blksize; 197 198 bp = getpbuf_mem(NULL); 199 KKASSERT(secsize <= bp->b_bufsize); 200 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * secsize; 201 bp->b_bio1.bio_done = biodone_sync; 202 bp->b_bio1.bio_flags |= BIO_SYNC; 203 bp->b_bcount = secsize; 204 bp->b_flags &= ~B_INVAL; 205 bp->b_cmd = BUF_CMD_READ; 206 bp->b_flags |= B_FAILONDIS; 207 dev_dstrategy(dev, &bp->b_bio1); 208 if (biowait(&bp->b_bio1, "labrd")) 209 msg = "I/O error"; 210 else for (dlp = (struct disklabel32 *)bp->b_data; 211 dlp <= (struct disklabel32 *)((char *)bp->b_data + 212 secsize - sizeof(*dlp)); 213 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 214 if (dlp->d_magic != DISKMAGIC32 || 215 dlp->d_magic2 != DISKMAGIC32) { 216 /* 217 * NOTE! dsreadandsetlabel() does a strcmp() on 218 * this string. 219 */ 220 if (msg == NULL) 221 msg = "no disk label"; 222 } else if (dlp->d_npartitions > MAXPARTITIONS32 || 223 dkcksum32(dlp) != 0) { 224 msg = "disk label corrupted"; 225 } else { 226 lpx.lab32 = dlp; 227 msg = l32_fixlabel(NULL, sp, lpx, FALSE); 228 if (msg == NULL) { 229 (*lpp).lab32 = kmalloc(sizeof(*dlp), 230 M_DEVBUF, M_WAITOK|M_ZERO); 231 *(*lpp).lab32 = *dlp; 232 } 233 break; 234 } 235 } 236 bp->b_flags |= B_INVAL | B_AGE; 237 relpbuf(bp, NULL); 238 239 return (msg); 240 } 241 242 /* 243 * Check new disk label for sensibility before setting it. 244 */ 245 static int 246 l32_setdisklabel(disklabel_t olpx, disklabel_t nlpx, struct diskslices *ssp, 247 struct diskslice *sp, u_int32_t *openmask) 248 { 249 struct disklabel32 *olp, *nlp; 250 struct partition32 *opp, *npp; 251 int part; 252 int i; 253 254 olp = olpx.lab32; 255 nlp = nlpx.lab32; 256 257 /* 258 * Check it is actually a disklabel we are looking at. 259 */ 260 if (nlp->d_magic != DISKMAGIC32 || nlp->d_magic2 != DISKMAGIC32 || 261 dkcksum32(nlp) != 0) 262 return (EINVAL); 263 264 /* 265 * For each partition that we think is open, check the new disklabel 266 * for compatibility. Ignore special partitions (>= 128). 267 */ 268 i = 0; 269 while (i < 128) { 270 if (openmask[i >> 5] == 0) { 271 i += 32; 272 continue; 273 } 274 if ((openmask[i >> 5] & (1 << (i & 31))) == 0) { 275 ++i; 276 continue; 277 } 278 if (nlp->d_npartitions <= i) 279 return (EBUSY); 280 opp = &olp->d_partitions[i]; 281 npp = &nlp->d_partitions[i]; 282 if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size) 283 return (EBUSY); 284 /* 285 * Copy internally-set partition information 286 * if new label doesn't include it. XXX 287 * (If we are using it then we had better stay the same type) 288 * This is possibly dubious, as someone else noted (XXX) 289 */ 290 if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) { 291 npp->p_fstype = opp->p_fstype; 292 npp->p_fsize = opp->p_fsize; 293 npp->p_frag = opp->p_frag; 294 npp->p_cpg = opp->p_cpg; 295 } 296 ++i; 297 } 298 nlp->d_checksum = 0; 299 nlp->d_checksum = dkcksum32(nlp); 300 *olp = *nlp; 301 302 if (olp->d_partitions[RAW_PART].p_offset) 303 return (EXDEV); 304 if (olp->d_secperunit > sp->ds_size) 305 return (ENOSPC); 306 for (part = 0; part < olp->d_npartitions; ++part) { 307 if (olp->d_partitions[part].p_size > sp->ds_size) 308 return(ENOSPC); 309 } 310 return (0); 311 } 312 313 /* 314 * Write disk label back to device after modification. 315 */ 316 static int 317 l32_writedisklabel(cdev_t dev, struct diskslices *ssp, struct diskslice *sp, 318 disklabel_t lpx) 319 { 320 struct disklabel32 *lp; 321 struct disklabel32 *dlp; 322 struct buf *bp; 323 const char *msg; 324 int error = 0; 325 326 lp = lpx.lab32; 327 328 if (lp->d_partitions[RAW_PART].p_offset != 0) 329 return (EXDEV); /* not quite right */ 330 331 bp = getpbuf_mem(NULL); 332 KKASSERT((int)lp->d_secsize <= bp->b_bufsize); 333 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * lp->d_secsize; 334 bp->b_bio1.bio_done = biodone_sync; 335 bp->b_bio1.bio_flags |= BIO_SYNC; 336 bp->b_bcount = lp->d_secsize; 337 bp->b_flags |= B_FAILONDIS; 338 339 #if 1 340 /* 341 * We read the label first to see if it's there, 342 * in which case we will put ours at the same offset into the block.. 343 * (I think this is stupid [Julian]) 344 * Note that you can't write a label out over a corrupted label! 345 * (also stupid.. how do you write the first one? by raw writes?) 346 */ 347 bp->b_flags &= ~B_INVAL; 348 bp->b_cmd = BUF_CMD_READ; 349 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 350 dev_dstrategy(dev, &bp->b_bio1); 351 error = biowait(&bp->b_bio1, "labrd"); 352 if (error) 353 goto done; 354 for (dlp = (struct disklabel32 *)bp->b_data; 355 dlp <= (struct disklabel32 *) 356 ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp)); 357 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 358 if (dlp->d_magic == DISKMAGIC32 && 359 dlp->d_magic2 == DISKMAGIC32 && dkcksum32(dlp) == 0) { 360 *dlp = *lp; 361 lpx.lab32 = dlp; 362 msg = l32_fixlabel(NULL, sp, lpx, TRUE); 363 if (msg) { 364 error = EINVAL; 365 } else { 366 bp->b_cmd = BUF_CMD_WRITE; 367 bp->b_bio1.bio_done = biodone_sync; 368 bp->b_bio1.bio_flags |= BIO_SYNC; 369 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 370 dev_dstrategy(dev, &bp->b_bio1); 371 error = biowait(&bp->b_bio1, "labwr"); 372 } 373 goto done; 374 } 375 } 376 error = ESRCH; 377 done: 378 #else 379 bzero(bp->b_data, lp->d_secsize); 380 dlp = (struct disklabel32 *)bp->b_data; 381 *dlp = *lp; 382 bp->b_flags &= ~B_INVAL; 383 bp->b_cmd = BUF_CMD_WRITE; 384 bp->b_bio1.bio_done = biodone_sync; 385 bp->b_bio1.bio_flags |= BIO_SYNC; 386 BUF_STRATEGY(bp, 1); 387 error = biowait(&bp->b_bio1, "labwr"); 388 #endif 389 bp->b_flags |= B_INVAL | B_AGE; 390 relpbuf(bp, NULL); 391 392 return (error); 393 } 394 395 /* 396 * Create a disklabel based on a disk_info structure, initializing 397 * the appropriate fields and creating a raw partition that covers the 398 * whole disk. 399 * 400 * If a diskslice is passed, the label is truncated to the slice 401 */ 402 static disklabel_t 403 l32_clone_label(struct disk_info *info, struct diskslice *sp) 404 { 405 struct disklabel32 *lp; 406 disklabel_t res; 407 408 lp = kmalloc(sizeof *lp, M_DEVBUF, M_WAITOK | M_ZERO); 409 lp->d_nsectors = info->d_secpertrack; 410 lp->d_ntracks = info->d_nheads; 411 lp->d_secpercyl = info->d_secpercyl; 412 lp->d_secsize = info->d_media_blksize; 413 414 if (sp) 415 lp->d_secperunit = (u_int)sp->ds_size; 416 else 417 lp->d_secperunit = (u_int)info->d_media_blocks; 418 419 if (lp->d_typename[0] == '\0') 420 strncpy(lp->d_typename, "amnesiac", sizeof(lp->d_typename)); 421 if (lp->d_packname[0] == '\0') 422 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 423 if (lp->d_nsectors == 0) 424 lp->d_nsectors = 32; 425 if (lp->d_ntracks == 0) 426 lp->d_ntracks = 64; 427 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 428 lp->d_ncylinders = lp->d_secperunit / lp->d_secpercyl; 429 if (lp->d_rpm == 0) 430 lp->d_rpm = 3600; 431 if (lp->d_interleave == 0) 432 lp->d_interleave = 1; 433 if (lp->d_npartitions < RAW_PART + 1) 434 lp->d_npartitions = MAXPARTITIONS32; 435 if (lp->d_bbsize == 0) 436 lp->d_bbsize = BBSIZE; 437 if (lp->d_sbsize == 0) 438 lp->d_sbsize = SBSIZE; 439 440 /* 441 * Used by various devices to create a compatibility slice which 442 * allows us to mount root from devices which do not have a 443 * disklabel. Particularly: CDs. 444 */ 445 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 446 if (info->d_dsflags & DSO_COMPATPARTA) { 447 lp->d_partitions[0].p_size = lp->d_secperunit; 448 lp->d_partitions[0].p_fstype = FS_OTHER; 449 } 450 lp->d_magic = DISKMAGIC32; 451 lp->d_magic2 = DISKMAGIC32; 452 lp->d_checksum = dkcksum32(lp); 453 res.lab32 = lp; 454 return (res); 455 } 456 457 static void 458 l32_makevirginlabel(disklabel_t lpx, struct diskslices *ssp, 459 struct diskslice *sp, struct disk_info *info) 460 { 461 struct disklabel32 *lp = lpx.lab32; 462 struct partition32 *pp; 463 disklabel_t template; 464 465 template = l32_clone_label(info, NULL); 466 bcopy(template.opaque, lp, sizeof(struct disklabel32)); 467 468 lp->d_magic = DISKMAGIC32; 469 lp->d_magic2 = DISKMAGIC32; 470 471 lp->d_npartitions = MAXPARTITIONS32; 472 if (lp->d_interleave == 0) 473 lp->d_interleave = 1; 474 if (lp->d_rpm == 0) 475 lp->d_rpm = 3600; 476 if (lp->d_nsectors == 0) /* sectors per track */ 477 lp->d_nsectors = 32; 478 if (lp->d_ntracks == 0) /* heads */ 479 lp->d_ntracks = 64; 480 lp->d_ncylinders = 0; 481 lp->d_bbsize = BBSIZE; 482 lp->d_sbsize = SBSIZE; 483 484 /* 485 * If the slice or GPT partition is really small we could 486 * wind up with an absurd calculation for ncylinders. 487 */ 488 while (lp->d_ncylinders < 4) { 489 if (lp->d_ntracks > 1) 490 lp->d_ntracks >>= 1; 491 else if (lp->d_nsectors > 1) 492 lp->d_nsectors >>= 1; 493 else 494 break; 495 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 496 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 497 } 498 499 /* 500 * Set or Modify the partition sizes to accomodate the slice, 501 * since we started with a copy of the virgin label stored 502 * in the whole-disk-slice and we are probably not a 503 * whole-disk slice. 504 */ 505 lp->d_secperunit = sp->ds_size; 506 pp = &lp->d_partitions[RAW_PART]; 507 pp->p_offset = 0; 508 pp->p_size = lp->d_secperunit; 509 if (info->d_dsflags & DSO_COMPATPARTA) { 510 pp = &lp->d_partitions[0]; 511 pp->p_offset = 0; 512 pp->p_size = lp->d_secperunit; 513 pp->p_fstype = FS_OTHER; 514 } 515 lp->d_checksum = 0; 516 lp->d_checksum = dkcksum32(lp); 517 518 kfree(template.opaque, M_DEVBUF); 519 } 520 521 static const char * 522 l32_fixlabel(const char *sname, struct diskslice *sp, 523 disklabel_t lpx, int writeflag) 524 { 525 struct disklabel32 *lp; 526 struct partition32 *pp; 527 u_int64_t start; 528 u_int64_t end; 529 u_int64_t offset; 530 int part; 531 int warned; 532 533 lp = lpx.lab32; 534 535 /* These errors "can't happen" so don't bother reporting details. */ 536 if (lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32) 537 return ("fixlabel: invalid magic"); 538 if (dkcksum32(lp) != 0) 539 return ("fixlabel: invalid checksum"); 540 541 pp = &lp->d_partitions[RAW_PART]; 542 543 /* 544 * What a mess. For ages old backwards compatibility the disklabel 545 * on-disk stores absolute offsets instead of slice-relative offsets. 546 * So fix it up when reading, writing, or snooping. 547 * 548 * The in-core label is always slice-relative. 549 */ 550 if (writeflag) { 551 start = 0; 552 offset = sp->ds_offset; 553 } else { 554 start = sp->ds_offset; 555 offset = -sp->ds_offset; 556 } 557 if (pp->p_offset != start) { 558 if (sname != NULL) { 559 kprintf( 560 "%s: rejecting BSD label: raw partition offset != slice offset\n", 561 sname); 562 slice_info(sname, sp); 563 partition_info(sname, RAW_PART, pp); 564 } 565 return ("fixlabel: raw partition offset != slice offset"); 566 } 567 if (pp->p_size != sp->ds_size) { 568 if (sname != NULL) { 569 kprintf("%s: raw partition size != slice size\n", sname); 570 slice_info(sname, sp); 571 partition_info(sname, RAW_PART, pp); 572 } 573 if (pp->p_size > sp->ds_size) { 574 if (sname == NULL) 575 return ("fixlabel: raw partition size > slice size"); 576 kprintf("%s: truncating raw partition\n", sname); 577 pp->p_size = sp->ds_size; 578 } 579 } 580 end = start + sp->ds_size; 581 if (start > end) 582 return ("fixlabel: slice wraps"); 583 if (lp->d_secpercyl <= 0) 584 return ("fixlabel: d_secpercyl <= 0"); 585 pp -= RAW_PART; 586 warned = FALSE; 587 for (part = 0; part < lp->d_npartitions; part++, pp++) { 588 if (pp->p_offset != 0 || pp->p_size != 0) { 589 if (pp->p_offset < start 590 || pp->p_offset + pp->p_size > end 591 || pp->p_offset + pp->p_size < pp->p_offset) { 592 if (sname != NULL) { 593 kprintf( 594 "%s: rejecting partition in BSD label: it isn't entirely within the slice\n", 595 sname); 596 if (!warned) { 597 slice_info(sname, sp); 598 warned = TRUE; 599 } 600 partition_info(sname, part, pp); 601 } 602 /* XXX else silently discard junk. */ 603 bzero(pp, sizeof *pp); 604 } else { 605 pp->p_offset += offset; 606 } 607 } 608 } 609 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 610 lp->d_secperunit = sp->ds_size; 611 lp->d_checksum = 0; 612 lp->d_checksum = dkcksum32(lp); 613 return (NULL); 614 } 615 616 /* 617 * Set the number of blocks at the beginning of the slice which have 618 * been reserved for label operations. This area will be write-protected 619 * when accessed via the slice. 620 */ 621 static void 622 l32_adjust_label_reserved(struct diskslices *ssp, int slice, 623 struct diskslice *sp) 624 { 625 /*struct disklabel32 *lp = sp->ds_label.lab32;*/ 626 sp->ds_reserved = SBSIZE / ssp->dss_secsize; 627 } 628 629 static void 630 partition_info(const char *sname, int part, struct partition32 *pp) 631 { 632 kprintf("%s%c: start %lu, end %lu, size %lu\n", sname, 'a' + part, 633 (u_long)pp->p_offset, (u_long)(pp->p_offset + pp->p_size - 1), 634 (u_long)pp->p_size); 635 } 636 637 static void 638 slice_info(const char *sname, struct diskslice *sp) 639 { 640 kprintf("%s: start %llu, end %llu, size %llu\n", sname, 641 (long long)sp->ds_offset, 642 (long long)sp->ds_offset + sp->ds_size - 1, 643 (long long)sp->ds_size); 644 } 645 646 struct disklabel_ops disklabel32_ops = { 647 .labelsize = sizeof(struct disklabel32), 648 .op_readdisklabel = l32_readdisklabel, 649 .op_setdisklabel = l32_setdisklabel, 650 .op_writedisklabel = l32_writedisklabel, 651 .op_clone_label = l32_clone_label, 652 .op_adjust_label_reserved = l32_adjust_label_reserved, 653 .op_getpartbounds = l32_getpartbounds, 654 .op_loadpartinfo = l32_loadpartinfo, 655 .op_getnumparts = l32_getnumparts, 656 .op_makevirginlabel = l32_makevirginlabel, 657 .op_getpackname = l32_getpackname, 658 .op_freedisklabel = l32_freedisklabel 659 }; 660 661