1 /* $NetBSD: biosdisk.c,v 1.61 2024/01/06 21:26:43 mlelstv Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1998 5 * Matthias Drochner. All rights reserved. 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 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 /* 30 * raw BIOS disk device for libsa. 31 * needs lowlevel parts from bios_disk.S and biosdisk_ll.c 32 * partly from netbsd:sys/arch/i386/boot/disk.c 33 * no bad144 handling! 34 * 35 * A lot of this must match sys/kern/subr_disk_mbr.c 36 */ 37 38 /* 39 * Ported to boot 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992 40 * 41 * Mach Operating System 42 * Copyright (c) 1992, 1991 Carnegie Mellon University 43 * All Rights Reserved. 44 * 45 * Permission to use, copy, modify and distribute this software and its 46 * documentation is hereby granted, provided that both the copyright 47 * notice and this permission notice appear in all copies of the 48 * software, derivative works or modified versions, and any portions 49 * thereof, and that both notices appear in supporting documentation. 50 * 51 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 52 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 53 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 54 * 55 * Carnegie Mellon requests users of this software to return to 56 * 57 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 58 * School of Computer Science 59 * Carnegie Mellon University 60 * Pittsburgh PA 15213-3890 61 * 62 * any improvements or extensions that they make and grant Carnegie Mellon 63 * the rights to redistribute these changes. 64 */ 65 66 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 67 #define FSTYPENAMES 68 #endif 69 70 #include <lib/libkern/libkern.h> 71 #include <lib/libsa/stand.h> 72 73 #include <sys/types.h> 74 #include <sys/md5.h> 75 #include <sys/param.h> 76 #include <sys/disklabel.h> 77 #include <sys/disklabel_gpt.h> 78 #include <sys/uuid.h> 79 80 #include <fs/cd9660/iso.h> 81 #include <fs/unicode.h> 82 83 #include <lib/libsa/saerrno.h> 84 #include <machine/cpu.h> 85 86 #include "libi386.h" 87 #include "biosdisk_ll.h" 88 #include "biosdisk.h" 89 #ifdef _STANDALONE 90 #include "bootinfo.h" 91 #endif 92 93 #ifndef NO_GPT 94 #define MAXDEVNAME 39 /* "NAME=" + 34 char part_name */ 95 #else 96 #define MAXDEVNAME 16 97 #endif 98 99 #ifndef BIOSDISK_BUFSIZE 100 #define BIOSDISK_BUFSIZE 2048 /* must be large enough for a CD sector */ 101 #endif 102 103 #define BIOSDISKNPART 26 104 105 struct biosdisk { 106 struct biosdisk_ll ll; 107 daddr_t boff; 108 daddr_t size; 109 char buf[BIOSDISK_BUFSIZE]; 110 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 111 struct biosdisk_partition part[BIOSDISKNPART]; 112 #endif 113 }; 114 115 #include <dev/raidframe/raidframevar.h> 116 #define RF_COMPONENT_INFO_OFFSET 16384 /* from sys/dev/raidframe/rf_netbsdkintf.c */ 117 #define RF_COMPONENT_LABEL_VERSION 2 /* from <dev/raidframe/rf_raid.h> */ 118 119 #define RAIDFRAME_NDEV 16 /* abitrary limit to 15 raidframe devices */ 120 struct raidframe { 121 int last_unit; 122 int serial; 123 int biosdev; 124 int parent_part; 125 #ifndef NO_GPT 126 char parent_name[MAXDEVNAME + 1]; 127 #endif 128 daddr_t offset; 129 daddr_t size; 130 }; 131 132 133 #ifndef NO_GPT 134 const struct uuid GET_nbsd_raid = GPT_ENT_TYPE_NETBSD_RAIDFRAME; 135 const struct uuid GET_nbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS; 136 const struct uuid GET_nbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS; 137 const struct uuid GET_nbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP; 138 const struct uuid GET_nbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD; 139 const struct uuid GET_nbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD; 140 141 const struct uuid GET_efi = GPT_ENT_TYPE_EFI; 142 const struct uuid GET_mbr = GPT_ENT_TYPE_MBR; 143 const struct uuid GET_fbsd = GPT_ENT_TYPE_FREEBSD; 144 const struct uuid GET_fbsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP; 145 const struct uuid GET_fbsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS; 146 const struct uuid GET_fbsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM; 147 const struct uuid GET_fbsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS; 148 const struct uuid GET_ms_rsvd = GPT_ENT_TYPE_MS_RESERVED; 149 const struct uuid GET_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA; 150 const struct uuid GET_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA; 151 const struct uuid GET_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA; 152 const struct uuid GET_linux_data = GPT_ENT_TYPE_LINUX_DATA; 153 const struct uuid GET_linux_raid = GPT_ENT_TYPE_LINUX_RAID; 154 const struct uuid GET_linux_swap = GPT_ENT_TYPE_LINUX_SWAP; 155 const struct uuid GET_linux_lvm = GPT_ENT_TYPE_LINUX_LVM; 156 const struct uuid GET_apple_hfs = GPT_ENT_TYPE_APPLE_HFS; 157 const struct uuid GET_apple_ufs = GPT_ENT_TYPE_APPLE_UFS; 158 const struct uuid GET_bios = GPT_ENT_TYPE_BIOS; 159 160 const struct gpt_part gpt_parts[] = { 161 { &GET_nbsd_raid, "NetBSD RAID" }, 162 { &GET_nbsd_ffs, "NetBSD FFS" }, 163 { &GET_nbsd_lfs, "NetBSD LFS" }, 164 { &GET_nbsd_swap, "NetBSD Swap" }, 165 { &GET_nbsd_ccd, "NetBSD ccd" }, 166 { &GET_nbsd_cgd, "NetBSD cgd" }, 167 { &GET_efi, "EFI System" }, 168 { &GET_mbr, "MBR" }, 169 { &GET_fbsd, "FreeBSD" }, 170 { &GET_fbsd_swap, "FreeBSD Swap" }, 171 { &GET_fbsd_ufs, "FreeBSD UFS" }, 172 { &GET_fbsd_vinum, "FreeBSD Vinum" }, 173 { &GET_fbsd_zfs, "FreeBSD ZFS" }, 174 { &GET_ms_rsvd, "Microsoft Reserved" }, 175 { &GET_ms_basic_data, "Microsoft Basic data" }, 176 { &GET_ms_ldm_metadata, "Microsoft LDM metadata" }, 177 { &GET_ms_ldm_data, "Microsoft LDM data" }, 178 { &GET_linux_data, "Linux data" }, 179 { &GET_linux_raid, "Linux RAID" }, 180 { &GET_linux_swap, "Linux Swap" }, 181 { &GET_linux_lvm, "Linux LVM" }, 182 { &GET_apple_hfs, "Apple HFS" }, 183 { &GET_apple_ufs, "Apple UFS" }, 184 { &GET_bios, "BIOS Boot (GRUB)" }, 185 }; 186 #endif /* NO_GPT */ 187 188 struct btinfo_bootdisk bi_disk; 189 struct btinfo_bootwedge bi_wedge; 190 struct btinfo_rootdevice bi_root; 191 192 #define MBR_PARTS(buf) ((char *)(buf) + offsetof(struct mbr_sector, mbr_parts)) 193 194 #ifndef devb2cdb 195 #define devb2cdb(bno) (((bno) * DEV_BSIZE) / ISO_DEFAULT_BLOCK_SIZE) 196 #endif 197 198 static void 199 dealloc_biosdisk(struct biosdisk *d) 200 { 201 #ifndef NO_GPT 202 int i; 203 204 for (i = 0; i < __arraycount(d->part); i++) { 205 if (d->part[i].part_name != NULL) 206 dealloc(d->part[i].part_name, BIOSDISK_PART_NAME_LEN); 207 } 208 #endif 209 210 dealloc(d, sizeof(*d)); 211 212 return; 213 } 214 215 static struct biosdisk_partition * 216 copy_biosdisk_part(struct biosdisk *d) 217 { 218 struct biosdisk_partition *part; 219 220 part = alloc(sizeof(d->part)); 221 if (part == NULL) 222 goto out; 223 224 memcpy(part, d->part, sizeof(d->part)); 225 226 #ifndef NO_GPT 227 int i; 228 229 for (i = 0; i < __arraycount(d->part); i++) { 230 if (d->part[i].part_name != NULL) { 231 part[i].part_name = alloc(BIOSDISK_PART_NAME_LEN); 232 memcpy(part[i].part_name, d->part[i].part_name, 233 BIOSDISK_PART_NAME_LEN); 234 } 235 } 236 #endif 237 238 out: 239 return part; 240 } 241 242 int 243 biosdisk_strategy(void *devdata, int flag, daddr_t dblk, size_t size, 244 void *buf, size_t *rsize) 245 { 246 struct biosdisk *d; 247 int blks, frag; 248 249 if (flag != F_READ) 250 return EROFS; 251 252 d = (struct biosdisk *) devdata; 253 254 if (d->ll.type == BIOSDISK_TYPE_CD) 255 dblk = devb2cdb(dblk); 256 257 dblk += d->boff; 258 259 blks = size / d->ll.secsize; 260 if (blks && readsects(&d->ll, dblk, blks, buf, 0)) { 261 if (rsize) 262 *rsize = 0; 263 return EIO; 264 } 265 266 /* needed for CD */ 267 frag = size % d->ll.secsize; 268 if (frag) { 269 if (readsects(&d->ll, dblk + blks, 1, d->buf, 0)) { 270 if (rsize) 271 *rsize = blks * d->ll.secsize; 272 return EIO; 273 } 274 memcpy(buf + blks * d->ll.secsize, d->buf, frag); 275 } 276 277 if (rsize) 278 *rsize = size; 279 return 0; 280 } 281 282 static struct biosdisk * 283 alloc_biosdisk(int biosdev) 284 { 285 struct biosdisk *d; 286 287 d = alloc(sizeof(*d)); 288 if (d == NULL) 289 return NULL; 290 memset(d, 0, sizeof(*d)); 291 292 d->ll.dev = biosdev; 293 if (set_geometry(&d->ll, NULL)) { 294 #ifdef DISK_DEBUG 295 printf("no geometry information\n"); 296 #endif 297 dealloc_biosdisk(d); 298 return NULL; 299 } 300 return d; 301 } 302 303 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 304 static void 305 md5(void *hash, const void *data, size_t len) 306 { 307 MD5_CTX ctx; 308 309 MD5Init(&ctx); 310 MD5Update(&ctx, data, len); 311 MD5Final(hash, &ctx); 312 313 return; 314 } 315 #endif 316 317 #ifndef NO_GPT 318 bool 319 guid_is_nil(const struct uuid *u) 320 { 321 static const struct uuid nil = { .time_low = 0 }; 322 return (memcmp(u, &nil, sizeof(*u)) == 0 ? true : false); 323 } 324 325 bool 326 guid_is_equal(const struct uuid *a, const struct uuid *b) 327 { 328 return (memcmp(a, b, sizeof(*a)) == 0 ? true : false); 329 } 330 331 static void 332 part_name_utf8(const uint16_t *utf16_src, size_t utf16_srclen, 333 char *utf8_dst, size_t utf8_dstlen) 334 { 335 char *c = utf8_dst; 336 size_t r = utf8_dstlen - 1; 337 size_t n; 338 int j; 339 340 if (utf8_dst == NULL) 341 return; 342 343 for (j = 0; j < utf16_srclen && utf16_src[j] != 0x0000; j++) { 344 n = wput_utf8(c, r, le16toh(utf16_src[j])); 345 if (n == 0) 346 break; 347 c += n; r -= n; 348 } 349 *c = '\0'; 350 351 return; 352 } 353 354 static int 355 check_gpt(struct biosdisk *d, daddr_t rf_offset, daddr_t sector) 356 { 357 struct gpt_hdr gpth; 358 const struct gpt_ent *ep; 359 const struct uuid *u; 360 daddr_t entblk; 361 size_t size; 362 uint32_t crc; 363 int sectors; 364 int entries; 365 int entry; 366 int i, j; 367 368 /* read in gpt_hdr sector */ 369 if (readsects(&d->ll, sector, 1, d->buf, 1)) { 370 #ifdef DISK_DEBUG 371 printf("Error reading GPT header at %"PRId64"\n", sector); 372 #endif 373 return EIO; 374 } 375 376 memcpy(&gpth, d->buf, sizeof(gpth)); 377 378 if (memcmp(GPT_HDR_SIG, gpth.hdr_sig, sizeof(gpth.hdr_sig))) 379 return -1; 380 381 crc = gpth.hdr_crc_self; 382 gpth.hdr_crc_self = 0; 383 gpth.hdr_crc_self = crc32(0, (const void *)&gpth, GPT_HDR_SIZE); 384 if (gpth.hdr_crc_self != crc) { 385 return -1; 386 } 387 388 if (gpth.hdr_lba_self + rf_offset != sector) 389 return -1; 390 391 #ifdef _STANDALONE 392 bi_wedge.matchblk = sector; 393 bi_wedge.matchnblks = 1; 394 395 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 396 #endif 397 398 sectors = sizeof(d->buf)/d->ll.secsize; /* sectors per buffer */ 399 entries = sizeof(d->buf)/gpth.hdr_entsz; /* entries per buffer */ 400 entblk = gpth.hdr_lba_table + rf_offset; 401 crc = crc32(0, NULL, 0); 402 403 j = 0; 404 ep = (const struct gpt_ent *)d->buf; 405 406 for (entry = 0; entry < gpth.hdr_entries; entry += entries) { 407 size = MIN(sizeof(d->buf), 408 (gpth.hdr_entries - entry) * gpth.hdr_entsz); 409 entries = size / gpth.hdr_entsz; 410 sectors = roundup(size, d->ll.secsize) / d->ll.secsize; 411 if (readsects(&d->ll, entblk, sectors, d->buf, 1)) 412 return -1; 413 entblk += sectors; 414 crc = crc32(crc, (const void *)d->buf, size); 415 416 for (i = 0; j < BIOSDISKNPART && i < entries; i++) { 417 u = (const struct uuid *)ep[i].ent_type; 418 if (!guid_is_nil(u)) { 419 d->part[j].offset = ep[i].ent_lba_start; 420 d->part[j].size = ep[i].ent_lba_end - 421 ep[i].ent_lba_start + 1; 422 if (guid_is_equal(u, &GET_nbsd_ffs)) 423 d->part[j].fstype = FS_BSDFFS; 424 else if (guid_is_equal(u, &GET_nbsd_lfs)) 425 d->part[j].fstype = FS_BSDLFS; 426 else if (guid_is_equal(u, &GET_nbsd_raid)) 427 d->part[j].fstype = FS_RAID; 428 else if (guid_is_equal(u, &GET_nbsd_swap)) 429 d->part[j].fstype = FS_SWAP; 430 else if (guid_is_equal(u, &GET_nbsd_ccd)) 431 d->part[j].fstype = FS_CCD; 432 else if (guid_is_equal(u, &GET_nbsd_cgd)) 433 d->part[j].fstype = FS_CGD; 434 else 435 d->part[j].fstype = FS_OTHER; 436 #ifndef NO_GPT 437 for (int k = 0; 438 k < __arraycount(gpt_parts); 439 k++) { 440 if (guid_is_equal(u, gpt_parts[k].guid)) 441 d->part[j].guid = &gpt_parts[k]; 442 } 443 d->part[j].attr = ep[i].ent_attr; 444 445 d->part[j].part_name = 446 alloc(BIOSDISK_PART_NAME_LEN); 447 part_name_utf8(ep[i].ent_name, 448 sizeof(ep[i].ent_name), 449 d->part[j].part_name, 450 BIOSDISK_PART_NAME_LEN); 451 #endif 452 j++; 453 } 454 } 455 456 } 457 458 if (crc != gpth.hdr_crc_table) { 459 #ifdef DISK_DEBUG 460 printf("GPT table CRC invalid\n"); 461 #endif 462 return -1; 463 } 464 465 return 0; 466 } 467 468 static int 469 read_gpt(struct biosdisk *d, daddr_t rf_offset, daddr_t rf_size) 470 { 471 struct biosdisk_extinfo ed; 472 daddr_t gptsector[2]; 473 int i, error; 474 475 if (d->ll.type != BIOSDISK_TYPE_HD) 476 /* No GPT on floppy and CD */ 477 return -1; 478 479 if (rf_offset && rf_size) { 480 gptsector[0] = rf_offset + GPT_HDR_BLKNO; 481 gptsector[1] = rf_offset + rf_size - 1; 482 } else { 483 gptsector[0] = GPT_HDR_BLKNO; 484 if (set_geometry(&d->ll, &ed) == 0 && 485 d->ll.flags & BIOSDISK_INT13EXT) { 486 gptsector[1] = ed.totsec - 1; 487 /* Sanity check values returned from BIOS */ 488 if (ed.sbytes >= 512 && 489 (ed.sbytes & (ed.sbytes - 1)) == 0) 490 d->ll.secsize = ed.sbytes; 491 } else { 492 #ifdef DISK_DEBUG 493 printf("Unable to determine extended disk geometry - " 494 "using CHS\n"); 495 #endif 496 /* at least try some other reasonable values then */ 497 gptsector[1] = d->ll.chs_sectors - 1; 498 } 499 } 500 501 for (i = 0; i < __arraycount(gptsector); i++) { 502 error = check_gpt(d, rf_offset, gptsector[i]); 503 if (error == 0) 504 break; 505 } 506 507 if (i >= __arraycount(gptsector)) { 508 memset(d->part, 0, sizeof(d->part)); 509 return -1; 510 } 511 512 #ifndef USE_SECONDARY_GPT 513 if (i > 0) { 514 #ifdef DISK_DEBUG 515 printf("ignoring valid secondary GPT\n"); 516 #endif 517 return -1; 518 } 519 #endif 520 521 #ifdef DISK_DEBUG 522 printf("using %s GPT\n", (i == 0) ? "primary" : "secondary"); 523 #endif 524 return 0; 525 } 526 #endif /* !NO_GPT */ 527 528 #ifndef NO_DISKLABEL 529 static void 530 ingest_label(struct biosdisk *d, struct disklabel *lp) 531 { 532 int part; 533 534 memset(d->part, 0, sizeof(d->part)); 535 536 for (part = 0; part < lp->d_npartitions; part++) { 537 if (lp->d_partitions[part].p_size == 0) 538 continue; 539 if (lp->d_partitions[part].p_fstype == FS_UNUSED) 540 continue; 541 d->part[part].fstype = lp->d_partitions[part].p_fstype; 542 d->part[part].offset = lp->d_partitions[part].p_offset; 543 d->part[part].size = lp->d_partitions[part].p_size; 544 } 545 } 546 547 static int 548 check_label(struct biosdisk *d, daddr_t sector) 549 { 550 struct disklabel *lp; 551 552 /* find partition in NetBSD disklabel */ 553 if (readsects(&d->ll, sector + LABELSECTOR, 1, d->buf, 0)) { 554 #ifdef DISK_DEBUG 555 printf("Error reading disklabel\n"); 556 #endif 557 return EIO; 558 } 559 lp = (struct disklabel *) (d->buf + LABELOFFSET); 560 if (lp->d_magic != DISKMAGIC || dkcksum(lp)) { 561 #ifdef DISK_DEBUG 562 printf("warning: no disklabel in sector %"PRId64"\n", sector); 563 #endif 564 return -1; 565 } 566 567 ingest_label(d, lp); 568 569 bi_disk.labelsector = sector + LABELSECTOR; 570 bi_disk.label.type = lp->d_type; 571 memcpy(bi_disk.label.packname, lp->d_packname, 16); 572 bi_disk.label.checksum = lp->d_checksum; 573 574 bi_wedge.matchblk = sector + LABELSECTOR; 575 bi_wedge.matchnblks = 1; 576 577 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 578 579 return 0; 580 } 581 582 static int 583 read_minix_subp(struct biosdisk *d, struct disklabel* dflt_lbl, 584 int this_ext, daddr_t sector) 585 { 586 struct mbr_partition mbr[MBR_PART_COUNT]; 587 int i; 588 int typ; 589 struct partition *p; 590 591 if (readsects(&d->ll, sector, 1, d->buf, 0)) { 592 #ifdef DISK_DEBUG 593 printf("Error reading MFS sector %"PRId64"\n", sector); 594 #endif 595 return EIO; 596 } 597 if ((uint8_t)d->buf[510] != 0x55 || (uint8_t)d->buf[511] != 0xAA) { 598 return -1; 599 } 600 memcpy(&mbr, MBR_PARTS(d->buf), sizeof(mbr)); 601 for (i = 0; i < MBR_PART_COUNT; i++) { 602 typ = mbr[i].mbrp_type; 603 if (typ == 0) 604 continue; 605 sector = this_ext + mbr[i].mbrp_start; 606 if (dflt_lbl->d_npartitions >= MAXPARTITIONS) 607 continue; 608 p = &dflt_lbl->d_partitions[dflt_lbl->d_npartitions++]; 609 p->p_offset = sector; 610 p->p_size = mbr[i].mbrp_size; 611 p->p_fstype = xlat_mbr_fstype(typ); 612 } 613 return 0; 614 } 615 616 #if defined(EFIBOOT) && defined(SUPPORT_CD9660) 617 static int 618 check_cd9660(struct biosdisk *d) 619 { 620 struct biosdisk_extinfo ed; 621 struct iso_primary_descriptor *vd; 622 daddr_t bno; 623 624 for (bno = 16;; bno++) { 625 if (readsects(&d->ll, bno, 1, d->buf, 0)) 626 return -1; 627 vd = (struct iso_primary_descriptor *)d->buf; 628 if (memcmp(vd->id, ISO_STANDARD_ID, sizeof vd->id) != 0) 629 return -1; 630 if (isonum_711(vd->type) == ISO_VD_END) 631 return -1; 632 if (isonum_711(vd->type) == ISO_VD_PRIMARY) 633 break; 634 } 635 if (isonum_723(vd->logical_block_size) != ISO_DEFAULT_BLOCK_SIZE) 636 return -1; 637 638 if (set_geometry(&d->ll, &ed)) 639 return -1; 640 641 memset(d->part, 0, sizeof(d->part)); 642 d->part[0].fstype = FS_ISO9660; 643 d->part[0].offset = 0; 644 d->part[0].size = ed.totsec; 645 return 0; 646 } 647 #endif 648 649 static int 650 read_label(struct biosdisk *d, daddr_t offset) 651 { 652 struct disklabel dflt_lbl; 653 struct mbr_partition mbr[MBR_PART_COUNT]; 654 struct partition *p; 655 uint32_t sector; 656 int i; 657 int error; 658 int typ; 659 uint32_t ext_base, this_ext, next_ext; 660 #ifdef COMPAT_386BSD_MBRPART 661 int sector_386bsd = -1; 662 #endif 663 664 memset(&dflt_lbl, 0, sizeof(dflt_lbl)); 665 dflt_lbl.d_npartitions = 8; 666 667 d->boff = 0; 668 d->size = 0; 669 670 if (d->ll.type != BIOSDISK_TYPE_HD) 671 /* No label on floppy and CD */ 672 return -1; 673 674 /* 675 * find NetBSD Partition in DOS partition table 676 * XXX check magic??? 677 */ 678 ext_base = offset; 679 next_ext = offset; 680 for (;;) { 681 this_ext = ext_base + next_ext; 682 next_ext = offset; 683 if (readsects(&d->ll, this_ext, 1, d->buf, 0)) { 684 #ifdef DISK_DEBUG 685 printf("error reading MBR sector %u\n", this_ext); 686 #endif 687 return EIO; 688 } 689 memcpy(&mbr, MBR_PARTS(d->buf), sizeof(mbr)); 690 /* Look for NetBSD partition ID */ 691 for (i = 0; i < MBR_PART_COUNT; i++) { 692 typ = mbr[i].mbrp_type; 693 if (typ == 0) 694 continue; 695 sector = this_ext + mbr[i].mbrp_start; 696 #ifdef DISK_DEBUG 697 printf("ptn type %d in sector %u\n", typ, sector); 698 #endif 699 if (typ == MBR_PTYPE_MINIX_14B) { 700 if (!read_minix_subp(d, &dflt_lbl, 701 this_ext, sector)) { 702 /* Don't add "container" partition */ 703 continue; 704 } 705 } 706 if (typ == MBR_PTYPE_NETBSD) { 707 error = check_label(d, sector); 708 if (error >= 0) 709 return error; 710 } 711 if (MBR_IS_EXTENDED(typ)) { 712 next_ext = mbr[i].mbrp_start + offset; 713 continue; 714 } 715 #ifdef COMPAT_386BSD_MBRPART 716 if (this_ext == offset && typ == MBR_PTYPE_386BSD) 717 sector_386bsd = sector; 718 #endif 719 if (this_ext != offset) { 720 if (dflt_lbl.d_npartitions >= MAXPARTITIONS) 721 continue; 722 p = &dflt_lbl.d_partitions[dflt_lbl.d_npartitions++]; 723 } else 724 p = &dflt_lbl.d_partitions[i]; 725 p->p_offset = sector; 726 p->p_size = mbr[i].mbrp_size; 727 p->p_fstype = xlat_mbr_fstype(typ); 728 } 729 if (next_ext == offset) 730 break; 731 if (ext_base == offset) { 732 ext_base = next_ext; 733 next_ext = offset; 734 } 735 } 736 737 sector = offset; 738 #ifdef COMPAT_386BSD_MBRPART 739 if (sector_386bsd != -1) { 740 printf("old BSD partition ID!\n"); 741 sector = sector_386bsd; 742 } 743 #endif 744 745 /* 746 * One of two things: 747 * 1. no MBR 748 * 2. no NetBSD partition in MBR 749 * 750 * We simply default to "start of disk" in this case and 751 * press on. 752 */ 753 error = check_label(d, sector); 754 if (error >= 0) 755 return error; 756 757 #if defined(EFIBOOT) && defined(SUPPORT_CD9660) 758 /* Check CD/DVD */ 759 error = check_cd9660(d); 760 if (error >= 0) 761 return error; 762 #endif 763 764 /* 765 * Nothing at start of disk, return info from mbr partitions. 766 */ 767 /* XXX fill it to make checksum match kernel one */ 768 dflt_lbl.d_checksum = dkcksum(&dflt_lbl); 769 ingest_label(d, &dflt_lbl); 770 return 0; 771 } 772 #endif /* NO_DISKLABEL */ 773 774 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 775 static int 776 read_partitions(struct biosdisk *d, daddr_t offset, daddr_t size) 777 { 778 int error; 779 780 error = -1; 781 782 #ifndef NO_GPT 783 error = read_gpt(d, offset, size); 784 if (error == 0) 785 return 0; 786 787 #endif 788 #ifndef NO_DISKLABEL 789 error = read_label(d, offset); 790 #endif 791 return error; 792 } 793 #endif 794 795 #ifndef NO_RAIDFRAME 796 static void 797 raidframe_probe(struct raidframe *raidframe, int *raidframe_count, 798 struct biosdisk *d, int part) 799 { 800 int i = *raidframe_count; 801 struct RF_ComponentLabel_s label; 802 daddr_t offset; 803 804 if (i + 1 > RAIDFRAME_NDEV) 805 return; 806 807 offset = d->part[part].offset; 808 if ((biosdisk_read_raidframe(d->ll.dev, offset, &label)) != 0) 809 return; 810 811 if (label.version != RF_COMPONENT_LABEL_VERSION) 812 printf("Unexpected raidframe label version\n"); 813 814 raidframe[i].last_unit = label.last_unit; 815 raidframe[i].serial = label.serial_number; 816 raidframe[i].biosdev = d->ll.dev; 817 raidframe[i].parent_part = part; 818 #ifndef NO_GPT 819 if (d->part[part].part_name) 820 strlcpy(raidframe[i].parent_name, 821 d->part[part].part_name, MAXDEVNAME); 822 else 823 raidframe[i].parent_name[0] = '\0'; 824 #endif 825 raidframe[i].offset = offset; 826 raidframe[i].size = label.__numBlocks; 827 828 (*raidframe_count)++; 829 830 return; 831 } 832 #endif 833 834 void 835 biosdisk_probe(void) 836 { 837 struct biosdisk *d; 838 struct biosdisk_extinfo ed; 839 #ifndef NO_RAIDFRAME 840 struct raidframe raidframe[RAIDFRAME_NDEV]; 841 int raidframe_count = 0; 842 #endif 843 uint64_t size; 844 int first; 845 int i; 846 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 847 int part; 848 #endif 849 850 for (i = 0; i < MAX_BIOSDISKS + 2; i++) { 851 first = 1; 852 d = alloc(sizeof(*d)); 853 if (d == NULL) { 854 printf("Out of memory\n"); 855 return; 856 } 857 memset(d, 0, sizeof(*d)); 858 memset(&ed, 0, sizeof(ed)); 859 if (i >= MAX_BIOSDISKS) 860 d->ll.dev = 0x00 + i - MAX_BIOSDISKS; /* fd */ 861 else 862 d->ll.dev = 0x80 + i; /* hd/cd */ 863 if (set_geometry(&d->ll, &ed)) 864 goto next_disk; 865 printf("disk "); 866 switch (d->ll.type) { 867 case BIOSDISK_TYPE_CD: 868 printf("cd0\n cd0a\n"); 869 break; 870 case BIOSDISK_TYPE_FD: 871 printf("fd%d\n", d->ll.dev & 0x7f); 872 printf(" fd%da\n", d->ll.dev & 0x7f); 873 break; 874 case BIOSDISK_TYPE_HD: 875 printf("hd%d", d->ll.dev & 0x7f); 876 if (d->ll.flags & BIOSDISK_INT13EXT) { 877 printf(" size "); 878 size = ed.totsec * ed.sbytes; 879 if (size >= (10ULL * 1024 * 1024 * 1024)) 880 printf("%"PRIu64" GB", 881 size / (1024 * 1024 * 1024)); 882 else 883 printf("%"PRIu64" MB", 884 size / (1024 * 1024)); 885 } 886 printf("\n"); 887 break; 888 } 889 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 890 if (d->ll.type != BIOSDISK_TYPE_HD) 891 goto next_disk; 892 893 if (read_partitions(d, 0, 0) != 0) 894 goto next_disk; 895 896 for (part = 0; part < BIOSDISKNPART; part++) { 897 if (d->part[part].size == 0) 898 continue; 899 if (d->part[part].fstype == FS_UNUSED) 900 continue; 901 #ifndef NO_RAIDFRAME 902 if (d->part[part].fstype == FS_RAID) 903 raidframe_probe(raidframe, 904 &raidframe_count, d, part); 905 #endif 906 if (first) { 907 printf(" "); 908 first = 0; 909 } 910 #ifndef NO_GPT 911 if (d->part[part].part_name && 912 d->part[part].part_name[0]) 913 printf(" NAME=%s(", d->part[part].part_name); 914 else 915 #endif 916 printf(" hd%d%c(", d->ll.dev & 0x7f, part + 'a'); 917 918 #ifndef NO_GPT 919 if (d->part[part].guid != NULL) 920 printf("%s", d->part[part].guid->name); 921 else 922 #endif 923 924 if (d->part[part].fstype < FSMAXTYPES) 925 printf("%s", 926 fstypenames[d->part[part].fstype]); 927 else 928 printf("%d", d->part[part].fstype); 929 printf(")"); 930 } 931 #endif 932 if (first == 0) 933 printf("\n"); 934 935 next_disk: 936 dealloc_biosdisk(d); 937 } 938 939 #ifndef NO_RAIDFRAME 940 for (i = 0; i < raidframe_count; i++) { 941 size_t secsize; 942 943 if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) { 944 printf("Out of memory\n"); 945 return; 946 } 947 948 secsize = d->ll.secsize; 949 950 printf("raidframe raid%d serial %d in ", 951 raidframe[i].last_unit, raidframe[i].serial); 952 #ifndef NO_GPT 953 if (raidframe[i].parent_name[0]) 954 printf("NAME=%s size ", raidframe[i].parent_name); 955 else 956 #endif 957 printf("hd%d%c size ", d->ll.dev & 0x7f, 958 raidframe[i].parent_part + 'a'); 959 if (raidframe[i].size >= (10ULL * 1024 * 1024 * 1024 / secsize)) 960 printf("%"PRIu64" GB", 961 raidframe[i].size / (1024 * 1024 * 1024 / secsize)); 962 else 963 printf("%"PRIu64" MB", 964 raidframe[i].size / (1024 * 1024 / secsize)); 965 printf("\n"); 966 967 if (read_partitions(d, 968 raidframe[i].offset + RF_PROTECTED_SECTORS, 969 raidframe[i].size) != 0) 970 goto next_raidrame; 971 972 first = 1; 973 for (part = 0; part < BIOSDISKNPART; part++) { 974 #ifndef NO_GPT 975 bool bootme = d->part[part].attr & GPT_ENT_ATTR_BOOTME; 976 #else 977 bool bootme = 0; 978 #endif 979 980 if (d->part[part].size == 0) 981 continue; 982 if (d->part[part].fstype == FS_UNUSED) 983 continue; 984 if (d->part[part].fstype == FS_RAID) 985 continue; 986 if (first) { 987 printf(" "); 988 first = 0; 989 } 990 #ifndef NO_GPT 991 if (d->part[part].part_name && 992 d->part[part].part_name[0]) 993 printf(" NAME=%s(", d->part[part].part_name); 994 else 995 #endif 996 printf(" raid%d%c(", raidframe[i].last_unit, 997 part + 'a'); 998 #ifndef NO_GPT 999 if (d->part[part].guid != NULL) 1000 printf("%s", d->part[part].guid->name); 1001 else 1002 #endif 1003 if (d->part[part].fstype < FSMAXTYPES) 1004 printf("%s", 1005 fstypenames[d->part[part].fstype]); 1006 else 1007 printf("%d", d->part[part].fstype); 1008 printf("%s)", bootme ? ", bootme" : ""); 1009 } 1010 1011 next_raidrame: 1012 if (first == 0) 1013 printf("\n"); 1014 1015 dealloc_biosdisk(d); 1016 } 1017 #endif 1018 } 1019 1020 /* Determine likely partition for possible sector number of dos 1021 * partition. 1022 */ 1023 1024 int 1025 biosdisk_findpartition(int biosdev, daddr_t sector, 1026 int *partition, const char **part_name) 1027 { 1028 #if defined(NO_DISKLABEL) && defined(NO_GPT) 1029 *partition = 0; 1030 if (part_name) 1031 *part_name = NULL; 1032 return 0; 1033 #else 1034 int i; 1035 struct biosdisk *d; 1036 int biosboot_sector_part = -1; 1037 int bootable_fs_part = -1; 1038 int boot_part = 0; 1039 #ifndef NO_GPT 1040 int gpt_bootme_part = -1; 1041 static char namebuf[MAXDEVNAME + 1]; 1042 #endif 1043 1044 #ifdef DISK_DEBUG 1045 printf("looking for partition device %x, sector %"PRId64"\n", biosdev, sector); 1046 #endif 1047 1048 /* default to first partition */ 1049 *partition = 0; 1050 if (part_name) 1051 *part_name = NULL; 1052 1053 /* Look for netbsd partition that is the dos boot one */ 1054 d = alloc_biosdisk(biosdev); 1055 if (d == NULL) 1056 return -1; 1057 1058 if (read_partitions(d, 0, 0) == 0) { 1059 for (i = 0; i < BIOSDISKNPART; i++) { 1060 if (d->part[i].fstype == FS_UNUSED) 1061 continue; 1062 1063 if (d->part[i].offset == sector && 1064 biosboot_sector_part == -1) 1065 biosboot_sector_part = i; 1066 1067 #ifndef NO_GPT 1068 if (d->part[i].attr & GPT_ENT_ATTR_BOOTME && 1069 gpt_bootme_part == -1) 1070 gpt_bootme_part = i; 1071 #endif 1072 switch (d->part[i].fstype) { 1073 case FS_BSDFFS: 1074 case FS_BSDLFS: 1075 case FS_RAID: 1076 case FS_CCD: 1077 case FS_CGD: 1078 case FS_ISO9660: 1079 if (bootable_fs_part == -1) 1080 bootable_fs_part = i; 1081 break; 1082 1083 default: 1084 break; 1085 } 1086 } 1087 1088 #ifndef NO_GPT 1089 if (gpt_bootme_part != -1) 1090 boot_part = gpt_bootme_part; 1091 else 1092 #endif 1093 if (biosboot_sector_part != -1) 1094 boot_part = biosboot_sector_part; 1095 else if (bootable_fs_part != -1) 1096 boot_part = bootable_fs_part; 1097 else 1098 boot_part = 0; 1099 1100 *partition = boot_part; 1101 #ifndef NO_GPT 1102 if (part_name && 1103 d->part[boot_part].part_name && 1104 d->part[boot_part].part_name[0]) { 1105 strlcpy(namebuf, d->part[boot_part].part_name, 1106 BIOSDISK_PART_NAME_LEN); 1107 *part_name = namebuf; 1108 } 1109 #endif 1110 } 1111 1112 dealloc_biosdisk(d); 1113 return 0; 1114 #endif /* NO_DISKLABEL && NO_GPT */ 1115 } 1116 1117 int 1118 biosdisk_readpartition(int biosdev, daddr_t offset, daddr_t size, 1119 struct biosdisk_partition **partpp, int *rnum) 1120 { 1121 #if defined(NO_DISKLABEL) && defined(NO_GPT) 1122 return ENOTSUP; 1123 #else 1124 struct biosdisk *d; 1125 struct biosdisk_partition *part; 1126 int rv; 1127 1128 /* Look for netbsd partition that is the dos boot one */ 1129 d = alloc_biosdisk(biosdev); 1130 if (d == NULL) 1131 return ENOMEM; 1132 1133 if (read_partitions(d, offset, size)) { 1134 rv = EINVAL; 1135 goto out; 1136 } 1137 1138 part = copy_biosdisk_part(d); 1139 if (part == NULL) { 1140 rv = ENOMEM; 1141 goto out; 1142 } 1143 1144 *partpp = part; 1145 *rnum = (int)__arraycount(d->part); 1146 rv = 0; 1147 out: 1148 dealloc_biosdisk(d); 1149 return rv; 1150 #endif /* NO_DISKLABEL && NO_GPT */ 1151 } 1152 1153 #ifndef NO_RAIDFRAME 1154 int 1155 biosdisk_read_raidframe(int biosdev, daddr_t offset, 1156 struct RF_ComponentLabel_s *label) 1157 { 1158 #if defined(NO_DISKLABEL) && defined(NO_GPT) 1159 return ENOTSUP; 1160 #else 1161 struct biosdisk *d; 1162 struct biosdisk_extinfo ed; 1163 daddr_t size; 1164 int rv = -1; 1165 1166 /* Look for netbsd partition that is the dos boot one */ 1167 d = alloc_biosdisk(biosdev); 1168 if (d == NULL) 1169 goto out; 1170 1171 if (d->ll.type != BIOSDISK_TYPE_HD) 1172 /* No raidframe on floppy and CD */ 1173 goto out; 1174 1175 if (set_geometry(&d->ll, &ed) != 0) 1176 goto out; 1177 1178 /* Sanity check values returned from BIOS */ 1179 if (ed.sbytes >= 512 && 1180 (ed.sbytes & (ed.sbytes - 1)) == 0) 1181 d->ll.secsize = ed.sbytes; 1182 1183 offset += (RF_COMPONENT_INFO_OFFSET / d->ll.secsize); 1184 size = roundup(sizeof(*label), d->ll.secsize) / d->ll.secsize; 1185 if (readsects(&d->ll, offset, size, d->buf, 0)) 1186 goto out; 1187 memcpy(label, d->buf, sizeof(*label)); 1188 rv = 0; 1189 out: 1190 if (d != NULL) 1191 dealloc_biosdisk(d); 1192 return rv; 1193 #endif /* NO_DISKLABEL && NO_GPT */ 1194 } 1195 #endif /* NO_RAIDFRAME */ 1196 1197 #ifdef _STANDALONE 1198 static void 1199 add_biosdisk_bootinfo(void) 1200 { 1201 #ifndef EFIBOOT 1202 if (bootinfo == NULL) { 1203 return; 1204 } 1205 BI_ADD(&bi_disk, BTINFO_BOOTDISK, sizeof(bi_disk)); 1206 BI_ADD(&bi_wedge, BTINFO_BOOTWEDGE, sizeof(bi_wedge)); 1207 #endif 1208 return; 1209 } 1210 #endif 1211 1212 #ifndef NO_GPT 1213 static void 1214 raidframe_part_offset(struct biosdisk *d, int part) 1215 { 1216 struct biosdisk raidframe; 1217 daddr_t rf_offset; 1218 daddr_t rf_size; 1219 int i, candidate; 1220 1221 memset(&raidframe, 0, sizeof(raidframe)); 1222 raidframe.ll = d->ll; 1223 1224 rf_offset = d->part[part].offset + RF_PROTECTED_SECTORS; 1225 rf_size = d->part[part].size; 1226 if (read_gpt(&raidframe, rf_offset, rf_size) != 0) { 1227 d->boff += RF_PROTECTED_SECTORS; 1228 return; 1229 } 1230 1231 candidate = 0; 1232 for (i = 0; i < BIOSDISKNPART; i++) { 1233 if (raidframe.part[i].size == 0) 1234 continue; 1235 if (raidframe.part[i].fstype == FS_UNUSED) 1236 continue; 1237 #ifndef NO_GPT 1238 if (raidframe.part[i].attr & GPT_ENT_ATTR_BOOTME) { 1239 candidate = i; 1240 break; 1241 } 1242 #endif 1243 if (raidframe.part[i].fstype == FS_BSDFFS || 1244 raidframe.part[i].fstype == FS_BSDLFS) { 1245 if (candidate == 0) 1246 candidate = i; 1247 } 1248 } 1249 1250 d->boff += RF_PROTECTED_SECTORS + raidframe.part[candidate].offset; 1251 d->size = raidframe.part[candidate].size; 1252 } 1253 #endif 1254 1255 int 1256 biosdisk_open(struct open_file *f, ...) 1257 /* struct open_file *f, int biosdev, int partition */ 1258 { 1259 va_list ap; 1260 struct biosdisk *d; 1261 int biosdev; 1262 int partition; 1263 int error = 0; 1264 1265 va_start(ap, f); 1266 biosdev = va_arg(ap, int); 1267 d = alloc_biosdisk(biosdev); 1268 if (d == NULL) { 1269 error = ENXIO; 1270 goto out; 1271 } 1272 1273 partition = va_arg(ap, int); 1274 bi_disk.biosdev = d->ll.dev; 1275 bi_disk.partition = partition; 1276 bi_disk.labelsector = -1; 1277 1278 bi_wedge.biosdev = d->ll.dev; 1279 bi_wedge.matchblk = -1; 1280 1281 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 1282 error = read_partitions(d, 0, 0); 1283 if (error == -1) { 1284 error = 0; 1285 goto nolabel; 1286 } 1287 if (error) 1288 goto out; 1289 1290 if (partition >= BIOSDISKNPART || 1291 d->part[partition].fstype == FS_UNUSED) { 1292 #ifdef DISK_DEBUG 1293 printf("illegal partition\n"); 1294 #endif 1295 error = EPART; 1296 goto out; 1297 } 1298 1299 d->boff = d->part[partition].offset; 1300 d->size = d->part[partition].size; 1301 1302 if (d->part[partition].fstype == FS_RAID) 1303 #ifndef NO_GPT 1304 raidframe_part_offset(d, partition); 1305 #else 1306 d->boff += RF_PROTECTED_SECTORS; 1307 #endif 1308 1309 #ifdef _STANDALONE 1310 bi_wedge.startblk = d->boff; 1311 bi_wedge.nblks = d->size; 1312 #endif 1313 1314 nolabel: 1315 #endif 1316 #ifdef DISK_DEBUG 1317 printf("partition @%"PRId64"\n", d->boff); 1318 #endif 1319 1320 #ifdef _STANDALONE 1321 add_biosdisk_bootinfo(); 1322 #endif 1323 1324 f->f_devdata = d; 1325 out: 1326 va_end(ap); 1327 if (error) 1328 dealloc_biosdisk(d); 1329 return error; 1330 } 1331 1332 #ifndef NO_GPT 1333 static int 1334 biosdisk_find_name(const char *fname, int *biosdev, 1335 daddr_t *offset, daddr_t *size) 1336 { 1337 struct biosdisk *d; 1338 char name[MAXDEVNAME + 1]; 1339 char *sep; 1340 #ifndef NO_RAIDFRAME 1341 struct raidframe raidframe[RAIDFRAME_NDEV]; 1342 int raidframe_count = 0; 1343 #endif 1344 int i; 1345 int part; 1346 int ret = -1; 1347 1348 /* Strip leadinf NAME= and cut after the coloon included */ 1349 strlcpy(name, fname + 5, MAXDEVNAME); 1350 sep = strchr(name, ':'); 1351 if (sep) 1352 *sep = '\0'; 1353 1354 for (i = 0; i < MAX_BIOSDISKS; i++) { 1355 d = alloc(sizeof(*d)); 1356 if (d == NULL) { 1357 printf("Out of memory\n"); 1358 goto out; 1359 } 1360 1361 memset(d, 0, sizeof(*d)); 1362 d->ll.dev = 0x80 + i; /* hd/cd */ 1363 if (set_geometry(&d->ll, NULL)) 1364 goto next_disk; 1365 1366 if (d->ll.type != BIOSDISK_TYPE_HD) 1367 goto next_disk; 1368 1369 if (read_partitions(d, 0, 0) != 0) 1370 goto next_disk; 1371 1372 for (part = 0; part < BIOSDISKNPART; part++) { 1373 if (d->part[part].size == 0) 1374 continue; 1375 if (d->part[part].fstype == FS_UNUSED) 1376 continue; 1377 #ifndef NO_RAIDFRAME 1378 if (d->part[part].fstype == FS_RAID) { 1379 raidframe_probe(raidframe, 1380 &raidframe_count, d, part); 1381 /* 1382 * Do not match RAID partition for a name, 1383 * we want to report an inner partition. 1384 */ 1385 continue; 1386 } 1387 #endif 1388 if (d->part[part].part_name != NULL && 1389 strcmp(d->part[part].part_name, name) == 0) { 1390 *biosdev = d->ll.dev; 1391 *offset = d->part[part].offset; 1392 *size = d->part[part].size; 1393 ret = 0; 1394 goto out; 1395 } 1396 1397 } 1398 next_disk: 1399 dealloc_biosdisk(d); 1400 d = NULL; 1401 } 1402 1403 #ifndef NO_RAIDFRAME 1404 for (i = 0; i < raidframe_count; i++) { 1405 int first_bootme = -1; 1406 int first_ffs = -1; 1407 int candidate = -1; 1408 1409 if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) { 1410 printf("Out of memory\n"); 1411 goto out; 1412 } 1413 1414 if (read_partitions(d, 1415 raidframe[i].offset + RF_PROTECTED_SECTORS, 1416 raidframe[i].size) != 0) 1417 goto next_raidframe; 1418 1419 for (part = 0; part < BIOSDISKNPART; part++) { 1420 if (d->part[part].size == 0) 1421 continue; 1422 if (d->part[part].fstype == FS_UNUSED) 1423 continue; 1424 1425 if (first_bootme == -1 && 1426 d->part[part].attr & GPT_ENT_ATTR_BOOTME) 1427 first_bootme = part; 1428 1429 if (first_ffs == -1 && 1430 (d->part[part].fstype == FS_BSDFFS || 1431 d->part[part].fstype == FS_BSDLFS)) 1432 first_ffs = part; 1433 1434 if (d->part[part].part_name != NULL && 1435 strcmp(d->part[part].part_name, name) == 0) { 1436 *biosdev = raidframe[i].biosdev; 1437 *offset = raidframe[i].offset 1438 + RF_PROTECTED_SECTORS 1439 + d->part[part].offset; 1440 *size = d->part[part].size; 1441 ret = 0; 1442 goto out; 1443 } 1444 } 1445 1446 if (strcmp(raidframe[i].parent_name, name) == 0) { 1447 if (first_bootme != -1) 1448 candidate = first_bootme; 1449 else if (first_ffs != -1) 1450 candidate = first_ffs; 1451 } 1452 1453 if (candidate != -1) { 1454 *biosdev = raidframe[i].biosdev; 1455 *offset = raidframe[i].offset 1456 + RF_PROTECTED_SECTORS 1457 + d->part[candidate].offset; 1458 *size = d->part[candidate].size; 1459 ret = 0; 1460 goto out; 1461 } 1462 1463 next_raidframe: 1464 dealloc_biosdisk(d); 1465 d = NULL; 1466 } 1467 #endif 1468 1469 out: 1470 if (d != NULL) 1471 dealloc_biosdisk(d); 1472 1473 return ret; 1474 } 1475 #endif 1476 1477 #ifndef NO_RAIDFRAME 1478 static int 1479 biosdisk_find_raid(const char *name, int *biosdev, 1480 daddr_t *offset, daddr_t *size) 1481 { 1482 struct biosdisk *d = NULL; 1483 struct raidframe raidframe[RAIDFRAME_NDEV]; 1484 int raidframe_count = 0; 1485 int i; 1486 int target_unit = 0; 1487 int target_part; 1488 int part; 1489 int ret = -1; 1490 1491 if (strstr(name, "raid") != name) 1492 goto out; 1493 1494 #define isnum(c) ((c) >= '0' && (c) <= '9') 1495 i = 4; /* skip leading "raid" */ 1496 if (!isnum(name[i])) 1497 goto out; 1498 do { 1499 target_unit *= 10; 1500 target_unit += name[i++] - '0'; 1501 } while (isnum(name[i])); 1502 1503 #define isvalidpart(c) ((c) >= 'a' && (c) <= 'z') 1504 1505 if (!isvalidpart(name[i])) 1506 goto out; 1507 target_part = name[i] - 'a'; 1508 1509 for (i = 0; i < MAX_BIOSDISKS; i++) { 1510 d = alloc(sizeof(*d)); 1511 if (d == NULL) { 1512 printf("Out of memory\n"); 1513 goto out; 1514 } 1515 1516 memset(d, 0, sizeof(*d)); 1517 d->ll.dev = 0x80 + i; /* hd/cd */ 1518 if (set_geometry(&d->ll, NULL)) 1519 goto next_disk; 1520 1521 if (d->ll.type != BIOSDISK_TYPE_HD) 1522 goto next_disk; 1523 1524 if (read_partitions(d, 0, 0) != 0) 1525 goto next_disk; 1526 1527 for (part = 0; part < BIOSDISKNPART; part++) { 1528 if (d->part[part].size == 0) 1529 continue; 1530 if (d->part[part].fstype != FS_RAID) 1531 continue; 1532 raidframe_probe(raidframe, 1533 &raidframe_count, d, part); 1534 1535 } 1536 next_disk: 1537 dealloc_biosdisk(d); 1538 d = NULL; 1539 } 1540 1541 for (i = 0; i < raidframe_count; i++) { 1542 int first_bootme = -1; 1543 int first_ffs = -1; 1544 int candidate = -1; 1545 1546 if (raidframe[i].last_unit != target_unit) 1547 continue; 1548 1549 if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) { 1550 printf("Out of memory\n"); 1551 goto out; 1552 } 1553 1554 if (read_partitions(d, 1555 raidframe[i].offset + RF_PROTECTED_SECTORS, 1556 raidframe[i].size) != 0) 1557 goto next_raidframe; 1558 1559 for (part = 0; part < BIOSDISKNPART; part++) { 1560 if (d->part[part].size == 0) 1561 continue; 1562 if (d->part[part].fstype == FS_UNUSED) 1563 continue; 1564 1565 #ifndef NO_GPT 1566 if (first_bootme == -1 && 1567 d->part[part].attr & GPT_ENT_ATTR_BOOTME) 1568 first_bootme = part; 1569 #endif 1570 1571 if (first_ffs == -1 && 1572 (d->part[part].fstype == FS_BSDFFS || 1573 d->part[part].fstype == FS_BSDLFS)) 1574 first_ffs = part; 1575 1576 if (part == target_part) { 1577 *biosdev = raidframe[i].biosdev; 1578 *offset = raidframe[i].offset 1579 + RF_PROTECTED_SECTORS 1580 + d->part[part].offset; 1581 *size = d->part[part].size; 1582 ret = 0; 1583 goto out; 1584 } 1585 } 1586 1587 if (first_bootme != -1) 1588 candidate = first_bootme; 1589 else if (first_ffs != -1) 1590 candidate = first_ffs; 1591 1592 if (candidate != -1) { 1593 *biosdev = raidframe[i].biosdev; 1594 *offset = raidframe[i].offset 1595 + RF_PROTECTED_SECTORS 1596 + d->part[candidate].offset; 1597 *size = d->part[candidate].size; 1598 ret = 0; 1599 goto out; 1600 } 1601 1602 next_raidframe: 1603 dealloc_biosdisk(d); 1604 d = NULL; 1605 } 1606 out: 1607 if (d != NULL) 1608 dealloc_biosdisk(d); 1609 1610 return ret; 1611 } 1612 #endif 1613 1614 int 1615 biosdisk_open_name(struct open_file *f, const char *name) 1616 { 1617 #if defined(NO_GPT) && defined(NO_RAIDFRAME) 1618 return ENXIO; 1619 #else 1620 struct biosdisk *d = NULL; 1621 int biosdev; 1622 daddr_t offset; 1623 daddr_t size; 1624 int error = -1; 1625 1626 #ifndef NO_GPT 1627 if (error && strstr(name, "NAME=") == name) 1628 error = biosdisk_find_name(name, &biosdev, &offset, &size); 1629 #endif 1630 #ifndef NO_RAIDFRAME 1631 if (error && strstr(name, "raid") == name) 1632 error = biosdisk_find_raid(name, &biosdev, &offset, &size); 1633 #endif 1634 1635 if (error != 0) { 1636 printf("%s not found\n", name); 1637 error = ENXIO; 1638 goto out; 1639 } 1640 1641 d = alloc_biosdisk(biosdev); 1642 if (d == NULL) { 1643 error = ENXIO; 1644 goto out; 1645 } 1646 1647 bi_disk.biosdev = d->ll.dev; 1648 bi_disk.partition = 0; 1649 bi_disk.labelsector = -1; 1650 1651 bi_wedge.biosdev = d->ll.dev; 1652 1653 /* 1654 * If we did not get wedge match info from check_gpt() 1655 * compute it now. 1656 */ 1657 if (bi_wedge.matchblk == -1) { 1658 if (readsects(&d->ll, offset, 1, d->buf, 1)) { 1659 #ifdef DISK_DEBUG 1660 printf("Error reading sector at %"PRId64"\n", offset); 1661 #endif 1662 error = EIO; 1663 goto out; 1664 } 1665 1666 bi_wedge.matchblk = offset; 1667 bi_wedge.matchnblks = 1; 1668 1669 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 1670 } 1671 1672 d->boff = offset; 1673 1674 bi_wedge.startblk = offset; 1675 bi_wedge.nblks = size; 1676 1677 #ifdef _STANDALONE 1678 add_biosdisk_bootinfo(); 1679 #endif 1680 1681 f->f_devdata = d; 1682 out: 1683 if (error && d != NULL) 1684 dealloc_biosdisk(d); 1685 return error; 1686 #endif 1687 } 1688 1689 1690 1691 #ifndef LIBSA_NO_FS_CLOSE 1692 int 1693 biosdisk_close(struct open_file *f) 1694 { 1695 struct biosdisk *d = f->f_devdata; 1696 1697 /* let the floppy drive go off */ 1698 if (d->ll.type == BIOSDISK_TYPE_FD) 1699 wait_sec(3); /* 2s is enough on all PCs I found */ 1700 1701 dealloc_biosdisk(d); 1702 f->f_devdata = NULL; 1703 return 0; 1704 } 1705 #endif 1706 1707 int 1708 biosdisk_ioctl(struct open_file *f, u_long cmd, void *arg) 1709 { 1710 return EIO; 1711 } 1712
Indexes created Mon Sep 22 13:09:51 GMT 2025