biosdisk.c revision 1.58
1 /* $NetBSD: biosdisk.c,v 1.58 2022/05/03 10:09:40 jmcneill 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 char buf[BIOSDISK_BUFSIZE]; 109 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 110 struct biosdisk_partition part[BIOSDISKNPART]; 111 #endif 112 }; 113 114 #include <dev/raidframe/raidframevar.h> 115 #define RF_COMPONENT_INFO_OFFSET 16384 /* from sys/dev/raidframe/rf_netbsdkintf.c */ 116 #define RF_COMPONENT_LABEL_VERSION 2 /* from <dev/raidframe/rf_raid.h> */ 117 118 #define RAIDFRAME_NDEV 16 /* abitrary limit to 15 raidframe devices */ 119 struct raidframe { 120 int last_unit; 121 int serial; 122 int biosdev; 123 int parent_part; 124 #ifndef NO_GPT 125 char parent_name[MAXDEVNAME + 1]; 126 #endif 127 daddr_t offset; 128 daddr_t size; 129 }; 130 131 132 #ifndef NO_GPT 133 const struct uuid GET_nbsd_raid = GPT_ENT_TYPE_NETBSD_RAIDFRAME; 134 const struct uuid GET_nbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS; 135 const struct uuid GET_nbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS; 136 const struct uuid GET_nbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP; 137 const struct uuid GET_nbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD; 138 const struct uuid GET_nbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD; 139 140 const struct uuid GET_efi = GPT_ENT_TYPE_EFI; 141 const struct uuid GET_mbr = GPT_ENT_TYPE_MBR; 142 const struct uuid GET_fbsd = GPT_ENT_TYPE_FREEBSD; 143 const struct uuid GET_fbsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP; 144 const struct uuid GET_fbsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS; 145 const struct uuid GET_fbsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM; 146 const struct uuid GET_fbsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS; 147 const struct uuid GET_ms_rsvd = GPT_ENT_TYPE_MS_RESERVED; 148 const struct uuid GET_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA; 149 const struct uuid GET_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA; 150 const struct uuid GET_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA; 151 const struct uuid GET_linux_data = GPT_ENT_TYPE_LINUX_DATA; 152 const struct uuid GET_linux_raid = GPT_ENT_TYPE_LINUX_RAID; 153 const struct uuid GET_linux_swap = GPT_ENT_TYPE_LINUX_SWAP; 154 const struct uuid GET_linux_lvm = GPT_ENT_TYPE_LINUX_LVM; 155 const struct uuid GET_apple_hfs = GPT_ENT_TYPE_APPLE_HFS; 156 const struct uuid GET_apple_ufs = GPT_ENT_TYPE_APPLE_UFS; 157 const struct uuid GET_bios = GPT_ENT_TYPE_BIOS; 158 159 const struct gpt_part gpt_parts[] = { 160 { &GET_nbsd_raid, "NetBSD RAID" }, 161 { &GET_nbsd_ffs, "NetBSD FFS" }, 162 { &GET_nbsd_lfs, "NetBSD LFS" }, 163 { &GET_nbsd_swap, "NetBSD Swap" }, 164 { &GET_nbsd_ccd, "NetBSD ccd" }, 165 { &GET_nbsd_cgd, "NetBSD cgd" }, 166 { &GET_efi, "EFI System" }, 167 { &GET_mbr, "MBR" }, 168 { &GET_fbsd, "FreeBSD" }, 169 { &GET_fbsd_swap, "FreeBSD Swap" }, 170 { &GET_fbsd_ufs, "FreeBSD UFS" }, 171 { &GET_fbsd_vinum, "FreeBSD Vinum" }, 172 { &GET_fbsd_zfs, "FreeBSD ZFS" }, 173 { &GET_ms_rsvd, "Microsoft Reserved" }, 174 { &GET_ms_basic_data, "Microsoft Basic data" }, 175 { &GET_ms_ldm_metadata, "Microsoft LDM metadata" }, 176 { &GET_ms_ldm_data, "Microsoft LDM data" }, 177 { &GET_linux_data, "Linux data" }, 178 { &GET_linux_raid, "Linux RAID" }, 179 { &GET_linux_swap, "Linux Swap" }, 180 { &GET_linux_lvm, "Linux LVM" }, 181 { &GET_apple_hfs, "Apple HFS" }, 182 { &GET_apple_ufs, "Apple UFS" }, 183 { &GET_bios, "BIOS Boot (GRUB)" }, 184 }; 185 #endif /* NO_GPT */ 186 187 struct btinfo_bootdisk bi_disk; 188 struct btinfo_bootwedge bi_wedge; 189 struct btinfo_rootdevice bi_root; 190 191 #define MBR_PARTS(buf) ((char *)(buf) + offsetof(struct mbr_sector, mbr_parts)) 192 193 #ifndef devb2cdb 194 #define devb2cdb(bno) (((bno) * DEV_BSIZE) / ISO_DEFAULT_BLOCK_SIZE) 195 #endif 196 197 static void 198 dealloc_biosdisk(struct biosdisk *d) 199 { 200 #ifndef NO_GPT 201 int i; 202 203 for (i = 0; i < __arraycount(d->part); i++) { 204 if (d->part[i].part_name != NULL) 205 dealloc(d->part[i].part_name, BIOSDISK_PART_NAME_LEN); 206 } 207 #endif 208 209 dealloc(d, sizeof(*d)); 210 211 return; 212 } 213 214 static struct biosdisk_partition * 215 copy_biosdisk_part(struct biosdisk *d) 216 { 217 struct biosdisk_partition *part; 218 219 part = alloc(sizeof(d->part)); 220 if (part == NULL) 221 goto out; 222 223 memcpy(part, d->part, sizeof(d->part)); 224 225 #ifndef NO_GPT 226 int i; 227 228 for (i = 0; i < __arraycount(d->part); i++) { 229 if (d->part[i].part_name != NULL) { 230 part[i].part_name = alloc(BIOSDISK_PART_NAME_LEN); 231 memcpy(part[i].part_name, d->part[i].part_name, 232 BIOSDISK_PART_NAME_LEN); 233 } 234 } 235 #endif 236 237 out: 238 return part; 239 } 240 241 int 242 biosdisk_strategy(void *devdata, int flag, daddr_t dblk, size_t size, 243 void *buf, size_t *rsize) 244 { 245 struct biosdisk *d; 246 int blks, frag; 247 248 if (flag != F_READ) 249 return EROFS; 250 251 d = (struct biosdisk *) devdata; 252 253 if (d->ll.type == BIOSDISK_TYPE_CD) 254 dblk = devb2cdb(dblk); 255 256 dblk += d->boff; 257 258 blks = size / d->ll.secsize; 259 if (blks && readsects(&d->ll, dblk, blks, buf, 0)) { 260 if (rsize) 261 *rsize = 0; 262 return EIO; 263 } 264 265 /* needed for CD */ 266 frag = size % d->ll.secsize; 267 if (frag) { 268 if (readsects(&d->ll, dblk + blks, 1, d->buf, 0)) { 269 if (rsize) 270 *rsize = blks * d->ll.secsize; 271 return EIO; 272 } 273 memcpy(buf + blks * d->ll.secsize, d->buf, frag); 274 } 275 276 if (rsize) 277 *rsize = size; 278 return 0; 279 } 280 281 static struct biosdisk * 282 alloc_biosdisk(int biosdev) 283 { 284 struct biosdisk *d; 285 286 d = alloc(sizeof(*d)); 287 if (d == NULL) 288 return NULL; 289 memset(d, 0, sizeof(*d)); 290 291 d->ll.dev = biosdev; 292 if (set_geometry(&d->ll, NULL)) { 293 #ifdef DISK_DEBUG 294 printf("no geometry information\n"); 295 #endif 296 dealloc_biosdisk(d); 297 return NULL; 298 } 299 return d; 300 } 301 302 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 303 static void 304 md5(void *hash, const void *data, size_t len) 305 { 306 MD5_CTX ctx; 307 308 MD5Init(&ctx); 309 MD5Update(&ctx, data, len); 310 MD5Final(hash, &ctx); 311 312 return; 313 } 314 #endif 315 316 #ifndef NO_GPT 317 bool 318 guid_is_nil(const struct uuid *u) 319 { 320 static const struct uuid nil = { .time_low = 0 }; 321 return (memcmp(u, &nil, sizeof(*u)) == 0 ? true : false); 322 } 323 324 bool 325 guid_is_equal(const struct uuid *a, const struct uuid *b) 326 { 327 return (memcmp(a, b, sizeof(*a)) == 0 ? true : false); 328 } 329 330 #ifndef NO_GPT 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 #endif 354 355 static int 356 check_gpt(struct biosdisk *d, daddr_t rf_offset, daddr_t sector) 357 { 358 struct gpt_hdr gpth; 359 const struct gpt_ent *ep; 360 const struct uuid *u; 361 daddr_t entblk; 362 size_t size; 363 uint32_t crc; 364 int sectors; 365 int entries; 366 int entry; 367 int i, j; 368 369 /* read in gpt_hdr sector */ 370 if (readsects(&d->ll, sector, 1, d->buf, 1)) { 371 #ifdef DISK_DEBUG 372 printf("Error reading GPT header at %"PRId64"\n", sector); 373 #endif 374 return EIO; 375 } 376 377 memcpy(&gpth, d->buf, sizeof(gpth)); 378 379 if (memcmp(GPT_HDR_SIG, gpth.hdr_sig, sizeof(gpth.hdr_sig))) 380 return -1; 381 382 crc = gpth.hdr_crc_self; 383 gpth.hdr_crc_self = 0; 384 gpth.hdr_crc_self = crc32(0, (const void *)&gpth, GPT_HDR_SIZE); 385 if (gpth.hdr_crc_self != crc) { 386 return -1; 387 } 388 389 if (gpth.hdr_lba_self + rf_offset != sector) 390 return -1; 391 392 #ifdef _STANDALONE 393 bi_wedge.matchblk = sector; 394 bi_wedge.matchnblks = 1; 395 396 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 397 #endif 398 399 sectors = sizeof(d->buf)/d->ll.secsize; /* sectors per buffer */ 400 entries = sizeof(d->buf)/gpth.hdr_entsz; /* entries per buffer */ 401 entblk = gpth.hdr_lba_table + rf_offset; 402 crc = crc32(0, NULL, 0); 403 404 j = 0; 405 ep = (const struct gpt_ent *)d->buf; 406 407 for (entry = 0; entry < gpth.hdr_entries; entry += entries) { 408 size = MIN(sizeof(d->buf), 409 (gpth.hdr_entries - entry) * gpth.hdr_entsz); 410 entries = size / gpth.hdr_entsz; 411 sectors = roundup(size, d->ll.secsize) / d->ll.secsize; 412 if (readsects(&d->ll, entblk, sectors, d->buf, 1)) 413 return -1; 414 entblk += sectors; 415 crc = crc32(crc, (const void *)d->buf, size); 416 417 for (i = 0; j < BIOSDISKNPART && i < entries; i++) { 418 u = (const struct uuid *)ep[i].ent_type; 419 if (!guid_is_nil(u)) { 420 d->part[j].offset = ep[i].ent_lba_start; 421 d->part[j].size = ep[i].ent_lba_end - 422 ep[i].ent_lba_start + 1; 423 if (guid_is_equal(u, &GET_nbsd_ffs)) 424 d->part[j].fstype = FS_BSDFFS; 425 else if (guid_is_equal(u, &GET_nbsd_lfs)) 426 d->part[j].fstype = FS_BSDLFS; 427 else if (guid_is_equal(u, &GET_nbsd_raid)) 428 d->part[j].fstype = FS_RAID; 429 else if (guid_is_equal(u, &GET_nbsd_swap)) 430 d->part[j].fstype = FS_SWAP; 431 else if (guid_is_equal(u, &GET_nbsd_ccd)) 432 d->part[j].fstype = FS_CCD; 433 else if (guid_is_equal(u, &GET_nbsd_cgd)) 434 d->part[j].fstype = FS_CGD; 435 else 436 d->part[j].fstype = FS_OTHER; 437 #ifndef NO_GPT 438 for (int k = 0; 439 k < __arraycount(gpt_parts); 440 k++) { 441 if (guid_is_equal(u, gpt_parts[k].guid)) 442 d->part[j].guid = &gpt_parts[k]; 443 } 444 d->part[j].attr = ep[i].ent_attr; 445 446 d->part[j].part_name = 447 alloc(BIOSDISK_PART_NAME_LEN); 448 part_name_utf8(ep[i].ent_name, 449 sizeof(ep[i].ent_name), 450 d->part[j].part_name, 451 BIOSDISK_PART_NAME_LEN); 452 #endif 453 j++; 454 } 455 } 456 457 } 458 459 if (crc != gpth.hdr_crc_table) { 460 #ifdef DISK_DEBUG 461 printf("GPT table CRC invalid\n"); 462 #endif 463 return -1; 464 } 465 466 return 0; 467 } 468 469 static int 470 read_gpt(struct biosdisk *d, daddr_t rf_offset, daddr_t rf_size) 471 { 472 struct biosdisk_extinfo ed; 473 daddr_t gptsector[2]; 474 int i, error; 475 476 if (d->ll.type != BIOSDISK_TYPE_HD) 477 /* No GPT on floppy and CD */ 478 return -1; 479 480 if (rf_offset && rf_size) { 481 gptsector[0] = rf_offset + GPT_HDR_BLKNO; 482 gptsector[1] = rf_offset + rf_size - 1; 483 } else { 484 gptsector[0] = GPT_HDR_BLKNO; 485 if (set_geometry(&d->ll, &ed) == 0 && 486 d->ll.flags & BIOSDISK_INT13EXT) { 487 gptsector[1] = ed.totsec - 1; 488 /* Sanity check values returned from BIOS */ 489 if (ed.sbytes >= 512 && 490 (ed.sbytes & (ed.sbytes - 1)) == 0) 491 d->ll.secsize = ed.sbytes; 492 } else { 493 #ifdef DISK_DEBUG 494 printf("Unable to determine extended disk geometry - " 495 "using CHS\n"); 496 #endif 497 /* at least try some other reasonable values then */ 498 gptsector[1] = d->ll.chs_sectors - 1; 499 } 500 } 501 502 for (i = 0; i < __arraycount(gptsector); i++) { 503 error = check_gpt(d, rf_offset, gptsector[i]); 504 if (error == 0) 505 break; 506 } 507 508 if (i >= __arraycount(gptsector)) { 509 memset(d->part, 0, sizeof(d->part)); 510 return -1; 511 } 512 513 #ifndef USE_SECONDARY_GPT 514 if (i > 0) { 515 #ifdef DISK_DEBUG 516 printf("ignoring valid secondary GPT\n"); 517 #endif 518 return -1; 519 } 520 #endif 521 522 #ifdef DISK_DEBUG 523 printf("using %s GPT\n", (i == 0) ? "primary" : "secondary"); 524 #endif 525 return 0; 526 } 527 #endif /* !NO_GPT */ 528 529 #ifndef NO_DISKLABEL 530 static void 531 ingest_label(struct biosdisk *d, struct disklabel *lp) 532 { 533 int part; 534 535 memset(d->part, 0, sizeof(d->part)); 536 537 for (part = 0; part < lp->d_npartitions; part++) { 538 if (lp->d_partitions[part].p_size == 0) 539 continue; 540 if (lp->d_partitions[part].p_fstype == FS_UNUSED) 541 continue; 542 d->part[part].fstype = lp->d_partitions[part].p_fstype; 543 d->part[part].offset = lp->d_partitions[part].p_offset; 544 d->part[part].size = lp->d_partitions[part].p_size; 545 } 546 } 547 548 static int 549 check_label(struct biosdisk *d, daddr_t sector) 550 { 551 struct disklabel *lp; 552 553 /* find partition in NetBSD disklabel */ 554 if (readsects(&d->ll, sector + LABELSECTOR, 1, d->buf, 0)) { 555 #ifdef DISK_DEBUG 556 printf("Error reading disklabel\n"); 557 #endif 558 return EIO; 559 } 560 lp = (struct disklabel *) (d->buf + LABELOFFSET); 561 if (lp->d_magic != DISKMAGIC || dkcksum(lp)) { 562 #ifdef DISK_DEBUG 563 printf("warning: no disklabel in sector %"PRId64"\n", sector); 564 #endif 565 return -1; 566 } 567 568 ingest_label(d, lp); 569 570 bi_disk.labelsector = sector + LABELSECTOR; 571 bi_disk.label.type = lp->d_type; 572 memcpy(bi_disk.label.packname, lp->d_packname, 16); 573 bi_disk.label.checksum = lp->d_checksum; 574 575 bi_wedge.matchblk = sector + LABELSECTOR; 576 bi_wedge.matchnblks = 1; 577 578 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 579 580 return 0; 581 } 582 583 static int 584 read_minix_subp(struct biosdisk *d, struct disklabel* dflt_lbl, 585 int this_ext, daddr_t sector) 586 { 587 struct mbr_partition mbr[MBR_PART_COUNT]; 588 int i; 589 int typ; 590 struct partition *p; 591 592 if (readsects(&d->ll, sector, 1, d->buf, 0)) { 593 #ifdef DISK_DEBUG 594 printf("Error reading MFS sector %"PRId64"\n", sector); 595 #endif 596 return EIO; 597 } 598 if ((uint8_t)d->buf[510] != 0x55 || (uint8_t)d->buf[511] != 0xAA) { 599 return -1; 600 } 601 memcpy(&mbr, MBR_PARTS(d->buf), sizeof(mbr)); 602 for (i = 0; i < MBR_PART_COUNT; i++) { 603 typ = mbr[i].mbrp_type; 604 if (typ == 0) 605 continue; 606 sector = this_ext + mbr[i].mbrp_start; 607 if (dflt_lbl->d_npartitions >= MAXPARTITIONS) 608 continue; 609 p = &dflt_lbl->d_partitions[dflt_lbl->d_npartitions++]; 610 p->p_offset = sector; 611 p->p_size = mbr[i].mbrp_size; 612 p->p_fstype = xlat_mbr_fstype(typ); 613 } 614 return 0; 615 } 616 617 #if defined(EFIBOOT) && defined(SUPPORT_CD9660) 618 static int 619 check_cd9660(struct biosdisk *d) 620 { 621 struct biosdisk_extinfo ed; 622 struct iso_primary_descriptor *vd; 623 daddr_t bno; 624 625 for (bno = 16;; bno++) { 626 if (readsects(&d->ll, bno, 1, d->buf, 0)) 627 return -1; 628 vd = (struct iso_primary_descriptor *)d->buf; 629 if (memcmp(vd->id, ISO_STANDARD_ID, sizeof vd->id) != 0) 630 return -1; 631 if (isonum_711(vd->type) == ISO_VD_END) 632 return -1; 633 if (isonum_711(vd->type) == ISO_VD_PRIMARY) 634 break; 635 } 636 if (isonum_723(vd->logical_block_size) != ISO_DEFAULT_BLOCK_SIZE) 637 return -1; 638 639 if (set_geometry(&d->ll, &ed)) 640 return -1; 641 642 memset(d->part, 0, sizeof(d->part)); 643 d->part[0].fstype = FS_ISO9660; 644 d->part[0].offset = 0; 645 d->part[0].size = ed.totsec; 646 return 0; 647 } 648 #endif 649 650 static int 651 read_label(struct biosdisk *d, daddr_t offset) 652 { 653 struct disklabel dflt_lbl; 654 struct mbr_partition mbr[MBR_PART_COUNT]; 655 struct partition *p; 656 uint32_t sector; 657 int i; 658 int error; 659 int typ; 660 uint32_t ext_base, this_ext, next_ext; 661 #ifdef COMPAT_386BSD_MBRPART 662 int sector_386bsd = -1; 663 #endif 664 665 memset(&dflt_lbl, 0, sizeof(dflt_lbl)); 666 dflt_lbl.d_npartitions = 8; 667 668 d->boff = 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 if (bootinfo == NULL) { 1202 return; 1203 } 1204 BI_ADD(&bi_disk, BTINFO_BOOTDISK, sizeof(bi_disk)); 1205 BI_ADD(&bi_wedge, BTINFO_BOOTWEDGE, sizeof(bi_wedge)); 1206 return; 1207 } 1208 #endif 1209 1210 #ifndef NO_GPT 1211 static daddr_t 1212 raidframe_part_offset(struct biosdisk *d, int part) 1213 { 1214 struct biosdisk raidframe; 1215 daddr_t rf_offset; 1216 daddr_t rf_size; 1217 int i, candidate; 1218 1219 memset(&raidframe, 0, sizeof(raidframe)); 1220 raidframe.ll = d->ll; 1221 1222 rf_offset = d->part[part].offset + RF_PROTECTED_SECTORS; 1223 rf_size = d->part[part].size; 1224 if (read_gpt(&raidframe, rf_offset, rf_size) != 0) 1225 return RF_PROTECTED_SECTORS; 1226 1227 candidate = 0; 1228 for (i = 0; i < BIOSDISKNPART; i++) { 1229 if (raidframe.part[i].size == 0) 1230 continue; 1231 if (raidframe.part[i].fstype == FS_UNUSED) 1232 continue; 1233 #ifndef NO_GPT 1234 if (raidframe.part[i].attr & GPT_ENT_ATTR_BOOTME) 1235 candidate = i; 1236 #endif 1237 } 1238 1239 return RF_PROTECTED_SECTORS + raidframe.part[candidate].offset; 1240 } 1241 #endif 1242 1243 int 1244 biosdisk_open(struct open_file *f, ...) 1245 /* struct open_file *f, int biosdev, int partition */ 1246 { 1247 va_list ap; 1248 struct biosdisk *d; 1249 int biosdev; 1250 int partition; 1251 int error = 0; 1252 1253 va_start(ap, f); 1254 biosdev = va_arg(ap, int); 1255 d = alloc_biosdisk(biosdev); 1256 if (d == NULL) { 1257 error = ENXIO; 1258 goto out; 1259 } 1260 1261 partition = va_arg(ap, int); 1262 bi_disk.biosdev = d->ll.dev; 1263 bi_disk.partition = partition; 1264 bi_disk.labelsector = -1; 1265 1266 bi_wedge.biosdev = d->ll.dev; 1267 bi_wedge.matchblk = -1; 1268 1269 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 1270 error = read_partitions(d, 0, 0); 1271 if (error == -1) { 1272 error = 0; 1273 goto nolabel; 1274 } 1275 if (error) 1276 goto out; 1277 1278 if (partition >= BIOSDISKNPART || 1279 d->part[partition].fstype == FS_UNUSED) { 1280 #ifdef DISK_DEBUG 1281 printf("illegal partition\n"); 1282 #endif 1283 error = EPART; 1284 goto out; 1285 } 1286 1287 d->boff = d->part[partition].offset; 1288 1289 if (d->part[partition].fstype == FS_RAID) 1290 #ifndef NO_GPT 1291 d->boff += raidframe_part_offset(d, partition); 1292 #else 1293 d->boff += RF_PROTECTED_SECTORS; 1294 #endif 1295 1296 #ifdef _STANDALONE 1297 bi_wedge.startblk = d->part[partition].offset; 1298 bi_wedge.nblks = d->part[partition].size; 1299 #endif 1300 1301 nolabel: 1302 #endif 1303 #ifdef DISK_DEBUG 1304 printf("partition @%"PRId64"\n", d->boff); 1305 #endif 1306 1307 #ifdef _STANDALONE 1308 add_biosdisk_bootinfo(); 1309 #endif 1310 1311 f->f_devdata = d; 1312 out: 1313 va_end(ap); 1314 if (error) 1315 dealloc_biosdisk(d); 1316 return error; 1317 } 1318 1319 #ifndef NO_GPT 1320 static int 1321 biosdisk_find_name(const char *fname, int *biosdev, 1322 daddr_t *offset, daddr_t *size) 1323 { 1324 struct biosdisk *d; 1325 char name[MAXDEVNAME + 1]; 1326 char *sep; 1327 #ifndef NO_RAIDFRAME 1328 struct raidframe raidframe[RAIDFRAME_NDEV]; 1329 int raidframe_count = 0; 1330 #endif 1331 int i; 1332 int part; 1333 int ret = -1; 1334 1335 /* Strip leadinf NAME= and cut after the coloon included */ 1336 strlcpy(name, fname + 5, MAXDEVNAME); 1337 sep = strchr(name, ':'); 1338 if (sep) 1339 *sep = '\0'; 1340 1341 for (i = 0; i < MAX_BIOSDISKS; i++) { 1342 d = alloc(sizeof(*d)); 1343 if (d == NULL) { 1344 printf("Out of memory\n"); 1345 goto out; 1346 } 1347 1348 memset(d, 0, sizeof(*d)); 1349 d->ll.dev = 0x80 + i; /* hd/cd */ 1350 if (set_geometry(&d->ll, NULL)) 1351 goto next_disk; 1352 1353 if (d->ll.type != BIOSDISK_TYPE_HD) 1354 goto next_disk; 1355 1356 if (read_partitions(d, 0, 0) != 0) 1357 goto next_disk; 1358 1359 for (part = 0; part < BIOSDISKNPART; part++) { 1360 if (d->part[part].size == 0) 1361 continue; 1362 if (d->part[part].fstype == FS_UNUSED) 1363 continue; 1364 #ifndef NO_RAIDFRAME 1365 if (d->part[part].fstype == FS_RAID) { 1366 raidframe_probe(raidframe, 1367 &raidframe_count, d, part); 1368 /* 1369 * Do not match RAID partition for a name, 1370 * we want to report an inner partition. 1371 */ 1372 continue; 1373 } 1374 #endif 1375 if (d->part[part].part_name != NULL && 1376 strcmp(d->part[part].part_name, name) == 0) { 1377 *biosdev = d->ll.dev; 1378 *offset = d->part[part].offset; 1379 *size = d->part[part].size; 1380 ret = 0; 1381 goto out; 1382 } 1383 1384 } 1385 next_disk: 1386 dealloc_biosdisk(d); 1387 d = NULL; 1388 } 1389 1390 #ifndef NO_RAIDFRAME 1391 for (i = 0; i < raidframe_count; i++) { 1392 int candidate = -1; 1393 1394 if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) { 1395 printf("Out of memory\n"); 1396 goto out; 1397 } 1398 1399 if (read_partitions(d, 1400 raidframe[i].offset + RF_PROTECTED_SECTORS, 1401 raidframe[i].size) != 0) 1402 goto next_raidframe; 1403 1404 for (part = 0; part < BIOSDISKNPART; part++) { 1405 bool bootme = d->part[part].attr & GPT_ENT_ATTR_BOOTME; 1406 if (d->part[part].size == 0) 1407 continue; 1408 if (d->part[part].fstype == FS_UNUSED) 1409 continue; 1410 1411 if (d->part[part].part_name != NULL && 1412 strcmp(d->part[part].part_name, name) == 0) { 1413 *biosdev = raidframe[i].biosdev; 1414 *offset = raidframe[i].offset 1415 + RF_PROTECTED_SECTORS 1416 + d->part[part].offset; 1417 *size = d->part[part].size; 1418 ret = 0; 1419 goto out; 1420 } 1421 if (strcmp(raidframe[i].parent_name, name) == 0) { 1422 if (candidate == -1 || bootme) 1423 candidate = part; 1424 continue; 1425 } 1426 } 1427 1428 if (candidate != -1) { 1429 *biosdev = raidframe[i].biosdev; 1430 *offset = raidframe[i].offset 1431 + RF_PROTECTED_SECTORS 1432 + d->part[candidate].offset; 1433 *size = d->part[candidate].size; 1434 ret = 0; 1435 goto out; 1436 } 1437 1438 next_raidframe: 1439 dealloc_biosdisk(d); 1440 d = NULL; 1441 } 1442 #endif 1443 1444 out: 1445 if (d != NULL) 1446 dealloc_biosdisk(d); 1447 1448 return ret; 1449 } 1450 #endif 1451 1452 #ifndef NO_RAIDFRAME 1453 static int 1454 biosdisk_find_raid(const char *name, int *biosdev, 1455 daddr_t *offset, daddr_t *size) 1456 { 1457 struct biosdisk *d = NULL; 1458 struct raidframe raidframe[RAIDFRAME_NDEV]; 1459 int raidframe_count = 0; 1460 int i; 1461 int target_unit = 0; 1462 int target_part; 1463 int part; 1464 int ret = -1; 1465 1466 if (strstr(name, "raid") != name) 1467 goto out; 1468 1469 #define isnum(c) ((c) >= '0' && (c) <= '9') 1470 i = 4; /* skip leading "raid" */ 1471 if (!isnum(name[i])) 1472 goto out; 1473 do { 1474 target_unit *= 10; 1475 target_unit += name[i++] - '0'; 1476 } while (isnum(name[i])); 1477 1478 #define isvalidpart(c) ((c) >= 'a' && (c) <= 'z') 1479 1480 if (!isvalidpart(name[i])) 1481 goto out; 1482 target_part = name[i] - 'a'; 1483 1484 for (i = 0; i < MAX_BIOSDISKS; i++) { 1485 d = alloc(sizeof(*d)); 1486 if (d == NULL) { 1487 printf("Out of memory\n"); 1488 goto out; 1489 } 1490 1491 memset(d, 0, sizeof(*d)); 1492 d->ll.dev = 0x80 + i; /* hd/cd */ 1493 if (set_geometry(&d->ll, NULL)) 1494 goto next_disk; 1495 1496 if (d->ll.type != BIOSDISK_TYPE_HD) 1497 goto next_disk; 1498 1499 if (read_partitions(d, 0, 0) != 0) 1500 goto next_disk; 1501 1502 for (part = 0; part < BIOSDISKNPART; part++) { 1503 if (d->part[part].size == 0) 1504 continue; 1505 if (d->part[part].fstype != FS_RAID) 1506 continue; 1507 raidframe_probe(raidframe, 1508 &raidframe_count, d, part); 1509 1510 } 1511 next_disk: 1512 dealloc_biosdisk(d); 1513 d = NULL; 1514 } 1515 1516 for (i = 0; i < raidframe_count; i++) { 1517 if (raidframe[i].last_unit != target_unit) 1518 continue; 1519 1520 if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) { 1521 printf("Out of memory\n"); 1522 goto out; 1523 } 1524 1525 if (read_partitions(d, 1526 raidframe[i].offset + RF_PROTECTED_SECTORS, 1527 raidframe[i].size) != 0) 1528 goto next_raidframe; 1529 1530 for (part = 0; part < BIOSDISKNPART; part++) { 1531 if (d->part[part].size == 0) 1532 continue; 1533 if (d->part[part].fstype == FS_UNUSED) 1534 continue; 1535 if (part == target_part) { 1536 *biosdev = raidframe[i].biosdev; 1537 *offset = raidframe[i].offset 1538 + RF_PROTECTED_SECTORS 1539 + d->part[part].offset; 1540 *size = d->part[part].size; 1541 ret = 0; 1542 goto out; 1543 } 1544 } 1545 next_raidframe: 1546 dealloc_biosdisk(d); 1547 d = NULL; 1548 } 1549 out: 1550 if (d != NULL) 1551 dealloc_biosdisk(d); 1552 1553 return ret; 1554 } 1555 #endif 1556 1557 int 1558 biosdisk_open_name(struct open_file *f, const char *name) 1559 { 1560 #if defined(NO_GPT) && defined(NO_RAIDFRAME) 1561 return ENXIO; 1562 #else 1563 struct biosdisk *d = NULL; 1564 int biosdev; 1565 daddr_t offset; 1566 daddr_t size; 1567 int error = -1; 1568 1569 #ifndef NO_GPT 1570 if (strstr(name, "NAME=") == name) 1571 error = biosdisk_find_name(name, &biosdev, &offset, &size); 1572 #endif 1573 #ifndef NO_RAIDFRAME 1574 if (strstr(name, "raid") == name) 1575 error = biosdisk_find_raid(name, &biosdev, &offset, &size); 1576 #endif 1577 1578 if (error != 0) { 1579 printf("%s not found\n", name); 1580 error = ENXIO; 1581 goto out; 1582 } 1583 1584 d = alloc_biosdisk(biosdev); 1585 if (d == NULL) { 1586 error = ENXIO; 1587 goto out; 1588 } 1589 1590 bi_disk.biosdev = d->ll.dev; 1591 bi_disk.partition = 0; 1592 bi_disk.labelsector = -1; 1593 1594 bi_wedge.biosdev = d->ll.dev; 1595 1596 /* 1597 * If we did not get wedge match info from check_gpt() 1598 * compute it now. 1599 */ 1600 if (bi_wedge.matchblk == -1) { 1601 if (readsects(&d->ll, offset, 1, d->buf, 1)) { 1602 #ifdef DISK_DEBUG 1603 printf("Error reading sector at %"PRId64"\n", offset); 1604 #endif 1605 error = EIO; 1606 goto out; 1607 } 1608 1609 bi_wedge.matchblk = offset; 1610 bi_wedge.matchnblks = 1; 1611 1612 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 1613 } 1614 1615 d->boff = offset; 1616 1617 bi_wedge.startblk = offset; 1618 bi_wedge.nblks = size; 1619 1620 #ifdef _STANDALONE 1621 add_biosdisk_bootinfo(); 1622 #endif 1623 1624 f->f_devdata = d; 1625 out: 1626 if (error && d != NULL) 1627 dealloc_biosdisk(d); 1628 return error; 1629 #endif 1630 } 1631 1632 1633 1634 #ifndef LIBSA_NO_FS_CLOSE 1635 int 1636 biosdisk_close(struct open_file *f) 1637 { 1638 struct biosdisk *d = f->f_devdata; 1639 1640 /* let the floppy drive go off */ 1641 if (d->ll.type == BIOSDISK_TYPE_FD) 1642 wait_sec(3); /* 2s is enough on all PCs I found */ 1643 1644 dealloc_biosdisk(d); 1645 f->f_devdata = NULL; 1646 return 0; 1647 } 1648 #endif 1649 1650 int 1651 biosdisk_ioctl(struct open_file *f, u_long cmd, void *arg) 1652 { 1653 return EIO; 1654 } 1655
Indexes created Fri Sep 26 20:09:58 GMT 2025