biosdisk.c revision 1.39
1 /* $NetBSD: biosdisk.c,v 1.39 2011/09/21 08:57:12 gsutre 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 82 #include <lib/libsa/saerrno.h> 83 #include <machine/cpu.h> 84 85 #include "libi386.h" 86 #include "biosdisk_ll.h" 87 #include "biosdisk.h" 88 #ifdef _STANDALONE 89 #include "bootinfo.h" 90 #endif 91 92 #define BUFSIZE 2048 /* must be large enough for a CD sector */ 93 94 #define BIOSDISKNPART 26 95 96 struct biosdisk { 97 struct biosdisk_ll ll; 98 daddr_t boff; 99 char buf[BUFSIZE]; 100 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 101 struct { 102 daddr_t offset; 103 daddr_t size; 104 int fstype; 105 } part[BIOSDISKNPART]; 106 #endif 107 }; 108 109 #ifndef NO_GPT 110 const struct uuid GET_nbsd_raid = GPT_ENT_TYPE_NETBSD_RAIDFRAME; 111 const struct uuid GET_nbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS; 112 const struct uuid GET_nbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS; 113 const struct uuid GET_nbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP; 114 #endif /* NO_GPT */ 115 116 #ifdef _STANDALONE 117 static struct btinfo_bootdisk bi_disk; 118 static struct btinfo_bootwedge bi_wedge; 119 #endif 120 121 #define RF_PROTECTED_SECTORS 64 /* XXX refer to <.../rf_optnames.h> */ 122 123 int 124 biosdisk_strategy(void *devdata, int flag, daddr_t dblk, size_t size, 125 void *buf, size_t *rsize) 126 { 127 struct biosdisk *d; 128 int blks, frag; 129 130 if (flag != F_READ) 131 return EROFS; 132 133 d = (struct biosdisk *) devdata; 134 135 if (d->ll.type == BIOSDISK_TYPE_CD) 136 dblk = dblk * DEV_BSIZE / ISO_DEFAULT_BLOCK_SIZE; 137 138 dblk += d->boff; 139 140 blks = size / d->ll.secsize; 141 if (blks && readsects(&d->ll, dblk, blks, buf, 0)) { 142 if (rsize) 143 *rsize = 0; 144 return EIO; 145 } 146 147 /* needed for CD */ 148 frag = size % d->ll.secsize; 149 if (frag) { 150 if (readsects(&d->ll, dblk + blks, 1, d->buf, 0)) { 151 if (rsize) 152 *rsize = blks * d->ll.secsize; 153 return EIO; 154 } 155 memcpy(buf + blks * d->ll.secsize, d->buf, frag); 156 } 157 158 if (rsize) 159 *rsize = size; 160 return 0; 161 } 162 163 static struct biosdisk * 164 alloc_biosdisk(int biosdev) 165 { 166 struct biosdisk *d; 167 168 d = alloc(sizeof(*d)); 169 if (d == NULL) 170 return NULL; 171 memset(d, 0, sizeof(*d)); 172 173 d->ll.dev = biosdev; 174 if (set_geometry(&d->ll, NULL)) { 175 #ifdef DISK_DEBUG 176 printf("no geometry information\n"); 177 #endif 178 dealloc(d, sizeof(*d)); 179 return NULL; 180 } 181 return d; 182 } 183 184 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 185 static void 186 md5(void *hash, const void *data, size_t len) 187 { 188 MD5_CTX ctx; 189 190 MD5Init(&ctx); 191 MD5Update(&ctx, data, len); 192 MD5Final(hash, &ctx); 193 194 return; 195 } 196 #endif 197 198 #ifndef NO_GPT 199 static bool 200 guid_is_nil(const struct uuid *u) 201 { 202 static const struct uuid nil = { .time_low = 0 }; 203 return (memcmp(u, &nil, sizeof(*u)) == 0 ? true : false); 204 } 205 206 static bool 207 guid_is_equal(const struct uuid *a, const struct uuid *b) 208 { 209 return (memcmp(a, b, sizeof(*a)) == 0 ? true : false); 210 } 211 212 static int 213 check_gpt(struct biosdisk *d, daddr_t sector) 214 { 215 struct gpt_hdr gpth; 216 const struct gpt_ent *ep; 217 const struct uuid *u; 218 daddr_t entblk; 219 size_t size; 220 uint32_t crc; 221 int sectors; 222 int entries; 223 int entry; 224 int i, j; 225 226 /* read in gpt_hdr sector */ 227 if (readsects(&d->ll, sector, 1, d->buf, 1)) { 228 #ifdef DISK_DEBUG 229 printf("Error reading GPT header at %"PRId64"\n", sector); 230 #endif 231 return EIO; 232 } 233 234 gpth = *(const struct gpt_hdr *)d->buf; 235 236 if (memcmp(GPT_HDR_SIG, gpth.hdr_sig, sizeof(gpth.hdr_sig))) 237 return -1; 238 239 crc = gpth.hdr_crc_self; 240 gpth.hdr_crc_self = 0; 241 gpth.hdr_crc_self = crc32(0, (const void *)&gpth, GPT_HDR_SIZE); 242 if (gpth.hdr_crc_self != crc) { 243 return -1; 244 } 245 246 if (gpth.hdr_lba_self != sector) 247 return -1; 248 249 #ifdef _STANDALONE 250 bi_wedge.matchblk = sector; 251 bi_wedge.matchnblks = 1; 252 253 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 254 #endif 255 256 sectors = sizeof(d->buf)/d->ll.secsize; /* sectors per buffer */ 257 entries = sizeof(d->buf)/gpth.hdr_entsz; /* entries per buffer */ 258 entblk = gpth.hdr_lba_table; 259 crc = crc32(0, NULL, 0); 260 261 j = 0; 262 ep = (const struct gpt_ent *)d->buf; 263 264 for (entry = 0; entry < gpth.hdr_entries; entry += entries) { 265 size = MIN(sizeof(d->buf), 266 (gpth.hdr_entries - entry) * gpth.hdr_entsz); 267 entries = size / gpth.hdr_entsz; 268 sectors = roundup(size, d->ll.secsize) / d->ll.secsize; 269 if (readsects(&d->ll, entblk, sectors, d->buf, 1)) 270 return -1; 271 entblk += sectors; 272 crc = crc32(crc, (const void *)d->buf, size); 273 274 for (i = 0; j < BIOSDISKNPART && i < entries; i++, j++) { 275 u = (const struct uuid *)ep[i].ent_type; 276 if (!guid_is_nil(u)) { 277 d->part[j].offset = ep[i].ent_lba_start; 278 d->part[j].size = ep[i].ent_lba_end - 279 ep[i].ent_lba_start + 1; 280 if (guid_is_equal(u, &GET_nbsd_ffs)) 281 d->part[j].fstype = FS_BSDFFS; 282 else if (guid_is_equal(u, &GET_nbsd_lfs)) 283 d->part[j].fstype = FS_BSDLFS; 284 else if (guid_is_equal(u, &GET_nbsd_raid)) 285 d->part[j].fstype = FS_RAID; 286 else if (guid_is_equal(u, &GET_nbsd_swap)) 287 d->part[j].fstype = FS_SWAP; 288 else 289 d->part[j].fstype = FS_OTHER; 290 } 291 } 292 293 } 294 295 if (crc != gpth.hdr_crc_table) { 296 #ifdef DISK_DEBUG 297 printf("GPT table CRC invalid\n"); 298 #endif 299 return -1; 300 } 301 302 return 0; 303 } 304 305 static int 306 read_gpt(struct biosdisk *d) 307 { 308 struct biosdisk_extinfo ed; 309 daddr_t gptsector[2]; 310 int i, error; 311 312 if (d->ll.type != BIOSDISK_TYPE_HD) 313 /* No GPT on floppy and CD */ 314 return -1; 315 316 gptsector[0] = GPT_HDR_BLKNO; 317 if (set_geometry(&d->ll, &ed) == 0 && d->ll.flags & BIOSDISK_INT13EXT) { 318 gptsector[1] = ed.totsec - 1; 319 d->ll.secsize = ed.sbytes; 320 } else { 321 #ifdef DISK_DEBUG 322 printf("Unable to determine extended disk geometry - " 323 "using CHS\n"); 324 #endif 325 /* at least try some other reasonable values then */ 326 gptsector[1] = d->ll.chs_sectors - 1; 327 } 328 329 /* 330 * Use any valid GPT available, do not require both GPTs to be valid 331 */ 332 for (i = 0; i < __arraycount(gptsector); i++) { 333 error = check_gpt(d, gptsector[i]); 334 if (error == 0) 335 break; 336 } 337 338 if (i >= __arraycount(gptsector)) { 339 memset(d->part, 0, sizeof(d->part)); 340 return -1; 341 } 342 343 #ifdef DISK_DEBUG 344 printf("using %s GPT\n", (i == 0) ? "primary" : "secondary"); 345 #endif 346 return 0; 347 } 348 #endif /* !NO_GPT */ 349 350 #ifndef NO_DISKLABEL 351 static void 352 ingest_label(struct biosdisk *d, struct disklabel *lp) 353 { 354 int part; 355 356 memset(d->part, 0, sizeof(d->part)); 357 358 for (part = 0; part < lp->d_npartitions; part++) { 359 if (lp->d_partitions[part].p_size == 0) 360 continue; 361 if (lp->d_partitions[part].p_fstype == FS_UNUSED) 362 continue; 363 d->part[part].fstype = lp->d_partitions[part].p_fstype; 364 d->part[part].offset = lp->d_partitions[part].p_offset; 365 d->part[part].size = lp->d_partitions[part].p_size; 366 } 367 } 368 369 static int 370 check_label(struct biosdisk *d, daddr_t sector) 371 { 372 struct disklabel *lp; 373 374 /* find partition in NetBSD disklabel */ 375 if (readsects(&d->ll, sector + LABELSECTOR, 1, d->buf, 0)) { 376 #ifdef DISK_DEBUG 377 printf("Error reading disklabel\n"); 378 #endif 379 return EIO; 380 } 381 lp = (struct disklabel *) (d->buf + LABELOFFSET); 382 if (lp->d_magic != DISKMAGIC || dkcksum(lp)) { 383 #ifdef DISK_DEBUG 384 printf("warning: no disklabel in sector %"PRId64"\n", sector); 385 #endif 386 return -1; 387 } 388 389 ingest_label(d, lp); 390 391 #ifdef _STANDALONE 392 bi_disk.labelsector = sector + LABELSECTOR; 393 bi_disk.label.type = lp->d_type; 394 memcpy(bi_disk.label.packname, lp->d_packname, 16); 395 bi_disk.label.checksum = lp->d_checksum; 396 397 bi_wedge.matchblk = sector + LABELSECTOR; 398 bi_wedge.matchnblks = 1; 399 400 md5(bi_wedge.matchhash, d->buf, d->ll.secsize); 401 #endif 402 403 return 0; 404 } 405 406 static int 407 read_label(struct biosdisk *d) 408 { 409 struct disklabel dflt_lbl; 410 struct mbr_partition mbr[MBR_PART_COUNT]; 411 struct partition *p; 412 int sector, i; 413 int error; 414 int typ; 415 int ext_base, this_ext, next_ext; 416 #ifdef COMPAT_386BSD_MBRPART 417 int sector_386bsd = -1; 418 #endif 419 420 memset(&dflt_lbl, 0, sizeof(dflt_lbl)); 421 dflt_lbl.d_npartitions = 8; 422 423 d->boff = 0; 424 425 if (d->ll.type != BIOSDISK_TYPE_HD) 426 /* No label on floppy and CD */ 427 return -1; 428 429 /* 430 * find NetBSD Partition in DOS partition table 431 * XXX check magic??? 432 */ 433 ext_base = 0; 434 next_ext = 0; 435 for (;;) { 436 this_ext = ext_base + next_ext; 437 next_ext = 0; 438 if (readsects(&d->ll, this_ext, 1, d->buf, 0)) { 439 #ifdef DISK_DEBUG 440 printf("error reading MBR sector %d\n", this_ext); 441 #endif 442 return EIO; 443 } 444 memcpy(&mbr, ((struct mbr_sector *)d->buf)->mbr_parts, 445 sizeof(mbr)); 446 /* Look for NetBSD partition ID */ 447 for (i = 0; i < MBR_PART_COUNT; i++) { 448 typ = mbr[i].mbrp_type; 449 if (typ == 0) 450 continue; 451 sector = this_ext + mbr[i].mbrp_start; 452 #ifdef DISK_DEBUG 453 printf("ptn type %d in sector %d\n", typ, sector); 454 #endif 455 if (typ == MBR_PTYPE_NETBSD) { 456 error = check_label(d, sector); 457 if (error >= 0) 458 return error; 459 } 460 if (MBR_IS_EXTENDED(typ)) { 461 next_ext = mbr[i].mbrp_start; 462 continue; 463 } 464 #ifdef COMPAT_386BSD_MBRPART 465 if (this_ext == 0 && typ == MBR_PTYPE_386BSD) 466 sector_386bsd = sector; 467 #endif 468 if (this_ext != 0) { 469 if (dflt_lbl.d_npartitions >= MAXPARTITIONS) 470 continue; 471 p = &dflt_lbl.d_partitions[dflt_lbl.d_npartitions++]; 472 } else 473 p = &dflt_lbl.d_partitions[i]; 474 p->p_offset = sector; 475 p->p_size = mbr[i].mbrp_size; 476 p->p_fstype = xlat_mbr_fstype(typ); 477 } 478 if (next_ext == 0) 479 break; 480 if (ext_base == 0) { 481 ext_base = next_ext; 482 next_ext = 0; 483 } 484 } 485 486 sector = 0; 487 #ifdef COMPAT_386BSD_MBRPART 488 if (sector_386bsd != -1) { 489 printf("old BSD partition ID!\n"); 490 sector = sector_386bsd; 491 } 492 #endif 493 494 /* 495 * One of two things: 496 * 1. no MBR 497 * 2. no NetBSD partition in MBR 498 * 499 * We simply default to "start of disk" in this case and 500 * press on. 501 */ 502 error = check_label(d, sector); 503 if (error >= 0) 504 return error; 505 506 /* 507 * Nothing at start of disk, return info from mbr partitions. 508 */ 509 /* XXX fill it to make checksum match kernel one */ 510 dflt_lbl.d_checksum = dkcksum(&dflt_lbl); 511 ingest_label(d, &dflt_lbl); 512 return 0; 513 } 514 #endif /* NO_DISKLABEL */ 515 516 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 517 static int 518 read_partitions(struct biosdisk *d) 519 { 520 int error; 521 522 error = -1; 523 524 #ifndef NO_GPT 525 error = read_gpt(d); 526 if (error == 0) 527 return 0; 528 529 #endif 530 #ifndef NO_DISKLABEL 531 error = read_label(d); 532 533 #endif 534 return error; 535 } 536 #endif 537 538 void 539 biosdisk_probe(void) 540 { 541 struct biosdisk d; 542 struct biosdisk_extinfo ed; 543 uint64_t size; 544 int first; 545 int i; 546 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 547 int part; 548 #endif 549 550 for (i = 0; i < MAX_BIOSDISKS + 2; i++) { 551 first = 1; 552 memset(&d, 0, sizeof(d)); 553 memset(&ed, 0, sizeof(ed)); 554 if (i >= MAX_BIOSDISKS) 555 d.ll.dev = 0x00 + i - MAX_BIOSDISKS; /* fd */ 556 else 557 d.ll.dev = 0x80 + i; /* hd/cd */ 558 if (set_geometry(&d.ll, &ed)) 559 continue; 560 printf("disk "); 561 switch (d.ll.type) { 562 case BIOSDISK_TYPE_CD: 563 printf("cd0\n cd0a\n"); 564 break; 565 case BIOSDISK_TYPE_FD: 566 printf("fd%d\n", d.ll.dev & 0x7f); 567 printf(" fd%da\n", d.ll.dev & 0x7f); 568 break; 569 case BIOSDISK_TYPE_HD: 570 printf("hd%d", d.ll.dev & 0x7f); 571 if (d.ll.flags & BIOSDISK_INT13EXT) { 572 printf(" size "); 573 size = ed.totsec * ed.sbytes; 574 if (size >= (10ULL * 1024 * 1024 * 1024)) 575 printf("%"PRIu64" GB", 576 size / (1024 * 1024 * 1024)); 577 else 578 printf("%"PRIu64" MB", 579 size / (1024 * 1024)); 580 } 581 printf("\n"); 582 break; 583 } 584 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 585 if (d.ll.type != BIOSDISK_TYPE_HD) 586 continue; 587 588 if (read_partitions(&d) != 0) 589 continue; 590 591 for (part = 0; part < BIOSDISKNPART; part++) { 592 if (d.part[part].size == 0) 593 continue; 594 if (d.part[part].fstype == FS_UNUSED) 595 continue; 596 if (first) { 597 printf(" "); 598 first = 0; 599 } 600 printf(" hd%d%c(", d.ll.dev & 0x7f, part + 'a'); 601 if (d.part[part].fstype < FSMAXTYPES) 602 printf("%s", 603 fstypenames[d.part[part].fstype]); 604 else 605 printf("%d", d.part[part].fstype); 606 printf(")"); 607 } 608 #endif 609 if (first == 0) 610 printf("\n"); 611 } 612 } 613 614 /* Determine likely partition for possible sector number of dos 615 * partition. 616 */ 617 618 int 619 biosdisk_findpartition(int biosdev, daddr_t sector) 620 { 621 #if defined(NO_DISKLABEL) && defined(NO_GPT) 622 return 0; 623 #else 624 struct biosdisk *d; 625 int partition = 0; 626 #ifdef DISK_DEBUG 627 printf("looking for partition device %x, sector %"PRId64"\n", biosdev, sector); 628 #endif 629 630 /* Look for netbsd partition that is the dos boot one */ 631 d = alloc_biosdisk(biosdev); 632 if (d == NULL) 633 return 0; 634 635 if (read_partitions(d) == 0) { 636 for (partition = (BIOSDISKNPART-1); --partition;) { 637 if (d->part[partition].fstype == FS_UNUSED) 638 continue; 639 if (d->part[partition].offset == sector) 640 break; 641 } 642 } 643 644 dealloc(d, sizeof(*d)); 645 return partition; 646 #endif /* NO_DISKLABEL && NO_GPT */ 647 } 648 649 #ifdef _STANDALONE 650 static void 651 add_biosdisk_bootinfo(void) 652 { 653 static bool done; 654 655 if (bootinfo == NULL) { 656 done = false; 657 return; 658 } 659 660 if (done) 661 return; 662 663 BI_ADD(&bi_disk, BTINFO_BOOTDISK, sizeof(bi_disk)); 664 BI_ADD(&bi_wedge, BTINFO_BOOTWEDGE, sizeof(bi_wedge)); 665 666 done = true; 667 668 return; 669 } 670 671 #endif 672 673 int 674 biosdisk_open(struct open_file *f, ...) 675 /* struct open_file *f, int biosdev, int partition */ 676 { 677 va_list ap; 678 struct biosdisk *d; 679 int biosdev; 680 int partition; 681 int error = 0; 682 683 va_start(ap, f); 684 biosdev = va_arg(ap, int); 685 d = alloc_biosdisk(biosdev); 686 if (d == NULL) { 687 error = ENXIO; 688 goto out; 689 } 690 691 partition = va_arg(ap, int); 692 #ifdef _STANDALONE 693 bi_disk.biosdev = d->ll.dev; 694 bi_disk.partition = partition; 695 bi_disk.labelsector = -1; 696 697 bi_wedge.biosdev = d->ll.dev; 698 bi_wedge.matchblk = -1; 699 #endif 700 701 #if !defined(NO_DISKLABEL) || !defined(NO_GPT) 702 error = read_partitions(d); 703 if (error == -1) { 704 error = 0; 705 goto nolabel; 706 } 707 if (error) 708 goto out; 709 710 if (partition >= BIOSDISKNPART || 711 d->part[partition].fstype == FS_UNUSED) { 712 #ifdef DISK_DEBUG 713 printf("illegal partition\n"); 714 #endif 715 error = EPART; 716 goto out; 717 } 718 719 d->boff = d->part[partition].offset; 720 721 if (d->part[partition].fstype == FS_RAID) 722 d->boff += RF_PROTECTED_SECTORS; 723 724 #ifdef _STANDALONE 725 bi_wedge.startblk = d->part[partition].offset; 726 bi_wedge.nblks = d->part[partition].size; 727 #endif 728 729 nolabel: 730 #endif 731 #ifdef DISK_DEBUG 732 printf("partition @%"PRId64"\n", d->boff); 733 #endif 734 735 #ifdef _STANDALONE 736 add_biosdisk_bootinfo(); 737 #endif 738 739 f->f_devdata = d; 740 out: 741 va_end(ap); 742 if (error) 743 dealloc(d, sizeof(*d)); 744 return error; 745 } 746 747 #ifndef LIBSA_NO_FS_CLOSE 748 int 749 biosdisk_close(struct open_file *f) 750 { 751 struct biosdisk *d = f->f_devdata; 752 753 /* let the floppy drive go off */ 754 if (d->ll.type == BIOSDISK_TYPE_FD) 755 wait_sec(3); /* 2s is enough on all PCs I found */ 756 757 dealloc(d, sizeof(*d)); 758 f->f_devdata = NULL; 759 return 0; 760 } 761 #endif 762 763 int 764 biosdisk_ioctl(struct open_file *f, u_long cmd, void *arg) 765 { 766 return EIO; 767 } 768
Indexes created Fri Sep 26 08:10:20 GMT 2025