lib/libdisk/disk.c

   1 /*
   2  * ----------------------------------------------------------------------------
   3  * "THE BEER-WARE LICENSE" (Revision 42):
   4  * <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
   5  * can do whatever you want with this stuff. If we meet some day, and you think
   6  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
   7  * ----------------------------------------------------------------------------
   8  *
   9  * $FreeBSD: src/lib/libdisk/disk.c,v 1.50.2.15 2001/12/30 09:56:12 phk Exp $
  10  * $DragonFly: src/lib/libdisk/Attic/disk.c,v 1.2 2003/06/17 04:26:49 dillon Exp $
  11  *
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <unistd.h>
  17 #include <fcntl.h>
  18 #include <string.h>
  19 #include <err.h>
  20 #include <sys/sysctl.h>
  21 #include <sys/types.h>
  22 #include <sys/stat.h>
  23 #include <sys/ioctl.h>
  24 #include <sys/disklabel.h>
  25 #include <sys/diskslice.h>
  26 #include <paths.h>
  27 #include "libdisk.h"
  28
  29 #define DOSPTYP_EXTENDED        5
  30 #define DOSPTYP_ONTRACK         84
  31
  32 const char *chunk_n[] = {
  33         "whole",
  34         "unknown",
  35         "fat",
  36         "freebsd",
  37         "extended",
  38         "part",
  39         "unused",
  40         NULL
  41 };
  42
  43 struct disk *
  44 Open_Disk(const char *name)
  45 {
  46         return Int_Open_Disk(name, 0);
  47 }
  48
  49 #ifndef PC98
  50 static u_int32_t
  51 Read_Int32(u_int32_t *p)
  52 {
  53     u_int8_t *bp = (u_int8_t *)p;
  54     return bp[0] | (bp[1] << 8) | (bp[2] << 16) | (bp[3] << 24);
  55 }
  56 #endif
  57
  58 struct disk *
  59 Int_Open_Disk(const char *name, u_long size)
  60 {
  61         int i,fd;
  62         struct diskslices ds;
  63         struct disklabel dl;
  64         char device[64], *buf;
  65         struct disk *d;
  66         u_long sector_size;
  67 #ifdef PC98
  68         unsigned char *p;
  69 #else
  70         struct dos_partition *dp;
  71         void *p;
  72 #endif
  73         u_long offset = 0;
  74
  75         strcpy(device, _PATH_DEV);
  76         strcat(device, name);
  77
  78         d = (struct disk *)malloc(sizeof *d);
  79         if(!d) return NULL;
  80         memset(d, 0, sizeof *d);
  81
  82         fd = open(device, O_RDONLY);
  83         if (fd < 0) {
  84 #ifdef DEBUG
  85                 warn("open(%s) failed", device);
  86 #endif
  87                 return 0;
  88         }
  89
  90         memset(&dl, 0, sizeof dl);
  91         ioctl(fd, DIOCGDINFO, &dl);
  92         i = ioctl(fd, DIOCGSLICEINFO, &ds);
  93         if (i < 0) {
  94 #ifdef DEBUG
  95                 warn("DIOCGSLICEINFO(%s) failed", device);
  96 #endif
  97                 close(fd);
  98                 return 0;
  99         }
 100
 101 #ifdef DEBUG
 102         for(i = 0; i < ds.dss_nslices; i++)
 103                 if(ds.dss_slices[i].ds_openmask)
 104                         printf("  open(%d)=0x%2x",
 105                                 i, ds.dss_slices[i].ds_openmask);
 106         printf("\n");
 107 #endif
 108
 109 /* XXX --- ds.dss_slice[WHOLE_DISK_SLICE].ds.size of MO disk is wrong!!! */
 110 #ifdef PC98
 111         if (!size)
 112                 size = dl.d_ncylinders * dl.d_ntracks * dl.d_nsectors;
 113 #else
 114         if (!size)
 115                 size = ds.dss_slices[WHOLE_DISK_SLICE].ds_size;
 116 #endif
 117
 118         /* determine media sector size */
 119         if ((buf = malloc(MAX_SEC_SIZE)) == NULL)
 120                 return NULL;
 121         for (sector_size = MIN_SEC_SIZE; sector_size <= MAX_SEC_SIZE; sector_size *= 2) {
 122                 if (read(fd, buf, sector_size) == sector_size) {
 123                         d->sector_size = sector_size;
 124                         break;
 125                 }
 126         }
 127         free (buf);
 128         if (sector_size > MAX_SEC_SIZE)
 129                 return NULL; /* could not determine sector size */
 130
 131 #ifdef PC98
 132         p = (unsigned char*)read_block(fd, 1, sector_size);
 133 #else
 134         p = read_block(fd, 0, sector_size);
 135         dp = (struct dos_partition*)(p + DOSPARTOFF);
 136         for (i = 0; i < NDOSPART; i++) {
 137                 if (Read_Int32(&dp->dp_start) >= size)
 138                     continue;
 139                 if (Read_Int32(&dp->dp_start) + Read_Int32(&dp->dp_size) >= size)
 140                     continue;
 141                 if (!Read_Int32(&dp->dp_size))
 142                     continue;
 143
 144                 if (dp->dp_typ == DOSPTYP_ONTRACK) {
 145                         d->flags |= DISK_ON_TRACK;
 146                         offset = 63;
 147                 }
 148
 149         }
 150         free(p);
 151 #endif
 152
 153         d->bios_sect = dl.d_nsectors;
 154         d->bios_hd = dl.d_ntracks;
 155
 156         d->name = strdup(name);
 157
 158
 159         if (dl.d_ntracks && dl.d_nsectors)
 160                 d->bios_cyl = size / (dl.d_ntracks * dl.d_nsectors);
 161
 162 #ifdef PC98
 163         if (Add_Chunk(d, -offset, size, name, whole, 0, 0, "-"))
 164 #else
 165         if (Add_Chunk(d, -offset, size, name, whole, 0, 0))
 166 #endif
 167 #ifdef DEBUG
 168                 warn("Failed to add 'whole' chunk");
 169 #else
 170                 {}
 171 #endif
 172
 173 #ifdef __i386__
 174 #ifdef PC98
 175         /* XXX -- Quick Hack!
 176          * Check MS-DOS MO
 177          */
 178         if ((*p == 0xf0 || *p == 0xf8) &&
 179             (*(p+1) == 0xff) &&
 180             (*(p+2) == 0xff)) {
 181                 Add_Chunk(d, 0, size, name, fat, 0xa0a0, 0, name);
 182             free(p);
 183             goto pc98_mo_done;
 184         }
 185         free(p);
 186 #endif /* PC98 */
 187         for(i=BASE_SLICE;i<ds.dss_nslices;i++) {
 188                 char sname[20];
 189                 chunk_e ce;
 190                 u_long flags=0;
 191                 int subtype=0;
 192
 193                 if (! ds.dss_slices[i].ds_size)
 194                         continue;
 195                 ds.dss_slices[i].ds_offset -= offset;
 196                 sprintf(sname, "%ss%d", name, i - 1);
 197 #ifdef PC98
 198                 subtype = ds.dss_slices[i].ds_type |
 199                         ds.dss_slices[i].ds_subtype << 8;
 200                 switch (ds.dss_slices[i].ds_type & 0x7f) {
 201                         case 0x14:
 202                                 ce = freebsd;
 203                                 break;
 204                         case 0x20:
 205                         case 0x21:
 206                         case 0x22:
 207                         case 0x23:
 208                         case 0x24:
 209                                 ce = fat;
 210                                 break;
 211 #else /* IBM-PC */
 212                 subtype = ds.dss_slices[i].ds_type;
 213                 switch (ds.dss_slices[i].ds_type) {
 214                         case 0xa5:
 215                                 ce = freebsd;
 216                                 break;
 217                         case 0x1:
 218                         case 0x6:
 219                         case 0x4:
 220                         case 0xb:
 221                         case 0xc:
 222                         case 0xe:
 223                                 ce = fat;
 224                                 break;
 225                         case DOSPTYP_EXTENDED:
 226                         case 0xf:
 227                                 ce = extended;
 228                                 break;
 229 #endif
 230                         default:
 231                                 ce = unknown;
 232                                 break;
 233                 }
 234 #ifdef PC98
 235                 if (Add_Chunk(d, ds.dss_slices[i].ds_offset,
 236                         ds.dss_slices[i].ds_size, sname, ce, subtype, flags,
 237                         ds.dss_slices[i].ds_name))
 238 #else
 239                 if (Add_Chunk(d, ds.dss_slices[i].ds_offset,
 240                         ds.dss_slices[i].ds_size, sname, ce, subtype, flags))
 241 #endif
 242 #ifdef DEBUG
 243                         warn("failed to add chunk for slice %d", i - 1);
 244 #else
 245                         {}
 246 #endif
 247
 248 #ifdef PC98
 249                 if ((ds.dss_slices[i].ds_type & 0x7f) != 0x14)
 250 #else
 251                 if (ds.dss_slices[i].ds_type != 0xa5)
 252 #endif
 253                         continue;
 254                 {
 255                 struct disklabel dl;
 256                 char pname[20];
 257                 int j, k;
 258
 259                 strcpy(pname, _PATH_DEV);
 260                 strcat(pname, sname);
 261                 j = open(pname, O_RDONLY);
 262                 if (j < 0) {
 263 #ifdef DEBUG
 264                         warn("open(%s)", pname);
 265 #endif
 266                         continue;
 267                 }
 268                 k = ioctl(j, DIOCGDINFO, &dl);
 269                 if (k < 0) {
 270 #ifdef DEBUG
 271                         warn("ioctl(%s, DIOCGDINFO)", pname);
 272 #endif
 273                         close(j);
 274                         continue;
 275                 }
 276                 close(j);
 277
 278                 for(j = 0; j <= dl.d_npartitions; j++) {
 279                         if (j == RAW_PART)
 280                                 continue;
 281                         if (j == 3)
 282                                 continue;
 283                         if (j == dl.d_npartitions) {
 284                                 j = 3;
 285                                 dl.d_npartitions = 0;
 286                         }
 287                         if (!dl.d_partitions[j].p_size)
 288                                 continue;
 289                         if (dl.d_partitions[j].p_size +
 290                             dl.d_partitions[j].p_offset >
 291                             ds.dss_slices[i].ds_size)
 292                                 continue;
 293                         sprintf(pname, "%s%c", sname, j + 'a');
 294                         if (Add_Chunk(d,
 295                                 dl.d_partitions[j].p_offset +
 296                                 ds.dss_slices[i].ds_offset,
 297                                 dl.d_partitions[j].p_size,
 298                                 pname,part,
 299                                 dl.d_partitions[j].p_fstype,
 300 #ifdef PC98
 301                                 0,
 302                                 ds.dss_slices[i].ds_name) && j != 3)
 303 #else
 304                                 0) && j != 3)
 305 #endif
 306 #ifdef DEBUG
 307                                 warn(
 308                         "Failed to add chunk for partition %c [%lu,%lu]",
 309                         j + 'a', dl.d_partitions[j].p_offset,
 310                         dl.d_partitions[j].p_size);
 311 #else
 312                                 {}
 313 #endif
 314                 }
 315                 }
 316         }
 317 #endif /* __i386__ */
 318 #ifdef __alpha__
 319         {
 320                 struct disklabel dl;
 321                 char pname[20];
 322                 int j,k;
 323
 324                 strcpy(pname, _PATH_DEV);
 325                 strcat(pname, name);
 326                 j = open(pname, O_RDONLY);
 327                 if (j < 0) {
 328 #ifdef DEBUG
 329                         warn("open(%s)", pname);
 330 #endif
 331                         goto nolabel;
 332                 }
 333                 k = ioctl(j, DIOCGDINFO, &dl);
 334                 if (k < 0) {
 335 #ifdef DEBUG
 336                         warn("ioctl(%s, DIOCGDINFO)", pname);
 337 #endif
 338                         close(j);
 339                         goto nolabel;
 340                 }
 341                 close(j);
 342                 All_FreeBSD(d, 1);
 343
 344                 for(j = 0; j <= dl.d_npartitions; j++) {
 345                         if (j == RAW_PART)
 346                                 continue;
 347                         if (j == 3)
 348                                 continue;
 349                         if (j == dl.d_npartitions) {
 350                                 j = 3;
 351                                 dl.d_npartitions = 0;
 352                         }
 353                         if (!dl.d_partitions[j].p_size)
 354                                 continue;
 355                         if (dl.d_partitions[j].p_size +
 356                             dl.d_partitions[j].p_offset >
 357                             ds.dss_slices[WHOLE_DISK_SLICE].ds_size)
 358                                 continue;
 359                         sprintf(pname, "%s%c", name, j + 'a');
 360                         if (Add_Chunk(d,
 361                                       dl.d_partitions[j].p_offset,
 362                                       dl.d_partitions[j].p_size,
 363                                       pname,part,
 364                                       dl.d_partitions[j].p_fstype,
 365                                       0) && j != 3)
 366 #ifdef DEBUG
 367                                 warn(
 368                                         "Failed to add chunk for partition %c [%lu,%lu]",
 369                                         j + 'a', dl.d_partitions[j].p_offset,
 370                                         dl.d_partitions[j].p_size);
 371 #else
 372                         {}
 373 #endif
 374                 }
 375         nolabel:;
 376         }
 377 #endif /* __alpha__ */
 378 #ifdef PC98
 379 pc98_mo_done:
 380 #endif
 381         close(fd);
 382         Fixup_Names(d);
 383         return d;
 384 }
 385
 386 void
 387 Debug_Disk(struct disk *d)
 388 {
 389         printf("Debug_Disk(%s)", d->name);
 390         printf("  flags=%lx", d->flags);
 391 #if 0
 392         printf("  real_geom=%lu/%lu/%lu", d->real_cyl, d->real_hd, d->real_sect);
 393 #endif
 394         printf("  bios_geom=%lu/%lu/%lu = %lu\n",
 395                 d->bios_cyl, d->bios_hd, d->bios_sect,
 396                 d->bios_cyl * d->bios_hd * d->bios_sect);
 397 #if defined(PC98)
 398         printf("  boot1=%p, boot2=%p, bootipl=%p, bootmenu=%p\n",
 399                 d->boot1, d->boot2, d->bootipl, d->bootmenu);
 400 #elif defined(__i386__)
 401         printf("  boot1=%p, boot2=%p, bootmgr=%p\n",
 402                 d->boot1, d->boot2, d->bootmgr);
 403 #elif defined(__alpha__)
 404         printf("  boot1=%p, bootmgr=%p\n",
 405                 d->boot1, d->bootmgr);
 406 #endif
 407         Debug_Chunk(d->chunks);
 408 }
 409
 410 void
 411 Free_Disk(struct disk *d)
 412 {
 413         if(d->chunks) Free_Chunk(d->chunks);
 414         if(d->name) free(d->name);
 415 #ifdef PC98
 416         if(d->bootipl) free(d->bootipl);
 417         if(d->bootmenu) free(d->bootmenu);
 418 #else
 419         if(d->bootmgr) free(d->bootmgr);
 420 #endif
 421         if(d->boot1) free(d->boot1);
 422 #if defined(__i386__)
 423         if(d->boot2) free(d->boot2);
 424 #endif
 425         free(d);
 426 }
 427
 428 struct disk *
 429 Clone_Disk(struct disk *d)
 430 {
 431         struct disk *d2;
 432
 433         d2 = (struct disk*) malloc(sizeof *d2);
 434         if(!d2) return NULL;
 435         *d2 = *d;
 436         d2->name = strdup(d2->name);
 437         d2->chunks = Clone_Chunk(d2->chunks);
 438 #ifdef PC98
 439         if(d2->bootipl) {
 440                 d2->bootipl = malloc(d2->bootipl_size);
 441                 memcpy(d2->bootipl, d->bootipl, d2->bootipl_size);
 442         }
 443         if(d2->bootmenu) {
 444                 d2->bootmenu = malloc(d2->bootmenu_size);
 445                 memcpy(d2->bootmenu, d->bootmenu, d2->bootmenu_size);
 446         }
 447 #else
 448         if(d2->bootmgr) {
 449                 d2->bootmgr = malloc(d2->bootmgr_size);
 450                 memcpy(d2->bootmgr, d->bootmgr, d2->bootmgr_size);
 451         }
 452 #endif
 453 #if defined(__i386__)
 454         if(d2->boot1) {
 455                 d2->boot1 = malloc(512);
 456                 memcpy(d2->boot1, d->boot1, 512);
 457         }
 458         if(d2->boot2) {
 459                 d2->boot2 = malloc(512 * 15);
 460                 memcpy(d2->boot2, d->boot2, 512 * 15);
 461         }
 462 #elif defined(__alpha__)
 463         if(d2->boot1) {
 464                 d2->boot1 = malloc(512 * 15);
 465                 memcpy(d2->boot1, d->boot1, 512 * 15);
 466         }
 467 #endif
 468         return d2;
 469 }
 470
 471 #if 0
 472 void
 473 Collapse_Disk(struct disk *d)
 474 {
 475
 476         while(Collapse_Chunk(d, d->chunks))
 477                 ;
 478 }
 479 #endif
 480
 481 #ifdef PC98
 482 static char * device_list[] = {"wd", "aacd", "ad", "da", "afd", "fla", "idad", "mlxd", "amrd", "twed", "ar", "fd", 0};
 483 #else
 484 static char * device_list[] = {"aacd", "ad", "da", "afd", "fla", "idad", "mlxd", "amrd", "twed", "ar", "fd", 0};
 485 #endif
 486
 487 int qstrcmp(const void* a, const void* b) {
 488
 489         char *str1 = *(char**)a;
 490         char *str2 = *(char**)b;
 491         return strcmp(str1, str2);
 492
 493 }
 494
 495 char **
 496 Disk_Names()
 497 {
 498     int i,j,disk_cnt;
 499     char disk[25];
 500     char diskname[25];
 501     struct stat st;
 502     struct diskslices ds;
 503     int fd;
 504     static char **disks;
 505     int error;
 506     size_t listsize;
 507     char *disklist, **dp;
 508
 509     disks = malloc(sizeof *disks * (1 + MAX_NO_DISKS));
 510     memset(disks,0,sizeof *disks * (1 + MAX_NO_DISKS));
 511 #if !defined(PC98) && !defined(KERN_DISKS_BROKEN)
 512     error = sysctlbyname("kern.disks", NULL, &listsize, NULL, 0);
 513     if (!error) {
 514             disklist = (char *)malloc(listsize);
 515             error = sysctlbyname("kern.disks", disklist, &listsize, NULL, 0);
 516             if (error)
 517                     return NULL;
 518             disk_cnt = 0;
 519             for (dp = disks; ((*dp = strsep(&disklist, " ")) != NULL) &&
 520                          disk_cnt < MAX_NO_DISKS; disk_cnt++, dp++);
 521     } else {
 522     warn("kern.disks sysctl not available");
 523 #endif
 524     disk_cnt = 0;
 525         for (j = 0; device_list[j]; j++) {
 526                 if(disk_cnt >= MAX_NO_DISKS)
 527                         break;
 528                 for (i = 0; i < MAX_NO_DISKS; i++) {
 529                         sprintf(diskname, "%s%d", device_list[j], i);
 530                         sprintf(disk, _PATH_DEV"%s", diskname);
 531                         if (stat(disk, &st) || !(st.st_mode & S_IFCHR))
 532                                 continue;
 533                         if ((fd = open(disk, O_RDWR)) == -1)
 534                                 continue;
 535                         if (ioctl(fd, DIOCGSLICEINFO, &ds) == -1) {
 536 #ifdef DEBUG
 537                                 warn("DIOCGSLICEINFO %s", disk);
 538 #endif
 539                                 close(fd);
 540                                 continue;
 541                         }
 542                         close(fd);
 543                         disks[disk_cnt++] = strdup(diskname);
 544                         if(disk_cnt >= MAX_NO_DISKS)
 545                                 break;
 546                 }
 547         }
 548 #if !defined(PC98) && !defined(KERN_DISKS_BROKEN)
 549     }
 550 #endif
 551     qsort(disks, disk_cnt, sizeof(char*), qstrcmp);
 552
 553     return disks;
 554 }
 555
 556 #ifdef PC98
 557 void
 558 Set_Boot_Mgr(struct disk *d, const u_char *bootipl, const size_t bootipl_size,
 559              const u_char *bootmenu, const size_t bootmenu_size)
 560 #else
 561 void
 562 Set_Boot_Mgr(struct disk *d, const u_char *b, const size_t s)
 563 #endif
 564 {
 565 #ifdef PC98
 566         if (bootipl_size % d->sector_size != 0)
 567                 return;
 568         if (d->bootipl)
 569                 free(d->bootipl);
 570         if (!bootipl) {
 571                 d->bootipl = NULL;
 572         } else {
 573                 d->bootipl_size = bootipl_size;
 574                 d->bootipl = malloc(bootipl_size);
 575                 if(!d->bootipl) return;
 576                 memcpy(d->bootipl, bootipl, bootipl_size);
 577         }
 578
 579         if (bootmenu_size % d->sector_size != 0)
 580                 return;
 581         if (d->bootmenu)
 582                 free(d->bootmenu);
 583         if (!bootmenu) {
 584                 d->bootmenu = NULL;
 585         } else {
 586                 d->bootmenu_size = bootmenu_size;
 587                 d->bootmenu = malloc(bootmenu_size);
 588                 if(!d->bootmenu) return;
 589                 memcpy(d->bootmenu, bootmenu, bootmenu_size);
 590         }
 591 #else
 592         if (s % d->sector_size != 0)
 593                 return;
 594         if (d->bootmgr)
 595                 free(d->bootmgr);
 596         if (!b) {
 597                 d->bootmgr = NULL;
 598         } else {
 599                 d->bootmgr_size = s;
 600                 d->bootmgr = malloc(s);
 601                 if(!d->bootmgr) return;
 602                 memcpy(d->bootmgr, b, s);
 603         }
 604 #endif
 605 }
 606
 607 int
 608 Set_Boot_Blocks(struct disk *d, const u_char *b1, const u_char *b2)
 609 {
 610 #if defined(__i386__)
 611         if (d->boot1) free(d->boot1);
 612         d->boot1 = malloc(512);
 613         if(!d->boot1) return -1;
 614         memcpy(d->boot1, b1, 512);
 615         if (d->boot2) free(d->boot2);
 616         d->boot2 = malloc(15 * 512);
 617         if(!d->boot2) return -1;
 618         memcpy(d->boot2, b2, 15 * 512);
 619 #elif defined(__alpha__)
 620         if (d->boot1) free(d->boot1);
 621         d->boot1 = malloc(15 * 512);
 622         if(!d->boot1) return -1;
 623         memcpy(d->boot1, b1, 15 * 512);
 624 #endif
 625         return 0;
 626 }
 627
 628 const char *
 629 slice_type_name( int type, int subtype )
 630 {
 631         switch (type) {
 632                 case 0:         return "whole";
 633 #ifndef PC98
 634                 case 1:         switch (subtype) {
 635                                         case 1:         return "fat (12-bit)";
 636                                         case 2:         return "XENIX /";
 637                                         case 3:         return "XENIX /usr";
 638                                         case 4:         return "fat (16-bit,<=32Mb)";
 639                                         case 5:         return "extended DOS";
 640                                         case 6:         return "fat (16-bit,>32Mb)";
 641                                         case 7:         return "NTFS/HPFS/QNX";
 642                                         case 8:         return "AIX bootable";
 643                                         case 9:         return "AIX data";
 644                                         case 10:        return "OS/2 bootmgr";
 645                                         case 11:        return "fat (32-bit)";
 646                                         case 12:        return "fat (32-bit,LBA)";
 647                                         case 14:        return "fat (16-bit,>32Mb,LBA)";
 648                                         case 15:        return "extended DOS, LBA";
 649                                         case 18:        return "Compaq Diagnostic";
 650                                         case 84:        return "OnTrack diskmgr";
 651                                         case 100:       return "Netware 2.x";
 652                                         case 101:       return "Netware 3.x";
 653                                         case 115:       return "SCO UnixWare";
 654                                         case 128:       return "Minix 1.1";
 655                                         case 129:       return "Minix 1.5";
 656                                         case 130:       return "linux_swap";
 657                                         case 131:       return "ext2fs";
 658                                         case 166:       return "OpenBSD FFS";   /* 0xA6 */
 659                                         case 169:       return "NetBSD FFS";    /* 0xA9 */
 660                                         case 182:       return "OpenBSD";               /* dedicated */
 661                                         case 183:       return "bsd/os";
 662                                         case 184:       return "bsd/os swap";
 663                                         default:        return "unknown";
 664                                 }
 665 #endif
 666                 case 2:         return "fat";
 667                 case 3:         switch (subtype) {
 668 #ifdef  PC98
 669                                         case 0xc494:    return "freebsd";
 670 #else
 671                                         case 165:       return "freebsd";
 672 #endif
 673                                         default:        return "unknown";
 674                                 }
 675 #ifndef PC98
 676                 case 4:         return "extended";
 677                 case 5:         return "part";
 678                 case 6:         return "unused";
 679 #endif
 680                 default:        return "unknown";
 681         }
 682 }