Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 | #if ENABLE_FEATURE_SGI_LABEL
/*
* Copyright (C) Andreas Neuper, Sep 1998.
* This file may be modified and redistributed under
* the terms of the GNU Public License.
*/
#define SGI_VOLHDR 0x00
/* 1 and 2 were used for drive types no longer supported by SGI */
#define SGI_SWAP 0x03
/* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */
#define SGI_VOLUME 0x06
#define SGI_EFS 0x07
#define SGI_LVOL 0x08
#define SGI_RLVOL 0x09
#define SGI_XFS 0x0a
#define SGI_XFSLOG 0x0b
#define SGI_XLV 0x0c
#define SGI_XVM 0x0d
#define SGI_ENTIRE_DISK SGI_VOLUME
struct device_parameter { /* 48 bytes */
unsigned char skew;
unsigned char gap1;
unsigned char gap2;
unsigned char sparecyl;
unsigned short pcylcount;
unsigned short head_vol0;
unsigned short ntrks; /* tracks in cyl 0 or vol 0 */
unsigned char cmd_tag_queue_depth;
unsigned char unused0;
unsigned short unused1;
unsigned short nsect; /* sectors/tracks in cyl 0 or vol 0 */
unsigned short bytes;
unsigned short ilfact;
unsigned int flags; /* controller flags */
unsigned int datarate;
unsigned int retries_on_error;
unsigned int ms_per_word;
unsigned short xylogics_gap1;
unsigned short xylogics_syncdelay;
unsigned short xylogics_readdelay;
unsigned short xylogics_gap2;
unsigned short xylogics_readgate;
unsigned short xylogics_writecont;
};
/*
* controller flags
*/
#define SECTOR_SLIP 0x01
#define SECTOR_FWD 0x02
#define TRACK_FWD 0x04
#define TRACK_MULTIVOL 0x08
#define IGNORE_ERRORS 0x10
#define RESEEK 0x20
#define ENABLE_CMDTAGQ 0x40
typedef struct {
unsigned int magic; /* expect SGI_LABEL_MAGIC */
unsigned short boot_part; /* active boot partition */
unsigned short swap_part; /* active swap partition */
unsigned char boot_file[16]; /* name of the bootfile */
struct device_parameter devparam; /* 1 * 48 bytes */
struct volume_directory { /* 15 * 16 bytes */
unsigned char vol_file_name[8]; /* a character array */
unsigned int vol_file_start; /* number of logical block */
unsigned int vol_file_size; /* number of bytes */
} directory[15];
struct sgi_partinfo { /* 16 * 12 bytes */
unsigned int num_sectors; /* number of blocks */
unsigned int start_sector; /* must be cylinder aligned */
unsigned int id;
} partitions[16];
unsigned int csum;
unsigned int fillbytes;
} sgi_partition;
typedef struct {
unsigned int magic; /* looks like a magic number */
unsigned int a2;
unsigned int a3;
unsigned int a4;
unsigned int b1;
unsigned short b2;
unsigned short b3;
unsigned int c[16];
unsigned short d[3];
unsigned char scsi_string[50];
unsigned char serial[137];
unsigned short check1816;
unsigned char installer[225];
} sgiinfo;
#define SGI_LABEL_MAGIC 0x0be5a941
#define SGI_LABEL_MAGIC_SWAPPED 0x41a9e50b
#define SGI_INFO_MAGIC 0x00072959
#define SGI_INFO_MAGIC_SWAPPED 0x59290700
#define SGI_SSWAP16(x) (sgi_other_endian ? fdisk_swap16(x) : (uint16_t)(x))
#define SGI_SSWAP32(x) (sgi_other_endian ? fdisk_swap32(x) : (uint32_t)(x))
#define sgilabel ((sgi_partition *)MBRbuffer)
#define sgiparam (sgilabel->devparam)
/*
*
* fdisksgilabel.c
*
* Copyright (C) Andreas Neuper, Sep 1998.
* This file may be modified and redistributed under
* the terms of the GNU Public License.
*
* Sat Mar 20 EST 1999 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
* Internationalization
*/
static int sgi_other_endian;
static int debug;
static short sgi_volumes = 1;
/*
* only dealing with free blocks here
*/
typedef struct {
unsigned int first;
unsigned int last;
} freeblocks;
static freeblocks freelist[17]; /* 16 partitions can produce 17 vacant slots */
static void
setfreelist(int i, unsigned int f, unsigned int l)
{
freelist[i].first = f;
freelist[i].last = l;
}
static void
add2freelist(unsigned int f, unsigned int l)
{
int i;
for (i = 0; i < 17; i++)
if (freelist[i].last == 0)
break;
setfreelist(i, f, l);
}
static void
clearfreelist(void)
{
int i;
for (i = 0; i < 17; i++)
setfreelist(i, 0, 0);
}
static unsigned int
isinfreelist(unsigned int b)
{
int i;
for (i = 0; i < 17; i++)
if (freelist[i].first <= b && freelist[i].last >= b)
return freelist[i].last;
return 0;
}
/* return last vacant block of this stride (never 0). */
/* the '>=' is not quite correct, but simplifies the code */
/*
* end of free blocks section
*/
static const char *const sgi_sys_types[] = {
/* SGI_VOLHDR */ "\x00" "SGI volhdr" ,
/* 0x01 */ "\x01" "SGI trkrepl" ,
/* 0x02 */ "\x02" "SGI secrepl" ,
/* SGI_SWAP */ "\x03" "SGI raw" ,
/* 0x04 */ "\x04" "SGI bsd" ,
/* 0x05 */ "\x05" "SGI sysv" ,
/* SGI_ENTIRE_DISK */ "\x06" "SGI volume" ,
/* SGI_EFS */ "\x07" "SGI efs" ,
/* 0x08 */ "\x08" "SGI lvol" ,
/* 0x09 */ "\x09" "SGI rlvol" ,
/* SGI_XFS */ "\x0a" "SGI xfs" ,
/* SGI_XFSLOG */ "\x0b" "SGI xfslog" ,
/* SGI_XLV */ "\x0c" "SGI xlv" ,
/* SGI_XVM */ "\x0d" "SGI xvm" ,
/* LINUX_SWAP */ "\x82" "Linux swap" ,
/* LINUX_NATIVE */ "\x83" "Linux native",
/* LINUX_LVM */ "\x8d" "Linux LVM" ,
/* LINUX_RAID */ "\xfd" "Linux RAID" ,
NULL
};
static int
sgi_get_nsect(void)
{
return SGI_SSWAP16(sgilabel->devparam.nsect);
}
static int
sgi_get_ntrks(void)
{
return SGI_SSWAP16(sgilabel->devparam.ntrks);
}
static unsigned int
two_s_complement_32bit_sum(unsigned int* base, int size /* in bytes */)
{
int i = 0;
unsigned int sum = 0;
size /= sizeof(unsigned int);
for (i = 0; i < size; i++)
sum -= SGI_SSWAP32(base[i]);
return sum;
}
void BUG_bad_sgi_partition_size(void);
static int
check_sgi_label(void)
{
if (sizeof(sgi_partition) > 512) {
/* According to MIPS Computer Systems, Inc the label
* must not contain more than 512 bytes */
BUG_bad_sgi_partition_size();
}
if (sgilabel->magic != SGI_LABEL_MAGIC
&& sgilabel->magic != SGI_LABEL_MAGIC_SWAPPED
) {
current_label_type = label_dos;
return 0;
}
sgi_other_endian = (sgilabel->magic == SGI_LABEL_MAGIC_SWAPPED);
/*
* test for correct checksum
*/
if (two_s_complement_32bit_sum((unsigned int*)sgilabel,
sizeof(*sgilabel))) {
printf("Detected sgi disklabel with wrong checksum\n");
}
update_units();
current_label_type = label_sgi;
partitions = 16;
sgi_volumes = 15;
return 1;
}
static unsigned int
sgi_get_start_sector(int i)
{
return SGI_SSWAP32(sgilabel->partitions[i].start_sector);
}
static unsigned int
sgi_get_num_sectors(int i)
{
return SGI_SSWAP32(sgilabel->partitions[i].num_sectors);
}
static int
sgi_get_sysid(int i)
{
return SGI_SSWAP32(sgilabel->partitions[i].id);
}
static int
sgi_get_bootpartition(void)
{
return SGI_SSWAP16(sgilabel->boot_part);
}
static int
sgi_get_swappartition(void)
{
return SGI_SSWAP16(sgilabel->swap_part);
}
static void
sgi_list_table(int xtra)
{
int i, w, wd;
int kpi = 0; /* kernel partition ID */
if (xtra) {
printf("\nDisk %s (SGI disk label): %d heads, %d sectors\n"
"%d cylinders, %d physical cylinders\n"
"%d extra sects/cyl, interleave %d:1\n"
"%s\n"
"Units = %s of %d * 512 bytes\n\n",
disk_device, heads, sectors, cylinders,
SGI_SSWAP16(sgiparam.pcylcount),
SGI_SSWAP16(sgiparam.sparecyl),
SGI_SSWAP16(sgiparam.ilfact),
(char *)sgilabel,
str_units(PLURAL), units_per_sector);
} else {
printf("\nDisk %s (SGI disk label): "
"%d heads, %d sectors, %d cylinders\n"
"Units = %s of %d * 512 bytes\n\n",
disk_device, heads, sectors, cylinders,
str_units(PLURAL), units_per_sector );
}
w = strlen(disk_device);
wd = sizeof("Device") - 1;
if (w < wd)
w = wd;
printf("----- partitions -----\n"
"Pt# %*s Info Start End Sectors Id System\n",
w + 2, "Device");
for (i = 0; i < partitions; i++) {
if (sgi_get_num_sectors(i) || debug ) {
uint32_t start = sgi_get_start_sector(i);
uint32_t len = sgi_get_num_sectors(i);
kpi++; /* only count nonempty partitions */
printf(
"%2d: %s %4s %9ld %9ld %9ld %2x %s\n",
/* fdisk part number */ i+1,
/* device */ partname(disk_device, kpi, w+3),
/* flags */ (sgi_get_swappartition() == i) ? "swap" :
/* flags */ (sgi_get_bootpartition() == i) ? "boot" : " ",
/* start */ (long) scround(start),
/* end */ (long) scround(start+len)-1,
/* no odd flag on end */(long) len,
/* type id */ sgi_get_sysid(i),
/* type name */ partition_type(sgi_get_sysid(i)));
}
}
printf("----- Bootinfo -----\nBootfile: %s\n"
"----- Directory Entries -----\n",
sgilabel->boot_file);
for (i = 0; i < sgi_volumes; i++) {
if (sgilabel->directory[i].vol_file_size) {
uint32_t start = SGI_SSWAP32(sgilabel->directory[i].vol_file_start);
uint32_t len = SGI_SSWAP32(sgilabel->directory[i].vol_file_size);
unsigned char *name = sgilabel->directory[i].vol_file_name;
printf("%2d: %-10s sector%5u size%8u\n",
i, (char*)name, (unsigned int) start, (unsigned int) len);
}
}
}
static void
sgi_set_bootpartition(int i)
{
sgilabel->boot_part = SGI_SSWAP16(((short)i));
}
static unsigned int
sgi_get_lastblock(void)
{
return heads * sectors * cylinders;
}
static void
sgi_set_swappartition(int i)
{
sgilabel->swap_part = SGI_SSWAP16(((short)i));
}
static int
sgi_check_bootfile(const char* aFile)
{
if (strlen(aFile) < 3) /* "/a\n" is minimum */ {
printf("\nInvalid Bootfile!\n"
"\tThe bootfile must be an absolute non-zero pathname,\n"
"\te.g. \"/unix\" or \"/unix.save\".\n");
return 0;
}
if (strlen(aFile) > 16) {
printf("\nName of Bootfile too long (>16 bytes)\n");
return 0;
}
if (aFile[0] != '/') {
printf("\nBootfile must have a fully qualified pathname\n");
return 0;
}
if (strncmp(aFile, (char*)sgilabel->boot_file, 16)) {
printf("\nBe aware, that the bootfile is not checked for existence.\n"
"\tSGI's default is \"/unix\" and for backup \"/unix.save\".\n");
/* filename is correct and did change */
return 1;
}
return 0; /* filename did not change */
}
static const char *
sgi_get_bootfile(void)
{
return (char*)sgilabel->boot_file;
}
static void
sgi_set_bootfile(const char* aFile)
{
int i = 0;
if (sgi_check_bootfile(aFile)) {
while (i < 16) {
if ((aFile[i] != '\n') /* in principle caught again by next line */
&& (strlen(aFile) > i))
sgilabel->boot_file[i] = aFile[i];
else
sgilabel->boot_file[i] = 0;
i++;
}
printf("\n\tBootfile is changed to \"%s\"\n", sgilabel->boot_file);
}
}
static void
create_sgiinfo(void)
{
/* I keep SGI's habit to write the sgilabel to the second block */
sgilabel->directory[0].vol_file_start = SGI_SSWAP32(2);
sgilabel->directory[0].vol_file_size = SGI_SSWAP32(sizeof(sgiinfo));
strncpy((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8);
}
static sgiinfo *fill_sgiinfo(void);
static void
sgi_write_table(void)
{
sgilabel->csum = 0;
sgilabel->csum = SGI_SSWAP32(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)));
assert(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)) == 0);
if (lseek(fd, 0, SEEK_SET) < 0)
fdisk_fatal(unable_to_seek);
if (write(fd, sgilabel, SECTOR_SIZE) != SECTOR_SIZE)
fdisk_fatal(unable_to_write);
if (!strncmp((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8)) {
/*
* keep this habit of first writing the "sgilabel".
* I never tested whether it works without (AN 981002).
*/
sgiinfo *info = fill_sgiinfo();
int infostartblock = SGI_SSWAP32(sgilabel->directory[0].vol_file_start);
if (lseek(fd, infostartblock*SECTOR_SIZE, SEEK_SET) < 0)
fdisk_fatal(unable_to_seek);
if (write(fd, info, SECTOR_SIZE) != SECTOR_SIZE)
fdisk_fatal(unable_to_write);
free(info);
}
}
static int
compare_start(int *x, int *y)
{
/*
* sort according to start sectors
* and prefers largest partition:
* entry zero is entire disk entry
*/
unsigned int i = *x;
unsigned int j = *y;
unsigned int a = sgi_get_start_sector(i);
unsigned int b = sgi_get_start_sector(j);
unsigned int c = sgi_get_num_sectors(i);
unsigned int d = sgi_get_num_sectors(j);
if (a == b)
return (d > c) ? 1 : (d == c) ? 0 : -1;
return (a > b) ? 1 : -1;
}
static int
verify_sgi(int verbose)
{
int Index[16]; /* list of valid partitions */
int sortcount = 0; /* number of used partitions, i.e. non-zero lengths */
int entire = 0, i = 0;
unsigned int start = 0;
long long gap = 0; /* count unused blocks */
unsigned int lastblock = sgi_get_lastblock();
clearfreelist();
for (i = 0; i < 16; i++) {
if (sgi_get_num_sectors(i) != 0) {
Index[sortcount++] = i;
if (sgi_get_sysid(i) == SGI_ENTIRE_DISK) {
if (entire++ == 1) {
if (verbose)
printf("More than one entire disk entry present\n");
}
}
}
}
if (sortcount == 0) {
if (verbose)
printf("No partitions defined\n");
return (lastblock > 0) ? 1 : (lastblock == 0) ? 0 : -1;
}
qsort(Index, sortcount, sizeof(Index[0]), (void*)compare_start);
if (sgi_get_sysid(Index[0]) == SGI_ENTIRE_DISK) {
if ((Index[0] != 10) && verbose)
printf("IRIX likes when Partition 11 covers the entire disk\n");
if ((sgi_get_start_sector(Index[0]) != 0) && verbose)
printf("The entire disk partition should start "
"at block 0,\n"
"not at diskblock %d\n",
sgi_get_start_sector(Index[0]));
if (debug) /* I do not understand how some disks fulfil it */
if ((sgi_get_num_sectors(Index[0]) != lastblock) && verbose)
printf("The entire disk partition is only %d diskblock large,\n"
"but the disk is %d diskblocks long\n",
sgi_get_num_sectors(Index[0]), lastblock);
lastblock = sgi_get_num_sectors(Index[0]);
} else {
if (verbose)
printf("One Partition (#11) should cover the entire disk\n");
if (debug > 2)
printf("sysid=%d\tpartition=%d\n",
sgi_get_sysid(Index[0]), Index[0]+1);
}
for (i = 1, start = 0; i < sortcount; i++) {
int cylsize = sgi_get_nsect() * sgi_get_ntrks();
if ((sgi_get_start_sector(Index[i]) % cylsize) != 0) {
if (debug) /* I do not understand how some disks fulfil it */
if (verbose)
printf("Partition %d does not start on cylinder boundary\n",
Index[i]+1);
}
if (sgi_get_num_sectors(Index[i]) % cylsize != 0) {
if (debug) /* I do not understand how some disks fulfil it */
if (verbose)
printf("Partition %d does not end on cylinder boundary\n",
Index[i]+1);
}
/* We cannot handle several "entire disk" entries. */
if (sgi_get_sysid(Index[i]) == SGI_ENTIRE_DISK) continue;
if (start > sgi_get_start_sector(Index[i])) {
if (verbose)
printf("Partitions %d and %d overlap by %d sectors\n",
Index[i-1]+1, Index[i]+1,
start - sgi_get_start_sector(Index[i]));
if (gap > 0) gap = -gap;
if (gap == 0) gap = -1;
}
if (start < sgi_get_start_sector(Index[i])) {
if (verbose)
printf("Unused gap of %8u sectors - sectors %8u-%8u\n",
sgi_get_start_sector(Index[i]) - start,
start, sgi_get_start_sector(Index[i])-1);
gap += sgi_get_start_sector(Index[i]) - start;
add2freelist(start, sgi_get_start_sector(Index[i]));
}
start = sgi_get_start_sector(Index[i])
+ sgi_get_num_sectors(Index[i]);
if (debug > 1) {
if (verbose)
printf("%2d:%12d\t%12d\t%12d\n", Index[i],
sgi_get_start_sector(Index[i]),
sgi_get_num_sectors(Index[i]),
sgi_get_sysid(Index[i]));
}
}
if (start < lastblock) {
if (verbose)
printf("Unused gap of %8u sectors - sectors %8u-%8u\n",
lastblock - start, start, lastblock-1);
gap += lastblock - start;
add2freelist(start, lastblock);
}
/*
* Done with arithmetics
* Go for details now
*/
if (verbose) {
if (!sgi_get_num_sectors(sgi_get_bootpartition())) {
printf("\nThe boot partition does not exist\n");
}
if (!sgi_get_num_sectors(sgi_get_swappartition())) {
printf("\nThe swap partition does not exist\n");
} else {
if ((sgi_get_sysid(sgi_get_swappartition()) != SGI_SWAP)
&& (sgi_get_sysid(sgi_get_swappartition()) != LINUX_SWAP))
printf("\nThe swap partition has no swap type\n");
}
if (sgi_check_bootfile("/unix"))
printf("\tYou have chosen an unusual boot file name\n");
}
return (gap > 0) ? 1 : (gap == 0) ? 0 : -1;
}
static int
sgi_gaps(void)
{
/*
* returned value is:
* = 0 : disk is properly filled to the rim
* < 0 : there is an overlap
* > 0 : there is still some vacant space
*/
return verify_sgi(0);
}
static void
sgi_change_sysid(int i, int sys)
{
if (sgi_get_num_sectors(i) == 0) { /* caught already before, ... */
printf("Sorry you may change the Tag of non-empty partitions\n");
return;
}
if ((sys != SGI_ENTIRE_DISK) && (sys != SGI_VOLHDR)
&& (sgi_get_start_sector(i) < 1)
) {
read_maybe_empty(
"It is highly recommended that the partition at offset 0\n"
"is of type \"SGI volhdr\", the IRIX system will rely on it to\n"
"retrieve from its directory standalone tools like sash and fx.\n"
"Only the \"SGI volume\" entire disk section may violate this.\n"
"Type YES if you are sure about tagging this partition differently.\n");
if (strcmp(line_ptr, "YES\n") != 0)
return;
}
sgilabel->partitions[i].id = SGI_SSWAP32(sys);
}
/* returns partition index of first entry marked as entire disk */
static int
sgi_entire(void)
{
int i;
for (i = 0; i < 16; i++)
if (sgi_get_sysid(i) == SGI_VOLUME)
return i;
return -1;
}
static void
sgi_set_partition(int i, unsigned int start, unsigned int length, int sys)
{
sgilabel->partitions[i].id = SGI_SSWAP32(sys);
sgilabel->partitions[i].num_sectors = SGI_SSWAP32(length);
sgilabel->partitions[i].start_sector = SGI_SSWAP32(start);
set_changed(i);
if (sgi_gaps() < 0) /* rebuild freelist */
printf("Partition overlap detected\n");
}
static void
sgi_set_entire(void)
{
int n;
for (n = 10; n < partitions; n++) {
if (!sgi_get_num_sectors(n) ) {
sgi_set_partition(n, 0, sgi_get_lastblock(), SGI_VOLUME);
break;
}
}
}
static void
sgi_set_volhdr(void)
{
int n;
for (n = 8; n < partitions; n++) {
if (!sgi_get_num_sectors(n)) {
/*
* 5 cylinders is an arbitrary value I like
* IRIX 5.3 stored files in the volume header
* (like sash, symmon, fx, ide) with ca. 3200
* sectors.
*/
if (heads * sectors * 5 < sgi_get_lastblock())
sgi_set_partition(n, 0, heads * sectors * 5, SGI_VOLHDR);
break;
}
}
}
static void
sgi_delete_partition(int i)
{
sgi_set_partition(i, 0, 0, 0);
}
static void
sgi_add_partition(int n, int sys)
{
char mesg[256];
unsigned int first = 0, last = 0;
if (n == 10) {
sys = SGI_VOLUME;
} else if (n == 8) {
sys = 0;
}
if (sgi_get_num_sectors(n)) {
printf(msg_part_already_defined, n + 1);
return;
}
if ((sgi_entire() == -1) && (sys != SGI_VOLUME)) {
printf("Attempting to generate entire disk entry automatically\n");
sgi_set_entire();
sgi_set_volhdr();
}
if ((sgi_gaps() == 0) && (sys != SGI_VOLUME)) {
printf("The entire disk is already covered with partitions\n");
return;
}
if (sgi_gaps() < 0) {
printf("You got a partition overlap on the disk. Fix it first!\n");
return;
}
snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
while (1) {
if (sys == SGI_VOLUME) {
last = sgi_get_lastblock();
first = read_int(0, 0, last-1, 0, mesg);
if (first != 0) {
printf("It is highly recommended that eleventh partition\n"
"covers the entire disk and is of type 'SGI volume'\n");
}
} else {
first = freelist[0].first;
last = freelist[0].last;
first = read_int(scround(first), scround(first), scround(last)-1,
0, mesg);
}
if (display_in_cyl_units)
first *= units_per_sector;
else
first = first; /* align to cylinder if you know how ... */
if (!last )
last = isinfreelist(first);
if (last != 0)
break;
printf("You will get a partition overlap on the disk. "
"Fix it first!\n");
}
snprintf(mesg, sizeof(mesg), " Last %s", str_units(SINGULAR));
last = read_int(scround(first), scround(last)-1, scround(last)-1,
scround(first), mesg)+1;
if (display_in_cyl_units)
last *= units_per_sector;
else
last = last; /* align to cylinder if You know how ... */
if ( (sys == SGI_VOLUME) && (first != 0 || last != sgi_get_lastblock() ) )
printf("It is highly recommended that eleventh partition\n"
"covers the entire disk and is of type 'SGI volume'\n");
sgi_set_partition(n, first, last-first, sys);
}
#if ENABLE_FEATURE_FDISK_ADVANCED
static void
create_sgilabel(void)
{
struct hd_geometry geometry;
struct {
unsigned int start;
unsigned int nsect;
int sysid;
} old[4];
int i = 0;
long longsectors; /* the number of sectors on the device */
int res; /* the result from the ioctl */
int sec_fac; /* the sector factor */
sec_fac = sector_size / 512; /* determine the sector factor */
printf(msg_building_new_label, "SGI disklabel");
sgi_other_endian = (BYTE_ORDER == LITTLE_ENDIAN);
res = ioctl(fd, BLKGETSIZE, &longsectors);
if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
heads = geometry.heads;
sectors = geometry.sectors;
if (res == 0) {
/* the get device size ioctl was successful */
cylinders = longsectors / (heads * sectors);
cylinders /= sec_fac;
} else {
/* otherwise print error and use truncated version */
cylinders = geometry.cylinders;
printf(
"Warning: BLKGETSIZE ioctl failed on %s. Using geometry cylinder value of %d.\n"
"This value may be truncated for devices > 33.8 GB.\n", disk_device, cylinders);
}
}
for (i = 0; i < 4; i++) {
old[i].sysid = 0;
if (valid_part_table_flag(MBRbuffer)) {
if (get_part_table(i)->sys_ind) {
old[i].sysid = get_part_table(i)->sys_ind;
old[i].start = get_start_sect(get_part_table(i));
old[i].nsect = get_nr_sects(get_part_table(i));
printf("Trying to keep parameters of partition %d\n", i);
if (debug)
printf("ID=%02x\tSTART=%d\tLENGTH=%d\n",
old[i].sysid, old[i].start, old[i].nsect);
}
}
}
memset(MBRbuffer, 0, sizeof(MBRbuffer));
/* fields with '//' are already zeroed out by memset above */
sgilabel->magic = SGI_SSWAP32(SGI_LABEL_MAGIC);
//sgilabel->boot_part = SGI_SSWAP16(0);
sgilabel->swap_part = SGI_SSWAP16(1);
//memset(sgilabel->boot_file, 0, 16);
strcpy((char*)sgilabel->boot_file, "/unix"); /* sizeof(sgilabel->boot_file) == 16 > 6 */
//sgilabel->devparam.skew = (0);
//sgilabel->devparam.gap1 = (0);
//sgilabel->devparam.gap2 = (0);
//sgilabel->devparam.sparecyl = (0);
sgilabel->devparam.pcylcount = SGI_SSWAP16(geometry.cylinders);
//sgilabel->devparam.head_vol0 = SGI_SSWAP16(0);
/* tracks/cylinder (heads) */
sgilabel->devparam.ntrks = SGI_SSWAP16(geometry.heads);
//sgilabel->devparam.cmd_tag_queue_depth = (0);
//sgilabel->devparam.unused0 = (0);
//sgilabel->devparam.unused1 = SGI_SSWAP16(0);
/* sectors/track */
sgilabel->devparam.nsect = SGI_SSWAP16(geometry.sectors);
sgilabel->devparam.bytes = SGI_SSWAP16(512);
sgilabel->devparam.ilfact = SGI_SSWAP16(1);
sgilabel->devparam.flags = SGI_SSWAP32(TRACK_FWD|
IGNORE_ERRORS|RESEEK);
//sgilabel->devparam.datarate = SGI_SSWAP32(0);
sgilabel->devparam.retries_on_error = SGI_SSWAP32(1);
//sgilabel->devparam.ms_per_word = SGI_SSWAP32(0);
//sgilabel->devparam.xylogics_gap1 = SGI_SSWAP16(0);
//sgilabel->devparam.xylogics_syncdelay = SGI_SSWAP16(0);
//sgilabel->devparam.xylogics_readdelay = SGI_SSWAP16(0);
//sgilabel->devparam.xylogics_gap2 = SGI_SSWAP16(0);
//sgilabel->devparam.xylogics_readgate = SGI_SSWAP16(0);
//sgilabel->devparam.xylogics_writecont = SGI_SSWAP16(0);
//memset( &(sgilabel->directory), 0, sizeof(struct volume_directory)*15 );
//memset( &(sgilabel->partitions), 0, sizeof(struct sgi_partinfo)*16 );
current_label_type = label_sgi;
partitions = 16;
sgi_volumes = 15;
sgi_set_entire();
sgi_set_volhdr();
for (i = 0; i < 4; i++) {
if (old[i].sysid) {
sgi_set_partition(i, old[i].start, old[i].nsect, old[i].sysid);
}
}
}
static void
sgi_set_xcyl(void)
{
/* do nothing in the beginning */
}
#endif /* FEATURE_FDISK_ADVANCED */
/* _____________________________________________________________
*/
static sgiinfo *
fill_sgiinfo(void)
{
sgiinfo *info = xzalloc(sizeof(sgiinfo));
info->magic = SGI_SSWAP32(SGI_INFO_MAGIC);
info->b1 = SGI_SSWAP32(-1);
info->b2 = SGI_SSWAP16(-1);
info->b3 = SGI_SSWAP16(1);
/* You may want to replace this string !!!!!!! */
strcpy( (char*)info->scsi_string, "IBM OEM 0662S12 3 30" );
strcpy( (char*)info->serial, "0000" );
info->check1816 = SGI_SSWAP16(18*256 +16 );
strcpy( (char*)info->installer, "Sfx version 5.3, Oct 18, 1994" );
return info;
}
#endif /* SGI_LABEL */
|