1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <errno.h> 31 #include <strings.h> 32 #include <unistd.h> 33 #include <uuid/uuid.h> 34 #include <libintl.h> 35 #include <sys/types.h> 36 #include <sys/dkio.h> 37 #include <sys/vtoc.h> 38 #include <sys/mhd.h> 39 #include <sys/param.h> 40 #include <sys/dktp/fdisk.h> 41 #include <sys/efi_partition.h> 42 #include <sys/byteorder.h> 43 #include <sys/ddi.h> 44 45 static struct uuid_to_ptag { 46 struct uuid uuid; 47 } conversion_array[] = { 48 { EFI_UNUSED }, 49 { EFI_BOOT }, 50 { EFI_ROOT }, 51 { EFI_SWAP }, 52 { EFI_USR }, 53 { EFI_BACKUP }, 54 { 0 }, /* STAND is never used */ 55 { EFI_VAR }, 56 { EFI_HOME }, 57 { EFI_ALTSCTR }, 58 { 0 }, /* CACHE (cachefs) is never used */ 59 { EFI_RESERVED }, 60 { EFI_SYSTEM }, 61 { EFI_LEGACY_MBR }, 62 { EFI_RESV3 }, 63 { EFI_RESV4 }, 64 { EFI_MSFT_RESV }, 65 { EFI_DELL_BASIC }, 66 { EFI_DELL_RAID }, 67 { EFI_DELL_SWAP }, 68 { EFI_DELL_LVM }, 69 { EFI_DELL_RESV }, 70 { EFI_AAPL_HFS }, 71 { EFI_AAPL_UFS } 72 }; 73 74 /* 75 * Default vtoc information for non-SVr4 partitions 76 */ 77 struct dk_map2 default_vtoc_map[NDKMAP] = { 78 { V_ROOT, 0 }, /* a - 0 */ 79 { V_SWAP, V_UNMNT }, /* b - 1 */ 80 { V_BACKUP, V_UNMNT }, /* c - 2 */ 81 { V_UNASSIGNED, 0 }, /* d - 3 */ 82 { V_UNASSIGNED, 0 }, /* e - 4 */ 83 { V_UNASSIGNED, 0 }, /* f - 5 */ 84 { V_USR, 0 }, /* g - 6 */ 85 { V_UNASSIGNED, 0 }, /* h - 7 */ 86 87 #if defined(_SUNOS_VTOC_16) 88 89 #if defined(i386) || defined(__amd64) 90 { V_BOOT, V_UNMNT }, /* i - 8 */ 91 { V_ALTSCTR, 0 }, /* j - 9 */ 92 93 #else 94 #error No VTOC format defined. 95 #endif /* defined(i386) */ 96 97 { V_UNASSIGNED, 0 }, /* k - 10 */ 98 { V_UNASSIGNED, 0 }, /* l - 11 */ 99 { V_UNASSIGNED, 0 }, /* m - 12 */ 100 { V_UNASSIGNED, 0 }, /* n - 13 */ 101 { V_UNASSIGNED, 0 }, /* o - 14 */ 102 { V_UNASSIGNED, 0 }, /* p - 15 */ 103 #endif /* defined(_SUNOS_VTOC_16) */ 104 }; 105 106 /* 107 * This is the size of the reserved partition. 108 * Valid in case of EFI labels. 109 */ 110 #define EFI_MIN_RESV_SIZE (16 * 1024) 111 112 #ifdef DEBUG 113 int efi_debug = 1; 114 #else 115 int efi_debug = 0; 116 #endif 117 118 extern unsigned int efi_crc32(const unsigned char *, unsigned int); 119 static int efi_read(int, struct dk_gpt *); 120 121 static int 122 read_disk_info(int fd, diskaddr_t *capacity, uint_t *lbsize) 123 { 124 struct dk_minfo disk_info; 125 126 if ((ioctl(fd, DKIOCGMEDIAINFO, (caddr_t)&disk_info)) == -1) 127 return (errno); 128 *capacity = disk_info.dki_capacity; 129 *lbsize = disk_info.dki_lbsize; 130 return (0); 131 } 132 133 /* 134 * the number of blocks the EFI label takes up (round up to nearest 135 * block) 136 */ 137 #define NBLOCKS(p, l) (1 + ((((p) * (int)sizeof (efi_gpe_t)) + \ 138 ((l) - 1)) / (l))) 139 /* number of partitions -- limited by what we can malloc */ 140 #define MAX_PARTS ((4294967295UL - sizeof (struct dk_gpt)) / \ 141 sizeof (struct dk_part)) 142 143 int 144 efi_alloc_and_init(int fd, uint32_t nparts, struct dk_gpt **vtoc) 145 { 146 diskaddr_t capacity; 147 uint_t lbsize; 148 uint_t nblocks; 149 size_t length; 150 struct dk_gpt *vptr; 151 struct uuid uuid; 152 153 if (read_disk_info(fd, &capacity, &lbsize) != 0) { 154 if (efi_debug) 155 (void) fprintf(stderr, 156 "couldn't read disk information\n"); 157 return (-1); 158 } 159 160 nblocks = NBLOCKS(nparts, lbsize); 161 if ((nblocks * lbsize) < EFI_MIN_ARRAY_SIZE + lbsize) { 162 /* 16K plus one block for the GPT */ 163 nblocks = EFI_MIN_ARRAY_SIZE / lbsize + 1; 164 } 165 166 if (nparts > MAX_PARTS) { 167 if (efi_debug) { 168 (void) fprintf(stderr, 169 "the maximum number of partitions supported is %lu\n", 170 MAX_PARTS); 171 } 172 return (-1); 173 } 174 175 length = sizeof (struct dk_gpt) + 176 sizeof (struct dk_part) * (nparts - 1); 177 178 if ((*vtoc = calloc(length, 1)) == NULL) 179 return (-1); 180 181 vptr = *vtoc; 182 183 vptr->efi_version = EFI_VERSION_CURRENT; 184 vptr->efi_lbasize = lbsize; 185 vptr->efi_nparts = nparts; 186 /* 187 * add one block here for the PMBR; on disks with a 512 byte 188 * block size and 128 or fewer partitions, efi_first_u_lba 189 * should work out to "34" 190 */ 191 vptr->efi_first_u_lba = nblocks + 1; 192 vptr->efi_last_lba = capacity - 1; 193 vptr->efi_last_u_lba = vptr->efi_last_lba - nblocks; 194 (void) uuid_generate((uchar_t *)&uuid); 195 UUID_LE_CONVERT(vptr->efi_disk_uguid, uuid); 196 return (0); 197 } 198 199 /* 200 * Read EFI - return partition number upon success. 201 */ 202 int 203 efi_alloc_and_read(int fd, struct dk_gpt **vtoc) 204 { 205 int rval; 206 uint32_t nparts; 207 int length; 208 209 /* figure out the number of entries that would fit into 16K */ 210 nparts = EFI_MIN_ARRAY_SIZE / sizeof (efi_gpe_t); 211 length = (int) sizeof (struct dk_gpt) + 212 (int) sizeof (struct dk_part) * (nparts - 1); 213 if ((*vtoc = calloc(length, 1)) == NULL) 214 return (VT_ERROR); 215 216 (*vtoc)->efi_nparts = nparts; 217 rval = efi_read(fd, *vtoc); 218 219 if ((rval == VT_EINVAL) && (*vtoc)->efi_nparts > nparts) { 220 void *tmp; 221 length = (int) sizeof (struct dk_gpt) + 222 (int) sizeof (struct dk_part) * 223 ((*vtoc)->efi_nparts - 1); 224 nparts = (*vtoc)->efi_nparts; 225 if ((tmp = realloc(*vtoc, length)) == NULL) { 226 free (*vtoc); 227 *vtoc = NULL; 228 return (VT_ERROR); 229 } else { 230 *vtoc = tmp; 231 rval = efi_read(fd, *vtoc); 232 } 233 } 234 235 if (rval < 0) { 236 if (efi_debug) { 237 (void) fprintf(stderr, 238 "read of EFI table failed, rval=%d\n", rval); 239 } 240 free (*vtoc); 241 *vtoc = NULL; 242 } 243 244 return (rval); 245 } 246 247 static int 248 efi_ioctl(int fd, int cmd, dk_efi_t *dk_ioc) 249 { 250 void *data = dk_ioc->dki_data; 251 int error; 252 253 dk_ioc->dki_data_64 = (uint64_t)(uintptr_t)data; 254 error = ioctl(fd, cmd, (void *)dk_ioc); 255 dk_ioc->dki_data = data; 256 257 return (error); 258 } 259 260 static int 261 check_label(int fd, dk_efi_t *dk_ioc) 262 { 263 efi_gpt_t *efi; 264 uint_t crc; 265 266 if (efi_ioctl(fd, DKIOCGETEFI, dk_ioc) == -1) { 267 switch (errno) { 268 case EIO: 269 return (VT_EIO); 270 default: 271 return (VT_ERROR); 272 } 273 } 274 efi = dk_ioc->dki_data; 275 if (efi->efi_gpt_Signature != LE_64(EFI_SIGNATURE)) { 276 if (efi_debug) 277 (void) fprintf(stderr, 278 "Bad EFI signature: 0x%llx != 0x%llx\n", 279 (long long)efi->efi_gpt_Signature, 280 (long long)LE_64(EFI_SIGNATURE)); 281 return (VT_EINVAL); 282 } 283 284 /* 285 * check CRC of the header; the size of the header should 286 * never be larger than one block 287 */ 288 crc = efi->efi_gpt_HeaderCRC32; 289 efi->efi_gpt_HeaderCRC32 = 0; 290 291 if (((len_t)LE_32(efi->efi_gpt_HeaderSize) > dk_ioc->dki_length) || 292 crc != LE_32(efi_crc32((unsigned char *)efi, 293 LE_32(efi->efi_gpt_HeaderSize)))) { 294 if (efi_debug) 295 (void) fprintf(stderr, 296 "Bad EFI CRC: 0x%x != 0x%x\n", 297 crc, 298 LE_32(efi_crc32((unsigned char *)efi, 299 sizeof (struct efi_gpt)))); 300 return (VT_EINVAL); 301 } 302 303 return (0); 304 } 305 306 static int 307 efi_read(int fd, struct dk_gpt *vtoc) 308 { 309 int i, j; 310 int label_len; 311 int rval = 0; 312 int md_flag = 0; 313 struct dk_minfo disk_info; 314 dk_efi_t dk_ioc; 315 efi_gpt_t *efi; 316 efi_gpe_t *efi_parts; 317 struct dk_cinfo dki_info; 318 uint32_t user_length; 319 320 /* 321 * get the partition number for this file descriptor. 322 */ 323 if (ioctl(fd, DKIOCINFO, (caddr_t)&dki_info) == -1) { 324 if (efi_debug) 325 (void) fprintf(stderr, "DKIOCINFO errno 0x%x\n", errno); 326 switch (errno) { 327 case EIO: 328 return (VT_EIO); 329 case EINVAL: 330 return (VT_EINVAL); 331 default: 332 return (VT_ERROR); 333 } 334 } 335 if ((strncmp(dki_info.dki_cname, "pseudo", 7) == 0) && 336 (strncmp(dki_info.dki_dname, "md", 3) == 0)) { 337 md_flag++; 338 } 339 /* get the LBA size */ 340 if (ioctl(fd, DKIOCGMEDIAINFO, (caddr_t)&disk_info) == -1) { 341 if (efi_debug) { 342 (void) fprintf(stderr, 343 "assuming LBA 512 bytes %d\n", 344 errno); 345 } 346 disk_info.dki_lbsize = DEV_BSIZE; 347 } 348 if (disk_info.dki_lbsize == 0) { 349 if (efi_debug) { 350 (void) fprintf(stderr, 351 "efi_read: assuming LBA 512 bytes\n"); 352 } 353 disk_info.dki_lbsize = DEV_BSIZE; 354 } 355 /* 356 * Read the EFI GPT to figure out how many partitions we need 357 * to deal with. 358 */ 359 dk_ioc.dki_lba = 1; 360 if (NBLOCKS(vtoc->efi_nparts, disk_info.dki_lbsize) < 34) { 361 label_len = EFI_MIN_ARRAY_SIZE + disk_info.dki_lbsize; 362 } else { 363 label_len = vtoc->efi_nparts * (int) sizeof (efi_gpe_t) + 364 disk_info.dki_lbsize; 365 if (label_len % disk_info.dki_lbsize) { 366 /* pad to physical sector size */ 367 label_len += disk_info.dki_lbsize; 368 label_len &= ~(disk_info.dki_lbsize - 1); 369 } 370 } 371 372 if ((dk_ioc.dki_data = calloc(label_len, 1)) == NULL) 373 return (VT_ERROR); 374 375 dk_ioc.dki_length = label_len; 376 user_length = vtoc->efi_nparts; 377 efi = dk_ioc.dki_data; 378 if (md_flag) { 379 if (efi_ioctl(fd, DKIOCGETEFI, &dk_ioc) == -1) { 380 switch (errno) { 381 case EIO: 382 return (VT_EIO); 383 default: 384 return (VT_ERROR); 385 } 386 } 387 } else if ((rval = check_label(fd, &dk_ioc)) == VT_EINVAL) { 388 /* no valid label here; try the alternate */ 389 dk_ioc.dki_lba = disk_info.dki_capacity - 1; 390 dk_ioc.dki_length = disk_info.dki_lbsize; 391 rval = check_label(fd, &dk_ioc); 392 if (rval != 0) { 393 /* 394 * This is a workaround for legacy systems. 395 * 396 * In the past, the last sector of SCSI disk was 397 * invisible on x86 platform. At that time, backup 398 * label was saved on the next to the last sector. 399 * It is possible for users to move a disk from 400 * previous solaris system to present system. 401 */ 402 dk_ioc.dki_lba = disk_info.dki_capacity - 2; 403 dk_ioc.dki_length = disk_info.dki_lbsize; 404 rval = check_label(fd, &dk_ioc); 405 if (efi_debug && (rval == 0)) { 406 (void) fprintf(stderr, 407 "efi_read: primary label corrupt; " 408 "using legacy EFI backup label\n"); 409 } 410 } 411 412 if (rval == 0) { 413 if (efi_debug) { 414 (void) fprintf(stderr, 415 "efi_read: primary label corrupt; " 416 "using backup\n"); 417 } 418 dk_ioc.dki_lba = LE_64(efi->efi_gpt_PartitionEntryLBA); 419 vtoc->efi_flags |= EFI_GPT_PRIMARY_CORRUPT; 420 vtoc->efi_nparts = 421 LE_32(efi->efi_gpt_NumberOfPartitionEntries); 422 /* 423 * partitions are between last usable LBA and 424 * backup partition header 425 */ 426 dk_ioc.dki_data++; 427 dk_ioc.dki_length = disk_info.dki_capacity - 428 dk_ioc.dki_lba - 1; 429 dk_ioc.dki_length *= disk_info.dki_lbsize; 430 if (dk_ioc.dki_length > (len_t)label_len) { 431 rval = VT_EINVAL; 432 } else { 433 rval = efi_ioctl(fd, DKIOCGETEFI, &dk_ioc); 434 } 435 } 436 } 437 if (rval < 0) { 438 free(efi); 439 return (rval); 440 } 441 442 /* LINTED -- always longlong aligned */ 443 efi_parts = (efi_gpe_t *)(((char *)efi) + 444 LE_64(efi->efi_gpt_PartitionEntryLBA) * disk_info.dki_lbsize); 445 446 /* 447 * Assemble this into a "dk_gpt" struct for easier 448 * digestibility by applications. 449 */ 450 vtoc->efi_version = LE_32(efi->efi_gpt_Revision); 451 vtoc->efi_nparts = LE_32(efi->efi_gpt_NumberOfPartitionEntries); 452 vtoc->efi_part_size = LE_32(efi->efi_gpt_SizeOfPartitionEntry); 453 vtoc->efi_lbasize = disk_info.dki_lbsize; 454 vtoc->efi_last_lba = disk_info.dki_capacity - 1; 455 vtoc->efi_first_u_lba = LE_64(efi->efi_gpt_FirstUsableLBA); 456 vtoc->efi_last_u_lba = LE_64(efi->efi_gpt_LastUsableLBA); 457 UUID_LE_CONVERT(vtoc->efi_disk_uguid, efi->efi_gpt_DiskGUID); 458 459 /* 460 * If the array the user passed in is too small, set the length 461 * to what it needs to be and return 462 */ 463 if (user_length < vtoc->efi_nparts) { 464 return (VT_EINVAL); 465 } 466 467 for (i = 0; i < vtoc->efi_nparts; i++) { 468 469 UUID_LE_CONVERT(vtoc->efi_parts[i].p_guid, 470 efi_parts[i].efi_gpe_PartitionTypeGUID); 471 472 for (j = 0; 473 j < sizeof (conversion_array) / sizeof (struct uuid_to_ptag); 474 j++) { 475 476 if (bcmp(&vtoc->efi_parts[i].p_guid, 477 &conversion_array[j].uuid, 478 sizeof (struct uuid)) == 0) { 479 vtoc->efi_parts[i].p_tag = j; 480 break; 481 } 482 } 483 if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) 484 continue; 485 vtoc->efi_parts[i].p_flag = 486 LE_16(efi_parts[i].efi_gpe_Attributes.PartitionAttrs); 487 vtoc->efi_parts[i].p_start = 488 LE_64(efi_parts[i].efi_gpe_StartingLBA); 489 vtoc->efi_parts[i].p_size = 490 LE_64(efi_parts[i].efi_gpe_EndingLBA) - 491 vtoc->efi_parts[i].p_start + 1; 492 for (j = 0; j < EFI_PART_NAME_LEN; j++) { 493 vtoc->efi_parts[i].p_name[j] = 494 (uchar_t)LE_16(efi_parts[i].efi_gpe_PartitionName[j]); 495 } 496 497 UUID_LE_CONVERT(vtoc->efi_parts[i].p_uguid, 498 efi_parts[i].efi_gpe_UniquePartitionGUID); 499 } 500 free(efi); 501 502 return (dki_info.dki_partition); 503 } 504 505 /* writes a "protective" MBR */ 506 static int 507 write_pmbr(int fd, struct dk_gpt *vtoc) 508 { 509 dk_efi_t dk_ioc; 510 struct mboot mb; 511 uchar_t *cp; 512 diskaddr_t size_in_lba; 513 514 mb.signature = LE_16(MBB_MAGIC); 515 bzero(&mb.parts, sizeof (mb.parts)); 516 cp = (uchar_t *)&mb.parts[0]; 517 /* bootable or not */ 518 *cp++ = 0; 519 /* beginning CHS; 0xffffff if not representable */ 520 *cp++ = 0xff; 521 *cp++ = 0xff; 522 *cp++ = 0xff; 523 /* OS type */ 524 *cp++ = EFI_PMBR; 525 /* ending CHS; 0xffffff if not representable */ 526 *cp++ = 0xff; 527 *cp++ = 0xff; 528 *cp++ = 0xff; 529 /* starting LBA: 1 (little endian format) by EFI definition */ 530 *cp++ = 0x01; 531 *cp++ = 0x00; 532 *cp++ = 0x00; 533 *cp++ = 0x00; 534 /* ending LBA: last block on the disk (little endian format) */ 535 size_in_lba = vtoc->efi_last_lba; 536 if (size_in_lba < 0xffffffff) { 537 *cp++ = (size_in_lba & 0x000000ff); 538 *cp++ = (size_in_lba & 0x0000ff00) >> 8; 539 *cp++ = (size_in_lba & 0x00ff0000) >> 16; 540 *cp++ = (size_in_lba & 0xff000000) >> 24; 541 } else { 542 *cp++ = 0xff; 543 *cp++ = 0xff; 544 *cp++ = 0xff; 545 *cp++ = 0xff; 546 } 547 /* LINTED -- always longlong aligned */ 548 dk_ioc.dki_data = (efi_gpt_t *)&mb; 549 dk_ioc.dki_lba = 0; 550 dk_ioc.dki_length = sizeof (mb); 551 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 552 switch (errno) { 553 case EIO: 554 return (VT_EIO); 555 case EINVAL: 556 return (VT_EINVAL); 557 default: 558 return (VT_ERROR); 559 } 560 } 561 return (0); 562 } 563 564 /* make sure the user specified something reasonable */ 565 static int 566 check_input(struct dk_gpt *vtoc) 567 { 568 int resv_part = -1; 569 int i, j; 570 diskaddr_t istart, jstart, isize, jsize, endsect; 571 572 /* 573 * Sanity-check the input (make sure no partitions overlap) 574 */ 575 for (i = 0; i < vtoc->efi_nparts; i++) { 576 /* It can't be unassigned and have an actual size */ 577 if ((vtoc->efi_parts[i].p_tag == V_UNASSIGNED) && 578 (vtoc->efi_parts[i].p_size != 0)) { 579 if (efi_debug) { 580 (void) fprintf(stderr, 581 "partition %d is \"unassigned\" but has a size of %llu", 582 i, 583 vtoc->efi_parts[i].p_size); 584 } 585 return (VT_EINVAL); 586 } 587 if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) { 588 if (uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_guid)) 589 continue; 590 /* we have encountered an unknown uuid */ 591 vtoc->efi_parts[i].p_tag = 0xff; 592 } 593 if (vtoc->efi_parts[i].p_tag == V_RESERVED) { 594 if (resv_part != -1) { 595 if (efi_debug) { 596 (void) fprintf(stderr, 597 "found duplicate reserved partition at %d\n", 598 i); 599 } 600 return (VT_EINVAL); 601 } 602 resv_part = i; 603 } 604 if ((vtoc->efi_parts[i].p_start < vtoc->efi_first_u_lba) || 605 (vtoc->efi_parts[i].p_start > vtoc->efi_last_u_lba)) { 606 if (efi_debug) { 607 (void) fprintf(stderr, 608 "Partition %d starts at %llu. ", 609 i, 610 vtoc->efi_parts[i].p_start); 611 (void) fprintf(stderr, 612 "It must be between %llu and %llu.\n", 613 vtoc->efi_first_u_lba, 614 vtoc->efi_last_u_lba); 615 } 616 return (VT_EINVAL); 617 } 618 if ((vtoc->efi_parts[i].p_start + 619 vtoc->efi_parts[i].p_size < 620 vtoc->efi_first_u_lba) || 621 (vtoc->efi_parts[i].p_start + 622 vtoc->efi_parts[i].p_size > 623 vtoc->efi_last_u_lba + 1)) { 624 if (efi_debug) { 625 (void) fprintf(stderr, 626 "Partition %d ends at %llu. ", 627 i, 628 vtoc->efi_parts[i].p_start + 629 vtoc->efi_parts[i].p_size); 630 (void) fprintf(stderr, 631 "It must be between %llu and %llu.\n", 632 vtoc->efi_first_u_lba, 633 vtoc->efi_last_u_lba); 634 } 635 return (VT_EINVAL); 636 } 637 638 for (j = 0; j < vtoc->efi_nparts; j++) { 639 isize = vtoc->efi_parts[i].p_size; 640 jsize = vtoc->efi_parts[j].p_size; 641 istart = vtoc->efi_parts[i].p_start; 642 jstart = vtoc->efi_parts[j].p_start; 643 if ((i != j) && (isize != 0) && (jsize != 0)) { 644 endsect = jstart + jsize -1; 645 if ((jstart <= istart) && 646 (istart <= endsect)) { 647 if (efi_debug) { 648 (void) fprintf(stderr, 649 "Partition %d overlaps partition %d.", 650 i, j); 651 } 652 return (VT_EINVAL); 653 } 654 } 655 } 656 } 657 /* just a warning for now */ 658 if ((resv_part == -1) && efi_debug) { 659 (void) fprintf(stderr, 660 "no reserved partition found\n"); 661 } 662 return (0); 663 } 664 665 /* 666 * write EFI label and backup label 667 */ 668 int 669 efi_write(int fd, struct dk_gpt *vtoc) 670 { 671 dk_efi_t dk_ioc; 672 efi_gpt_t *efi; 673 efi_gpe_t *efi_parts; 674 int i, j; 675 struct dk_cinfo dki_info; 676 int md_flag = 0; 677 678 if (ioctl(fd, DKIOCINFO, (caddr_t)&dki_info) == -1) { 679 if (efi_debug) 680 (void) fprintf(stderr, "DKIOCINFO errno 0x%x\n", errno); 681 switch (errno) { 682 case EIO: 683 return (VT_EIO); 684 case EINVAL: 685 return (VT_EINVAL); 686 default: 687 return (VT_ERROR); 688 } 689 } 690 691 /* check if we are dealing wih a metadevice */ 692 if ((strncmp(dki_info.dki_cname, "pseudo", 7) == 0) && 693 (strncmp(dki_info.dki_dname, "md", 3) == 0)) { 694 md_flag = 1; 695 } 696 697 if (check_input(vtoc)) { 698 /* 699 * not valid; if it's a metadevice just pass it down 700 * because SVM will do its own checking 701 */ 702 if (md_flag == 0) { 703 return (VT_EINVAL); 704 } 705 } 706 707 dk_ioc.dki_lba = 1; 708 if (NBLOCKS(vtoc->efi_nparts, vtoc->efi_lbasize) < 34) { 709 dk_ioc.dki_length = EFI_MIN_ARRAY_SIZE + vtoc->efi_lbasize; 710 } else { 711 dk_ioc.dki_length = NBLOCKS(vtoc->efi_nparts, 712 vtoc->efi_lbasize) * 713 vtoc->efi_lbasize; 714 } 715 716 if ((dk_ioc.dki_data = calloc(dk_ioc.dki_length, 1)) == NULL) 717 return (VT_ERROR); 718 719 efi = dk_ioc.dki_data; 720 721 /* stuff user's input into EFI struct */ 722 efi->efi_gpt_Signature = LE_64(EFI_SIGNATURE); 723 efi->efi_gpt_Revision = LE_32(vtoc->efi_version); /* 0x02000100 */ 724 efi->efi_gpt_HeaderSize = LE_32(sizeof (struct efi_gpt)); 725 efi->efi_gpt_Reserved1 = 0; 726 efi->efi_gpt_MyLBA = LE_64(1ULL); 727 efi->efi_gpt_AlternateLBA = LE_64(vtoc->efi_last_lba); 728 efi->efi_gpt_FirstUsableLBA = LE_64(vtoc->efi_first_u_lba); 729 efi->efi_gpt_LastUsableLBA = LE_64(vtoc->efi_last_u_lba); 730 efi->efi_gpt_PartitionEntryLBA = LE_64(2ULL); 731 efi->efi_gpt_NumberOfPartitionEntries = LE_32(vtoc->efi_nparts); 732 efi->efi_gpt_SizeOfPartitionEntry = LE_32(sizeof (struct efi_gpe)); 733 UUID_LE_CONVERT(efi->efi_gpt_DiskGUID, vtoc->efi_disk_uguid); 734 735 /* LINTED -- always longlong aligned */ 736 efi_parts = (efi_gpe_t *)((char *)dk_ioc.dki_data + sizeof (efi_gpt_t)); 737 738 for (i = 0; i < vtoc->efi_nparts; i++) { 739 for (j = 0; 740 j < sizeof (conversion_array) / sizeof (struct uuid_to_ptag); 741 j++) { 742 743 if (vtoc->efi_parts[i].p_tag == j) { 744 UUID_LE_CONVERT( 745 efi_parts[i].efi_gpe_PartitionTypeGUID, 746 conversion_array[j].uuid); 747 break; 748 } 749 } 750 751 if (j == sizeof (conversion_array) / sizeof (struct uuid_to_ptag)) { 752 /* 753 * If we didn't have a matching uuid match, bail here. 754 * Don't write a label with unknown uuid. 755 */ 756 if (efi_debug) 757 (void) fprintf(stderr, "Unknown uuid for p_tag %d\n", 758 vtoc->efi_parts[i].p_tag); 759 return (VT_EINVAL); 760 } 761 762 efi_parts[i].efi_gpe_StartingLBA = 763 LE_64(vtoc->efi_parts[i].p_start); 764 efi_parts[i].efi_gpe_EndingLBA = 765 LE_64(vtoc->efi_parts[i].p_start + 766 vtoc->efi_parts[i].p_size - 1); 767 efi_parts[i].efi_gpe_Attributes.PartitionAttrs = 768 LE_16(vtoc->efi_parts[i].p_flag); 769 for (j = 0; j < EFI_PART_NAME_LEN; j++) { 770 efi_parts[i].efi_gpe_PartitionName[j] = 771 LE_16((ushort_t)vtoc->efi_parts[i].p_name[j]); 772 } 773 if ((vtoc->efi_parts[i].p_tag != V_UNASSIGNED) && 774 uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_uguid)) { 775 (void) uuid_generate((uchar_t *) 776 &vtoc->efi_parts[i].p_uguid); 777 } 778 bcopy(&vtoc->efi_parts[i].p_uguid, 779 &efi_parts[i].efi_gpe_UniquePartitionGUID, 780 sizeof (uuid_t)); 781 } 782 efi->efi_gpt_PartitionEntryArrayCRC32 = 783 LE_32(efi_crc32((unsigned char *)efi_parts, 784 vtoc->efi_nparts * (int)sizeof (struct efi_gpe))); 785 efi->efi_gpt_HeaderCRC32 = 786 LE_32(efi_crc32((unsigned char *)efi, sizeof (struct efi_gpt))); 787 788 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 789 free(dk_ioc.dki_data); 790 switch (errno) { 791 case EIO: 792 return (VT_EIO); 793 case EINVAL: 794 return (VT_EINVAL); 795 default: 796 return (VT_ERROR); 797 } 798 } 799 /* if it's a metadevice we're done */ 800 if (md_flag) { 801 free(dk_ioc.dki_data); 802 return (0); 803 } 804 /* write backup partition array */ 805 dk_ioc.dki_lba = vtoc->efi_last_u_lba + 1; 806 dk_ioc.dki_length -= vtoc->efi_lbasize; 807 dk_ioc.dki_data++; 808 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 809 /* 810 * we wrote the primary label okay, so don't fail 811 */ 812 if (efi_debug) { 813 (void) fprintf(stderr, 814 "write of backup partitions to block %llu " 815 "failed, errno %d\n", 816 vtoc->efi_last_u_lba + 1, 817 errno); 818 } 819 } 820 /* 821 * now swap MyLBA and AlternateLBA fields and write backup 822 * partition table header 823 */ 824 dk_ioc.dki_lba = vtoc->efi_last_lba; 825 dk_ioc.dki_length = vtoc->efi_lbasize; 826 dk_ioc.dki_data--; 827 efi->efi_gpt_AlternateLBA = LE_64(1ULL); 828 efi->efi_gpt_MyLBA = LE_64(vtoc->efi_last_lba); 829 efi->efi_gpt_PartitionEntryLBA = LE_64(vtoc->efi_last_u_lba + 1); 830 efi->efi_gpt_HeaderCRC32 = 0; 831 efi->efi_gpt_HeaderCRC32 = 832 LE_32(efi_crc32((unsigned char *)dk_ioc.dki_data, 833 sizeof (struct efi_gpt))); 834 835 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 836 if (efi_debug) { 837 (void) fprintf(stderr, 838 "write of backup header to block %llu failed, " 839 "errno %d\n", 840 vtoc->efi_last_lba, 841 errno); 842 } 843 } 844 /* write the PMBR */ 845 (void) write_pmbr(fd, vtoc); 846 free(dk_ioc.dki_data); 847 return (0); 848 } 849 850 void 851 efi_free(struct dk_gpt *ptr) 852 { 853 free(ptr); 854 } 855 856 /* 857 * Input: File descriptor 858 * Output: 1 if disk is >1TB OR has an EFI label, 0 otherwise. 859 */ 860 int 861 efi_type(int fd) 862 { 863 struct vtoc vtoc; 864 865 if (ioctl(fd, DKIOCGVTOC, &vtoc) == -1) { 866 if (errno == ENOTSUP) { 867 return (1); 868 } 869 } 870 return (0); 871 } 872 873 void 874 efi_err_check(struct dk_gpt *vtoc) 875 { 876 int resv_part = -1; 877 int i, j; 878 diskaddr_t istart, jstart, isize, jsize, endsect; 879 int overlap = 0; 880 881 /* 882 * make sure no partitions overlap 883 */ 884 for (i = 0; i < vtoc->efi_nparts; i++) { 885 /* It can't be unassigned and have an actual size */ 886 if ((vtoc->efi_parts[i].p_tag == V_UNASSIGNED) && 887 (vtoc->efi_parts[i].p_size != 0)) { 888 (void) fprintf(stderr, 889 "partition %d is \"unassigned\" but has a size " 890 "of %llu\n", i, vtoc->efi_parts[i].p_size); 891 } 892 if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) { 893 continue; 894 } 895 if (vtoc->efi_parts[i].p_tag == V_RESERVED) { 896 if (resv_part != -1) { 897 (void) fprintf(stderr, 898 "found duplicate reserved partition at " 899 "%d\n", i); 900 } 901 resv_part = i; 902 if (vtoc->efi_parts[i].p_size != EFI_MIN_RESV_SIZE) 903 (void) fprintf(stderr, 904 "Warning: reserved partition size must " 905 "be %d sectors\n", EFI_MIN_RESV_SIZE); 906 } 907 if ((vtoc->efi_parts[i].p_start < vtoc->efi_first_u_lba) || 908 (vtoc->efi_parts[i].p_start > vtoc->efi_last_u_lba)) { 909 (void) fprintf(stderr, 910 "Partition %d starts at %llu\n", 911 i, 912 vtoc->efi_parts[i].p_start); 913 (void) fprintf(stderr, 914 "It must be between %llu and %llu.\n", 915 vtoc->efi_first_u_lba, 916 vtoc->efi_last_u_lba); 917 } 918 if ((vtoc->efi_parts[i].p_start + 919 vtoc->efi_parts[i].p_size < 920 vtoc->efi_first_u_lba) || 921 (vtoc->efi_parts[i].p_start + 922 vtoc->efi_parts[i].p_size > 923 vtoc->efi_last_u_lba + 1)) { 924 (void) fprintf(stderr, 925 "Partition %d ends at %llu\n", 926 i, 927 vtoc->efi_parts[i].p_start + 928 vtoc->efi_parts[i].p_size); 929 (void) fprintf(stderr, 930 "It must be between %llu and %llu.\n", 931 vtoc->efi_first_u_lba, 932 vtoc->efi_last_u_lba); 933 } 934 935 for (j = 0; j < vtoc->efi_nparts; j++) { 936 isize = vtoc->efi_parts[i].p_size; 937 jsize = vtoc->efi_parts[j].p_size; 938 istart = vtoc->efi_parts[i].p_start; 939 jstart = vtoc->efi_parts[j].p_start; 940 if ((i != j) && (isize != 0) && (jsize != 0)) { 941 endsect = jstart + jsize -1; 942 if ((jstart <= istart) && 943 (istart <= endsect)) { 944 if (!overlap) { 945 (void) fprintf(stderr, 946 "label error: EFI Labels do not " 947 "support overlapping partitions\n"); 948 } 949 (void) fprintf(stderr, 950 "Partition %d overlaps partition " 951 "%d.\n", i, j); 952 overlap = 1; 953 } 954 } 955 } 956 } 957 /* make sure there is a reserved partition */ 958 if (resv_part == -1) { 959 (void) fprintf(stderr, 960 "no reserved partition found\n"); 961 } 962 } 963 964 /* 965 * We need to get information necessary to construct a *new* efi 966 * label type 967 */ 968 int 969 efi_auto_sense(int fd, struct dk_gpt **vtoc) 970 { 971 972 int i; 973 974 /* 975 * Now build the default partition table 976 */ 977 if (efi_alloc_and_init(fd, EFI_NUMPAR, vtoc) != 0) { 978 if (efi_debug) { 979 (void) fprintf(stderr, "efi_alloc_and_init failed.\n"); 980 } 981 return (-1); 982 } 983 984 for (i = 0; i < min((*vtoc)->efi_nparts, V_NUMPAR); i++) { 985 (*vtoc)->efi_parts[i].p_tag = default_vtoc_map[i].p_tag; 986 (*vtoc)->efi_parts[i].p_flag = default_vtoc_map[i].p_flag; 987 (*vtoc)->efi_parts[i].p_start = 0; 988 (*vtoc)->efi_parts[i].p_size = 0; 989 } 990 /* 991 * Make constants first 992 * and variable partitions later 993 */ 994 995 /* root partition - s0 128 MB */ 996 (*vtoc)->efi_parts[0].p_start = 34; 997 (*vtoc)->efi_parts[0].p_size = 262144; 998 999 /* partition - s1 128 MB */ 1000 (*vtoc)->efi_parts[1].p_start = 262178; 1001 (*vtoc)->efi_parts[1].p_size = 262144; 1002 1003 /* partition -s2 is NOT the Backup disk */ 1004 (*vtoc)->efi_parts[2].p_tag = V_UNASSIGNED; 1005 1006 /* partition -s6 /usr partition - HOG */ 1007 (*vtoc)->efi_parts[6].p_start = 524322; 1008 (*vtoc)->efi_parts[6].p_size = (*vtoc)->efi_last_u_lba - 524322 1009 - (1024 * 16); 1010 1011 /* efi reserved partition - s9 16K */ 1012 (*vtoc)->efi_parts[8].p_start = (*vtoc)->efi_last_u_lba - (1024 * 16); 1013 (*vtoc)->efi_parts[8].p_size = (1024 * 16); 1014 (*vtoc)->efi_parts[8].p_tag = V_RESERVED; 1015 return (0); 1016 } 1017