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 = disk_info.dki_lbsize; 376 user_length = vtoc->efi_nparts; 377 efi = dk_ioc.dki_data; 378 if (md_flag) { 379 dk_ioc.dki_length = label_len; 380 if (efi_ioctl(fd, DKIOCGETEFI, &dk_ioc) == -1) { 381 switch (errno) { 382 case EIO: 383 return (VT_EIO); 384 default: 385 return (VT_ERROR); 386 } 387 } 388 } else if ((rval = check_label(fd, &dk_ioc)) == VT_EINVAL) { 389 /* no valid label here; try the alternate */ 390 dk_ioc.dki_lba = disk_info.dki_capacity - 1; 391 dk_ioc.dki_length = disk_info.dki_lbsize; 392 rval = check_label(fd, &dk_ioc); 393 if (rval != 0) { 394 /* 395 * This is a workaround for legacy systems. 396 * 397 * In the past, the last sector of SCSI disk was 398 * invisible on x86 platform. At that time, backup 399 * label was saved on the next to the last sector. 400 * It is possible for users to move a disk from 401 * previous solaris system to present system. 402 */ 403 dk_ioc.dki_lba = disk_info.dki_capacity - 2; 404 dk_ioc.dki_length = disk_info.dki_lbsize; 405 rval = check_label(fd, &dk_ioc); 406 if (efi_debug && (rval == 0)) { 407 (void) fprintf(stderr, 408 "efi_read: primary label corrupt; " 409 "using legacy EFI backup label\n"); 410 } 411 } 412 413 if (rval == 0) { 414 if (efi_debug) { 415 (void) fprintf(stderr, 416 "efi_read: primary label corrupt; " 417 "using backup\n"); 418 } 419 dk_ioc.dki_lba = LE_64(efi->efi_gpt_PartitionEntryLBA); 420 vtoc->efi_flags |= EFI_GPT_PRIMARY_CORRUPT; 421 vtoc->efi_nparts = 422 LE_32(efi->efi_gpt_NumberOfPartitionEntries); 423 /* 424 * partitions are between last usable LBA and 425 * backup partition header 426 */ 427 dk_ioc.dki_data++; 428 dk_ioc.dki_length = disk_info.dki_capacity - 429 dk_ioc.dki_lba - 1; 430 dk_ioc.dki_length *= disk_info.dki_lbsize; 431 if (dk_ioc.dki_length > (len_t)label_len) { 432 rval = VT_EINVAL; 433 } else { 434 rval = efi_ioctl(fd, DKIOCGETEFI, &dk_ioc); 435 } 436 } 437 } else { 438 dk_ioc.dki_lba = LE_64(efi->efi_gpt_PartitionEntryLBA); 439 dk_ioc.dki_data++; 440 dk_ioc.dki_length = label_len - disk_info.dki_lbsize; 441 rval = efi_ioctl(fd, DKIOCGETEFI, &dk_ioc); 442 } 443 if (rval < 0) { 444 free(efi); 445 return (rval); 446 } 447 448 /* LINTED -- always longlong aligned */ 449 efi_parts = (efi_gpe_t *)(((char *)efi) + disk_info.dki_lbsize); 450 451 /* 452 * Assemble this into a "dk_gpt" struct for easier 453 * digestibility by applications. 454 */ 455 vtoc->efi_version = LE_32(efi->efi_gpt_Revision); 456 vtoc->efi_nparts = LE_32(efi->efi_gpt_NumberOfPartitionEntries); 457 vtoc->efi_part_size = LE_32(efi->efi_gpt_SizeOfPartitionEntry); 458 vtoc->efi_lbasize = disk_info.dki_lbsize; 459 vtoc->efi_last_lba = disk_info.dki_capacity - 1; 460 vtoc->efi_first_u_lba = LE_64(efi->efi_gpt_FirstUsableLBA); 461 vtoc->efi_last_u_lba = LE_64(efi->efi_gpt_LastUsableLBA); 462 UUID_LE_CONVERT(vtoc->efi_disk_uguid, efi->efi_gpt_DiskGUID); 463 464 /* 465 * If the array the user passed in is too small, set the length 466 * to what it needs to be and return 467 */ 468 if (user_length < vtoc->efi_nparts) { 469 return (VT_EINVAL); 470 } 471 472 for (i = 0; i < vtoc->efi_nparts; i++) { 473 474 UUID_LE_CONVERT(vtoc->efi_parts[i].p_guid, 475 efi_parts[i].efi_gpe_PartitionTypeGUID); 476 477 for (j = 0; 478 j < sizeof (conversion_array) / sizeof (struct uuid_to_ptag); 479 j++) { 480 481 if (bcmp(&vtoc->efi_parts[i].p_guid, 482 &conversion_array[j].uuid, 483 sizeof (struct uuid)) == 0) { 484 vtoc->efi_parts[i].p_tag = j; 485 break; 486 } 487 } 488 if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) 489 continue; 490 vtoc->efi_parts[i].p_flag = 491 LE_16(efi_parts[i].efi_gpe_Attributes.PartitionAttrs); 492 vtoc->efi_parts[i].p_start = 493 LE_64(efi_parts[i].efi_gpe_StartingLBA); 494 vtoc->efi_parts[i].p_size = 495 LE_64(efi_parts[i].efi_gpe_EndingLBA) - 496 vtoc->efi_parts[i].p_start + 1; 497 for (j = 0; j < EFI_PART_NAME_LEN; j++) { 498 vtoc->efi_parts[i].p_name[j] = 499 (uchar_t)LE_16(efi_parts[i].efi_gpe_PartitionName[j]); 500 } 501 502 UUID_LE_CONVERT(vtoc->efi_parts[i].p_uguid, 503 efi_parts[i].efi_gpe_UniquePartitionGUID); 504 } 505 free(efi); 506 507 return (dki_info.dki_partition); 508 } 509 510 /* writes a "protective" MBR */ 511 static int 512 write_pmbr(int fd, struct dk_gpt *vtoc) 513 { 514 dk_efi_t dk_ioc; 515 struct mboot mb; 516 uchar_t *cp; 517 diskaddr_t size_in_lba; 518 519 mb.signature = LE_16(MBB_MAGIC); 520 bzero(&mb.parts, sizeof (mb.parts)); 521 cp = (uchar_t *)&mb.parts[0]; 522 /* bootable or not */ 523 *cp++ = 0; 524 /* beginning CHS; 0xffffff if not representable */ 525 *cp++ = 0xff; 526 *cp++ = 0xff; 527 *cp++ = 0xff; 528 /* OS type */ 529 *cp++ = EFI_PMBR; 530 /* ending CHS; 0xffffff if not representable */ 531 *cp++ = 0xff; 532 *cp++ = 0xff; 533 *cp++ = 0xff; 534 /* starting LBA: 1 (little endian format) by EFI definition */ 535 *cp++ = 0x01; 536 *cp++ = 0x00; 537 *cp++ = 0x00; 538 *cp++ = 0x00; 539 /* ending LBA: last block on the disk (little endian format) */ 540 size_in_lba = vtoc->efi_last_lba; 541 if (size_in_lba < 0xffffffff) { 542 *cp++ = (size_in_lba & 0x000000ff); 543 *cp++ = (size_in_lba & 0x0000ff00) >> 8; 544 *cp++ = (size_in_lba & 0x00ff0000) >> 16; 545 *cp++ = (size_in_lba & 0xff000000) >> 24; 546 } else { 547 *cp++ = 0xff; 548 *cp++ = 0xff; 549 *cp++ = 0xff; 550 *cp++ = 0xff; 551 } 552 /* LINTED -- always longlong aligned */ 553 dk_ioc.dki_data = (efi_gpt_t *)&mb; 554 dk_ioc.dki_lba = 0; 555 dk_ioc.dki_length = sizeof (mb); 556 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 557 switch (errno) { 558 case EIO: 559 return (VT_EIO); 560 case EINVAL: 561 return (VT_EINVAL); 562 default: 563 return (VT_ERROR); 564 } 565 } 566 return (0); 567 } 568 569 /* make sure the user specified something reasonable */ 570 static int 571 check_input(struct dk_gpt *vtoc) 572 { 573 int resv_part = -1; 574 int i, j; 575 diskaddr_t istart, jstart, isize, jsize, endsect; 576 577 /* 578 * Sanity-check the input (make sure no partitions overlap) 579 */ 580 for (i = 0; i < vtoc->efi_nparts; i++) { 581 /* It can't be unassigned and have an actual size */ 582 if ((vtoc->efi_parts[i].p_tag == V_UNASSIGNED) && 583 (vtoc->efi_parts[i].p_size != 0)) { 584 if (efi_debug) { 585 (void) fprintf(stderr, 586 "partition %d is \"unassigned\" but has a size of %llu", 587 i, 588 vtoc->efi_parts[i].p_size); 589 } 590 return (VT_EINVAL); 591 } 592 if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) { 593 if (uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_guid)) 594 continue; 595 /* we have encountered an unknown uuid */ 596 vtoc->efi_parts[i].p_tag = 0xff; 597 } 598 if (vtoc->efi_parts[i].p_tag == V_RESERVED) { 599 if (resv_part != -1) { 600 if (efi_debug) { 601 (void) fprintf(stderr, 602 "found duplicate reserved partition at %d\n", 603 i); 604 } 605 return (VT_EINVAL); 606 } 607 resv_part = i; 608 } 609 if ((vtoc->efi_parts[i].p_start < vtoc->efi_first_u_lba) || 610 (vtoc->efi_parts[i].p_start > vtoc->efi_last_u_lba)) { 611 if (efi_debug) { 612 (void) fprintf(stderr, 613 "Partition %d starts at %llu. ", 614 i, 615 vtoc->efi_parts[i].p_start); 616 (void) fprintf(stderr, 617 "It must be between %llu and %llu.\n", 618 vtoc->efi_first_u_lba, 619 vtoc->efi_last_u_lba); 620 } 621 return (VT_EINVAL); 622 } 623 if ((vtoc->efi_parts[i].p_start + 624 vtoc->efi_parts[i].p_size < 625 vtoc->efi_first_u_lba) || 626 (vtoc->efi_parts[i].p_start + 627 vtoc->efi_parts[i].p_size > 628 vtoc->efi_last_u_lba + 1)) { 629 if (efi_debug) { 630 (void) fprintf(stderr, 631 "Partition %d ends at %llu. ", 632 i, 633 vtoc->efi_parts[i].p_start + 634 vtoc->efi_parts[i].p_size); 635 (void) fprintf(stderr, 636 "It must be between %llu and %llu.\n", 637 vtoc->efi_first_u_lba, 638 vtoc->efi_last_u_lba); 639 } 640 return (VT_EINVAL); 641 } 642 643 for (j = 0; j < vtoc->efi_nparts; j++) { 644 isize = vtoc->efi_parts[i].p_size; 645 jsize = vtoc->efi_parts[j].p_size; 646 istart = vtoc->efi_parts[i].p_start; 647 jstart = vtoc->efi_parts[j].p_start; 648 if ((i != j) && (isize != 0) && (jsize != 0)) { 649 endsect = jstart + jsize -1; 650 if ((jstart <= istart) && 651 (istart <= endsect)) { 652 if (efi_debug) { 653 (void) fprintf(stderr, 654 "Partition %d overlaps partition %d.", 655 i, j); 656 } 657 return (VT_EINVAL); 658 } 659 } 660 } 661 } 662 /* just a warning for now */ 663 if ((resv_part == -1) && efi_debug) { 664 (void) fprintf(stderr, 665 "no reserved partition found\n"); 666 } 667 return (0); 668 } 669 670 /* 671 * write EFI label and backup label 672 */ 673 int 674 efi_write(int fd, struct dk_gpt *vtoc) 675 { 676 dk_efi_t dk_ioc; 677 efi_gpt_t *efi; 678 efi_gpe_t *efi_parts; 679 int i, j; 680 struct dk_cinfo dki_info; 681 int md_flag = 0; 682 683 if (ioctl(fd, DKIOCINFO, (caddr_t)&dki_info) == -1) { 684 if (efi_debug) 685 (void) fprintf(stderr, "DKIOCINFO errno 0x%x\n", errno); 686 switch (errno) { 687 case EIO: 688 return (VT_EIO); 689 case EINVAL: 690 return (VT_EINVAL); 691 default: 692 return (VT_ERROR); 693 } 694 } 695 696 /* check if we are dealing wih a metadevice */ 697 if ((strncmp(dki_info.dki_cname, "pseudo", 7) == 0) && 698 (strncmp(dki_info.dki_dname, "md", 3) == 0)) { 699 md_flag = 1; 700 } 701 702 if (check_input(vtoc)) { 703 /* 704 * not valid; if it's a metadevice just pass it down 705 * because SVM will do its own checking 706 */ 707 if (md_flag == 0) { 708 return (VT_EINVAL); 709 } 710 } 711 712 dk_ioc.dki_lba = 1; 713 if (NBLOCKS(vtoc->efi_nparts, vtoc->efi_lbasize) < 34) { 714 dk_ioc.dki_length = EFI_MIN_ARRAY_SIZE + vtoc->efi_lbasize; 715 } else { 716 dk_ioc.dki_length = NBLOCKS(vtoc->efi_nparts, 717 vtoc->efi_lbasize) * 718 vtoc->efi_lbasize; 719 } 720 721 if ((dk_ioc.dki_data = calloc(dk_ioc.dki_length, 1)) == NULL) 722 return (VT_ERROR); 723 724 efi = dk_ioc.dki_data; 725 726 /* stuff user's input into EFI struct */ 727 efi->efi_gpt_Signature = LE_64(EFI_SIGNATURE); 728 efi->efi_gpt_Revision = LE_32(vtoc->efi_version); /* 0x02000100 */ 729 efi->efi_gpt_HeaderSize = LE_32(sizeof (struct efi_gpt)); 730 efi->efi_gpt_Reserved1 = 0; 731 efi->efi_gpt_MyLBA = LE_64(1ULL); 732 efi->efi_gpt_AlternateLBA = LE_64(vtoc->efi_last_lba); 733 efi->efi_gpt_FirstUsableLBA = LE_64(vtoc->efi_first_u_lba); 734 efi->efi_gpt_LastUsableLBA = LE_64(vtoc->efi_last_u_lba); 735 efi->efi_gpt_PartitionEntryLBA = LE_64(2ULL); 736 efi->efi_gpt_NumberOfPartitionEntries = LE_32(vtoc->efi_nparts); 737 efi->efi_gpt_SizeOfPartitionEntry = LE_32(sizeof (struct efi_gpe)); 738 UUID_LE_CONVERT(efi->efi_gpt_DiskGUID, vtoc->efi_disk_uguid); 739 740 /* LINTED -- always longlong aligned */ 741 efi_parts = (efi_gpe_t *)((char *)dk_ioc.dki_data + sizeof (efi_gpt_t)); 742 743 for (i = 0; i < vtoc->efi_nparts; i++) { 744 for (j = 0; 745 j < sizeof (conversion_array) / sizeof (struct uuid_to_ptag); 746 j++) { 747 748 if (vtoc->efi_parts[i].p_tag == j) { 749 UUID_LE_CONVERT( 750 efi_parts[i].efi_gpe_PartitionTypeGUID, 751 conversion_array[j].uuid); 752 break; 753 } 754 } 755 756 if (j == sizeof (conversion_array) / sizeof (struct uuid_to_ptag)) { 757 /* 758 * If we didn't have a matching uuid match, bail here. 759 * Don't write a label with unknown uuid. 760 */ 761 if (efi_debug) 762 (void) fprintf(stderr, "Unknown uuid for p_tag %d\n", 763 vtoc->efi_parts[i].p_tag); 764 return (VT_EINVAL); 765 } 766 767 efi_parts[i].efi_gpe_StartingLBA = 768 LE_64(vtoc->efi_parts[i].p_start); 769 efi_parts[i].efi_gpe_EndingLBA = 770 LE_64(vtoc->efi_parts[i].p_start + 771 vtoc->efi_parts[i].p_size - 1); 772 efi_parts[i].efi_gpe_Attributes.PartitionAttrs = 773 LE_16(vtoc->efi_parts[i].p_flag); 774 for (j = 0; j < EFI_PART_NAME_LEN; j++) { 775 efi_parts[i].efi_gpe_PartitionName[j] = 776 LE_16((ushort_t)vtoc->efi_parts[i].p_name[j]); 777 } 778 if ((vtoc->efi_parts[i].p_tag != V_UNASSIGNED) && 779 uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_uguid)) { 780 (void) uuid_generate((uchar_t *) 781 &vtoc->efi_parts[i].p_uguid); 782 } 783 bcopy(&vtoc->efi_parts[i].p_uguid, 784 &efi_parts[i].efi_gpe_UniquePartitionGUID, 785 sizeof (uuid_t)); 786 } 787 efi->efi_gpt_PartitionEntryArrayCRC32 = 788 LE_32(efi_crc32((unsigned char *)efi_parts, 789 vtoc->efi_nparts * (int)sizeof (struct efi_gpe))); 790 efi->efi_gpt_HeaderCRC32 = 791 LE_32(efi_crc32((unsigned char *)efi, sizeof (struct efi_gpt))); 792 793 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 794 free(dk_ioc.dki_data); 795 switch (errno) { 796 case EIO: 797 return (VT_EIO); 798 case EINVAL: 799 return (VT_EINVAL); 800 default: 801 return (VT_ERROR); 802 } 803 } 804 /* if it's a metadevice we're done */ 805 if (md_flag) { 806 free(dk_ioc.dki_data); 807 return (0); 808 } 809 /* write backup partition array */ 810 dk_ioc.dki_lba = vtoc->efi_last_u_lba + 1; 811 dk_ioc.dki_length -= vtoc->efi_lbasize; 812 dk_ioc.dki_data++; 813 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 814 /* 815 * we wrote the primary label okay, so don't fail 816 */ 817 if (efi_debug) { 818 (void) fprintf(stderr, 819 "write of backup partitions to block %llu " 820 "failed, errno %d\n", 821 vtoc->efi_last_u_lba + 1, 822 errno); 823 } 824 } 825 /* 826 * now swap MyLBA and AlternateLBA fields and write backup 827 * partition table header 828 */ 829 dk_ioc.dki_lba = vtoc->efi_last_lba; 830 dk_ioc.dki_length = vtoc->efi_lbasize; 831 dk_ioc.dki_data--; 832 efi->efi_gpt_AlternateLBA = LE_64(1ULL); 833 efi->efi_gpt_MyLBA = LE_64(vtoc->efi_last_lba); 834 efi->efi_gpt_PartitionEntryLBA = LE_64(vtoc->efi_last_u_lba + 1); 835 efi->efi_gpt_HeaderCRC32 = 0; 836 efi->efi_gpt_HeaderCRC32 = 837 LE_32(efi_crc32((unsigned char *)dk_ioc.dki_data, 838 sizeof (struct efi_gpt))); 839 840 if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { 841 if (efi_debug) { 842 (void) fprintf(stderr, 843 "write of backup header to block %llu failed, " 844 "errno %d\n", 845 vtoc->efi_last_lba, 846 errno); 847 } 848 } 849 /* write the PMBR */ 850 (void) write_pmbr(fd, vtoc); 851 free(dk_ioc.dki_data); 852 return (0); 853 } 854 855 void 856 efi_free(struct dk_gpt *ptr) 857 { 858 free(ptr); 859 } 860 861 /* 862 * Input: File descriptor 863 * Output: 1 if disk is >1TB OR has an EFI label, 0 otherwise. 864 */ 865 int 866 efi_type(int fd) 867 { 868 struct vtoc vtoc; 869 870 if (ioctl(fd, DKIOCGVTOC, &vtoc) == -1) { 871 if (errno == ENOTSUP) { 872 return (1); 873 } 874 } 875 return (0); 876 } 877 878 void 879 efi_err_check(struct dk_gpt *vtoc) 880 { 881 int resv_part = -1; 882 int i, j; 883 diskaddr_t istart, jstart, isize, jsize, endsect; 884 int overlap = 0; 885 886 /* 887 * make sure no partitions overlap 888 */ 889 for (i = 0; i < vtoc->efi_nparts; i++) { 890 /* It can't be unassigned and have an actual size */ 891 if ((vtoc->efi_parts[i].p_tag == V_UNASSIGNED) && 892 (vtoc->efi_parts[i].p_size != 0)) { 893 (void) fprintf(stderr, 894 "partition %d is \"unassigned\" but has a size " 895 "of %llu\n", i, vtoc->efi_parts[i].p_size); 896 } 897 if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) { 898 continue; 899 } 900 if (vtoc->efi_parts[i].p_tag == V_RESERVED) { 901 if (resv_part != -1) { 902 (void) fprintf(stderr, 903 "found duplicate reserved partition at " 904 "%d\n", i); 905 } 906 resv_part = i; 907 if (vtoc->efi_parts[i].p_size != EFI_MIN_RESV_SIZE) 908 (void) fprintf(stderr, 909 "Warning: reserved partition size must " 910 "be %d sectors\n", EFI_MIN_RESV_SIZE); 911 } 912 if ((vtoc->efi_parts[i].p_start < vtoc->efi_first_u_lba) || 913 (vtoc->efi_parts[i].p_start > vtoc->efi_last_u_lba)) { 914 (void) fprintf(stderr, 915 "Partition %d starts at %llu\n", 916 i, 917 vtoc->efi_parts[i].p_start); 918 (void) fprintf(stderr, 919 "It must be between %llu and %llu.\n", 920 vtoc->efi_first_u_lba, 921 vtoc->efi_last_u_lba); 922 } 923 if ((vtoc->efi_parts[i].p_start + 924 vtoc->efi_parts[i].p_size < 925 vtoc->efi_first_u_lba) || 926 (vtoc->efi_parts[i].p_start + 927 vtoc->efi_parts[i].p_size > 928 vtoc->efi_last_u_lba + 1)) { 929 (void) fprintf(stderr, 930 "Partition %d ends at %llu\n", 931 i, 932 vtoc->efi_parts[i].p_start + 933 vtoc->efi_parts[i].p_size); 934 (void) fprintf(stderr, 935 "It must be between %llu and %llu.\n", 936 vtoc->efi_first_u_lba, 937 vtoc->efi_last_u_lba); 938 } 939 940 for (j = 0; j < vtoc->efi_nparts; j++) { 941 isize = vtoc->efi_parts[i].p_size; 942 jsize = vtoc->efi_parts[j].p_size; 943 istart = vtoc->efi_parts[i].p_start; 944 jstart = vtoc->efi_parts[j].p_start; 945 if ((i != j) && (isize != 0) && (jsize != 0)) { 946 endsect = jstart + jsize -1; 947 if ((jstart <= istart) && 948 (istart <= endsect)) { 949 if (!overlap) { 950 (void) fprintf(stderr, 951 "label error: EFI Labels do not " 952 "support overlapping partitions\n"); 953 } 954 (void) fprintf(stderr, 955 "Partition %d overlaps partition " 956 "%d.\n", i, j); 957 overlap = 1; 958 } 959 } 960 } 961 } 962 /* make sure there is a reserved partition */ 963 if (resv_part == -1) { 964 (void) fprintf(stderr, 965 "no reserved partition found\n"); 966 } 967 } 968 969 /* 970 * We need to get information necessary to construct a *new* efi 971 * label type 972 */ 973 int 974 efi_auto_sense(int fd, struct dk_gpt **vtoc) 975 { 976 977 int i; 978 979 /* 980 * Now build the default partition table 981 */ 982 if (efi_alloc_and_init(fd, EFI_NUMPAR, vtoc) != 0) { 983 if (efi_debug) { 984 (void) fprintf(stderr, "efi_alloc_and_init failed.\n"); 985 } 986 return (-1); 987 } 988 989 for (i = 0; i < min((*vtoc)->efi_nparts, V_NUMPAR); i++) { 990 (*vtoc)->efi_parts[i].p_tag = default_vtoc_map[i].p_tag; 991 (*vtoc)->efi_parts[i].p_flag = default_vtoc_map[i].p_flag; 992 (*vtoc)->efi_parts[i].p_start = 0; 993 (*vtoc)->efi_parts[i].p_size = 0; 994 } 995 /* 996 * Make constants first 997 * and variable partitions later 998 */ 999 1000 /* root partition - s0 128 MB */ 1001 (*vtoc)->efi_parts[0].p_start = 34; 1002 (*vtoc)->efi_parts[0].p_size = 262144; 1003 1004 /* partition - s1 128 MB */ 1005 (*vtoc)->efi_parts[1].p_start = 262178; 1006 (*vtoc)->efi_parts[1].p_size = 262144; 1007 1008 /* partition -s2 is NOT the Backup disk */ 1009 (*vtoc)->efi_parts[2].p_tag = V_UNASSIGNED; 1010 1011 /* partition -s6 /usr partition - HOG */ 1012 (*vtoc)->efi_parts[6].p_start = 524322; 1013 (*vtoc)->efi_parts[6].p_size = (*vtoc)->efi_last_u_lba - 524322 1014 - (1024 * 16); 1015 1016 /* efi reserved partition - s9 16K */ 1017 (*vtoc)->efi_parts[8].p_start = (*vtoc)->efi_last_u_lba - (1024 * 16); 1018 (*vtoc)->efi_parts[8].p_size = (1024 * 16); 1019 (*vtoc)->efi_parts[8].p_tag = V_RESERVED; 1020 return (0); 1021 } 1022