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.
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.
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]
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
31 #include <uuid/uuid.h>
33 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/dktp/fdisk.h>
39 #include <sys/efi_partition.h>
40 #include <sys/byteorder.h>
43 static struct uuid_to_ptag
{
45 } conversion_array
[] = {
52 { 0 }, /* STAND is never used */
56 { 0 }, /* CACHE (cachefs) is never used */
73 * Default vtoc information for non-SVr4 partitions
75 struct dk_map2 default_vtoc_map
[NDKMAP
] = {
76 { V_ROOT
, 0 }, /* a - 0 */
77 { V_SWAP
, V_UNMNT
}, /* b - 1 */
78 { V_BACKUP
, V_UNMNT
}, /* c - 2 */
79 { V_UNASSIGNED
, 0 }, /* d - 3 */
80 { V_UNASSIGNED
, 0 }, /* e - 4 */
81 { V_UNASSIGNED
, 0 }, /* f - 5 */
82 { V_USR
, 0 }, /* g - 6 */
83 { V_UNASSIGNED
, 0 }, /* h - 7 */
85 #if defined(_SUNOS_VTOC_16)
87 #if defined(i386) || defined(__amd64)
88 { V_BOOT
, V_UNMNT
}, /* i - 8 */
89 { V_ALTSCTR
, 0 }, /* j - 9 */
92 #error No VTOC format defined.
93 #endif /* defined(i386) */
95 { V_UNASSIGNED
, 0 }, /* k - 10 */
96 { V_UNASSIGNED
, 0 }, /* l - 11 */
97 { V_UNASSIGNED
, 0 }, /* m - 12 */
98 { V_UNASSIGNED
, 0 }, /* n - 13 */
99 { V_UNASSIGNED
, 0 }, /* o - 14 */
100 { V_UNASSIGNED
, 0 }, /* p - 15 */
101 #endif /* defined(_SUNOS_VTOC_16) */
110 extern unsigned int efi_crc32(const unsigned char *, unsigned int);
111 static int efi_read(int, struct dk_gpt
*);
114 read_disk_info(int fd
, diskaddr_t
*capacity
, uint_t
*lbsize
)
116 struct dk_minfo disk_info
;
118 if ((ioctl(fd
, DKIOCGMEDIAINFO
, (caddr_t
)&disk_info
)) == -1)
120 *capacity
= disk_info
.dki_capacity
;
121 *lbsize
= disk_info
.dki_lbsize
;
126 * the number of blocks the EFI label takes up (round up to nearest
129 #define NBLOCKS(p, l) (1 + ((((p) * (int)sizeof (efi_gpe_t)) + \
131 /* number of partitions -- limited by what we can malloc */
132 #define MAX_PARTS ((4294967295UL - sizeof (struct dk_gpt)) / \
133 sizeof (struct dk_part))
136 efi_alloc_and_init(int fd
, uint32_t nparts
, struct dk_gpt
**vtoc
)
145 if (read_disk_info(fd
, &capacity
, &lbsize
) != 0) {
147 (void) fprintf(stderr
,
148 "couldn't read disk information\n");
152 nblocks
= NBLOCKS(nparts
, lbsize
);
153 if ((nblocks
* lbsize
) < EFI_MIN_ARRAY_SIZE
+ lbsize
) {
154 /* 16K plus one block for the GPT */
155 nblocks
= EFI_MIN_ARRAY_SIZE
/ lbsize
+ 1;
158 if (nparts
> MAX_PARTS
) {
160 (void) fprintf(stderr
,
161 "the maximum number of partitions supported is %lu\n",
167 length
= sizeof (struct dk_gpt
) +
168 sizeof (struct dk_part
) * (nparts
- 1);
170 if ((*vtoc
= calloc(length
, 1)) == NULL
)
175 vptr
->efi_version
= EFI_VERSION_CURRENT
;
176 vptr
->efi_lbasize
= lbsize
;
177 vptr
->efi_nparts
= nparts
;
179 * add one block here for the PMBR; on disks with a 512 byte
180 * block size and 128 or fewer partitions, efi_first_u_lba
181 * should work out to "34"
183 vptr
->efi_first_u_lba
= nblocks
+ 1;
184 vptr
->efi_last_lba
= capacity
- 1;
185 vptr
->efi_altern_lba
= capacity
-1;
186 vptr
->efi_last_u_lba
= vptr
->efi_last_lba
- nblocks
;
188 (void) uuid_generate((uchar_t
*)&uuid
);
189 UUID_LE_CONVERT(vptr
->efi_disk_uguid
, uuid
);
194 * Read EFI - return partition number upon success.
197 efi_alloc_and_read(int fd
, struct dk_gpt
**vtoc
)
203 /* figure out the number of entries that would fit into 16K */
204 nparts
= EFI_MIN_ARRAY_SIZE
/ sizeof (efi_gpe_t
);
205 length
= (int) sizeof (struct dk_gpt
) +
206 (int) sizeof (struct dk_part
) * (nparts
- 1);
207 if ((*vtoc
= calloc(length
, 1)) == NULL
)
210 (*vtoc
)->efi_nparts
= nparts
;
211 rval
= efi_read(fd
, *vtoc
);
213 if ((rval
== VT_EINVAL
) && (*vtoc
)->efi_nparts
> nparts
) {
215 length
= (int) sizeof (struct dk_gpt
) +
216 (int) sizeof (struct dk_part
) *
217 ((*vtoc
)->efi_nparts
- 1);
218 nparts
= (*vtoc
)->efi_nparts
;
219 if ((tmp
= realloc(*vtoc
, length
)) == NULL
) {
225 rval
= efi_read(fd
, *vtoc
);
231 (void) fprintf(stderr
,
232 "read of EFI table failed, rval=%d\n", rval
);
242 efi_ioctl(int fd
, int cmd
, dk_efi_t
*dk_ioc
)
244 void *data
= dk_ioc
->dki_data
;
247 dk_ioc
->dki_data_64
= (uint64_t)(uintptr_t)data
;
248 error
= ioctl(fd
, cmd
, (void *)dk_ioc
);
249 dk_ioc
->dki_data
= data
;
255 check_label(int fd
, dk_efi_t
*dk_ioc
)
260 if (efi_ioctl(fd
, DKIOCGETEFI
, dk_ioc
) == -1) {
268 efi
= dk_ioc
->dki_data
;
269 if (efi
->efi_gpt_Signature
!= LE_64(EFI_SIGNATURE
)) {
271 (void) fprintf(stderr
,
272 "Bad EFI signature: 0x%llx != 0x%llx\n",
273 (long long)efi
->efi_gpt_Signature
,
274 (long long)LE_64(EFI_SIGNATURE
));
279 * check CRC of the header; the size of the header should
280 * never be larger than one block
282 crc
= efi
->efi_gpt_HeaderCRC32
;
283 efi
->efi_gpt_HeaderCRC32
= 0;
285 if (((len_t
)LE_32(efi
->efi_gpt_HeaderSize
) > dk_ioc
->dki_length
) ||
286 crc
!= LE_32(efi_crc32((unsigned char *)efi
,
287 LE_32(efi
->efi_gpt_HeaderSize
)))) {
289 (void) fprintf(stderr
,
290 "Bad EFI CRC: 0x%x != 0x%x\n",
292 LE_32(efi_crc32((unsigned char *)efi
,
293 sizeof (struct efi_gpt
))));
301 efi_read(int fd
, struct dk_gpt
*vtoc
)
308 struct dk_minfo disk_info
;
311 efi_gpe_t
*efi_parts
;
312 struct dk_cinfo dki_info
;
313 uint32_t user_length
;
314 boolean_t legacy_label
= B_FALSE
;
317 * get the partition number for this file descriptor.
319 if (ioctl(fd
, DKIOCINFO
, (caddr_t
)&dki_info
) == -1) {
321 (void) fprintf(stderr
, "DKIOCINFO errno 0x%x\n", errno
);
332 if ((strncmp(dki_info
.dki_cname
, "pseudo", 7) == 0) &&
333 (strncmp(dki_info
.dki_dname
, "md", 3) == 0)) {
335 } else if ((strncmp(dki_info
.dki_cname
, "vdc", 4) == 0) &&
336 (strncmp(dki_info
.dki_dname
, "vdc", 4) == 0)) {
338 * The controller and drive name "vdc" (virtual disk client)
339 * indicates a LDoms virtual disk.
344 /* get the LBA size */
345 if (ioctl(fd
, DKIOCGMEDIAINFO
, (caddr_t
)&disk_info
) == -1) {
347 (void) fprintf(stderr
,
348 "assuming LBA 512 bytes %d\n",
351 disk_info
.dki_lbsize
= DEV_BSIZE
;
353 if (disk_info
.dki_lbsize
== 0) {
355 (void) fprintf(stderr
,
356 "efi_read: assuming LBA 512 bytes\n");
358 disk_info
.dki_lbsize
= DEV_BSIZE
;
361 * Read the EFI GPT to figure out how many partitions we need
365 if (NBLOCKS(vtoc
->efi_nparts
, disk_info
.dki_lbsize
) < 34) {
366 label_len
= EFI_MIN_ARRAY_SIZE
+ disk_info
.dki_lbsize
;
368 label_len
= vtoc
->efi_nparts
* (int) sizeof (efi_gpe_t
) +
369 disk_info
.dki_lbsize
;
370 if (label_len
% disk_info
.dki_lbsize
) {
371 /* pad to physical sector size */
372 label_len
+= disk_info
.dki_lbsize
;
373 label_len
&= ~(disk_info
.dki_lbsize
- 1);
377 if ((dk_ioc
.dki_data
= calloc(label_len
, 1)) == NULL
)
380 dk_ioc
.dki_length
= disk_info
.dki_lbsize
;
381 user_length
= vtoc
->efi_nparts
;
382 efi
= dk_ioc
.dki_data
;
384 dk_ioc
.dki_length
= label_len
;
385 if (efi_ioctl(fd
, DKIOCGETEFI
, &dk_ioc
) == -1) {
393 } else if ((rval
= check_label(fd
, &dk_ioc
)) == VT_EINVAL
) {
395 * No valid label here; try the alternate. Note that here
396 * we just read GPT header and save it into dk_ioc.data,
397 * Later, we will read GUID partition entry array if we
398 * can get valid GPT header.
402 * This is a workaround for legacy systems. In the past, the
403 * last sector of SCSI disk was invisible on x86 platform. At
404 * that time, backup label was saved on the next to the last
405 * sector. It is possible for users to move a disk from previous
406 * solaris system to present system. Here, we attempt to search
407 * legacy backup EFI label first.
409 dk_ioc
.dki_lba
= disk_info
.dki_capacity
- 2;
410 dk_ioc
.dki_length
= disk_info
.dki_lbsize
;
411 rval
= check_label(fd
, &dk_ioc
);
412 if (rval
== VT_EINVAL
) {
414 * we didn't find legacy backup EFI label, try to
415 * search backup EFI label in the last block.
417 dk_ioc
.dki_lba
= disk_info
.dki_capacity
- 1;
418 dk_ioc
.dki_length
= disk_info
.dki_lbsize
;
419 rval
= check_label(fd
, &dk_ioc
);
421 legacy_label
= B_TRUE
;
423 (void) fprintf(stderr
,
424 "efi_read: primary label corrupt; "
425 "using EFI backup label located on"
426 " the last block\n");
429 if ((efi_debug
) && (rval
== 0))
430 (void) fprintf(stderr
, "efi_read: primary label"
431 " corrupt; using legacy EFI backup label "
432 " located on the next to last block\n");
436 dk_ioc
.dki_lba
= LE_64(efi
->efi_gpt_PartitionEntryLBA
);
437 vtoc
->efi_flags
|= EFI_GPT_PRIMARY_CORRUPT
;
439 LE_32(efi
->efi_gpt_NumberOfPartitionEntries
);
441 * Partition tables are between backup GPT header
442 * table and ParitionEntryLBA (the starting LBA of
443 * the GUID partition entries array). Now that we
444 * already got valid GPT header and saved it in
445 * dk_ioc.dki_data, we try to get GUID partition
449 dk_ioc
.dki_data
= (efi_gpt_t
*)((char *)dk_ioc
.dki_data
450 + disk_info
.dki_lbsize
);
452 dk_ioc
.dki_length
= disk_info
.dki_capacity
- 1 -
455 dk_ioc
.dki_length
= disk_info
.dki_capacity
- 2 -
457 dk_ioc
.dki_length
*= disk_info
.dki_lbsize
;
458 if (dk_ioc
.dki_length
>
459 ((len_t
)label_len
- sizeof (*dk_ioc
.dki_data
))) {
463 * read GUID partition entry array
465 rval
= efi_ioctl(fd
, DKIOCGETEFI
, &dk_ioc
);
469 } else if (rval
== 0) {
471 dk_ioc
.dki_lba
= LE_64(efi
->efi_gpt_PartitionEntryLBA
);
473 dk_ioc
.dki_data
= (efi_gpt_t
*)((char *)dk_ioc
.dki_data
474 + disk_info
.dki_lbsize
);
475 dk_ioc
.dki_length
= label_len
- disk_info
.dki_lbsize
;
476 rval
= efi_ioctl(fd
, DKIOCGETEFI
, &dk_ioc
);
478 } else if (vdc_flag
&& rval
== VT_ERROR
&& errno
== EINVAL
) {
480 * When the device is a LDoms virtual disk, the DKIOCGETEFI
481 * ioctl can fail with EINVAL if the virtual disk backend
482 * is a ZFS volume serviced by a domain running an old version
483 * of Solaris. This is because the DKIOCGETEFI ioctl was
484 * initially incorrectly implemented for a ZFS volume and it
485 * expected the GPT and GPE to be retrieved with a single ioctl.
486 * So we try to read the GPT and the GPE using that old style
490 dk_ioc
.dki_length
= label_len
;
491 rval
= check_label(fd
, &dk_ioc
);
499 /* LINTED -- always longlong aligned */
500 efi_parts
= (efi_gpe_t
*)(((char *)efi
) + disk_info
.dki_lbsize
);
503 * Assemble this into a "dk_gpt" struct for easier
504 * digestibility by applications.
506 vtoc
->efi_version
= LE_32(efi
->efi_gpt_Revision
);
507 vtoc
->efi_nparts
= LE_32(efi
->efi_gpt_NumberOfPartitionEntries
);
508 vtoc
->efi_part_size
= LE_32(efi
->efi_gpt_SizeOfPartitionEntry
);
509 vtoc
->efi_lbasize
= disk_info
.dki_lbsize
;
510 vtoc
->efi_last_lba
= disk_info
.dki_capacity
- 1;
511 vtoc
->efi_first_u_lba
= LE_64(efi
->efi_gpt_FirstUsableLBA
);
512 vtoc
->efi_last_u_lba
= LE_64(efi
->efi_gpt_LastUsableLBA
);
513 vtoc
->efi_altern_lba
= LE_64(efi
->efi_gpt_AlternateLBA
);
514 UUID_LE_CONVERT(vtoc
->efi_disk_uguid
, efi
->efi_gpt_DiskGUID
);
517 * If the array the user passed in is too small, set the length
518 * to what it needs to be and return
520 if (user_length
< vtoc
->efi_nparts
) {
524 for (i
= 0; i
< vtoc
->efi_nparts
; i
++) {
526 UUID_LE_CONVERT(vtoc
->efi_parts
[i
].p_guid
,
527 efi_parts
[i
].efi_gpe_PartitionTypeGUID
);
530 j
< sizeof (conversion_array
)
531 / sizeof (struct uuid_to_ptag
); j
++) {
533 if (bcmp(&vtoc
->efi_parts
[i
].p_guid
,
534 &conversion_array
[j
].uuid
,
535 sizeof (struct uuid
)) == 0) {
536 vtoc
->efi_parts
[i
].p_tag
= j
;
540 if (vtoc
->efi_parts
[i
].p_tag
== V_UNASSIGNED
)
542 vtoc
->efi_parts
[i
].p_flag
=
543 LE_16(efi_parts
[i
].efi_gpe_Attributes
.PartitionAttrs
);
544 vtoc
->efi_parts
[i
].p_start
=
545 LE_64(efi_parts
[i
].efi_gpe_StartingLBA
);
546 vtoc
->efi_parts
[i
].p_size
=
547 LE_64(efi_parts
[i
].efi_gpe_EndingLBA
) -
548 vtoc
->efi_parts
[i
].p_start
+ 1;
549 for (j
= 0; j
< EFI_PART_NAME_LEN
; j
++) {
550 vtoc
->efi_parts
[i
].p_name
[j
] =
552 efi_parts
[i
].efi_gpe_PartitionName
[j
]);
555 UUID_LE_CONVERT(vtoc
->efi_parts
[i
].p_uguid
,
556 efi_parts
[i
].efi_gpe_UniquePartitionGUID
);
560 return (dki_info
.dki_partition
);
563 /* writes a "protective" MBR */
565 write_pmbr(int fd
, struct dk_gpt
*vtoc
)
570 diskaddr_t size_in_lba
;
574 len
= (vtoc
->efi_lbasize
== 0) ? sizeof (mb
) : vtoc
->efi_lbasize
;
575 buf
= calloc(len
, 1);
578 * Preserve any boot code and disk signature if the first block is
582 dk_ioc
.dki_length
= len
;
583 /* LINTED -- always longlong aligned */
584 dk_ioc
.dki_data
= (efi_gpt_t
*)buf
;
585 if (efi_ioctl(fd
, DKIOCGETEFI
, &dk_ioc
) == -1) {
586 (void *) memcpy(&mb
, buf
, sizeof (mb
));
587 bzero(&mb
, sizeof (mb
));
588 mb
.signature
= LE_16(MBB_MAGIC
);
590 (void *) memcpy(&mb
, buf
, sizeof (mb
));
591 if (mb
.signature
!= LE_16(MBB_MAGIC
)) {
592 bzero(&mb
, sizeof (mb
));
593 mb
.signature
= LE_16(MBB_MAGIC
);
597 bzero(&mb
.parts
, sizeof (mb
.parts
));
598 cp
= (uchar_t
*)&mb
.parts
[0];
599 /* bootable or not */
601 /* beginning CHS; 0xffffff if not representable */
607 /* ending CHS; 0xffffff if not representable */
611 /* starting LBA: 1 (little endian format) by EFI definition */
616 /* ending LBA: last block on the disk (little endian format) */
617 size_in_lba
= vtoc
->efi_last_lba
;
618 if (size_in_lba
< 0xffffffff) {
619 *cp
++ = (size_in_lba
& 0x000000ff);
620 *cp
++ = (size_in_lba
& 0x0000ff00) >> 8;
621 *cp
++ = (size_in_lba
& 0x00ff0000) >> 16;
622 *cp
++ = (size_in_lba
& 0xff000000) >> 24;
630 (void *) memcpy(buf
, &mb
, sizeof (mb
));
631 /* LINTED -- always longlong aligned */
632 dk_ioc
.dki_data
= (efi_gpt_t
*)buf
;
634 dk_ioc
.dki_length
= len
;
635 if (efi_ioctl(fd
, DKIOCSETEFI
, &dk_ioc
) == -1) {
650 /* make sure the user specified something reasonable */
652 check_input(struct dk_gpt
*vtoc
)
656 diskaddr_t istart
, jstart
, isize
, jsize
, endsect
;
659 * Sanity-check the input (make sure no partitions overlap)
661 for (i
= 0; i
< vtoc
->efi_nparts
; i
++) {
662 /* It can't be unassigned and have an actual size */
663 if ((vtoc
->efi_parts
[i
].p_tag
== V_UNASSIGNED
) &&
664 (vtoc
->efi_parts
[i
].p_size
!= 0)) {
666 (void) fprintf(stderr
,
667 "partition %d is \"unassigned\" but has a size of %llu",
669 vtoc
->efi_parts
[i
].p_size
);
673 if (vtoc
->efi_parts
[i
].p_tag
== V_UNASSIGNED
) {
674 if (uuid_is_null((uchar_t
*)&vtoc
->efi_parts
[i
].p_guid
))
676 /* we have encountered an unknown uuid */
677 vtoc
->efi_parts
[i
].p_tag
= 0xff;
679 if (vtoc
->efi_parts
[i
].p_tag
== V_RESERVED
) {
680 if (resv_part
!= -1) {
682 (void) fprintf(stderr
,
683 "found duplicate reserved partition at %d\n",
690 if ((vtoc
->efi_parts
[i
].p_start
< vtoc
->efi_first_u_lba
) ||
691 (vtoc
->efi_parts
[i
].p_start
> vtoc
->efi_last_u_lba
)) {
693 (void) fprintf(stderr
,
694 "Partition %d starts at %llu. ",
696 vtoc
->efi_parts
[i
].p_start
);
697 (void) fprintf(stderr
,
698 "It must be between %llu and %llu.\n",
699 vtoc
->efi_first_u_lba
,
700 vtoc
->efi_last_u_lba
);
704 if ((vtoc
->efi_parts
[i
].p_start
+
705 vtoc
->efi_parts
[i
].p_size
<
706 vtoc
->efi_first_u_lba
) ||
707 (vtoc
->efi_parts
[i
].p_start
+
708 vtoc
->efi_parts
[i
].p_size
>
709 vtoc
->efi_last_u_lba
+ 1)) {
711 (void) fprintf(stderr
,
712 "Partition %d ends at %llu. ",
714 vtoc
->efi_parts
[i
].p_start
+
715 vtoc
->efi_parts
[i
].p_size
);
716 (void) fprintf(stderr
,
717 "It must be between %llu and %llu.\n",
718 vtoc
->efi_first_u_lba
,
719 vtoc
->efi_last_u_lba
);
724 for (j
= 0; j
< vtoc
->efi_nparts
; j
++) {
725 isize
= vtoc
->efi_parts
[i
].p_size
;
726 jsize
= vtoc
->efi_parts
[j
].p_size
;
727 istart
= vtoc
->efi_parts
[i
].p_start
;
728 jstart
= vtoc
->efi_parts
[j
].p_start
;
729 if ((i
!= j
) && (isize
!= 0) && (jsize
!= 0)) {
730 endsect
= jstart
+ jsize
-1;
731 if ((jstart
<= istart
) &&
732 (istart
<= endsect
)) {
734 (void) fprintf(stderr
,
735 "Partition %d overlaps partition %d.",
743 /* just a warning for now */
744 if ((resv_part
== -1) && efi_debug
) {
745 (void) fprintf(stderr
,
746 "no reserved partition found\n");
752 * add all the unallocated space to the current label
755 efi_use_whole_disk(int fd
)
757 struct dk_gpt
*efi_label
;
760 uint_t phy_last_slice
= 0;
761 diskaddr_t pl_start
= 0;
764 rval
= efi_alloc_and_read(fd
, &efi_label
);
769 /* find the last physically non-zero partition */
770 for (i
= 0; i
< efi_label
->efi_nparts
- 2; i
++) {
771 if (pl_start
< efi_label
->efi_parts
[i
].p_start
) {
772 pl_start
= efi_label
->efi_parts
[i
].p_start
;
776 pl_size
= efi_label
->efi_parts
[phy_last_slice
].p_size
;
779 * If alter_lba is 1, we are using the backup label.
780 * Since we can locate the backup label by disk capacity,
781 * there must be no unallocated space.
783 if ((efi_label
->efi_altern_lba
== 1) || (efi_label
->efi_altern_lba
784 >= efi_label
->efi_last_lba
)) {
786 (void) fprintf(stderr
,
787 "efi_use_whole_disk: requested space not found\n");
794 * If there is space between the last physically non-zero partition
795 * and the reserved partition, just add the unallocated space to this
796 * area. Otherwise, the unallocated space is added to the last
797 * physically non-zero partition.
799 if (pl_start
+ pl_size
- 1 == efi_label
->efi_last_u_lba
-
801 efi_label
->efi_parts
[phy_last_slice
].p_size
+=
802 efi_label
->efi_last_lba
- efi_label
->efi_altern_lba
;
806 * Move the reserved partition. There is currently no data in
807 * here except fabricated devids (which get generated via
808 * efi_write()). So there is no need to copy data.
810 efi_label
->efi_parts
[efi_label
->efi_nparts
- 1].p_start
+=
811 efi_label
->efi_last_lba
- efi_label
->efi_altern_lba
;
812 efi_label
->efi_last_u_lba
+= efi_label
->efi_last_lba
813 - efi_label
->efi_altern_lba
;
815 rval
= efi_write(fd
, efi_label
);
818 (void) fprintf(stderr
,
819 "efi_use_whole_disk:fail to write label, rval=%d\n",
832 * write EFI label and backup label
835 efi_write(int fd
, struct dk_gpt
*vtoc
)
839 efi_gpe_t
*efi_parts
;
841 struct dk_cinfo dki_info
;
844 diskaddr_t lba_backup_gpt_hdr
;
846 if (ioctl(fd
, DKIOCINFO
, (caddr_t
)&dki_info
) == -1) {
848 (void) fprintf(stderr
, "DKIOCINFO errno 0x%x\n", errno
);
859 /* check if we are dealing wih a metadevice */
860 if ((strncmp(dki_info
.dki_cname
, "pseudo", 7) == 0) &&
861 (strncmp(dki_info
.dki_dname
, "md", 3) == 0)) {
865 if (check_input(vtoc
)) {
867 * not valid; if it's a metadevice just pass it down
868 * because SVM will do its own checking
876 if (NBLOCKS(vtoc
->efi_nparts
, vtoc
->efi_lbasize
) < 34) {
877 dk_ioc
.dki_length
= EFI_MIN_ARRAY_SIZE
+ vtoc
->efi_lbasize
;
879 dk_ioc
.dki_length
= NBLOCKS(vtoc
->efi_nparts
,
885 * the number of blocks occupied by GUID partition entry array
887 nblocks
= dk_ioc
.dki_length
/ vtoc
->efi_lbasize
- 1;
890 * Backup GPT header is located on the block after GUID
891 * partition entry array. Here, we calculate the address
892 * for backup GPT header.
894 lba_backup_gpt_hdr
= vtoc
->efi_last_u_lba
+ 1 + nblocks
;
895 if ((dk_ioc
.dki_data
= calloc(dk_ioc
.dki_length
, 1)) == NULL
)
898 efi
= dk_ioc
.dki_data
;
900 /* stuff user's input into EFI struct */
901 efi
->efi_gpt_Signature
= LE_64(EFI_SIGNATURE
);
902 efi
->efi_gpt_Revision
= LE_32(vtoc
->efi_version
); /* 0x02000100 */
903 efi
->efi_gpt_HeaderSize
= LE_32(sizeof (struct efi_gpt
));
904 efi
->efi_gpt_Reserved1
= 0;
905 efi
->efi_gpt_MyLBA
= LE_64(1ULL);
906 efi
->efi_gpt_AlternateLBA
= LE_64(lba_backup_gpt_hdr
);
907 efi
->efi_gpt_FirstUsableLBA
= LE_64(vtoc
->efi_first_u_lba
);
908 efi
->efi_gpt_LastUsableLBA
= LE_64(vtoc
->efi_last_u_lba
);
909 efi
->efi_gpt_PartitionEntryLBA
= LE_64(2ULL);
910 efi
->efi_gpt_NumberOfPartitionEntries
= LE_32(vtoc
->efi_nparts
);
911 efi
->efi_gpt_SizeOfPartitionEntry
= LE_32(sizeof (struct efi_gpe
));
912 UUID_LE_CONVERT(efi
->efi_gpt_DiskGUID
, vtoc
->efi_disk_uguid
);
914 /* LINTED -- always longlong aligned */
915 efi_parts
= (efi_gpe_t
*)((char *)dk_ioc
.dki_data
+ vtoc
->efi_lbasize
);
917 for (i
= 0; i
< vtoc
->efi_nparts
; i
++) {
919 j
< sizeof (conversion_array
) /
920 sizeof (struct uuid_to_ptag
); j
++) {
922 if (vtoc
->efi_parts
[i
].p_tag
== j
) {
924 efi_parts
[i
].efi_gpe_PartitionTypeGUID
,
925 conversion_array
[j
].uuid
);
930 if (j
== sizeof (conversion_array
) /
931 sizeof (struct uuid_to_ptag
)) {
933 * If we didn't have a matching uuid match, bail here.
934 * Don't write a label with unknown uuid.
937 (void) fprintf(stderr
,
938 "Unknown uuid for p_tag %d\n",
939 vtoc
->efi_parts
[i
].p_tag
);
944 efi_parts
[i
].efi_gpe_StartingLBA
=
945 LE_64(vtoc
->efi_parts
[i
].p_start
);
946 efi_parts
[i
].efi_gpe_EndingLBA
=
947 LE_64(vtoc
->efi_parts
[i
].p_start
+
948 vtoc
->efi_parts
[i
].p_size
- 1);
949 efi_parts
[i
].efi_gpe_Attributes
.PartitionAttrs
=
950 LE_16(vtoc
->efi_parts
[i
].p_flag
);
951 for (j
= 0; j
< EFI_PART_NAME_LEN
; j
++) {
952 efi_parts
[i
].efi_gpe_PartitionName
[j
] =
953 LE_16((ushort_t
)vtoc
->efi_parts
[i
].p_name
[j
]);
955 if ((vtoc
->efi_parts
[i
].p_tag
!= V_UNASSIGNED
) &&
956 uuid_is_null((uchar_t
*)&vtoc
->efi_parts
[i
].p_uguid
)) {
957 (void) uuid_generate((uchar_t
*)
958 &vtoc
->efi_parts
[i
].p_uguid
);
960 bcopy(&vtoc
->efi_parts
[i
].p_uguid
,
961 &efi_parts
[i
].efi_gpe_UniquePartitionGUID
,
964 efi
->efi_gpt_PartitionEntryArrayCRC32
=
965 LE_32(efi_crc32((unsigned char *)efi_parts
,
966 vtoc
->efi_nparts
* (int)sizeof (struct efi_gpe
)));
967 efi
->efi_gpt_HeaderCRC32
=
968 LE_32(efi_crc32((unsigned char *)efi
, sizeof (struct efi_gpt
)));
970 if (efi_ioctl(fd
, DKIOCSETEFI
, &dk_ioc
) == -1) {
971 free(dk_ioc
.dki_data
);
981 /* if it's a metadevice we're done */
983 free(dk_ioc
.dki_data
);
987 /* write backup partition array */
988 dk_ioc
.dki_lba
= vtoc
->efi_last_u_lba
+ 1;
989 dk_ioc
.dki_length
-= vtoc
->efi_lbasize
;
991 dk_ioc
.dki_data
= (efi_gpt_t
*)((char *)dk_ioc
.dki_data
+
994 if (efi_ioctl(fd
, DKIOCSETEFI
, &dk_ioc
) == -1) {
996 * we wrote the primary label okay, so don't fail
999 (void) fprintf(stderr
,
1000 "write of backup partitions to block %llu "
1001 "failed, errno %d\n",
1002 vtoc
->efi_last_u_lba
+ 1,
1007 * now swap MyLBA and AlternateLBA fields and write backup
1008 * partition table header
1010 dk_ioc
.dki_lba
= lba_backup_gpt_hdr
;
1011 dk_ioc
.dki_length
= vtoc
->efi_lbasize
;
1013 dk_ioc
.dki_data
= (efi_gpt_t
*)((char *)dk_ioc
.dki_data
-
1015 efi
->efi_gpt_AlternateLBA
= LE_64(1ULL);
1016 efi
->efi_gpt_MyLBA
= LE_64(lba_backup_gpt_hdr
);
1017 efi
->efi_gpt_PartitionEntryLBA
= LE_64(vtoc
->efi_last_u_lba
+ 1);
1018 efi
->efi_gpt_HeaderCRC32
= 0;
1019 efi
->efi_gpt_HeaderCRC32
=
1020 LE_32(efi_crc32((unsigned char *)dk_ioc
.dki_data
,
1021 sizeof (struct efi_gpt
)));
1023 if (efi_ioctl(fd
, DKIOCSETEFI
, &dk_ioc
) == -1) {
1025 (void) fprintf(stderr
,
1026 "write of backup header to block %llu failed, "
1032 /* write the PMBR */
1033 (void) write_pmbr(fd
, vtoc
);
1034 free(dk_ioc
.dki_data
);
1039 efi_free(struct dk_gpt
*ptr
)
1045 * Input: File descriptor
1046 * Output: 1 if disk has an EFI label, or > 2TB with no VTOC or legacy MBR.
1053 struct extvtoc extvtoc
;
1055 if (ioctl(fd
, DKIOCGEXTVTOC
, &extvtoc
) == -1) {
1056 if (errno
== ENOTSUP
)
1058 else if (errno
== ENOTTY
) {
1059 if (ioctl(fd
, DKIOCGVTOC
, &vtoc
) == -1)
1060 if (errno
== ENOTSUP
)
1068 efi_err_check(struct dk_gpt
*vtoc
)
1072 diskaddr_t istart
, jstart
, isize
, jsize
, endsect
;
1076 * make sure no partitions overlap
1078 for (i
= 0; i
< vtoc
->efi_nparts
; i
++) {
1079 /* It can't be unassigned and have an actual size */
1080 if ((vtoc
->efi_parts
[i
].p_tag
== V_UNASSIGNED
) &&
1081 (vtoc
->efi_parts
[i
].p_size
!= 0)) {
1082 (void) fprintf(stderr
,
1083 "partition %d is \"unassigned\" but has a size "
1084 "of %llu\n", i
, vtoc
->efi_parts
[i
].p_size
);
1086 if (vtoc
->efi_parts
[i
].p_tag
== V_UNASSIGNED
) {
1089 if (vtoc
->efi_parts
[i
].p_tag
== V_RESERVED
) {
1090 if (resv_part
!= -1) {
1091 (void) fprintf(stderr
,
1092 "found duplicate reserved partition at "
1096 if (vtoc
->efi_parts
[i
].p_size
!= EFI_MIN_RESV_SIZE
)
1097 (void) fprintf(stderr
,
1098 "Warning: reserved partition size must "
1099 "be %d sectors\n", EFI_MIN_RESV_SIZE
);
1101 if ((vtoc
->efi_parts
[i
].p_start
< vtoc
->efi_first_u_lba
) ||
1102 (vtoc
->efi_parts
[i
].p_start
> vtoc
->efi_last_u_lba
)) {
1103 (void) fprintf(stderr
,
1104 "Partition %d starts at %llu\n",
1106 vtoc
->efi_parts
[i
].p_start
);
1107 (void) fprintf(stderr
,
1108 "It must be between %llu and %llu.\n",
1109 vtoc
->efi_first_u_lba
,
1110 vtoc
->efi_last_u_lba
);
1112 if ((vtoc
->efi_parts
[i
].p_start
+
1113 vtoc
->efi_parts
[i
].p_size
<
1114 vtoc
->efi_first_u_lba
) ||
1115 (vtoc
->efi_parts
[i
].p_start
+
1116 vtoc
->efi_parts
[i
].p_size
>
1117 vtoc
->efi_last_u_lba
+ 1)) {
1118 (void) fprintf(stderr
,
1119 "Partition %d ends at %llu\n",
1121 vtoc
->efi_parts
[i
].p_start
+
1122 vtoc
->efi_parts
[i
].p_size
);
1123 (void) fprintf(stderr
,
1124 "It must be between %llu and %llu.\n",
1125 vtoc
->efi_first_u_lba
,
1126 vtoc
->efi_last_u_lba
);
1129 for (j
= 0; j
< vtoc
->efi_nparts
; j
++) {
1130 isize
= vtoc
->efi_parts
[i
].p_size
;
1131 jsize
= vtoc
->efi_parts
[j
].p_size
;
1132 istart
= vtoc
->efi_parts
[i
].p_start
;
1133 jstart
= vtoc
->efi_parts
[j
].p_start
;
1134 if ((i
!= j
) && (isize
!= 0) && (jsize
!= 0)) {
1135 endsect
= jstart
+ jsize
-1;
1136 if ((jstart
<= istart
) &&
1137 (istart
<= endsect
)) {
1139 (void) fprintf(stderr
,
1140 "label error: EFI Labels do not "
1141 "support overlapping partitions\n");
1143 (void) fprintf(stderr
,
1144 "Partition %d overlaps partition "
1151 /* make sure there is a reserved partition */
1152 if (resv_part
== -1) {
1153 (void) fprintf(stderr
,
1154 "no reserved partition found\n");
1159 * We need to get information necessary to construct a *new* efi
1163 efi_auto_sense(int fd
, struct dk_gpt
**vtoc
)
1169 * Now build the default partition table
1171 if (efi_alloc_and_init(fd
, EFI_NUMPAR
, vtoc
) != 0) {
1173 (void) fprintf(stderr
, "efi_alloc_and_init failed.\n");
1178 for (i
= 0; i
< min((*vtoc
)->efi_nparts
, V_NUMPAR
); i
++) {
1179 (*vtoc
)->efi_parts
[i
].p_tag
= default_vtoc_map
[i
].p_tag
;
1180 (*vtoc
)->efi_parts
[i
].p_flag
= default_vtoc_map
[i
].p_flag
;
1181 (*vtoc
)->efi_parts
[i
].p_start
= 0;
1182 (*vtoc
)->efi_parts
[i
].p_size
= 0;
1185 * Make constants first
1186 * and variable partitions later
1189 /* root partition - s0 128 MB */
1190 (*vtoc
)->efi_parts
[0].p_start
= 34;
1191 (*vtoc
)->efi_parts
[0].p_size
= 262144;
1193 /* partition - s1 128 MB */
1194 (*vtoc
)->efi_parts
[1].p_start
= 262178;
1195 (*vtoc
)->efi_parts
[1].p_size
= 262144;
1197 /* partition -s2 is NOT the Backup disk */
1198 (*vtoc
)->efi_parts
[2].p_tag
= V_UNASSIGNED
;
1200 /* partition -s6 /usr partition - HOG */
1201 (*vtoc
)->efi_parts
[6].p_start
= 524322;
1202 (*vtoc
)->efi_parts
[6].p_size
= (*vtoc
)->efi_last_u_lba
- 524322
1205 /* efi reserved partition - s9 16K */
1206 (*vtoc
)->efi_parts
[8].p_start
= (*vtoc
)->efi_last_u_lba
- (1024 * 16);
1207 (*vtoc
)->efi_parts
[8].p_size
= (1024 * 16);
1208 (*vtoc
)->efi_parts
[8].p_tag
= V_RESERVED
;