2 * Copyright (c) 2012 Andrey V. Elsukov <ae@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/diskmbr.h>
33 #include <sys/disklabel.h>
34 #include <sys/endian.h>
36 #include <sys/stddef.h>
37 #include <sys/queue.h>
45 #define DEBUG(fmt, args...) printf("%s: " fmt "\n" , __func__ , ## args)
47 #define DEBUG(fmt, args...)
50 #ifdef LOADER_GPT_SUPPORT
52 static const uuid_t gpt_uuid_unused = GPT_ENT_TYPE_UNUSED;
53 static const uuid_t gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA;
54 static const uuid_t gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS;
55 static const uuid_t gpt_uuid_efi = GPT_ENT_TYPE_EFI;
56 static const uuid_t gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD;
57 static const uuid_t gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT;
58 static const uuid_t gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS;
59 static const uuid_t gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP;
60 static const uuid_t gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
61 static const uuid_t gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
65 struct ptable_entry part;
73 STAILQ_ENTRY(pentry) entry;
77 enum ptable_type type;
81 STAILQ_HEAD(, pentry) entries;
84 static struct parttypes {
85 enum partition_type type;
88 { PART_UNKNOWN, "Unknown" },
90 { PART_FREEBSD, "FreeBSD" },
91 { PART_FREEBSD_BOOT, "FreeBSD boot" },
92 { PART_FREEBSD_NANDFS, "FreeBSD nandfs" },
93 { PART_FREEBSD_UFS, "FreeBSD UFS" },
94 { PART_FREEBSD_ZFS, "FreeBSD ZFS" },
95 { PART_FREEBSD_SWAP, "FreeBSD swap" },
96 { PART_FREEBSD_VINUM, "FreeBSD vinum" },
97 { PART_LINUX, "Linux" },
98 { PART_LINUX_SWAP, "Linux swap" },
99 { PART_DOS, "DOS/Windows" },
103 parttype2str(enum partition_type type)
107 for (i = 0; i < sizeof(ptypes) / sizeof(ptypes[0]); i++)
108 if (ptypes[i].type == type)
109 return (ptypes[i].desc);
110 return (ptypes[0].desc);
113 #ifdef LOADER_GPT_SUPPORT
115 uuid_letoh(uuid_t *uuid)
118 uuid->time_low = le32toh(uuid->time_low);
119 uuid->time_mid = le16toh(uuid->time_mid);
120 uuid->time_hi_and_version = le16toh(uuid->time_hi_and_version);
123 static enum partition_type
124 gpt_parttype(uuid_t type)
127 if (uuid_equal(&type, &gpt_uuid_efi, NULL))
129 else if (uuid_equal(&type, &gpt_uuid_ms_basic_data, NULL))
131 else if (uuid_equal(&type, &gpt_uuid_freebsd_boot, NULL))
132 return (PART_FREEBSD_BOOT);
133 else if (uuid_equal(&type, &gpt_uuid_freebsd_ufs, NULL))
134 return (PART_FREEBSD_UFS);
135 else if (uuid_equal(&type, &gpt_uuid_freebsd_zfs, NULL))
136 return (PART_FREEBSD_ZFS);
137 else if (uuid_equal(&type, &gpt_uuid_freebsd_swap, NULL))
138 return (PART_FREEBSD_SWAP);
139 else if (uuid_equal(&type, &gpt_uuid_freebsd_vinum, NULL))
140 return (PART_FREEBSD_VINUM);
141 else if (uuid_equal(&type, &gpt_uuid_freebsd_nandfs, NULL))
142 return (PART_FREEBSD_NANDFS);
143 else if (uuid_equal(&type, &gpt_uuid_freebsd, NULL))
144 return (PART_FREEBSD);
145 return (PART_UNKNOWN);
148 static struct gpt_hdr*
149 gpt_checkhdr(struct gpt_hdr *hdr, uint64_t lba_self, uint64_t lba_last,
154 if (memcmp(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig)) != 0) {
155 DEBUG("no GPT signature");
158 sz = le32toh(hdr->hdr_size);
159 if (sz < 92 || sz > sectorsize) {
160 DEBUG("invalid GPT header size: %d", sz);
163 crc = le32toh(hdr->hdr_crc_self);
164 hdr->hdr_crc_self = 0;
165 if (crc32(hdr, sz) != crc) {
166 DEBUG("GPT header's CRC doesn't match");
169 hdr->hdr_crc_self = crc;
170 hdr->hdr_revision = le32toh(hdr->hdr_revision);
171 if (hdr->hdr_revision < GPT_HDR_REVISION) {
172 DEBUG("unsupported GPT revision %d", hdr->hdr_revision);
175 hdr->hdr_lba_self = le64toh(hdr->hdr_lba_self);
176 if (hdr->hdr_lba_self != lba_self) {
177 DEBUG("self LBA doesn't match");
180 hdr->hdr_lba_alt = le64toh(hdr->hdr_lba_alt);
181 if (hdr->hdr_lba_alt == hdr->hdr_lba_self) {
182 DEBUG("invalid alternate LBA");
185 hdr->hdr_entries = le32toh(hdr->hdr_entries);
186 hdr->hdr_entsz = le32toh(hdr->hdr_entsz);
187 if (hdr->hdr_entries == 0 ||
188 hdr->hdr_entsz < sizeof(struct gpt_ent) ||
189 sectorsize % hdr->hdr_entsz != 0) {
190 DEBUG("invalid entry size or number of entries");
193 hdr->hdr_lba_start = le64toh(hdr->hdr_lba_start);
194 hdr->hdr_lba_end = le64toh(hdr->hdr_lba_end);
195 hdr->hdr_lba_table = le64toh(hdr->hdr_lba_table);
196 hdr->hdr_crc_table = le32toh(hdr->hdr_crc_table);
197 uuid_letoh(&hdr->hdr_uuid);
202 gpt_checktbl(const struct gpt_hdr *hdr, u_char *tbl, size_t size,
208 cnt = size / hdr->hdr_entsz;
209 if (hdr->hdr_entries <= cnt) {
210 cnt = hdr->hdr_entries;
211 /* Check CRC only when buffer size is enough for table. */
212 if (hdr->hdr_crc_table !=
213 crc32(tbl, hdr->hdr_entries * hdr->hdr_entsz)) {
214 DEBUG("GPT table's CRC doesn't match");
218 for (i = 0; i < cnt; i++) {
219 ent = (struct gpt_ent *)(tbl + i * hdr->hdr_entsz);
220 uuid_letoh(&ent->ent_type);
221 if (uuid_equal(&ent->ent_type, &gpt_uuid_unused, NULL))
223 ent->ent_lba_start = le64toh(ent->ent_lba_start);
224 ent->ent_lba_end = le64toh(ent->ent_lba_end);
229 static struct ptable*
230 ptable_gptread(struct ptable *table, void *dev, diskread_t dread)
232 struct pentry *entry;
233 struct gpt_hdr *phdr, hdr;
240 buf = malloc(table->sectorsize);
243 tbl = malloc(table->sectorsize * MAXTBLSZ);
248 /* Read the primary GPT header. */
249 if (dread(dev, buf, 1, 1) != 0) {
255 /* Check the primary GPT header. */
256 phdr = gpt_checkhdr((struct gpt_hdr *)buf, 1, table->sectors - 1,
259 /* Read the primary GPT table. */
260 size = MIN(MAXTBLSZ, (phdr->hdr_entries * phdr->hdr_entsz +
261 table->sectorsize - 1) / table->sectorsize);
262 if (dread(dev, tbl, size, phdr->hdr_lba_table) == 0 &&
263 gpt_checktbl(phdr, tbl, size * table->sectorsize,
264 table->sectors - 1) == 0) {
265 memcpy(&hdr, phdr, sizeof(hdr));
269 offset = pri ? hdr.hdr_lba_alt: table->sectors - 1;
270 /* Read the backup GPT header. */
271 if (dread(dev, buf, 1, offset) != 0)
274 phdr = gpt_checkhdr((struct gpt_hdr *)buf, offset,
275 table->sectors - 1, table->sectorsize);
278 * Compare primary and backup headers.
279 * If they are equal, then we do not need to read backup
280 * table. If they are different, then prefer backup header
281 * and try to read backup table.
284 uuid_equal(&hdr.hdr_uuid, &phdr->hdr_uuid, NULL) == 0 ||
285 hdr.hdr_revision != phdr->hdr_revision ||
286 hdr.hdr_size != phdr->hdr_size ||
287 hdr.hdr_lba_start != phdr->hdr_lba_start ||
288 hdr.hdr_lba_end != phdr->hdr_lba_end ||
289 hdr.hdr_entries != phdr->hdr_entries ||
290 hdr.hdr_entsz != phdr->hdr_entsz ||
291 hdr.hdr_crc_table != phdr->hdr_crc_table) {
292 /* Read the backup GPT table. */
293 size = MIN(MAXTBLSZ, (phdr->hdr_entries *
294 phdr->hdr_entsz + table->sectorsize - 1) /
296 if (dread(dev, tbl, size, phdr->hdr_lba_table) == 0 &&
297 gpt_checktbl(phdr, tbl, size * table->sectorsize,
298 table->sectors - 1) == 0) {
299 memcpy(&hdr, phdr, sizeof(hdr));
304 if (pri == 0 && sec == 0) {
305 /* Both primary and backup tables are invalid. */
306 table->type = PTABLE_NONE;
309 DEBUG("GPT detected");
310 size = MIN(hdr.hdr_entries * hdr.hdr_entsz,
311 MAXTBLSZ * table->sectorsize);
312 for (i = 0; i < size / hdr.hdr_entsz; i++) {
313 ent = (struct gpt_ent *)(tbl + i * hdr.hdr_entsz);
314 if (uuid_equal(&ent->ent_type, &gpt_uuid_unused, NULL))
316 entry = malloc(sizeof(*entry));
319 entry->part.start = ent->ent_lba_start;
320 entry->part.end = ent->ent_lba_end;
321 entry->part.index = i + 1;
322 entry->part.type = gpt_parttype(ent->ent_type);
323 entry->flags = le64toh(ent->ent_attr);
324 memcpy(&entry->type.gpt, &ent->ent_type, sizeof(uuid_t));
325 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
326 DEBUG("new GPT partition added");
333 #endif /* LOADER_GPT_SUPPORT */
335 #ifdef LOADER_MBR_SUPPORT
336 /* We do not need to support too many EBR partitions in the loader */
337 #define MAXEBRENTRIES 8
338 static enum partition_type
339 mbr_parttype(uint8_t type)
344 return (PART_FREEBSD);
346 return (PART_LINUX_SWAP);
358 return (PART_UNKNOWN);
361 static struct ptable*
362 ptable_ebrread(struct ptable *table, void *dev, diskread_t dread)
364 struct dos_partition *dp;
365 struct pentry *e1, *entry;
366 uint32_t start, end, offset;
370 STAILQ_FOREACH(e1, &table->entries, entry) {
371 if (e1->type.mbr == DOSPTYP_EXT ||
372 e1->type.mbr == DOSPTYP_EXTLBA)
378 offset = e1->part.start;
379 buf = malloc(table->sectorsize);
382 for (i = 0; i < MAXEBRENTRIES; i++) {
383 #if 0 /* Some BIOSes return an incorrect number of sectors */
384 if (offset >= table->sectors)
387 if (dread(dev, buf, 1, offset) != 0)
389 dp = (struct dos_partition *)(buf + DOSPARTOFF);
390 if (dp[0].dp_typ == 0)
392 start = le32toh(dp[0].dp_start);
393 if (dp[0].dp_typ == DOSPTYP_EXT &&
395 offset = e1->part.start + start;
398 end = le32toh(dp[0].dp_size);
399 entry = malloc(sizeof(*entry));
402 entry->part.start = offset + start;
403 entry->part.end = entry->part.start + end - 1;
404 entry->part.index = index++;
405 entry->part.type = mbr_parttype(dp[0].dp_typ);
406 entry->flags = dp[0].dp_flag;
407 entry->type.mbr = dp[0].dp_typ;
408 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
409 DEBUG("new EBR partition added");
410 if (dp[1].dp_typ == 0)
412 offset = e1->part.start + le32toh(dp[1].dp_start);
417 #endif /* LOADER_MBR_SUPPORT */
419 static enum partition_type
420 bsd_parttype(uint8_t type)
425 return (PART_FREEBSD_NANDFS);
427 return (PART_FREEBSD_SWAP);
429 return (PART_FREEBSD_UFS);
431 return (PART_FREEBSD_VINUM);
433 return (PART_FREEBSD_ZFS);
435 return (PART_UNKNOWN);
438 static struct ptable*
439 ptable_bsdread(struct ptable *table, void *dev, diskread_t dread)
441 struct disklabel *dl;
442 struct partition *part;
443 struct pentry *entry;
448 if (table->sectorsize < sizeof(struct disklabel)) {
449 DEBUG("Too small sectorsize");
452 buf = malloc(table->sectorsize);
455 if (dread(dev, buf, 1, 1) != 0) {
456 DEBUG("read failed");
461 dl = (struct disklabel *)buf;
462 if (le32toh(dl->d_magic) != DISKMAGIC &&
463 le32toh(dl->d_magic2) != DISKMAGIC)
465 if (le32toh(dl->d_secsize) != table->sectorsize) {
466 DEBUG("unsupported sector size");
469 dl->d_npartitions = le16toh(dl->d_npartitions);
470 if (dl->d_npartitions > 20 || dl->d_npartitions < 8) {
471 DEBUG("invalid number of partitions");
474 part = &dl->d_partitions[0];
475 raw_offset = le32toh(part[RAW_PART].p_offset);
476 for (i = 0; i < dl->d_npartitions; i++, part++) {
479 if (part->p_size == 0)
481 entry = malloc(sizeof(*entry));
484 entry->part.start = le32toh(part->p_offset) - raw_offset;
485 entry->part.end = entry->part.start +
486 le32toh(part->p_size) + 1;
487 entry->part.type = bsd_parttype(part->p_fstype);
488 entry->part.index = i; /* starts from zero */
489 entry->type.bsd = part->p_fstype;
490 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
491 DEBUG("new BSD partition added");
493 table->type = PTABLE_BSD;
499 #ifdef LOADER_VTOC8_SUPPORT
500 static enum partition_type
501 vtoc8_parttype(uint16_t type)
505 case VTOC_TAG_FREEBSD_NANDFS:
506 return (PART_FREEBSD_NANDFS);
507 case VTOC_TAG_FREEBSD_SWAP:
508 return (PART_FREEBSD_SWAP);
509 case VTOC_TAG_FREEBSD_UFS:
510 return (PART_FREEBSD_UFS);
511 case VTOC_TAG_FREEBSD_VINUM:
512 return (PART_FREEBSD_VINUM);
513 case VTOC_TAG_FREEBSD_ZFS:
514 return (PART_FREEBSD_ZFS);
516 return (PART_UNKNOWN);
519 static struct ptable*
520 ptable_vtoc8read(struct ptable *table, void *dev, diskread_t dread)
522 struct pentry *entry;
525 uint16_t sum, heads, sectors;
528 if (table->sectorsize != sizeof(struct vtoc8))
530 buf = malloc(table->sectorsize);
533 if (dread(dev, buf, 1, 0) != 0) {
534 DEBUG("read failed");
539 dl = (struct vtoc8 *)buf;
541 for (i = sum = 0; i < sizeof(struct vtoc8); i += sizeof(sum))
542 sum ^= be16dec(buf + i);
544 DEBUG("incorrect checksum");
547 if (be16toh(dl->nparts) != VTOC8_NPARTS) {
548 DEBUG("invalid number of entries");
551 sectors = be16toh(dl->nsecs);
552 heads = be16toh(dl->nheads);
553 if (sectors * heads == 0) {
554 DEBUG("invalid geometry");
557 for (i = 0; i < VTOC8_NPARTS; i++) {
558 dl->part[i].tag = be16toh(dl->part[i].tag);
559 if (i == VTOC_RAW_PART ||
560 dl->part[i].tag == VTOC_TAG_UNASSIGNED)
562 entry = malloc(sizeof(*entry));
565 entry->part.start = be32toh(dl->map[i].cyl) * heads * sectors;
566 entry->part.end = be32toh(dl->map[i].nblks) +
567 entry->part.start - 1;
568 entry->part.type = vtoc8_parttype(dl->part[i].tag);
569 entry->part.index = i; /* starts from zero */
570 entry->type.vtoc8 = dl->part[i].tag;
571 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
572 DEBUG("new VTOC8 partition added");
574 table->type = PTABLE_VTOC8;
580 #endif /* LOADER_VTOC8_SUPPORT */
583 ptable_open(void *dev, off_t sectors, uint16_t sectorsize,
586 struct dos_partition *dp;
587 struct ptable *table;
590 #ifdef LOADER_MBR_SUPPORT
591 struct pentry *entry;
596 buf = malloc(sectorsize);
599 /* First, read the MBR. */
600 if (dread(dev, buf, 1, DOSBBSECTOR) != 0) {
601 DEBUG("read failed");
605 table = malloc(sizeof(*table));
608 table->sectors = sectors;
609 table->sectorsize = sectorsize;
610 table->type = PTABLE_NONE;
611 STAILQ_INIT(&table->entries);
613 #ifdef LOADER_VTOC8_SUPPORT
614 if (be16dec(buf + offsetof(struct vtoc8, magic)) == VTOC_MAGIC) {
615 if (ptable_vtoc8read(table, dev, dread) == NULL) {
619 } else if (table->type == PTABLE_VTOC8)
623 /* Check the BSD label. */
624 if (ptable_bsdread(table, dev, dread) == NULL) { /* Read error. */
627 } else if (table->type == PTABLE_BSD)
630 #if defined(LOADER_GPT_SUPPORT) || defined(LOADER_MBR_SUPPORT)
631 /* Check the MBR magic. */
632 if (buf[DOSMAGICOFFSET] != 0x55 ||
633 buf[DOSMAGICOFFSET + 1] != 0xaa) {
634 DEBUG("magic sequence not found");
635 #if defined(LOADER_GPT_SUPPORT)
636 /* There is no PMBR, check that we have backup GPT */
637 table->type = PTABLE_GPT;
638 table = ptable_gptread(table, dev, dread);
642 /* Check that we have PMBR. Also do some validation. */
643 dp = (struct dos_partition *)(buf + DOSPARTOFF);
644 for (i = 0, count = 0; i < NDOSPART; i++) {
645 if (dp[i].dp_flag != 0 && dp[i].dp_flag != 0x80) {
646 DEBUG("invalid partition flag %x", dp[i].dp_flag);
649 #ifdef LOADER_GPT_SUPPORT
650 if (dp[i].dp_typ == DOSPTYP_PMBR) {
651 table->type = PTABLE_GPT;
652 DEBUG("PMBR detected");
655 if (dp[i].dp_typ != 0)
658 /* Do we have some invalid values? */
659 if (table->type == PTABLE_GPT && count > 1) {
660 if (dp[1].dp_typ != DOSPTYP_HFS) {
661 table->type = PTABLE_NONE;
662 DEBUG("Incorrect PMBR, ignore it");
664 DEBUG("Bootcamp detected");
667 #ifdef LOADER_GPT_SUPPORT
668 if (table->type == PTABLE_GPT) {
669 table = ptable_gptread(table, dev, dread);
673 #ifdef LOADER_MBR_SUPPORT
675 table->type = PTABLE_MBR;
676 for (i = has_ext = 0; i < NDOSPART; i++) {
677 if (dp[i].dp_typ == 0)
679 start = le32dec(&(dp[i].dp_start));
680 end = le32dec(&(dp[i].dp_size));
681 if (start == 0 || end == 0)
683 #if 0 /* Some BIOSes return an incorrect number of sectors */
684 if (start + end - 1 >= sectors)
685 continue; /* XXX: ignore */
687 if (dp[i].dp_typ == DOSPTYP_EXT ||
688 dp[i].dp_typ == DOSPTYP_EXTLBA)
690 entry = malloc(sizeof(*entry));
693 entry->part.start = start;
694 entry->part.end = start + end - 1;
695 entry->part.index = i + 1;
696 entry->part.type = mbr_parttype(dp[i].dp_typ);
697 entry->flags = dp[i].dp_flag;
698 entry->type.mbr = dp[i].dp_typ;
699 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
700 DEBUG("new MBR partition added");
703 table = ptable_ebrread(table, dev, dread);
706 #endif /* LOADER_MBR_SUPPORT */
707 #endif /* LOADER_MBR_SUPPORT || LOADER_GPT_SUPPORT */
714 ptable_close(struct ptable *table)
716 struct pentry *entry;
718 while (!STAILQ_EMPTY(&table->entries)) {
719 entry = STAILQ_FIRST(&table->entries);
720 STAILQ_REMOVE_HEAD(&table->entries, entry);
727 ptable_gettype(const struct ptable *table)
730 return (table->type);
734 ptable_getpart(const struct ptable *table, struct ptable_entry *part, int index)
736 struct pentry *entry;
738 if (part == NULL || table == NULL)
741 STAILQ_FOREACH(entry, &table->entries, entry) {
742 if (entry->part.index != index)
744 memcpy(part, &entry->part, sizeof(*part));
751 * Search for a slice with the following preferences:
753 * 1: Active FreeBSD slice
754 * 2: Non-active FreeBSD slice
755 * 3: Active Linux slice
756 * 4: non-active Linux slice
757 * 5: Active FAT/FAT32 slice
758 * 6: non-active FAT/FAT32 slice
760 #define PREF_RAWDISK 0
761 #define PREF_FBSD_ACT 1
763 #define PREF_LINUX_ACT 3
765 #define PREF_DOS_ACT 5
769 ptable_getbestpart(const struct ptable *table, struct ptable_entry *part)
771 struct pentry *entry, *best;
774 if (part == NULL || table == NULL)
778 preflevel = pref = PREF_NONE;
779 STAILQ_FOREACH(entry, &table->entries, entry) {
780 #ifdef LOADER_MBR_SUPPORT
781 if (table->type == PTABLE_MBR) {
782 switch (entry->type.mbr) {
784 pref = entry->flags & 0x80 ? PREF_FBSD_ACT:
788 pref = entry->flags & 0x80 ? PREF_LINUX_ACT:
791 case 0x01: /* DOS/Windows */
797 pref = entry->flags & 0x80 ? PREF_DOS_ACT:
804 #endif /* LOADER_MBR_SUPPORT */
805 #ifdef LOADER_GPT_SUPPORT
806 if (table->type == PTABLE_GPT) {
807 if (entry->part.type == PART_DOS)
809 else if (entry->part.type == PART_FREEBSD_UFS ||
810 entry->part.type == PART_FREEBSD_ZFS)
815 #endif /* LOADER_GPT_SUPPORT */
816 if (pref < preflevel) {
822 memcpy(part, &best->part, sizeof(*part));
829 ptable_iterate(const struct ptable *table, void *arg, ptable_iterate_t *iter)
831 struct pentry *entry;
835 STAILQ_FOREACH(entry, &table->entries, entry) {
836 #ifdef LOADER_MBR_SUPPORT
837 if (table->type == PTABLE_MBR)
838 sprintf(name, "s%d", entry->part.index);
841 #ifdef LOADER_GPT_SUPPORT
842 if (table->type == PTABLE_GPT)
843 sprintf(name, "p%d", entry->part.index);
846 #ifdef LOADER_VTOC8_SUPPORT
847 if (table->type == PTABLE_VTOC8)
848 sprintf(name, "%c", (u_char) 'a' +
852 if (table->type == PTABLE_BSD)
853 sprintf(name, "%c", (u_char) 'a' +
855 iter(arg, name, &entry->part);