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 < nitems(ptypes); 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. */
261 howmany(phdr->hdr_entries * phdr->hdr_entsz,
263 if (dread(dev, tbl, size, phdr->hdr_lba_table) == 0 &&
264 gpt_checktbl(phdr, tbl, size * table->sectorsize,
265 table->sectors - 1) == 0) {
266 memcpy(&hdr, phdr, sizeof(hdr));
270 offset = pri ? hdr.hdr_lba_alt: table->sectors - 1;
271 /* Read the backup GPT header. */
272 if (dread(dev, buf, 1, offset) != 0)
275 phdr = gpt_checkhdr((struct gpt_hdr *)buf, offset,
276 table->sectors - 1, table->sectorsize);
279 * Compare primary and backup headers.
280 * If they are equal, then we do not need to read backup
281 * table. If they are different, then prefer backup header
282 * and try to read backup table.
285 uuid_equal(&hdr.hdr_uuid, &phdr->hdr_uuid, NULL) == 0 ||
286 hdr.hdr_revision != phdr->hdr_revision ||
287 hdr.hdr_size != phdr->hdr_size ||
288 hdr.hdr_lba_start != phdr->hdr_lba_start ||
289 hdr.hdr_lba_end != phdr->hdr_lba_end ||
290 hdr.hdr_entries != phdr->hdr_entries ||
291 hdr.hdr_entsz != phdr->hdr_entsz ||
292 hdr.hdr_crc_table != phdr->hdr_crc_table) {
293 /* Read the backup GPT table. */
295 howmany(phdr->hdr_entries * phdr->hdr_entsz,
297 if (dread(dev, tbl, size, phdr->hdr_lba_table) == 0 &&
298 gpt_checktbl(phdr, tbl, size * table->sectorsize,
299 table->sectors - 1) == 0) {
300 memcpy(&hdr, phdr, sizeof(hdr));
305 if (pri == 0 && sec == 0) {
306 /* Both primary and backup tables are invalid. */
307 table->type = PTABLE_NONE;
310 DEBUG("GPT detected");
311 size = MIN(hdr.hdr_entries * hdr.hdr_entsz,
312 MAXTBLSZ * table->sectorsize);
313 for (i = 0; i < size / hdr.hdr_entsz; i++) {
314 ent = (struct gpt_ent *)(tbl + i * hdr.hdr_entsz);
315 if (uuid_equal(&ent->ent_type, &gpt_uuid_unused, NULL))
317 entry = malloc(sizeof(*entry));
320 entry->part.start = ent->ent_lba_start;
321 entry->part.end = ent->ent_lba_end;
322 entry->part.index = i + 1;
323 entry->part.type = gpt_parttype(ent->ent_type);
324 entry->flags = le64toh(ent->ent_attr);
325 memcpy(&entry->type.gpt, &ent->ent_type, sizeof(uuid_t));
326 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
327 DEBUG("new GPT partition added");
334 #endif /* LOADER_GPT_SUPPORT */
336 #ifdef LOADER_MBR_SUPPORT
337 /* We do not need to support too many EBR partitions in the loader */
338 #define MAXEBRENTRIES 8
339 static enum partition_type
340 mbr_parttype(uint8_t type)
345 return (PART_FREEBSD);
347 return (PART_LINUX_SWAP);
359 return (PART_UNKNOWN);
362 static struct ptable*
363 ptable_ebrread(struct ptable *table, void *dev, diskread_t dread)
365 struct dos_partition *dp;
366 struct pentry *e1, *entry;
367 uint32_t start, end, offset;
371 STAILQ_FOREACH(e1, &table->entries, entry) {
372 if (e1->type.mbr == DOSPTYP_EXT ||
373 e1->type.mbr == DOSPTYP_EXTLBA)
379 offset = e1->part.start;
380 buf = malloc(table->sectorsize);
383 DEBUG("EBR detected");
384 for (i = 0; i < MAXEBRENTRIES; i++) {
385 #if 0 /* Some BIOSes return an incorrect number of sectors */
386 if (offset >= table->sectors)
389 if (dread(dev, buf, 1, offset) != 0)
391 dp = (struct dos_partition *)(buf + DOSPARTOFF);
392 if (dp[0].dp_typ == 0)
394 start = le32toh(dp[0].dp_start);
395 if (dp[0].dp_typ == DOSPTYP_EXT &&
397 offset = e1->part.start + start;
400 end = le32toh(dp[0].dp_size);
401 entry = malloc(sizeof(*entry));
404 entry->part.start = offset + start;
405 entry->part.end = entry->part.start + end - 1;
406 entry->part.index = index++;
407 entry->part.type = mbr_parttype(dp[0].dp_typ);
408 entry->flags = dp[0].dp_flag;
409 entry->type.mbr = dp[0].dp_typ;
410 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
411 DEBUG("new EBR partition added");
412 if (dp[1].dp_typ == 0)
414 offset = e1->part.start + le32toh(dp[1].dp_start);
419 #endif /* LOADER_MBR_SUPPORT */
421 static enum partition_type
422 bsd_parttype(uint8_t type)
427 return (PART_FREEBSD_NANDFS);
429 return (PART_FREEBSD_SWAP);
431 return (PART_FREEBSD_UFS);
433 return (PART_FREEBSD_VINUM);
435 return (PART_FREEBSD_ZFS);
437 return (PART_UNKNOWN);
440 static struct ptable*
441 ptable_bsdread(struct ptable *table, void *dev, diskread_t dread)
443 struct disklabel *dl;
444 struct partition *part;
445 struct pentry *entry;
450 if (table->sectorsize < sizeof(struct disklabel)) {
451 DEBUG("Too small sectorsize");
454 buf = malloc(table->sectorsize);
457 if (dread(dev, buf, 1, 1) != 0) {
458 DEBUG("read failed");
463 dl = (struct disklabel *)buf;
464 if (le32toh(dl->d_magic) != DISKMAGIC &&
465 le32toh(dl->d_magic2) != DISKMAGIC)
467 if (le32toh(dl->d_secsize) != table->sectorsize) {
468 DEBUG("unsupported sector size");
471 dl->d_npartitions = le16toh(dl->d_npartitions);
472 if (dl->d_npartitions > 20 || dl->d_npartitions < 8) {
473 DEBUG("invalid number of partitions");
476 DEBUG("BSD detected");
477 part = &dl->d_partitions[0];
478 raw_offset = le32toh(part[RAW_PART].p_offset);
479 for (i = 0; i < dl->d_npartitions; i++, part++) {
482 if (part->p_size == 0)
484 entry = malloc(sizeof(*entry));
487 entry->part.start = le32toh(part->p_offset) - raw_offset;
488 entry->part.end = entry->part.start +
489 le32toh(part->p_size) + 1;
490 entry->part.type = bsd_parttype(part->p_fstype);
491 entry->part.index = i; /* starts from zero */
492 entry->type.bsd = part->p_fstype;
493 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
494 DEBUG("new BSD partition added");
496 table->type = PTABLE_BSD;
502 #ifdef LOADER_VTOC8_SUPPORT
503 static enum partition_type
504 vtoc8_parttype(uint16_t type)
508 case VTOC_TAG_FREEBSD_NANDFS:
509 return (PART_FREEBSD_NANDFS);
510 case VTOC_TAG_FREEBSD_SWAP:
511 return (PART_FREEBSD_SWAP);
512 case VTOC_TAG_FREEBSD_UFS:
513 return (PART_FREEBSD_UFS);
514 case VTOC_TAG_FREEBSD_VINUM:
515 return (PART_FREEBSD_VINUM);
516 case VTOC_TAG_FREEBSD_ZFS:
517 return (PART_FREEBSD_ZFS);
519 return (PART_UNKNOWN);
522 static struct ptable*
523 ptable_vtoc8read(struct ptable *table, void *dev, diskread_t dread)
525 struct pentry *entry;
528 uint16_t sum, heads, sectors;
531 if (table->sectorsize != sizeof(struct vtoc8))
533 buf = malloc(table->sectorsize);
536 if (dread(dev, buf, 1, 0) != 0) {
537 DEBUG("read failed");
542 dl = (struct vtoc8 *)buf;
544 for (i = sum = 0; i < sizeof(struct vtoc8); i += sizeof(sum))
545 sum ^= be16dec(buf + i);
547 DEBUG("incorrect checksum");
550 if (be16toh(dl->nparts) != VTOC8_NPARTS) {
551 DEBUG("invalid number of entries");
554 sectors = be16toh(dl->nsecs);
555 heads = be16toh(dl->nheads);
556 if (sectors * heads == 0) {
557 DEBUG("invalid geometry");
560 DEBUG("VTOC8 detected");
561 for (i = 0; i < VTOC8_NPARTS; i++) {
562 dl->part[i].tag = be16toh(dl->part[i].tag);
563 if (i == VTOC_RAW_PART ||
564 dl->part[i].tag == VTOC_TAG_UNASSIGNED)
566 entry = malloc(sizeof(*entry));
569 entry->part.start = be32toh(dl->map[i].cyl) * heads * sectors;
570 entry->part.end = be32toh(dl->map[i].nblks) +
571 entry->part.start - 1;
572 entry->part.type = vtoc8_parttype(dl->part[i].tag);
573 entry->part.index = i; /* starts from zero */
574 entry->type.vtoc8 = dl->part[i].tag;
575 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
576 DEBUG("new VTOC8 partition added");
578 table->type = PTABLE_VTOC8;
584 #endif /* LOADER_VTOC8_SUPPORT */
587 ptable_open(void *dev, off_t sectors, uint16_t sectorsize,
590 struct dos_partition *dp;
591 struct ptable *table;
594 #ifdef LOADER_MBR_SUPPORT
595 struct pentry *entry;
600 buf = malloc(sectorsize);
603 /* First, read the MBR. */
604 if (dread(dev, buf, 1, DOSBBSECTOR) != 0) {
605 DEBUG("read failed");
609 table = malloc(sizeof(*table));
612 table->sectors = sectors;
613 table->sectorsize = sectorsize;
614 table->type = PTABLE_NONE;
615 STAILQ_INIT(&table->entries);
617 #ifdef LOADER_VTOC8_SUPPORT
618 if (be16dec(buf + offsetof(struct vtoc8, magic)) == VTOC_MAGIC) {
619 if (ptable_vtoc8read(table, dev, dread) == NULL) {
623 } else if (table->type == PTABLE_VTOC8)
627 /* Check the BSD label. */
628 if (ptable_bsdread(table, dev, dread) == NULL) { /* Read error. */
631 } else if (table->type == PTABLE_BSD)
634 #if defined(LOADER_GPT_SUPPORT) || defined(LOADER_MBR_SUPPORT)
635 /* Check the MBR magic. */
636 if (buf[DOSMAGICOFFSET] != 0x55 ||
637 buf[DOSMAGICOFFSET + 1] != 0xaa) {
638 DEBUG("magic sequence not found");
639 #if defined(LOADER_GPT_SUPPORT)
640 /* There is no PMBR, check that we have backup GPT */
641 table->type = PTABLE_GPT;
642 table = ptable_gptread(table, dev, dread);
646 /* Check that we have PMBR. Also do some validation. */
647 dp = (struct dos_partition *)(buf + DOSPARTOFF);
648 for (i = 0, count = 0; i < NDOSPART; i++) {
649 if (dp[i].dp_flag != 0 && dp[i].dp_flag != 0x80) {
650 DEBUG("invalid partition flag %x", dp[i].dp_flag);
653 #ifdef LOADER_GPT_SUPPORT
654 if (dp[i].dp_typ == DOSPTYP_PMBR) {
655 table->type = PTABLE_GPT;
656 DEBUG("PMBR detected");
659 if (dp[i].dp_typ != 0)
662 /* Do we have some invalid values? */
663 if (table->type == PTABLE_GPT && count > 1) {
664 if (dp[1].dp_typ != DOSPTYP_HFS) {
665 table->type = PTABLE_NONE;
666 DEBUG("Incorrect PMBR, ignore it");
668 DEBUG("Bootcamp detected");
670 #ifdef LOADER_GPT_SUPPORT
671 if (table->type == PTABLE_GPT) {
672 table = ptable_gptread(table, dev, dread);
676 #ifdef LOADER_MBR_SUPPORT
678 DEBUG("MBR detected");
679 table->type = PTABLE_MBR;
680 for (i = has_ext = 0; i < NDOSPART; i++) {
681 if (dp[i].dp_typ == 0)
683 start = le32dec(&(dp[i].dp_start));
684 end = le32dec(&(dp[i].dp_size));
685 if (start == 0 || end == 0)
687 #if 0 /* Some BIOSes return an incorrect number of sectors */
688 if (start + end - 1 >= sectors)
689 continue; /* XXX: ignore */
691 if (dp[i].dp_typ == DOSPTYP_EXT ||
692 dp[i].dp_typ == DOSPTYP_EXTLBA)
694 entry = malloc(sizeof(*entry));
697 entry->part.start = start;
698 entry->part.end = start + end - 1;
699 entry->part.index = i + 1;
700 entry->part.type = mbr_parttype(dp[i].dp_typ);
701 entry->flags = dp[i].dp_flag;
702 entry->type.mbr = dp[i].dp_typ;
703 STAILQ_INSERT_TAIL(&table->entries, entry, entry);
704 DEBUG("new MBR partition added");
707 table = ptable_ebrread(table, dev, dread);
710 #endif /* LOADER_MBR_SUPPORT */
711 #endif /* LOADER_MBR_SUPPORT || LOADER_GPT_SUPPORT */
718 ptable_close(struct ptable *table)
720 struct pentry *entry;
722 while (!STAILQ_EMPTY(&table->entries)) {
723 entry = STAILQ_FIRST(&table->entries);
724 STAILQ_REMOVE_HEAD(&table->entries, entry);
731 ptable_gettype(const struct ptable *table)
734 return (table->type);
738 ptable_getpart(const struct ptable *table, struct ptable_entry *part, int index)
740 struct pentry *entry;
742 if (part == NULL || table == NULL)
745 STAILQ_FOREACH(entry, &table->entries, entry) {
746 if (entry->part.index != index)
748 memcpy(part, &entry->part, sizeof(*part));
755 * Search for a slice with the following preferences:
757 * 1: Active FreeBSD slice
758 * 2: Non-active FreeBSD slice
759 * 3: Active Linux slice
760 * 4: non-active Linux slice
761 * 5: Active FAT/FAT32 slice
762 * 6: non-active FAT/FAT32 slice
764 #define PREF_RAWDISK 0
765 #define PREF_FBSD_ACT 1
767 #define PREF_LINUX_ACT 3
769 #define PREF_DOS_ACT 5
773 ptable_getbestpart(const struct ptable *table, struct ptable_entry *part)
775 struct pentry *entry, *best;
778 if (part == NULL || table == NULL)
782 preflevel = pref = PREF_NONE;
783 STAILQ_FOREACH(entry, &table->entries, entry) {
784 #ifdef LOADER_MBR_SUPPORT
785 if (table->type == PTABLE_MBR) {
786 switch (entry->type.mbr) {
788 pref = entry->flags & 0x80 ? PREF_FBSD_ACT:
792 pref = entry->flags & 0x80 ? PREF_LINUX_ACT:
795 case 0x01: /* DOS/Windows */
801 pref = entry->flags & 0x80 ? PREF_DOS_ACT:
808 #endif /* LOADER_MBR_SUPPORT */
809 #ifdef LOADER_GPT_SUPPORT
810 if (table->type == PTABLE_GPT) {
811 if (entry->part.type == PART_DOS)
813 else if (entry->part.type == PART_FREEBSD_UFS ||
814 entry->part.type == PART_FREEBSD_ZFS)
819 #endif /* LOADER_GPT_SUPPORT */
820 if (pref < preflevel) {
826 memcpy(part, &best->part, sizeof(*part));
833 ptable_iterate(const struct ptable *table, void *arg, ptable_iterate_t *iter)
835 struct pentry *entry;
839 STAILQ_FOREACH(entry, &table->entries, entry) {
840 #ifdef LOADER_MBR_SUPPORT
841 if (table->type == PTABLE_MBR)
842 sprintf(name, "s%d", entry->part.index);
845 #ifdef LOADER_GPT_SUPPORT
846 if (table->type == PTABLE_GPT)
847 sprintf(name, "p%d", entry->part.index);
850 #ifdef LOADER_VTOC8_SUPPORT
851 if (table->type == PTABLE_VTOC8)
852 sprintf(name, "%c", (u_char) 'a' +
856 if (table->type == PTABLE_BSD)
857 sprintf(name, "%c", (u_char) 'a' +
859 if (iter(arg, name, &entry->part))