Index: head/sys/boot/common/part.c =================================================================== --- head/sys/boot/common/part.c (revision 322627) +++ head/sys/boot/common/part.c (revision 322628) @@ -1,898 +1,898 @@ /*- * Copyright (c) 2012 Andrey V. Elsukov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #ifdef PART_DEBUG #define DEBUG(fmt, args...) printf("%s: " fmt "\n", __func__, ## args) #else #define DEBUG(fmt, args...) #endif #ifdef LOADER_GPT_SUPPORT #define MAXTBLSZ 64 static const uuid_t gpt_uuid_unused = GPT_ENT_TYPE_UNUSED; static const uuid_t gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA; static const uuid_t gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS; static const uuid_t gpt_uuid_efi = GPT_ENT_TYPE_EFI; static const uuid_t gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD; static const uuid_t gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT; static const uuid_t gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS; static const uuid_t gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP; static const uuid_t gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS; static const uuid_t gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM; #endif struct pentry { struct ptable_entry part; uint64_t flags; union { uint8_t bsd; uint8_t mbr; uuid_t gpt; uint16_t vtoc8; } type; STAILQ_ENTRY(pentry) entry; }; struct ptable { enum ptable_type type; uint16_t sectorsize; uint64_t sectors; STAILQ_HEAD(, pentry) entries; }; static struct parttypes { enum partition_type type; const char *desc; } ptypes[] = { { PART_UNKNOWN, "Unknown" }, { PART_EFI, "EFI" }, { PART_FREEBSD, "FreeBSD" }, { PART_FREEBSD_BOOT, "FreeBSD boot" }, { PART_FREEBSD_NANDFS, "FreeBSD nandfs" }, { PART_FREEBSD_UFS, "FreeBSD UFS" }, { PART_FREEBSD_ZFS, "FreeBSD ZFS" }, { PART_FREEBSD_SWAP, "FreeBSD swap" }, { PART_FREEBSD_VINUM, "FreeBSD vinum" }, { PART_LINUX, "Linux" }, { PART_LINUX_SWAP, "Linux swap" }, { PART_DOS, "DOS/Windows" }, }; const char * parttype2str(enum partition_type type) { size_t i; for (i = 0; i < nitems(ptypes); i++) if (ptypes[i].type == type) return (ptypes[i].desc); return (ptypes[0].desc); } #ifdef LOADER_GPT_SUPPORT static void uuid_letoh(uuid_t *uuid) { uuid->time_low = le32toh(uuid->time_low); uuid->time_mid = le16toh(uuid->time_mid); uuid->time_hi_and_version = le16toh(uuid->time_hi_and_version); } static enum partition_type gpt_parttype(uuid_t type) { if (uuid_equal(&type, &gpt_uuid_efi, NULL)) return (PART_EFI); else if (uuid_equal(&type, &gpt_uuid_ms_basic_data, NULL)) return (PART_DOS); else if (uuid_equal(&type, &gpt_uuid_freebsd_boot, NULL)) return (PART_FREEBSD_BOOT); else if (uuid_equal(&type, &gpt_uuid_freebsd_ufs, NULL)) return (PART_FREEBSD_UFS); else if (uuid_equal(&type, &gpt_uuid_freebsd_zfs, NULL)) return (PART_FREEBSD_ZFS); else if (uuid_equal(&type, &gpt_uuid_freebsd_swap, NULL)) return (PART_FREEBSD_SWAP); else if (uuid_equal(&type, &gpt_uuid_freebsd_vinum, NULL)) return (PART_FREEBSD_VINUM); else if (uuid_equal(&type, &gpt_uuid_freebsd_nandfs, NULL)) return (PART_FREEBSD_NANDFS); else if (uuid_equal(&type, &gpt_uuid_freebsd, NULL)) return (PART_FREEBSD); return (PART_UNKNOWN); } static struct gpt_hdr * gpt_checkhdr(struct gpt_hdr *hdr, uint64_t lba_self, uint64_t lba_last, uint16_t sectorsize) { uint32_t sz, crc; if (memcmp(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig)) != 0) { DEBUG("no GPT signature"); return (NULL); } sz = le32toh(hdr->hdr_size); if (sz < 92 || sz > sectorsize) { DEBUG("invalid GPT header size: %d", sz); return (NULL); } crc = le32toh(hdr->hdr_crc_self); hdr->hdr_crc_self = 0; if (crc32(hdr, sz) != crc) { DEBUG("GPT header's CRC doesn't match"); return (NULL); } hdr->hdr_crc_self = crc; hdr->hdr_revision = le32toh(hdr->hdr_revision); if (hdr->hdr_revision < GPT_HDR_REVISION) { DEBUG("unsupported GPT revision %d", hdr->hdr_revision); return (NULL); } hdr->hdr_lba_self = le64toh(hdr->hdr_lba_self); if (hdr->hdr_lba_self != lba_self) { DEBUG("self LBA doesn't match"); return (NULL); } hdr->hdr_lba_alt = le64toh(hdr->hdr_lba_alt); if (hdr->hdr_lba_alt == hdr->hdr_lba_self) { DEBUG("invalid alternate LBA"); return (NULL); } hdr->hdr_entries = le32toh(hdr->hdr_entries); hdr->hdr_entsz = le32toh(hdr->hdr_entsz); if (hdr->hdr_entries == 0 || hdr->hdr_entsz < sizeof(struct gpt_ent) || sectorsize % hdr->hdr_entsz != 0) { DEBUG("invalid entry size or number of entries"); return (NULL); } hdr->hdr_lba_start = le64toh(hdr->hdr_lba_start); hdr->hdr_lba_end = le64toh(hdr->hdr_lba_end); hdr->hdr_lba_table = le64toh(hdr->hdr_lba_table); hdr->hdr_crc_table = le32toh(hdr->hdr_crc_table); uuid_letoh(&hdr->hdr_uuid); return (hdr); } static int gpt_checktbl(const struct gpt_hdr *hdr, uint8_t *tbl, size_t size, uint64_t lba_last) { struct gpt_ent *ent; uint32_t i, cnt; cnt = size / hdr->hdr_entsz; if (hdr->hdr_entries <= cnt) { cnt = hdr->hdr_entries; /* Check CRC only when buffer size is enough for table. */ if (hdr->hdr_crc_table != crc32(tbl, hdr->hdr_entries * hdr->hdr_entsz)) { DEBUG("GPT table's CRC doesn't match"); return (-1); } } for (i = 0; i < cnt; i++) { ent = (struct gpt_ent *)(tbl + i * hdr->hdr_entsz); uuid_letoh(&ent->ent_type); if (uuid_equal(&ent->ent_type, &gpt_uuid_unused, NULL)) continue; ent->ent_lba_start = le64toh(ent->ent_lba_start); ent->ent_lba_end = le64toh(ent->ent_lba_end); } return (0); } static struct ptable * ptable_gptread(struct ptable *table, void *dev, diskread_t dread) { struct pentry *entry; struct gpt_hdr *phdr, hdr; struct gpt_ent *ent; uint8_t *buf, *tbl; uint64_t offset; int pri, sec; size_t size, i; buf = malloc(table->sectorsize); if (buf == NULL) return (NULL); tbl = malloc(table->sectorsize * MAXTBLSZ); if (tbl == NULL) { free(buf); return (NULL); } /* Read the primary GPT header. */ if (dread(dev, buf, 1, 1) != 0) { ptable_close(table); table = NULL; goto out; } pri = sec = 0; /* Check the primary GPT header. */ phdr = gpt_checkhdr((struct gpt_hdr *)buf, 1, table->sectors - 1, table->sectorsize); if (phdr != NULL) { /* Read the primary GPT table. */ size = MIN(MAXTBLSZ, howmany(phdr->hdr_entries * phdr->hdr_entsz, table->sectorsize)); if (dread(dev, tbl, size, phdr->hdr_lba_table) == 0 && gpt_checktbl(phdr, tbl, size * table->sectorsize, table->sectors - 1) == 0) { memcpy(&hdr, phdr, sizeof(hdr)); pri = 1; } } offset = pri ? hdr.hdr_lba_alt: table->sectors - 1; /* Read the backup GPT header. */ if (dread(dev, buf, 1, offset) != 0) phdr = NULL; else phdr = gpt_checkhdr((struct gpt_hdr *)buf, offset, table->sectors - 1, table->sectorsize); if (phdr != NULL) { /* * Compare primary and backup headers. * If they are equal, then we do not need to read backup * table. If they are different, then prefer backup header * and try to read backup table. */ if (pri == 0 || uuid_equal(&hdr.hdr_uuid, &phdr->hdr_uuid, NULL) == 0 || hdr.hdr_revision != phdr->hdr_revision || hdr.hdr_size != phdr->hdr_size || hdr.hdr_lba_start != phdr->hdr_lba_start || hdr.hdr_lba_end != phdr->hdr_lba_end || hdr.hdr_entries != phdr->hdr_entries || hdr.hdr_entsz != phdr->hdr_entsz || hdr.hdr_crc_table != phdr->hdr_crc_table) { /* Read the backup GPT table. */ size = MIN(MAXTBLSZ, howmany(phdr->hdr_entries * phdr->hdr_entsz, table->sectorsize)); if (dread(dev, tbl, size, phdr->hdr_lba_table) == 0 && gpt_checktbl(phdr, tbl, size * table->sectorsize, table->sectors - 1) == 0) { memcpy(&hdr, phdr, sizeof(hdr)); sec = 1; } } } if (pri == 0 && sec == 0) { /* Both primary and backup tables are invalid. */ table->type = PTABLE_NONE; goto out; } DEBUG("GPT detected"); size = MIN(hdr.hdr_entries * hdr.hdr_entsz, MAXTBLSZ * table->sectorsize); /* * If the disk's sector count is smaller than the sector count recorded * in the disk's GPT table header, set the table->sectors to the value * recorded in GPT tables. This is done to work around buggy firmware * that returns truncated disk sizes. * * Note, this is still not a foolproof way to get disk's size. For * example, an image file can be truncated when copied to smaller media. */ if (hdr.hdr_lba_alt + 1 > table->sectors) table->sectors = hdr.hdr_lba_alt + 1; for (i = 0; i < size / hdr.hdr_entsz; i++) { ent = (struct gpt_ent *)(tbl + i * hdr.hdr_entsz); if (uuid_equal(&ent->ent_type, &gpt_uuid_unused, NULL)) continue; /* Simple sanity checks. */ if (ent->ent_lba_start < hdr.hdr_lba_start || ent->ent_lba_end > hdr.hdr_lba_end || ent->ent_lba_start > ent->ent_lba_end) continue; entry = malloc(sizeof(*entry)); if (entry == NULL) break; entry->part.start = ent->ent_lba_start; entry->part.end = ent->ent_lba_end; entry->part.index = i + 1; entry->part.type = gpt_parttype(ent->ent_type); entry->flags = le64toh(ent->ent_attr); memcpy(&entry->type.gpt, &ent->ent_type, sizeof(uuid_t)); STAILQ_INSERT_TAIL(&table->entries, entry, entry); DEBUG("new GPT partition added"); } out: free(buf); free(tbl); return (table); } #endif /* LOADER_GPT_SUPPORT */ #ifdef LOADER_MBR_SUPPORT /* We do not need to support too many EBR partitions in the loader */ #define MAXEBRENTRIES 8 static enum partition_type mbr_parttype(uint8_t type) { switch (type) { case DOSPTYP_386BSD: return (PART_FREEBSD); case DOSPTYP_LINSWP: return (PART_LINUX_SWAP); case DOSPTYP_LINUX: return (PART_LINUX); case 0x01: case 0x04: case 0x06: case 0x07: case 0x0b: case 0x0c: case 0x0e: return (PART_DOS); } return (PART_UNKNOWN); } static struct ptable * ptable_ebrread(struct ptable *table, void *dev, diskread_t dread) { struct dos_partition *dp; struct pentry *e1, *entry; uint32_t start, end, offset; u_char *buf; int i, index; STAILQ_FOREACH(e1, &table->entries, entry) { if (e1->type.mbr == DOSPTYP_EXT || e1->type.mbr == DOSPTYP_EXTLBA) break; } if (e1 == NULL) return (table); index = 5; offset = e1->part.start; buf = malloc(table->sectorsize); if (buf == NULL) return (table); DEBUG("EBR detected"); for (i = 0; i < MAXEBRENTRIES; i++) { #if 0 /* Some BIOSes return an incorrect number of sectors */ if (offset >= table->sectors) break; #endif if (dread(dev, buf, 1, offset) != 0) break; dp = (struct dos_partition *)(buf + DOSPARTOFF); if (dp[0].dp_typ == 0) break; start = le32toh(dp[0].dp_start); if (dp[0].dp_typ == DOSPTYP_EXT && dp[1].dp_typ == 0) { offset = e1->part.start + start; continue; } end = le32toh(dp[0].dp_size); entry = malloc(sizeof(*entry)); if (entry == NULL) break; entry->part.start = offset + start; entry->part.end = entry->part.start + end - 1; entry->part.index = index++; entry->part.type = mbr_parttype(dp[0].dp_typ); entry->flags = dp[0].dp_flag; entry->type.mbr = dp[0].dp_typ; STAILQ_INSERT_TAIL(&table->entries, entry, entry); DEBUG("new EBR partition added"); if (dp[1].dp_typ == 0) break; offset = e1->part.start + le32toh(dp[1].dp_start); } free(buf); return (table); } #endif /* LOADER_MBR_SUPPORT */ static enum partition_type bsd_parttype(uint8_t type) { switch (type) { case FS_NANDFS: return (PART_FREEBSD_NANDFS); case FS_SWAP: return (PART_FREEBSD_SWAP); case FS_BSDFFS: return (PART_FREEBSD_UFS); case FS_VINUM: return (PART_FREEBSD_VINUM); case FS_ZFS: return (PART_FREEBSD_ZFS); } return (PART_UNKNOWN); } static struct ptable * ptable_bsdread(struct ptable *table, void *dev, diskread_t dread) { struct disklabel *dl; struct partition *part; struct pentry *entry; uint8_t *buf; uint32_t raw_offset; int i; if (table->sectorsize < sizeof(struct disklabel)) { DEBUG("Too small sectorsize"); return (table); } buf = malloc(table->sectorsize); if (buf == NULL) return (table); if (dread(dev, buf, 1, 1) != 0) { DEBUG("read failed"); ptable_close(table); table = NULL; goto out; } dl = (struct disklabel *)buf; if (le32toh(dl->d_magic) != DISKMAGIC && le32toh(dl->d_magic2) != DISKMAGIC) goto out; if (le32toh(dl->d_secsize) != table->sectorsize) { DEBUG("unsupported sector size"); goto out; } dl->d_npartitions = le16toh(dl->d_npartitions); if (dl->d_npartitions > 20 || dl->d_npartitions < 8) { DEBUG("invalid number of partitions"); goto out; } DEBUG("BSD detected"); part = &dl->d_partitions[0]; raw_offset = le32toh(part[RAW_PART].p_offset); for (i = 0; i < dl->d_npartitions; i++, part++) { if (i == RAW_PART) continue; if (part->p_size == 0) continue; entry = malloc(sizeof(*entry)); if (entry == NULL) break; entry->part.start = le32toh(part->p_offset) - raw_offset; entry->part.end = entry->part.start + - le32toh(part->p_size) + 1; + le32toh(part->p_size) - 1; entry->part.type = bsd_parttype(part->p_fstype); entry->part.index = i; /* starts from zero */ entry->type.bsd = part->p_fstype; STAILQ_INSERT_TAIL(&table->entries, entry, entry); DEBUG("new BSD partition added"); } table->type = PTABLE_BSD; out: free(buf); return (table); } #ifdef LOADER_VTOC8_SUPPORT static enum partition_type vtoc8_parttype(uint16_t type) { switch (type) { case VTOC_TAG_FREEBSD_NANDFS: return (PART_FREEBSD_NANDFS); case VTOC_TAG_FREEBSD_SWAP: return (PART_FREEBSD_SWAP); case VTOC_TAG_FREEBSD_UFS: return (PART_FREEBSD_UFS); case VTOC_TAG_FREEBSD_VINUM: return (PART_FREEBSD_VINUM); case VTOC_TAG_FREEBSD_ZFS: return (PART_FREEBSD_ZFS); } return (PART_UNKNOWN); } static struct ptable * ptable_vtoc8read(struct ptable *table, void *dev, diskread_t dread) { struct pentry *entry; struct vtoc8 *dl; uint8_t *buf; uint16_t sum, heads, sectors; int i; if (table->sectorsize != sizeof(struct vtoc8)) return (table); buf = malloc(table->sectorsize); if (buf == NULL) return (table); if (dread(dev, buf, 1, 0) != 0) { DEBUG("read failed"); ptable_close(table); table = NULL; goto out; } dl = (struct vtoc8 *)buf; /* Check the sum */ for (i = sum = 0; i < sizeof(struct vtoc8); i += sizeof(sum)) sum ^= be16dec(buf + i); if (sum != 0) { DEBUG("incorrect checksum"); goto out; } if (be16toh(dl->nparts) != VTOC8_NPARTS) { DEBUG("invalid number of entries"); goto out; } sectors = be16toh(dl->nsecs); heads = be16toh(dl->nheads); if (sectors * heads == 0) { DEBUG("invalid geometry"); goto out; } DEBUG("VTOC8 detected"); for (i = 0; i < VTOC8_NPARTS; i++) { dl->part[i].tag = be16toh(dl->part[i].tag); if (i == VTOC_RAW_PART || dl->part[i].tag == VTOC_TAG_UNASSIGNED) continue; entry = malloc(sizeof(*entry)); if (entry == NULL) break; entry->part.start = be32toh(dl->map[i].cyl) * heads * sectors; entry->part.end = be32toh(dl->map[i].nblks) + entry->part.start - 1; entry->part.type = vtoc8_parttype(dl->part[i].tag); entry->part.index = i; /* starts from zero */ entry->type.vtoc8 = dl->part[i].tag; STAILQ_INSERT_TAIL(&table->entries, entry, entry); DEBUG("new VTOC8 partition added"); } table->type = PTABLE_VTOC8; out: free(buf); return (table); } #endif /* LOADER_VTOC8_SUPPORT */ struct ptable * ptable_open(void *dev, uint64_t sectors, uint16_t sectorsize, diskread_t *dread) { struct dos_partition *dp; struct ptable *table; uint8_t *buf; int i, count; #ifdef LOADER_MBR_SUPPORT struct pentry *entry; uint32_t start, end; int has_ext; #endif table = NULL; buf = malloc(sectorsize); if (buf == NULL) return (NULL); /* First, read the MBR. */ if (dread(dev, buf, 1, DOSBBSECTOR) != 0) { DEBUG("read failed"); goto out; } table = malloc(sizeof(*table)); if (table == NULL) goto out; table->sectors = sectors; table->sectorsize = sectorsize; table->type = PTABLE_NONE; STAILQ_INIT(&table->entries); #ifdef LOADER_VTOC8_SUPPORT if (be16dec(buf + offsetof(struct vtoc8, magic)) == VTOC_MAGIC) { if (ptable_vtoc8read(table, dev, dread) == NULL) { /* Read error. */ table = NULL; goto out; } else if (table->type == PTABLE_VTOC8) goto out; } #endif /* Check the BSD label. */ if (ptable_bsdread(table, dev, dread) == NULL) { /* Read error. */ table = NULL; goto out; } else if (table->type == PTABLE_BSD) goto out; #if defined(LOADER_GPT_SUPPORT) || defined(LOADER_MBR_SUPPORT) /* Check the MBR magic. */ if (buf[DOSMAGICOFFSET] != 0x55 || buf[DOSMAGICOFFSET + 1] != 0xaa) { DEBUG("magic sequence not found"); #if defined(LOADER_GPT_SUPPORT) /* There is no PMBR, check that we have backup GPT */ table->type = PTABLE_GPT; table = ptable_gptread(table, dev, dread); #endif goto out; } /* Check that we have PMBR. Also do some validation. */ dp = (struct dos_partition *)(buf + DOSPARTOFF); for (i = 0, count = 0; i < NDOSPART; i++) { if (dp[i].dp_flag != 0 && dp[i].dp_flag != 0x80) { DEBUG("invalid partition flag %x", dp[i].dp_flag); goto out; } #ifdef LOADER_GPT_SUPPORT if (dp[i].dp_typ == DOSPTYP_PMBR) { table->type = PTABLE_GPT; DEBUG("PMBR detected"); } #endif if (dp[i].dp_typ != 0) count++; } /* Do we have some invalid values? */ if (table->type == PTABLE_GPT && count > 1) { if (dp[1].dp_typ != DOSPTYP_HFS) { table->type = PTABLE_NONE; DEBUG("Incorrect PMBR, ignore it"); } else { DEBUG("Bootcamp detected"); } } #ifdef LOADER_GPT_SUPPORT if (table->type == PTABLE_GPT) { table = ptable_gptread(table, dev, dread); goto out; } #endif #ifdef LOADER_MBR_SUPPORT /* Read MBR. */ DEBUG("MBR detected"); table->type = PTABLE_MBR; for (i = has_ext = 0; i < NDOSPART; i++) { if (dp[i].dp_typ == 0) continue; start = le32dec(&(dp[i].dp_start)); end = le32dec(&(dp[i].dp_size)); if (start == 0 || end == 0) continue; #if 0 /* Some BIOSes return an incorrect number of sectors */ if (start + end - 1 >= sectors) continue; /* XXX: ignore */ #endif if (dp[i].dp_typ == DOSPTYP_EXT || dp[i].dp_typ == DOSPTYP_EXTLBA) has_ext = 1; entry = malloc(sizeof(*entry)); if (entry == NULL) break; entry->part.start = start; entry->part.end = start + end - 1; entry->part.index = i + 1; entry->part.type = mbr_parttype(dp[i].dp_typ); entry->flags = dp[i].dp_flag; entry->type.mbr = dp[i].dp_typ; STAILQ_INSERT_TAIL(&table->entries, entry, entry); DEBUG("new MBR partition added"); } if (has_ext) { table = ptable_ebrread(table, dev, dread); /* FALLTHROUGH */ } #endif /* LOADER_MBR_SUPPORT */ #endif /* LOADER_MBR_SUPPORT || LOADER_GPT_SUPPORT */ out: free(buf); return (table); } void ptable_close(struct ptable *table) { struct pentry *entry; while (!STAILQ_EMPTY(&table->entries)) { entry = STAILQ_FIRST(&table->entries); STAILQ_REMOVE_HEAD(&table->entries, entry); free(entry); } free(table); } enum ptable_type ptable_gettype(const struct ptable *table) { return (table->type); } int ptable_getsize(const struct ptable *table, uint64_t *sizep) { uint64_t tmp = table->sectors * table->sectorsize; if (tmp < table->sectors) return (EOVERFLOW); if (sizep != NULL) *sizep = tmp; return (0); } int ptable_getpart(const struct ptable *table, struct ptable_entry *part, int index) { struct pentry *entry; if (part == NULL || table == NULL) return (EINVAL); STAILQ_FOREACH(entry, &table->entries, entry) { if (entry->part.index != index) continue; memcpy(part, &entry->part, sizeof(*part)); return (0); } return (ENOENT); } /* * Search for a slice with the following preferences: * * 1: Active FreeBSD slice * 2: Non-active FreeBSD slice * 3: Active Linux slice * 4: non-active Linux slice * 5: Active FAT/FAT32 slice * 6: non-active FAT/FAT32 slice */ #define PREF_RAWDISK 0 #define PREF_FBSD_ACT 1 #define PREF_FBSD 2 #define PREF_LINUX_ACT 3 #define PREF_LINUX 4 #define PREF_DOS_ACT 5 #define PREF_DOS 6 #define PREF_NONE 7 int ptable_getbestpart(const struct ptable *table, struct ptable_entry *part) { struct pentry *entry, *best; int pref, preflevel; if (part == NULL || table == NULL) return (EINVAL); best = NULL; preflevel = pref = PREF_NONE; STAILQ_FOREACH(entry, &table->entries, entry) { #ifdef LOADER_MBR_SUPPORT if (table->type == PTABLE_MBR) { switch (entry->type.mbr) { case DOSPTYP_386BSD: pref = entry->flags & 0x80 ? PREF_FBSD_ACT: PREF_FBSD; break; case DOSPTYP_LINUX: pref = entry->flags & 0x80 ? PREF_LINUX_ACT: PREF_LINUX; break; case 0x01: /* DOS/Windows */ case 0x04: case 0x06: case 0x0c: case 0x0e: case DOSPTYP_FAT32: pref = entry->flags & 0x80 ? PREF_DOS_ACT: PREF_DOS; break; default: pref = PREF_NONE; } } #endif /* LOADER_MBR_SUPPORT */ #ifdef LOADER_GPT_SUPPORT if (table->type == PTABLE_GPT) { if (entry->part.type == PART_DOS) pref = PREF_DOS; else if (entry->part.type == PART_FREEBSD_UFS || entry->part.type == PART_FREEBSD_ZFS) pref = PREF_FBSD; else pref = PREF_NONE; } #endif /* LOADER_GPT_SUPPORT */ if (pref < preflevel) { preflevel = pref; best = entry; } } if (best != NULL) { memcpy(part, &best->part, sizeof(*part)); return (0); } return (ENOENT); } int ptable_iterate(const struct ptable *table, void *arg, ptable_iterate_t *iter) { struct pentry *entry; char name[32]; int ret = 0; name[0] = '\0'; STAILQ_FOREACH(entry, &table->entries, entry) { #ifdef LOADER_MBR_SUPPORT if (table->type == PTABLE_MBR) sprintf(name, "s%d", entry->part.index); else #endif #ifdef LOADER_GPT_SUPPORT if (table->type == PTABLE_GPT) sprintf(name, "p%d", entry->part.index); else #endif #ifdef LOADER_VTOC8_SUPPORT if (table->type == PTABLE_VTOC8) sprintf(name, "%c", (uint8_t) 'a' + entry->part.index); else #endif if (table->type == PTABLE_BSD) sprintf(name, "%c", (uint8_t) 'a' + entry->part.index); if ((ret = iter(arg, name, &entry->part)) != 0) return (ret); } return (ret); }