diff options
Diffstat (limited to 'libblkid/src/superblocks')
60 files changed, 10300 insertions, 0 deletions
diff --git a/libblkid/src/superblocks/adaptec_raid.c b/libblkid/src/superblocks/adaptec_raid.c new file mode 100644 index 0000000..5fc5fc4 --- /dev/null +++ b/libblkid/src/superblocks/adaptec_raid.c @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct adaptec_metadata { + + uint32_t b0idcode; + uint8_t lunsave[8]; + uint16_t sdtype; + uint16_t ssavecyl; + uint8_t ssavehed; + uint8_t ssavesec; + uint8_t sb0flags; + uint8_t jbodEnable; + uint8_t lundsave; + uint8_t svpdirty; + uint16_t biosInfo; + uint16_t svwbskip; + uint16_t svwbcln; + uint16_t svwbmax; + uint16_t res3; + uint16_t svwbmin; + uint16_t res4; + uint16_t svrcacth; + uint16_t svwcacth; + uint16_t svwbdly; + uint8_t svsdtime; + uint8_t res5; + uint16_t firmval; + uint16_t firmbln; + uint32_t firmblk; + uint32_t fstrsvrb; + uint16_t svBlockStorageTid; + uint16_t svtid; + uint8_t svseccfl; + uint8_t res6; + uint8_t svhbanum; + uint8_t resver; + uint32_t drivemagic; + uint8_t reserved[20]; + uint8_t testnum; + uint8_t testflags; + uint16_t maxErrorCount; + uint32_t count; + uint32_t startTime; + uint32_t interval; + uint8_t tstxt0; + uint8_t tstxt1; + uint8_t serNum[32]; + uint8_t res8[102]; + uint32_t fwTestMagic; + uint32_t fwTestSeqNum; + uint8_t fwTestRes[8]; + uint32_t smagic; + uint32_t raidtbl; + uint16_t raidline; + uint8_t res9[0xF6]; +} __attribute__((packed)); + +#define AD_SIGNATURE 0x4450544D /* "DPTM" */ +#define AD_MAGIC 0x37FC4D1E + +static int probe_adraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct adaptec_metadata *ad; + + if (pr->size < 0x10000) + return BLKID_PROBE_NONE; + + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return BLKID_PROBE_NONE; + + off = ((pr->size / 0x200)-1) * 0x200; + ad = (struct adaptec_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct adaptec_metadata)); + if (!ad) + return errno ? -errno : BLKID_PROBE_NONE; + + if (ad->smagic != be32_to_cpu(AD_SIGNATURE)) + return BLKID_PROBE_NONE; + if (ad->b0idcode != be32_to_cpu(AD_MAGIC)) + return BLKID_PROBE_NONE; + if (blkid_probe_sprintf_version(pr, "%u", ad->resver) != 0) + return BLKID_PROBE_NONE; + if (blkid_probe_set_magic(pr, off, sizeof(ad->b0idcode), + (unsigned char *) &ad->b0idcode)) + return BLKID_PROBE_NONE; + + return BLKID_PROBE_OK; +} + +const struct blkid_idinfo adraid_idinfo = { + .name = "adaptec_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_adraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/apfs.c b/libblkid/src/superblocks/apfs.c new file mode 100644 index 0000000..3332ef2 --- /dev/null +++ b/libblkid/src/superblocks/apfs.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2018 Harry Mallon <hjmallon@gmail.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include "superblocks.h" + +#define APFS_CONTAINER_SUPERBLOCK_TYPE 1 +#define APFS_CONTAINER_SUPERBLOCK_SUBTYPE 0 +#define APFS_STANDARD_BLOCK_SIZE 4096 + +/* + * This struct is much longer than this, but this seems + * to contain the useful bits (for now). + * + * All values are little-endian. + */ +struct apfs_super_block { + // Generic part to all APFS objects + uint64_t checksum; + uint64_t oid; + uint64_t xid; + uint16_t type; + uint16_t flags; + uint16_t subtype; + uint16_t pad; + + // Specific to container header + uint32_t magic; // 'NXSB' + uint32_t block_size; + uint64_t block_count; + uint64_t features; + uint64_t read_only_features; + uint64_t incompatible_features; + uint8_t uuid[16]; +}; + +static int probe_apfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct apfs_super_block *sb; + + sb = blkid_probe_get_sb(pr, mag, struct apfs_super_block); + if (!sb) + return errno ? -errno : BLKID_PROBE_NONE; + + if (le16_to_cpu(sb->type) != APFS_CONTAINER_SUPERBLOCK_TYPE) + return BLKID_PROBE_NONE; + + if (le16_to_cpu(sb->subtype) != APFS_CONTAINER_SUPERBLOCK_SUBTYPE) + return BLKID_PROBE_NONE; + + if (le16_to_cpu(sb->pad) != 0) + return BLKID_PROBE_NONE; + + /* + * This check is pretty draconian, but should avoid false + * positives. Can be improved as more APFS documentation + * is published. + */ + if (le32_to_cpu(sb->block_size) != APFS_STANDARD_BLOCK_SIZE) + return BLKID_PROBE_NONE; + + if (blkid_probe_set_uuid(pr, sb->uuid) < 0) + return BLKID_PROBE_NONE; + + blkid_probe_set_block_size(pr, le32_to_cpu(sb->block_size)); + + return BLKID_PROBE_OK; +} + +const struct blkid_idinfo apfs_idinfo = +{ + .name = "apfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_apfs, + .magics = + { + { .magic = "NXSB", .len = 4, .sboff = 32 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/bcache.c b/libblkid/src/superblocks/bcache.c new file mode 100644 index 0000000..aa2dc04 --- /dev/null +++ b/libblkid/src/superblocks/bcache.c @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2013 Rolf Fokkens <rolf@fokkens.nl> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + * + * Based on code fragments from bcache-tools by Kent Overstreet: + * http://evilpiepirate.org/git/bcache-tools.git + */ + +#include <stddef.h> +#include <stdio.h> + +#include "superblocks.h" + +#define SB_LABEL_SIZE 32 +#define SB_JOURNAL_BUCKETS 256U + +#define node(i, j) ((i)->d + (j)) +#define end(i) node(i, le16_to_cpu((i)->keys)) + +/* + * The bcache_super_block is heavily simplified version of struct cache_sb in kernel. + * https://github.com/torvalds/linux/blob/master/include/uapi/linux/bcache.h + */ +struct bcache_super_block { + uint64_t csum; + uint64_t offset; /* where this super block was written */ + uint64_t version; + uint8_t magic[16]; /* bcache file system identifier */ + uint8_t uuid[16]; /* device identifier */ +}; + +/* magic string */ +#define BCACHE_SB_MAGIC "\xc6\x85\x73\xf6\x4e\x1a\x45\xca\x82\x65\xf5\x7f\x48\xba\x6d\x81" +/* magic string len */ +#define BCACHE_SB_MAGIC_LEN (sizeof(BCACHE_SB_MAGIC) - 1) +/* super block offset */ +#define BCACHE_SB_OFF 0x1000 +/* supper block offset in kB */ +#define BCACHE_SB_KBOFF (BCACHE_SB_OFF >> 10) +/* magic string offset within super block */ +#define BCACHE_SB_MAGIC_OFF offsetof (struct bcache_super_block, magic) + +static int probe_bcache (blkid_probe pr, const struct blkid_idmag *mag) +{ + struct bcache_super_block *bcs; + + bcs = blkid_probe_get_sb(pr, mag, struct bcache_super_block); + if (!bcs) + return errno ? -errno : BLKID_PROBE_NONE; + + if (le64_to_cpu(bcs->offset) != BCACHE_SB_OFF / 512) + return BLKID_PROBE_NONE; + + if (blkid_probe_set_uuid(pr, bcs->uuid) < 0) + return BLKID_PROBE_NONE; + + return BLKID_PROBE_OK; +} + +const struct blkid_idinfo bcache_idinfo = +{ + .name = "bcache", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_bcache, + .minsz = 8192, + .magics = + { + { + .magic = BCACHE_SB_MAGIC, + .len = BCACHE_SB_MAGIC_LEN, + .kboff = BCACHE_SB_KBOFF, + .sboff = BCACHE_SB_MAGIC_OFF + }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/befs.c b/libblkid/src/superblocks/befs.c new file mode 100644 index 0000000..211feae --- /dev/null +++ b/libblkid/src/superblocks/befs.c @@ -0,0 +1,544 @@ +/* + * Copyright (C) 2010 Jeroen Oortwijn <oortwijn@gmail.com> + * + * Partly based on the Haiku BFS driver by + * Axel Dörfler <axeld@pinc-software.de> + * + * Also inspired by the Linux BeFS driver by + * Will Dyson <will_dyson@pobox.com>, et al. + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <inttypes.h> + +#include "superblocks.h" + +#define B_OS_NAME_LENGTH 0x20 +#define SUPER_BLOCK_MAGIC1 0x42465331 /* BFS1 */ +#define SUPER_BLOCK_MAGIC2 0xdd121031 +#define SUPER_BLOCK_MAGIC3 0x15b6830e +#define SUPER_BLOCK_FS_ENDIAN 0x42494745 /* BIGE */ +#define INODE_MAGIC1 0x3bbe0ad9 +#define BPLUSTREE_MAGIC 0x69f6c2e8 +#define BPLUSTREE_NULL -1LL +#define NUM_DIRECT_BLOCKS 12 +#define B_UINT64_TYPE 0x554c4c47 /* ULLG */ +#define KEY_NAME "be:volume_id" +#define KEY_SIZE 8 + +#define FS16_TO_CPU(value, fs_is_le) (fs_is_le ? le16_to_cpu(value) \ + : be16_to_cpu(value)) +#define FS32_TO_CPU(value, fs_is_le) (fs_is_le ? le32_to_cpu(value) \ + : be32_to_cpu(value)) +#define FS64_TO_CPU(value, fs_is_le) (fs_is_le ? le64_to_cpu(value) \ + : be64_to_cpu(value)) + +typedef struct block_run { + int32_t allocation_group; + uint16_t start; + uint16_t len; +} __attribute__((packed)) block_run, inode_addr; + +struct befs_super_block { + char name[B_OS_NAME_LENGTH]; + int32_t magic1; + int32_t fs_byte_order; + uint32_t block_size; + uint32_t block_shift; + int64_t num_blocks; + int64_t used_blocks; + int32_t inode_size; + int32_t magic2; + int32_t blocks_per_ag; + int32_t ag_shift; + int32_t num_ags; + int32_t flags; + block_run log_blocks; + int64_t log_start; + int64_t log_end; + int32_t magic3; + inode_addr root_dir; + inode_addr indices; + int32_t pad[8]; +} __attribute__((packed)); + +typedef struct data_stream { + block_run direct[NUM_DIRECT_BLOCKS]; + int64_t max_direct_range; + block_run indirect; + int64_t max_indirect_range; + block_run double_indirect; + int64_t max_double_indirect_range; + int64_t size; +} __attribute__((packed)) data_stream; + +struct befs_inode { + int32_t magic1; + inode_addr inode_num; + int32_t uid; + int32_t gid; + int32_t mode; + int32_t flags; + int64_t create_time; + int64_t last_modified_time; + inode_addr parent; + inode_addr attributes; + uint32_t type; + int32_t inode_size; + uint32_t etc; + data_stream data; + int32_t pad[4]; + int32_t small_data[0]; +} __attribute__((packed)); + +struct small_data { + uint32_t type; + uint16_t name_size; + uint16_t data_size; + char name[0]; +} __attribute__((packed)); + +struct bplustree_header { + uint32_t magic; + uint32_t node_size; + uint32_t max_number_of_levels; + uint32_t data_type; + int64_t root_node_pointer; + int64_t free_node_pointer; + int64_t maximum_size; +} __attribute__((packed)); + +struct bplustree_node { + int64_t left_link; + int64_t right_link; + int64_t overflow_link; + uint16_t all_key_count; + uint16_t all_key_length; + char name[0]; +} __attribute__((packed)); + +static unsigned char *get_block_run(blkid_probe pr, const struct befs_super_block *bs, + const struct block_run *br, int fs_le) +{ + return blkid_probe_get_buffer(pr, + ((uint64_t) FS32_TO_CPU(br->allocation_group, fs_le) + << FS32_TO_CPU(bs->ag_shift, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)) + + ((uint64_t) FS16_TO_CPU(br->start, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)), + (uint64_t) FS16_TO_CPU(br->len, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)); +} + +static unsigned char *get_custom_block_run(blkid_probe pr, + const struct befs_super_block *bs, + const struct block_run *br, + int64_t offset, uint32_t length, int fs_le) +{ + if (offset + length > (int64_t) FS16_TO_CPU(br->len, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)) + return NULL; + + return blkid_probe_get_buffer(pr, + ((uint64_t) FS32_TO_CPU(br->allocation_group, fs_le) + << FS32_TO_CPU(bs->ag_shift, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)) + + ((uint64_t) FS16_TO_CPU(br->start, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)) + + offset, + length); +} + +static unsigned char *get_tree_node(blkid_probe pr, const struct befs_super_block *bs, + const struct data_stream *ds, + int64_t start, uint32_t length, int fs_le) +{ + if (start < (int64_t) FS64_TO_CPU(ds->max_direct_range, fs_le)) { + int64_t br_len; + size_t i; + + for (i = 0; i < NUM_DIRECT_BLOCKS; i++) { + br_len = (int64_t) FS16_TO_CPU(ds->direct[i].len, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le); + if (start < br_len) + return get_custom_block_run(pr, bs, + &ds->direct[i], + start, length, fs_le); + start -= br_len; + } + } else if (start < (int64_t) FS64_TO_CPU(ds->max_indirect_range, fs_le)) { + struct block_run *br; + int64_t max_br, br_len, i; + + start -= FS64_TO_CPU(ds->max_direct_range, fs_le); + max_br = ((int64_t) FS16_TO_CPU(ds->indirect.len, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)) + / sizeof(struct block_run); + + br = (struct block_run *) get_block_run(pr, bs, &ds->indirect, + fs_le); + if (!br) + return NULL; + + for (i = 0; i < max_br; i++) { + br_len = (int64_t) FS16_TO_CPU(br[i].len, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le); + if (start < br_len) + return get_custom_block_run(pr, bs, &br[i], + start, length, fs_le); + start -= br_len; + } + } else if (start < (int64_t) FS64_TO_CPU(ds->max_double_indirect_range, fs_le)) { + struct block_run *br; + int64_t max_br, di_br_size, br_per_di_br, di_index, i_index; + + start -= (int64_t) FS64_TO_CPU(ds->max_indirect_range, fs_le); + + di_br_size = (int64_t) FS16_TO_CPU(ds->double_indirect.len, + fs_le) << FS32_TO_CPU(bs->block_shift, fs_le); + if (di_br_size == 0) + return NULL; + + br_per_di_br = di_br_size / sizeof(struct block_run); + if (br_per_di_br == 0) + return NULL; + + di_index = start / (br_per_di_br * di_br_size); + i_index = (start % (br_per_di_br * di_br_size)) / di_br_size; + start = (start % (br_per_di_br * di_br_size)) % di_br_size; + + if (di_index >= br_per_di_br) + return NULL; /* Corrupt? */ + + br = (struct block_run *) get_block_run(pr, bs, + &ds->double_indirect, fs_le); + if (!br) + return NULL; + + max_br = ((int64_t)FS16_TO_CPU(br[di_index].len, fs_le) + << FS32_TO_CPU(bs->block_shift, fs_le)) + / sizeof(struct block_run); + + if (i_index >= max_br) + return NULL; /* Corrupt? */ + + br = (struct block_run *) get_block_run(pr, bs, &br[di_index], + fs_le); + if (!br) + return NULL; + + return get_custom_block_run(pr, bs, &br[i_index], start, length, + fs_le); + } + return NULL; +} + +#define BAD_KEYS -2 + +static int32_t compare_keys(const char keys1[], uint16_t keylengths1[], + int32_t index, const char *key2, + uint16_t keylength2, uint16_t all_key_length, + int fs_le) +{ + const char *key1; + uint16_t keylength1, keystart1; + int32_t result; + + keystart1 = index == 0 ? 0 : FS16_TO_CPU(keylengths1[index - 1], fs_le); + keylength1 = FS16_TO_CPU(keylengths1[index], fs_le) - keystart1; + + if (keystart1 + keylength1 > all_key_length) + return BAD_KEYS; /* Corrupt? */ + + key1 = &keys1[keystart1]; + + result = strncmp(key1, key2, min(keylength1, keylength2)); + + if (result == 0) + return keylength1 - keylength2; + + if (result < 0) /* Don't clash with BAD_KEYS */ + result = -1; + + return result; +} + +static int64_t get_key_value(blkid_probe pr, const struct befs_super_block *bs, + const struct befs_inode *bi, const char *key, int fs_le) +{ + struct bplustree_header *bh; + struct bplustree_node *bn; + uint16_t *keylengths; + int64_t *values; + int64_t node_pointer; + uint32_t bn_size, all_key_count, all_key_length; + uint32_t keylengths_offset, values_offset; + int32_t first, last, mid, cmp; + int loop_detect = 0; + + errno = 0; + bh = (struct bplustree_header *) get_tree_node(pr, bs, &bi->data, 0, + sizeof(struct bplustree_header), fs_le); + if (!bh) + return errno ? -errno : -ENOENT; + + if ((int32_t) FS32_TO_CPU(bh->magic, fs_le) != BPLUSTREE_MAGIC) + return -ENOENT; + + node_pointer = FS64_TO_CPU(bh->root_node_pointer, fs_le); + bn_size = FS32_TO_CPU(bh->node_size, fs_le); + + if (bn_size < sizeof(struct bplustree_node)) + return -ENOENT; /* Corrupt? */ + + do { + errno = 0; + + bn = (struct bplustree_node *) get_tree_node(pr, bs, &bi->data, + node_pointer, bn_size, fs_le); + if (!bn) + return errno ? -errno : -ENOENT; + + all_key_count = FS16_TO_CPU(bn->all_key_count, fs_le); + all_key_length = FS16_TO_CPU(bn->all_key_length, fs_le); + keylengths_offset = + (sizeof(struct bplustree_node) + all_key_length + + sizeof(int64_t) - 1) & ~(sizeof(int64_t) - 1); + values_offset = keylengths_offset + + all_key_count * sizeof(uint16_t); + + if (values_offset + all_key_count * sizeof(uint64_t) > bn_size) + return -ENOENT; /* Corrupt? */ + + keylengths = (uint16_t *) ((uint8_t *) bn + keylengths_offset); + values = (int64_t *) ((uint8_t *) bn + values_offset); + + first = 0; + mid = 0; + last = all_key_count - 1; + + cmp = compare_keys(bn->name, keylengths, last, key, + strlen(key), all_key_length, fs_le); + if (cmp == BAD_KEYS) + return -ENOENT; + + if (cmp == 0) { + if ((int64_t) FS64_TO_CPU(bn->overflow_link, fs_le) + == BPLUSTREE_NULL) + return FS64_TO_CPU(values[last], fs_le); + + node_pointer = FS64_TO_CPU(values[last], fs_le); + } else if (cmp < 0) + node_pointer = FS64_TO_CPU(bn->overflow_link, fs_le); + else { + while (first <= last) { + mid = (first + last) / 2; + + cmp = compare_keys(bn->name, keylengths, mid, + key, strlen(key), + all_key_length, fs_le); + if (cmp == BAD_KEYS) + return -ENOENT; + + if (cmp == 0) { + if ((int64_t) FS64_TO_CPU(bn->overflow_link, + fs_le) == BPLUSTREE_NULL) + return FS64_TO_CPU(values[mid], + fs_le); + break; + } + + if (cmp < 0) + first = mid + 1; + else + last = mid - 1; + } + if (cmp < 0) + node_pointer = FS64_TO_CPU(values[mid + 1], + fs_le); + else + node_pointer = FS64_TO_CPU(values[mid], fs_le); + } + } while (++loop_detect < 100 && + (int64_t) FS64_TO_CPU(bn->overflow_link, fs_le) + != BPLUSTREE_NULL); + return 0; +} + +static int get_uuid(blkid_probe pr, const struct befs_super_block *bs, + uint64_t * const uuid, int fs_le) +{ + struct befs_inode *bi; + struct small_data *sd; + uint64_t bi_size, offset, sd_size, sd_total_size; + + bi = (struct befs_inode *) get_block_run(pr, bs, &bs->root_dir, fs_le); + if (!bi) + return errno ? -errno : BLKID_PROBE_NONE; + + if (FS32_TO_CPU(bi->magic1, fs_le) != INODE_MAGIC1) + return BLKID_PROBE_NONE; + + bi_size = (uint64_t)FS16_TO_CPU(bs->root_dir.len, fs_le) << + FS32_TO_CPU(bs->block_shift, fs_le); + sd_total_size = min(bi_size - sizeof(struct befs_inode), + (uint64_t)FS32_TO_CPU(bi->inode_size, fs_le)); + + offset = 0; + + while (offset + sizeof(struct small_data) <= sd_total_size) { + sd = (struct small_data *) ((uint8_t *)bi->small_data + offset); + sd_size = sizeof(struct small_data) + + FS16_TO_CPU(sd->name_size, fs_le) + 3 + + FS16_TO_CPU(sd->data_size, fs_le) + 1; + + if (offset + sd_size > sd_total_size) + break; + + if (FS32_TO_CPU(sd->type, fs_le) == B_UINT64_TYPE + && FS16_TO_CPU(sd->name_size, fs_le) == strlen(KEY_NAME) + && FS16_TO_CPU(sd->data_size, fs_le) == KEY_SIZE + && strcmp(sd->name, KEY_NAME) == 0) { + + memcpy(uuid, + sd->name + FS16_TO_CPU(sd->name_size, fs_le) + 3, + sizeof(uint64_t)); + + break; + } + + if (FS32_TO_CPU(sd->type, fs_le) == 0 + && FS16_TO_CPU(sd->name_size, fs_le) == 0 + && FS16_TO_CPU(sd->data_size, fs_le) == 0) + break; + + offset += sd_size; + } + + if (*uuid == 0 + && (FS32_TO_CPU(bi->attributes.allocation_group, fs_le) != 0 + || FS16_TO_CPU(bi->attributes.start, fs_le) != 0 + || FS16_TO_CPU(bi->attributes.len, fs_le) != 0)) { + int64_t value; + + bi = (struct befs_inode *) get_block_run(pr, bs, + &bi->attributes, fs_le); + if (!bi) + return errno ? -errno : BLKID_PROBE_NONE; + + if (FS32_TO_CPU(bi->magic1, fs_le) != INODE_MAGIC1) + return BLKID_PROBE_NONE; + + value = get_key_value(pr, bs, bi, KEY_NAME, fs_le); + if (value < 0) + return value == -ENOENT ? BLKID_PROBE_NONE : value; + + if (value > 0) { + bi = (struct befs_inode *) blkid_probe_get_buffer(pr, + value << FS32_TO_CPU(bs->block_shift, fs_le), + FS32_TO_CPU(bs->block_size, fs_le)); + if (!bi) + return errno ? -errno : BLKID_PROBE_NONE; + + if (FS32_TO_CPU(bi->magic1, fs_le) != INODE_MAGIC1) + return 1; + + if (FS32_TO_CPU(bi->type, fs_le) == B_UINT64_TYPE + && FS64_TO_CPU(bi->data.size, fs_le) == KEY_SIZE + && FS16_TO_CPU(bi->data.direct[0].len, fs_le) + == 1) { + uint64_t *attr_data; + + attr_data = (uint64_t *) get_block_run(pr, bs, + &bi->data.direct[0], fs_le); + if (!attr_data) + return errno ? -errno : BLKID_PROBE_NONE; + + *uuid = *attr_data; + } + } + } + return 0; +} + +static int probe_befs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct befs_super_block *bs; + const char *version = NULL; + uint64_t volume_id = 0; + uint32_t block_size, block_shift; + int fs_le, ret; + + bs = (struct befs_super_block *) blkid_probe_get_buffer(pr, + mag->sboff - B_OS_NAME_LENGTH, + sizeof(struct befs_super_block)); + if (!bs) + return errno ? -errno : BLKID_PROBE_NONE; + + if (le32_to_cpu(bs->magic1) == SUPER_BLOCK_MAGIC1 + && le32_to_cpu(bs->magic2) == SUPER_BLOCK_MAGIC2 + && le32_to_cpu(bs->magic3) == SUPER_BLOCK_MAGIC3 + && le32_to_cpu(bs->fs_byte_order) == SUPER_BLOCK_FS_ENDIAN) { + fs_le = 1; + version = "little-endian"; + } else if (be32_to_cpu(bs->magic1) == SUPER_BLOCK_MAGIC1 + && be32_to_cpu(bs->magic2) == SUPER_BLOCK_MAGIC2 + && be32_to_cpu(bs->magic3) == SUPER_BLOCK_MAGIC3 + && be32_to_cpu(bs->fs_byte_order) == SUPER_BLOCK_FS_ENDIAN) { + fs_le = 0; + version = "big-endian"; + } else + return BLKID_PROBE_NONE; + + block_size = FS32_TO_CPU(bs->block_size, fs_le); + block_shift = FS32_TO_CPU(bs->block_shift, fs_le); + + if (block_shift < 10 || block_shift > 13 || + block_size != 1U << block_shift) + return BLKID_PROBE_NONE; + + ret = get_uuid(pr, bs, &volume_id, fs_le); + + if (ret != 0) + return ret; + + /* + * all checks pass, set LABEL, VERSION and UUID + */ + if (*bs->name != '\0') + blkid_probe_set_label(pr, (unsigned char *) bs->name, + sizeof(bs->name)); + if (version) + blkid_probe_set_version(pr, version); + + if (volume_id) + blkid_probe_sprintf_uuid(pr, (unsigned char *) &volume_id, + sizeof(volume_id), "%016" PRIx64, + FS64_TO_CPU(volume_id, fs_le)); + + blkid_probe_set_block_size(pr, block_size); + + return BLKID_PROBE_OK; +} + +const struct blkid_idinfo befs_idinfo = +{ + .name = "befs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_befs, + .minsz = 1024 * 1440, + .magics = { + { .magic = "BFS1", .len = 4, .sboff = B_OS_NAME_LENGTH }, + { .magic = "1SFB", .len = 4, .sboff = B_OS_NAME_LENGTH }, + { .magic = "BFS1", .len = 4, .sboff = 0x200 + + B_OS_NAME_LENGTH }, + { .magic = "1SFB", .len = 4, .sboff = 0x200 + + B_OS_NAME_LENGTH }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/bfs.c b/libblkid/src/superblocks/bfs.c new file mode 100644 index 0000000..8a34c58 --- /dev/null +++ b/libblkid/src/superblocks/bfs.c @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2009 Red Hat, Inc. + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include "superblocks.h" + +/* + * BFS actually has two different labels in the superblock, each + * of them only 6 bytes long. Until we find out what their use + * we just ignore them. + */ +const struct blkid_idinfo bfs_idinfo = +{ + .name = "bfs", + .usage = BLKID_USAGE_FILESYSTEM, + .magics = { + { .magic = "\xce\xfa\xad\x1b", .len = 4 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/bitlocker.c b/libblkid/src/superblocks/bitlocker.c new file mode 100644 index 0000000..111edf3 --- /dev/null +++ b/libblkid/src/superblocks/bitlocker.c @@ -0,0 +1,191 @@ +/* + * Copyright (C) 2018 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +#define BDE_HDR_SIZE 512 +#define BDE_HDR_OFFSET 0 + +struct bde_header_win7 { +/* 0 */ unsigned char boot_entry_point[3]; +/* 3 */ unsigned char fs_signature[8]; +/* 11 */ unsigned char __dummy1[67 - 11]; +/* 67 */ uint32_t volume_serial; /* NTFS uses 64bit serial number */ +/* 71 */ unsigned char volume_label[11]; /* "NO NAME\x20\x20\x20\x20" only */ +/* 82 */ unsigned char __dummy2[160 - 82]; +/* 160 */ unsigned char guid[16]; /* BitLocker specific GUID */ +/* 176 */ uint64_t fve_metadata_offset; +} __attribute__((packed)); + + +struct bde_header_togo { +/* 0 */ unsigned char boot_entry_point[3]; +/* 3 */ unsigned char fs_signature[8]; +/* 11 */ unsigned char __dummy[424 - 11]; +/* 424 */ unsigned char guid[16]; +/* 440 */ uint64_t fve_metadata_offset; +} __attribute__((packed)); + + +struct bde_fve_metadata { +/* 0 */ unsigned char signature[8]; +/* 8 */ uint16_t size; +/* 10 */ uint16_t version; +}; + +enum { + BDE_VERSION_VISTA = 0, + BDE_VERSION_WIN7, + BDE_VERSION_TOGO +}; + +#define BDE_MAGIC_VISTA "\xeb\x52\x90-FVE-FS-" +#define BDE_MAGIC_WIN7 "\xeb\x58\x90-FVE-FS-" +#define BDE_MAGIC_TOGO "\xeb\x58\x90MSWIN4.1" + +#define BDE_MAGIC_FVE "-FVE-FS-" + +static int get_bitlocker_type(const unsigned char *buf) +{ + size_t i; + static const char *map[] = { + [BDE_VERSION_VISTA] = BDE_MAGIC_VISTA, + [BDE_VERSION_WIN7] = BDE_MAGIC_WIN7, + [BDE_VERSION_TOGO] = BDE_MAGIC_TOGO + }; + + for (i = 0; i < ARRAY_SIZE(map); i++) { + if (memcmp(buf, map[i], 11) == 0) + return (int) i; + } + + return -1; +} + +/* Returns: < 0 error, 1 nothing, 0 success + */ +static int get_bitlocker_headers(blkid_probe pr, + int *type, + const unsigned char **buf_hdr, + const unsigned char **buf_fve) +{ + + const unsigned char *buf; + const struct bde_fve_metadata *fve; + uint64_t off = 0; + int kind; + + if (buf_hdr) + *buf_hdr = NULL; + if (buf_fve) + *buf_fve = NULL; + if (type) + *type = -1; + + buf = blkid_probe_get_buffer(pr, BDE_HDR_OFFSET, BDE_HDR_SIZE); + if (!buf) + return errno ? -errno : 1; + + kind = get_bitlocker_type(buf); + + /* Check BitLocker header */ + switch (kind) { + case BDE_VERSION_WIN7: + off = le64_to_cpu(((const struct bde_header_win7 *) buf)->fve_metadata_offset); + break; + case BDE_VERSION_TOGO: + off = le64_to_cpu(((const struct bde_header_togo *) buf)->fve_metadata_offset); + break; + case BDE_VERSION_VISTA: + goto done; + default: + goto nothing; + } + + if (!off) + goto nothing; + if (buf_hdr) + *buf_hdr = buf; + + /* Check Bitlocker FVE metadata header */ + buf = blkid_probe_get_buffer(pr, off, sizeof(struct bde_fve_metadata)); + if (!buf) + return errno ? -errno : 1; + + fve = (const struct bde_fve_metadata *) buf; + if (memcmp(fve->signature, BDE_MAGIC_FVE, sizeof(fve->signature)) != 0) + goto nothing; + if (buf_fve) + *buf_fve = buf; +done: + if (type) + *type = kind; + return 0; +nothing: + return 1; +} + +/* + * This is used by vFAT and NTFS prober to avoid collisions with bitlocker. + */ +int blkid_probe_is_bitlocker(blkid_probe pr) +{ + return get_bitlocker_headers(pr, NULL, NULL, NULL) == 0; +} + +static int probe_bitlocker(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + const unsigned char *buf_fve = NULL; + const unsigned char *buf_hdr = NULL; + int rc, kind; + + rc = get_bitlocker_headers(pr, &kind, &buf_hdr, &buf_fve); + if (rc) + return rc; + + if (kind == BDE_VERSION_WIN7) { + const struct bde_header_win7 *hdr = (const struct bde_header_win7 *) buf_hdr; + + /* Unfortunately, it seems volume_serial is always zero */ + blkid_probe_sprintf_uuid(pr, + (const unsigned char *) &hdr->volume_serial, + sizeof(hdr->volume_serial), + "%016d", le32_to_cpu(hdr->volume_serial)); + } + + if (buf_fve) { + const struct bde_fve_metadata *fve = (const struct bde_fve_metadata *) buf_fve; + + blkid_probe_sprintf_version(pr, "%d", fve->version); + } + return 0; +} + +/* See header details: + * https://github.com/libyal/libbde/blob/master/documentation/BitLocker%20Drive%20Encryption%20(BDE)%20format.asciidoc + */ +const struct blkid_idinfo bitlocker_idinfo = +{ + .name = "BitLocker", + .usage = BLKID_USAGE_CRYPTO, + .probefunc = probe_bitlocker, + .magics = + { + { .magic = BDE_MAGIC_VISTA, .len = 11 }, + { .magic = BDE_MAGIC_WIN7, .len = 11 }, + { .magic = BDE_MAGIC_TOGO, .len = 11 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/bluestore.c b/libblkid/src/superblocks/bluestore.c new file mode 100644 index 0000000..2ff1f35 --- /dev/null +++ b/libblkid/src/superblocks/bluestore.c @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2018 by Kenneth Van Alstyne <kvanals@kvanals.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + * + * + * Ceph BlueStore is one of the supported storage + * methods for Object Storage Devices (OSDs). + * This is used to detect the backing block devices + * used for these types of OSDs in a Ceph Cluster. + * + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <inttypes.h> +#include <stddef.h> + +#include "bitops.h" +#include "superblocks.h" + +#define BLUESTORE_MAGIC_L 22 + +struct bluestore_phdr { + uint8_t magic[BLUESTORE_MAGIC_L]; +} __attribute__((packed)); + +static int probe_bluestore(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct bluestore_phdr *header; + + header = blkid_probe_get_sb(pr, mag, struct bluestore_phdr); + if (header == NULL) + return errno ? -errno : 1; + + return 0; +} + +const struct blkid_idinfo bluestore_idinfo = +{ + .name = "ceph_bluestore", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_bluestore, + .magics = + { + { .magic = "bluestore block device", .len = 22 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/btrfs.c b/libblkid/src/superblocks/btrfs.c new file mode 100644 index 0000000..78d767d --- /dev/null +++ b/libblkid/src/superblocks/btrfs.c @@ -0,0 +1,259 @@ +/* + * Copyright (C) 2009 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> +#include <stdbool.h> +#include <assert.h> +#include <inttypes.h> + +#ifdef HAVE_LINUX_BLKZONED_H +#include <linux/blkzoned.h> +#endif + +#include "superblocks.h" + +struct btrfs_super_block { + uint8_t csum[32]; + uint8_t fsid[16]; + uint64_t bytenr; + uint64_t flags; + uint8_t magic[8]; + uint64_t generation; + uint64_t root; + uint64_t chunk_root; + uint64_t log_root; + uint64_t log_root_transid; + uint64_t total_bytes; + uint64_t bytes_used; + uint64_t root_dir_objectid; + uint64_t num_devices; + uint32_t sectorsize; + uint32_t nodesize; + uint32_t leafsize; + uint32_t stripesize; + uint32_t sys_chunk_array_size; + uint64_t chunk_root_generation; + uint64_t compat_flags; + uint64_t compat_ro_flags; + uint64_t incompat_flags; + uint16_t csum_type; + uint8_t root_level; + uint8_t chunk_root_level; + uint8_t log_root_level; + struct btrfs_dev_item { + uint64_t devid; + uint64_t total_bytes; + uint64_t bytes_used; + uint32_t io_align; + uint32_t io_width; + uint32_t sector_size; + uint64_t type; + uint64_t generation; + uint64_t start_offset; + uint32_t dev_group; + uint8_t seek_speed; + uint8_t bandwidth; + uint8_t uuid[16]; + uint8_t fsid[16]; + } __attribute__ ((__packed__)) dev_item; + uint8_t label[256]; +} __attribute__ ((__packed__)); + +#define BTRFS_SUPER_INFO_SIZE 4096 + +/* Number of superblock log zones */ +#define BTRFS_NR_SB_LOG_ZONES 2 + +/* Introduce some macros and types to unify the code with kernel side */ +#define SECTOR_SHIFT 9 + +typedef uint64_t sector_t; + +#ifdef HAVE_LINUX_BLKZONED_H +static int sb_write_pointer(blkid_probe pr, struct blk_zone *zones, uint64_t *wp_ret) +{ + bool empty[BTRFS_NR_SB_LOG_ZONES]; + bool full[BTRFS_NR_SB_LOG_ZONES]; + sector_t sector; + + assert(zones[0].type != BLK_ZONE_TYPE_CONVENTIONAL && + zones[1].type != BLK_ZONE_TYPE_CONVENTIONAL); + + empty[0] = zones[0].cond == BLK_ZONE_COND_EMPTY; + empty[1] = zones[1].cond == BLK_ZONE_COND_EMPTY; + full[0] = zones[0].cond == BLK_ZONE_COND_FULL; + full[1] = zones[1].cond == BLK_ZONE_COND_FULL; + + /* + * Possible states of log buffer zones + * + * Empty[0] In use[0] Full[0] + * Empty[1] * x 0 + * In use[1] 0 x 0 + * Full[1] 1 1 C + * + * Log position: + * *: Special case, no superblock is written + * 0: Use write pointer of zones[0] + * 1: Use write pointer of zones[1] + * C: Compare super blocks from zones[0] and zones[1], use the latest + * one determined by generation + * x: Invalid state + */ + + if (empty[0] && empty[1]) { + /* Special case to distinguish no superblock to read */ + *wp_ret = zones[0].start << SECTOR_SHIFT; + return -ENOENT; + } else if (full[0] && full[1]) { + /* Compare two super blocks */ + struct btrfs_super_block *super[BTRFS_NR_SB_LOG_ZONES]; + int i; + + for (i = 0; i < BTRFS_NR_SB_LOG_ZONES; i++) { + uint64_t bytenr; + + bytenr = ((zones[i].start + zones[i].len) + << SECTOR_SHIFT) - BTRFS_SUPER_INFO_SIZE; + + super[i] = (struct btrfs_super_block *) + blkid_probe_get_buffer(pr, bytenr, BTRFS_SUPER_INFO_SIZE); + if (!super[i]) + return -EIO; + DBG(LOWPROBE, ul_debug("(btrfs) checking #%d zone " + "[start=%" PRIu64", len=%" PRIu64", sb-offset=%" PRIu64"]", + i, (uint64_t) zones[i].start, + (uint64_t) zones[i].len, bytenr)); + } + + if (super[0]->generation > super[1]->generation) + sector = zones[1].start; + else + sector = zones[0].start; + } else if (!full[0] && (empty[1] || full[1])) { + sector = zones[0].wp; + } else if (full[0]) { + sector = zones[1].wp; + } else { + return -EUCLEAN; + } + *wp_ret = sector << SECTOR_SHIFT; + + DBG(LOWPROBE, ul_debug("(btrfs) write pointer: %" PRIu64" sector", sector)); + return 0; +} + +static int sb_log_offset(blkid_probe pr, uint64_t *bytenr_ret) +{ + uint32_t zone_num = 0; + uint32_t zone_size_sector; + struct blk_zone_report *rep; + struct blk_zone *zones; + int ret; + int i; + uint64_t wp; + + + zone_size_sector = pr->zone_size >> SECTOR_SHIFT; + rep = blkdev_get_zonereport(pr->fd, zone_num * zone_size_sector, 2); + if (!rep) { + ret = -errno; + goto out; + } + zones = (struct blk_zone *)(rep + 1); + + /* + * Use the head of the first conventional zone, if the zones + * contain one. + */ + for (i = 0; i < BTRFS_NR_SB_LOG_ZONES; i++) { + if (zones[i].type == BLK_ZONE_TYPE_CONVENTIONAL) { + DBG(LOWPROBE, ul_debug("(btrfs) checking conventional zone")); + *bytenr_ret = zones[i].start << SECTOR_SHIFT; + ret = 0; + goto out; + } + } + + ret = sb_write_pointer(pr, zones, &wp); + if (ret != -ENOENT && ret) { + ret = 1; + goto out; + } + if (ret != -ENOENT) { + if (wp == zones[0].start << SECTOR_SHIFT) + wp = (zones[1].start + zones[1].len) << SECTOR_SHIFT; + wp -= BTRFS_SUPER_INFO_SIZE; + } + *bytenr_ret = wp; + + ret = 0; +out: + free(rep); + + return ret; +} +#endif + +static int probe_btrfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct btrfs_super_block *bfs; + + if (pr->zone_size) { +#ifdef HAVE_LINUX_BLKZONED_H + uint64_t offset = 0; + int ret; + + ret = sb_log_offset(pr, &offset); + if (ret) + return ret; + bfs = (struct btrfs_super_block *) + blkid_probe_get_buffer(pr, offset, + sizeof(struct btrfs_super_block)); +#else + /* Nothing can be done */ + return 1; +#endif + } else { + bfs = blkid_probe_get_sb(pr, mag, struct btrfs_super_block); + } + if (!bfs) + return errno ? -errno : 1; + + if (*bfs->label) + blkid_probe_set_label(pr, + (unsigned char *) bfs->label, + sizeof(bfs->label)); + + blkid_probe_set_uuid(pr, bfs->fsid); + blkid_probe_set_uuid_as(pr, bfs->dev_item.uuid, "UUID_SUB"); + blkid_probe_set_block_size(pr, le32_to_cpu(bfs->sectorsize)); + + return 0; +} + +const struct blkid_idinfo btrfs_idinfo = +{ + .name = "btrfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_btrfs, + .minsz = 1024 * 1024, + .magics = + { + { .magic = "_BHRfS_M", .len = 8, .sboff = 0x40, .kboff = 64 }, + /* For zoned btrfs */ + { .magic = "_BHRfS_M", .len = 8, .sboff = 0x40, + .is_zoned = 1, .zonenum = 0, .kboff_inzone = 0 }, + { .magic = "_BHRfS_M", .len = 8, .sboff = 0x40, + .is_zoned = 1, .zonenum = 1, .kboff_inzone = 0 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/cramfs.c b/libblkid/src/superblocks/cramfs.c new file mode 100644 index 0000000..2c41cc5 --- /dev/null +++ b/libblkid/src/superblocks/cramfs.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct cramfs_super +{ + uint8_t magic[4]; + uint32_t size; + uint32_t flags; + uint32_t future; + uint8_t signature[16]; + struct cramfs_info + { + uint32_t crc; + uint32_t edition; + uint32_t blocks; + uint32_t files; + } __attribute__((packed)) info; + uint8_t name[16]; +} __attribute__((packed)); + +static int probe_cramfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct cramfs_super *cs; + + cs = blkid_probe_get_sb(pr, mag, struct cramfs_super); + if (!cs) + return errno ? -errno : 1; + + blkid_probe_set_label(pr, cs->name, sizeof(cs->name)); + return 0; +} + +const struct blkid_idinfo cramfs_idinfo = +{ + .name = "cramfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_cramfs, + .magics = + { + { .magic = "\x45\x3d\xcd\x28", .len = 4 }, + { .magic = "\x28\xcd\x3d\x45", .len = 4 }, + { NULL } + } +}; + + diff --git a/libblkid/src/superblocks/ddf_raid.c b/libblkid/src/superblocks/ddf_raid.c new file mode 100644 index 0000000..0b82e73 --- /dev/null +++ b/libblkid/src/superblocks/ddf_raid.c @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +/* http://www.snia.org/standards/home */ +#define DDF_GUID_LENGTH 24 +#define DDF_REV_LENGTH 8 +#define DDF_MAGIC 0xDE11DE11 + + +struct ddf_header { + uint32_t signature; + uint32_t crc; + uint8_t guid[DDF_GUID_LENGTH]; + char ddf_rev[8]; /* 01.02.00 */ + uint32_t seq; /* starts at '1' */ + uint32_t timestamp; + uint8_t openflag; + uint8_t foreignflag; + uint8_t enforcegroups; + uint8_t pad0; /* 0xff */ + uint8_t pad1[12]; /* 12 * 0xff */ + /* 64 bytes so far */ + uint8_t header_ext[32]; /* reserved: fill with 0xff */ + uint64_t primary_lba; + uint64_t secondary_lba; + uint8_t type; + uint8_t pad2[3]; /* 0xff */ + uint32_t workspace_len; /* sectors for vendor space - + * at least 32768(sectors) */ + uint64_t workspace_lba; + uint16_t max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */ + uint16_t max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */ + uint16_t max_partitions; /* i.e. max num of configuration + record entries per disk */ + uint16_t config_record_len; /* 1 +ROUNDUP(max_primary_element_entries + *12/512) */ + uint16_t max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */ + uint8_t pad3[54]; /* 0xff */ + /* 192 bytes so far */ + uint32_t controller_section_offset; + uint32_t controller_section_length; + uint32_t phys_section_offset; + uint32_t phys_section_length; + uint32_t virt_section_offset; + uint32_t virt_section_length; + uint32_t config_section_offset; + uint32_t config_section_length; + uint32_t data_section_offset; + uint32_t data_section_length; + uint32_t bbm_section_offset; + uint32_t bbm_section_length; + uint32_t diag_space_offset; + uint32_t diag_space_length; + uint32_t vendor_offset; + uint32_t vendor_length; + /* 256 bytes so far */ + uint8_t pad4[256]; /* 0xff */ +} __attribute__((packed)); + +static int probe_ddf(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + int hdrs[] = { 1, 257 }; + size_t i; + struct ddf_header *ddf = NULL; + char version[DDF_REV_LENGTH + 1]; + uint64_t off = 0, lba; + + if (pr->size < 0x30000) + return 1; + + for (i = 0; i < ARRAY_SIZE(hdrs); i++) { + off = ((pr->size / 0x200) - hdrs[i]) * 0x200; + + ddf = (struct ddf_header *) blkid_probe_get_buffer(pr, + off, + sizeof(struct ddf_header)); + if (!ddf) + return errno ? -errno : 1; + if (ddf->signature == cpu_to_be32(DDF_MAGIC) || + ddf->signature == cpu_to_le32(DDF_MAGIC)) + break; + ddf = NULL; + } + + if (!ddf) + return 1; + + lba = ddf->signature == cpu_to_be32(DDF_MAGIC) ? + be64_to_cpu(ddf->primary_lba) : + le64_to_cpu(ddf->primary_lba); + + if (lba > 0) { + /* check primary header */ + unsigned char *buf; + + buf = blkid_probe_get_buffer(pr, + lba << 9, sizeof(ddf->signature)); + if (!buf) + return errno ? -errno : 1; + + if (memcmp(buf, &ddf->signature, 4) != 0) + return 1; + } + + blkid_probe_strncpy_uuid(pr, ddf->guid, sizeof(ddf->guid)); + + memcpy(version, ddf->ddf_rev, sizeof(ddf->ddf_rev)); + *(version + sizeof(ddf->ddf_rev)) = '\0'; + + if (blkid_probe_set_version(pr, version) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, + sizeof(ddf->signature), + (unsigned char *) &ddf->signature)) + return 1; + return 0; +} + +const struct blkid_idinfo ddfraid_idinfo = { + .name = "ddf_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_ddf, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/drbd.c b/libblkid/src/superblocks/drbd.c new file mode 100644 index 0000000..f360186 --- /dev/null +++ b/libblkid/src/superblocks/drbd.c @@ -0,0 +1,231 @@ +/* + * Copyright (C) 2009 by Bastian Friedrich <bastian.friedrich@collax.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + * + * defines, structs taken from drbd source; file names represent drbd source + * files. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <inttypes.h> +#include <stddef.h> + +#include "superblocks.h" + +/* + * drbd/linux/drbd.h + */ +#define DRBD_MAGIC 0x83740267 + +/* + * user/drbdmeta.c + * We support v08 and v09 + */ +#define DRBD_MD_MAGIC_08 (DRBD_MAGIC+4) +#define DRBD_MD_MAGIC_84_UNCLEAN (DRBD_MAGIC+5) +#define DRBD_MD_MAGIC_09 (DRBD_MAGIC+6) +/* there is no DRBD_MD_MAGIC_09_UNCLEAN */ + +/* + * drbd/linux/drbd.h + */ +enum drbd_uuid_index { + UI_CURRENT, + UI_BITMAP, + UI_HISTORY_START, + UI_HISTORY_END, + UI_SIZE, /* nl-packet: number of dirty bits */ + UI_FLAGS, /* nl-packet: flags */ + UI_EXTENDED_SIZE /* Everything. */ +}; + + +/* + * Used by libblkid to avoid unnecessary padding at the end of the structs and + * too large unused structs in memory. + */ +#define DRBD_MD_OFFSET 4096 + +/* + * user/shared/drbdmeta.c + * Minor modifications wrt. types + */ +struct md_on_disk_08 { + uint64_t la_sect; /* last agreed size. */ + uint64_t uuid[UI_SIZE]; /* UUIDs */ + uint64_t device_uuid; + uint64_t reserved_u64_1; + uint32_t flags; + uint32_t magic; + uint32_t md_size_sect; + int32_t al_offset; /* signed sector offset to this block */ + uint32_t al_nr_extents; /* important for restoring the AL */ + int32_t bm_offset; /* signed sector offset to the bitmap, from here */ + uint32_t bm_bytes_per_bit; + uint32_t reserved_u32[4]; + + /* Unnecessary for libblkid ** + * char reserved[8 * 512 - (8*(UI_SIZE+3)+4*11)]; + */ +}; + +/* + * linux/drbd.h, v9 only + */ +#define DRBD_PEERS_MAX 32 +#define HISTORY_UUIDS DRBD_PEERS_MAX + +/* + * drbd-headers/drbd_meta_data.h + * Minor modifications wrt. types + */ +struct peer_dev_md_on_disk_9 { + uint64_t bitmap_uuid; + uint64_t bitmap_dagtag; + uint32_t flags; + int32_t bitmap_index; + uint32_t reserved_u32[2]; +} __attribute__((packed)); + +struct meta_data_on_disk_9 { + uint64_t effective_size; /* last agreed size */ + uint64_t current_uuid; + uint64_t reserved_u64[4]; /* to have the magic at the same position as in v07, and v08 */ + uint64_t device_uuid; + uint32_t flags; /* MDF */ + uint32_t magic; + uint32_t md_size_sect; + uint32_t al_offset; /* offset to this block */ + uint32_t al_nr_extents; /* important for restoring the AL */ + uint32_t bm_offset; /* offset to the bitmap, from here */ + uint32_t bm_bytes_per_bit; /* BM_BLOCK_SIZE */ + uint32_t la_peer_max_bio_size; /* last peer max_bio_size */ + uint32_t bm_max_peers; + int32_t node_id; + + /* see al_tr_number_to_on_disk_sector() */ + uint32_t al_stripes; + uint32_t al_stripe_size_4k; + + uint32_t reserved_u32[2]; + + struct peer_dev_md_on_disk_9 peers[DRBD_PEERS_MAX]; + uint64_t history_uuids[HISTORY_UUIDS]; + + /* Unnecessary for libblkid ** + * char padding[0] __attribute__((aligned(4096))); + */ +} __attribute__((packed)); + + +static int probe_drbd_84(blkid_probe pr) +{ + struct md_on_disk_08 *md; + off_t off; + + off = pr->size - DRBD_MD_OFFSET; + + /* Small devices cannot be drbd (?) */ + if (pr->size < 0x10000) + return 1; + + md = (struct md_on_disk_08 *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct md_on_disk_08)); + if (!md) + return errno ? -errno : 1; + + if (be32_to_cpu(md->magic) != DRBD_MD_MAGIC_08 && + be32_to_cpu(md->magic) != DRBD_MD_MAGIC_84_UNCLEAN) + return 1; + + /* + * DRBD does not have "real" uuids; the following resembles DRBD's + * notion of uuids (64 bit, see struct above) + */ + blkid_probe_sprintf_uuid(pr, + (unsigned char *) &md->device_uuid, sizeof(md->device_uuid), + "%" PRIx64, be64_to_cpu(md->device_uuid)); + + blkid_probe_set_version(pr, "v08"); + + if (blkid_probe_set_magic(pr, + off + offsetof(struct md_on_disk_08, magic), + sizeof(md->magic), + (unsigned char *) &md->magic)) + return 1; + + return 0; +} + +static int probe_drbd_90(blkid_probe pr) +{ + struct meta_data_on_disk_9 *md; + off_t off; + + off = pr->size - DRBD_MD_OFFSET; + + /* + * Smaller ones are certainly not DRBD9 devices. + * Recent utils even refuse to generate larger ones, + * keep this as a sufficient lower bound. + */ + if (pr->size < 0x10000) + return 1; + + md = (struct meta_data_on_disk_9 *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct meta_data_on_disk_9)); + if (!md) + return errno ? -errno : 1; + + if (be32_to_cpu(md->magic) != DRBD_MD_MAGIC_09) + return 1; + + /* + * DRBD does not have "real" uuids; the following resembles DRBD's + * notion of uuids (64 bit, see struct above) + */ + blkid_probe_sprintf_uuid(pr, + (unsigned char *) &md->device_uuid, sizeof(md->device_uuid), + "%" PRIx64, be64_to_cpu(md->device_uuid)); + + blkid_probe_set_version(pr, "v09"); + + if (blkid_probe_set_magic(pr, + off + offsetof(struct meta_data_on_disk_9, magic), + sizeof(md->magic), + (unsigned char *) &md->magic)) + return 1; + + return 0; +} + +static int probe_drbd(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + int ret; + + ret = probe_drbd_84(pr); + if (ret <= 0) /* success or fatal (-errno) */ + return ret; + + return probe_drbd_90(pr); +} + +const struct blkid_idinfo drbd_idinfo = +{ + .name = "drbd", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_drbd, + .magics = BLKID_NONE_MAGIC +}; + diff --git a/libblkid/src/superblocks/drbdmanage.c b/libblkid/src/superblocks/drbdmanage.c new file mode 100644 index 0000000..d56c414 --- /dev/null +++ b/libblkid/src/superblocks/drbdmanage.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2015 by Philipp Marek <philipp.marek@linbit.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + * + * DRBD is a blocklevel replication solution in the Linux kernel, + * upstream since 2.6.33. (See http://drbd.linbit.com/) + * DRBDmanage is a configuration frontend that assists in + * creating/deleting/modifying DRBD resources across multiple machines + * (a DRBDmanage "cluster"); this file detects its control volume, + * which is replicated (via DRBD 9) on some of the nodes. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <inttypes.h> +#include <stddef.h> + +#include "bitops.h" +#include "superblocks.h" + +struct drbdmanage_hdr { + unsigned char magic[11]; + unsigned char uuid[32]; + unsigned char lf; +} __attribute__ ((packed)); + +struct drbdmanage_pers { + char magic[4]; + uint32_t version_le; +} __attribute__ ((packed)); + + +static const char persistence_magic[4] = { '\x1a', '\xdb', '\x98', '\xa2' }; + + +static int probe_drbdmanage(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct drbdmanage_hdr *hdr; + unsigned char *cp; + struct drbdmanage_pers *prs; + + hdr = (struct drbdmanage_hdr*) + blkid_probe_get_buffer(pr, 0, sizeof(*hdr)); + if (!hdr) + return errno ? -errno : 1; + + for(cp=hdr->uuid; cp<&hdr->lf; cp++) + if (!isxdigit(*cp)) + return 1; + if (hdr->lf != '\n') + return 1; + + if (blkid_probe_strncpy_uuid(pr, + hdr->uuid, sizeof(hdr->uuid))) + return errno ? -errno : 1; + + prs = (struct drbdmanage_pers*) + blkid_probe_get_buffer(pr, 0x1000, sizeof(*prs)); + if (!prs) + return errno ? -errno : 1; + + if (memcmp(prs->magic, persistence_magic, sizeof(prs->magic)) == 0 && + blkid_probe_sprintf_version(pr, "%d", be32_to_cpu(prs->version_le)) != 0) + return errno ? -errno : 1; + + return 0; +} + + +const struct blkid_idinfo drbdmanage_idinfo = +{ + .name = "drbdmanage_control_volume", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_drbdmanage, + .minsz = 64 * 1024, + .magics = { + { .magic = "$DRBDmgr=q", .len = 10, .sboff = 0 }, + { NULL } + }, +}; + diff --git a/libblkid/src/superblocks/drbdproxy_datalog.c b/libblkid/src/superblocks/drbdproxy_datalog.c new file mode 100644 index 0000000..9a4c7db --- /dev/null +++ b/libblkid/src/superblocks/drbdproxy_datalog.c @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2011 by Philipp Marek <philipp.marek@linbit.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <inttypes.h> +#include <stddef.h> + +#include "superblocks.h" + + +struct log_header_t { + uint64_t magic; + uint64_t version; + + unsigned char uuid[16]; + + uint64_t flags; +} __attribute__((packed)); + + +static int probe_drbdproxy_datalog(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct log_header_t *lh; + + lh = (struct log_header_t *) blkid_probe_get_buffer(pr, 0, sizeof(*lh)); + if (!lh) + return errno ? -errno : 1; + + blkid_probe_set_uuid(pr, lh->uuid); + blkid_probe_sprintf_version(pr, "v%"PRIu64, le64_to_cpu(lh->version)); + + return 0; +} + +const struct blkid_idinfo drbdproxy_datalog_idinfo = +{ + .name = "drbdproxy_datalog", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_drbdproxy_datalog, + .minsz = 16*1024, + .magics = + { + { .magic = "DRBDdlh*", .len = 8, .sboff = 0, .kboff = 0 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/erofs.c b/libblkid/src/superblocks/erofs.c new file mode 100644 index 0000000..0e7b422 --- /dev/null +++ b/libblkid/src/superblocks/erofs.c @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2020 Gao Xiang + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License + */ +#include <stddef.h> +#include <string.h> + +#include "superblocks.h" + +#define EROFS_SUPER_OFFSET 1024 +#define EROFS_SB_KBOFF (EROFS_SUPER_OFFSET >> 10) + +#define EROFS_SUPER_MAGIC_V1 "\xe2\xe1\xf5\xe0" +#define EROFS_MAGIC_OFF 0 + +/* All in little-endian */ +struct erofs_super_block { + uint32_t magic; + uint32_t checksum; + uint32_t feature_compat; + uint8_t blkszbits; + uint8_t reserved; + + uint16_t root_nid; + uint64_t inos; + + uint64_t build_time; + uint32_t build_time_nsec; + uint32_t blocks; + uint32_t meta_blkaddr; + uint32_t xattr_blkaddr; + uint8_t uuid[16]; + uint8_t volume_name[16]; + uint32_t feature_incompat; + uint8_t reserved2[44]; +}; + +static int probe_erofs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct erofs_super_block *sb; + + sb = blkid_probe_get_sb(pr, mag, struct erofs_super_block); + if (!sb) + return errno ? -errno : BLKID_PROBE_NONE; + + if (sb->volume_name[0]) + blkid_probe_set_label(pr, (unsigned char *)sb->volume_name, + sizeof(sb->volume_name)); + + blkid_probe_set_uuid(pr, sb->uuid); + + if (sb->blkszbits < 32) + blkid_probe_set_block_size(pr, 1U << sb->blkszbits); + return BLKID_PROBE_OK; +} + +const struct blkid_idinfo erofs_idinfo = +{ + .name = "erofs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_erofs, + .magics = + { + { + .magic = EROFS_SUPER_MAGIC_V1, + .len = 4, + .kboff = EROFS_SB_KBOFF, + .sboff = EROFS_MAGIC_OFF, + }, { NULL } + } +}; diff --git a/libblkid/src/superblocks/exfat.c b/libblkid/src/superblocks/exfat.c new file mode 100644 index 0000000..f586ec7 --- /dev/null +++ b/libblkid/src/superblocks/exfat.c @@ -0,0 +1,157 @@ +/* + * Copyright (C) 2010 Andrew Nayenko <resver@gmail.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include "superblocks.h" + +struct exfat_super_block { + uint8_t jump[3]; + uint8_t oem_name[8]; + uint8_t __unused1[53]; + uint64_t block_start; + uint64_t block_count; + uint32_t fat_block_start; + uint32_t fat_block_count; + uint32_t cluster_block_start; + uint32_t cluster_count; + uint32_t rootdir_cluster; + uint8_t volume_serial[4]; + struct { + uint8_t vermin; + uint8_t vermaj; + } version; + uint16_t volume_state; + uint8_t block_bits; + uint8_t bpc_bits; + uint8_t fat_count; + uint8_t drive_no; + uint8_t allocated_percent; +} __attribute__((__packed__)); + +struct exfat_entry_label { + uint8_t type; + uint8_t length; + uint8_t name[22]; + uint8_t reserved[8]; +} __attribute__((__packed__)); + +#define BLOCK_SIZE(sb) (1u << (sb)->block_bits) +#define CLUSTER_SIZE(sb) (BLOCK_SIZE(sb) << (sb)->bpc_bits) +#define EXFAT_FIRST_DATA_CLUSTER 2 +#define EXFAT_LAST_DATA_CLUSTER 0xffffff6 +#define EXFAT_ENTRY_SIZE 32 + +#define EXFAT_ENTRY_EOD 0x00 +#define EXFAT_ENTRY_LABEL 0x83 + +static uint64_t block_to_offset(const struct exfat_super_block *sb, + uint64_t block) +{ + return block << sb->block_bits; +} + +static uint64_t cluster_to_block(const struct exfat_super_block *sb, + uint32_t cluster) +{ + return le32_to_cpu(sb->cluster_block_start) + + ((uint64_t) (cluster - EXFAT_FIRST_DATA_CLUSTER) + << sb->bpc_bits); +} + +static uint64_t cluster_to_offset(const struct exfat_super_block *sb, + uint32_t cluster) +{ + return block_to_offset(sb, cluster_to_block(sb, cluster)); +} + +static uint32_t next_cluster(blkid_probe pr, + const struct exfat_super_block *sb, uint32_t cluster) +{ + uint32_t *next; + uint64_t fat_offset; + + fat_offset = block_to_offset(sb, le32_to_cpu(sb->fat_block_start)) + + (uint64_t) cluster * sizeof(cluster); + next = (uint32_t *) blkid_probe_get_buffer(pr, fat_offset, + sizeof(uint32_t)); + if (!next) + return 0; + return le32_to_cpu(*next); +} + +static struct exfat_entry_label *find_label(blkid_probe pr, + const struct exfat_super_block *sb) +{ + uint32_t cluster = le32_to_cpu(sb->rootdir_cluster); + uint64_t offset = cluster_to_offset(sb, cluster); + uint8_t *entry; + const size_t max_iter = 10000; + size_t i = 0; + + for (; i < max_iter; i++) { + entry = (uint8_t *) blkid_probe_get_buffer(pr, offset, + EXFAT_ENTRY_SIZE); + if (!entry) + return NULL; + if (entry[0] == EXFAT_ENTRY_EOD) + return NULL; + if (entry[0] == EXFAT_ENTRY_LABEL) + return (struct exfat_entry_label *) entry; + + offset += EXFAT_ENTRY_SIZE; + if (offset % CLUSTER_SIZE(sb) == 0) { + cluster = next_cluster(pr, sb, cluster); + if (cluster < EXFAT_FIRST_DATA_CLUSTER) + return NULL; + if (cluster > EXFAT_LAST_DATA_CLUSTER) + return NULL; + offset = cluster_to_offset(sb, cluster); + } + } + + return NULL; +} + +static int probe_exfat(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct exfat_super_block *sb; + struct exfat_entry_label *label; + + sb = blkid_probe_get_sb(pr, mag, struct exfat_super_block); + if (!sb || !CLUSTER_SIZE(sb)) + return errno ? -errno : BLKID_PROBE_NONE; + + label = find_label(pr, sb); + if (label) + blkid_probe_set_utf8label(pr, label->name, + min((size_t) label->length * 2, sizeof(label->name)), + UL_ENCODE_UTF16LE); + else if (errno) + return -errno; + + blkid_probe_sprintf_uuid(pr, sb->volume_serial, 4, + "%02hhX%02hhX-%02hhX%02hhX", + sb->volume_serial[3], sb->volume_serial[2], + sb->volume_serial[1], sb->volume_serial[0]); + + blkid_probe_sprintf_version(pr, "%u.%u", + sb->version.vermaj, sb->version.vermin); + + blkid_probe_set_block_size(pr, BLOCK_SIZE(sb)); + + return BLKID_PROBE_OK; +} + +const struct blkid_idinfo exfat_idinfo = +{ + .name = "exfat", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_exfat, + .magics = + { + { .magic = "EXFAT ", .len = 8, .sboff = 3 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/exfs.c b/libblkid/src/superblocks/exfs.c new file mode 100644 index 0000000..e0eafaf --- /dev/null +++ b/libblkid/src/superblocks/exfs.c @@ -0,0 +1,191 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2013 Eric Sandeen <sandeen@redhat.com> + * Copyright (C) 2017 Hewlett Packard Enterprise Development LP + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct exfs_super_block { + uint32_t sb_magicnum; /* magic number == EXFS_SB_MAGIC */ + uint32_t sb_blocksize; /* logical block size, bytes */ + uint64_t sb_dblocks; /* number of data blocks */ + uint64_t sb_rblocks; /* number of realtime blocks */ + uint64_t sb_rextents; /* number of realtime extents */ + unsigned char sb_uuid[16]; /* file system unique id */ + uint64_t sb_logstart; /* starting block of log if internal */ + uint64_t sb_rootino; /* root inode number */ + uint64_t sb_rbmino; /* bitmap inode for realtime extents */ + uint64_t sb_rsumino; /* summary inode for rt bitmap */ + uint32_t sb_rextsize; /* realtime extent size, blocks */ + uint32_t sb_agblocks; /* size of an allocation group */ + uint32_t sb_agcount; /* number of allocation groups */ + uint32_t sb_rbmblocks; /* number of rt bitmap blocks */ + uint32_t sb_logblocks; /* number of log blocks */ + + uint16_t sb_versionnum; /* header version == EXFS_SB_VERSION */ + uint16_t sb_sectsize; /* volume sector size, bytes */ + uint16_t sb_inodesize; /* inode size, bytes */ + uint16_t sb_inopblock; /* inodes per block */ + char sb_fname[12]; /* file system name */ + uint8_t sb_blocklog; /* log2 of sb_blocksize */ + uint8_t sb_sectlog; /* log2 of sb_sectsize */ + uint8_t sb_inodelog; /* log2 of sb_inodesize */ + uint8_t sb_inopblog; /* log2 of sb_inopblock */ + uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */ + uint8_t sb_rextslog; /* log2 of sb_rextents */ + uint8_t sb_inprogress; /* mkfs is in progress, don't mount */ + uint8_t sb_imax_pct; /* max % of fs for inode space */ + /* statistics */ + uint64_t sb_icount; /* allocated inodes */ + uint64_t sb_ifree; /* free inodes */ + uint64_t sb_fdblocks; /* free data blocks */ + uint64_t sb_frextents; /* free realtime extents */ + + /* this is not all... but enough for libblkid */ + +} __attribute__((packed)); + +#define EXFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ +#define EXFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ +#define EXFS_MIN_BLOCKSIZE (1 << EXFS_MIN_BLOCKSIZE_LOG) +#define EXFS_MAX_BLOCKSIZE (1 << EXFS_MAX_BLOCKSIZE_LOG) +#define EXFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ +#define EXFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ +#define EXFS_MIN_SECTORSIZE (1 << EXFS_MIN_SECTORSIZE_LOG) +#define EXFS_MAX_SECTORSIZE (1 << EXFS_MAX_SECTORSIZE_LOG) + +#define EXFS_DINODE_MIN_LOG 8 +#define EXFS_DINODE_MAX_LOG 11 +#define EXFS_DINODE_MIN_SIZE (1 << EXFS_DINODE_MIN_LOG) +#define EXFS_DINODE_MAX_SIZE (1 << EXFS_DINODE_MAX_LOG) + +#define EXFS_MAX_RTEXTSIZE (1024 * 1024 * 1024) /* 1GB */ +#define EXFS_DFL_RTEXTSIZE (64 * 1024) /* 64kB */ +#define EXFS_MIN_RTEXTSIZE (4 * 1024) /* 4kB */ + +#define EXFS_MIN_AG_BLOCKS 64 +#define EXFS_MAX_DBLOCKS(s) ((uint64_t)(s)->sb_agcount * (s)->sb_agblocks) +#define EXFS_MIN_DBLOCKS(s) ((uint64_t)((s)->sb_agcount - 1) * \ + (s)->sb_agblocks + EXFS_MIN_AG_BLOCKS) + + +static void sb_from_disk(struct exfs_super_block *from, + struct exfs_super_block *to) +{ + + to->sb_magicnum = be32_to_cpu(from->sb_magicnum); + to->sb_blocksize = be32_to_cpu(from->sb_blocksize); + to->sb_dblocks = be64_to_cpu(from->sb_dblocks); + to->sb_rblocks = be64_to_cpu(from->sb_rblocks); + to->sb_rextents = be64_to_cpu(from->sb_rextents); + to->sb_logstart = be64_to_cpu(from->sb_logstart); + to->sb_rootino = be64_to_cpu(from->sb_rootino); + to->sb_rbmino = be64_to_cpu(from->sb_rbmino); + to->sb_rsumino = be64_to_cpu(from->sb_rsumino); + to->sb_rextsize = be32_to_cpu(from->sb_rextsize); + to->sb_agblocks = be32_to_cpu(from->sb_agblocks); + to->sb_agcount = be32_to_cpu(from->sb_agcount); + to->sb_rbmblocks = be32_to_cpu(from->sb_rbmblocks); + to->sb_logblocks = be32_to_cpu(from->sb_logblocks); + to->sb_versionnum = be16_to_cpu(from->sb_versionnum); + to->sb_sectsize = be16_to_cpu(from->sb_sectsize); + to->sb_inodesize = be16_to_cpu(from->sb_inodesize); + to->sb_inopblock = be16_to_cpu(from->sb_inopblock); + to->sb_blocklog = from->sb_blocklog; + to->sb_sectlog = from->sb_sectlog; + to->sb_inodelog = from->sb_inodelog; + to->sb_inopblog = from->sb_inopblog; + to->sb_agblklog = from->sb_agblklog; + to->sb_rextslog = from->sb_rextslog; + to->sb_inprogress = from->sb_inprogress; + to->sb_imax_pct = from->sb_imax_pct; + to->sb_icount = be64_to_cpu(from->sb_icount); + to->sb_ifree = be64_to_cpu(from->sb_ifree); + to->sb_fdblocks = be64_to_cpu(from->sb_fdblocks); + to->sb_frextents = be64_to_cpu(from->sb_frextents); +} + +static int exfs_verify_sb(struct exfs_super_block *ondisk) +{ + struct exfs_super_block sb, *sbp = &sb; + + /* beXX_to_cpu(), but don't convert UUID and fsname! */ + sb_from_disk(ondisk, sbp); + + /* sanity checks, we don't want to rely on magic string only */ + if (sbp->sb_agcount <= 0 || + sbp->sb_sectsize < EXFS_MIN_SECTORSIZE || + sbp->sb_sectsize > EXFS_MAX_SECTORSIZE || + sbp->sb_sectlog < EXFS_MIN_SECTORSIZE_LOG || + sbp->sb_sectlog > EXFS_MAX_SECTORSIZE_LOG || + sbp->sb_sectsize != (1 << sbp->sb_sectlog) || + sbp->sb_blocksize < EXFS_MIN_BLOCKSIZE || + sbp->sb_blocksize > EXFS_MAX_BLOCKSIZE || + sbp->sb_blocklog < EXFS_MIN_BLOCKSIZE_LOG || + sbp->sb_blocklog > EXFS_MAX_BLOCKSIZE_LOG || + sbp->sb_blocksize != (1ULL << sbp->sb_blocklog) || + sbp->sb_inodesize < EXFS_DINODE_MIN_SIZE || + sbp->sb_inodesize > EXFS_DINODE_MAX_SIZE || + sbp->sb_inodelog < EXFS_DINODE_MIN_LOG || + sbp->sb_inodelog > EXFS_DINODE_MAX_LOG || + sbp->sb_inodesize != (1 << sbp->sb_inodelog) || + (sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) || + (sbp->sb_rextsize * sbp->sb_blocksize > EXFS_MAX_RTEXTSIZE) || + (sbp->sb_rextsize * sbp->sb_blocksize < EXFS_MIN_RTEXTSIZE) || + (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */) || + sbp->sb_dblocks == 0 || + sbp->sb_dblocks > EXFS_MAX_DBLOCKS(sbp) || + sbp->sb_dblocks < EXFS_MIN_DBLOCKS(sbp)) + return 0; + return 1; +} + +static int probe_exfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct exfs_super_block *xs; + + xs = blkid_probe_get_sb(pr, mag, struct exfs_super_block); + if (!xs) + return errno ? -errno : 1; + + if (!exfs_verify_sb(xs)) + return 1; + + if (*xs->sb_fname != '\0') + blkid_probe_set_label(pr, (unsigned char *) xs->sb_fname, + sizeof(xs->sb_fname)); + + blkid_probe_set_uuid(pr, xs->sb_uuid); + + blkid_probe_set_block_size(pr, be32_to_cpu(xs->sb_blocksize)); + + return 0; +} + +const struct blkid_idinfo exfs_idinfo = +{ + .name = "exfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_exfs, + .magics = + { + { .magic = "EXFS", .len = 4 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/ext.c b/libblkid/src/superblocks/ext.c new file mode 100644 index 0000000..3870522 --- /dev/null +++ b/libblkid/src/superblocks/ext.c @@ -0,0 +1,368 @@ +/* + * Copyright (C) 1999, 2001 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> +#ifdef __linux__ +#include <sys/utsname.h> +#endif +#include <time.h> + +#include "superblocks.h" + +struct ext2_super_block { + uint32_t s_inodes_count; + uint32_t s_blocks_count; + uint32_t s_r_blocks_count; + uint32_t s_free_blocks_count; + uint32_t s_free_inodes_count; + uint32_t s_first_data_block; + uint32_t s_log_block_size; + uint32_t s_dummy3[7]; + unsigned char s_magic[2]; + uint16_t s_state; + uint16_t s_errors; + uint16_t s_minor_rev_level; + uint32_t s_lastcheck; + uint32_t s_checkinterval; + uint32_t s_creator_os; + uint32_t s_rev_level; + uint16_t s_def_resuid; + uint16_t s_def_resgid; + uint32_t s_first_ino; + uint16_t s_inode_size; + uint16_t s_block_group_nr; + uint32_t s_feature_compat; + uint32_t s_feature_incompat; + uint32_t s_feature_ro_compat; + unsigned char s_uuid[16]; + char s_volume_name[16]; + char s_last_mounted[64]; + uint32_t s_algorithm_usage_bitmap; + uint8_t s_prealloc_blocks; + uint8_t s_prealloc_dir_blocks; + uint16_t s_reserved_gdt_blocks; + uint8_t s_journal_uuid[16]; + uint32_t s_journal_inum; + uint32_t s_journal_dev; + uint32_t s_last_orphan; + uint32_t s_hash_seed[4]; + uint8_t s_def_hash_version; + uint8_t s_jnl_backup_type; + uint16_t s_reserved_word_pad; + uint32_t s_default_mount_opts; + uint32_t s_first_meta_bg; + uint32_t s_mkfs_time; + uint32_t s_jnl_blocks[17]; + uint32_t s_blocks_count_hi; + uint32_t s_r_blocks_count_hi; + uint32_t s_free_blocks_hi; + uint16_t s_min_extra_isize; + uint16_t s_want_extra_isize; + uint32_t s_flags; + uint16_t s_raid_stride; + uint16_t s_mmp_interval; + uint64_t s_mmp_block; + uint32_t s_raid_stripe_width; + uint32_t s_reserved[163]; +} __attribute__((packed)); + +/* magic string */ +#define EXT_SB_MAGIC "\123\357" +/* supper block offset */ +#define EXT_SB_OFF 0x400 +/* supper block offset in kB */ +#define EXT_SB_KBOFF (EXT_SB_OFF >> 10) +/* magic string offset within super block */ +#define EXT_MAG_OFF 0x38 + + + +/* for s_flags */ +#define EXT2_FLAGS_TEST_FILESYS 0x0004 + +/* for s_feature_compat */ +#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 + +/* for s_feature_ro_compat */ +#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 +#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 +#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 +#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 +#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 +#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 +#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 + +/* for s_feature_incompat */ +#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 +#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 +#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 +#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 +#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */ +#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 +#define EXT4_FEATURE_INCOMPAT_MMP 0x0100 +#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 + +#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ + EXT2_FEATURE_INCOMPAT_META_BG) +#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP +#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP + +#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ + EXT3_FEATURE_INCOMPAT_RECOVER| \ + EXT2_FEATURE_INCOMPAT_META_BG) +#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP +#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP + +/* + * Starting in 2.6.29, ext4 can be used to support filesystems + * without a journal. + */ +#define EXT4_SUPPORTS_EXT2 KERNEL_VERSION(2, 6, 29) + +/* + * reads superblock and returns: + * fc = feature_compat + * fi = feature_incompat + * frc = feature_ro_compat + */ +static struct ext2_super_block *ext_get_super( + blkid_probe pr, uint32_t *fc, uint32_t *fi, uint32_t *frc) +{ + struct ext2_super_block *es; + + es = (struct ext2_super_block *) + blkid_probe_get_buffer(pr, EXT_SB_OFF, 0x200); + if (!es) + return NULL; + if (fc) + *fc = le32_to_cpu(es->s_feature_compat); + if (fi) + *fi = le32_to_cpu(es->s_feature_incompat); + if (frc) + *frc = le32_to_cpu(es->s_feature_ro_compat); + + return es; +} + +static void ext_get_info(blkid_probe pr, int ver, struct ext2_super_block *es) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + + DBG(PROBE, ul_debug("ext2_sb.compat = %08X:%08X:%08X", + le32_to_cpu(es->s_feature_compat), + le32_to_cpu(es->s_feature_incompat), + le32_to_cpu(es->s_feature_ro_compat))); + + if (*es->s_volume_name != '\0') + blkid_probe_set_label(pr, (unsigned char *) es->s_volume_name, + sizeof(es->s_volume_name)); + blkid_probe_set_uuid(pr, es->s_uuid); + + if (le32_to_cpu(es->s_feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) + blkid_probe_set_uuid_as(pr, es->s_journal_uuid, "EXT_JOURNAL"); + + if (ver != 2 && (chn->flags & BLKID_SUBLKS_SECTYPE) && + ((le32_to_cpu(es->s_feature_incompat) & EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0)) + blkid_probe_set_value(pr, "SEC_TYPE", + (unsigned char *) "ext2", + sizeof("ext2")); + + blkid_probe_sprintf_version(pr, "%u.%u", + le32_to_cpu(es->s_rev_level), + le16_to_cpu(es->s_minor_rev_level)); + + if (le32_to_cpu(es->s_log_block_size) < 32) + blkid_probe_set_block_size(pr, 1024U << le32_to_cpu(es->s_log_block_size)); +} + + +static int probe_jbd(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct ext2_super_block *es; + uint32_t fi; + + es = ext_get_super(pr, NULL, &fi, NULL); + if (!es) + return errno ? -errno : 1; + if (!(fi & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) + return 1; + + ext_get_info(pr, 2, es); + blkid_probe_set_uuid_as(pr, es->s_uuid, "LOGUUID"); + + return 0; +} + +static int probe_ext2(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct ext2_super_block *es; + uint32_t fc, frc, fi; + + es = ext_get_super(pr, &fc, &fi, &frc); + if (!es) + return errno ? -errno : 1; + + /* Distinguish between ext3 and ext2 */ + if (fc & EXT3_FEATURE_COMPAT_HAS_JOURNAL) + return 1; + + /* Any features which ext2 doesn't understand */ + if ((frc & EXT2_FEATURE_RO_COMPAT_UNSUPPORTED) || + (fi & EXT2_FEATURE_INCOMPAT_UNSUPPORTED)) + return 1; + + ext_get_info(pr, 2, es); + return 0; +} + +static int probe_ext3(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct ext2_super_block *es; + uint32_t fc, frc, fi; + + es = ext_get_super(pr, &fc, &fi, &frc); + if (!es) + return errno ? -errno : 1; + + /* ext3 requires journal */ + if (!(fc & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) + return 1; + + /* Any features which ext3 doesn't understand */ + if ((frc & EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) || + (fi & EXT3_FEATURE_INCOMPAT_UNSUPPORTED)) + return 1; + + ext_get_info(pr, 3, es); + return 0; +} + + +static int probe_ext4dev(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct ext2_super_block *es; + uint32_t fc, frc, fi; + + es = ext_get_super(pr, &fc, &fi, &frc); + if (!es) + return errno ? -errno : 1; + + /* Distinguish from jbd */ + if (fi & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) + return 1; + + if (!(le32_to_cpu(es->s_flags) & EXT2_FLAGS_TEST_FILESYS)) + return 1; + + ext_get_info(pr, 4, es); + return 0; +} + +static int probe_ext4(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct ext2_super_block *es; + uint32_t fc, frc, fi; + + es = ext_get_super(pr, &fc, &fi, &frc); + if (!es) + return errno ? -errno : 1; + + /* Distinguish from jbd */ + if (fi & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) + return 1; + + /* Ext4 has at least one feature which ext3 doesn't understand */ + if (!(frc & EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) && + !(fi & EXT3_FEATURE_INCOMPAT_UNSUPPORTED)) + return 1; + + /* + * If the filesystem is a OK for use by in-development + * filesystem code, and ext4dev is supported or ext4 is not + * supported, then don't call ourselves ext4, so we can redo + * the detection and mark the filesystem as ext4dev. + * + * If the filesystem is marked as in use by production + * filesystem, then it can only be used by ext4 and NOT by + * ext4dev. + */ + if (le32_to_cpu(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) + return 1; + + ext_get_info(pr, 4, es); + return 0; +} + +#define BLKID_EXT_MAGICS \ + { \ + { \ + .magic = EXT_SB_MAGIC, \ + .len = sizeof(EXT_SB_MAGIC) - 1, \ + .kboff = EXT_SB_KBOFF, \ + .sboff = EXT_MAG_OFF \ + }, \ + { NULL } \ + } + +const struct blkid_idinfo jbd_idinfo = +{ + .name = "jbd", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_jbd, + .magics = BLKID_EXT_MAGICS +}; + +const struct blkid_idinfo ext2_idinfo = +{ + .name = "ext2", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ext2, + .magics = BLKID_EXT_MAGICS +}; + +const struct blkid_idinfo ext3_idinfo = +{ + .name = "ext3", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ext3, + .magics = BLKID_EXT_MAGICS +}; + +const struct blkid_idinfo ext4_idinfo = +{ + .name = "ext4", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ext4, + .magics = BLKID_EXT_MAGICS +}; + +const struct blkid_idinfo ext4dev_idinfo = +{ + .name = "ext4dev", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ext4dev, + .magics = BLKID_EXT_MAGICS +}; + diff --git a/libblkid/src/superblocks/f2fs.c b/libblkid/src/superblocks/f2fs.c new file mode 100644 index 0000000..aed93e2 --- /dev/null +++ b/libblkid/src/superblocks/f2fs.c @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2013 Alejandro Martinez Ruiz <alex@nowcomputing.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License + */ + +#include <stddef.h> +#include <string.h> + +#include "superblocks.h" + +#define F2FS_MAGIC "\x10\x20\xF5\xF2" +#define F2FS_MAGIC_OFF 0 +#define F2FS_UUID_SIZE 16 +#define F2FS_LABEL_SIZE 512 +#define F2FS_SB1_OFF 0x400 +#define F2FS_SB1_KBOFF (F2FS_SB1_OFF >> 10) +#define F2FS_SB2_OFF 0x1400 +#define F2FS_SB2_KBOFF (F2FS_SB2_OFF >> 10) + +struct f2fs_super_block { /* According to version 1.1 */ +/* 0x00 */ uint32_t magic; /* Magic Number */ +/* 0x04 */ uint16_t major_ver; /* Major Version */ +/* 0x06 */ uint16_t minor_ver; /* Minor Version */ +/* 0x08 */ uint32_t log_sectorsize; /* log2 sector size in bytes */ +/* 0x0C */ uint32_t log_sectors_per_block; /* log2 # of sectors per block */ +/* 0x10 */ uint32_t log_blocksize; /* log2 block size in bytes */ +/* 0x14 */ uint32_t log_blocks_per_seg; /* log2 # of blocks per segment */ +/* 0x18 */ uint32_t segs_per_sec; /* # of segments per section */ +/* 0x1C */ uint32_t secs_per_zone; /* # of sections per zone */ +/* 0x20 */ uint32_t checksum_offset; /* checksum offset inside super block */ +/* 0x24 */ uint64_t block_count; /* total # of user blocks */ +/* 0x2C */ uint32_t section_count; /* total # of sections */ +/* 0x30 */ uint32_t segment_count; /* total # of segments */ +/* 0x34 */ uint32_t segment_count_ckpt; /* # of segments for checkpoint */ +/* 0x38 */ uint32_t segment_count_sit; /* # of segments for SIT */ +/* 0x3C */ uint32_t segment_count_nat; /* # of segments for NAT */ +/* 0x40 */ uint32_t segment_count_ssa; /* # of segments for SSA */ +/* 0x44 */ uint32_t segment_count_main; /* # of segments for main area */ +/* 0x48 */ uint32_t segment0_blkaddr; /* start block address of segment 0 */ +/* 0x4C */ uint32_t cp_blkaddr; /* start block address of checkpoint */ +/* 0x50 */ uint32_t sit_blkaddr; /* start block address of SIT */ +/* 0x54 */ uint32_t nat_blkaddr; /* start block address of NAT */ +/* 0x58 */ uint32_t ssa_blkaddr; /* start block address of SSA */ +/* 0x5C */ uint32_t main_blkaddr; /* start block address of main area */ +/* 0x60 */ uint32_t root_ino; /* root inode number */ +/* 0x64 */ uint32_t node_ino; /* node inode number */ +/* 0x68 */ uint32_t meta_ino; /* meta inode number */ +/* 0x6C */ uint8_t uuid[F2FS_UUID_SIZE]; /* 128-bit uuid for volume */ +/* 0x7C */ uint16_t volume_name[F2FS_LABEL_SIZE]; /* volume name */ +#if 0 +/* 0x47C */ uint32_t extension_count; /* # of extensions below */ +/* 0x480 */ uint8_t extension_list[64][8]; /* extension array */ +#endif +} __attribute__((packed)); + +static int probe_f2fs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct f2fs_super_block *sb; + uint16_t vermaj, vermin; + + sb = blkid_probe_get_sb(pr, mag, struct f2fs_super_block); + if (!sb) + return errno ? -errno : 1; + + vermaj = le16_to_cpu(sb->major_ver); + vermin = le16_to_cpu(sb->minor_ver); + + /* For version 1.0 we cannot know the correct sb structure */ + if (vermaj == 1 && vermin == 0) + return 0; + + if (*((unsigned char *) sb->volume_name)) + blkid_probe_set_utf8label(pr, (unsigned char *) sb->volume_name, + sizeof(sb->volume_name), + UL_ENCODE_UTF16LE); + + blkid_probe_set_uuid(pr, sb->uuid); + blkid_probe_sprintf_version(pr, "%u.%u", vermaj, vermin); + if (le32_to_cpu(sb->log_blocksize) < 32) + blkid_probe_set_block_size(pr, 1U << le32_to_cpu(sb->log_blocksize)); + return 0; +} + +const struct blkid_idinfo f2fs_idinfo = +{ + .name = "f2fs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_f2fs, + .magics = + { + { + .magic = F2FS_MAGIC, + .len = 4, + .kboff = F2FS_SB1_KBOFF, + .sboff = F2FS_MAGIC_OFF + }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/gfs.c b/libblkid/src/superblocks/gfs.c new file mode 100644 index 0000000..37a74b1 --- /dev/null +++ b/libblkid/src/superblocks/gfs.c @@ -0,0 +1,140 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +/* Common gfs/gfs2 constants: */ +#define GFS_LOCKNAME_LEN 64 + +/* gfs1 constants: */ +#define GFS_FORMAT_FS 1309 +#define GFS_FORMAT_MULTI 1401 + +struct gfs2_meta_header { + uint32_t mh_magic; + uint32_t mh_type; + uint64_t __pad0; /* Was generation number in gfs1 */ + uint32_t mh_format; + uint32_t __pad1; /* Was incarnation number in gfs1 */ +}; + +struct gfs2_inum { + uint64_t no_formal_ino; + uint64_t no_addr; +}; + +struct gfs2_sb { + struct gfs2_meta_header sb_header; + + uint32_t sb_fs_format; + uint32_t sb_multihost_format; + uint32_t __pad0; /* Was superblock flags in gfs1 */ + + uint32_t sb_bsize; + uint32_t sb_bsize_shift; + uint32_t __pad1; /* Was journal segment size in gfs1 */ + + struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ + struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */ + struct gfs2_inum sb_root_dir; + + char sb_lockproto[GFS_LOCKNAME_LEN]; + char sb_locktable[GFS_LOCKNAME_LEN]; + + struct gfs2_inum __pad3; /* Was quota inode in gfs1 */ + struct gfs2_inum __pad4; /* Was license inode in gfs1 */ + uint8_t sb_uuid[16]; /* The UUID maybe 0 for backwards compat */ +} __attribute__((packed)); + + + +static int probe_gfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct gfs2_sb *sbd; + + sbd = blkid_probe_get_sb(pr, mag, struct gfs2_sb); + if (!sbd) + return errno ? -errno : 1; + + if (be32_to_cpu(sbd->sb_fs_format) == GFS_FORMAT_FS && + be32_to_cpu(sbd->sb_multihost_format) == GFS_FORMAT_MULTI) + { + if (*sbd->sb_locktable) + blkid_probe_set_label(pr, + (unsigned char *) sbd->sb_locktable, + sizeof(sbd->sb_locktable)); + + blkid_probe_set_uuid(pr, sbd->sb_uuid); + return 0; + } + + return 1; +} + +static inline int gfs2_format_is_valid(uint32_t format) +{ + return (format >= 1800 && format < 1900); +} +static inline int gfs2_multiformat_is_valid(uint32_t multi) +{ + return (multi >= 1900 && multi < 2000); +} + +static int probe_gfs2(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct gfs2_sb *sbd; + + sbd = blkid_probe_get_sb(pr, mag, struct gfs2_sb); + if (!sbd) + return errno ? -errno : 1; + + if (gfs2_format_is_valid(be32_to_cpu(sbd->sb_fs_format)) && + gfs2_multiformat_is_valid(be32_to_cpu(sbd->sb_multihost_format))) + { + if (*sbd->sb_locktable) + blkid_probe_set_label(pr, + (unsigned char *) sbd->sb_locktable, + sizeof(sbd->sb_locktable)); + blkid_probe_set_uuid(pr, sbd->sb_uuid); + blkid_probe_set_version(pr, "1"); + blkid_probe_set_block_size(pr, be32_to_cpu(sbd->sb_bsize)); + return 0; + } + return 1; +} + +const struct blkid_idinfo gfs_idinfo = +{ + .name = "gfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_gfs, + .minsz = 32 * 1024 * 1024, /* minimal size of GFS journal */ + .magics = + { + { .magic = "\x01\x16\x19\x70", .len = 4, .kboff = 64 }, + { NULL } + } +}; + +const struct blkid_idinfo gfs2_idinfo = +{ + .name = "gfs2", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_gfs2, + .minsz = 32 * 1024 * 1024, /* minimal size of GFS journal */ + .magics = + { + { .magic = "\x01\x16\x19\x70", .len = 4, .kboff = 64 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/hfs.c b/libblkid/src/superblocks/hfs.c new file mode 100644 index 0000000..fceab95 --- /dev/null +++ b/libblkid/src/superblocks/hfs.c @@ -0,0 +1,340 @@ +/* + * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <inttypes.h> + +#include "superblocks.h" +#include "md5.h" + +/* HFS / HFS+ */ +struct hfs_finder_info { + uint32_t boot_folder; + uint32_t start_app; + uint32_t open_folder; + uint32_t os9_folder; + uint32_t reserved; + uint32_t osx_folder; + uint8_t id[8]; +} __attribute__((packed)); + +#define HFS_SECTOR_SIZE 512 + +struct hfs_mdb { + uint8_t signature[2]; + uint32_t cr_date; + uint32_t ls_Mod; + uint16_t atrb; + uint16_t nm_fls; + uint16_t vbm_st; + uint16_t alloc_ptr; + uint16_t nm_al_blks; + uint32_t al_blk_size; + uint32_t clp_size; + uint16_t al_bl_st; + uint32_t nxt_cnid; + uint16_t free_bks; + uint8_t label_len; + uint8_t label[27]; + uint32_t vol_bkup; + uint16_t vol_seq_num; + uint32_t wr_cnt; + uint32_t xt_clump_size; + uint32_t ct_clump_size; + uint16_t num_root_dirs; + uint32_t file_count; + uint32_t dir_count; + struct hfs_finder_info finder_info; + uint8_t embed_sig[2]; + uint16_t embed_startblock; + uint16_t embed_blockcount; +} __attribute__((packed)); + + +#define HFS_NODE_LEAF 0xff +#define HFSPLUS_POR_CNID 1 + +struct hfsplus_bnode_descriptor { + uint32_t next; + uint32_t prev; + uint8_t type; + uint8_t height; + uint16_t num_recs; + uint16_t reserved; +} __attribute__((packed)); + +struct hfsplus_bheader_record { + uint16_t depth; + uint32_t root; + uint32_t leaf_count; + uint32_t leaf_head; + uint32_t leaf_tail; + uint16_t node_size; +} __attribute__((packed)); + +struct hfsplus_catalog_key { + uint16_t key_len; + uint32_t parent_id; + uint16_t unicode_len; + uint8_t unicode[255 * 2]; +} __attribute__((packed)); + +struct hfsplus_extent { + uint32_t start_block; + uint32_t block_count; +} __attribute__((packed)); + +#define HFSPLUS_EXTENT_COUNT 8 +struct hfsplus_fork { + uint64_t total_size; + uint32_t clump_size; + uint32_t total_blocks; + struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT]; +} __attribute__((packed)); + +struct hfsplus_vol_header { + uint8_t signature[2]; + uint16_t version; + uint32_t attributes; + uint32_t last_mount_vers; + uint32_t reserved; + uint32_t create_date; + uint32_t modify_date; + uint32_t backup_date; + uint32_t checked_date; + uint32_t file_count; + uint32_t folder_count; + uint32_t blocksize; + uint32_t total_blocks; + uint32_t free_blocks; + uint32_t next_alloc; + uint32_t rsrc_clump_sz; + uint32_t data_clump_sz; + uint32_t next_cnid; + uint32_t write_count; + uint64_t encodings_bmp; + struct hfs_finder_info finder_info; + struct hfsplus_fork alloc_file; + struct hfsplus_fork ext_file; + struct hfsplus_fork cat_file; + struct hfsplus_fork attr_file; + struct hfsplus_fork start_file; +} __attribute__((packed)); + +#define HFSPLUS_SECTOR_SIZE 512 + +static int hfs_set_uuid(blkid_probe pr, unsigned char const *hfs_info, size_t len) +{ + static unsigned char const hash_init[UL_MD5LENGTH] = { + 0xb3, 0xe2, 0x0f, 0x39, 0xf2, 0x92, 0x11, 0xd6, + 0x97, 0xa4, 0x00, 0x30, 0x65, 0x43, 0xec, 0xac + }; + unsigned char uuid[UL_MD5LENGTH]; + struct UL_MD5Context md5c; + + if (memcmp(hfs_info, "\0\0\0\0\0\0\0\0", len) == 0) + return -1; + + ul_MD5Init(&md5c); + ul_MD5Update(&md5c, hash_init, UL_MD5LENGTH); + ul_MD5Update(&md5c, hfs_info, len); + ul_MD5Final(uuid, &md5c); + + uuid[6] = 0x30 | (uuid[6] & 0x0f); + uuid[8] = 0x80 | (uuid[8] & 0x3f); + return blkid_probe_set_uuid(pr, uuid); +} + +static int probe_hfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct hfs_mdb *hfs; + int size; + + hfs = blkid_probe_get_sb(pr, mag, struct hfs_mdb); + if (!hfs) + return errno ? -errno : 1; + + if ((memcmp(hfs->embed_sig, "H+", 2) == 0) || + (memcmp(hfs->embed_sig, "HX", 2) == 0)) + return 1; /* Not hfs, but an embedded HFS+ */ + + size = be32_to_cpu(hfs->al_blk_size); + if (!size || (size & (HFS_SECTOR_SIZE - 1))) { + DBG(LOWPROBE, ul_debug("\tbad allocation size - ignore")); + return 1; + } + + hfs_set_uuid(pr, hfs->finder_info.id, sizeof(hfs->finder_info.id)); + + size = hfs->label_len; + if ((size_t) size > sizeof(hfs->label)) + size = sizeof(hfs->label); + blkid_probe_set_label(pr, hfs->label, size); + return 0; +} + +static int probe_hfsplus(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT]; + struct hfsplus_bnode_descriptor *descr; + struct hfsplus_bheader_record *bnode; + struct hfsplus_catalog_key *key; + struct hfsplus_vol_header *hfsplus; + struct hfs_mdb *sbd; + unsigned int alloc_block_size; + unsigned int alloc_first_block; + unsigned int embed_first_block; + unsigned int off = 0; + unsigned int blocksize; + unsigned int cat_block; + unsigned int ext_block_start = 0; + unsigned int ext_block_count; + unsigned int record_count; + unsigned int leaf_node_head; + unsigned int leaf_node_count; + unsigned int leaf_node_size; + unsigned int leaf_block; + int ext; + uint64_t leaf_off; + unsigned char *buf; + + sbd = blkid_probe_get_sb(pr, mag, struct hfs_mdb); + if (!sbd) + return errno ? -errno : 1; + + /* Check for a HFS+ volume embedded in a HFS volume */ + if (memcmp(sbd->signature, "BD", 2) == 0) { + if ((memcmp(sbd->embed_sig, "H+", 2) != 0) && + (memcmp(sbd->embed_sig, "HX", 2) != 0)) + /* This must be an HFS volume, so fail */ + return 1; + + alloc_block_size = be32_to_cpu(sbd->al_blk_size); + alloc_first_block = be16_to_cpu(sbd->al_bl_st); + embed_first_block = be16_to_cpu(sbd->embed_startblock); + off = (alloc_first_block * 512) + + (embed_first_block * alloc_block_size); + + buf = blkid_probe_get_buffer(pr, + off + (mag->kboff * 1024), + sizeof(struct hfsplus_vol_header)); + hfsplus = (struct hfsplus_vol_header *) buf; + + } else + hfsplus = blkid_probe_get_sb(pr, mag, + struct hfsplus_vol_header); + + if (!hfsplus) + return errno ? -errno : 1; + + if ((memcmp(hfsplus->signature, "H+", 2) != 0) && + (memcmp(hfsplus->signature, "HX", 2) != 0)) + return 1; + + hfs_set_uuid(pr, hfsplus->finder_info.id, sizeof(hfsplus->finder_info.id)); + + blocksize = be32_to_cpu(hfsplus->blocksize); + if (blocksize < HFSPLUS_SECTOR_SIZE) + return 1; + + blkid_probe_set_block_size(pr, blocksize); + + memcpy(extents, hfsplus->cat_file.extents, sizeof(extents)); + cat_block = be32_to_cpu(extents[0].start_block); + + buf = blkid_probe_get_buffer(pr, + off + ((uint64_t) cat_block * blocksize), 0x2000); + if (!buf) + return errno ? -errno : 0; + + bnode = (struct hfsplus_bheader_record *) + &buf[sizeof(struct hfsplus_bnode_descriptor)]; + + leaf_node_head = be32_to_cpu(bnode->leaf_head); + leaf_node_size = be16_to_cpu(bnode->node_size); + leaf_node_count = be32_to_cpu(bnode->leaf_count); + + if (leaf_node_size < sizeof(struct hfsplus_bnode_descriptor) + + sizeof(struct hfsplus_catalog_key) || leaf_node_count == 0) + return 0; + + leaf_block = (leaf_node_head * leaf_node_size) / blocksize; + + /* get physical location */ + for (ext = 0; ext < HFSPLUS_EXTENT_COUNT; ext++) { + ext_block_start = be32_to_cpu(extents[ext].start_block); + ext_block_count = be32_to_cpu(extents[ext].block_count); + if (ext_block_count == 0) + return 0; + + /* this is our extent */ + if (leaf_block < ext_block_count) + break; + + leaf_block -= ext_block_count; + } + if (ext == HFSPLUS_EXTENT_COUNT) + return 0; + + leaf_off = ((uint64_t) ext_block_start + leaf_block) * blocksize; + + buf = blkid_probe_get_buffer(pr, + (uint64_t) off + leaf_off, + leaf_node_size); + if (!buf) + return errno ? -errno : 0; + + descr = (struct hfsplus_bnode_descriptor *) buf; + record_count = be16_to_cpu(descr->num_recs); + if (record_count == 0) + return 0; + + if (descr->type != HFS_NODE_LEAF) + return 0; + + key = (struct hfsplus_catalog_key *) + &buf[sizeof(struct hfsplus_bnode_descriptor)]; + + if (be32_to_cpu(key->parent_id) != HFSPLUS_POR_CNID || + be16_to_cpu(key->unicode_len) > 255) + return 0; + + blkid_probe_set_utf8label(pr, key->unicode, + be16_to_cpu(key->unicode_len) * 2, + UL_ENCODE_UTF16BE); + return 0; +} + +const struct blkid_idinfo hfs_idinfo = +{ + .name = "hfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_hfs, + .flags = BLKID_IDINFO_TOLERANT, + .magics = + { + { .magic = "BD", .len = 2, .kboff = 1 }, + { NULL } + } +}; + +const struct blkid_idinfo hfsplus_idinfo = +{ + .name = "hfsplus", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_hfsplus, + .magics = + { + { .magic = "BD", .len = 2, .kboff = 1 }, + { .magic = "H+", .len = 2, .kboff = 1 }, + { .magic = "HX", .len = 2, .kboff = 1 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/highpoint_raid.c b/libblkid/src/superblocks/highpoint_raid.c new file mode 100644 index 0000000..2487930 --- /dev/null +++ b/libblkid/src/superblocks/highpoint_raid.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct hpt45x_metadata { + uint32_t magic; +}; + +#define HPT45X_MAGIC_OK 0x5a7816f3 +#define HPT45X_MAGIC_BAD 0x5a7816fd + +static int probe_highpoint45x(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct hpt45x_metadata *hpt; + uint64_t off; + uint32_t magic; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200) - 11) * 0x200; + hpt = (struct hpt45x_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct hpt45x_metadata)); + if (!hpt) + return errno ? -errno : 1; + magic = le32_to_cpu(hpt->magic); + if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(hpt->magic), + (unsigned char *) &hpt->magic)) + return 1; + return 0; +} + +static int probe_highpoint37x(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + return 0; +} + + +const struct blkid_idinfo highpoint45x_idinfo = { + .name = "hpt45x_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_highpoint45x, + .magics = BLKID_NONE_MAGIC +}; + +const struct blkid_idinfo highpoint37x_idinfo = { + .name = "hpt37x_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_highpoint37x, + .magics = { + /* + * Superblock offset: 4608 bytes (9 sectors) + * Magic string offset within superblock: 32 bytes + * + * kboff = (4608 + 32) / 1024 + * sboff = (4608 + 32) % kboff + */ + { .magic = "\xf0\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 }, + { .magic = "\xfd\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 }, + { NULL } + } +}; + + diff --git a/libblkid/src/superblocks/hpfs.c b/libblkid/src/superblocks/hpfs.c new file mode 100644 index 0000000..dcf4520 --- /dev/null +++ b/libblkid/src/superblocks/hpfs.c @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct hpfs_boot_block +{ + uint8_t jmp[3]; + uint8_t oem_id[8]; + uint8_t bytes_per_sector[2]; + uint8_t sectors_per_cluster; + uint8_t n_reserved_sectors[2]; + uint8_t n_fats; + uint8_t n_rootdir_entries[2]; + uint8_t n_sectors_s[2]; + uint8_t media_byte; + uint16_t sectors_per_fat; + uint16_t sectors_per_track; + uint16_t heads_per_cyl; + uint32_t n_hidden_sectors; + uint32_t n_sectors_l; + uint8_t drive_number; + uint8_t mbz; + uint8_t sig_28h; + uint8_t vol_serno[4]; + uint8_t vol_label[11]; + uint8_t sig_hpfs[8]; + uint8_t pad[448]; + uint8_t magic[2]; +} __attribute__((packed)); + +struct hpfs_super_block +{ + uint8_t magic[4]; + uint8_t magic1[4]; + uint8_t version; +} __attribute__((packed)); + +struct hpfs_spare_super +{ + uint8_t magic[4]; + uint8_t magic1[4]; +} __attribute__((packed)); + + +#define HPFS_SB_OFFSET 0x2000 +#define HPFS_SBSPARE_OFFSET 0x2200 + +static int probe_hpfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct hpfs_super_block *hs; + struct hpfs_spare_super *hss; + struct hpfs_boot_block *hbb; + uint8_t version; + + /* super block */ + hs = blkid_probe_get_sb(pr, mag, struct hpfs_super_block); + if (!hs) + return errno ? -errno : 1; + version = hs->version; + + /* spare super block */ + hss = (struct hpfs_spare_super *) + blkid_probe_get_buffer(pr, + HPFS_SBSPARE_OFFSET, + sizeof(struct hpfs_spare_super)); + if (!hss) + return errno ? -errno : 1; + if (memcmp(hss->magic, "\x49\x18\x91\xf9", 4) != 0) + return 1; + + /* boot block (with UUID and LABEL) */ + hbb = (struct hpfs_boot_block *) + blkid_probe_get_buffer(pr, + 0, + sizeof(struct hpfs_boot_block)); + if (!hbb) + return errno ? -errno : 1; + if (memcmp(hbb->magic, "\x55\xaa", 2) == 0 && + memcmp(hbb->sig_hpfs, "HPFS", 4) == 0 && + hbb->sig_28h == 0x28) { + blkid_probe_set_label(pr, hbb->vol_label, sizeof(hbb->vol_label)); + blkid_probe_sprintf_uuid(pr, + hbb->vol_serno, sizeof(hbb->vol_serno), + "%02X%02X-%02X%02X", + hbb->vol_serno[3], hbb->vol_serno[2], + hbb->vol_serno[1], hbb->vol_serno[0]); + } + blkid_probe_sprintf_version(pr, "%u", version); + blkid_probe_set_block_size(pr, 512); + + return 0; +} + +const struct blkid_idinfo hpfs_idinfo = +{ + .name = "hpfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_hpfs, + .magics = + { + { + .magic = "\x49\xe8\x95\xf9", + .len = 4, + .kboff = (HPFS_SB_OFFSET >> 10) + }, + { NULL } + } +}; + + diff --git a/libblkid/src/superblocks/iso9660.c b/libblkid/src/superblocks/iso9660.c new file mode 100644 index 0000000..289a325 --- /dev/null +++ b/libblkid/src/superblocks/iso9660.c @@ -0,0 +1,336 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired also by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> +#include <ctype.h> + +#include "superblocks.h" +#include "cctype.h" + +struct iso9660_date { + unsigned char year[4]; + unsigned char month[2]; + unsigned char day[2]; + unsigned char hour[2]; + unsigned char minute[2]; + unsigned char second[2]; + unsigned char hundredth[2]; + unsigned char offset; +} __attribute__ ((packed)); + +/* PVD - Primary volume descriptor */ +struct iso_volume_descriptor { + unsigned char vd_type; + unsigned char vd_id[5]; + unsigned char vd_version; + unsigned char flags; + unsigned char system_id[32]; + unsigned char volume_id[32]; + unsigned char unused[8]; + unsigned char space_size[8]; + unsigned char escape_sequences[8]; + unsigned char unused2[94]; + unsigned char volume_set_id[128]; + unsigned char publisher_id[128]; + unsigned char data_preparer_id[128]; + unsigned char application_id[128]; + unsigned char unused3[111]; + struct iso9660_date created; + struct iso9660_date modified; +} __attribute__((packed)); + +/* Boot Record */ +struct boot_record { + unsigned char vd_type; + unsigned char vd_id[5]; + unsigned char vd_version; + unsigned char boot_system_id[32]; + unsigned char boot_id[32]; + unsigned char unused[1]; +} __attribute__((packed)); + +#define ISO_SUPERBLOCK_OFFSET 0x8000 +#define ISO_SECTOR_SIZE 0x800 +#define ISO_VD_BOOT_RECORD 0x0 +#define ISO_VD_PRIMARY 0x1 +#define ISO_VD_SUPPLEMENTARY 0x2 +#define ISO_VD_END 0xff +#define ISO_VD_MAX 16 + +struct high_sierra_volume_descriptor { + unsigned char foo[8]; + unsigned char type; + unsigned char id[5]; + unsigned char version; + unsigned char unused1; + unsigned char system_id[32]; + unsigned char volume_id[32]; +} __attribute__((packed)); + +/* old High Sierra format */ +static int probe_iso9660_hsfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct high_sierra_volume_descriptor *iso; + + iso = blkid_probe_get_sb(pr, mag, struct high_sierra_volume_descriptor); + if (!iso) + return errno ? -errno : 1; + + blkid_probe_set_block_size(pr, ISO_SECTOR_SIZE); + blkid_probe_set_version(pr, "High Sierra"); + blkid_probe_set_label(pr, iso->volume_id, sizeof(iso->volume_id)); + return 0; +} + +static int probe_iso9660_set_uuid (blkid_probe pr, const struct iso9660_date *date) +{ + unsigned char buffer[16]; + unsigned int i, zeros = 0; + + buffer[0] = date->year[0]; + buffer[1] = date->year[1]; + buffer[2] = date->year[2]; + buffer[3] = date->year[3]; + buffer[4] = date->month[0]; + buffer[5] = date->month[1]; + buffer[6] = date->day[0]; + buffer[7] = date->day[1]; + buffer[8] = date->hour[0]; + buffer[9] = date->hour[1]; + buffer[10] = date->minute[0]; + buffer[11] = date->minute[1]; + buffer[12] = date->second[0]; + buffer[13] = date->second[1]; + buffer[14] = date->hundredth[0]; + buffer[15] = date->hundredth[1]; + + /* count the number of zeros ('0') in the date buffer */ + for (i = 0, zeros = 0; i < sizeof(buffer); i++) + if (buffer[i] == '0') + zeros++; + + /* due to the iso9660 standard if all date fields are '0' and offset is 0, the date is unset */ + if (zeros == sizeof(buffer) && date->offset == 0) + return 0; + + /* generate an UUID using this date and return success */ + blkid_probe_sprintf_uuid (pr, buffer, sizeof(buffer), + "%c%c%c%c-%c%c-%c%c-%c%c-%c%c-%c%c-%c%c", + buffer[0], buffer[1], buffer[2], buffer[3], + buffer[4], buffer[5], + buffer[6], buffer[7], + buffer[8], buffer[9], + buffer[10], buffer[11], + buffer[12], buffer[13], + buffer[14], buffer[15]); + + return 1; +} + +static int is_str_empty(const unsigned char *str, size_t len) +{ + size_t i; + + if (!str || !*str) + return 1; + + for (i = 0; i < len; i++) + if (!isspace(str[i])) + return 0; + return 1; +} + +static int is_utf16be_str_empty(unsigned char *utf16, size_t len) +{ + size_t i; + + for (i = 0; i < len; i += 2) { + if (utf16[i] != 0x0 || !isspace(utf16[i + 1])) + return 0; + } + return 1; +} + +/* if @utf16 is prefix of @ascii (ignoring non-representable characters and upper-case conversion) + * then reconstruct prefix from @utf16 and @ascii, append suffix from @ascii, fill it into @out + * and returns length of bytes written into @out; otherwise returns zero */ +static size_t merge_utf16be_ascii(unsigned char *out, const unsigned char *utf16, const unsigned char *ascii, size_t len) +{ + size_t o, a, u; + + for (o = 0, a = 0, u = 0; u + 1 < len && a < len; o += 2, a++, u += 2) { + /* Surrogate pair with code point above U+FFFF */ + if (utf16[u] >= 0xD8 && utf16[u] <= 0xDB && u + 3 < len && + utf16[u + 2] >= 0xDC && utf16[u + 2] <= 0xDF) { + out[o++] = utf16[u++]; + out[o++] = utf16[u++]; + } + /* Value '_' is replacement for non-representable character */ + if (ascii[a] == '_') { + out[o] = utf16[u]; + out[o + 1] = utf16[u + 1]; + } else if (utf16[u] == 0x00 && utf16[u + 1] == '_') { + out[o] = 0x00; + out[o + 1] = ascii[a]; + } else if (utf16[u] == 0x00 && c_toupper(ascii[a]) == c_toupper(utf16[u + 1])) { + out[o] = 0x00; + out[o + 1] = c_isupper(ascii[a]) ? utf16[u + 1] : ascii[a]; + } else { + return 0; + } + } + + for (; a < len; o += 2, a++) { + out[o] = 0x00; + out[o + 1] = ascii[a]; + } + + return o; +} + +/* iso9660 [+ Microsoft Joliet Extension] */ +static int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct boot_record *boot = NULL; + struct iso_volume_descriptor *pvd = NULL; + struct iso_volume_descriptor *joliet = NULL; + unsigned char buf[256]; + size_t len; + int is_unicode_empty; + int is_ascii_empty; + int i; + uint64_t off; + + if (blkid_probe_get_hint(pr, mag->hoff, &off) < 0) + off = 0; + + if (off % ISO_SECTOR_SIZE) + return 1; + + if (strcmp(mag->magic, "CDROM") == 0) + return probe_iso9660_hsfs(pr, mag); + + for (i = 0, off += ISO_SUPERBLOCK_OFFSET; i < ISO_VD_MAX && (!boot || !pvd || !joliet); i++, off += ISO_SECTOR_SIZE) { + unsigned char *desc = + blkid_probe_get_buffer(pr, + off, + max(sizeof(struct boot_record), + sizeof(struct iso_volume_descriptor))); + + if (desc == NULL || desc[0] == ISO_VD_END) + break; + else if (!boot && desc[0] == ISO_VD_BOOT_RECORD) + boot = (struct boot_record *)desc; + else if (!pvd && desc[0] == ISO_VD_PRIMARY) + pvd = (struct iso_volume_descriptor *)desc; + else if (!joliet && desc[0] == ISO_VD_SUPPLEMENTARY) { + joliet = (struct iso_volume_descriptor *)desc; + if (memcmp(joliet->escape_sequences, "%/@", 3) != 0 && + memcmp(joliet->escape_sequences, "%/C", 3) != 0 && + memcmp(joliet->escape_sequences, "%/E", 3) != 0) + joliet = NULL; + } + } + + if (!pvd) + return errno ? -errno : 1; + + blkid_probe_set_block_size(pr, ISO_SECTOR_SIZE); + + if (joliet && (len = merge_utf16be_ascii(buf, joliet->system_id, pvd->system_id, sizeof(pvd->system_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "SYSTEM_ID", buf, len, UL_ENCODE_UTF16BE); + else if (joliet) + blkid_probe_set_utf8_id_label(pr, "SYSTEM_ID", joliet->system_id, sizeof(joliet->system_id), UL_ENCODE_UTF16BE); + else + blkid_probe_set_id_label(pr, "SYSTEM_ID", pvd->system_id, sizeof(pvd->system_id)); + + if (joliet && (len = merge_utf16be_ascii(buf, joliet->volume_set_id, pvd->volume_set_id, sizeof(pvd->volume_set_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "VOLUME_SET_ID", buf, len, UL_ENCODE_UTF16BE); + else if (joliet) + blkid_probe_set_utf8_id_label(pr, "VOLUME_SET_ID", joliet->volume_set_id, sizeof(joliet->volume_set_id), UL_ENCODE_UTF16BE); + else + blkid_probe_set_id_label(pr, "VOLUME_SET_ID", pvd->volume_set_id, sizeof(pvd->volume_set_id)); + + is_ascii_empty = (is_str_empty(pvd->publisher_id, sizeof(pvd->publisher_id)) || pvd->publisher_id[0] == '_'); + is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->publisher_id, sizeof(joliet->publisher_id)) || (joliet->publisher_id[0] == 0x00 && joliet->publisher_id[1] == '_')); + if (!is_unicode_empty && !is_ascii_empty && (len = merge_utf16be_ascii(buf, joliet->publisher_id, pvd->publisher_id, sizeof(pvd->publisher_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "PUBLISHER_ID", buf, len, UL_ENCODE_UTF16BE); + else if (!is_unicode_empty) + blkid_probe_set_utf8_id_label(pr, "PUBLISHER_ID", joliet->publisher_id, sizeof(joliet->publisher_id), UL_ENCODE_UTF16BE); + else if (!is_ascii_empty) + blkid_probe_set_id_label(pr, "PUBLISHER_ID", pvd->publisher_id, sizeof(pvd->publisher_id)); + + is_ascii_empty = (is_str_empty(pvd->data_preparer_id, sizeof(pvd->data_preparer_id)) || pvd->data_preparer_id[0] == '_'); + is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->data_preparer_id, sizeof(joliet->data_preparer_id)) || (joliet->data_preparer_id[0] == 0x00 && joliet->data_preparer_id[1] == '_')); + if (!is_unicode_empty && !is_ascii_empty && (len = merge_utf16be_ascii(buf, joliet->data_preparer_id, pvd->data_preparer_id, sizeof(pvd->data_preparer_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "DATA_PREPARER_ID", buf, len, UL_ENCODE_UTF16BE); + else if (!is_unicode_empty) + blkid_probe_set_utf8_id_label(pr, "DATA_PREPARER_ID", joliet->data_preparer_id, sizeof(joliet->data_preparer_id), UL_ENCODE_UTF16BE); + else if (!is_ascii_empty) + blkid_probe_set_id_label(pr, "DATA_PREPARER_ID", pvd->data_preparer_id, sizeof(pvd->data_preparer_id)); + + is_ascii_empty = (is_str_empty(pvd->application_id, sizeof(pvd->application_id)) || pvd->application_id[0] == '_'); + is_unicode_empty = (!joliet || is_utf16be_str_empty(joliet->application_id, sizeof(joliet->application_id)) || (joliet->application_id[0] == 0x00 && joliet->application_id[1] == '_')); + if (!is_unicode_empty && !is_ascii_empty && (len = merge_utf16be_ascii(buf, joliet->application_id, pvd->application_id, sizeof(pvd->application_id))) != 0) + blkid_probe_set_utf8_id_label(pr, "APPLICATION_ID", buf, len, UL_ENCODE_UTF16BE); + else if (!is_unicode_empty) + blkid_probe_set_utf8_id_label(pr, "APPLICATION_ID", joliet->application_id, sizeof(joliet->application_id), UL_ENCODE_UTF16BE); + else if (!is_ascii_empty) + blkid_probe_set_id_label(pr, "APPLICATION_ID", pvd->application_id, sizeof(pvd->application_id)); + + /* create an UUID using the modified/created date */ + if (! probe_iso9660_set_uuid(pr, &pvd->modified)) + probe_iso9660_set_uuid(pr, &pvd->created); + + if (boot) + blkid_probe_set_id_label(pr, "BOOT_SYSTEM_ID", + boot->boot_system_id, + sizeof(boot->boot_system_id)); + + if (joliet) + blkid_probe_set_version(pr, "Joliet Extension"); + + /* Label in Joliet is UNICODE (UTF16BE) but can contain only 16 characters. Label in PVD is + * subset of ASCII but can contain up to the 32 characters. Non-representable characters are + * stored as replacement character '_'. Label in Joliet is in most cases trimmed but UNICODE + * version of label in PVD. Based on these facts try to reconstruct original label if label + * in Joliet is prefix of the label in PVD (ignoring non-representable characters). + */ + if (joliet && (len = merge_utf16be_ascii(buf, joliet->volume_id, pvd->volume_id, sizeof(pvd->volume_id))) != 0) + blkid_probe_set_utf8label(pr, buf, len, UL_ENCODE_UTF16BE); + else if (joliet) + blkid_probe_set_utf8label(pr, joliet->volume_id, sizeof(joliet->volume_id), UL_ENCODE_UTF16BE); + else + blkid_probe_set_label(pr, pvd->volume_id, sizeof(pvd->volume_id)); + + return 0; +} + +const struct blkid_idinfo iso9660_idinfo = +{ + .name = "iso9660", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_iso9660, + .flags = BLKID_IDINFO_TOLERANT, + .magics = + { + { .magic = "CD001", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "CDROM", .len = 5, .kboff = 32, .sboff = 9, .hoff = "session_offset" }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/isw_raid.c b/libblkid/src/superblocks/isw_raid.c new file mode 100644 index 0000000..81d53a1 --- /dev/null +++ b/libblkid/src/superblocks/isw_raid.c @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct isw_metadata { + uint8_t sig[32]; + uint32_t check_sum; + uint32_t mpb_size; + uint32_t family_num; + uint32_t generation_num; +}; + +#define ISW_SIGNATURE "Intel Raid ISM Cfg Sig. " + +static int probe_iswraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + unsigned int sector_size; + struct isw_metadata *isw; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + sector_size = blkid_probe_get_sectorsize(pr); + off = ((pr->size / sector_size) - 2) * sector_size; + + isw = (struct isw_metadata *)blkid_probe_get_buffer(pr, + off, sizeof(struct isw_metadata)); + if (!isw) + return errno ? -errno : 1; + + if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0) + return 1; + + if (blkid_probe_sprintf_version(pr, "%6s", + &isw->sig[sizeof(ISW_SIGNATURE)-1]) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(isw->sig), + (unsigned char *) isw->sig)) + return 1; + return 0; +} + +const struct blkid_idinfo iswraid_idinfo = { + .name = "isw_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_iswraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/jfs.c b/libblkid/src/superblocks/jfs.c new file mode 100644 index 0000000..3de8c2e --- /dev/null +++ b/libblkid/src/superblocks/jfs.c @@ -0,0 +1,72 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct jfs_super_block { + unsigned char js_magic[4]; + uint32_t js_version; + uint64_t js_size; + uint32_t js_bsize; /* 4: aggregate block size in bytes */ + uint16_t js_l2bsize; /* 2: log2 of s_bsize */ + uint16_t js_l2bfactor; /* 2: log2(s_bsize/hardware block size) */ + uint32_t js_pbsize; /* 4: hardware/LVM block size in bytes */ + uint16_t js_l2pbsize; /* 2: log2 of s_pbsize */ + uint16_t js_pad; /* 2: padding necessary for alignment */ + uint32_t js_dummy2[26]; + unsigned char js_uuid[16]; + unsigned char js_label[16]; + unsigned char js_loguuid[16]; +}; + +static int probe_jfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct jfs_super_block *js; + + js = blkid_probe_get_sb(pr, mag, struct jfs_super_block); + if (!js) + return errno ? -errno : 1; + if (le32_to_cpu(js->js_bsize) != (1U << le16_to_cpu(js->js_l2bsize))) + return 1; + if (le32_to_cpu(js->js_pbsize) != (1U << le16_to_cpu(js->js_l2pbsize))) + return 1; + if ((le16_to_cpu(js->js_l2bsize) - le16_to_cpu(js->js_l2pbsize)) != + le16_to_cpu(js->js_l2bfactor)) + return 1; + + if (*((char *) js->js_label) != '\0') + blkid_probe_set_label(pr, js->js_label, sizeof(js->js_label)); + blkid_probe_set_uuid(pr, js->js_uuid); + blkid_probe_set_block_size(pr, le32_to_cpu(js->js_bsize)); + return 0; +} + + +const struct blkid_idinfo jfs_idinfo = +{ + .name = "jfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_jfs, + .minsz = 16 * 1024 * 1024, + .magics = + { + { .magic = "JFS1", .len = 4, .kboff = 32 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/jmicron_raid.c b/libblkid/src/superblocks/jmicron_raid.c new file mode 100644 index 0000000..ca79867 --- /dev/null +++ b/libblkid/src/superblocks/jmicron_raid.c @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct jm_metadata { + int8_t signature[2]; + uint8_t minor_version; + uint8_t major_version; + uint16_t checksum; +}; + +#define JM_SIGNATURE "JM" + +static int probe_jmraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct jm_metadata *jm; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200) - 1) * 0x200; + jm = (struct jm_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct jm_metadata)); + if (!jm) + return errno ? -errno : 1; + + if (memcmp(jm->signature, JM_SIGNATURE, sizeof(JM_SIGNATURE) - 1) != 0) + return 1; + if (blkid_probe_sprintf_version(pr, "%u.%u", + jm->major_version, jm->minor_version) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(jm->signature), + (unsigned char *) jm->signature)) + return 1; + return 0; +} + +const struct blkid_idinfo jmraid_idinfo = { + .name = "jmicron_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_jmraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/linux_raid.c b/libblkid/src/superblocks/linux_raid.c new file mode 100644 index 0000000..4388e56 --- /dev/null +++ b/libblkid/src/superblocks/linux_raid.c @@ -0,0 +1,267 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct mdp0_super_block { + uint32_t md_magic; + uint32_t major_version; + uint32_t minor_version; + uint32_t patch_version; + uint32_t gvalid_words; + uint32_t set_uuid0; + uint32_t ctime; + uint32_t level; + uint32_t size; + uint32_t nr_disks; + uint32_t raid_disks; + uint32_t md_minor; + uint32_t not_persistent; + uint32_t set_uuid1; + uint32_t set_uuid2; + uint32_t set_uuid3; +}; + +/* + * Version-1, little-endian. + */ +struct mdp1_super_block { + /* constant array information - 128 bytes */ + uint32_t magic; /* MD_SB_MAGIC: 0xa92b4efc - little endian */ + uint32_t major_version; /* 1 */ + uint32_t feature_map; /* 0 for now */ + uint32_t pad0; /* always set to 0 when writing */ + + uint8_t set_uuid[16]; /* user-space generated. */ + unsigned char set_name[32]; /* set and interpreted by user-space */ + + uint64_t ctime; /* lo 40 bits are seconds, top 24 are microseconds or 0*/ + uint32_t level; /* -4 (multipath), -1 (linear), 0,1,4,5 */ + uint32_t layout; /* only for raid5 currently */ + uint64_t size; /* used size of component devices, in 512byte sectors */ + + uint32_t chunksize; /* in 512byte sectors */ + uint32_t raid_disks; + uint32_t bitmap_offset; /* sectors after start of superblock that bitmap starts + * NOTE: signed, so bitmap can be before superblock + * only meaningful of feature_map[0] is set. + */ + + /* These are only valid with feature bit '4' */ + uint32_t new_level; /* new level we are reshaping to */ + uint64_t reshape_position; /* next address in array-space for reshape */ + uint32_t delta_disks; /* change in number of raid_disks */ + uint32_t new_layout; /* new layout */ + uint32_t new_chunk; /* new chunk size (bytes) */ + uint8_t pad1[128-124]; /* set to 0 when written */ + + /* constant this-device information - 64 bytes */ + uint64_t data_offset; /* sector start of data, often 0 */ + uint64_t data_size; /* sectors in this device that can be used for data */ + uint64_t super_offset; /* sector start of this superblock */ + uint64_t recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ + uint32_t dev_number; /* permanent identifier of this device - not role in raid */ + uint32_t cnt_corrected_read; /* number of read errors that were corrected by re-writing */ + uint8_t device_uuid[16]; /* user-space setable, ignored by kernel */ + uint8_t devflags; /* per-device flags. Only one defined...*/ + uint8_t pad2[64-57]; /* set to 0 when writing */ + + /* array state information - 64 bytes */ + uint64_t utime; /* 40 bits second, 24 bits microseconds */ + uint64_t events; /* incremented when superblock updated */ + uint64_t resync_offset; /* data before this offset (from data_offset) known to be in sync */ + uint32_t sb_csum; /* checksum up to dev_roles[max_dev] */ + uint32_t max_dev; /* size of dev_roles[] array to consider */ + uint8_t pad3[64-32]; /* set to 0 when writing */ + + /* device state information. Indexed by dev_number. + * 2 bytes per device + * Note there are no per-device state flags. State information is rolled + * into the 'roles' value. If a device is spare or faulty, then it doesn't + * have a meaningful role. + */ + uint16_t dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ +}; + + +#define MD_RESERVED_BYTES 0x10000 +#define MD_SB_MAGIC 0xa92b4efc + +static int probe_raid0(blkid_probe pr, uint64_t off) +{ + struct mdp0_super_block *mdp0; + union { + uint32_t ints[4]; + uint8_t bytes[16]; + } uuid; + uint32_t ma, mi, pa; + uint64_t size; + + if (pr->size < MD_RESERVED_BYTES) + return 1; + mdp0 = (struct mdp0_super_block *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct mdp0_super_block)); + if (!mdp0) + return errno ? -errno : 1; + + memset(uuid.ints, 0, sizeof(uuid.ints)); + + if (le32_to_cpu(mdp0->md_magic) == MD_SB_MAGIC) { + uuid.ints[0] = swab32(mdp0->set_uuid0); + if (le32_to_cpu(mdp0->minor_version) >= 90) { + uuid.ints[1] = swab32(mdp0->set_uuid1); + uuid.ints[2] = swab32(mdp0->set_uuid2); + uuid.ints[3] = swab32(mdp0->set_uuid3); + } + ma = le32_to_cpu(mdp0->major_version); + mi = le32_to_cpu(mdp0->minor_version); + pa = le32_to_cpu(mdp0->patch_version); + size = le32_to_cpu(mdp0->size); + + } else if (be32_to_cpu(mdp0->md_magic) == MD_SB_MAGIC) { + uuid.ints[0] = mdp0->set_uuid0; + if (be32_to_cpu(mdp0->minor_version) >= 90) { + uuid.ints[1] = mdp0->set_uuid1; + uuid.ints[2] = mdp0->set_uuid2; + uuid.ints[3] = mdp0->set_uuid3; + } + ma = be32_to_cpu(mdp0->major_version); + mi = be32_to_cpu(mdp0->minor_version); + pa = be32_to_cpu(mdp0->patch_version); + size = be32_to_cpu(mdp0->size); + } else + return 1; + + size <<= 10; /* convert KiB to bytes */ + + if (pr->size < size + MD_RESERVED_BYTES) + /* device is too small */ + return 1; + + if (off < size) + /* no space before superblock */ + return 1; + + /* + * Check for collisions between RAID and partition table + * + * For example the superblock is at the end of the last partition, it's + * the same position as at the end of the disk... + */ + if ((S_ISREG(pr->mode) || blkid_probe_is_wholedisk(pr)) && + blkid_probe_is_covered_by_pt(pr, + off - size, /* min. start */ + size + MD_RESERVED_BYTES)) { /* min. length */ + + /* ignore this superblock, it's within any partition and + * we are working with whole-disk now */ + return 1; + } + + if (blkid_probe_sprintf_version(pr, "%u.%u.%u", ma, mi, pa) != 0) + return 1; + if (blkid_probe_set_uuid(pr, (unsigned char *) uuid.bytes) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(mdp0->md_magic), + (unsigned char *) &mdp0->md_magic)) + return 1; + return 0; +} + +static int probe_raid1(blkid_probe pr, off_t off) +{ + struct mdp1_super_block *mdp1; + + mdp1 = (struct mdp1_super_block *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct mdp1_super_block)); + if (!mdp1) + return errno ? -errno : 1; + if (le32_to_cpu(mdp1->magic) != MD_SB_MAGIC) + return 1; + if (le32_to_cpu(mdp1->major_version) != 1U) + return 1; + if (le64_to_cpu(mdp1->super_offset) != (uint64_t) off >> 9) + return 1; + if (blkid_probe_set_uuid(pr, (unsigned char *) mdp1->set_uuid) != 0) + return 1; + if (blkid_probe_set_uuid_as(pr, + (unsigned char *) mdp1->device_uuid, "UUID_SUB") != 0) + return 1; + if (blkid_probe_set_label(pr, mdp1->set_name, + sizeof(mdp1->set_name)) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(mdp1->magic), + (unsigned char *) &mdp1->magic)) + return 1; + return 0; +} + +static int probe_raid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + const char *ver = NULL; + int ret = BLKID_PROBE_NONE; + + if (pr->size > MD_RESERVED_BYTES) { + /* version 0 at the end of the device */ + uint64_t sboff = (pr->size & ~(MD_RESERVED_BYTES - 1)) + - MD_RESERVED_BYTES; + ret = probe_raid0(pr, sboff); + if (ret < 1) + return ret; /* error */ + + /* version 1.0 at the end of the device */ + sboff = (pr->size & ~(0x1000 - 1)) - 0x2000; + ret = probe_raid1(pr, sboff); + if (ret < 0) + return ret; /* error */ + if (ret == 0) + ver = "1.0"; + } + + if (!ver) { + /* version 1.1 at the start of the device */ + ret = probe_raid1(pr, 0); + if (ret == 0) + ver = "1.1"; + + /* version 1.2 at 4k offset from the start */ + else if (ret == BLKID_PROBE_NONE) { + ret = probe_raid1(pr, 0x1000); + if (ret == 0) + ver = "1.2"; + } + } + + if (ver) { + blkid_probe_set_version(pr, ver); + return BLKID_PROBE_OK; + } + return ret; +} + + +const struct blkid_idinfo linuxraid_idinfo = { + .name = "linux_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_raid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/lsi_raid.c b/libblkid/src/superblocks/lsi_raid.c new file mode 100644 index 0000000..697b0fe --- /dev/null +++ b/libblkid/src/superblocks/lsi_raid.c @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct lsi_metadata { + uint8_t sig[6]; +}; + + +#define LSI_SIGNATURE "$XIDE$" + +static int probe_lsiraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct lsi_metadata *lsi; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200) - 1) * 0x200; + lsi = (struct lsi_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct lsi_metadata)); + if (!lsi) + return errno ? -errno : 1; + + if (memcmp(lsi->sig, LSI_SIGNATURE, sizeof(LSI_SIGNATURE)-1) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(lsi->sig), + (unsigned char *) lsi->sig)) + return 1; + return 0; +} + +const struct blkid_idinfo lsiraid_idinfo = { + .name = "lsi_mega_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_lsiraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/luks.c b/libblkid/src/superblocks/luks.c new file mode 100644 index 0000000..0230b34 --- /dev/null +++ b/libblkid/src/superblocks/luks.c @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2018 Milan Broz <gmazyland@gmail.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +#define LUKS_CIPHERNAME_L 32 +#define LUKS_CIPHERMODE_L 32 +#define LUKS_HASHSPEC_L 32 +#define LUKS_DIGESTSIZE 20 +#define LUKS_SALTSIZE 32 +#define LUKS_MAGIC_L 6 +#define UUID_STRING_L 40 +#define LUKS2_LABEL_L 48 +#define LUKS2_SALT_L 64 +#define LUKS2_CHECKSUM_ALG_L 32 +#define LUKS2_CHECKSUM_L 64 + +#define LUKS_MAGIC "LUKS\xba\xbe" +#define LUKS_MAGIC_2 "SKUL\xba\xbe" + +/* Offsets for secondary header (for scan if primary header is corrupted). */ +#define LUKS2_HDR2_OFFSETS { 0x04000, 0x008000, 0x010000, 0x020000, \ + 0x40000, 0x080000, 0x100000, 0x200000, 0x400000 } + +static const uint64_t secondary_offsets[] = LUKS2_HDR2_OFFSETS; + +struct luks_phdr { + uint8_t magic[LUKS_MAGIC_L]; + uint16_t version; + uint8_t cipherName[LUKS_CIPHERNAME_L]; + uint8_t cipherMode[LUKS_CIPHERMODE_L]; + uint8_t hashSpec[LUKS_HASHSPEC_L]; + uint32_t payloadOffset; + uint32_t keyBytes; + uint8_t mkDigest[LUKS_DIGESTSIZE]; + uint8_t mkDigestSalt[LUKS_SALTSIZE]; + uint32_t mkDigestIterations; + uint8_t uuid[UUID_STRING_L]; +} __attribute__((packed)); + +struct luks2_phdr { + char magic[LUKS_MAGIC_L]; + uint16_t version; + uint64_t hdr_size; /* in bytes, including JSON area */ + uint64_t seqid; /* increased on every update */ + char label[LUKS2_LABEL_L]; + char checksum_alg[LUKS2_CHECKSUM_ALG_L]; + uint8_t salt[LUKS2_SALT_L]; /* unique for every header/offset */ + char uuid[UUID_STRING_L]; + char subsystem[LUKS2_LABEL_L]; /* owner subsystem label */ + uint64_t hdr_offset; /* offset from device start in bytes */ + char _padding[184]; + uint8_t csum[LUKS2_CHECKSUM_L]; + /* Padding to 4k, then JSON area */ +} __attribute__ ((packed)); + +static int luks_attributes(blkid_probe pr, struct luks2_phdr *header, uint64_t offset) +{ + int version; + struct luks_phdr *header_v1; + + if (blkid_probe_set_magic(pr, offset, LUKS_MAGIC_L, (unsigned char *) &header->magic)) + return BLKID_PROBE_NONE; + + version = be16_to_cpu(header->version); + blkid_probe_sprintf_version(pr, "%u", version); + + if (version == 1) { + header_v1 = (struct luks_phdr *)header; + blkid_probe_strncpy_uuid(pr, + (unsigned char *) header_v1->uuid, UUID_STRING_L); + } else if (version == 2) { + blkid_probe_strncpy_uuid(pr, + (unsigned char *) header->uuid, UUID_STRING_L); + blkid_probe_set_label(pr, + (unsigned char *) header->label, LUKS2_LABEL_L); + blkid_probe_set_id_label(pr, "SUBSYSTEM", + (unsigned char *) header->subsystem, LUKS2_LABEL_L); + } + + return BLKID_PROBE_OK; +} + +static int probe_luks(blkid_probe pr, const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct luks2_phdr *header; + size_t i; + + header = (struct luks2_phdr *) blkid_probe_get_buffer(pr, 0, sizeof(struct luks2_phdr)); + if (!header) + return errno ? -errno : BLKID_PROBE_NONE; + + if (!memcmp(header->magic, LUKS_MAGIC, LUKS_MAGIC_L)) { + /* LUKS primary header was found. */ + return luks_attributes(pr, header, 0); + } + + /* No primary header, scan for known offsets of LUKS2 secondary header. */ + for (i = 0; i < ARRAY_SIZE(secondary_offsets); i++) { + header = (struct luks2_phdr *) blkid_probe_get_buffer(pr, + secondary_offsets[i], sizeof(struct luks2_phdr)); + + if (!header) + return errno ? -errno : BLKID_PROBE_NONE; + + if (!memcmp(header->magic, LUKS_MAGIC_2, LUKS_MAGIC_L)) + return luks_attributes(pr, header, secondary_offsets[i]); + } + + return BLKID_PROBE_NONE; +} + +const struct blkid_idinfo luks_idinfo = +{ + .name = "crypto_LUKS", + .usage = BLKID_USAGE_CRYPTO, + .probefunc = probe_luks, + .magics = BLKID_NONE_MAGIC +}; diff --git a/libblkid/src/superblocks/lvm.c b/libblkid/src/superblocks/lvm.c new file mode 100644 index 0000000..b078aba --- /dev/null +++ b/libblkid/src/superblocks/lvm.c @@ -0,0 +1,264 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2012 Milan Broz <mbroz@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +#define LVM1_ID_LEN 128 +#define LVM2_ID_LEN 32 + +struct lvm2_pv_label_header { + /* label_header */ + uint8_t id[8]; /* LABELONE */ + uint64_t sector_xl; /* Sector number of this label */ + uint32_t crc_xl; /* From next field to end of sector */ + uint32_t offset_xl; /* Offset from start of struct to contents */ + uint8_t type[8]; /* LVM2 001 */ + /* pv_header */ + uint8_t pv_uuid[LVM2_ID_LEN]; +} __attribute__ ((packed)); + +struct lvm1_pv_label_header { + uint8_t id[2]; /* HM */ + uint16_t version; /* version 1 or 2 */ + uint32_t _notused[10]; /* lvm1 internals */ + uint8_t pv_uuid[LVM1_ID_LEN]; +} __attribute__ ((packed)); + +#define LVM2_LABEL_SIZE 512 +static unsigned int lvm2_calc_crc(const void *buf, unsigned int size) +{ + static const unsigned int crctab[] = { + 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, + 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, + 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, + 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c + }; + unsigned int i, crc = 0xf597a6cf; + const uint8_t *data = (const uint8_t *) buf; + + for (i = 0; i < size; i++) { + crc ^= *data++; + crc = (crc >> 4) ^ crctab[crc & 0xf]; + crc = (crc >> 4) ^ crctab[crc & 0xf]; + } + return crc; +} + +/* Length of real UUID is always LVM2_ID_LEN */ +static void format_lvm_uuid(char *dst_uuid, char *src_uuid) +{ + unsigned int i, b; + + for (i = 0, b = 1; i < LVM2_ID_LEN; i++, b <<= 1) { + if (b & 0x4444440) + *dst_uuid++ = '-'; + *dst_uuid++ = *src_uuid++; + } + *dst_uuid = '\0'; +} + +static int probe_lvm2(blkid_probe pr, const struct blkid_idmag *mag) +{ + int sector = mag->kboff << 1; + struct lvm2_pv_label_header *label; + char uuid[LVM2_ID_LEN + 7]; + unsigned char *buf; + + buf = blkid_probe_get_buffer(pr, + mag->kboff << 10, + 512 + sizeof(struct lvm2_pv_label_header)); + if (!buf) + return errno ? -errno : 1; + + /* buf is at 0k or 1k offset; find label inside */ + if (memcmp(buf, "LABELONE", 8) == 0) { + label = (struct lvm2_pv_label_header *) buf; + } else if (memcmp(buf + 512, "LABELONE", 8) == 0) { + label = (struct lvm2_pv_label_header *)(buf + 512); + sector++; + } else { + return 1; + } + + if (le64_to_cpu(label->sector_xl) != (unsigned) sector) + return 1; + + if (!blkid_probe_verify_csum( + pr, lvm2_calc_crc( + &label->offset_xl, LVM2_LABEL_SIZE - + ((char *) &label->offset_xl - (char *) label)), + le32_to_cpu(label->crc_xl))) + return 1; + + format_lvm_uuid(uuid, (char *) label->pv_uuid); + blkid_probe_sprintf_uuid(pr, label->pv_uuid, sizeof(label->pv_uuid), + "%s", uuid); + + /* the mag->magic is the same string as label->type, + * but zero terminated */ + blkid_probe_set_version(pr, mag->magic); + + /* LVM (pvcreate) wipes begin of the device -- let's remember this + * to resolve conflicts between LVM and partition tables, ... + */ + blkid_probe_set_wiper(pr, 0, 8 * 1024); + + return 0; +} + +static int probe_lvm1(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct lvm1_pv_label_header *label; + char uuid[LVM2_ID_LEN + 7]; + unsigned int version; + + label = blkid_probe_get_sb(pr, mag, struct lvm1_pv_label_header); + if (!label) + return errno ? -errno : 1; + + version = le16_to_cpu(label->version); + if (version != 1 && version != 2) + return 1; + + format_lvm_uuid(uuid, (char *) label->pv_uuid); + blkid_probe_sprintf_uuid(pr, label->pv_uuid, sizeof(label->pv_uuid), + "%s", uuid); + + return 0; +} + +struct verity_sb { + uint8_t signature[8]; /* "verity\0\0" */ + uint32_t version; /* superblock version */ + uint32_t hash_type; /* 0 - Chrome OS, 1 - normal */ + uint8_t uuid[16]; /* UUID of hash device */ + uint8_t algorithm[32];/* hash algorithm name */ + uint32_t data_block_size; /* data block in bytes */ + uint32_t hash_block_size; /* hash block in bytes */ + uint64_t data_blocks; /* number of data blocks */ + uint16_t salt_size; /* salt size */ + uint8_t _pad1[6]; + uint8_t salt[256]; /* salt */ + uint8_t _pad2[168]; +} __attribute__((packed)); + +static int probe_verity(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct verity_sb *sb; + unsigned int version; + + sb = blkid_probe_get_sb(pr, mag, struct verity_sb); + if (sb == NULL) + return errno ? -errno : 1; + + version = le32_to_cpu(sb->version); + if (version != 1) + return 1; + + blkid_probe_set_uuid(pr, sb->uuid); + blkid_probe_sprintf_version(pr, "%u", version); + return 0; +} + +struct integrity_sb { + uint8_t magic[8]; + uint8_t version; + int8_t log2_interleave_sectors; + uint16_t integrity_tag_size; + uint32_t journal_sections; + uint64_t provided_data_sectors; + uint32_t flags; + uint8_t log2_sectors_per_block; +} __attribute__ ((packed)); + +static int probe_integrity(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct integrity_sb *sb; + + sb = blkid_probe_get_sb(pr, mag, struct integrity_sb); + if (sb == NULL) + return errno ? -errno : 1; + + if (!sb->version) + return 1; + + blkid_probe_sprintf_version(pr, "%u", sb->version); + return 0; +} + +/* NOTE: the original libblkid uses "lvm2pv" as a name */ +const struct blkid_idinfo lvm2_idinfo = +{ + .name = "LVM2_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_lvm2, + .magics = + { + { .magic = "LVM2 001", .len = 8, .sboff = 0x218 }, + { .magic = "LVM2 001", .len = 8, .sboff = 0x018 }, + { .magic = "LVM2 001", .len = 8, .kboff = 1, .sboff = 0x018 }, + { .magic = "LVM2 001", .len = 8, .kboff = 1, .sboff = 0x218 }, + { NULL } + } +}; + +const struct blkid_idinfo lvm1_idinfo = +{ + .name = "LVM1_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_lvm1, + .magics = + { + { .magic = "HM", .len = 2 }, + { NULL } + } +}; + +const struct blkid_idinfo snapcow_idinfo = +{ + .name = "DM_snapshot_cow", + .usage = BLKID_USAGE_OTHER, + .magics = + { + { .magic = "SnAp", .len = 4 }, + { NULL } + } +}; + +const struct blkid_idinfo verity_hash_idinfo = +{ + .name = "DM_verity_hash", + .usage = BLKID_USAGE_CRYPTO, + .probefunc = probe_verity, + .magics = + { + { .magic = "verity\0\0", .len = 8 }, + { NULL } + } +}; + +const struct blkid_idinfo integrity_idinfo = +{ + .name = "DM_integrity", + .usage = BLKID_USAGE_CRYPTO, + .probefunc = probe_integrity, + .magics = + { + { .magic = "integrt\0", .len = 8 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/minix.c b/libblkid/src/superblocks/minix.c new file mode 100644 index 0000000..b521efb --- /dev/null +++ b/libblkid/src/superblocks/minix.c @@ -0,0 +1,187 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008-2013 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <string.h> +#include "superblocks.h" +#include "minix.h" + +#define minix_swab16(doit, num) ((uint16_t) (doit ? swab16(num) : num)) +#define minix_swab32(doit, num) ((uint32_t) (doit ? swab32(num) : num)) + +static int get_minix_version(const unsigned char *data, int *other_endian) +{ + const struct minix_super_block *sb = (const struct minix_super_block *) data; + const struct minix3_super_block *sb3 = (const struct minix3_super_block *) data; + int version = 0; + char *endian; + + *other_endian = 0; + + switch (sb->s_magic) { + case MINIX_SUPER_MAGIC: + case MINIX_SUPER_MAGIC2: + version = 1; + break; + case MINIX2_SUPER_MAGIC: + case MINIX2_SUPER_MAGIC2: + version = 2; + break; + default: + if (sb3->s_magic == MINIX3_SUPER_MAGIC) + version = 3; + break; + } + + if (!version) { + *other_endian = 1; + + switch (swab16(sb->s_magic)) { + case MINIX_SUPER_MAGIC: + case MINIX_SUPER_MAGIC2: + version = 1; + break; + case MINIX2_SUPER_MAGIC: + case MINIX2_SUPER_MAGIC2: + version = 2; + break; + default: + if (sb3->s_magic == MINIX3_SUPER_MAGIC) + version = 3; + break; + } + } + if (!version) + return -1; + +#if defined(WORDS_BIGENDIAN) + endian = *other_endian ? "LE" : "BE"; +#else + endian = *other_endian ? "BE" : "LE"; +#endif + DBG(LOWPROBE, ul_debug("minix version %d detected [%s]", version, + endian)); + return version; +} + +static int probe_minix(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + unsigned char *ext; + const unsigned char *data; + int version = 0, swabme = 0; + unsigned long zones, ninodes, imaps, zmaps; + off_t firstz; + size_t zone_size; + unsigned block_size; + + data = blkid_probe_get_buffer(pr, 1024, + max(sizeof(struct minix_super_block), + sizeof(struct minix3_super_block))); + if (!data) + return errno ? -errno : 1; + version = get_minix_version(data, &swabme); + switch (version) { + case 1: + case 2: { + const struct minix_super_block *sb = (const struct minix_super_block *) data; + + uint16_t state = minix_swab16(swabme, sb->s_state); + if ((state & (MINIX_VALID_FS | MINIX_ERROR_FS)) != state) + return 1; + + zones = version == 2 ? minix_swab32(swabme, sb->s_zones) : + minix_swab16(swabme, sb->s_nzones); + ninodes = minix_swab16(swabme, sb->s_ninodes); + imaps = minix_swab16(swabme, sb->s_imap_blocks); + zmaps = minix_swab16(swabme, sb->s_zmap_blocks); + firstz = minix_swab16(swabme, sb->s_firstdatazone); + zone_size = sb->s_log_zone_size; + block_size = 1024; + break; + } + case 3: { + const struct minix3_super_block *sb = (const struct minix3_super_block *) data; + + zones = minix_swab32(swabme, sb->s_zones); + ninodes = minix_swab32(swabme, sb->s_ninodes); + imaps = minix_swab16(swabme, sb->s_imap_blocks); + zmaps = minix_swab16(swabme, sb->s_zmap_blocks); + firstz = minix_swab16(swabme, sb->s_firstdatazone); + zone_size = sb->s_log_zone_size; + block_size = minix_swab16(swabme, sb->s_blocksize); + + break; + } + default: + return 1; + } + + /* sanity checks to be sure that the FS is really minix. + * see disk-utils/fsck.minix.c read_superblock + */ + if (zone_size != 0 || ninodes == 0 || ninodes == UINT32_MAX) + return 1; + if (imaps * MINIX_BLOCK_SIZE * 8 < ninodes + 1) + return 1; + if (firstz > (off_t) zones) + return 1; + if (zmaps * MINIX_BLOCK_SIZE * 8 < zones - firstz + 1) + return 1; + + /* unfortunately, some parts of ext3 is sometimes possible to + * interpreted as minix superblock. So check for extN magic + * string. (For extN magic string and offsets see ext.c.) + */ + ext = blkid_probe_get_buffer(pr, 0x400 + 0x38, 2); + if (!ext) + return errno ? -errno : 1; + + if (memcmp(ext, "\123\357", 2) == 0) + return 1; + + blkid_probe_sprintf_version(pr, "%d", version); + blkid_probe_set_block_size(pr, block_size); + return 0; +} + +const struct blkid_idinfo minix_idinfo = +{ + .name = "minix", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_minix, + .magics = + { + /* version 1 - LE */ + { .magic = "\177\023", .len = 2, .kboff = 1, .sboff = 0x10 }, + { .magic = "\217\023", .len = 2, .kboff = 1, .sboff = 0x10 }, + + /* version 1 - BE */ + { .magic = "\023\177", .len = 2, .kboff = 1, .sboff = 0x10 }, + { .magic = "\023\217", .len = 2, .kboff = 1, .sboff = 0x10 }, + + /* version 2 - LE */ + { .magic = "\150\044", .len = 2, .kboff = 1, .sboff = 0x10 }, + { .magic = "\170\044", .len = 2, .kboff = 1, .sboff = 0x10 }, + + /* version 2 - BE */ + { .magic = "\044\150", .len = 2, .kboff = 1, .sboff = 0x10 }, + { .magic = "\044\170", .len = 2, .kboff = 1, .sboff = 0x10 }, + + /* version 3 - LE */ + { .magic = "\132\115", .len = 2, .kboff = 1, .sboff = 0x18 }, + + /* version 3 - BE */ + { .magic = "\115\132", .len = 2, .kboff = 1, .sboff = 0x18 }, + + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/mpool.c b/libblkid/src/superblocks/mpool.c new file mode 100644 index 0000000..b27569e --- /dev/null +++ b/libblkid/src/superblocks/mpool.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2016 Micron Technology, Inc. + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> +#include "crc32c.h" +#include "superblocks.h" + +#define MAX_MPOOL_NAME_LEN 32 + +struct omf_sb_descriptor { + uint64_t osb_magic; + uint8_t osb_name[MAX_MPOOL_NAME_LEN]; + unsigned char osb_poolid[16]; /* UUID of pool this drive belongs to */ + uint16_t osb_vers; + uint32_t osb_gen; + uint32_t osb_cksum1; /* crc32c of the preceding fields */ +} __attribute__((packed)); + +static int probe_mpool(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct omf_sb_descriptor *osd; + uint32_t sb_crc; + + osd = blkid_probe_get_sb(pr, mag, struct omf_sb_descriptor); + if (!osd) + return errno ? -errno : 1; + + sb_crc = crc32c(~0L, (const void *)osd, + offsetof(struct omf_sb_descriptor, osb_cksum1)); + sb_crc ^= ~0L; + + if (!blkid_probe_verify_csum(pr, sb_crc, le32_to_cpu(osd->osb_cksum1))) + return 1; + + blkid_probe_set_label(pr, osd->osb_name, sizeof(osd->osb_name)); + blkid_probe_set_uuid(pr, osd->osb_poolid); + + return 0; +} + +/* "mpoolDev" in ASCII */ +#define MPOOL_SB_MAGIC "\x6D\x70\x6f\x6f\x6c\x44\x65\x76" + +const struct blkid_idinfo mpool_idinfo = +{ + .name = "mpool", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_mpool, + .magics = + { + { .magic = MPOOL_SB_MAGIC, .len = 8}, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/netware.c b/libblkid/src/superblocks/netware.c new file mode 100644 index 0000000..af81cf5 --- /dev/null +++ b/libblkid/src/superblocks/netware.c @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct netware_super_block { + uint8_t SBH_Signature[4]; + uint16_t SBH_VersionMajor; + uint16_t SBH_VersionMinor; + uint16_t SBH_VersionMediaMajor; + uint16_t SBH_VersionMediaMinor; + uint32_t SBH_ItemsMoved; + uint8_t SBH_InternalID[16]; + uint32_t SBH_PackedSize; + uint32_t SBH_Checksum; + uint32_t supersyncid; + int64_t superlocation[4]; + uint32_t physSizeUsed; + uint32_t sizeUsed; + uint32_t superTimeStamp; + uint32_t reserved0[1]; + int64_t SBH_LoggedPoolDataBlk; + int64_t SBH_PoolDataBlk; + uint8_t SBH_OldInternalID[16]; + uint32_t SBH_PoolToLVStartUTC; + uint32_t SBH_PoolToLVEndUTC; + uint16_t SBH_VersionMediaMajorCreate; + uint16_t SBH_VersionMediaMinorCreate; + uint32_t SBH_BlocksMoved; + uint32_t SBH_TempBTSpBlk; + uint32_t SBH_TempFTSpBlk; + uint32_t SBH_TempFTSpBlk1; + uint32_t SBH_TempFTSpBlk2; + uint32_t nssMagicNumber; + uint32_t poolClassID; + uint32_t poolID; + uint32_t createTime; + int64_t SBH_LoggedVolumeDataBlk; + int64_t SBH_VolumeDataBlk; + int64_t SBH_SystemBeastBlkNum; + uint64_t totalblocks; + uint16_t SBH_Name[64]; + uint8_t SBH_VolumeID[16]; + uint8_t SBH_PoolID[16]; + uint8_t SBH_PoolInternalID[16]; + uint64_t SBH_Lsn; + uint32_t SBH_SS_Enabled; + uint32_t SBH_SS_CreateTime; + uint8_t SBH_SS_OriginalPoolID[16]; + uint8_t SBH_SS_OriginalVolumeID[16]; + uint8_t SBH_SS_Guid[16]; + uint16_t SBH_SS_OriginalName[64]; + uint32_t reserved2[64-(2+46)]; +} __attribute__((__packed__)); + +static int probe_netware(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct netware_super_block *nw; + + nw = blkid_probe_get_sb(pr, mag, struct netware_super_block); + if (!nw) + return errno ? -errno : 1; + + blkid_probe_set_uuid(pr, nw->SBH_PoolID); + + blkid_probe_sprintf_version(pr, "%u.%02u", + le16_to_cpu(nw->SBH_VersionMediaMajor), + le16_to_cpu(nw->SBH_VersionMediaMinor)); + + return 0; +} + +const struct blkid_idinfo netware_idinfo = +{ + .name = "nss", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_netware, + .magics = + { + { .magic = "SPB5", .len = 4, .kboff = 4 }, + { NULL } + } +}; + + diff --git a/libblkid/src/superblocks/nilfs.c b/libblkid/src/superblocks/nilfs.c new file mode 100644 index 0000000..423bd1a --- /dev/null +++ b/libblkid/src/superblocks/nilfs.c @@ -0,0 +1,174 @@ +/* + * Copyright (C) 2010 by Jiro SEKIBA <jir@unicus.jp> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License + */ +#include <stddef.h> +#include <string.h> + +#include "superblocks.h" +#include "crc32.h" + +struct nilfs_super_block { + uint32_t s_rev_level; + uint16_t s_minor_rev_level; + uint16_t s_magic; + + uint16_t s_bytes; + + uint16_t s_flags; + uint32_t s_crc_seed; + uint32_t s_sum; + + uint32_t s_log_block_size; + + uint64_t s_nsegments; + uint64_t s_dev_size; + uint64_t s_first_data_block; + uint32_t s_blocks_per_segment; + uint32_t s_r_segments_percentage; + + uint64_t s_last_cno; + uint64_t s_last_pseg; + uint64_t s_last_seq; + uint64_t s_free_blocks_count; + + uint64_t s_ctime; + + uint64_t s_mtime; + uint64_t s_wtime; + uint16_t s_mnt_count; + uint16_t s_max_mnt_count; + uint16_t s_state; + uint16_t s_errors; + uint64_t s_lastcheck; + + uint32_t s_checkinterval; + uint32_t s_creator_os; + uint16_t s_def_resuid; + uint16_t s_def_resgid; + uint32_t s_first_ino; + + uint16_t s_inode_size; + uint16_t s_dat_entry_size; + uint16_t s_checkpoint_size; + uint16_t s_segment_usage_size; + + uint8_t s_uuid[16]; + char s_volume_name[80]; + + uint32_t s_c_interval; + uint32_t s_c_block_max; + uint32_t s_reserved[192]; +}; + +#define NILFS_SB_MAGIC 0x3434 +#define NILFS_SB_OFFSET 0x400 +#define NILFS_SBB_OFFSET(_sz) ((((_sz) / 0x200) - 8) * 0x200) + +static int nilfs_valid_sb(blkid_probe pr, struct nilfs_super_block *sb, int is_bak) +{ + static unsigned char sum[4]; + const int sumoff = offsetof(struct nilfs_super_block, s_sum); + size_t bytes; + const size_t crc_start = sumoff + 4; + uint32_t crc; + + if (!sb || le16_to_cpu(sb->s_magic) != NILFS_SB_MAGIC) + return 0; + + if (is_bak && blkid_probe_is_wholedisk(pr) && + sb->s_dev_size != pr->size) + return 0; + + bytes = le16_to_cpu(sb->s_bytes); + /* ensure that no underrun can happen in the length parameter + * of the crc32 call or more data are processed than read into + * sb */ + if (bytes < crc_start || bytes > sizeof(struct nilfs_super_block)) + return 0; + + crc = ul_crc32(le32_to_cpu(sb->s_crc_seed), (unsigned char *)sb, sumoff); + crc = ul_crc32(crc, sum, 4); + crc = ul_crc32(crc, (unsigned char *)sb + crc_start, bytes - crc_start); + + return blkid_probe_verify_csum(pr, crc, le32_to_cpu(sb->s_sum)); +} + +static int probe_nilfs2(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct nilfs_super_block *sb, *sbp, *sbb; + int valid[2], swp = 0; + uint64_t magoff; + + /* primary */ + sbp = (struct nilfs_super_block *) blkid_probe_get_buffer( + pr, NILFS_SB_OFFSET, sizeof(struct nilfs_super_block)); + if (!sbp) + return errno ? -errno : 1; + + valid[0] = nilfs_valid_sb(pr, sbp, 0); + + + /* backup */ + sbb = (struct nilfs_super_block *) blkid_probe_get_buffer( + pr, NILFS_SBB_OFFSET(pr->size), sizeof(struct nilfs_super_block)); + if (!sbb) { + valid[1] = 0; + + /* If the primary block is valid then continue and ignore also + * I/O errors for backup block. Note the this is probably CD + * where I/O errors and the end of the disk/session are "normal". + */ + if (!valid[0]) + return errno ? -errno : 1; + } else + valid[1] = nilfs_valid_sb(pr, sbb, 1); + + + /* + * Compare two super blocks and set 1 in swp if the secondary + * super block is valid and newer. Otherwise, set 0 in swp. + */ + if (!valid[0] && !valid[1]) + return 1; + + swp = valid[1] && (!valid[0] || + le64_to_cpu(sbp->s_last_cno) > + le64_to_cpu(sbb->s_last_cno)); + sb = swp ? sbb : sbp; + + DBG(LOWPROBE, ul_debug("nilfs2: primary=%d, backup=%d, swap=%d", + valid[0], valid[1], swp)); + + if (*(sb->s_volume_name) != '\0') + blkid_probe_set_label(pr, (unsigned char *) sb->s_volume_name, + sizeof(sb->s_volume_name)); + + blkid_probe_set_uuid(pr, sb->s_uuid); + blkid_probe_sprintf_version(pr, "%u", le32_to_cpu(sb->s_rev_level)); + + magoff = swp ? NILFS_SBB_OFFSET(pr->size) : NILFS_SB_OFFSET; + magoff += offsetof(struct nilfs_super_block, s_magic); + + if (blkid_probe_set_magic(pr, magoff, sizeof(sb->s_magic), + (unsigned char *) &sb->s_magic)) + return 1; + + if (le32_to_cpu(sb->s_log_block_size) < 32) + blkid_probe_set_block_size(pr, 1024U << le32_to_cpu(sb->s_log_block_size)); + + return 0; +} + +const struct blkid_idinfo nilfs2_idinfo = +{ + .name = "nilfs2", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_nilfs2, + /* default min.size is 128MiB, but 1MiB for "mkfs.nilfs2 -b 1024 -B 16" */ + .minsz = (1024 * 1024), + .magics = BLKID_NONE_MAGIC +}; diff --git a/libblkid/src/superblocks/ntfs.c b/libblkid/src/superblocks/ntfs.c new file mode 100644 index 0000000..dced699 --- /dev/null +++ b/libblkid/src/superblocks/ntfs.c @@ -0,0 +1,253 @@ +/* + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <inttypes.h> + +#include "superblocks.h" + +struct ntfs_bios_parameters { + uint16_t sector_size; /* Size of a sector in bytes. */ + uint8_t sectors_per_cluster; /* Size of a cluster in sectors. */ + uint16_t reserved_sectors; /* zero */ + uint8_t fats; /* zero */ + uint16_t root_entries; /* zero */ + uint16_t sectors; /* zero */ + uint8_t media_type; /* 0xf8 = hard disk */ + uint16_t sectors_per_fat; /* zero */ + uint16_t sectors_per_track; /* irrelevant */ + uint16_t heads; /* irrelevant */ + uint32_t hidden_sectors; /* zero */ + uint32_t large_sectors; /* zero */ +} __attribute__ ((__packed__)); + +struct ntfs_super_block { + uint8_t jump[3]; + uint8_t oem_id[8]; /* magic string */ + + struct ntfs_bios_parameters bpb; + + uint16_t unused[2]; + uint64_t number_of_sectors; + uint64_t mft_cluster_location; + uint64_t mft_mirror_cluster_location; + int8_t clusters_per_mft_record; + uint8_t reserved1[3]; + int8_t cluster_per_index_record; + uint8_t reserved2[3]; + uint64_t volume_serial; + uint32_t checksum; +} __attribute__((packed)); + +struct master_file_table_record { + uint32_t magic; + uint16_t usa_ofs; + uint16_t usa_count; + uint64_t lsn; + uint16_t sequence_number; + uint16_t link_count; + uint16_t attrs_offset; + uint16_t flags; + uint32_t bytes_in_use; + uint32_t bytes_allocated; +} __attribute__((__packed__)); + +struct file_attribute { + uint32_t type; + uint32_t len; + uint8_t non_resident; + uint8_t name_len; + uint16_t name_offset; + uint16_t flags; + uint16_t instance; + uint32_t value_len; + uint16_t value_offset; +} __attribute__((__packed__)); + +#define MFT_RECORD_VOLUME 3 +/* Windows 10 Creators edition has extended the cluster size limit to 2MB */ +#define NTFS_MAX_CLUSTER_SIZE (2 * 1024 * 1024) + +#define MFT_RECORD_ATTR_VOLUME_NAME 0x60 +#define MFT_RECORD_ATTR_END 0xffffffff + +static int __probe_ntfs(blkid_probe pr, const struct blkid_idmag *mag, int save_info) +{ + struct ntfs_super_block *ns; + struct master_file_table_record *mft; + + uint32_t sectors_per_cluster, mft_record_size; + uint16_t sector_size; + uint64_t nr_clusters, off, attr_off; + unsigned char *buf_mft; + + ns = blkid_probe_get_sb(pr, mag, struct ntfs_super_block); + if (!ns) + return errno ? -errno : 1; + + /* + * Check bios parameters block + */ + sector_size = le16_to_cpu(ns->bpb.sector_size); + + if (sector_size < 256 || sector_size > 4096) + return 1; + + switch (ns->bpb.sectors_per_cluster) { + case 1: case 2: case 4: case 8: case 16: case 32: case 64: case 128: + sectors_per_cluster = ns->bpb.sectors_per_cluster; + break; + default: + if ((ns->bpb.sectors_per_cluster < 240) + || (ns->bpb.sectors_per_cluster > 249)) + return 1; + sectors_per_cluster = 1 << (256 - ns->bpb.sectors_per_cluster); + } + + if ((uint16_t) le16_to_cpu(ns->bpb.sector_size) * + sectors_per_cluster > NTFS_MAX_CLUSTER_SIZE) + return 1; + + /* Unused fields must be zero */ + if (le16_to_cpu(ns->bpb.reserved_sectors) + || le16_to_cpu(ns->bpb.root_entries) + || le16_to_cpu(ns->bpb.sectors) + || le16_to_cpu(ns->bpb.sectors_per_fat) + || le32_to_cpu(ns->bpb.large_sectors) + || ns->bpb.fats) + return 1; + + if ((uint8_t) ns->clusters_per_mft_record < 0xe1 + || (uint8_t) ns->clusters_per_mft_record > 0xf7) { + + switch (ns->clusters_per_mft_record) { + case 1: case 2: case 4: case 8: case 16: case 32: case 64: + break; + default: + return 1; + } + } + + if (ns->clusters_per_mft_record > 0) + mft_record_size = ns->clusters_per_mft_record * + sectors_per_cluster * sector_size; + else + mft_record_size = 1 << (0 - ns->clusters_per_mft_record); + + nr_clusters = le64_to_cpu(ns->number_of_sectors) / sectors_per_cluster; + + if ((le64_to_cpu(ns->mft_cluster_location) > nr_clusters) || + (le64_to_cpu(ns->mft_mirror_cluster_location) > nr_clusters)) + return 1; + + + off = le64_to_cpu(ns->mft_cluster_location) * sector_size * + sectors_per_cluster; + + DBG(LOWPROBE, ul_debug("NTFS: sector_size=%"PRIu16", mft_record_size=%"PRIu32", " + "sectors_per_cluster=%"PRIu32", nr_clusters=%"PRIu64" " + "cluster_offset=%"PRIu64"", + sector_size, mft_record_size, + sectors_per_cluster, nr_clusters, + off)); + + if (mft_record_size < 4) + return 1; + + buf_mft = blkid_probe_get_buffer(pr, off, mft_record_size); + if (!buf_mft) + return errno ? -errno : 1; + + if (memcmp(buf_mft, "FILE", 4) != 0) + return 1; + + off += MFT_RECORD_VOLUME * mft_record_size; + + buf_mft = blkid_probe_get_buffer(pr, off, mft_record_size); + if (!buf_mft) + return errno ? -errno : 1; + + if (memcmp(buf_mft, "FILE", 4) != 0) + return 1; + + /* return if caller does not care about UUID and LABEL */ + if (!save_info) + return 0; + + mft = (struct master_file_table_record *) buf_mft; + attr_off = le16_to_cpu(mft->attrs_offset); + + while (attr_off + sizeof(struct file_attribute) <= mft_record_size && + attr_off <= le32_to_cpu(mft->bytes_allocated)) { + + uint32_t attr_len; + struct file_attribute *attr; + + attr = (struct file_attribute *) (buf_mft + attr_off); + attr_len = le32_to_cpu(attr->len); + if (!attr_len) + break; + + if (le32_to_cpu(attr->type) == (uint32_t) MFT_RECORD_ATTR_END) + break; + if (le32_to_cpu(attr->type) == (uint32_t) MFT_RECORD_ATTR_VOLUME_NAME) { + unsigned int val_off = le16_to_cpu(attr->value_offset); + unsigned int val_len = le32_to_cpu(attr->value_len); + unsigned char *val = ((uint8_t *) attr) + val_off; + + if (attr_off + val_off + val_len <= mft_record_size) + blkid_probe_set_utf8label(pr, val, val_len, + UL_ENCODE_UTF16LE); + break; + } + + attr_off += attr_len; + } + + blkid_probe_set_block_size(pr, sector_size); + + blkid_probe_sprintf_uuid(pr, + (unsigned char *) &ns->volume_serial, + sizeof(ns->volume_serial), + "%016" PRIX64, le64_to_cpu(ns->volume_serial)); + return 0; +} + +static int probe_ntfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + return __probe_ntfs(pr, mag, 1); +} + +int blkid_probe_is_ntfs(blkid_probe pr) +{ + const struct blkid_idmag *mag = NULL; + int rc; + + rc = blkid_probe_get_idmag(pr, &ntfs_idinfo, NULL, &mag); + if (rc < 0) + return rc; /* error */ + if (rc != BLKID_PROBE_OK || !mag) + return 0; + + return __probe_ntfs(pr, mag, 0) == 0 ? 1 : 0; +} + +const struct blkid_idinfo ntfs_idinfo = +{ + .name = "ntfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ntfs, + .magics = + { + { .magic = "NTFS ", .len = 8, .sboff = 3 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/nvidia_raid.c b/libblkid/src/superblocks/nvidia_raid.c new file mode 100644 index 0000000..5db8ec2 --- /dev/null +++ b/libblkid/src/superblocks/nvidia_raid.c @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct nv_metadata { + uint8_t vendor[8]; + uint32_t size; + uint32_t chksum; + uint16_t version; +} __attribute__((packed)); + +#define NVIDIA_SIGNATURE "NVIDIA" + +static int probe_nvraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct nv_metadata *nv; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200) - 2) * 0x200; + nv = (struct nv_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct nv_metadata)); + if (!nv) + return errno ? -errno : 1; + + if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0) + return 1; + if (blkid_probe_sprintf_version(pr, "%u", le16_to_cpu(nv->version)) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, sizeof(nv->vendor), + (unsigned char *) nv->vendor)) + return 1; + return 0; +} + +const struct blkid_idinfo nvraid_idinfo = { + .name = "nvidia_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_nvraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/ocfs.c b/libblkid/src/superblocks/ocfs.c new file mode 100644 index 0000000..463ed7b --- /dev/null +++ b/libblkid/src/superblocks/ocfs.c @@ -0,0 +1,216 @@ +/* + * Copyright (C) 1999, 2001 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct ocfs_volume_header { + unsigned char minor_version[4]; + unsigned char major_version[4]; + unsigned char signature[128]; + char mount[128]; + unsigned char mount_len[2]; +} __attribute__((packed)); + +struct ocfs_volume_label { + unsigned char disk_lock[48]; + char label[64]; + unsigned char label_len[2]; + unsigned char vol_id[16]; + unsigned char vol_id_len[2]; +} __attribute__((packed)); + +#define ocfsmajor(o) ( (uint32_t) o.major_version[0] \ + + (((uint32_t) o.major_version[1]) << 8) \ + + (((uint32_t) o.major_version[2]) << 16) \ + + (((uint32_t) o.major_version[3]) << 24)) + +#define ocfsminor(o) ( (uint32_t) o.minor_version[0] \ + + (((uint32_t) o.minor_version[1]) << 8) \ + + (((uint32_t) o.minor_version[2]) << 16) \ + + (((uint32_t) o.minor_version[3]) << 24)) + +#define ocfslabellen(o) ((uint32_t)o.label_len[0] + (((uint32_t) o.label_len[1]) << 8)) +#define ocfsmountlen(o) ((uint32_t)o.mount_len[0] + (((uint32_t) o.mount_len[1]) << 8)) + +struct ocfs2_super_block { + uint8_t i_signature[8]; + uint32_t i_generation; + int16_t i_suballoc_slot; + uint16_t i_suballoc_bit; + uint32_t i_reserved0; + uint32_t i_clusters; + uint32_t i_uid; + uint32_t i_gid; + uint64_t i_size; + uint16_t i_mode; + uint16_t i_links_count; + uint32_t i_flags; + uint64_t i_atime; + uint64_t i_ctime; + uint64_t i_mtime; + uint64_t i_dtime; + uint64_t i_blkno; + uint64_t i_last_eb_blk; + uint32_t i_fs_generation; + uint32_t i_atime_nsec; + uint32_t i_ctime_nsec; + uint32_t i_mtime_nsec; + uint64_t i_reserved1[9]; + uint64_t i_pad1; + uint16_t s_major_rev_level; + uint16_t s_minor_rev_level; + uint16_t s_mnt_count; + int16_t s_max_mnt_count; + uint16_t s_state; + uint16_t s_errors; + uint32_t s_checkinterval; + uint64_t s_lastcheck; + uint32_t s_creator_os; + uint32_t s_feature_compat; + uint32_t s_feature_incompat; + uint32_t s_feature_ro_compat; + uint64_t s_root_blkno; + uint64_t s_system_dir_blkno; + uint32_t s_blocksize_bits; + uint32_t s_clustersize_bits; + uint16_t s_max_slots; + uint16_t s_reserved1; + uint32_t s_reserved2; + uint64_t s_first_cluster_group; + uint8_t s_label[64]; + uint8_t s_uuid[16]; +} __attribute__((packed)); + +struct oracle_asm_disk_label { + char dummy[32]; + char dl_tag[8]; + char dl_id[24]; +} __attribute__((packed)); + +static int probe_ocfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + unsigned char *buf; + struct ocfs_volume_header ovh; + struct ocfs_volume_label ovl; + uint32_t maj, min; + + /* header */ + buf = blkid_probe_get_buffer(pr, mag->kboff << 10, + sizeof(struct ocfs_volume_header)); + if (!buf) + return errno ? -errno : 1; + memcpy(&ovh, buf, sizeof(ovh)); + + /* label */ + buf = blkid_probe_get_buffer(pr, (mag->kboff << 10) + 512, + sizeof(struct ocfs_volume_label)); + if (!buf) + return errno ? -errno : 1; + memcpy(&ovl, buf, sizeof(ovl)); + + maj = ocfsmajor(ovh); + min = ocfsminor(ovh); + + if (maj == 1) + blkid_probe_set_value(pr, "SEC_TYPE", + (unsigned char *) "ocfs1", sizeof("ocfs1")); + else if (maj >= 9) + blkid_probe_set_value(pr, "SEC_TYPE", + (unsigned char *) "ntocfs", sizeof("ntocfs")); + + blkid_probe_set_label(pr, (unsigned char *) ovl.label, + ocfslabellen(ovl)); + blkid_probe_set_value(pr, "MOUNT", (unsigned char *) ovh.mount, + ocfsmountlen(ovh)); + blkid_probe_set_uuid(pr, ovl.vol_id); + blkid_probe_sprintf_version(pr, "%u.%u", maj, min); + return 0; +} + +static int probe_ocfs2(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct ocfs2_super_block *osb; + + osb = blkid_probe_get_sb(pr, mag, struct ocfs2_super_block); + if (!osb) + return errno ? -errno : 1; + + blkid_probe_set_label(pr, (unsigned char *) osb->s_label, sizeof(osb->s_label)); + blkid_probe_set_uuid(pr, osb->s_uuid); + + blkid_probe_sprintf_version(pr, "%u.%u", + le16_to_cpu(osb->s_major_rev_level), + le16_to_cpu(osb->s_minor_rev_level)); + + if (le32_to_cpu(osb->s_blocksize_bits) < 32) + blkid_probe_set_block_size(pr, 1U << le32_to_cpu(osb->s_blocksize_bits)); + + return 0; +} + +static int probe_oracleasm(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct oracle_asm_disk_label *dl; + + dl = blkid_probe_get_sb(pr, mag, struct oracle_asm_disk_label); + if (!dl) + return errno ? -errno : 1; + + blkid_probe_set_label(pr, (unsigned char *) dl->dl_id, sizeof(dl->dl_id)); + return 0; +} + + +const struct blkid_idinfo ocfs_idinfo = +{ + .name = "ocfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ocfs, + .minsz = 14000 * 1024, + .magics = + { + { .magic = "OracleCFS", .len = 9, .kboff = 8 }, + { NULL } + } +}; + +const struct blkid_idinfo ocfs2_idinfo = +{ + .name = "ocfs2", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ocfs2, + .minsz = 14000 * 1024, + .magics = + { + { .magic = "OCFSV2", .len = 6, .kboff = 1 }, + { .magic = "OCFSV2", .len = 6, .kboff = 2 }, + { .magic = "OCFSV2", .len = 6, .kboff = 4 }, + { .magic = "OCFSV2", .len = 6, .kboff = 8 }, + { NULL } + } +}; + +/* Oracle ASM (Automatic Storage Management) */ +const struct blkid_idinfo oracleasm_idinfo = +{ + .name = "oracleasm", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_oracleasm, + .magics = + { + { .magic = "ORCLDISK", .len = 8, .sboff = 32 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/promise_raid.c b/libblkid/src/superblocks/promise_raid.c new file mode 100644 index 0000000..75f3a20 --- /dev/null +++ b/libblkid/src/superblocks/promise_raid.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct promise_metadata { + uint8_t sig[24]; +}; + +#define PDC_CONFIG_OFF 0x1200 +#define PDC_SIGNATURE "Promise Technology, Inc." + +static int probe_pdcraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + size_t i; + static unsigned int sectors[] = { + 63, 255, 256, 16, 399, 591, 675, 735, 911, 974, 991, 951, 3087 + }; + uint64_t nsectors; + + if (pr->size < 0x40000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + nsectors = pr->size >> 9; + + for (i = 0; i < ARRAY_SIZE(sectors); i++) { + uint64_t off; + struct promise_metadata *pdc; + + if (nsectors < sectors[i]) + return 1; + + off = (nsectors - sectors[i]) << 9; + pdc = (struct promise_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct promise_metadata)); + if (!pdc) + return errno ? -errno : 1; + + if (memcmp(pdc->sig, PDC_SIGNATURE, + sizeof(PDC_SIGNATURE) - 1) == 0) { + + if (blkid_probe_set_magic(pr, off, sizeof(pdc->sig), + (unsigned char *) pdc->sig)) + return 1; + return 0; + } + } + return 1; +} + +const struct blkid_idinfo pdcraid_idinfo = { + .name = "promise_fasttrack_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_pdcraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/refs.c b/libblkid/src/superblocks/refs.c new file mode 100644 index 0000000..ea81f20 --- /dev/null +++ b/libblkid/src/superblocks/refs.c @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2013 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <inttypes.h> + +#include "superblocks.h" + + +const struct blkid_idinfo refs_idinfo = +{ + .name = "ReFS", + .usage = BLKID_USAGE_FILESYSTEM, + .magics = + { + { .magic = "\000\000\000ReFS\000", .len = 8 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/reiserfs.c b/libblkid/src/superblocks/reiserfs.c new file mode 100644 index 0000000..6c5e5b0 --- /dev/null +++ b/libblkid/src/superblocks/reiserfs.c @@ -0,0 +1,136 @@ +/* + * Copyright (C) 1999, 2001 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct reiserfs_super_block { + uint32_t rs_blocks_count; + uint32_t rs_free_blocks; + uint32_t rs_root_block; + uint32_t rs_journal_block; + uint32_t rs_journal_dev; + uint32_t rs_orig_journal_size; + uint32_t rs_dummy2[5]; + uint16_t rs_blocksize; + uint16_t rs_dummy3[3]; + unsigned char rs_magic[12]; + uint32_t rs_dummy4[5]; + unsigned char rs_uuid[16]; + char rs_label[16]; +} __attribute__((packed)); + +struct reiser4_super_block { + unsigned char rs4_magic[16]; + uint8_t rs4_dummy[3]; + uint8_t rs4_blocksize; + unsigned char rs4_uuid[16]; + unsigned char rs4_label[16]; + uint64_t rs4_dummy2; +} __attribute__((packed)); + +static int probe_reiser(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct reiserfs_super_block *rs; + unsigned int blocksize; + + rs = blkid_probe_get_sb(pr, mag, struct reiserfs_super_block); + if (!rs) + return errno ? -errno : 1; + + blocksize = le16_to_cpu(rs->rs_blocksize); + + /* The blocksize must be at least 512B */ + if ((blocksize >> 9) == 0) + return 1; + + /* If the superblock is inside the journal, we have the wrong one */ + if (mag->kboff / (blocksize >> 9) > le32_to_cpu(rs->rs_journal_block) / 2) + return 1; + + /* LABEL/UUID are only valid for later versions of Reiserfs v3.6. */ + if (mag->magic[6] == '2' || mag->magic[6] == '3') { + if (*rs->rs_label) + blkid_probe_set_label(pr, + (unsigned char *) rs->rs_label, + sizeof(rs->rs_label)); + blkid_probe_set_uuid(pr, rs->rs_uuid); + } + + if (mag->magic[6] == '3') + blkid_probe_set_version(pr, "JR"); + else if (mag->magic[6] == '2') + blkid_probe_set_version(pr, "3.6"); + else + blkid_probe_set_version(pr, "3.5"); + + blkid_probe_set_block_size(pr, blocksize); + + return 0; +} + +static int probe_reiser4(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct reiser4_super_block *rs4; + unsigned int blocksize; + + rs4 = blkid_probe_get_sb(pr, mag, struct reiser4_super_block); + if (!rs4) + return errno ? -errno : 1; + + blocksize = rs4->rs4_blocksize * 256; + + if (*rs4->rs4_label) + blkid_probe_set_label(pr, rs4->rs4_label, sizeof(rs4->rs4_label)); + blkid_probe_set_uuid(pr, rs4->rs4_uuid); + blkid_probe_set_version(pr, "4"); + + blkid_probe_set_block_size(pr, blocksize); + + return 0; +} + + +const struct blkid_idinfo reiser_idinfo = +{ + .name = "reiserfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_reiser, + .minsz = 128 * 1024, + .magics = + { + { .magic = "ReIsErFs", .len = 8, .kboff = 8, .sboff = 0x34 }, + { .magic = "ReIsEr2Fs", .len = 9, .kboff = 64, .sboff = 0x34 }, + { .magic = "ReIsEr3Fs", .len = 9, .kboff = 64, .sboff = 0x34 }, + { .magic = "ReIsErFs", .len = 8, .kboff = 64, .sboff = 0x34 }, + { .magic = "ReIsErFs", .len = 8, .kboff = 8, .sboff = 20 }, + { NULL } + } +}; + +const struct blkid_idinfo reiser4_idinfo = +{ + .name = "reiser4", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_reiser4, + .minsz = 128 * 1024, + .magics = + { + { .magic = "ReIsEr4", .len = 7, .kboff = 64 }, + { NULL } + } +}; + + + + diff --git a/libblkid/src/superblocks/romfs.c b/libblkid/src/superblocks/romfs.c new file mode 100644 index 0000000..1c2ac43 --- /dev/null +++ b/libblkid/src/superblocks/romfs.c @@ -0,0 +1,54 @@ +/* + * Copyright (C) 1999, 2001 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct romfs_super_block { + unsigned char ros_magic[8]; + uint32_t ros_dummy1[2]; + unsigned char ros_volume[16]; +} __attribute__((packed)); + +static int probe_romfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct romfs_super_block *ros; + + ros = blkid_probe_get_sb(pr, mag, struct romfs_super_block); + if (!ros) + return errno ? -errno : 1; + + if (*((char *) ros->ros_volume) != '\0') + blkid_probe_set_label(pr, ros->ros_volume, + sizeof(ros->ros_volume)); + + blkid_probe_set_block_size(pr, 1024); + + return 0; +} + +const struct blkid_idinfo romfs_idinfo = +{ + .name = "romfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_romfs, + .magics = + { + { .magic = "-rom1fs-", .len = 8 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/silicon_raid.c b/libblkid/src/superblocks/silicon_raid.c new file mode 100644 index 0000000..399eea8 --- /dev/null +++ b/libblkid/src/superblocks/silicon_raid.c @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> +#include <stddef.h> + +#include "superblocks.h" + +struct silicon_metadata { + uint8_t unknown0[0x2E]; + uint8_t ascii_version[0x36 - 0x2E]; + int8_t diskname[0x56 - 0x36]; + int8_t unknown1[0x60 - 0x56]; + uint32_t magic; + int8_t unknown1a[0x6C - 0x64]; + uint32_t array_sectors_low; + uint32_t array_sectors_high; + int8_t unknown2[0x78 - 0x74]; + uint32_t thisdisk_sectors; + int8_t unknown3[0x100 - 0x7C]; + int8_t unknown4[0x104 - 0x100]; + uint16_t product_id; + uint16_t vendor_id; + uint16_t minor_ver; + uint16_t major_ver; + uint8_t seconds; + uint8_t minutes; + uint8_t hour; + uint8_t day; + uint8_t month; + uint8_t year; + uint16_t raid0_stride; + int8_t unknown6[0x116 - 0x114]; + uint8_t disk_number; + uint8_t type; /* SILICON_TYPE_* */ + int8_t drives_per_striped_set; + int8_t striped_set_number; + int8_t drives_per_mirrored_set; + int8_t mirrored_set_number; + uint32_t rebuild_ptr_low; + uint32_t rebuild_ptr_high; + uint32_t incarnation_no; + uint8_t member_status; + uint8_t mirrored_set_state; /* SILICON_MIRROR_* */ + uint8_t reported_device_location; + uint8_t idechannel; + uint8_t auto_rebuild; + uint8_t unknown8; + uint8_t text_type[0x13E - 0x12E]; + uint16_t checksum1; + int8_t assumed_zeros[0x1FE - 0x140]; + uint16_t checksum2; +} __attribute__((packed)); + +#define SILICON_MAGIC 0x2F000000 + +static uint16_t silraid_checksum(struct silicon_metadata *sil) +{ + int sum = 0; + unsigned short count = offsetof(struct silicon_metadata, checksum1) / 2; + unsigned char *ptr = (unsigned char *) sil; + + while (count--) { + uint16_t val; + + memcpy(&val, ptr, sizeof(uint16_t)); + sum += le16_to_cpu(val); + + ptr += sizeof(uint16_t); + } + + return (-sum & 0xFFFF); +} + +static int probe_silraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct silicon_metadata *sil; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200) - 1) * 0x200; + + sil = (struct silicon_metadata *) + blkid_probe_get_buffer(pr, off, + sizeof(struct silicon_metadata)); + if (!sil) + return errno ? -errno : 1; + + if (le32_to_cpu(sil->magic) != SILICON_MAGIC) + return 1; + if (sil->disk_number >= 8) + return 1; + if (!blkid_probe_verify_csum(pr, silraid_checksum(sil), le16_to_cpu(sil->checksum1))) + return 1; + + if (blkid_probe_sprintf_version(pr, "%u.%u", + le16_to_cpu(sil->major_ver), + le16_to_cpu(sil->minor_ver)) != 0) + return 1; + + if (blkid_probe_set_magic(pr, + off + offsetof(struct silicon_metadata, magic), + sizeof(sil->magic), + (unsigned char *) &sil->magic)) + return 1; + return 0; +} + +const struct blkid_idinfo silraid_idinfo = { + .name = "silicon_medley_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_silraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/squashfs.c b/libblkid/src/superblocks/squashfs.c new file mode 100644 index 0000000..4db8424 --- /dev/null +++ b/libblkid/src/superblocks/squashfs.c @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "bitops.h" /* swab16() */ +#include "superblocks.h" + +struct sqsh_super_block { + uint32_t s_magic; + uint32_t inodes; + uint32_t bytes_used_2; + uint32_t uid_start_2; + uint32_t guid_start_2; + uint32_t inode_table_start_2; + uint32_t directory_table_start_2; + uint16_t s_major; + uint16_t s_minor; +} __attribute__((packed)); + +static int probe_squashfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct sqsh_super_block *sq; + uint16_t vermaj; + uint16_t vermin; + + sq = blkid_probe_get_sb(pr, mag, struct sqsh_super_block); + if (!sq) + return errno ? -errno : 1; + + vermaj = le16_to_cpu(sq->s_major); + vermin = le16_to_cpu(sq->s_minor); + if (vermaj < 4) + return 1; + + blkid_probe_sprintf_version(pr, "%u.%u", vermaj, vermin); + + return 0; +} + +static int probe_squashfs3(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct sqsh_super_block *sq; + uint16_t vermaj; + uint16_t vermin; + + sq = blkid_probe_get_sb(pr, mag, struct sqsh_super_block); + if (!sq) + return errno ? -errno : 1; + + if (strcmp(mag->magic, "sqsh") == 0) { + vermaj = be16_to_cpu(sq->s_major); + vermin = be16_to_cpu(sq->s_minor); + } else { + vermaj = le16_to_cpu(sq->s_major); + vermin = le16_to_cpu(sq->s_minor); + } + + if (vermaj > 3) + return 1; + + blkid_probe_sprintf_version(pr, "%u.%u", vermaj, vermin); + + blkid_probe_set_block_size(pr, 1024); + + return 0; +} + +const struct blkid_idinfo squashfs_idinfo = +{ + .name = "squashfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_squashfs, + .magics = + { + { .magic = "hsqs", .len = 4 }, + { NULL } + } +}; + +const struct blkid_idinfo squashfs3_idinfo = +{ + .name = "squashfs3", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_squashfs3, + .magics = + { + { .magic = "sqsh", .len = 4 }, /* big endian */ + { .magic = "hsqs", .len = 4 }, /* little endian */ + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/stratis.c b/libblkid/src/superblocks/stratis.c new file mode 100644 index 0000000..fe4a452 --- /dev/null +++ b/libblkid/src/superblocks/stratis.c @@ -0,0 +1,127 @@ +/* + * Copyright (C) 2018 Tony Asleson <tasleson@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +/* + * Specification for on disk format + * https://stratis-storage.github.io/StratisSoftwareDesign.pdf + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> +#include <inttypes.h> + +#include "superblocks.h" +#include "crc32c.h" + +/* Macro to avoid error in struct declaration. */ +#define STRATIS_UUID_LEN 32 +/* Contains 4 hyphens and trailing null byte. */ +const int STRATIS_UUID_STR_LEN = 37; + +struct stratis_sb { + uint32_t crc32; + uint8_t magic[16]; + uint64_t sectors; + uint8_t reserved[4]; + uint8_t pool_uuid[STRATIS_UUID_LEN]; + uint8_t dev_uuid[STRATIS_UUID_LEN]; + uint64_t mda_size; + uint64_t reserved_size; + uint64_t flags; + uint64_t initialization_time; +} __attribute__ ((__packed__)); + +#define BS 512 +#define FIRST_COPY_OFFSET BS +#define SECOND_COPY_OFFSET (BS * 9) +#define SB_AREA_SIZE (BS * 16) + +const char STRATIS_MAGIC[] = "!Stra0tis\x86\xff\x02^\x41rh"; +#define MAGIC_LEN (sizeof(STRATIS_MAGIC) - 1) + +#define _MAGIC_OFFSET (offsetof(const struct stratis_sb, magic)) +#define MAGIC_OFFSET_COPY_1 (FIRST_COPY_OFFSET + _MAGIC_OFFSET) +#define MAGIC_OFFSET_COPY_2 (SECOND_COPY_OFFSET + _MAGIC_OFFSET) + +static int stratis_valid_sb(uint8_t *p) +{ + const struct stratis_sb *stratis = (const struct stratis_sb *)p; + uint32_t crc = 0; + + /* generate CRC from byte position 4 for length 508 == 512 byte sector */ + crc = crc32c(~0L, p + sizeof(stratis->crc32), + BS - sizeof(stratis->crc32)); + crc ^= ~0L; + + return crc == le32_to_cpu(stratis->crc32); +} + +/* + * Format UUID string representation to include hyphens given that Stratis stores + * UUIDs without hyphens in the superblock to keep the UUID length a power of 2. + */ +static void stratis_format_uuid(const unsigned char *src_uuid, + unsigned char *dst_uuid) +{ + int i; + + for (i = 0; i < STRATIS_UUID_LEN; i++) { + *dst_uuid++ = *src_uuid++; + if (i == 7 || i == 11 || i == 15 || i == 19) + *dst_uuid ++ = '-'; + } + *dst_uuid = '\0'; +} + +static int probe_stratis(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + const struct stratis_sb *stratis = NULL; + uint8_t *buf = blkid_probe_get_buffer(pr, 0, SB_AREA_SIZE); + unsigned char uuid[STRATIS_UUID_STR_LEN]; + + if (!buf) + return errno ? -errno : 1; + + if (stratis_valid_sb(buf + FIRST_COPY_OFFSET)) { + stratis = (const struct stratis_sb *)(buf + FIRST_COPY_OFFSET); + } else { + if (!stratis_valid_sb(buf + SECOND_COPY_OFFSET)) + return 1; + + stratis = (const struct stratis_sb *) + (buf + SECOND_COPY_OFFSET); + } + + stratis_format_uuid(stratis->dev_uuid, uuid); + blkid_probe_strncpy_uuid(pr, uuid, sizeof(uuid)); + + stratis_format_uuid(stratis->pool_uuid, uuid); + blkid_probe_set_value(pr, "POOL_UUID", uuid, sizeof(uuid)); + + blkid_probe_sprintf_value(pr, "BLOCKDEV_SECTORS", "%" PRIu64, + le64_to_cpu(stratis->sectors)); + blkid_probe_sprintf_value(pr, "BLOCKDEV_INITTIME", "%" PRIu64, + le64_to_cpu(stratis->initialization_time)); + return 0; +} + +const struct blkid_idinfo stratis_idinfo = { + .name = "stratis", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_stratis, + .minsz = SB_AREA_SIZE, + .magics = { + { .magic = STRATIS_MAGIC, .len = MAGIC_LEN, + .sboff = MAGIC_OFFSET_COPY_1}, + { .magic = STRATIS_MAGIC, .len = MAGIC_LEN, + .sboff = MAGIC_OFFSET_COPY_2}, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/superblocks.c b/libblkid/src/superblocks/superblocks.c new file mode 100644 index 0000000..b87e01e --- /dev/null +++ b/libblkid/src/superblocks/superblocks.c @@ -0,0 +1,882 @@ +/* + * superblocks.c - reads information from filesystem and raid superblocks + * + * Copyright (C) 2008-2009 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <ctype.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <stdint.h> +#include <stdarg.h> + +#include "superblocks.h" + +/** + * SECTION:superblocks + * @title: Superblocks probing + * @short_description: filesystems and raids superblocks probing. + * + * The library API has been originally designed for superblocks probing only. + * This is reason why some *deprecated* superblock specific functions don't use + * '_superblocks_' namespace in the function name. Please, don't use these + * functions in new code. + * + * The 'superblocks' probers support NAME=value (tags) interface only. The + * superblocks probing is enabled by default (and controlled by + * blkid_probe_enable_superblocks()). + * + * Currently supported tags: + * + * @TYPE: filesystem type + * + * @SEC_TYPE: secondary filesystem type + * + * @LABEL: filesystem label + * + * @LABEL_RAW: raw label from FS superblock + * + * @UUID: filesystem UUID (lower case) + * + * @UUID_SUB: subvolume uuid (e.g. btrfs) + * + * @LOGUUID: external log UUID (e.g. xfs) + * + * @UUID_RAW: raw UUID from FS superblock + * + * @EXT_JOURNAL: external journal UUID + * + * @USAGE: usage string: "raid", "filesystem", ... + * + * @VERSION: filesystem version + * + * @MOUNT: cluster mount name (?) -- ocfs only + * + * @SBMAGIC: super block magic string + * + * @SBMAGIC_OFFSET: offset of SBMAGIC + * + * @FSSIZE: size of filesystem [not-implemented yet] + * + * @SYSTEM_ID: ISO9660 system identifier + * + * @PUBLISHER_ID: ISO9660 publisher identifier + * + * @APPLICATION_ID: ISO9660 application identifier + * + * @BOOT_SYSTEM_ID: ISO9660 boot system identifier + * + * @BLOCK_SIZE: minimal block size accessible by file system + */ + +static int superblocks_probe(blkid_probe pr, struct blkid_chain *chn); +static int superblocks_safeprobe(blkid_probe pr, struct blkid_chain *chn); + +static int blkid_probe_set_usage(blkid_probe pr, int usage); + + +/* + * Superblocks chains probing functions + */ +static const struct blkid_idinfo *idinfos[] = +{ + /* RAIDs */ + &linuxraid_idinfo, + &ddfraid_idinfo, + &iswraid_idinfo, + &lsiraid_idinfo, + &viaraid_idinfo, + &silraid_idinfo, + &nvraid_idinfo, + &pdcraid_idinfo, + &highpoint45x_idinfo, + &highpoint37x_idinfo, + &adraid_idinfo, + &jmraid_idinfo, + + &bcache_idinfo, + &bluestore_idinfo, + &drbd_idinfo, + &drbdmanage_idinfo, + &drbdproxy_datalog_idinfo, + &lvm2_idinfo, + &lvm1_idinfo, + &snapcow_idinfo, + &verity_hash_idinfo, + &integrity_idinfo, + &luks_idinfo, + &vmfs_volume_idinfo, + &ubi_idinfo, + &vdo_idinfo, + &stratis_idinfo, + &bitlocker_idinfo, + + /* Filesystems */ + &vfat_idinfo, + &swsuspend_idinfo, + &swap_idinfo, + &xfs_idinfo, + &xfs_log_idinfo, + &exfs_idinfo, + &ext4dev_idinfo, + &ext4_idinfo, + &ext3_idinfo, + &ext2_idinfo, + &jbd_idinfo, + &reiser_idinfo, + &reiser4_idinfo, + &jfs_idinfo, + &udf_idinfo, + &iso9660_idinfo, + &zfs_idinfo, + &hfsplus_idinfo, + &hfs_idinfo, + &ufs_idinfo, + &hpfs_idinfo, + &sysv_idinfo, + &xenix_idinfo, + &ntfs_idinfo, + &refs_idinfo, + &cramfs_idinfo, + &romfs_idinfo, + &minix_idinfo, + &gfs_idinfo, + &gfs2_idinfo, + &ocfs_idinfo, + &ocfs2_idinfo, + &oracleasm_idinfo, + &vxfs_idinfo, + &squashfs_idinfo, + &squashfs3_idinfo, + &netware_idinfo, + &btrfs_idinfo, + &ubifs_idinfo, + &bfs_idinfo, + &vmfs_fs_idinfo, + &befs_idinfo, + &nilfs2_idinfo, + &exfat_idinfo, + &f2fs_idinfo, + &mpool_idinfo, + &apfs_idinfo, + &zonefs_idinfo, + &erofs_idinfo +}; + +/* + * Driver definition + */ +const struct blkid_chaindrv superblocks_drv = { + .id = BLKID_CHAIN_SUBLKS, + .name = "superblocks", + .dflt_enabled = TRUE, + .dflt_flags = BLKID_SUBLKS_DEFAULT, + .idinfos = idinfos, + .nidinfos = ARRAY_SIZE(idinfos), + .has_fltr = TRUE, + .probe = superblocks_probe, + .safeprobe = superblocks_safeprobe, +}; + +/** + * blkid_probe_enable_superblocks: + * @pr: probe + * @enable: TRUE/FALSE + * + * Enables/disables the superblocks probing for non-binary interface. + * + * Returns: 0 on success, or -1 in case of error. + */ +int blkid_probe_enable_superblocks(blkid_probe pr, int enable) +{ + pr->chains[BLKID_CHAIN_SUBLKS].enabled = enable; + return 0; +} + +/** + * blkid_probe_set_superblocks_flags: + * @pr: prober + * @flags: BLKID_SUBLKS_* flags + * + * Sets probing flags to the superblocks prober. This function is optional, the + * default are BLKID_SUBLKS_DEFAULTS flags. + * + * Returns: 0 on success, or -1 in case of error. + */ +int blkid_probe_set_superblocks_flags(blkid_probe pr, int flags) +{ + pr->chains[BLKID_CHAIN_SUBLKS].flags = flags; + return 0; +} + +/** + * blkid_probe_reset_superblocks_filter: + * @pr: prober + * + * Resets superblocks probing filter + * + * Returns: 0 on success, or -1 in case of error. + */ +int blkid_probe_reset_superblocks_filter(blkid_probe pr) +{ + return __blkid_probe_reset_filter(pr, BLKID_CHAIN_SUBLKS); +} + +/** + * blkid_probe_invert_superblocks_filter: + * @pr: prober + * + * Inverts superblocks probing filter + * + * Returns: 0 on success, or -1 in case of error. + */ +int blkid_probe_invert_superblocks_filter(blkid_probe pr) +{ + return __blkid_probe_invert_filter(pr, BLKID_CHAIN_SUBLKS); +} + +/** + * blkid_probe_filter_superblocks_type: + * @pr: prober + * @flag: filter BLKID_FLTR_{NOTIN,ONLYIN} flag + * @names: NULL terminated array of probing function names (e.g. "vfat"). + * + * %BLKID_FLTR_NOTIN - probe for all items which are NOT IN @names; + * + * %BLKID_FLTR_ONLYIN - probe for items which are IN @names + * + * Returns: 0 on success, or -1 in case of error. + */ +int blkid_probe_filter_superblocks_type(blkid_probe pr, int flag, char *names[]) +{ + return __blkid_probe_filter_types(pr, BLKID_CHAIN_SUBLKS, flag, names); +} + +/** + * blkid_probe_filter_superblocks_usage: + * @pr: prober + * @flag: filter BLKID_FLTR_{NOTIN,ONLYIN} flag + * @usage: BLKID_USAGE_* flags + * + * %BLKID_FLTR_NOTIN - probe for all items which are NOT IN @usage; + * + * %BLKID_FLTR_ONLYIN - probe for items which are IN @usage + * + * Returns: 0 on success, or -1 in case of error. + */ +int blkid_probe_filter_superblocks_usage(blkid_probe pr, int flag, int usage) +{ + unsigned long *fltr; + struct blkid_chain *chn; + size_t i; + + fltr = blkid_probe_get_filter(pr, BLKID_CHAIN_SUBLKS, TRUE); + if (!fltr) + return -1; + + chn = &pr->chains[BLKID_CHAIN_SUBLKS]; + + for (i = 0; i < chn->driver->nidinfos; i++) { + const struct blkid_idinfo *id = chn->driver->idinfos[i]; + + if (id->usage & usage) { + if (flag & BLKID_FLTR_NOTIN) + blkid_bmp_set_item(chn->fltr, i); + } else if (flag & BLKID_FLTR_ONLYIN) + blkid_bmp_set_item(chn->fltr, i); + } + DBG(LOWPROBE, ul_debug("a new probing usage-filter initialized")); + return 0; +} + +/** + * blkid_known_fstype: + * @fstype: filesystem name + * + * Returns: 1 for known filesystems, or 0 for unknown filesystem. + */ +int blkid_known_fstype(const char *fstype) +{ + size_t i; + + for (i = 0; i < ARRAY_SIZE(idinfos); i++) { + const struct blkid_idinfo *id = idinfos[i]; + if (strcmp(id->name, fstype) == 0) + return 1; + } + return 0; +} + +/** + * blkid_superblocks_get_name: + * @idx: number >= 0 + * @name: returns name of supported filesystem/raid (optional) + * @usage: returns BLKID_USAGE_* flags, (optional) + * + * Returns: -1 if @idx is out of range, or 0 on success. + */ +int blkid_superblocks_get_name(size_t idx, const char **name, int *usage) +{ + if (idx < ARRAY_SIZE(idinfos)) { + if (name) + *name = idinfos[idx]->name; + if (usage) + *usage = idinfos[idx]->usage; + return 0; + } + return -1; +} + +/* + * The blkid_do_probe() backend. + */ +static int superblocks_probe(blkid_probe pr, struct blkid_chain *chn) +{ + size_t i; + int rc = BLKID_PROBE_NONE; + + if (chn->idx < -1) + return -EINVAL; + + blkid_probe_chain_reset_values(pr, chn); + + if (pr->flags & BLKID_FL_NOSCAN_DEV) { + DBG(LOWPROBE, ul_debug("*** ignore (noscan flag)")); + return BLKID_PROBE_NONE; + } + + if (pr->size <= 0 || (pr->size <= 1024 && !S_ISCHR(pr->mode))) { + /* Ignore very very small block devices or regular files (e.g. + * extended partitions). Note that size of the UBI char devices + * is 1 byte */ + DBG(LOWPROBE, ul_debug("*** ignore (size <= 1024)")); + return BLKID_PROBE_NONE; + } + + DBG(LOWPROBE, ul_debug("--> starting probing loop [SUBLKS idx=%d]", + chn->idx)); + + i = chn->idx < 0 ? 0 : chn->idx + 1U; + + for ( ; i < ARRAY_SIZE(idinfos); i++) { + const struct blkid_idinfo *id; + const struct blkid_idmag *mag = NULL; + uint64_t off = 0; + + chn->idx = i; + id = idinfos[i]; + + if (chn->fltr && blkid_bmp_get_item(chn->fltr, i)) { + DBG(LOWPROBE, ul_debug("filter out: %s", id->name)); + rc = BLKID_PROBE_NONE; + continue; + } + + if (id->minsz && (unsigned)id->minsz > pr->size) { + rc = BLKID_PROBE_NONE; + continue; /* the device is too small */ + } + + /* don't probe for RAIDs, swap or journal on CD/DVDs */ + if ((id->usage & (BLKID_USAGE_RAID | BLKID_USAGE_OTHER)) && + blkid_probe_is_cdrom(pr)) { + rc = BLKID_PROBE_NONE; + continue; + } + + /* don't probe for RAIDs on floppies */ + if ((id->usage & BLKID_USAGE_RAID) && blkid_probe_is_tiny(pr)) { + rc = BLKID_PROBE_NONE; + continue; + } + + DBG(LOWPROBE, ul_debug("[%zd] %s:", i, id->name)); + + rc = blkid_probe_get_idmag(pr, id, &off, &mag); + if (rc < 0) + break; + if (rc != BLKID_PROBE_OK) + continue; + + /* final check by probing function */ + if (id->probefunc) { + DBG(LOWPROBE, ul_debug("\tcall probefunc()")); + rc = id->probefunc(pr, mag); + if (rc != BLKID_PROBE_OK) { + blkid_probe_chain_reset_values(pr, chn); + if (rc < 0) + break; + continue; + } + } + + /* all checks passed */ + if (chn->flags & BLKID_SUBLKS_TYPE) + rc = blkid_probe_set_value(pr, "TYPE", + (const unsigned char *) id->name, + strlen(id->name) + 1); + + if (!rc) + rc = blkid_probe_set_usage(pr, id->usage); + + if (!rc && mag) + rc = blkid_probe_set_magic(pr, off, mag->len, + (const unsigned char *) mag->magic); + if (rc) { + blkid_probe_chain_reset_values(pr, chn); + DBG(LOWPROBE, ul_debug("failed to set result -- ignore")); + continue; + } + + DBG(LOWPROBE, ul_debug("<-- leaving probing loop (type=%s) [SUBLKS idx=%d]", + id->name, chn->idx)); + return BLKID_PROBE_OK; + } + + DBG(LOWPROBE, ul_debug("<-- leaving probing loop (failed=%d) [SUBLKS idx=%d]", + rc, chn->idx)); + return rc; +} + +/* + * This is the same function as blkid_do_probe(), but returns only one result + * (cannot be used in while()) and checks for ambivalent results (more + * filesystems on the device) -- in such case returns -2. + * + * The function does not check for filesystems when a RAID or crypto signature + * is detected. The function also does not check for collision between RAIDs + * and crypto devices. The first detected RAID or crypto device is returned. + * + * The function does not probe for ambivalent results on very small devices + * (e.g. floppies), on small devices the first detected filesystem is returned. + */ +static int superblocks_safeprobe(blkid_probe pr, struct blkid_chain *chn) +{ + struct list_head vals; + int idx = -1; + int count = 0; + int intol = 0; + int rc; + + INIT_LIST_HEAD(&vals); + + if (pr->flags & BLKID_FL_NOSCAN_DEV) + return BLKID_PROBE_NONE; + + while ((rc = superblocks_probe(pr, chn)) == 0) { + + if (blkid_probe_is_tiny(pr) && !count) + return BLKID_PROBE_OK; /* floppy or so -- returns the first result. */ + + count++; + + if (chn->idx >= 0 && + idinfos[chn->idx]->usage & (BLKID_USAGE_RAID | BLKID_USAGE_CRYPTO)) + break; + + if (chn->idx >= 0 && + !(idinfos[chn->idx]->flags & BLKID_IDINFO_TOLERANT)) + intol++; + + if (count == 1) { + /* save the first result */ + blkid_probe_chain_save_values(pr, chn, &vals); + idx = chn->idx; + } + } + + if (rc < 0) + goto done; /* error */ + + if (count > 1 && intol) { + DBG(LOWPROBE, ul_debug("ERROR: superblocks chain: " + "ambivalent result detected (%d filesystems)!", + count)); + rc = -2; /* error, ambivalent result (more FS) */ + goto done; + } + if (!count) { + rc = BLKID_PROBE_NONE; + goto done; + } + + if (idx != -1) { + /* restore the first result */ + blkid_probe_chain_reset_values(pr, chn); + blkid_probe_append_values_list(pr, &vals); + chn->idx = idx; + } + + /* + * The RAID device could be partitioned. The problem are RAID1 devices + * where the partition table is visible from underlying devices. We + * have to ignore such partition tables. + */ + if (chn->idx >= 0 && idinfos[chn->idx]->usage & BLKID_USAGE_RAID) + pr->prob_flags |= BLKID_PROBE_FL_IGNORE_PT; + + rc = BLKID_PROBE_OK; +done: + blkid_probe_free_values_list(&vals); + return rc; +} + +int blkid_probe_set_version(blkid_probe pr, const char *version) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + + if (chn->flags & BLKID_SUBLKS_VERSION) + return blkid_probe_set_value(pr, "VERSION", + (const unsigned char *) version, + strlen(version) + 1); + return 0; +} + + +int blkid_probe_sprintf_version(blkid_probe pr, const char *fmt, ...) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + int rc = 0; + + if (chn->flags & BLKID_SUBLKS_VERSION) { + va_list ap; + + va_start(ap, fmt); + rc = blkid_probe_vsprintf_value(pr, "VERSION", fmt, ap); + va_end(ap); + } + return rc; +} + +int blkid_probe_set_block_size(blkid_probe pr, unsigned block_size) +{ + return blkid_probe_sprintf_value(pr, "BLOCK_SIZE", "%u", block_size); +} + +static int blkid_probe_set_usage(blkid_probe pr, int usage) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + char *u = NULL; + + if (!(chn->flags & BLKID_SUBLKS_USAGE)) + return 0; + + if (usage & BLKID_USAGE_FILESYSTEM) + u = "filesystem"; + else if (usage & BLKID_USAGE_RAID) + u = "raid"; + else if (usage & BLKID_USAGE_CRYPTO) + u = "crypto"; + else if (usage & BLKID_USAGE_OTHER) + u = "other"; + else + u = "unknown"; + + return blkid_probe_set_value(pr, "USAGE", (unsigned char *) u, strlen(u) + 1); +} + +int blkid_probe_set_id_label(blkid_probe pr, const char *name, + const unsigned char *data, size_t len) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + struct blkid_prval *v; + int rc = 0; + + if (!(chn->flags & BLKID_SUBLKS_LABEL)) + return 0; + + v = blkid_probe_assign_value(pr, name); + if (!v) + return -ENOMEM; + + rc = blkid_probe_value_set_data(v, data, len); + if (!rc) { + /* remove white spaces */ + v->len = blkid_rtrim_whitespace(v->data) + 1; + if (v->len > 1) + v->len = blkid_ltrim_whitespace(v->data) + 1; + if (v->len > 1) + return 0; + } + + blkid_probe_free_value(v); + return rc; + +} + +int blkid_probe_set_utf8_id_label(blkid_probe pr, const char *name, + const unsigned char *data, size_t len, int enc) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + struct blkid_prval *v; + int rc = 0; + + if (!(chn->flags & BLKID_SUBLKS_LABEL)) + return 0; + + v = blkid_probe_assign_value(pr, name); + if (!v) + return -ENOMEM; + + v->len = (len * 3) + 1; + v->data = calloc(1, v->len); + if (!v->data) + rc = -ENOMEM; + + if (!rc) { + ul_encode_to_utf8(enc, v->data, v->len, data, len); + v->len = blkid_rtrim_whitespace(v->data) + 1; + if (v->len > 1) + v->len = blkid_ltrim_whitespace(v->data) + 1; + if (v->len > 1) + return 0; + } + + blkid_probe_free_value(v); + return rc; +} + +int blkid_probe_set_label(blkid_probe pr, const unsigned char *label, size_t len) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + struct blkid_prval *v; + int rc = 0; + + if ((chn->flags & BLKID_SUBLKS_LABELRAW) && + (rc = blkid_probe_set_value(pr, "LABEL_RAW", label, len)) < 0) + return rc; + + if (!(chn->flags & BLKID_SUBLKS_LABEL)) + return 0; + + v = blkid_probe_assign_value(pr, "LABEL"); + if (!v) + return -ENOMEM; + + rc = blkid_probe_value_set_data(v, label, len); + if (!rc) { + v->len = blkid_rtrim_whitespace(v->data) + 1; + if (v->len > 1) + return 0; + } + + blkid_probe_free_value(v); + return rc; +} + +int blkid_probe_set_utf8label(blkid_probe pr, const unsigned char *label, + size_t len, int enc) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + struct blkid_prval *v; + int rc = 0; + + if ((chn->flags & BLKID_SUBLKS_LABELRAW) && + (rc = blkid_probe_set_value(pr, "LABEL_RAW", label, len)) < 0) + return rc; + + if (!(chn->flags & BLKID_SUBLKS_LABEL)) + return 0; + + v = blkid_probe_assign_value(pr, "LABEL"); + if (!v) + return -ENOMEM; + + v->len = (len * 3) + 1; + v->data = calloc(1, v->len); + if (!v->data) + rc = -ENOMEM; + if (!rc) { + ul_encode_to_utf8(enc, v->data, v->len, label, len); + v->len = blkid_rtrim_whitespace(v->data) + 1; + if (v->len > 1) + return 0; + } + + blkid_probe_free_value(v); + return rc; +} + +int blkid_probe_sprintf_uuid(blkid_probe pr, const unsigned char *uuid, + size_t len, const char *fmt, ...) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + va_list ap; + int rc = 0; + + if (blkid_uuid_is_empty(uuid, len)) + return 0; + + if ((chn->flags & BLKID_SUBLKS_UUIDRAW) && + (rc = blkid_probe_set_value(pr, "UUID_RAW", uuid, len)) < 0) + return rc; + + if (!(chn->flags & BLKID_SUBLKS_UUID)) + return 0; + + va_start(ap, fmt); + rc = blkid_probe_vsprintf_value(pr, "UUID", fmt, ap); + va_end(ap); + + return rc; +} + +/* function to set UUIDs that are in superblocks stored as strings */ +int blkid_probe_strncpy_uuid(blkid_probe pr, const unsigned char *str, size_t len) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + struct blkid_prval *v; + int rc = 0; + + if (str == NULL || *str == '\0') + return -EINVAL; + + if (!len) + len = strlen((const char *) str); + + if ((chn->flags & BLKID_SUBLKS_UUIDRAW) && + (rc = blkid_probe_set_value(pr, "UUID_RAW", str, len)) < 0) + return rc; + + if (!(chn->flags & BLKID_SUBLKS_UUID)) + return 0; + + v = blkid_probe_assign_value(pr, "UUID"); + if (!v) + rc= -ENOMEM; + if (!rc) + rc = blkid_probe_value_set_data(v, str, len); + if (!rc) { + v->len = blkid_rtrim_whitespace(v->data) + 1; + if (v->len > 1) + return 0; + } + + blkid_probe_free_value(v); + return rc; +} + +/* default _set_uuid function to set DCE UUIDs */ +int blkid_probe_set_uuid_as(blkid_probe pr, const unsigned char *uuid, const char *name) +{ + struct blkid_chain *chn = blkid_probe_get_chain(pr); + struct blkid_prval *v; + int rc = 0; + + if (blkid_uuid_is_empty(uuid, 16)) + return 0; + + if (!name) { + if ((chn->flags & BLKID_SUBLKS_UUIDRAW) && + (rc = blkid_probe_set_value(pr, "UUID_RAW", uuid, 16)) < 0) + return rc; + + if (!(chn->flags & BLKID_SUBLKS_UUID)) + return 0; + + v = blkid_probe_assign_value(pr, "UUID"); + } else + v = blkid_probe_assign_value(pr, name); + + if (!v) + return -ENOMEM; + + v->len = UUID_STR_LEN; + v->data = calloc(1, v->len); + if (!v->data) + rc = -ENOMEM; + + if (!rc) { + blkid_unparse_uuid(uuid, (char *) v->data, v->len); + return 0; + } + + blkid_probe_free_value(v); + return rc; +} + +int blkid_probe_set_uuid(blkid_probe pr, const unsigned char *uuid) +{ + return blkid_probe_set_uuid_as(pr, uuid, NULL); +} + +/** + * blkid_probe_set_request: + * @pr: probe + * @flags: BLKID_PROBREQ_* (deprecated) or BLKID_SUBLKS_* flags + * + * Returns: 0 on success, or -1 in case of error. + * + * Deprecated: Use blkid_probe_set_superblocks_flags(). + */ +int blkid_probe_set_request(blkid_probe pr, int flags) +{ + return blkid_probe_set_superblocks_flags(pr, flags); +} + +/** + * blkid_probe_reset_filter: + * @pr: prober + * + * Returns: 0 on success, or -1 in case of error. + * + * Deprecated: Use blkid_probe_reset_superblocks_filter(). + */ +int blkid_probe_reset_filter(blkid_probe pr) +{ + return __blkid_probe_reset_filter(pr, BLKID_CHAIN_SUBLKS); +} + +/** + * blkid_probe_invert_filter: + * @pr: prober + * + * Returns: 0 on success, or -1 in case of error. + * + * Deprecated: Use blkid_probe_invert_superblocks_filter(). + */ +int blkid_probe_invert_filter(blkid_probe pr) +{ + return __blkid_probe_invert_filter(pr, BLKID_CHAIN_SUBLKS); +} + +/** + * blkid_probe_filter_types + * @pr: prober + * @flag: filter BLKID_FLTR_{NOTIN,ONLYIN} flag + * @names: NULL terminated array of probing function names (e.g. "vfat"). + * + * Returns: 0 on success, or -1 in case of error. + * + * Deprecated: Use blkid_probe_filter_superblocks_type(). + */ +int blkid_probe_filter_types(blkid_probe pr, int flag, char *names[]) +{ + return __blkid_probe_filter_types(pr, BLKID_CHAIN_SUBLKS, flag, names); +} + +/** + * blkid_probe_filter_usage + * @pr: prober + * @flag: filter BLKID_FLTR_{NOTIN,ONLYIN} flag + * @usage: BLKID_USAGE_* flags + * + * Returns: 0 on success, or -1 in case of error. + * + * Deprecated: Use blkid_probe_filter_superblocks_usage(). + */ +int blkid_probe_filter_usage(blkid_probe pr, int flag, int usage) +{ + return blkid_probe_filter_superblocks_usage(pr, flag, usage); +} + + diff --git a/libblkid/src/superblocks/superblocks.h b/libblkid/src/superblocks/superblocks.h new file mode 100644 index 0000000..9c489c4 --- /dev/null +++ b/libblkid/src/superblocks/superblocks.h @@ -0,0 +1,118 @@ +/* + * Copyright (C) 2008-2009 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#ifndef _BLKID_SUPERBLOCKS_H +#define _BLKID_SUPERBLOCKS_H + +#include "blkidP.h" + +extern const struct blkid_idinfo cramfs_idinfo; +extern const struct blkid_idinfo swap_idinfo; +extern const struct blkid_idinfo swsuspend_idinfo; +extern const struct blkid_idinfo adraid_idinfo; +extern const struct blkid_idinfo ddfraid_idinfo; +extern const struct blkid_idinfo iswraid_idinfo; +extern const struct blkid_idinfo jmraid_idinfo; +extern const struct blkid_idinfo lsiraid_idinfo; +extern const struct blkid_idinfo nvraid_idinfo; +extern const struct blkid_idinfo pdcraid_idinfo; +extern const struct blkid_idinfo silraid_idinfo; +extern const struct blkid_idinfo viaraid_idinfo; +extern const struct blkid_idinfo linuxraid_idinfo; +extern const struct blkid_idinfo ext4dev_idinfo; +extern const struct blkid_idinfo ext4_idinfo; +extern const struct blkid_idinfo ext3_idinfo; +extern const struct blkid_idinfo ext2_idinfo; +extern const struct blkid_idinfo jbd_idinfo; +extern const struct blkid_idinfo jfs_idinfo; +extern const struct blkid_idinfo xfs_idinfo; +extern const struct blkid_idinfo xfs_log_idinfo; +extern const struct blkid_idinfo exfs_idinfo; +extern const struct blkid_idinfo gfs_idinfo; +extern const struct blkid_idinfo gfs2_idinfo; +extern const struct blkid_idinfo romfs_idinfo; +extern const struct blkid_idinfo ocfs_idinfo; +extern const struct blkid_idinfo ocfs2_idinfo; +extern const struct blkid_idinfo oracleasm_idinfo; +extern const struct blkid_idinfo reiser_idinfo; +extern const struct blkid_idinfo reiser4_idinfo; +extern const struct blkid_idinfo hfs_idinfo; +extern const struct blkid_idinfo hfsplus_idinfo; +extern const struct blkid_idinfo ntfs_idinfo; +extern const struct blkid_idinfo refs_idinfo; +extern const struct blkid_idinfo iso9660_idinfo; +extern const struct blkid_idinfo udf_idinfo; +extern const struct blkid_idinfo vxfs_idinfo; +extern const struct blkid_idinfo minix_idinfo; +extern const struct blkid_idinfo vfat_idinfo; +extern const struct blkid_idinfo ufs_idinfo; +extern const struct blkid_idinfo hpfs_idinfo; +extern const struct blkid_idinfo lvm2_idinfo; +extern const struct blkid_idinfo lvm1_idinfo; +extern const struct blkid_idinfo snapcow_idinfo; +extern const struct blkid_idinfo verity_hash_idinfo; +extern const struct blkid_idinfo integrity_idinfo; +extern const struct blkid_idinfo luks_idinfo; +extern const struct blkid_idinfo highpoint37x_idinfo; +extern const struct blkid_idinfo highpoint45x_idinfo; +extern const struct blkid_idinfo squashfs_idinfo; +extern const struct blkid_idinfo squashfs3_idinfo; +extern const struct blkid_idinfo netware_idinfo; +extern const struct blkid_idinfo sysv_idinfo; +extern const struct blkid_idinfo xenix_idinfo; +extern const struct blkid_idinfo btrfs_idinfo; +extern const struct blkid_idinfo ubi_idinfo; +extern const struct blkid_idinfo ubifs_idinfo; +extern const struct blkid_idinfo zfs_idinfo; +extern const struct blkid_idinfo bfs_idinfo; +extern const struct blkid_idinfo vmfs_volume_idinfo; +extern const struct blkid_idinfo vmfs_fs_idinfo; +extern const struct blkid_idinfo bluestore_idinfo; +extern const struct blkid_idinfo drbd_idinfo; +extern const struct blkid_idinfo drbdmanage_idinfo; +extern const struct blkid_idinfo drbdproxy_datalog_idinfo; +extern const struct blkid_idinfo befs_idinfo; +extern const struct blkid_idinfo nilfs2_idinfo; +extern const struct blkid_idinfo exfat_idinfo; +extern const struct blkid_idinfo f2fs_idinfo; +extern const struct blkid_idinfo bcache_idinfo; +extern const struct blkid_idinfo mpool_idinfo; +extern const struct blkid_idinfo vdo_idinfo; +extern const struct blkid_idinfo stratis_idinfo; +extern const struct blkid_idinfo bitlocker_idinfo; +extern const struct blkid_idinfo apfs_idinfo; +extern const struct blkid_idinfo zonefs_idinfo; +extern const struct blkid_idinfo erofs_idinfo; + +/* + * superblock functions + */ +extern int blkid_probe_set_version(blkid_probe pr, const char *version); +extern int blkid_probe_sprintf_version(blkid_probe pr, const char *fmt, ...) + __attribute__ ((__format__ (__printf__, 2, 3))); + +extern int blkid_probe_set_label(blkid_probe pr, const unsigned char *label, size_t len); +extern int blkid_probe_set_utf8label(blkid_probe pr, const unsigned char *label, + size_t len, int enc); +extern int blkid_probe_sprintf_uuid(blkid_probe pr, const unsigned char *uuid, + size_t len, const char *fmt, ...) + __attribute__ ((__format__ (__printf__, 4, 5))); +extern int blkid_probe_strncpy_uuid(blkid_probe pr, const unsigned char *str, size_t len); + +extern int blkid_probe_set_uuid(blkid_probe pr, const unsigned char *uuid); +extern int blkid_probe_set_uuid_as(blkid_probe pr, const unsigned char *uuid, const char *name); + +extern int blkid_probe_set_id_label(blkid_probe pr, const char *name, + const unsigned char *data, size_t len); +extern int blkid_probe_set_utf8_id_label(blkid_probe pr, const char *name, + const unsigned char *data, size_t len, int enc); + +int blkid_probe_set_block_size(blkid_probe pr, unsigned block_size); + +extern int blkid_probe_is_bitlocker(blkid_probe pr); +extern int blkid_probe_is_ntfs(blkid_probe pr); + +#endif /* _BLKID_SUPERBLOCKS_H */ diff --git a/libblkid/src/superblocks/swap.c b/libblkid/src/superblocks/swap.c new file mode 100644 index 0000000..fcdb13b --- /dev/null +++ b/libblkid/src/superblocks/swap.c @@ -0,0 +1,178 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +/* linux-2.6/include/linux/swap.h */ +struct swap_header_v1_2 { + /* char bootbits[1024]; */ /* Space for disklabel etc. */ + uint32_t version; + uint32_t lastpage; + uint32_t nr_badpages; + unsigned char uuid[16]; + unsigned char volume[16]; + uint32_t padding[117]; + uint32_t badpages[1]; +} __attribute__((packed)); + +#define PAGESIZE_MIN 0xff6 /* 4086 (arm, i386, ...) */ +#define PAGESIZE_MAX 0xfff6 /* 65526 (ia64) */ + +#define TOI_MAGIC_STRING "\xed\xc3\x02\xe9\x98\x56\xe5\x0c" +#define TOI_MAGIC_STRLEN (sizeof(TOI_MAGIC_STRING) - 1) + +static int swap_set_info(blkid_probe pr, const char *version) +{ + struct swap_header_v1_2 *hdr; + + /* Swap header always located at offset of 1024 bytes */ + hdr = (struct swap_header_v1_2 *) blkid_probe_get_buffer(pr, 1024, + sizeof(struct swap_header_v1_2)); + if (!hdr) + return errno ? -errno : 1; + + /* SWAPSPACE2 - check for wrong version or zeroed pagecount */ + if (strcmp(version, "1") == 0) { + if (hdr->version != 1 && swab32(hdr->version) != 1) { + DBG(LOWPROBE, ul_debug("incorrect swap version")); + return 1; + } + if (hdr->lastpage == 0) { + DBG(LOWPROBE, ul_debug("not set last swap page")); + return 1; + } + } + + /* arbitrary sanity check.. is there any garbage down there? */ + if (hdr->padding[32] == 0 && hdr->padding[33] == 0) { + if (hdr->volume[0] && blkid_probe_set_label(pr, hdr->volume, + sizeof(hdr->volume)) < 0) + return 1; + if (blkid_probe_set_uuid(pr, hdr->uuid) < 0) + return 1; + } + + blkid_probe_set_version(pr, version); + return 0; +} + +static int probe_swap(blkid_probe pr, const struct blkid_idmag *mag) +{ + unsigned char *buf; + + if (!mag) + return 1; + + /* TuxOnIce keeps valid swap header at the end of the 1st page */ + buf = blkid_probe_get_buffer(pr, 0, TOI_MAGIC_STRLEN); + if (!buf) + return errno ? -errno : 1; + + if (memcmp(buf, TOI_MAGIC_STRING, TOI_MAGIC_STRLEN) == 0) + return 1; /* Ignore swap signature, it's TuxOnIce */ + + if (!memcmp(mag->magic, "SWAP-SPACE", mag->len)) { + /* swap v0 doesn't support LABEL or UUID */ + blkid_probe_set_version(pr, "0"); + return 0; + + } + + if (!memcmp(mag->magic, "SWAPSPACE2", mag->len)) + return swap_set_info(pr, "1"); + + return 1; +} + +static int probe_swsuspend(blkid_probe pr, const struct blkid_idmag *mag) +{ + if (!mag) + return 1; + if (!memcmp(mag->magic, "S1SUSPEND", mag->len)) + return swap_set_info(pr, "s1suspend"); + if (!memcmp(mag->magic, "S2SUSPEND", mag->len)) + return swap_set_info(pr, "s2suspend"); + if (!memcmp(mag->magic, "ULSUSPEND", mag->len)) + return swap_set_info(pr, "ulsuspend"); + if (!memcmp(mag->magic, TOI_MAGIC_STRING, TOI_MAGIC_STRLEN)) + return swap_set_info(pr, "tuxonice"); + if (!memcmp(mag->magic, "LINHIB0001", mag->len)) + return swap_set_info(pr, "linhib0001"); + + return 1; /* no signature detected */ +} + +const struct blkid_idinfo swap_idinfo = +{ + .name = "swap", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_swap, + .minsz = 10 * 4096, /* 10 pages */ + .magics = + { + { .magic = "SWAP-SPACE", .len = 10, .sboff = 0xff6 }, + { .magic = "SWAPSPACE2", .len = 10, .sboff = 0xff6 }, + { .magic = "SWAP-SPACE", .len = 10, .sboff = 0x1ff6 }, + { .magic = "SWAPSPACE2", .len = 10, .sboff = 0x1ff6 }, + { .magic = "SWAP-SPACE", .len = 10, .sboff = 0x3ff6 }, + { .magic = "SWAPSPACE2", .len = 10, .sboff = 0x3ff6 }, + { .magic = "SWAP-SPACE", .len = 10, .sboff = 0x7ff6 }, + { .magic = "SWAPSPACE2", .len = 10, .sboff = 0x7ff6 }, + { .magic = "SWAP-SPACE", .len = 10, .sboff = 0xfff6 }, + { .magic = "SWAPSPACE2", .len = 10, .sboff = 0xfff6 }, + { NULL } + } +}; + + +const struct blkid_idinfo swsuspend_idinfo = +{ + .name = "swsuspend", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_swsuspend, + .minsz = 10 * 4096, /* 10 pages */ + .magics = + { + { .magic = TOI_MAGIC_STRING, .len = TOI_MAGIC_STRLEN }, + { .magic = "S1SUSPEND", .len = 9, .sboff = 0xff6 }, + { .magic = "S2SUSPEND", .len = 9, .sboff = 0xff6 }, + { .magic = "ULSUSPEND", .len = 9, .sboff = 0xff6 }, + { .magic = "LINHIB0001", .len = 10, .sboff = 0xff6 }, + + { .magic = "S1SUSPEND", .len = 9, .sboff = 0x1ff6 }, + { .magic = "S2SUSPEND", .len = 9, .sboff = 0x1ff6 }, + { .magic = "ULSUSPEND", .len = 9, .sboff = 0x1ff6 }, + { .magic = "LINHIB0001", .len = 10, .sboff = 0x1ff6 }, + + { .magic = "S1SUSPEND", .len = 9, .sboff = 0x3ff6 }, + { .magic = "S2SUSPEND", .len = 9, .sboff = 0x3ff6 }, + { .magic = "ULSUSPEND", .len = 9, .sboff = 0x3ff6 }, + { .magic = "LINHIB0001", .len = 10, .sboff = 0x3ff6 }, + + { .magic = "S1SUSPEND", .len = 9, .sboff = 0x7ff6 }, + { .magic = "S2SUSPEND", .len = 9, .sboff = 0x7ff6 }, + { .magic = "ULSUSPEND", .len = 9, .sboff = 0x7ff6 }, + { .magic = "LINHIB0001", .len = 10, .sboff = 0x7ff6 }, + + { .magic = "S1SUSPEND", .len = 9, .sboff = 0xfff6 }, + { .magic = "S2SUSPEND", .len = 9, .sboff = 0xfff6 }, + { .magic = "ULSUSPEND", .len = 9, .sboff = 0xfff6 }, + { .magic = "LINHIB0001", .len = 10, .sboff = 0xfff6 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/sysv.c b/libblkid/src/superblocks/sysv.c new file mode 100644 index 0000000..421660e --- /dev/null +++ b/libblkid/src/superblocks/sysv.c @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This is written from scratch according to Linux kernel fs/sysv/super.c file. + * It seems that sysv probing code in libvolume_id and also in the original + * blkid is useless. + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdint.h> +#include <stddef.h> + +#include "superblocks.h" + +#define XENIX_NICINOD 100 +#define XENIX_NICFREE 100 + +struct xenix_super_block { + uint16_t s_isize; + uint32_t s_fsize; + uint16_t s_nfree; + uint32_t s_free[XENIX_NICFREE]; + uint16_t s_ninode; + uint16_t s_inode[XENIX_NICINOD]; + uint8_t s_flock; + uint8_t s_ilock; + uint8_t s_fmod; + uint8_t s_ronly; + uint32_t s_time; + uint32_t s_tfree; + uint16_t s_tinode; + uint16_t s_dinfo[4]; + uint8_t s_fname[6]; + uint8_t s_fpack[6]; + uint8_t s_clean; + uint8_t s_fill[371]; + uint32_t s_magic; + uint32_t s_type; +} __attribute__((packed)); + + +#define SYSV_NICINOD 100 +#define SYSV_NICFREE 50 + +struct sysv_super_block +{ + uint16_t s_isize; + uint16_t s_pad0; + uint32_t s_fsize; + uint16_t s_nfree; + uint16_t s_pad1; + uint32_t s_free[SYSV_NICFREE]; + uint16_t s_ninode; + uint16_t s_pad2; + uint16_t s_inode[SYSV_NICINOD]; + uint8_t s_flock; + uint8_t s_ilock; + uint8_t s_fmod; + uint8_t s_ronly; + uint32_t s_time; + uint16_t s_dinfo[4]; + uint32_t s_tfree; + uint16_t s_tinode; + uint16_t s_pad3; + uint8_t s_fname[6]; + uint8_t s_fpack[6]; + uint32_t s_fill[12]; + uint32_t s_state; + uint32_t s_magic; + uint32_t s_type; +}; + +static int probe_xenix(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct xenix_super_block *sb; + + sb = blkid_probe_get_sb(pr, mag, struct xenix_super_block); + if (!sb) + return errno ? -errno : 1; + blkid_probe_set_label(pr, sb->s_fname, sizeof(sb->s_fname)); + return 0; +} + +#define SYSV_BLOCK_SIZE 1024 + +/* Note that we don't probe for Coherent FS, this FS does not have + * magic string. (It requires to probe fname/fpack field..) + */ +static int probe_sysv(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct sysv_super_block *sb; + int blocks[] = {0, 9, 15, 18}; + size_t i; + + for (i = 0; i < ARRAY_SIZE(blocks); i++) { + int off = blocks[i] * SYSV_BLOCK_SIZE + SYSV_BLOCK_SIZE/2; + + sb = (struct sysv_super_block *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct sysv_super_block)); + if (!sb) + return errno ? -errno : 1; + + if (sb->s_magic == cpu_to_le32(0xfd187e20) || + sb->s_magic == cpu_to_be32(0xfd187e20)) { + + if (blkid_probe_set_label(pr, sb->s_fname, + sizeof(sb->s_fname))) + return 1; + + if (blkid_probe_set_magic(pr, + off + offsetof(struct sysv_super_block, + s_magic), + sizeof(sb->s_magic), + (unsigned char *) &sb->s_magic)) + return 1; + + return 0; + } + } + return 1; +} + +const struct blkid_idinfo xenix_idinfo = +{ + .name = "xenix", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_xenix, + .magics = + { + { .magic = "\x2b\x55\x44", .len = 3, .kboff = 1, .sboff = 0x400 }, + { .magic = "\x44\x55\x2b", .len = 3, .kboff = 1, .sboff = 0x400 }, + { NULL } + } +}; + +const struct blkid_idinfo sysv_idinfo = +{ + .name = "sysv", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_sysv, + + /* SYSV is BE and LE and superblock could be on four positions. It's + * simpler to probe for the magic string by .probefunc(). + */ + .magics = BLKID_NONE_MAGIC +}; + diff --git a/libblkid/src/superblocks/ubi.c b/libblkid/src/superblocks/ubi.c new file mode 100644 index 0000000..0739c32 --- /dev/null +++ b/libblkid/src/superblocks/ubi.c @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2017 Rafał Miłecki <rafal@milecki.pl> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +struct ubi_ec_hdr { + uint32_t magic; + uint8_t version; + uint8_t padding1[3]; + uint64_t ec; + uint32_t vid_hdr_offset; + uint32_t data_offset; + uint32_t image_seq; + uint8_t padding2[32]; + uint32_t hdr_crc; +} __attribute__((packed)); + +static int probe_ubi(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct ubi_ec_hdr *hdr; + + hdr = blkid_probe_get_sb(pr, mag, struct ubi_ec_hdr); + if (!hdr) + return -1; + + blkid_probe_sprintf_version(pr, "%u", hdr->version); + blkid_probe_sprintf_uuid(pr, (unsigned char *)&hdr->image_seq, 4, "%u", + be32_to_cpu(hdr->image_seq)); + return 0; +} + +const struct blkid_idinfo ubi_idinfo = +{ + .name = "ubi", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_ubi, + .magics = + { + { .magic = "UBI#", .len = 4 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/ubifs.c b/libblkid/src/superblocks/ubifs.c new file mode 100644 index 0000000..dc84260 --- /dev/null +++ b/libblkid/src/superblocks/ubifs.c @@ -0,0 +1,121 @@ +/* + * Copyright (C) 2009 Corentin Chary <corentincj@iksaif.net> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> + +#include "superblocks.h" + +/* + * struct ubifs_ch - common header node. + * @magic: UBIFS node magic number (%UBIFS_NODE_MAGIC) + * @crc: CRC-32 checksum of the node header + * @sqnum: sequence number + * @len: full node length + * @node_type: node type + * @group_type: node group type + * @padding: reserved for future, zeroes + * + * Every UBIFS node starts with this common part. If the node has a key, the + * key always goes next. + */ +struct ubifs_ch { + uint32_t magic; + uint32_t crc; + uint64_t sqnum; + uint32_t len; + uint8_t node_type; + uint8_t group_type; + uint8_t padding[2]; +} __attribute__ ((packed)); + +/* + * struct ubifs_sb_node - superblock node. + * @ch: common header + * @padding: reserved for future, zeroes + * @key_hash: type of hash function used in keys + * @key_fmt: format of the key + * @flags: file-system flags (%UBIFS_FLG_BIGLPT, etc) + * @min_io_size: minimal input/output unit size + * @leb_size: logical eraseblock size in bytes + * @leb_cnt: count of LEBs used by file-system + * @max_leb_cnt: maximum count of LEBs used by file-system + * @max_bud_bytes: maximum amount of data stored in buds + * @log_lebs: log size in logical eraseblocks + * @lpt_lebs: number of LEBs used for lprops table + * @orph_lebs: number of LEBs used for recording orphans + * @jhead_cnt: count of journal heads + * @fanout: tree fanout (max. number of links per indexing node) + * @lsave_cnt: number of LEB numbers in LPT's save table + * @fmt_version: UBIFS on-flash format version + * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc) + * @padding1: reserved for future, zeroes + * @rp_uid: reserve pool UID + * @rp_gid: reserve pool GID + * @rp_size: size of the reserved pool in bytes + * @padding2: reserved for future, zeroes + * @time_gran: time granularity in nanoseconds + * @uuid: UUID generated when the file system image was created + * @ro_compat_version: UBIFS R/O compatibility version + */ +struct ubifs_sb_node { + struct ubifs_ch ch; + uint8_t padding[2]; + uint8_t key_hash; + uint8_t key_fmt; + uint32_t flags; + uint32_t min_io_size; + uint32_t leb_size; + uint32_t leb_cnt; + uint32_t max_leb_cnt; + uint64_t max_bud_bytes; + uint32_t log_lebs; + uint32_t lpt_lebs; + uint32_t orph_lebs; + uint32_t jhead_cnt; + uint32_t fanout; + uint32_t lsave_cnt; + uint32_t fmt_version; + uint16_t default_compr; + uint8_t padding1[2]; + uint32_t rp_uid; + uint32_t rp_gid; + uint64_t rp_size; + uint32_t time_gran; + uint8_t uuid[16]; + uint32_t ro_compat_version; + uint8_t padding2[3968]; +} __attribute__ ((packed)); + +static int probe_ubifs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct ubifs_sb_node *sb; + + sb = blkid_probe_get_sb(pr, mag, struct ubifs_sb_node); + if (!sb) + return errno ? -errno : 1; + + blkid_probe_set_uuid(pr, sb->uuid); + blkid_probe_sprintf_version(pr, "w%dr%d", + le32_to_cpu(sb->fmt_version), + le32_to_cpu(sb->ro_compat_version)); + return 0; +} + +const struct blkid_idinfo ubifs_idinfo = +{ + .name = "ubifs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ubifs, + .magics = + { + { .magic = "\x31\x18\x10\x06", .len = 4 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/udf.c b/libblkid/src/superblocks/udf.c new file mode 100644 index 0000000..9ed089e --- /dev/null +++ b/libblkid/src/superblocks/udf.c @@ -0,0 +1,595 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2014-2017 Pali Rohár <pali.rohar@gmail.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +#define is_charset_udf(charspec) ((charspec).type == 0 && strncmp((charspec).info, "OSTA Compressed Unicode", sizeof((charspec).info)) == 0) + +#define udf_cid_to_enc(cid) ((cid) == 8 ? UL_ENCODE_LATIN1 : (cid) == 16 ? UL_ENCODE_UTF16BE : -1) + +struct charspec { + uint8_t type; + char info[63]; +} __attribute__((packed)); + +struct dstring128 { + uint8_t cid; + uint8_t c[126]; + uint8_t clen; +} __attribute__((packed)); + +struct dstring32 { + uint8_t cid; + uint8_t c[30]; + uint8_t clen; +} __attribute__((packed)); + +struct dstring36 { + uint8_t cid; + uint8_t c[34]; + uint8_t clen; +} __attribute__((packed)); + +struct volume_descriptor { + struct descriptor_tag { + uint16_t id; + uint16_t version; + uint8_t checksum; + uint8_t reserved; + uint16_t serial; + uint16_t crc; + uint16_t crc_len; + uint32_t location; + } __attribute__((packed)) tag; + + union { + struct anchor_descriptor { + uint32_t length; + uint32_t location; + } __attribute__((packed)) anchor; + + struct primary_descriptor { + uint32_t seq_num; + uint32_t desc_num; + struct dstring32 ident; + uint16_t vds_num; + uint16_t max_vol_seq; + uint16_t ichg_lvl; + uint16_t max_ichg_lvl; + uint32_t charset_list; + uint32_t max_charset_list; + struct dstring128 volset_id; + struct charspec desc_charset; + struct charspec exp_charset; + uint32_t vol_abstract[2]; + uint32_t vol_copyright[2]; + uint8_t app_id_flags; + char app_id[23]; + uint8_t app_id_reserved[8]; + uint8_t recording_date[12]; + uint8_t imp_id_flags; + char imp_id[23]; + uint8_t imp_id_os_class; + uint8_t imp_id_os_id; + uint8_t imp_id_reserved[6]; + } __attribute__((packed)) primary; + + struct logical_descriptor { + uint32_t seq_num; + struct charspec desc_charset; + struct dstring128 logvol_id; + uint32_t logical_blocksize; + uint8_t domain_id_flags; + char domain_id[23]; + uint16_t udf_rev; + uint8_t domain_suffix_flags; + uint8_t reserved[5]; + uint8_t logical_contents_use[16]; + uint32_t map_table_length; + uint32_t num_partition_maps; + uint8_t imp_id[32]; + uint8_t imp_use[128]; + uint32_t lvid_length; + uint32_t lvid_location; + } __attribute__((packed)) logical; + + struct logical_vol_integ_descriptor { + uint8_t recording_date[12]; + uint32_t type; + uint32_t next_lvid_length; + uint32_t next_lvid_location; + uint8_t logical_contents_use[32]; + uint32_t num_partitions; + uint32_t imp_use_length; + } __attribute__((packed)) logical_vol_integ; + + struct imp_use_volume_descriptor { + uint32_t seq_num; + uint8_t lvi_id_flags; + char lvi_id[23]; + uint16_t lvi_id_udf_rev; + uint8_t lvi_id_os_class; + uint8_t lvi_id_os_id; + uint8_t lvi_id_reserved[4]; + struct charspec lvi_charset; + struct dstring128 logvol_id; + struct dstring36 lvinfo1; + struct dstring36 lvinfo2; + struct dstring36 lvinfo3; + } __attribute__((packed)) imp_use_volume; + } __attribute__((packed)) type; + +} __attribute__((packed)); + +#define TAG_ID_PVD 1 +#define TAG_ID_AVDP 2 +#define TAG_ID_IUVD 4 +#define TAG_ID_LVD 6 +#define TAG_ID_TD 8 +#define TAG_ID_LVID 9 + +struct volume_structure_descriptor { + uint8_t type; + uint8_t id[5]; + uint8_t version; +} __attribute__((packed)); + +#define UDF_VSD_OFFSET 0x8000LL + +struct logical_vol_integ_descriptor_imp_use +{ + uint8_t imp_id[32]; + uint32_t num_files; + uint32_t num_dirs; + uint16_t min_udf_read_rev; + uint16_t min_udf_write_rev; + uint16_t max_udf_write_rev; +} __attribute__ ((packed)); + +#define UDF_LVIDIU_OFFSET(vd) (sizeof((vd).tag) + sizeof((vd).type.logical_vol_integ) + 2 * 4 * le32_to_cpu((vd).type.logical_vol_integ.num_partitions)) +#define UDF_LVIDIU_LENGTH(vd) (le32_to_cpu((vd).type.logical_vol_integ.imp_use_length)) + +static inline int gen_uuid_from_volset_id(unsigned char uuid[17], struct dstring128 *volset_id) +{ + int enc; + size_t i; + size_t len; + size_t clen; + size_t nonhexpos; + unsigned char buf[17]; + + memset(buf, 0, sizeof(buf)); + + clen = volset_id->clen; + if (clen > 0) + --clen; + if (clen > sizeof(volset_id->c)) + clen = sizeof(volset_id->c); + + enc = udf_cid_to_enc(volset_id->cid); + if (enc == -1) + return -1; + + len = ul_encode_to_utf8(enc, buf, sizeof(buf), volset_id->c, clen); + if (len < 8) + return -1; + + nonhexpos = 16; + for (i = 0; i < 16; ++i) { + if (!isxdigit(buf[i])) { + nonhexpos = i; + break; + } + } + + if (nonhexpos < 8) { + snprintf((char *) uuid, 17, "%02x%02x%02x%02x%02x%02x%02x%02x", + buf[0], buf[1], buf[2], buf[3], + buf[4], buf[5], buf[6], buf[7]); + } else if (nonhexpos < 16) { + for (i = 0; i < 8; ++i) + uuid[i] = tolower(buf[i]); + snprintf((char *) uuid + 8, 9, "%02x%02x%02x%02x", + buf[8], buf[9], buf[10], buf[11]); + } else { + for (i = 0; i < 16; ++i) + uuid[i] = tolower(buf[i]); + uuid[16] = 0; + } + + return 0; +} + +static int probe_udf(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct volume_descriptor *vd; + struct volume_structure_descriptor *vsd; + struct logical_vol_integ_descriptor_imp_use *lvidiu; + uint32_t lvid_len = 0; + uint32_t lvid_loc = 0; + uint64_t s_off; + uint32_t bs; + uint32_t b; + uint16_t type; + uint32_t count; + uint32_t loc; + size_t i; + uint32_t vsd_len; + uint16_t udf_rev = 0; + int vsd_2048_valid = -1; + int have_label = 0; + int have_uuid = 0; + int have_logvolid = 0; + int have_volid = 0; + int have_volsetid = 0; + int have_applicationid = 0; + int have_publisherid = 0; + + /* Session offset */ + if (blkid_probe_get_hint(pr, "session_offset", &s_off) < 0) + s_off = 0; + + /* The block size of a UDF filesystem is that of the underlying + * storage; we check later on for the special case of image files, + * which may have any block size valid for UDF filesystem */ + uint32_t pbs[] = { 0, 512, 1024, 2048, 4096 }; + pbs[0] = blkid_probe_get_sectorsize(pr); + + for (i = 0; i < ARRAY_SIZE(pbs); i++) { + /* Do not try with block size same as sector size two times */ + if (i != 0 && pbs[0] == pbs[i]) + continue; + + /* Do not try with block size which is not divisor of session offset */ + if (s_off % pbs[i]) + continue; + + /* ECMA-167 2/8.4, 2/9.1: Each VSD is either 2048 bytes long or + * its size is same as blocksize (for blocksize > 2048 bytes) + * plus padded with zeros */ + vsd_len = pbs[i] > 2048 ? pbs[i] : 2048; + + /* Process 2048 bytes long VSD on first session only once + * as its location is same for any blocksize */ + if (s_off == 0 && vsd_len == 2048) { + if (vsd_2048_valid == 0) + continue; + if (vsd_2048_valid == 1) + goto anchor; + } + + /* Check for a Volume Structure Descriptor (VSD) */ + for (b = 0; b < 64; b++) { + vsd = (struct volume_structure_descriptor *) + blkid_probe_get_buffer(pr, + s_off + UDF_VSD_OFFSET + b * vsd_len, + sizeof(*vsd)); + if (!vsd) + return errno ? -errno : 1; + if (vsd->id[0] == '\0') + break; + if (memcmp(vsd->id, "NSR02", 5) == 0 || + memcmp(vsd->id, "NSR03", 5) == 0) + goto anchor; + else if (memcmp(vsd->id, "BEA01", 5) != 0 && + memcmp(vsd->id, "BOOT2", 5) != 0 && + memcmp(vsd->id, "CD001", 5) != 0 && + memcmp(vsd->id, "CDW02", 5) != 0 && + memcmp(vsd->id, "TEA01", 5) != 0) + /* ECMA-167 2/8.3.1: The volume recognition sequence is + * terminated by the first sector which is not a valid + * descriptor. + * UDF-2.60 2.1.7: UDF 2.00 and lower revisions do not + * have requirement that NSR descriptor is in Extended Area + * (between BEA01 and TEA01) and that there is only one + * Extended Area. So do not stop scanning after TEA01. */ + break; + } + + if (s_off == 0 && vsd_len == 2048) + vsd_2048_valid = 0; + + /* NSR was not found, try with next block size */ + continue; + +anchor: + if (s_off == 0 && vsd_len == 2048) + vsd_2048_valid = 1; + + /* Read Anchor Volume Descriptor (AVDP), detect block size */ + vd = (struct volume_descriptor *) + blkid_probe_get_buffer(pr, s_off + 256 * pbs[i], sizeof(*vd)); + if (!vd) + return errno ? -errno : 1; + + /* Check that we read correct sector and detected correct block size */ + if (le32_to_cpu(vd->tag.location) == s_off / pbs[i] + 256) { + type = le16_to_cpu(vd->tag.id); + if (type == TAG_ID_AVDP) + goto real_blksz; + } + + /* UDF-2.60: 2.2.3: Unclosed sequential Write-Once media may + * have a single AVDP present at either sector 256 or 512. */ + vd = (struct volume_descriptor *) + blkid_probe_get_buffer(pr, s_off + 512 * pbs[i], sizeof(*vd)); + if (!vd) + return errno ? -errno : 1; + + if (le32_to_cpu(vd->tag.location) == s_off / pbs[i] + 512) { + type = le16_to_cpu(vd->tag.id); + if (type == TAG_ID_AVDP) + goto real_blksz; + } + + } + return 1; + +real_blksz: + /* Use the actual block size from here on out */ + bs = pbs[i]; + + /* get descriptor list address and block count */ + count = le32_to_cpu(vd->type.anchor.length) / bs; + loc = le32_to_cpu(vd->type.anchor.location); + + /* pick the primary descriptor from the list and read UDF identifiers */ + for (b = 0; b < count; b++) { + vd = (struct volume_descriptor *) + blkid_probe_get_buffer(pr, + (uint64_t) (loc + b) * bs, + sizeof(*vd)); + if (!vd) + return errno ? -errno : 1; + type = le16_to_cpu(vd->tag.id); + if (type == 0) + break; + if (le32_to_cpu(vd->tag.location) != loc + b) + break; + if (type == TAG_ID_TD) + break; + if (type == TAG_ID_PVD) { + if (!have_volid && is_charset_udf(vd->type.primary.desc_charset)) { + int enc = udf_cid_to_enc(vd->type.primary.ident.cid); + uint8_t clen = vd->type.primary.ident.clen; + if (clen > 0) + --clen; + if (clen > sizeof(vd->type.primary.ident.c)) + clen = sizeof(vd->type.primary.ident.c); + if (enc != -1) + have_volid = !blkid_probe_set_utf8_id_label(pr, "VOLUME_ID", + vd->type.primary.ident.c, clen, enc); + } + if (!have_uuid && is_charset_udf(vd->type.primary.desc_charset)) { + /* VolumeSetIdentifier in UDF 2.01 specification: + * ================================================================================= + * 2.2.2.5 dstring VolumeSetIdentifier + * + * Interpreted as specifying the identifier for the volume set. + * + * The first 16 characters of this field should be set to a unique value. The + * remainder of the field may be set to any allowed value. Specifically, software + * generating volumes conforming to this specification shall not set this field to a + * fixed or trivial value. Duplicate disks which are intended to be identical may + * contain the same value in this field. + * + * NOTE: The intended purpose of this is to guarantee Volume Sets with unique + * identifiers. The first 8 characters of the unique part should come from a CS0 + * hexadecimal representation of a 32-bit time value. The remaining 8 characters + * are free for implementation use. + * ================================================================================= + * + * Implementation in libblkid: + * The first 16 (Unicode) characters of VolumeSetIdentifier are encoded to UTF-8 + * and then first 16 UTF-8 bytes are used to generate UUID. If all 16 bytes are + * hexadecimal digits then their lowercase variants are used as UUID. If one of + * the first 8 bytes (time value) is not hexadecimal digit then first 8 bytes are + * encoded to their hexadecimal representations, resulting in 16 characters and + * set as UUID. If all first 8 bytes (time value) are hexadecimal digits but some + * remaining not then lowercase variant of the first 8 bytes are used as first + * part of UUID and next 4 bytes encoded in hexadecimal representations (resulting + * in 8 characters) are used as second part of UUID string. + */ + unsigned char uuid[17]; + if (gen_uuid_from_volset_id(uuid, &vd->type.primary.volset_id) == 0) + have_uuid = !blkid_probe_strncpy_uuid(pr, uuid, sizeof(uuid)); + } + if (!have_volsetid && is_charset_udf(vd->type.primary.desc_charset)) { + int enc = udf_cid_to_enc(vd->type.primary.volset_id.cid); + uint8_t clen = vd->type.primary.volset_id.clen; + if (clen > 0) + --clen; + if (clen > sizeof(vd->type.primary.volset_id.c)) + clen = sizeof(vd->type.primary.volset_id.c); + if (enc != -1) + have_volsetid = !blkid_probe_set_utf8_id_label(pr, "VOLUME_SET_ID", + vd->type.primary.volset_id.c, clen, enc); + } + if (!have_applicationid) { + /* UDF-2.60: 2.2.2.9: This field specifies a valid Entity Identifier identifying the application that last wrote this field */ + const unsigned char *app_id = (const unsigned char *)vd->type.primary.app_id; + size_t app_id_len = strnlen(vd->type.primary.app_id, sizeof(vd->type.primary.app_id)); + if (app_id_len > 0 && app_id[0] == '*') { + app_id++; + app_id_len--; + } + /* When Application Identifier is not set then use Developer ID from Implementation Identifier */ + if (app_id_len == 0) { + /* UDF-2.60: 2.1.5.2: "*Developer ID" refers to an Entity Identifier that uniquely identifies the current implementation */ + app_id = (const unsigned char *)vd->type.primary.imp_id; + app_id_len = strnlen(vd->type.primary.imp_id, sizeof(vd->type.primary.imp_id)); + if (app_id_len > 0 && app_id[0] == '*') { + app_id++; + app_id_len--; + } + } + if (app_id_len > 0) { + /* UDF-2.60: 2.1.5.2: Values used by UDF for this field are specified in terms of ASCII character strings */ + have_applicationid = !blkid_probe_set_id_label(pr, "APPLICATION_ID", app_id, app_id_len); + } + } + } else if (type == TAG_ID_LVD) { + if (!lvid_len || !lvid_loc) { + uint32_t num_partition_maps = le32_to_cpu(vd->type.logical.num_partition_maps); + /* ECMA-167 3/10.6.12: If num_partition_maps is 0, then no LVID is specified */ + if (num_partition_maps) { + lvid_len = le32_to_cpu(vd->type.logical.lvid_length); + lvid_loc = le32_to_cpu(vd->type.logical.lvid_location); + } + } + if (!udf_rev) { + /* UDF-2.60: 2.1.5.3: UDF revision field shall indicate revision of UDF document + * We use maximal value from this field and from LVIDIU fields for ID_FS_VERSION */ + if (strncmp(vd->type.logical.domain_id, "*OSTA UDF Compliant", sizeof(vd->type.logical.domain_id)) == 0) + udf_rev = le16_to_cpu(vd->type.logical.udf_rev); + } + if ((!have_logvolid || !have_label) && is_charset_udf(vd->type.logical.desc_charset)) { + /* LogicalVolumeIdentifier in UDF 2.01 specification: + * =============================================================== + * 2. Basic Restrictions & Requirements + * + * Logical Volume Descriptor + * + * There shall be exactly one prevailing Logical Volume + * Descriptor recorded per Volume Set. + * + * The LogicalVolumeIdentifier field shall not be null and + * should contain an identifier that aids in the identification of + * the logical volume. Specifically, software generating + * volumes conforming to this specification shall not set this + * field to a fixed or trivial value. Duplicate disks, which are + * intended to be identical, may contain the same value in this + * field. This field is extremely important in logical volume + * identification when multiple media are present within a + * jukebox. This name is typically what is displayed to the user. + * =============================================================== + * + * Implementation in libblkid: + * The LogicalVolumeIdentifier field is used for LABEL. MS Windows + * read Volume Label also from LogicalVolumeIdentifier. Grub2 read + * LABEL also from this field. Program newfs_udf (from UDFclient) + * when formatting disk set this field from user option Disc Name. + */ + int enc = udf_cid_to_enc(vd->type.logical.logvol_id.cid); + uint8_t clen = vd->type.logical.logvol_id.clen; + if (clen > 0) + --clen; + if (clen > sizeof(vd->type.logical.logvol_id.c)) + clen = sizeof(vd->type.logical.logvol_id.c); + if (enc != -1) { + if (!have_label) + have_label = !blkid_probe_set_utf8label(pr, + vd->type.logical.logvol_id.c, clen, enc); + if (!have_logvolid) + have_logvolid = !blkid_probe_set_utf8_id_label(pr, "LOGICAL_VOLUME_ID", + vd->type.logical.logvol_id.c, clen, enc); + } + } + } else if (type == TAG_ID_IUVD) { + if (!have_publisherid && strncmp(vd->type.imp_use_volume.lvi_id, "*UDF LV Info", sizeof(vd->type.imp_use_volume.lvi_id)) == 0 && is_charset_udf(vd->type.imp_use_volume.lvi_charset)) { + /* UDF-2.60: 2.2.7.2.3: Field LVInfo1 could contain information such as Owner Name + * More UDF generating tools set this field to person who creating the filesystem + * therefore its meaning is similar to ISO9660 Publisher Identifier. So for + * compatibility with iso9660 superblock code export this field via PUBLISHER_ID. + */ + int enc = udf_cid_to_enc(vd->type.imp_use_volume.lvinfo1.cid); + uint8_t clen = vd->type.imp_use_volume.lvinfo1.clen; + if (clen > 0) + --clen; + if (clen > sizeof(vd->type.imp_use_volume.lvinfo1.c)) + clen = sizeof(vd->type.imp_use_volume.lvinfo1.c); + if (enc != -1) + have_publisherid = !blkid_probe_set_utf8_id_label(pr, "PUBLISHER_ID", + vd->type.imp_use_volume.lvinfo1.c, clen, enc); + } + } + if (have_volid && have_uuid && have_volsetid && have_logvolid && have_label && lvid_len && lvid_loc && have_applicationid && have_publisherid) + break; + } + + /* Pick the first logical volume integrity descriptor and read UDF revision */ + if (lvid_loc && lvid_len >= sizeof(*vd)) { + vd = (struct volume_descriptor *) + blkid_probe_get_buffer(pr, + (uint64_t) lvid_loc * bs, + sizeof(*vd)); + if (!vd) + return errno ? -errno : 1; + type = le16_to_cpu(vd->tag.id); + if (type == TAG_ID_LVID && + le32_to_cpu(vd->tag.location) == lvid_loc && + UDF_LVIDIU_LENGTH(*vd) >= sizeof(*lvidiu)) { + /* ECMA-167 3/8.8.2: There is stored sequence of LVIDs and valid is just last + * one. So correctly we should jump to next_lvid_location and read next LVID + * until we find last one. This could be time consuming process and could + * lead to scanning lot of disk blocks. Because we use LVID only for UDF + * version, in the worst case we would report only wrong ID_FS_VERSION. */ + uint16_t lvidiu_udf_rev; + lvidiu = (struct logical_vol_integ_descriptor_imp_use *) + blkid_probe_get_buffer(pr, + (uint64_t) lvid_loc * bs + UDF_LVIDIU_OFFSET(*vd), + sizeof(*lvidiu)); + if (!lvidiu) + return errno ? -errno : 1; + /* UDF-2.60: 2. Basic Restrictions & Requirements: + * The Minimum UDF Read Revision value shall be at most #0250 + * for all media with a UDF 2.60 file system. + * Because some 2.60 implementations put 2.50 into both LVIDIU + * fields and 2.60 into LVD, use maximal value from LVD, + * Minimum UDF Read Revision and Minimum UDF Write Revision for + * ID_FS_VERSION to distinguish between UDF 2.50 and UDF 2.60 discs. */ + lvidiu_udf_rev = le16_to_cpu(lvidiu->min_udf_read_rev); + if (lvidiu_udf_rev && udf_rev < lvidiu_udf_rev) + udf_rev = lvidiu_udf_rev; + lvidiu_udf_rev = le16_to_cpu(lvidiu->min_udf_write_rev); + if (lvidiu_udf_rev && udf_rev < lvidiu_udf_rev) + udf_rev = lvidiu_udf_rev; + } + } + + if (udf_rev) + /* UDF revision is stored as decimal number in hexadecimal format. + * E.g. number 0x0150 is revision 1.50, number 0x0201 is revision 2.01. */ + blkid_probe_sprintf_version(pr, "%x.%02x", (unsigned int)(udf_rev >> 8), (unsigned int)(udf_rev & 0xFF)); + + blkid_probe_set_block_size(pr, bs); + + return 0; +} + + +const struct blkid_idinfo udf_idinfo = +{ + .name = "udf", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_udf, + .flags = BLKID_IDINFO_TOLERANT, + .magics = + { + { .magic = "BEA01", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "BOOT2", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "CD001", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "CDW02", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "NSR02", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "NSR03", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { .magic = "TEA01", .len = 5, .kboff = 32, .sboff = 1, .hoff = "session_offset" }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/ufs.c b/libblkid/src/superblocks/ufs.c new file mode 100644 index 0000000..7a8396c --- /dev/null +++ b/libblkid/src/superblocks/ufs.c @@ -0,0 +1,263 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> +#include <stddef.h> + +#include "superblocks.h" + +struct ufs_super_block { + uint32_t fs_link; + uint32_t fs_rlink; + uint32_t fs_sblkno; + uint32_t fs_cblkno; + uint32_t fs_iblkno; + uint32_t fs_dblkno; + uint32_t fs_cgoffset; + uint32_t fs_cgmask; + uint32_t fs_time; + uint32_t fs_size; + uint32_t fs_dsize; + uint32_t fs_ncg; + uint32_t fs_bsize; + uint32_t fs_fsize; + uint32_t fs_frag; + uint32_t fs_minfree; + uint32_t fs_rotdelay; + uint32_t fs_rps; + uint32_t fs_bmask; + uint32_t fs_fmask; + uint32_t fs_bshift; + uint32_t fs_fshift; + uint32_t fs_maxcontig; + uint32_t fs_maxbpg; + uint32_t fs_fragshift; + uint32_t fs_fsbtodb; + uint32_t fs_sbsize; + uint32_t fs_csmask; + uint32_t fs_csshift; + uint32_t fs_nindir; + uint32_t fs_inopb; + uint32_t fs_nspf; + uint32_t fs_optim; + uint32_t fs_npsect_state; + uint32_t fs_interleave; + uint32_t fs_trackskew; + uint32_t fs_id[2]; + uint32_t fs_csaddr; + uint32_t fs_cssize; + uint32_t fs_cgsize; + uint32_t fs_ntrak; + uint32_t fs_nsect; + uint32_t fs_spc; + uint32_t fs_ncyl; + uint32_t fs_cpg; + uint32_t fs_ipg; + uint32_t fs_fpg; + struct ufs_csum { + uint32_t cs_ndir; + uint32_t cs_nbfree; + uint32_t cs_nifree; + uint32_t cs_nffree; + } fs_cstotal; + int8_t fs_fmod; + int8_t fs_clean; + int8_t fs_ronly; + int8_t fs_flags; + union { + struct { + int8_t fs_fsmnt[512]; + uint32_t fs_cgrotor; + uint32_t fs_csp[31]; + uint32_t fs_maxcluster; + uint32_t fs_cpc; + uint16_t fs_opostbl[16][8]; + } fs_u1; + struct { + int8_t fs_fsmnt[468]; + uint8_t fs_volname[32]; + uint64_t fs_swuid; + int32_t fs_pad; + uint32_t fs_cgrotor; + uint32_t fs_ocsp[28]; + uint32_t fs_contigdirs; + uint32_t fs_csp; + uint32_t fs_maxcluster; + uint32_t fs_active; + int32_t fs_old_cpc; + int32_t fs_maxbsize; + int64_t fs_sparecon64[17]; + int64_t fs_sblockloc; + struct ufs2_csum_total { + uint64_t cs_ndir; + uint64_t cs_nbfree; + uint64_t cs_nifree; + uint64_t cs_nffree; + uint64_t cs_numclusters; + uint64_t cs_spare[3]; + } fs_cstotal; + struct ufs_timeval { + int32_t tv_sec; + int32_t tv_usec; + } fs_time; + int64_t fs_size; + int64_t fs_dsize; + uint64_t fs_csaddr; + int64_t fs_pendingblocks; + int32_t fs_pendinginodes; + } __attribute__((packed)) fs_u2; + } fs_u11; + union { + struct { + int32_t fs_sparecon[53]; + int32_t fs_reclaim; + int32_t fs_sparecon2[1]; + int32_t fs_state; + uint32_t fs_qbmask[2]; + uint32_t fs_qfmask[2]; + } fs_sun; + struct { + int32_t fs_sparecon[53]; + int32_t fs_reclaim; + int32_t fs_sparecon2[1]; + uint32_t fs_npsect; + uint32_t fs_qbmask[2]; + uint32_t fs_qfmask[2]; + } fs_sunx86; + struct { + int32_t fs_sparecon[50]; + int32_t fs_contigsumsize; + int32_t fs_maxsymlinklen; + int32_t fs_inodefmt; + uint32_t fs_maxfilesize[2]; + uint32_t fs_qbmask[2]; + uint32_t fs_qfmask[2]; + int32_t fs_state; + } fs_44; + } fs_u2; + int32_t fs_postblformat; + int32_t fs_nrpos; + int32_t fs_postbloff; + int32_t fs_rotbloff; + uint32_t fs_magic; + uint8_t fs_space[1]; +} __attribute__((packed)); + +#define UFS_MAGIC 0x00011954 +#define UFS2_MAGIC 0x19540119 +#define UFS_MAGIC_FEA 0x00195612 +#define UFS_MAGIC_LFN 0x00095014 +#define UFS_MAGIC_SEC 0x00612195 +#define UFS_MAGIC_4GB 0x05231994 + +static int probe_ufs(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + int offsets[] = { 0, 8, 64, 256 }; + uint32_t mags[] = { + UFS2_MAGIC, UFS_MAGIC, UFS_MAGIC_FEA, UFS_MAGIC_LFN, + UFS_MAGIC_SEC, UFS_MAGIC_4GB + }; + size_t i; + uint32_t magic; + struct ufs_super_block *ufs; + int is_be; + + for (i = 0; i < ARRAY_SIZE(offsets); i++) { + uint32_t magLE, magBE; + size_t y; + + ufs = (struct ufs_super_block *) + blkid_probe_get_buffer(pr, + offsets[i] * 1024, + sizeof(struct ufs_super_block)); + if (!ufs) + return errno ? -errno : 1; + + magBE = be32_to_cpu(ufs->fs_magic); + magLE = le32_to_cpu(ufs->fs_magic); + + for (y = 0; y < ARRAY_SIZE(mags); y++) { + if (magLE == mags[y] || magBE == mags[y]) { + magic = mags[y]; + is_be = (magBE == mags[y]); + goto found; + } + } + } + + return 1; + +found: + if (magic == UFS2_MAGIC) { + blkid_probe_set_version(pr, "2"); + blkid_probe_set_label(pr, ufs->fs_u11.fs_u2.fs_volname, + sizeof(ufs->fs_u11.fs_u2.fs_volname)); + } else + blkid_probe_set_version(pr, "1"); + if (ufs->fs_id[0] || ufs->fs_id[1]) + { + if (is_be) + blkid_probe_sprintf_uuid(pr, + (unsigned char *) &ufs->fs_id, + sizeof(ufs->fs_id), + "%08x%08x", + be32_to_cpu(ufs->fs_id[0]), + be32_to_cpu(ufs->fs_id[1])); + else + blkid_probe_sprintf_uuid(pr, + (unsigned char *) &ufs->fs_id, + sizeof(ufs->fs_id), + "%08x%08x", + le32_to_cpu(ufs->fs_id[0]), + le32_to_cpu(ufs->fs_id[1])); + } + + if (blkid_probe_set_magic(pr, + (offsets[i] * 1024) + + offsetof(struct ufs_super_block, fs_magic), + sizeof(ufs->fs_magic), + (unsigned char *) &ufs->fs_magic)) + return 1; + + if (!is_be) + blkid_probe_set_block_size(pr, le32_to_cpu(ufs->fs_fsize)); + else + blkid_probe_set_block_size(pr, be32_to_cpu(ufs->fs_fsize)); + + return 0; +} + +/* + * According to libvolume_id the UFS superblock could be on four positions. + * The original libblkid has checked one position (.kboff=8) only. + * + * We know four UFS magic strings and UFS could be both little-endian and + * big-endian. ... so we have: + * + * 4 position * 4 string * 2 version = 32 magic strings + * + * It seems simpler to check for these string in probing function that hardcode + * all in the .magic array. + */ +const struct blkid_idinfo ufs_idinfo = +{ + .name = "ufs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_ufs, + .magics = BLKID_NONE_MAGIC +}; + diff --git a/libblkid/src/superblocks/vdo.c b/libblkid/src/superblocks/vdo.c new file mode 100644 index 0000000..bec686f --- /dev/null +++ b/libblkid/src/superblocks/vdo.c @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2017 Red Hat, Inc. + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct vdo_super_block { + char magic[8]; /* magic number 'dmvdo001'*/ + char unused[32]; /* 32 bytes of unimportant space */ + unsigned char sb_uuid[16]; /* vdo unique id */ + + /* this is not all... but enough for libblkid */ +} __attribute__((packed)); + +static int probe_vdo(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct vdo_super_block *vsb; + + vsb = blkid_probe_get_sb(pr, mag, struct vdo_super_block); + if (!vsb) + return errno ? -errno : 1; + + blkid_probe_set_uuid(pr, vsb->sb_uuid); + return 0; +} + +const struct blkid_idinfo vdo_idinfo = +{ + .name = "vdo", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_vdo, + .magics = + { + { .magic = "dmvdo001", .len = 8 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/vfat.c b/libblkid/src/superblocks/vfat.c new file mode 100644 index 0000000..7181348 --- /dev/null +++ b/libblkid/src/superblocks/vfat.c @@ -0,0 +1,461 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> +#include <inttypes.h> + +#include "pt-mbr.h" +#include "superblocks.h" + +/* Yucky misaligned values */ +struct vfat_super_block { +/* 00*/ unsigned char vs_ignored[3]; +/* 03*/ unsigned char vs_sysid[8]; +/* 0b*/ unsigned char vs_sector_size[2]; +/* 0d*/ uint8_t vs_cluster_size; +/* 0e*/ uint16_t vs_reserved; +/* 10*/ uint8_t vs_fats; +/* 11*/ unsigned char vs_dir_entries[2]; +/* 13*/ unsigned char vs_sectors[2]; +/* 15*/ unsigned char vs_media; +/* 16*/ uint16_t vs_fat_length; +/* 18*/ uint16_t vs_secs_track; +/* 1a*/ uint16_t vs_heads; +/* 1c*/ uint32_t vs_hidden; +/* 20*/ uint32_t vs_total_sect; +/* 24*/ uint32_t vs_fat32_length; +/* 28*/ uint16_t vs_flags; +/* 2a*/ uint8_t vs_version[2]; +/* 2c*/ uint32_t vs_root_cluster; +/* 30*/ uint16_t vs_fsinfo_sector; +/* 32*/ uint16_t vs_backup_boot; +/* 34*/ uint16_t vs_reserved2[6]; +/* 40*/ unsigned char vs_drive_number; +/* 41*/ unsigned char vs_boot_flags; +/* 42*/ unsigned char vs_ext_boot_sign; /* 0x28 - without vs_label/vs_magic; 0x29 - with */ +/* 43*/ unsigned char vs_serno[4]; +/* 47*/ unsigned char vs_label[11]; +/* 52*/ unsigned char vs_magic[8]; +/* 5a*/ unsigned char vs_dummy2[0x1fe - 0x5a]; +/*1fe*/ unsigned char vs_pmagic[2]; +} __attribute__((packed)); + +/* Yucky misaligned values */ +struct msdos_super_block { +/* DOS 2.0 BPB */ +/* 00*/ unsigned char ms_ignored[3]; +/* 03*/ unsigned char ms_sysid[8]; +/* 0b*/ unsigned char ms_sector_size[2]; +/* 0d*/ uint8_t ms_cluster_size; +/* 0e*/ uint16_t ms_reserved; +/* 10*/ uint8_t ms_fats; +/* 11*/ unsigned char ms_dir_entries[2]; +/* 13*/ unsigned char ms_sectors[2]; /* =0 iff V3 or later */ +/* 15*/ unsigned char ms_media; +/* 16*/ uint16_t ms_fat_length; /* Sectors per FAT */ +/* DOS 3.0 BPB */ +/* 18*/ uint16_t ms_secs_track; +/* 1a*/ uint16_t ms_heads; +/* 1c*/ uint32_t ms_hidden; +/* DOS 3.31 BPB */ +/* 20*/ uint32_t ms_total_sect; /* iff ms_sectors == 0 */ +/* DOS 3.4 EBPB */ +/* 24*/ unsigned char ms_drive_number; +/* 25*/ unsigned char ms_boot_flags; +/* 26*/ unsigned char ms_ext_boot_sign; /* 0x28 - DOS 3.4 EBPB; 0x29 - DOS 4.0 EBPB */ +/* 27*/ unsigned char ms_serno[4]; +/* DOS 4.0 EBPB */ +/* 2b*/ unsigned char ms_label[11]; +/* 36*/ unsigned char ms_magic[8]; +/* padding */ +/* 3e*/ unsigned char ms_dummy2[0x1fe - 0x3e]; +/*1fe*/ unsigned char ms_pmagic[2]; +} __attribute__((packed)); + +struct vfat_dir_entry { + uint8_t name[11]; + uint8_t attr; + uint16_t time_creat; + uint16_t date_creat; + uint16_t time_acc; + uint16_t date_acc; + uint16_t cluster_high; + uint16_t time_write; + uint16_t date_write; + uint16_t cluster_low; + uint32_t size; +} __attribute__((packed)); + +struct fat32_fsinfo { + uint8_t signature1[4]; + uint32_t reserved1[120]; + uint8_t signature2[4]; + uint32_t free_clusters; + uint32_t next_cluster; + uint32_t reserved2[4]; +} __attribute__((packed)); + +/* maximum number of clusters */ +#define FAT12_MAX 0xFF4 +#define FAT16_MAX 0xFFF4 +#define FAT32_MAX 0x0FFFFFF6 + +#define FAT_ATTR_VOLUME_ID 0x08 +#define FAT_ATTR_DIR 0x10 +#define FAT_ATTR_LONG_NAME 0x0f +#define FAT_ATTR_MASK 0x3f +#define FAT_ENTRY_FREE 0xe5 + +static const char *no_name = "NO NAME "; + +#define unaligned_le16(x) \ + (((unsigned char *) x)[0] + (((unsigned char *) x)[1] << 8)) + +/* + * Look for LABEL (name) in the FAT root directory. + */ +static unsigned char *search_fat_label(blkid_probe pr, + uint64_t offset, uint32_t entries) +{ + struct vfat_dir_entry *ent, *dir = NULL; + uint32_t i; + + DBG(LOWPROBE, ul_debug("\tlook for label in root-dir " + "(entries: %"PRIu32", offset: %"PRIu64")", entries, offset)); + + if (!blkid_probe_is_tiny(pr)) { + /* large disk, read whole root directory */ + dir = (struct vfat_dir_entry *) + blkid_probe_get_buffer(pr, + offset, + (uint64_t) entries * + sizeof(struct vfat_dir_entry)); + if (!dir) + return NULL; + } + + for (i = 0; i < entries; i++) { + /* + * The root directory could be relatively large (4-16kB). + * Fortunately, the LABEL is usually the first entry in the + * directory. On tiny disks we call read() per entry. + */ + if (!dir) + ent = (struct vfat_dir_entry *) + blkid_probe_get_buffer(pr, + (uint64_t) offset + (i * + sizeof(struct vfat_dir_entry)), + sizeof(struct vfat_dir_entry)); + else + ent = &dir[i]; + + if (!ent || ent->name[0] == 0x00) + break; + + if ((ent->name[0] == FAT_ENTRY_FREE) || + (ent->cluster_high != 0 || ent->cluster_low != 0) || + ((ent->attr & FAT_ATTR_MASK) == FAT_ATTR_LONG_NAME)) + continue; + + if ((ent->attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) == + FAT_ATTR_VOLUME_ID) { + DBG(LOWPROBE, ul_debug("\tfound fs LABEL at entry %d", i)); + if (ent->name[0] == 0x05) + ent->name[0] = 0xE5; + return ent->name; + } + } + return NULL; +} + +static int fat_valid_superblock(blkid_probe pr, + const struct blkid_idmag *mag, + struct msdos_super_block *ms, + struct vfat_super_block *vs, + uint32_t *cluster_count, uint32_t *fat_size) +{ + uint16_t sector_size, dir_entries, reserved; + uint32_t sect_count, __fat_size, dir_size, __cluster_count, fat_length; + uint32_t max_count; + + /* extra check for FATs without magic strings */ + if (mag->len <= 2) { + /* Old floppies have a valid MBR signature */ + if (ms->ms_pmagic[0] != 0x55 || ms->ms_pmagic[1] != 0xAA) + return 0; + + /* + * OS/2 and apparently DFSee will place a FAT12/16-like + * pseudo-superblock in the first 512 bytes of non-FAT + * filesystems --- at least JFS and HPFS, and possibly others. + * So we explicitly check for those filesystems at the + * FAT12/16 filesystem magic field identifier, and if they are + * present, we rule this out as a FAT filesystem, despite the + * FAT-like pseudo-header. + */ + if ((memcmp(ms->ms_magic, "JFS ", 8) == 0) || + (memcmp(ms->ms_magic, "HPFS ", 8) == 0)) { + DBG(LOWPROBE, ul_debug("\tJFS/HPFS detected")); + return 0; + } + } + + /* fat counts(Linux kernel expects at least 1 FAT table) */ + if (!ms->ms_fats) + return 0; + if (!ms->ms_reserved) + return 0; + if (!(0xf8 <= ms->ms_media || ms->ms_media == 0xf0)) + return 0; + if (!is_power_of_2(ms->ms_cluster_size)) + return 0; + + sector_size = unaligned_le16(&ms->ms_sector_size); + if (!is_power_of_2(sector_size) || + sector_size < 512 || sector_size > 4096) + return 0; + + dir_entries = unaligned_le16(&ms->ms_dir_entries); + reserved = le16_to_cpu(ms->ms_reserved); + sect_count = unaligned_le16(&ms->ms_sectors); + + if (sect_count == 0) + sect_count = le32_to_cpu(ms->ms_total_sect); + + fat_length = le16_to_cpu(ms->ms_fat_length); + if (fat_length == 0) + fat_length = le32_to_cpu(vs->vs_fat32_length); + + __fat_size = fat_length * ms->ms_fats; + dir_size = ((dir_entries * sizeof(struct vfat_dir_entry)) + + (sector_size-1)) / sector_size; + + __cluster_count = (sect_count - (reserved + __fat_size + dir_size)) / + ms->ms_cluster_size; + if (!ms->ms_fat_length && vs->vs_fat32_length) + max_count = FAT32_MAX; + else + max_count = __cluster_count > FAT12_MAX ? FAT16_MAX : FAT12_MAX; + + if (__cluster_count > max_count) + return 0; + + if (fat_size) + *fat_size = __fat_size; + if (cluster_count) + *cluster_count = __cluster_count; + + if (blkid_probe_is_bitlocker(pr)) + return 0; + + return 1; /* valid */ +} + +/* function prototype to avoid warnings (duplicate in partitions/dos.c) */ +extern int blkid_probe_is_vfat(blkid_probe pr); + +/* + * This function is used by MBR partition table parser to avoid + * misinterpretation of FAT filesystem. + */ +int blkid_probe_is_vfat(blkid_probe pr) +{ + struct vfat_super_block *vs; + struct msdos_super_block *ms; + const struct blkid_idmag *mag = NULL; + int rc; + + rc = blkid_probe_get_idmag(pr, &vfat_idinfo, NULL, &mag); + if (rc < 0) + return rc; /* error */ + if (rc != BLKID_PROBE_OK || !mag) + return 0; + + ms = blkid_probe_get_sb(pr, mag, struct msdos_super_block); + if (!ms) + return errno ? -errno : 0; + vs = blkid_probe_get_sb(pr, mag, struct vfat_super_block); + if (!vs) + return errno ? -errno : 0; + + return fat_valid_superblock(pr, mag, ms, vs, NULL, NULL); +} + +/* FAT label extraction from the root directory taken from Kay + * Sievers's volume_id library */ +static int probe_vfat(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct vfat_super_block *vs; + struct msdos_super_block *ms; + const unsigned char *vol_label = NULL; + const unsigned char *boot_label = NULL; + unsigned char *vol_serno = NULL, vol_label_buf[11]; + uint16_t sector_size = 0, reserved; + uint32_t cluster_count, fat_size; + const char *version = NULL; + + ms = blkid_probe_get_sb(pr, mag, struct msdos_super_block); + if (!ms) + return errno ? -errno : 1; + + vs = blkid_probe_get_sb(pr, mag, struct vfat_super_block); + if (!vs) + return errno ? -errno : 1; + + if (!fat_valid_superblock(pr, mag, ms, vs, &cluster_count, &fat_size)) + return 1; + + sector_size = unaligned_le16(&ms->ms_sector_size); + reserved = le16_to_cpu(ms->ms_reserved); + + if (ms->ms_fat_length) { + /* the label may be an attribute in the root directory */ + uint32_t root_start = (reserved + fat_size) * sector_size; + uint32_t root_dir_entries = unaligned_le16(&vs->vs_dir_entries); + + vol_label = search_fat_label(pr, root_start, root_dir_entries); + if (vol_label) { + memcpy(vol_label_buf, vol_label, 11); + vol_label = vol_label_buf; + } + + if (ms->ms_ext_boot_sign == 0x29) + boot_label = ms->ms_label; + + if (ms->ms_ext_boot_sign == 0x28 || ms->ms_ext_boot_sign == 0x29) + vol_serno = ms->ms_serno; + + blkid_probe_set_value(pr, "SEC_TYPE", (unsigned char *) "msdos", + sizeof("msdos")); + + if (cluster_count < FAT12_MAX) + version = "FAT12"; + else if (cluster_count < FAT16_MAX) + version = "FAT16"; + + } else if (vs->vs_fat32_length) { + unsigned char *buf; + uint16_t fsinfo_sect; + int maxloop = 100; + + /* Search the FAT32 root dir for the label attribute */ + uint32_t buf_size = vs->vs_cluster_size * sector_size; + uint32_t start_data_sect = reserved + fat_size; + uint32_t entries = ((uint64_t) le32_to_cpu(vs->vs_fat32_length) + * sector_size) / sizeof(uint32_t); + uint32_t next = le32_to_cpu(vs->vs_root_cluster); + + while (next && next < entries && --maxloop) { + uint32_t next_sect_off; + uint64_t next_off, fat_entry_off; + int count; + + next_sect_off = (next - 2) * vs->vs_cluster_size; + next_off = (uint64_t)(start_data_sect + next_sect_off) * + sector_size; + + count = buf_size / sizeof(struct vfat_dir_entry); + + vol_label = search_fat_label(pr, next_off, count); + if (vol_label) { + memcpy(vol_label_buf, vol_label, 11); + vol_label = vol_label_buf; + break; + } + + /* get FAT entry */ + fat_entry_off = ((uint64_t) reserved * sector_size) + + (next * sizeof(uint32_t)); + buf = blkid_probe_get_buffer(pr, fat_entry_off, buf_size); + if (buf == NULL) + break; + + /* set next cluster */ + next = le32_to_cpu(*((uint32_t *) buf)) & 0x0fffffff; + } + + version = "FAT32"; + + if (vs->vs_ext_boot_sign == 0x29) + boot_label = vs->vs_label; + + vol_serno = vs->vs_serno; + + /* + * FAT32 should have a valid signature in the fsinfo block, + * but also allow all bytes set to '\0', because some volumes + * do not set the signature at all. + */ + fsinfo_sect = le16_to_cpu(vs->vs_fsinfo_sector); + if (fsinfo_sect) { + struct fat32_fsinfo *fsinfo; + + buf = blkid_probe_get_buffer(pr, + (uint64_t) fsinfo_sect * sector_size, + sizeof(struct fat32_fsinfo)); + if (buf == NULL) + return errno ? -errno : 1; + + fsinfo = (struct fat32_fsinfo *) buf; + if (memcmp(fsinfo->signature1, "\x52\x52\x61\x41", 4) != 0 && + memcmp(fsinfo->signature1, "\x52\x52\x64\x41", 4) != 0 && + memcmp(fsinfo->signature1, "\x00\x00\x00\x00", 4) != 0) + return 1; + if (memcmp(fsinfo->signature2, "\x72\x72\x41\x61", 4) != 0 && + memcmp(fsinfo->signature2, "\x00\x00\x00\x00", 4) != 0) + return 1; + } + } + + if (boot_label && memcmp(boot_label, no_name, 11) != 0) + blkid_probe_set_id_label(pr, "LABEL_FATBOOT", boot_label, 11); + + if (vol_label) + blkid_probe_set_label(pr, vol_label, 11); + + /* We can't just print them as %04X, because they are unaligned */ + if (vol_serno) + blkid_probe_sprintf_uuid(pr, vol_serno, 4, "%02X%02X-%02X%02X", + vol_serno[3], vol_serno[2], vol_serno[1], vol_serno[0]); + if (version) + blkid_probe_set_version(pr, version); + + blkid_probe_set_block_size(pr, sector_size); + + return 0; +} + + +const struct blkid_idinfo vfat_idinfo = +{ + .name = "vfat", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_vfat, + .magics = + { + { .magic = "MSWIN", .len = 5, .sboff = 0x52 }, + { .magic = "FAT32 ", .len = 8, .sboff = 0x52 }, + { .magic = "MSDOS", .len = 5, .sboff = 0x36 }, + { .magic = "FAT16 ", .len = 8, .sboff = 0x36 }, + { .magic = "FAT12 ", .len = 8, .sboff = 0x36 }, + { .magic = "FAT ", .len = 8, .sboff = 0x36 }, + { .magic = "\353", .len = 1, }, + { .magic = "\351", .len = 1, }, + { .magic = "\125\252", .len = 2, .sboff = 0x1fe }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/via_raid.c b/libblkid/src/superblocks/via_raid.c new file mode 100644 index 0000000..ee3ab65 --- /dev/null +++ b/libblkid/src/superblocks/via_raid.c @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * Inspired by libvolume_id by + * Kay Sievers <kay.sievers@vrfy.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct via_metadata { + uint16_t signature; + uint8_t version_number; + struct via_array { + uint16_t disk_bit_mask; + uint8_t disk_array_ex; + uint32_t capacity_low; + uint32_t capacity_high; + uint32_t serial_checksum; + } __attribute__((packed)) array; + uint32_t serial_checksum[8]; + uint8_t checksum; +} __attribute__((packed)); + +#define VIA_SIGNATURE 0xAA55 + +/* 8 bit checksum on first 50 bytes of metadata. */ +static uint8_t via_checksum(struct via_metadata *v) +{ + uint8_t i = 50, cs = 0; + + while (i--) + cs += ((uint8_t*) v)[i]; + + return cs; +} + +static int probe_viaraid(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + uint64_t off; + struct via_metadata *v; + + if (pr->size < 0x10000) + return 1; + if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr)) + return 1; + + off = ((pr->size / 0x200)-1) * 0x200; + + v = (struct via_metadata *) + blkid_probe_get_buffer(pr, + off, + sizeof(struct via_metadata)); + if (!v) + return errno ? -errno : 1; + + if (le16_to_cpu(v->signature) != VIA_SIGNATURE) + return 1; + if (v->version_number > 2) + return 1; + if (!blkid_probe_verify_csum(pr, via_checksum(v), v->checksum)) + return 1; + + if (blkid_probe_sprintf_version(pr, "%u", v->version_number) != 0) + return 1; + if (blkid_probe_set_magic(pr, off, + sizeof(v->signature), + (unsigned char *) &v->signature)) + return 1; + return 0; +} + +const struct blkid_idinfo viaraid_idinfo = { + .name = "via_raid_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_viaraid, + .magics = BLKID_NONE_MAGIC +}; + + diff --git a/libblkid/src/superblocks/vmfs.c b/libblkid/src/superblocks/vmfs.c new file mode 100644 index 0000000..fac87ab --- /dev/null +++ b/libblkid/src/superblocks/vmfs.c @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2009 Mike Hommey <mh@glandium.org> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ +#include "superblocks.h" + +struct vmfs_fs_info { + uint32_t magic; + uint32_t volume_version; + uint8_t version; + uint8_t uuid[16]; + uint32_t mode; + char label[128]; +} __attribute__ ((__packed__)); + +struct vmfs_volume_info { + uint32_t magic; + uint32_t ver; + uint8_t irrelevant[122]; + uint8_t uuid[16]; +} __attribute__ ((__packed__)); + +static int probe_vmfs_fs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct vmfs_fs_info *header; + + header = blkid_probe_get_sb(pr, mag, struct vmfs_fs_info); + if (header == NULL) + return errno ? -errno : 1; + + blkid_probe_sprintf_uuid(pr, (unsigned char *) header->uuid, 16, + "%02x%02x%02x%02x-%02x%02x%02x%02x-" + "%02x%02x-%02x%02x%02x%02x%02x%02x", + header->uuid[3], header->uuid[2], header->uuid[1], + header->uuid[0], header->uuid[7], header->uuid[6], + header->uuid[5], header->uuid[4], header->uuid[9], + header->uuid[8], header->uuid[10], header->uuid[11], + header->uuid[12], header->uuid[13], header->uuid[14], + header->uuid[15]); + + blkid_probe_set_label(pr, (unsigned char *) header->label, + sizeof(header->label)); + blkid_probe_sprintf_version(pr, "%u", header->version); + return 0; +} + +static int probe_vmfs_volume(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct vmfs_volume_info *header; + unsigned char *lvm_uuid; + + header = blkid_probe_get_sb(pr, mag, struct vmfs_volume_info); + if (header == NULL) + return errno ? -errno : 1; + + blkid_probe_sprintf_value(pr, "UUID_SUB", + "%02x%02x%02x%02x-%02x%02x%02x%02x-" + "%02x%02x-%02x%02x%02x%02x%02x%02x", + header->uuid[3], header->uuid[2], header->uuid[1], + header->uuid[0], header->uuid[7], header->uuid[6], + header->uuid[5], header->uuid[4], header->uuid[9], + header->uuid[8], header->uuid[10], header->uuid[11], + header->uuid[12], header->uuid[13], header->uuid[14], + header->uuid[15]); + blkid_probe_sprintf_version(pr, "%u", le32_to_cpu(header->ver)); + + lvm_uuid = blkid_probe_get_buffer(pr, + 1024 * 1024 /* Start of the volume info */ + + 512 /* Offset to lvm info */ + + 20 /* Offset in lvm info */, 35); + if (lvm_uuid) + blkid_probe_strncpy_uuid(pr, lvm_uuid, 35); + + return 0; +} + +const struct blkid_idinfo vmfs_fs_idinfo = +{ + .name = "VMFS", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_vmfs_fs, + .magics = + { + { .magic = "\x5e\xf1\xab\x2f", .len = 4, .kboff = 2048 }, + { NULL } + } +}; + +const struct blkid_idinfo vmfs_volume_idinfo = +{ + .name = "VMFS_volume_member", + .usage = BLKID_USAGE_RAID, + .probefunc = probe_vmfs_volume, + .magics = + { + { .magic = "\x0d\xd0\x01\xc0", .len = 4, .kboff = 1024 }, + { NULL } + } +}; diff --git a/libblkid/src/superblocks/vxfs.c b/libblkid/src/superblocks/vxfs.c new file mode 100644 index 0000000..d9d26ad --- /dev/null +++ b/libblkid/src/superblocks/vxfs.c @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> + +#include "superblocks.h" + +struct vxfs_super_block { + uint32_t vs_magic; + int32_t vs_version; + uint32_t vs_ctime; + uint32_t vs_cutime; + uint32_t __unused1; + uint32_t __unused2; + uint32_t vs_old_logstart; + uint32_t vs_old_logend; + uint32_t vs_bsize; + uint32_t vs_size; + uint32_t vs_dsize; +}; + +static int probe_vxfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct vxfs_super_block *vxs; + + vxs = blkid_probe_get_sb(pr, mag, struct vxfs_super_block); + if (!vxs) + return errno ? -errno : 1; + + if (le32_to_cpu(vxs->vs_magic) == 0xa501fcf5) { + blkid_probe_sprintf_version(pr, "%u", (unsigned int)le32_to_cpu(vxs->vs_version)); + blkid_probe_set_block_size(pr, le32_to_cpu(vxs->vs_bsize)); + } else if (be32_to_cpu(vxs->vs_magic) == 0xa501fcf5) { + blkid_probe_sprintf_version(pr, "%u", (unsigned int)be32_to_cpu(vxs->vs_version)); + blkid_probe_set_block_size(pr, be32_to_cpu(vxs->vs_bsize)); + } + return 0; +} + + +const struct blkid_idinfo vxfs_idinfo = +{ + .name = "vxfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_vxfs, + .magics = + { + { .magic = "\365\374\001\245", .len = 4, .kboff = 1 }, + { .magic = "\245\001\374\365", .len = 4, .kboff = 8 }, + { NULL } + } +}; + diff --git a/libblkid/src/superblocks/xfs.c b/libblkid/src/superblocks/xfs.c new file mode 100644 index 0000000..d8c6fb6 --- /dev/null +++ b/libblkid/src/superblocks/xfs.c @@ -0,0 +1,286 @@ +/* + * Copyright (C) 1999 by Andries Brouwer + * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o + * Copyright (C) 2001 by Andreas Dilger + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2008 Karel Zak <kzak@redhat.com> + * Copyright (C) 2013 Eric Sandeen <sandeen@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <stdint.h> + +#include "superblocks.h" + +struct xfs_super_block { + uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */ + uint32_t sb_blocksize; /* logical block size, bytes */ + uint64_t sb_dblocks; /* number of data blocks */ + uint64_t sb_rblocks; /* number of realtime blocks */ + uint64_t sb_rextents; /* number of realtime extents */ + unsigned char sb_uuid[16]; /* file system unique id */ + uint64_t sb_logstart; /* starting block of log if internal */ + uint64_t sb_rootino; /* root inode number */ + uint64_t sb_rbmino; /* bitmap inode for realtime extents */ + uint64_t sb_rsumino; /* summary inode for rt bitmap */ + uint32_t sb_rextsize; /* realtime extent size, blocks */ + uint32_t sb_agblocks; /* size of an allocation group */ + uint32_t sb_agcount; /* number of allocation groups */ + uint32_t sb_rbmblocks; /* number of rt bitmap blocks */ + uint32_t sb_logblocks; /* number of log blocks */ + + uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */ + uint16_t sb_sectsize; /* volume sector size, bytes */ + uint16_t sb_inodesize; /* inode size, bytes */ + uint16_t sb_inopblock; /* inodes per block */ + char sb_fname[12]; /* file system name */ + uint8_t sb_blocklog; /* log2 of sb_blocksize */ + uint8_t sb_sectlog; /* log2 of sb_sectsize */ + uint8_t sb_inodelog; /* log2 of sb_inodesize */ + uint8_t sb_inopblog; /* log2 of sb_inopblock */ + uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */ + uint8_t sb_rextslog; /* log2 of sb_rextents */ + uint8_t sb_inprogress; /* mkfs is in progress, don't mount */ + uint8_t sb_imax_pct; /* max % of fs for inode space */ + /* statistics */ + uint64_t sb_icount; /* allocated inodes */ + uint64_t sb_ifree; /* free inodes */ + uint64_t sb_fdblocks; /* free data blocks */ + uint64_t sb_frextents; /* free realtime extents */ + + /* this is not all... but enough for libblkid */ + +} __attribute__((packed)); + +#define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ +#define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ +#define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG) +#define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG) +#define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ +#define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ +#define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG) +#define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG) + +#define XFS_DINODE_MIN_LOG 8 +#define XFS_DINODE_MAX_LOG 11 +#define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG) +#define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG) + +#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024) /* 1GB */ +#define XFS_DFL_RTEXTSIZE (64 * 1024) /* 64kB */ +#define XFS_MIN_RTEXTSIZE (4 * 1024) /* 4kB */ + +#define XFS_MIN_AG_BLOCKS 64 +#define XFS_MAX_DBLOCKS(s) ((uint64_t)(s)->sb_agcount * (s)->sb_agblocks) +#define XFS_MIN_DBLOCKS(s) ((uint64_t)((s)->sb_agcount - 1) * \ + (s)->sb_agblocks + XFS_MIN_AG_BLOCKS) + + +static void sb_from_disk(struct xfs_super_block *from, + struct xfs_super_block *to) +{ + + to->sb_magicnum = be32_to_cpu(from->sb_magicnum); + to->sb_blocksize = be32_to_cpu(from->sb_blocksize); + to->sb_dblocks = be64_to_cpu(from->sb_dblocks); + to->sb_rblocks = be64_to_cpu(from->sb_rblocks); + to->sb_rextents = be64_to_cpu(from->sb_rextents); + to->sb_logstart = be64_to_cpu(from->sb_logstart); + to->sb_rootino = be64_to_cpu(from->sb_rootino); + to->sb_rbmino = be64_to_cpu(from->sb_rbmino); + to->sb_rsumino = be64_to_cpu(from->sb_rsumino); + to->sb_rextsize = be32_to_cpu(from->sb_rextsize); + to->sb_agblocks = be32_to_cpu(from->sb_agblocks); + to->sb_agcount = be32_to_cpu(from->sb_agcount); + to->sb_rbmblocks = be32_to_cpu(from->sb_rbmblocks); + to->sb_logblocks = be32_to_cpu(from->sb_logblocks); + to->sb_versionnum = be16_to_cpu(from->sb_versionnum); + to->sb_sectsize = be16_to_cpu(from->sb_sectsize); + to->sb_inodesize = be16_to_cpu(from->sb_inodesize); + to->sb_inopblock = be16_to_cpu(from->sb_inopblock); + to->sb_blocklog = from->sb_blocklog; + to->sb_sectlog = from->sb_sectlog; + to->sb_inodelog = from->sb_inodelog; + to->sb_inopblog = from->sb_inopblog; + to->sb_agblklog = from->sb_agblklog; + to->sb_rextslog = from->sb_rextslog; + to->sb_inprogress = from->sb_inprogress; + to->sb_imax_pct = from->sb_imax_pct; + to->sb_icount = be64_to_cpu(from->sb_icount); + to->sb_ifree = be64_to_cpu(from->sb_ifree); + to->sb_fdblocks = be64_to_cpu(from->sb_fdblocks); + to->sb_frextents = be64_to_cpu(from->sb_frextents); +} + +static int xfs_verify_sb(struct xfs_super_block *ondisk) +{ + struct xfs_super_block sb, *sbp = &sb; + + /* beXX_to_cpu(), but don't convert UUID and fsname! */ + sb_from_disk(ondisk, sbp); + + /* sanity checks, we don't want to rely on magic string only */ + if (sbp->sb_agcount <= 0 || + sbp->sb_sectsize < XFS_MIN_SECTORSIZE || + sbp->sb_sectsize > XFS_MAX_SECTORSIZE || + sbp->sb_sectlog < XFS_MIN_SECTORSIZE_LOG || + sbp->sb_sectlog > XFS_MAX_SECTORSIZE_LOG || + sbp->sb_sectsize != (1 << sbp->sb_sectlog) || + sbp->sb_blocksize < XFS_MIN_BLOCKSIZE || + sbp->sb_blocksize > XFS_MAX_BLOCKSIZE || + sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG || + sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG || + sbp->sb_blocksize != (1ULL << sbp->sb_blocklog) || + sbp->sb_inodesize < XFS_DINODE_MIN_SIZE || + sbp->sb_inodesize > XFS_DINODE_MAX_SIZE || + sbp->sb_inodelog < XFS_DINODE_MIN_LOG || + sbp->sb_inodelog > XFS_DINODE_MAX_LOG || + sbp->sb_inodesize != (1 << sbp->sb_inodelog) || + (sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) || + (sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) || + (sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) || + (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */) || + sbp->sb_dblocks == 0 || + sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp) || + sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp)) + return 0; + + /* TODO: version 5 has also checksum CRC32, maybe we can check it too */ + + return 1; +} + +static int probe_xfs(blkid_probe pr, const struct blkid_idmag *mag) +{ + struct xfs_super_block *xs; + + xs = blkid_probe_get_sb(pr, mag, struct xfs_super_block); + if (!xs) + return errno ? -errno : 1; + + if (!xfs_verify_sb(xs)) + return 1; + + if (*xs->sb_fname != '\0') + blkid_probe_set_label(pr, (unsigned char *) xs->sb_fname, + sizeof(xs->sb_fname)); + blkid_probe_set_uuid(pr, xs->sb_uuid); + blkid_probe_set_block_size(pr, be16_to_cpu(xs->sb_sectsize)); + return 0; +} + +const struct blkid_idinfo xfs_idinfo = +{ + .name = "xfs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_xfs, + .magics = + { + { .magic = "XFSB", .len = 4 }, + { NULL } + } +}; + +struct xlog_rec_header { + uint32_t h_magicno; + uint32_t h_dummy1[1]; + uint32_t h_version; + uint32_t h_len; + uint32_t h_dummy2[71]; + uint32_t h_fmt; + unsigned char h_uuid[16]; +} __attribute__((packed)); + +#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe + +/* + * For very small filesystems, the minimum log size + * can be smaller, but that seems vanishingly unlikely + * when used with an external log (which is used for + * performance reasons; tiny conflicts with that goal). + */ +#define XFS_MIN_LOG_BYTES (10 * 1024 * 1024) + +#define XLOG_FMT_LINUX_LE 1 +#define XLOG_FMT_LINUX_BE 2 +#define XLOG_FMT_IRIX_BE 3 + +#define XLOG_VERSION_1 1 +#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */ +#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2) + +static int xlog_valid_rec_header(struct xlog_rec_header *rhead) +{ + uint32_t hlen; + + if (rhead->h_magicno != cpu_to_be32(XLOG_HEADER_MAGIC_NUM)) + return 0; + + if (!rhead->h_version || + (be32_to_cpu(rhead->h_version) & (~XLOG_VERSION_OKBITS))) + return 0; + + /* LR body must have data or it wouldn't have been written */ + hlen = be32_to_cpu(rhead->h_len); + if (hlen <= 0 || hlen > INT_MAX) + return 0; + + if (rhead->h_fmt != cpu_to_be32(XLOG_FMT_LINUX_LE) && + rhead->h_fmt != cpu_to_be32(XLOG_FMT_LINUX_BE) && + rhead->h_fmt != cpu_to_be32(XLOG_FMT_IRIX_BE)) + return 0; + + return 1; +} + +/* xlog record header will be in some sector in the first 256k */ +static int probe_xfs_log(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + int i; + struct xlog_rec_header *rhead; + unsigned char *buf; + + buf = blkid_probe_get_buffer(pr, 0, 256*1024); + if (!buf) + return errno ? -errno : 1; + + /* check the first 512 512-byte sectors */ + for (i = 0; i < 512; i++) { + /* this is regular XFS (maybe with some sectors shift), ignore */ + if (memcmp(&buf[i*512], "XFSB", 4) == 0) + return 1; + + rhead = (struct xlog_rec_header *)&buf[i*512]; + + if (xlog_valid_rec_header(rhead)) { + blkid_probe_set_uuid_as(pr, rhead->h_uuid, "LOGUUID"); + + if (blkid_probe_set_magic(pr, i * 512, + sizeof(rhead->h_magicno), + (unsigned char *) &rhead->h_magicno)) + return 1; + + return 0; + } + } + + return 1; +} + +const struct blkid_idinfo xfs_log_idinfo = +{ + .name = "xfs_external_log", + .usage = BLKID_USAGE_OTHER, + .probefunc = probe_xfs_log, + .magics = BLKID_NONE_MAGIC, + .minsz = XFS_MIN_LOG_BYTES, +}; diff --git a/libblkid/src/superblocks/zfs.c b/libblkid/src/superblocks/zfs.c new file mode 100644 index 0000000..774a199 --- /dev/null +++ b/libblkid/src/superblocks/zfs.c @@ -0,0 +1,328 @@ +/* + * Copyright (C) 2009-2010 by Andreas Dilger <adilger@sun.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <inttypes.h> +#include <limits.h> + +#include "superblocks.h" + +#define VDEV_LABEL_UBERBLOCK (128 * 1024ULL) +#define VDEV_LABEL_NVPAIR ( 16 * 1024ULL) +#define VDEV_LABEL_SIZE (256 * 1024ULL) +#define UBERBLOCK_SIZE 1024ULL +#define UBERBLOCKS_COUNT 128 + +/* #include <sys/uberblock_impl.h> */ +#define UBERBLOCK_MAGIC 0x00bab10c /* oo-ba-bloc! */ +struct zfs_uberblock { + uint64_t ub_magic; /* UBERBLOCK_MAGIC */ + uint64_t ub_version; /* SPA_VERSION */ + uint64_t ub_txg; /* txg of last sync */ + uint64_t ub_guid_sum; /* sum of all vdev guids */ + uint64_t ub_timestamp; /* UTC time of last sync */ + char ub_rootbp; /* MOS objset_phys_t */ +} __attribute__((packed)); + +#define ZFS_WANT 4 + +#define DATA_TYPE_UINT64 8 +#define DATA_TYPE_STRING 9 +#define DATA_TYPE_DIRECTORY 19 + +struct nvpair { + uint32_t nvp_size; + uint32_t nvp_unkown; + uint32_t nvp_namelen; + char nvp_name[0]; /* aligned to 4 bytes */ + /* aligned ptr array for string arrays */ + /* aligned array of data for value */ +}; + +struct nvstring { + uint32_t nvs_type; + uint32_t nvs_elem; + uint32_t nvs_strlen; + unsigned char nvs_string[0]; +}; + +struct nvuint64 { + uint32_t nvu_type; + uint32_t nvu_elem; + uint64_t nvu_value; +} __attribute__((packed)); + +struct nvdirectory { + uint32_t nvd_type; + uint32_t nvd_unknown[3]; +}; + +struct nvlist { + uint32_t nvl_unknown[3]; + struct nvpair nvl_nvpair; +}; + +static void zfs_process_value(blkid_probe pr, char *name, size_t namelen, + void *value, size_t max_value_size, unsigned directory_level) +{ + if (strncmp(name, "name", namelen) == 0 && + sizeof(struct nvstring) <= max_value_size && + !directory_level) { + struct nvstring *nvs = value; + uint32_t nvs_type = be32_to_cpu(nvs->nvs_type); + uint32_t nvs_strlen = be32_to_cpu(nvs->nvs_strlen); + + if (nvs_type != DATA_TYPE_STRING || + (uint64_t)nvs_strlen + sizeof(*nvs) > max_value_size) + return; + + DBG(LOWPROBE, ul_debug("nvstring: type %u string %*s\n", + nvs_type, nvs_strlen, nvs->nvs_string)); + + blkid_probe_set_label(pr, nvs->nvs_string, nvs_strlen); + } else if (strncmp(name, "guid", namelen) == 0 && + sizeof(struct nvuint64) <= max_value_size && + !directory_level) { + struct nvuint64 *nvu = value; + uint32_t nvu_type = be32_to_cpu(nvu->nvu_type); + uint64_t nvu_value; + + memcpy(&nvu_value, &nvu->nvu_value, sizeof(nvu_value)); + nvu_value = be64_to_cpu(nvu_value); + + if (nvu_type != DATA_TYPE_UINT64) + return; + + DBG(LOWPROBE, ul_debug("nvuint64: type %u value %"PRIu64"\n", + nvu_type, nvu_value)); + + blkid_probe_sprintf_value(pr, "UUID_SUB", + "%"PRIu64, nvu_value); + } else if (strncmp(name, "pool_guid", namelen) == 0 && + sizeof(struct nvuint64) <= max_value_size && + !directory_level) { + struct nvuint64 *nvu = value; + uint32_t nvu_type = be32_to_cpu(nvu->nvu_type); + uint64_t nvu_value; + + memcpy(&nvu_value, &nvu->nvu_value, sizeof(nvu_value)); + nvu_value = be64_to_cpu(nvu_value); + + if (nvu_type != DATA_TYPE_UINT64) + return; + + DBG(LOWPROBE, ul_debug("nvuint64: type %u value %"PRIu64"\n", + nvu_type, nvu_value)); + + blkid_probe_sprintf_uuid(pr, (unsigned char *) &nvu_value, + sizeof(nvu_value), + "%"PRIu64, nvu_value); + } else if (strncmp(name, "ashift", namelen) == 0 && + sizeof(struct nvuint64) <= max_value_size) { + struct nvuint64 *nvu = value; + uint32_t nvu_type = be32_to_cpu(nvu->nvu_type); + uint64_t nvu_value; + + memcpy(&nvu_value, &nvu->nvu_value, sizeof(nvu_value)); + nvu_value = be64_to_cpu(nvu_value); + + if (nvu_type != DATA_TYPE_UINT64) + return; + + if (nvu_value < 32) + blkid_probe_set_block_size(pr, 1U << nvu_value); + } +} + +static void zfs_extract_guid_name(blkid_probe pr, loff_t offset) +{ + unsigned char *p; + struct nvlist *nvl; + struct nvpair *nvp; + size_t left = 4096; + unsigned directory_level = 0; + + offset = (offset & ~(VDEV_LABEL_SIZE - 1)) + VDEV_LABEL_NVPAIR; + + /* Note that we currently assume that the desired fields are within + * the first 4k (left) of the nvlist. This is true for all pools + * I've seen, and simplifies this code somewhat, because we don't + * have to handle an nvpair crossing a buffer boundary. */ + p = blkid_probe_get_buffer(pr, offset, left); + if (!p) + return; + + DBG(LOWPROBE, ul_debug("zfs_extract: nvlist offset %jd\n", + (intmax_t)offset)); + + nvl = (struct nvlist *) p; + nvp = &nvl->nvl_nvpair; + left -= (unsigned char *)nvp - p; /* Already used up 12 bytes */ + + while (left > sizeof(*nvp)) { + uint32_t nvp_size = be32_to_cpu(nvp->nvp_size); + uint32_t nvp_namelen = be32_to_cpu(nvp->nvp_namelen); + uint64_t namesize = ((uint64_t)nvp_namelen + 3) & ~3; + size_t max_value_size; + void *value; + + if (!nvp->nvp_size) { + if (!directory_level) + break; + directory_level--; + nvp_size = 8; + goto cont; + } + + DBG(LOWPROBE, ul_debug("left %zd nvp_size %u\n", + left, nvp_size)); + + /* nvpair fits in buffer and name fits in nvpair? */ + if (nvp_size > left || namesize + sizeof(*nvp) > nvp_size) + break; + + DBG(LOWPROBE, + ul_debug("nvlist: size %u, namelen %u, name %*s\n", + nvp_size, nvp_namelen, nvp_namelen, + nvp->nvp_name)); + + max_value_size = nvp_size - (namesize + sizeof(*nvp)); + value = nvp->nvp_name + namesize; + + if (sizeof(struct nvdirectory) <= max_value_size) { + struct nvdirectory *nvu = value; + if (be32_to_cpu(nvu->nvd_type) == DATA_TYPE_DIRECTORY) { + nvp_size = sizeof(*nvp) + namesize + sizeof(*nvu); + directory_level++; + goto cont; + } + } + + zfs_process_value(pr, nvp->nvp_name, nvp_namelen, + value, max_value_size, directory_level); + +cont: + if (nvp_size > left) + break; + left -= nvp_size; + + nvp = (struct nvpair *)((char *)nvp + nvp_size); + } +} + +static int find_uberblocks(const void *label, loff_t *ub_offset, int *swap_endian) +{ + uint64_t swab_magic = swab64((uint64_t)UBERBLOCK_MAGIC); + const struct zfs_uberblock *ub; + int i, found = 0; + loff_t offset = VDEV_LABEL_UBERBLOCK; + + for (i = 0; i < UBERBLOCKS_COUNT; i++, offset += UBERBLOCK_SIZE) { + ub = (const struct zfs_uberblock *)((const char *) label + offset); + + if (ub->ub_magic == UBERBLOCK_MAGIC) { + *ub_offset = offset; + *swap_endian = 0; + found++; + DBG(LOWPROBE, ul_debug("probe_zfs: found little-endian uberblock at %jd\n", (intmax_t)offset >> 10)); + } + + if (ub->ub_magic == swab_magic) { + *ub_offset = offset; + *swap_endian = 1; + found++; + DBG(LOWPROBE, ul_debug("probe_zfs: found big-endian uberblock at %jd\n", (intmax_t)offset >> 10)); + } + } + + return found; +} + +/* ZFS has 128x1kB host-endian root blocks, stored in 2 areas at the start + * of the disk, and 2 areas at the end of the disk. Check only some of them... + * #4 (@ 132kB) is the first one written on a new filesystem. */ +static int probe_zfs(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + int swab_endian = 0; + struct zfs_uberblock *ub = NULL; + loff_t offset = 0, ub_offset = 0; + int label_no, found = 0, found_in_label; + void *label; + loff_t blk_align = (pr->size % (256 * 1024ULL)); + + DBG(PROBE, ul_debug("probe_zfs\n")); + /* Look for at least 4 uberblocks to ensure a positive match */ + for (label_no = 0; label_no < 4; label_no++) { + switch(label_no) { + case 0: // jump to L0 + offset = 0; + break; + case 1: // jump to L1 + offset = VDEV_LABEL_SIZE; + break; + case 2: // jump to L2 + offset = pr->size - 2 * VDEV_LABEL_SIZE - blk_align; + break; + case 3: // jump to L3 + offset = pr->size - VDEV_LABEL_SIZE - blk_align; + break; + } + + if ((S_ISREG(pr->mode) || blkid_probe_is_wholedisk(pr)) && + blkid_probe_is_covered_by_pt(pr, offset, VDEV_LABEL_SIZE)) + /* ignore this area, it's within any partition and + * we are working with whole-disk now */ + continue; + + label = blkid_probe_get_buffer(pr, offset, VDEV_LABEL_SIZE); + if (label == NULL) + return errno ? -errno : 1; + + found_in_label = find_uberblocks(label, &ub_offset, &swab_endian); + + if (found_in_label > 0) { + found+= found_in_label; + ub = (struct zfs_uberblock *)((char *) label + ub_offset); + ub_offset += offset; + + if (found >= ZFS_WANT) + break; + } + } + + if (found < ZFS_WANT) + return 1; + + /* If we found the 4th uberblock, then we will have exited from the + * scanning loop immediately, and ub will be a valid uberblock. */ + blkid_probe_sprintf_version(pr, "%" PRIu64, swab_endian ? + swab64(ub->ub_version) : ub->ub_version); + + zfs_extract_guid_name(pr, offset); + + if (blkid_probe_set_magic(pr, ub_offset, + sizeof(ub->ub_magic), + (unsigned char *) &ub->ub_magic)) + return 1; + + return 0; +} + +const struct blkid_idinfo zfs_idinfo = +{ + .name = "zfs_member", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_zfs, + .minsz = 64 * 1024 * 1024, + .magics = BLKID_NONE_MAGIC +}; diff --git a/libblkid/src/superblocks/zonefs.c b/libblkid/src/superblocks/zonefs.c new file mode 100644 index 0000000..4c826ec --- /dev/null +++ b/libblkid/src/superblocks/zonefs.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2020 Western Digital Corporation or its affiliates. + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License + */ +#include <stddef.h> +#include <string.h> + +#include "superblocks.h" + +#define ZONEFS_MAGIC "SFOZ" /* 0x5a4f4653 'Z' 'O' 'F' 'S' */ +#define ZONEFS_MAGIC_SIZE 4 +#define ZONEFS_MAGIC_OFST 0 +#define ZONEFS_UUID_SIZE 16 +#define ZONEFS_LABEL_SIZE 32 +#define ZONEFS_SB_OFST 0 + +#define ZONEFS_BLOCK_SIZE 4096U + +/* All in little-endian */ +struct zonefs_super { + + /* Magic number */ + int32_t s_magic; + + /* Checksum */ + int32_t s_crc; + + /* Volume label */ + char s_label[ZONEFS_LABEL_SIZE]; + + /* 128-bit uuid */ + uint8_t s_uuid[ZONEFS_UUID_SIZE]; + + /* Features */ + int64_t s_features; + + /* UID/GID to use for files */ + int32_t s_uid; + int32_t s_gid; + + /* File permissions */ + int32_t s_perm; + + /* Padding to 4096 bytes */ + /* uint8_t s_reserved[4020]; */ + +} __attribute__ ((packed)); + +static int probe_zonefs(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + struct zonefs_super *sb; + + sb = (struct zonefs_super *) + blkid_probe_get_buffer(pr, ZONEFS_SB_OFST, + sizeof(struct zonefs_super)); + if (!sb) + return errno ? -errno : 1; + + if (sb->s_label[0]) + blkid_probe_set_label(pr, (unsigned char *) sb->s_label, + sizeof(sb->s_label)); + + blkid_probe_set_uuid(pr, sb->s_uuid); + blkid_probe_set_block_size(pr, ZONEFS_BLOCK_SIZE); + + return 0; +} + +const struct blkid_idinfo zonefs_idinfo = +{ + .name = "zonefs", + .usage = BLKID_USAGE_FILESYSTEM, + .probefunc = probe_zonefs, + .magics = + { + { + .magic = (char *)ZONEFS_MAGIC, + .len = ZONEFS_MAGIC_SIZE, + .kboff = ZONEFS_SB_OFST, + .sboff = ZONEFS_MAGIC_OFST, + }, + { NULL } + } +}; |