int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/)
{
struct nilfs2_super_block *sb;
// Primary super block
dbg("nilfs: probing at offset 0x%x", NILFS_SB1_OFFSET);
sb = volume_id_get_buffer(id, NILFS_SB1_OFFSET, sizeof(*sb));
if (sb == NULL)
return -1;
if (sb->s_magic != NILFS_MAGIC)
return -1;
// The secondary superblock is not always used, so ignore it for now.
// When used it is at 4K from the end of the partition (sb->s_dev_size - NILFS_SB2_OFFSET).
volume_id_set_label_string(id, sb->s_volume_name, NILFS_LABEL_SIZE < VOLUME_ID_LABEL_SIZE ?
NILFS_LABEL_SIZE : VOLUME_ID_LABEL_SIZE);
volume_id_set_uuid(id, sb->s_uuid, UUID_DCE);
if (sb->s_rev_level == 2)
IF_FEATURE_BLKID_TYPE(id->type = "nilfs2");
return 0;
}
int FAST_FUNC volume_id_probe_btrfs(struct volume_id *id /*,uint64_t off*/)
{
// btrfs has superblocks at 64K, 64M and 256G
// minimum btrfs size is 256M
// so we never step out the device if we analyze
// the first and the second superblocks
struct btrfs_super_block *sb;
unsigned off = 64;
while (off < 64*1024*1024) {
off *= 1024;
dbg("btrfs: probing at offset 0x%x", off);
sb = volume_id_get_buffer(id, off, sizeof(*sb));
if (sb == NULL)
return -1;
if (memcmp(sb->magic, BTRFS_MAGIC, 8) != 0)
return -1;
}
// N.B.: btrfs natively supports 256 (>VOLUME_ID_LABEL_SIZE) size labels
volume_id_set_label_string(id, sb->label, VOLUME_ID_LABEL_SIZE);
volume_id_set_uuid(id, sb->fsid, UUID_DCE);
return 0;
}
int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/)
{
#define off ((uint64_t)0)
struct romfs_super *rfs;
dbg("probing at offset 0x%llx", (unsigned long long) off);
rfs = volume_id_get_buffer(id, off, 0x200);
if (rfs == NULL)
return -1;
if (memcmp(rfs->magic, "-rom1fs-", 4) == 0) {
size_t len = strlen((char *)rfs->name);
if (len) {
// volume_id_set_label_raw(id, rfs->name, len);
volume_id_set_label_string(id, rfs->name, len);
}
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "romfs";
return 0;
}
return -1;
}
int volume_id_probe_ext(struct volume_id *id, uint64_t off)
{
struct ext2_super_block *es;
dbg("ext: probing at offset 0x%llx", (unsigned long long) off);
es = volume_id_get_buffer(id, off + EXT_SUPERBLOCK_OFFSET, 0x200);
if (es == NULL)
return -1;
if (es->magic[0] != 0123 || es->magic[1] != 0357) {
dbg("ext: no magic found");
return -1;
}
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// volume_id_set_label_raw(id, es->volume_name, 16);
volume_id_set_label_string(id, es->volume_name, 16);
volume_id_set_uuid(id, es->uuid, UUID_DCE);
dbg("ext: label '%s' uuid '%s'", id->label, id->uuid);
// if ((le32_to_cpu(es->feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0)
// id->type = "ext3";
// else
// id->type = "ext2";
return 0;
}
static int volume_id_probe_linux_raid1(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
struct mdp1_super_block *mdp1;
info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size);
buf = volume_id_get_buffer(id, off, 0x800);
if (buf == NULL)
return -1;
mdp1 = (struct mdp1_super_block *) buf;
if (le32_to_cpu(mdp1->magic) != MD_SB_MAGIC)
return -1;
if (le32_to_cpu(mdp1->major_version) != 1)
return -1;
volume_id_set_uuid(id, mdp1->set_uuid, 0, UUID_MD);
volume_id_set_label_raw(id, mdp1->set_name, 32);
volume_id_set_label_string(id, mdp1->set_name, 32);
volume_id_set_usage(id, VOLUME_ID_RAID);
id->type = "linux_raid_member";
return 0;
}
int volume_id_probe_sysv(struct volume_id *id, uint64_t off, uint64_t size)
{
struct sysv_super *vs;
struct xenix_super *xs;
unsigned int boff;
info("probing at offset 0x%llx", (unsigned long long) off);
for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
vs = (struct sysv_super *)
volume_id_get_buffer(id, off + (boff * SYSV_SUPERBLOCK_BLOCK), 0x200);
if (vs == NULL)
return -1;
if (vs->s_magic == cpu_to_le32(SYSV_MAGIC) || vs->s_magic == cpu_to_be32(SYSV_MAGIC)) {
volume_id_set_label_raw(id, vs->s_fname, 6);
volume_id_set_label_string(id, vs->s_fname, 6);
id->type = "sysv";
goto found;
}
}
for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
xs = (struct xenix_super *)
volume_id_get_buffer(id, off + (boff + XENIX_SUPERBLOCK_BLOCK), 0x200);
if (xs == NULL)
return -1;
if (xs->s_magic == cpu_to_le32(XENIX_MAGIC) || xs->s_magic == cpu_to_be32(XENIX_MAGIC)) {
volume_id_set_label_raw(id, xs->s_fname, 6);
volume_id_set_label_string(id, xs->s_fname, 6);
id->type = "xenix";
goto found;
}
}
return -1;
found:
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
return 0;
}
int volume_id_probe_ufs(struct volume_id *id, uint64_t off, uint64_t size)
{
uint32_t magic;
int i;
struct ufs_super_block *ufs;
int offsets[] = {0, 8, 64, 256, -1};
info("probing at offset 0x%" PRIx64 "\n", off);
for (i = 0; offsets[i] >= 0; i++) {
ufs = (struct ufs_super_block *) volume_id_get_buffer(id, off + (offsets[i] * 0x400), 0x800);
if (ufs == NULL)
return -1;
dbg("offset 0x%x\n", offsets[i] * 0x400);
magic = be32_to_cpu(ufs->fs_magic);
if ((magic == UFS_MAGIC) ||
(magic == UFS2_MAGIC) ||
(magic == UFS_MAGIC_FEA) ||
(magic == UFS_MAGIC_LFN)) {
dbg("magic 0x%08x(be)\n", magic);
goto found;
}
magic = le32_to_cpu(ufs->fs_magic);
if ((magic == UFS_MAGIC) ||
(magic == UFS2_MAGIC) ||
(magic == UFS_MAGIC_FEA) ||
(magic == UFS_MAGIC_LFN)) {
dbg("magic 0x%08x(le)\n", magic);
goto found;
}
}
return -1;
found:
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "ufs";
switch (magic) {
case UFS_MAGIC:
strcpy(id->type_version, "1");
break;
case UFS2_MAGIC:
strcpy(id->type_version, "2");
volume_id_set_label_raw(id, ufs->fs_u11.fs_u2.fs_volname, 32);
volume_id_set_label_string(id, ufs->fs_u11.fs_u2.fs_volname, 32);
break;
default:
break;
}
return 0;
}
int FAST_FUNC volume_id_probe_linux_swap(struct volume_id *id /*,uint64_t off*/)
{
#define off ((uint64_t)0)
struct swap_header_v1_2 *sw;
const uint8_t *buf;
unsigned page;
dbg("probing at offset 0x%llx", (unsigned long long) off);
/* the swap signature is at the end of the PAGE_SIZE */
for (page = 0x1000; page <= LARGEST_PAGESIZE; page <<= 1) {
buf = volume_id_get_buffer(id, off + page-10, 10);
if (buf == NULL)
return -1;
if (memcmp(buf, "SWAP-SPACE", 10) == 0) {
// id->type_version[0] = '1';
// id->type_version[1] = '\0';
goto found;
}
if (memcmp(buf, "SWAPSPACE2", 10) == 0
|| memcmp(buf, "S1SUSPEND", 9) == 0
|| memcmp(buf, "S2SUSPEND", 9) == 0
|| memcmp(buf, "ULSUSPEND", 9) == 0
) {
sw = volume_id_get_buffer(id, off, sizeof(struct swap_header_v1_2));
if (sw == NULL)
return -1;
// id->type_version[0] = '2';
// id->type_version[1] = '\0';
// volume_id_set_label_raw(id, sw->volume_name, 16);
volume_id_set_label_string(id, sw->volume_name, 16);
volume_id_set_uuid(id, sw->uuid, UUID_DCE);
goto found;
}
}
return -1;
found:
// volume_id_set_usage(id, VOLUME_ID_OTHER);
// id->type = "swap";
return 0;
}
int volume_id_probe_ext(struct volume_id *id, uint64_t off, uint64_t size)
{
struct ext2_super_block *es;
size_t bsize;
info("probing at offset 0x%llx", (unsigned long long) off);
es = (struct ext2_super_block *) volume_id_get_buffer(id, off + EXT_SUPERBLOCK_OFFSET, 0x200);
if (es == NULL)
return -1;
if (es->s_magic != cpu_to_le16(EXT_SUPER_MAGIC))
return -1;
bsize = 0x400 << le32_to_cpu(es->s_log_block_size);
dbg("ext blocksize 0x%zx", bsize);
if (bsize < EXT3_MIN_BLOCK_SIZE || bsize > EXT3_MAX_BLOCK_SIZE) {
dbg("invalid ext blocksize");
return -1;
}
volume_id_set_label_raw(id, es->s_volume_name, 16);
volume_id_set_label_string(id, es->s_volume_name, 16);
volume_id_set_uuid(id, es->s_uuid, 0, UUID_DCE);
snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u",
le32_to_cpu(es->s_rev_level), le16_to_cpu(es->s_minor_rev_level));
/* check for external journal device */
if ((le32_to_cpu(es->s_feature_incompat) & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) != 0) {
volume_id_set_usage(id, VOLUME_ID_OTHER);
id->type = "jbd";
return 0;
}
/* check for ext2 / ext3 */
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
if ((le32_to_cpu(es->s_feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0)
id->type = "ext3";
else
id->type = "ext2";
return 0;
}
int volume_id_probe_btrfs(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
struct btrfs_super_block *bfs;
info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size);
buf = volume_id_get_buffer(id, off + 0x10000, 0x200);
if (buf == NULL)
return -1;
bfs = (struct btrfs_super_block *)buf;
if (memcmp(bfs->magic, "_BHRfS_M", 8) != 0)
return -1;
volume_id_set_uuid(id, bfs->fsid, 0, UUID_DCE);
volume_id_set_uuid_sub(id, bfs->dev_item.uuid, 0, UUID_DCE);
volume_id_set_label_raw(id, bfs->label, 256);
volume_id_set_label_string(id, bfs->label, 256);
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "btrfs";
return 0;
}
int volume_id_probe_hpfs(struct volume_id *id, uint64_t off, uint64_t size)
{
struct hpfs_super *hs;
struct hpfs_spare_super *hss;
struct hpfs_boot_block *hbb;
uint8_t version;
info("probing at offset 0x%" PRIx64 "\n", off);
hs = (struct hpfs_super *) volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x400);
if (hs == NULL)
return -1;
if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) != 0)
return -1;
hss = (struct hpfs_spare_super *) volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_SPARE_OFFSET, 0x200);
if (hss == NULL)
return -1;
if (memcmp(hss->magic, "\x49\x18\x91\xf9", 4) != 0)
return -1;
version = hs->version;
/* if boot block looks valid, read label and uuid from there */
hbb = (struct hpfs_boot_block *) volume_id_get_buffer(id, off, 0x200);
if (hbb == NULL)
return -1;
if (memcmp(hbb->magic, "\x55\xaa", 2) == 0 &&
memcmp(hbb->sig_hpfs, "HPFS", 4) == 0 &&
hbb->sig_28h == 0x28) {
volume_id_set_label_raw(id, hbb->vol_label, 11);
volume_id_set_label_string(id, hbb->vol_label, 11);
volume_id_set_uuid(id, hbb->vol_serno, 0, UUID_DOS);
}
sprintf(id->type_version, "%u", version);
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "hpfs";
return 0;
}
int volume_id_probe_jfs(struct volume_id *id, uint64_t off, uint64_t size)
{
struct jfs_super_block *js;
info("probing at offset 0x%" PRIx64 "\n", off);
js = (struct jfs_super_block *) volume_id_get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200);
if (js == NULL)
return -1;
if (memcmp(js->magic, "JFS1", 4) != 0)
return -1;
volume_id_set_label_raw(id, js->label, 16);
volume_id_set_label_string(id, js->label, 16);
volume_id_set_uuid(id, js->uuid, 0, UUID_DCE);
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "jfs";
return 0;
}
int volume_id_probe_jfs(struct volume_id *id, uint64_t off)
{
struct jfs_super_block *js;
dbg("probing at offset 0x%llx", (unsigned long long) off);
js = volume_id_get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200);
if (js == NULL)
return -1;
if (memcmp(js->magic, "JFS1", 4) != 0)
return -1;
// volume_id_set_label_raw(id, js->label, 16);
volume_id_set_label_string(id, js->label, 16);
volume_id_set_uuid(id, js->uuid, UUID_DCE);
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// id->type = "jfs";
return 0;
}
int volume_id_probe_ocfs2(struct volume_id *id, uint64_t off)
{
struct ocfs2_super_block *os;
dbg("probing at offset 0x%llx", (unsigned long long) off);
os = volume_id_get_buffer(id, off + OCFS2_SUPERBLOCK_OFFSET, 0x200);
if (os == NULL)
return -1;
if (memcmp(os->i_signature, "OCFSV2", 6) != 0) {
return -1;
}
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// volume_id_set_label_raw(id, os->s_label, OCFS2_MAX_VOL_LABEL_LEN < VOLUME_ID_LABEL_SIZE ?
// OCFS2_MAX_VOL_LABEL_LEN : VOLUME_ID_LABEL_SIZE);
volume_id_set_label_string(id, os->s_label, OCFS2_MAX_VOL_LABEL_LEN < VOLUME_ID_LABEL_SIZE ?
OCFS2_MAX_VOL_LABEL_LEN : VOLUME_ID_LABEL_SIZE);
volume_id_set_uuid(id, os->s_uuid, UUID_DCE);
// id->type = "ocfs2";
return 0;
}
int FAST_FUNC volume_id_probe_vfat(struct volume_id *id /*,uint64_t fat_partition_off*/)
{
#define fat_partition_off ((uint64_t)0)
struct vfat_super_block *vs;
struct vfat_dir_entry *dir;
uint16_t sector_size_bytes;
uint16_t dir_entries;
uint32_t sect_count;
uint16_t reserved_sct;
uint32_t fat_size_sct;
uint32_t root_cluster;
uint32_t dir_size_sct;
uint32_t cluster_count;
uint64_t root_start_off;
uint32_t start_data_sct;
uint8_t *buf;
uint32_t buf_size;
uint8_t *label = NULL;
uint32_t next_cluster;
int maxloop;
dbg("probing at offset 0x%llx", (unsigned long long) fat_partition_off);
vs = volume_id_get_buffer(id, fat_partition_off, 0x200);
if (vs == NULL)
return -1;
/* believe only that's fat, don't trust the version
* the cluster_count will tell us
*/
if (memcmp(vs->sysid, "NTFS", 4) == 0)
return -1;
if (memcmp(vs->type.fat32.magic, "MSWIN", 5) == 0)
goto valid;
if (memcmp(vs->type.fat32.magic, "FAT32 ", 8) == 0)
goto valid;
if (memcmp(vs->type.fat.magic, "FAT16 ", 8) == 0)
goto valid;
if (memcmp(vs->type.fat.magic, "MSDOS", 5) == 0)
goto valid;
if (memcmp(vs->type.fat.magic, "FAT12 ", 8) == 0)
goto valid;
/*
* There are old floppies out there without a magic, so we check
* for well known values and guess if it's a fat volume
*/
/* boot jump address check */
if ((vs->boot_jump[0] != 0xeb || vs->boot_jump[2] != 0x90)
&& vs->boot_jump[0] != 0xe9
) {
return -1;
}
/* heads check */
if (vs->heads == 0)
return -1;
/* cluster size check */
if (vs->sectors_per_cluster == 0
|| (vs->sectors_per_cluster & (vs->sectors_per_cluster-1))
) {
return -1;
}
/* media check */
if (vs->media < 0xf8 && vs->media != 0xf0)
return -1;
/* fat count*/
if (vs->fats != 2)
return -1;
valid:
/* sector size check */
sector_size_bytes = le16_to_cpu(vs->sector_size_bytes);
if (sector_size_bytes != 0x200 && sector_size_bytes != 0x400
&& sector_size_bytes != 0x800 && sector_size_bytes != 0x1000
) {
return -1;
}
dbg("sector_size_bytes 0x%x", sector_size_bytes);
dbg("sectors_per_cluster 0x%x", vs->sectors_per_cluster);
reserved_sct = le16_to_cpu(vs->reserved_sct);
dbg("reserved_sct 0x%x", reserved_sct);
sect_count = le16_to_cpu(vs->sectors);
if (sect_count == 0)
sect_count = le32_to_cpu(vs->total_sect);
dbg("sect_count 0x%x", sect_count);
fat_size_sct = le16_to_cpu(vs->fat_length);
if (fat_size_sct == 0)
fat_size_sct = le32_to_cpu(vs->type.fat32.fat32_length);
fat_size_sct *= vs->fats;
dbg("fat_size_sct 0x%x", fat_size_sct);
dir_entries = le16_to_cpu(vs->dir_entries);
dir_size_sct = ((dir_entries * sizeof(struct vfat_dir_entry)) +
(sector_size_bytes-1)) / sector_size_bytes;
dbg("dir_size_sct 0x%x", dir_size_sct);
cluster_count = sect_count - (reserved_sct + fat_size_sct + dir_size_sct);
cluster_count /= vs->sectors_per_cluster;
dbg("cluster_count 0x%x", cluster_count);
// if (cluster_count < FAT12_MAX) {
// strcpy(id->type_version, "FAT12");
// } else if (cluster_count < FAT16_MAX) {
// strcpy(id->type_version, "FAT16");
// } else {
// strcpy(id->type_version, "FAT32");
// goto fat32;
// }
if (cluster_count >= FAT16_MAX)
goto fat32;
/* the label may be an attribute in the root directory */
root_start_off = (reserved_sct + fat_size_sct) * sector_size_bytes;
dbg("root dir start 0x%llx", (unsigned long long) root_start_off);
dbg("expected entries 0x%x", dir_entries);
buf_size = dir_entries * sizeof(struct vfat_dir_entry);
buf = volume_id_get_buffer(id, fat_partition_off + root_start_off, buf_size);
if (buf == NULL)
goto ret;
label = get_attr_volume_id((struct vfat_dir_entry*) buf, dir_entries);
vs = volume_id_get_buffer(id, fat_partition_off, 0x200);
if (vs == NULL)
return -1;
if (label != NULL && memcmp(label, "NO NAME ", 11) != 0) {
// volume_id_set_label_raw(id, label, 11);
volume_id_set_label_string(id, label, 11);
} else if (memcmp(vs->type.fat.label, "NO NAME ", 11) != 0) {
// volume_id_set_label_raw(id, vs->type.fat.label, 11);
volume_id_set_label_string(id, vs->type.fat.label, 11);
}
volume_id_set_uuid(id, vs->type.fat.serno, UUID_DOS);
goto ret;
fat32:
/* FAT32 root dir is a cluster chain like any other directory */
buf_size = vs->sectors_per_cluster * sector_size_bytes;
root_cluster = le32_to_cpu(vs->type.fat32.root_cluster);
start_data_sct = reserved_sct + fat_size_sct;
next_cluster = root_cluster;
maxloop = 100;
while (--maxloop) {
uint64_t next_off_sct;
uint64_t next_off;
uint64_t fat_entry_off;
int count;
dbg("next_cluster 0x%x", (unsigned)next_cluster);
next_off_sct = (uint64_t)(next_cluster - 2) * vs->sectors_per_cluster;
next_off = (start_data_sct + next_off_sct) * sector_size_bytes;
dbg("cluster offset 0x%llx", (unsigned long long) next_off);
/* get cluster */
buf = volume_id_get_buffer(id, fat_partition_off + next_off, buf_size);
if (buf == NULL)
goto ret;
dir = (struct vfat_dir_entry*) buf;
count = buf_size / sizeof(struct vfat_dir_entry);
dbg("expected entries 0x%x", count);
label = get_attr_volume_id(dir, count);
if (label)
break;
/* get FAT entry */
fat_entry_off = (reserved_sct * sector_size_bytes) + (next_cluster * sizeof(uint32_t));
dbg("fat_entry_off 0x%llx", (unsigned long long)fat_entry_off);
buf = volume_id_get_buffer(id, fat_partition_off + fat_entry_off, buf_size);
if (buf == NULL)
goto ret;
/* set next cluster */
next_cluster = le32_to_cpu(*(uint32_t*)buf) & 0x0fffffff;
if (next_cluster < 2 || next_cluster > FAT32_MAX)
break;
}
if (maxloop == 0)
dbg("reached maximum follow count of root cluster chain, give up");
vs = volume_id_get_buffer(id, fat_partition_off, 0x200);
if (vs == NULL)
return -1;
if (label != NULL && memcmp(label, "NO NAME ", 11) != 0) {
// volume_id_set_label_raw(id, label, 11);
volume_id_set_label_string(id, label, 11);
} else if (memcmp(vs->type.fat32.label, "NO NAME ", 11) != 0) {
// volume_id_set_label_raw(id, vs->type.fat32.label, 11);
volume_id_set_label_string(id, vs->type.fat32.label, 11);
}
volume_id_set_uuid(id, vs->type.fat32.serno, UUID_DOS);
ret:
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// id->type = "vfat";
return 0;
}
int volume_id_probe_iso9660(struct volume_id *id, uint64_t off, uint64_t size)
{
uint8_t *buf;
struct iso_volume_descriptor *is;
struct high_sierra_volume_descriptor *hs;
info("probing at offset 0x%llx", (unsigned long long) off);
buf = volume_id_get_buffer(id, off + ISO_SUPERBLOCK_OFFSET, 0x200);
if (buf == NULL)
return -1;
is = (struct iso_volume_descriptor *) buf;
if (memcmp(is->id, "CD001", 5) == 0) {
int vd_offset;
int i;
dbg("read label from PVD");
volume_id_set_label_raw(id, is->volume_id, 32);
volume_id_set_label_string(id, is->volume_id, 32);
dbg("looking for SVDs");
vd_offset = ISO_VD_OFFSET;
for (i = 0; i < ISO_VD_MAX; i++) {
uint8_t svd_label[64];
is = (struct iso_volume_descriptor *) volume_id_get_buffer(id, off + vd_offset, 0x200);
if (is == NULL || is->type == ISO_VD_END)
break;
if (is->type != ISO_VD_SUPPLEMENTARY)
continue;
dbg("found SVD at offset 0x%llx", (unsigned long long) (off + vd_offset));
if (memcmp(is->escape_sequences, "%/@", 3) == 0||
memcmp(is->escape_sequences, "%/C", 3) == 0||
memcmp(is->escape_sequences, "%/E", 3) == 0) {
dbg("Joliet extension found");
volume_id_set_unicode16((char *)svd_label, sizeof(svd_label), is->volume_id, BE, 32);
if (memcmp(id->label, svd_label, 16) == 0) {
dbg("SVD label is identical, use the possibly longer PVD one");
break;
}
volume_id_set_label_raw(id, is->volume_id, 32);
volume_id_set_label_string(id, svd_label, 32);
strcpy(id->type_version, "Joliet Extension");
goto found;
}
vd_offset += ISO_SECTOR_SIZE;
}
goto found;
}
hs = (struct high_sierra_volume_descriptor *) buf;
if (memcmp(hs->id, "CDROM", 5) == 0) {
strcpy(id->type_version, "High Sierra");
goto found;
}
return -1;
found:
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "iso9660";
return 0;
}
int FAST_FUNC volume_id_probe_udf(struct volume_id *id /*,uint64_t off*/)
{
#define off ((uint64_t)0)
struct volume_descriptor *vd;
struct volume_structure_descriptor *vsd;
unsigned bs;
unsigned b;
unsigned type;
unsigned count;
unsigned loc;
unsigned clen;
dbg("probing at offset 0x%llx", (unsigned long long) off);
vsd = volume_id_get_buffer(id, off + UDF_VSD_OFFSET, 0x200);
if (vsd == NULL)
return -1;
if (memcmp(vsd->id, "NSR02", 5) == 0)
goto blocksize;
if (memcmp(vsd->id, "NSR03", 5) == 0)
goto blocksize;
if (memcmp(vsd->id, "BEA01", 5) == 0)
goto blocksize;
if (memcmp(vsd->id, "BOOT2", 5) == 0)
goto blocksize;
if (memcmp(vsd->id, "CD001", 5) == 0)
goto blocksize;
if (memcmp(vsd->id, "CDW02", 5) == 0)
goto blocksize;
if (memcmp(vsd->id, "TEA03", 5) == 0)
goto blocksize;
return -1;
blocksize:
/* search the next VSD to get the logical block size of the volume */
for (bs = 0x800; bs < 0x8000; bs += 0x800) {
vsd = volume_id_get_buffer(id, off + UDF_VSD_OFFSET + bs, 0x800);
if (vsd == NULL)
return -1;
dbg("test for blocksize: 0x%x", bs);
if (vsd->id[0] != '\0')
goto nsr;
}
return -1;
nsr:
/* search the list of VSDs for a NSR descriptor */
for (b = 0; b < 64; b++) {
vsd = volume_id_get_buffer(id, off + UDF_VSD_OFFSET + (b * bs), 0x800);
if (vsd == NULL)
return -1;
dbg("vsd: %c%c%c%c%c",
vsd->id[0], vsd->id[1], vsd->id[2], vsd->id[3], vsd->id[4]);
if (vsd->id[0] == '\0')
return -1;
if (memcmp(vsd->id, "NSR02", 5) == 0)
goto anchor;
if (memcmp(vsd->id, "NSR03", 5) == 0)
goto anchor;
}
return -1;
anchor:
/* read anchor volume descriptor */
vd = volume_id_get_buffer(id, off + (256 * bs), 0x200);
if (vd == NULL)
return -1;
type = le16_to_cpu(vd->tag.id);
if (type != 2) /* TAG_ID_AVDP */
goto found;
/* get desriptor list address and block count */
count = le32_to_cpu(vd->type.anchor.length) / bs;
loc = le32_to_cpu(vd->type.anchor.location);
dbg("0x%x descriptors starting at logical secor 0x%x", count, loc);
/* pick the primary descriptor from the list */
for (b = 0; b < count; b++) {
vd = volume_id_get_buffer(id, off + ((loc + b) * bs), 0x200);
if (vd == NULL)
return -1;
type = le16_to_cpu(vd->tag.id);
dbg("descriptor type %i", type);
/* check validity */
if (type == 0)
goto found;
if (le32_to_cpu(vd->tag.location) != loc + b)
goto found;
if (type == 1) /* TAG_ID_PVD */
goto pvd;
}
goto found;
pvd:
// volume_id_set_label_raw(id, &(vd->type.primary.ident.clen), 32);
clen = vd->type.primary.ident.clen;
dbg("label string charsize=%i bit", clen);
if (clen == 8)
volume_id_set_label_string(id, vd->type.primary.ident.c, 31);
else if (clen == 16)
volume_id_set_label_unicode16(id, vd->type.primary.ident.c, BE, 31);
found:
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// id->type = "udf";
return 0;
}
