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_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
uint64_t meta_off;
struct via_meta *via;
dbg("probing at offset 0x%llx, size 0x%llx",
(unsigned long long) off, (unsigned long long) size);
if (size < 0x10000)
return -1;
meta_off = ((size / 0x200)-1) * 0x200;
via = volume_id_get_buffer(id, off + meta_off, 0x200);
if (via == NULL)
return -1;
if (via->signature != cpu_to_le16(VIA_SIGNATURE))
return -1;
if (via->version_number > 1)
return -1;
// volume_id_set_usage(id, VOLUME_ID_RAID);
// id->type_version[0] = '0' + via->version_number;
// id->type_version[1] = '\0';
// id->type = "via_raid_member";
return 0;
}
int FAST_FUNC volume_id_probe_lvm2(struct volume_id *id, uint64_t off)
{
const uint8_t *buf;
unsigned soff;
struct lvm2_super_block *lvm;
dbg("probing at offset 0x%llx", (unsigned long long) off);
buf = volume_id_get_buffer(id, off, LVM2LABEL_SCAN_SECTORS * 0x200);
if (buf == NULL)
return -1;
for (soff = 0; soff < LVM2LABEL_SCAN_SECTORS * 0x200; soff += 0x200) {
lvm = (struct lvm2_super_block *) &buf[soff];
if (memcmp(lvm->id, LVM2_LABEL_ID, 8) == 0)
goto found;
}
return -1;
found:
// memcpy(id->type_version, lvm->type, 8);
// volume_id_set_usage(id, VOLUME_ID_RAID);
// id->type = "LVM2_member";
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_lvm2(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
unsigned int soff;
struct lvm2_super_block *lvm;
struct lvm2_pv_header *pvhdr;
dbg("probing at offset 0x%" PRIx64 "\n", off);
buf = volume_id_get_buffer(id, off, LVM2LABEL_SCAN_SECTORS * 0x200);
if (buf == NULL)
return -1;
for (soff = 0; soff < LVM2LABEL_SCAN_SECTORS * 0x200; soff += 0x200) {
lvm = (struct lvm2_super_block *) &buf[soff];
if (memcmp(lvm->id, LVM2_LABEL_ID, 8) == 0)
goto found;
}
return -1;
found:
dbg("found at offset 0x%x (pv hdr offset 0x%x)\n",
soff, cpu_to_le32(lvm->offset_xl));
soff += cpu_to_le32(lvm->offset_xl);
pvhdr = (struct lvm2_pv_header *) &buf[soff];
memcpy(id->type_version, lvm->type, 8);
volume_id_set_usage(id, VOLUME_ID_RAID);
volume_id_set_uuid(id, pvhdr->id, 0, UUID_LVM);
id->type = "LVM2_member";
return 0;
}
int volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
uint64_t meta_off;
struct isw_meta *isw;
info("probing at offset 0x%llx, size 0x%llx",
(unsigned long long) off, (unsigned long long) size);
if (size < 0x10000)
return -1;
meta_off = ((size / 0x200)-2) * 0x200;
buf = volume_id_get_buffer(id, off + meta_off, 0x200);
if (buf == NULL)
return -1;
isw = (struct isw_meta *) buf;
if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0)
return -1;
volume_id_set_usage(id, VOLUME_ID_RAID);
memcpy(id->type_version, &isw->sig[sizeof(ISW_SIGNATURE)-1], 6);
id->type = "isw_raid_member";
return 0;
}
/* Put the label in *label and uuid in *uuid.
* Return 0 if no label/uuid found, NZ if there is a label or uuid.
*/
int find_label_or_uuid(char *dev_name, char *label, char *uuid)
{
struct volume_id id;
memset(&id, 0x00, sizeof(id));
if (label) *label = 0;
if (uuid) *uuid = 0;
if ((id.fd = open(dev_name, O_RDONLY)) < 0)
return 0;
volume_id_get_buffer(&id, 0, SB_BUFFER_SIZE);
if (volume_id_probe_linux_swap(&id) == 0 || id.error)
goto ret;
if (volume_id_probe_vfat(&id) == 0 || id.error)
goto ret;
if (volume_id_probe_ext(&id) == 0 || id.error)
goto ret;
if (volume_id_probe_ntfs(&id) == 0 || id.error)
goto ret;
#if defined(RTCONFIG_HFS)
if(volume_id_probe_hfs_hfsplus(&id) == 0 || id.error)
goto ret;
#endif
ret:
volume_id_free_buffer(&id);
if (label && (*id.label != 0))
strcpy(label, id.label);
if (uuid && (*id.uuid != 0))
strcpy(uuid, id.uuid);
close(id.fd);
return (label && *label != 0) || (uuid && *uuid != 0);
}
int volume_id_probe_squashfs(struct volume_id *id, uint64_t off, uint64_t size)
{
struct squashfs_super *sqs;
info("probing at offset 0x%" PRIx64 "\n", off);
sqs = (struct squashfs_super *) volume_id_get_buffer(id, off, 0x200);
if (sqs == NULL)
return -1;
if (sqs->s_magic == SQUASHFS_MAGIC || sqs->s_magic == SQUASHFS_MAGIC_LZMA) {
snprintf(id->type_version, sizeof(id->type_version), "%u.%u",
sqs->s_major, sqs->s_minor);
goto found;
}
if (sqs->s_magic == bswap_32(SQUASHFS_MAGIC) || sqs->s_magic == bswap_32(SQUASHFS_MAGIC_LZMA)) {
snprintf(id->type_version, sizeof(id->type_version), "%u.%u",
bswap_16(sqs->s_major), bswap_16(sqs->s_minor));
goto found;
}
return -1;
found:
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "squashfs";
return 0;
}
int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
uint64_t meta_off;
struct silicon_meta *sil;
dbg("probing at offset 0x%llx, size 0x%llx",
(unsigned long long) off, (unsigned long long) size);
if (size < 0x10000)
return -1;
meta_off = ((size / 0x200)-1) * 0x200;
sil = volume_id_get_buffer(id, off + meta_off, 0x200);
if (sil == NULL)
return -1;
if (sil->magic != cpu_to_le32(SILICON_MAGIC))
return -1;
// volume_id_set_usage(id, VOLUME_ID_RAID);
// snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u",
// le16_to_cpu(sil->major_ver), le16_to_cpu(sil->minor_ver));
// id->type = "silicon_medley_raid_member";
return 0;
}
int volume_id_probe_highpoint_45x_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
struct hpt45x_meta *hpt;
uint64_t meta_off;
uint32_t magic;
dbg("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size);
if (size < 0x10000)
return -1;
meta_off = ((size / 0x200)-11) * 0x200;
buf = volume_id_get_buffer(id, off + meta_off, 0x200);
if (buf == NULL)
return -1;
hpt = (struct hpt45x_meta *) buf;
magic = le32_to_cpu(hpt->magic);
if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD)
return -1;
volume_id_set_usage(id, VOLUME_ID_RAID);
id->type = "highpoint_raid_member";
return 0;
}
int find_partition_label(const char *dev_name, char *label){
struct volume_id id;
char dev_path[128];
memset(dev_path, 0, 128);
sprintf(dev_path, "/dev/%s", dev_name);
memset(&id, 0x00, sizeof(id));
if((id.fd = open(dev_path, O_RDONLY)) < 0)
return 0;
if(label) *label = 0;
volume_id_get_buffer(&id, 0, SB_BUFFER_SIZE);
if(volume_id_probe_linux_swap(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_ext(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_vfat(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_ntfs(&id) == 0 || id.error)
goto ret;
ret:
volume_id_free_buffer(&id);
if(label && (*id.label != 0))
strcpy(label, id.label);
close(id.fd);
return (label && *label != 0);
}
int FAST_FUNC volume_id_probe_f2fs(struct volume_id *id /*,uint64_t off*/)
{
struct f2fs_super_block *sb;
// Go for primary super block (ignore second sb)
dbg("f2fs: probing at offset 0x%x", F2FS_SB1_OFFSET);
sb = volume_id_get_buffer(id, F2FS_SB1_OFFSET, sizeof(*sb));
if (!sb)
return -1;
if (sb->magic != cpu_to_le32(F2FS_MAGIC))
return -1;
IF_FEATURE_BLKID_TYPE(id->type = "f2fs");
// For version 1.0 we don't know sb structure and can't set label/uuid
if (sb->major_ver == cpu_to_le16(1) && sb->minor_ver == cpu_to_le16(0))
return 0;
volume_id_set_label_unicode16(id, (uint8_t *)sb->volume_name,
LE, MIN(F2FS_LABEL_BYTES, VOLUME_ID_LABEL_SIZE));
volume_id_set_uuid(id, sb->uuid, UUID_DCE);
return 0;
}
int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
uint64_t meta_off;
struct nvidia_meta *nv;
dbg("probing at offset 0x%llx, size 0x%llx",
(unsigned long long) off, (unsigned long long) size);
if (size < 0x10000)
return -1;
meta_off = ((size / 0x200)-2) * 0x200;
nv = volume_id_get_buffer(id, off + meta_off, 0x200);
if (nv == NULL)
return -1;
if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0)
return -1;
// volume_id_set_usage(id, VOLUME_ID_RAID);
// snprintf(id->type_version, sizeof(id->type_version)-1, "%u", le16_to_cpu(nv->version));
// id->type = "nvidia_raid_member";
return 0;
}
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 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;
}
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 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;
}
static int volume_id_probe_linux_raid0(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
struct mdp0_super_block *mdp0;
union {
uint32_t ints[4];
uint8_t bytes[16];
} uuid;
info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size);
if (size < 0x10000)
return -1;
buf = volume_id_get_buffer(id, off, 0x800);
if (buf == NULL)
return -1;
mdp0 = (struct mdp0_super_block *) buf;
if (le32_to_cpu(mdp0->md_magic) == MD_SB_MAGIC) {
uuid.ints[0] = bswap_32(mdp0->set_uuid0);
if (le32_to_cpu(mdp0->minor_version >= 90)) {
uuid.ints[1] = bswap_32(mdp0->set_uuid1);
uuid.ints[2] = bswap_32(mdp0->set_uuid2);
uuid.ints[3] = bswap_32(mdp0->set_uuid3);
} else {
uuid.ints[1] = 0;
uuid.ints[2] = 0;
uuid.ints[3] = 0;
}
volume_id_set_uuid(id, uuid.bytes, 0, UUID_MD);
snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u.%u",
le32_to_cpu(mdp0->major_version),
le32_to_cpu(mdp0->minor_version),
le32_to_cpu(mdp0->patch_version));
} 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;
} else {
uuid.ints[1] = 0;
uuid.ints[2] = 0;
uuid.ints[3] = 0;
}
volume_id_set_uuid(id, uuid.bytes, 0, UUID_MD);
snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u.%u",
be32_to_cpu(mdp0->major_version),
be32_to_cpu(mdp0->minor_version),
be32_to_cpu(mdp0->patch_version));
} else
return -1;
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 find_partition_label(const char *dev_name, char *label, int partition_order) {
struct volume_id id;
char dev_path[128];
char usb_port[8];
int port_num;
char nvram_label[32], nvram_value[512];
if(label) *label = 0;
memset(usb_port, 0, 8);
if(get_usb_port_by_device(dev_name, usb_port, 8) == NULL)
return 0;
port_num = get_usb_port_number(usb_port);
memset(nvram_label, 0, 32);
sprintf(nvram_label, "usb_path%d_label%d", port_num, partition_order);
memset(nvram_value, 0, 512);
strncpy(nvram_value, nvram_safe_get(nvram_label), 512);
if(strlen(nvram_value) > 0) {
strcpy(label, nvram_value);
return (label && *label != 0);
}
memset(dev_path, 0, 128);
sprintf(dev_path, "/dev/%s", dev_name);
memset(&id, 0x00, sizeof(id));
if((id.fd = open(dev_path, O_RDONLY)) < 0)
return 0;
volume_id_get_buffer(&id, 0, SB_BUFFER_SIZE);
if(volume_id_probe_linux_swap(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_ext(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_vfat(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_ntfs(&id) == 0 || id.error)
goto ret;
if(volume_id_probe_hfs_hfsplus(&id) == 0 || id.error)
goto ret;
ret:
volume_id_free_buffer(&id);
if(label && (*id.label != 0))
strcpy(label, id.label);
else
strcpy(label, " ");
nvram_set(nvram_label, label);
close(id.fd);
return (label && *label != 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_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 volume_id_probe_minix(struct volume_id *id, uint64_t off, uint64_t size)
{
uint8_t *buf;
struct minix_super_block *ms;
struct minix3_super_block *m3s;
info("probing at offset 0x%" PRIx64 "\n", off);
buf = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
if (buf == NULL)
return -1;
ms = (struct minix_super_block *) buf;
if (ms->s_magic == MINIX_SUPER_MAGIC ||
ms->s_magic == bswap_16(MINIX_SUPER_MAGIC)) {
strcpy(id->type_version, "1");
goto found;
}
if (ms->s_magic == MINIX_SUPER_MAGIC2 ||
ms->s_magic == bswap_16(MINIX_SUPER_MAGIC2)) {
strcpy(id->type_version, "1");
goto found;
}
if (ms->s_magic == MINIX2_SUPER_MAGIC ||
ms->s_magic == bswap_16(MINIX2_SUPER_MAGIC)) {
strcpy(id->type_version, "2");
goto found;
}
if (ms->s_magic == MINIX2_SUPER_MAGIC2 ||
ms->s_magic == bswap_16(MINIX2_SUPER_MAGIC2)) {
strcpy(id->type_version, "2");
goto found;
}
m3s = (struct minix3_super_block *) buf;
if (m3s->s_magic == MINIX3_SUPER_MAGIC ||
m3s->s_magic == bswap_16(MINIX3_SUPER_MAGIC)) {
strcpy(id->type_version, "3");
goto found;
}
goto exit;
found:
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "minix";
return 0;
exit:
return -1;
}
int FAST_FUNC volume_id_probe_all(struct volume_id *id, /*uint64_t off,*/ uint64_t size)
{
unsigned i, arsize;
/* probe for raid first, cause fs probes may be successful on raid members */
if (size) {
arsize=ARRAY_SIZE(raid1);
for (i = 0; i < arsize; i++) {
if (raid1[i](id, /*off,*/ size) == 0)
goto ret;
if (id->error)
goto ret;
}
}
arsize=ARRAY_SIZE(raid2);
for (i = 0; i < arsize; i++) {
if (raid2[i](id /*,off*/) == 0)
goto ret;
if (id->error)
goto ret;
}
/* signature in the first block, only small buffer needed */
arsize=ARRAY_SIZE(fs1);
for (i = 0; i < arsize; i++) {
if (fs1[i](id /*,off*/) == 0)
goto ret;
if (id->error)
goto ret;
}
/* fill buffer with maximum */
volume_id_get_buffer(id, 0, SB_BUFFER_SIZE);
arsize=ARRAY_SIZE(fs2);
for (i = 0; i < arsize; i++) {
if (fs2[i](id /*,off*/) == 0)
break;
if (id->error)
break;
}
volume_id_free_buffer(id);
ret:
return (- id->error); /* 0 or -1 */
}
int volume_id_probe_luks(struct volume_id *id, uint64_t off, uint64_t size)
{
struct luks_phdr *header;
header = (struct luks_phdr*) volume_id_get_buffer(id, off, LUKS_PHDR_SIZE);
if (header == NULL)
return -1;
if (memcmp(header->magic, LUKS_MAGIC, LUKS_MAGIC_L))
return -1;
volume_id_set_usage(id, VOLUME_ID_CRYPTO);
volume_id_set_uuid(id, header->uuid, 36, UUID_HEX_STRING);
id->type = "crypto_LUKS";
return 0;
}
int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/)
{
#define off ((uint64_t)0)
struct luks_phdr *header;
header = volume_id_get_buffer(id, off, sizeof(*header));
if (header == NULL)
return -1;
if (memcmp(header->magic, LUKS_MAGIC, LUKS_MAGIC_L))
return -1;
// volume_id_set_usage(id, VOLUME_ID_CRYPTO);
volume_id_set_uuid(id, header->uuid, UUID_DCE_STRING);
id->type = "crypto_LUKS";
return 0;
}
int FAST_FUNC volume_id_probe_lvm1(struct volume_id *id, uint64_t off)
{
struct lvm1_super_block *lvm;
dbg("probing at offset 0x%llx", (unsigned long long) off);
lvm = volume_id_get_buffer(id, off + LVM1_SB_OFF, 0x800);
if (lvm == NULL)
return -1;
if (lvm->id[0] != 'H' || lvm->id[1] != 'M')
return -1;
// volume_id_set_usage(id, VOLUME_ID_RAID);
// id->type = "LVM1_member";
return 0;
}
int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id, uint64_t off)
{
struct hpfs_super *hs;
dbg("probing at offset 0x%llx", (unsigned long long) off);
hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200);
if (hs == NULL)
return -1;
if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) {
// sprintf(id->type_version, "%u", hs->version);
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// id->type = "hpfs";
return 0;
}
return -1;
}
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;
}
