*
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
*
- * The superblock structs are taken from the libblkid living inside
- * the e2fsprogs. This is a simple straightforward implementation for
- * reading the label strings of only the most common filesystems.
- * If you need a full featured library with attribute caching, support for
- * much more partition/media types or non-root data access, you may have
- * a look at:
- * http://e2fsprogs.sourceforge.net.
+ * The superblock structs are taken from the linux kernel sources
+ * and the libblkid living inside the e2fsprogs. This is a simple
+ * straightforward implementation for reading the label strings of the
+ * most common filesystems.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation version 2 of the License.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <stdlib.h>
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <stdio.h>
-#include <string.h>
+#include <stdlib.h>
#include <unistd.h>
+#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <asm/types.h>
#include "volume_id.h"
+#include "volume_id_logging.h"
+#define bswap16(x) (__u16)((((__u16)(x) & 0x00ffu) << 8) | \
+ (((__u16)(x) & 0xff00u) >> 8))
#define bswap32(x) (__u32)((((__u32)(x) & 0xff000000u) >> 24) | \
(((__u32)(x) & 0x00ff0000u) >> 8) | \
(((__u32)(x) & 0x0000ff00u) << 8) | \
(((__u32)(x) & 0x000000ffu) << 24))
-#if (__BYTE_ORDER == __LITTLE_ENDIAN)
-#define cpu_to_le32(x) (x)
+#define bswap64(x) (__u64)((((__u64)(x) & 0xff00000000000000ull) >> 56) | \
+ (((__u64)(x) & 0x00ff000000000000ull) >> 40) | \
+ (((__u64)(x) & 0x0000ff0000000000ull) >> 24) | \
+ (((__u64)(x) & 0x000000ff00000000ull) >> 8) | \
+ (((__u64)(x) & 0x00000000ff000000ull) << 8) | \
+ (((__u64)(x) & 0x0000000000ff0000ull) << 24) | \
+ (((__u64)(x) & 0x000000000000ff00ull) << 40) | \
+ (((__u64)(x) & 0x00000000000000ffull) << 56))
+
+#if (__BYTE_ORDER == __LITTLE_ENDIAN)
+#define le16_to_cpu(x) (x)
+#define le32_to_cpu(x) (x)
+#define le64_to_cpu(x) (x)
+#define be16_to_cpu(x) bswap16(x)
+#define be32_to_cpu(x) bswap32(x)
#elif (__BYTE_ORDER == __BIG_ENDIAN)
-#define cpu_to_le32(x) bswap32(x)
+#define le16_to_cpu(x) bswap16(x)
+#define le32_to_cpu(x) bswap32(x)
+#define le64_to_cpu(x) bswap64(x)
+#define be16_to_cpu(x) (x)
+#define be32_to_cpu(x) (x)
#endif
-#define VOLUME_ID_BUFFER_SIZE 0x11000 /* reiser offset is 64k */
+/* size of superblock buffer, reiserfs block is at 64k */
+#define SB_BUFFER_SIZE 0x11000
+/* size of seek buffer 4k */
+#define SEEK_BUFFER_SIZE 0x10000
-static void set_label(struct volume_id *id, char *buf, int count)
+static void set_label_raw(struct volume_id *id,
+ const __u8 *buf, unsigned int count)
{
- int i;
+ memcpy(id->label_raw, buf, count);
+ id->label_raw_len = count;
+}
- memcpy(id->label, buf, count);
+static void set_label_string(struct volume_id *id,
+ const __u8 *buf, unsigned int count)
+{
+ unsigned int i;
- memcpy(id->label_string, buf, count);
+ memcpy(id->label, buf, count);
/* remove trailing whitespace */
- i = strlen(id->label_string);
+ i = strnlen(id->label, count);
while (i--) {
- if (! isspace(id->label_string[i]))
+ if (! isspace(id->label[i]))
break;
}
- id->label_string[i+1] = '\0';
+ id->label[i+1] = '\0';
}
-static void set_uuid(struct volume_id *id, unsigned char *buf, int count)
+#define LE 0
+#define BE 1
+static void set_label_unicode16(struct volume_id *id,
+ const __u8 *buf,
+ unsigned int endianess,
+ unsigned int count)
{
- int i;
+ unsigned int i, j;
+ __u16 c;
+
+ j = 0;
+ for (i = 0; i + 2 <= count; i += 2) {
+ if (endianess == LE)
+ c = (buf[i+1] << 8) | buf[i];
+ else
+ c = (buf[i] << 8) | buf[i+1];
+ if (c == 0) {
+ id->label[j] = '\0';
+ break;
+ } else if (c < 0x80) {
+ id->label[j++] = (__u8) c;
+ } else if (c < 0x800) {
+ id->label[j++] = (__u8) (0xc0 | (c >> 6));
+ id->label[j++] = (__u8) (0x80 | (c & 0x3f));
+ } else {
+ id->label[j++] = (__u8) (0xe0 | (c >> 12));
+ id->label[j++] = (__u8) (0x80 | ((c >> 6) & 0x3f));
+ id->label[j++] = (__u8) (0x80 | (c & 0x3f));
+ }
+ }
+}
+
+enum uuid_format {
+ UUID_DCE,
+ UUID_DOS,
+ UUID_NTFS,
+ UUID_HFS,
+};
- memcpy(id->uuid, buf, count);
+static void set_uuid(struct volume_id *id, const __u8 *buf, enum uuid_format format)
+{
+ unsigned int i;
+ unsigned int count = 0;
+
+ switch(format) {
+ case UUID_DOS:
+ count = 4;
+ break;
+ case UUID_NTFS:
+ case UUID_HFS:
+ count = 8;
+ break;
+ case UUID_DCE:
+ count = 16;
+ }
+ memcpy(id->uuid_raw, buf, count);
- /* create string if uuid is set */
- for (i = 0; i < count; i++)
+ /* if set, create string in the same format, the native platform uses */
+ for (i = 0; i < count; i++)
if (buf[i] != 0)
goto set;
return;
set:
- switch(count) {
- case 4:
- sprintf(id->uuid_string, "%02X%02X-%02X%02X",
+ switch(format) {
+ case UUID_DOS:
+ sprintf(id->uuid, "%02X%02X-%02X%02X",
+ buf[3], buf[2], buf[1], buf[0]);
+ break;
+ case UUID_NTFS:
+ sprintf(id->uuid,"%02X%02X%02X%02X%02X%02X%02X%02X",
+ buf[7], buf[6], buf[5], buf[4],
buf[3], buf[2], buf[1], buf[0]);
break;
- case 16:
- sprintf(id->uuid_string,
+ case UUID_HFS:
+ sprintf(id->uuid,"%02X%02X%02X%02X%02X%02X%02X%02X",
+ buf[0], buf[1], buf[2], buf[3],
+ buf[4], buf[5], buf[6], buf[7]);
+ break;
+ case UUID_DCE:
+ sprintf(id->uuid,
"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
buf[0], buf[1], buf[2], buf[3],
buf[4], buf[5],
}
}
-static int open_superblock(struct volume_id *id)
+static __u8 *get_buffer(struct volume_id *id, __u64 off, unsigned int len)
{
- /* get buffer to read the first block */
- if (id->buf == NULL) {
- id->buf = malloc(VOLUME_ID_BUFFER_SIZE);
- if (id->buf == NULL)
- return -1;
+ unsigned int buf_len;
+
+ dbg("get buffer off 0x%llx, len 0x%x", off, len);
+ /* check if requested area fits in superblock buffer */
+ if (off + len <= SB_BUFFER_SIZE) {
+ if (id->sbbuf == NULL) {
+ id->sbbuf = malloc(SB_BUFFER_SIZE);
+ if (id->sbbuf == NULL)
+ return NULL;
+ }
+
+ /* check if we need to read */
+ if ((off + len) > id->sbbuf_len) {
+ dbg("read sbbuf len:0x%llx", off + len);
+ lseek(id->fd, 0, SEEK_SET);
+ buf_len = read(id->fd, id->sbbuf, off + len);
+ dbg("got 0x%x (%i) bytes", buf_len, buf_len);
+ id->sbbuf_len = buf_len;
+ if (buf_len < off + len)
+ return NULL;
+ }
+
+ return &(id->sbbuf[off]);
+ } else {
+ if (len > SEEK_BUFFER_SIZE) {
+ dbg("seek buffer too small %d", SEEK_BUFFER_SIZE);
+ return NULL;
+ }
+
+ /* get seek buffer */
+ if (id->seekbuf == NULL) {
+ id->seekbuf = malloc(SEEK_BUFFER_SIZE);
+ if (id->seekbuf == NULL)
+ return NULL;
+ }
+
+ /* check if we need to read */
+ if ((off < id->seekbuf_off) || ((off + len) > (id->seekbuf_off + id->seekbuf_len))) {
+ dbg("read seekbuf off:0x%llx len:0x%x", off, len);
+ if (lseek(id->fd, off, SEEK_SET) == -1)
+ return NULL;
+ buf_len = read(id->fd, id->seekbuf, len);
+ dbg("got 0x%x (%i) bytes", buf_len, buf_len);
+ id->seekbuf_off = off;
+ id->seekbuf_len = buf_len;
+ if (buf_len < len) {
+ dbg("requested 0x%x bytes, got only 0x%x bytes", len, buf_len);
+ return NULL;
+ }
+ }
+
+ return &(id->seekbuf[off - id->seekbuf_off]);
+ }
+}
+
+static void free_buffer(struct volume_id *id)
+{
+ if (id->sbbuf != NULL) {
+ free(id->sbbuf);
+ id->sbbuf = NULL;
+ id->sbbuf_len = 0;
+ }
+ if (id->seekbuf != NULL) {
+ free(id->seekbuf);
+ id->seekbuf = NULL;
+ id->seekbuf_len = 0;
}
+}
+
+#define HPT37X_CONFIG_OFF 0x1200
+#define HPT37X_MAGIC_OK 0x5a7816f0
+#define HPT37X_MAGIC_BAD 0x5a7816fd
+static int probe_highpoint_ataraid(struct volume_id *id, __u64 off)
+{
+ struct hpt37x {
+ __u8 filler1[32];
+ __u32 magic;
+ __u32 magic_0;
+ __u32 magic_1;
+ } __attribute__((packed)) *hpt;
+
+ const __u8 *buf;
- /* try to read the first 64k, but at least the first block */
- memset(id->buf, 0x00, VOLUME_ID_BUFFER_SIZE);
- lseek(id->fd, 0, SEEK_SET);
- if (read(id->fd, id->buf, VOLUME_ID_BUFFER_SIZE) < 0x200)
+ buf = get_buffer(id, off + HPT37X_CONFIG_OFF, 0x200);
+ if (buf == NULL)
return -1;
+ hpt = (struct hpt37x *) buf;
+
+ if (hpt->magic != HPT37X_MAGIC_OK && hpt->magic != HPT37X_MAGIC_BAD)
+ return -1;
+
+ id->usage_id = VOLUME_ID_RAID;
+ id->type_id = VOLUME_ID_HPTRAID;
+ id->type = "hpt_ataraid_member";
+
return 0;
}
-static void close_superblock(struct volume_id *id)
+#define LVM1_SB_OFF 0x400
+#define LVM1_MAGIC "HM"
+static int probe_lvm1(struct volume_id *id, __u64 off)
{
- if (id->buf != NULL) {
- free(id->buf);
- id->buf = NULL;
+ struct lvm2_super_block {
+ __u8 id[2];
+ } __attribute__((packed)) *lvm;
+
+ const __u8 *buf;
+
+ buf = get_buffer(id, off + LVM1_SB_OFF, 0x800);
+ if (buf == NULL)
+ return -1;
+
+ lvm = (struct lvm2_super_block *) buf;
+
+ if (strncmp(lvm->id, LVM1_MAGIC, 2) != 0)
+ return -1;
+
+ id->usage_id = VOLUME_ID_RAID;
+ id->type_id = VOLUME_ID_LVM1;
+ id->type = "LVM1_member";
+
+ return 0;
+}
+
+#define LVM2_LABEL_ID "LABELONE"
+#define LVM2LABEL_SCAN_SECTORS 4
+static int probe_lvm2(struct volume_id *id, __u64 off)
+{
+ struct lvm2_super_block {
+ __u8 id[8];
+ __u64 sector_xl;
+ __u32 crc_xl;
+ __u32 offset_xl;
+ __u8 type[8];
+ } __attribute__((packed)) *lvm;
+
+ const __u8 *buf;
+ unsigned int soff;
+
+ buf = 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 (strncmp(lvm->id, LVM2_LABEL_ID, 8) == 0)
+ goto found;
}
+
+ return -1;
+
+found:
+ strncpy(id->type_version, lvm->type, 8);
+ id->usage_id = VOLUME_ID_RAID;
+ id->type_id = VOLUME_ID_LVM2;
+ id->type = "LVM2_member";
+
+ return 0;
+}
+
+#define MD_RESERVED_BYTES 0x10000
+#define MD_MAGIC 0xa92b4efc
+static int probe_linux_raid(struct volume_id *id, __u64 off, __u64 size)
+{
+ struct mdp_super_block {
+ __u32 md_magic;
+ __u32 major_version;
+ __u32 minor_version;
+ __u32 patch_version;
+ __u32 gvalid_words;
+ __u32 set_uuid0;
+ __u32 ctime;
+ __u32 level;
+ __u32 size;
+ __u32 nr_disks;
+ __u32 raid_disks;
+ __u32 md_minor;
+ __u32 not_persistent;
+ __u32 set_uuid1;
+ __u32 set_uuid2;
+ __u32 set_uuid3;
+ } __attribute__((packed)) *mdp;
+
+ const __u8 *buf;
+ __u64 sboff;
+ __u8 uuid[16];
+
+ if (size < 0x10000)
+ return -1;
+
+ sboff = (size & ~(MD_RESERVED_BYTES - 1)) - MD_RESERVED_BYTES;
+ buf = get_buffer(id, off + sboff, 0x800);
+ if (buf == NULL)
+ return -1;
+
+ mdp = (struct mdp_super_block *) buf;
+
+ if (le32_to_cpu(mdp->md_magic) != MD_MAGIC)
+ return -1;
+
+ memcpy(uuid, &mdp->set_uuid0, 4);
+ memcpy(&uuid[4], &mdp->set_uuid1, 12);
+ set_uuid(id, uuid, UUID_DCE);
+
+ snprintf(id->type_version, VOLUME_ID_FORMAT_SIZE-1, "%u.%u.%u",
+ le32_to_cpu(mdp->major_version),
+ le32_to_cpu(mdp->minor_version),
+ le32_to_cpu(mdp->patch_version));
+
+ dbg("found raid signature");
+ id->usage_id = VOLUME_ID_RAID;
+ id->type = "linux_raid_member";
+
+ return 0;
+}
+
+#define MSDOS_MAGIC "\x55\xaa"
+#define MSDOS_PARTTABLE_OFFSET 0x1be
+#define MSDOS_SIG_OFF 0x1fe
+#define BSIZE 0x200
+#define DOS_EXTENDED_PARTITION 0x05
+#define LINUX_EXTENDED_PARTITION 0x85
+#define WIN98_EXTENDED_PARTITION 0x0f
+#define LINUX_RAID_PARTITION 0xfd
+#define is_extended(type) \
+ (type == DOS_EXTENDED_PARTITION || \
+ type == WIN98_EXTENDED_PARTITION || \
+ type == LINUX_EXTENDED_PARTITION)
+#define is_raid(type) \
+ (type == LINUX_RAID_PARTITION)
+static int probe_msdos_part_table(struct volume_id *id, __u64 off)
+{
+ struct msdos_partition_entry {
+ __u8 boot_ind;
+ __u8 head;
+ __u8 sector;
+ __u8 cyl;
+ __u8 sys_ind;
+ __u8 end_head;
+ __u8 end_sector;
+ __u8 end_cyl;
+ __u32 start_sect;
+ __u32 nr_sects;
+ } __attribute__((packed)) *part;
+
+ const __u8 *buf;
+ int i;
+ __u64 poff;
+ __u64 plen;
+ __u64 extended = 0;
+ __u64 current;
+ __u64 next;
+ int limit;
+ int empty = 1;
+ struct volume_id_partition *p;
+
+ buf = get_buffer(id, off, 0x200);
+ if (buf == NULL)
+ return -1;
+
+ if (strncmp(&buf[MSDOS_SIG_OFF], MSDOS_MAGIC, 2) != 0)
+ return -1;
+
+ /* check flags on all entries for a valid partition table */
+ part = (struct msdos_partition_entry*) &buf[MSDOS_PARTTABLE_OFFSET];
+ for (i = 0; i < 4; i++) {
+ if (part[i].boot_ind != 0 &&
+ part[i].boot_ind != 0x80)
+ return -1;
+
+ if (le32_to_cpu(part[i].nr_sects) != 0)
+ empty = 0;
+ }
+ if (empty == 1)
+ return -1;
+
+ if (id->partitions != NULL)
+ free(id->partitions);
+ id->partitions = malloc(VOLUME_ID_PARTITIONS_MAX *
+ sizeof(struct volume_id_partition));
+ if (id->partitions == NULL)
+ return -1;
+ memset(id->partitions, 0x00,
+ VOLUME_ID_PARTITIONS_MAX * sizeof(struct volume_id_partition));
+
+ for (i = 0; i < 4; i++) {
+ poff = (__u64) le32_to_cpu(part[i].start_sect) * BSIZE;
+ plen = (__u64) le32_to_cpu(part[i].nr_sects) * BSIZE;
+
+ if (plen == 0)
+ continue;
+
+ p = &id->partitions[i];
+
+ p->partition_type_raw = part[i].sys_ind;
+
+ if (is_extended(part[i].sys_ind)) {
+ dbg("found extended partition at 0x%llx", poff);
+ p->usage_id = VOLUME_ID_PARTITIONTABLE;
+ p->type_id = VOLUME_ID_MSDOSEXTENDED;
+ p->type = "msdos_extended_partition";
+ if (extended == 0)
+ extended = off + poff;
+ } else {
+ dbg("found 0x%x data partition at 0x%llx, len 0x%llx",
+ part[i].sys_ind, poff, plen);
+
+ if (is_raid(part[i].sys_ind))
+ p->usage_id = VOLUME_ID_RAID;
+ else
+ p->usage_id = VOLUME_ID_UNPROBED;
+ }
+
+ p->off = off + poff;
+ p->len = plen;
+ id->partition_count = i+1;
+ }
+
+ next = extended;
+ current = extended;
+ limit = 50;
+
+ /* follow extended partition chain and add data partitions */
+ while (next != 0) {
+ if (limit-- == 0) {
+ dbg("extended chain limit reached");
+ break;
+ }
+
+ buf = get_buffer(id, current, 0x200);
+ if (buf == NULL)
+ break;
+
+ part = (struct msdos_partition_entry*) &buf[MSDOS_PARTTABLE_OFFSET];
+
+ if (strncmp(&buf[MSDOS_SIG_OFF], MSDOS_MAGIC, 2) != 0)
+ break;
+
+ next = 0;
+
+ for (i = 0; i < 4; i++) {
+ poff = (__u64) le32_to_cpu(part[i].start_sect) * BSIZE;
+ plen = (__u64) le32_to_cpu(part[i].nr_sects) * BSIZE;
+
+ if (plen == 0)
+ continue;
+
+ if (is_extended(part[i].sys_ind)) {
+ dbg("found extended partition at 0x%llx", poff);
+ if (next == 0)
+ next = extended + poff;
+ } else {
+ dbg("found 0x%x data partition at 0x%llx, len 0x%llx",
+ part[i].sys_ind, poff, plen);
+
+ /* we always start at the 5th entry */
+ while (id->partition_count < 4)
+ id->partitions[id->partition_count++].usage_id =
+ VOLUME_ID_UNUSED;
+
+ p = &id->partitions[id->partition_count];
+
+ if (is_raid(part[i].sys_ind))
+ p->usage_id = VOLUME_ID_RAID;
+ else
+ p->usage_id = VOLUME_ID_UNPROBED;
+
+ p->off = current + poff;
+ p->len = plen;
+ id->partition_count++;
+
+ p->partition_type_raw = part[i].sys_ind;
+
+ if (id->partition_count >= VOLUME_ID_PARTITIONS_MAX) {
+ dbg("too many partitions");
+ next = 0;
+ }
+ }
+ }
+
+ current = next;
+ }
+
+ id->usage_id = VOLUME_ID_PARTITIONTABLE;
+ id->type_id = VOLUME_ID_MSDOSPARTTABLE;
+ id->type = "msdos_partition_table";
+
+ return 0;
}
#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004
#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008
#define EXT_SUPERBLOCK_OFFSET 0x400
-static int probe_ext(struct volume_id *id)
+static int probe_ext(struct volume_id *id, __u64 off)
{
struct ext2_super_block {
- __u32 s_inodes_count;
- __u32 s_blocks_count;
- __u32 s_r_blocks_count;
- __u32 s_free_blocks_count;
- __u32 s_free_inodes_count;
- __u32 s_first_data_block;
- __u32 s_log_block_size;
- __u32 s_dummy3[7];
- unsigned char s_magic[2];
- __u16 s_state;
- __u32 s_dummy5[8];
- __u32 s_feature_compat;
- __u32 s_feature_incompat;
- __u32 s_feature_ro_compat;
- unsigned char s_uuid[16];
- char s_volume_name[16];
- } *es;
-
- es = (struct ext2_super_block *) (id->buf + EXT_SUPERBLOCK_OFFSET);
-
- if (es->s_magic[0] != 0123 ||
- es->s_magic[1] != 0357)
- return -1;
-
- set_label(id, es->s_volume_name, 16);
- set_uuid(id, es->s_uuid, 16);
-
- if ((cpu_to_le32(es->s_feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0) {
- id->fs_type = EXT3;
- id->fs_name = "ext3";
+ __u32 inodes_count;
+ __u32 blocks_count;
+ __u32 r_blocks_count;
+ __u32 free_blocks_count;
+ __u32 free_inodes_count;
+ __u32 first_data_block;
+ __u32 log_block_size;
+ __u32 dummy3[7];
+ __u8 magic[2];
+ __u16 state;
+ __u32 dummy5[8];
+ __u32 feature_compat;
+ __u32 feature_incompat;
+ __u32 feature_ro_compat;
+ __u8 uuid[16];
+ __u8 volume_name[16];
+ } __attribute__((__packed__)) *es;
+
+ es = (struct ext2_super_block *)
+ get_buffer(id, off + EXT_SUPERBLOCK_OFFSET, 0x200);
+ if (es == NULL)
+ return -1;
+
+ if (es->magic[0] != 0123 ||
+ es->magic[1] != 0357)
+ return -1;
+
+ set_label_raw(id, es->volume_name, 16);
+ set_label_string(id, es->volume_name, 16);
+ set_uuid(id, es->uuid, UUID_DCE);
+
+ if ((le32_to_cpu(es->feature_compat) &
+ EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0) {
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_EXT3;
+ id->type = "ext3";
} else {
- id->fs_type = EXT2;
- id->fs_name = "ext2";
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_EXT2;
+ id->type = "ext2";
}
return 0;
}
-#define REISER1_SUPERBLOCK_OFFSET 0x2000
-#define REISER_SUPERBLOCK_OFFSET 0x10000
-static int probe_reiser(struct volume_id *id)
+#define REISERFS1_SUPERBLOCK_OFFSET 0x2000
+#define REISERFS_SUPERBLOCK_OFFSET 0x10000
+static int probe_reiserfs(struct volume_id *id, __u64 off)
{
- struct reiser_super_block {
- __u32 rs_blocks_count;
- __u32 rs_free_blocks;
- __u32 rs_root_block;
- __u32 rs_journal_block;
- __u32 rs_journal_dev;
- __u32 rs_orig_journal_size;
- __u32 rs_dummy2[5];
- __u16 rs_blocksize;
- __u16 rs_dummy3[3];
- unsigned char rs_magic[12];
- __u32 rs_dummy4[5];
- unsigned char rs_uuid[16];
- char rs_label[16];
- } *rs;
-
- rs = (struct reiser_super_block *) &(id->buf[REISER1_SUPERBLOCK_OFFSET]);
-
- if (strncmp(rs->rs_magic, "ReIsErFs", 8) == 0)
- goto found;
+ struct reiserfs_super_block {
+ __u32 blocks_count;
+ __u32 free_blocks;
+ __u32 root_block;
+ __u32 journal_block;
+ __u32 journal_dev;
+ __u32 orig_journal_size;
+ __u32 dummy2[5];
+ __u16 blocksize;
+ __u16 dummy3[3];
+ __u8 magic[12];
+ __u32 dummy4[5];
+ __u8 uuid[16];
+ __u8 label[16];
+ } __attribute__((__packed__)) *rs;
+
+ rs = (struct reiserfs_super_block *)
+ get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200);
+ if (rs == NULL)
+ return -1;
- rs = (struct reiser_super_block *) &(id->buf[REISER_SUPERBLOCK_OFFSET]);
+ if (strncmp(rs->magic, "ReIsEr2Fs", 9) == 0) {
+ strcpy(id->type_version, "3.6");
+ goto found;
+ }
- if (strncmp(rs->rs_magic, "ReIsEr2Fs", 9) == 0)
+ if (strncmp(rs->magic, "ReIsEr3Fs", 9) == 0) {
+ strcpy(id->type_version, "JR");
goto found;
- if (strncmp(rs->rs_magic, "ReIsEr3Fs", 9) == 0)
+ }
+
+ rs = (struct reiserfs_super_block *)
+ get_buffer(id, off + REISERFS1_SUPERBLOCK_OFFSET, 0x200);
+ if (rs == NULL)
+ return -1;
+
+ if (strncmp(rs->magic, "ReIsErFs", 8) == 0) {
+ strcpy(id->type_version, "3.5");
goto found;
+ }
return -1;
found:
- set_label(id, rs->rs_label, 16);
- set_uuid(id, rs->rs_uuid, 16);
+ set_label_raw(id, rs->label, 16);
+ set_label_string(id, rs->label, 16);
+ set_uuid(id, rs->uuid, UUID_DCE);
- id->fs_type = REISER;
- id->fs_name = "reiser";
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_REISERFS;
+ id->type = "reiserfs";
return 0;
}
-static int probe_xfs(struct volume_id *id)
+static int probe_xfs(struct volume_id *id, __u64 off)
{
struct xfs_super_block {
- unsigned char xs_magic[4];
- __u32 xs_blocksize;
- __u64 xs_dblocks;
- __u64 xs_rblocks;
- __u32 xs_dummy1[2];
- unsigned char xs_uuid[16];
- __u32 xs_dummy2[15];
- char xs_fname[12];
- __u32 xs_dummy3[2];
- __u64 xs_icount;
- __u64 xs_ifree;
- __u64 xs_fdblocks;
- } *xs;
-
- xs = (struct xfs_super_block *) id->buf;
+ __u8 magic[4];
+ __u32 blocksize;
+ __u64 dblocks;
+ __u64 rblocks;
+ __u32 dummy1[2];
+ __u8 uuid[16];
+ __u32 dummy2[15];
+ __u8 fname[12];
+ __u32 dummy3[2];
+ __u64 icount;
+ __u64 ifree;
+ __u64 fdblocks;
+ } __attribute__((__packed__)) *xs;
+
+ xs = (struct xfs_super_block *) get_buffer(id, off, 0x200);
+ if (xs == NULL)
+ return -1;
- if (strncmp(xs->xs_magic, "XFSB", 4) != 0)
+ if (strncmp(xs->magic, "XFSB", 4) != 0)
return -1;
- set_label(id, xs->xs_fname, 12);
- set_uuid(id, xs->xs_uuid, 16);
+ set_label_raw(id, xs->fname, 12);
+ set_label_string(id, xs->fname, 12);
+ set_uuid(id, xs->uuid, UUID_DCE);
- id->fs_type = XFS;
- id->fs_name = "xfs";
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_XFS;
+ id->type = "xfs";
return 0;
}
#define JFS_SUPERBLOCK_OFFSET 0x8000
-static int probe_jfs(struct volume_id *id)
+static int probe_jfs(struct volume_id *id, __u64 off)
{
struct jfs_super_block {
- unsigned char js_magic[4];
- __u32 js_version;
- __u64 js_size;
- __u32 js_bsize;
- __u32 js_dummy1;
- __u32 js_pbsize;
- __u32 js_dummy2[27];
- unsigned char js_uuid[16];
- unsigned char js_label[16];
- unsigned char js_loguuid[16];
- } *js;
-
- js = (struct jfs_super_block *) &(id->buf[JFS_SUPERBLOCK_OFFSET]);
+ __u8 magic[4];
+ __u32 version;
+ __u64 size;
+ __u32 bsize;
+ __u32 dummy1;
+ __u32 pbsize;
+ __u32 dummy2[27];
+ __u8 uuid[16];
+ __u8 label[16];
+ __u8 loguuid[16];
+ } __attribute__((__packed__)) *js;
+
+ js = (struct jfs_super_block *)
+ get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200);
+ if (js == NULL)
+ return -1;
- if (strncmp(js->js_magic, "JFS1", 4) != 0)
+ if (strncmp(js->magic, "JFS1", 4) != 0)
return -1;
- set_label(id, js->js_label, 16);
- set_uuid(id, js->js_uuid, 16);
+ set_label_raw(id, js->label, 16);
+ set_label_string(id, js->label, 16);
+ set_uuid(id, js->uuid, UUID_DCE);
- id->fs_type = JFS;
- id->fs_name = "jfs";
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_JFS;
+ id->type = "jfs";
return 0;
}
-static int probe_vfat(struct volume_id *id)
+#define FAT12_MAX 0xff5
+#define FAT16_MAX 0xfff5
+#define FAT_ATTR_VOLUME_ID 0x08
+#define FAT_ATTR_DIR 0x10
+#define FAT_ENTRY_FREE 0xe5
+static int probe_vfat(struct volume_id *id, __u64 off)
{
struct vfat_super_block {
- unsigned char vs_ignored[3];
- unsigned char vs_sysid[8];
- unsigned char vs_sector_size[2];
- __u8 vs_cluster_size;
- __u16 vs_reserved;
- __u8 vs_fats;
- unsigned char vs_dir_entries[2];
- unsigned char vs_sectors[2];
- unsigned char vs_media;
- __u16 vs_fat_length;
- __u16 vs_secs_track;
- __u16 vs_heads;
- __u32 vs_hidden;
- __u32 vs_total_sect;
- __u32 vs_fat32_length;
- __u16 vs_flags;
- __u8 vs_version[2];
- __u32 vs_root_cluster;
- __u16 vs_insfo_sector;
- __u16 vs_backup_boot;
- __u16 vs_reserved2[6];
- unsigned char vs_unknown[3];
- unsigned char vs_serno[4];
- char vs_label[11];
- unsigned char vs_magic[8];
- unsigned char vs_dummy2[164];
- unsigned char vs_pmagic[2];
- } *vs;
-
- vs = (struct vfat_super_block *) id->buf;
-
- if (strncmp(vs->vs_magic, "MSWIN", 5) == 0)
+ __u8 boot_jump[3];
+ __u8 sysid[8];
+ __u16 sector_size;
+ __u8 sectors_per_cluster;
+ __u16 reserved;
+ __u8 fats;
+ __u16 dir_entries;
+ __u16 sectors;
+ __u8 media;
+ __u16 fat_length;
+ __u16 secs_track;
+ __u16 heads;
+ __u32 hidden;
+ __u32 total_sect;
+ union {
+ struct fat_super_block {
+ __u8 unknown[3];
+ __u8 serno[4];
+ __u8 label[11];
+ __u8 magic[8];
+ __u8 dummy2[192];
+ __u8 pmagic[2];
+ } __attribute__((__packed__)) fat;
+ struct fat32_super_block {
+ __u32 fat32_length;
+ __u16 flags;
+ __u8 version[2];
+ __u32 root_cluster;
+ __u16 insfo_sector;
+ __u16 backup_boot;
+ __u16 reserved2[6];
+ __u8 unknown[3];
+ __u8 serno[4];
+ __u8 label[11];
+ __u8 magic[8];
+ __u8 dummy2[164];
+ __u8 pmagic[2];
+ } __attribute__((__packed__)) fat32;
+ } __attribute__((__packed__)) type;
+ } __attribute__((__packed__)) *vs;
+
+ struct vfat_dir_entry {
+ __u8 name[11];
+ __u8 attr;
+ __u16 time_creat;
+ __u16 date_creat;
+ __u16 time_acc;
+ __u16 date_acc;
+ __u16 cluster_high;
+ __u16 time_write;
+ __u16 date_write;
+ __u16 cluster_low;
+ __u32 size;
+ } __attribute__((__packed__)) *dir;
+
+ __u16 sector_size;
+ __u16 dir_entries;
+ __u32 sect_count;
+ __u16 reserved;
+ __u32 fat_size;
+ __u32 root_cluster;
+ __u32 dir_size;
+ __u32 cluster_count;
+ __u32 fat_length;
+ __u64 root_start;
+ __u32 start_data_sect;
+ __u16 root_dir_entries;
+ __u8 *buf;
+ __u32 buf_size;
+ __u8 *label = NULL;
+ __u32 next;
+ int maxloop;
+ int i;
+
+ vs = (struct vfat_super_block *) get_buffer(id, off, 0x200);
+ if (vs == NULL)
+ return -1;
+
+ /* believe only that's fat, don't trust the version
+ * the cluster_count will tell us
+ */
+ if (strncmp(vs->type.fat32.magic, "MSWIN", 5) == 0)
+ goto valid;
+
+ if (strncmp(vs->type.fat32.magic, "FAT32 ", 8) == 0)
+ goto valid;
+
+ if (strncmp(vs->type.fat.magic, "FAT16 ", 8) == 0)
+ goto valid;
+
+ if (strncmp(vs->type.fat.magic, "MSDOS", 5) == 0)
+ goto valid;
+
+ if (strncmp(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 = le16_to_cpu(vs->sector_size);
+ if (sector_size != 0x200 && sector_size != 0x400 &&
+ sector_size != 0x800 && sector_size != 0x1000)
+ return -1;
+
+ dbg("sector_size 0x%x", sector_size);
+ dbg("sectors_per_cluster 0x%x", vs->sectors_per_cluster);
+
+ dir_entries = le16_to_cpu(vs->dir_entries);
+ reserved = le16_to_cpu(vs->reserved);
+ dbg("reserved 0x%x", reserved);
+
+ 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_length = le16_to_cpu(vs->fat_length);
+ if (fat_length == 0)
+ fat_length = le32_to_cpu(vs->type.fat32.fat32_length);
+ dbg("fat_length 0x%x", fat_length);
+
+ fat_size = fat_length * vs->fats;
+ dir_size = ((dir_entries * sizeof(struct vfat_dir_entry)) +
+ (sector_size-1)) / sector_size;
+ dbg("dir_size 0x%x", dir_size);
+
+ cluster_count = sect_count - (reserved + fat_size + dir_size);
+ 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;
+ }
+
+ /* the label may be an attribute in the root directory */
+ root_start = (reserved + fat_size) * sector_size;
+ dbg("root dir start 0x%llx", root_start);
+ root_dir_entries = le16_to_cpu(vs->dir_entries);
+ dbg("expected entries 0x%x", root_dir_entries);
+
+ buf_size = root_dir_entries * sizeof(struct vfat_dir_entry);
+ buf = get_buffer(id, off + root_start, buf_size);
+ if (buf == NULL)
goto found;
- if (strncmp(vs->vs_magic, "FAT32 ", 8) == 0)
+
+ dir = (struct vfat_dir_entry*) buf;
+
+ for (i = 0; i <= root_dir_entries; i++) {
+ /* end marker */
+ if (dir[i].name[0] == 0x00) {
+ dbg("end of dir");
+ break;
+ }
+
+ /* empty entry */
+ if (dir[i].name[0] == FAT_ENTRY_FREE)
+ continue;
+
+ if ((dir[i].attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) == FAT_ATTR_VOLUME_ID) {
+ dbg("found ATTR_VOLUME_ID id in root dir");
+ label = dir[i].name;
+ break;
+ }
+
+ dbg("skip dir entry");
+ }
+
+ if (label != NULL && strncmp(label, "NO NAME ", 11) != 0) {
+ set_label_raw(id, label, 11);
+ set_label_string(id, label, 11);
+ } else if (strncmp(vs->type.fat.label, "NO NAME ", 11) != 0) {
+ set_label_raw(id, vs->type.fat.label, 11);
+ set_label_string(id, vs->type.fat.label, 11);
+ }
+ set_uuid(id, vs->type.fat.serno, UUID_DOS);
+ goto found;
+
+fat32:
+ /* FAT32 root dir is a cluster chain like any other directory */
+ buf_size = vs->sectors_per_cluster * sector_size;
+ root_cluster = le32_to_cpu(vs->type.fat32.root_cluster);
+ dbg("root dir cluster %u", root_cluster);
+ start_data_sect = reserved + fat_size;
+
+ next = root_cluster;
+ maxloop = 100;
+ while (--maxloop) {
+ __u32 next_sect_off;
+ __u64 next_off;
+ __u64 fat_entry_off;
+ int count;
+
+ dbg("next cluster %u", next);
+ next_sect_off = (next - 2) * vs->sectors_per_cluster;
+ next_off = (start_data_sect + next_sect_off) * sector_size;
+ dbg("cluster offset 0x%llx", next_off);
+
+ /* get cluster */
+ buf = get_buffer(id, off + next_off, buf_size);
+ if (buf == NULL)
+ goto found;
+
+ dir = (struct vfat_dir_entry*) buf;
+ count = buf_size / sizeof(struct vfat_dir_entry);
+ dbg("expected entries 0x%x", count);
+
+ for (i = 0; i <= count; i++) {
+ /* end marker */
+ if (dir[i].name[0] == 0x00) {
+ dbg("end of dir");
+ goto fat32_label;
+ }
+
+ /* empty entry */
+ if (dir[i].name[0] == FAT_ENTRY_FREE)
+ continue;
+
+ if ((dir[i].attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) == FAT_ATTR_VOLUME_ID) {
+ dbg("found ATTR_VOLUME_ID id in root dir");
+ label = dir[i].name;
+ goto fat32_label;
+ }
+
+ dbg("skip dir entry");
+ }
+
+ /* get FAT entry */
+ fat_entry_off = (reserved * sector_size) + (next * sizeof(__u32));
+ buf = get_buffer(id, off + fat_entry_off, buf_size);
+ if (buf == NULL)
+ goto found;
+
+ /* set next cluster */
+ next = le32_to_cpu(*((__u32 *) buf) & 0x0fffffff);
+ if (next == 0)
+ break;
+ }
+ if (maxloop == 0)
+ dbg("reached maximum follow count of root cluster chain, give up");
+
+fat32_label:
+ if (label != NULL && strncmp(label, "NO NAME ", 11) != 0) {
+ set_label_raw(id, label, 11);
+ set_label_string(id, label, 11);
+ } else if (strncmp(vs->type.fat32.label, "NO NAME ", 11) != 0) {
+ set_label_raw(id, vs->type.fat32.label, 11);
+ set_label_string(id, vs->type.fat32.label, 11);
+ }
+ set_uuid(id, vs->type.fat32.serno, UUID_DOS);
+
+found:
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_VFAT;
+ id->type = "vfat";
+
+ return 0;
+}
+
+#define UDF_VSD_OFFSET 0x8000
+static int probe_udf(struct volume_id *id, __u64 off)
+{
+ struct volume_descriptor {
+ struct descriptor_tag {
+ __u16 id;
+ __u16 version;
+ __u8 checksum;
+ __u8 reserved;
+ __u16 serial;
+ __u16 crc;
+ __u16 crc_len;
+ __u32 location;
+ } __attribute__((__packed__)) tag;
+ union {
+ struct anchor_descriptor {
+ __u32 length;
+ __u32 location;
+ } __attribute__((__packed__)) anchor;
+ struct primary_descriptor {
+ __u32 seq_num;
+ __u32 desc_num;
+ struct dstring {
+ __u8 clen;
+ __u8 c[31];
+ } __attribute__((__packed__)) ident;
+ } __attribute__((__packed__)) primary;
+ } __attribute__((__packed__)) type;
+ } __attribute__((__packed__)) *vd;
+
+ struct volume_structure_descriptor {
+ __u8 type;
+ __u8 id[5];
+ __u8 version;
+ } *vsd;
+
+ unsigned int bs;
+ unsigned int b;
+ unsigned int type;
+ unsigned int count;
+ unsigned int loc;
+ unsigned int clen;
+
+ vsd = (struct volume_structure_descriptor *)
+ get_buffer(id, off + UDF_VSD_OFFSET, 0x200);
+ if (vsd == NULL)
+ return -1;
+
+ if (strncmp(vsd->id, "NSR02", 5) == 0)
+ goto blocksize;
+ if (strncmp(vsd->id, "NSR03", 5) == 0)
+ goto blocksize;
+ if (strncmp(vsd->id, "BEA01", 5) == 0)
+ goto blocksize;
+ if (strncmp(vsd->id, "BOOT2", 5) == 0)
+ goto blocksize;
+ if (strncmp(vsd->id, "CD001", 5) == 0)
+ goto blocksize;
+ if (strncmp(vsd->id, "CDW02", 5) == 0)
+ goto blocksize;
+ if (strncmp(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 = (struct volume_structure_descriptor *)
+ 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 = (struct volume_structure_descriptor *)
+ 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 (strncmp(vsd->id, "NSR02", 5) == 0)
+ goto anchor;
+ if (strncmp(vsd->id, "NSR03", 5) == 0)
+ goto anchor;
+ }
+ return -1;
+
+anchor:
+ /* read anchor volume descriptor */
+ vd = (struct volume_descriptor *)
+ 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 = (struct volume_descriptor *)
+ 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:
+ 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)
+ set_label_string(id, vd->type.primary.ident.c, 31);
+ else if (clen == 16)
+ set_label_unicode16(id, vd->type.primary.ident.c, BE,31);
+
+found:
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_UDF;
+ id->type = "udf";
+
+ return 0;
+}
+
+#define ISO_SUPERBLOCK_OFFSET 0x8000
+#define ISO_SECTOR_SIZE 0x800
+#define ISO_VD_OFFSET (ISO_SUPERBLOCK_OFFSET + ISO_SECTOR_SIZE)
+#define ISO_VD_PRIMARY 0x1
+#define ISO_VD_SUPPLEMENTARY 0x2
+#define ISO_VD_END 0xff
+#define ISO_VD_MAX 16
+static int probe_iso9660(struct volume_id *id, __u64 off)
+{
+ union iso_super_block {
+ struct iso_header {
+ __u8 type;
+ __u8 id[5];
+ __u8 version;
+ __u8 unused1;
+ __u8 system_id[32];
+ __u8 volume_id[32];
+ } __attribute__((__packed__)) iso;
+ struct hs_header {
+ __u8 foo[8];
+ __u8 type;
+ __u8 id[4];
+ __u8 version;
+ } __attribute__((__packed__)) hs;
+ } __attribute__((__packed__)) *is;
+
+ is = (union iso_super_block *)
+ get_buffer(id, off + ISO_SUPERBLOCK_OFFSET, 0x200);
+ if (is == NULL)
+ return -1;
+
+ if (strncmp(is->iso.id, "CD001", 5) == 0) {
+ int vd_offset;
+ int i;
+ int found_svd;
+
+ found_svd = 0;
+ vd_offset = ISO_VD_OFFSET;
+ for (i = 0; i < ISO_VD_MAX; i++) {
+ is = (union iso_super_block *)
+ get_buffer (id, off + vd_offset, 0x200);
+ if (is == NULL || is->iso.type == ISO_VD_END)
+ break;
+ if (is->iso.type == ISO_VD_SUPPLEMENTARY) {
+ dbg("found ISO supplementary VD at offset 0x%llx", off + vd_offset);
+ found_svd = 1;
+ break;
+ }
+ vd_offset += ISO_SECTOR_SIZE;
+ }
+
+ if (!found_svd) {
+ is = (union iso_super_block *)
+ get_buffer(id, off + ISO_SUPERBLOCK_OFFSET, 0x200);
+ if (is == NULL)
+ return -1;
+ set_label_raw(id, is->iso.volume_id, 32);
+ set_label_string(id, is->iso.volume_id, 32);
+ } else {
+ set_label_raw(id, is->iso.volume_id, 32);
+ set_label_unicode16(id, is->iso.volume_id, BE, 32);
+ }
+ goto found;
+ }
+ if (strncmp(is->hs.id, "CDROM", 5) == 0)
goto found;
return -1;
found:
- memcpy(id->label, vs->vs_label, 11);
- memcpy(id->uuid, vs->vs_serno, 4);
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_ISO9660;
+ id->type = "iso9660";
+
+ return 0;
+}
+
+#define UFS_MAGIC 0x00011954
+#define UFS2_MAGIC 0x19540119
+#define UFS_MAGIC_FEA 0x00195612
+#define UFS_MAGIC_LFN 0x00095014
+
- id->fs_type = VFAT;
- id->fs_name = "vfat";
+static int probe_ufs(struct volume_id *id, __u64 off)
+{
+ struct ufs_super_block {
+ __u32 fs_link;
+ __u32 fs_rlink;
+ __u32 fs_sblkno;
+ __u32 fs_cblkno;
+ __u32 fs_iblkno;
+ __u32 fs_dblkno;
+ __u32 fs_cgoffset;
+ __u32 fs_cgmask;
+ __u32 fs_time;
+ __u32 fs_size;
+ __u32 fs_dsize;
+ __u32 fs_ncg;
+ __u32 fs_bsize;
+ __u32 fs_fsize;
+ __u32 fs_frag;
+ __u32 fs_minfree;
+ __u32 fs_rotdelay;
+ __u32 fs_rps;
+ __u32 fs_bmask;
+ __u32 fs_fmask;
+ __u32 fs_bshift;
+ __u32 fs_fshift;
+ __u32 fs_maxcontig;
+ __u32 fs_maxbpg;
+ __u32 fs_fragshift;
+ __u32 fs_fsbtodb;
+ __u32 fs_sbsize;
+ __u32 fs_csmask;
+ __u32 fs_csshift;
+ __u32 fs_nindir;
+ __u32 fs_inopb;
+ __u32 fs_nspf;
+ __u32 fs_optim;
+ __u32 fs_npsect_state;
+ __u32 fs_interleave;
+ __u32 fs_trackskew;
+ __u32 fs_id[2];
+ __u32 fs_csaddr;
+ __u32 fs_cssize;
+ __u32 fs_cgsize;
+ __u32 fs_ntrak;
+ __u32 fs_nsect;
+ __u32 fs_spc;
+ __u32 fs_ncyl;
+ __u32 fs_cpg;
+ __u32 fs_ipg;
+ __u32 fs_fpg;
+ struct ufs_csum {
+ __u32 cs_ndir;
+ __u32 cs_nbfree;
+ __u32 cs_nifree;
+ __u32 cs_nffree;
+ } __attribute__((__packed__)) fs_cstotal;
+ __s8 fs_fmod;
+ __s8 fs_clean;
+ __s8 fs_ronly;
+ __s8 fs_flags;
+ union {
+ struct {
+ __s8 fs_fsmnt[512];
+ __u32 fs_cgrotor;
+ __u32 fs_csp[31];
+ __u32 fs_maxcluster;
+ __u32 fs_cpc;
+ __u16 fs_opostbl[16][8];
+ } __attribute__((__packed__)) fs_u1;
+ struct {
+ __s8 fs_fsmnt[468];
+ __u8 fs_volname[32];
+ __u64 fs_swuid;
+ __s32 fs_pad;
+ __u32 fs_cgrotor;
+ __u32 fs_ocsp[28];
+ __u32 fs_contigdirs;
+ __u32 fs_csp;
+ __u32 fs_maxcluster;
+ __u32 fs_active;
+ __s32 fs_old_cpc;
+ __s32 fs_maxbsize;
+ __s64 fs_sparecon64[17];
+ __s64 fs_sblockloc;
+ struct ufs2_csum_total {
+ __u64 cs_ndir;
+ __u64 cs_nbfree;
+ __u64 cs_nifree;
+ __u64 cs_nffree;
+ __u64 cs_numclusters;
+ __u64 cs_spare[3];
+ } __attribute__((__packed__)) fs_cstotal;
+ struct ufs_timeval {
+ __s32 tv_sec;
+ __s32 tv_usec;
+ } __attribute__((__packed__)) fs_time;
+ __s64 fs_size;
+ __s64 fs_dsize;
+ __u64 fs_csaddr;
+ __s64 fs_pendingblocks;
+ __s32 fs_pendinginodes;
+ } __attribute__((__packed__)) fs_u2;
+ } fs_u11;
+ union {
+ struct {
+ __s32 fs_sparecon[53];
+ __s32 fs_reclaim;
+ __s32 fs_sparecon2[1];
+ __s32 fs_state;
+ __u32 fs_qbmask[2];
+ __u32 fs_qfmask[2];
+ } __attribute__((__packed__)) fs_sun;
+ struct {
+ __s32 fs_sparecon[53];
+ __s32 fs_reclaim;
+ __s32 fs_sparecon2[1];
+ __u32 fs_npsect;
+ __u32 fs_qbmask[2];
+ __u32 fs_qfmask[2];
+ } __attribute__((__packed__)) fs_sunx86;
+ struct {
+ __s32 fs_sparecon[50];
+ __s32 fs_contigsumsize;
+ __s32 fs_maxsymlinklen;
+ __s32 fs_inodefmt;
+ __u32 fs_maxfilesize[2];
+ __u32 fs_qbmask[2];
+ __u32 fs_qfmask[2];
+ __s32 fs_state;
+ } __attribute__((__packed__)) fs_44;
+ } fs_u2;
+ __s32 fs_postblformat;
+ __s32 fs_nrpos;
+ __s32 fs_postbloff;
+ __s32 fs_rotbloff;
+ __u32 fs_magic;
+ __u8 fs_space[1];
+ } __attribute__((__packed__)) *ufs;
+
+ __u32 magic;
+ int i;
+ int offsets[] = {0, 8, 64, 256, -1};
+
+ for (i = 0; offsets[i] >= 0; i++) {
+ ufs = (struct ufs_super_block *)
+ get_buffer(id, off + (offsets[i] * 0x400), 0x800);
+ if (ufs == NULL)
+ return -1;
+
+ dbg("offset 0x%x", 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)", 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)", magic);
+ goto found;
+ }
+ }
+ return -1;
+
+found:
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_UFS;
+ id->type = "ufs";
return 0;
}
-static int probe_msdos(struct volume_id *id)
+static int probe_mac_partition_map(struct volume_id *id, __u64 off)
{
- struct msdos_super_block {
- unsigned char ms_ignored[3];
- unsigned char ms_sysid[8];
- unsigned char ms_sector_size[2];
- __u8 ms_cluster_size;
- __u16 ms_reserved;
- __u8 ms_fats;
- unsigned char ms_dir_entries[2];
- unsigned char ms_sectors[2];
- unsigned char ms_media;
- __u16 ms_fat_length;
- __u16 ms_secs_track;
- __u16 ms_heads;
- __u32 ms_hidden;
- __u32 ms_total_sect;
- unsigned char ms_unknown[3];
- unsigned char ms_serno[4];
- char ms_label[11];
- unsigned char ms_magic[8];
- unsigned char ms_dummy2[192];
- unsigned char ms_pmagic[2];
- } *ms;
-
- ms = (struct msdos_super_block *) id->buf;
-
- if (strncmp(ms->ms_magic, "MSDOS", 5) == 0)
+ struct mac_driver_desc {
+ __u8 signature[2];
+ __u16 block_size;
+ __u32 block_count;
+ } __attribute__((__packed__)) *driver;
+
+ struct mac_partition {
+ __u8 signature[2];
+ __u16 res1;
+ __u32 map_count;
+ __u32 start_block;
+ __u32 block_count;
+ __u8 name[32];
+ __u8 type[32];
+ } __attribute__((__packed__)) *part;
+
+ const __u8 *buf;
+
+ buf = get_buffer(id, off, 0x200);
+ if (buf == NULL)
+ return -1;
+
+ part = (struct mac_partition *) buf;
+ if ((strncmp(part->signature, "PM", 2) == 0) &&
+ (strncmp(part->type, "Apple_partition_map", 19) == 0)) {
+ /* linux creates an own subdevice for the map
+ * just return the type if the drive header is missing */
+ id->usage_id = VOLUME_ID_PARTITIONTABLE;
+ id->type_id = VOLUME_ID_MACPARTMAP;
+ id->type = "mac_partition_map";
+ return 0;
+ }
+
+ driver = (struct mac_driver_desc *) buf;
+ if (strncmp(driver->signature, "ER", 2) == 0) {
+ /* we are on a main device, like a CD
+ * just try to probe the first partition from the map */
+ unsigned int bsize = be16_to_cpu(driver->block_size);
+ int part_count;
+ int i;
+
+ /* get first entry of partition table */
+ buf = get_buffer(id, off + bsize, 0x200);
+ if (buf == NULL)
+ return -1;
+
+ part = (struct mac_partition *) buf;
+ if (strncmp(part->signature, "PM", 2) != 0)
+ return -1;
+
+ part_count = be32_to_cpu(part->map_count);
+ dbg("expecting %d partition entries", part_count);
+
+ if (id->partitions != NULL)
+ free(id->partitions);
+ id->partitions =
+ malloc(part_count * sizeof(struct volume_id_partition));
+ if (id->partitions == NULL)
+ return -1;
+ memset(id->partitions, 0x00, sizeof(struct volume_id_partition));
+
+ id->partition_count = part_count;
+
+ for (i = 0; i < part_count; i++) {
+ __u64 poff;
+ __u64 plen;
+
+ buf = get_buffer(id, off + ((i+1) * bsize), 0x200);
+ if (buf == NULL)
+ return -1;
+
+ part = (struct mac_partition *) buf;
+ if (strncmp(part->signature, "PM", 2) != 0)
+ return -1;
+
+ poff = be32_to_cpu(part->start_block) * bsize;
+ plen = be32_to_cpu(part->block_count) * bsize;
+ dbg("found '%s' partition entry at 0x%llx, len 0x%llx",
+ part->type, poff, plen);
+
+ id->partitions[i].off = poff;
+ id->partitions[i].len = plen;
+
+ if (strncmp(part->type, "Apple_Free", 10) == 0) {
+ id->partitions[i].usage_id = VOLUME_ID_UNUSED;
+ } else if (strncmp(part->type, "Apple_partition_map", 19) == 0) {
+ id->partitions[i].usage_id = VOLUME_ID_PARTITIONTABLE;
+ id->partitions[i].type_id = VOLUME_ID_MACPARTMAP;
+ } else {
+ id->partitions[i].usage_id = VOLUME_ID_UNPROBED;
+ }
+ }
+ id->usage_id = VOLUME_ID_PARTITIONTABLE;
+ id->type_id = VOLUME_ID_MACPARTMAP;
+ id->type = "mac_partition_map";
+ return 0;
+ }
+
+ return -1;
+}
+
+#define HFS_SUPERBLOCK_OFFSET 0x400
+#define HFS_NODE_LEAF 0xff
+#define HFSPLUS_POR_CNID 1
+#define HFSPLUS_EXTENT_COUNT 8
+static int probe_hfs_hfsplus(struct volume_id *id, __u64 off)
+{
+ struct hfs_finder_info{
+ __u32 boot_folder;
+ __u32 start_app;
+ __u32 open_folder;
+ __u32 os9_folder;
+ __u32 reserved;
+ __u32 osx_folder;
+ __u8 id[8];
+ } __attribute__((__packed__));
+
+ struct hfs_mdb {
+ __u8 signature[2];
+ __u32 cr_date;
+ __u32 ls_Mod;
+ __u16 atrb;
+ __u16 nm_fls;
+ __u16 vbm_st;
+ __u16 alloc_ptr;
+ __u16 nm_al_blks;
+ __u32 al_blk_size;
+ __u32 clp_size;
+ __u16 al_bl_st;
+ __u32 nxt_cnid;
+ __u16 free_bks;
+ __u8 label_len;
+ __u8 label[27];
+ __u32 vol_bkup;
+ __u16 vol_seq_num;
+ __u32 wr_cnt;
+ __u32 xt_clump_size;
+ __u32 ct_clump_size;
+ __u16 num_root_dirs;
+ __u32 file_count;
+ __u32 dir_count;
+ struct hfs_finder_info finder_info;
+ __u8 embed_sig[2];
+ __u16 embed_startblock;
+ __u16 embed_blockcount;
+ } __attribute__((__packed__)) *hfs;
+
+ struct hfsplus_bnode_descriptor {
+ __u32 next;
+ __u32 prev;
+ __u8 type;
+ __u8 height;
+ __u16 num_recs;
+ __u16 reserved;
+ } __attribute__((__packed__));
+
+ struct hfsplus_bheader_record {
+ __u16 depth;
+ __u32 root;
+ __u32 leaf_count;
+ __u32 leaf_head;
+ __u32 leaf_tail;
+ __u16 node_size;
+ } __attribute__((__packed__));
+
+ struct hfsplus_catalog_key {
+ __u16 key_len;
+ __u32 parent_id;
+ __u16 unicode_len;
+ __u8 unicode[255 * 2];
+ } __attribute__((__packed__));
+
+ struct hfsplus_extent {
+ __u32 start_block;
+ __u32 block_count;
+ } __attribute__((__packed__));
+
+ struct hfsplus_fork {
+ __u64 total_size;
+ __u32 clump_size;
+ __u32 total_blocks;
+ struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
+ } __attribute__((__packed__));
+
+ struct hfsplus_vol_header {
+ __u8 signature[2];
+ __u16 version;
+ __u32 attributes;
+ __u32 last_mount_vers;
+ __u32 reserved;
+ __u32 create_date;
+ __u32 modify_date;
+ __u32 backup_date;
+ __u32 checked_date;
+ __u32 file_count;
+ __u32 folder_count;
+ __u32 blocksize;
+ __u32 total_blocks;
+ __u32 free_blocks;
+ __u32 next_alloc;
+ __u32 rsrc_clump_sz;
+ __u32 data_clump_sz;
+ __u32 next_cnid;
+ __u32 write_count;
+ __u64 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__)) *hfsplus;
+
+ unsigned int blocksize;
+ unsigned int cat_block;
+ unsigned int ext_block_start;
+ unsigned int ext_block_count;
+ int ext;
+ unsigned int leaf_node_head;
+ unsigned int leaf_node_count;
+ unsigned int leaf_node_size;
+ unsigned int leaf_block;
+ __u64 leaf_off;
+ unsigned int alloc_block_size;
+ unsigned int alloc_first_block;
+ unsigned int embed_first_block;
+ unsigned int record_count;
+ struct hfsplus_bnode_descriptor *descr;
+ struct hfsplus_bheader_record *bnode;
+ struct hfsplus_catalog_key *key;
+ unsigned int label_len;
+ struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
+ const __u8 *buf;
+
+ buf = get_buffer(id, off + HFS_SUPERBLOCK_OFFSET, 0x200);
+ if (buf == NULL)
+ return -1;
+
+ hfs = (struct hfs_mdb *) buf;
+ if (strncmp(hfs->signature, "BD", 2) != 0)
+ goto checkplus;
+
+ /* it may be just a hfs wrapper for hfs+ */
+ if (strncmp(hfs->embed_sig, "H+", 2) == 0) {
+ alloc_block_size = be32_to_cpu(hfs->al_blk_size);
+ dbg("alloc_block_size 0x%x", alloc_block_size);
+
+ alloc_first_block = be16_to_cpu(hfs->al_bl_st);
+ dbg("alloc_first_block 0x%x", alloc_first_block);
+
+ embed_first_block = be16_to_cpu(hfs->embed_startblock);
+ dbg("embed_first_block 0x%x", embed_first_block);
+
+ off += (alloc_first_block * 512) +
+ (embed_first_block * alloc_block_size);
+ dbg("hfs wrapped hfs+ found at offset 0x%llx", off);
+
+ buf = get_buffer(id, off + HFS_SUPERBLOCK_OFFSET, 0x200);
+ if (buf == NULL)
+ return -1;
+ goto checkplus;
+ }
+
+ if (hfs->label_len > 0 && hfs->label_len < 28) {
+ set_label_raw(id, hfs->label, hfs->label_len);
+ set_label_string(id, hfs->label, hfs->label_len) ;
+ }
+
+ set_uuid(id, hfs->finder_info.id, UUID_HFS);
+
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_HFS;
+ id->type = "hfs";
+
+ return 0;
+
+checkplus:
+ hfsplus = (struct hfsplus_vol_header *) buf;
+ if (strncmp(hfsplus->signature, "H+", 2) == 0)
+ goto hfsplus;
+ if (strncmp(hfsplus->signature, "HX", 2) == 0)
+ goto hfsplus;
+ return -1;
+
+hfsplus:
+ set_uuid(id, hfsplus->finder_info.id, UUID_HFS);
+
+ blocksize = be32_to_cpu(hfsplus->blocksize);
+ dbg("blocksize %u", blocksize);
+
+ memcpy(extents, hfsplus->cat_file.extents, sizeof(extents));
+ cat_block = be32_to_cpu(extents[0].start_block);
+ dbg("catalog start block 0x%x", cat_block);
+
+ buf = get_buffer(id, off + (cat_block * blocksize), 0x2000);
+ if (buf == NULL)
goto found;
- if (strncmp(ms->ms_magic, "FAT16 ", 8) == 0)
+
+ bnode = (struct hfsplus_bheader_record *)
+ &buf[sizeof(struct hfsplus_bnode_descriptor)];
+
+ leaf_node_head = be32_to_cpu(bnode->leaf_head);
+ dbg("catalog leaf node 0x%x", leaf_node_head);
+
+ leaf_node_size = be16_to_cpu(bnode->node_size);
+ dbg("leaf node size 0x%x", leaf_node_size);
+
+ leaf_node_count = be32_to_cpu(bnode->leaf_count);
+ dbg("leaf node count 0x%x", leaf_node_count);
+ if (leaf_node_count == 0)
goto found;
- if (strncmp(ms->ms_magic, "FAT12 ", 8) == 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);
+ dbg("extent start block 0x%x, count 0x%x", ext_block_start, ext_block_count);
+
+ if (ext_block_count == 0)
+ goto found;
+
+ /* this is our extent */
+ if (leaf_block < ext_block_count)
+ break;
+
+ leaf_block -= ext_block_count;
+ }
+ if (ext == HFSPLUS_EXTENT_COUNT)
goto found;
- return -1;
+ dbg("found block in extent %i", ext);
-found:
- set_label(id, ms->ms_label, 11);
- set_uuid(id, ms->ms_serno, 4);
+ leaf_off = (ext_block_start + leaf_block) * blocksize;
- id->fs_type = MSDOS;
- id->fs_name = "msdos";
+ buf = get_buffer(id, off + leaf_off, leaf_node_size);
+ if (buf == NULL)
+ goto found;
+
+ descr = (struct hfsplus_bnode_descriptor *) buf;
+ dbg("descriptor type 0x%x", descr->type);
+
+ record_count = be16_to_cpu(descr->num_recs);
+ dbg("number of records %u", record_count);
+ if (record_count == 0)
+ goto found;
+
+ if (descr->type != HFS_NODE_LEAF)
+ goto found;
+
+ key = (struct hfsplus_catalog_key *)
+ &buf[sizeof(struct hfsplus_bnode_descriptor)];
+
+ dbg("parent id 0x%x", be32_to_cpu(key->parent_id));
+ if (be32_to_cpu(key->parent_id) != HFSPLUS_POR_CNID)
+ goto found;
+
+ label_len = be16_to_cpu(key->unicode_len) * 2;
+ dbg("label unicode16 len %i", label_len);
+ set_label_raw(id, key->unicode, label_len);
+ set_label_unicode16(id, key->unicode, BE, label_len);
+
+found:
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_HFSPLUS;
+ id->type = "hfsplus";
return 0;
}
-static int probe_ntfs(struct volume_id *id)
+#define MFT_RECORD_VOLUME 3
+#define MFT_RECORD_ATTR_VOLUME_NAME 0x60
+#define MFT_RECORD_ATTR_VOLUME_INFO 0x70
+#define MFT_RECORD_ATTR_OBJECT_ID 0x40
+#define MFT_RECORD_ATTR_END 0xffffffffu
+static int probe_ntfs(struct volume_id *id, __u64 off)
{
struct ntfs_super_block {
- char jump[3];
- char oem_id[4];
- } *ns;
-
- ns = (struct ntfs_super_block *) id->buf;
+ __u8 jump[3];
+ __u8 oem_id[8];
+ __u16 bytes_per_sector;
+ __u8 sectors_per_cluster;
+ __u16 reserved_sectors;
+ __u8 fats;
+ __u16 root_entries;
+ __u16 sectors;
+ __u8 media_type;
+ __u16 sectors_per_fat;
+ __u16 sectors_per_track;
+ __u16 heads;
+ __u32 hidden_sectors;
+ __u32 large_sectors;
+ __u16 unused[2];
+ __u64 number_of_sectors;
+ __u64 mft_cluster_location;
+ __u64 mft_mirror_cluster_location;
+ __s8 cluster_per_mft_record;
+ __u8 reserved1[3];
+ __s8 cluster_per_index_record;
+ __u8 reserved2[3];
+ __u8 volume_serial[8];
+ __u16 checksum;
+ } __attribute__((__packed__)) *ns;
+
+ struct master_file_table_record {
+ __u8 magic[4];
+ __u16 usa_ofs;
+ __u16 usa_count;
+ __u64 lsn;
+ __u16 sequence_number;
+ __u16 link_count;
+ __u16 attrs_offset;
+ __u16 flags;
+ __u32 bytes_in_use;
+ __u32 bytes_allocated;
+ } __attribute__((__packed__)) *mftr;
+
+ struct file_attribute {
+ __u32 type;
+ __u32 len;
+ __u8 non_resident;
+ __u8 name_len;
+ __u16 name_offset;
+ __u16 flags;
+ __u16 instance;
+ __u32 value_len;
+ __u16 value_offset;
+ } __attribute__((__packed__)) *attr;
+
+ struct volume_info {
+ __u64 reserved;
+ __u8 major_ver;
+ __u8 minor_ver;
+ } __attribute__((__packed__)) *info;
+
+ unsigned int sector_size;
+ unsigned int cluster_size;
+ __u64 mft_cluster;
+ __u64 mft_off;
+ unsigned int mft_record_size;
+ unsigned int attr_type;
+ unsigned int attr_off;
+ unsigned int attr_len;
+ unsigned int val_off;
+ unsigned int val_len;
+ const __u8 *buf;
+ const __u8 *val;
+
+ ns = (struct ntfs_super_block *) get_buffer(id, off, 0x200);
+ if (ns == NULL)
+ return -1;
if (strncmp(ns->oem_id, "NTFS", 4) != 0)
return -1;
- id->fs_type = NTFS;
- id->fs_name = "ntfs";
+ set_uuid(id, ns->volume_serial, UUID_NTFS);
+
+ sector_size = le16_to_cpu(ns->bytes_per_sector);
+ cluster_size = ns->sectors_per_cluster * sector_size;
+ mft_cluster = le64_to_cpu(ns->mft_cluster_location);
+ mft_off = mft_cluster * cluster_size;
+
+ if (ns->cluster_per_mft_record < 0)
+ /* size = -log2(mft_record_size); normally 1024 Bytes */
+ mft_record_size = 1 << -ns->cluster_per_mft_record;
+ else
+ mft_record_size = ns->cluster_per_mft_record * cluster_size;
+
+ dbg("sectorsize 0x%x", sector_size);
+ dbg("clustersize 0x%x", cluster_size);
+ dbg("mftcluster %lli", mft_cluster);
+ dbg("mftoffset 0x%llx", mft_off);
+ dbg("cluster per mft_record %i", ns->cluster_per_mft_record);
+ dbg("mft record size %i", mft_record_size);
+
+ buf = get_buffer(id, off + mft_off + (MFT_RECORD_VOLUME * mft_record_size),
+ mft_record_size);
+ if (buf == NULL)
+ goto found;
+
+ mftr = (struct master_file_table_record*) buf;
+
+ dbg("mftr->magic '%c%c%c%c'", mftr->magic[0], mftr->magic[1], mftr->magic[2], mftr->magic[3]);
+ if (strncmp(mftr->magic, "FILE", 4) != 0)
+ goto found;
+
+ attr_off = le16_to_cpu(mftr->attrs_offset);
+ dbg("file $Volume's attributes are at offset %i", attr_off);
+
+ while (1) {
+ attr = (struct file_attribute*) &buf[attr_off];
+ attr_type = le32_to_cpu(attr->type);
+ attr_len = le16_to_cpu(attr->len);
+ val_off = le16_to_cpu(attr->value_offset);
+ val_len = le32_to_cpu(attr->value_len);
+ attr_off += attr_len;
+
+ if (attr_len == 0)
+ break;
+
+ if (attr_off >= mft_record_size)
+ break;
+
+ if (attr_type == MFT_RECORD_ATTR_END)
+ break;
+
+ dbg("found attribute type 0x%x, len %i, at offset %i",
+ attr_type, attr_len, attr_off);
+
+ if (attr_type == MFT_RECORD_ATTR_VOLUME_INFO) {
+ dbg("found info, len %i", val_len);
+ info = (struct volume_info*) (((__u8 *) attr) + val_off);
+ snprintf(id->type_version, VOLUME_ID_FORMAT_SIZE-1,
+ "%u.%u", info->major_ver, info->minor_ver);
+ }
+
+ if (attr_type == MFT_RECORD_ATTR_VOLUME_NAME) {
+ dbg("found label, len %i", val_len);
+ if (val_len > VOLUME_ID_LABEL_SIZE)
+ val_len = VOLUME_ID_LABEL_SIZE;
+
+ val = ((__u8 *) attr) + val_off;
+ set_label_raw(id, val, val_len);
+ set_label_unicode16(id, val, LE, val_len);
+ }
+ }
+
+found:
+ id->usage_id = VOLUME_ID_FILESYSTEM;
+ id->type_id = VOLUME_ID_NTFS;
+ id->type = "ntfs";
return 0;
}
-static int probe_swap(struct volume_id *id)
+#define LARGEST_PAGESIZE 0x4000
+static int probe_swap(struct volume_id *id, __u64 off)
{
- int magic;
-
- /* huhh, the swap signature is on the end of the PAGE_SIZE */
- for (magic = 0x1000; magic <= 0x4000; magic <<= 1) {
- if (strncmp(&(id->buf[magic -10]), "SWAP-SPACE", 10) == 0)
+ struct swap_header_v1_2 {
+ __u8 bootbits[1024];
+ __u32 version;
+ __u32 last_page;
+ __u32 nr_badpages;
+ __u8 uuid[16];
+ __u8 volume_name[16];
+ } __attribute__((__packed__)) *sw;
+
+ const __u8 *buf;
+ unsigned int page;
+
+ /* the swap signature is at the end of the PAGE_SIZE */
+ for (page = 0x1000; page <= LARGEST_PAGESIZE; page <<= 1) {
+ buf = get_buffer(id, off + page-10, 10);
+ if (buf == NULL)
+ return -1;
+
+ if (strncmp(buf, "SWAP-SPACE", 10) == 0) {
+ strcpy(id->type_version, "1");
goto found;
- if (strncmp(&(id->buf[magic -10]), "SWAPSPACE2", 10) == 0)
+ }
+
+ if (strncmp(buf, "SWAPSPACE2", 10) == 0) {
+ sw = (struct swap_header_v1_2 *) get_buffer(id, off, sizeof(struct swap_header_v1_2));
+ if (sw == NULL)
+ return -1;
+ strcpy(id->type_version, "2");
+ set_label_raw(id, sw->volume_name, 16);
+ set_label_string(id, sw->volume_name, 16);
+ set_uuid(id, sw->uuid, UUID_DCE);
goto found;
+ }
}
return -1;
found:
- id->fs_type = SWAP;
- id->fs_name = "swap";
+ id->usage_id = VOLUME_ID_OTHER;
+ id->type_id = VOLUME_ID_SWAP;
+ id->type = "swap";
return 0;
}
/* probe volume for filesystem type and try to read label+uuid */
-int volume_id_probe(struct volume_id *id, enum filesystem_type fs_type)
+int volume_id_probe(struct volume_id *id,
+ enum volume_id_type type,
+ unsigned long long off,
+ unsigned long long size)
{
int rc;
+ dbg("called with size=0x%llx", size);
+
if (id == NULL)
return -EINVAL;
- if (open_superblock(id) != 0)
- return -EACCES;
-
- switch (fs_type) {
- case EXT3:
- case EXT2:
- rc = probe_ext(id);
+ switch (type) {
+ case VOLUME_ID_MSDOSPARTTABLE:
+ rc = probe_msdos_part_table(id, off);
break;
- case REISER:
- rc = probe_reiser(id);
+ case VOLUME_ID_EXT3:
+ case VOLUME_ID_EXT2:
+ rc = probe_ext(id, off);
break;
- case XFS:
- rc = probe_xfs(id);
+ case VOLUME_ID_REISERFS:
+ rc = probe_reiserfs(id, off);
break;
- case JFS:
- rc = probe_jfs(id);
+ case VOLUME_ID_XFS:
+ rc = probe_xfs(id, off);
break;
- case MSDOS:
- rc = probe_msdos(id);
+ case VOLUME_ID_JFS:
+ rc = probe_jfs(id, off);
break;
- case VFAT:
- rc = probe_vfat(id);
+ case VOLUME_ID_VFAT:
+ rc = probe_vfat(id, off);
break;
- case NTFS:
- rc = probe_ntfs(id);
+ case VOLUME_ID_UDF:
+ rc = probe_udf(id, off);
break;
- case SWAP:
- rc = probe_swap(id);
+ case VOLUME_ID_ISO9660:
+ rc = probe_iso9660(id, off);
break;
+ case VOLUME_ID_MACPARTMAP:
+ rc = probe_mac_partition_map(id, off);
+ break;
+ case VOLUME_ID_HFS:
+ case VOLUME_ID_HFSPLUS:
+ rc = probe_hfs_hfsplus(id, off);
+ break;
+ case VOLUME_ID_UFS:
+ rc = probe_ufs(id, off);
+ break;
+ case VOLUME_ID_NTFS:
+ rc = probe_ntfs(id, off);
+ break;
+ case VOLUME_ID_SWAP:
+ rc = probe_swap(id, off);
+ break;
+ case VOLUME_ID_LINUX_RAID:
+ rc = probe_linux_raid(id, off, size);
+ break;
+ case VOLUME_ID_LVM1:
+ rc = probe_lvm1(id, off);
+ break;
+ case VOLUME_ID_LVM2:
+ rc = probe_lvm2(id, off);
+ break;
+ case VOLUME_ID_HPTRAID:
+ rc = probe_highpoint_ataraid(id, off);
+ break;
+ case VOLUME_ID_ALL:
default:
- rc = probe_ext(id);
+ /* probe for raid first, cause fs probes may be successful on raid members */
+ rc = probe_linux_raid(id, off, size);
if (rc == 0)
break;
- rc = probe_reiser(id);
+ rc = probe_lvm1(id, off);
if (rc == 0)
break;
- rc = probe_xfs(id);
+ rc = probe_lvm2(id, off);
if (rc == 0)
break;
- rc = probe_jfs(id);
+ rc = probe_highpoint_ataraid(id, off);
if (rc == 0)
break;
- rc = probe_msdos(id);
+
+ /* signature in the first block, only small buffer needed */
+ rc = probe_vfat(id, off);
if (rc == 0)
break;
- rc = probe_vfat(id);
+ rc = probe_mac_partition_map(id, off);
if (rc == 0)
break;
- rc = probe_ntfs(id);
+ rc = probe_xfs(id, off);
if (rc == 0)
break;
- rc = probe_swap(id);
+
+ /* fill buffer with maximum */
+ get_buffer(id, 0, SB_BUFFER_SIZE);
+
+ rc = probe_swap(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_ext(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_reiserfs(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_jfs(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_udf(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_iso9660(id, off);
if (rc == 0)
break;
+ rc = probe_hfs_hfsplus(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_ufs(id, off);
+ if (rc == 0)
+ break;
+ rc = probe_ntfs(id, off);
+ if (rc == 0)
+ break;
+
rc = -1;
}
+ /* If the filestystem in recognized, we free the allocated buffers,
+ otherwise they will stay in place for the possible next probe call */
if (rc == 0)
- close_superblock(id);
+ free_buffer(id);
return rc;
}
int fd;
fd = open(path, O_RDONLY);
- if (fd < 0)
+ if (fd < 0) {
+ dbg("unable to open '%s'", path);
return NULL;
+ }
id = volume_id_open_fd(fd);
if (id == NULL)
struct volume_id *volume_id_open_dev_t(dev_t devt)
{
struct volume_id *id;
- char tmp_node[VOLUME_ID_PATH_MAX];
+ __u8 tmp_node[VOLUME_ID_PATH_MAX];
snprintf(tmp_node, VOLUME_ID_PATH_MAX,
- "/tmp/volume-%u-%u", major(devt), minor(devt));
+ "/tmp/volume-%u-%u-%u", getpid(), major(devt), minor(devt));
tmp_node[VOLUME_ID_PATH_MAX] = '\0';
/* create tempory node to open the block device */
+ unlink(tmp_node);
if (mknod(tmp_node, (S_IFBLK | 0600), devt) != 0)
return NULL;
if (id->fd_close != 0)
close(id->fd);
- close_superblock(id);
+ free_buffer(id);
+
+ if (id->partitions != NULL)
+ free(id->partitions);
free(id);
}
~ianmdlvl / elogind.git / blobdiff