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/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
* Copyright (C) 2005 Tobias Klauser <tklauser@access.unizh.ch>
*
* 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 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 "volume_id_internal.h"
struct reiserfs_super_block {
uint32_t blocks_count;
uint32_t free_blocks;
uint32_t root_block;
uint32_t journal_block;
uint32_t journal_dev;
uint32_t orig_journal_size;
uint32_t dummy2[5];
uint16_t blocksize;
uint16_t dummy3[3];
uint8_t magic[12];
uint32_t dummy4[5];
uint8_t uuid[16];
uint8_t label[16];
} __attribute__((__packed__));
struct reiser4_super_block {
uint8_t magic[16];
uint16_t dummy[2];
uint8_t uuid[16];
uint8_t label[16];
uint64_t dummy2;
} __attribute__((__packed__));
#define REISERFS1_SUPERBLOCK_OFFSET 0x2000
#define REISERFS_SUPERBLOCK_OFFSET 0x10000
int volume_id_probe_reiserfs(struct volume_id *id, uint64_t off)
{
struct reiserfs_super_block *rs;
struct reiser4_super_block *rs4;
dbg("reiserfs: probing at offset 0x%llx", (unsigned long long) off);
rs = volume_id_get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200);
if (rs == NULL)
return -1;
if (memcmp(rs->magic, "ReIsErFs", 8) == 0) {
dbg("reiserfs: ReIsErFs, no label");
// strcpy(id->type_version, "3.5");
goto found;
}
if (memcmp(rs->magic, "ReIsEr2Fs", 9) == 0) {
dbg("reiserfs: ReIsEr2Fs");
// strcpy(id->type_version, "3.6");
goto found_label;
}
if (memcmp(rs->magic, "ReIsEr3Fs", 9) == 0) {
dbg("reiserfs: ReIsEr3Fs");
// strcpy(id->type_version, "JR");
goto found_label;
}
rs4 = (struct reiser4_super_block *) rs;
if (memcmp(rs4->magic, "ReIsEr4", 7) == 0) {
// strcpy(id->type_version, "4");
// volume_id_set_label_raw(id, rs4->label, 16);
volume_id_set_label_string(id, rs4->label, 16);
volume_id_set_uuid(id, rs4->uuid, UUID_DCE);
dbg("reiserfs: ReIsEr4, label '%s' uuid '%s'", id->label, id->uuid);
goto found;
}
rs = volume_id_get_buffer(id, off + REISERFS1_SUPERBLOCK_OFFSET, 0x200);
if (rs == NULL)
return -1;
if (memcmp(rs->magic, "ReIsErFs", 8) == 0) {
dbg("reiserfs: ReIsErFs, no label");
// strcpy(id->type_version, "3.5");
goto found;
}
dbg("reiserfs: no signature found");
return -1;
found_label:
// volume_id_set_label_raw(id, rs->label, 16);
volume_id_set_label_string(id, rs->label, 16);
volume_id_set_uuid(id, rs->uuid, UUID_DCE);
dbg("reiserfs: label '%s' uuid '%s'", id->label, id->uuid);
found:
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// id->type = "reiserfs";
return 0;
}
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