893009644f
function old new delta volume_id_probe_iso9660 324 327 +3 volume_id_probe_vfat 902 903 +1 volume_id_probe_udf 576 577 +1 volume_id_probe_ntfs 314 315 +1 uuidcache_check_device 292 291 -1 volume_id_probe_xfs 87 85 -2 volume_id_probe_sysv 165 163 -2 volume_id_probe_romfs 89 87 -2 volume_id_probe_reiserfs 236 234 -2 volume_id_probe_ocfs2 96 94 -2 volume_id_probe_luks 78 76 -2 volume_id_probe_linux_swap 165 163 -2 volume_id_probe_jfs 96 94 -2 volume_id_probe_hfs_hfsplus 795 793 -2 volume_id_probe_ext 82 80 -2 volume_id_probe_cramfs 59 57 -2 volume_id_probe_btrfs 96 94 -2 free_volume_id 36 31 -5 volume_id_probe_linux_raid 127 119 -8 volume_id_probe_all 152 138 -14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/16 up/down: 6/-52) Total: -46 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
|
|
* volume_id - reads filesystem label and uuid
|
|
*
|
|
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
|
|
*
|
|
* 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 ext2_super_block {
|
|
uint32_t inodes_count;
|
|
uint32_t blocks_count;
|
|
uint32_t r_blocks_count;
|
|
uint32_t free_blocks_count;
|
|
uint32_t free_inodes_count;
|
|
uint32_t first_data_block;
|
|
uint32_t log_block_size;
|
|
uint32_t dummy3[7];
|
|
uint8_t magic[2];
|
|
uint16_t state;
|
|
uint32_t dummy5[8];
|
|
uint32_t feature_compat;
|
|
uint32_t feature_incompat;
|
|
uint32_t feature_ro_compat;
|
|
uint8_t uuid[16];
|
|
uint8_t volume_name[16];
|
|
} PACKED;
|
|
|
|
#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004
|
|
#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008
|
|
#define EXT_SUPERBLOCK_OFFSET 0x400
|
|
|
|
int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/)
|
|
{
|
|
#define off ((uint64_t)0)
|
|
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;
|
|
}
|