60 lines
1.6 KiB
C
60 lines
1.6 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 xfs_super_block {
|
|
uint8_t magic[4];
|
|
uint32_t blocksize;
|
|
uint64_t dblocks;
|
|
uint64_t rblocks;
|
|
uint32_t dummy1[2];
|
|
uint8_t uuid[16];
|
|
uint32_t dummy2[15];
|
|
uint8_t fname[12];
|
|
uint32_t dummy3[2];
|
|
uint64_t icount;
|
|
uint64_t ifree;
|
|
uint64_t fdblocks;
|
|
} __attribute__((__packed__));
|
|
|
|
int volume_id_probe_xfs(struct volume_id *id, uint64_t off)
|
|
{
|
|
struct xfs_super_block *xs;
|
|
|
|
dbg("probing at offset 0x%llx", (unsigned long long) off);
|
|
|
|
xs = volume_id_get_buffer(id, off, 0x200);
|
|
if (xs == NULL)
|
|
return -1;
|
|
|
|
if (memcmp(xs->magic, "XFSB", 4) != 0)
|
|
return -1;
|
|
|
|
volume_id_set_label_raw(id, xs->fname, 12);
|
|
volume_id_set_label_string(id, xs->fname, 12);
|
|
volume_id_set_uuid(id, xs->uuid, UUID_DCE);
|
|
|
|
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
|
|
id->type = "xfs";
|
|
|
|
return 0;
|
|
}
|