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/*
* 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;
}
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