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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
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <asm/types.h>
#include "../volume_id.h"
#include "../logging.h"
#include "../util.h"
#include "xfs.h"
struct xfs_super_block {
__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__));
int volume_id_probe_xfs(struct volume_id *id, __u64 off)
{
struct xfs_super_block *xs;
dbg("probing at offset %llu", off);
xs = (struct xfs_super_block *) 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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