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/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*/
#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 "volume_id.h"
#include "logging.h"
#include "util.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 = (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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