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/*
* Copyright (C) 2017 Red Hat, Inc.
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <stdint.h>
#include "superblocks.h"
struct vdo_super_block {
char magic[8]; /* magic number 'dmvdo001'*/
char unused[32]; /* 32 bytes of unimportant space */
unsigned char sb_uuid[16]; /* vdo unique id */
/* this is not all... but enough for libblkid */
} __attribute__((packed));
static int probe_vdo(blkid_probe pr, const struct blkid_idmag *mag)
{
const struct vdo_super_block *vsb;
vsb = blkid_probe_get_sb(pr, mag, struct vdo_super_block);
if (!vsb)
return errno ? -errno : 1;
blkid_probe_set_uuid(pr, vsb->sb_uuid);
return 0;
}
const struct blkid_idinfo vdo_idinfo =
{
.name = "vdo",
.usage = BLKID_USAGE_OTHER,
.probefunc = probe_vdo,
.magics =
{
{ .magic = "dmvdo001", .len = 8 },
{ NULL }
}
};
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