mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-11-01 00:51:08 +03:00
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
|
|
* 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 "libvolume_id.h"
|
|
#include "util.h"
|
|
|
|
#define VXFS_SUPER_MAGIC 0xa501FCF5
|
|
|
|
struct vxfs_super {
|
|
uint32_t vs_magic;
|
|
int32_t vs_version;
|
|
} PACKED;
|
|
|
|
int volume_id_probe_vxfs(struct volume_id *id, uint64_t off, uint64_t size)
|
|
{
|
|
struct vxfs_super *vxs;
|
|
|
|
info("probing at offset 0x%llx", (unsigned long long) off);
|
|
|
|
vxs = (struct vxfs_super *) volume_id_get_buffer(id, off + 0x200, 0x200);
|
|
if (vxs == NULL)
|
|
return -1;
|
|
|
|
if (vxs->vs_magic == cpu_to_le32(VXFS_SUPER_MAGIC)) {
|
|
snprintf(id->type_version, sizeof(id->type_version)-1, "%u", (unsigned int) vxs->vs_version);
|
|
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
|
|
id->type = "vxfs";
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|