mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-27 18:55:19 +03:00
fcbef05aae
Hmm rpmlint suggest fsf is using a different address these days, so lets keep it up-to-date
45 lines
1018 B
C
45 lines
1018 B
C
/*
|
|
* Copyright (C) 2010 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "lib.h"
|
|
#include "dev-type.h"
|
|
|
|
#define LUKS_SIGNATURE "LUKS\xba\xbe"
|
|
#define LUKS_SIGNATURE_SIZE 6
|
|
|
|
int dev_is_luks(struct device *dev, uint64_t *offset_found)
|
|
{
|
|
char buf[LUKS_SIGNATURE_SIZE];
|
|
int ret = -1;
|
|
|
|
if (!dev_open_readonly(dev)) {
|
|
stack;
|
|
return -1;
|
|
}
|
|
|
|
if (offset_found)
|
|
*offset_found = 0;
|
|
|
|
if (!dev_read(dev, 0, LUKS_SIGNATURE_SIZE, buf))
|
|
goto_out;
|
|
|
|
ret = memcmp(buf, LUKS_SIGNATURE, LUKS_SIGNATURE_SIZE) ? 0 : 1;
|
|
|
|
out:
|
|
if (!dev_close(dev))
|
|
stack;
|
|
|
|
return ret;
|
|
}
|