49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
/*
|
|
* This program 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 program 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.
|
|
*
|
|
* Copyright © 2015 Kay Sievers <kay@vrfy.org>
|
|
*/
|
|
|
|
#include <efi.h>
|
|
#include <efilib.h>
|
|
|
|
#include "util.h"
|
|
|
|
EFI_STATUS disk_get_part_uuid(EFI_HANDLE *handle, CHAR16 uuid[37]) {
|
|
EFI_DEVICE_PATH *device_path;
|
|
|
|
/* export the device path this image is started from */
|
|
device_path = DevicePathFromHandle(handle);
|
|
if (device_path) {
|
|
_cleanup_freepool_ EFI_DEVICE_PATH *paths = NULL;
|
|
EFI_DEVICE_PATH *path;
|
|
|
|
paths = UnpackDevicePath(device_path);
|
|
for (path = paths; !IsDevicePathEnd(path); path = NextDevicePathNode(path)) {
|
|
HARDDRIVE_DEVICE_PATH *drive;
|
|
|
|
if (DevicePathType(path) != MEDIA_DEVICE_PATH)
|
|
continue;
|
|
if (DevicePathSubType(path) != MEDIA_HARDDRIVE_DP)
|
|
continue;
|
|
drive = (HARDDRIVE_DEVICE_PATH *)path;
|
|
if (drive->SignatureType != SIGNATURE_TYPE_GUID)
|
|
continue;
|
|
|
|
GuidToString(uuid, (EFI_GUID *)&drive->Signature);
|
|
return EFI_SUCCESS;
|
|
}
|
|
}
|
|
|
|
return EFI_NOT_FOUND;
|
|
}
|