blob: a31b7bb478e19919077f984d64c2d67286094ef0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#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;
}
|
