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authorLuke Shumaker <lukeshu@sbcglobal.net>2016-06-06 22:48:01 -0400
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-06-06 22:48:01 -0400
commit3becb99f442630e1f0771a86320dd668e3da03c3 (patch)
tree5c18d6eaa7a80a4ab1eb36b3b774a5c65d0c2590 /src/grp-boot/systemd-boot/disk.c
parent4511e28baca960f9a732e600af6acbb242b22b91 (diff)
stuff
Diffstat (limited to 'src/grp-boot/systemd-boot/disk.c')
-rw-r--r--src/grp-boot/systemd-boot/disk.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/grp-boot/systemd-boot/disk.c b/src/grp-boot/systemd-boot/disk.c
new file mode 100644
index 0000000000..3e3b5b224a
--- /dev/null
+++ b/src/grp-boot/systemd-boot/disk.c
@@ -0,0 +1,49 @@
+/*
+ * 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 (C) 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;
+ EFI_STATUS r = EFI_NOT_FOUND;
+
+ /* export the device path this image is started from */
+ device_path = DevicePathFromHandle(handle);
+ if (device_path) {
+ EFI_DEVICE_PATH *path, *paths;
+
+ 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);
+ r = EFI_SUCCESS;
+ break;
+ }
+ FreePool(paths);
+ }
+
+ return r;
+}