From: Kay Sievers <kay@vrfy.org>
Date: Wed, 29 Jul 2015 17:26:49 +0000 (+0200)
Subject: sd-boot: stub - export LoaderDevicePartUUID
X-Git-Tag: v226.4~1^2~170
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=1131678bf7faf5b1ff992e4d1b5546e8d3e4ba5d;hp=14204fc284cf8083286e621bb8fda4bca5bc410f

sd-boot: stub - export LoaderDevicePartUUID
---

diff --git a/src/boot/efi/disk.c b/src/boot/efi/disk.c
new file mode 100644
index 000000000..96063fbc2
--- /dev/null
+++ b/src/boot/efi/disk.c
@@ -0,0 +1,51 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/*
+ * 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;
+}
diff --git a/src/boot/efi/disk.h b/src/boot/efi/disk.h
new file mode 100644
index 000000000..1b25343a0
--- /dev/null
+++ b/src/boot/efi/disk.h
@@ -0,0 +1,21 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/*
+ * 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>
+ */
+
+#ifndef __SDBOOT_DISK_H
+#define __SDBOOT_DISK_H
+
+EFI_STATUS disk_get_part_uuid(EFI_HANDLE *handle, CHAR16 uuid[37]);
+#endif