Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/boot/efi/device-path-util.h b/src/boot/efi/device-path-util.h
new file mode 100644
index 0000000..08f1a9c
--- /dev/null
+++ b/src/boot/efi/device-path-util.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "proto/device-path.h"
+
+EFI_STATUS make_file_device_path(EFI_HANDLE device, const char16_t *file, EFI_DEVICE_PATH **ret_dp);
+EFI_STATUS device_path_to_str(const EFI_DEVICE_PATH *dp, char16_t **ret);
+bool device_path_startswith(const EFI_DEVICE_PATH *dp, const EFI_DEVICE_PATH *start);
+EFI_DEVICE_PATH *device_path_replace_node(
+                const EFI_DEVICE_PATH *path, const EFI_DEVICE_PATH *node, const EFI_DEVICE_PATH *new_node);
+
+static inline EFI_DEVICE_PATH *device_path_next_node(const EFI_DEVICE_PATH *dp) {
+        assert(dp);
+        return (EFI_DEVICE_PATH *) ((uint8_t *) dp + dp->Length);
+}
+
+static inline bool device_path_is_end(const EFI_DEVICE_PATH *dp) {
+        assert(dp);
+        return dp->Type == END_DEVICE_PATH_TYPE && dp->SubType == END_ENTIRE_DEVICE_PATH_SUBTYPE;
+}
+
+#define DEVICE_PATH_END_NODE                               \
+        (EFI_DEVICE_PATH) {                                \
+                .Type = END_DEVICE_PATH_TYPE,              \
+                .SubType = END_ENTIRE_DEVICE_PATH_SUBTYPE, \
+                .Length = sizeof(EFI_DEVICE_PATH)          \
+        }