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-rw-r--r--lib/efi_loader/efi_variable.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c
index d6b75ca02e..f71dc29ee9 100644
--- a/lib/efi_loader/efi_variable.c
+++ b/lib/efi_loader/efi_variable.c
@@ -520,3 +520,30 @@ out:
return EFI_EXIT(ret);
}
+
+/**
+ * efi_query_variable_info() - get information about EFI variables
+ *
+ * This function implements the QueryVariableInfo() runtime service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @attributes: bitmask to select variables to be
+ * queried
+ * @maximum_variable_storage_size: maximum size of storage area for the
+ * selected variable types
+ * @remaining_variable_storage_size: remaining size of storage are for the
+ * selected variable types
+ * @maximum_variable_size: maximum size of a variable of the
+ * selected type
+ * Returns: status code
+ */
+efi_status_t __efi_runtime EFIAPI efi_query_variable_info(
+ u32 attributes,
+ u64 *maximum_variable_storage_size,
+ u64 *remaining_variable_storage_size,
+ u64 *maximum_variable_size)
+{
+ return EFI_UNSUPPORTED;
+}