Added documentation for container and backing

src/backing.c

@@ -149,7 +149,7 @@ result_t add_backing(char** _backing, const char* container) {
 	return result;
 }
 
-result_t import_backing(char** _backing, const char* path) {
+result_t import_backing(char** _backing, const char* disk) {
 	// Initialize the output parameters
 	*_backing = NULL;
 
@@ -160,7 +160,7 @@ result_t import_backing(char** _backing, const char* path) {
 		return result;
 
 	// Copy the disk to the temporary backing path
-	result = copy_file(path, temp_path);
+	result = copy_file(disk, temp_path);
 	if (result != success()) {
 		free(temp_path);
 		return result;