		perm : function(file1, file2) { 
			var val = function(file) { return (file.write? 2 : 0) + (file.read? 1 : 0); },
				v1  = val(file1),
				v2  = val(file2);
			return v1 === v2 ? 0 : v1 > v2 ? 1 : -1
		},
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.