unset umask (#2927)

cmd/init_unix.go

@@ -0,0 +1,11 @@
+// +build !windows
+
+package cmd
+
+import "syscall"
+
+func init() {
+	// unset umask otherwise permissions on file or directory
+	// creation are altered in unpredictable ways.
+	syscall.Umask(0)
+}