chore: import upstream snapshot with attribution

misc/fsUtils/dirUtils.go

@@ -0,0 +1,25 @@
+package fsUtils
+
+import (
+	"fmt"
+	"os"
+)
+
+func EnsureDir(dirName string) error {
+	err := os.Mkdir(dirName, 0700)
+	if err == nil {
+		return nil
+	}
+	if os.IsExist(err) {
+		// check that the existing path is a directory
+		info, err := os.Stat(dirName)
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			return fmt.Errorf("path exists but is not a directory: %s", dirName)
+		}
+		return nil
+	}
+	return err
+}