Move GetFileModeRegex to e2e/common

because the function is used at e2e/common tests only.

test/e2e/common/util.go

@@ -20,6 +20,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"os"
 	"text/template"
 	"time"
 
@@ -222,3 +223,24 @@ func setPodNonRootUser(pod *v1.Pod) {
 		pod.Spec.SecurityContext.RunAsUser = &nonRootTestUserID
 	}
 }
+
+// getFileModeRegex returns a file mode related regex which should be matched by the mounttest pods' output.
+// If the given mask is nil, then the regex will contain the default OS file modes, which are 0644 for Linux and 0775 for Windows.
+func getFileModeRegex(filePath string, mask *int32) string {
+	var (
+		linuxMask   int32
+		windowsMask int32
+	)
+	if mask == nil {
+		linuxMask = int32(0644)
+		windowsMask = int32(0775)
+	} else {
+		linuxMask = *mask
+		windowsMask = *mask
+	}
+
+	linuxOutput := fmt.Sprintf("mode of file \"%s\": %v", filePath, os.FileMode(linuxMask))
+	windowsOutput := fmt.Sprintf("mode of Windows file \"%v\": %s", filePath, os.FileMode(windowsMask))
+
+	return fmt.Sprintf("(%s|%s)", linuxOutput, windowsOutput)
+}