fix bug on checking hostpath type file

Author: dixudx

pkg/volume/hostpath/host_path.go

@@ -370,7 +370,11 @@ func (ftc *fileTypeChecker) IsFile() bool {
 	if !ftc.Exists() {
 		return false
 	}
-	return !ftc.IsDir()
+	pathType, err := ftc.hu.GetFileType(ftc.path)
+	if err != nil {
+		return false
+	}
+	return string(pathType) == string(v1.HostPathFile)
 }
 
 func (ftc *fileTypeChecker) MakeFile() error {

pkg/volume/hostpath/host_path_test.go

@@ -447,7 +447,7 @@ func TestOSFileTypeChecker(t *testing.T) {
 			if oftc.IsDir() {
 				t.Errorf("[%d: %q] expected socket file, got unexpected folder: %s", i, tc.name, path)
 			}
-			if !oftc.IsFile() {
+			if oftc.IsFile() {
 				t.Errorf("[%d: %q] expected socket file, got unexpected file: %s", i, tc.name, path)
 			}
 			if oftc.IsBlock() {
@@ -465,7 +465,7 @@ func TestOSFileTypeChecker(t *testing.T) {
 			if oftc.IsDir() {
 				t.Errorf("[%d: %q] expected character device, got unexpected folder: %s", i, tc.name, path)
 			}
-			if !oftc.IsFile() {
+			if oftc.IsFile() {
 				t.Errorf("[%d: %q] expected character device, got unexpected file: %s", i, tc.name, path)
 			}
 			if oftc.IsSocket() {
@@ -483,7 +483,7 @@ func TestOSFileTypeChecker(t *testing.T) {
 			if oftc.IsDir() {
 				t.Errorf("[%d: %q] expected block device, got unexpected folder: %s", i, tc.name, path)
 			}
-			if !oftc.IsFile() {
+			if oftc.IsFile() {
 				t.Errorf("[%d: %q] expected block device, got unexpected file: %s", i, tc.name, path)
 			}
 			if oftc.IsSocket() {