pkg/fileutil: improve CopyFile

- check Close error
- preserve modification time

1 files changed, 10 insertions, 0 deletions

diff --git a/pkg/fileutil/fileutil.go b/pkg/fileutil/fileutil.go
index c244204a9..eae069e01 100644
--- a/pkg/fileutil/fileutil.go
+++ b/pkg/fileutil/fileutil.go
@@ -21,6 +21,10 @@ func CopyFile(oldFile, newFile string) error {
 		return err
 	}
 	defer oldf.Close()
+	stat, err := oldf.Stat()
+	if err != nil {
+		return err
+	}
 	newf, err := os.Create(newFile)
 	if err != nil {
 		return err
@@ -30,6 +34,12 @@ func CopyFile(oldFile, newFile string) error {
 	if err != nil {
 		return err
 	}
+	if err := newf.Close(); err != nil {
+		return err
+	}
+	if err := os.Chtimes(newFile, stat.ModTime(), stat.ModTime()); err != nil {
+		return err
+	}
 	return nil
 }