1 files changed, 28 insertions, 1 deletions
diff --git a/modules/util/remove.go b/modules/util/remove.go
index f2bbbc30b9..2310436525 100644
--- a/modules/util/remove.go
+++ b/modules/util/remove.go
@@ -33,7 +33,7 @@ func Remove(name string) error {
 	return err
 }
 
-// RemoveAll removes the named file or (empty) directory with at most 5 attempts.Remove
+// RemoveAll removes the named file or (empty) directory with at most 5 attempts.
 func RemoveAll(name string) error {
 	var err error
 	for i := 0; i < 5; i++ {
@@ -55,3 +55,30 @@ func RemoveAll(name string) error {
 	}
 	return err
 }
+
+// Rename renames (moves) oldpath to newpath with at most 5 attempts.
+func Rename(oldpath, newpath string) error {
+	var err error
+	for i := 0; i < 5; i++ {
+		err = os.Rename(oldpath, newpath)
+		if err == nil {
+			break
+		}
+		unwrapped := err.(*os.PathError).Err
+		if unwrapped == syscall.EBUSY || unwrapped == syscall.ENOTEMPTY || unwrapped == syscall.EPERM || unwrapped == syscall.EMFILE || unwrapped == syscall.ENFILE {
+			// try again
+			<-time.After(100 * time.Millisecond)
+			continue
+		}
+
+		if i == 0 && os.IsNotExist(err) {
+			return err
+		}
+
+		if unwrapped == syscall.ENOENT {
+			// it's already gone
+			return nil
+		}
+	}
+	return err
+}