1 files changed, 15 insertions, 2 deletions
diff --git a/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go b/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go
index 42940d769..bab62bfce 100644
--- a/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go
+++ b/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go
@@ -19,8 +19,21 @@ func (fl *plan9FileLock) release() error {
 	return fl.f.Close()
 }
 
-func newFileLock(path string) (fl fileLock, err error) {
-	f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, os.ModeExclusive|0644)
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+	var (
+		flag int
+		perm os.FileMode
+	)
+	if readOnly {
+		flag = os.O_RDONLY
+	} else {
+		flag = os.O_RDWR
+		perm = os.ModeExclusive
+	}
+	f, err := os.OpenFile(path, flag, perm)
+	if os.IsNotExist(err) {
+		f, err = os.OpenFile(path, flag|os.O_CREATE, perm|0644)
+	}
 	if err != nil {
 		return
 	}