refactor and add test for bindmount

Signed-off-by: moricho <ikeda.morito@gmail.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/runsc/specutils/specutils.go b/runsc/specutils/specutils.go
index 837d5e238..202518b58 100644
--- a/runsc/specutils/specutils.go
+++ b/runsc/specutils/specutils.go
@@ -311,7 +311,19 @@ func capsFromNames(names []string, skipSet map[linux.Capability]struct{}) (auth.
 
 // Is9PMount returns true if the given mount can be mounted as an external gofer.
 func Is9PMount(m specs.Mount) bool {
-	return m.Type == "bind" && m.Source != "" && IsSupportedDevMount(m)
+	var isBind bool
+	switch m.Type {
+	case "bind":
+		isBind = true
+	default:
+		for _, opt := range m.Options {
+			if opt == "bind" || opt == "rbind" {
+				isBind = true
+				break
+			}
+		}
+	}
+	return isBind && m.Source != "" && IsSupportedDevMount(m)
 }
 
 // IsSupportedDevMount returns true if the mount is a supported /dev mount.