1 files changed, 35 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/task_net.go b/pkg/sentry/kernel/task_net.go
new file mode 100644
index 000000000..4df2e53d3
--- /dev/null
+++ b/pkg/sentry/kernel/task_net.go
@@ -0,0 +1,35 @@
+// Copyright 2018 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package kernel
+
+import (
+	"gvisor.googlesource.com/gvisor/pkg/sentry/inet"
+)
+
+// IsNetworkNamespaced returns true if t is in a non-root network namespace.
+func (t *Task) IsNetworkNamespaced() bool {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	return t.netns
+}
+
+// NetworkContext returns the network stack used by the task. NetworkContext
+// may return nil if no network stack is available.
+func (t *Task) NetworkContext() inet.Stack {
+	if t.IsNetworkNamespaced() {
+		return nil
+	}
+	return t.k.networkStack
+}