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// Copyright 2019 The gVisor Authors.
//
// 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 integration
import (
"strings"
"testing"
"gvisor.dev/gvisor/pkg/test/dockerutil"
)
// Test that UDS can be created using overlay when parent directory is in lower
// layer only (b/134090485).
//
// Prerequisite: the directory where the socket file is created must not have
// been open for write before bind(2) is called.
func TestBindOverlay(t *testing.T) {
d := dockerutil.MakeDocker(t)
defer d.CleanUp()
// Run the container.
got, err := d.Run(dockerutil.RunOpts{
Image: "basic/ubuntu",
}, "bash", "-c", "nc -l -U /var/run/sock & p=$! && sleep 1 && echo foobar-asdf | nc -U /var/run/sock && wait $p")
if err != nil {
t.Fatalf("docker run failed: %v", err)
}
// Check the output contains what we want.
if want := "foobar-asdf"; !strings.Contains(got, want) {
t.Fatalf("docker run output is missing %q: %s", want, got)
}
}
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