Add test that volume can be mounted on top of a symlink

PiperOrigin-RevId: 220588094
Change-Id: I18915e892ceac86eac1f89ebcadffb4fdf8d0cf6

2 files changed, 33 insertions, 0 deletions

diff --git a/runsc/test/root/testdata/BUILD b/runsc/test/root/testdata/BUILD
index a22635129..6c9fe0aea 100644
--- a/runsc/test/root/testdata/BUILD
+++ b/runsc/test/root/testdata/BUILD
@@ -5,6 +5,7 @@ package(licenses = ["notice"])  # Apache 2.0
 go_library(
     name = "testdata",
     srcs = [
+        "busybox.go",
         "containerd_config.go",
         "httpd.go",
         "httpd_mount_paths.go",
diff --git a/runsc/test/root/testdata/busybox.go b/runsc/test/root/testdata/busybox.go
new file mode 100644
index 000000000..544571c63
--- /dev/null
+++ b/runsc/test/root/testdata/busybox.go
@@ -0,0 +1,32 @@
+// Copyright 2018 Google LLC
+//
+// 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 testdata
+
+// MountOverSymlink is a JSON config for a container that /etc/resolv.conf is a
+// symlink to /tmp/resolv.conf.
+var MountOverSymlink = `
+{
+        "metadata": {
+                "name": "busybox"
+        },
+        "image": {
+                "image": "k8s.gcr.io/busybox"
+        },
+        "command": [
+                "sleep",
+                "1000"
+        ]
+}
+`