package integration import ( "fmt" "io/ioutil" "os" "path/filepath" . "github.com/containers/podman/v3/test/utils" . "github.com/onsi/ginkgo" . "github.com/onsi/gomega" . "github.com/onsi/gomega/gexec" ) func buildDataVolumeImage(pTest *PodmanTestIntegration, image, data, dest string) { // Create a dummy file for data volume dummyFile := filepath.Join(pTest.TempDir, data) err := ioutil.WriteFile(dummyFile, []byte(data), 0644) Expect(err).To(BeNil()) // Create a data volume container image but no CMD binary in it containerFile := fmt.Sprintf(`FROM scratch CMD doesnotexist.sh ADD %s %s/ VOLUME %s/`, data, dest, dest) pTest.BuildImage(containerFile, image, "false") } func createContainersConfFile(pTest *PodmanTestIntegration) { configPath := filepath.Join(pTest.TempDir, "containers.conf") containersConf := []byte("[containers]\nprepare_volume_on_create = true\n") err := ioutil.WriteFile(configPath, containersConf, os.ModePerm) Expect(err).To(BeNil()) // Set custom containers.conf file os.Setenv("CONTAINERS_CONF", configPath) if IsRemote() { pTest.RestartRemoteService() } } func checkDataVolumeContainer(pTest *PodmanTestIntegration, image, cont, dest, data string) { create := pTest.Podman([]string{"create", "--name", cont, image}) create.WaitWithDefaultTimeout() Expect(create).Should(Exit(0)) inspect := pTest.InspectContainer(cont) Expect(inspect).To(HaveLen(1)) Expect(inspect[0].Mounts).To(HaveLen(1)) Expect(inspect[0].Mounts[0].Destination).To(Equal(dest)) mntName, mntSource := inspect[0].Mounts[0].Name, inspect[0].Mounts[0].Source volList := pTest.Podman([]string{"volume", "list", "--quiet"}) volList.WaitWithDefaultTimeout() Expect(volList).Should(Exit(0)) Expect(volList.OutputToStringArray()).To(HaveLen(1)) Expect(volList.OutputToStringArray()[0]).To(Equal(mntName)) // Check the mount source directory files, err := ioutil.ReadDir(mntSource) Expect(err).To(BeNil()) if data == "" { Expect(files).To(BeEmpty()) } else { Expect(files).To(HaveLen(1)) Expect(files[0].Name()).To(Equal(data)) } } var _ = Describe("Podman create data volume", func() { var ( tempdir string err error podmanTest *PodmanTestIntegration ) BeforeEach(func() { tempdir, err = CreateTempDirInTempDir() if err != nil { os.Exit(1) } podmanTest = PodmanTestCreate(tempdir) podmanTest.Setup() podmanTest.SeedImages() }) AfterEach(func() { podmanTest.Cleanup() f := CurrentGinkgoTestDescription() processTestResult(f) os.Unsetenv("CONTAINERS_CONF") }) It("podman create with volume data copy turned off", func() { imgName, volData, volDest := "dataimg", "dummy", "/test" buildDataVolumeImage(podmanTest, imgName, volData, volDest) // Create a container with the default containers.conf and // check that the volume is not copied from the image. checkDataVolumeContainer(podmanTest, imgName, "ctr-nocopy", volDest, "") }) It("podman create with volume data copy turned on", func() { imgName, volData, volDest := "dataimg", "dummy", "/test" buildDataVolumeImage(podmanTest, imgName, volData, volDest) // Create a container with the custom containers.conf and // check that the volume is copied from the image. createContainersConfFile(podmanTest) checkDataVolumeContainer(podmanTest, imgName, "ctr-copy", volDest, volData) }) It("podman run with volume data copy turned on", func() { // Create a container with the custom containers.conf and // check that the container is run successfully createContainersConfFile(podmanTest) session := podmanTest.Podman([]string{"run", "--rm", ALPINE, "echo"}) session.WaitWithDefaultTimeout() Expect(session).Should(Exit(0)) }) })