Merge pull request #6601 from zhangguanzhang/podman-cp-dir

fix podman cp can create an extra directory when the source is the container's root directory

test/e2e/cp_test.go

@@ -296,4 +296,42 @@ var _ = Describe("Podman cp", func() {
 
 		os.Remove("testfile1")
 	})
+	It("podman cp the root directory from the ctr to an existing directory on the host ", func() {
+		imgName := "test-cp-root-dir:latest"
+		DockerfileName := "Dockerfile.test-cp-root-dir"
+		ctrName := "test-container-cp-root"
+
+		session := podmanTest.PodmanNoCache([]string{"build", "-f", "build/" + DockerfileName, "-t", imgName, "build/"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+
+		testDirPath := filepath.Join(podmanTest.RunRoot, "TestDirForCp")
+
+		session = podmanTest.Podman([]string{"create", "--name", ctrName, imgName, "dummy"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+
+		err := os.Mkdir(testDirPath, 0755)
+		Expect(err).To(BeNil())
+		defer os.RemoveAll(testDirPath)
+
+		// Copy the root directory of the container to an existing directory
+		session = podmanTest.Podman([]string{"cp", ctrName + ":/", testDirPath})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+
+		// The file should be in the directory,
+		// not one layer too much of the directory called merged
+		checkFile := filepath.Join(testDirPath, DockerfileName)
+		_, err = os.Stat(checkFile)
+		Expect(err).To(BeNil())
+
+		session = podmanTest.Podman([]string{"container", "rm", ctrName})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+
+		session = podmanTest.PodmanNoCache([]string{"rmi", "-f", imgName})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+	})
 })