test: fix exec preserve-fds test

it specifies a fd is passed down but we are not really doing it, and
it triggers the wrong fd to be closed by Podman after the OCI runtime
invocation.

Closes: https://github.com/containers/libpod/issues/5769

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

test/e2e/exec_test.go

@@ -252,7 +252,13 @@ var _ = Describe("Podman exec", func() {
 		setup.WaitWithDefaultTimeout()
 		Expect(setup.ExitCode()).To(Equal(0))
 
-		session := podmanTest.Podman([]string{"exec", "--preserve-fds", "1", "test1", "ls"})
+		devNull, err := os.Open("/dev/null")
+		Expect(err).To(BeNil())
+		defer devNull.Close()
+		files := []*os.File{
+			devNull,
+		}
+		session := podmanTest.PodmanExtraFiles([]string{"exec", "--preserve-fds", "1", "test1", "ls"}, files)
 		session.WaitWithDefaultTimeout()
 		Expect(session.ExitCode()).To(Equal(0))
 	})

test/e2e/libpod_suite_remoteclient_test.go

@@ -34,6 +34,12 @@ func (p *PodmanTestIntegration) Podman(args []string) *PodmanSessionIntegration
 	return &PodmanSessionIntegration{podmanSession}
 }
 
+// PodmanExtraFiles is the exec call to podman on the filesystem and passes down extra files
+func (p *PodmanTestIntegration) PodmanExtraFiles(args []string, extraFiles []*os.File) *PodmanSessionIntegration {
+	podmanSession := p.PodmanAsUserBase(args, 0, 0, "", nil, false, false, nil, extraFiles)
+	return &PodmanSessionIntegration{podmanSession}
+}
+
 // PodmanNoCache calls podman with out adding the imagecache
 func (p *PodmanTestIntegration) PodmanNoCache(args []string) *PodmanSessionIntegration {
 	podmanSession := p.PodmanBase(args, false, true)

test/e2e/libpod_suite_test.go

@@ -27,6 +27,12 @@ func (p *PodmanTestIntegration) Podman(args []string) *PodmanSessionIntegration
 	return &PodmanSessionIntegration{podmanSession}
 }
 
+// PodmanExtraFiles is the exec call to podman on the filesystem and passes down extra files
+func (p *PodmanTestIntegration) PodmanExtraFiles(args []string, extraFiles []*os.File) *PodmanSessionIntegration {
+	podmanSession := p.PodmanAsUserBase(args, 0, 0, "", nil, false, false, extraFiles)
+	return &PodmanSessionIntegration{podmanSession}
+}
+
 // PodmanNoCache calls the podman command with no configured imagecache
 func (p *PodmanTestIntegration) PodmanNoCache(args []string) *PodmanSessionIntegration {
 	podmanSession := p.PodmanBase(args, false, true)
@@ -42,7 +48,7 @@ func (p *PodmanTestIntegration) PodmanNoEvents(args []string) *PodmanSessionInte
 
 // PodmanAsUser is the exec call to podman on the filesystem with the specified uid/gid and environment
 func (p *PodmanTestIntegration) PodmanAsUser(args []string, uid, gid uint32, cwd string, env []string) *PodmanSessionIntegration {
-	podmanSession := p.PodmanAsUserBase(args, uid, gid, cwd, env, false, false)
+	podmanSession := p.PodmanAsUserBase(args, uid, gid, cwd, env, false, false, nil)
 	return &PodmanSessionIntegration{podmanSession}
 }
 

test/utils/podmantest_test.go

@@ -23,7 +23,7 @@ var _ = Describe("PodmanTest test", func() {
 		FakeOutputs["check"] = []string{"check"}
 		os.Setenv("HOOK_OPTION", "hook_option")
 		env := os.Environ()
-		session := podmanTest.PodmanAsUserBase([]string{"check"}, 1000, 1000, "", env, true, false)
+		session := podmanTest.PodmanAsUserBase([]string{"check"}, 1000, 1000, "", env, true, false, nil)
 		os.Unsetenv("HOOK_OPTION")
 		session.WaitWithDefaultTimeout()
 		Expect(session.Command.Process).ShouldNot(BeNil())

test/utils/utils.go

@@ -65,7 +65,7 @@ func (p *PodmanTest) MakeOptions(args []string, noEvents, noCache bool) []string
 
 // PodmanAsUserBase exec podman as user. uid and gid is set for credentials usage. env is used
 // to record the env for debugging
-func (p *PodmanTest) PodmanAsUserBase(args []string, uid, gid uint32, cwd string, env []string, noEvents, noCache bool) *PodmanSession {
+func (p *PodmanTest) PodmanAsUserBase(args []string, uid, gid uint32, cwd string, env []string, noEvents, noCache bool, extraFiles []*os.File) *PodmanSession {
 	var command *exec.Cmd
 	podmanOptions := p.MakeOptions(args, noEvents, noCache)
 	podmanBinary := p.PodmanBinary
@@ -93,6 +93,8 @@ func (p *PodmanTest) PodmanAsUserBase(args []string, uid, gid uint32, cwd string
 		command.Dir = cwd
 	}
 
+	command.ExtraFiles = extraFiles
+
 	session, err := gexec.Start(command, GinkgoWriter, GinkgoWriter)
 	if err != nil {
 		Fail(fmt.Sprintf("unable to run podman command: %s\n%v", strings.Join(podmanOptions, " "), err))
@@ -102,7 +104,7 @@ func (p *PodmanTest) PodmanAsUserBase(args []string, uid, gid uint32, cwd string
 
 // PodmanBase exec podman with default env.
 func (p *PodmanTest) PodmanBase(args []string, noEvents, noCache bool) *PodmanSession {
-	return p.PodmanAsUserBase(args, 0, 0, "", nil, noEvents, noCache)
+	return p.PodmanAsUserBase(args, 0, 0, "", nil, noEvents, noCache, nil)
 }
 
 // WaitForContainer waits on a started container