container: do not create .containerenv with -v SRC:/run

if /run is on a volume do not create the file /run/.containerenv as it
would leak outside of the container.

Closes: https://github.com/containers/podman/issues/14577

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

2 files changed, 26 insertions, 1 deletions

diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index 41c0ac595..eafe3d75e 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -2249,8 +2249,19 @@ func (c *Container) makeBindMounts() error {
 		}
 	}
 
+	_, hasRunContainerenv := c.state.BindMounts["/run/.containerenv"]
+	if !hasRunContainerenv {
+		// check in the spec mounts
+		for _, m := range c.config.Spec.Mounts {
+			if m.Destination == "/run/.containerenv" || m.Destination == "/run" {
+				hasRunContainerenv = true
+				break
+			}
+		}
+	}
+
 	// Make .containerenv if it does not exist
-	if _, ok := c.state.BindMounts["/run/.containerenv"]; !ok {
+	if !hasRunContainerenv {
 		containerenv := c.runtime.graphRootMountedFlag(c.config.Spec.Mounts)
 		isRootless := 0
 		if rootless.IsRootless() {
diff --git a/test/e2e/run_volume_test.go b/test/e2e/run_volume_test.go
index 1c0480407..f31e62e42 100644
--- a/test/e2e/run_volume_test.go
+++ b/test/e2e/run_volume_test.go
@@ -908,6 +908,20 @@ USER testuser`, fedoraMinimal)
 		Expect(session.OutputToString()).To(Equal(perms))
 	})
 
+	It("podman run with -v $SRC:/run does not create /run/.containerenv", func() {
+		mountSrc := filepath.Join(podmanTest.TempDir, "vol-test1")
+		err := os.MkdirAll(mountSrc, 0755)
+		Expect(err).To(BeNil())
+
+		session := podmanTest.Podman([]string{"run", "-v", mountSrc + ":/run", ALPINE, "true"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+
+		// the file should not have been created
+		_, err = os.Stat(filepath.Join(mountSrc, ".containerenv"))
+		Expect(err).To(Not(BeNil()))
+	})
+
 	It("podman volume with uid and gid works", func() {
 		volName := "testVol"
 		volCreate := podmanTest.Podman([]string{"volume", "create", "--opt", "o=uid=1000", volName})