Merge pull request #24124 from mheon/validate_bind_propagation

Validate the bind-propagation option to `--mount`

pkg/specgenutil/volumes.go

@@ -272,6 +272,12 @@ func parseMountOptions(mountType string, args []string) (*spec.Mount, error) {
 			if !hasValue {
 				return nil, fmt.Errorf("%v: %w", name, errOptionArg)
 			}
+			switch value {
+			case "shared", "rshared", "private", "rprivate", "slave", "rslave", "unbindable", "runbindable":
+				// Do nothing, sane value
+			default:
+				return nil, fmt.Errorf("invalid value %q", arg)
+			}
 			mnt.Options = append(mnt.Options, value)
 		case "consistency":
 			// Often used on MACs and mistakenly on Linux platforms.

test/e2e/run_volume_test.go

@@ -122,6 +122,10 @@ var _ = Describe("Podman run with volumes", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).To(ExitWithError(125, `"notmpcopyup" option not supported for "bind" mount types`))
 
+		session = podmanTest.Podman([]string{"run", "--rm", "--mount", "type=bind,src=/tmp,target=/tmp,bind-propagation=fake", ALPINE, "true"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).To(ExitWithError(125, `invalid value "bind-propagation=fake"`))
+
 		session = podmanTest.Podman([]string{"run", "--rm", "--mount", "type=tmpfs,target=/etc/ssl,notmpcopyup", ALPINE, "ls", "/etc/ssl"})
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(ExitCleanly())