don't restrict filters in docker images

Signed-off-by: Victor Vieux <vieux@docker.com>

api/client/commands.go

@@ -49,10 +49,6 @@ const (
 	tarHeaderSize = 512
 )
 
-var (
-	acceptedImageFilterTags = map[string]struct{}{"dangling": {}}
-)
-
 func (cli *DockerCli) CmdHelp(args ...string) error {
 	if len(args) > 1 {
 		method, exists := cli.getMethod(args[:2]...)
@@ -1331,12 +1327,6 @@ func (cli *DockerCli) CmdImages(args ...string) error {
 		}
 	}
 
-	for name := range imageFilterArgs {
-		if _, ok := acceptedImageFilterTags[name]; !ok {
-			return fmt.Errorf("Invalid filter '%s'", name)
-		}
-	}
-
 	matchName := cmd.Arg(0)
 	// FIXME: --viz and --tree are deprecated. Remove them in a future version.
 	if *flViz || *flTree {

integration-cli/docker_cli_images_test.go

@@ -67,16 +67,6 @@ func TestImagesOrderedByCreationDate(t *testing.T) {
 	logDone("images - ordering by creation date")
 }
 
-func TestImagesErrorWithInvalidFilterNameTest(t *testing.T) {
-	imagesCmd := exec.Command(dockerBinary, "images", "-f", "FOO=123")
-	out, _, err := runCommandWithOutput(imagesCmd)
-	if !strings.Contains(out, "Invalid filter") {
-		t.Fatalf("error should occur when listing images with invalid filter name FOO, %s, %v", out, err)
-	}
-
-	logDone("images - invalid filter name check working")
-}
-
 func TestImagesFilterWhiteSpaceTrimmingAndLowerCasingWorking(t *testing.T) {
 	imageName := "images_filter_test"
 	defer deleteAllContainers()