@@ -28,6 +28,12 @@ var (

 	// isLocalDaemon is true if the daemon under test is on the same

 	// host as the CLI.

 	isLocalDaemon bool

+

+	// daemonPlatform is held globally so that tests can make intelligent

+	// decisions on how to configure themselves according to the platform

+	// of the daemon. This is initialised in docker_utils by sending

+	// a version call to the daemon and examining the response header.

+	daemonPlatform string

 )

 func init() {

@@ -23,6 +23,7 @@ import (

 	"github.com/docker/docker/api/types"

 	"github.com/docker/docker/opts"

+	"github.com/docker/docker/pkg/httputils"

 	"github.com/docker/docker/pkg/ioutils"

 	"github.com/docker/docker/pkg/stringutils"

 	"github.com/go-check/check"

@@ -463,6 +464,20 @@ func init() {

 			protectedImages[imgTag] = struct{}{}

 		}

 	}

+

+	// Obtain the daemon platform so that it can be used by tests to make

+	// intelligent decisions about how to configure themselves, and validate

+	// that the target platform is valid.

+	res, b, err := sockRequestRaw("GET", "/version", nil, "application/json")

+	defer b.Close()

+	if err != nil || res.StatusCode != http.StatusOK {

+		panic("Init failed to get version: " + err.Error() + " " + string(res.StatusCode))

+	}

+	svrHeader, _ := httputils.ParseServerHeader(res.Header.Get("Server"))

+	daemonPlatform = svrHeader.OS

+	if daemonPlatform != "linux" && daemonPlatform != "windows" {

+		panic("Cannot run tests against platform: " + daemonPlatform)

+	}

 }

 func deleteAllImages() error {