add mounts validate in runtimetest; using mount package in docker

Signed-off-by: liang chenye <liangchenye@huawei.com>

cmd/runtimetest/main.go

@@ -11,6 +11,7 @@ import (
 	"syscall"
 
 	"github.com/Sirupsen/logrus"
+	"github.com/docker/docker/pkg/mount"
 	rspec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/syndtr/gocapability/capability"
 )
@@ -191,6 +192,61 @@ func validateSysctls(spec *rspec.Spec) error {
 	return nil
 }
 
+func mountMatch(specMount rspec.Mount, sysMount rspec.Mount) error {
+	if specMount.Destination != sysMount.Destination {
+		return fmt.Errorf("mount destination expected: %v, actual: %v", specMount.Destination, sysMount.Destination)
+	}
+
+	if specMount.Type != sysMount.Type {
+		return fmt.Errorf("mount %v type expected: %v, actual: %v", specMount.Destination, specMount.Type, sysMount.Type)
+	}
+
+	if specMount.Source != sysMount.Source {
+		return fmt.Errorf("mount %v source expected: %v, actual: %v", specMount.Destination, specMount.Source, sysMount.Source)
+	}
+
+	optMap := make(map[string]bool)
+	for _, opt := range sysMount.Options {
+		optMap[opt] = true
+	}
+	for _, option := range specMount.Options {
+		if _, ok := optMap[option]; !ok {
+			return fmt.Errorf("mount %v option %v does not exist", specMount.Destination, option)
+		}
+	}
+
+	return nil
+}
+
+func validateMounts(spec *rspec.Spec) error {
+	fmt.Println("validating mounts")
+	infos, err := mount.GetMounts()
+	if err != nil {
+		return err
+	}
+
+	mountsMap := make(map[string]rspec.Mount)
+	for _, info := range infos {
+		mountsMap[info.Mountpoint] = rspec.Mount{
+			Destination: info.Mountpoint,
+			Type:        info.Fstype,
+			Source:      info.Source,
+			Options:     append(strings.Split(info.Opts, ","), strings.Split(info.VfsOpts, ",")...)}
+	}
+
+	for _, specMount := range spec.Mounts {
+		if sysMount, ok := mountsMap[specMount.Destination]; ok {
+			if err := mountMatch(specMount, sysMount); err != nil {
+				return err
+			}
+		} else {
+			return fmt.Errorf("Expected mount %v does not exist", specMount.Destination)
+		}
+	}
+
+	return nil
+}
+
 func main() {
 	spec, err := loadSpecConfig()
 	if err != nil {
@@ -203,6 +259,7 @@ func main() {
 		validateHostname,
 		validateRlimits,
 		validateSysctls,
+		validateMounts,
 	}
 
 	for _, v := range validations {