Resolve to legacy by default in nvidia-container-runtime-hook

Signed-off-by: Evan Lezar <elezar@nvidia.com>

cmd/nvidia-container-runtime-hook/hook_config.go

@@ -140,6 +140,7 @@ func (c *hookConfig) assertModeIsLegacy() error {
 	mr := info.NewRuntimeModeResolver(
 		info.WithLogger(&logInterceptor{}),
 		info.WithImage(&c.containerConfig.Image),
+		info.WithDefaultMode(info.RuntimeModeLegacy),
 	)
 
 	mode := mr.ResolveRuntimeMode(c.NVIDIAContainerRuntimeConfig.Mode)

internal/info/auto.go

@@ -42,10 +42,17 @@ type modeResolver struct {
 	// TODO: This only needs to consider the requested devices.
 	image             *image.CUDA
 	propertyExtractor info.PropertyExtractor
+	defaultMode       RuntimeMode
 }
 
 type Option func(*modeResolver)
 
+func WithDefaultMode(defaultMode RuntimeMode) Option {
+	return func(mr *modeResolver) {
+		mr.defaultMode = defaultMode
+	}
+}
+
 func WithLogger(logger logger.Interface) Option {
 	return func(mr *modeResolver) {
 		mr.logger = logger
@@ -65,7 +72,9 @@ func WithPropertyExtractor(propertyExtractor info.PropertyExtractor) Option {
 }
 
 func NewRuntimeModeResolver(opts ...Option) RuntimeModeResolver {
-	r := &modeResolver{}
+	r := &modeResolver{
+		defaultMode: RuntimeModeJitCDI,
+	}
 	for _, opt := range opts {
 		opt(r)
 	}
@@ -106,9 +115,9 @@ func (m *modeResolver) ResolveRuntimeMode(mode string) (rmode RuntimeMode) {
 
 	switch nvinfo.ResolvePlatform() {
 	case info.PlatformNVML, info.PlatformWSL:
-		return RuntimeModeJitCDI
+		return m.defaultMode
 	case info.PlatformTegra:
 		return RuntimeModeCSV
 	}
-	return RuntimeModeJitCDI
+	return m.defaultMode
 }