hst: expose scheduling policy

This is primarily useful for poorly written music players for now.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/outcome.go

@@ -99,12 +99,17 @@ func newOutcomeState(k syscallDispatcher, msg message.Msg, id *hst.ID, config *h
 		Shim: &shimParams{
 			PrivPID: k.getpid(),
 			Verbose: msg.IsVerbose(),
+
+			SchedPolicy: config.SchedPolicy,
 		},
 
-		ID:        id,
-		Identity:  config.Identity,
-		UserID:    hsu.MustID(msg),
-		Paths:     env.CopyPathsFunc(k.fatalf, k.tempdir, func(key string) string { v, _ := k.lookupEnv(key); return v }),
+		ID:       id,
+		Identity: config.Identity,
+		UserID:   hsu.MustID(msg),
+		Paths: env.CopyPathsFunc(k.fatalf, k.tempdir, func(key string) string {
+			v, _ := k.lookupEnv(key)
+			return v
+		}),
 		Container: config.Container,
 	}
 

internal/outcome/shim.go

@@ -274,6 +274,7 @@ func shimEntrypoint(k syscallDispatcher) {
 	cancelContainer.Store(&stop)
 	sp := shimPrivate{k: k, id: state.id}
 	z := container.New(ctx, msg)
+	z.SchedPolicy = state.Shim.SchedPolicy
 	z.Params = *stateParams.params
 	z.Stdin, z.Stdout, z.Stderr = os.Stdin, os.Stdout, os.Stderr