sndiod: Hide "hardware" device's server.device control.

If sndiod is using another sndiod instance instead of the bare
hardware, then it must disable the underlying server.device
control to avoid conflicts with its own server.device control.

diff --git a/usr.bin/sndiod/dev.c b/usr.bin/sndiod/dev.c
index a5fc85e..eaa29fb 100644 (file)
--- a/usr.bin/sndiod/dev.c
+++ b/usr.bin/sndiod/dev.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: dev.c,v 1.113 2024/05/06 05:37:26 ratchov Exp $       */
+/*     $OpenBSD: dev.c,v 1.114 2024/05/24 15:01:53 ratchov Exp $       */
 /*
  * Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org>
  *
@@ -2290,6 +2290,14 @@ ctlslot_visible(struct ctlslot *s, struct ctl *c)
                return 1;
        switch (c->scope) {
        case CTL_HW:
+               /*
+                * Disable hardware's server.device control as its
+                * replaced by sndiod's one
+                */
+               if (strcmp(c->node0.name, "server") == 0 &&
+                   strcmp(c->func, "device") == 0)
+                       return 0;
+               /* FALLTHROUHG */
        case CTL_DEV_MASTER:
                return (s->opt->dev == c->u.any.arg0);
        case CTL_OPT_DEV: