Author: ray
Date: Tue Oct 7 18:47:53 2014
New Revision: 272715
URL: https://svnweb.freebsd.org/changeset/base/272715
Log:
Allow vt(4) to disable terminal bell with `sysctl kern.vt.bell_enable=0`,
similar as syscons(4) do.
Submitted by: Tiwei Bie <b...@mail.ustc.edu.cn>
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/dev/vt/vt_core.c
Modified: head/sys/dev/vt/vt_core.c
==============================================================================
--- head/sys/dev/vt/vt_core.c Tue Oct 7 18:22:05 2014 (r272714)
+++ head/sys/dev/vt/vt_core.c Tue Oct 7 18:47:53 2014 (r272715)
@@ -120,6 +120,7 @@ const struct terminal_class vt_termclass
static SYSCTL_NODE(_kern, OID_AUTO, vt, CTLFLAG_RD, 0, "vt(9) parameters");
VT_SYSCTL_INT(enable_altgr, 1, "Enable AltGr key (Do not assume R.Alt as
Alt)");
+VT_SYSCTL_INT(enable_bell, 1, "Enable bell");
VT_SYSCTL_INT(debug, 0, "vt(9) debug level");
VT_SYSCTL_INT(deadtimer, 15, "Time to wait busy process in VT_PROCESS mode");
VT_SYSCTL_INT(suspendswitch, 1, "Switch to VT0 before suspend");
@@ -904,6 +905,9 @@ vtterm_bell(struct terminal *tm)
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
+ if (!vt_enable_bell)
+ return;
+
if (vd->vd_flags & VDF_QUIET_BELL)
return;
@@ -915,6 +919,9 @@ vtterm_beep(struct terminal *tm, u_int p
{
u_int freq, period;
+ if (!vt_enable_bell)
+ return;
+
if ((param == 0) || ((param & 0xffff) == 0)) {
vtterm_bell(tm);
return;
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