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Allow vt(4) to disable terminal bell with sysctl kern.vt.bell_enable=0,

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similar as syscons(4) do.

Submitted by:	Tiwei Bie <btw@mail.ustc.edu.cn>
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Aleksandr Rybalko 2014-10-07 18:47:53 +00:00
parent c896236487
commit c32f462f28
1 changed files with 7 additions and 0 deletions
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7
sys/dev/vt/vt_core.c
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@ -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 param)
{
u_int freq, period;
if (!vt_enable_bell)
return;
if ((param == 0) || ((param & 0xffff) == 0)) {
vtterm_bell(tm);
return;