Date: Sun, 5 Oct 2014 12:27:53 +0800 From: Tiwei Bie <btw@mail.ustc.edu.cn> To: freebsd-hackers@freebsd.org Cc: Tiwei Bie <btw@mail.ustc.edu.cn> Subject: [PATCH] hw.syscons.bell sysctl for vt (newcons) Message-ID: <1412483273-36665-1-git-send-email-btw@mail.ustc.edu.cn>
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Hi All,
I think the hw.syscons.bell sysctl provided by syscons is a very convenient method
to disable the sound alert in FreeBSD. But I haven't found the similar interface
in vt. So I have written a patch to implement the sysctl 'kern.vt.enable_bell'
which is similar to 'hw.syscons.bell' for vt.
---
sys/dev/vt/vt_core.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/sys/dev/vt/vt_core.c b/sys/dev/vt/vt_core.c
index 2dd7e3f..a8cdedb 100644
--- a/sys/dev/vt/vt_core.c
+++ b/sys/dev/vt/vt_core.c
@@ -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;
--
2.1.0
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