From d2b10320f08c5ea24be9ccdabd470fd8dcb308fe Mon Sep 17 00:00:00 2001
From: yokota <yokota@FreeBSD.org>
Date: Sat, 28 Aug 1999 02:39:10 +0000
Subject: - Handle the signal SIGTERM. - Slightly rearrange VGLCheckSwitch() to
 ensure the display content   will be correctly restored when switching back
 to the vty where   the vgl program is running. - VGLEnd() should clear the
 screen only when the vty is in the   foreground.

Discussed with: sos
---
 lib/libvgl/main.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

(limited to 'lib')

diff --git a/lib/libvgl/main.c b/lib/libvgl/main.c
index 3e0a512..fc13f46 100644
--- a/lib/libvgl/main.c
+++ b/lib/libvgl/main.c
@@ -54,13 +54,11 @@ struct vt_mode smode;
 
   if (!VGLInitDone)
     return;
-/*
-  while (!VGLOnDisplay) pause(); 
-  VGLCheckSwitch();;
-*/
-  outb(0x3c4, 0x02);
-  outb(0x3c5, 0x0f);
-  bzero(VGLMem, 64*1024);
+  if (VGLOnDisplay && !VGLSwitchPending) {
+    outb(0x3c4, 0x02);
+    outb(0x3c5, 0x0f);
+    bzero(VGLMem, 64*1024);
+  }
   if (VGLOldMode >= M_VESA_BASE) {
     /* ugly, but necessary */
     ioctl(0, _IO('V', VGLOldMode - M_VESA_BASE), 0);
@@ -110,6 +108,7 @@ VGLInit(int mode)
 
   signal(SIGUSR1, VGLSwitch);
   signal(SIGINT, VGLAbort);
+  signal(SIGTERM, VGLAbort);
   signal(SIGSEGV, VGLAbort);
   signal(SIGBUS, VGLAbort);
 
@@ -192,7 +191,7 @@ VGLInit(int mode)
 void
 VGLCheckSwitch()
 {
-  if (VGLSwitchPending) {
+  while (VGLSwitchPending) {
     int i;
 
     VGLSwitchPending = 0;
@@ -236,8 +235,8 @@ VGLCheckSwitch()
       ioctl(0, VT_RELDISP, VT_TRUE);
       VGLDisplay->Bitmap = VGLBuf;
       VGLDisplay->Type = MEMBUF;
+      while (!VGLOnDisplay) pause();
     }
   }
-  while (!VGLOnDisplay) pause();
 }
   
-- 
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