From 452d07c1ce31c128e5bf4b42fe862bd7b8b9f4e1 Mon Sep 17 00:00:00 2001
From: Mark Murray <markm@FreeBSD.org>
Date: Sun, 10 Sep 2000 14:31:40 +0000
Subject: [PATCH] Provide keyboard entropy harvesting for PCVT users.

---
 sys/i386/isa/pcvt/pcvt_hdr.h | 1 +
 sys/i386/isa/pcvt/pcvt_kbd.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/sys/i386/isa/pcvt/pcvt_hdr.h b/sys/i386/isa/pcvt/pcvt_hdr.h
index e58520abfd1..2078f5f2ac7 100644
--- a/sys/i386/isa/pcvt/pcvt_hdr.h
+++ b/sys/i386/isa/pcvt/pcvt_hdr.h
@@ -59,6 +59,7 @@
 #include <sys/uio.h>
 #include <sys/callout.h>
 #include <sys/kernel.h>
+#include <sys/random.h>
 #include <sys/syslog.h>
 #include <sys/malloc.h>
 #include <sys/time.h>
diff --git a/sys/i386/isa/pcvt/pcvt_kbd.c b/sys/i386/isa/pcvt/pcvt_kbd.c
index f7f946d697d..d1041964390 100644
--- a/sys/i386/isa/pcvt/pcvt_kbd.c
+++ b/sys/i386/isa/pcvt/pcvt_kbd.c
@@ -751,6 +751,8 @@ loop:
 	{
 		keybuf[0] = dt;
 
+		random_harvest(keybuf, sizeof(keybuf), 1, 0, RANDOM_KEYBOARD);
+
 		return ((u_char *)keybuf);
 	}
 
@@ -825,6 +827,8 @@ loop:
 	/* got a normal scan key */
 regular:
 
+	random_harvest(&dt, sizeof(dt), 1, 0, RANDOM_KEYBOARD);
+
 #if PCVT_SCANSET == 1
 	kbd_status.breakseen = dt & 0x80 ? 1 : 0;
 	dt &= 0x7f;