From e91afc1cda50cbcb8fffa3f52cc0f8c595a392a3 Mon Sep 17 00:00:00 2001
From: Devin Teske <dteske@FreeBSD.org>
Date: Tue, 11 Nov 2014 19:37:17 +0000
Subject: [PATCH] Default `bsdconfig timezone' and `tzsetup' to `-s' in a VM.

Recommended by:	cperciva
Reviewed by:	cperciva
Relnotes:	tzsetup and bsdconfig now assume that the "hardware" clock inside a VM is set to UTC
---
 usr.sbin/bsdconfig/timezone/timezone | 5 ++++-
 usr.sbin/tzsetup/tzsetup.c           | 9 +++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/bsdconfig/timezone/timezone b/usr.sbin/bsdconfig/timezone/timezone
index 0452230441b..66f2d789228 100755
--- a/usr.sbin/bsdconfig/timezone/timezone
+++ b/usr.sbin/bsdconfig/timezone/timezone
@@ -62,7 +62,7 @@ _PATH_WALL_CMOS_CLOCK="/etc/wall_cmos_clock"
 REALLYDOIT=1
 REINSTALL=
 USEDIALOG=1
-SKIPUTC=
+SKIPUTC= # See MAIN
 VERBOSE=
 TZ_OR_FAIL=
 CHROOTENV=
@@ -119,6 +119,9 @@ dialog_menu_main()
 
 ############################################################ MAIN
 
+# Skip initial question regarding UTC v. Wall-Clock time if run in VM
+[ "$( sysctl -n kern.vm_guest 2> /dev/null )" = "none" ] || SKIPUTC=1
+
 # Incorporate rc-file if it exists
 [ -f "$HOME/.bsdconfigrc" ] && f_include "$HOME/.bsdconfigrc"
 
diff --git a/usr.sbin/tzsetup/tzsetup.c b/usr.sbin/tzsetup/tzsetup.c
index cea8533d463..17502274385 100644
--- a/usr.sbin/tzsetup/tzsetup.c
+++ b/usr.sbin/tzsetup/tzsetup.c
@@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/queue.h>
 #include <sys/stat.h>
+#include <sys/sysctl.h>
 
 #include <dialog.h>
 
@@ -910,8 +911,16 @@ main(int argc, char **argv)
 {
 	char		title[64], prompt[128];
 	int		c, fd, rv, skiputc;
+        char		vm_guest[16] = "";
+        size_t		len = sizeof(vm_guest);
 
 	skiputc = 0;
+
+	/* Default skiputc to 1 for VM guests */
+        if (sysctlbyname("kern.vm_guest", vm_guest, &len, NULL, 0) == 0 &&
+	    strcmp(vm_guest, "none") != 0)
+                skiputc = 1;
+
 	while ((c = getopt(argc, argv, "C:nrs")) != -1) {
 		switch(c) {
 		case 'C':