Let rc and periodic infrastructure and newsyslog use the utmpx files.

etc/newsyslog.conf

@@ -33,6 +33,6 @@
 /var/log/ppp.log	root:network	640  3	   100	*     JC
 /var/log/security			600  10	   100	*     JC
 /var/log/sendmail.st			640  10	   *	168   B
+/var/log/utx.log			644  3	   *	@01T05 B
 /var/log/weekly.log			640  5	   1	$W6D0 JN
-/var/log/wtmp				644  3	   *	@01T05 B
 /var/log/xferlog			600  7	   100	*     JC

etc/periodic/monthly/200.accounting

@@ -15,7 +15,7 @@ oldmask=$(umask)
 umask 066
 case "$monthly_accounting_enable" in
     [Yy][Ee][Ss])
-	W=/var/log/wtmp
+	W=/var/log/utx.log
 	rc=0
 	remove=NO
 	if [ ! -f $W.0 ]

etc/rc.d/cleanvar

@@ -58,8 +58,8 @@ cleanvar_start ()
 {
 	if [ -d /var/run -a ! -f /var/run/clean_var ]; then
 		purgedir /var/run
-		# And an initial utmp file
-		(cd /var/run && cp /dev/null utmp && chmod 644 utmp)
+		# And an initial utmpx active session file
+		(cd /var/run && cp /dev/null utx.active && chmod 644 utx.active)
 		>/var/run/clean_var
 	fi
 	if [ -d /var/spool/lock -a ! -f /var/spool/lock/clean_var ]; then

etc/rc.d/var

@@ -98,12 +98,12 @@ case "${populate_var}" in
 	;;
 esac
 
-# Make sure we have /var/log/lastlog and /var/log/wtmp files
-if [ ! -f /var/log/lastlog ]; then
-	cp /dev/null /var/log/lastlog
-	chmod 644 /var/log/lastlog
+# Make sure we have /var/log/utx.lastlogin and /var/log/utx.log files
+if [ ! -f /var/log/utx.lastlogin ]; then
+	cp /dev/null /var/log/utx.lastlogin
+	chmod 644 /var/log/utx.lastlogin
 fi
-if [ ! -f /var/log/wtmp ]; then
-	cp /dev/null /var/log/wtmp
-	chmod 644 /var/log/wtmp
+if [ ! -f /var/log/utx.log ]; then
+	cp /dev/null /var/log/utx.log
+	chmod 644 /var/log/utx.log
 fi