If nsswitch.conf does not exist, create it with the default settings.

The reason for doing this is that (at least some) 4.x binaries are very
unhappy if host.conf does not exist, and if we create host.conf but not
nsswitch.conf, nsswitch.conf will be created at the next reboot, so it
is better to create a correct nsswitch.conf right away.

etc/rc.d/nsswitch

@@ -54,6 +54,21 @@ convert_host_conf()
         }' < $host_conf > $nsswitch_conf
 }
 
+generate_nsswitch_conf()
+{
+    nsswitch_conf=$1; shift;
+
+    cat >$nsswitch_conf <<EOF
+group: compat
+group_compat: nis
+hosts: dns files
+networks: files
+passwd: compat
+passwd_compat: nis
+shells: files
+EOF
+}
+
 generate_host_conf()
 {
     nsswitch_conf=$1; shift;
@@ -87,13 +102,6 @@ END {
 
 nsswitch_start()
 {
-	# Generate host.conf for compatibility
-	#
-	if [ -f "/etc/nsswitch.conf" ]; then
-		echo 'Generating host.conf.'
-		generate_host_conf /etc/nsswitch.conf /etc/host.conf
-	fi
-
 	# Convert host.conf to nsswitch.conf if necessary
 	#
 	if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
@@ -102,6 +110,21 @@ nsswitch_start()
 		echo '  /etc/nsswitch.conf will be created for you'
 		convert_host_conf /etc/host.conf /etc/nsswitch.conf
 	fi
+
+	# Generate default nsswitch.conf if none exists
+	#
+	if [ ! -f "/etc/nsswitch.conf" ]; then
+		echo 'Generating nsswitch.conf.'
+		generate_nsswitch_conf /etc/nsswitch.conf
+	fi
+
+	# Generate host.conf for compatibility
+	#
+	if [ ! -f "/etc/host.conf" ]; then
+		echo 'Generating host.conf.'
+		generate_host_conf /etc/nsswitch.conf /etc/host.conf
+	fi
+
 }
 
 load_rc_config $name