saving uncommitted changes in /etc prior to emerge run

init.d/swap

@@ -0,0 +1,36 @@
+#!/sbin/runscript
+# Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
+# Released under the 2-clause BSD license.
+
+depend()
+{
+	before localmount
+	keyword -jail -openvz -prefix -vserver -lxc
+}
+
+start()
+{
+	ebegin "Activating swap devices"
+	case "$RC_UNAME" in
+		Linux)		swapon -a -e >/dev/null;;
+		NetBSD|OpenBSD) swapctl -A -t noblk >/dev/null;;
+		*)		swapon -a >/dev/null;;
+	esac
+	eend 0 # If swapon has nothing todo it errors, so always return 0
+}
+
+stop()
+{
+	ebegin "Deactivating swap devices"
+
+	# Try to unmount all tmpfs filesystems not in use, else a deadlock may
+	# occur. As $RC_SVCDIR may also be tmpfs we cd to it to lock it
+	cd "$RC_SVCDIR"
+	umount -a -t tmpfs 2>/dev/null
+
+	case "$RC_UNAME" in
+		NetBSD|OpenBSD)	swapctl -U -t noblk >/dev/null;;
+		*)		swapoff -a >/dev/null;;
+	esac
+	eend 0
+}