saving uncommitted changes in /etc prior to emerge run

init.d/root

@@ -0,0 +1,53 @@
+#!/sbin/runscript
+# Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
+# Released under the 2-clause BSD license.
+
+description="Mount the root fs read/write"
+
+depend()
+{
+	need fsck
+	keyword -jail -openvz -prefix -vserver -lxc
+}
+
+start()
+{
+	case ",$(fstabinfo -o /)," in
+		*,ro,*)
+		;;
+		*)
+			# Check if the rootfs isn't already writable.
+			if checkpath -W /; then
+				rm -f /fastboot /forcefsck
+			else
+				ebegin "Remounting root filesystem read/write"
+				case "$RC_UNAME" in
+					Linux)
+						mount -n -o remount,rw /
+					;;
+					*)
+						mount -u -o rw /
+					;;
+				esac
+				eend $? "Root filesystem could not be mounted read/write"
+				if [ $?  -eq 0 ]; then
+					rm -f /fastboot /forcefsck
+				fi
+			fi
+		;;
+	esac
+
+	ebegin "Remounting filesystems"
+	local mountpoint
+	for mountpoint in $(fstabinfo); do
+		case "${mountpoint}" in
+			/)
+			;;
+			/*)
+				mountinfo -q "${mountpoint}" && \
+					fstabinfo --remount "${mountpoint}"
+			;;
+		esac
+	done
+	eend 0
+}