saving uncommitted changes in /etc prior to emerge run

init.d/localmount

@@ -0,0 +1,87 @@
+#!/sbin/runscript
+# Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
+# Released under the 2-clause BSD license.
+
+description="Mounts disks and swap according to /etc/fstab."
+
+depend()
+{
+	need fsck
+	use lvm modules mtab
+	after lvm modules
+	keyword -jail -prefix -vserver -lxc
+}
+
+start()
+{
+	# Mount local filesystems in /etc/fstab.
+	local types="noproc" x= no_netdev=
+	for x in $net_fs_list $extra_net_fs_list; do
+		types="${types},no${x}"
+	done
+
+	if [ "$RC_UNAME" = Linux ]; then
+		no_netdev="-O no_netdev"
+		if mountinfo -q /usr; then
+			touch "$RC_SVCDIR"/usr_premounted
+		fi
+	fi
+	ebegin "Mounting local filesystems"
+	mount -at "$types" $no_netdev
+	eend $? "Some local filesystem failed to mount"
+
+	# Always return 0 - some local mounts may not be critical for boot
+	return 0
+}
+
+stop()
+{
+	yesno $RC_GOINGDOWN || return 0
+	# We never unmount / or /dev or $RC_SVCDIR
+
+	# Bug 381783
+	local rc_svcdir=$(printf '%s\n' "$RC_SVCDIR" | sed 's:/lib\(32\|64\)\?/:/lib(32|64)?/:g')
+
+	local x= no_umounts_r="/|/dev|/dev/.*|${rc_svcdir}"
+	no_umounts_r="${no_umounts_r}|/bin|/sbin|/lib(32|64)?|/libexec"
+	# RC_NO_UMOUNTS is an env var that can be set by plugins
+	local IFS="$IFS:"
+	for x in $no_umounts $RC_NO_UMOUNTS; do
+		no_umounts_r="$no_umounts_r|$x"
+	done
+
+	if [ "$RC_UNAME" = Linux ]; then
+		no_umounts_r="$no_umounts_r|/proc|/proc/.*|/run|/sys|/sys/.*"
+		if [ -e "$rc_svcdir"/usr_premounted ]; then
+			no_umounts_r="$no_umounts_r|/usr"
+		fi
+	fi
+	no_umounts_r="^($no_umounts_r)$"
+
+	# Flush all pending disk writes now
+	sync; sync
+
+	. "$RC_LIBEXECDIR"/sh/rc-mount.sh
+
+	# Umount loop devices
+	einfo "Unmounting loop devices"
+	eindent
+	do_unmount "umount -d" --skip-point-regex "$no_umounts_r" \
+		--node-regex "^/dev/loop"
+	eoutdent
+
+	# Now everything else, except network filesystems as the
+	# network should be down by this point.
+	einfo "Unmounting filesystems"
+	eindent
+	local fs=
+	for x in $net_fs_list $extra_net_fs_list; do
+		fs="$fs${fs:+|}$x"
+	done
+	[ -n "$fs" ] && fs="^($fs)$"
+	do_unmount umount --skip-point-regex "$no_umounts_r" \
+		"${fs:+--skip-fstype-regex}" $fs --nonetdev
+	eoutdent
+
+	return 0
+}