Use systemctl runtime mask to prevent automounting (#701676)

With the beta release of Fedora 19, invoking gparted appears to
automatically mount partitions.  The systemd daemon appears to be
performing the automounting.  Hence use systemctl runtime mask to
prevent this automounting from occurring.

Bug #701676 - gparted doesn't inhibit systemd mounting, leading to
              potential data loss

gparted.in

@@ -7,7 +7,7 @@
 #            File system problems can occur if devices are mounted
 #            prior to the completion of GParted's operations.
 #
-# Copyright (C) 2008, 2009, 2010 Curtis Gedak
+# Copyright (C) 2008, 2009, 2010, 2013 Curtis Gedak
 #
 #  This file is part of GParted.
 #
@@ -25,6 +25,20 @@
 #  along with GParted.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+#
+#  Search PATH to determine if systemctl program can be found
+#  and if appropriate daemon is running.
+#
+HAVE_SYSTEMCTL=no
+for k in '' `echo "$PATH" | sed 's,:, ,g'`; do
+	if test -x "$k/systemctl"; then
+		if test "z`ps -e | grep systemd`" != "z"; then
+			HAVE_SYSTEMCTL=yes
+			break
+		fi
+	fi
+done
+
 #
 #  Search PATH to determine if udisks program can be found
 #  and if appropriate daemon is running.
@@ -86,6 +100,14 @@ if test "x`id -u`" != "x0"; then
 	exit 1
 fi
 
+#
+#  Use systemctl to prevent automount by masking currently unmasked mount points
+#
+if test "x$HAVE_SYSTEMCTL" = "xyes"; then
+	MOUNTLIST=`systemctl list-unit-files --full --all -t mount --no-legend | grep -v masked | cut -f1 -d' '`
+	systemctl --runtime mask --quiet -- $MOUNTLIST
+fi
+
 #
 #  Use both udisks and hal-lock for invocation if both binaries exist and both
 #  daemons are running.
@@ -114,3 +136,10 @@ elif test "x$HAVE_HAL_LOCK" = "xyes"; then
 else
 	$BASE_CMD
 fi
+
+#
+#  Use systemctl to restore that status of any mount points changed above
+#
+if test "x$HAVE_SYSTEMCTL" = "xyes"; then
+	systemctl --runtime unmask --quiet -- $MOUNTLIST
+fi