Backup system state in ipa-server-install

This patch adds a sysrestore module which allows ipa-server-install
code to backup any system state so that it can be restored again
with e.g. ipa-server-install --uninstall.

The idea is that any files ipa-server-install modifies gets backed
up to /var/cache/ipa/sysrestore/ while any "meta" state, like
whether a service is enabled with chkconfig, is saved to
/var/cache/ipa/sysrestore.state.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/ipa-server/ipaserver/webguiinstance.py b/ipa-server/ipaserver/webguiinstance.py
index 28543558..f3900245 100644
--- a/ipa-server/ipaserver/webguiinstance.py
+++ b/ipa-server/ipaserver/webguiinstance.py
@@ -24,6 +24,14 @@ class WebGuiInstance(service.Service):
         service.Service.__init__(self, "ipa-webgui")
 
     def create_instance(self):
-        self.step("starting ipa-webgui", self.restart)
-        self.step("configuring ipa-webgui to start on boot", self.chkconfig_on)
+        self.step("starting ipa-webgui", self.__start)
+        self.step("configuring ipa-webgui to start on boot", self.__enable)
         self.start_creation("Configuring ipa-webgui")
+
+    def __start(self):
+        self.backup_state("running", self.is_running())
+        self.restart()
+
+    def __enable(self):
+        self.backup_state("enabled", self.is_enabled())
+        self.chkconfig_on()