+
+ // Do the installation
+ OrderResult DoInstall() {
+ if(DoInstallPreFork() == Failed)
+ return Failed;
+
+ return DoInstallPostFork();
+ }
+
+ // stuff that needs to be done before the fork() of a library that
+ // uses apt
+ OrderResult DoInstallPreFork() {
+ Res = OrderInstall();
+ return Res;
+ };
+
+ // stuff that needs to be done after the fork
+ OrderResult DoInstallPostFork(int statusFd=-1) {
+ bool goResult = Go(statusFd);
+ if(goResult == false)
+ return Failed;
+
+ // if all was fine update the state file
+ if(Res == Completed) {
+ Cache.writeStateFile(NULL);
+ }
+ return Res;
+ };
+