When we detect the parent absconding the CLI pipes, close the acceptor

sockets as fast as we can, so that a new copy of varnishd can get at them.

Fixes	#622



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4521 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache.h

@@ -450,6 +450,7 @@ void vca_return_session(struct sess *sp);
 void vca_close_session(struct sess *sp, const char *why);
 void VCA_Prep(struct sess *sp);
 void VCA_Init(void);
+void VCA_Shutdown(void);
 const char *VCA_waiter_name(void);
 extern pthread_t VCA_thread;
 

bin/varnishd/cache_acceptor.c

@@ -424,6 +424,21 @@ VCA_Init(void)
 	CLI_AddFuncs(vca_cmds);
 }
 
+void
+VCA_Shutdown(void)
+{
+	struct listen_sock *ls;
+	int i;
+
+	VTAILQ_FOREACH(ls, &heritage.socks, list) {
+		if (ls->sock < 0)
+			continue;
+		i = ls->sock;
+		ls->sock = -1;
+		(void)close(i);
+	}
+}
+
 void
 VCA_tweak_waiter(struct cli *cli, const char *arg)
 {

bin/varnishd/cache_cli.c

@@ -112,6 +112,7 @@ CLI_Run(void)
 		i = CLS_Poll(cls, -1);
 	} while(i > 0);
 	VSL(SLT_CLI, 0, "EOF on CLI connection, worker stops");
+	VCA_Shutdown();
 }
 
 /*--------------------------------------------------------------------*/