code: 9ferno

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fixed bugs in ndb/cs and ndb/dns

--- a/appl/cmd/ndb/cs.b

+++ b/appl/cmd/ndb/cs.b

@@ -119,8 +119,11 @@

 	if(srv != nil)

 		srv->init();

-	sys->remove(svcname+"/cs");

-	sys->unmount(svcname, mntpt);

+	(ok, nil) := sys->stat(svcname+"/cs");

+	if(ok == 0) {

+		sys->remove(svcname+"/cs");

+		sys->unmount(svcname, mntpt);

+	}

 	publish(svcname);

 	if(sys->bind(svcname, mntpt, Sys->MBEFORE) < 0)

 		error(sys->sprint("can't bind #s on %s: %r", mntpt));

--- a/appl/cmd/ndb/dns.b

+++ b/appl/cmd/ndb/dns.b

@@ -144,8 +144,11 @@

 	stderr = sys->fildes(2);

 	readservers();

 	now = time();

-	sys->remove(svcname+"/dns");

-	sys->unmount(svcname, mntpt);

+	(ok, nil) := sys->stat(svcname+"/dns");

+	if(ok == 0) {

+		sys->remove(svcname+"/dns");

+		sys->unmount(svcname, mntpt);

+	}

 	publish(svcname);

 	if(sys->bind(svcname, mntpt, Sys->MBEFORE) < 0)

 		error(sys->sprint("can't bind #s on %s: %r", mntpt));