Set the poll'ed fd to -1 when we halfclose the fd to avoid

an infinite loop on certain OS's.


git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2057 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_pipe.c

@@ -52,6 +52,7 @@ rdf(struct pollfd *fds, int idx)
 	if (i <= 0 || fds[1-idx].events == 0) {
 		AZ(shutdown(fds[idx].fd, SHUT_RD));
 		AZ(shutdown(fds[1-idx].fd, SHUT_WR));
+		fds[idx].fd = -1;
 		fds[idx].events = 0;
 		return;
 	}
@@ -60,6 +61,7 @@ rdf(struct pollfd *fds, int idx)
 		if (j != i) {
 			AZ(shutdown(fds[idx].fd, SHUT_WR));
 			AZ(shutdown(fds[1-idx].fd, SHUT_RD));
+			fds[1-idx].fd = -1;
 			fds[1-idx].events = 0;
 			return;
 		}