rumpkern_demo: Do not constantly try to close closed fds

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>

diff --git a/rumpkern_demo.c b/rumpkern_demo.c
index 4701a8c8490a3156a46fa43b62c8c1a287e15f86..c3b03a9fd69e74c027fd79e1865c6eb76bd464d3 100644 (file)
--- a/rumpkern_demo.c
+++ b/rumpkern_demo.c
@@ -179,7 +179,8 @@ processzombies(void)
         * completed or not.
         */
        for (i = 1; i < MAXCONN; i++) {
-               if (conns[i].c_cnt != -1 && ++conns[i].c_cnt > 10) {
+               if (conns[i].c_cnt != -1 && ++conns[i].c_cnt > 10
+                    && pfds[i].fd != -1) {
                        close(i);
                }
        }