Print poll(2) errno

Distinguish between return values -1 (errno set) and 0.

OK kettenis

diff --git a/usr.sbin/ldomd/ds.c b/usr.sbin/ldomd/ds.c
index 47fc147..0090a60 100644 (file)
--- a/usr.sbin/ldomd/ds.c
+++ b/usr.sbin/ldomd/ds.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: ds.c,v 1.11 2021/10/24 21:24:18 deraadt Exp $ */
+/*     $OpenBSD: ds.c,v 1.12 2022/07/27 19:42:22 kn Exp $      */
 
 /*
  * Copyright (c) 2012 Mark Kettenis
@@ -741,8 +741,10 @@ ds_conn_serve(void)
 
        while (1) {
                nfds = poll(pfd, num_ds_conns, -1);
-               if (nfds == -1 || nfds == 0)
-                       errx(1, "poll");
+               if (nfds == -1)
+                       err(1, "poll");
+               if (nfds == 0)
+                       errx(1, "poll timeout");
 
                TAILQ_FOREACH(dc, &ds_conns, link) {
                        if (pfd[dc->id].revents)