ip: detect errors in netconf monitor mode

If rtnl_listen() returns error while looking for netconf events,
then exit with status of 2 as other iproute2 monitor actions do.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/ip/ipnetconf.c b/ip/ipnetconf.c
index 9ae6c45e7fd157d6b06d09f951f5f5977f9e01e4..a0c7e051bac5682718fccd1cadbc3e62bf895e8f 100644 (file)
--- a/ip/ipnetconf.c
+++ b/ip/ipnetconf.c
@@ -193,7 +193,8 @@ static int do_show(int argc, char **argv)
                        perror("Can not send request");
                        exit(1);
                }
-               rtnl_listen(&rth, print_netconf, stdout);
+               if (rtnl_listen(&rth, print_netconf, stdout) < 0)
+                       exit(2);
        } else {
                rth.flags = RTNL_HANDLE_F_SUPPRESS_NLERR;
 dump: