From mboxrd@z Thu Jan 1 00:00:00 1970 From: Denis Kirjanov Subject: [PATCH] iproute: print more verbose error on route cache flush Date: Sat, 5 Sep 2015 10:40:50 +0300 Message-ID: <1441438850-4793-1-git-send-email-kda@linux-powerpc.org> Cc: netdev@vger.kernel.org, Denis Kirjanov To: stephen@networkplumber.org Return-path: Received: from mail-lb0-f180.google.com ([209.85.217.180]:33700 "EHLO mail-lb0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750749AbbIEITA (ORCPT ); Sat, 5 Sep 2015 04:19:00 -0400 Received: by lbcjc2 with SMTP id jc2so21338615lbc.0 for ; Sat, 05 Sep 2015 01:18:58 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: Before: kda@vfirst ~/devel/iproute2 $ ./ip/ip route flush cache Cannot open "/proc/sys/net/ipv4/route/flush" After: kda@vfirst ~/devel/iproute2/ip $ ./ip route flush cache Cannot open "/proc/sys/net/ipv4/route/flush": Permission denied Signed-off-by: Denis Kirjanov --- ip/iproute.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ip/iproute.c b/ip/iproute.c index 8f49e62..abe4180 100644 --- a/ip/iproute.c +++ b/ip/iproute.c @@ -1213,7 +1213,8 @@ static int iproute_flush_cache(void) char *buffer = "-1"; if (flush_fd < 0) { - fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH); + fprintf (stderr, "Cannot open \"%s\": %s\n", + ROUTE_FLUSH_PATH, strerror(errno)); return -1; } -- 2.4.0