From: Stephen Hemminger <stephen@networkplumber.org>
Date: Thu, 8 Feb 2024 17:25:08 +0000 (-0800)
Subject: ip: detect rtnl_listen errors while monitoring netns
X-Git-Tag: v6.8.0~20
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f340a07513858570cffcef7d5667a50a4f37458;p=thirdparty%2Fiproute2.git

ip: detect rtnl_listen errors while monitoring netns

If rtnl_listen detects error (such as netlink socket EOF),
then exit with status 2 like other iproute2 monitor commands.

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

diff --git a/ip/ipnetns.c b/ip/ipnetns.c
index 0ae46a87..594b2ef1 100644
--- a/ip/ipnetns.c
+++ b/ip/ipnetns.c
@@ -96,7 +96,8 @@ static int ipnetns_have_nsid(void)
 			close(fd);
 			return 0;
 		}
-		rtnl_listen(&rth, ipnetns_accept_msg, NULL);
+		if (rtnl_listen(&rth, ipnetns_accept_msg, NULL) < 0)
+			exit(2);
 		close(fd);
 	}