From: Tiwei Bie <tiwei.bie@intel.com>
Date: Tue, 6 Mar 2018 10:43:25 +0000 (+0800)
Subject: vhost: do not generate signal when sendmsg fails
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=7a36967029c0dc062bdc25fc28fb2c1d0bbca179;p=dpdk.git

vhost: do not generate signal when sendmsg fails

More precisely, do not generate a SIGPIPE signal if the peer
has closed the connection. Otherwise, it will terminate the
process by default. As a library, we should avoid terminating
the application process when error happens and just need to
return with an error.

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c
index cfc31e1797..992c7aa1ca 100644
--- a/lib/librte_vhost/socket.c
+++ b/lib/librte_vhost/socket.c
@@ -174,7 +174,7 @@ send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num)
 	}
 
 	do {
-		ret = sendmsg(sockfd, &msgh, 0);
+		ret = sendmsg(sockfd, &msgh, MSG_NOSIGNAL);
 	} while (ret < 0 && errno == EINTR);
 
 	if (ret < 0) {