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 cfc31e1..992c7aa 100644 (file)
--- 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) {