X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust-comm%2Flttng-ust-comm.c;h=0ce9fc87a293b4457ee29d027caf6f65954c172b;hb=1ea11eab9f65504b2d217ef16f53f52ff941c630;hp=214f6e45024562ca4762bcc153344cea4ff70fbe;hpb=b35d179d7be2ab0cb4a9c698b86d78928089fc39;p=lttng-ust.git

diff --git a/liblttng-ust-comm/lttng-ust-comm.c b/liblttng-ust-comm/lttng-ust-comm.c
index 214f6e45..0ce9fc87 100644
--- a/liblttng-ust-comm/lttng-ust-comm.c
+++ b/liblttng-ust-comm/lttng-ust-comm.c
@@ -273,7 +273,14 @@ ssize_t lttcomm_send_unix_sock(int sock, void *buf, size_t len)
 	msg.msg_iov = iov;
 	msg.msg_iovlen = 1;
 
-	ret = sendmsg(sock, &msg, 0);
+	/*
+	 * Using the MSG_NOSIGNAL when sending data from sessiond to
+	 * libust, so libust does not receive an unhandled SIGPIPE or
+	 * SIGURG. The sessiond receiver side can be made more resilient
+	 * by ignoring SIGPIPE, but we don't have this luxury on the
+	 * libust side.
+	 */
+	ret = sendmsg(sock, &msg, MSG_NOSIGNAL);
 	if (ret < 0) {
 		perror("sendmsg");
 	}