From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Tue, 6 Mar 2012 23:16:12 +0000 (-0500)
Subject: Fix: recvmsg should handle EINTR
X-Git-Tag: v2.0.0-rc3~11
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=91fe73e226b96814add53efc5c3e37b54452c68c;p=lttng-tools.git

Fix: recvmsg should handle EINTR

Acked-by: David Goulet <dgoulet@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/src/common/sessiond-comm/sessiond-comm.c b/src/common/sessiond-comm/sessiond-comm.c
index 61f4ed52b..e767c5c23 100644
--- a/src/common/sessiond-comm/sessiond-comm.c
+++ b/src/common/sessiond-comm/sessiond-comm.c
@@ -267,7 +267,9 @@ ssize_t lttcomm_recv_unix_sock(int sock, void *buf, size_t len)
 	msg.msg_iov = iov;
 	msg.msg_iovlen = 1;
 
-	ret = recvmsg(sock, &msg, MSG_WAITALL);
+	do {
+		ret = recvmsg(sock, &msg, MSG_WAITALL);
+	} while (ret < 0 && errno == EINTR);
 	if (ret < 0) {
 		PERROR("recvmsg");
 	}
@@ -405,7 +407,9 @@ ssize_t lttcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
 	msg.msg_control = recv_fd;
 	msg.msg_controllen = sizeof(recv_fd);
 
-	ret = recvmsg(sock, &msg, 0);
+	do {
+		ret = recvmsg(sock, &msg, 0);
+	} while (ret < 0 && errno == EINTR);
 	if (ret < 0) {
 		PERROR("recvmsg fds");
 		goto end;
@@ -532,7 +536,9 @@ ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
 	msg.msg_controllen = sizeof(anc_buf);
 #endif /* __linux__ */
 
-	ret = recvmsg(sock, &msg, 0);
+	do {
+		ret = recvmsg(sock, &msg, 0);
+	} while (ret < 0 && errno == EINTR);
 	if (ret < 0) {
 		PERROR("recvmsg fds");
 		goto end;