apply only if not already done

Author: devnexen

ext/sockets/sockets.c

@@ -274,11 +274,19 @@ static bool php_accept_connect(php_socket *in_sock, php_socket *out_sock, struct
 	 * accept4 could had been used but not all platforms support it (e.g. Haiku, solaris < 11.4, ...)
 	 * win32, not having any concept of child process, has no need to address it.
 	 */
+	int mode;
 
-	if (fcntl(out_sock->bsd_socket, F_GETFD, FD_CLOEXEC) < 0) {
-		PHP_SOCKET_ERROR(out_sock, "unable to set cloexec mode on the socket", errno);
+	if ((mode = fcntl(out_sock->bsd_socket, F_GETFD)) < 0) {
+		PHP_SOCKET_ERROR(out_sock, "unable to get fcntl mode on the socket", errno);
 		return 0;
 	}
+
+	if (mode != (mode | FD_CLOEXEC)) {
+		if (fcntl(out_sock->bsd_socket, F_SETFD, FD_CLOEXEC) < 0) {
+			PHP_SOCKET_ERROR(out_sock, "unable to set cloexec mode on the socket", errno);
+			return 0;
+		}
+	}
 #endif
 
 	out_sock->error = 0;