libtracectl: add \0 at end of received msg

diff --git a/libtracectl/tracectl.c b/libtracectl/tracectl.c
index a2521585b336f204d56cf1ef7b8489d18d242578..a25bd3b214dd0018b2765f3363ec2296e7d6a4de 100644 (file)
--- a/libtracectl/tracectl.c
+++ b/libtracectl/tracectl.c
@@ -228,7 +228,7 @@ int listener_main(void *p)
                        struct trctl_msg msg;
                        int len;
 
-                       result = len = recvfrom(pfd, recvbuf, sizeof(recvbuf), 0, &addr, &addrlen);
+                       result = len = recvfrom(pfd, recvbuf, sizeof(recvbuf-1), 0, &addr, &addrlen);
                        if(result == -1) {
                                PERROR("recvfrom");
                                continue;
@@ -236,6 +236,8 @@ int listener_main(void *p)
 
                        if(recvbuf[len-1] == '\n')
                                recvbuf[len-1] = '\0';
+                       else
+                               recvbuf[len] = 0;
 
                        fprintf(stderr, "received a message! it's: %s\n", recvbuf);