openwrt/package/pptp/patches/100-signal_cleanup.patch

--- a/pptp.c
+++ b/pptp.c
@@ -60,6 +60,7 @@
 int syncppp = 0;
 int log_level = 1;
 int disable_buffer = 0;
+pid_t callmgr_pid = 0;
 
 struct in_addr get_ip_address(char *name);
 int open_callmgr(struct in_addr inetaddr, char *phonenr, int argc,char **argv,char **envp, int pty_fd, int gre_fd);
@@ -115,6 +116,8 @@ sigjmp_buf env;
 /*** signal handler ***********************************************************/
 void sighandler(int sig)
 {
+	fprintf(stderr, "Got signal, pid=%d\n", callmgr_pid);
+	fflush(stderr);
     siglongjmp(env, 1);
 }
 
@@ -330,6 +333,14 @@ int main(int argc, char **argv, char **e
         parent_pid = 0; /* don't kill pppd */
     }
 
+    if (sigsetjmp(env, 1)!= 0) goto shutdown;
+
+    signal(SIGINT,  sighandler);
+    signal(SIGTERM, sighandler);
+    signal(SIGKILL, sighandler);
+    signal(SIGCHLD, sighandler);
+    signal(SIGUSR1, sigstats);
+
     do {
         /*
          * Open connection to call manager (Launch call manager if necessary.)
@@ -360,13 +371,6 @@ int main(int argc, char **argv, char **e
     if (rc != 0) perror("prctl");
 #endif
     inststr(argc, argv, envp, buf);
-    if (sigsetjmp(env, 1)!= 0) goto shutdown;
-
-    signal(SIGINT,  sighandler);
-    signal(SIGTERM, sighandler);
-    signal(SIGKILL, sighandler);
-    signal(SIGCHLD, sighandler);
-    signal(SIGUSR1, sigstats);
 
     /* Do GRE copy until close. */
     pptp_gre_copy(call_id, peer_call_id, pty_fd, gre_fd);
@@ -375,6 +379,8 @@ shutdown:
     /* on close, kill all. */
     if(launchpppd)
         kill(parent_pid, SIGTERM);
+    if (callmgr_pid)
+	kill(callmgr_pid, SIGTERM);
     close(pty_fd);
     close(callmgr_sock);
     exit(0);
@@ -407,7 +413,7 @@ int open_callmgr(struct in_addr inetaddr
     struct sockaddr_un where;
     const int NUM_TRIES = 3;
     int i, fd;
-    pid_t pid;
+    pid_t pid = 0;
     int status;
     /* Open socket */
     if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
@@ -434,6 +440,7 @@ int open_callmgr(struct in_addr inetaddr
                     launch_callmgr(inetaddr, phonenr, argc, argv, envp);
                 }
                 default: /* parent */
+		    callmgr_pid = pid;
                     waitpid(pid, &status, 0);
                     if (status!= 0)
                         fatal("Call manager exited with error %d", status);