Add option to pause at startup

This allows us to attach gdb before anything
interesting happens.  Use the command
'signal 14' to get the process running again.

1 files changed, 10 insertions, 5 deletions

diff --git a/qarshd.c b/qarshd.c
index 950135e..91e2501 100644
--- a/qarshd.c
+++ b/qarshd.c
@@ -46,6 +46,7 @@
  */
 
 int debug = 0;
+int dopause = 0;
 
 /* Globals */
 struct sockaddr_storage peername;
@@ -279,10 +280,11 @@ handle_packets(int infd)
 	sa.sa_mask = sigmask;
 	sa.sa_flags = SA_RESTART;
 	sigaction(SIGCHLD, &sa, NULL);
-#if 0
-	signal(SIGALRM, sig_handler);
-	pause();
-#endif
+	if (dopause) {
+		signal(SIGALRM, sig_handler);
+		pause();
+		signal(SIGALRM, SIG_DFL);
+	}
 
 	for (;;) {
 		FD_SET(infd, &rfds);
@@ -397,11 +399,14 @@ main(int argc, char *argv[])
 
 	openlog("qarshd", LOG_PID, LOG_DAEMON);
 
-	while ((ch = getopt(argc, argv, "d")) != -1) {
+	while ((ch = getopt(argc, argv, "pd")) != -1) {
 		switch (ch) {
 			case 'd':
 				debug = 1;
 				break;
+			case 'p':
+				dopause = 1;
+				break;
 			case '?':
 			default:
 				printf("unknown option '%c'\n", optopt);