$OpenBSD$
--- svscan.c.orig	Mon Nov 26 22:01:50 2001
+++ svscan.c	Mon Nov 26 20:56:21 2001
@@ -1,5 +1,6 @@
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <signal.h>
 #include "direntry.h"
 #include "strerr.h"
 #include "error.h"
@@ -173,14 +174,32 @@
   }
 }
 
+int scannow=0;
+
+static void sighandler(int i) {
+  scannow=1;
+}
+
 main(int argc,char **argv)
 {
+  int wait;
+  char *s;
+  
   if (argv[0] && argv[1])
     if (chdir(argv[1]) == -1)
       strerr_die4sys(111,FATAL,"unable to chdir to ",argv[1],": ");
-
+  signal(SIGHUP,sighandler);
+  s=env_get("WAIT");
+  if (s) 
+    wait=atoi(s);
+  else
+    wait=5;  
   for (;;) {
     doit();
-    sleep(5);
+    if (wait)
+      sleep(wait);
+    else
+      while (!scannow) sleep(60);
+    scannow=0;
   }
 }