Print a warning if pcap_open_live modifies ebuf.

diff --git a/tcpdump.c b/tcpdump.c
index d5afc671b591c48cbc9ea66594855db418133fdf..4903a6233a93aa0c921638f6bb8e92170bbf1910 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -24,7 +24,7 @@ static const char copyright[] =
     "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997\n\
 The Regents of the University of California.  All rights reserved.\n";
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.160 2001-04-17 08:39:20 guy Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.161 2001-04-30 16:08:43 fenner Exp $ (LBL)";
 #endif
 
 /*
@@ -376,9 +376,12 @@ main(int argc, char **argv)
                        if (device == NULL)
                                error("%s", ebuf);
                }
+               *ebuf = '\0';
                pd = pcap_open_live(device, snaplen, !pflag, 1000, ebuf);
                if (pd == NULL)
                        error("%s", ebuf);
+               else if (*ebuf)
+                       warning("%s", ebuf);
                i = pcap_snapshot(pd);
                if (snaplen < i) {
                        warning("snaplen raised from %d to %d", snaplen, i);