make dnspcap spit out the filename on error

diff --git a/pdns/dnspcap.cc b/pdns/dnspcap.cc
index 3366e70a9ae8396e8e39b2cff9d579866d8ea1c4..d69244e8293972dce392fe82586ef91b179641cd 100644 (file)
--- a/pdns/dnspcap.cc
+++ b/pdns/dnspcap.cc
@@ -11,7 +11,7 @@ PcapPacketReader::PcapPacketReader(const string& fname) : d_fname(fname)
 {
   d_fp=fopen(fname.c_str(),"r");
   if(!d_fp)
-    unixDie("Unable to open file");
+    unixDie("Unable to open file " + fname);
   
   int flags=fcntl(fileno(d_fp),F_GETFL,0);
   fcntl(fileno(d_fp), F_SETFL,flags&(~O_NONBLOCK)); // bsd needs this in stdin (??)