diff -ruN djbdns-1.05.orig/tinydns-data.c djbdns-1.05/tinydns-data.c
--- djbdns-1.05.orig/tinydns-data.c	Mon Jan 22 03:51:44 2001
+++ djbdns-1.05/tinydns-data.c	Mon Jan 29 18:12:47 2001
@@ -159,11 +159,7 @@
     die_datatmp();
 }
 
-buffer b;
-char bspace[1024];
-
 static stralloc line;
-int match = 1;
 unsigned long linenum = 0;
 
 #define NUMFIELDS 15
@@ -181,7 +177,7 @@
   strerr_die4x(111,FATAL,"unable to parse data line ",strnum,why);
 }
 
-int main()
+int load(const char *fname)
 {
   int fddata;
   int i;
@@ -196,20 +192,18 @@
   char type[2];
   char soa[20];
   char buf[4];
+  int match;
+  buffer b;
+  char bspace[1024];
 
-  umask(022);
-
-  fddata = open_read("data");
+  fddata = open_read(fname);
   if (fddata == -1)
-    strerr_die2sys(111,FATAL,"unable to open data: ");
+    strerr_die4sys(111,FATAL,"unable to open ",fname,": ");
   defaultsoa_init(fddata);
 
   buffer_init(&b,buffer_unixread,fddata,bspace,sizeof bspace);
 
-  fdcdb = open_trunc("data.tmp");
-  if (fdcdb == -1) die_datatmp();
-  if (cdb_make_start(&cdb,fdcdb) == -1) die_datatmp();
-
+  match = 1;
   while (match) {
     ++linenum;
     if (getln(&b,&line,&match,'\n') == -1)
@@ -444,6 +438,21 @@
       default:
         syntaxerror(": unrecognized leading character");
     }
+  }
+  close(fddata);
+}
+
+main(int argc, char **argv)
+{
+  umask(022);
+  fdcdb = open_trunc("data.tmp");
+  if (fdcdb == -1) die_datatmp();
+  if (cdb_make_start(&cdb,fdcdb) == -1) die_datatmp();
+
+  if (argc == 1)
+    load("data");
+  while(--argc) {
+    load(argv[argc]);
   }
 
   if (cdb_make_finish(&cdb) == -1) die_datatmp();