/* See local README for interface description. */
static void *
-whoson_open(uschar *filename, uschar **errmsg)
+whoson_open(const uschar * filename, uschar ** errmsg)
{
filename = filename; /* Keep picky compilers happy */
errmsg = errmsg;
/* See local README for interface description. */
static int
-whoson_find(void *handle, uschar *filename, uschar *query, int length,
- uschar **result, uschar **errmsg, uint *do_cache)
+whoson_find(void * handle, const uschar * filename, uschar * query, int length,
+ uschar ** result, uschar ** errmsg, uint * do_cache)
{
uschar buffer[80];
handle = handle; /* Keep picky compilers happy */