/* Header for the functions that are shared by the lookups */
-extern int lf_check_file(int, uschar *, int, int, uid_t *, gid_t *, char *,
- uschar **);
+extern int lf_check_file(int, uschar *, int, int, uid_t *, gid_t *,
+ const char *, uschar **);
extern uschar *lf_quote(uschar *, uschar *, int, uschar *, int *, int *);
extern int lf_sqlperform(uschar *, uschar *, uschar *, uschar *, uschar **,
uschar **, BOOL *, int(*)(uschar *, uschar *, uschar **,