--- uae/src/include/zfile.h	2018/04/24 16:39:25	1.1.1.2
+++ uae/src/include/zfile.h	2018/04/24 17:18:54	1.1.1.4
@@ -6,7 +6,12 @@
   * (c) 1996 Samuel Devulder
   */
 
-extern FILE *zfile_open(const char *, const char *);
-extern int zfile_close(FILE *);
-extern void zfile_exit(void);
+struct zfile;
 
+extern struct zfile *zfile_open (const char *, const char *);
+extern int zfile_fclose (struct zfile *);
+extern int zfile_fseek (struct zfile *z, long offset, int mode);
+extern long zfile_ftell (struct zfile *z);
+extern size_t zfile_fread (void *b, size_t l1, size_t l2, struct zfile *z);
+extern size_t zfile_fwrite (void *b, size_t l1, size_t l2, struct zfile *z);
+extern void zfile_exit (void);