+int taper_cmd(cmd_t cmd, void *ptr, char *destname, int level, char *datestamp);
+
+struct disk_s;
+struct chunker_s;
+int chunker_cmd(struct chunker_s *chunker, cmd_t cmd, struct disk_s *dp);
+
+struct dumper_s;
+int dumper_cmd(struct dumper_s *dumper, cmd_t cmd, struct disk_s *dp);
+
+char *amhost_get_security_conf(char *string, void *arg);
+int check_infofile(char *infodir, disklist_t *dl, char **errmsg);