int autoload_device(DCR *dcr, int writing, BSOCK *dir);
bool autochanger_cmd(DCR *dcr, BSOCK *dir, const char *cmd);
bool unload_autochanger(DCR *dcr, int loaded);
int autoload_device(DCR *dcr, int writing, BSOCK *dir);
bool autochanger_cmd(DCR *dcr, BSOCK *dir, const char *cmd);
bool unload_autochanger(DCR *dcr, int loaded);