172 	if (device_handle!=NULL)  in set_device()
173 		fclose (device_handle);  in set_device()
175 	if ( (device_handle=fopen (new_device,"rb"))==NULL) {  in set_device()
189 			fclose (device_handle);  in set_device()
190 			device_handle=NULL;		/* Notice that our device is still not set up */  in set_device()
209 	if (device_handle==NULL) {  in set_offset()
263 	if ( (fseek (device_handle,new_offset,SEEK_SET))==-1) {  in set_offset()
367 	if (device_handle==NULL) {  in set()
622 	if (device_handle==NULL)  in show()
778 	if (device_handle==NULL) {  in remember()
816 	if (device_handle==NULL) {  in recall()
859 	if (device_handle==NULL) {  in enable_write()
878 	fclose (device_handle);  in enable_write()
879 	device_handle=fp;write_access=1;  in enable_write()
888 	if (device_handle==NULL) {  in disable_write()
898 	fclose (device_handle);  in disable_write()
899 	device_handle=fp;write_access=0;  in disable_write()