minix/servers/fs/dmap.h
2005-04-21 14:53:53 +00:00

25 lines
775 B
C

#ifndef _DMAP_H
#define _DMAP_H
#include <minix/config.h>
#include <minix/ipc.h>
/* Device table. This table is indexed by major device number. It provides
* the link between major device numbers and the routines that process them.
* The table can be update dynamically. The field 'dmap_flags' describe an
* entry's current status and determines what control options are possible.
*/
#define DMAP_MUTABLE 0x01 /* mapping can be overtaken */
#define DMAP_BUSY 0x02 /* driver busy with request */
enum dev_style { STYLE_DEV, STYLE_NDEV, STYLE_TTY, STYLE_CLONE };
extern struct dmap {
int _PROTOTYPE ((*dmap_opcl), (int, Dev_t, int, int) );
void _PROTOTYPE ((*dmap_io), (int, message *) );
int dmap_driver;
int dmap_flags;
} dmap[];
#endif /* _DMAP_H */