minix/servers/vfs/dmap.h

30 lines
944 B
C

#ifndef __VFS_DMAP_H__
#define __VFS_DMAP_H__
#include "threads.h"
/*===========================================================================*
* Device <-> Driver Table *
*===========================================================================*/
/* 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 updated dynamically. The field 'dmap_flags' describe an
* entry's current status and determines what control options are possible.
*/
extern struct dmap {
int(*dmap_opcl) (int, dev_t, endpoint_t, int);
int(*dmap_io) (endpoint_t, message *);
endpoint_t dmap_driver;
char dmap_label[LABEL_MAX];
int dmap_flags;
int dmap_style;
struct filp *dmap_sel_filp;
endpoint_t dmap_servicing;
mutex_t dmap_lock;
mutex_t *dmap_lock_ref;
int dmap_recovering;
} dmap[];
#endif