minix/servers/vfs/dmap.h

   1 #ifndef __VFS_DMAP_H__
   2 #define __VFS_DMAP_H__
   3
   4 #include "threads.h"
   5
   6 /*===========================================================================*
   7  *                       Device <-> Driver Table                             *
   8  *===========================================================================*/
   9
  10 /* Device table.  This table is indexed by major device number.  It provides
  11  * the link between major device numbers and the routines that process them.
  12  * The table can be updated dynamically. The field 'dmap_flags' describe an
  13  * entry's current status and determines what control options are possible.
  14  */
  15
  16 extern struct dmap {
  17   endpoint_t dmap_driver;
  18   char dmap_label[LABEL_MAX];
  19   int dmap_sel_busy;
  20   struct filp *dmap_sel_filp;
  21   thread_t dmap_servicing;
  22   mutex_t dmap_lock;
  23   int dmap_recovering;
  24   int dmap_seen_tty;
  25 } dmap[];
  26
  27 #endif