minix/servers/vfs/dmap.h
David van Moolenbroek 664b726cd3 VFS: further cleanup of device code
- all TTY-related exceptions have now been merged into the regular
  code paths, allowing non-TTY drivers to expose TTY-like devices;
- as part of this, CTTY_MAJOR is now fully managed by VFS instead of
  being an ugly stepchild of the TTY driver;
- device styles have become completely obsolete, support for them has
  been removed throughout the system; same for device flags, which had
  already become useless a while ago;
- device map open/close and I/O function pointers have lost their use,
  thus finally making the VFS device code actually readable;
- the device-unrelated pm_setsid has been moved to misc.c;
- some other small cleanup-related changes.

Change-Id: If90b10d1818e98a12139da3e94a15d250c9933da
2014-03-01 09:04:58 +01:00

27 lines
832 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 {
endpoint_t dmap_driver;
char dmap_label[LABEL_MAX];
int dmap_sel_busy;
struct filp *dmap_sel_filp;
thread_t dmap_servicing;
mutex_t dmap_lock;
int dmap_recovering;
int dmap_seen_tty;
} dmap[];
#endif