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vt: add an event interface

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This is needed and requested in various forms for ConsoleKit, screenblank
handling and the like so do the job with a single interface. Also build the
interface so that unlike VT_WAITACTIVE and friends it won't miss events.

FIXME: Should this be a waitactive ioctl or a new device file you can poll
and read events from. We need the code anyway to fix up the existing broken
wait for console switch logic but the ConsoleKit people would prefer the
new device to the ioctl we have here

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
2009-09-19 13:13:24 -07:00
committed by Live-CD User
parent 4455e34495
commit 8b92e87d39
4 changed files with 154 additions and 52 deletions
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14
include/linux/vt.h
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@@ -74,4 +74,18 @@ struct vt_consize {
#define VT_UNLOCKSWITCH 0x560C /* allow vt switching */
#define VT_GETHIFONTMASK 0x560D /* return hi font mask */
struct vt_event {
unsigned int event;
#define VT_EVENT_SWITCH 0x0001 /* Console switch */
#define VT_EVENT_BLANK 0x0002 /* Screen blank */
#define VT_EVENT_UNBLANK 0x0004 /* Screen unblank */
#define VT_EVENT_RESIZE 0x0008 /* Resize display */
#define VT_MAX_EVENT 0x000F
unsigned int old; /* Old console */
unsigned int new; /* New console (if changing) */
unsigned int pad[4]; /* Padding for expansion */
};
#define VT_WAITEVENT 0x560E /* Wait for an event */
#endif /* _LINUX_VT_H */