commit 8b92e87d39bfd046e7581e1fe0f40eac40f88608
author Alan Cox <alan@linux.intel.com> Sat Sep 19 13:13:24 2009 -0700
committer Live-CD User <linux@linux.site> Sat Sep 19 13:13:24 2009 -0700
tree b558f69f2a9875ea6029546f9f70d268fd3ebaf6
parent 4455e344959a217ffc28de2ab1af87541322b343

vt: add an event interface

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>

drivers/char/vt.c

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index e47a4c8..33214d9 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -252,7 +252,6 @@
 	struct vt_notifier_param param = { .vc = vc };
 	atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, &param);
 }
-
 /*
  *	Low-Level Functions
  */
@@ -935,6 +934,7 @@
 
 	if (CON_IS_VISIBLE(vc))
 		update_screen(vc);
+	vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
 	return err;
 }
 
@@ -3637,6 +3637,7 @@
 		blank_state = blank_vesa_wait;
 		mod_timer(&console_timer, jiffies + vesa_off_interval);
 	}
+	vt_event_post(VT_EVENT_BLANK, vc->vc_num, vc->vc_num);
 }
 EXPORT_SYMBOL(do_blank_screen);
 
@@ -3681,6 +3682,7 @@
 		console_blank_hook(0);
 	set_palette(vc);
 	set_cursor(vc);
+	vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num);
 }
 EXPORT_SYMBOL(do_unblank_screen);