From b293d758470e971253eec42b817bc9ef1213b228 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Thu, 18 Oct 2007 23:39:17 -0700 Subject: Console events and accessibility Some external modules like Speakup need to monitor console output. This adds a VT notifier that such modules can use to get console output events: allocation, deallocation, writes, other updates (cursor position, switch, etc.) [akpm@linux-foundation.org: fix headers_check] Signed-off-by: Samuel Thibault Cc: Dmitry Torokhov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/notifier.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux/notifier.h') diff --git a/include/linux/notifier.h b/include/linux/notifier.h index 6ec7e21a369..0c40cc0b4a3 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -242,5 +242,11 @@ static inline int notifier_to_errno(int ret) extern struct blocking_notifier_head reboot_notifier_list; +/* Virtual Terminal events. */ +#define VT_ALLOCATE 0x0001 /* Console got allocated */ +#define VT_DEALLOCATE 0x0002 /* Console will be deallocated */ +#define VT_WRITE 0x0003 /* A char got output */ +#define VT_UPDATE 0x0004 /* A bigger update occurred */ + #endif /* __KERNEL__ */ #endif /* _LINUX_NOTIFIER_H */ -- cgit v1.2.3