linux-stable/include/linux/vt.h

#ifndef _LINUX_VT_H
#define _LINUX_VT_H

#include <uapi/linux/vt.h>


/* 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 */
#define VT_PREWRITE		0x0005 /* A char is about to be written to the console */

#ifdef CONFIG_VT_CONSOLE

extern int vt_kmsg_redirect(int new);

#else

static inline int vt_kmsg_redirect(int new)
{
	return 0;
}

#endif

#endif /* _LINUX_VT_H */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`#ifndef _LINUX_VT_H`
			`#define _LINUX_VT_H`

UAPI: (Scripted) Disintegrate include/linux Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com> 2012-10-13 10:46:48 +01:00			`#include <uapi/linux/vt.h>`
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 <samuel.thibault@ens-lyon.org> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2007-10-18 23:39:17 -07:00
vt: don't export vt_kmsg_redirect() to userspace Fix following warning in linux-next by guarding the function definition (both the "extern" and the inline) with #ifdef __KERNEL__. usr/include/linux/vt.h:89: userspace cannot call function or variable defined in the kernel Introduced by commit 5ada918b82399eef3afd6a71e3637697d6bd719f ("vt: introduce and use vt_kmsg_redirect() function"). Signed-off-by: Bernhard Walle <bernhard@bwalle.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2009-12-17 15:27:11 -08:00
notifiers: vt: move vt notifiers into vt.h It is not necessary to share the same notifier.h. Signed-off-by: WANG Cong <amwang@redhat.com> Cc: David Miller <davem@davemloft.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2011-07-25 17:13:12 -07:00			`/* 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 */`
			`#define VT_PREWRITE 0x0005 /* A char is about to be written to the console */`

vt: introduce and use vt_kmsg_redirect() function The kernel offers with TIOCL_GETKMSGREDIRECT ioctl() the possibility to redirect the kernel messages to a specific console. However, since it's not possible to switch to the kernel message console after a panic(), it would be nice if the kernel would print the panic message on the current console. This patch series adds a new interface to access the global kmsg_redirect variable by a function to be able to use it in code where CONFIG_VT_CONSOLE is not set (kernel/panic.c). This patch: Instead of using and exporting a global value kmsg_redirect, introduce a function vt_kmsg_redirect() that both can set and return the console where messages are printed. Change all users of kmsg_redirect (the VT code itself and kernel/power.c) to the new interface. The main advantage is that vt_kmsg_redirect() can also be used when CONFIG_VT_CONSOLE is not set. Signed-off-by: Bernhard Walle <bernhard@bwalle.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2009-12-14 18:00:43 -08:00			`#ifdef CONFIG_VT_CONSOLE`

			`extern int vt_kmsg_redirect(int new);`

			`#else`

			`static inline int vt_kmsg_redirect(int new)`
			`{`
			`return 0;`
			`}`

			`#endif`

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`#endif /* _LINUX_VT_H */`