/usr/include/directfb-internal/fbdev/vt.h is in libdirectfb-dev 1.7.7-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef __VT_H__
#define __VT_H__
#include <signal.h>
#include <termios.h>
#include <unistd.h>
#include <linux/vt.h>
#include <directfb.h>
typedef struct {
int fd0; /* file descriptor of /dev/tty0 */
int fd; /* file descriptor of /dev/ttyN
where N is the number of the allocated VT,
may be equal to 'fd0' if VT allocation
is disabled by "--no-vt-switch" */
int num; /* number of vt where DirectFB runs */
int prev; /* number of vt DirectFB was started from */
int old_fb; /* original fb mapped to vt */
struct sigaction sig_usr1; /* previous signal handler for USR1 */
struct sigaction sig_usr2; /* previous signal handler for USR2 */
struct vt_mode vt_mode; /* previous VT mode */
DirectThread *thread;
pthread_mutex_t lock;
pthread_cond_t wait;
int vt_sig;
struct termios old_ts;
bool flush;
DirectThread *flush_thread;
} VirtualTerminal;
/*
* allocates and switches to a new virtual terminal
*/
DFBResult dfb_vt_initialize( void );
DFBResult dfb_vt_join( void );
/*
* deallocates virtual terminal
*/
DFBResult dfb_vt_shutdown( bool emergency );
DFBResult dfb_vt_leave( bool emergency );
DFBResult dfb_vt_detach( bool force );
bool dfb_vt_switch( int num );
#endif
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