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/* vlock.h -- main header file for vlock, the VT locking program for linux
*
* This program is copyright (C) 1994 Michael K. Johnson, and is free
* software which is freely distributable under the terms of the
* GNU public license, included as the file COPYING in this
* distribution. It is NOT public domain software, and any
* redistribution not permitted by the GNU General Public License is
* expressly forbidden without prior written permission from
* the author.
*
*/
#define O_PATTERN 1
#define O_VERSION 2
#define O_HELP 3
void release_vt(int signo);
void acquire_vt(int signo);
void set_signal_mask(int save);
void mask_signals(void);
void restore_signals(void);
void set_terminal(int print);
void restore_terminal(void);
void get_password(void);
void init_passwords(void);
void print_help(int exitcode);
void clear_screen(void);
void restore_screen(void);
/* Global variables: */
/* Option globals: */
/* This determines whether the default behavior is to lock only the */
/* current VT or all of them. 0 means current, 1 means all. */
extern int o_lock_all;
/* Other globals: */
/* Copy of the VT mode when the program was started */
extern struct vt_mode ovtm;
extern struct termios oterm;
extern int vfd;
extern int is_vt;
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