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#ifndef _LINUX_VT_H
#define _LINUX_VT_H
#ifdef __KERNEL__
struct notifier_block;
struct vt_notifier_param {
struct vc_data *vc; /* VC on which the update happened */
unsigned int c; /* Printed char */
};
extern int register_vt_notifier(struct notifier_block *nb);
extern int unregister_vt_notifier(struct notifier_block *nb);
#endif
/*
* These constants are also useful for user-level apps (e.g., VC
* resizing).
*/
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
#define MAX_NR_USER_CONSOLES 63 /* must be root to allocate above this */
/* Note: the ioctl VT_GETSTATE does not work for
consoles 16 and higher (since it returns a short) */
/* 0x56 is 'V', to avoid collision with termios and kd */
#define VT_OPENQRY 0x5600 /* find available vt */
struct vt_mode {
char mode; /* vt mode */
char waitv; /* if set, hang on writes if not active */
short relsig; /* signal to raise on release req */
short acqsig; /* signal to raise on acquisition */
short frsig; /* unused (set to 0) */
};
#define VT_GETMODE 0x5601 /* get mode of active vt */
#define VT_SETMODE 0x5602 /* set mode of active vt */
#define VT_AUTO 0x00 /* auto vt switching */
#define VT_PROCESS 0x01 /* process controls switching */
#define VT_ACKACQ 0x02 /* acknowledge switch */
struct vt_stat {
unsigned short v_active; /* active vt */
unsigned short v_signal; /* signal to send */
unsigned short v_state; /* vt bitmask */
};
#define VT_GETSTATE 0x5603 /* get global vt state info */
#define VT_SENDSIG 0x5604 /* signal to send to bitmask of vts */
#define VT_RELDISP 0x5605 /* release display */
#define VT_ACTIVATE 0x5606 /* make vt active */
#define VT_WAITACTIVE 0x5607 /* wait for vt active */
#define VT_DISALLOCATE 0x5608 /* free memory associated to vt */
struct vt_sizes {
unsigned short v_rows; /* number of rows */
unsigned short v_cols; /* number of columns */
unsigned short v_scrollsize; /* number of lines of scrollback */
};
#define VT_RESIZE 0x5609 /* set kernel's idea of screensize */
struct vt_consize {
unsigned short v_rows; /* number of rows */
unsigned short v_cols; /* number of columns */
unsigned short v_vlin; /* number of pixel rows on screen */
unsigned short v_clin; /* number of pixel rows per character */
unsigned short v_vcol; /* number of pixel columns on screen */
unsigned short v_ccol; /* number of pixel columns per character */
};
#define VT_RESIZEX 0x560A /* set kernel's idea of screensize + more */
#define VT_LOCKSWITCH 0x560B /* disallow vt switching */
#define VT_UNLOCKSWITCH 0x560C /* allow vt switching */
#define VT_GETHIFONTMASK 0x560D /* return hi font mask */
struct vt_event {
unsigned int event;
#define VT_EVENT_SWITCH 0x0001 /* Console switch */
#define VT_EVENT_BLANK 0x0002 /* Screen blank */
#define VT_EVENT_UNBLANK 0x0004 /* Screen unblank */
#define VT_EVENT_RESIZE 0x0008 /* Resize display */
#define VT_MAX_EVENT 0x000F
unsigned int old; /* Old console */
unsigned int new; /* New console (if changing) */
unsigned int pad[4]; /* Padding for expansion */
};
#define VT_WAITEVENT 0x560E /* Wait for an event */
#endif /* _LINUX_VT_H */
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