vt.h

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#ifndef _UAPI_LINUX_VT_H
#define _UAPI_LINUX_VT_H


/*
 * 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 oldev;     /* Old console */
    unsigned int newev;     /* New console (if changing) */
    unsigned int pad[4];        /* Padding for expansion */
};

#define VT_WAITEVENT    0x560E  /* Wait for an event */

struct vt_setactivate {
    unsigned int console;
    struct vt_mode mode;
};

#define VT_SETACTIVATE  0x560F  /* Activate and set the mode of a console */


#define vt_get_kmsg_redirect() vt_kmsg_redirect(-1)

#endif /* _UAPI_LINUX_VT_H */