Quelle vt.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_VT_H
#define _UAPI_LINUX_VT_H

#include <linux/ioctl.h>
#include <linux/types.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 */
  /* 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 {
__u8 mode;  /* vt mode */
__u8 waitv;  /* if set, hang on writes if not active */
__s16 relsig;  /* signal to raise on release req */
__s16 acqsig;  /* signal to raise on acquisition */
__s16 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 {
__u16 v_active; /* active vt */
__u16 v_signal; /* signal to send */
__u16 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 {
__u16 v_rows;  /* number of rows */
__u16 v_cols;  /* number of columns */
__u16 v_scrollsize; /* number of lines of scrollback */
};
#define VT_RESIZE 0x5609 /* set kernel's idea of screensize */

struct vt_consize {
__u16 v_rows; /* number of rows */
__u16 v_cols; /* number of columns */
__u16 v_vlin; /* number of pixel rows on screen */
__u16 v_clin; /* number of pixel rows per character */
__u16 v_vcol; /* number of pixel columns on screen */
__u16 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 {
__u32 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
__u32 oldev;  /* Old console */
__u32 newev;  /* New console (if changing) */
__u32 pad[4];  /* Padding for expansion */
};

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

struct vt_setactivate {
__u32 console;
struct vt_mode mode;
};

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

/* get console size and cursor position */
struct vt_consizecsrpos {
__u16 con_rows;  /* number of console rows */
__u16 con_cols;  /* number of console columns */
__u16 csr_row;  /* current cursor's row */
__u16 csr_col;  /* current cursor's column */
};
#define VT_GETCONSIZECSRPOS _IOR('V', 0x10, struct vt_consizecsrpos)

#endif /* _UAPI_LINUX_VT_H */

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