1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef _LINUX_VT_H
 3#define _LINUX_VT_H
 4
 5#include <linux/ioctl.h>
 6#include <linux/types.h>
 7
 8/*
 9 * These constants are also useful for user-level apps (e.g., VC
10 * resizing).
11 */
12#define MIN_NR_CONSOLES 1       /* must be at least 1 */
13#define MAX_NR_CONSOLES	63	/* serial lines start at 64 */
14		/* Note: the ioctl VT_GETSTATE does not work for
15		   consoles 16 and higher (since it returns a short) */
16
17/* 0x56 is 'V', to avoid collision with termios and kd */
18
19#define VT_OPENQRY	0x5600	/* find available vt */
20
21struct vt_mode {
22	__u8 mode;		/* vt mode */
23	__u8 waitv;		/* if set, hang on writes if not active */
24	__s16 relsig;		/* signal to raise on release req */
25	__s16 acqsig;		/* signal to raise on acquisition */
26	__s16 frsig;		/* unused (set to 0) */
27};
28#define VT_GETMODE	0x5601	/* get mode of active vt */
29#define VT_SETMODE	0x5602	/* set mode of active vt */
30#define		VT_AUTO		0x00	/* auto vt switching */
31#define		VT_PROCESS	0x01	/* process controls switching */
32#define		VT_ACKACQ	0x02	/* acknowledge switch */
33
34struct vt_stat {
35	__u16 v_active;	/* active vt */
36	__u16 v_signal;	/* signal to send */
37	__u16 v_state;		/* vt bitmask */
38};
39#define VT_GETSTATE	0x5603	/* get global vt state info */
40#define VT_SENDSIG	0x5604	/* signal to send to bitmask of vts */
41
42#define VT_RELDISP	0x5605	/* release display */
43
44#define VT_ACTIVATE	0x5606	/* make vt active */
45#define VT_WAITACTIVE	0x5607	/* wait for vt active */
46#define VT_DISALLOCATE	0x5608  /* free memory associated to vt */
47
48struct vt_sizes {
49	__u16 v_rows;		/* number of rows */
50	__u16 v_cols;		/* number of columns */
51	__u16 v_scrollsize;	/* number of lines of scrollback */
52};
53#define VT_RESIZE	0x5609	/* set kernel's idea of screensize */
54
55struct vt_consize {
56	__u16 v_rows;	/* number of rows */
57	__u16 v_cols;	/* number of columns */
58	__u16 v_vlin;	/* number of pixel rows on screen */
59	__u16 v_clin;	/* number of pixel rows per character */
60	__u16 v_vcol;	/* number of pixel columns on screen */
61	__u16 v_ccol;	/* number of pixel columns per character */
62};
63#define VT_RESIZEX      0x560A  /* set kernel's idea of screensize + more */
64#define VT_LOCKSWITCH   0x560B  /* disallow vt switching */
65#define VT_UNLOCKSWITCH 0x560C  /* allow vt switching */
66#define VT_GETHIFONTMASK 0x560D  /* return hi font mask */
67
68struct vt_event {
69	__u32 event;
70#define VT_EVENT_SWITCH		0x0001	/* Console switch */
71#define VT_EVENT_BLANK		0x0002	/* Screen blank */
72#define VT_EVENT_UNBLANK	0x0004	/* Screen unblank */
73#define VT_EVENT_RESIZE		0x0008	/* Resize display */
74#define VT_MAX_EVENT		0x000F
75	__u32 oldev;		/* Old console */
76	__u32 newev;		/* New console (if changing) */
77	__u32 pad[4];		/* Padding for expansion */
78};
79
80#define VT_WAITEVENT	0x560E	/* Wait for an event */
81
82struct vt_setactivate {
83	__u32 console;
84	struct vt_mode mode;
85};
86
87#define VT_SETACTIVATE	0x560F	/* Activate and set the mode of a console */
88
89/* get console size and cursor position */
90struct vt_consizecsrpos {
91	__u16 con_rows;		/* number of console rows */
92	__u16 con_cols;		/* number of console columns */
93	__u16 csr_row;		/* current cursor's row */
94	__u16 csr_col;		/* current cursor's column */
95};
96#define VT_GETCONSIZECSRPOS	_IOR('V', 0x10, struct vt_consizecsrpos)
97
98#endif /* _LINUX_VT_H */