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