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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX_VT_H
2#define _LINUX_VT_H
3
Samuel Thibaultb293d752007-10-18 23:39:17 -07004
Jon Smirla8f340e2006-07-10 04:44:12 -07005/*
6 * These constants are also useful for user-level apps (e.g., VC
7 * resizing).
8 */
9#define MIN_NR_CONSOLES 1 /* must be at least 1 */
10#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
11#define MAX_NR_USER_CONSOLES 63 /* must be root to allocate above this */
12 /* Note: the ioctl VT_GETSTATE does not work for
13 consoles 16 and higher (since it returns a short) */
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015/* 0x56 is 'V', to avoid collision with termios and kd */
16
17#define VT_OPENQRY 0x5600 /* find available vt */
18
19struct 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 */
Greg Kroah-Hartman87a6aca2010-03-15 17:14:15 -070030#define VT_ACKACQ 0x02 /* acknowledge switch */
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32struct 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
46struct 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
53struct 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 */
Samuel Thibault533475d2006-08-27 01:23:39 -070064#define VT_GETHIFONTMASK 0x560D /* return hi font mask */
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Alan Cox8b92e872009-09-19 13:13:24 -070066struct 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
Alan Cox308efab2009-11-19 13:30:36 +000073 unsigned int oldev; /* Old console */
74 unsigned int newev; /* New console (if changing) */
Alan Cox8b92e872009-09-19 13:13:24 -070075 unsigned int pad[4]; /* Padding for expansion */
76};
77
78#define VT_WAITEVENT 0x560E /* Wait for an event */
79
Alan Coxd3b5cff2009-09-19 13:13:26 -070080struct 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
Bernhard Walle5d0bb2c2009-12-17 15:27:11 -080087#ifdef __KERNEL__
88
Bernhard Walle5ada9182009-12-14 18:00:43 -080089#ifdef CONFIG_VT_CONSOLE
90
91extern int vt_kmsg_redirect(int new);
92
93#else
94
95static inline int vt_kmsg_redirect(int new)
96{
97 return 0;
98}
99
100#endif
101
Bernhard Walle5d0bb2c2009-12-17 15:27:11 -0800102#endif /* __KERNEL__ */
103
Bernhard Walle5ada9182009-12-14 18:00:43 -0800104#define vt_get_kmsg_redirect() vt_kmsg_redirect(-1)
105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106#endif /* _LINUX_VT_H */