Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _VT_KERN_H
3#define _VT_KERN_H
4
5/*
6 * this really is an extension of the vc_cons structure in console.c, but
7 * with information needed by the vt package
8 */
9
10#include <linux/vt.h>
11#include <linux/kd.h>
12#include <linux/tty.h>
13#include <linux/mutex.h>
14#include <linux/console_struct.h>
15#include <linux/mm.h>
16#include <linux/consolemap.h>
17#include <linux/notifier.h>
18
19void kd_mksound(unsigned int hz, unsigned int ticks);
20int kbd_rate(struct kbd_repeat *rep);
21
22extern int fg_console, last_console, want_console;
23
24/* console.c */
25
26int vc_allocate(unsigned int console);
27int vc_cons_allocated(unsigned int console);
28int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
29struct vc_data *vc_deallocate(unsigned int console);
30void reset_palette(struct vc_data *vc);
31void do_blank_screen(int entering_gfx);
32void do_unblank_screen(int leaving_gfx);
33void poke_blanked_console(void);
34int con_font_op(struct vc_data *vc, struct console_font_op *op);
35int con_set_cmap(unsigned char __user *cmap);
36int con_get_cmap(unsigned char __user *cmap);
37void scrollback(struct vc_data *vc);
38void scrollfront(struct vc_data *vc, int lines);
39void clear_buffer_attributes(struct vc_data *vc);
40void update_region(struct vc_data *vc, unsigned long start, int count);
41void redraw_screen(struct vc_data *vc, int is_switch);
42#define update_screen(x) redraw_screen(x, 0)
43#define switch_screen(x) redraw_screen(x, 1)
44
45struct tty_struct;
46int tioclinux(struct tty_struct *tty, unsigned long arg);
47
48#ifdef CONFIG_CONSOLE_TRANSLATIONS
49/* consolemap.c */
50
51struct unipair;
52
53int con_set_trans_old(unsigned char __user * table);
54int con_get_trans_old(unsigned char __user * table);
55int con_set_trans_new(unsigned short __user * table);
56int con_get_trans_new(unsigned short __user * table);
57int con_clear_unimap(struct vc_data *vc);
58int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
59int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
60int con_set_default_unimap(struct vc_data *vc);
61void con_free_unimap(struct vc_data *vc);
62int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
63
64#else
65static inline int con_set_trans_old(unsigned char __user *table)
66{
67 return 0;
68}
69static inline int con_get_trans_old(unsigned char __user *table)
70{
71 return -EINVAL;
72}
73static inline int con_set_trans_new(unsigned short __user *table)
74{
75 return 0;
76}
77static inline int con_get_trans_new(unsigned short __user *table)
78{
79 return -EINVAL;
80}
81static inline int con_clear_unimap(struct vc_data *vc)
82{
83 return 0;
84}
85static inline
86int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
87{
88 return 0;
89}
90static inline
91int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
92 struct unipair __user *list)
93{
94 return -EINVAL;
95}
96static inline int con_set_default_unimap(struct vc_data *vc)
97{
98 return 0;
99}
100static inline void con_free_unimap(struct vc_data *vc)
101{
102}
103static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
104{
105}
106static inline
107int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
108{
109 return 0;
110}
111
112#endif
113
114/* vt.c */
115void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
116int vt_waitactive(int n);
117void change_console(struct vc_data *new_vc);
118void reset_vc(struct vc_data *vc);
119int do_unbind_con_driver(const struct consw *csw, int first, int last,
120 int deflt);
121int vty_init(const struct file_operations *console_fops);
122
123extern bool vt_dont_switch;
124extern int default_utf8;
125extern int global_cursor_default;
126
127struct vt_spawn_console {
128 spinlock_t lock;
129 struct pid *pid;
130 int sig;
131};
132extern struct vt_spawn_console vt_spawn_con;
133
134int vt_move_to_console(unsigned int vt, int alloc);
135
136/* Interfaces for VC notification of character events (for accessibility etc) */
137
138struct vt_notifier_param {
139 struct vc_data *vc; /* VC on which the update happened */
140 unsigned int c; /* Printed char */
141};
142
143int register_vt_notifier(struct notifier_block *nb);
144int unregister_vt_notifier(struct notifier_block *nb);
145
146void hide_boot_cursor(bool hide);
147
148/* keyboard provided interfaces */
149int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
150int vt_do_kdskbmode(unsigned int console, unsigned int arg);
151int vt_do_kdskbmeta(unsigned int console, unsigned int arg);
152int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
153 int perm);
154int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
155 unsigned int console);
156int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
157int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm);
158int vt_do_kdgkbmode(unsigned int console);
159int vt_do_kdgkbmeta(unsigned int console);
160void vt_reset_unicode(unsigned int console);
161int vt_get_shift_state(void);
162void vt_reset_keyboard(unsigned int console);
163int vt_get_leds(unsigned int console, int flag);
164int vt_get_kbd_mode_bit(unsigned int console, int bit);
165void vt_set_kbd_mode_bit(unsigned int console, int bit);
166void vt_clr_kbd_mode_bit(unsigned int console, int bit);
167void vt_set_led_state(unsigned int console, int leds);
168void vt_kbd_con_start(unsigned int console);
169void vt_kbd_con_stop(unsigned int console);
170
171void vc_scrolldelta_helper(struct vc_data *c, int lines,
172 unsigned int rolled_over, void *_base, unsigned int size);
173
174#endif /* _VT_KERN_H */