include/linux/vt_kern.h

   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
  19 void kd_mksound(unsigned int hz, unsigned int ticks);
  20 int kbd_rate(struct kbd_repeat *rep);
  21
  22 extern int fg_console, last_console, want_console;
  23
  24 /* console.c */
  25
  26 int vc_allocate(unsigned int console);
  27 int vc_cons_allocated(unsigned int console);
  28 int __vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines,
  29                 bool from_user);
  30 struct vc_data *vc_deallocate(unsigned int console);
  31 void reset_palette(struct vc_data *vc);
  32 void do_blank_screen(int entering_gfx);
  33 void do_unblank_screen(int leaving_gfx);
  34 void poke_blanked_console(void);
  35 int con_font_op(struct vc_data *vc, struct console_font_op *op);
  36 int con_set_cmap(unsigned char __user *cmap);
  37 int con_get_cmap(unsigned char __user *cmap);
  38 void scrollback(struct vc_data *vc);
  39 void scrollfront(struct vc_data *vc, int lines);
  40 void clear_buffer_attributes(struct vc_data *vc);
  41 void update_region(struct vc_data *vc, unsigned long start, int count);
  42 void redraw_screen(struct vc_data *vc, int is_switch);
  43 #define update_screen(x) redraw_screen(x, 0)
  44 #define switch_screen(x) redraw_screen(x, 1)
  45
  46 static inline int vc_resize(struct vc_data *vc, unsigned int cols,
  47                             unsigned int lines)
  48 {
  49         return __vc_resize(vc, cols, lines, false);
  50 }
  51
  52 struct tty_struct;
  53 int tioclinux(struct tty_struct *tty, unsigned long arg);
  54
  55 #ifdef CONFIG_CONSOLE_TRANSLATIONS
  56 /* consolemap.c */
  57
  58 struct unipair;
  59
  60 int con_set_trans_old(unsigned char __user * table);
  61 int con_get_trans_old(unsigned char __user * table);
  62 int con_set_trans_new(unsigned short __user * table);
  63 int con_get_trans_new(unsigned short __user * table);
  64 int con_clear_unimap(struct vc_data *vc);
  65 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
  66 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
  67 int con_set_default_unimap(struct vc_data *vc);
  68 void con_free_unimap(struct vc_data *vc);
  69 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
  70
  71 #else
  72 static inline int con_set_trans_old(unsigned char __user *table)
  73 {
  74         return 0;
  75 }
  76 static inline int con_get_trans_old(unsigned char __user *table)
  77 {
  78         return -EINVAL;
  79 }
  80 static inline int con_set_trans_new(unsigned short __user *table)
  81 {
  82         return 0;
  83 }
  84 static inline int con_get_trans_new(unsigned short __user *table)
  85 {
  86         return -EINVAL;
  87 }
  88 static inline int con_clear_unimap(struct vc_data *vc)
  89 {
  90         return 0;
  91 }
  92 static inline
  93 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
  94 {
  95         return 0;
  96 }
  97 static inline
  98 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
  99                    struct unipair __user *list)
 100 {
 101         return -EINVAL;
 102 }
 103 static inline int con_set_default_unimap(struct vc_data *vc)
 104 {
 105         return 0;
 106 }
 107 static inline void con_free_unimap(struct vc_data *vc)
 108 {
 109 }
 110 static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
 111 {
 112 }
 113 static inline
 114 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
 115 {
 116         return 0;
 117 }
 118
 119 #endif
 120
 121 /* vt.c */
 122 void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
 123 int vt_waitactive(int n);
 124 void change_console(struct vc_data *new_vc);
 125 void reset_vc(struct vc_data *vc);
 126 int do_unbind_con_driver(const struct consw *csw, int first, int last,
 127                          int deflt);
 128 int vty_init(const struct file_operations *console_fops);
 129
 130 extern bool vt_dont_switch;
 131 extern int default_utf8;
 132 extern int global_cursor_default;
 133
 134 struct vt_spawn_console {
 135         spinlock_t lock;
 136         struct pid *pid;
 137         int sig;
 138 };
 139 extern struct vt_spawn_console vt_spawn_con;
 140
 141 int vt_move_to_console(unsigned int vt, int alloc);
 142
 143 /* Interfaces for VC notification of character events (for accessibility etc) */
 144
 145 struct vt_notifier_param {
 146         struct vc_data *vc;     /* VC on which the update happened */
 147         unsigned int c;         /* Printed char */
 148 };
 149
 150 int register_vt_notifier(struct notifier_block *nb);
 151 int unregister_vt_notifier(struct notifier_block *nb);
 152
 153 void hide_boot_cursor(bool hide);
 154
 155 /* keyboard  provided interfaces */
 156 int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
 157 int vt_do_kdskbmode(unsigned int console, unsigned int arg);
 158 int vt_do_kdskbmeta(unsigned int console, unsigned int arg);
 159 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
 160                           int perm);
 161 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
 162                      unsigned int console);
 163 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
 164 int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm);
 165 int vt_do_kdgkbmode(unsigned int console);
 166 int vt_do_kdgkbmeta(unsigned int console);
 167 void vt_reset_unicode(unsigned int console);
 168 int vt_get_shift_state(void);
 169 void vt_reset_keyboard(unsigned int console);
 170 int vt_get_leds(unsigned int console, int flag);
 171 int vt_get_kbd_mode_bit(unsigned int console, int bit);
 172 void vt_set_kbd_mode_bit(unsigned int console, int bit);
 173 void vt_clr_kbd_mode_bit(unsigned int console, int bit);
 174 void vt_set_led_state(unsigned int console, int leds);
 175 void vt_kbd_con_start(unsigned int console);
 176 void vt_kbd_con_stop(unsigned int console);
 177
 178 #endif /* _VT_KERN_H */