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kernel: tty: implement tty input using line disciplines

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max 🍓
2023-06-11 16:47:33 +01:00
parent 7308fd98fb
commit a7c28e983c
6 changed files with 484 additions and 148 deletions
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143
init/main.c
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@@ -21,120 +21,6 @@ extern unsigned long get_rflags(void);
extern char __pstart[], __pend[];
static char keycode_chars[] = {
[KEY_UNKNOWN] = ' ',
[KEY_A] = 'a',
[KEY_B] = 'b',
[KEY_C] = 'c',
[KEY_D] = 'd',
[KEY_E] = 'e',
[KEY_F] = 'f',
[KEY_G] = 'g',
[KEY_H] = 'h',
[KEY_I] = 'i',
[KEY_J] = 'j',
[KEY_K] = 'k',
[KEY_L] = 'l',
[KEY_M] = 'm',
[KEY_N] = 'n',
[KEY_O] = 'o',
[KEY_P] = 'p',
[KEY_Q] = 'q',
[KEY_R] = 'r',
[KEY_S] = 's',
[KEY_T] = 't',
[KEY_U] = 'u',
[KEY_V] = 'v',
[KEY_W] = 'w',
[KEY_X] = 'x',
[KEY_Y] = 'y',
[KEY_Z] = 'z',
[KEY_KEY_1] = '1',
[KEY_KEY_2] = '2',
[KEY_KEY_3] = '3',
[KEY_KEY_4] = '4',
[KEY_KEY_5] = '5',
[KEY_KEY_6] = '6',
[KEY_KEY_7] = '7',
[KEY_KEY_8] = '8',
[KEY_KEY_9] = '9',
[KEY_KEY_0] = '0',
[KEY_ENTER] = '\n',
[KEY_ESCAPE] = 0,
[KEY_BACKSPACE] = '\b',
[KEY_TAB] = ' ',
[KEY_SPACE] = ' ',
[KEY_MINUS] = '-',
[KEY_EQUALS] = '=',
[KEY_LEFT_BRACE] = '[',
[KEY_RIGHT_BRACE] = ']',
[KEY_BACKSLASH] = '\\',
[KEY_NON_US_HASH] = 0,
[KEY_SEMICOLON] = ';',
[KEY_APOSTROPHE] = '\'',
[KEY_GRAVE_ACCENT] = 0,
[KEY_COMMA] = ',',
[KEY_DOT] = '.',
[KEY_SLASH] = '/',
[KEY_CAPS_LOCK] = 0,
[KEY_F1] = 0,
[KEY_F2] = 0,
[KEY_F3] = 0,
[KEY_F4] = 0,
[KEY_F5] = 0,
[KEY_F6] = 0,
[KEY_F7] = 0,
[KEY_F8] = 0,
[KEY_F9] = 0,
[KEY_F10] = 0,
[KEY_F11] = 0,
[KEY_F12] = 0,
[KEY_PRINT_SCREEN] = 0,
[KEY_SCROLL_LOCK] = 0,
[KEY_PAUSE] = 0,
[KEY_INSERT] = 0,
[KEY_HOME] = 0,
[KEY_PAGE_UP] = 0,
[KEY_DELETE] = 0,
[KEY_END] = 0,
[KEY_PAGE_DOWN] = 0,
[KEY_RIGHT] = 0,
[KEY_LEFT] = 0,
[KEY_DOWN] = 0,
[KEY_UP] = 0,
[KEY_NUM_LOCK] = 0,
[KEY_KEYPAD_SLASH] = '/',
[KEY_KEYPAD_ASTERISK] = '*',
[KEY_KEYPAD_MINUS] = '-',
[KEY_KEYPAD_PLUS] = '+',
[KEY_KEYPAD_ENTER] = '\n',
[KEY_KEYPAD_1] = '1',
[KEY_KEYPAD_2] = '2',
[KEY_KEYPAD_3] = '3',
[KEY_KEYPAD_4] = '4',
[KEY_KEYPAD_5] = '5',
[KEY_KEYPAD_6] = '6',
[KEY_KEYPAD_7] = '7',
[KEY_KEYPAD_8] = '8',
[KEY_KEYPAD_9] = '9',
[KEY_KEYPAD_0] = '0',
[KEY_KEYPAD_DOT] = '.',
[KEY_NON_US_BACKSLASH] = 0,
[KEY_KEYPAD_EQUALS] = '=',
[KEY_MENU] = 0,
[KEY_LEFT_CTRL] = 0,
[KEY_LEFT_SHIFT] = 0,
[KEY_LEFT_ALT] = 0,
[KEY_LEFT_META] = 0,
[KEY_RIGHT_CTRL] = 0,
[KEY_RIGHT_SHIFT] = 0,
[KEY_RIGHT_ALT] = 0,
[KEY_RIGHT_META] = 0,
[KEY_MEDIA_MUTE] = 0,
[KEY_MEDIA_VOLUME_INCREMENT] = 0,
[KEY_MEDIA_VOLUME_DECREMENT] = 0,
};
void print_kernel_banner(void)
{
printk("Socks kernel version " BUILD_ID);
@@ -210,7 +96,7 @@ void kernel_init(uintptr_t arg)
struct object *tty0;
status = object_get("/dev/tty/tty0", &tty0);
if (status == KERN_OK) {
tty_set_printk_output(cast_to_device(tty0));
tty_set_foreground(cast_to_device(tty0));
}
create_kernel_thread(background_thread);
@@ -220,31 +106,8 @@ void kernel_init(uintptr_t arg)
run_all_tests();
status = object_get("/dev/input/input0", &kbd);
if (status != KERN_OK) {
printk("no keyboard available");
hang();
}
while (1) {
struct input_event ev;
size_t r;
status = object_read(kbd, &ev, sizeof ev, &r, 0);
if (status != KERN_OK || r != sizeof ev) {
printk("keyboard read error: %s", kern_status_string(status));
break;
}
if (ev.ev_type != INPUT_TYPE_KEY || ev.ev_key.state != INPUT_KEYSTATE_DOWN) {
continue;
}
char c = keycode_chars[ev.ev_key.key];
if (c == 0) {
continue;
}
putchar(c);
if (status == KERN_OK) {
tty_connect_foreground_input_device(cast_to_device(kbd));
}
hang();