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TTY: Flush input on signal character.

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We now flush the input when we recieve a signal character.
This can be disabled using the newly implemented NOFLSH
attribute.
This commit is contained in:
Drew Stratford 2019-11-02 03:24:14 +13:00 • committed by Andreas Kling
parent 233ea7eb1d
commit b880f1928a
2 changed files with 11 additions and 0 deletions
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9
Kernel/TTY/TTY.cpp
View file

@ -109,6 +109,9 @@ bool TTY::is_werase(u8 ch) const
void TTY::emit(u8 ch)
{
if (should_generate_signals()) {
if (should_flush_on_signal())
flush_input();
if (ch == m_termios.c_cc[VINTR]) {
dbg() << tty_name() << ": VINTR pressed!";
generate_signal(SIGINT);
@ -214,6 +217,12 @@ void TTY::generate_signal(int signal)
});
}
void TTY::flush_input()
{
m_available_lines = 0;
m_input_buffer.clear();
}
void TTY::set_termios(const termios& t)
{
m_termios = t;

2
Kernel/TTY/TTY.h
View file

@ -28,6 +28,7 @@ public:
void set_termios(const termios&);
bool should_generate_signals() const { return m_termios.c_lflag & ISIG; }
bool should_flush_on_signal() const { return !(m_termios.c_lflag & NOFLSH); }
bool should_echo_input() const { return m_termios.c_lflag & ECHO; }
bool in_canonical_mode() const { return m_termios.c_lflag & ICANON; }
@ -46,6 +47,7 @@ protected:
void do_backspace();
void erase_word();
void kill_line();
void flush_input();
bool is_eol(u8) const;
bool is_eof(u8) const;