ladybird/Kernel/SlavePTY.cpp
Andreas Kling b896d4b237 PTY: Disallow infinite writing to slaves.
This way we don't buffer ungodly amounts of output in the kernel when doing
e.g "cat /dev/random" on a PTY.
2019-01-25 00:13:54 +01:00

38 lines
669 B
C++

#include "SlavePTY.h"
#include "MasterPTY.h"
SlavePTY::SlavePTY(MasterPTY& master, unsigned index)
: TTY(11, index)
, m_master(master)
, m_index(index)
{
set_size(80, 25);
}
SlavePTY::~SlavePTY()
{
}
String SlavePTY::tty_name() const
{
char buffer[32];
ksprintf(buffer, "/dev/pts%u", m_index);
return buffer;
}
void SlavePTY::on_master_write(const byte* buffer, size_t size)
{
for (size_t i = 0; i < size; ++i)
emit(buffer[i]);
}
void SlavePTY::on_tty_write(const byte* data, size_t size)
{
m_master.on_slave_write(data, size);
}
bool SlavePTY::can_write(Process&) const
{
return m_master.can_write_from_slave();
}