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#include "SlavePTY.h"
#include "MasterPTY.h"
#include <Kernel/FileSystem/DevPtsFS.h>
#include <Kernel/Process.h>
//#define SLAVEPTY_DEBUG
SlavePTY::SlavePTY(MasterPTY& master, unsigned index)
: TTY(201, index)
, m_master(master)
, m_index(index)
{
sprintf(m_tty_name, "/dev/pts/%u", m_index);
set_uid(current->process().uid());
set_gid(current->process().gid());
DevPtsFS::register_slave_pty(*this);
set_size(80, 25);
}
SlavePTY::~SlavePTY()
{
#ifdef SLAVEPTY_DEBUG
dbgprintf("~SlavePTY(%u)\n", m_index);
#endif
DevPtsFS::unregister_slave_pty(*this);
}
StringView SlavePTY::tty_name() const
{
return m_tty_name;
}
void SlavePTY::echo(u8 ch)
{
if (should_echo_input()) {
m_master->on_slave_write(&ch, 1);
}
}
void SlavePTY::on_master_write(const u8* buffer, ssize_t size)
{
for (ssize_t i = 0; i < size; ++i)
emit(buffer[i]);
}
ssize_t SlavePTY::on_tty_write(const u8* data, ssize_t size)
{
return m_master->on_slave_write(data, size);
}
bool SlavePTY::can_write(const FileDescription&) const
{
return m_master->can_write_from_slave();
}
bool SlavePTY::can_read(const FileDescription& description) const
{
if (m_master->is_closed())
return true;
return TTY::can_read(description);
}
ssize_t SlavePTY::read(FileDescription& description, u8* buffer, ssize_t size)
{
if (m_master->is_closed())
return 0;
return TTY::read(description, buffer, size);
}
void SlavePTY::close()
{
m_master->notify_slave_closed({});
}
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