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#include "SlavePTY.h"
#include "MasterPTY.h"
#include "DevPtsFS.h"
#include <Kernel/Process.h>
//#define SLAVEPTY_DEBUG
SlavePTY::SlavePTY(MasterPTY& master, unsigned index)
: TTY(11, index)
, m_master(master)
, m_index(index)
{
set_uid(current->process().uid());
set_gid(current->process().gid());
DevPtsFS::the().register_slave_pty(*this);
set_size(80, 25);
}
SlavePTY::~SlavePTY()
{
#ifdef SLAVEPTY_DEBUG
dbgprintf("~SlavePTY(%u)\n", m_index);
#endif
DevPtsFS::the().unregister_slave_pty(*this);
}
String SlavePTY::tty_name() const
{
return String::format("/dev/pts/%u", m_index);
}
void SlavePTY::on_master_write(const byte* buffer, ssize_t size)
{
for (ssize_t i = 0; i < size; ++i)
emit(buffer[i]);
}
ssize_t SlavePTY::on_tty_write(const byte* data, ssize_t size)
{
return m_master->on_slave_write(data, size);
}
bool SlavePTY::can_write(Process&) const
{
return m_master->can_write_from_slave();
}
bool SlavePTY::can_read(Process& process) const
{
if (m_master->is_closed())
return true;
return TTY::can_read(process);
}
ssize_t SlavePTY::read(Process& process, byte* buffer, ssize_t size)
{
if (m_master->is_closed())
return 0;
return TTY::read(process, buffer, size);
}
void SlavePTY::close()
{
m_master->notify_slave_closed(Badge<SlavePTY>());
}
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