mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:02:45 +00:00
8cbb7f101f
This will allow us to implement different behaviors depending on the role of the descriptor a File is being accessed through.
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
#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(11, index)
|
|
, m_master(master)
|
|
, m_index(index)
|
|
{
|
|
m_tty_name = String::format("/dev/pts/%u", m_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 m_tty_name;
|
|
}
|
|
|
|
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(FileDescriptor&) const
|
|
{
|
|
return m_master->can_write_from_slave();
|
|
}
|
|
|
|
bool SlavePTY::can_read(FileDescriptor& descriptor) const
|
|
{
|
|
if (m_master->is_closed())
|
|
return true;
|
|
return TTY::can_read(descriptor);
|
|
}
|
|
|
|
ssize_t SlavePTY::read(FileDescriptor& descriptor, byte* buffer, ssize_t size)
|
|
{
|
|
if (m_master->is_closed())
|
|
return 0;
|
|
return TTY::read(descriptor, buffer, size);
|
|
}
|
|
|
|
void SlavePTY::close()
|
|
{
|
|
m_master->notify_slave_closed(Badge<SlavePTY>());
|
|
}
|