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https://github.com/RGBCube/serenity
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e9dda8d592
Okay, one "dunce hat" point for me. The new PTY majors conflicted with PATAChannel. Now they are 200 for master and 201 for slave, not used by anything else.. I hope!
73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
#include "SlavePTY.h"
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#include "MasterPTY.h"
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#include <Kernel/FileSystem/DevPtsFS.h>
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#include <Kernel/Process.h>
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//#define SLAVEPTY_DEBUG
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SlavePTY::SlavePTY(MasterPTY& master, unsigned index)
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: TTY(201, index)
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, m_master(master)
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, m_index(index)
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{
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sprintf(m_tty_name, "/dev/pts/%u", m_index);
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set_uid(current->process().uid());
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set_gid(current->process().gid());
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DevPtsFS::register_slave_pty(*this);
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set_size(80, 25);
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}
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SlavePTY::~SlavePTY()
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{
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#ifdef SLAVEPTY_DEBUG
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dbgprintf("~SlavePTY(%u)\n", m_index);
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#endif
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DevPtsFS::unregister_slave_pty(*this);
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}
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StringView SlavePTY::tty_name() const
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{
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return m_tty_name;
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}
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void SlavePTY::echo(u8 ch)
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{
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if (should_echo_input()) {
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m_master->on_slave_write(&ch, 1);
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}
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}
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void SlavePTY::on_master_write(const u8* buffer, ssize_t size)
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{
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for (ssize_t i = 0; i < size; ++i)
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emit(buffer[i]);
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}
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ssize_t SlavePTY::on_tty_write(const u8* data, ssize_t size)
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{
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return m_master->on_slave_write(data, size);
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}
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bool SlavePTY::can_write(const FileDescription&) const
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{
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return m_master->can_write_from_slave();
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}
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bool SlavePTY::can_read(const FileDescription& description) const
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{
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if (m_master->is_closed())
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return true;
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return TTY::can_read(description);
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}
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ssize_t SlavePTY::read(FileDescription& description, u8* buffer, ssize_t size)
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{
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if (m_master->is_closed())
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return 0;
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return TTY::read(description, buffer, size);
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}
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void SlavePTY::close()
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{
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m_master->notify_slave_closed({});
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}
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