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Kernel: Fix pseudo terminal writability

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Bananymous
2025-06-06 11:09:50 +03:00
parent a7e20d6e85
commit b668173cba
8 changed files with 63 additions and 30 deletions
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20
kernel/kernel/Terminal/PseudoTerminal.cpp
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@@ -130,6 +130,9 @@ namespace Kernel
m_buffer_size -= to_copy;
m_buffer_tail = (m_buffer_tail + to_copy) % m_buffer->size();
if (auto slave = m_slave.lock())
slave->m_write_blocker.unblock();
epoll_notify(EPOLLOUT);
return to_copy;
@@ -139,12 +142,18 @@ namespace Kernel
{
auto slave = m_slave.lock();
if (!slave)
return BAN::Error::from_errno(ENODEV);
return BAN::Error::from_errno(EIO);
for (size_t i = 0; i < buffer.size(); i++)
slave->handle_input_byte(buffer[i]);
return buffer.size();
}
void PseudoTerminalMaster::on_close(int)
{
if (auto slave = m_slave.lock())
slave->m_write_blocker.unblock();
}
BAN::ErrorOr<long> PseudoTerminalMaster::ioctl_impl(int request, void* argument)
{
auto slave = m_slave.lock();
@@ -186,6 +195,15 @@ namespace Kernel
return false;
}
bool PseudoTerminalSlave::can_write_impl() const
{
auto master = m_master.lock();
if (!master)
return false;
SpinLockGuard _(master->m_buffer_lock);
return master->m_buffer_size < master->m_buffer->size();
}
BAN::ErrorOr<long> PseudoTerminalSlave::ioctl_impl(int request, void* argument)
{
switch (request)