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Kernel: Writing to a slave PTY should yield EIO if the master is closed.

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This commit is contained in:
Andreas Kling 2019-02-05 13:09:01 +01:00
parent 2a0700af9a
commit 0669ef8977
7 changed files with 14 additions and 8 deletions
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7
Kernel/MasterPTY.cpp
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@ -61,13 +61,18 @@ void MasterPTY::notify_slave_closed(Badge<SlavePTY>)
m_slave = nullptr;
}
void MasterPTY::on_slave_write(const byte* data, size_t size)
ssize_t MasterPTY::on_slave_write(const byte* data, size_t size)
{
if (m_closed)
return -EIO;
m_buffer.write(data, size);
return size;
}
bool MasterPTY::can_write_from_slave() const
{
if (m_closed)
return true;
return m_buffer.bytes_in_write_buffer() < 4096;
}