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Deallocate PTY's when they close.

Browse source 
This required a fair bit of plumbing. The CharacterDevice::close() virtual
will now be closed by ~FileDescriptor(), allowing device implementations to
do custom cleanup at that point.

One big problem remains: if the master PTY is closed before the slave PTY,
we go into crashy land.
This commit is contained in:
Andreas Kling 2019-01-30 18:26:19 +01:00
parent 027d26cd5d
commit b4e478aa50
19 changed files with 104 additions and 12 deletions
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6
Kernel/SlavePTY.cpp
View file

@ -15,6 +15,7 @@ SlavePTY::SlavePTY(MasterPTY& master, unsigned index)
SlavePTY::~SlavePTY()
{
DevPtsFS::the().unregister_slave_pty(*this);
VFS::the().unregister_character_device(*this);
}
String SlavePTY::tty_name() const
@ -37,3 +38,8 @@ bool SlavePTY::can_write(Process&) const
{
return m_master.can_write_from_slave();
}
void SlavePTY::close()
{
m_master.notify_slave_closed(Badge<SlavePTY>());
}