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Deallocate PTY's when they close.

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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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5
Kernel/VirtualFileSystem.cpp
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@@ -510,6 +510,11 @@ void VFS::register_character_device(CharacterDevice& device)
m_character_devices.set(encodedDevice(device.major(), device.minor()), &device);
}
void VFS::unregister_character_device(CharacterDevice& device)
{
m_character_devices.remove(encodedDevice(device.major(), device.minor()));
}
void VFS::for_each_mount(Function<void(const Mount&)> callback) const
{
for (auto& mount : m_mounts) {