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Kernel: Get RefPtr<Device> from the DeviceManagement::get_device method
Instead of returning a raw pointer, which could be technically invalid when using it in the caller function, we return a valid RefPtr of such device. This ensures that the code in DevPtsFS is now safe from a rare race condition in which the SlavePTY device is gone but we still have a pointer to it.
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6 changed files with 24 additions and 16 deletions
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@ -41,7 +41,7 @@ public:
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void for_each(Function<void(Device&)>);
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ErrorOr<void> try_for_each(Function<ErrorOr<void>(Device&)>);
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Device* get_device(MajorNumber major, MinorNumber minor);
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RefPtr<Device> get_device(MajorNumber major, MinorNumber minor);
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NullDevice const& null_device() const;
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NullDevice& null_device();
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