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Kernel/Devices: Defer creation of SysFS component after the constructor

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Instead of doing so in the constructor, let's do immediately after the
constructor, so we can safely pass a reference of a Device, so the
SysFSDeviceComponent constructor can use that object to identify whether
it's a block device or a character device.
This allows to us to not hold a device in SysFSDeviceComponent with a
RefPtr.
Also, we also call the before_removing method in both SlavePTY::unref
and File::unref, so because Device has that method being overrided, it
can ensure the device is removed always cleanly.
This commit is contained in:
Liav A 2021-09-10 14:44:46 +03:00 • committed by Andreas Kling
parent c545d4ffcb
commit f5de4f24b2
Notes: sideshowbarker 2024-07-18 04:18:25 +09:00
41 changed files with 142 additions and 57 deletions
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5
Kernel/Graphics/FramebufferDevice.cpp
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@ -22,7 +22,10 @@ namespace Kernel {
NonnullRefPtr<FramebufferDevice> FramebufferDevice::create(const GraphicsDevice& adapter, size_t output_port_index, PhysicalAddress paddr, size_t width, size_t height, size_t pitch)
{
return adopt_ref(*new FramebufferDevice(adapter, output_port_index, paddr, width, height, pitch));
auto framebuffer_device_or_error = try_create_device<FramebufferDevice>(adapter, output_port_index, paddr, width, height, pitch);
// FIXME: Find a way to propagate errors
VERIFY(!framebuffer_device_or_error.is_error());
return framebuffer_device_or_error.release_value();
}
KResultOr<Memory::Region*> FramebufferDevice::mmap(Process& process, OpenFileDescription&, Memory::VirtualRange const& range, u64 offset, int prot, bool shared)