RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 19:47:44 +00:00
Code Issues Activity Actions

Kernel: Harvest randomness from various drivers

Browse source 
Random now gets entropy from the following drivers:
- KeyboardDevice
- PATAChannel
- PS2MouseDevice
- E1000NetworkAdapter
- RTL8139NetworkAdapter

Of these devices,  PS2MouseDevice and PATAChannel provide the vast
majority of the entropy.
This commit is contained in:
Peter Elliott 2020-06-24 14:07:28 -06:00 • committed by Andreas Kling
parent 2e8cfe5435
commit af0b2d1d86
12 changed files with 71 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

3
Kernel/Devices/PS2MouseDevice.cpp
View file

@ -81,6 +81,7 @@ void PS2MouseDevice::handle_irq(const RegisterState&)
if (backdoor->vmmouse_is_absolute()) {
IO::in8(I8042_BUFFER);
auto packet = backdoor->receive_mouse_packet();
m_entropy_source.add_random_event(packet);
if (packet.has_value())
m_queue.enqueue(packet.value());
return;
@ -99,6 +100,8 @@ void PS2MouseDevice::handle_irq(const RegisterState&)
#ifdef PS2MOUSE_DEBUG
dbg() << "PS2Mouse: " << m_data[1] << ", " << m_data[2] << " " << ((m_data[0] & 1) ? "Left" : "") << " " << ((m_data[0] & 2) ? "Right" : "") << " (buffered: " << m_queue.size() << ")";
#endif
m_entropy_source.add_random_event(*(u32*)m_data);
parse_data_packet();
};