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Kernel: Let MouseDevice and KeyboardDevice write method return EINVAL

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Currently, writing anything to `/dev/mouse0` or `/dev/keyboard0` causes
the Kernel to panic. The reason for this is that
`[Mouse,Keyboard]Device::write` always returns 0, which is explicitly
prohibited by `VERIFY` macro in `Process::sys$write`.  The fix seems
trivial; `write` should return EINVAL instead (as is the case with, for
example, `KCOVDevice`).
This commit is contained in:
Przemysław R. Kusiak 2021-09-18 04:07:19 +02:00 • committed by Idan Horowitz
parent 6e1f6bd684
commit c6e23e45c5
4 changed files with 2 additions and 12 deletions
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5
Kernel/Devices/HID/KeyboardDevice.cpp
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@ -306,11 +306,6 @@ KResultOr<size_t> KeyboardDevice::read(OpenFileDescription&, u64, UserOrKernelBu
return nread;
}
KResultOr<size_t> KeyboardDevice::write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t)
{
return 0;
}
KResult KeyboardDevice::ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg)
{
switch (request) {