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[NTUSER] Introduce CloseInputDevice() function to release INPUT_DEVICE_INFO structures (#9562)

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CORE-9818
This commit is contained in:
Hervé Poussineau
2026-09-16 19:02:43 +02:00
parent 401761a5a6
commit 0fa1908d69
1 changed files with 24 additions and 10 deletions
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34
win32ss/user/ntuser/input.c
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@@ -199,6 +199,19 @@ OpenInputDevice(
return STATUS_SUCCESS;
}
static
VOID
CloseInputDevice(
_In_ PINPUT_DEVICE_INFO DeviceInfo)
{
ASSERT(DeviceInfo->Handle);
(void)ZwCancelIoFile(DeviceInfo->Handle, &DeviceInfo->Iosb);
ObCloseHandle(DeviceInfo->Handle, KernelMode);
if (DeviceInfo->Handle == ghKeyboardDevice)
ghKeyboardDevice = NULL;
}
/*
* RawInputThreadMain
*
@@ -207,6 +220,7 @@ OpenInputDevice(
VOID NTAPI
RawInputThreadMain(VOID)
{
PINPUT_DEVICE_INFO DeviceInfo;
NTSTATUS MouStatus = STATUS_UNSUCCESSFUL, KbdStatus = STATUS_UNSUCCESSFUL, Status;
PFILE_OBJECT pKbdDevice = NULL, pMouDevice = NULL;
LARGE_INTEGER ByteOffset;
@@ -432,20 +446,20 @@ RawInputThreadMain(VOID)
}
if (ghMouseDevice)
{
(void)ZwCancelIoFile(ghMouseDevice, &Mouse->Iosb);
ObCloseHandle(ghMouseDevice, KernelMode);
ObDereferenceObject(pMouDevice);
ghMouseDevice = NULL;
}
if (ghKeyboardDevice)
{
(void)ZwCancelIoFile(ghKeyboardDevice, &Keyboard->Iosb);
ObCloseHandle(ghKeyboardDevice, KernelMode);
ObDereferenceObject(pKbdDevice);
ghKeyboardDevice = NULL;
AcquireDeviceInfoListMutex();
while (gpInputDeviceInfo)
{
DeviceInfo = gpInputDeviceInfo;
gpInputDeviceInfo = DeviceInfo->pNextDeviceInfo;
CloseInputDevice(DeviceInfo);
ExFreePoolWithTag(DeviceInfo, USERTAG_PNP);
}
gpInputDeviceInfo = NULL;
ReleaseDeviceInfoListMutex();
ExDeleteResourceLite(gpDeviceInfoListMutex);
ExFreePoolWithTag(gpDeviceInfoListMutex, USERTAG_SYSTEM);