diff options
| author | Yuri Benditovich <yuri.benditovich@daynix.com> | 2020-01-02 15:05:29 +0200 |
|---|---|---|
| committer | Yan Vugenfirer <yan@daynix.com> | 2020-01-02 21:47:41 +0200 |
| commit | 4de57a9ff6d3a52316889a7901610ffab56c49fb (patch) | |
| tree | 791562f7f4906c9820721b157ab0f1f16df16881 | |
| parent | 14dd054ae3b332337a652c34ee57b681e710ccbd (diff) | |
driver: pass current process id in file close flow
https://github.com/daynix/UsbDk/issues/81
OnClose -> RemoveRedirect -> NotifyRedirectorRemovalStarted
NotifyRedirectorRemovalStarted passes process id to ModifyOne
in order to avoid stopping redirection if another not related
process just opens the filter device and then closes it.
Example (before this commit):
Start VM and use remote-viewer to it.
Separate application 'App' registers notification on USB
device interface arrival. When new device comes, the application
opens a file using symbolic link name and closes it.
Redirect USB device to VM.
The UsbDk forces device to be reenumerated.
Open-close operation from the 'App' unexpectedly discards
device redirection.
After this commit: because the 'App' process is not an owner
of the redirection, OnClose will not cause removal of the
redirection.
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
| -rw-r--r-- | UsbDk/ControlDevice.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/UsbDk/ControlDevice.cpp b/UsbDk/ControlDevice.cpp index 74cd2c4..75b09e3 100644 --- a/UsbDk/ControlDevice.cpp +++ b/UsbDk/ControlDevice.cpp @@ -1081,7 +1081,8 @@ bool CUsbDkControlDevice::NotifyRedirectorAttached(CRegText *DeviceID, CRegText bool CUsbDkControlDevice::NotifyRedirectorRemovalStarted(const USB_DK_DEVICE_ID &ID) { - return m_Redirections.ModifyOne(&ID, [](CUsbDkRedirection *R){ R->NotifyRedirectionRemovalStarted(); }); + ULONG pid = (ULONG)(ULONG_PTR)PsGetCurrentProcessId(); + return m_Redirections.ModifyOne(&ID, [](CUsbDkRedirection *R){ R->NotifyRedirectionRemovalStarted(); }, pid); } bool CUsbDkControlDevice::WaitForDetachment(const USB_DK_DEVICE_ID &ID) |