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dll: fsctl: FspFsctlStartService

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This commit is contained in:
Bill Zissimopoulos 2016-05-04 16:06:14 -07:00
parent df5d2d6e87
commit cbb7d943bd
1 changed files with 66 additions and 0 deletions
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66
src/dll/fsctl.c
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@ -21,6 +21,68 @@
#define PREFIXW L"" FSP_FSCTL_VOLUME_PARAMS_PREFIX
#define PREFIXW_SIZE (sizeof PREFIXW - sizeof(WCHAR))
NTSTATUS FspFsctlStartService(VOID)
{
PWSTR DriverName = L"" FSP_FSCTL_DRIVER_NAME;
SC_HANDLE ScmHandle = 0;
SC_HANDLE SvcHandle = 0;
SERVICE_STATUS ServiceStatus;
DWORD LastError;
NTSTATUS Result;
ScmHandle = OpenSCManagerW(0, 0, 0);
if (0 == ScmHandle)
{
Result = FspNtStatusFromWin32(GetLastError());
goto exit;
}
SvcHandle = OpenServiceW(ScmHandle, DriverName, SERVICE_QUERY_STATUS | SERVICE_START);
if (0 == SvcHandle)
{
Result = FspNtStatusFromWin32(GetLastError());
goto exit;
}
if (!StartServiceW(SvcHandle, 0, 0))
{
LastError = GetLastError();
if (ERROR_SERVICE_ALREADY_RUNNING != LastError)
Result = FspNtStatusFromWin32(LastError);
else
Result = STATUS_SUCCESS;
goto exit;
}
/* Poll until the service is running! Yes, that's the best we can do! */
Result = STATUS_DRIVER_UNABLE_TO_LOAD;
for (DWORD Timeout = 500, N = 20, I = 0; N > I; I++)
/* wait up to 500ms * 20 = 10000ms = 10s */
{
if (!QueryServiceStatus(SvcHandle, &ServiceStatus))
{
Result = FspNtStatusFromWin32(GetLastError());
goto exit;
}
if (SERVICE_RUNNING == ServiceStatus.dwCurrentState)
{
Result = STATUS_SUCCESS;
break;
}
Sleep(Timeout);
}
exit:
if (0 != SvcHandle)
CloseServiceHandle(SvcHandle);
if (0 != ScmHandle)
CloseServiceHandle(ScmHandle);
return Result;
}
FSP_API NTSTATUS FspFsctlCreateVolume(PWSTR DevicePath,
const FSP_FSCTL_VOLUME_PARAMS *VolumeParams,
PWCHAR VolumeNameBuf, SIZE_T VolumeNameSize,
@ -62,6 +124,10 @@ FSP_API NTSTATUS FspFsctlCreateVolume(PWSTR DevicePath,
}
*DevicePathPtr = L'\0';
Result = FspFsctlStartService();
if (!NT_SUCCESS(Result))
return Result;
VolumeHandle = CreateFileW(DevicePathBuf,
0, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
if (INVALID_HANDLE_VALUE == VolumeHandle)