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385 lines
9.2 KiB
385 lines
9.2 KiB
/*++
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Copyright (c) 1995-2000 Microsoft Corporation
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Module Name:
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srventry.c
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Abstract:
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This module contains the main entry for the User-mode Plug-and-Play Service.
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It also contains the service control handler and service status update
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routines.
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Author:
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Paula Tomlinson (paulat) 6-8-1995
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Environment:
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User-mode only.
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Revision History:
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8-June-1995 paulat
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Creation and initial implementation.
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--*/
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//
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// includes
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//
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#include "precomp.h"
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#include "umpnpi.h"
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#include <svcsp.h>
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//
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// private prototypes
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//
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DWORD
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PnPControlHandlerEx(
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IN DWORD dwControl,
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IN DWORD dwEventType,
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IN LPVOID lpEventData,
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IN LPVOID lpContext
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);
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VOID
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PnPServiceStatusUpdate(
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SERVICE_STATUS_HANDLE hSvcHandle,
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DWORD dwState,
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DWORD dwCheckPoint,
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DWORD dwExitCode
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);
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//
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// global data
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//
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PSVCS_GLOBAL_DATA PnPGlobalData = NULL;
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HANDLE PnPGlobalSvcRefHandle = NULL;
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DWORD CurrentServiceState = SERVICE_START_PENDING;
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SERVICE_STATUS_HANDLE hSvcHandle = 0;
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VOID
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SVCS_ENTRY_POINT(
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DWORD argc,
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LPWSTR argv[],
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PSVCS_GLOBAL_DATA SvcsGlobalData,
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HANDLE SvcRefHandle
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)
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/*++
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Routine Description:
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This is the main routine for the User-mode Plug-and-Play Service. It
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registers itself as an RPC server and notifies the Service Controller
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of the PNP service control entry point.
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Arguments:
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argc, argv - Command-line arguments, not used.
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SvcsGlobalData - Global data for services running in services.exe that
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contains function entry points and pipe name for
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establishing an RPC server interface for this service.
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SvcRefHandle - Service reference handle, not used.
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Return Value:
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None.
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Note:
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None.
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--*/
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{
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DWORD Status;
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HANDLE hThread;
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DWORD ThreadID;
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UNREFERENCED_PARAMETER(argc);
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UNREFERENCED_PARAMETER(argv);
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//
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// Save the global data and service reference handle in global variables
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//
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PnPGlobalSvcRefHandle = SvcRefHandle;
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PnPGlobalData = SvcsGlobalData;
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//
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// Register our service ctrl handler
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//
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if ((hSvcHandle = RegisterServiceCtrlHandlerEx(L"PlugPlay",
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(LPHANDLER_FUNCTION_EX)PnPControlHandlerEx,
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NULL)) == 0) {
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KdPrintEx((DPFLTR_PNPMGR_ID,
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DBGF_ERRORS,
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"UMPNPMGR: RegisterServiceCtrlHandlerEx failed, error = %d\n",
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GetLastError()));
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return;
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}
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//
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// Notify Service Controller that we're alive
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//
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PnPServiceStatusUpdate(hSvcHandle, SERVICE_START_PENDING, 1, 0);
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//
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// Initialize the PNP service to recieve RPC requests
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//
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// NOTE: Now all RPC servers in services.exe share the same pipe name.
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// However, in order to support communication with version 1.0 of WinNt,
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// it is necessary for the Client Pipe name to remain the same as
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// it was in version 1.0. Mapping to the new name is performed in
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// the Named Pipe File System code.
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//
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if ((Status = PnPGlobalData->StartRpcServer(
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PnPGlobalData->SvcsRpcPipeName,
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pnp_ServerIfHandle)) != NO_ERROR) {
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KdPrintEx((DPFLTR_PNPMGR_ID,
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DBGF_ERRORS,
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"UMPNPMGR: StartRpcServer failed with Status = %d\n",
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Status));
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return;
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}
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//
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// Notify Service Controller that we're alive
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//
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PnPServiceStatusUpdate(hSvcHandle, SERVICE_START_PENDING, 2, 0);
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//
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// Lookup the "LoadDriver" and "Undock" privileges.
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//
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if (gLuidLoadDriverPrivilege.LowPart == 0 && gLuidLoadDriverPrivilege.HighPart == 0) {
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if (!LookupPrivilegeValue(NULL, SE_LOAD_DRIVER_NAME, &gLuidLoadDriverPrivilege)) {
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KdPrintEx((DPFLTR_PNPMGR_ID,
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DBGF_ERRORS,
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"UMPNPMGR: LookupPrivilegeValue failed, error = %d\n",
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GetLastError()));
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}
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}
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if (gLuidUndockPrivilege.LowPart == 0 && gLuidUndockPrivilege.HighPart == 0) {
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if (!LookupPrivilegeValue(NULL, SE_UNDOCK_NAME, &gLuidUndockPrivilege)) {
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KdPrintEx((DPFLTR_PNPMGR_ID,
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DBGF_ERRORS,
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"UMPNPMGR: LookupPrivilegeValue failed, error = %d\n",
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GetLastError()));
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}
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}
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//
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// Notify Service Controller that we're alive
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//
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PnPServiceStatusUpdate(hSvcHandle, SERVICE_START_PENDING, 3, 0);
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//
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// Initialize pnp manager
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//
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hThread = CreateThread(NULL,
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0,
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(LPTHREAD_START_ROUTINE)InitializePnPManager,
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NULL,
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0,
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&ThreadID);
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if (hThread != NULL) {
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CloseHandle(hThread);
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}
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//
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// Notify Service Controller that we're now running
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//
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PnPServiceStatusUpdate(hSvcHandle, SERVICE_RUNNING, 0, 0);
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//
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// Service initialization is complete.
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//
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return;
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} // SVCS_ENTRY_POINT
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DWORD
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PnPControlHandlerEx(
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IN DWORD dwControl,
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IN DWORD dwEventType,
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IN LPVOID lpEventData,
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IN LPVOID lpContext
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)
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/*++
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Routine Description:
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This is the service control handler of the Plug-and-Play service.
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Arguments:
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dwControl - The requested control code.
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dwEventType - The type of event that has occurred.
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lpEventData - Additional device information, if required.
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lpContext - User-defined data, not used.
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Return Value:
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Returns NO_ERROR if sucessful, otherwise returns an error code describing
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the problem.
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--*/
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{
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UNREFERENCED_PARAMETER(lpContext);
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switch (dwControl) {
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case SERVICE_CONTROL_STOP:
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case SERVICE_CONTROL_SHUTDOWN:
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//
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// If we aren't already in the middle of a stop, then
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// stop the PNP service now and perform the necessary cleanup.
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//
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if (CurrentServiceState != SERVICE_STOPPED &&
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CurrentServiceState != SERVICE_STOP_PENDING) {
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//
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// Notify Service Controller that we're stopping
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//
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PnPServiceStatusUpdate(hSvcHandle, SERVICE_STOP_PENDING, 1, 0);
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//
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// Stop the RPC server
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//
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PnPGlobalData->StopRpcServer(pnp_ServerIfHandle);
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//
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// Notify Service Controller that we've now stopped
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//
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PnPServiceStatusUpdate(hSvcHandle, SERVICE_STOPPED, 0, 0);
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}
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break;
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case SERVICE_CONTROL_INTERROGATE:
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//
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// Request to immediately notify Service Controller of
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// current status
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//
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PnPServiceStatusUpdate(hSvcHandle, CurrentServiceState, 0, 0);
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break;
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case SERVICE_CONTROL_SESSIONCHANGE:
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//
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// Session change notification.
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//
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SessionNotificationHandler(dwEventType, (PWTSSESSION_NOTIFICATION)lpEventData);
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break;
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default:
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//
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// No special handling for any other service controls.
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//
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break;
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}
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return NO_ERROR;
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} // PnPControlHandlerEx
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VOID
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PnPServiceStatusUpdate(
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SERVICE_STATUS_HANDLE hSvcHandle,
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DWORD dwState,
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DWORD dwCheckPoint,
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DWORD dwExitCode
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)
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/*++
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Routine Description:
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This routine notifies the Service Controller of the current status of the
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Plug-and-Play service.
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Arguments:
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hSvcHandle - Supplies the service status handle for the Plug-and-Play service.
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dwState - Specifies the current state of the service to report.
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dwCheckPoint - Specifies an intermediate checkpoint for operations during
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which the state is pending.
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dwExitCode - Specifies a service specific error code.
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Return Value:
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None.
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Note:
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This routine also updates the set of controls accepted by the service.
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The PlugPlay service currently accepts the following controls when the
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service is running:
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SERVICE_CONTROL_SHUTDOWN - the system is shutting down.
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SERVICE_CONTROL_SESSIONCHANGE - the state of some remote or console session
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has changed.
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--*/
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{
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SERVICE_STATUS SvcStatus;
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SvcStatus.dwServiceType = SERVICE_WIN32;
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SvcStatus.dwCurrentState = CurrentServiceState = dwState;
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SvcStatus.dwCheckPoint = dwCheckPoint;
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if (dwState == SERVICE_RUNNING) {
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SvcStatus.dwControlsAccepted = SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_SESSIONCHANGE;
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} else {
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SvcStatus.dwControlsAccepted = 0;
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}
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if ((dwState == SERVICE_START_PENDING) ||
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(dwState == SERVICE_STOP_PENDING)) {
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SvcStatus.dwWaitHint = 45000; // 45 seconds
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} else {
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SvcStatus.dwWaitHint = 0;
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}
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if (dwExitCode != 0) {
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SvcStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
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SvcStatus.dwServiceSpecificExitCode = dwExitCode;
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} else {
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SvcStatus.dwWin32ExitCode = NO_ERROR;
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SvcStatus.dwServiceSpecificExitCode = 0;
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}
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SetServiceStatus(hSvcHandle, &SvcStatus);
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return;
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} // PnPServiceStatusUpdate
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