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windows-nt/Source/XPSP1/NT/printscan/print/spooler/spoolss/server/splstat.c

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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
splstat.c
Abstract:
Routines for managing access to the status information and reporting:
SpoolerStatusInit
SpoolerBeginForcedShutdown
SpoolerStatusUpdate
GetSpoolerState
Author:
Krishna Ganugapati (KrishnaG) 17-Oct-1993
Environment:
User Mode -Win32
Notes:
Revision History:
17-Oct-1993 KrishnaG
created
--*/
//
// Includes
//
#define NOMINMAX
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <winspool.h>
#include <winsplp.h>
#include <rpc.h>
#include <winsvc.h> // Service control APIs
#include <lmsname.h>
#include "splsvr.h"
#include "splr.h"
#include "server.h"
// Static Data
//
static DWORD Next;
static DWORD InstallState;
static SERVICE_STATUS SpoolerStatus;
static DWORD HintCount;
static DWORD SpoolerUninstallCode; // reason for uninstalling
VOID
SpoolerStatusInit(VOID)
/*++
Routine Description:
Initializes the status database.
Arguments:
none.
Return Value:
none.
Note:
--*/
{
EnterCriticalSection(&ThreadCriticalSection);
SpoolerState=STARTING;
HintCount = 1;
SpoolerUninstallCode = 0;
SpoolerStatus.dwServiceType = SERVICE_WIN32;
SpoolerStatus.dwCurrentState = SERVICE_START_PENDING;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = HintCount;
SpoolerStatus.dwWaitHint = 20000; // 20 seconds
SpoolerStatus.dwWin32ExitCode = NO_ERROR;
SpoolerStatus.dwServiceSpecificExitCode = NO_ERROR;
LeaveCriticalSection(&ThreadCriticalSection);
return;
}
DWORD
SpoolerBeginForcedShutdown(
IN BOOL PendingCode,
IN DWORD Win32ExitCode,
IN DWORD ServiceSpecificExitCode
)
/*++
Routine Description:
This function is called to set the appropriate status when a shutdown
is to occur due to an error in the Spooler. NOTE: if a shutdown is
based on a request from the Service Controller, SpoolerStatusUpdate is
called instead.
Arguments:
PendingCode - Indicates if the Shutdown is immediate or pending. If
PENDING, the shutdown will take some time, so a pending status is
sent to the ServiceController.
ExitCode - Indicates the reason for the shutdown.
Return Value:
CurrentState - Contains the current state that the spooler is in
upon exit from this routine. In this case it will be STOPPED
if the PendingCode is PENDING, or STOPPING if the PendingCode
is IMMEDIATE.
Note:
We need to clean this code up!
--*/
{
DWORD status;
EnterCriticalSection(&ThreadCriticalSection);
//
// See if the Spooler is already stopping for some reason.
// It could be that the ControlHandler thread received a control to
// stop the Spooler just as we decided to stop ourselves.
//
if ((SpoolerState != STOPPING) && (SpoolerState != STOPPED)) {
if (PendingCode == PENDING) {
SpoolerStatus.dwCurrentState = SERVICE_STOP_PENDING;
SpoolerState = STOPPING;
}
else {
//
// The shutdown is to take immediate effect.
//
SpoolerStatus.dwCurrentState = SERVICE_STOPPED;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = 0;
SpoolerStatus.dwWaitHint = 0;
SpoolerState = STOPPED;
}
SpoolerUninstallCode = Win32ExitCode;
SpoolerStatus.dwWin32ExitCode = Win32ExitCode;
SpoolerStatus.dwServiceSpecificExitCode = ServiceSpecificExitCode;
}
//
// Send the new status to the service controller.
//
if (!SpoolerStatusHandle) {
DBGMSG(DBG_ERROR,
("SpoolerBeginForcedShutdown, no handle to call SetServiceStatus\n"));
}
else if (! SetServiceStatus( SpoolerStatusHandle, &SpoolerStatus )) {
status = GetLastError();
if (status != NERR_Success) {
DBGMSG(ERROR,
("SpoolerBeginForcedShutdown,SetServiceStatus Failed %X\n",
status));
}
}
status = SpoolerState;
LeaveCriticalSection(&ThreadCriticalSection);
return(status);
}
DWORD
SpoolerStatusUpdate(
IN DWORD NewState
)
/*++
Routine Description:
Sends a status to the Service Controller via SetServiceStatus.
The contents of the status message is controlled by this routine.
The caller simply passes in the desired state, and this routine does
the rest. For instance, if the Spooler passes in a STARTING state,
This routine will update the hint count that it maintains, and send
the appropriate information in the SetServiceStatus call.
This routine uses transitions in state to send determine which status
to send. For instance if the status was STARTING, and has changed
to RUNNING, this routine sends out an INSTALLED to the Service
Controller.
Arguments:
NewState - Can be any of the state flags:
UPDATE_ONLY - Simply send out the current status
STARTING - The Spooler is in the process of initializing
RUNNING - The Spooler has finished with initialization
STOPPING - The Spooler is in the process of shutting down
STOPPED - The Spooler has completed the shutdown.
Return Value:
CurrentState - This may not be the same as the NewState that was
passed in. It could be that the main thread is sending in a new
install state just after the Control Handler set the state to
STOPPING. In this case, the STOPPING state will be returned so as
to inform the main thread that a shut-down is in process.
Note:
--*/
{
DWORD status;
BOOL inhibit = FALSE; // Used to inhibit sending the status
// to the service controller.
EnterCriticalSection(&ThreadCriticalSection);
if (NewState == STOPPED) {
if (SpoolerState == STOPPED) {
//
// It was already stopped, don't send another SetServiceStatus.
//
inhibit = TRUE;
}
else {
//
// The shut down is complete, indicate that the spooler
// has stopped.
//
SpoolerStatus.dwCurrentState = SERVICE_STOPPED;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = 0;
SpoolerStatus.dwWaitHint = 0;
SpoolerStatus.dwWin32ExitCode = NO_ERROR;
SpoolerStatus.dwServiceSpecificExitCode = NO_ERROR;
}
SpoolerState = NewState;
}
else {
//
// We are not being asked to change to the STOPPED state.
//
switch(SpoolerState) {
case STARTING:
if (NewState == STOPPING) {
SpoolerStatus.dwCurrentState = SERVICE_STOP_PENDING;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = HintCount++;
SpoolerStatus.dwWaitHint = 20000; // 20 seconds
SpoolerState = NewState;
}
else if (NewState == RUNNING) {
//
// The Spooler Service has completed installation.
//
SpoolerStatus.dwCurrentState = SERVICE_RUNNING;
//
// The Spooler Service cannot be stopped once started
//
SpoolerStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP |
SERVICE_ACCEPT_SHUTDOWN |
SERVICE_ACCEPT_POWEREVENT;
SpoolerStatus.dwCheckPoint = 0;
SpoolerStatus.dwWaitHint = 0;
SpoolerState = NewState;
}
else {
//
// The NewState must be STARTING. So update the pending
// count
//
SpoolerStatus.dwCurrentState = SERVICE_START_PENDING;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = HintCount++;
SpoolerStatus.dwWaitHint = 20000; // 20 seconds
}
break;
case RUNNING:
if (NewState == STOPPING) {
SpoolerStatus.dwCurrentState = SERVICE_STOP_PENDING;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = HintCount++;
SpoolerStatus.dwWaitHint = 20000; // 20 seconds
SpoolerState = NewState;
}
break;
case STOPPING:
//
// No matter what else was passed in, force the status to
// indicate that a shutdown is pending.
//
SpoolerStatus.dwCurrentState = SERVICE_STOPPED;
SpoolerStatus.dwControlsAccepted = 0;
SpoolerStatus.dwCheckPoint = 0;
SpoolerStatus.dwWaitHint = 0; // 20 seconds
break;
case STOPPED:
//
// We're already stopped. Therefore, an uninstalled status
// as already been sent. Do nothing.
//
inhibit = TRUE;
break;
}
}
if (!inhibit) {
if (!SpoolerStatusHandle) {
DBGMSG(DBG_ERROR,("SpoolerStatusUpdate, no handle to call SetServiceStatus\n"));
}
else if (! SetServiceStatus( SpoolerStatusHandle, &SpoolerStatus )) {
status = GetLastError();
if (status != NERR_Success) {
DBGMSG(DBG_ERROR,
("SpoolerStatusUpdate, SetServiceStatus Failed %d\n",status));
}
}
}
status = SpoolerState;
LeaveCriticalSection(&ThreadCriticalSection);
return(status);
}
DWORD
GetSpoolerState (
VOID
)
/*++
Routine Description:
Obtains the state of the Spooler Service. This state information
is protected as a critical section such that only one thread can
modify or read it at a time.
Arguments:
none
Return Value:
The Spooler State is returned as the return value.
--*/
{
DWORD status;
EnterCriticalSection(&ThreadCriticalSection);
status = SpoolerState;
LeaveCriticalSection(&ThreadCriticalSection);
return(status);
}
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