430 lines
10 KiB
C
430 lines
10 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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poshtdwn.c
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Abstract:
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Shutdown-related routines and structures
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Author:
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Rob Earhart (earhart) 01-Feb-2000
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Revision History:
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--*/
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#include "pop.h"
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#if DBG
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BOOLEAN
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PopDumpFileObject(
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IN PVOID Object,
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IN PUNICODE_STRING ObjectName,
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IN ULONG HandleCount,
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IN ULONG PointerCount,
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IN PVOID Parameter
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);
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#endif
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT, PopInitShutdownList)
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#pragma alloc_text(PAGE, PoRequestShutdownEvent)
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#pragma alloc_text(PAGE, PoRequestShutdownWait)
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#pragma alloc_text(PAGE, PoQueueShutdownWorkItem)
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#pragma alloc_text(PAGELK, PopGracefulShutdown)
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#if DBG
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#pragma alloc_text(PAGELK, PopDumpFileObject)
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#endif
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#endif
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KEVENT PopShutdownEvent;
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FAST_MUTEX PopShutdownListMutex;
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#ifdef ALLOC_DATA_PRAGMA
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#pragma data_seg("PAGEDATA")
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#endif
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BOOLEAN PopShutdownListAvailable = FALSE;
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SINGLE_LIST_ENTRY PopShutdownThreadList;
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LIST_ENTRY PopShutdownQueue;
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typedef struct _PoShutdownThreadListEntry {
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SINGLE_LIST_ENTRY ShutdownThreadList;
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PETHREAD Thread;
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} POSHUTDOWNLISTENTRY, *PPOSHUTDOWNLISTENTRY;
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NTSTATUS
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PopInitShutdownList(
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VOID
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)
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{
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PAGED_CODE();
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KeInitializeEvent(&PopShutdownEvent,
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NotificationEvent,
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FALSE);
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PopShutdownThreadList.Next = NULL;
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InitializeListHead(&PopShutdownQueue);
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ExInitializeFastMutex(&PopShutdownListMutex);
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PopShutdownListAvailable = TRUE;
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return STATUS_SUCCESS;
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}
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NTSTATUS
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PoRequestShutdownWait(
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IN PETHREAD Thread
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)
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{
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PPOSHUTDOWNLISTENTRY Entry;
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PAGED_CODE();
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Entry = (PPOSHUTDOWNLISTENTRY)
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ExAllocatePoolWithTag(PagedPool|POOL_COLD_ALLOCATION,
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sizeof(POSHUTDOWNLISTENTRY),
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'LSoP');
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if (! Entry) {
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return STATUS_NO_MEMORY;
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}
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Entry->Thread = Thread;
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ObReferenceObject(Thread);
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ExAcquireFastMutex(&PopShutdownListMutex);
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if (! PopShutdownListAvailable) {
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ObDereferenceObject(Thread);
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ExFreePool(Entry);
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ExReleaseFastMutex(&PopShutdownListMutex);
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return STATUS_UNSUCCESSFUL;
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}
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PushEntryList(&PopShutdownThreadList,
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&Entry->ShutdownThreadList);
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ExReleaseFastMutex(&PopShutdownListMutex);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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PoRequestShutdownEvent(
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OUT PVOID *Event
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)
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{
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NTSTATUS Status;
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PAGED_CODE();
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if (Event != NULL) {
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*Event = NULL;
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}
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Status = PoRequestShutdownWait(PsGetCurrentThread());
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if (!NT_SUCCESS(Status)) {
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return Status;
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}
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if (Event != NULL) {
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*Event = &PopShutdownEvent;
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}
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return STATUS_SUCCESS;
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}
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NTKERNELAPI
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NTSTATUS
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PoQueueShutdownWorkItem(
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IN PWORK_QUEUE_ITEM WorkItem
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)
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{
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NTSTATUS Status;
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PAGED_CODE();
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ExAcquireFastMutex(&PopShutdownListMutex);
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if (PopShutdownListAvailable) {
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InsertTailList(&PopShutdownQueue,
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&WorkItem->List);
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Status = STATUS_SUCCESS;
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} else {
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Status = STATUS_SYSTEM_SHUTDOWN;
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}
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ExReleaseFastMutex(&PopShutdownListMutex);
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return Status;
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}
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#if DBG
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extern POBJECT_TYPE IoFileObjectType;
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BOOLEAN
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PopDumpFileObject(
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IN PVOID Object,
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IN PUNICODE_STRING ObjectName,
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IN ULONG HandleCount,
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IN ULONG PointerCount,
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IN PVOID Parameter
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)
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{
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PFILE_OBJECT File;
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PULONG NumberOfFilesFound;
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UNREFERENCED_PARAMETER(ObjectName);
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ASSERT(Object);
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ASSERT(Parameter);
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File = (PFILE_OBJECT) Object;
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NumberOfFilesFound = (PULONG) Parameter;
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++*NumberOfFilesFound;
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DbgPrint("\t0x%0p : HC %d, PC %d, Name %.*ls\n",
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Object, HandleCount, PointerCount,
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File->FileName.Length,
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File->FileName.Buffer);
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return TRUE;
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}
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#endif // DBG
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VOID
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PopGracefulShutdown (
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IN PVOID WorkItemParameter
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)
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/*++
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Routine Description:
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This function is only called as a HyperCritical work queue item.
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It's responsible for gracefully shutting down the system.
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Return Value:
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This function never returns.
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--*/
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{
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PVOID Context;
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LARGE_INTEGER Timeout;
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HANDLE ShutdownReqThreadHandle;
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NTSTATUS Status;
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UNREFERENCED_PARAMETER(WorkItemParameter);
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//
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// Shutdown executive components (there's no turning back after this).
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//
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PERFINFO_SHUTDOWN_LOG_LAST_MEMORY_SNAPSHOT();
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if (!PopAction.ShutdownBugCode) {
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HalEndOfBoot();
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}
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if (PoCleanShutdownEnabled()) {
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//
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// Terminate all processes. This will close all the handles and delete
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// all the address spaces. Note the system process is kept alive.
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//
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PsShutdownSystem ();
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//
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// Notify every system thread that we're shutting things
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// down...
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//
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KeSetEvent(&PopShutdownEvent, 0, FALSE);
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//
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// ... and give all threads which requested notification a
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// chance to clean up and exit.
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//
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ExAcquireFastMutex(&PopShutdownListMutex);
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PopShutdownListAvailable = FALSE;
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ExReleaseFastMutex(&PopShutdownListMutex);
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{
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PLIST_ENTRY Next;
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PWORK_QUEUE_ITEM WorkItem;
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while (PopShutdownQueue.Flink != &PopShutdownQueue) {
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Next = RemoveHeadList(&PopShutdownQueue);
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WorkItem = CONTAINING_RECORD(Next,
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WORK_QUEUE_ITEM,
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List);
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WorkItem->WorkerRoutine(WorkItem->Parameter);
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}
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}
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{
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PSINGLE_LIST_ENTRY Next;
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PPOSHUTDOWNLISTENTRY ShutdownEntry;
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while (TRUE) {
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Next = PopEntryList(&PopShutdownThreadList);
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if (! Next) {
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break;
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}
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ShutdownEntry = CONTAINING_RECORD(Next,
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POSHUTDOWNLISTENTRY,
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ShutdownThreadList);
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KeWaitForSingleObject(ShutdownEntry->Thread,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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ObDereferenceObject(ShutdownEntry->Thread);
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ExFreePool(ShutdownEntry);
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}
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}
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}
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//
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// Terminate Plug-N-Play.
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//
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PpShutdownSystem (TRUE, 0, &Context);
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ExShutdownSystem (0);
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//
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// Send shutdown IRPs to all drivers that asked for it.
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//
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IoShutdownSystem (0);
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if (PoCleanShutdownEnabled()) {
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//
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// Wait for all the user mode processes to exit.
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//
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PsWaitForAllProcesses ();
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}
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//
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// Scrub the object directories
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//
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if (PoCleanShutdownEnabled() & PO_CLEAN_SHUTDOWN_OB) {
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ObShutdownSystem (0);
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}
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//
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// Close the registry and the associated handles/file objects.
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//
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CmShutdownSystem ();
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//
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// Check for open handles
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//
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if (PoCleanShutdownEnabled() & PO_CLEAN_SHUTDOWN_OB) {
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ObShutdownSystem (1);
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}
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//
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// This call to MmShutdownSystem will flush all the mapped data and empty
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// the cache. This gets the data out and dereferences all the file objects
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// so the drivers (ie: the network stack) can be cleanly unloaded.
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// Note that the drivers in the paging path will (and must) remain as the
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// pagefile handle has not yet been closed.
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//
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MmShutdownSystem (0);
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//
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// Inform drivers of the system shutdown state.
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// This will finish shutting down Io and Mm.
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// After this is complete,
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// NO MORE REFERENCES TO PAGABLE CODE OR DATA MAY BE MADE.
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//
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// ISSUE-2000/03/14-earhart: shutdown filesystems in dev shutdown
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IoConfigureCrashDump(CrashDumpDisable);
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CcWaitForCurrentLazyWriterActivity();
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ExShutdownSystem(1);
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IoShutdownSystem(1);
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MmShutdownSystem(1);
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#if DBG
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if (PoCleanShutdownEnabled()) {
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ULONG NumberOfFilesFoundAtShutdown = 0;
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// As of this time, no files should be open.
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DbgPrint("Looking for open files...\n");
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ObEnumerateObjectsByType(IoFileObjectType,
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&PopDumpFileObject,
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&NumberOfFilesFoundAtShutdown);
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DbgPrint("Found %d open files.\n", NumberOfFilesFoundAtShutdown);
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ASSERT(NumberOfFilesFoundAtShutdown == 0);
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}
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#endif
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// This prevents us from making any more calls out to GDI.
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PopFullWake = 0;
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ASSERT(PopAction.DevState);
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PopAction.DevState->Thread = KeGetCurrentThread();
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PopSetDevicesSystemState(FALSE);
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IoFreePoDeviceNotifyList(&PopAction.DevState->Order);
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//
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// Disable any wake alarms.
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//
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HalSetWakeEnable(FALSE);
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//
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// If this is a controlled shutdown bugcheck sequence, issue the
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// bugcheck now
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// ISSUE-2000/01/30-earhart Placement of ShutdownBugCode BugCheck
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// I dislike the fact that we're doing this controlled shutdown
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// bugcheck so late in the shutdown process; at this stage, too
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// much state has been torn down for this to be really useful.
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// Maybe if there's a debugger attached, we could shut down
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// sooner...
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if (PopAction.ShutdownBugCode) {
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KeBugCheckEx (PopAction.ShutdownBugCode->Code,
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PopAction.ShutdownBugCode->Parameter1,
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PopAction.ShutdownBugCode->Parameter2,
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PopAction.ShutdownBugCode->Parameter3,
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PopAction.ShutdownBugCode->Parameter4);
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}
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PERFINFO_SHUTDOWN_DUMP_PERF_BUFFER();
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PpShutdownSystem (TRUE, 1, &Context);
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ExShutdownSystem (2);
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if (PoCleanShutdownEnabled() & PO_CLEAN_SHUTDOWN_OB) {
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ObShutdownSystem (2);
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}
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//
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// Any allocated pool left at this point is a leak.
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//
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MmShutdownSystem (2);
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//
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// Implement shutdown style action -
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// N.B. does not return (will bugcheck in preference to returning).
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//
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PopShutdownSystem(PopAction.Action);
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}
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