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87589daf4e
Modified loadros to support loading symbol files early at startup. Modified loadros to convey BIOS memory map to the kernel if available. Began building PnP manager device tree. Added shutdown command to shell.exe svn path=/trunk/; revision=1852
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/* $Id: shutdown.c,v 1.5 2001/05/01 23:08:19 chorns Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/io/shutdown.c
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* PURPOSE: Implements shutdown notification
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* PROGRAMMER: David Welch (welch@mcmail.com)
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* UPDATE HISTORY:
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* Created 22/05/98
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*/
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/* INCLUDES *****************************************************************/
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#include <ddk/ntddk.h>
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#include <internal/pool.h>
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#define NDEBUG
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#include <internal/debug.h>
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/* LOCAL DATA ***************************************************************/
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typedef struct _SHUTDOWN_ENTRY
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{
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LIST_ENTRY ShutdownList;
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PDEVICE_OBJECT DeviceObject;
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} SHUTDOWN_ENTRY, *PSHUTDOWN_ENTRY;
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static LIST_ENTRY ShutdownListHead;
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static KSPIN_LOCK ShutdownListLock;
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#define TAG_SHUTDOWN_ENTRY TAG('S', 'H', 'U', 'T')
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/* FUNCTIONS *****************************************************************/
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VOID IoInitShutdownNotification (VOID)
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{
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InitializeListHead(&ShutdownListHead);
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KeInitializeSpinLock(&ShutdownListLock);
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}
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VOID IoShutdownRegisteredDevices(VOID)
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{
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PSHUTDOWN_ENTRY ShutdownEntry;
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PLIST_ENTRY Entry;
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IO_STATUS_BLOCK StatusBlock;
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PIRP Irp;
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KEVENT Event;
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NTSTATUS Status;
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Entry = ShutdownListHead.Flink;
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while (Entry != &ShutdownListHead)
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{
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ShutdownEntry = CONTAINING_RECORD(Entry, SHUTDOWN_ENTRY, ShutdownList);
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KeInitializeEvent (&Event,
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NotificationEvent,
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FALSE);
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Irp = IoBuildSynchronousFsdRequest (IRP_MJ_SHUTDOWN,
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ShutdownEntry->DeviceObject,
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NULL,
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0,
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NULL,
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&Event,
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&StatusBlock);
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Status = IoCallDriver (ShutdownEntry->DeviceObject,
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Irp);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject (&Event,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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}
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Entry = Entry->Flink;
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}
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}
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NTSTATUS STDCALL IoRegisterShutdownNotification(PDEVICE_OBJECT DeviceObject)
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{
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PSHUTDOWN_ENTRY Entry;
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Entry = ExAllocatePoolWithTag(NonPagedPool, sizeof(SHUTDOWN_ENTRY),
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TAG_SHUTDOWN_ENTRY);
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if (Entry == NULL)
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return STATUS_INSUFFICIENT_RESOURCES;
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Entry->DeviceObject = DeviceObject;
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ExInterlockedInsertHeadList(&ShutdownListHead,
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&Entry->ShutdownList,
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&ShutdownListLock);
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DeviceObject->Flags |= DO_SHUTDOWN_REGISTERED;
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return STATUS_SUCCESS;
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}
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VOID STDCALL IoUnregisterShutdownNotification(PDEVICE_OBJECT DeviceObject)
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{
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PSHUTDOWN_ENTRY ShutdownEntry;
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PLIST_ENTRY Entry;
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KIRQL oldlvl;
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Entry = ShutdownListHead.Flink;
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while (Entry != &ShutdownListHead)
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{
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ShutdownEntry = CONTAINING_RECORD(Entry, SHUTDOWN_ENTRY, ShutdownList);
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if (ShutdownEntry->DeviceObject == DeviceObject)
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{
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DeviceObject->Flags &= ~DO_SHUTDOWN_REGISTERED;
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KeAcquireSpinLock(&ShutdownListLock,&oldlvl);
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RemoveEntryList(Entry);
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KeReleaseSpinLock(&ShutdownListLock,oldlvl);
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ExFreePool(Entry);
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return;
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}
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Entry = Entry->Flink;
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}
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}
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/* EOF */
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