mirror of
https://github.com/reactos/reactos.git
synced 2025-04-21 12:40:33 +00:00
[FORMATTING] - Cleanup formatting before starting to work on the file.
svn path=/trunk/; revision=22749
This commit is contained in:
Alex Ionescu
parent
3ea25ef417
commit
e7423e0ba3
2 changed files with 422 additions and 498 deletions
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@ -556,7 +556,8 @@ IopStartDevice(
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);
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NTSTATUS
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IoMountVolume(
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NTAPI
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IopMountVolume(
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IN PDEVICE_OBJECT DeviceObject,
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IN BOOLEAN AllowRawMount
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);
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@ -573,17 +574,19 @@ IoOpenFileOnDevice(
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);
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NTSTATUS
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STDCALL
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NTAPI
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IopAttachVpb(
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IN PDEVICE_OBJECT DeviceObject
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);
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VOID
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NTAPI
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IoInitFileSystemImplementation(
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VOID
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);
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VOID
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NTAPI
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IoInitVpbImplementation(
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VOID
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);
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@ -609,6 +612,7 @@ IoShutdownRegisteredDevices(
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);
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VOID
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NTAPI
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IoShutdownRegisteredFileSystems(
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VOID
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);
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@ -1,11 +1,11 @@
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/* $Id$
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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/fs.c
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* PURPOSE: Filesystem functions
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*
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* PROGRAMMERS: David Welch (welch@mcmail.com)
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/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/io/iomgr/volume.c
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* PURPOSE: Volume and File System I/O Support
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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* Hervé Poussineau (hpoussin@reactos.org)
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* Eric Kohl
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*/
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/* INCLUDES *****************************************************************/
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@ -39,28 +39,37 @@ typedef struct _FS_CHANGE_NOTIFY_ENTRY
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/* GLOBALS ******************************************************************/
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static ERESOURCE FileSystemListLock;
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static LIST_ENTRY FileSystemListHead;
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ERESOURCE FileSystemListLock;
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LIST_ENTRY FileSystemListHead;
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KGUARDED_MUTEX FsChangeNotifyListLock;
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LIST_ENTRY FsChangeNotifyListHead;
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KSPIN_LOCK IoVpbLock;
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static KGUARDED_MUTEX FsChangeNotifyListLock;
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static LIST_ENTRY FsChangeNotifyListHead;
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/* PRIVATE FUNCTIONS *********************************************************/
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static VOID
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IopNotifyFileSystemChange(PDEVICE_OBJECT DeviceObject,
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BOOLEAN DriverActive);
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static KSPIN_LOCK IoVpbLock;
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/* FUNCTIONS *****************************************************************/
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VOID INIT_FUNCTION
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VOID
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INIT_FUNCTION
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NTAPI
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IoInitVpbImplementation(VOID)
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{
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KeInitializeSpinLock(&IoVpbLock);
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}
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VOID
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INIT_FUNCTION
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NTAPI
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IoInitFileSystemImplementation(VOID)
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{
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InitializeListHead(&FileSystemListHead);
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ExInitializeResourceLite(&FileSystemListLock);
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InitializeListHead(&FsChangeNotifyListHead);
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KeInitializeGuardedMutex(&FsChangeNotifyListLock);
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}
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NTSTATUS
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STDCALL
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IopAttachVpb(PDEVICE_OBJECT DeviceObject)
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IopAttachVpb(IN PDEVICE_OBJECT DeviceObject)
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{
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PVPB Vpb;
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@ -68,7 +77,7 @@ IopAttachVpb(PDEVICE_OBJECT DeviceObject)
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Vpb = ExAllocatePoolWithTag(NonPagedPool,
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sizeof(VPB),
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TAG_VPB);
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if (Vpb == NULL) return(STATUS_UNSUCCESSFUL);
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if (!Vpb) return(STATUS_UNSUCCESSFUL);
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/* Clear it so we don't waste time manually */
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RtlZeroMemory(Vpb, sizeof(VPB));
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@ -83,18 +92,23 @@ IopAttachVpb(PDEVICE_OBJECT DeviceObject)
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return(STATUS_SUCCESS);
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}
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VOID INIT_FUNCTION
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IoInitFileSystemImplementation(VOID)
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VOID
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NTAPI
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IopNotifyFileSystemChange(IN PDEVICE_OBJECT DeviceObject,
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IN BOOLEAN DriverActive)
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{
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InitializeListHead(&FileSystemListHead);
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ExInitializeResourceLite(&FileSystemListLock);
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PFS_CHANGE_NOTIFY_ENTRY ChangeEntry;
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InitializeListHead(&FsChangeNotifyListHead);
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KeInitializeGuardedMutex(&FsChangeNotifyListLock);
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KeAcquireGuardedMutex(&FsChangeNotifyListLock);
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LIST_FOR_EACH(ChangeEntry, &FsChangeNotifyListHead,FS_CHANGE_NOTIFY_ENTRY, FsChangeNotifyList)
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{
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(ChangeEntry->FSDNotificationProc)(DeviceObject, DriverActive);
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}
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KeReleaseGuardedMutex(&FsChangeNotifyListLock);
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}
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VOID
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NTAPI
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IoShutdownRegisteredFileSystems(VOID)
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{
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FILE_SYSTEM_OBJECT* current;
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@ -103,13 +117,9 @@ IoShutdownRegisteredFileSystems(VOID)
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IO_STATUS_BLOCK IoStatusBlock;
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NTSTATUS Status;
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DPRINT("IoShutdownRegisteredFileSystems()\n");
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KeEnterCriticalRegion();
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ExAcquireResourceSharedLite(&FileSystemListLock,TRUE);
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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LIST_FOR_EACH(current, &FileSystemListHead, FILE_SYSTEM_OBJECT,Entry)
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{
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@ -137,20 +147,16 @@ IoShutdownRegisteredFileSystems(VOID)
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KeLeaveCriticalRegion();
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}
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static NTSTATUS
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IopMountFileSystem(PDEVICE_OBJECT DeviceObject,
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PDEVICE_OBJECT DeviceToMount)
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NTSTATUS
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NTAPI
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IopMountFileSystem(IN PDEVICE_OBJECT DeviceObject,
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IN PDEVICE_OBJECT DeviceToMount)
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{
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IO_STATUS_BLOCK IoStatusBlock;
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PIO_STACK_LOCATION StackPtr;
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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DPRINT("IopMountFileSystem(DeviceObject 0x%p, DeviceToMount 0x%p)\n",
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DeviceObject,DeviceToMount);
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ASSERT_IRQL(PASSIVE_LEVEL);
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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@ -187,8 +193,8 @@ IopMountFileSystem(PDEVICE_OBJECT DeviceObject,
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return(Status);
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}
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static NTSTATUS
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NTSTATUS
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NTAPI
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IopLoadFileSystem(IN PDEVICE_OBJECT DeviceObject)
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{
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IO_STATUS_BLOCK IoStatusBlock;
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@ -196,9 +202,6 @@ IopLoadFileSystem(IN PDEVICE_OBJECT DeviceObject)
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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DPRINT("IopLoadFileSystem(DeviceObject 0x%p)\n", DeviceObject);
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ASSERT_IRQL(PASSIVE_LEVEL);
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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@ -209,7 +212,6 @@ IopLoadFileSystem(IN PDEVICE_OBJECT DeviceObject)
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}
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Irp->UserIosb = &IoStatusBlock;
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DPRINT("Irp->UserIosb 0x%p\n", Irp->UserIosb);
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Irp->UserEvent = &Event;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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@ -232,27 +234,17 @@ IopLoadFileSystem(IN PDEVICE_OBJECT DeviceObject)
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return(Status);
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}
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NTSTATUS
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IoMountVolume(IN PDEVICE_OBJECT DeviceObject,
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NTAPI
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IopMountVolume(IN PDEVICE_OBJECT DeviceObject,
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IN BOOLEAN AllowRawMount)
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/*
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* FUNCTION: Mounts a logical volume
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* ARGUMENTS:
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* DeviceObject = Device to mount
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* RETURNS: Status
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*/
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{
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PFILE_SYSTEM_OBJECT current;
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NTSTATUS Status;
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DEVICE_TYPE MatchingDeviceType;
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PDEVICE_OBJECT DevObject;
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ASSERT_IRQL(PASSIVE_LEVEL);
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DPRINT("IoMountVolume(DeviceObject 0x%p AllowRawMount %x)\n",
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DeviceObject, AllowRawMount);
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switch (DeviceObject->DeviceType)
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{
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case FILE_DEVICE_DISK:
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@ -288,6 +280,7 @@ restart:
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{
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continue;
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}
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/* If we are not allowed to mount this volume as a raw filesystem volume
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then don't try this */
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if (!AllowRawMount && RawFsIsRawFileSystemDeviceObject(current->DeviceObject))
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@ -296,9 +289,9 @@ restart:
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}
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else
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{
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Status = IopMountFileSystem(current->DeviceObject,
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DeviceObject);
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Status = IopMountFileSystem(current->DeviceObject, DeviceObject);
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}
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switch (Status)
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{
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case STATUS_FS_DRIVER_REQUIRED:
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@ -326,34 +319,19 @@ restart:
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break;
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}
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}
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ExReleaseResourceLite(&FileSystemListLock);
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KeLeaveCriticalRegion();
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return(STATUS_UNRECOGNIZED_VOLUME);
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}
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/* PUBLIC FUNCTIONS **********************************************************/
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/**********************************************************************
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* NAME EXPORTED
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* IoVerifyVolume
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*
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* DESCRIPTION
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* Verify the file system type and volume information or mount
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* a file system.
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*
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* ARGUMENTS
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* DeviceObject
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* Device to verify or mount
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*
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* AllowRawMount
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* ...
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*
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* RETURN VALUE
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* Status
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*
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/*
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* @implemented
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*/
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NTSTATUS STDCALL
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NTSTATUS
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NTAPI
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IoVerifyVolume(IN PDEVICE_OBJECT DeviceObject,
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IN BOOLEAN AllowRawMount)
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{
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@ -361,14 +339,9 @@ IoVerifyVolume(IN PDEVICE_OBJECT DeviceObject,
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PIO_STACK_LOCATION StackPtr;
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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NTSTATUS Status = STATUS_SUCCESS;
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PDEVICE_OBJECT DevObject;
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DPRINT("IoVerifyVolume(DeviceObject 0x%p AllowRawMount %x)\n",
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DeviceObject, AllowRawMount);
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Status = STATUS_SUCCESS;
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KeWaitForSingleObject(&DeviceObject->DeviceLock,
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Executive,
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KernelMode,
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@ -380,9 +353,7 @@ IoVerifyVolume(IN PDEVICE_OBJECT DeviceObject,
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/* Issue verify request to the FSD */
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DevObject = DeviceObject->Vpb->DeviceObject;
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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Irp = IoAllocateIrp(DevObject->StackSize, TRUE);
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if (Irp==NULL)
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@ -406,8 +377,7 @@ IoVerifyVolume(IN PDEVICE_OBJECT DeviceObject,
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StackPtr->Parameters.VerifyVolume.Vpb = DeviceObject->Vpb;
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StackPtr->Parameters.VerifyVolume.DeviceObject = DeviceObject;
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Status = IoCallDriver(DevObject,
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Irp);
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Status = IoCallDriver(DevObject, Irp);
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if (Status==STATUS_PENDING)
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{
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KeWaitForSingleObject(&Event,Executive,KernelMode,FALSE,NULL);
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@ -416,9 +386,7 @@ IoVerifyVolume(IN PDEVICE_OBJECT DeviceObject,
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if (NT_SUCCESS(Status))
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{
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KeSetEvent(&DeviceObject->DeviceLock,
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IO_NO_INCREMENT,
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FALSE);
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KeSetEvent(&DeviceObject->DeviceLock, IO_NO_INCREMENT, FALSE);
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return(STATUS_SUCCESS);
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}
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}
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@ -433,29 +401,21 @@ IoVerifyVolume(IN PDEVICE_OBJECT DeviceObject,
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}
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/* Start mount sequence */
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Status = IoMountVolume(DeviceObject,
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AllowRawMount);
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KeSetEvent(&DeviceObject->DeviceLock,
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IO_NO_INCREMENT,
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FALSE);
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Status = IopMountVolume(DeviceObject, AllowRawMount);
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KeSetEvent(&DeviceObject->DeviceLock, IO_NO_INCREMENT, FALSE);
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return(Status);
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}
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/*
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* @implemented
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*/
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VOID STDCALL
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VOID
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NTAPI
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IoRegisterFileSystem(IN PDEVICE_OBJECT DeviceObject)
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{
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PFILE_SYSTEM_OBJECT Fs;
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DPRINT("IoRegisterFileSystem(DeviceObject 0x%p)\n", DeviceObject);
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Fs = ExAllocatePoolWithTag(NonPagedPool,
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sizeof(FILE_SYSTEM_OBJECT),
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TAG_FILE_SYSTEM);
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@ -470,27 +430,23 @@ IoRegisterFileSystem(IN PDEVICE_OBJECT DeviceObject)
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a volume. It is always the first filesystem driver registered so
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we use InsertHeadList() here as opposed to the other alternative
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InsertTailList(). */
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InsertHeadList(&FileSystemListHead,
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&Fs->Entry);
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InsertHeadList(&FileSystemListHead, &Fs->Entry);
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ExReleaseResourceLite(&FileSystemListLock);
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KeLeaveCriticalRegion();
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IopNotifyFileSystemChange(DeviceObject,
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TRUE);
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IopNotifyFileSystemChange(DeviceObject, TRUE);
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}
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/*
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* @implemented
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*/
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VOID STDCALL
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VOID
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NTAPI
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IoUnregisterFileSystem(IN PDEVICE_OBJECT DeviceObject)
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{
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PFILE_SYSTEM_OBJECT current;
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DPRINT("IoUnregisterFileSystem(DeviceObject 0x%p)\n", DeviceObject);
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KeEnterCriticalRegion();
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ExAcquireResourceExclusiveLite(&FileSystemListLock, TRUE);
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@ -511,26 +467,11 @@ IoUnregisterFileSystem(IN PDEVICE_OBJECT DeviceObject)
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KeLeaveCriticalRegion();
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}
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/**********************************************************************
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* NAME EXPORTED
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* IoGetBaseFileSystemDeviceObject@4
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*
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* DESCRIPTION
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* Get the DEVICE_OBJECT associated to
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* a FILE_OBJECT.
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*
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* ARGUMENTS
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* FileObject
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*
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* RETURN VALUE
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*
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* NOTE
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* From Bo Branten's ntifs.h v13.
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*
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/*
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* @implemented
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*/
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PDEVICE_OBJECT STDCALL
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PDEVICE_OBJECT
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NTAPI
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IoGetBaseFileSystemDeviceObject(IN PFILE_OBJECT FileObject)
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{
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PDEVICE_OBJECT DeviceObject = NULL;
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|
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@ -548,6 +489,7 @@ IoGetBaseFileSystemDeviceObject(IN PFILE_OBJECT FileObject)
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return DeviceObject;
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}
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}
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/*
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* If that failed, try the VPB
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* in the FILE_OBJECT's DeviceObject.
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|
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@ -558,38 +500,20 @@ IoGetBaseFileSystemDeviceObject(IN PFILE_OBJECT FileObject)
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/* DeviceObject->Vpb UNDEFINED! */
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return DeviceObject;
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}
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/*
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* If that pointer to the VPB is again
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* undefined, return directly the
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* device object from the FILE_OBJECT.
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*/
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return (
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(NULL == Vpb->DeviceObject)
|
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? DeviceObject
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: Vpb->DeviceObject
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);
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return ((NULL == Vpb->DeviceObject) ? DeviceObject : Vpb->DeviceObject);
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}
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static VOID
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IopNotifyFileSystemChange(PDEVICE_OBJECT DeviceObject,
|
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BOOLEAN DriverActive)
|
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{
|
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PFS_CHANGE_NOTIFY_ENTRY ChangeEntry;
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|
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KeAcquireGuardedMutex(&FsChangeNotifyListLock);
|
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LIST_FOR_EACH(ChangeEntry, &FsChangeNotifyListHead,FS_CHANGE_NOTIFY_ENTRY, FsChangeNotifyList)
|
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{
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(ChangeEntry->FSDNotificationProc)(DeviceObject, DriverActive);
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}
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KeReleaseGuardedMutex(&FsChangeNotifyListLock);
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}
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|
||||
|
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/*
|
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* @implemented
|
||||
*/
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NTSTATUS STDCALL
|
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NTSTATUS
|
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NTAPI
|
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IoRegisterFsRegistrationChange(IN PDRIVER_OBJECT DriverObject,
|
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IN PDRIVER_FS_NOTIFICATION FSDNotificationProc)
|
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{
|
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|
|
@ -598,25 +522,23 @@ IoRegisterFsRegistrationChange(IN PDRIVER_OBJECT DriverObject,
|
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Entry = ExAllocatePoolWithTag(NonPagedPool,
|
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sizeof(FS_CHANGE_NOTIFY_ENTRY),
|
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TAG_FS_CHANGE_NOTIFY);
|
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if (Entry == NULL)
|
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return(STATUS_INSUFFICIENT_RESOURCES);
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if (Entry == NULL) return(STATUS_INSUFFICIENT_RESOURCES);
|
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Entry->DriverObject = DriverObject;
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Entry->FSDNotificationProc = FSDNotificationProc;
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KeAcquireGuardedMutex(&FsChangeNotifyListLock);
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InsertHeadList(&FsChangeNotifyListHead,
|
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&Entry->FsChangeNotifyList);
|
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InsertHeadList(&FsChangeNotifyListHead, &Entry->FsChangeNotifyList);
|
||||
KeReleaseGuardedMutex(&FsChangeNotifyListLock);
|
||||
|
||||
return(STATUS_SUCCESS);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* @implemented
|
||||
*/
|
||||
VOID STDCALL
|
||||
VOID
|
||||
NTAPI
|
||||
IoUnregisterFsRegistrationChange(IN PDRIVER_OBJECT DriverObject,
|
||||
IN PDRIVER_FS_NOTIFICATION FSDNotificationProc)
|
||||
{
|
||||
|
|
@ -634,29 +556,27 @@ IoUnregisterFsRegistrationChange(IN PDRIVER_OBJECT DriverObject,
|
|||
ExFreePoolWithTag(ChangeEntry, TAG_FS_CHANGE_NOTIFY);
|
||||
return;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* @implemented
|
||||
*/
|
||||
VOID STDCALL
|
||||
VOID
|
||||
NTAPI
|
||||
IoAcquireVpbSpinLock(OUT PKIRQL Irql)
|
||||
{
|
||||
KeAcquireSpinLock(&IoVpbLock,
|
||||
Irql);
|
||||
KeAcquireSpinLock(&IoVpbLock, Irql);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* @implemented
|
||||
*/
|
||||
VOID STDCALL
|
||||
VOID
|
||||
NTAPI
|
||||
IoReleaseVpbSpinLock(IN KIRQL Irql)
|
||||
{
|
||||
KeReleaseSpinLock(&IoVpbLock,
|
||||
Irql);
|
||||
KeReleaseSpinLock(&IoVpbLock, Irql);
|
||||
}
|
||||
|
||||
/* EOF */
|
||||
|
|
|
|||
Loading…
Reference in a new issue