close.c

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/*
 *  ReactOS kernel
 *  Copyright (C) 2002 ReactOS Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * COPYRIGHT:        See COPYING in the top level directory
 * PROJECT:          ReactOS kernel
 * FILE:             drivers/filesystem/ntfs/close.c
 * PURPOSE:          NTFS filesystem driver
 * PROGRAMMER:       Art Yerkes
 * UPDATE HISTORY:
 */
 
/* INCLUDES *****************************************************************/
 
#include "ntfs.h"
 
#define NDEBUG
#include <debug.h>
 
/* FUNCTIONS ****************************************************************/
 
/*
 * FUNCTION: Closes a file
 */
NTSTATUS
NtfsCloseFile(PDEVICE_EXTENSION DeviceExt,
              PFILE_OBJECT FileObject)
{
    PNTFS_CCB Ccb;
    PNTFS_FCB Fcb;
 
    DPRINT("NtfsCloseFile(DeviceExt %p, FileObject %p)\n",
           DeviceExt,
           FileObject);
 
    Ccb = (PNTFS_CCB)(FileObject->FsContext2);
    Fcb = (PNTFS_FCB)(FileObject->FsContext);
 
    DPRINT("Ccb %p\n", Ccb);
    if (Ccb == NULL)
    {
        return STATUS_SUCCESS;
    }
 
    FileObject->FsContext2 = NULL;
    FileObject->FsContext = NULL;
 
    /* SectionObjectPointer is deliberately left alone. Mm reaches the file's section object
     * pointers through it for as long as a section exists, which outlasts the handle. */
 
    DeviceExt->OpenHandleCount--;
 
    if (FileObject->FileName.Buffer)
    {
        // This a FO, that was created outside from FSD.
        // Some FO's are created with IoCreateStreamFileObject() insid from FSD.
        // This FO's don't have a FileName.
        NtfsReleaseFCB(DeviceExt, Fcb);
    }
 
    if (Ccb->DirectorySearchPattern)
    {
        ExFreePool(Ccb->DirectorySearchPattern);
    }
 
    ExFreePool(Ccb);
 
    return STATUS_SUCCESS;
}
 
 
NTSTATUS
NtfsClose(PNTFS_IRP_CONTEXT IrpContext)
{
    PDEVICE_EXTENSION DeviceExtension;
    PFILE_OBJECT FileObject;
    NTSTATUS Status;
    PDEVICE_OBJECT DeviceObject;
 
    DPRINT("NtfsClose() called\n");
 
    DeviceObject = IrpContext->DeviceObject;
    if (DeviceObject == NtfsGlobalData->DeviceObject)
    {
        DPRINT("Closing file system\n");
        IrpContext->Irp->IoStatus.Information = 0;
        return STATUS_SUCCESS;
    }
 
    FileObject = IrpContext->FileObject;
    DeviceExtension = DeviceObject->DeviceExtension;
 
    if (!ExAcquireResourceExclusiveLite(&DeviceExtension->DirResource,
                                        BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
    {
        return NtfsMarkIrpContextForQueue(IrpContext);
    }
 
    Status = NtfsCloseFile(DeviceExtension, FileObject);
 
    ExReleaseResourceLite(&DeviceExtension->DirResource);
 
    if (Status == STATUS_PENDING)
    {
        return NtfsMarkIrpContextForQueue(IrpContext);
    }
 
    IrpContext->Irp->IoStatus.Information = 0;
    return Status;
}
 
/* EOF */