NTFS driver improvments :

- Implemented NtfsFsdDispatch to dispatch some IO requests (use it with implemented functions that need it) - Implemented NtfsIsIrpTopLevel (From Rajeev Nagar), NtfsAllocateIrpContext - Added more checks - Renamed functions that are called by IO to NtfsFsd* (similar to Windows NTFS driver) - Use NTAPI instead of STDCALL to have MSVC compatibility, thanks to Hervé - Reorganized functions order with increasing index - Updated files headers svn path=/trunk/; revision=32253
2025-08-06 05:12:55 +00:00 · 2008-02-10 11:20:29 +00:00 · 2008-02-10 11:20:29 +00:00 · 47b892354b
commit 47b892354b
parent b78400c9f4
16 changed files with 291 additions and 102 deletions
--- a/reactos/drivers/filesystems/ntfs/misc.c
+++ b/reactos/drivers/filesystems/ntfs/misc.c
@ -0,0 +1,93 @@
+/*
+ *  ReactOS kernel
+ *  Copyright (C) 2008 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * COPYRIGHT:        See COPYING in the top level directory
+ * PROJECT:          ReactOS kernel
+ * FILE:             drivers/filesystem/ntfs/misc.c
+ * PURPOSE:          NTFS filesystem driver
+ * PROGRAMMER:       Pierre Schweitzer
+ * UPDATE HISTORY:
+ */
+
+/* INCLUDES *****************************************************************/
+
+#include "ntfs.h"
+
+#define NDEBUG
+#include <debug.h>
+
+/* GLOBALS *****************************************************************/
+
+
+/* FUNCTIONS ****************************************************************/
+
+/*
+ * FUNCTION: Used with IRP to set them to TopLevelIrp field
+ * ARGUMENTS:
+ *           Irp = The IRP to set
+ * RETURNS: TRUE if top level was null, else FALSE
+ */
+BOOLEAN
+NtfsIsIrpTopLevel(PIRP Irp)
+{
+  BOOLEAN	ReturnCode = FALSE;
+  
+  TRACE_(NTFS, "NtfsIsIrpTopLevel()\n");
+
+  if (IoGetTopLevelIrp() == NULL)
+  {
+    IoSetTopLevelIrp(Irp);
+    ReturnCode = TRUE;
+  }
+
+  return ReturnCode;
+}
+
+/*
+ * FUNCTION: Allocate and fill an NTFS_IRP_CONTEXT struct in order to use it for IRP
+ * ARGUMENTS:
+ *           DeviceObject = Used to fill in struct 
+ *           Irp = The IRP that need IRP_CONTEXT struct
+ * RETURNS: NULL or PNTFS_IRP_CONTEXT
+ */
+PNTFS_IRP_CONTEXT
+NtfsAllocateIrpContext(PDEVICE_OBJECT DeviceObject,
+                       PIRP Irp)
+{
+  PNTFS_IRP_CONTEXT IrpContext;
+  PIO_STACK_LOCATION IoStackLocation;
+  
+  TRACE_(NTFS, "NtfsAllocateIrpContext()\n");
+  
+  IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
+  
+  IrpContext = (PNTFS_IRP_CONTEXT)ExAllocatePoolWithTag(NonPagedPool, sizeof(NTFS_IRP_CONTEXT), TAG('N', 'I', 'R', 'P'));
+  if (IrpContext == NULL)
+    return NULL;
+    
+  RtlZeroMemory(IrpContext, sizeof(NTFS_IRP_CONTEXT));
+  IrpContext->Identifier.Type = NTFS_TYPE_IRP_CONTEST;
+  IrpContext->Identifier.Size = sizeof(NTFS_IRP_CONTEXT);
+  IrpContext->Irp = Irp;
+  IrpContext->MajorFunction = IoStackLocation->MajorFunction;
+  IrpContext->MinorFunction = IoStackLocation->MinorFunction;
+  IrpContext->DeviceObject = DeviceObject;
+  IrpContext->IsTopLevel = (IoGetTopLevelIrp() == Irp);
+  
+  return IrpContext;
+}