[ros-diffs] [pschweitzer] 65638: [NTFS] - Implement NtfsGetUserBuffer() that will (attempt to) return the user output buffer for METHOD_NEITHER IOCTL. - Implement parameters checking GetVolumeBitmap() CORE-8725

Author: pschweitzer
Date: Sun Dec 14 12:24:18 2014
New Revision: 65638

URL: http://svn.reactos.org/svn/reactos?rev=65638&view=rev
Log:
[NTFS]
- Implement NtfsGetUserBuffer() that will (attempt to) return the user output buffer for
METHOD_NEITHER IOCTL.
- Implement parameters checking GetVolumeBitmap()

CORE-8725 

Modified:
    trunk/reactos/drivers/filesystems/ntfs/CMakeLists.txt
    trunk/reactos/drivers/filesystems/ntfs/fsctl.c
    trunk/reactos/drivers/filesystems/ntfs/misc.c
    trunk/reactos/drivers/filesystems/ntfs/ntfs.h

Modified: trunk/reactos/drivers/filesystems/ntfs/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/C…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/CMakeLists.txt	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/CMakeLists.txt	[iso-8859-1] Sun Dec 14 12:24:18
2014
@@ -20,6 +20,7 @@
 
 add_library(ntfs SHARED ${SOURCE} ntfs.rc)
 set_module_type(ntfs kernelmodedriver)
+target_link_libraries(ntfs ${PSEH_LIB})
 add_importlibs(ntfs ntoskrnl hal)
 add_pch(ntfs ntfs.h SOURCE)
 add_cd_file(TARGET ntfs DESTINATION reactos/system32/drivers NO_CAB FOR all)

Modified: trunk/reactos/drivers/filesystems/ntfs/fsctl.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/f…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/fsctl.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/fsctl.c	[iso-8859-1] Sun Dec 14 12:24:18 2014
@@ -661,7 +661,57 @@
 GetVolumeBitmap(PDEVICE_EXTENSION DeviceExt,
                 PIRP Irp)
 {
+    NTSTATUS Status = STATUS_SUCCESS;
+    PIO_STACK_LOCATION Stack;
+    PVOLUME_BITMAP_BUFFER BitmapBuffer;
+
     DPRINT1("GetVolumeBitmap(%p, %p)\n", DeviceExt, Irp);
+
+    Stack = IoGetCurrentIrpStackLocation(Irp);
+
+    if (Stack->Parameters.FileSystemControl.InputBufferLength <
sizeof(STARTING_LCN_INPUT_BUFFER))
+    {
+        DPRINT1("Invalid input! %d\n",
Stack->Parameters.FileSystemControl.InputBufferLength);
+        return STATUS_INVALID_PARAMETER;
+    }
+
+    if (Stack->Parameters.FileSystemControl.OutputBufferLength <
sizeof(VOLUME_BITMAP_BUFFER))
+    {
+        DPRINT1("Invalid output! %d\n",
Stack->Parameters.FileSystemControl.OutputBufferLength);
+        return STATUS_BUFFER_TOO_SMALL;
+    }
+
+    BitmapBuffer = NtfsGetUserBuffer(Irp);
+    if (Irp->RequestorMode == UserMode)
+    {
+        _SEH2_TRY
+        {
+            ProbeForRead(Stack->Parameters.FileSystemControl.Type3InputBuffer,
+                         Stack->Parameters.FileSystemControl.InputBufferLength,
+                         sizeof(CHAR));
+            ProbeForWrite(BitmapBuffer,
Stack->Parameters.FileSystemControl.OutputBufferLength,
+                          sizeof(CHAR));
+        }
+        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+        {
+            Status = _SEH2_GetExceptionCode();
+        }
+        _SEH2_END;
+    }
+    else
+    {
+        if (Stack->Parameters.FileSystemControl.Type3InputBuffer == NULL ||
+            BitmapBuffer == NULL)
+        {
+            Status = STATUS_INVALID_PARAMETER;
+        }
+    }
+
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("Invalid buffer! %p %p\n",
Stack->Parameters.FileSystemControl.Type3InputBuffer, BitmapBuffer);
+        return Status;
+    }
 
     UNIMPLEMENTED;
     return STATUS_NOT_IMPLEMENTED;

Modified: trunk/reactos/drivers/filesystems/ntfs/misc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/m…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/misc.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/misc.c	[iso-8859-1] Sun Dec 14 12:24:18 2014
@@ -112,4 +112,17 @@
         *FileAttributes = FILE_ATTRIBUTE_NORMAL;
 }
 
+PVOID
+NtfsGetUserBuffer(PIRP Irp)
+{
+    if (Irp->MdlAddress != NULL)
+    {
+        return MmGetSystemAddressForMdlSafe(Irp->MdlAddress, HighPagePriority);
+    }
+    else
+    {
+        return Irp->UserBuffer;
+    }
+}
+
 /* EOF */

Modified: trunk/reactos/drivers/filesystems/ntfs/ntfs.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/n…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/ntfs.h	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/ntfs.h	[iso-8859-1] Sun Dec 14 12:24:18 2014
@@ -2,6 +2,7 @@
 #define NTFS_H
 
 #include <ntifs.h>
+#include <pseh/pseh2.h>
 
 #define CACHEPAGESIZE(pDeviceExt) \
 	((pDeviceExt)->NtfsInfo.UCHARsPerCluster > PAGE_SIZE ? \
@@ -729,6 +730,9 @@
 NtfsAllocateIrpContext(PDEVICE_OBJECT DeviceObject,
                        PIRP Irp);
 
+PVOID
+NtfsGetUserBuffer(PIRP Irp);
+
 #if 0
 BOOLEAN
 wstrcmpjoki(PWSTR s1, PWSTR s2);