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Implement IO_NO_PARAMETER_CHECKING flag

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svn path=/trunk/; revision=13256
This commit is contained in:
Gé van Geldorp 2005-01-24 22:02:09 +00:00
parent d7aea92eeb
commit 93551abbd2
3 changed files with 46 additions and 12 deletions
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5
reactos/include/ddk/iodef.h
View file

@ -160,6 +160,11 @@ enum
#define SL_INVOKE_ON_SUCCESS 0x40
#define SL_INVOKE_ON_ERROR 0x80
/*
* IoCreateFile options
*/
#define IO_NO_PARAMETER_CHECKING 0x100
/*
* Possible flags for the device object flags
*/

51
reactos/ntoskrnl/io/create.c
View file

@ -321,7 +321,7 @@ IoCreateStreamFileObject(PFILE_OBJECT FileObject,
* @implemented
*/
NTSTATUS STDCALL
IoCreateFile(OUT PHANDLE FileHandle,
IoCreateFile(OUT PHANDLE FileHandle,
IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes,
OUT PIO_STATUS_BLOCK IoStatusBlock,
@ -341,7 +341,9 @@ IoCreateFile(OUT PHANDLE FileHandle,
PIRP Irp;
PIO_STACK_LOCATION StackLoc;
IO_SECURITY_CONTEXT SecurityContext;
KPROCESSOR_MODE PreviousMode;
KPROCESSOR_MODE PreviousMode;
HANDLE LocalFileHandle;
IO_STATUS_BLOCK LocalIoStatusBlock;
DPRINT("IoCreateFile(FileHandle %x, DesiredAccess %x, "
"ObjectAttributes %x ObjectAttributes->ObjectName->Buffer %S)\n",
@ -350,14 +352,14 @@ IoCreateFile(OUT PHANDLE FileHandle,
ASSERT_IRQL(PASSIVE_LEVEL);
if (IoStatusBlock == NULL)
return STATUS_ACCESS_VIOLATION;
if (IoStatusBlock == NULL || FileHandle == NULL)
return STATUS_ACCESS_VIOLATION;
*FileHandle = 0;
LocalFileHandle = 0;
PreviousMode = ExGetPreviousMode();
Status = ObCreateObject(PreviousMode,
Status = ObCreateObject(0 == (Options & IO_NO_PARAMETER_CHECKING) ? PreviousMode : KernelMode,
IoFileObjectType,
ObjectAttributes,
PreviousMode,
@ -380,7 +382,7 @@ IoCreateFile(OUT PHANDLE FileHandle,
DesiredAccess,
0,
NULL,
FileHandle);
&LocalFileHandle);
if (!NT_SUCCESS(Status))
{
DPRINT("ObInsertObject() failed! (Status %lx)\n", Status);
@ -418,14 +420,14 @@ IoCreateFile(OUT PHANDLE FileHandle,
Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
if (Irp == NULL)
{
ZwClose(*FileHandle);
ZwClose(LocalFileHandle);
return STATUS_UNSUCCESSFUL;
}
//trigger FileObject/Event dereferencing
Irp->Tail.Overlay.OriginalFileObject = FileObject;
Irp->RequestorMode = PreviousMode;
Irp->UserIosb = IoStatusBlock;
Irp->UserIosb = &LocalIoStatusBlock;
Irp->AssociatedIrp.SystemBuffer = EaBuffer;
Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
Irp->Tail.Overlay.Thread = PsGetCurrentThread();
@ -493,7 +495,7 @@ IoCreateFile(OUT PHANDLE FileHandle,
PreviousMode,
FALSE,
NULL);
Status = IoStatusBlock->Status;
Status = LocalIoStatusBlock.Status;
}
if (!NT_SUCCESS(Status))
{
@ -501,7 +503,34 @@ IoCreateFile(OUT PHANDLE FileHandle,
FileObject->DeviceObject = NULL;
FileObject->Vpb = NULL;
ZwClose(*FileHandle);
ZwClose(LocalFileHandle);
}
else
{
if (KernelMode == PreviousMode || 0 != (Options & IO_NO_PARAMETER_CHECKING))
{
*FileHandle = LocalFileHandle;
*IoStatusBlock = LocalIoStatusBlock;
}
else
{
_SEH_TRY
{
ProbeForWrite(FileHandle,
sizeof(HANDLE),
sizeof(ULONG));
*FileHandle = LocalFileHandle;
ProbeForWrite(IoStatusBlock,
sizeof(IO_STATUS_BLOCK),
sizeof(ULONG));
*IoStatusBlock = LocalIoStatusBlock;
}
_SEH_HANDLE
{
Status = _SEH_GetExceptionCode();
}
_SEH_END;
}
}
ASSERT_IRQL(PASSIVE_LEVEL);

2
reactos/ntoskrnl/mm/pagefile.c
View file

@ -833,7 +833,7 @@ NtCreatePagingFile(IN PUNICODE_STRING FileName,
0,
CreateFileTypeNone,
NULL,
SL_OPEN_PAGING_FILE);
SL_OPEN_PAGING_FILE | IO_NO_PARAMETER_CHECKING);
RtlReleaseCapturedUnicodeString(&CapturedFileName,
PreviousMode,
FALSE);