#include "ldr.h"
#include "kd.h"
#include "ex.h"
-#include "xhal.h"
-#include "v86m.h"
-#include "fs.h"
-#include "port.h"
+#include "fsrtl.h"
+#include "lpc.h"
#include "rtl.h"
#ifdef KDBG
#include "../kdbg/kdb.h"
NTSTATUS
NTAPI
ProbeAndCaptureUnicodeString(OUT PUNICODE_STRING Dest,
- KPROCESSOR_MODE CurrentMode,
+ IN KPROCESSOR_MODE CurrentMode,
IN PUNICODE_STRING UnsafeSrc)
{
NTSTATUS Status = STATUS_SUCCESS;
- PVOID Buffer;
+ WCHAR *Buffer;
ASSERT(Dest != NULL);
/* Probe the structure and buffer*/
sizeof(UNICODE_STRING),
sizeof(ULONG));
*Dest = *UnsafeSrc;
- if(Dest->Length > 0)
+ if(Dest->Buffer != NULL)
{
- ProbeForRead(Dest->Buffer,
- Dest->Length,
- sizeof(WCHAR));
+ if (Dest->Length != 0)
+ {
+ ProbeForRead(Dest->Buffer,
+ Dest->Length,
+ sizeof(WCHAR));
+
+ /* Allocate space for the buffer */
+ Buffer = ExAllocatePoolWithTag(PagedPool,
+ Dest->Length + sizeof(WCHAR),
+ TAG('U', 'S', 'T', 'R'));
+ if (Buffer == NULL)
+ {
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ _SEH_LEAVE;
+ }
+
+ /* Copy it */
+ RtlCopyMemory(Buffer, Dest->Buffer, Dest->Length);
+ Buffer[Dest->Length / sizeof(WCHAR)] = UNICODE_NULL;
+
+ /* Set it as the buffer */
+ Dest->Buffer = Buffer;
+ }
+ else
+ {
+ /* sanitize structure */
+ Dest->MaximumLength = 0;
+ Dest->Buffer = NULL;
+ }
+ }
+ else
+ {
+ /* sanitize structure */
+ Dest->Length = 0;
+ Dest->MaximumLength = 0;
}
}
_SEH_HANDLE
Status = _SEH_GetExceptionCode();
}
_SEH_END;
-
- if (!NT_SUCCESS(Status)) return Status;
}
else
{
- /* Just copy it directly */
+ /* Just copy the UNICODE_STRING structure, don't allocate new memory!
+ We trust the caller to supply valid pointers and data. */
*Dest = *UnsafeSrc;
}
- /* Allocate space for the buffer */
- Buffer = ExAllocatePool(PagedPool, Dest->MaximumLength);
-
- /* Copy it */
- RtlCopyMemory(Buffer, Dest->Buffer, Dest->MaximumLength);
-
- /* Set it as the buffer */
- Dest->Buffer = Buffer;
-
/* Return */
return Status;
}
VOID
NTAPI
ReleaseCapturedUnicodeString(IN PUNICODE_STRING CapturedString,
- KPROCESSOR_MODE CurrentMode)
+ IN KPROCESSOR_MODE CurrentMode)
{
- if(CurrentMode != KernelMode) ExFreePool(CapturedString->Buffer);
+ if(CurrentMode != KernelMode && CapturedString->Buffer != NULL)
+ {
+ ExFreePool(CapturedString->Buffer);
+ }
}
/*
(((ULONG_PTR)(Ptr) + sizeof(Type) - 1 < (ULONG_PTR)(Ptr) || \
(ULONG_PTR)(Ptr) + sizeof(Type) - 1 >= (ULONG_PTR)MmUserProbeAddress) ? \
ExRaiseStatus (STATUS_ACCESS_VIOLATION), Default : \
- *(Type *)(Ptr))
+ *(volatile Type *)(Ptr))
#define ProbeForReadBoolean(Ptr) ProbeForReadGenericType(Ptr, BOOLEAN, FALSE)
#define ProbeForReadUchar(Ptr) ProbeForReadGenericType(Ptr, UCHAR, 0)
#define ProbeForReadLargeInteger(Ptr) ((LARGE_INTEGER)ProbeForReadGenericType(&(Ptr)->QuadPart, LONGLONG, 0))
#define ProbeForReadUlargeInteger(Ptr) ((ULARGE_INTEGER)ProbeForReadGenericType(&(Ptr)->QuadPart, ULONGLONG, 0))
+/*
+ * generic information class probing code
+ */
+
+#define ICIF_QUERY 0x1
+#define ICIF_SET 0x2
+#define ICIF_QUERY_SIZE_VARIABLE 0x4
+#define ICIF_SET_SIZE_VARIABLE 0x8
+#define ICIF_SIZE_VARIABLE (ICIF_QUERY_SIZE_VARIABLE | ICIF_SET_SIZE_VARIABLE)
+
+typedef struct _INFORMATION_CLASS_INFO
+{
+ ULONG RequiredSizeQUERY;
+ ULONG RequiredSizeSET;
+ ULONG AlignmentSET;
+ ULONG AlignmentQUERY;
+ ULONG Flags;
+} INFORMATION_CLASS_INFO, *PINFORMATION_CLASS_INFO;
+
+#define ICI_SQ_SAME(Size, Alignment, Flags) \
+ { Size, Size, Alignment, Alignment, Flags }
+
+#define ICI_SQ(SizeQuery, SizeSet, AlignmentQuery, AlignmentSet, Flags) \
+ { SizeQuery, SizeSet, AlignmentQuery, AlignmentSet, Flags }
+
+static inline NTSTATUS
+DefaultSetInfoBufferCheck(UINT Class,
+ const INFORMATION_CLASS_INFO *ClassList,
+ UINT ClassListEntries,
+ PVOID Buffer,
+ ULONG BufferLength,
+ KPROCESSOR_MODE PreviousMode)
+{
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ if (Class >= 0 && Class < ClassListEntries)
+ {
+ if (!(ClassList[Class].Flags & ICIF_SET))
+ {
+ Status = STATUS_INVALID_INFO_CLASS;
+ }
+ else if (ClassList[Class].RequiredSizeSET > 0 &&
+ BufferLength != ClassList[Class].RequiredSizeSET)
+ {
+ if (!(ClassList[Class].Flags & ICIF_SET_SIZE_VARIABLE))
+ {
+ Status = STATUS_INFO_LENGTH_MISMATCH;
+ }
+ }
+
+ if (NT_SUCCESS(Status))
+ {
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ ProbeForRead(Buffer,
+ BufferLength,
+ ClassList[Class].AlignmentSET);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ }
+ }
+ else
+ Status = STATUS_INVALID_INFO_CLASS;
+
+ return Status;
+}
+
+static inline NTSTATUS
+DefaultQueryInfoBufferCheck(UINT Class,
+ const INFORMATION_CLASS_INFO *ClassList,
+ UINT ClassListEntries,
+ PVOID Buffer,
+ ULONG BufferLength,
+ PULONG ReturnLength,
+ KPROCESSOR_MODE PreviousMode)
+{
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ if (Class >= 0 && Class < ClassListEntries)
+ {
+ if (!(ClassList[Class].Flags & ICIF_QUERY))
+ {
+ Status = STATUS_INVALID_INFO_CLASS;
+ }
+ else if (ClassList[Class].RequiredSizeQUERY > 0 &&
+ BufferLength != ClassList[Class].RequiredSizeQUERY)
+ {
+ if (!(ClassList[Class].Flags & ICIF_QUERY_SIZE_VARIABLE))
+ {
+ Status = STATUS_INFO_LENGTH_MISMATCH;
+ }
+ }
+
+ if (NT_SUCCESS(Status))
+ {
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ if (Buffer != NULL)
+ {
+ ProbeForWrite(Buffer,
+ BufferLength,
+ ClassList[Class].AlignmentQUERY);
+ }
+
+ if (ReturnLength != NULL)
+ {
+ ProbeForWriteUlong(ReturnLength);
+ }
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ }
+ }
+ else
+ Status = STATUS_INVALID_INFO_CLASS;
+
+ return Status;
+}
+
/*
* Use IsPointerOffset to test whether a pointer should be interpreted as an offset
* or as a pointer
projects / reactos.git / blobdiff