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[WIN32K]

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- Reinstate ProbeForWrite call in MmCopyToCaller
CORE-8095 #resolve

svn path=/trunk/; revision=62958
This commit is contained in:
Thomas Faber 2014-04-24 17:19:20 +00:00
parent 2ad472f039
commit 3eff9e0536
2 changed files with 41 additions and 10 deletions
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36
reactos/win32ss/user/ntuser/misc/copy.c
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@ -1,12 +1,22 @@
#include "win32k.h"
NTSTATUS _MmCopyFromCaller( PVOID Target, PVOID Source, UINT Bytes ) {
NTSTATUS Status = STATUS_SUCCESS;
_IRQL_requires_max_(APC_LEVEL)
NTSTATUS
_MmCopyFromCaller(
_Out_writes_bytes_all_(Bytes) PVOID Target,
_In_reads_bytes_(Bytes) PVOID Source,
_In_ UINT Bytes)
{
NTSTATUS Status;
PAGED_CODE();
ASSERT(ExGetPreviousMode() == UserMode);
Status = STATUS_SUCCESS;
_SEH2_TRY
{
ProbeForRead(Source,Bytes,1);
RtlCopyMemory(Target,Source,Bytes);
ProbeForRead(Source, Bytes, 1);
RtlCopyMemory(Target, Source, Bytes);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
@ -17,13 +27,23 @@ NTSTATUS _MmCopyFromCaller( PVOID Target, PVOID Source, UINT Bytes ) {
return Status;
}
NTSTATUS _MmCopyToCaller( PVOID Target, PVOID Source, UINT Bytes ) {
NTSTATUS Status = STATUS_SUCCESS;
_IRQL_requires_max_(APC_LEVEL)
NTSTATUS
_MmCopyToCaller(
_Out_writes_bytes_all_(Bytes) PVOID Target,
_In_reads_bytes_(Bytes) PVOID Source,
_In_ UINT Bytes)
{
NTSTATUS Status;
PAGED_CODE();
ASSERT(ExGetPreviousMode() == UserMode);
Status = STATUS_SUCCESS;
_SEH2_TRY
{
/* ProbeForWrite(Target,Bytes,1); */
RtlCopyMemory(Target,Source,Bytes);
ProbeForWrite(Target, Bytes, 1);
RtlCopyMemory(Target, Source, Bytes);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{

15
reactos/win32ss/user/ntuser/mmcopy.h
View file

@ -1,8 +1,19 @@
#pragma once
NTSTATUS _MmCopyFromCaller( PVOID Target, PVOID Source, UINT Bytes );
NTSTATUS _MmCopyToCaller( PVOID Target, PVOID Source, UINT Bytes );
_IRQL_requires_max_(APC_LEVEL)
NTSTATUS
_MmCopyFromCaller(
_Out_writes_bytes_all_(Bytes) PVOID Target,
_In_reads_bytes_(Bytes) PVOID Source,
_In_ UINT Bytes);
_IRQL_requires_max_(APC_LEVEL)
NTSTATUS
_MmCopyToCaller(
_Out_writes_bytes_all_(Bytes) PVOID Target,
_In_reads_bytes_(Bytes) PVOID Source,
_In_ UINT Bytes);
#define MmCopyFromCaller(x,y,z) _MmCopyFromCaller((PCHAR)(x),(PCHAR)(y),(UINT)(z))
#define MmCopyToCaller(x,y,z) _MmCopyToCaller((PCHAR)(x),(PCHAR)(y),(UINT)(z))