ReactOS 0.4.15-dev-7934-g1dc8d80
copy.c
Go to the documentation of this file.
1#include "win32k.h"
2
3_IRQL_requires_max_(APC_LEVEL)
4NTSTATUS
5_MmCopyFromCaller(
6 _Out_writes_bytes_all_(Bytes) PVOID Target,
7 _In_reads_bytes_(Bytes) PVOID Source,
8 _In_ UINT Bytes)
9{
10 NTSTATUS Status;
11
12 PAGED_CODE();
13 ASSERT(ExGetPreviousMode() == UserMode);
14
15 Status = STATUS_SUCCESS;
16 _SEH2_TRY
17 {
18 ProbeForRead(Source, Bytes, 1);
19 RtlCopyMemory(Target, Source, Bytes);
20 }
21 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
22 {
23 Status = _SEH2_GetExceptionCode();
24 }
25 _SEH2_END;
26
27 return Status;
28}
29
30_IRQL_requires_max_(APC_LEVEL)
31NTSTATUS
32_MmCopyToCaller(
33 _Out_writes_bytes_all_(Bytes) PVOID Target,
34 _In_reads_bytes_(Bytes) PVOID Source,
35 _In_ UINT Bytes)
36{
37 NTSTATUS Status;
38
39 PAGED_CODE();
40 ASSERT(ExGetPreviousMode() == UserMode);
41
42 Status = STATUS_SUCCESS;
43 _SEH2_TRY
44 {
45 ProbeForWrite(Target, Bytes, 1);
46 RtlCopyMemory(Target, Source, Bytes);
47 }
48 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
49 {
50 Status = _SEH2_GetExceptionCode();
51 }
52 _SEH2_END;
53
54 return Status;
55}
PAGED_CODE
#define PAGED_CODE()
Definition: Bus_PDO_EvalMethod.c:87
NTSTATUS
LONG NTSTATUS
Definition: precomp.h:26
_IRQL_requires_max_
#define _IRQL_requires_max_(irql)
Definition: driverspecs.h:230
APC_LEVEL
#define APC_LEVEL
Definition: env_spec_w32.h:695
ExGetPreviousMode
#define ExGetPreviousMode
Definition: ex.h:140
ProbeForRead
VOID NTAPI ProbeForRead(IN CONST VOID *Address, IN SIZE_T Length, IN ULONG Alignment)
Definition: exintrin.c:102
ProbeForWrite
VOID NTAPI ProbeForWrite(IN PVOID Address, IN SIZE_T Length, IN ULONG Alignment)
Definition: exintrin.c:143
_SEH2_END
#define _SEH2_END
Definition: filesup.c:22
_SEH2_TRY
#define _SEH2_TRY
Definition: filesup.c:19
Status
Status
Definition: gdiplustypes.h:25
EXCEPTION_EXECUTE_HANDLER
#define EXCEPTION_EXECUTE_HANDLER
Definition: excpt.h:85
Bytes
_In_ UINT Bytes
Definition: mmcopy.h:9
ASSERT
#define ASSERT(a)
Definition: mode.c:44
_In_reads_bytes_
#define _In_reads_bytes_(size)
Definition: ms_sal.h:321
_Out_writes_bytes_all_
#define _Out_writes_bytes_all_(size)
Definition: ms_sal.h:362
_In_
#define _In_
Definition: ms_sal.h:308
UINT
unsigned int UINT
Definition: ndis.h:50
Source
_In_ UINT _In_ UINT _In_ PNDIS_PACKET Source
Definition: ndis.h:3169
UserMode
#define UserMode
Definition: asm.h:35
_SEH2_GetExceptionCode
#define _SEH2_GetExceptionCode()
Definition: pseh2_64.h:159
_SEH2_EXCEPT
#define _SEH2_EXCEPT(...)
Definition: pseh2_64.h:34
STATUS_SUCCESS
#define STATUS_SUCCESS
Definition: shellext.h:65
RtlCopyMemory
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
Target
_In_ WDFIOTARGET Target
Definition: wdfrequest.h:306