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Implemented NtRead/WriteVirtualMemory.

oldstable
Alexandre Julliard 2003-07-08 21:18:45 +00:00
parent 7535424254
commit 4f4b980c1e
4 changed files with 75 additions and 56 deletions
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58
dlls/kernel/process.c
View File

@ -405,18 +405,9 @@ BOOL WINAPI SetProcessPriorityBoost(HANDLE hprocess,BOOL disableboost)
BOOL WINAPI ReadProcessMemory( HANDLE process, LPCVOID addr, LPVOID buffer, SIZE_T size,
SIZE_T *bytes_read )
{
DWORD res;
SERVER_START_REQ( read_process_memory )
{
req->handle = process;
req->addr = (void *)addr;
wine_server_set_reply( req, buffer, size );
if ((res = wine_server_call_err( req ))) size = 0;
}
SERVER_END_REQ;
if (bytes_read) *bytes_read = size;
return !res;
NTSTATUS status = NtReadVirtualMemory( process, addr, buffer, size, bytes_read );
if (status) SetLastError( RtlNtStatusToDosError(status) );
return !status;
}
@ -426,46 +417,9 @@ BOOL WINAPI ReadProcessMemory( HANDLE process, LPCVOID addr, LPVOID buffer, SIZE
BOOL WINAPI WriteProcessMemory( HANDLE process, LPVOID addr, LPCVOID buffer, SIZE_T size,
SIZE_T *bytes_written )
{
static const int zero;
unsigned int first_offset, last_offset, first_mask, last_mask;
DWORD res;
if (!size)
{
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
/* compute the mask for the first int */
first_mask = ~0;
first_offset = (unsigned int)addr % sizeof(int);
memset( &first_mask, 0, first_offset );
/* compute the mask for the last int */
last_offset = (size + first_offset) % sizeof(int);
last_mask = 0;
memset( &last_mask, 0xff, last_offset ? last_offset : sizeof(int) );
SERVER_START_REQ( write_process_memory )
{
req->handle = process;
req->addr = (char *)addr - first_offset;
req->first_mask = first_mask;
req->last_mask = last_mask;
if (first_offset) wine_server_add_data( req, &zero, first_offset );
wine_server_add_data( req, buffer, size );
if (last_offset) wine_server_add_data( req, &zero, sizeof(int) - last_offset );
if ((res = wine_server_call_err( req ))) size = 0;
}
SERVER_END_REQ;
if (bytes_written) *bytes_written = size;
{
char dummy[32];
SIZE_T read;
ReadProcessMemory( process, addr, dummy, sizeof(dummy), &read );
}
return !res;
NTSTATUS status = NtWriteVirtualMemory( process, addr, buffer, size, bytes_written );
if (status) SetLastError( RtlNtStatusToDosError(status) );
return !status;
}

8
dlls/ntdll/ntdll.spec
View File

@ -186,7 +186,7 @@
@ stub NtRaiseHardError
@ stdcall NtReadFile(long long long long long long long long long)
@ stub NtReadRequestData
@ stub NtReadVirtualMemory
@ stdcall NtReadVirtualMemory(long ptr ptr long ptr)
@ stub NtRegisterNewDevice
@ stdcall NtRegisterThreadTerminatePort(ptr)
@ stub NtReleaseMutant
@ -257,7 +257,7 @@
@ stub NtWaitLowEventPair
@ stdcall NtWriteFile(long long ptr ptr ptr ptr long ptr ptr)
@ stub NtWriteRequestData
@ stub NtWriteVirtualMemory
@ stdcall NtWriteVirtualMemory(long ptr ptr long ptr)
@ stub PfxFindPrefix
@ stub PfxInitialize
@ stub PfxInsertPrefix
@ -717,7 +717,7 @@
@ stub ZwRaiseHardError
@ stdcall ZwReadFile(long long long long long long long long long) NtReadFile
@ stub ZwReadRequestData
@ stub ZwReadVirtualMemory
@ stdcall ZwReadVirtualMemory(long ptr ptr long ptr) NtReadVirtualMemory
@ stub ZwRegisterNewDevice
@ stdcall ZwRegisterThreadTerminatePort(ptr) NtRegisterThreadTerminatePort
@ stub ZwReleaseMutant
@ -786,7 +786,7 @@
@ stub ZwWaitLowEventPair
@ stdcall ZwWriteFile(long long ptr ptr ptr ptr long ptr ptr) NtWriteFile
@ stub ZwWriteRequestData
@ stub ZwWriteVirtualMemory
@ stdcall ZwWriteVirtualMemory(long ptr ptr long ptr) NtWriteVirtualMemory
@ cdecl _CIpow() NTDLL__CIpow
@ stub __eCommonExceptions
@ stub __eEmulatorInit

63
dlls/ntdll/virtual.c
View File

@ -1542,3 +1542,66 @@ NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
if (!msync( addr, *size_ptr, MS_SYNC )) return STATUS_SUCCESS;
return STATUS_NOT_MAPPED_DATA;
}
/***********************************************************************
* NtReadVirtualMemory (NTDLL.@)
* ZwReadVirtualMemory (NTDLL.@)
*/
NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
SIZE_T size, SIZE_T *bytes_read )
{
NTSTATUS status;
SERVER_START_REQ( read_process_memory )
{
req->handle = process;
req->addr = (void *)addr;
wine_server_set_reply( req, buffer, size );
if ((status = wine_server_call( req ))) size = 0;
}
SERVER_END_REQ;
if (bytes_read) *bytes_read = size;
return status;
}
/***********************************************************************
* NtWriteVirtualMemory (NTDLL.@)
* ZwWriteVirtualMemory (NTDLL.@)
*/
NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
SIZE_T size, SIZE_T *bytes_written )
{
static const unsigned int zero;
unsigned int first_offset, last_offset, first_mask, last_mask;
NTSTATUS status;
if (!size) return STATUS_INVALID_PARAMETER;
/* compute the mask for the first int */
first_mask = ~0;
first_offset = (unsigned int)addr % sizeof(int);
memset( &first_mask, 0, first_offset );
/* compute the mask for the last int */
last_offset = (size + first_offset) % sizeof(int);
last_mask = 0;
memset( &last_mask, 0xff, last_offset ? last_offset : sizeof(int) );
SERVER_START_REQ( write_process_memory )
{
req->handle = process;
req->addr = (char *)addr - first_offset;
req->first_mask = first_mask;
req->last_mask = last_mask;
if (first_offset) wine_server_add_data( req, &zero, first_offset );
wine_server_add_data( req, buffer, size );
if (last_offset) wine_server_add_data( req, &zero, sizeof(int) - last_offset );
if ((status = wine_server_call( req ))) size = 0;
}
SERVER_END_REQ;
if (bytes_written) *bytes_written = size;
return status;
}

2
include/winternl.h
View File

@ -977,6 +977,7 @@ NTSTATUS WINAPI NtQueryValueKey(HKEY,const UNICODE_STRING *,KEY_VALUE_INFORMATI
NTSTATUS WINAPI NtQueryVirtualMemory(HANDLE,LPCVOID,MEMORY_INFORMATION_CLASS,PVOID,ULONG,ULONG*);
void WINAPI NtRaiseException(PEXCEPTION_RECORD,PCONTEXT,BOOL);
NTSTATUS WINAPI NtReadFile(HANDLE,HANDLE,PIO_APC_ROUTINE,PVOID,PIO_STATUS_BLOCK,PVOID,ULONG,PLARGE_INTEGER,PULONG);
NTSTATUS WINAPI NtReadVirtualMemory(HANDLE,const void*,void*,SIZE_T,SIZE_T*);
NTSTATUS WINAPI NtReleaseSemaphore(HANDLE,ULONG,PULONG);
NTSTATUS WINAPI NtReplaceKey(POBJECT_ATTRIBUTES,HKEY,POBJECT_ATTRIBUTES);
NTSTATUS WINAPI NtResetEvent(HANDLE,PULONG);
@ -1003,6 +1004,7 @@ NTSTATUS WINAPI NtUnmapViewOfSection(HANDLE,PVOID);
NTSTATUS WINAPI NtWaitForSingleObject(HANDLE,BOOLEAN,const LARGE_INTEGER*);
NTSTATUS WINAPI NtWaitForMultipleObjects(ULONG,const HANDLE*,BOOLEAN,BOOLEAN,const LARGE_INTEGER*);
NTSTATUS WINAPI NtWriteFile(HANDLE,HANDLE,PIO_APC_ROUTINE,PVOID,PIO_STATUS_BLOCK,const void*,ULONG,PLARGE_INTEGER,PULONG);
NTSTATUS WINAPI NtWriteVirtualMemory(HANDLE,void*,const void*,SIZE_T,SIZE_T*);
void WINAPI RtlAcquirePebLock(void);
BYTE WINAPI RtlAcquireResourceExclusive(LPRTL_RWLOCK,BYTE);