createfile()问题？

[vcshcn]

我写了一个vxd，用createfile加载，返回-1
可是我用vtoolsd的vxd view确实加载进了内存，这是为什么？

[wowocock]

你的原代码呢？？用C++还是汇编写的，程序有没有错呢？路径对吗？
TESTVXD。ASM
.386p
.model flat,stdcall
option casemap:none
include \masm32\include\windows.inc
include \masm32\include\user32.inc
includelib \masm32\lib\user32.lib ; calls to functions in user32.lib and kernel32.lib
include \masm32\include\kernel32.inc
includelib \masm32\lib\kernel32.lib

.data
hFile dd ?
FileName db '\\.\FirstVxd.vxd',0
Caption db 'Test Dynamic Vxd',0
ErrTest db 'Test error!',0
OKTest db 'Load Dynamiv Vxd OK!',0


.code
start:
invoke CreateFileA,addr FileName,0,0,NULL,0,FILE_FLAG_DELETE_ON_CLOSE,NULL
mov hFile,eax
cmp eax,INVALID_HANDLE_VALUE
jnz LoadOK
invoke MessageBoxA,0,offset ErrTest,offset Caption,MB_OK
jmp Exit
LoadOK:
invoke MessageBoxA,0,offset OKTest,offset Caption,MB_OK
invoke CloseHandle,hFile
Exit:
invoke ExitProcess,0
end start

FIRSTVXD。ASM
.386p
include \masm32\win98ddk\vmm.inc
include \masm32\win98ddk\shell.inc
include \masm32\win98ddk\debug.inc

; #########################################################################
DECLARE_VIRTUAL_DEVICE \
FIRSTVXD,\
1 ,0, \
FIRSTVXD_Control,\
UNDEFINED_DEVICE_ID, \
UNDEFINED_INIT_ORDER


; #########################################################################

Begin_control_dispatch FIRSTVXD
Control_Dispatch Create_VM, OnVMCreate
Control_Dispatch VM_Terminate, OnVMClose
Control_Dispatch Sys_Dynamic_Device_Init , OnDynInit
Control_Dispatch Sys_Dynamic_Device_Exit ,OnDynExit
Control_Dispatch W32_DeviceIoControl , OnDeviceIoControl
End_control_dispatch FIRSTVXD

VxD_PAGEABLE_DATA_SEG
MsgTitle db 'VxD MessageBox',0
VMCreated db 'A VM is created',0
VMDestroyed db 'A VM is destroyed',0
VxdCreated db 'A Vxd is being loaded',0
VxdDestroyed db ' Vxd is being destroyed',0
VxD_PAGEABLE_DATA_ENDS

VxD_PAGEABLE_CODE_SEG
BeginProc OnVMCreate
mov ecx, OFFSET32 VMCreated
CommonCodeVM:
VMMCall Get_sys_vm_handle
mov eax,MB_OK+MB_ICONEXCLAMATION
mov edi, OFFSET32 MsgTitle
xor esi,esi
xor edx,edx
VxDCall SHELL_Message
ret
EndProc OnVMCreate

BeginProc OnVMClose
mov ecx,OFFSET32 VMDestroyed
jmp CommonCodeVM
EndProc OnVMClose

BeginProc OnDynInit
mov ecx, OFFSET32 VxdCreated
CommonCodeVxd:
VMMCall Get_sys_vm_handle
mov eax,MB_OK+MB_ICONEXCLAMATION
mov edi, OFFSET32 MsgTitle
xor esi,esi
xor edx,edx
VxDCall SHELL_Message
ret
EndProc OnDynInit

BeginProc OnDynExit
mov ecx,OFFSET32 VxdDestroyed
jmp CommonCodeVxd
EndProc OnDynExit

BeginProc OnDeviceIoControl
xor eax,eax
ret
EndProc OnDeviceIoControl

VxD_PAGEABLE_CODE_ENDS
end

[Hume]

注意VxD的反悔值...

[vcshcn]

用createfile返回-1
用vtoolsd的vxdload就可以成功加载，不明白

[Hume]

看看代码才知道了...

[vcshcn]

procedure TForm1.Button1Click(Sender: TObject);
var hVxd:THandle;
begin
hVxd:=CreateFile(pchar('\\.\mem.vxd'),0,0,nil,0,FILE_FLAG_DELETE_ON_CLOSE,0);
if hVxd=INVALID_HANDLE_VALUE then
begin
ShowMessage(SysErrorMessage(GetLastError()));
end
else
begin
ShowMessage('ok');
CloseHandle(hVxd);
end;
end;