Hello all,
I have a Windows software which tries to access dos device name but it is failing:
0009:Call KERNEL32.CreateFileA(0060f588 "\\\\.\\d6CDE-0",40000000,00000002,00000000,00000003,00000000,00000000) ret=00b1117f
0009:Call ntdll.RtlInitAnsiString(0060f49c,0060f588 "\\\\.\\d6CDE-0") ret=7b036296
0009:Ret ntdll.RtlInitAnsiString() retval=0060f49c ret=7b036296
0009:Call ntdll.RtlAnsiStringToUnicodeString(3fff8bf8,0060f49c,00000000) ret=7b0362fb
0009:Ret ntdll.RtlAnsiStringToUnicodeString() retval=00000000 ret=7b0362fb
0009:Call ntdll._wcsicmp(3fff8c00 L"\\\\.\\d6CDE-0",7b09d0c0 L"CONIN$") ret=7b0355c9
0009:Ret ntdll._wcsicmp() retval=fffffff9 ret=7b0355c9
0009:Call ntdll._wcsicmp(3fff8c00 L"\\\\.\\d6CDE-0",7b09d0ce L"CONOUT$") ret=7b035636
0009:Ret ntdll._wcsicmp() retval=fffffff9 ret=7b035636
0009:Call ntdll.wcsncmp(3fff8c00 L"\\\\.\\d6CDE-0",7b09d644 L"\\\\.\\",00000004) ret=7b035670
0009:Ret ntdll.wcsncmp() retval=00000000 ret=7b035670
0009:Call ntdll.iswalpha(00000064) ret=7b0356cd
0009:Ret ntdll.iswalpha() retval=00000102 ret=7b0356cd
0009:Call ntdll._wcsnicmp(3fff8c08 L"d6CDE-0",7b09d638 L"PIPE\\",00000005) ret=7b0356f5
0009:Ret ntdll._wcsnicmp() retval=fffffff4 ret=7b0356f5
0009:Call ntdll._wcsnicmp(3fff8c08 L"d6CDE-0",7b09d624 L"MAILSLOT\\",00000009) ret=7b03570e
0009:Ret ntdll._wcsnicmp() retval=fffffff7 ret=7b03570e
0009:Call ntdll.RtlIsDosDeviceName_U(3fff8c08 L"d6CDE-0") ret=7b035724
0009:Ret ntdll.RtlIsDosDeviceName_U() retval=00000000 ret=7b035724
0009:Call ntdll.RtlDosPathNameToNtPathName_U(3fff8c00 L"\\\\.\\d6CDE-0",0060f458,00000000,00000000) ret=7b035769
0009:Ret ntdll.RtlDosPathNameToNtPathName_U() retval=00000001 ret=7b035769
0009:Call ntdll.NtCreateFile(0060f454,40100080,0060f474,0060f460,00000000,00000000,00000002,00000001,00000060,00000000,00000000) ret=7b03581e
0009:Ret ntdll.NtCreateFile() retval=c0000034 ret=7b03581e
0009:Call ntdll.RtlNtStatusToDosError(c0000034) ret=7b035a11
0009:Ret ntdll.RtlNtStatusToDosError() retval=00000002 ret=7b035a11
0009:Call ntdll.RtlFreeUnicodeString(0060f458) ret=7b03592b
0009:Ret ntdll.RtlFreeUnicodeString() retval=0060f458 ret=7b03592b
0009:Ret KERNEL32.CreateFileA() retval=ffffffff ret=00b1117f
The problem is, that wine doesn't recognize "\\\\.\\d6CDE-0" as valid DOS device name:
Even when I created the device in HKEY_LOCAL_MACHINE\Software\Wine\Ports it doesn't allow to open it.
When I patched the corresponding DLL to use COM81 and created the device in Ports, it works okay (can open the device).
I want to write a patch to ntdll/path.c to recognize my string as DOS device but I want it to be generic enough to be acceptable.
What approach do you suggest? Can I add a generic match, something like: "\\\\.\\[^\\]+$" ?
To add some context here, the software is for controlling USB osclloscope from Hantek:
It installs a driver which creates mentioned "DOS device" and communicates through it using ioctl.
I am reversing the driver and I'll create a Linux char device to handle those ioctl calls and talk to the USB device using libusb.
Thanks.
--
S pozdravom / Best regards
Daniel Kucera.