Problems with file creation, what means L"\\??\\C:\\" vs. L"C:\\"

[Tobias Burnus]

Hello,

I try to create a file with Origin 6.0 and saving (only) in Origin's internal
format fails. Writing other file types (in Origin) to that directory
works flawlessly.
(Below the output using +file,+ntdll)

First, kernel/file.c's CreateFileW is called
-------------
trace:file:CreateFileW L"C:\\Program Files\\origin6.0\\UNTITLED.OPJ"
GENERIC_READ GENERIC_WRITE FILE_SHARE_READ FILE_SHARE_WRITE  creation 5
attributes 0x80
-------------
(creation 5 = TRUNCATE_EXISTING; attributes 0x80 = FILE_ATTRIBUTE_NORMAL)

which then calls NtCreateFile:

-------------
trace:ntdll:NtCreateFile handle=0x406de164 access=c0000000
name=L"\\??\\C:\\Program Files\\origin6.0\\UNTITLED.OPJ"
objattr=00000040 root=(nil) sec=(nil) io=0x406de168
alloc_size=(nil)attr=00000080 sharing=00000001 disp=1 options=00000050
ea=(nil).0x00000000
-------------
(access=c0000000 = GENERIC_READ|GENERIC_WRITE = 0x80000000|0x40000000 
objattr=00000040 = OBJ_CASE_INSENSITIVE)

Which fails then with:
-------------
warn:file:wine_nt_to_unix_file_name L"UNTITLED.OPJ" not found in /home/wine/.wine/dosdevices/c:/Program Files/origin6.0
warn:ntdll:NtCreateFile L"\\??\\C:\\Program Files\\origin6.0\\UNTITLED.OPJ" not found (c0000034)
warn:file:CreateFileW Unable to create file L"C:\\Program Files\\origin6.0\\UNTITLED.OPJ" (status c0000034)
trace:file:CreateFileW returning 0xffffffff
-----------

Except for the L"\\??\\" whick looks odd to me, I frankly have no idea
what's going wrong. Any tips welcome.

(Details can be found from line 675 on in
http://bugs.winehq.org/attachment.cgi?id=958 of Bug
http://bugs.winehq.org/show_bug.cgi?id=3115 )



Tobias