Trying again seem to be having problems getting this on the list sorry
for the delay :
The Question:
In [MS-SMB2] section 2.2.13 the list of CreateOptions doesn't seems to
be complete. I have notice that Vista is sending a 0x00000021 when
doing an open for a File System Info call. The FILE_DIRECTORY_FILE
(0x00000001) is define in the spec, but the 0x00000020 doesn't seem to
be define. These options seem to match up with ones I have defined in
my SMB. In my code I have this defined as NTCREATEX
OPTION_ASYNC_ALERT. So if the bits aren't defined should they be
ignore? Are they reserved? What should a client/server do about these
undefined bits?
The Answer:
Hi, George,
The definition of the following bits are missing from the documentation.
FILE_SYNCHRONOUS_IO_ALERT 0x00000010
FILE FILE_SYNCHRONOUS_IO_NONALERT 0x00000020
FILE_COMPLETE_IF_OPLOCKED 0x00000100
FILE_OPEN_BY_FILE_ID
0x00002000
FILE_RESERVE_OPFILTER 0x00100000
They all should be considered as “Reserved” bits.
The bits 0x00000010 , 0x00000020, 0x00000100 SHOULD not be set by
the client and the server MUST ignore these bits.
The bits 0x00002000 and 0x000100000 SHOULD be set to zero by the
client and the server MUST fail the request with
STATUS_INVALID_PARAMETER error if they are set to 1.
As a windows behavior, windows client passes through these bits
unchanged as specified by the calling application. An application
running on the Windows client MAY set these bits which the Windows
client passes through unchanged.
We will update [MS-SMB2] section 2.2.13 in the future release.
Thanks
Hongwei Sun-MSFT
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