[cifs-protocol] [Pfif] SMB1 Trans2SetPathInfo() FileEndOfFileInformation is not enforcing share modes

Bill Wesse billwe at microsoft.com
Fri Dec 4 10:45:20 MST 2009

Thanks for the update - my Win7 client is also Ultimate, with no updates.

On another note, I just finished an initial debug on srv.sys; I have considerable analysis to do on the results, specifically tracking down the handles (just to make sure - even though there are no handle failures in either standard or SMB_INFO_PASSTHROUGH FileEndOfFileInformation information level for TRANS2_SET_PATH_INFORMATION).

There are additional functional checks on the information level, when less than SMB_INFO_PASSTHROUGH, which I still need to run down in the documentation.

I doubt I will be able to finish my work today, and do expect to be able to provide some reasonable information early next week.

Of course, this is all about what is supposed to be allowed when a client requests a 'native Windows NT operating system information level' ([MS-SMB] Appendix A note <158>: http://msdn.microsoft.com/en-us/library/cc246806(PROT.13).aspx).

I have thus far not been able to find any specific commentary on this in the WDK documentation (but then, I am not a driver expert).

Thanks for your patience!

Bill Wesse
MCSE, MCTS / Senior Escalation Engineer, US-CSS DSC PROTOCOL TEAM
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Charlotte, NC 28273
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-----Original Message-----
From: Tim Prouty [mailto:tim.prouty at isilon.com] 
Sent: Friday, December 04, 2009 12:20 PM
To: Bill Wesse
Cc: pfif at tridgell.net; cifs-protocol at samba.org
Subject: Re: [Pfif] SMB1 Trans2SetPathInfo() FileEndOfFileInformation is not enforcing share modes

On Dec 3, 2009, at 10:04 AM, Bill Wesse wrote:

> I have retested without SmbSecuritySignatures - results were the same.
> I will hold off on the WordCount/ByteCount truncation against the  
> Dos INVALID_LEVEL error problem  
> (trans2setpathinfo_against_win7_2.pcap) for the time being, and work  
> on the sharing issue (I expect to be soaking in code for the next  
> day or so).

My win7 is a fresh ultimate install with no updates.  I'm going to run  
windows update to see if I can reproduce it.  I'll let you know what I  
find out.


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