Bug 5469 - smbc_getxattr(): Flaky behaviour
smbc_getxattr(): Flaky behaviour
Product: Samba 3.0
Classification: Unclassified
Component: libsmbclient
x64 Linux
: P3 major
: none
Assigned To: Derrell Lipman
Samba QA Contact
Depends on:
  Show dependency treegraph
Reported: 2008-05-17 06:21 UTC by Veeral Shah
Modified: 2009-01-03 09:50 UTC (History)
1 user (show)

See Also:

tcpdump of smb protocol messages for the success case (664.92 KB, application/octet-stream)
2008-05-21 04:15 UTC, Veeral Shah
no flags Details
Debug messages - for the error case (2.80 KB, application/octet-stream)
2008-05-21 04:16 UTC, Veeral Shah
no flags Details
Debug messges (gzipped text filed) - Success case (7.00 KB, application/octet-stream)
2008-05-21 04:17 UTC, Veeral Shah
no flags Details

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Description Veeral Shah 2008-05-17 06:21:29 UTC
smbc_getxattr() is behaving a little strangely. I am attempting to get extended attributes for a score of files on a public share (which does not require user_name/passwd credentials to connect to). The name of the attribute that I am interested in is "system.nt_sec_desc.owner+". For first few runs, this API behaved correctly and returned me the correct owner name . But in subsequent runs of my app, the same API invocation results in error. The errno is 61 (ENODATA). Is this a known issue?
Comment 1 Derrell Lipman 2008-05-20 13:00:33 UTC
This is not a known issue.  If you would send me packet traces of a working and a non-working run of your application, I'll see if I can track down what's happening.

If I understand you correctly, you're starting your application *from scratch* each time, and some times it works and some times it doesn't?  If so, I'd certainly expect the same results each time...

To create a packet trace, use this command line:

  tcpdump -s 0 -w mytrace.pcap

(Obviously, if you're creating multiple traces, you'll replace the file name at the end with a new name each time.)

Comment 2 Veeral Shah 2008-05-21 04:15:54 UTC
Created attachment 3298 [details]
tcpdump of smb protocol messages for the success case
Comment 3 Veeral Shah 2008-05-21 04:16:27 UTC
Created attachment 3299 [details]
Debug messages - for the error case
Comment 4 Veeral Shah 2008-05-21 04:17:05 UTC
Created attachment 3300 [details]
Debug messges (gzipped text filed) - Success case
Comment 5 Veeral Shah 2008-05-21 04:28:06 UTC
http://www.sendspace.com/file/61qe4i points to the tcpdump of the error case,
Comment 6 Derrell Lipman 2008-05-30 08:34:05 UTC
I don't think you uploaded the correct packet traces.  In the "worked" trace, there is no SMB traffic and in the "didnt_work" trace, there is very little, and no relevant, SMB traffic.  I need to be able to see the get attribute requests and responses in the success and failure cases to be able to make sense of the problem you're having.

Comment 7 Derrell Lipman 2009-01-03 09:50:14 UTC
No reply in six months.  Re-open if necessary.