[linux-cifs-client] Re: cifs sec=none issue

[Steve French (smfltc)]

>All,
>
>I'm having an issue with the sec=none option.  I can't seem to get the
>sec=none option to work. It always seems to pass a username through.
>
>  
>
Are you making sure you pass "user=" on the mount? Something like eg.

mount -t cifs //server/share /mnt -o user=

sec=none should avoids the warning message in dmesg when passing in no 
user (null user).

>I am testing this on 3 different distros, FC6, SLES10, and SL10.1.  I
>have done tcpdumps and and I have also upped the debug log on samba.
>If I understand this correctly, sec=none should send a "null", or empty,
>username to the samba server.  This doesn't seem to be what I am
>experiencing.
>
>I have tried the -t smbfs and this and it appears that smbfs first tries
>the user that one is logged in as, and then attempts to send a null user
>if the user doesn't work.   cifs appears to behave differently.
>
>Here are the versions I am using:
>
>client:
>
>client # cat /proc/fs/cifs/DebugData
>Display Internal CIFS Data Structures for Debugging
>---------------------------------------------------
>CIFS Version 1.40
>Active VFS Requests: 0
>Servers:
>Shares:
>station6:/proc/fs/cifs #
>
>
>server:
>
>server # rpm -q samba
>samba-3.0.22-13.16
>
>------------------------------------------------------------------------------------------------------------------------
>
>Now, when trying to connect, I will show the commands I issued on the
>client, and the log files from server:
>----------------------------client----------------------------------------------------------
>client # mount -t cifs -o guest //server/tmp /mnt/tmp --verbose
>parsing options: rw,guest
>
>mount.cifs kernel mount options
>unc=//server\tmp,ip=10.100.0.13,user=root,ver=1,rw
>mount error 13 = Permission denied
>Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
>----------------------------------------server samba
>log------------------------------------------------
>  check_ntlm_password:  Authentication for user [root] -> [root] FAILED
>with error NT_STATUS_NO_SUCH_USER
>[2007/01/19 16:50:58, 3] smbd/error.c:error_packet(146)
>  error packet at smbd/sesssetup.c(1063) cmd=115 (SMBsesssetupX)
>NT_STATUS_LOGON_FAILURE
>-------------------------------------------------------------------------------------------------
>
>As expected, this should not work.
>
>Now, when I run it with the sec=none option, I get the same results:
>--------------------------------client-----------------------------------------------
># mount -t cifs -o guest,sec=none //server/tmp /mnt/tmp --verbose
>parsing options: rw,guest,sec=none
>
>mount.cifs kernel mount options
>unc=//server\tmp,ip=10.100.0.13,user=root,ver=1,rw,sec=none
>mount error 13 = Permission denied
>Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
>------------------------------------server samba
>log---------------------------------------------------
>  check_ntlm_password:  Authentication for user [root] -> [root] FAILED
>with error NT_STATUS_NO_SUCH_USER
>[2007/01/19 16:51:55, 3] smbd/error.c:error_packet(146)
>  error packet at smbd/sesssetup.c(1063) cmd=115 (SMBsesssetupX)
>NT_STATUS_LOGON_FAILURE
>[2007/01/19 16:51:55, 3] smbd/process.c:timeout_processing(1340)
>-----------------------------------------------------------------------------------------
>
>Again, this doesn't work.  In the verbose output of cifs it even shows
>it is going to pass the root user even though sec=none.
>
>Is there something else I am missing?
>
>Thanks
>
>Matt
>  
>