[Samba] Virtual File System modules not running

[Dhanshri Mahale]

Following are the steps we performed to run vfs and error encountered. Also
attached vfs_demo.c file to look into.

http://nnc3.com/LJ2013/LJ/220/11262.html

Steps are followed from link above.


[global]
        log file = /var/log/samba/%m.log
log level = 10
max log size = 1000
level2 oplocks = true
        passwd chat = *Enter\snew\s*\spassword:* %n\n
*Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
        server role = standalone server
        obey pam restrictions = yes
        map to guest = bad user
        encrypt passwords = true
        public = yes
        passwd program = /usr/bin/passwd %u
        passdb backend = tdbsam
        dns proxy = no
        server string = %h server (Samba, Ubuntu)
        default = share
        unix password sync = yes
        workgroup = WORKGROUP
        os level = 20
        guest only = yes
        syslog = 0
        panic action = /usr/share/samba/panic-action %d
        usershare allow guests = yes
        max log size = 1000
        pam password change = yes
[share]

       comment = Ubuntu file server

       path = /srv/samba/share

       browsable = yes

       guest ok = yes

       readonly = no

       create mask = 0755

       vfs objects = full_audit

        full_audit:failure = all
       full_audit:success = all
       full_audit:prefix = %u|%I|%m|%S
        full_audit:failure = all !open
        full_audit:facility = LOCAL7
        full_audit:priority = ALERT

Above details when entered in smb.conf file client successfully connects to
server using map network drive and all the messages are stored in syslog
file.


output when samba runs is :

root at ubuntu:/etc/samba# sudo restart smbd
smbd start/running, process 2619

root at ubuntu:/etc/samba# sudo restart nmbd
nmbd start/running, process 2627

root at ubuntu:/etc/samba# smbclient //localhost/share
-Usome-user%some-password
Unknown parameter encountered: "server role"
Ignoring unknown parameter "server role"
Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.6.3]
smb: \>

smb: \> ls
  .
      D        0  Tue Jan 20 04:37:27 2015
  ..                                  D        0  Tue Jan 20 04:33:15 2015
  New Text Document.txt               A      187  Fri Jan  2 03:35:24 2015
  tesxt1.txt                                  24  Fri Jan  9 05:51:53 2015
  new1.txt                                     8  Sun Jan 18 05:24:35 2015
  test.txt                                    34  Wed Dec 10 11:37:38 2014
  sharayu                             D        0  Mon Jan 19 02:13:29 2015
  new1.txt~                                    8  Sun Jan 18 05:24:35 2015
  sharayu 1                           D        0  Tue Dec 30 01:16:05 2014
  test1.txt                                   29  Tue Jan 13 05:34:12 2015
  New folder                          D        0  Wed Dec 10 11:41:16 2014
  vcbbv.txt                           A       94  Mon Jan 19 05:39:22 2015

        58771 blocks of size 262144. 17794 blocks available

smb: \> put vcbbv.txt tesxt1.tx
putting file vcbbv.txt as \tesxt1.tx (1.4 kb/s) (average 1.4 kb/s)
smb: \>




but if we add below part in smb.conf and restart samba , client is unable
to connect to server.

[share]

       comment = Ubuntu file server

       path = /srv/samba/share

       browsable = yes

       guest ok = yes

       readonly = no

       create mask = 0755

       vfs objects = vfs_demo

       vfs_demo: audit path = vcbbv.txt

//vcbbv.txt is file in shared folder


Output is as follows:

root at ubuntu:/etc/samba# smbclient //localhost/share
-Usome-user%some-password
Unknown parameter encountered: "server role"
Ignoring unknown parameter "server role"
Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.6.3]
tree connect failed: NT_STATUS_BAD_NETWORK_NAME


Also we tried to add entire file name in vfs objects = vfs_demo.so , even
that didnt work
We copied vfs_demo.so file generated in after compiling vfs_demo.c in
/usr/local/samba/lib/vfs
where other vfs*.so files are placed . But vfs_demo modules isnt running.


We also tried debugging smbd process uding GDB but vfs module doesnt seem
to be called.

Thanks.