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Linux Kernel 2.6.9 for OMAP1710

The CIFS VFS support for Linux supports many advanced network filesystem 
features such as heirarchical dfs like namespace, hardlinks, locking and more.  
It was designed to comply with the SNIA CIFS Technical Reference (which 
supersedes the 1992 X/Open SMB Standard) as well as to perform best practice 
practical interoperability with Windows 2000, Windows XP, Samba and equivalent 
servers.  

For questions or bug reports please contact:
    [e-mail] ([e-mail]) 

Build instructions:
==================
For Linux 2.4:
1) Get the kernel source (e.g.from http://www.kernel.org)
and download the cifs vfs source (see the project page
at http://us1.samba.org/samba/Linux_CIFS_client.html)
and change directory into the top of the kernel directory
then patch the kernel (e.g. "patch -p1 < cifs_24.patch") 
to add the cifs vfs to your kernel configure options if
it has not already been added (e.g. current SuSE and UL
users do not need to apply the cifs_24.patch since the cifs vfs is
already in the kernel configure menu) and then
mkdir linux/fs/cifs and then copy the current cifs vfs files from
the cifs download to your kernel build directory e.g.

	cp <cifs_download_dir>/fs/cifs/* to <kernel_download_dir>/fs/cifs
	
2) make menuconfig (or make xconfig)
3) select cifs from within the network filesystem choices
4) save and exit
5) make dep
6) make modules (or "make" if CIFS VFS not to be built as a module)

For Linux 2.6:
1) Download the kernel (e.g. from http://www.kernel.org or from bitkeeper
at bk://linux.bkbits.net/linux-2.5) and change directory into the top
of the kernel directory tree (e.g. /usr/src/linux-2.5.73)
2) make menuconfig (or make xconfig)
3) select cifs from within the network filesystem choices
4) save and exit
5) make


Installation instructions:
=========================
If you have built the CIFS vfs as module (successfully) simply
type "make modules_install" (or if you prefer, manually copy the file to
the modules directory e.g. /lib/modules/2.4.10-4GB/kernel/fs/cifs/cifs.o).

If you have built the CIFS vfs into the kernel itself, follow the instructions
for your distribution on how to install a new kernel (usually you
would simply type "make install").

If you do not have the utility mount.cifs (in the Samba 3.0 source tree and on 
the CIFS VFS web site) copy it to the same directory in which mount.smbfs and 
similar files reside (usually /sbin).  Although the helper software is not  
required, mount.cifs is recommended.  Eventually the Samba 3.0 utility program 
"net" may also be helpful since it may someday provide easier mount syntax for
users who are used to Windows e.g.  net use <mount point> <UNC name or cifs URL>
Note that running the Winbind pam/nss module (logon service) on all of your
Linux clients is useful in mapping Uids and Gids consistently across the
domain to the proper network user.  The mount.cifs mount helper can be
trivially built from Samba 3.0 or later source e.g. by executing:

	gcc samba/source/client/mount.cifs.c -o mount.cifs

Allowing User Mounts
====================
To permit users to mount and unmount over directories they own is possible
with the cifs vfs.  A way to enable such mounting is to mark the mount.cifs
utility as suid (e.g. "chmod +s /sbin/mount/cifs). To enable users to 
umount shares they mount requires
1) mount.cifs version 1.4 or later
2) an entry for the share in /etc/fstab indicating that a user may
unmount it e.g.
//server/usersharename  /mnt/username cifs user 0 0

Note that when the mount.cifs utility is run suid (allowing user mounts), 
in order to reduce risks, the "nosuid" mount flag is passed in on mount to
disallow execution of an suid program mounted on the remote target.
When mount is executed as root, nosuid is not passed in by default,
and execution of suid programs on the remote target would be enabled
by default. This can be changed, as with nfs and other filesystems, 
by simply specifying "nosuid" among the mount options. For user mounts 
though to be able to pass the suid flag to mount requires rebuilding 
mount.cifs with the following flag: 
 
        gcc samba/source/client/mount.cifs.c -DCIFS_ALLOW_USR_SUID -o mount.cifs

There is a corresponding manual page for cifs mounting in the Samba 3.0 and
later source tree in docs/manpages/mount.cifs.8 

Samba Considerations 
==================== 
To get the maximum benefit from the CIFS VFS, we recommend using a server that 
supports the SNIA CIFS Unix Extensions standard (e.g.  Samba 2.2.5 or later or 
Samba 3.0) but the CIFS vfs works fine with a wide variety of CIFS servers.  
Note that uid, gid and file permissions will display default values if you do 
not have a server that supports the Unix extensions for CIFS (such as Samba 
2.2.5 or later).  To enable the Unix CIFS Extensions in the Samba server, add 
the line: 

	unix extensions = yes
	
to your smb.conf file on the server.  Note that the following smb.conf settings 
are also useful (on the Samba server) when the majority of clients are Unix or 
Linux: 

	case sensitive = yes
	delete readonly = yes 
	ea support = yes

Note that server ea support is required for supporting xattrs from the Linux
cifs client, and that EA support is present in later versions of Samba (e.g. 
3.0.6 and later (also EA support works in all versions of Windows, at least to
shares on NTFS filesystems).  Extended Attribute (xattr) support is an optional
feature of most Linux filesystems which may require enabling via
make menuconfig
 
Some administrators may want to change Samba's smb.conf "map archive" and 
"create mask" parameters from the default.  Creating special devices (mknod) 
remotely may require specifying a mkdev function to Samba if you are not using 
Samba 3.0.6 or later.  For more information on these see the manual pages
("man smb.conf") on the Samba server system.  Note that the cifs vfs,
unlike the smbfs vfs, does not read the smb.conf on the client system 
(the few optional settings are passed in on mount via -o parameters instead).  
Note that Samba 2.2.7 or later includes a fix that allows the CIFS VFS to delete
open files (required for strict POSIX compliance).  Windows Servers already 
supported this feature. Samba server does not allow symlinks that refer to files
outside of the share, so in Samba versions prior to 3.0.6, most symlinks to
files with absolute paths (ie beginning with slash) such as:
	 ln -s /mnt/foo bar
would be forbidden. Samba 3.0.6 server or later includes the ability to create 
such symlinks safely by converting unsafe symlinks (ie symlinks to server 
files that are outside of the share) to a samba specific format on the server
that is ignored by local server applications and non-cifs clients and that will
not be traversed by the Samba server).  This is opaque to the Linux client
application using the cifs vfs. Absolute symlinks will work to Samba 3.0.5 or
later, but only for remote clients using the CIFS Unix extensions, and will
be invisbile to Windows clients and typically will not affect local
applications running on the same server as Samba.  

Use instructions:
================
Once the CIFS VFS support is built into the kernel or installed as a module 
(cifs.o), you can use mount syntax like the following to access Samba or Windows 
servers: 

  mount -t cifs //9.53.216.11/e$ /mnt -o user=myname,pass=mypassword

Before -o the option -v may be specified to make the mount.cifs
mount helper display the mount steps more verbosely.  
After -o the following commonly used cifs vfs specific options
are supported:

  user=<username>
  pass=<password>
  domain=<domain name>
  
Other cifs mount options are described below.  Use of TCP names (in addition to
ip addresses) is available if the mount helper (mount.cifs) is installed. If
you do not trust the server to which are mounted, or if you do not have
cifs signing enabled (and the physical network is insecure), consider use
of the standard mount options "noexec" and "nosuid" to reduce the risk of 
running an altered binary on your local system (downloaded from a hostile server
or altered by a hostile router).

Although mounting using format corresponding to the CIFS URL specification is
not possible in mount.cifs yet, it is possible to use an alternate format
for the server and sharename (which is somewhat similar to NFS style mount
syntax) instead of the more widely used UNC format (i.e. \\server\share):
  mount -t cifs tcp_name_of_server:share_name /mnt -o user=myname,pass=mypasswd

When using the mount helper mount.cifs, passwords may be specified via alternate
mechanisms, instead of specifying it after -o using the normal "pass=" syntax
on the command line:
1) By including it in a credential file. Specify credentials=filename as one
of the mount options. Credential files contain two lines
        username=someuser
        password=your_password
2) By specifying the password in the PASSWD environment variable (similarly
the user name can be taken from the USER environment variable).
3) By specifying the password in a file by name via PASSWD_FILE
4) By specifying the password in a file by file descriptor via PASSWD_FD

If no password is provided, mount.cifs will prompt for password entry

Restrictions
============
Servers must support the NTLM SMB dialect (which is the most recent, supported 
by Samba and Windows NT version 4, 2000 and XP and many other SMB/CIFS servers) 
Servers must support either "pure-TCP" (port 445 TCP/IP CIFS connections) or RFC 
1001/1002 support for "Netbios-Over-TCP/IP." Neither of these is likely to be a 
problem as most servers support this.  IPv6 support is planned for the future.  

CIFS VFS Mount Options
======================
A partial list of the supported mount options follows:
  user		The user name to use when trying to establish
		the CIFS session.
  password	The user password.  If the mount helper is
		installed, the user will be prompted for password