Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

Verison 1.48

Version 1.49

------------

IPv6 support.  Enable ipv6 addresses to be passed on mount (put the ipv6

address after the "ip=" mount option, at least until mount.cifs is fixed to

handle DNS host to ipv6 name translation).  Accept override of uid or gid

on mount even when Unix Extensions are negotiated (it used to be ignored

when Unix Extensions were ignored).  This allows users to override the

default uid and gid for files when they are certain that the uids or

gids on the server do not match those of the client.  Make "sec=none"

mount override username (so that null user connection is attempted)

to match what documentation said.

Version 1.48

------------

Fix mtime bouncing around from local idea of last write times to remote time.

Fix hang (in i_size_read) when simultaneous size update of same remote file

(we had been leaving a file's mode read-only until the inode were reloaded).

Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute

when archive dos attribute not set and we are changing mode back to writeable

on server which does not support the Unix Extensions).

on server which does not support the Unix Extensions).  Remove read only dos

attribute on chmod when adding any write permission (ie on any of

user/group/other (not all of user/group/other ie  0222) when

mounted to windows.  Add support for POSIX MkDir (slight performance

enhancement and eliminates the network race between the mkdir and set 

path info of the mode).

Version 1.47

------------

		mount.	

  domain	Set the SMB/CIFS workgroup name prepended to the

		username during CIFS session establishment

  uid		If CIFS Unix extensions are not supported by the server

		this overrides the default uid for inodes. For mounts to

		servers which do support the CIFS Unix extensions, such

		as a properly configured Samba server, the server provides

		the uid, gid and mode.  For servers which do not support

		the Unix extensions, the default uid (and gid) returned on

		lookup of existing files is the uid (gid) of the person

  uid		Set the default uid for inodes. For mounts to servers

		which do support the CIFS Unix extensions, such as a

		properly configured Samba server, the server provides

		the uid, gid and mode so this parameter should  not be

		specified unless the server and clients uid and gid

		numbering differ.  If the server and client are in the

		same domain (e.g. running winbind or nss_ldap) and

		the server supports the Unix Extensions then the uid

		and gid can be retrieved from the server (and uid

		and gid would not have to be specifed on the mount. 

		For servers which do not support the CIFS Unix

		extensions, the default uid (and gid) returned on lookup

		of existing files will be the uid (gid) of the person

		who executed the mount (root, except when mount.cifs

		is configured setuid for user mounts) unless the "uid=" 

		(gid) mount option is specified.  For the uid (gid) of newly

		the client.  Note that the mount.cifs helper must be

		at version 1.10 or higher to support specifying the uid

		(or gid) in non-numberic form.

  gid		If CIFS Unix extensions are not supported by the server

		this overrides the default gid for inodes.

  gid		Set the default gid for inodes (similar to above).

  file_mode     If CIFS Unix extensions are not supported by the server

		this overrides the default mode for file inodes.

  dir_mode      If CIFS Unix extensions are not supported by the server 

	-V      print mount.cifs version

	-?      display simple usage information

With recent 2.6 kernel versions of modutils, the version of the cifs kernel

With most 2.6 kernel versions of modutils, the version of the cifs kernel

module can be displayed via modinfo.

Misc /proc/fs/cifs Flags and Debug Info

			must use plaintext passwords			0x20020

			(reserved for future packet encryption)		0x00040

cifsFYI			If set to one, additional debug information is

			logged to the system error log. (default 0)

cifsFYI			If set to non-zero value, additional debug information

			will be logged to the system error log.  This field

			contains three flags controlling different classes of

			debugging entries.  The maximum value it can be set

			to is 7 which enables all debugging points (default 0).

			Some debugging statements are not compiled into the

			cifs kernel unless CONFIG_CIFS_DEBUG2 is enabled in the

			kernel configuration. cifsFYI may be set to one or

			nore of the following flags (7 sets them all):

			log cifs informational messages			0x01

			log return codes from cifs entry points		0x02

			log slow responses (ie which take longer than 1 second)

			  CONFIG_CIFS_STATS2 must be enabled in .config	0x04

traceSMB		If set to one, debug information is logged to the

			system error log with the start of smb requests

			and responses (default 0)

Version 1.39 November 30, 2005

Version 1.49 April 26, 2007

A Partial List of Missing Features

==================================

d) Kerberos/SPNEGO session setup support - (started)

e) NTLMv2 authentication (mostly implemented - double check

e) More testing of NTLMv2 authentication (mostly implemented - double check

that NTLMv2 signing works, also need to cleanup now unneeded SessSetup code in

fs/cifs/connect.c)

and raw NTLMSSP already. This is important when enabling

extended security and mounting to Windows 2003 Servers

f) Directory entry caching relies on a 1 second timer, rather than 

g) Directory entry caching relies on a 1 second timer, rather than 

using FindNotify or equivalent.  - (started)

g) A few byte range testcases fail due to POSIX vs. Windows/CIFS

style byte range lock differences.  Save byte range locks so

reconnect can replay them.  

h) Support unlock all (unlock 0,MAX_OFFSET)

by unlocking all known byte range locks that we locked on the file.

i) quota support (needs minor kernel change since quota calls

h) quota support (needs minor kernel change since quota calls

to make it to network filesystems or deviceless filesystems)

j) investigate sync behavior (including syncpage) and check  

i) investigate sync behavior (including syncpage) and check  

for proper behavior of intr/nointr

k) hook lower into the sockets api (as NFS/SunRPC does) to avoid the

j) hook lower into the sockets api (as NFS/SunRPC does) to avoid the

extra copy in/out of the socket buffers in some cases.

l) finish support for IPv6.  This is mostly complete but

needs a simple conversion of ipv6 to sin6_addr from the

address in string representation.

m) Better optimize open (and pathbased setfilesize) to reduce the

k) Better optimize open (and pathbased setfilesize) to reduce the

oplock breaks coming from windows srv.  Piggyback identical file

opens on top of each other by incrementing reference count rather

than resending (helps reduce server resource utilization and avoid

spurious oplock breaks).

o) Improve performance of readpages by sending more than one read

l) Improve performance of readpages by sending more than one read

at a time when 8 pages or more are requested. In conjuntion

add support for async_cifs_readpages.

p) Add support for storing symlink info to Windows servers 

m) Add support for storing symlink info to Windows servers 

in the Extended Attribute format their SFU clients would recognize.

q) Finish fcntl D_NOTIFY support so kde and gnome file list windows

n) Finish fcntl D_NOTIFY support so kde and gnome file list windows

will autorefresh (partially complete by Asser). Needs minor kernel

vfs change to support removing D_NOTIFY on a file.   

r) Add GUI tool to configure /proc/fs/cifs settings and for display of

o) Add GUI tool to configure /proc/fs/cifs settings and for display of

the CIFS statistics (started)

s) implement support for security and trusted categories of xattrs

p) implement support for security and trusted categories of xattrs

(requires minor protocol extension) to enable better support for SELINUX

t) Implement O_DIRECT flag on open (already supported on mount)

q) Implement O_DIRECT flag on open (already supported on mount)

u) Create UID mapping facility so server UIDs can be mapped on a per

r) Create UID mapping facility so server UIDs can be mapped on a per

mount or a per server basis to client UIDs or nobody if no mapping

exists.  This is helpful when Unix extensions are negotiated to

allow better permission checking when UIDs differ on the server

standard for asking the server for the corresponding name of a

particular uid.

v) Add support for CIFS Unix and also the newer POSIX extensions to the

s) Add support for CIFS Unix and also the newer POSIX extensions to the

server side for Samba 4.

w) Finish up the dos time conversion routines needed to return old server

time to the client (default time, of now or time 0 is used now for these 

very old servers)

x) In support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers) 

t) In support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers) 

need to add ability to set time to server (utimes command)

y) Finish testing of Windows 9x/Windows ME server support (started).

u) DOS attrs - returned as pseudo-xattr in Samba format (check VFAT and NTFS for this too)

v) mount check for unmatched uids

w) Add mount option for Linux extension disable per mount, and partial

disable per mount (uid off, symlink/fifo/mknod on but what about posix acls?)

KNOWN BUGS (updated February 26, 2007)

x) Fix Samba 3 server to handle Linux kernel aio so dbench with lots of 

processes can proceed better in parallel (on the server)

y) Fix Samba 3 to handle reads/writes over 127K (and remove the cifs mount

restriction of wsize max being 127K) 

KNOWN BUGS (updated April 24, 2007)

====================================

See http://bugzilla.samba.org - search on product "CifsVFS" for

current bug list.

4) More exhaustively test against less common servers.  More testing

against Windows 9x, Windows ME servers.

DOS attrs - returned as pseudo-xattr in Samba format (check VFAT and NTFS for this too)

mount check for unmatched uids - and uid override

Add mount option for Linux extension disable per mount, and partial disable per mount (uid off, symlink/fifo/mknod on but what about posix acls?) 

Free threads at umount --force that are stuck on the sesSem

#define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */

#define CIFS_MOUNT_NO_XATTR     0x10  /* if set - disable xattr support       */

#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames   */

#define CIFS_MOUNT_POSIX_PATHS	0x40 /* Negotiate posix pathnames if possible. */

#define CIFS_MOUNT_POSIX_PATHS  0x40  /* Negotiate posix pathnames if possible*/

#define CIFS_MOUNT_UNX_EMUL     0x80  /* Network compat with SFUnix emulation */

#define CIFS_MOUNT_NO_BRL       0x100 /* No sending byte range locks to srv   */

#define CIFS_MOUNT_CIFS_ACL     0x200 /* send ACL requests to non-POSIX srv   */

#define CIFS_MOUNT_OVERR_UID    0x400 /* override uid returned from server    */

#define CIFS_MOUNT_OVERR_GID    0x800 /* override gid returned from server    */

struct cifs_sb_info {

	struct cifsTconInfo *tcon;	/* primary mount */

		charlen = codepage->char2uni(from, len, &wchar_to[i]);

		if (charlen < 1) {

			cERROR(1,

			       ("cifs_strtoUCS: char2uni returned %d",

				charlen));

			       ("strtoUCS: char2uni of %d returned %d",

				(int)*from, charlen));

			/* A question mark */

			to[i] = cpu_to_le16(0x003f);

			charlen = 1;