changes

Linux内核自带的cifs模块

Version 1.23
------------
Multiple bigendian fixes. On little endian systems (for reconnect after
network failure) fix tcp session reconnect code so we do not try first
to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
as directories rather than symlinks because we can do follow link on them.

Version 1.22
------------
Add config option to enable XATTR (extended attribute) support, mapping
xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
minor fixes pointed out by the Stanford SWAT checker (mostly missing
or out of order NULL pointer checks in little used error paths).

Version 1.21
------------
Add new mount parm to control whether mode check (generic_permission) is done
on the client.  If Unix extensions are enabled and the uids on the client
and server do not match, client permission checks are meaningless on
server uids that do not exist on the client (this does not affect the
normal ACL check which occurs on the server).  Fix default uid
on mknod to match create and mkdir. Add optional mount parm to allow
override of the default uid behavior (in which the server sets the uid
and gid of newly created files). Normally for network filesystem mounts
user want the server to set the uid/gid on newly created files (rather than 
using uid of the client processes you would in a local filesystem).

Version 1.20
------------
Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
info into /proc/fs/cifs/DebugData.  Fix oops in rare oops in readdir 
(in build_wildcard_path_from_dentry).  Fix mknod to pass type field
(block/char/fifo) properly.  Remove spurious mount warning log entry when
credentials passed as mount argument. Set major/minor device number in
inode for block and char devices when unix extensions enabled.

Version 1.19
------------
Fix /proc/fs/cifs/Stats and DebugData display to handle larger
amounts of return data. Properly limit requests to MAX_REQ (50
is the usual maximum active multiplex SMB/CIFS requests per server).
Do not kill cifsd (and thus hurt the other SMB session) when more than one
session to the same server (but with different userids) exists and one
of the two user's smb sessions is being removed while leaving the other.
Do not loop reconnecting in cifsd demultiplex thread when admin
kills the thread without going through unmount.

Version 1.18
------------
Do not rename hardlinked files (since that should be a noop). Flush
cached write behind data when reopening a file after session abend,
except when already in write. Grab per socket sem during reconnect 
to avoid oops in sendmsg if overlapping with reconnect. Do not
reset cached inode file size on readdir for files open for write on 
client.


Version 1.17
------------
Update number of blocks in file so du command is happier (in Linux a fake
blocksize of 512 is required for calculating number of blocks in inode).
Fix prepare write of partial pages to read in data from server if possible.
Fix race on tcpStatus field between unmount and reconnection code, causing
cifsd process sometimes to hang around forever. Improve out of memory
checks in cifs_filldir

Version 1.16
------------
Fix incorrect file size in file handle based setattr on big endian hardware.
Fix oops in build_path_from_dentry when out of memory.  Add checks for invalid
and closing file structs in writepage/partialpagewrite.  Add statistics
for each mounted share (new menuconfig option). Fix endianness problem in
volume information displayed in /proc/fs/cifs/DebugData (only affects
affects big endian architectures). Prevent renames while constructing
path names for open, mkdir and rmdir.

Version 1.15
------------
Change to mempools for alloc smb request buffers and multiplex structs
to better handle low memory problems (and potential deadlocks).

Version 1.14
------------
Fix incomplete listings of large directories on Samba servers when Unix
extensions enabled.  Fix oops when smb_buffer can not be allocated. Fix
rename deadlock when writing out dirty pages at same time.

Version 1.13
------------
Fix open of files in which O_CREATE can cause the mode to change in
some cases. Fix case in which retry of write overlaps file close.
Fix PPC64 build error.  Reduce excessive stack usage in smb password
hashing. Fix overwrite of Linux user's view of file mode to Windows servers.

Version 1.12
------------
Fixes for large file copy, signal handling, socket retry, buffer
allocation and low memory situations.

Version 1.11
------------
Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
also now allowing support for specifying client netbiosname.  NT4 support added.

Version 1.10
------------
Fix reconnection (and certain failed mounts) to properly wake up the
blocked users thread so it does not seem hung (in some cases was blocked
until the cifs receive timeout expired). Fix spurious error logging
to kernel log when application with open network files killed. 

Version 1.09
------------
Fix /proc/fs module unload warning message (that could be logged
to the kernel log). Fix intermittent failure in connectathon
test7 (hardlink count not immediately refreshed in case in which
inode metadata can be incorrectly kept cached when time near zero)

Version 1.08
------------
Allow file_mode and dir_mode (specified at mount time) to be enforced
locally (the server already enforced its own ACLs too) for servers
that do not report the correct mode (do not support the 
CIFS Unix Extensions).

Version 1.07
------------
Fix some small memory leaks in some unmount error paths. Fix major leak
of cache pages in readpages causing multiple read oriented stress
testcases (including fsx, and even large file copy) to fail over time. 

Version 1.06
------------
Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
This allows files that differ only in case and improves performance of file
creation and file open to such servers.  Fix semaphore conflict which causes 
slow delete of open file to Samba (which unfortunately can cause an oplock
break to self while vfs_unlink held i_sem) which can hang for 20 seconds.

Version 1.05
------------
fixes to cifs_readpages for fsx test case

Version 1.04
------------
Fix caching data integrity bug when extending file size especially when no
oplock on file.  Fix spurious logging of valid already parsed mount options
that are parsed outside of the cifs vfs such as nosuid.


Version 1.03
------------
Connect to server when port number override not specified, and tcp port
unitialized.  Reset search to restart at correct file when kernel routine
filldir returns error during large directory searches (readdir). 

Version 1.02
------------
Fix caching problem when files opened by multiple clients in which 
page cache could contain stale data, and write through did
not occur often enough while file was still open when read ahead
(read oplock) not allowed.  Treat "sep=" when first mount option
as an override of comma as the default separator between mount
options. 

Version 1.01
------------
Allow passwords longer than 16 bytes. Allow null password string.

Version 1.00
------------
Gracefully clean up failed mounts when attempting to mount to servers such as
Windows 98 that terminate tcp sessions during protocol negotiation.  Handle
embedded commas in mount parsing of passwords.

Version 0.99
------------
Invalidate local inode cached pages on oplock break and when last file
instance is closed so that the client does not continue using stale local
copy rather than later modified server copy of file.  Do not reconnect
when server drops the tcp session prematurely before negotiate
protocol response.  Fix oops in reopen_file when dentry freed.  Allow
the support for CIFS Unix Extensions to be disabled via proc interface.

Version 0.98
------------
Fix hang in commit_write during reconnection of open files under heavy load.
Fix unload_nls oops in a mount failure path. Serialize writes to same socket
which also fixes any possible races when cifs signatures are enabled in SMBs
being sent out of signature sequence number order.    

Version 0.97
------------
Fix byte range locking bug (endian problem) causing bad offset and
length.

Version 0.96
------------
Fix oops (in send_sig) caused by CIFS unmount code trying to
wake up the demultiplex thread after it had exited. Do not log
error on harmless oplock release of closed handle.

Version 0.95
------------
Fix unsafe global variable usage and password hash failure on gcc 3.3.1
Fix problem reconnecting secondary mounts to same server after session 
failure.  Fix invalid dentry - race in mkdir when directory gets created
by another client between the lookup and mkdir.
 
Version 0.94
------------
Fix to list processing in reopen_files. Fix reconnection when server hung
but tcpip session still alive.  Set proper timeout on socket read.

Version 0.93
------------
Add missing mount options including iocharset.  SMP fixes in write and open. 
Fix errors in reconnecting after TCP session failure.  Fix module unloading
of default nls codepage

Version 0.92
------------
Active smb transactions should never go negative (fix double FreeXid). Fix
list processing in file routines. Check return code on kmalloc in open.
Fix spinlock usage for SMP.

Version 0.91
------------
Fix oops in reopen_files when invalid dentry. drop dentry on server rename 
and on revalidate errors. Fix cases where pid is now tgid.  Fix return code
on create hard link when server does not support them. 

Version 0.90
------------
Fix scheduling while atomic error in getting inode info on newly created file. 
Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.

Version 0.89
------------
Fix oops on write to dead tcp session. Remove error log write for case when file open
O_CREAT but not O_EXCL

Version 0.88
------------
Fix non-POSIX behavior on rename of open file and delete of open file by taking 
advantage of trans2 SetFileInfo rename facility if available on target server.
Retry on ENOSPC and EAGAIN socket errors.

Version 0.87
------------
Fix oops on big endian readdir.  Set blksize to be even power of two (2**blkbits) to fix
allocation size miscalculation. After oplock token lost do not read through
cache. 

Version 0.86
------------
Fix oops on empty file readahead.  Fix for file size handling for locally cached files.

Version 0.85
------------
Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
during auto reconnection to server after server recovered from failure.

Version 0.84
------------
Finish support for Linux 2.5 open/create changes, which removes the
redundant NTCreate/QPathInfo/close that was sent during file create.
Enable oplock by default. Enable packet signing by default (needed to 
access many recent Windows servers)

Version 0.83
------------
Fix oops when mounting to long server names caused by inverted parms to kmalloc.
Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
we will choose a cifs user session (smb uid) that better matches the local
uid if a) the mount uid does not match the current uid and b) we have another
session to the same server (ip address) for a different mount which
matches the current local uid.

Version 0.82
------------
Add support for mknod of block or character devices.  Fix oplock
code (distributed caching) to properly send response to oplock
break from server.

Version 0.81
------------
Finish up CIFS packet digital signing for the default
NTLM security case. This should help Windows 2003
network interoperability since it is common for
packet signing to be required now. Fix statfs (stat -f)
which recently started returning errors due to 
invalid value (-1 instead of 0) being set in the
struct kstatfs f_ffiles field.

Version 0.80
-----------
Fix oops on stopping oplock thread when removing cifs when
built as module.