-version 1.16 May 27, 2004
+version 1.34 April 29, 2005
A Partial List of Missing Features
==================================
a) Support for SecurityDescriptors for chmod/chgrp/chown so
these can be supported for Windows servers
-b) Better pam/winbind integration
+b) Better pam/winbind integration (e.g. to handle uid mapping
+better)
c) multi-user mounts - multiplexed sessionsetups over single vc
-(ie tcp session) - prettying up needed
+(ie tcp session) - more testing needed
d) Kerberos/SPNEGO session setup support - (started)
h) quota support
-i) support for the Linux 2.5 kernel new feature get_xattr and set_xattr
-which will allow us to expose dos attributes as well as real
-ACLs. This support has been started in the current code, but is
-ifdeffed out.
-
-k) finish writepages support (multi-page write behind for improved
+j) finish writepages support (multi-page write behind for improved
performance) and syncpage
-l) hook lower into the sockets api (as NFS/SunRPC does) to avoid the
+k) hook lower into the sockets api (as NFS/SunRPC does) to avoid the
extra copy in/out of the socket buffers in some cases.
-m) finish support for IPv6. This is mostly complete but
-needs a simple inet_pton like function to convert ipv6
-addresses in string representation.
+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.
-o) Better optimize open (and pathbased setfilesize) to reduce the
+m) 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).
-p) Improve performance of readpages by sending more than one read
-at a time when 8 pages or more are requested. Evaluate whether
-reads larger than 16K would be helpful.
+o) 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 and fifo 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
+will autorefresh (started)
-q) For support of Windows9x/98 we need to retry failed mounts
-to *SMBSERVER (default server name) with the uppercase hostname
-in the RFC1001 session_init request.
+r) Add GUI tool to configure /proc/fs/cifs settings and for display of
+the CIFS statistics (started)
-r) Add Extended Attributed support (for storing UID/GID info
-to Windows servers)
+q) implement support for security and trusted categories of xattrs
+(requires minor protocol extension) to enable better support for SELINUX
-s) Finish fcntl D_NOTIFY support so kde and gnome file list windows
-will autorefresh
+r) Implement O_DIRECT flag on open (already supported on mount)
-t) Add GUI tool to configure /proc/fs/cifs settings and for display of
-the CIFS statistics
+s) Allow remapping of last remaining character (\) to +0xF000 which
+(this character is valid for POSIX but not for Windows)
-KNOWN BUGS (updated May 27, 2004)
+t) 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
+and client. Add new protocol request to the CIFS protocol
+standard for asking the server for the corresponding name of a
+particular uid.
+
+KNOWN BUGS (updated April 29, 2005)
====================================
+See http://bugzilla.samba.org - search on product "CifsVFS" for
+current bug list.
+
1) existing symbolic links (Windows reparse points) are recognized but
can not be created remotely. They are implemented for Samba and those that
-support the CIFS Unix extensions but Samba has a bug currently handling
-symlink text beginning with slash
+support the CIFS Unix extensions, although earlier versions of Samba
+overly restrict the pathnames.
2) follow_link and readdir code does not follow dfs junctions
but recognizes them
3) create of new files to FAT partitions on Windows servers can
succeed but still return access denied (appears to be Windows
-not client problem) and has not been reproduced recently.
+server not cifs client problem) and has not been reproduced recently.
NTFS partitions do not have this problem.
-4) debug connectation lock test case 10 which fails against
+4) debug connectathon lock test case 10 which fails against
Samba (may be unmappable due to POSIX to Windows lock model
differences but worth investigating). Also debug Samba to
see why lock test case 7 takes longer to complete to Samba
than to Windows.
-5) prepare_write does not initialize pages properly when partial
-page writes begin in the middle of a page (pages can get zeroed).
-6) Write caching done incorrectly when files are only opened
-with write permission by the application.
-7) Rename of files that are hardlinked does not work correctly e.g.
- ln source target
- mv source target
-This should be no op since files are linked but in cifs it causes
-the source file to go away. This may require implementation of
-the cifs POSIX extensions (Unix Extensions version 2) for
-it to be done correctly since Samba is failing the rename,
-(rather than ignoring it) so the client not knowing they
-are linked proceeds to delete the target and then retry the
-move which succeeds this time (but the source is gone).
Misc testing to do
==================
1) check out max path names and max path name components against various server
-types. Return max path name in stat -f information
+types. Try nested symlinks (8 deep). Return max path name in stat -f information
2) Modify file portion of ltp so it can run against a mounted network
share and run it against cifs vfs.
and when signing is disabled to request larger read sizes (larger than
negotiated size) and send larger write sizes to modern servers.
-4) More exhaustively test the recently added NT4 support against various
-NT4 service pack levels.
-
+4) More exhaustively test against less common servers. More testing
+against Windows 9x, Windows ME servers.
git://git.onelab.eu / linux-2.6.git / blobdiff