-version 1.32 April 3, 2005
+Version 1.53 May 20, 2008
A Partial List of Missing Features
==================================
for visible, important contributions to this module. Here
is a partial list of the known problems and missing features:
-a) Support for SecurityDescriptors for chmod/chgrp/chown so
-these can be supported for Windows servers
+a) Support for SecurityDescriptors(Windows/CIFS ACLs) for chmod/chgrp/chown
+so that these operations can be supported to Windows servers
-b) Better pam/winbind integration (e.g. to handle uid mapping
-better)
-
-c) multi-user mounts - multiplexed sessionsetups over single vc
-(ie tcp session) - more testing needed
+b) Mapping POSIX ACLs (and eventually NFSv4 ACLs) to CIFS
+SecurityDescriptors
-d) Kerberos/SPNEGO session setup support - (started)
+c) Better pam/winbind integration (e.g. to handle uid mapping
+better)
-e) NTLMv2 authentication (mostly implemented)
+d) Cleanup now unneeded SessSetup code in
+fs/cifs/connect.c and add back in NTLMSSP code if any servers
+need it
-f) MD5-HMAC signing SMB PDUs when SPNEGO style SessionSetup
-used (Kerberos or NTLMSSP). Signing alreadyimplemented for NTLM
-and raw NTLMSSP already. This is important when enabling
-extended security and mounting to Windows 2003 Servers
+e) fix NTLMv2 signing when two mounts with different users to same
+server.
f) 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
+g) quota support (needs minor kernel change since quota calls
+to make it to network filesystems or deviceless filesystems)
-h) quota support
+h) investigate sync behavior (including syncpage) and check
+for proper behavior of intr/nointr
-j) finish writepages support (multi-page write behind for improved
-performance) and syncpage
+i) improve support for very old servers (OS/2 and Win9x for example)
+Including support for changing the time remotely (utimes command).
-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 and fifo 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
-will autorefresh (started)
+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)
-q) 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
-r) Implement O_DIRECT flag on open (already supported on mount)
+q) Implement O_DIRECT flag on open (already supported on mount)
+
+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
+and client. Add new protocol request to the CIFS protocol
+standard for asking the server for the corresponding name of a
+particular uid.
+
+s) Add support for CIFS Unix and also the newer POSIX extensions to the
+server side for Samba 4.
+
+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)
-KNOWN BUGS (updated April 3, 2005)
+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 support for new vfs entry points for setlease and fallocate
+
+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.
succeed but still return access denied (appears to be Windows
server not cifs client problem) and has not been reproduced recently.
NTFS partitions do not have this problem.
-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.
+4) Unix/POSIX capabilities are reset after reconnection, and affect
+a few fields in the tree connection but we do do not know which
+superblocks to apply these changes to. We should probably walk
+the list of superblocks to set these. Also need to check the
+flags on the second mount to the same share, and see if we
+can do the same trick that NFS does to remount duplicate shares.
Misc testing to do
==================
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.
+share and run it against cifs vfs in automated fashion.
3) Additional performance testing and optimization using iozone and similar -
there are some easy changes that can be done to parallelize sequential writes,
4) More exhaustively test against less common servers. More testing
against Windows 9x, Windows ME servers.
+
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff