diff options
Diffstat (limited to 'fs/cifs/TODO')
| -rw-r--r-- | fs/cifs/TODO | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/fs/cifs/TODO b/fs/cifs/TODO deleted file mode 100644 index fc34c74ec4b..00000000000 --- a/fs/cifs/TODO +++ /dev/null @@ -1,130 +0,0 @@ -Version 1.39 November 30, 2005 - -A Partial List of Missing Features -================================== - -Contributions are welcome. There are plenty of opportunities -for visible, important contributions to this module. Here -is a partial list of the known problems and missing features: - -a) Support for SecurityDescriptors(Windows/CIFS ACLs) for chmod/chgrp/chown -so that these operations can be supported to Windows servers - -b) Mapping POSIX ACLs (and eventually NFSv4 ACLs) to CIFS -SecurityDescriptors - -c) Better pam/winbind integration (e.g. to handle uid mapping -better) - -d) Kerberos/SPNEGO session setup support - (started) - -e) NTLMv2 authentication (mostly implemented) - -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 - -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. 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 -to make it to network filesystems or deviceless filesystems) - -j) 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 -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 -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 -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 -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 (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 -the CIFS statistics (started) - -s) 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) - -u) 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. - -v) 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) Add support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers) - -y) Finish testing of Windows 9x/Windows ME server support (started). - -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, 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 -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. - -Misc testing to do -================== -1) check out max path names and max path name components against various server -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. - -3) Additional performance testing and optimization using iozone and similar - -there are some easy changes that can be done to parallelize sequential writes, -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 against less common servers. More testing -against Windows 9x, Windows ME servers. |