diff options
Diffstat (limited to 'Documentation/filesystems/cifs/CHANGES')
| -rw-r--r-- | Documentation/filesystems/cifs/CHANGES | 1065 |
1 files changed, 1065 insertions, 0 deletions
diff --git a/Documentation/filesystems/cifs/CHANGES b/Documentation/filesystems/cifs/CHANGES new file mode 100644 index 0000000..bc0025c --- /dev/null +++ b/Documentation/filesystems/cifs/CHANGES @@ -0,0 +1,1065 @@ +Version 1.62 +------------ +Add sockopt=TCP_NODELAY mount option. EA (xattr) routines hardened +to more strictly handle corrupt frames. + +Version 1.61 +------------ +Fix append problem to Samba servers (files opened with O_APPEND could +have duplicated data). Fix oops in cifs_lookup. Workaround problem +mounting to OS/400 Netserve. Fix oops in cifs_get_tcp_session. +Disable use of server inode numbers when server only +partially supports them (e.g. for one server querying inode numbers on +FindFirst fails but QPathInfo queries works). Fix oops with dfs in +cifs_put_smb_ses. Fix mmap to work on directio mounts (needed +for OpenOffice when on forcedirectio mount e.g.) + +Version 1.60 +------------- +Fix memory leak in reconnect. Fix oops in DFS mount error path. +Set s_maxbytes to smaller (the max that vfs can handle) so that +sendfile will now work over cifs mounts again. Add noforcegid +and noforceuid mount parameters. Fix small mem leak when using +ntlmv2. Fix 2nd mount to same server but with different port to +be allowed (rather than reusing the 1st port) - only when the +user explicitly overrides the port on the 2nd mount. + +Version 1.59 +------------ +Client uses server inode numbers (which are persistent) rather than +client generated ones by default (mount option "serverino" turned +on by default if server supports it). Add forceuid and forcegid +mount options (so that when negotiating unix extensions specifying +which uid mounted does not immediately force the server's reported +uids to be overridden). Add support for scope mount parm. Improve +hard link detection to use same inode for both. Do not set +read-only dos attribute on directories (for chmod) since Windows +explorer special cases this attribute bit for directories for +a different purpose. + +Version 1.58 +------------ +Guard against buffer overruns in various UCS-2 to UTF-8 string conversions +when the UTF-8 string is composed of unusually long (more than 4 byte) converted +characters. Add support for mounting root of a share which redirects immediately +to DFS target. Convert string conversion functions from Unicode to more +accurately mark string length before allocating memory (which may help the +rare cases where a UTF-8 string is much larger than the UCS2 string that +we converted from). Fix endianness of the vcnum field used during +session setup to distinguish multiple mounts to same server from different +userids. Raw NTLMSSP fixed (it requires /proc/fs/cifs/experimental +flag to be set to 2, and mount must enable krb5 to turn on extended security). +Performance of file create to Samba improved (posix create on lookup +removes 1 of 2 network requests sent on file create) + +Version 1.57 +------------ +Improve support for multiple security contexts to the same server. We +used to use the same "vcnumber" for all connections which could cause +the server to treat subsequent connections, especially those that +are authenticated as guest, as reconnections, invalidating the earlier +user's smb session. This fix allows cifs to mount multiple times to the +same server with different userids without risking invalidating earlier +established security contexts. fsync now sends SMB Flush operation +to better ensure that we wait for server to write all of the data to +server disk (not just write it over the network). Add new mount +parameter to allow user to disable sending the (slow) SMB flush on +fsync if desired (fsync still flushes all cached write data to the server). +Posix file open support added (turned off after one attempt if server +fails to support it properly, as with Samba server versions prior to 3.3.2) +Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too +little memory for the "nativeFileSystem" field returned by the server +during mount). Endian convert inode numbers if necessary (makes it easier +to compare inode numbers on network files from big endian systems). + +Version 1.56 +------------ +Add "forcemandatorylock" mount option to allow user to use mandatory +rather than posix (advisory) byte range locks, even though server would +support posix byte range locks. Fix query of root inode when prefixpath +specified and user does not have access to query information about the +top of the share. Fix problem in 2.6.28 resolving DFS paths to +Samba servers (worked to Windows). Fix rmdir so that pending search +(readdir) requests do not get invalid results which include the now +removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable +when using DFS. Add better file create support to servers which support +the CIFS POSIX protocol extensions (this adds support for new flags +on create, and improves semantics for write of locked ranges). + +Version 1.55 +------------ +Various fixes to make delete of open files behavior more predictable +(when delete of an open file fails we mark the file as "delete-on-close" +in a way that more servers accept, but only if we can first rename the +file to a temporary name). Add experimental support for more safely +handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp +sends, and also let tcp autotune the socket send and receive buffers. +This reduces the number of EAGAIN errors returned by TCP/IP in +high stress workloads (and the number of retries on socket writes +when sending large SMBWriteX requests). Fix case in which a portion of +data can in some cases not get written to the file on the server before the +file is closed. Fix DFS parsing to properly handle path consumed field, +and to handle certain codepage conversions better. Fix mount and +umount race that can cause oops in mount or umount or reconnect. + +Version 1.54 +------------ +Fix premature write failure on congested networks (we would give up +on EAGAIN from the socket too quickly on large writes). +Cifs_mkdir and cifs_create now respect the setgid bit on parent dir. +Fix endian problems in acl (mode from/to cifs acl) on bigendian +architectures. Fix problems with preserving timestamps on copying open +files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit +on parent directory when server supports Unix Extensions but not POSIX +create. Update cifs.upcall version to handle new Kerberos sec flags +(this requires update of cifs.upcall program from Samba). Fix memory leak +on dns_upcall (resolving DFS referralls). Fix plain text password +authentication (requires setting SecurityFlags to 0x30030 to enable +lanman and plain text though). Fix writes to be at correct offset when +file is open with O_APPEND and file is on a directio (forcediretio) mount. +Fix bug in rewinding readdir directory searches. Add nodfs mount option. + +Version 1.53 +------------ +DFS support added (Microsoft Distributed File System client support needed +for referrals which enable a hierarchical name space among servers). +Disable temporary caching of mode bits to servers which do not support +storing of mode (e.g. Windows servers, when client mounts without cifsacl +mount option) and add new "dynperm" mount option to enable temporary caching +of mode (enable old behavior). Fix hang on mount caused when server crashes +tcp session during negotiate protocol. + +Version 1.52 +------------ +Fix oops on second mount to server when null auth is used. +Enable experimental Kerberos support. Return writebehind errors on flush +and sync so that events like out of disk space get reported properly on +cached files. Fix setxattr failure to certain Samba versions. Fix mount +of second share to disconnected server session (autoreconnect on this). +Add ability to modify cifs acls for handling chmod (when mounted with +cifsacl flag). Fix prefixpath path separator so we can handle mounts +with prefixpaths longer than one directory (one path component) when +mounted to Windows servers. Fix slow file open when cifsacl +enabled. Fix memory leak in FindNext when the SMB call returns -EBADF. + + +Version 1.51 +------------ +Fix memory leak in statfs when mounted to very old servers (e.g. +Windows 9x). Add new feature "POSIX open" which allows servers +which support the current POSIX Extensions to provide better semantics +(e.g. delete for open files opened with posix open). Take into +account umask on posix mkdir not just older style mkdir. Add +ability to mount to IPC$ share (which allows CIFS named pipes to be +opened, read and written as if they were files). When 1st tree +connect fails (e.g. due to signing negotiation failure) fix +leak that causes cifsd not to stop and rmmod to fail to cleanup +cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on +bigendian architectures. Fix possible memory corruption when +EAGAIN returned on kern_recvmsg. Return better error if server +requires packet signing but client has disabled it. When mounted +with cifsacl mount option - mode bits are approximated based +on the contents of the ACL of the file or directory. When cifs +mount helper is missing convert make sure that UNC name +has backslash (not forward slash) between ip address of server +and the share name. + +Version 1.50 +------------ +Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is +done with "serverino" mount option). Add support for POSIX Unlink +(helps with certain sharing violation cases when server such as +Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix" +mount option to allow disabling the CIFS Unix Extensions for just +that mount. Fix hang on spinlock in find_writable_file (race when +reopening file after session crash). Byte range unlock request to +windows server could unlock more bytes (on server copy of file) +than intended if start of unlock request is well before start of +a previous byte range lock that we issued. + +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. Support for very large reads, over 127K, +available to some newer servers (such as Samba 3.0.26 and later but +note that it also requires setting CIFSMaxBufSize at module install +time to a larger value which may hurt performance in some cases). +Make sign option force signing (or fail if server does not support it). + +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 +on smp system corrupts sequence number. Do not reread unnecessarily partial page +(which we are about to overwrite anyway) when writing out file opened rw. +When DOS attribute of file on non-Unix server's file changes on the server side +from read-only back to read-write, reflect this change in default file mode +(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). 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 +------------ +Fix oops in list_del during mount caused by unaligned string. +Fix file corruption which could occur on some large file +copies caused by writepages page i/o completion bug. +Seek to SEEK_END forces check for update of file size for non-cached +files. Allow file size to be updated on remote extend of locally open, +non-cached file. Fix reconnect to newer Samba servers (or other servers +which support the CIFS Unix/POSIX extensions) so that we again tell the +server the Unix/POSIX cifs capabilities which we support (SetFSInfo). +Add experimental support for new POSIX Open/Mkdir (which returns +stat information on the open, and allows setting the mode). + +Version 1.46 +------------ +Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps. +Allow null user to be specified on mount ("username="). Do not return +EINVAL on readdir when filldir fails due to overwritten blocksize +(fixes FC problem). Return error in rename 2nd attempt retry (ie report +if rename by handle also fails, after rename by path fails, we were +not reporting whether the retry worked or not). Fix NTLMv2 to +work to Windows servers (mount with option "sec=ntlmv2"). + +Version 1.45 +------------ +Do not time out lockw calls when using posix extensions. Do not +time out requests if server still responding reasonably fast +on requests on other threads. Improve POSIX locking emulation, +(lock cancel now works, and unlock of merged range works even +to Windows servers now). Fix oops on mount to lanman servers +(win9x, os/2 etc.) when null password. Do not send listxattr +(SMB to query all EAs) if nouser_xattr specified. Fix SE Linux +problem (instantiate inodes/dentries in right order for readdir). + +Version 1.44 +------------ +Rewritten sessionsetup support, including support for legacy SMB +session setup needed for OS/2 and older servers such as Windows 95 and 98. +Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst +so we can do search (ls etc.) to OS/2. Do not send NTCreateX +or recent levels of FindFirst unless server says it supports NT SMBs +(instead use legacy equivalents from LANMAN dialect). Fix to allow +NTLMv2 authentication support (now can use stronger password hashing +on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004). +Allow override of global cifs security flags on mount via "sec=" option(s). + +Version 1.43 +------------ +POSIX locking to servers which support CIFS POSIX Extensions +(disabled by default controlled by proc/fs/cifs/Experimental). +Handle conversion of long share names (especially Asian languages) +to Unicode during mount. Fix memory leak in sess struct on reconnect. +Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on +cifs open which helps rare case when setpathinfo fails or server does +not support it. + +Version 1.42 +------------ +Fix slow oplock break when mounted to different servers at the same time and +the tids match and we try to find matching fid on wrong server. Fix read +looping when signing required by server (2.6.16 kernel only). Fix readdir +vs. rename race which could cause each to hang. Return . and .. even +if server does not. Allow searches to skip first three entries and +begin at any location. Fix oops in find_writeable_file. + +Version 1.41 +------------ +Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can +configure stronger authentication. Fix sfu symlinks so they can +be followed (not just recognized). Fix wraparound of bcc on +read responses when buffer size over 64K and also fix wrap of +max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in +cifs_user_read and cifs_readpages (when EAGAIN on send of smb +on socket is returned over and over). Add POSIX (advisory) byte range +locking support (requires server with newest CIFS UNIX Extensions +to the protocol implemented). Slow down negprot slightly in port 139 +RFC1001 case to give session_init time on buggy servers. + +Version 1.40 +------------ +Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance +of readpages by eliminating one extra memcpy. Allow update of file size +from remote server even if file is open for write as long as mount is +directio. Recognize share mode security and send NTLM encrypted password +on tree connect if share mode negotiated. + +Version 1.39 +------------ +Defer close of a file handle slightly if pending writes depend on that handle +(this reduces the EBADF bad file handle errors that can be logged under heavy +stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2 +Fix SFU style symlinks and mknod needed for servers which do not support the +CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative +dentries so files that the client sees as deleted but that later get created +on the server will be recognized. Add client side permission check on setattr. +Timeout stuck requests better (where server has never responded or sent corrupt +responses) + +Version 1.38 +------------ +Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket) +to be smaller at first (but increasing) so large write performance performance +over GigE is better. Do not hang thread on illegal byte range lock response +from Windows (Windows can send an RFC1001 size which does not match smb size) by +allowing an SMBs TCP length to be up to a few bytes longer than it should be. +wsize and rsize can now be larger than negotiated buffer size if server +supports large readx/writex, even when directio mount flag not specified. +Write size will in many cases now be 16K instead of 4K which greatly helps +file copy performance on lightly loaded networks. Fix oops in dnotify +when experimental config flag enabled. Make cifsFYI more granular. + +Version 1.37 +------------ +Fix readdir caching when unlink removes file in current search buffer, +and this is followed by a rewind search to just before the deleted entry. +Do not attempt to set ctime unless atime and/or mtime change requested +(most servers throw it away anyway). Fix length check of received smbs +to be more accurate. Fix big endian problem with mapchars mount option, +and with a field returned by statfs. + +Version 1.36 +------------ +Add support for mounting to older pre-CIFS servers such as Windows9x and ME. +For these older servers, add option for passing netbios name of server in +on mount (servernetbiosname). Add suspend support for power management, to +avoid cifsd thread preventing software suspend from working. +Add mount option for disabling the default behavior of sending byte range lock +requests to the server (necessary for certain applications which break with +mandatory lock behavior such as Evolution), and also mount option for +requesting case insensitive matching for path based requests (requesting +case sensitive is the default). + +Version 1.35 +------------ +Add writepage performance improvements. Fix path name conversions +for long filenames on mounts which were done with "mapchars" mount option +specified. Ensure multiplex ids do not collide. Fix case in which +rmmod can oops if done soon after last unmount. Fix truncated +search (readdir) output when resume filename was a long filename. +Fix filename conversion when mapchars mount option was specified and +filename was a long filename. + +Version 1.34 +------------ +Fix error mapping of the TOO_MANY_LINKS (hardlinks) case. +Do not oops if root user kills cifs oplock kernel thread or +kills the cifsd thread (NB: killing the cifs kernel threads is not +recommended, unmount and rmmod cifs will kill them when they are +no longer needed). Fix readdir to ASCII servers (ie older servers +which do not support Unicode) and also require asterisk. +Fix out of memory case in which data could be written one page +off in the page cache. + +Version 1.33 +------------ +Fix caching problem, in which readdir of directory containing a file +which was cached could cause the file's time stamp to be updated +without invalidating the readahead data (so we could get stale +file data on the client for that file even as the server copy changed). +Cleanup response processing so cifsd can not loop when abnormally +terminated. + + +Version 1.32 +------------ +Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one +transact response for an SMB request and search entry split across two frames. +Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server) +as new protocol extensions. Do not send Get/Set calls for POSIX ACLs +unless server explicitly claims to support them in CIFS Unix extensions +POSIX ACL capability bit. Fix packet signing when multiuser mounting with +different users from the same client to the same server. Fix oops in +cifs_close. Add mount option for remapping reserved characters in +filenames (also allow recognizing files with created by SFU which have any +of these seven reserved characters, except backslash, to be recognized). +Fix invalid transact2 message (we were sometimes trying to interpret +oplock breaks as SMB responses). Add ioctl for checking that the +current uid matches the uid of the mounter (needed by umount.cifs). +Reduce the number of large buffer allocations in cifs response processing +(significantly reduces memory pressure under heavy stress with multiple +processes accessing the same server at the same time). + +Version 1.31 +------------ +Fix updates of DOS attributes and time fields so that files on NT4 servers +do not get marked delete on close. Display sizes of cifs buffer pools in +cifs stats. Fix oops in unmount when cifsd thread being killed by +shutdown. Add generic readv/writev and aio support. Report inode numbers +consistently in readdir and lookup (when serverino mount option is +specified use the inode number that the server reports - for both lookup +and readdir, otherwise by default the locally generated inode number is used +for inodes created in either path since servers are not always able to +provide unique inode numbers when exporting multiple volumes from under one +sharename). + +Version 1.30 +------------ +Allow new nouser_xattr mount parm to disable xattr support for user namespace. +Do not flag user_xattr mount parm in dmesg. Retry failures setting file time +(mostly affects NT4 servers) by retry with handle based network operation. +Add new POSIX Query FS Info for returning statfs info more accurately. +Handle passwords with multiple commas in them. + +Version 1.29 +------------ +Fix default mode in sysfs of cifs module parms. Remove old readdir routine. +Fix capabilities flags for large readx so as to allow reads larger than 64K. + +Version 1.28 +------------ +Add module init parm for large SMB buffer size (to allow it to be changed +from its default of 16K) which is especially useful for large file copy +when mounting with the directio mount option. Fix oops after +returning from mount when experimental ExtendedSecurity enabled and +SpnegoNegotiated returning invalid error. Fix case to retry better when +peek returns from 1 to 3 bytes on socket which should have more data. +Fixed path based calls (such as cifs lookup) to handle path names +longer than 530 (now can handle PATH_MAX). Fix pass through authentication +from Samba server to DC (Samba required dummy LM password). + +Version 1.27 +------------ +Turn off DNOTIFY (directory change notification support) by default +(unless built with the experimental flag) to fix hang with KDE +file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event +waiting on an SMB response) in SendReceive when session dies but +reconnects quickly from another task. Add module init parms for +minimum number of large and small network buffers in the buffer pools, +and for the maximum number of simultaneous requests. + +Version 1.26 +------------ +Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later +and other POSIX CIFS compliant servers. Fix error mapping for getfacl +to EOPNOTSUPP when server does not support posix acls on the wire. Fix +improperly zeroed buffer in CIFS Unix extensions set times call. + +Version 1.25 +------------ +Fix internationalization problem in cifs readdir with filenames that map to +longer UTF-8 strings than the string on the wire was in Unicode. Add workaround +for readdir to netapp servers. Fix search rewind (seek into readdir to return +non-consecutive entries). Do not do readdir when server negotiates +buffer size to small to fit filename. Add support for reading POSIX ACLs from +the server (add also acl and noacl mount options). + +Version 1.24 +------------ +Optionally allow using server side inode numbers, rather than client generated +ones by specifying mount option "serverino" - this is required for some apps +to work which double check hardlinked files and have persistent inode numbers. + +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. + +Version 0.79 +------------ +Fix mount options for ro (readonly), uid, gid and file and directory mode. + +Version 0.78 +------------ +Fix errors displayed on failed mounts to be more understandable. +Fixed various incorrect or misleading smb to posix error code mappings. + +Version 0.77 +------------ +Fix display of NTFS DFS junctions to display as symlinks. +They are the network equivalent. Fix oops in +cifs_partialpagewrite caused by missing spinlock protection +of openfile linked list. Allow writebehind caching errors to +be returned to the application at file close. + +Version 0.76 +------------ +Clean up options displayed in /proc/mounts by show_options to +be more consistent with other filesystems. + +Version 0.75 +------------ +Fix delete of readonly file to Windows servers. Reflect +presence or absence of read only dos attribute in mode +bits for servers that do not support CIFS Unix extensions. +Fix shortened results on readdir of large directories to +servers supporting CIFS Unix extensions (caused by +incorrect resume key). + +Version 0.74 +------------ +Fix truncate bug (set file size) that could cause hangs e.g. running fsx + +Version 0.73 +------------ +unload nls if mount fails. + +Version 0.72 +------------ +Add resume key support to search (readdir) code to workaround +Windows bug. Add /proc/fs/cifs/LookupCacheEnable which +allows disabling caching of attribute information for +lookups. + +Version 0.71 +------------ +Add more oplock handling (distributed caching code). Remove +dead code. Remove excessive stack space utilization from +symlink routines. + +Version 0.70 +------------ +Fix oops in get dfs referral (triggered when null path sent in to +mount). Add support for overriding rsize at mount time. + +Version 0.69 +------------ +Fix buffer overrun in readdir which caused intermittent kernel oopses. +Fix writepage code to release kmap on write data. Allow "-ip=" new +mount option to be passed in on parameter distinct from the first part +(server name portion of) the UNC name. Allow override of the +tcp port of the target server via new mount option "-port=" + +Version 0.68 +------------ +Fix search handle leak on rewind. Fix setuid and gid so that they are +reflected in the local inode immediately. Cleanup of whitespace +to make 2.4 and 2.5 versions more consistent. + + +Version 0.67 +------------ +Fix signal sending so that captive thread (cifsd) exits on umount +(which was causing the warning in kmem_cache_free of the request buffers +at rmmod time). This had broken as a sideeffect of the recent global +kernel change to daemonize. Fix memory leak in readdir code which +showed up in "ls -R" (and applications that did search rewinding). + +Version 0.66 +------------ +Reconnect tids and fids after session reconnection (still do not +reconnect byte range locks though). Fix problem caching +lookup information for directory inodes, improving performance, +especially in deep directory trees. Fix various build warnings. + +Version 0.65 +------------ +Finish fixes to commit write for caching/readahead consistency. fsx +now works to Samba servers. Fix oops caused when readahead +was interrupted by a signal. + +Version 0.64 +------------ +Fix data corruption (in partial page after truncate) that caused fsx to +fail to Windows servers. Cleaned up some extraneous error logging in +common error paths. Add generic sendfile support. + +Version 0.63 +------------ +Fix memory leak in AllocMidQEntry. +Finish reconnection logic, so connection with server can be dropped +(or server rebooted) and the cifs client will reconnect. + +Version 0.62 +------------ +Fix temporary socket leak when bad userid or password specified +(or other SMBSessSetup failure). Increase maximum buffer size to slightly +over 16K to allow negotiation of up to Samba and Windows server default read +sizes. Add support for readpages + +Version 0.61 +------------ +Fix oops when username not passed in on mount. Extensive fixes and improvements +to error logging (strip redundant newlines, change debug macros to ensure newline +passed in and to be more consistent). Fix writepage wrong file handle problem, +a readonly file handle could be incorrectly used to attempt to write out +file updates through the page cache to multiply open files. This could cause +the iozone benchmark to fail on the fwrite test. Fix bug mounting two different +shares to the same Windows server when using different usernames +(doing this to Samba servers worked but Windows was rejecting it) - now it is +possible to use different userids when connecting to the same server from a +Linux client. Fix oops when treeDisconnect called during unmount on +previously freed socket. + +Version 0.60 +------------ +Fix oops in readpages caused by not setting address space operations in inode in +rare code path. + +Version 0.59 +------------ +Includes support for deleting of open files and renaming over existing files (per POSIX +requirement). Add readlink support for Windows junction points (directory symlinks). + +Version 0.58 +------------ +Changed read and write to go through pagecache. Added additional address space operations. +Memory mapped operations now working. + +Version 0.57 +------------ +Added writepage code for additional memory mapping support. Fixed leak in xids causing +the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on +every stat call. Additional formatting cleanup. + +Version 0.56 +------------ +Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup. + +Version 0.55 +------------ +Fixes from Zwane Mwaikambo for adding missing return code checking in a few places. +Also included a modified version of his fix to protect global list manipulation of +the smb session and tree connection and mid related global variables. + +Version 0.54 +------------ +Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre +changes to superblock layout. Remove wasteful allocation of smb buffers (now the send +buffer is reused for responses). Add more oplock handling. Additional minor cleanup. + +Version 0.53 +------------ +More stylistic updates to better match kernel style. Add additional statistics +for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2 +and CIFS Packet Signing enablement. + +Version 0.52 +------------ +Replace call to sleep_on with safer wait_on_event. +Make stylistic changes to better match kernel style recommendations. +Remove most typedef usage (except for the PDUs themselves). + +Version 0.51 +------------ +Update mount so the -unc mount option is no longer required (the ip address can be specified +in a UNC style device name. Implementation of readpage/writepage started. + +Version 0.50 +------------ +Fix intermittent problem with incorrect smb header checking on badly +fragmented tcp responses + +Version 0.49 +------------ +Fixes to setting of allocation size and file size. + +Version 0.48 +------------ +Various 2.5.38 fixes. Now works on 2.5.38 + +Version 0.47 +------------ +Prepare for 2.5 kernel merge. Remove ifdefs. + +Version 0.46 +------------ +Socket buffer management fixes. Fix dual free. + +Version 0.45 +------------ +Various big endian fixes for hardlinks and symlinks and also for dfs. + +Version 0.44 +------------ +Various big endian fixes for servers with Unix extensions such as Samba + +Version 0.43 +------------ +Various FindNext fixes for incorrect filenames on large directory searches on big endian +clients. basic posix file i/o tests now work on big endian machines, not just le + +Version 0.42 +------------ +SessionSetup and NegotiateProtocol now work from Big Endian machines. +Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older +versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7). + +Version 0.41 +------------ +Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked +files now return the correct number of links on fstat as they are repeatedly linked and unlinked. + +Version 0.40 +------------ +Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate +session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP. +Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs +(which is the mechanism preferred by Windows 2000 server in the absence of Kerberos). + +Version 0.38 +------------ +Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable +it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU). + +Version 0.37 +------------ +Rewrote much of connection and mount/unmount logic to handle bugs with +multiple uses to same share, multiple users to same server etc. + +Version 0.36 +------------ +Fixed major problem with dentry corruption (missing call to dput) + +Version 0.35 +------------ +Rewrite of readdir code to fix bug. Various fixes for bigendian machines. +Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs +although corresponding function not fully implemented in the vfs yet + +Version 0.34 +------------ +Fixed dentry caching bug, misc. cleanup + +Version 0.33 +------------ +Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build +on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels. +Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added. + +Version 0.32 +------------ +Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented +and tested against Samba 2.2.5 + + +Version 0.31 +------------ +1) Fixed lockrange to be correct (it was one byte too short) + +2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly +show range as locked when there is a conflict with an existing lock. + +3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories +in most cases. Eventually will offer optional ability to query server for the correct perms. + +3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded +but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb +session) + +4) Fixed error logging of valid mount options + +5) Removed logging of password field. + +6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c +and cleaned them up and made them more consistent with other cifs functions. + +7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways +(with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed, +nor is the symlink support using the Unix extensions + +8) Started adding the readlink and follow_link code + +Version 0.3 +----------- +Initial drop + |
