diff options
Diffstat (limited to 'Documentation/filesystems')
23 files changed, 2247 insertions, 92 deletions
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt index b349d57b76e..9dae5940743 100644 --- a/Documentation/filesystems/btrfs.txt +++ b/Documentation/filesystems/btrfs.txt @@ -87,7 +87,7 @@ Unless otherwise specified, all options default to off. device=<devicepath> Specify a device during mount so that ioctls on the control device - can be avoided. Especialy useful when trying to mount a multi-device + can be avoided. Especially useful when trying to mount a multi-device setup as root. May be specified multiple times for multiple devices. discard diff --git a/Documentation/filesystems/caching/backend-api.txt b/Documentation/filesystems/caching/backend-api.txt index d78bab9622c..277d1e81067 100644 --- a/Documentation/filesystems/caching/backend-api.txt +++ b/Documentation/filesystems/caching/backend-api.txt @@ -299,6 +299,15 @@ performed on the denizens of the cache. These are held in a structure of type: enough space in the cache to permit this. + (*) Check coherency state of an object [mandatory]: + + int (*check_consistency)(struct fscache_object *object) + + This method is called to have the cache check the saved auxiliary data of + the object against the netfs's idea of the state. 0 should be returned + if they're consistent and -ESTALE otherwise. -ENOMEM and -ERESTARTSYS + may also be returned. + (*) Update object [mandatory]: int (*update_object)(struct fscache_object *object) diff --git a/Documentation/filesystems/caching/netfs-api.txt b/Documentation/filesystems/caching/netfs-api.txt index 97e6c0ecc5e..11a0a40ce44 100644 --- a/Documentation/filesystems/caching/netfs-api.txt +++ b/Documentation/filesystems/caching/netfs-api.txt @@ -32,7 +32,7 @@ This document contains the following sections: (9) Setting the data file size (10) Page alloc/read/write (11) Page uncaching - (12) Index and data file update + (12) Index and data file consistency (13) Miscellaneous cookie operations (14) Cookie unregistration (15) Index invalidation @@ -433,7 +433,7 @@ to the caller. The attribute adjustment excludes read and write operations. ===================== -PAGE READ/ALLOC/WRITE +PAGE ALLOC/READ/WRITE ===================== And the sixth step is to store and retrieve pages in the cache. There are @@ -499,7 +499,7 @@ Else if there's a copy of the page resident in the cache: (*) An argument that's 0 on success or negative for an error code. If an error occurs, it should be assumed that the page contains no usable - data. + data. fscache_readpages_cancel() may need to be called. end_io_func() will be called in process context if the read is results in an error, but it might be called in interrupt context if the read is @@ -623,6 +623,22 @@ some of the pages being read and some being allocated. Those pages will have been marked appropriately and will need uncaching. +CANCELLATION OF UNREAD PAGES +---------------------------- + +If one or more pages are passed to fscache_read_or_alloc_pages() but not then +read from the cache and also not read from the underlying filesystem then +those pages will need to have any marks and reservations removed. This can be +done by calling: + + void fscache_readpages_cancel(struct fscache_cookie *cookie, + struct list_head *pages); + +prior to returning to the caller. The cookie argument should be as passed to +fscache_read_or_alloc_pages(). Every page in the pages list will be examined +and any that have PG_fscache set will be uncached. + + ============== PAGE UNCACHING ============== @@ -690,9 +706,18 @@ written to the cache and for the cache to finish with the page generally. No error is returned. -========================== -INDEX AND DATA FILE UPDATE -========================== +=============================== +INDEX AND DATA FILE CONSISTENCY +=============================== + +To find out whether auxiliary data for an object is up to data within the +cache, the following function can be called: + + int fscache_check_consistency(struct fscache_cookie *cookie) + +This will call back to the netfs to check whether the auxiliary data associated +with a cookie is correct. It returns 0 if it is and -ESTALE if it isn't; it +may also return -ENOMEM and -ERESTARTSYS. To request an update of the index data for an index or other object, the following function should be called: diff --git a/Documentation/filesystems/cifs.txt b/Documentation/filesystems/cifs.txt deleted file mode 100644 index 49cc923a93e..00000000000 --- a/Documentation/filesystems/cifs.txt +++ /dev/null @@ -1,51 +0,0 @@ - This is the client VFS module for the Common Internet File System - (CIFS) protocol which is the successor to the Server Message Block - (SMB) protocol, the native file sharing mechanism for most early - PC operating systems. CIFS is fully supported by current network - file servers such as Windows 2000, Windows 2003 (including - Windows XP) as well by Samba (which provides excellent CIFS - server support for Linux and many other operating systems), so - this network filesystem client can mount to a wide variety of - servers. The smbfs module should be used instead of this cifs module - for mounting to older SMB servers such as OS/2. The smbfs and cifs - modules can coexist and do not conflict. The CIFS VFS filesystem - module is designed to work well with servers that implement the - newer versions (dialects) of the SMB/CIFS protocol such as Samba, - the program written by Andrew Tridgell that turns any Unix host - into a SMB/CIFS file server. - - The intent of this module is to provide the most advanced network - file system function for CIFS compliant servers, including better - POSIX compliance, secure per-user session establishment, high - performance safe distributed caching (oplock), optional packet - signing, large files, Unicode support and other internationalization - improvements. Since both Samba server and this filesystem client support - the CIFS Unix extensions, the combination can provide a reasonable - alternative to NFSv4 for fileserving in some Linux to Linux environments, - not just in Linux to Windows environments. - - This filesystem has an optional mount utility (mount.cifs) that can - be obtained from the project page and installed in the path in the same - directory with the other mount helpers (such as mount.smbfs). - Mounting using the cifs filesystem without installing the mount helper - requires specifying the server's ip address. - - For Linux 2.4: - mount //anything/here /mnt_target -o - user=username,pass=password,unc=//ip_address_of_server/sharename - - For Linux 2.5: - mount //ip_address_of_server/sharename /mnt_target -o user=username, pass=password - - - For more information on the module see the project page at - - http://us1.samba.org/samba/Linux_CIFS_client.html - - For more information on CIFS see: - - http://www.snia.org/tech_activities/CIFS - - or the Samba site: - - http://www.samba.org diff --git a/Documentation/filesystems/cifs/AUTHORS b/Documentation/filesystems/cifs/AUTHORS new file mode 100644 index 00000000000..ca4a67a0bb1 --- /dev/null +++ b/Documentation/filesystems/cifs/AUTHORS @@ -0,0 +1,56 @@ +Original Author +=============== +Steve French (sfrench@samba.org) + +The author wishes to express his appreciation and thanks to: +Andrew Tridgell (Samba team) for his early suggestions about smb/cifs VFS +improvements. Thanks to IBM for allowing me time and test resources to pursue +this project, to Jim McDonough from IBM (and the Samba Team) for his help, to +the IBM Linux JFS team for explaining many esoteric Linux filesystem features. +Jeremy Allison of the Samba team has done invaluable work in adding the server +side of the original CIFS Unix extensions and reviewing and implementing +portions of the newer CIFS POSIX extensions into the Samba 3 file server. Thank +Dave Boutcher of IBM Rochester (author of the OS/400 smb/cifs filesystem client) +for proving years ago that very good smb/cifs clients could be done on Unix-like +operating systems. Volker Lendecke, Andrew Tridgell, Urban Widmark, John +Newbigin and others for their work on the Linux smbfs module. Thanks to +the other members of the Storage Network Industry Association CIFS Technical +Workgroup for their work specifying this highly complex protocol and finally +thanks to the Samba team for their technical advice and encouragement. + +Patch Contributors +------------------ +Zwane Mwaikambo +Andi Kleen +Amrut Joshi +Shobhit Dayal +Sergey Vlasov +Richard Hughes +Yury Umanets +Mark Hamzy (for some of the early cifs IPv6 work) +Domen Puncer +Jesper Juhl (in particular for lots of whitespace/formatting cleanup) +Vince Negri and Dave Stahl (for finding an important caching bug) +Adrian Bunk (kcalloc cleanups) +Miklos Szeredi +Kazeon team for various fixes especially for 2.4 version. +Asser Ferno (Change Notify support) +Shaggy (Dave Kleikamp) for innumerable small fs suggestions and some good cleanup +Gunter Kukkukk (testing and suggestions for support of old servers) +Igor Mammedov (DFS support) +Jeff Layton (many, many fixes, as well as great work on the cifs Kerberos code) +Scott Lovenberg + +Test case and Bug Report contributors +------------------------------------- +Thanks to those in the community who have submitted detailed bug reports +and debug of problems they have found: Jochen Dolze, David Blaine, +Rene Scharfe, Martin Josefsson, Alexander Wild, Anthony Liguori, +Lars Muller, Urban Widmark, Massimiliano Ferrero, Howard Owen, +Olaf Kirch, Kieron Briggs, Nick Millington and others. Also special +mention to the Stanford Checker (SWAT) which pointed out many minor +bugs in error paths. Valuable suggestions also have come from Al Viro +and Dave Miller. + +And thanks to the IBM LTC and Power test teams and SuSE testers for +finding multiple bugs during excellent stress test runs. diff --git a/Documentation/filesystems/cifs/CHANGES b/Documentation/filesystems/cifs/CHANGES new file mode 100644 index 00000000000..bc0025cdd1c --- /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. A |