3 Add mount option for disabling the default behavior of sending byte range lock
4 requests to the server (necessary for certain applications which break with
5 mandatory lock behavior such as Evolution), and also mount option for
6 requesting case insensitive matching for path based requests (requesting
7 case sensitive is the default).
11 Add writepage performance improvements. Fix path name conversions
12 for long filenames on mounts which were done with "mapchars" mount option
17 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
18 Do not oops if root user kills cifs oplock kernel thread or
19 kills the cifsd thread (NB: killing the cifs kernel threads is not
20 recommended, unmount and rmmod cifs will kill them when they are
21 no longer needed). Fix readdir to ASCII servers (ie older servers
22 which do not support Unicode) and also require asterik.
23 Fix out of memory case in which data could be written one page
24 off in the page cache.
28 Fix caching problem, in which readdir of directory containing a file
29 which was cached could cause the file's time stamp to be updated
30 without invalidating the readahead data (so we could get stale
31 file data on the client for that file even as the server copy changed).
32 Cleanup response processing so cifsd can not loop when abnormally
38 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
39 transact response for an SMB request and search entry split across two frames.
40 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
41 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
42 unless server explicitly claims to support them in CIFS Unix extensions
43 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
44 different users from the same client to the same server. Fix oops in
45 cifs_close. Add mount option for remapping reserved characters in
46 filenames (also allow recognizing files with created by SFU which have any
47 of these seven reserved characters, except backslash, to be recognized).
48 Fix invalid transact2 message (we were sometimes trying to interpret
49 oplock breaks as SMB responses). Add ioctl for checking that the
50 current uid matches the uid of the mounter (needed by umount.cifs).
51 Reduce the number of large buffer allocations in cifs response processing
52 (significantly reduces memory pressure under heavy stress with multiple
53 processes accessing the same server at the same time).
57 Fix updates of DOS attributes and time fields so that files on NT4 servers
58 do not get marked delete on close. Display sizes of cifs buffer pools in
59 cifs stats. Fix oops in unmount when cifsd thread being killed by
60 shutdown. Add generic readv/writev and aio support. Report inode numbers
61 consistently in readdir and lookup (when serverino mount option is
62 specified use the inode number that the server reports - for both lookup
63 and readdir, otherwise by default the locally generated inode number is used
64 for inodes created in either path since servers are not always able to
65 provide unique inode numbers when exporting multiple volumes from under one
70 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
71 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
72 (mostly affects NT4 servers) by retry with handle based network operation.
73 Add new POSIX Query FS Info for returning statfs info more accurately.
74 Handle passwords with multiple commas in them.
78 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
79 Fix capabilities flags for large readx so as to allow reads larger than 64K.
83 Add module init parm for large SMB buffer size (to allow it to be changed
84 from its default of 16K) which is especially useful for large file copy
85 when mounting with the directio mount option. Fix oops after
86 returning from mount when experimental ExtendedSecurity enabled and
87 SpnegoNegotiated returning invalid error. Fix case to retry better when
88 peek returns from 1 to 3 bytes on socket which should have more data.
89 Fixed path based calls (such as cifs lookup) to handle path names
90 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
91 from Samba server to DC (Samba required dummy LM password).
95 Turn off DNOTIFY (directory change notification support) by default
96 (unless built with the experimental flag) to fix hang with KDE
97 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
98 waiting on an SMB response) in SendReceive when session dies but
99 reconnects quickly from another task. Add module init parms for
100 minimum number of large and small network buffers in the buffer pools,
101 and for the maximum number of simultaneous requests.
105 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
106 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
107 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
108 improperly zeroed buffer in CIFS Unix extensions set times call.
112 Fix internationlization problem in cifs readdir with filenames that map to
113 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
114 for readdir to netapp servers. Fix search rewind (seek into readdir to return
115 non-consecutive entries). Do not do readdir when server negotiates
116 buffer size to small to fit filename. Add support for reading POSIX ACLs from
117 the server (add also acl and noacl mount options).
121 Optionally allow using server side inode numbers, rather than client generated
122 ones by specifying mount option "serverino" - this is required for some apps
123 to work which double check hardlinked files and have persistent inode numbers.
127 Multiple bigendian fixes. On little endian systems (for reconnect after
128 network failure) fix tcp session reconnect code so we do not try first
129 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
130 as directories rather than symlinks because we can do follow link on them.
134 Add config option to enable XATTR (extended attribute) support, mapping
135 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
136 minor fixes pointed out by the Stanford SWAT checker (mostly missing
137 or out of order NULL pointer checks in little used error paths).
141 Add new mount parm to control whether mode check (generic_permission) is done
142 on the client. If Unix extensions are enabled and the uids on the client
143 and server do not match, client permission checks are meaningless on
144 server uids that do not exist on the client (this does not affect the
145 normal ACL check which occurs on the server). Fix default uid
146 on mknod to match create and mkdir. Add optional mount parm to allow
147 override of the default uid behavior (in which the server sets the uid
148 and gid of newly created files). Normally for network filesystem mounts
149 user want the server to set the uid/gid on newly created files (rather than
150 using uid of the client processes you would in a local filesystem).
154 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
155 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
156 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
157 (block/char/fifo) properly. Remove spurious mount warning log entry when
158 credentials passed as mount argument. Set major/minor device number in
159 inode for block and char devices when unix extensions enabled.
163 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
164 amounts of return data. Properly limit requests to MAX_REQ (50
165 is the usual maximum active multiplex SMB/CIFS requests per server).
166 Do not kill cifsd (and thus hurt the other SMB session) when more than one
167 session to the same server (but with different userids) exists and one
168 of the two user's smb sessions is being removed while leaving the other.
169 Do not loop reconnecting in cifsd demultiplex thread when admin
170 kills the thread without going through unmount.
174 Do not rename hardlinked files (since that should be a noop). Flush
175 cached write behind data when reopening a file after session abend,
176 except when already in write. Grab per socket sem during reconnect
177 to avoid oops in sendmsg if overlapping with reconnect. Do not
178 reset cached inode file size on readdir for files open for write on
184 Update number of blocks in file so du command is happier (in Linux a fake
185 blocksize of 512 is required for calculating number of blocks in inode).
186 Fix prepare write of partial pages to read in data from server if possible.
187 Fix race on tcpStatus field between unmount and reconnection code, causing
188 cifsd process sometimes to hang around forever. Improve out of memory
189 checks in cifs_filldir
193 Fix incorrect file size in file handle based setattr on big endian hardware.
194 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
195 and closing file structs in writepage/partialpagewrite. Add statistics
196 for each mounted share (new menuconfig option). Fix endianness problem in
197 volume information displayed in /proc/fs/cifs/DebugData (only affects
198 affects big endian architectures). Prevent renames while constructing
199 path names for open, mkdir and rmdir.
203 Change to mempools for alloc smb request buffers and multiplex structs
204 to better handle low memory problems (and potential deadlocks).
208 Fix incomplete listings of large directories on Samba servers when Unix
209 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
210 rename deadlock when writing out dirty pages at same time.
214 Fix open of files in which O_CREATE can cause the mode to change in
215 some cases. Fix case in which retry of write overlaps file close.
216 Fix PPC64 build error. Reduce excessive stack usage in smb password
217 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
221 Fixes for large file copy, signal handling, socket retry, buffer
222 allocation and low memory situations.
226 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
227 also now allowing support for specifying client netbiosname. NT4 support added.
231 Fix reconnection (and certain failed mounts) to properly wake up the
232 blocked users thread so it does not seem hung (in some cases was blocked
233 until the cifs receive timeout expired). Fix spurious error logging
234 to kernel log when application with open network files killed.
238 Fix /proc/fs module unload warning message (that could be logged
239 to the kernel log). Fix intermittent failure in connectathon
240 test7 (hardlink count not immediately refreshed in case in which
241 inode metadata can be incorrectly kept cached when time near zero)
245 Allow file_mode and dir_mode (specified at mount time) to be enforced
246 locally (the server already enforced its own ACLs too) for servers
247 that do not report the correct mode (do not support the
248 CIFS Unix Extensions).
252 Fix some small memory leaks in some unmount error paths. Fix major leak
253 of cache pages in readpages causing multiple read oriented stress
254 testcases (including fsx, and even large file copy) to fail over time.
258 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
259 This allows files that differ only in case and improves performance of file
260 creation and file open to such servers. Fix semaphore conflict which causes
261 slow delete of open file to Samba (which unfortunately can cause an oplock
262 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
266 fixes to cifs_readpages for fsx test case
270 Fix caching data integrity bug when extending file size especially when no
271 oplock on file. Fix spurious logging of valid already parsed mount options
272 that are parsed outside of the cifs vfs such as nosuid.
277 Connect to server when port number override not specified, and tcp port
278 unitialized. Reset search to restart at correct file when kernel routine
279 filldir returns error during large directory searches (readdir).
283 Fix caching problem when files opened by multiple clients in which
284 page cache could contain stale data, and write through did
285 not occur often enough while file was still open when read ahead
286 (read oplock) not allowed. Treat "sep=" when first mount option
287 as an overrride of comma as the default separator between mount
292 Allow passwords longer than 16 bytes. Allow null password string.
296 Gracefully clean up failed mounts when attempting to mount to servers such as
297 Windows 98 that terminate tcp sessions during prototocol negotiation. Handle
298 embedded commas in mount parsing of passwords.
302 Invalidate local inode cached pages on oplock break and when last file
303 instance is closed so that the client does not continue using stale local
304 copy rather than later modified server copy of file. Do not reconnect
305 when server drops the tcp session prematurely before negotiate
306 protocol response. Fix oops in roepen_file when dentry freed. Allow
307 the support for CIFS Unix Extensions to be disabled via proc interface.
311 Fix hang in commit_write during reconnection of open files under heavy load.
312 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
313 which also fixes any possible races when cifs signatures are enabled in SMBs
314 being sent out of signature sequence number order.
318 Fix byte range locking bug (endian problem) causing bad offset and
323 Fix oops (in send_sig) caused by CIFS unmount code trying to
324 wake up the demultiplex thread after it had exited. Do not log
325 error on harmless oplock release of closed handle.
329 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
330 Fix problem reconnecting secondary mounts to same server after session
331 failure. Fix invalid dentry - race in mkdir when directory gets created
332 by another client between the lookup and mkdir.
336 Fix to list processing in reopen_files. Fix reconnection when server hung
337 but tcpip session still alive. Set proper timeout on socket read.
341 Add missing mount options including iocharset. SMP fixes in write and open.
342 Fix errors in reconnecting after TCP session failure. Fix module unloading
343 of default nls codepage
347 Active smb transactions should never go negative (fix double FreeXid). Fix
348 list processing in file routines. Check return code on kmalloc in open.
349 Fix spinlock usage for SMP.
353 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
354 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
355 on create hard link when server does not support them.
359 Fix scheduling while atomic error in getting inode info on newly created file.
360 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
364 Fix oops on write to dead tcp session. Remove error log write for case when file open
365 O_CREAT but not O_EXCL
369 Fix non-POSIX behavior on rename of open file and delete of open file by taking
370 advantage of trans2 SetFileInfo rename facility if available on target server.
371 Retry on ENOSPC and EAGAIN socket errors.
375 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
376 allocation size miscalculation. After oplock token lost do not read through
381 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
385 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
386 during auto reconnection to server after server recovered from failure.
390 Finish support for Linux 2.5 open/create changes, which removes the
391 redundant NTCreate/QPathInfo/close that was sent during file create.
392 Enable oplock by default. Enable packet signing by default (needed to
393 access many recent Windows servers)
397 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
398 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
399 we will choose a cifs user session (smb uid) that better matches the local
400 uid if a) the mount uid does not match the current uid and b) we have another
401 session to the same server (ip address) for a different mount which
402 matches the current local uid.
406 Add support for mknod of block or character devices. Fix oplock
407 code (distributed caching) to properly send response to oplock
412 Finish up CIFS packet digital signing for the default
413 NTLM security case. This should help Windows 2003
414 network interoperability since it is common for
415 packet signing to be required now. Fix statfs (stat -f)
416 which recently started returning errors due to
417 invalid value (-1 instead of 0) being set in the
418 struct kstatfs f_ffiles field.
422 Fix oops on stopping oplock thread when removing cifs when
427 Fix mount options for ro (readonly), uid, gid and file and directory mode.
431 Fix errors displayed on failed mounts to be more understandable.
432 Fixed various incorrect or misleading smb to posix error code mappings.
436 Fix display of NTFS DFS junctions to display as symlinks.
437 They are the network equivalent. Fix oops in
438 cifs_partialpagewrite caused by missing spinlock protection
439 of openfile linked list. Allow writebehind caching errors to
440 be returned to the application at file close.
444 Clean up options displayed in /proc/mounts by show_options to
445 be more consistent with other filesystems.
449 Fix delete of readonly file to Windows servers. Reflect
450 presence or absence of read only dos attribute in mode
451 bits for servers that do not support CIFS Unix extensions.
452 Fix shortened results on readdir of large directories to
453 servers supporting CIFS Unix extensions (caused by
454 incorrect resume key).
458 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
462 unload nls if mount fails.
466 Add resume key support to search (readdir) code to workaround
467 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
468 allows disabling caching of attribute information for
473 Add more oplock handling (distributed caching code). Remove
474 dead code. Remove excessive stack space utilization from
479 Fix oops in get dfs referral (triggered when null path sent in to
480 mount). Add support for overriding rsize at mount time.
484 Fix buffer overrun in readdir which caused intermittent kernel oopses.
485 Fix writepage code to release kmap on write data. Allow "-ip=" new
486 mount option to be passed in on parameter distinct from the first part
487 (server name portion of) the UNC name. Allow override of the
488 tcp port of the target server via new mount option "-port="
492 Fix search handle leak on rewind. Fix setuid and gid so that they are
493 reflected in the local inode immediately. Cleanup of whitespace
494 to make 2.4 and 2.5 versions more consistent.
499 Fix signal sending so that captive thread (cifsd) exits on umount
500 (which was causing the warning in kmem_cache_free of the request buffers
501 at rmmod time). This had broken as a sideeffect of the recent global
502 kernel change to daemonize. Fix memory leak in readdir code which
503 showed up in "ls -R" (and applications that did search rewinding).
507 Reconnect tids and fids after session reconnection (still do not
508 reconnect byte range locks though). Fix problem caching
509 lookup information for directory inodes, improving performance,
510 especially in deep directory trees. Fix various build warnings.
514 Finish fixes to commit write for caching/readahead consistency. fsx
515 now works to Samba servers. Fix oops caused when readahead
516 was interrupted by a signal.
520 Fix data corruption (in partial page after truncate) that caused fsx to
521 fail to Windows servers. Cleaned up some extraneous error logging in
522 common error paths. Add generic sendfile support.
526 Fix memory leak in AllocMidQEntry.
527 Finish reconnection logic, so connection with server can be dropped
528 (or server rebooted) and the cifs client will reconnect.
532 Fix temporary socket leak when bad userid or password specified
533 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
534 over 16K to allow negotiation of up to Samba and Windows server default read
535 sizes. Add support for readpages
539 Fix oops when username not passed in on mount. Extensive fixes and improvements
540 to error logging (strip redundant newlines, change debug macros to ensure newline
541 passed in and to be more consistent). Fix writepage wrong file handle problem,
542 a readonly file handle could be incorrectly used to attempt to write out
543 file updates through the page cache to multiply open files. This could cause
544 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
545 shares to the same Windows server when using different usernames
546 (doing this to Samba servers worked but Windows was rejecting it) - now it is
547 possible to use different userids when connecting to the same server from a
548 Linux client. Fix oops when treeDisconnect called during unmount on
549 previously freed socket.
553 Fix oops in readpages caused by not setting address space operations in inode in
558 Includes support for deleting of open files and renaming over existing files (per POSIX
559 requirement). Add readlink support for Windows junction points (directory symlinks).
563 Changed read and write to go through pagecache. Added additional address space operations.
564 Memory mapped operations now working.
568 Added writepage code for additional memory mapping support. Fixed leak in xids causing
569 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
570 every stat call. Additional formatting cleanup.
574 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
578 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
579 Also included a modified version of his fix to protect global list manipulation of
580 the smb session and tree connection and mid related global variables.
584 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
585 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
586 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
590 More stylistic updates to better match kernel style. Add additional statistics
591 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
592 and CIFS Packet Signing enablement.
596 Replace call to sleep_on with safer wait_on_event.
597 Make stylistic changes to better match kernel style recommendations.
598 Remove most typedef usage (except for the PDUs themselves).
602 Update mount so the -unc mount option is no longer required (the ip address can be specified
603 in a UNC style device name. Implementation of readpage/writepage started.
607 Fix intermittent problem with incorrect smb header checking on badly
608 fragmented tcp responses
612 Fixes to setting of allocation size and file size.
616 Various 2.5.38 fixes. Now works on 2.5.38
620 Prepare for 2.5 kernel merge. Remove ifdefs.
624 Socket buffer management fixes. Fix dual free.
628 Various big endian fixes for hardlinks and symlinks and also for dfs.
632 Various big endian fixes for servers with Unix extensions such as Samba
636 Various FindNext fixes for incorrect filenames on large directory searches on big endian
637 clients. basic posix file i/o tests now work on big endian machines, not just le
641 SessionSetup and NegotiateProtocol now work from Big Endian machines.
642 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
643 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
647 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
648 files now return the correct rumber of links on fstat as they are repeatedly linked and unlinked.
652 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
653 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
654 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
655 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
659 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
660 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
664 Rewrote much of connection and mount/unmount logic to handle bugs with
665 multiple uses to same share, multiple users to same server etc.
669 Fixed major problem with dentry corruption (missing call to dput)
673 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
674 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
675 although corresponding function not fully implemented in the vfs yet
679 Fixed dentry caching bug, misc. cleanup
683 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
684 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
685 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
689 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
690 and tested against Samba 2.2.5
695 1) Fixed lockrange to be correct (it was one byte too short)
697 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
698 show range as locked when there is a conflict with an existing lock.
700 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
701 in most cases. Eventually will offer optional ability to query server for the correct perms.
703 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
704 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
707 4) Fixed error logging of valid mount options
709 5) Removed logging of password field.
711 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
712 and cleaned them up and made them more consistent with other cifs functions.
714 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
715 (with or without Unix exentions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
716 nor is the symlink support using the Unix extensions
718 8) Started adding the readlink and follow_link code
projects / mirror_ubuntu-artful-kernel.git / blob