3 Add support for moounting to older pre-CIFS servers such as Windows9x and ME.
4 Add mount option for disabling the default behavior of sending byte range lock
5 requests to the server (necessary for certain applications which break with
6 mandatory lock behavior such as Evolution), and also mount option for
7 requesting case insensitive matching for path based requests (requesting
8 case sensitive is the default).
12 Add writepage performance improvements. Fix path name conversions
13 for long filenames on mounts which were done with "mapchars" mount option
14 specified. Ensure multiplex ids do not collide. Fix case in which
15 rmmod can oops if done soon after last unmount. Fix truncated
16 search (readdir) output when resume filename was a long filename.
17 Fix filename conversion when mapchars mount option was specified and
18 filename was a long filename.
22 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
23 Do not oops if root user kills cifs oplock kernel thread or
24 kills the cifsd thread (NB: killing the cifs kernel threads is not
25 recommended, unmount and rmmod cifs will kill them when they are
26 no longer needed). Fix readdir to ASCII servers (ie older servers
27 which do not support Unicode) and also require asterik.
28 Fix out of memory case in which data could be written one page
29 off in the page cache.
33 Fix caching problem, in which readdir of directory containing a file
34 which was cached could cause the file's time stamp to be updated
35 without invalidating the readahead data (so we could get stale
36 file data on the client for that file even as the server copy changed).
37 Cleanup response processing so cifsd can not loop when abnormally
43 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
44 transact response for an SMB request and search entry split across two frames.
45 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
46 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
47 unless server explicitly claims to support them in CIFS Unix extensions
48 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
49 different users from the same client to the same server. Fix oops in
50 cifs_close. Add mount option for remapping reserved characters in
51 filenames (also allow recognizing files with created by SFU which have any
52 of these seven reserved characters, except backslash, to be recognized).
53 Fix invalid transact2 message (we were sometimes trying to interpret
54 oplock breaks as SMB responses). Add ioctl for checking that the
55 current uid matches the uid of the mounter (needed by umount.cifs).
56 Reduce the number of large buffer allocations in cifs response processing
57 (significantly reduces memory pressure under heavy stress with multiple
58 processes accessing the same server at the same time).
62 Fix updates of DOS attributes and time fields so that files on NT4 servers
63 do not get marked delete on close. Display sizes of cifs buffer pools in
64 cifs stats. Fix oops in unmount when cifsd thread being killed by
65 shutdown. Add generic readv/writev and aio support. Report inode numbers
66 consistently in readdir and lookup (when serverino mount option is
67 specified use the inode number that the server reports - for both lookup
68 and readdir, otherwise by default the locally generated inode number is used
69 for inodes created in either path since servers are not always able to
70 provide unique inode numbers when exporting multiple volumes from under one
75 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
76 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
77 (mostly affects NT4 servers) by retry with handle based network operation.
78 Add new POSIX Query FS Info for returning statfs info more accurately.
79 Handle passwords with multiple commas in them.
83 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
84 Fix capabilities flags for large readx so as to allow reads larger than 64K.
88 Add module init parm for large SMB buffer size (to allow it to be changed
89 from its default of 16K) which is especially useful for large file copy
90 when mounting with the directio mount option. Fix oops after
91 returning from mount when experimental ExtendedSecurity enabled and
92 SpnegoNegotiated returning invalid error. Fix case to retry better when
93 peek returns from 1 to 3 bytes on socket which should have more data.
94 Fixed path based calls (such as cifs lookup) to handle path names
95 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
96 from Samba server to DC (Samba required dummy LM password).
100 Turn off DNOTIFY (directory change notification support) by default
101 (unless built with the experimental flag) to fix hang with KDE
102 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
103 waiting on an SMB response) in SendReceive when session dies but
104 reconnects quickly from another task. Add module init parms for
105 minimum number of large and small network buffers in the buffer pools,
106 and for the maximum number of simultaneous requests.
110 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
111 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
112 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
113 improperly zeroed buffer in CIFS Unix extensions set times call.
117 Fix internationlization problem in cifs readdir with filenames that map to
118 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
119 for readdir to netapp servers. Fix search rewind (seek into readdir to return
120 non-consecutive entries). Do not do readdir when server negotiates
121 buffer size to small to fit filename. Add support for reading POSIX ACLs from
122 the server (add also acl and noacl mount options).
126 Optionally allow using server side inode numbers, rather than client generated
127 ones by specifying mount option "serverino" - this is required for some apps
128 to work which double check hardlinked files and have persistent inode numbers.
132 Multiple bigendian fixes. On little endian systems (for reconnect after
133 network failure) fix tcp session reconnect code so we do not try first
134 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
135 as directories rather than symlinks because we can do follow link on them.
139 Add config option to enable XATTR (extended attribute) support, mapping
140 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
141 minor fixes pointed out by the Stanford SWAT checker (mostly missing
142 or out of order NULL pointer checks in little used error paths).
146 Add new mount parm to control whether mode check (generic_permission) is done
147 on the client. If Unix extensions are enabled and the uids on the client
148 and server do not match, client permission checks are meaningless on
149 server uids that do not exist on the client (this does not affect the
150 normal ACL check which occurs on the server). Fix default uid
151 on mknod to match create and mkdir. Add optional mount parm to allow
152 override of the default uid behavior (in which the server sets the uid
153 and gid of newly created files). Normally for network filesystem mounts
154 user want the server to set the uid/gid on newly created files (rather than
155 using uid of the client processes you would in a local filesystem).
159 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
160 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
161 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
162 (block/char/fifo) properly. Remove spurious mount warning log entry when
163 credentials passed as mount argument. Set major/minor device number in
164 inode for block and char devices when unix extensions enabled.
168 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
169 amounts of return data. Properly limit requests to MAX_REQ (50
170 is the usual maximum active multiplex SMB/CIFS requests per server).
171 Do not kill cifsd (and thus hurt the other SMB session) when more than one
172 session to the same server (but with different userids) exists and one
173 of the two user's smb sessions is being removed while leaving the other.
174 Do not loop reconnecting in cifsd demultiplex thread when admin
175 kills the thread without going through unmount.
179 Do not rename hardlinked files (since that should be a noop). Flush
180 cached write behind data when reopening a file after session abend,
181 except when already in write. Grab per socket sem during reconnect
182 to avoid oops in sendmsg if overlapping with reconnect. Do not
183 reset cached inode file size on readdir for files open for write on
189 Update number of blocks in file so du command is happier (in Linux a fake
190 blocksize of 512 is required for calculating number of blocks in inode).
191 Fix prepare write of partial pages to read in data from server if possible.
192 Fix race on tcpStatus field between unmount and reconnection code, causing
193 cifsd process sometimes to hang around forever. Improve out of memory
194 checks in cifs_filldir
198 Fix incorrect file size in file handle based setattr on big endian hardware.
199 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
200 and closing file structs in writepage/partialpagewrite. Add statistics
201 for each mounted share (new menuconfig option). Fix endianness problem in
202 volume information displayed in /proc/fs/cifs/DebugData (only affects
203 affects big endian architectures). Prevent renames while constructing
204 path names for open, mkdir and rmdir.
208 Change to mempools for alloc smb request buffers and multiplex structs
209 to better handle low memory problems (and potential deadlocks).
213 Fix incomplete listings of large directories on Samba servers when Unix
214 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
215 rename deadlock when writing out dirty pages at same time.
219 Fix open of files in which O_CREATE can cause the mode to change in
220 some cases. Fix case in which retry of write overlaps file close.
221 Fix PPC64 build error. Reduce excessive stack usage in smb password
222 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
226 Fixes for large file copy, signal handling, socket retry, buffer
227 allocation and low memory situations.
231 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
232 also now allowing support for specifying client netbiosname. NT4 support added.
236 Fix reconnection (and certain failed mounts) to properly wake up the
237 blocked users thread so it does not seem hung (in some cases was blocked
238 until the cifs receive timeout expired). Fix spurious error logging
239 to kernel log when application with open network files killed.
243 Fix /proc/fs module unload warning message (that could be logged
244 to the kernel log). Fix intermittent failure in connectathon
245 test7 (hardlink count not immediately refreshed in case in which
246 inode metadata can be incorrectly kept cached when time near zero)
250 Allow file_mode and dir_mode (specified at mount time) to be enforced
251 locally (the server already enforced its own ACLs too) for servers
252 that do not report the correct mode (do not support the
253 CIFS Unix Extensions).
257 Fix some small memory leaks in some unmount error paths. Fix major leak
258 of cache pages in readpages causing multiple read oriented stress
259 testcases (including fsx, and even large file copy) to fail over time.
263 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
264 This allows files that differ only in case and improves performance of file
265 creation and file open to such servers. Fix semaphore conflict which causes
266 slow delete of open file to Samba (which unfortunately can cause an oplock
267 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
271 fixes to cifs_readpages for fsx test case
275 Fix caching data integrity bug when extending file size especially when no
276 oplock on file. Fix spurious logging of valid already parsed mount options
277 that are parsed outside of the cifs vfs such as nosuid.
282 Connect to server when port number override not specified, and tcp port
283 unitialized. Reset search to restart at correct file when kernel routine
284 filldir returns error during large directory searches (readdir).
288 Fix caching problem when files opened by multiple clients in which
289 page cache could contain stale data, and write through did
290 not occur often enough while file was still open when read ahead
291 (read oplock) not allowed. Treat "sep=" when first mount option
292 as an overrride of comma as the default separator between mount
297 Allow passwords longer than 16 bytes. Allow null password string.
301 Gracefully clean up failed mounts when attempting to mount to servers such as
302 Windows 98 that terminate tcp sessions during prototocol negotiation. Handle
303 embedded commas in mount parsing of passwords.
307 Invalidate local inode cached pages on oplock break and when last file
308 instance is closed so that the client does not continue using stale local
309 copy rather than later modified server copy of file. Do not reconnect
310 when server drops the tcp session prematurely before negotiate
311 protocol response. Fix oops in roepen_file when dentry freed. Allow
312 the support for CIFS Unix Extensions to be disabled via proc interface.
316 Fix hang in commit_write during reconnection of open files under heavy load.
317 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
318 which also fixes any possible races when cifs signatures are enabled in SMBs
319 being sent out of signature sequence number order.
323 Fix byte range locking bug (endian problem) causing bad offset and
328 Fix oops (in send_sig) caused by CIFS unmount code trying to
329 wake up the demultiplex thread after it had exited. Do not log
330 error on harmless oplock release of closed handle.
334 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
335 Fix problem reconnecting secondary mounts to same server after session
336 failure. Fix invalid dentry - race in mkdir when directory gets created
337 by another client between the lookup and mkdir.
341 Fix to list processing in reopen_files. Fix reconnection when server hung
342 but tcpip session still alive. Set proper timeout on socket read.
346 Add missing mount options including iocharset. SMP fixes in write and open.
347 Fix errors in reconnecting after TCP session failure. Fix module unloading
348 of default nls codepage
352 Active smb transactions should never go negative (fix double FreeXid). Fix
353 list processing in file routines. Check return code on kmalloc in open.
354 Fix spinlock usage for SMP.
358 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
359 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
360 on create hard link when server does not support them.
364 Fix scheduling while atomic error in getting inode info on newly created file.
365 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
369 Fix oops on write to dead tcp session. Remove error log write for case when file open
370 O_CREAT but not O_EXCL
374 Fix non-POSIX behavior on rename of open file and delete of open file by taking
375 advantage of trans2 SetFileInfo rename facility if available on target server.
376 Retry on ENOSPC and EAGAIN socket errors.
380 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
381 allocation size miscalculation. After oplock token lost do not read through
386 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
390 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
391 during auto reconnection to server after server recovered from failure.
395 Finish support for Linux 2.5 open/create changes, which removes the
396 redundant NTCreate/QPathInfo/close that was sent during file create.
397 Enable oplock by default. Enable packet signing by default (needed to
398 access many recent Windows servers)
402 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
403 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
404 we will choose a cifs user session (smb uid) that better matches the local
405 uid if a) the mount uid does not match the current uid and b) we have another
406 session to the same server (ip address) for a different mount which
407 matches the current local uid.
411 Add support for mknod of block or character devices. Fix oplock
412 code (distributed caching) to properly send response to oplock
417 Finish up CIFS packet digital signing for the default
418 NTLM security case. This should help Windows 2003
419 network interoperability since it is common for
420 packet signing to be required now. Fix statfs (stat -f)
421 which recently started returning errors due to
422 invalid value (-1 instead of 0) being set in the
423 struct kstatfs f_ffiles field.
427 Fix oops on stopping oplock thread when removing cifs when
432 Fix mount options for ro (readonly), uid, gid and file and directory mode.
436 Fix errors displayed on failed mounts to be more understandable.
437 Fixed various incorrect or misleading smb to posix error code mappings.
441 Fix display of NTFS DFS junctions to display as symlinks.
442 They are the network equivalent. Fix oops in
443 cifs_partialpagewrite caused by missing spinlock protection
444 of openfile linked list. Allow writebehind caching errors to
445 be returned to the application at file close.
449 Clean up options displayed in /proc/mounts by show_options to
450 be more consistent with other filesystems.
454 Fix delete of readonly file to Windows servers. Reflect
455 presence or absence of read only dos attribute in mode
456 bits for servers that do not support CIFS Unix extensions.
457 Fix shortened results on readdir of large directories to
458 servers supporting CIFS Unix extensions (caused by
459 incorrect resume key).
463 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
467 unload nls if mount fails.
471 Add resume key support to search (readdir) code to workaround
472 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
473 allows disabling caching of attribute information for
478 Add more oplock handling (distributed caching code). Remove
479 dead code. Remove excessive stack space utilization from
484 Fix oops in get dfs referral (triggered when null path sent in to
485 mount). Add support for overriding rsize at mount time.
489 Fix buffer overrun in readdir which caused intermittent kernel oopses.
490 Fix writepage code to release kmap on write data. Allow "-ip=" new
491 mount option to be passed in on parameter distinct from the first part
492 (server name portion of) the UNC name. Allow override of the
493 tcp port of the target server via new mount option "-port="
497 Fix search handle leak on rewind. Fix setuid and gid so that they are
498 reflected in the local inode immediately. Cleanup of whitespace
499 to make 2.4 and 2.5 versions more consistent.
504 Fix signal sending so that captive thread (cifsd) exits on umount
505 (which was causing the warning in kmem_cache_free of the request buffers
506 at rmmod time). This had broken as a sideeffect of the recent global
507 kernel change to daemonize. Fix memory leak in readdir code which
508 showed up in "ls -R" (and applications that did search rewinding).
512 Reconnect tids and fids after session reconnection (still do not
513 reconnect byte range locks though). Fix problem caching
514 lookup information for directory inodes, improving performance,
515 especially in deep directory trees. Fix various build warnings.
519 Finish fixes to commit write for caching/readahead consistency. fsx
520 now works to Samba servers. Fix oops caused when readahead
521 was interrupted by a signal.
525 Fix data corruption (in partial page after truncate) that caused fsx to
526 fail to Windows servers. Cleaned up some extraneous error logging in
527 common error paths. Add generic sendfile support.
531 Fix memory leak in AllocMidQEntry.
532 Finish reconnection logic, so connection with server can be dropped
533 (or server rebooted) and the cifs client will reconnect.
537 Fix temporary socket leak when bad userid or password specified
538 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
539 over 16K to allow negotiation of up to Samba and Windows server default read
540 sizes. Add support for readpages
544 Fix oops when username not passed in on mount. Extensive fixes and improvements
545 to error logging (strip redundant newlines, change debug macros to ensure newline
546 passed in and to be more consistent). Fix writepage wrong file handle problem,
547 a readonly file handle could be incorrectly used to attempt to write out
548 file updates through the page cache to multiply open files. This could cause
549 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
550 shares to the same Windows server when using different usernames
551 (doing this to Samba servers worked but Windows was rejecting it) - now it is
552 possible to use different userids when connecting to the same server from a
553 Linux client. Fix oops when treeDisconnect called during unmount on
554 previously freed socket.
558 Fix oops in readpages caused by not setting address space operations in inode in
563 Includes support for deleting of open files and renaming over existing files (per POSIX
564 requirement). Add readlink support for Windows junction points (directory symlinks).
568 Changed read and write to go through pagecache. Added additional address space operations.
569 Memory mapped operations now working.
573 Added writepage code for additional memory mapping support. Fixed leak in xids causing
574 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
575 every stat call. Additional formatting cleanup.
579 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
583 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
584 Also included a modified version of his fix to protect global list manipulation of
585 the smb session and tree connection and mid related global variables.
589 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
590 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
591 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
595 More stylistic updates to better match kernel style. Add additional statistics
596 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
597 and CIFS Packet Signing enablement.
601 Replace call to sleep_on with safer wait_on_event.
602 Make stylistic changes to better match kernel style recommendations.
603 Remove most typedef usage (except for the PDUs themselves).
607 Update mount so the -unc mount option is no longer required (the ip address can be specified
608 in a UNC style device name. Implementation of readpage/writepage started.
612 Fix intermittent problem with incorrect smb header checking on badly
613 fragmented tcp responses
617 Fixes to setting of allocation size and file size.
621 Various 2.5.38 fixes. Now works on 2.5.38
625 Prepare for 2.5 kernel merge. Remove ifdefs.
629 Socket buffer management fixes. Fix dual free.
633 Various big endian fixes for hardlinks and symlinks and also for dfs.
637 Various big endian fixes for servers with Unix extensions such as Samba
641 Various FindNext fixes for incorrect filenames on large directory searches on big endian
642 clients. basic posix file i/o tests now work on big endian machines, not just le
646 SessionSetup and NegotiateProtocol now work from Big Endian machines.
647 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
648 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
652 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
653 files now return the correct rumber of links on fstat as they are repeatedly linked and unlinked.
657 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
658 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
659 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
660 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
664 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
665 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
669 Rewrote much of connection and mount/unmount logic to handle bugs with
670 multiple uses to same share, multiple users to same server etc.
674 Fixed major problem with dentry corruption (missing call to dput)
678 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
679 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
680 although corresponding function not fully implemented in the vfs yet
684 Fixed dentry caching bug, misc. cleanup
688 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
689 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
690 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
694 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
695 and tested against Samba 2.2.5
700 1) Fixed lockrange to be correct (it was one byte too short)
702 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
703 show range as locked when there is a conflict with an existing lock.
705 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
706 in most cases. Eventually will offer optional ability to query server for the correct perms.
708 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
709 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
712 4) Fixed error logging of valid mount options
714 5) Removed logging of password field.
716 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
717 and cleaned them up and made them more consistent with other cifs functions.
719 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
720 (with or without Unix exentions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
721 nor is the symlink support using the Unix extensions
723 8) Started adding the readlink and follow_link code
git://ftp.safe.ca / safe / jmp / linux-2.6 / blob