3 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
4 For these older servers, add option for passing netbios name of server in
5 on mount (servernetbiosname). Add suspend support for power management, to
6 avoid cifsd thread preventing software suspend from working.
7 Add mount option for disabling the default behavior of sending byte range lock
8 requests to the server (necessary for certain applications which break with
9 mandatory lock behavior such as Evolution), and also mount option for
10 requesting case insensitive matching for path based requests (requesting
11 case sensitive is the default).
15 Add writepage performance improvements. Fix path name conversions
16 for long filenames on mounts which were done with "mapchars" mount option
17 specified. Ensure multiplex ids do not collide. Fix case in which
18 rmmod can oops if done soon after last unmount. Fix truncated
19 search (readdir) output when resume filename was a long filename.
20 Fix filename conversion when mapchars mount option was specified and
21 filename was a long filename.
25 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
26 Do not oops if root user kills cifs oplock kernel thread or
27 kills the cifsd thread (NB: killing the cifs kernel threads is not
28 recommended, unmount and rmmod cifs will kill them when they are
29 no longer needed). Fix readdir to ASCII servers (ie older servers
30 which do not support Unicode) and also require asterisk.
31 Fix out of memory case in which data could be written one page
32 off in the page cache.
36 Fix caching problem, in which readdir of directory containing a file
37 which was cached could cause the file's time stamp to be updated
38 without invalidating the readahead data (so we could get stale
39 file data on the client for that file even as the server copy changed).
40 Cleanup response processing so cifsd can not loop when abnormally
46 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
47 transact response for an SMB request and search entry split across two frames.
48 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
49 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
50 unless server explicitly claims to support them in CIFS Unix extensions
51 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
52 different users from the same client to the same server. Fix oops in
53 cifs_close. Add mount option for remapping reserved characters in
54 filenames (also allow recognizing files with created by SFU which have any
55 of these seven reserved characters, except backslash, to be recognized).
56 Fix invalid transact2 message (we were sometimes trying to interpret
57 oplock breaks as SMB responses). Add ioctl for checking that the
58 current uid matches the uid of the mounter (needed by umount.cifs).
59 Reduce the number of large buffer allocations in cifs response processing
60 (significantly reduces memory pressure under heavy stress with multiple
61 processes accessing the same server at the same time).
65 Fix updates of DOS attributes and time fields so that files on NT4 servers
66 do not get marked delete on close. Display sizes of cifs buffer pools in
67 cifs stats. Fix oops in unmount when cifsd thread being killed by
68 shutdown. Add generic readv/writev and aio support. Report inode numbers
69 consistently in readdir and lookup (when serverino mount option is
70 specified use the inode number that the server reports - for both lookup
71 and readdir, otherwise by default the locally generated inode number is used
72 for inodes created in either path since servers are not always able to
73 provide unique inode numbers when exporting multiple volumes from under one
78 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
79 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
80 (mostly affects NT4 servers) by retry with handle based network operation.
81 Add new POSIX Query FS Info for returning statfs info more accurately.
82 Handle passwords with multiple commas in them.
86 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
87 Fix capabilities flags for large readx so as to allow reads larger than 64K.
91 Add module init parm for large SMB buffer size (to allow it to be changed
92 from its default of 16K) which is especially useful for large file copy
93 when mounting with the directio mount option. Fix oops after
94 returning from mount when experimental ExtendedSecurity enabled and
95 SpnegoNegotiated returning invalid error. Fix case to retry better when
96 peek returns from 1 to 3 bytes on socket which should have more data.
97 Fixed path based calls (such as cifs lookup) to handle path names
98 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
99 from Samba server to DC (Samba required dummy LM password).
103 Turn off DNOTIFY (directory change notification support) by default
104 (unless built with the experimental flag) to fix hang with KDE
105 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
106 waiting on an SMB response) in SendReceive when session dies but
107 reconnects quickly from another task. Add module init parms for
108 minimum number of large and small network buffers in the buffer pools,
109 and for the maximum number of simultaneous requests.
113 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
114 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
115 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
116 improperly zeroed buffer in CIFS Unix extensions set times call.
120 Fix internationalization problem in cifs readdir with filenames that map to
121 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
122 for readdir to netapp servers. Fix search rewind (seek into readdir to return
123 non-consecutive entries). Do not do readdir when server negotiates
124 buffer size to small to fit filename. Add support for reading POSIX ACLs from
125 the server (add also acl and noacl mount options).
129 Optionally allow using server side inode numbers, rather than client generated
130 ones by specifying mount option "serverino" - this is required for some apps
131 to work which double check hardlinked files and have persistent inode numbers.
135 Multiple bigendian fixes. On little endian systems (for reconnect after
136 network failure) fix tcp session reconnect code so we do not try first
137 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
138 as directories rather than symlinks because we can do follow link on them.
142 Add config option to enable XATTR (extended attribute) support, mapping
143 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
144 minor fixes pointed out by the Stanford SWAT checker (mostly missing
145 or out of order NULL pointer checks in little used error paths).
149 Add new mount parm to control whether mode check (generic_permission) is done
150 on the client. If Unix extensions are enabled and the uids on the client
151 and server do not match, client permission checks are meaningless on
152 server uids that do not exist on the client (this does not affect the
153 normal ACL check which occurs on the server). Fix default uid
154 on mknod to match create and mkdir. Add optional mount parm to allow
155 override of the default uid behavior (in which the server sets the uid
156 and gid of newly created files). Normally for network filesystem mounts
157 user want the server to set the uid/gid on newly created files (rather than
158 using uid of the client processes you would in a local filesystem).
162 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
163 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
164 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
165 (block/char/fifo) properly. Remove spurious mount warning log entry when
166 credentials passed as mount argument. Set major/minor device number in
167 inode for block and char devices when unix extensions enabled.
171 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
172 amounts of return data. Properly limit requests to MAX_REQ (50
173 is the usual maximum active multiplex SMB/CIFS requests per server).
174 Do not kill cifsd (and thus hurt the other SMB session) when more than one
175 session to the same server (but with different userids) exists and one
176 of the two user's smb sessions is being removed while leaving the other.
177 Do not loop reconnecting in cifsd demultiplex thread when admin
178 kills the thread without going through unmount.
182 Do not rename hardlinked files (since that should be a noop). Flush
183 cached write behind data when reopening a file after session abend,
184 except when already in write. Grab per socket sem during reconnect
185 to avoid oops in sendmsg if overlapping with reconnect. Do not
186 reset cached inode file size on readdir for files open for write on
192 Update number of blocks in file so du command is happier (in Linux a fake
193 blocksize of 512 is required for calculating number of blocks in inode).
194 Fix prepare write of partial pages to read in data from server if possible.
195 Fix race on tcpStatus field between unmount and reconnection code, causing
196 cifsd process sometimes to hang around forever. Improve out of memory
197 checks in cifs_filldir
201 Fix incorrect file size in file handle based setattr on big endian hardware.
202 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
203 and closing file structs in writepage/partialpagewrite. Add statistics
204 for each mounted share (new menuconfig option). Fix endianness problem in
205 volume information displayed in /proc/fs/cifs/DebugData (only affects
206 affects big endian architectures). Prevent renames while constructing
207 path names for open, mkdir and rmdir.
211 Change to mempools for alloc smb request buffers and multiplex structs
212 to better handle low memory problems (and potential deadlocks).
216 Fix incomplete listings of large directories on Samba servers when Unix
217 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
218 rename deadlock when writing out dirty pages at same time.
222 Fix open of files in which O_CREATE can cause the mode to change in
223 some cases. Fix case in which retry of write overlaps file close.
224 Fix PPC64 build error. Reduce excessive stack usage in smb password
225 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
229 Fixes for large file copy, signal handling, socket retry, buffer
230 allocation and low memory situations.
234 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
235 also now allowing support for specifying client netbiosname. NT4 support added.
239 Fix reconnection (and certain failed mounts) to properly wake up the
240 blocked users thread so it does not seem hung (in some cases was blocked
241 until the cifs receive timeout expired). Fix spurious error logging
242 to kernel log when application with open network files killed.
246 Fix /proc/fs module unload warning message (that could be logged
247 to the kernel log). Fix intermittent failure in connectathon
248 test7 (hardlink count not immediately refreshed in case in which
249 inode metadata can be incorrectly kept cached when time near zero)
253 Allow file_mode and dir_mode (specified at mount time) to be enforced
254 locally (the server already enforced its own ACLs too) for servers
255 that do not report the correct mode (do not support the
256 CIFS Unix Extensions).
260 Fix some small memory leaks in some unmount error paths. Fix major leak
261 of cache pages in readpages causing multiple read oriented stress
262 testcases (including fsx, and even large file copy) to fail over time.
266 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
267 This allows files that differ only in case and improves performance of file
268 creation and file open to such servers. Fix semaphore conflict which causes
269 slow delete of open file to Samba (which unfortunately can cause an oplock
270 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
274 fixes to cifs_readpages for fsx test case
278 Fix caching data integrity bug when extending file size especially when no
279 oplock on file. Fix spurious logging of valid already parsed mount options
280 that are parsed outside of the cifs vfs such as nosuid.
285 Connect to server when port number override not specified, and tcp port
286 unitialized. Reset search to restart at correct file when kernel routine
287 filldir returns error during large directory searches (readdir).
291 Fix caching problem when files opened by multiple clients in which
292 page cache could contain stale data, and write through did
293 not occur often enough while file was still open when read ahead
294 (read oplock) not allowed. Treat "sep=" when first mount option
295 as an override of comma as the default separator between mount
300 Allow passwords longer than 16 bytes. Allow null password string.
304 Gracefully clean up failed mounts when attempting to mount to servers such as
305 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
306 embedded commas in mount parsing of passwords.
310 Invalidate local inode cached pages on oplock break and when last file
311 instance is closed so that the client does not continue using stale local
312 copy rather than later modified server copy of file. Do not reconnect
313 when server drops the tcp session prematurely before negotiate
314 protocol response. Fix oops in reopen_file when dentry freed. Allow
315 the support for CIFS Unix Extensions to be disabled via proc interface.
319 Fix hang in commit_write during reconnection of open files under heavy load.
320 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
321 which also fixes any possible races when cifs signatures are enabled in SMBs
322 being sent out of signature sequence number order.
326 Fix byte range locking bug (endian problem) causing bad offset and
331 Fix oops (in send_sig) caused by CIFS unmount code trying to
332 wake up the demultiplex thread after it had exited. Do not log
333 error on harmless oplock release of closed handle.
337 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
338 Fix problem reconnecting secondary mounts to same server after session
339 failure. Fix invalid dentry - race in mkdir when directory gets created
340 by another client between the lookup and mkdir.
344 Fix to list processing in reopen_files. Fix reconnection when server hung
345 but tcpip session still alive. Set proper timeout on socket read.
349 Add missing mount options including iocharset. SMP fixes in write and open.
350 Fix errors in reconnecting after TCP session failure. Fix module unloading
351 of default nls codepage
355 Active smb transactions should never go negative (fix double FreeXid). Fix
356 list processing in file routines. Check return code on kmalloc in open.
357 Fix spinlock usage for SMP.
361 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
362 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
363 on create hard link when server does not support them.
367 Fix scheduling while atomic error in getting inode info on newly created file.
368 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
372 Fix oops on write to dead tcp session. Remove error log write for case when file open
373 O_CREAT but not O_EXCL
377 Fix non-POSIX behavior on rename of open file and delete of open file by taking
378 advantage of trans2 SetFileInfo rename facility if available on target server.
379 Retry on ENOSPC and EAGAIN socket errors.
383 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
384 allocation size miscalculation. After oplock token lost do not read through
389 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
393 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
394 during auto reconnection to server after server recovered from failure.
398 Finish support for Linux 2.5 open/create changes, which removes the
399 redundant NTCreate/QPathInfo/close that was sent during file create.
400 Enable oplock by default. Enable packet signing by default (needed to
401 access many recent Windows servers)
405 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
406 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
407 we will choose a cifs user session (smb uid) that better matches the local
408 uid if a) the mount uid does not match the current uid and b) we have another
409 session to the same server (ip address) for a different mount which
410 matches the current local uid.
414 Add support for mknod of block or character devices. Fix oplock
415 code (distributed caching) to properly send response to oplock
420 Finish up CIFS packet digital signing for the default
421 NTLM security case. This should help Windows 2003
422 network interoperability since it is common for
423 packet signing to be required now. Fix statfs (stat -f)
424 which recently started returning errors due to
425 invalid value (-1 instead of 0) being set in the
426 struct kstatfs f_ffiles field.
430 Fix oops on stopping oplock thread when removing cifs when
435 Fix mount options for ro (readonly), uid, gid and file and directory mode.
439 Fix errors displayed on failed mounts to be more understandable.
440 Fixed various incorrect or misleading smb to posix error code mappings.
444 Fix display of NTFS DFS junctions to display as symlinks.
445 They are the network equivalent. Fix oops in
446 cifs_partialpagewrite caused by missing spinlock protection
447 of openfile linked list. Allow writebehind caching errors to
448 be returned to the application at file close.
452 Clean up options displayed in /proc/mounts by show_options to
453 be more consistent with other filesystems.
457 Fix delete of readonly file to Windows servers. Reflect
458 presence or absence of read only dos attribute in mode
459 bits for servers that do not support CIFS Unix extensions.
460 Fix shortened results on readdir of large directories to
461 servers supporting CIFS Unix extensions (caused by
462 incorrect resume key).
466 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
470 unload nls if mount fails.
474 Add resume key support to search (readdir) code to workaround
475 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
476 allows disabling caching of attribute information for
481 Add more oplock handling (distributed caching code). Remove
482 dead code. Remove excessive stack space utilization from
487 Fix oops in get dfs referral (triggered when null path sent in to
488 mount). Add support for overriding rsize at mount time.
492 Fix buffer overrun in readdir which caused intermittent kernel oopses.
493 Fix writepage code to release kmap on write data. Allow "-ip=" new
494 mount option to be passed in on parameter distinct from the first part
495 (server name portion of) the UNC name. Allow override of the
496 tcp port of the target server via new mount option "-port="
500 Fix search handle leak on rewind. Fix setuid and gid so that they are
501 reflected in the local inode immediately. Cleanup of whitespace
502 to make 2.4 and 2.5 versions more consistent.
507 Fix signal sending so that captive thread (cifsd) exits on umount
508 (which was causing the warning in kmem_cache_free of the request buffers
509 at rmmod time). This had broken as a sideeffect of the recent global
510 kernel change to daemonize. Fix memory leak in readdir code which
511 showed up in "ls -R" (and applications that did search rewinding).
515 Reconnect tids and fids after session reconnection (still do not
516 reconnect byte range locks though). Fix problem caching
517 lookup information for directory inodes, improving performance,
518 especially in deep directory trees. Fix various build warnings.
522 Finish fixes to commit write for caching/readahead consistency. fsx
523 now works to Samba servers. Fix oops caused when readahead
524 was interrupted by a signal.
528 Fix data corruption (in partial page after truncate) that caused fsx to
529 fail to Windows servers. Cleaned up some extraneous error logging in
530 common error paths. Add generic sendfile support.
534 Fix memory leak in AllocMidQEntry.
535 Finish reconnection logic, so connection with server can be dropped
536 (or server rebooted) and the cifs client will reconnect.
540 Fix temporary socket leak when bad userid or password specified
541 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
542 over 16K to allow negotiation of up to Samba and Windows server default read
543 sizes. Add support for readpages
547 Fix oops when username not passed in on mount. Extensive fixes and improvements
548 to error logging (strip redundant newlines, change debug macros to ensure newline
549 passed in and to be more consistent). Fix writepage wrong file handle problem,
550 a readonly file handle could be incorrectly used to attempt to write out
551 file updates through the page cache to multiply open files. This could cause
552 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
553 shares to the same Windows server when using different usernames
554 (doing this to Samba servers worked but Windows was rejecting it) - now it is
555 possible to use different userids when connecting to the same server from a
556 Linux client. Fix oops when treeDisconnect called during unmount on
557 previously freed socket.
561 Fix oops in readpages caused by not setting address space operations in inode in
566 Includes support for deleting of open files and renaming over existing files (per POSIX
567 requirement). Add readlink support for Windows junction points (directory symlinks).
571 Changed read and write to go through pagecache. Added additional address space operations.
572 Memory mapped operations now working.
576 Added writepage code for additional memory mapping support. Fixed leak in xids causing
577 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
578 every stat call. Additional formatting cleanup.
582 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
586 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
587 Also included a modified version of his fix to protect global list manipulation of
588 the smb session and tree connection and mid related global variables.
592 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
593 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
594 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
598 More stylistic updates to better match kernel style. Add additional statistics
599 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
600 and CIFS Packet Signing enablement.
604 Replace call to sleep_on with safer wait_on_event.
605 Make stylistic changes to better match kernel style recommendations.
606 Remove most typedef usage (except for the PDUs themselves).
610 Update mount so the -unc mount option is no longer required (the ip address can be specified
611 in a UNC style device name. Implementation of readpage/writepage started.
615 Fix intermittent problem with incorrect smb header checking on badly
616 fragmented tcp responses
620 Fixes to setting of allocation size and file size.
624 Various 2.5.38 fixes. Now works on 2.5.38
628 Prepare for 2.5 kernel merge. Remove ifdefs.
632 Socket buffer management fixes. Fix dual free.
636 Various big endian fixes for hardlinks and symlinks and also for dfs.
640 Various big endian fixes for servers with Unix extensions such as Samba
644 Various FindNext fixes for incorrect filenames on large directory searches on big endian
645 clients. basic posix file i/o tests now work on big endian machines, not just le
649 SessionSetup and NegotiateProtocol now work from Big Endian machines.
650 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
651 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
655 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
656 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
660 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
661 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
662 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
663 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
667 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
668 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
672 Rewrote much of connection and mount/unmount logic to handle bugs with
673 multiple uses to same share, multiple users to same server etc.
677 Fixed major problem with dentry corruption (missing call to dput)
681 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
682 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
683 although corresponding function not fully implemented in the vfs yet
687 Fixed dentry caching bug, misc. cleanup
691 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
692 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
693 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
697 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
698 and tested against Samba 2.2.5
703 1) Fixed lockrange to be correct (it was one byte too short)
705 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
706 show range as locked when there is a conflict with an existing lock.
708 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
709 in most cases. Eventually will offer optional ability to query server for the correct perms.
711 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
712 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
715 4) Fixed error logging of valid mount options
717 5) Removed logging of password field.
719 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
720 and cleaned them up and made them more consistent with other cifs functions.
722 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
723 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
724 nor is the symlink support using the Unix extensions
726 8) Started adding the readlink and follow_link code
projects / karo-tx-linux.git / blob