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