3 Fix readdir caching when unlink removes file in current search buffer,
4 and this is followed by a rewind search to just before the deleted entry.
8 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
9 For these older servers, add option for passing netbios name of server in
10 on mount (servernetbiosname). Add suspend support for power management, to
11 avoid cifsd thread preventing software suspend from working.
12 Add mount option for disabling the default behavior of sending byte range lock
13 requests to the server (necessary for certain applications which break with
14 mandatory lock behavior such as Evolution), and also mount option for
15 requesting case insensitive matching for path based requests (requesting
16 case sensitive is the default).
20 Add writepage performance improvements. Fix path name conversions
21 for long filenames on mounts which were done with "mapchars" mount option
22 specified. Ensure multiplex ids do not collide. Fix case in which
23 rmmod can oops if done soon after last unmount. Fix truncated
24 search (readdir) output when resume filename was a long filename.
25 Fix filename conversion when mapchars mount option was specified and
26 filename was a long filename.
30 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
31 Do not oops if root user kills cifs oplock kernel thread or
32 kills the cifsd thread (NB: killing the cifs kernel threads is not
33 recommended, unmount and rmmod cifs will kill them when they are
34 no longer needed). Fix readdir to ASCII servers (ie older servers
35 which do not support Unicode) and also require asterisk.
36 Fix out of memory case in which data could be written one page
37 off in the page cache.
41 Fix caching problem, in which readdir of directory containing a file
42 which was cached could cause the file's time stamp to be updated
43 without invalidating the readahead data (so we could get stale
44 file data on the client for that file even as the server copy changed).
45 Cleanup response processing so cifsd can not loop when abnormally
51 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
52 transact response for an SMB request and search entry split across two frames.
53 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
54 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
55 unless server explicitly claims to support them in CIFS Unix extensions
56 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
57 different users from the same client to the same server. Fix oops in
58 cifs_close. Add mount option for remapping reserved characters in
59 filenames (also allow recognizing files with created by SFU which have any
60 of these seven reserved characters, except backslash, to be recognized).
61 Fix invalid transact2 message (we were sometimes trying to interpret
62 oplock breaks as SMB responses). Add ioctl for checking that the
63 current uid matches the uid of the mounter (needed by umount.cifs).
64 Reduce the number of large buffer allocations in cifs response processing
65 (significantly reduces memory pressure under heavy stress with multiple
66 processes accessing the same server at the same time).
70 Fix updates of DOS attributes and time fields so that files on NT4 servers
71 do not get marked delete on close. Display sizes of cifs buffer pools in
72 cifs stats. Fix oops in unmount when cifsd thread being killed by
73 shutdown. Add generic readv/writev and aio support. Report inode numbers
74 consistently in readdir and lookup (when serverino mount option is
75 specified use the inode number that the server reports - for both lookup
76 and readdir, otherwise by default the locally generated inode number is used
77 for inodes created in either path since servers are not always able to
78 provide unique inode numbers when exporting multiple volumes from under one
83 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
84 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
85 (mostly affects NT4 servers) by retry with handle based network operation.
86 Add new POSIX Query FS Info for returning statfs info more accurately.
87 Handle passwords with multiple commas in them.
91 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
92 Fix capabilities flags for large readx so as to allow reads larger than 64K.
96 Add module init parm for large SMB buffer size (to allow it to be changed
97 from its default of 16K) which is especially useful for large file copy
98 when mounting with the directio mount option. Fix oops after
99 returning from mount when experimental ExtendedSecurity enabled and
100 SpnegoNegotiated returning invalid error. Fix case to retry better when
101 peek returns from 1 to 3 bytes on socket which should have more data.
102 Fixed path based calls (such as cifs lookup) to handle path names
103 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
104 from Samba server to DC (Samba required dummy LM password).
108 Turn off DNOTIFY (directory change notification support) by default
109 (unless built with the experimental flag) to fix hang with KDE
110 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
111 waiting on an SMB response) in SendReceive when session dies but
112 reconnects quickly from another task. Add module init parms for
113 minimum number of large and small network buffers in the buffer pools,
114 and for the maximum number of simultaneous requests.
118 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
119 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
120 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
121 improperly zeroed buffer in CIFS Unix extensions set times call.
125 Fix internationalization problem in cifs readdir with filenames that map to
126 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
127 for readdir to netapp servers. Fix search rewind (seek into readdir to return
128 non-consecutive entries). Do not do readdir when server negotiates
129 buffer size to small to fit filename. Add support for reading POSIX ACLs from
130 the server (add also acl and noacl mount options).
134 Optionally allow using server side inode numbers, rather than client generated
135 ones by specifying mount option "serverino" - this is required for some apps
136 to work which double check hardlinked files and have persistent inode numbers.
140 Multiple bigendian fixes. On little endian systems (for reconnect after
141 network failure) fix tcp session reconnect code so we do not try first
142 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
143 as directories rather than symlinks because we can do follow link on them.
147 Add config option to enable XATTR (extended attribute) support, mapping
148 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
149 minor fixes pointed out by the Stanford SWAT checker (mostly missing
150 or out of order NULL pointer checks in little used error paths).
154 Add new mount parm to control whether mode check (generic_permission) is done
155 on the client. If Unix extensions are enabled and the uids on the client
156 and server do not match, client permission checks are meaningless on
157 server uids that do not exist on the client (this does not affect the
158 normal ACL check which occurs on the server). Fix default uid
159 on mknod to match create and mkdir. Add optional mount parm to allow
160 override of the default uid behavior (in which the server sets the uid
161 and gid of newly created files). Normally for network filesystem mounts
162 user want the server to set the uid/gid on newly created files (rather than
163 using uid of the client processes you would in a local filesystem).
167 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
168 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
169 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
170 (block/char/fifo) properly. Remove spurious mount warning log entry when
171 credentials passed as mount argument. Set major/minor device number in
172 inode for block and char devices when unix extensions enabled.
176 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
177 amounts of return data. Properly limit requests to MAX_REQ (50
178 is the usual maximum active multiplex SMB/CIFS requests per server).
179 Do not kill cifsd (and thus hurt the other SMB session) when more than one
180 session to the same server (but with different userids) exists and one
181 of the two user's smb sessions is being removed while leaving the other.
182 Do not loop reconnecting in cifsd demultiplex thread when admin
183 kills the thread without going through unmount.
187 Do not rename hardlinked files (since that should be a noop). Flush
188 cached write behind data when reopening a file after session abend,
189 except when already in write. Grab per socket sem during reconnect
190 to avoid oops in sendmsg if overlapping with reconnect. Do not
191 reset cached inode file size on readdir for files open for write on
197 Update number of blocks in file so du command is happier (in Linux a fake
198 blocksize of 512 is required for calculating number of blocks in inode).
199 Fix prepare write of partial pages to read in data from server if possible.
200 Fix race on tcpStatus field between unmount and reconnection code, causing
201 cifsd process sometimes to hang around forever. Improve out of memory
202 checks in cifs_filldir
206 Fix incorrect file size in file handle based setattr on big endian hardware.
207 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
208 and closing file structs in writepage/partialpagewrite. Add statistics
209 for each mounted share (new menuconfig option). Fix endianness problem in
210 volume information displayed in /proc/fs/cifs/DebugData (only affects
211 affects big endian architectures). Prevent renames while constructing
212 path names for open, mkdir and rmdir.
216 Change to mempools for alloc smb request buffers and multiplex structs
217 to better handle low memory problems (and potential deadlocks).
221 Fix incomplete listings of large directories on Samba servers when Unix
222 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
223 rename deadlock when writing out dirty pages at same time.
227 Fix open of files in which O_CREATE can cause the mode to change in
228 some cases. Fix case in which retry of write overlaps file close.
229 Fix PPC64 build error. Reduce excessive stack usage in smb password
230 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
234 Fixes for large file copy, signal handling, socket retry, buffer
235 allocation and low memory situations.
239 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
240 also now allowing support for specifying client netbiosname. NT4 support added.
244 Fix reconnection (and certain failed mounts) to properly wake up the
245 blocked users thread so it does not seem hung (in some cases was blocked
246 until the cifs receive timeout expired). Fix spurious error logging
247 to kernel log when application with open network files killed.
251 Fix /proc/fs module unload warning message (that could be logged
252 to the kernel log). Fix intermittent failure in connectathon
253 test7 (hardlink count not immediately refreshed in case in which
254 inode metadata can be incorrectly kept cached when time near zero)
258 Allow file_mode and dir_mode (specified at mount time) to be enforced
259 locally (the server already enforced its own ACLs too) for servers
260 that do not report the correct mode (do not support the
261 CIFS Unix Extensions).
265 Fix some small memory leaks in some unmount error paths. Fix major leak
266 of cache pages in readpages causing multiple read oriented stress
267 testcases (including fsx, and even large file copy) to fail over time.
271 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
272 This allows files that differ only in case and improves performance of file
273 creation and file open to such servers. Fix semaphore conflict which causes
274 slow delete of open file to Samba (which unfortunately can cause an oplock
275 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
279 fixes to cifs_readpages for fsx test case
283 Fix caching data integrity bug when extending file size especially when no
284 oplock on file. Fix spurious logging of valid already parsed mount options
285 that are parsed outside of the cifs vfs such as nosuid.
290 Connect to server when port number override not specified, and tcp port
291 unitialized. Reset search to restart at correct file when kernel routine
292 filldir returns error during large directory searches (readdir).
296 Fix caching problem when files opened by multiple clients in which
297 page cache could contain stale data, and write through did
298 not occur often enough while file was still open when read ahead
299 (read oplock) not allowed. Treat "sep=" when first mount option
300 as an override of comma as the default separator between mount
305 Allow passwords longer than 16 bytes. Allow null password string.
309 Gracefully clean up failed mounts when attempting to mount to servers such as
310 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
311 embedded commas in mount parsing of passwords.
315 Invalidate local inode cached pages on oplock break and when last file
316 instance is closed so that the client does not continue using stale local
317 copy rather than later modified server copy of file. Do not reconnect
318 when server drops the tcp session prematurely before negotiate
319 protocol response. Fix oops in reopen_file when dentry freed. Allow
320 the support for CIFS Unix Extensions to be disabled via proc interface.
324 Fix hang in commit_write during reconnection of open files under heavy load.
325 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
326 which also fixes any possible races when cifs signatures are enabled in SMBs
327 being sent out of signature sequence number order.
331 Fix byte range locking bug (endian problem) causing bad offset and
336 Fix oops (in send_sig) caused by CIFS unmount code trying to
337 wake up the demultiplex thread after it had exited. Do not log
338 error on harmless oplock release of closed handle.
342 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
343 Fix problem reconnecting secondary mounts to same server after session
344 failure. Fix invalid dentry - race in mkdir when directory gets created
345 by another client between the lookup and mkdir.
349 Fix to list processing in reopen_files. Fix reconnection when server hung
350 but tcpip session still alive. Set proper timeout on socket read.
354 Add missing mount options including iocharset. SMP fixes in write and open.
355 Fix errors in reconnecting after TCP session failure. Fix module unloading
356 of default nls codepage
360 Active smb transactions should never go negative (fix double FreeXid). Fix
361 list processing in file routines. Check return code on kmalloc in open.
362 Fix spinlock usage for SMP.
366 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
367 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
368 on create hard link when server does not support them.
372 Fix scheduling while atomic error in getting inode info on newly created file.
373 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
377 Fix oops on write to dead tcp session. Remove error log write for case when file open
378 O_CREAT but not O_EXCL
382 Fix non-POSIX behavior on rename of open file and delete of open file by taking
383 advantage of trans2 SetFileInfo rename facility if available on target server.
384 Retry on ENOSPC and EAGAIN socket errors.
388 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
389 allocation size miscalculation. After oplock token lost do not read through
394 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
398 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
399 during auto reconnection to server after server recovered from failure.
403 Finish support for Linux 2.5 open/create changes, which removes the
404 redundant NTCreate/QPathInfo/close that was sent during file create.
405 Enable oplock by default. Enable packet signing by default (needed to
406 access many recent Windows servers)
410 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
411 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
412 we will choose a cifs user session (smb uid) that better matches the local
413 uid if a) the mount uid does not match the current uid and b) we have another
414 session to the same server (ip address) for a different mount which
415 matches the current local uid.
419 Add support for mknod of block or character devices. Fix oplock
420 code (distributed caching) to properly send response to oplock
425 Finish up CIFS packet digital signing for the default
426 NTLM security case. This should help Windows 2003
427 network interoperability since it is common for
428 packet signing to be required now. Fix statfs (stat -f)
429 which recently started returning errors due to
430 invalid value (-1 instead of 0) being set in the
431 struct kstatfs f_ffiles field.
435 Fix oops on stopping oplock thread when removing cifs when
440 Fix mount options for ro (readonly), uid, gid and file and directory mode.
444 Fix errors displayed on failed mounts to be more understandable.
445 Fixed various incorrect or misleading smb to posix error code mappings.
449 Fix display of NTFS DFS junctions to display as symlinks.
450 They are the network equivalent. Fix oops in
451 cifs_partialpagewrite caused by missing spinlock protection
452 of openfile linked list. Allow writebehind caching errors to
453 be returned to the application at file close.
457 Clean up options displayed in /proc/mounts by show_options to
458 be more consistent with other filesystems.
462 Fix delete of readonly file to Windows servers. Reflect
463 presence or absence of read only dos attribute in mode
464 bits for servers that do not support CIFS Unix extensions.
465 Fix shortened results on readdir of large directories to
466 servers supporting CIFS Unix extensions (caused by
467 incorrect resume key).
471 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
475 unload nls if mount fails.
479 Add resume key support to search (readdir) code to workaround
480 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
481 allows disabling caching of attribute information for
486 Add more oplock handling (distributed caching code). Remove
487 dead code. Remove excessive stack space utilization from
492 Fix oops in get dfs referral (triggered when null path sent in to
493 mount). Add support for overriding rsize at mount time.
497 Fix buffer overrun in readdir which caused intermittent kernel oopses.
498 Fix writepage code to release kmap on write data. Allow "-ip=" new
499 mount option to be passed in on parameter distinct from the first part
500 (server name portion of) the UNC name. Allow override of the
501 tcp port of the target server via new mount option "-port="
505 Fix search handle leak on rewind. Fix setuid and gid so that they are
506 reflected in the local inode immediately. Cleanup of whitespace
507 to make 2.4 and 2.5 versions more consistent.
512 Fix signal sending so that captive thread (cifsd) exits on umount
513 (which was causing the warning in kmem_cache_free of the request buffers
514 at rmmod time). This had broken as a sideeffect of the recent global
515 kernel change to daemonize. Fix memory leak in readdir code which
516 showed up in "ls -R" (and applications that did search rewinding).
520 Reconnect tids and fids after session reconnection (still do not
521 reconnect byte range locks though). Fix problem caching
522 lookup information for directory inodes, improving performance,
523 especially in deep directory trees. Fix various build warnings.
527 Finish fixes to commit write for caching/readahead consistency. fsx
528 now works to Samba servers. Fix oops caused when readahead
529 was interrupted by a signal.
533 Fix data corruption (in partial page after truncate) that caused fsx to
534 fail to Windows servers. Cleaned up some extraneous error logging in
535 common error paths. Add generic sendfile support.
539 Fix memory leak in AllocMidQEntry.
540 Finish reconnection logic, so connection with server can be dropped
541 (or server rebooted) and the cifs client will reconnect.
545 Fix temporary socket leak when bad userid or password specified
546 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
547 over 16K to allow negotiation of up to Samba and Windows server default read
548 sizes. Add support for readpages
552 Fix oops when username not passed in on mount. Extensive fixes and improvements
553 to error logging (strip redundant newlines, change debug macros to ensure newline
554 passed in and to be more consistent). Fix writepage wrong file handle problem,
555 a readonly file handle could be incorrectly used to attempt to write out
556 file updates through the page cache to multiply open files. This could cause
557 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
558 shares to the same Windows server when using different usernames
559 (doing this to Samba servers worked but Windows was rejecting it) - now it is
560 possible to use different userids when connecting to the same server from a
561 Linux client. Fix oops when treeDisconnect called during unmount on
562 previously freed socket.
566 Fix oops in readpages caused by not setting address space operations in inode in
571 Includes support for deleting of open files and renaming over existing files (per POSIX
572 requirement). Add readlink support for Windows junction points (directory symlinks).
576 Changed read and write to go through pagecache. Added additional address space operations.
577 Memory mapped operations now working.
581 Added writepage code for additional memory mapping support. Fixed leak in xids causing
582 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
583 every stat call. Additional formatting cleanup.
587 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
591 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
592 Also included a modified version of his fix to protect global list manipulation of
593 the smb session and tree connection and mid related global variables.
597 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
598 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
599 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
603 More stylistic updates to better match kernel style. Add additional statistics
604 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
605 and CIFS Packet Signing enablement.
609 Replace call to sleep_on with safer wait_on_event.
610 Make stylistic changes to better match kernel style recommendations.
611 Remove most typedef usage (except for the PDUs themselves).
615 Update mount so the -unc mount option is no longer required (the ip address can be specified
616 in a UNC style device name. Implementation of readpage/writepage started.
620 Fix intermittent problem with incorrect smb header checking on badly
621 fragmented tcp responses
625 Fixes to setting of allocation size and file size.
629 Various 2.5.38 fixes. Now works on 2.5.38
633 Prepare for 2.5 kernel merge. Remove ifdefs.
637 Socket buffer management fixes. Fix dual free.
641 Various big endian fixes for hardlinks and symlinks and also for dfs.
645 Various big endian fixes for servers with Unix extensions such as Samba
649 Various FindNext fixes for incorrect filenames on large directory searches on big endian
650 clients. basic posix file i/o tests now work on big endian machines, not just le
654 SessionSetup and NegotiateProtocol now work from Big Endian machines.
655 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
656 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
660 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
661 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
665 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
666 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
667 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
668 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
672 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
673 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
677 Rewrote much of connection and mount/unmount logic to handle bugs with
678 multiple uses to same share, multiple users to same server etc.
682 Fixed major problem with dentry corruption (missing call to dput)
686 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
687 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
688 although corresponding function not fully implemented in the vfs yet
692 Fixed dentry caching bug, misc. cleanup
696 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
697 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
698 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
702 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
703 and tested against Samba 2.2.5
708 1) Fixed lockrange to be correct (it was one byte too short)
710 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
711 show range as locked when there is a conflict with an existing lock.
713 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
714 in most cases. Eventually will offer optional ability to query server for the correct perms.
716 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
717 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
720 4) Fixed error logging of valid mount options
722 5) Removed logging of password field.
724 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
725 and cleaned them up and made them more consistent with other cifs functions.
727 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
728 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
729 nor is the symlink support using the Unix extensions
731 8) Started adding the readlink and follow_link code
git://ftp.safe.ca / safe / jmp / linux-2.6 / blob