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