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