3 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
4 Do not oops if root user kills cifs oplock kernel thread or
5 kills the cifsd thread (NB: killing the cifs kernel threads is not
6 recommended, unmount and rmmod cifs will kill them when they are
7 no longer needed). Fix readdir to ASCII servers (ie older servers
8 which do not support Unicode) and also require asterik.
13 Fix caching problem, in which readdir of directory containing a file
14 which was cached could cause the file's time stamp to be updated
15 without invalidating the readahead data (so we could get stale
16 file data on the client for that file even as the server copy changed).
17 Cleanup response processing so cifsd can not loop when abnormally
23 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
24 transact response for an SMB request and search entry split across two frames.
25 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
26 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
27 unless server explicitly claims to support them in CIFS Unix extensions
28 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
29 different users from the same client to the same server. Fix oops in
30 cifs_close. Add mount option for remapping reserved characters in
31 filenames (also allow recognizing files with created by SFU which have any
32 of these seven reserved characters, except backslash, to be recognized).
33 Fix invalid transact2 message (we were sometimes trying to interpret
34 oplock breaks as SMB responses). Add ioctl for checking that the
35 current uid matches the uid of the mounter (needed by umount.cifs).
36 Reduce the number of large buffer allocations in cifs response processing
37 (significantly reduces memory pressure under heavy stress with multiple
38 processes accessing the same server at the same time).
42 Fix updates of DOS attributes and time fields so that files on NT4 servers
43 do not get marked delete on close. Display sizes of cifs buffer pools in
44 cifs stats. Fix oops in unmount when cifsd thread being killed by
45 shutdown. Add generic readv/writev and aio support. Report inode numbers
46 consistently in readdir and lookup (when serverino mount option is
47 specified use the inode number that the server reports - for both lookup
48 and readdir, otherwise by default the locally generated inode number is used
49 for inodes created in either path since servers are not always able to
50 provide unique inode numbers when exporting multiple volumes from under one
55 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
56 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
57 (mostly affects NT4 servers) by retry with handle based network operation.
58 Add new POSIX Query FS Info for returning statfs info more accurately.
59 Handle passwords with multiple commas in them.
63 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
64 Fix capabilities flags for large readx so as to allow reads larger than 64K.
68 Add module init parm for large SMB buffer size (to allow it to be changed
69 from its default of 16K) which is especially useful for large file copy
70 when mounting with the directio mount option. Fix oops after
71 returning from mount when experimental ExtendedSecurity enabled and
72 SpnegoNegotiated returning invalid error. Fix case to retry better when
73 peek returns from 1 to 3 bytes on socket which should have more data.
74 Fixed path based calls (such as cifs lookup) to handle path names
75 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
76 from Samba server to DC (Samba required dummy LM password).
80 Turn off DNOTIFY (directory change notification support) by default
81 (unless built with the experimental flag) to fix hang with KDE
82 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
83 waiting on an SMB response) in SendReceive when session dies but
84 reconnects quickly from another task. Add module init parms for
85 minimum number of large and small network buffers in the buffer pools,
86 and for the maximum number of simultaneous requests.
90 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
91 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
92 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
93 improperly zeroed buffer in CIFS Unix extensions set times call.
97 Fix internationlization problem in cifs readdir with filenames that map to
98 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
99 for readdir to netapp servers. Fix search rewind (seek into readdir to return
100 non-consecutive entries). Do not do readdir when server negotiates
101 buffer size to small to fit filename. Add support for reading POSIX ACLs from
102 the server (add also acl and noacl mount options).
106 Optionally allow using server side inode numbers, rather than client generated
107 ones by specifying mount option "serverino" - this is required for some apps
108 to work which double check hardlinked files and have persistent inode numbers.
112 Multiple bigendian fixes. On little endian systems (for reconnect after
113 network failure) fix tcp session reconnect code so we do not try first
114 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
115 as directories rather than symlinks because we can do follow link on them.
119 Add config option to enable XATTR (extended attribute) support, mapping
120 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
121 minor fixes pointed out by the Stanford SWAT checker (mostly missing
122 or out of order NULL pointer checks in little used error paths).
126 Add new mount parm to control whether mode check (generic_permission) is done
127 on the client. If Unix extensions are enabled and the uids on the client
128 and server do not match, client permission checks are meaningless on
129 server uids that do not exist on the client (this does not affect the
130 normal ACL check which occurs on the server). Fix default uid
131 on mknod to match create and mkdir. Add optional mount parm to allow
132 override of the default uid behavior (in which the server sets the uid
133 and gid of newly created files). Normally for network filesystem mounts
134 user want the server to set the uid/gid on newly created files (rather than
135 using uid of the client processes you would in a local filesystem).
139 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
140 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
141 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
142 (block/char/fifo) properly. Remove spurious mount warning log entry when
143 credentials passed as mount argument. Set major/minor device number in
144 inode for block and char devices when unix extensions enabled.
148 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
149 amounts of return data. Properly limit requests to MAX_REQ (50
150 is the usual maximum active multiplex SMB/CIFS requests per server).
151 Do not kill cifsd (and thus hurt the other SMB session) when more than one
152 session to the same server (but with different userids) exists and one
153 of the two user's smb sessions is being removed while leaving the other.
154 Do not loop reconnecting in cifsd demultiplex thread when admin
155 kills the thread without going through unmount.
159 Do not rename hardlinked files (since that should be a noop). Flush
160 cached write behind data when reopening a file after session abend,
161 except when already in write. Grab per socket sem during reconnect
162 to avoid oops in sendmsg if overlapping with reconnect. Do not
163 reset cached inode file size on readdir for files open for write on
169 Update number of blocks in file so du command is happier (in Linux a fake
170 blocksize of 512 is required for calculating number of blocks in inode).
171 Fix prepare write of partial pages to read in data from server if possible.
172 Fix race on tcpStatus field between unmount and reconnection code, causing
173 cifsd process sometimes to hang around forever. Improve out of memory
174 checks in cifs_filldir
178 Fix incorrect file size in file handle based setattr on big endian hardware.
179 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
180 and closing file structs in writepage/partialpagewrite. Add statistics
181 for each mounted share (new menuconfig option). Fix endianness problem in
182 volume information displayed in /proc/fs/cifs/DebugData (only affects
183 affects big endian architectures). Prevent renames while constructing
184 path names for open, mkdir and rmdir.
188 Change to mempools for alloc smb request buffers and multiplex structs
189 to better handle low memory problems (and potential deadlocks).
193 Fix incomplete listings of large directories on Samba servers when Unix
194 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
195 rename deadlock when writing out dirty pages at same time.
199 Fix open of files in which O_CREATE can cause the mode to change in
200 some cases. Fix case in which retry of write overlaps file close.
201 Fix PPC64 build error. Reduce excessive stack usage in smb password
202 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
206 Fixes for large file copy, signal handling, socket retry, buffer
207 allocation and low memory situations.
211 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
212 also now allowing support for specifying client netbiosname. NT4 support added.
216 Fix reconnection (and certain failed mounts) to properly wake up the
217 blocked users thread so it does not seem hung (in some cases was blocked
218 until the cifs receive timeout expired). Fix spurious error logging
219 to kernel log when application with open network files killed.
223 Fix /proc/fs module unload warning message (that could be logged
224 to the kernel log). Fix intermittent failure in connectathon
225 test7 (hardlink count not immediately refreshed in case in which
226 inode metadata can be incorrectly kept cached when time near zero)
230 Allow file_mode and dir_mode (specified at mount time) to be enforced
231 locally (the server already enforced its own ACLs too) for servers
232 that do not report the correct mode (do not support the
233 CIFS Unix Extensions).
237 Fix some small memory leaks in some unmount error paths. Fix major leak
238 of cache pages in readpages causing multiple read oriented stress
239 testcases (including fsx, and even large file copy) to fail over time.
243 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
244 This allows files that differ only in case and improves performance of file
245 creation and file open to such servers. Fix semaphore conflict which causes
246 slow delete of open file to Samba (which unfortunately can cause an oplock
247 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
251 fixes to cifs_readpages for fsx test case
255 Fix caching data integrity bug when extending file size especially when no
256 oplock on file. Fix spurious logging of valid already parsed mount options
257 that are parsed outside of the cifs vfs such as nosuid.
262 Connect to server when port number override not specified, and tcp port
263 unitialized. Reset search to restart at correct file when kernel routine
264 filldir returns error during large directory searches (readdir).
268 Fix caching problem when files opened by multiple clients in which
269 page cache could contain stale data, and write through did
270 not occur often enough while file was still open when read ahead
271 (read oplock) not allowed. Treat "sep=" when first mount option
272 as an overrride of comma as the default separator between mount
277 Allow passwords longer than 16 bytes. Allow null password string.
281 Gracefully clean up failed mounts when attempting to mount to servers such as
282 Windows 98 that terminate tcp sessions during prototocol negotiation. Handle
283 embedded commas in mount parsing of passwords.
287 Invalidate local inode cached pages on oplock break and when last file
288 instance is closed so that the client does not continue using stale local
289 copy rather than later modified server copy of file. Do not reconnect
290 when server drops the tcp session prematurely before negotiate
291 protocol response. Fix oops in roepen_file when dentry freed. Allow
292 the support for CIFS Unix Extensions to be disabled via proc interface.
296 Fix hang in commit_write during reconnection of open files under heavy load.
297 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
298 which also fixes any possible races when cifs signatures are enabled in SMBs
299 being sent out of signature sequence number order.
303 Fix byte range locking bug (endian problem) causing bad offset and
308 Fix oops (in send_sig) caused by CIFS unmount code trying to
309 wake up the demultiplex thread after it had exited. Do not log
310 error on harmless oplock release of closed handle.
314 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
315 Fix problem reconnecting secondary mounts to same server after session
316 failure. Fix invalid dentry - race in mkdir when directory gets created
317 by another client between the lookup and mkdir.
321 Fix to list processing in reopen_files. Fix reconnection when server hung
322 but tcpip session still alive. Set proper timeout on socket read.
326 Add missing mount options including iocharset. SMP fixes in write and open.
327 Fix errors in reconnecting after TCP session failure. Fix module unloading
328 of default nls codepage
332 Active smb transactions should never go negative (fix double FreeXid). Fix
333 list processing in file routines. Check return code on kmalloc in open.
334 Fix spinlock usage for SMP.
338 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
339 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
340 on create hard link when server does not support them.
344 Fix scheduling while atomic error in getting inode info on newly created file.
345 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
349 Fix oops on write to dead tcp session. Remove error log write for case when file open
350 O_CREAT but not O_EXCL
354 Fix non-POSIX behavior on rename of open file and delete of open file by taking
355 advantage of trans2 SetFileInfo rename facility if available on target server.
356 Retry on ENOSPC and EAGAIN socket errors.
360 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
361 allocation size miscalculation. After oplock token lost do not read through
366 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
370 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
371 during auto reconnection to server after server recovered from failure.
375 Finish support for Linux 2.5 open/create changes, which removes the
376 redundant NTCreate/QPathInfo/close that was sent during file create.
377 Enable oplock by default. Enable packet signing by default (needed to
378 access many recent Windows servers)
382 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
383 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
384 we will choose a cifs user session (smb uid) that better matches the local
385 uid if a) the mount uid does not match the current uid and b) we have another
386 session to the same server (ip address) for a different mount which
387 matches the current local uid.
391 Add support for mknod of block or character devices. Fix oplock
392 code (distributed caching) to properly send response to oplock
397 Finish up CIFS packet digital signing for the default
398 NTLM security case. This should help Windows 2003
399 network interoperability since it is common for
400 packet signing to be required now. Fix statfs (stat -f)
401 which recently started returning errors due to
402 invalid value (-1 instead of 0) being set in the
403 struct kstatfs f_ffiles field.
407 Fix oops on stopping oplock thread when removing cifs when
412 Fix mount options for ro (readonly), uid, gid and file and directory mode.
416 Fix errors displayed on failed mounts to be more understandable.
417 Fixed various incorrect or misleading smb to posix error code mappings.
421 Fix display of NTFS DFS junctions to display as symlinks.
422 They are the network equivalent. Fix oops in
423 cifs_partialpagewrite caused by missing spinlock protection
424 of openfile linked list. Allow writebehind caching errors to
425 be returned to the application at file close.
429 Clean up options displayed in /proc/mounts by show_options to
430 be more consistent with other filesystems.
434 Fix delete of readonly file to Windows servers. Reflect
435 presence or absence of read only dos attribute in mode
436 bits for servers that do not support CIFS Unix extensions.
437 Fix shortened results on readdir of large directories to
438 servers supporting CIFS Unix extensions (caused by
439 incorrect resume key).
443 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
447 unload nls if mount fails.
451 Add resume key support to search (readdir) code to workaround
452 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
453 allows disabling caching of attribute information for
458 Add more oplock handling (distributed caching code). Remove
459 dead code. Remove excessive stack space utilization from
464 Fix oops in get dfs referral (triggered when null path sent in to
465 mount). Add support for overriding rsize at mount time.
469 Fix buffer overrun in readdir which caused intermittent kernel oopses.
470 Fix writepage code to release kmap on write data. Allow "-ip=" new
471 mount option to be passed in on parameter distinct from the first part
472 (server name portion of) the UNC name. Allow override of the
473 tcp port of the target server via new mount option "-port="
477 Fix search handle leak on rewind. Fix setuid and gid so that they are
478 reflected in the local inode immediately. Cleanup of whitespace
479 to make 2.4 and 2.5 versions more consistent.
484 Fix signal sending so that captive thread (cifsd) exits on umount
485 (which was causing the warning in kmem_cache_free of the request buffers
486 at rmmod time). This had broken as a sideeffect of the recent global
487 kernel change to daemonize. Fix memory leak in readdir code which
488 showed up in "ls -R" (and applications that did search rewinding).
492 Reconnect tids and fids after session reconnection (still do not
493 reconnect byte range locks though). Fix problem caching
494 lookup information for directory inodes, improving performance,
495 especially in deep directory trees. Fix various build warnings.
499 Finish fixes to commit write for caching/readahead consistency. fsx
500 now works to Samba servers. Fix oops caused when readahead
501 was interrupted by a signal.
505 Fix data corruption (in partial page after truncate) that caused fsx to
506 fail to Windows servers. Cleaned up some extraneous error logging in
507 common error paths. Add generic sendfile support.
511 Fix memory leak in AllocMidQEntry.
512 Finish reconnection logic, so connection with server can be dropped
513 (or server rebooted) and the cifs client will reconnect.
517 Fix temporary socket leak when bad userid or password specified
518 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
519 over 16K to allow negotiation of up to Samba and Windows server default read
520 sizes. Add support for readpages
524 Fix oops when username not passed in on mount. Extensive fixes and improvements
525 to error logging (strip redundant newlines, change debug macros to ensure newline
526 passed in and to be more consistent). Fix writepage wrong file handle problem,
527 a readonly file handle could be incorrectly used to attempt to write out
528 file updates through the page cache to multiply open files. This could cause
529 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
530 shares to the same Windows server when using different usernames
531 (doing this to Samba servers worked but Windows was rejecting it) - now it is
532 possible to use different userids when connecting to the same server from a
533 Linux client. Fix oops when treeDisconnect called during unmount on
534 previously freed socket.
538 Fix oops in readpages caused by not setting address space operations in inode in
543 Includes support for deleting of open files and renaming over existing files (per POSIX
544 requirement). Add readlink support for Windows junction points (directory symlinks).
548 Changed read and write to go through pagecache. Added additional address space operations.
549 Memory mapped operations now working.
553 Added writepage code for additional memory mapping support. Fixed leak in xids causing
554 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
555 every stat call. Additional formatting cleanup.
559 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
563 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
564 Also included a modified version of his fix to protect global list manipulation of
565 the smb session and tree connection and mid related global variables.
569 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
570 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
571 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
575 More stylistic updates to better match kernel style. Add additional statistics
576 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
577 and CIFS Packet Signing enablement.
581 Replace call to sleep_on with safer wait_on_event.
582 Make stylistic changes to better match kernel style recommendations.
583 Remove most typedef usage (except for the PDUs themselves).
587 Update mount so the -unc mount option is no longer required (the ip address can be specified
588 in a UNC style device name. Implementation of readpage/writepage started.
592 Fix intermittent problem with incorrect smb header checking on badly
593 fragmented tcp responses
597 Fixes to setting of allocation size and file size.
601 Various 2.5.38 fixes. Now works on 2.5.38
605 Prepare for 2.5 kernel merge. Remove ifdefs.
609 Socket buffer management fixes. Fix dual free.
613 Various big endian fixes for hardlinks and symlinks and also for dfs.
617 Various big endian fixes for servers with Unix extensions such as Samba
621 Various FindNext fixes for incorrect filenames on large directory searches on big endian
622 clients. basic posix file i/o tests now work on big endian machines, not just le
626 SessionSetup and NegotiateProtocol now work from Big Endian machines.
627 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
628 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
632 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
633 files now return the correct rumber of links on fstat as they are repeatedly linked and unlinked.
637 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
638 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
639 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
640 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
644 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
645 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
649 Rewrote much of connection and mount/unmount logic to handle bugs with
650 multiple uses to same share, multiple users to same server etc.
654 Fixed major problem with dentry corruption (missing call to dput)
658 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
659 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
660 although corresponding function not fully implemented in the vfs yet
664 Fixed dentry caching bug, misc. cleanup
668 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
669 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
670 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
674 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
675 and tested against Samba 2.2.5
680 1) Fixed lockrange to be correct (it was one byte too short)
682 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
683 show range as locked when there is a conflict with an existing lock.
685 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
686 in most cases. Eventually will offer optional ability to query server for the correct perms.
688 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
689 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
692 4) Fixed error logging of valid mount options
694 5) Removed logging of password field.
696 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
697 and cleaned them up and made them more consistent with other cifs functions.
699 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
700 (with or without Unix exentions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
701 nor is the symlink support using the Unix extensions
703 8) Started adding the readlink and follow_link code
projects / linux-2.6 / blob