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