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