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).
7 Cleanup response processing so cifsd can not loop when abnormally
13 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
14 transact response for an SMB request and search entry split across two frames.
15 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
16 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
17 unless server explicitly claims to support them in CIFS Unix extensions
18 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
19 different users from the same client to the same server. Fix oops in
20 cifs_close. Add mount option for remapping reserved characters in
21 filenames (also allow recognizing files with created by SFU which have any
22 of these seven reserved characters, except backslash, to be recognized).
23 Fix invalid transact2 message (we were sometimes trying to interpret
24 oplock breaks as SMB responses). Add ioctl for checking that the
25 current uid matches the uid of the mounter (needed by umount.cifs).
26 Reduce the number of large buffer allocations in cifs response processing
27 (significantly reduces memory pressure under heavy stress with multiple
28 processes accessing the same server at the same time).
32 Fix updates of DOS attributes and time fields so that files on NT4 servers
33 do not get marked delete on close. Display sizes of cifs buffer pools in
34 cifs stats. Fix oops in unmount when cifsd thread being killed by
35 shutdown. Add generic readv/writev and aio support. Report inode numbers
36 consistently in readdir and lookup (when serverino mount option is
37 specified use the inode number that the server reports - for both lookup
38 and readdir, otherwise by default the locally generated inode number is used
39 for inodes created in either path since servers are not always able to
40 provide unique inode numbers when exporting multiple volumes from under one
45 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
46 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
47 (mostly affects NT4 servers) by retry with handle based network operation.
48 Add new POSIX Query FS Info for returning statfs info more accurately.
49 Handle passwords with multiple commas in them.
53 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
54 Fix capabilities flags for large readx so as to allow reads larger than 64K.
58 Add module init parm for large SMB buffer size (to allow it to be changed
59 from its default of 16K) which is especially useful for large file copy
60 when mounting with the directio mount option. Fix oops after
61 returning from mount when experimental ExtendedSecurity enabled and
62 SpnegoNegotiated returning invalid error. Fix case to retry better when
63 peek returns from 1 to 3 bytes on socket which should have more data.
64 Fixed path based calls (such as cifs lookup) to handle path names
65 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
66 from Samba server to DC (Samba required dummy LM password).
70 Turn off DNOTIFY (directory change notification support) by default
71 (unless built with the experimental flag) to fix hang with KDE
72 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
73 waiting on an SMB response) in SendReceive when session dies but
74 reconnects quickly from another task. Add module init parms for
75 minimum number of large and small network buffers in the buffer pools,
76 and for the maximum number of simultaneous requests.
80 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
81 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
82 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
83 improperly zeroed buffer in CIFS Unix extensions set times call.
87 Fix internationlization problem in cifs readdir with filenames that map to
88 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
89 for readdir to netapp servers. Fix search rewind (seek into readdir to return
90 non-consecutive entries). Do not do readdir when server negotiates
91 buffer size to small to fit filename. Add support for reading POSIX ACLs from
92 the server (add also acl and noacl mount options).
96 Optionally allow using server side inode numbers, rather than client generated
97 ones by specifying mount option "serverino" - this is required for some apps
98 to work which double check hardlinked files and have persistent inode numbers.
102 Multiple bigendian fixes. On little endian systems (for reconnect after
103 network failure) fix tcp session reconnect code so we do not try first
104 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
105 as directories rather than symlinks because we can do follow link on them.
109 Add config option to enable XATTR (extended attribute) support, mapping
110 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
111 minor fixes pointed out by the Stanford SWAT checker (mostly missing
112 or out of order NULL pointer checks in little used error paths).
116 Add new mount parm to control whether mode check (generic_permission) is done
117 on the client. If Unix extensions are enabled and the uids on the client
118 and server do not match, client permission checks are meaningless on
119 server uids that do not exist on the client (this does not affect the
120 normal ACL check which occurs on the server). Fix default uid
121 on mknod to match create and mkdir. Add optional mount parm to allow
122 override of the default uid behavior (in which the server sets the uid
123 and gid of newly created files). Normally for network filesystem mounts
124 user want the server to set the uid/gid on newly created files (rather than
125 using uid of the client processes you would in a local filesystem).
129 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
130 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
131 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
132 (block/char/fifo) properly. Remove spurious mount warning log entry when
133 credentials passed as mount argument. Set major/minor device number in
134 inode for block and char devices when unix extensions enabled.
138 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
139 amounts of return data. Properly limit requests to MAX_REQ (50
140 is the usual maximum active multiplex SMB/CIFS requests per server).
141 Do not kill cifsd (and thus hurt the other SMB session) when more than one
142 session to the same server (but with different userids) exists and one
143 of the two user's smb sessions is being removed while leaving the other.
144 Do not loop reconnecting in cifsd demultiplex thread when admin
145 kills the thread without going through unmount.
149 Do not rename hardlinked files (since that should be a noop). Flush
150 cached write behind data when reopening a file after session abend,
151 except when already in write. Grab per socket sem during reconnect
152 to avoid oops in sendmsg if overlapping with reconnect. Do not
153 reset cached inode file size on readdir for files open for write on
159 Update number of blocks in file so du command is happier (in Linux a fake
160 blocksize of 512 is required for calculating number of blocks in inode).
161 Fix prepare write of partial pages to read in data from server if possible.
162 Fix race on tcpStatus field between unmount and reconnection code, causing
163 cifsd process sometimes to hang around forever. Improve out of memory
164 checks in cifs_filldir
168 Fix incorrect file size in file handle based setattr on big endian hardware.
169 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
170 and closing file structs in writepage/partialpagewrite. Add statistics
171 for each mounted share (new menuconfig option). Fix endianness problem in
172 volume information displayed in /proc/fs/cifs/DebugData (only affects
173 affects big endian architectures). Prevent renames while constructing
174 path names for open, mkdir and rmdir.
178 Change to mempools for alloc smb request buffers and multiplex structs
179 to better handle low memory problems (and potential deadlocks).
183 Fix incomplete listings of large directories on Samba servers when Unix
184 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
185 rename deadlock when writing out dirty pages at same time.
189 Fix open of files in which O_CREATE can cause the mode to change in
190 some cases. Fix case in which retry of write overlaps file close.
191 Fix PPC64 build error. Reduce excessive stack usage in smb password
192 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
196 Fixes for large file copy, signal handling, socket retry, buffer
197 allocation and low memory situations.
201 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
202 also now allowing support for specifying client netbiosname. NT4 support added.
206 Fix reconnection (and certain failed mounts) to properly wake up the
207 blocked users thread so it does not seem hung (in some cases was blocked
208 until the cifs receive timeout expired). Fix spurious error logging
209 to kernel log when application with open network files killed.
213 Fix /proc/fs module unload warning message (that could be logged
214 to the kernel log). Fix intermittent failure in connectathon
215 test7 (hardlink count not immediately refreshed in case in which
216 inode metadata can be incorrectly kept cached when time near zero)
220 Allow file_mode and dir_mode (specified at mount time) to be enforced
221 locally (the server already enforced its own ACLs too) for servers
222 that do not report the correct mode (do not support the
223 CIFS Unix Extensions).
227 Fix some small memory leaks in some unmount error paths. Fix major leak
228 of cache pages in readpages causing multiple read oriented stress
229 testcases (including fsx, and even large file copy) to fail over time.
233 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
234 This allows files that differ only in case and improves performance of file
235 creation and file open to such servers. Fix semaphore conflict which causes
236 slow delete of open file to Samba (which unfortunately can cause an oplock
237 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
241 fixes to cifs_readpages for fsx test case
245 Fix caching data integrity bug when extending file size especially when no
246 oplock on file. Fix spurious logging of valid already parsed mount options
247 that are parsed outside of the cifs vfs such as nosuid.
252 Connect to server when port number override not specified, and tcp port
253 unitialized. Reset search to restart at correct file when kernel routine
254 filldir returns error during large directory searches (readdir).
258 Fix caching problem when files opened by multiple clients in which
259 page cache could contain stale data, and write through did
260 not occur often enough while file was still open when read ahead
261 (read oplock) not allowed. Treat "sep=" when first mount option
262 as an overrride of comma as the default separator between mount
267 Allow passwords longer than 16 bytes. Allow null password string.
271 Gracefully clean up failed mounts when attempting to mount to servers such as
272 Windows 98 that terminate tcp sessions during prototocol negotiation. Handle
273 embedded commas in mount parsing of passwords.
277 Invalidate local inode cached pages on oplock break and when last file
278 instance is closed so that the client does not continue using stale local
279 copy rather than later modified server copy of file. Do not reconnect
280 when server drops the tcp session prematurely before negotiate
281 protocol response. Fix oops in roepen_file when dentry freed. Allow
282 the support for CIFS Unix Extensions to be disabled via proc interface.
286 Fix hang in commit_write during reconnection of open files under heavy load.
287 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
288 which also fixes any possible races when cifs signatures are enabled in SMBs
289 being sent out of signature sequence number order.
293 Fix byte range locking bug (endian problem) causing bad offset and
298 Fix oops (in send_sig) caused by CIFS unmount code trying to
299 wake up the demultiplex thread after it had exited. Do not log
300 error on harmless oplock release of closed handle.
304 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
305 Fix problem reconnecting secondary mounts to same server after session
306 failure. Fix invalid dentry - race in mkdir when directory gets created
307 by another client between the lookup and mkdir.
311 Fix to list processing in reopen_files. Fix reconnection when server hung
312 but tcpip session still alive. Set proper timeout on socket read.
316 Add missing mount options including iocharset. SMP fixes in write and open.
317 Fix errors in reconnecting after TCP session failure. Fix module unloading
318 of default nls codepage
322 Active smb transactions should never go negative (fix double FreeXid). Fix
323 list processing in file routines. Check return code on kmalloc in open.
324 Fix spinlock usage for SMP.
328 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
329 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
330 on create hard link when server does not support them.
334 Fix scheduling while atomic error in getting inode info on newly created file.
335 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
339 Fix oops on write to dead tcp session. Remove error log write for case when file open
340 O_CREAT but not O_EXCL
344 Fix non-POSIX behavior on rename of open file and delete of open file by taking
345 advantage of trans2 SetFileInfo rename facility if available on target server.
346 Retry on ENOSPC and EAGAIN socket errors.
350 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
351 allocation size miscalculation. After oplock token lost do not read through
356 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
360 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
361 during auto reconnection to server after server recovered from failure.
365 Finish support for Linux 2.5 open/create changes, which removes the
366 redundant NTCreate/QPathInfo/close that was sent during file create.
367 Enable oplock by default. Enable packet signing by default (needed to
368 access many recent Windows servers)
372 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
373 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
374 we will choose a cifs user session (smb uid) that better matches the local
375 uid if a) the mount uid does not match the current uid and b) we have another
376 session to the same server (ip address) for a different mount which
377 matches the current local uid.
381 Add support for mknod of block or character devices. Fix oplock
382 code (distributed caching) to properly send response to oplock
387 Finish up CIFS packet digital signing for the default
388 NTLM security case. This should help Windows 2003
389 network interoperability since it is common for
390 packet signing to be required now. Fix statfs (stat -f)
391 which recently started returning errors due to
392 invalid value (-1 instead of 0) being set in the
393 struct kstatfs f_ffiles field.
397 Fix oops on stopping oplock thread when removing cifs when
402 Fix mount options for ro (readonly), uid, gid and file and directory mode.
406 Fix errors displayed on failed mounts to be more understandable.
407 Fixed various incorrect or misleading smb to posix error code mappings.
411 Fix display of NTFS DFS junctions to display as symlinks.
412 They are the network equivalent. Fix oops in
413 cifs_partialpagewrite caused by missing spinlock protection
414 of openfile linked list. Allow writebehind caching errors to
415 be returned to the application at file close.
419 Clean up options displayed in /proc/mounts by show_options to
420 be more consistent with other filesystems.
424 Fix delete of readonly file to Windows servers. Reflect
425 presence or absence of read only dos attribute in mode
426 bits for servers that do not support CIFS Unix extensions.
427 Fix shortened results on readdir of large directories to
428 servers supporting CIFS Unix extensions (caused by
429 incorrect resume key).
433 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
437 unload nls if mount fails.
441 Add resume key support to search (readdir) code to workaround
442 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
443 allows disabling caching of attribute information for
448 Add more oplock handling (distributed caching code). Remove
449 dead code. Remove excessive stack space utilization from
454 Fix oops in get dfs referral (triggered when null path sent in to
455 mount). Add support for overriding rsize at mount time.
459 Fix buffer overrun in readdir which caused intermittent kernel oopses.
460 Fix writepage code to release kmap on write data. Allow "-ip=" new
461 mount option to be passed in on parameter distinct from the first part
462 (server name portion of) the UNC name. Allow override of the
463 tcp port of the target server via new mount option "-port="
467 Fix search handle leak on rewind. Fix setuid and gid so that they are
468 reflected in the local inode immediately. Cleanup of whitespace
469 to make 2.4 and 2.5 versions more consistent.
474 Fix signal sending so that captive thread (cifsd) exits on umount
475 (which was causing the warning in kmem_cache_free of the request buffers
476 at rmmod time). This had broken as a sideeffect of the recent global
477 kernel change to daemonize. Fix memory leak in readdir code which
478 showed up in "ls -R" (and applications that did search rewinding).
482 Reconnect tids and fids after session reconnection (still do not
483 reconnect byte range locks though). Fix problem caching
484 lookup information for directory inodes, improving performance,
485 especially in deep directory trees. Fix various build warnings.
489 Finish fixes to commit write for caching/readahead consistency. fsx
490 now works to Samba servers. Fix oops caused when readahead
491 was interrupted by a signal.
495 Fix data corruption (in partial page after truncate) that caused fsx to
496 fail to Windows servers. Cleaned up some extraneous error logging in
497 common error paths. Add generic sendfile support.
501 Fix memory leak in AllocMidQEntry.
502 Finish reconnection logic, so connection with server can be dropped
503 (or server rebooted) and the cifs client will reconnect.
507 Fix temporary socket leak when bad userid or password specified
508 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
509 over 16K to allow negotiation of up to Samba and Windows server default read
510 sizes. Add support for readpages
514 Fix oops when username not passed in on mount. Extensive fixes and improvements
515 to error logging (strip redundant newlines, change debug macros to ensure newline
516 passed in and to be more consistent). Fix writepage wrong file handle problem,
517 a readonly file handle could be incorrectly used to attempt to write out
518 file updates through the page cache to multiply open files. This could cause
519 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
520 shares to the same Windows server when using different usernames
521 (doing this to Samba servers worked but Windows was rejecting it) - now it is
522 possible to use different userids when connecting to the same server from a
523 Linux client. Fix oops when treeDisconnect called during unmount on
524 previously freed socket.
528 Fix oops in readpages caused by not setting address space operations in inode in
533 Includes support for deleting of open files and renaming over existing files (per POSIX
534 requirement). Add readlink support for Windows junction points (directory symlinks).
538 Changed read and write to go through pagecache. Added additional address space operations.
539 Memory mapped operations now working.
543 Added writepage code for additional memory mapping support. Fixed leak in xids causing
544 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
545 every stat call. Additional formatting cleanup.
549 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
553 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
554 Also included a modified version of his fix to protect global list manipulation of
555 the smb session and tree connection and mid related global variables.
559 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
560 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
561 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
565 More stylistic updates to better match kernel style. Add additional statistics
566 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
567 and CIFS Packet Signing enablement.
571 Replace call to sleep_on with safer wait_on_event.
572 Make stylistic changes to better match kernel style recommendations.
573 Remove most typedef usage (except for the PDUs themselves).
577 Update mount so the -unc mount option is no longer required (the ip address can be specified
578 in a UNC style device name. Implementation of readpage/writepage started.
582 Fix intermittent problem with incorrect smb header checking on badly
583 fragmented tcp responses
587 Fixes to setting of allocation size and file size.
591 Various 2.5.38 fixes. Now works on 2.5.38
595 Prepare for 2.5 kernel merge. Remove ifdefs.
599 Socket buffer management fixes. Fix dual free.
603 Various big endian fixes for hardlinks and symlinks and also for dfs.
607 Various big endian fixes for servers with Unix extensions such as Samba
611 Various FindNext fixes for incorrect filenames on large directory searches on big endian
612 clients. basic posix file i/o tests now work on big endian machines, not just le
616 SessionSetup and NegotiateProtocol now work from Big Endian machines.
617 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
618 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
622 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
623 files now return the correct rumber of links on fstat as they are repeatedly linked and unlinked.
627 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
628 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
629 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
630 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
634 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
635 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
639 Rewrote much of connection and mount/unmount logic to handle bugs with
640 multiple uses to same share, multiple users to same server etc.
644 Fixed major problem with dentry corruption (missing call to dput)
648 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
649 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
650 although corresponding function not fully implemented in the vfs yet
654 Fixed dentry caching bug, misc. cleanup
658 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
659 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
660 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
664 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
665 and tested against Samba 2.2.5
670 1) Fixed lockrange to be correct (it was one byte too short)
672 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
673 show range as locked when there is a conflict with an existing lock.
675 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
676 in most cases. Eventually will offer optional ability to query server for the correct perms.
678 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
679 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
682 4) Fixed error logging of valid mount options
684 5) Removed logging of password field.
686 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
687 and cleaned them up and made them more consistent with other cifs functions.
689 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
690 (with or without Unix exentions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
691 nor is the symlink support using the Unix extensions
693 8) Started adding the readlink and follow_link code
projects / mirror_ubuntu-artful-kernel.git / blob