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