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
11 Fix caching problem, in which readdir of directory containing a file
12 which was cached could cause the file's time stamp to be updated
13 without invalidating the readahead data (so we could get stale
14 file data on the client for that file even as the server copy changed).
15 Cleanup response processing so cifsd can not loop when abnormally
21 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
22 transact response for an SMB request and search entry split across two frames.
23 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
24 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
25 unless server explicitly claims to support them in CIFS Unix extensions
26 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
27 different users from the same client to the same server. Fix oops in
28 cifs_close. Add mount option for remapping reserved characters in
29 filenames (also allow recognizing files with created by SFU which have any
30 of these seven reserved characters, except backslash, to be recognized).
31 Fix invalid transact2 message (we were sometimes trying to interpret
32 oplock breaks as SMB responses). Add ioctl for checking that the
33 current uid matches the uid of the mounter (needed by umount.cifs).
34 Reduce the number of large buffer allocations in cifs response processing
35 (significantly reduces memory pressure under heavy stress with multiple
36 processes accessing the same server at the same time).
40 Fix updates of DOS attributes and time fields so that files on NT4 servers
41 do not get marked delete on close. Display sizes of cifs buffer pools in
42 cifs stats. Fix oops in unmount when cifsd thread being killed by
43 shutdown. Add generic readv/writev and aio support. Report inode numbers
44 consistently in readdir and lookup (when serverino mount option is
45 specified use the inode number that the server reports - for both lookup
46 and readdir, otherwise by default the locally generated inode number is used
47 for inodes created in either path since servers are not always able to
48 provide unique inode numbers when exporting multiple volumes from under one
53 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
54 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
55 (mostly affects NT4 servers) by retry with handle based network operation.
56 Add new POSIX Query FS Info for returning statfs info more accurately.
57 Handle passwords with multiple commas in them.
61 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
62 Fix capabilities flags for large readx so as to allow reads larger than 64K.
66 Add module init parm for large SMB buffer size (to allow it to be changed
67 from its default of 16K) which is especially useful for large file copy
68 when mounting with the directio mount option. Fix oops after
69 returning from mount when experimental ExtendedSecurity enabled and
70 SpnegoNegotiated returning invalid error. Fix case to retry better when
71 peek returns from 1 to 3 bytes on socket which should have more data.
72 Fixed path based calls (such as cifs lookup) to handle path names
73 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
74 from Samba server to DC (Samba required dummy LM password).
78 Turn off DNOTIFY (directory change notification support) by default
79 (unless built with the experimental flag) to fix hang with KDE
80 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
81 waiting on an SMB response) in SendReceive when session dies but
82 reconnects quickly from another task. Add module init parms for
83 minimum number of large and small network buffers in the buffer pools,
84 and for the maximum number of simultaneous requests.
88 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
89 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
90 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
91 improperly zeroed buffer in CIFS Unix extensions set times call.
95 Fix internationlization problem in cifs readdir with filenames that map to
96 longer UTF8 strings than the string on the wire was in Unicode. Add workaround
97 for readdir to netapp servers. Fix search rewind (seek into readdir to return
98 non-consecutive entries). Do not do readdir when server negotiates
99 buffer size to small to fit filename. Add support for reading POSIX ACLs from
100 the server (add also acl and noacl mount options).
104 Optionally allow using server side inode numbers, rather than client generated
105 ones by specifying mount option "serverino" - this is required for some apps
106 to work which double check hardlinked files and have persistent inode numbers.
110 Multiple bigendian fixes. On little endian systems (for reconnect after
111 network failure) fix tcp session reconnect code so we do not try first
112 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
113 as directories rather than symlinks because we can do follow link on them.
117 Add config option to enable XATTR (extended attribute) support, mapping
118 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
119 minor fixes pointed out by the Stanford SWAT checker (mostly missing
120 or out of order NULL pointer checks in little used error paths).
124 Add new mount parm to control whether mode check (generic_permission) is done
125 on the client. If Unix extensions are enabled and the uids on the client
126 and server do not match, client permission checks are meaningless on
127 server uids that do not exist on the client (this does not affect the
128 normal ACL check which occurs on the server). Fix default uid
129 on mknod to match create and mkdir. Add optional mount parm to allow
130 override of the default uid behavior (in which the server sets the uid
131 and gid of newly created files). Normally for network filesystem mounts
132 user want the server to set the uid/gid on newly created files (rather than
133 using uid of the client processes you would in a local filesystem).
137 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
138 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
139 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
140 (block/char/fifo) properly. Remove spurious mount warning log entry when
141 credentials passed as mount argument. Set major/minor device number in
142 inode for block and char devices when unix extensions enabled.
146 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
147 amounts of return data. Properly limit requests to MAX_REQ (50
148 is the usual maximum active multiplex SMB/CIFS requests per server).
149 Do not kill cifsd (and thus hurt the other SMB session) when more than one
150 session to the same server (but with different userids) exists and one
151 of the two user's smb sessions is being removed while leaving the other.
152 Do not loop reconnecting in cifsd demultiplex thread when admin
153 kills the thread without going through unmount.
157 Do not rename hardlinked files (since that should be a noop). Flush
158 cached write behind data when reopening a file after session abend,
159 except when already in write. Grab per socket sem during reconnect
160 to avoid oops in sendmsg if overlapping with reconnect. Do not
161 reset cached inode file size on readdir for files open for write on
167 Update number of blocks in file so du command is happier (in Linux a fake
168 blocksize of 512 is required for calculating number of blocks in inode).
169 Fix prepare write of partial pages to read in data from server if possible.
170 Fix race on tcpStatus field between unmount and reconnection code, causing
171 cifsd process sometimes to hang around forever. Improve out of memory
172 checks in cifs_filldir
176 Fix incorrect file size in file handle based setattr on big endian hardware.
177 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
178 and closing file structs in writepage/partialpagewrite. Add statistics
179 for each mounted share (new menuconfig option). Fix endianness problem in
180 volume information displayed in /proc/fs/cifs/DebugData (only affects
181 affects big endian architectures). Prevent renames while constructing
182 path names for open, mkdir and rmdir.
186 Change to mempools for alloc smb request buffers and multiplex structs
187 to better handle low memory problems (and potential deadlocks).
191 Fix incomplete listings of large directories on Samba servers when Unix
192 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
193 rename deadlock when writing out dirty pages at same time.
197 Fix open of files in which O_CREATE can cause the mode to change in
198 some cases. Fix case in which retry of write overlaps file close.
199 Fix PPC64 build error. Reduce excessive stack usage in smb password
200 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
204 Fixes for large file copy, signal handling, socket retry, buffer
205 allocation and low memory situations.
209 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
210 also now allowing support for specifying client netbiosname. NT4 support added.
214 Fix reconnection (and certain failed mounts) to properly wake up the
215 blocked users thread so it does not seem hung (in some cases was blocked
216 until the cifs receive timeout expired). Fix spurious error logging
217 to kernel log when application with open network files killed.
221 Fix /proc/fs module unload warning message (that could be logged
222 to the kernel log). Fix intermittent failure in connectathon
223 test7 (hardlink count not immediately refreshed in case in which
224 inode metadata can be incorrectly kept cached when time near zero)
228 Allow file_mode and dir_mode (specified at mount time) to be enforced
229 locally (the server already enforced its own ACLs too) for servers
230 that do not report the correct mode (do not support the
231 CIFS Unix Extensions).
235 Fix some small memory leaks in some unmount error paths. Fix major leak
236 of cache pages in readpages causing multiple read oriented stress
237 testcases (including fsx, and even large file copy) to fail over time.
241 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
242 This allows files that differ only in case and improves performance of file
243 creation and file open to such servers. Fix semaphore conflict which causes
244 slow delete of open file to Samba (which unfortunately can cause an oplock
245 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
249 fixes to cifs_readpages for fsx test case
253 Fix caching data integrity bug when extending file size especially when no
254 oplock on file. Fix spurious logging of valid already parsed mount options
255 that are parsed outside of the cifs vfs such as nosuid.
260 Connect to server when port number override not specified, and tcp port
261 unitialized. Reset search to restart at correct file when kernel routine
262 filldir returns error during large directory searches (readdir).
266 Fix caching problem when files opened by multiple clients in which
267 page cache could contain stale data, and write through did
268 not occur often enough while file was still open when read ahead
269 (read oplock) not allowed. Treat "sep=" when first mount option
270 as an overrride of comma as the default separator between mount
275 Allow passwords longer than 16 bytes. Allow null password string.
279 Gracefully clean up failed mounts when attempting to mount to servers such as
280 Windows 98 that terminate tcp sessions during prototocol negotiation. Handle
281 embedded commas in mount parsing of passwords.
285 Invalidate local inode cached pages on oplock break and when last file
286 instance is closed so that the client does not continue using stale local
287 copy rather than later modified server copy of file. Do not reconnect
288 when server drops the tcp session prematurely before negotiate
289 protocol response. Fix oops in roepen_file when dentry freed. Allow
290 the support for CIFS Unix Extensions to be disabled via proc interface.
294 Fix hang in commit_write during reconnection of open files under heavy load.
295 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
296 which also fixes any possible races when cifs signatures are enabled in SMBs
297 being sent out of signature sequence number order.
301 Fix byte range locking bug (endian problem) causing bad offset and
306 Fix oops (in send_sig) caused by CIFS unmount code trying to
307 wake up the demultiplex thread after it had exited. Do not log
308 error on harmless oplock release of closed handle.
312 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
313 Fix problem reconnecting secondary mounts to same server after session
314 failure. Fix invalid dentry - race in mkdir when directory gets created
315 by another client between the lookup and mkdir.
319 Fix to list processing in reopen_files. Fix reconnection when server hung
320 but tcpip session still alive. Set proper timeout on socket read.
324 Add missing mount options including iocharset. SMP fixes in write and open.
325 Fix errors in reconnecting after TCP session failure. Fix module unloading
326 of default nls codepage
330 Active smb transactions should never go negative (fix double FreeXid). Fix
331 list processing in file routines. Check return code on kmalloc in open.
332 Fix spinlock usage for SMP.
336 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
337 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
338 on create hard link when server does not support them.
342 Fix scheduling while atomic error in getting inode info on newly created file.
343 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
347 Fix oops on write to dead tcp session. Remove error log write for case when file open
348 O_CREAT but not O_EXCL
352 Fix non-POSIX behavior on rename of open file and delete of open file by taking
353 advantage of trans2 SetFileInfo rename facility if available on target server.
354 Retry on ENOSPC and EAGAIN socket errors.
358 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
359 allocation size miscalculation. After oplock token lost do not read through
364 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
368 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
369 during auto reconnection to server after server recovered from failure.
373 Finish support for Linux 2.5 open/create changes, which removes the
374 redundant NTCreate/QPathInfo/close that was sent during file create.
375 Enable oplock by default. Enable packet signing by default (needed to
376 access many recent Windows servers)
380 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
381 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
382 we will choose a cifs user session (smb uid) that better matches the local
383 uid if a) the mount uid does not match the current uid and b) we have another
384 session to the same server (ip address) for a different mount which
385 matches the current local uid.
389 Add support for mknod of block or character devices. Fix oplock
390 code (distributed caching) to properly send response to oplock
395 Finish up CIFS packet digital signing for the default
396 NTLM security case. This should help Windows 2003
397 network interoperability since it is common for
398 packet signing to be required now. Fix statfs (stat -f)
399 which recently started returning errors due to
400 invalid value (-1 instead of 0) being set in the
401 struct kstatfs f_ffiles field.
405 Fix oops on stopping oplock thread when removing cifs when
410 Fix mount options for ro (readonly), uid, gid and file and directory mode.
414 Fix errors displayed on failed mounts to be more understandable.
415 Fixed various incorrect or misleading smb to posix error code mappings.
419 Fix display of NTFS DFS junctions to display as symlinks.
420 They are the network equivalent. Fix oops in
421 cifs_partialpagewrite caused by missing spinlock protection
422 of openfile linked list. Allow writebehind caching errors to
423 be returned to the application at file close.
427 Clean up options displayed in /proc/mounts by show_options to
428 be more consistent with other filesystems.
432 Fix delete of readonly file to Windows servers. Reflect
433 presence or absence of read only dos attribute in mode
434 bits for servers that do not support CIFS Unix extensions.
435 Fix shortened results on readdir of large directories to
436 servers supporting CIFS Unix extensions (caused by
437 incorrect resume key).
441 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
445 unload nls if mount fails.
449 Add resume key support to search (readdir) code to workaround
450 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
451 allows disabling caching of attribute information for
456 Add more oplock handling (distributed caching code). Remove
457 dead code. Remove excessive stack space utilization from
462 Fix oops in get dfs referral (triggered when null path sent in to
463 mount). Add support for overriding rsize at mount time.
467 Fix buffer overrun in readdir which caused intermittent kernel oopses.
468 Fix writepage code to release kmap on write data. Allow "-ip=" new
469 mount option to be passed in on parameter distinct from the first part
470 (server name portion of) the UNC name. Allow override of the
471 tcp port of the target server via new mount option "-port="
475 Fix search handle leak on rewind. Fix setuid and gid so that they are
476 reflected in the local inode immediately. Cleanup of whitespace
477 to make 2.4 and 2.5 versions more consistent.
482 Fix signal sending so that captive thread (cifsd) exits on umount
483 (which was causing the warning in kmem_cache_free of the request buffers
484 at rmmod time). This had broken as a sideeffect of the recent global
485 kernel change to daemonize. Fix memory leak in readdir code which
486 showed up in "ls -R" (and applications that did search rewinding).
490 Reconnect tids and fids after session reconnection (still do not
491 reconnect byte range locks though). Fix problem caching
492 lookup information for directory inodes, improving performance,
493 especially in deep directory trees. Fix various build warnings.
497 Finish fixes to commit write for caching/readahead consistency. fsx
498 now works to Samba servers. Fix oops caused when readahead
499 was interrupted by a signal.
503 Fix data corruption (in partial page after truncate) that caused fsx to
504 fail to Windows servers. Cleaned up some extraneous error logging in
505 common error paths. Add generic sendfile support.
509 Fix memory leak in AllocMidQEntry.
510 Finish reconnection logic, so connection with server can be dropped
511 (or server rebooted) and the cifs client will reconnect.
515 Fix temporary socket leak when bad userid or password specified
516 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
517 over 16K to allow negotiation of up to Samba and Windows server default read
518 sizes. Add support for readpages
522 Fix oops when username not passed in on mount. Extensive fixes and improvements
523 to error logging (strip redundant newlines, change debug macros to ensure newline
524 passed in and to be more consistent). Fix writepage wrong file handle problem,
525 a readonly file handle could be incorrectly used to attempt to write out
526 file updates through the page cache to multiply open files. This could cause
527 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
528 shares to the same Windows server when using different usernames
529 (doing this to Samba servers worked but Windows was rejecting it) - now it is
530 possible to use different userids when connecting to the same server from a
531 Linux client. Fix oops when treeDisconnect called during unmount on
532 previously freed socket.
536 Fix oops in readpages caused by not setting address space operations in inode in
541 Includes support for deleting of open files and renaming over existing files (per POSIX
542 requirement). Add readlink support for Windows junction points (directory symlinks).
546 Changed read and write to go through pagecache. Added additional address space operations.
547 Memory mapped operations now working.
551 Added writepage code for additional memory mapping support. Fixed leak in xids causing
552 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
553 every stat call. Additional formatting cleanup.
557 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
561 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
562 Also included a modified version of his fix to protect global list manipulation of
563 the smb session and tree connection and mid related global variables.
567 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
568 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
569 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
573 More stylistic updates to better match kernel style. Add additional statistics
574 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
575 and CIFS Packet Signing enablement.
579 Replace call to sleep_on with safer wait_on_event.
580 Make stylistic changes to better match kernel style recommendations.
581 Remove most typedef usage (except for the PDUs themselves).
585 Update mount so the -unc mount option is no longer required (the ip address can be specified
586 in a UNC style device name. Implementation of readpage/writepage started.
590 Fix intermittent problem with incorrect smb header checking on badly
591 fragmented tcp responses
595 Fixes to setting of allocation size and file size.
599 Various 2.5.38 fixes. Now works on 2.5.38
603 Prepare for 2.5 kernel merge. Remove ifdefs.
607 Socket buffer management fixes. Fix dual free.
611 Various big endian fixes for hardlinks and symlinks and also for dfs.
615 Various big endian fixes for servers with Unix extensions such as Samba
619 Various FindNext fixes for incorrect filenames on large directory searches on big endian
620 clients. basic posix file i/o tests now work on big endian machines, not just le
624 SessionSetup and NegotiateProtocol now work from Big Endian machines.
625 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
626 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
630 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
631 files now return the correct rumber of links on fstat as they are repeatedly linked and unlinked.
635 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
636 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
637 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
638 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
642 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
643 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
647 Rewrote much of connection and mount/unmount logic to handle bugs with
648 multiple uses to same share, multiple users to same server etc.
652 Fixed major problem with dentry corruption (missing call to dput)
656 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
657 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
658 although corresponding function not fully implemented in the vfs yet
662 Fixed dentry caching bug, misc. cleanup
666 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
667 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
668 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
672 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
673 and tested against Samba 2.2.5
678 1) Fixed lockrange to be correct (it was one byte too short)
680 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
681 show range as locked when there is a conflict with an existing lock.
683 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
684 in most cases. Eventually will offer optional ability to query server for the correct perms.
686 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
687 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
690 4) Fixed error logging of valid mount options
692 5) Removed logging of password field.
694 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
695 and cleaned them up and made them more consistent with other cifs functions.
697 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
698 (with or without Unix exentions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
699 nor is the symlink support using the Unix extensions
701 8) Started adding the readlink and follow_link code
projects / linux-2.6 / blob