1 See https://wiki.samba.org/index.php/LinuxCIFSKernel for
2 more current information.
6 Add sockopt=TCP_NODELAY mount option. EA (xattr) routines hardened
7 to more strictly handle corrupt frames.
11 Fix append problem to Samba servers (files opened with O_APPEND could
12 have duplicated data). Fix oops in cifs_lookup. Workaround problem
13 mounting to OS/400 Netserve. Fix oops in cifs_get_tcp_session.
14 Disable use of server inode numbers when server only
15 partially supports them (e.g. for one server querying inode numbers on
16 FindFirst fails but QPathInfo queries works). Fix oops with dfs in
17 cifs_put_smb_ses. Fix mmap to work on directio mounts (needed
18 for OpenOffice when on forcedirectio mount e.g.)
22 Fix memory leak in reconnect. Fix oops in DFS mount error path.
23 Set s_maxbytes to smaller (the max that vfs can handle) so that
24 sendfile will now work over cifs mounts again. Add noforcegid
25 and noforceuid mount parameters. Fix small mem leak when using
26 ntlmv2. Fix 2nd mount to same server but with different port to
27 be allowed (rather than reusing the 1st port) - only when the
28 user explicitly overrides the port on the 2nd mount.
32 Client uses server inode numbers (which are persistent) rather than
33 client generated ones by default (mount option "serverino" turned
34 on by default if server supports it). Add forceuid and forcegid
35 mount options (so that when negotiating unix extensions specifying
36 which uid mounted does not immediately force the server's reported
37 uids to be overridden). Add support for scope mount parm. Improve
38 hard link detection to use same inode for both. Do not set
39 read-only dos attribute on directories (for chmod) since Windows
40 explorer special cases this attribute bit for directories for
45 Guard against buffer overruns in various UCS-2 to UTF-8 string conversions
46 when the UTF-8 string is composed of unusually long (more than 4 byte) converted
47 characters. Add support for mounting root of a share which redirects immediately
48 to DFS target. Convert string conversion functions from Unicode to more
49 accurately mark string length before allocating memory (which may help the
50 rare cases where a UTF-8 string is much larger than the UCS2 string that
51 we converted from). Fix endianness of the vcnum field used during
52 session setup to distinguish multiple mounts to same server from different
53 userids. Raw NTLMSSP fixed (it requires /proc/fs/cifs/experimental
54 flag to be set to 2, and mount must enable krb5 to turn on extended security).
55 Performance of file create to Samba improved (posix create on lookup
56 removes 1 of 2 network requests sent on file create)
60 Improve support for multiple security contexts to the same server. We
61 used to use the same "vcnumber" for all connections which could cause
62 the server to treat subsequent connections, especially those that
63 are authenticated as guest, as reconnections, invalidating the earlier
64 user's smb session. This fix allows cifs to mount multiple times to the
65 same server with different userids without risking invalidating earlier
66 established security contexts. fsync now sends SMB Flush operation
67 to better ensure that we wait for server to write all of the data to
68 server disk (not just write it over the network). Add new mount
69 parameter to allow user to disable sending the (slow) SMB flush on
70 fsync if desired (fsync still flushes all cached write data to the server).
71 Posix file open support added (turned off after one attempt if server
72 fails to support it properly, as with Samba server versions prior to 3.3.2)
73 Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
74 little memory for the "nativeFileSystem" field returned by the server
75 during mount). Endian convert inode numbers if necessary (makes it easier
76 to compare inode numbers on network files from big endian systems).
80 Add "forcemandatorylock" mount option to allow user to use mandatory
81 rather than posix (advisory) byte range locks, even though server would
82 support posix byte range locks. Fix query of root inode when prefixpath
83 specified and user does not have access to query information about the
84 top of the share. Fix problem in 2.6.28 resolving DFS paths to
85 Samba servers (worked to Windows). Fix rmdir so that pending search
86 (readdir) requests do not get invalid results which include the now
87 removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
88 when using DFS. Add better file create support to servers which support
89 the CIFS POSIX protocol extensions (this adds support for new flags
90 on create, and improves semantics for write of locked ranges).
94 Various fixes to make delete of open files behavior more predictable
95 (when delete of an open file fails we mark the file as "delete-on-close"
96 in a way that more servers accept, but only if we can first rename the
97 file to a temporary name). Add experimental support for more safely
98 handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
99 sends, and also let tcp autotune the socket send and receive buffers.
100 This reduces the number of EAGAIN errors returned by TCP/IP in
101 high stress workloads (and the number of retries on socket writes
102 when sending large SMBWriteX requests). Fix case in which a portion of
103 data can in some cases not get written to the file on the server before the
104 file is closed. Fix DFS parsing to properly handle path consumed field,
105 and to handle certain codepage conversions better. Fix mount and
106 umount race that can cause oops in mount or umount or reconnect.
110 Fix premature write failure on congested networks (we would give up
111 on EAGAIN from the socket too quickly on large writes).
112 Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
113 Fix endian problems in acl (mode from/to cifs acl) on bigendian
114 architectures. Fix problems with preserving timestamps on copying open
115 files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit
116 on parent directory when server supports Unix Extensions but not POSIX
117 create. Update cifs.upcall version to handle new Kerberos sec flags
118 (this requires update of cifs.upcall program from Samba). Fix memory leak
119 on dns_upcall (resolving DFS referralls). Fix plain text password
120 authentication (requires setting SecurityFlags to 0x30030 to enable
121 lanman and plain text though). Fix writes to be at correct offset when
122 file is open with O_APPEND and file is on a directio (forcediretio) mount.
123 Fix bug in rewinding readdir directory searches. Add nodfs mount option.
127 DFS support added (Microsoft Distributed File System client support needed
128 for referrals which enable a hierarchical name space among servers).
129 Disable temporary caching of mode bits to servers which do not support
130 storing of mode (e.g. Windows servers, when client mounts without cifsacl
131 mount option) and add new "dynperm" mount option to enable temporary caching
132 of mode (enable old behavior). Fix hang on mount caused when server crashes
133 tcp session during negotiate protocol.
137 Fix oops on second mount to server when null auth is used.
138 Enable experimental Kerberos support. Return writebehind errors on flush
139 and sync so that events like out of disk space get reported properly on
140 cached files. Fix setxattr failure to certain Samba versions. Fix mount
141 of second share to disconnected server session (autoreconnect on this).
142 Add ability to modify cifs acls for handling chmod (when mounted with
143 cifsacl flag). Fix prefixpath path separator so we can handle mounts
144 with prefixpaths longer than one directory (one path component) when
145 mounted to Windows servers. Fix slow file open when cifsacl
146 enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
151 Fix memory leak in statfs when mounted to very old servers (e.g.
152 Windows 9x). Add new feature "POSIX open" which allows servers
153 which support the current POSIX Extensions to provide better semantics
154 (e.g. delete for open files opened with posix open). Take into
155 account umask on posix mkdir not just older style mkdir. Add
156 ability to mount to IPC$ share (which allows CIFS named pipes to be
157 opened, read and written as if they were files). When 1st tree
158 connect fails (e.g. due to signing negotiation failure) fix
159 leak that causes cifsd not to stop and rmmod to fail to cleanup
160 cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
161 bigendian architectures. Fix possible memory corruption when
162 EAGAIN returned on kern_recvmsg. Return better error if server
163 requires packet signing but client has disabled it. When mounted
164 with cifsacl mount option - mode bits are approximated based
165 on the contents of the ACL of the file or directory. When cifs
166 mount helper is missing convert make sure that UNC name
167 has backslash (not forward slash) between ip address of server
172 Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
173 done with "serverino" mount option). Add support for POSIX Unlink
174 (helps with certain sharing violation cases when server such as
175 Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
176 mount option to allow disabling the CIFS Unix Extensions for just
177 that mount. Fix hang on spinlock in find_writable_file (race when
178 reopening file after session crash). Byte range unlock request to
179 windows server could unlock more bytes (on server copy of file)
180 than intended if start of unlock request is well before start of
181 a previous byte range lock that we issued.
185 IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
186 address after the "ip=" mount option, at least until mount.cifs is fixed to
187 handle DNS host to ipv6 name translation). Accept override of uid or gid
188 on mount even when Unix Extensions are negotiated (it used to be ignored
189 when Unix Extensions were ignored). This allows users to override the
190 default uid and gid for files when they are certain that the uids or
191 gids on the server do not match those of the client. Make "sec=none"
192 mount override username (so that null user connection is attempted)
193 to match what documentation said. Support for very large reads, over 127K,
194 available to some newer servers (such as Samba 3.0.26 and later but
195 note that it also requires setting CIFSMaxBufSize at module install
196 time to a larger value which may hurt performance in some cases).
197 Make sign option force signing (or fail if server does not support it).
201 Fix mtime bouncing around from local idea of last write times to remote time.
202 Fix hang (in i_size_read) when simultaneous size update of same remote file
203 on smp system corrupts sequence number. Do not reread unnecessarily partial page
204 (which we are about to overwrite anyway) when writing out file opened rw.
205 When DOS attribute of file on non-Unix server's file changes on the server side
206 from read-only back to read-write, reflect this change in default file mode
207 (we had been leaving a file's mode read-only until the inode were reloaded).
208 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
209 when archive dos attribute not set and we are changing mode back to writeable
210 on server which does not support the Unix Extensions). Remove read only dos
211 attribute on chmod when adding any write permission (ie on any of
212 user/group/other (not all of user/group/other ie 0222) when
213 mounted to windows. Add support for POSIX MkDir (slight performance
214 enhancement and eliminates the network race between the mkdir and set
215 path info of the mode).
220 Fix oops in list_del during mount caused by unaligned string.
221 Fix file corruption which could occur on some large file
222 copies caused by writepages page i/o completion bug.
223 Seek to SEEK_END forces check for update of file size for non-cached
224 files. Allow file size to be updated on remote extend of locally open,
225 non-cached file. Fix reconnect to newer Samba servers (or other servers
226 which support the CIFS Unix/POSIX extensions) so that we again tell the
227 server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
228 Add experimental support for new POSIX Open/Mkdir (which returns
229 stat information on the open, and allows setting the mode).
233 Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps.
234 Allow null user to be specified on mount ("username="). Do not return
235 EINVAL on readdir when filldir fails due to overwritten blocksize
236 (fixes FC problem). Return error in rename 2nd attempt retry (ie report
237 if rename by handle also fails, after rename by path fails, we were
238 not reporting whether the retry worked or not). Fix NTLMv2 to
239 work to Windows servers (mount with option "sec=ntlmv2").
243 Do not time out lockw calls when using posix extensions. Do not
244 time out requests if server still responding reasonably fast
245 on requests on other threads. Improve POSIX locking emulation,
246 (lock cancel now works, and unlock of merged range works even
247 to Windows servers now). Fix oops on mount to lanman servers
248 (win9x, os/2 etc.) when null password. Do not send listxattr
249 (SMB to query all EAs) if nouser_xattr specified. Fix SE Linux
250 problem (instantiate inodes/dentries in right order for readdir).
254 Rewritten sessionsetup support, including support for legacy SMB
255 session setup needed for OS/2 and older servers such as Windows 95 and 98.
256 Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst
257 so we can do search (ls etc.) to OS/2. Do not send NTCreateX
258 or recent levels of FindFirst unless server says it supports NT SMBs
259 (instead use legacy equivalents from LANMAN dialect). Fix to allow
260 NTLMv2 authentication support (now can use stronger password hashing
261 on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
262 Allow override of global cifs security flags on mount via "sec=" option(s).
266 POSIX locking to servers which support CIFS POSIX Extensions
267 (disabled by default controlled by proc/fs/cifs/Experimental).
268 Handle conversion of long share names (especially Asian languages)
269 to Unicode during mount. Fix memory leak in sess struct on reconnect.
270 Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on
271 cifs open which helps rare case when setpathinfo fails or server does
276 Fix slow oplock break when mounted to different servers at the same time and
277 the tids match and we try to find matching fid on wrong server. Fix read
278 looping when signing required by server (2.6.16 kernel only). Fix readdir
279 vs. rename race which could cause each to hang. Return . and .. even
280 if server does not. Allow searches to skip first three entries and
281 begin at any location. Fix oops in find_writeable_file.
285 Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
286 configure stronger authentication. Fix sfu symlinks so they can
287 be followed (not just recognized). Fix wraparound of bcc on
288 read responses when buffer size over 64K and also fix wrap of
289 max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in
290 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
291 on socket is returned over and over). Add POSIX (advisory) byte range
292 locking support (requires server with newest CIFS UNIX Extensions
293 to the protocol implemented). Slow down negprot slightly in port 139
294 RFC1001 case to give session_init time on buggy servers.
298 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
299 of readpages by eliminating one extra memcpy. Allow update of file size
300 from remote server even if file is open for write as long as mount is
301 directio. Recognize share mode security and send NTLM encrypted password
302 on tree connect if share mode negotiated.
306 Defer close of a file handle slightly if pending writes depend on that handle
307 (this reduces the EBADF bad file handle errors that can be logged under heavy
308 stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2
309 Fix SFU style symlinks and mknod needed for servers which do not support the
310 CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative
311 dentries so files that the client sees as deleted but that later get created
312 on the server will be recognized. Add client side permission check on setattr.
313 Timeout stuck requests better (where server has never responded or sent corrupt
318 Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
319 to be smaller at first (but increasing) so large write performance performance
320 over GigE is better. Do not hang thread on illegal byte range lock response
321 from Windows (Windows can send an RFC1001 size which does not match smb size) by
322 allowing an SMBs TCP length to be up to a few bytes longer than it should be.
323 wsize and rsize can now be larger than negotiated buffer size if server
324 supports large readx/writex, even when directio mount flag not specified.
325 Write size will in many cases now be 16K instead of 4K which greatly helps
326 file copy performance on lightly loaded networks. Fix oops in dnotify
327 when experimental config flag enabled. Make cifsFYI more granular.
331 Fix readdir caching when unlink removes file in current search buffer,
332 and this is followed by a rewind search to just before the deleted entry.
333 Do not attempt to set ctime unless atime and/or mtime change requested
334 (most servers throw it away anyway). Fix length check of received smbs
335 to be more accurate. Fix big endian problem with mapchars mount option,
336 and with a field returned by statfs.
340 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
341 For these older servers, add option for passing netbios name of server in
342 on mount (servernetbiosname). Add suspend support for power management, to
343 avoid cifsd thread preventing software suspend from working.
344 Add mount option for disabling the default behavior of sending byte range lock
345 requests to the server (necessary for certain applications which break with
346 mandatory lock behavior such as Evolution), and also mount option for
347 requesting case insensitive matching for path based requests (requesting
348 case sensitive is the default).
352 Add writepage performance improvements. Fix path name conversions
353 for long filenames on mounts which were done with "mapchars" mount option
354 specified. Ensure multiplex ids do not collide. Fix case in which
355 rmmod can oops if done soon after last unmount. Fix truncated
356 search (readdir) output when resume filename was a long filename.
357 Fix filename conversion when mapchars mount option was specified and
358 filename was a long filename.
362 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
363 Do not oops if root user kills cifs oplock kernel thread or
364 kills the cifsd thread (NB: killing the cifs kernel threads is not
365 recommended, unmount and rmmod cifs will kill them when they are
366 no longer needed). Fix readdir to ASCII servers (ie older servers
367 which do not support Unicode) and also require asterisk.
368 Fix out of memory case in which data could be written one page
369 off in the page cache.
373 Fix caching problem, in which readdir of directory containing a file
374 which was cached could cause the file's time stamp to be updated
375 without invalidating the readahead data (so we could get stale
376 file data on the client for that file even as the server copy changed).
377 Cleanup response processing so cifsd can not loop when abnormally
383 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
384 transact response for an SMB request and search entry split across two frames.
385 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
386 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
387 unless server explicitly claims to support them in CIFS Unix extensions
388 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
389 different users from the same client to the same server. Fix oops in
390 cifs_close. Add mount option for remapping reserved characters in
391 filenames (also allow recognizing files with created by SFU which have any
392 of these seven reserved characters, except backslash, to be recognized).
393 Fix invalid transact2 message (we were sometimes trying to interpret
394 oplock breaks as SMB responses). Add ioctl for checking that the
395 current uid matches the uid of the mounter (needed by umount.cifs).
396 Reduce the number of large buffer allocations in cifs response processing
397 (significantly reduces memory pressure under heavy stress with multiple
398 processes accessing the same server at the same time).
402 Fix updates of DOS attributes and time fields so that files on NT4 servers
403 do not get marked delete on close. Display sizes of cifs buffer pools in
404 cifs stats. Fix oops in unmount when cifsd thread being killed by
405 shutdown. Add generic readv/writev and aio support. Report inode numbers
406 consistently in readdir and lookup (when serverino mount option is
407 specified use the inode number that the server reports - for both lookup
408 and readdir, otherwise by default the locally generated inode number is used
409 for inodes created in either path since servers are not always able to
410 provide unique inode numbers when exporting multiple volumes from under one
415 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
416 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
417 (mostly affects NT4 servers) by retry with handle based network operation.
418 Add new POSIX Query FS Info for returning statfs info more accurately.
419 Handle passwords with multiple commas in them.
423 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
424 Fix capabilities flags for large readx so as to allow reads larger than 64K.
428 Add module init parm for large SMB buffer size (to allow it to be changed
429 from its default of 16K) which is especially useful for large file copy
430 when mounting with the directio mount option. Fix oops after
431 returning from mount when experimental ExtendedSecurity enabled and
432 SpnegoNegotiated returning invalid error. Fix case to retry better when
433 peek returns from 1 to 3 bytes on socket which should have more data.
434 Fixed path based calls (such as cifs lookup) to handle path names
435 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
436 from Samba server to DC (Samba required dummy LM password).
440 Turn off DNOTIFY (directory change notification support) by default
441 (unless built with the experimental flag) to fix hang with KDE
442 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
443 waiting on an SMB response) in SendReceive when session dies but
444 reconnects quickly from another task. Add module init parms for
445 minimum number of large and small network buffers in the buffer pools,
446 and for the maximum number of simultaneous requests.
450 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
451 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
452 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
453 improperly zeroed buffer in CIFS Unix extensions set times call.
457 Fix internationalization problem in cifs readdir with filenames that map to
458 longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
459 for readdir to netapp servers. Fix search rewind (seek into readdir to return
460 non-consecutive entries). Do not do readdir when server negotiates
461 buffer size to small to fit filename. Add support for reading POSIX ACLs from
462 the server (add also acl and noacl mount options).
466 Optionally allow using server side inode numbers, rather than client generated
467 ones by specifying mount option "serverino" - this is required for some apps
468 to work which double check hardlinked files and have persistent inode numbers.
472 Multiple bigendian fixes. On little endian systems (for reconnect after
473 network failure) fix tcp session reconnect code so we do not try first
474 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
475 as directories rather than symlinks because we can do follow link on them.
479 Add config option to enable XATTR (extended attribute) support, mapping
480 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
481 minor fixes pointed out by the Stanford SWAT checker (mostly missing
482 or out of order NULL pointer checks in little used error paths).
486 Add new mount parm to control whether mode check (generic_permission) is done
487 on the client. If Unix extensions are enabled and the uids on the client
488 and server do not match, client permission checks are meaningless on
489 server uids that do not exist on the client (this does not affect the
490 normal ACL check which occurs on the server). Fix default uid
491 on mknod to match create and mkdir. Add optional mount parm to allow
492 override of the default uid behavior (in which the server sets the uid
493 and gid of newly created files). Normally for network filesystem mounts
494 user want the server to set the uid/gid on newly created files (rather than
495 using uid of the client processes you would in a local filesystem).
499 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
500 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
501 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
502 (block/char/fifo) properly. Remove spurious mount warning log entry when
503 credentials passed as mount argument. Set major/minor device number in
504 inode for block and char devices when unix extensions enabled.
508 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
509 amounts of return data. Properly limit requests to MAX_REQ (50
510 is the usual maximum active multiplex SMB/CIFS requests per server).
511 Do not kill cifsd (and thus hurt the other SMB session) when more than one
512 session to the same server (but with different userids) exists and one
513 of the two user's smb sessions is being removed while leaving the other.
514 Do not loop reconnecting in cifsd demultiplex thread when admin
515 kills the thread without going through unmount.
519 Do not rename hardlinked files (since that should be a noop). Flush
520 cached write behind data when reopening a file after session abend,
521 except when already in write. Grab per socket sem during reconnect
522 to avoid oops in sendmsg if overlapping with reconnect. Do not
523 reset cached inode file size on readdir for files open for write on
529 Update number of blocks in file so du command is happier (in Linux a fake
530 blocksize of 512 is required for calculating number of blocks in inode).
531 Fix prepare write of partial pages to read in data from server if possible.
532 Fix race on tcpStatus field between unmount and reconnection code, causing
533 cifsd process sometimes to hang around forever. Improve out of memory
534 checks in cifs_filldir
538 Fix incorrect file size in file handle based setattr on big endian hardware.
539 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
540 and closing file structs in writepage/partialpagewrite. Add statistics
541 for each mounted share (new menuconfig option). Fix endianness problem in
542 volume information displayed in /proc/fs/cifs/DebugData (only affects
543 affects big endian architectures). Prevent renames while constructing
544 path names for open, mkdir and rmdir.
548 Change to mempools for alloc smb request buffers and multiplex structs
549 to better handle low memory problems (and potential deadlocks).
553 Fix incomplete listings of large directories on Samba servers when Unix
554 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
555 rename deadlock when writing out dirty pages at same time.
559 Fix open of files in which O_CREATE can cause the mode to change in
560 some cases. Fix case in which retry of write overlaps file close.
561 Fix PPC64 build error. Reduce excessive stack usage in smb password
562 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
566 Fixes for large file copy, signal handling, socket retry, buffer
567 allocation and low memory situations.
571 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
572 also now allowing support for specifying client netbiosname. NT4 support added.
576 Fix reconnection (and certain failed mounts) to properly wake up the
577 blocked users thread so it does not seem hung (in some cases was blocked
578 until the cifs receive timeout expired). Fix spurious error logging
579 to kernel log when application with open network files killed.
583 Fix /proc/fs module unload warning message (that could be logged
584 to the kernel log). Fix intermittent failure in connectathon
585 test7 (hardlink count not immediately refreshed in case in which
586 inode metadata can be incorrectly kept cached when time near zero)
590 Allow file_mode and dir_mode (specified at mount time) to be enforced
591 locally (the server already enforced its own ACLs too) for servers
592 that do not report the correct mode (do not support the
593 CIFS Unix Extensions).
597 Fix some small memory leaks in some unmount error paths. Fix major leak
598 of cache pages in readpages causing multiple read oriented stress
599 testcases (including fsx, and even large file copy) to fail over time.
603 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
604 This allows files that differ only in case and improves performance of file
605 creation and file open to such servers. Fix semaphore conflict which causes
606 slow delete of open file to Samba (which unfortunately can cause an oplock
607 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
611 fixes to cifs_readpages for fsx test case
615 Fix caching data integrity bug when extending file size especially when no
616 oplock on file. Fix spurious logging of valid already parsed mount options
617 that are parsed outside of the cifs vfs such as nosuid.
622 Connect to server when port number override not specified, and tcp port
623 unitialized. Reset search to restart at correct file when kernel routine
624 filldir returns error during large directory searches (readdir).
628 Fix caching problem when files opened by multiple clients in which
629 page cache could contain stale data, and write through did
630 not occur often enough while file was still open when read ahead
631 (read oplock) not allowed. Treat "sep=" when first mount option
632 as an override of comma as the default separator between mount
637 Allow passwords longer than 16 bytes. Allow null password string.
641 Gracefully clean up failed mounts when attempting to mount to servers such as
642 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
643 embedded commas in mount parsing of passwords.
647 Invalidate local inode cached pages on oplock break and when last file
648 instance is closed so that the client does not continue using stale local
649 copy rather than later modified server copy of file. Do not reconnect
650 when server drops the tcp session prematurely before negotiate
651 protocol response. Fix oops in reopen_file when dentry freed. Allow
652 the support for CIFS Unix Extensions to be disabled via proc interface.
656 Fix hang in commit_write during reconnection of open files under heavy load.
657 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
658 which also fixes any possible races when cifs signatures are enabled in SMBs
659 being sent out of signature sequence number order.
663 Fix byte range locking bug (endian problem) causing bad offset and
668 Fix oops (in send_sig) caused by CIFS unmount code trying to
669 wake up the demultiplex thread after it had exited. Do not log
670 error on harmless oplock release of closed handle.
674 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
675 Fix problem reconnecting secondary mounts to same server after session
676 failure. Fix invalid dentry - race in mkdir when directory gets created
677 by another client between the lookup and mkdir.
681 Fix to list processing in reopen_files. Fix reconnection when server hung
682 but tcpip session still alive. Set proper timeout on socket read.
686 Add missing mount options including iocharset. SMP fixes in write and open.
687 Fix errors in reconnecting after TCP session failure. Fix module unloading
688 of default nls codepage
692 Active smb transactions should never go negative (fix double FreeXid). Fix
693 list processing in file routines. Check return code on kmalloc in open.
694 Fix spinlock usage for SMP.
698 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
699 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
700 on create hard link when server does not support them.
704 Fix scheduling while atomic error in getting inode info on newly created file.
705 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
709 Fix oops on write to dead tcp session. Remove error log write for case when file open
710 O_CREAT but not O_EXCL
714 Fix non-POSIX behavior on rename of open file and delete of open file by taking
715 advantage of trans2 SetFileInfo rename facility if available on target server.
716 Retry on ENOSPC and EAGAIN socket errors.
720 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
721 allocation size miscalculation. After oplock token lost do not read through
726 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
730 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
731 during auto reconnection to server after server recovered from failure.
735 Finish support for Linux 2.5 open/create changes, which removes the
736 redundant NTCreate/QPathInfo/close that was sent during file create.
737 Enable oplock by default. Enable packet signing by default (needed to
738 access many recent Windows servers)
742 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
743 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
744 we will choose a cifs user session (smb uid) that better matches the local
745 uid if a) the mount uid does not match the current uid and b) we have another
746 session to the same server (ip address) for a different mount which
747 matches the current local uid.
751 Add support for mknod of block or character devices. Fix oplock
752 code (distributed caching) to properly send response to oplock
757 Finish up CIFS packet digital signing for the default
758 NTLM security case. This should help Windows 2003
759 network interoperability since it is common for
760 packet signing to be required now. Fix statfs (stat -f)
761 which recently started returning errors due to
762 invalid value (-1 instead of 0) being set in the
763 struct kstatfs f_ffiles field.
767 Fix oops on stopping oplock thread when removing cifs when
772 Fix mount options for ro (readonly), uid, gid and file and directory mode.
776 Fix errors displayed on failed mounts to be more understandable.
777 Fixed various incorrect or misleading smb to posix error code mappings.
781 Fix display of NTFS DFS junctions to display as symlinks.
782 They are the network equivalent. Fix oops in
783 cifs_partialpagewrite caused by missing spinlock protection
784 of openfile linked list. Allow writebehind caching errors to
785 be returned to the application at file close.
789 Clean up options displayed in /proc/mounts by show_options to
790 be more consistent with other filesystems.
794 Fix delete of readonly file to Windows servers. Reflect
795 presence or absence of read only dos attribute in mode
796 bits for servers that do not support CIFS Unix extensions.
797 Fix shortened results on readdir of large directories to
798 servers supporting CIFS Unix extensions (caused by
799 incorrect resume key).
803 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
807 unload nls if mount fails.
811 Add resume key support to search (readdir) code to workaround
812 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
813 allows disabling caching of attribute information for
818 Add more oplock handling (distributed caching code). Remove
819 dead code. Remove excessive stack space utilization from
824 Fix oops in get dfs referral (triggered when null path sent in to
825 mount). Add support for overriding rsize at mount time.
829 Fix buffer overrun in readdir which caused intermittent kernel oopses.
830 Fix writepage code to release kmap on write data. Allow "-ip=" new
831 mount option to be passed in on parameter distinct from the first part
832 (server name portion of) the UNC name. Allow override of the
833 tcp port of the target server via new mount option "-port="
837 Fix search handle leak on rewind. Fix setuid and gid so that they are
838 reflected in the local inode immediately. Cleanup of whitespace
839 to make 2.4 and 2.5 versions more consistent.
844 Fix signal sending so that captive thread (cifsd) exits on umount
845 (which was causing the warning in kmem_cache_free of the request buffers
846 at rmmod time). This had broken as a sideeffect of the recent global
847 kernel change to daemonize. Fix memory leak in readdir code which
848 showed up in "ls -R" (and applications that did search rewinding).
852 Reconnect tids and fids after session reconnection (still do not
853 reconnect byte range locks though). Fix problem caching
854 lookup information for directory inodes, improving performance,
855 especially in deep directory trees. Fix various build warnings.
859 Finish fixes to commit write for caching/readahead consistency. fsx
860 now works to Samba servers. Fix oops caused when readahead
861 was interrupted by a signal.
865 Fix data corruption (in partial page after truncate) that caused fsx to
866 fail to Windows servers. Cleaned up some extraneous error logging in
867 common error paths. Add generic sendfile support.
871 Fix memory leak in AllocMidQEntry.
872 Finish reconnection logic, so connection with server can be dropped
873 (or server rebooted) and the cifs client will reconnect.
877 Fix temporary socket leak when bad userid or password specified
878 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
879 over 16K to allow negotiation of up to Samba and Windows server default read
880 sizes. Add support for readpages
884 Fix oops when username not passed in on mount. Extensive fixes and improvements
885 to error logging (strip redundant newlines, change debug macros to ensure newline
886 passed in and to be more consistent). Fix writepage wrong file handle problem,
887 a readonly file handle could be incorrectly used to attempt to write out
888 file updates through the page cache to multiply open files. This could cause
889 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
890 shares to the same Windows server when using different usernames
891 (doing this to Samba servers worked but Windows was rejecting it) - now it is
892 possible to use different userids when connecting to the same server from a
893 Linux client. Fix oops when treeDisconnect called during unmount on
894 previously freed socket.
898 Fix oops in readpages caused by not setting address space operations in inode in
903 Includes support for deleting of open files and renaming over existing files (per POSIX
904 requirement). Add readlink support for Windows junction points (directory symlinks).
908 Changed read and write to go through pagecache. Added additional address space operations.
909 Memory mapped operations now working.
913 Added writepage code for additional memory mapping support. Fixed leak in xids causing
914 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
915 every stat call. Additional formatting cleanup.
919 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
923 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
924 Also included a modified version of his fix to protect global list manipulation of
925 the smb session and tree connection and mid related global variables.
929 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
930 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
931 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
935 More stylistic updates to better match kernel style. Add additional statistics
936 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
937 and CIFS Packet Signing enablement.
941 Replace call to sleep_on with safer wait_on_event.
942 Make stylistic changes to better match kernel style recommendations.
943 Remove most typedef usage (except for the PDUs themselves).
947 Update mount so the -unc mount option is no longer required (the ip address can be specified
948 in a UNC style device name. Implementation of readpage/writepage started.
952 Fix intermittent problem with incorrect smb header checking on badly
953 fragmented tcp responses
957 Fixes to setting of allocation size and file size.
961 Various 2.5.38 fixes. Now works on 2.5.38
965 Prepare for 2.5 kernel merge. Remove ifdefs.
969 Socket buffer management fixes. Fix dual free.
973 Various big endian fixes for hardlinks and symlinks and also for dfs.
977 Various big endian fixes for servers with Unix extensions such as Samba
981 Various FindNext fixes for incorrect filenames on large directory searches on big endian
982 clients. basic posix file i/o tests now work on big endian machines, not just le
986 SessionSetup and NegotiateProtocol now work from Big Endian machines.
987 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
988 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
992 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
993 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
997 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
998 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
999 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
1000 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
1004 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
1005 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
1009 Rewrote much of connection and mount/unmount logic to handle bugs with
1010 multiple uses to same share, multiple users to same server etc.
1014 Fixed major problem with dentry corruption (missing call to dput)
1018 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
1019 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
1020 although corresponding function not fully implemented in the vfs yet
1024 Fixed dentry caching bug, misc. cleanup
1028 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
1029 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
1030 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
1034 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
1035 and tested against Samba 2.2.5
1040 1) Fixed lockrange to be correct (it was one byte too short)
1042 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
1043 show range as locked when there is a conflict with an existing lock.
1045 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
1046 in most cases. Eventually will offer optional ability to query server for the correct perms.
1048 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
1049 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
1052 4) Fixed error logging of valid mount options
1054 5) Removed logging of password field.
1056 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
1057 and cleaned them up and made them more consistent with other cifs functions.
1059 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
1060 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1061 nor is the symlink support using the Unix extensions
1063 8) Started adding the readlink and follow_link code
git.samba.org / sfrench / cifs-2.6.git / blob