3 Client uses server inode numbers (which are persistent) rather than
4 client generated ones by default (mount option "serverino" turned
5 on by default if server supports it). Add forceuid and forcegid
6 mount options (so that when negotiating unix extensions specifying
7 which uid mounted does not immediately force the server's reported
8 uids to be overridden).
12 Guard against buffer overruns in various UCS-2 to UTF-8 string conversions
13 when the UTF-8 string is composed of unusually long (more than 4 byte) converted
14 characters. Add support for mounting root of a share which redirects immediately
15 to DFS target. Convert string conversion functions from Unicode to more
16 accurately mark string length before allocating memory (which may help the
17 rare cases where a UTF-8 string is much larger than the UCS2 string that
18 we converted from). Fix endianness of the vcnum field used during
19 session setup to distinguish multiple mounts to same server from different
20 userids. Raw NTLMSSP fixed (it requires /proc/fs/cifs/experimental
21 flag to be set to 2, and mount must enable krb5 to turn on extended security).
22 Performance of file create to Samba improved (posix create on lookup
23 removes 1 of 2 network requests sent on file create)
27 Improve support for multiple security contexts to the same server. We
28 used to use the same "vcnumber" for all connections which could cause
29 the server to treat subsequent connections, especially those that
30 are authenticated as guest, as reconnections, invalidating the earlier
31 user's smb session. This fix allows cifs to mount multiple times to the
32 same server with different userids without risking invalidating earlier
33 established security contexts. fsync now sends SMB Flush operation
34 to better ensure that we wait for server to write all of the data to
35 server disk (not just write it over the network). Add new mount
36 parameter to allow user to disable sending the (slow) SMB flush on
37 fsync if desired (fsync still flushes all cached write data to the server).
38 Posix file open support added (turned off after one attempt if server
39 fails to support it properly, as with Samba server versions prior to 3.3.2)
40 Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
41 little memory for the "nativeFileSystem" field returned by the server
42 during mount). Endian convert inode numbers if necessary (makes it easier
43 to compare inode numbers on network files from big endian systems).
47 Add "forcemandatorylock" mount option to allow user to use mandatory
48 rather than posix (advisory) byte range locks, even though server would
49 support posix byte range locks. Fix query of root inode when prefixpath
50 specified and user does not have access to query information about the
51 top of the share. Fix problem in 2.6.28 resolving DFS paths to
52 Samba servers (worked to Windows). Fix rmdir so that pending search
53 (readdir) requests do not get invalid results which include the now
54 removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
55 when using DFS. Add better file create support to servers which support
56 the CIFS POSIX protocol extensions (this adds support for new flags
57 on create, and improves semantics for write of locked ranges).
61 Various fixes to make delete of open files behavior more predictable
62 (when delete of an open file fails we mark the file as "delete-on-close"
63 in a way that more servers accept, but only if we can first rename the
64 file to a temporary name). Add experimental support for more safely
65 handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
66 sends, and also let tcp autotune the socket send and receive buffers.
67 This reduces the number of EAGAIN errors returned by TCP/IP in
68 high stress workloads (and the number of retries on socket writes
69 when sending large SMBWriteX requests). Fix case in which a portion of
70 data can in some cases not get written to the file on the server before the
71 file is closed. Fix DFS parsing to properly handle path consumed field,
72 and to handle certain codepage conversions better. Fix mount and
73 umount race that can cause oops in mount or umount or reconnect.
77 Fix premature write failure on congested networks (we would give up
78 on EAGAIN from the socket too quickly on large writes).
79 Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
80 Fix endian problems in acl (mode from/to cifs acl) on bigendian
81 architectures. Fix problems with preserving timestamps on copying open
82 files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit
83 on parent directory when server supports Unix Extensions but not POSIX
84 create. Update cifs.upcall version to handle new Kerberos sec flags
85 (this requires update of cifs.upcall program from Samba). Fix memory leak
86 on dns_upcall (resolving DFS referralls). Fix plain text password
87 authentication (requires setting SecurityFlags to 0x30030 to enable
88 lanman and plain text though). Fix writes to be at correct offset when
89 file is open with O_APPEND and file is on a directio (forcediretio) mount.
90 Fix bug in rewinding readdir directory searches. Add nodfs mount option.
94 DFS support added (Microsoft Distributed File System client support needed
95 for referrals which enable a hierarchical name space among servers).
96 Disable temporary caching of mode bits to servers which do not support
97 storing of mode (e.g. Windows servers, when client mounts without cifsacl
98 mount option) and add new "dynperm" mount option to enable temporary caching
99 of mode (enable old behavior). Fix hang on mount caused when server crashes
100 tcp session during negotiate protocol.
104 Fix oops on second mount to server when null auth is used.
105 Enable experimental Kerberos support. Return writebehind errors on flush
106 and sync so that events like out of disk space get reported properly on
107 cached files. Fix setxattr failure to certain Samba versions. Fix mount
108 of second share to disconnected server session (autoreconnect on this).
109 Add ability to modify cifs acls for handling chmod (when mounted with
110 cifsacl flag). Fix prefixpath path separator so we can handle mounts
111 with prefixpaths longer than one directory (one path component) when
112 mounted to Windows servers. Fix slow file open when cifsacl
113 enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
118 Fix memory leak in statfs when mounted to very old servers (e.g.
119 Windows 9x). Add new feature "POSIX open" which allows servers
120 which support the current POSIX Extensions to provide better semantics
121 (e.g. delete for open files opened with posix open). Take into
122 account umask on posix mkdir not just older style mkdir. Add
123 ability to mount to IPC$ share (which allows CIFS named pipes to be
124 opened, read and written as if they were files). When 1st tree
125 connect fails (e.g. due to signing negotiation failure) fix
126 leak that causes cifsd not to stop and rmmod to fail to cleanup
127 cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
128 bigendian architectures. Fix possible memory corruption when
129 EAGAIN returned on kern_recvmsg. Return better error if server
130 requires packet signing but client has disabled it. When mounted
131 with cifsacl mount option - mode bits are approximated based
132 on the contents of the ACL of the file or directory. When cifs
133 mount helper is missing convert make sure that UNC name
134 has backslash (not forward slash) between ip address of server
139 Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
140 done with "serverino" mount option). Add support for POSIX Unlink
141 (helps with certain sharing violation cases when server such as
142 Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
143 mount option to allow disabling the CIFS Unix Extensions for just
144 that mount. Fix hang on spinlock in find_writable_file (race when
145 reopening file after session crash). Byte range unlock request to
146 windows server could unlock more bytes (on server copy of file)
147 than intended if start of unlock request is well before start of
148 a previous byte range lock that we issued.
152 IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
153 address after the "ip=" mount option, at least until mount.cifs is fixed to
154 handle DNS host to ipv6 name translation). Accept override of uid or gid
155 on mount even when Unix Extensions are negotiated (it used to be ignored
156 when Unix Extensions were ignored). This allows users to override the
157 default uid and gid for files when they are certain that the uids or
158 gids on the server do not match those of the client. Make "sec=none"
159 mount override username (so that null user connection is attempted)
160 to match what documentation said. Support for very large reads, over 127K,
161 available to some newer servers (such as Samba 3.0.26 and later but
162 note that it also requires setting CIFSMaxBufSize at module install
163 time to a larger value which may hurt performance in some cases).
164 Make sign option force signing (or fail if server does not support it).
168 Fix mtime bouncing around from local idea of last write times to remote time.
169 Fix hang (in i_size_read) when simultaneous size update of same remote file
170 on smp system corrupts sequence number. Do not reread unnecessarily partial page
171 (which we are about to overwrite anyway) when writing out file opened rw.
172 When DOS attribute of file on non-Unix server's file changes on the server side
173 from read-only back to read-write, reflect this change in default file mode
174 (we had been leaving a file's mode read-only until the inode were reloaded).
175 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
176 when archive dos attribute not set and we are changing mode back to writeable
177 on server which does not support the Unix Extensions). Remove read only dos
178 attribute on chmod when adding any write permission (ie on any of
179 user/group/other (not all of user/group/other ie 0222) when
180 mounted to windows. Add support for POSIX MkDir (slight performance
181 enhancement and eliminates the network race between the mkdir and set
182 path info of the mode).
187 Fix oops in list_del during mount caused by unaligned string.
188 Fix file corruption which could occur on some large file
189 copies caused by writepages page i/o completion bug.
190 Seek to SEEK_END forces check for update of file size for non-cached
191 files. Allow file size to be updated on remote extend of locally open,
192 non-cached file. Fix reconnect to newer Samba servers (or other servers
193 which support the CIFS Unix/POSIX extensions) so that we again tell the
194 server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
195 Add experimental support for new POSIX Open/Mkdir (which returns
196 stat information on the open, and allows setting the mode).
200 Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps.
201 Allow null user to be specified on mount ("username="). Do not return
202 EINVAL on readdir when filldir fails due to overwritten blocksize
203 (fixes FC problem). Return error in rename 2nd attempt retry (ie report
204 if rename by handle also fails, after rename by path fails, we were
205 not reporting whether the retry worked or not). Fix NTLMv2 to
206 work to Windows servers (mount with option "sec=ntlmv2").
210 Do not time out lockw calls when using posix extensions. Do not
211 time out requests if server still responding reasonably fast
212 on requests on other threads. Improve POSIX locking emulation,
213 (lock cancel now works, and unlock of merged range works even
214 to Windows servers now). Fix oops on mount to lanman servers
215 (win9x, os/2 etc.) when null password. Do not send listxattr
216 (SMB to query all EAs) if nouser_xattr specified. Fix SE Linux
217 problem (instantiate inodes/dentries in right order for readdir).
221 Rewritten sessionsetup support, including support for legacy SMB
222 session setup needed for OS/2 and older servers such as Windows 95 and 98.
223 Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst
224 so we can do search (ls etc.) to OS/2. Do not send NTCreateX
225 or recent levels of FindFirst unless server says it supports NT SMBs
226 (instead use legacy equivalents from LANMAN dialect). Fix to allow
227 NTLMv2 authentication support (now can use stronger password hashing
228 on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
229 Allow override of global cifs security flags on mount via "sec=" option(s).
233 POSIX locking to servers which support CIFS POSIX Extensions
234 (disabled by default controlled by proc/fs/cifs/Experimental).
235 Handle conversion of long share names (especially Asian languages)
236 to Unicode during mount. Fix memory leak in sess struct on reconnect.
237 Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on
238 cifs open which helps rare case when setpathinfo fails or server does
243 Fix slow oplock break when mounted to different servers at the same time and
244 the tids match and we try to find matching fid on wrong server. Fix read
245 looping when signing required by server (2.6.16 kernel only). Fix readdir
246 vs. rename race which could cause each to hang. Return . and .. even
247 if server does not. Allow searches to skip first three entries and
248 begin at any location. Fix oops in find_writeable_file.
252 Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
253 configure stronger authentication. Fix sfu symlinks so they can
254 be followed (not just recognized). Fix wraparound of bcc on
255 read responses when buffer size over 64K and also fix wrap of
256 max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in
257 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
258 on socket is returned over and over). Add POSIX (advisory) byte range
259 locking support (requires server with newest CIFS UNIX Extensions
260 to the protocol implemented). Slow down negprot slightly in port 139
261 RFC1001 case to give session_init time on buggy servers.
265 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
266 of readpages by eliminating one extra memcpy. Allow update of file size
267 from remote server even if file is open for write as long as mount is
268 directio. Recognize share mode security and send NTLM encrypted password
269 on tree connect if share mode negotiated.
273 Defer close of a file handle slightly if pending writes depend on that handle
274 (this reduces the EBADF bad file handle errors that can be logged under heavy
275 stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2
276 Fix SFU style symlinks and mknod needed for servers which do not support the
277 CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative
278 dentries so files that the client sees as deleted but that later get created
279 on the server will be recognized. Add client side permission check on setattr.
280 Timeout stuck requests better (where server has never responded or sent corrupt
285 Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
286 to be smaller at first (but increasing) so large write performance performance
287 over GigE is better. Do not hang thread on illegal byte range lock response
288 from Windows (Windows can send an RFC1001 size which does not match smb size) by
289 allowing an SMBs TCP length to be up to a few bytes longer than it should be.
290 wsize and rsize can now be larger than negotiated buffer size if server
291 supports large readx/writex, even when directio mount flag not specified.
292 Write size will in many cases now be 16K instead of 4K which greatly helps
293 file copy performance on lightly loaded networks. Fix oops in dnotify
294 when experimental config flag enabled. Make cifsFYI more granular.
298 Fix readdir caching when unlink removes file in current search buffer,
299 and this is followed by a rewind search to just before the deleted entry.
300 Do not attempt to set ctime unless atime and/or mtime change requested
301 (most servers throw it away anyway). Fix length check of received smbs
302 to be more accurate. Fix big endian problem with mapchars mount option,
303 and with a field returned by statfs.
307 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
308 For these older servers, add option for passing netbios name of server in
309 on mount (servernetbiosname). Add suspend support for power management, to
310 avoid cifsd thread preventing software suspend from working.
311 Add mount option for disabling the default behavior of sending byte range lock
312 requests to the server (necessary for certain applications which break with
313 mandatory lock behavior such as Evolution), and also mount option for
314 requesting case insensitive matching for path based requests (requesting
315 case sensitive is the default).
319 Add writepage performance improvements. Fix path name conversions
320 for long filenames on mounts which were done with "mapchars" mount option
321 specified. Ensure multiplex ids do not collide. Fix case in which
322 rmmod can oops if done soon after last unmount. Fix truncated
323 search (readdir) output when resume filename was a long filename.
324 Fix filename conversion when mapchars mount option was specified and
325 filename was a long filename.
329 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
330 Do not oops if root user kills cifs oplock kernel thread or
331 kills the cifsd thread (NB: killing the cifs kernel threads is not
332 recommended, unmount and rmmod cifs will kill them when they are
333 no longer needed). Fix readdir to ASCII servers (ie older servers
334 which do not support Unicode) and also require asterisk.
335 Fix out of memory case in which data could be written one page
336 off in the page cache.
340 Fix caching problem, in which readdir of directory containing a file
341 which was cached could cause the file's time stamp to be updated
342 without invalidating the readahead data (so we could get stale
343 file data on the client for that file even as the server copy changed).
344 Cleanup response processing so cifsd can not loop when abnormally
350 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
351 transact response for an SMB request and search entry split across two frames.
352 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
353 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
354 unless server explicitly claims to support them in CIFS Unix extensions
355 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
356 different users from the same client to the same server. Fix oops in
357 cifs_close. Add mount option for remapping reserved characters in
358 filenames (also allow recognizing files with created by SFU which have any
359 of these seven reserved characters, except backslash, to be recognized).
360 Fix invalid transact2 message (we were sometimes trying to interpret
361 oplock breaks as SMB responses). Add ioctl for checking that the
362 current uid matches the uid of the mounter (needed by umount.cifs).
363 Reduce the number of large buffer allocations in cifs response processing
364 (significantly reduces memory pressure under heavy stress with multiple
365 processes accessing the same server at the same time).
369 Fix updates of DOS attributes and time fields so that files on NT4 servers
370 do not get marked delete on close. Display sizes of cifs buffer pools in
371 cifs stats. Fix oops in unmount when cifsd thread being killed by
372 shutdown. Add generic readv/writev and aio support. Report inode numbers
373 consistently in readdir and lookup (when serverino mount option is
374 specified use the inode number that the server reports - for both lookup
375 and readdir, otherwise by default the locally generated inode number is used
376 for inodes created in either path since servers are not always able to
377 provide unique inode numbers when exporting multiple volumes from under one
382 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
383 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
384 (mostly affects NT4 servers) by retry with handle based network operation.
385 Add new POSIX Query FS Info for returning statfs info more accurately.
386 Handle passwords with multiple commas in them.
390 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
391 Fix capabilities flags for large readx so as to allow reads larger than 64K.
395 Add module init parm for large SMB buffer size (to allow it to be changed
396 from its default of 16K) which is especially useful for large file copy
397 when mounting with the directio mount option. Fix oops after
398 returning from mount when experimental ExtendedSecurity enabled and
399 SpnegoNegotiated returning invalid error. Fix case to retry better when
400 peek returns from 1 to 3 bytes on socket which should have more data.
401 Fixed path based calls (such as cifs lookup) to handle path names
402 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
403 from Samba server to DC (Samba required dummy LM password).
407 Turn off DNOTIFY (directory change notification support) by default
408 (unless built with the experimental flag) to fix hang with KDE
409 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
410 waiting on an SMB response) in SendReceive when session dies but
411 reconnects quickly from another task. Add module init parms for
412 minimum number of large and small network buffers in the buffer pools,
413 and for the maximum number of simultaneous requests.
417 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
418 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
419 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
420 improperly zeroed buffer in CIFS Unix extensions set times call.
424 Fix internationalization problem in cifs readdir with filenames that map to
425 longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
426 for readdir to netapp servers. Fix search rewind (seek into readdir to return
427 non-consecutive entries). Do not do readdir when server negotiates
428 buffer size to small to fit filename. Add support for reading POSIX ACLs from
429 the server (add also acl and noacl mount options).
433 Optionally allow using server side inode numbers, rather than client generated
434 ones by specifying mount option "serverino" - this is required for some apps
435 to work which double check hardlinked files and have persistent inode numbers.
439 Multiple bigendian fixes. On little endian systems (for reconnect after
440 network failure) fix tcp session reconnect code so we do not try first
441 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
442 as directories rather than symlinks because we can do follow link on them.
446 Add config option to enable XATTR (extended attribute) support, mapping
447 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
448 minor fixes pointed out by the Stanford SWAT checker (mostly missing
449 or out of order NULL pointer checks in little used error paths).
453 Add new mount parm to control whether mode check (generic_permission) is done
454 on the client. If Unix extensions are enabled and the uids on the client
455 and server do not match, client permission checks are meaningless on
456 server uids that do not exist on the client (this does not affect the
457 normal ACL check which occurs on the server). Fix default uid
458 on mknod to match create and mkdir. Add optional mount parm to allow
459 override of the default uid behavior (in which the server sets the uid
460 and gid of newly created files). Normally for network filesystem mounts
461 user want the server to set the uid/gid on newly created files (rather than
462 using uid of the client processes you would in a local filesystem).
466 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
467 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
468 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
469 (block/char/fifo) properly. Remove spurious mount warning log entry when
470 credentials passed as mount argument. Set major/minor device number in
471 inode for block and char devices when unix extensions enabled.
475 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
476 amounts of return data. Properly limit requests to MAX_REQ (50
477 is the usual maximum active multiplex SMB/CIFS requests per server).
478 Do not kill cifsd (and thus hurt the other SMB session) when more than one
479 session to the same server (but with different userids) exists and one
480 of the two user's smb sessions is being removed while leaving the other.
481 Do not loop reconnecting in cifsd demultiplex thread when admin
482 kills the thread without going through unmount.
486 Do not rename hardlinked files (since that should be a noop). Flush
487 cached write behind data when reopening a file after session abend,
488 except when already in write. Grab per socket sem during reconnect
489 to avoid oops in sendmsg if overlapping with reconnect. Do not
490 reset cached inode file size on readdir for files open for write on
496 Update number of blocks in file so du command is happier (in Linux a fake
497 blocksize of 512 is required for calculating number of blocks in inode).
498 Fix prepare write of partial pages to read in data from server if possible.
499 Fix race on tcpStatus field between unmount and reconnection code, causing
500 cifsd process sometimes to hang around forever. Improve out of memory
501 checks in cifs_filldir
505 Fix incorrect file size in file handle based setattr on big endian hardware.
506 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
507 and closing file structs in writepage/partialpagewrite. Add statistics
508 for each mounted share (new menuconfig option). Fix endianness problem in
509 volume information displayed in /proc/fs/cifs/DebugData (only affects
510 affects big endian architectures). Prevent renames while constructing
511 path names for open, mkdir and rmdir.
515 Change to mempools for alloc smb request buffers and multiplex structs
516 to better handle low memory problems (and potential deadlocks).
520 Fix incomplete listings of large directories on Samba servers when Unix
521 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
522 rename deadlock when writing out dirty pages at same time.
526 Fix open of files in which O_CREATE can cause the mode to change in
527 some cases. Fix case in which retry of write overlaps file close.
528 Fix PPC64 build error. Reduce excessive stack usage in smb password
529 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
533 Fixes for large file copy, signal handling, socket retry, buffer
534 allocation and low memory situations.
538 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
539 also now allowing support for specifying client netbiosname. NT4 support added.
543 Fix reconnection (and certain failed mounts) to properly wake up the
544 blocked users thread so it does not seem hung (in some cases was blocked
545 until the cifs receive timeout expired). Fix spurious error logging
546 to kernel log when application with open network files killed.
550 Fix /proc/fs module unload warning message (that could be logged
551 to the kernel log). Fix intermittent failure in connectathon
552 test7 (hardlink count not immediately refreshed in case in which
553 inode metadata can be incorrectly kept cached when time near zero)
557 Allow file_mode and dir_mode (specified at mount time) to be enforced
558 locally (the server already enforced its own ACLs too) for servers
559 that do not report the correct mode (do not support the
560 CIFS Unix Extensions).
564 Fix some small memory leaks in some unmount error paths. Fix major leak
565 of cache pages in readpages causing multiple read oriented stress
566 testcases (including fsx, and even large file copy) to fail over time.
570 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
571 This allows files that differ only in case and improves performance of file
572 creation and file open to such servers. Fix semaphore conflict which causes
573 slow delete of open file to Samba (which unfortunately can cause an oplock
574 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
578 fixes to cifs_readpages for fsx test case
582 Fix caching data integrity bug when extending file size especially when no
583 oplock on file. Fix spurious logging of valid already parsed mount options
584 that are parsed outside of the cifs vfs such as nosuid.
589 Connect to server when port number override not specified, and tcp port
590 unitialized. Reset search to restart at correct file when kernel routine
591 filldir returns error during large directory searches (readdir).
595 Fix caching problem when files opened by multiple clients in which
596 page cache could contain stale data, and write through did
597 not occur often enough while file was still open when read ahead
598 (read oplock) not allowed. Treat "sep=" when first mount option
599 as an override of comma as the default separator between mount
604 Allow passwords longer than 16 bytes. Allow null password string.
608 Gracefully clean up failed mounts when attempting to mount to servers such as
609 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
610 embedded commas in mount parsing of passwords.
614 Invalidate local inode cached pages on oplock break and when last file
615 instance is closed so that the client does not continue using stale local
616 copy rather than later modified server copy of file. Do not reconnect
617 when server drops the tcp session prematurely before negotiate
618 protocol response. Fix oops in reopen_file when dentry freed. Allow
619 the support for CIFS Unix Extensions to be disabled via proc interface.
623 Fix hang in commit_write during reconnection of open files under heavy load.
624 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
625 which also fixes any possible races when cifs signatures are enabled in SMBs
626 being sent out of signature sequence number order.
630 Fix byte range locking bug (endian problem) causing bad offset and
635 Fix oops (in send_sig) caused by CIFS unmount code trying to
636 wake up the demultiplex thread after it had exited. Do not log
637 error on harmless oplock release of closed handle.
641 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
642 Fix problem reconnecting secondary mounts to same server after session
643 failure. Fix invalid dentry - race in mkdir when directory gets created
644 by another client between the lookup and mkdir.
648 Fix to list processing in reopen_files. Fix reconnection when server hung
649 but tcpip session still alive. Set proper timeout on socket read.
653 Add missing mount options including iocharset. SMP fixes in write and open.
654 Fix errors in reconnecting after TCP session failure. Fix module unloading
655 of default nls codepage
659 Active smb transactions should never go negative (fix double FreeXid). Fix
660 list processing in file routines. Check return code on kmalloc in open.
661 Fix spinlock usage for SMP.
665 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
666 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
667 on create hard link when server does not support them.
671 Fix scheduling while atomic error in getting inode info on newly created file.
672 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
676 Fix oops on write to dead tcp session. Remove error log write for case when file open
677 O_CREAT but not O_EXCL
681 Fix non-POSIX behavior on rename of open file and delete of open file by taking
682 advantage of trans2 SetFileInfo rename facility if available on target server.
683 Retry on ENOSPC and EAGAIN socket errors.
687 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
688 allocation size miscalculation. After oplock token lost do not read through
693 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
697 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
698 during auto reconnection to server after server recovered from failure.
702 Finish support for Linux 2.5 open/create changes, which removes the
703 redundant NTCreate/QPathInfo/close that was sent during file create.
704 Enable oplock by default. Enable packet signing by default (needed to
705 access many recent Windows servers)
709 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
710 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
711 we will choose a cifs user session (smb uid) that better matches the local
712 uid if a) the mount uid does not match the current uid and b) we have another
713 session to the same server (ip address) for a different mount which
714 matches the current local uid.
718 Add support for mknod of block or character devices. Fix oplock
719 code (distributed caching) to properly send response to oplock
724 Finish up CIFS packet digital signing for the default
725 NTLM security case. This should help Windows 2003
726 network interoperability since it is common for
727 packet signing to be required now. Fix statfs (stat -f)
728 which recently started returning errors due to
729 invalid value (-1 instead of 0) being set in the
730 struct kstatfs f_ffiles field.
734 Fix oops on stopping oplock thread when removing cifs when
739 Fix mount options for ro (readonly), uid, gid and file and directory mode.
743 Fix errors displayed on failed mounts to be more understandable.
744 Fixed various incorrect or misleading smb to posix error code mappings.
748 Fix display of NTFS DFS junctions to display as symlinks.
749 They are the network equivalent. Fix oops in
750 cifs_partialpagewrite caused by missing spinlock protection
751 of openfile linked list. Allow writebehind caching errors to
752 be returned to the application at file close.
756 Clean up options displayed in /proc/mounts by show_options to
757 be more consistent with other filesystems.
761 Fix delete of readonly file to Windows servers. Reflect
762 presence or absence of read only dos attribute in mode
763 bits for servers that do not support CIFS Unix extensions.
764 Fix shortened results on readdir of large directories to
765 servers supporting CIFS Unix extensions (caused by
766 incorrect resume key).
770 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
774 unload nls if mount fails.
778 Add resume key support to search (readdir) code to workaround
779 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
780 allows disabling caching of attribute information for
785 Add more oplock handling (distributed caching code). Remove
786 dead code. Remove excessive stack space utilization from
791 Fix oops in get dfs referral (triggered when null path sent in to
792 mount). Add support for overriding rsize at mount time.
796 Fix buffer overrun in readdir which caused intermittent kernel oopses.
797 Fix writepage code to release kmap on write data. Allow "-ip=" new
798 mount option to be passed in on parameter distinct from the first part
799 (server name portion of) the UNC name. Allow override of the
800 tcp port of the target server via new mount option "-port="
804 Fix search handle leak on rewind. Fix setuid and gid so that they are
805 reflected in the local inode immediately. Cleanup of whitespace
806 to make 2.4 and 2.5 versions more consistent.
811 Fix signal sending so that captive thread (cifsd) exits on umount
812 (which was causing the warning in kmem_cache_free of the request buffers
813 at rmmod time). This had broken as a sideeffect of the recent global
814 kernel change to daemonize. Fix memory leak in readdir code which
815 showed up in "ls -R" (and applications that did search rewinding).
819 Reconnect tids and fids after session reconnection (still do not
820 reconnect byte range locks though). Fix problem caching
821 lookup information for directory inodes, improving performance,
822 especially in deep directory trees. Fix various build warnings.
826 Finish fixes to commit write for caching/readahead consistency. fsx
827 now works to Samba servers. Fix oops caused when readahead
828 was interrupted by a signal.
832 Fix data corruption (in partial page after truncate) that caused fsx to
833 fail to Windows servers. Cleaned up some extraneous error logging in
834 common error paths. Add generic sendfile support.
838 Fix memory leak in AllocMidQEntry.
839 Finish reconnection logic, so connection with server can be dropped
840 (or server rebooted) and the cifs client will reconnect.
844 Fix temporary socket leak when bad userid or password specified
845 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
846 over 16K to allow negotiation of up to Samba and Windows server default read
847 sizes. Add support for readpages
851 Fix oops when username not passed in on mount. Extensive fixes and improvements
852 to error logging (strip redundant newlines, change debug macros to ensure newline
853 passed in and to be more consistent). Fix writepage wrong file handle problem,
854 a readonly file handle could be incorrectly used to attempt to write out
855 file updates through the page cache to multiply open files. This could cause
856 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
857 shares to the same Windows server when using different usernames
858 (doing this to Samba servers worked but Windows was rejecting it) - now it is
859 possible to use different userids when connecting to the same server from a
860 Linux client. Fix oops when treeDisconnect called during unmount on
861 previously freed socket.
865 Fix oops in readpages caused by not setting address space operations in inode in
870 Includes support for deleting of open files and renaming over existing files (per POSIX
871 requirement). Add readlink support for Windows junction points (directory symlinks).
875 Changed read and write to go through pagecache. Added additional address space operations.
876 Memory mapped operations now working.
880 Added writepage code for additional memory mapping support. Fixed leak in xids causing
881 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
882 every stat call. Additional formatting cleanup.
886 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
890 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
891 Also included a modified version of his fix to protect global list manipulation of
892 the smb session and tree connection and mid related global variables.
896 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
897 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
898 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
902 More stylistic updates to better match kernel style. Add additional statistics
903 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
904 and CIFS Packet Signing enablement.
908 Replace call to sleep_on with safer wait_on_event.
909 Make stylistic changes to better match kernel style recommendations.
910 Remove most typedef usage (except for the PDUs themselves).
914 Update mount so the -unc mount option is no longer required (the ip address can be specified
915 in a UNC style device name. Implementation of readpage/writepage started.
919 Fix intermittent problem with incorrect smb header checking on badly
920 fragmented tcp responses
924 Fixes to setting of allocation size and file size.
928 Various 2.5.38 fixes. Now works on 2.5.38
932 Prepare for 2.5 kernel merge. Remove ifdefs.
936 Socket buffer management fixes. Fix dual free.
940 Various big endian fixes for hardlinks and symlinks and also for dfs.
944 Various big endian fixes for servers with Unix extensions such as Samba
948 Various FindNext fixes for incorrect filenames on large directory searches on big endian
949 clients. basic posix file i/o tests now work on big endian machines, not just le
953 SessionSetup and NegotiateProtocol now work from Big Endian machines.
954 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
955 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
959 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
960 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
964 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
965 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
966 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
967 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
971 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
972 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
976 Rewrote much of connection and mount/unmount logic to handle bugs with
977 multiple uses to same share, multiple users to same server etc.
981 Fixed major problem with dentry corruption (missing call to dput)
985 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
986 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
987 although corresponding function not fully implemented in the vfs yet
991 Fixed dentry caching bug, misc. cleanup
995 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
996 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
997 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
1001 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
1002 and tested against Samba 2.2.5
1007 1) Fixed lockrange to be correct (it was one byte too short)
1009 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
1010 show range as locked when there is a conflict with an existing lock.
1012 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
1013 in most cases. Eventually will offer optional ability to query server for the correct perms.
1015 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
1016 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
1019 4) Fixed error logging of valid mount options
1021 5) Removed logging of password field.
1023 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
1024 and cleaned them up and made them more consistent with other cifs functions.
1026 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
1027 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1028 nor is the symlink support using the Unix extensions
1030 8) Started adding the readlink and follow_link code
projects / linux-2.6 / blob