3 Guard against buffer overruns in various UCS-2 to UTF-8 string conversions
4 when the UTF-8 string is composed of unusually long (more than 4 byte) converted
5 characters. Add support for mounting root of a share which redirects immediately
6 to DFS target. Convert string conversion functions from Unicode to more
7 accurately mark string length before allocating memory (which may help the
8 rare cases where a UTF-8 string is much larger than the UCS2 string that
9 we converted from). Fix endianness of the vcnum field used during
10 session setup to distinguish multiple mounts to same server from different
11 userids. Raw NTLMSSP fixed (it requires /proc/fs/cifs/experimental
12 flag to be set to 2, and mount must enable krb5 to turn on extended security).
16 Improve support for multiple security contexts to the same server. We
17 used to use the same "vcnumber" for all connections which could cause
18 the server to treat subsequent connections, especially those that
19 are authenticated as guest, as reconnections, invalidating the earlier
20 user's smb session. This fix allows cifs to mount multiple times to the
21 same server with different userids without risking invalidating earlier
22 established security contexts. fsync now sends SMB Flush operation
23 to better ensure that we wait for server to write all of the data to
24 server disk (not just write it over the network). Add new mount
25 parameter to allow user to disable sending the (slow) SMB flush on
26 fsync if desired (fsync still flushes all cached write data to the server).
27 Posix file open support added (turned off after one attempt if server
28 fails to support it properly, as with Samba server versions prior to 3.3.2)
29 Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
30 little memory for the "nativeFileSystem" field returned by the server
31 during mount). Endian convert inode numbers if necessary (makes it easier
32 to compare inode numbers on network files from big endian systems).
36 Add "forcemandatorylock" mount option to allow user to use mandatory
37 rather than posix (advisory) byte range locks, even though server would
38 support posix byte range locks. Fix query of root inode when prefixpath
39 specified and user does not have access to query information about the
40 top of the share. Fix problem in 2.6.28 resolving DFS paths to
41 Samba servers (worked to Windows). Fix rmdir so that pending search
42 (readdir) requests do not get invalid results which include the now
43 removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
44 when using DFS. Add better file create support to servers which support
45 the CIFS POSIX protocol extensions (this adds support for new flags
46 on create, and improves semantics for write of locked ranges).
50 Various fixes to make delete of open files behavior more predictable
51 (when delete of an open file fails we mark the file as "delete-on-close"
52 in a way that more servers accept, but only if we can first rename the
53 file to a temporary name). Add experimental support for more safely
54 handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
55 sends, and also let tcp autotune the socket send and receive buffers.
56 This reduces the number of EAGAIN errors returned by TCP/IP in
57 high stress workloads (and the number of retries on socket writes
58 when sending large SMBWriteX requests). Fix case in which a portion of
59 data can in some cases not get written to the file on the server before the
60 file is closed. Fix DFS parsing to properly handle path consumed field,
61 and to handle certain codepage conversions better. Fix mount and
62 umount race that can cause oops in mount or umount or reconnect.
66 Fix premature write failure on congested networks (we would give up
67 on EAGAIN from the socket too quickly on large writes).
68 Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
69 Fix endian problems in acl (mode from/to cifs acl) on bigendian
70 architectures. Fix problems with preserving timestamps on copying open
71 files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit
72 on parent directory when server supports Unix Extensions but not POSIX
73 create. Update cifs.upcall version to handle new Kerberos sec flags
74 (this requires update of cifs.upcall program from Samba). Fix memory leak
75 on dns_upcall (resolving DFS referralls). Fix plain text password
76 authentication (requires setting SecurityFlags to 0x30030 to enable
77 lanman and plain text though). Fix writes to be at correct offset when
78 file is open with O_APPEND and file is on a directio (forcediretio) mount.
79 Fix bug in rewinding readdir directory searches. Add nodfs mount option.
83 DFS support added (Microsoft Distributed File System client support needed
84 for referrals which enable a hierarchical name space among servers).
85 Disable temporary caching of mode bits to servers which do not support
86 storing of mode (e.g. Windows servers, when client mounts without cifsacl
87 mount option) and add new "dynperm" mount option to enable temporary caching
88 of mode (enable old behavior). Fix hang on mount caused when server crashes
89 tcp session during negotiate protocol.
93 Fix oops on second mount to server when null auth is used.
94 Enable experimental Kerberos support. Return writebehind errors on flush
95 and sync so that events like out of disk space get reported properly on
96 cached files. Fix setxattr failure to certain Samba versions. Fix mount
97 of second share to disconnected server session (autoreconnect on this).
98 Add ability to modify cifs acls for handling chmod (when mounted with
99 cifsacl flag). Fix prefixpath path separator so we can handle mounts
100 with prefixpaths longer than one directory (one path component) when
101 mounted to Windows servers. Fix slow file open when cifsacl
102 enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
107 Fix memory leak in statfs when mounted to very old servers (e.g.
108 Windows 9x). Add new feature "POSIX open" which allows servers
109 which support the current POSIX Extensions to provide better semantics
110 (e.g. delete for open files opened with posix open). Take into
111 account umask on posix mkdir not just older style mkdir. Add
112 ability to mount to IPC$ share (which allows CIFS named pipes to be
113 opened, read and written as if they were files). When 1st tree
114 connect fails (e.g. due to signing negotiation failure) fix
115 leak that causes cifsd not to stop and rmmod to fail to cleanup
116 cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
117 bigendian architectures. Fix possible memory corruption when
118 EAGAIN returned on kern_recvmsg. Return better error if server
119 requires packet signing but client has disabled it. When mounted
120 with cifsacl mount option - mode bits are approximated based
121 on the contents of the ACL of the file or directory. When cifs
122 mount helper is missing convert make sure that UNC name
123 has backslash (not forward slash) between ip address of server
128 Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
129 done with "serverino" mount option). Add support for POSIX Unlink
130 (helps with certain sharing violation cases when server such as
131 Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
132 mount option to allow disabling the CIFS Unix Extensions for just
133 that mount. Fix hang on spinlock in find_writable_file (race when
134 reopening file after session crash). Byte range unlock request to
135 windows server could unlock more bytes (on server copy of file)
136 than intended if start of unlock request is well before start of
137 a previous byte range lock that we issued.
141 IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
142 address after the "ip=" mount option, at least until mount.cifs is fixed to
143 handle DNS host to ipv6 name translation). Accept override of uid or gid
144 on mount even when Unix Extensions are negotiated (it used to be ignored
145 when Unix Extensions were ignored). This allows users to override the
146 default uid and gid for files when they are certain that the uids or
147 gids on the server do not match those of the client. Make "sec=none"
148 mount override username (so that null user connection is attempted)
149 to match what documentation said. Support for very large reads, over 127K,
150 available to some newer servers (such as Samba 3.0.26 and later but
151 note that it also requires setting CIFSMaxBufSize at module install
152 time to a larger value which may hurt performance in some cases).
153 Make sign option force signing (or fail if server does not support it).
157 Fix mtime bouncing around from local idea of last write times to remote time.
158 Fix hang (in i_size_read) when simultaneous size update of same remote file
159 on smp system corrupts sequence number. Do not reread unnecessarily partial page
160 (which we are about to overwrite anyway) when writing out file opened rw.
161 When DOS attribute of file on non-Unix server's file changes on the server side
162 from read-only back to read-write, reflect this change in default file mode
163 (we had been leaving a file's mode read-only until the inode were reloaded).
164 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
165 when archive dos attribute not set and we are changing mode back to writeable
166 on server which does not support the Unix Extensions). Remove read only dos
167 attribute on chmod when adding any write permission (ie on any of
168 user/group/other (not all of user/group/other ie 0222) when
169 mounted to windows. Add support for POSIX MkDir (slight performance
170 enhancement and eliminates the network race between the mkdir and set
171 path info of the mode).
176 Fix oops in list_del during mount caused by unaligned string.
177 Fix file corruption which could occur on some large file
178 copies caused by writepages page i/o completion bug.
179 Seek to SEEK_END forces check for update of file size for non-cached
180 files. Allow file size to be updated on remote extend of locally open,
181 non-cached file. Fix reconnect to newer Samba servers (or other servers
182 which support the CIFS Unix/POSIX extensions) so that we again tell the
183 server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
184 Add experimental support for new POSIX Open/Mkdir (which returns
185 stat information on the open, and allows setting the mode).
189 Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps.
190 Allow null user to be specified on mount ("username="). Do not return
191 EINVAL on readdir when filldir fails due to overwritten blocksize
192 (fixes FC problem). Return error in rename 2nd attempt retry (ie report
193 if rename by handle also fails, after rename by path fails, we were
194 not reporting whether the retry worked or not). Fix NTLMv2 to
195 work to Windows servers (mount with option "sec=ntlmv2").
199 Do not time out lockw calls when using posix extensions. Do not
200 time out requests if server still responding reasonably fast
201 on requests on other threads. Improve POSIX locking emulation,
202 (lock cancel now works, and unlock of merged range works even
203 to Windows servers now). Fix oops on mount to lanman servers
204 (win9x, os/2 etc.) when null password. Do not send listxattr
205 (SMB to query all EAs) if nouser_xattr specified. Fix SE Linux
206 problem (instantiate inodes/dentries in right order for readdir).
210 Rewritten sessionsetup support, including support for legacy SMB
211 session setup needed for OS/2 and older servers such as Windows 95 and 98.
212 Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst
213 so we can do search (ls etc.) to OS/2. Do not send NTCreateX
214 or recent levels of FindFirst unless server says it supports NT SMBs
215 (instead use legacy equivalents from LANMAN dialect). Fix to allow
216 NTLMv2 authentication support (now can use stronger password hashing
217 on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
218 Allow override of global cifs security flags on mount via "sec=" option(s).
222 POSIX locking to servers which support CIFS POSIX Extensions
223 (disabled by default controlled by proc/fs/cifs/Experimental).
224 Handle conversion of long share names (especially Asian languages)
225 to Unicode during mount. Fix memory leak in sess struct on reconnect.
226 Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on
227 cifs open which helps rare case when setpathinfo fails or server does
232 Fix slow oplock break when mounted to different servers at the same time and
233 the tids match and we try to find matching fid on wrong server. Fix read
234 looping when signing required by server (2.6.16 kernel only). Fix readdir
235 vs. rename race which could cause each to hang. Return . and .. even
236 if server does not. Allow searches to skip first three entries and
237 begin at any location. Fix oops in find_writeable_file.
241 Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
242 configure stronger authentication. Fix sfu symlinks so they can
243 be followed (not just recognized). Fix wraparound of bcc on
244 read responses when buffer size over 64K and also fix wrap of
245 max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in
246 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
247 on socket is returned over and over). Add POSIX (advisory) byte range
248 locking support (requires server with newest CIFS UNIX Extensions
249 to the protocol implemented). Slow down negprot slightly in port 139
250 RFC1001 case to give session_init time on buggy servers.
254 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
255 of readpages by eliminating one extra memcpy. Allow update of file size
256 from remote server even if file is open for write as long as mount is
257 directio. Recognize share mode security and send NTLM encrypted password
258 on tree connect if share mode negotiated.
262 Defer close of a file handle slightly if pending writes depend on that handle
263 (this reduces the EBADF bad file handle errors that can be logged under heavy
264 stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2
265 Fix SFU style symlinks and mknod needed for servers which do not support the
266 CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative
267 dentries so files that the client sees as deleted but that later get created
268 on the server will be recognized. Add client side permission check on setattr.
269 Timeout stuck requests better (where server has never responded or sent corrupt
274 Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
275 to be smaller at first (but increasing) so large write performance performance
276 over GigE is better. Do not hang thread on illegal byte range lock response
277 from Windows (Windows can send an RFC1001 size which does not match smb size) by
278 allowing an SMBs TCP length to be up to a few bytes longer than it should be.
279 wsize and rsize can now be larger than negotiated buffer size if server
280 supports large readx/writex, even when directio mount flag not specified.
281 Write size will in many cases now be 16K instead of 4K which greatly helps
282 file copy performance on lightly loaded networks. Fix oops in dnotify
283 when experimental config flag enabled. Make cifsFYI more granular.
287 Fix readdir caching when unlink removes file in current search buffer,
288 and this is followed by a rewind search to just before the deleted entry.
289 Do not attempt to set ctime unless atime and/or mtime change requested
290 (most servers throw it away anyway). Fix length check of received smbs
291 to be more accurate. Fix big endian problem with mapchars mount option,
292 and with a field returned by statfs.
296 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
297 For these older servers, add option for passing netbios name of server in
298 on mount (servernetbiosname). Add suspend support for power management, to
299 avoid cifsd thread preventing software suspend from working.
300 Add mount option for disabling the default behavior of sending byte range lock
301 requests to the server (necessary for certain applications which break with
302 mandatory lock behavior such as Evolution), and also mount option for
303 requesting case insensitive matching for path based requests (requesting
304 case sensitive is the default).
308 Add writepage performance improvements. Fix path name conversions
309 for long filenames on mounts which were done with "mapchars" mount option
310 specified. Ensure multiplex ids do not collide. Fix case in which
311 rmmod can oops if done soon after last unmount. Fix truncated
312 search (readdir) output when resume filename was a long filename.
313 Fix filename conversion when mapchars mount option was specified and
314 filename was a long filename.
318 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
319 Do not oops if root user kills cifs oplock kernel thread or
320 kills the cifsd thread (NB: killing the cifs kernel threads is not
321 recommended, unmount and rmmod cifs will kill them when they are
322 no longer needed). Fix readdir to ASCII servers (ie older servers
323 which do not support Unicode) and also require asterisk.
324 Fix out of memory case in which data could be written one page
325 off in the page cache.
329 Fix caching problem, in which readdir of directory containing a file
330 which was cached could cause the file's time stamp to be updated
331 without invalidating the readahead data (so we could get stale
332 file data on the client for that file even as the server copy changed).
333 Cleanup response processing so cifsd can not loop when abnormally
339 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
340 transact response for an SMB request and search entry split across two frames.
341 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
342 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
343 unless server explicitly claims to support them in CIFS Unix extensions
344 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
345 different users from the same client to the same server. Fix oops in
346 cifs_close. Add mount option for remapping reserved characters in
347 filenames (also allow recognizing files with created by SFU which have any
348 of these seven reserved characters, except backslash, to be recognized).
349 Fix invalid transact2 message (we were sometimes trying to interpret
350 oplock breaks as SMB responses). Add ioctl for checking that the
351 current uid matches the uid of the mounter (needed by umount.cifs).
352 Reduce the number of large buffer allocations in cifs response processing
353 (significantly reduces memory pressure under heavy stress with multiple
354 processes accessing the same server at the same time).
358 Fix updates of DOS attributes and time fields so that files on NT4 servers
359 do not get marked delete on close. Display sizes of cifs buffer pools in
360 cifs stats. Fix oops in unmount when cifsd thread being killed by
361 shutdown. Add generic readv/writev and aio support. Report inode numbers
362 consistently in readdir and lookup (when serverino mount option is
363 specified use the inode number that the server reports - for both lookup
364 and readdir, otherwise by default the locally generated inode number is used
365 for inodes created in either path since servers are not always able to
366 provide unique inode numbers when exporting multiple volumes from under one
371 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
372 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
373 (mostly affects NT4 servers) by retry with handle based network operation.
374 Add new POSIX Query FS Info for returning statfs info more accurately.
375 Handle passwords with multiple commas in them.
379 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
380 Fix capabilities flags for large readx so as to allow reads larger than 64K.
384 Add module init parm for large SMB buffer size (to allow it to be changed
385 from its default of 16K) which is especially useful for large file copy
386 when mounting with the directio mount option. Fix oops after
387 returning from mount when experimental ExtendedSecurity enabled and
388 SpnegoNegotiated returning invalid error. Fix case to retry better when
389 peek returns from 1 to 3 bytes on socket which should have more data.
390 Fixed path based calls (such as cifs lookup) to handle path names
391 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
392 from Samba server to DC (Samba required dummy LM password).
396 Turn off DNOTIFY (directory change notification support) by default
397 (unless built with the experimental flag) to fix hang with KDE
398 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
399 waiting on an SMB response) in SendReceive when session dies but
400 reconnects quickly from another task. Add module init parms for
401 minimum number of large and small network buffers in the buffer pools,
402 and for the maximum number of simultaneous requests.
406 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
407 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
408 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
409 improperly zeroed buffer in CIFS Unix extensions set times call.
413 Fix internationalization problem in cifs readdir with filenames that map to
414 longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
415 for readdir to netapp servers. Fix search rewind (seek into readdir to return
416 non-consecutive entries). Do not do readdir when server negotiates
417 buffer size to small to fit filename. Add support for reading POSIX ACLs from
418 the server (add also acl and noacl mount options).
422 Optionally allow using server side inode numbers, rather than client generated
423 ones by specifying mount option "serverino" - this is required for some apps
424 to work which double check hardlinked files and have persistent inode numbers.
428 Multiple bigendian fixes. On little endian systems (for reconnect after
429 network failure) fix tcp session reconnect code so we do not try first
430 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
431 as directories rather than symlinks because we can do follow link on them.
435 Add config option to enable XATTR (extended attribute) support, mapping
436 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
437 minor fixes pointed out by the Stanford SWAT checker (mostly missing
438 or out of order NULL pointer checks in little used error paths).
442 Add new mount parm to control whether mode check (generic_permission) is done
443 on the client. If Unix extensions are enabled and the uids on the client
444 and server do not match, client permission checks are meaningless on
445 server uids that do not exist on the client (this does not affect the
446 normal ACL check which occurs on the server). Fix default uid
447 on mknod to match create and mkdir. Add optional mount parm to allow
448 override of the default uid behavior (in which the server sets the uid
449 and gid of newly created files). Normally for network filesystem mounts
450 user want the server to set the uid/gid on newly created files (rather than
451 using uid of the client processes you would in a local filesystem).
455 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
456 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
457 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
458 (block/char/fifo) properly. Remove spurious mount warning log entry when
459 credentials passed as mount argument. Set major/minor device number in
460 inode for block and char devices when unix extensions enabled.
464 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
465 amounts of return data. Properly limit requests to MAX_REQ (50
466 is the usual maximum active multiplex SMB/CIFS requests per server).
467 Do not kill cifsd (and thus hurt the other SMB session) when more than one
468 session to the same server (but with different userids) exists and one
469 of the two user's smb sessions is being removed while leaving the other.
470 Do not loop reconnecting in cifsd demultiplex thread when admin
471 kills the thread without going through unmount.
475 Do not rename hardlinked files (since that should be a noop). Flush
476 cached write behind data when reopening a file after session abend,
477 except when already in write. Grab per socket sem during reconnect
478 to avoid oops in sendmsg if overlapping with reconnect. Do not
479 reset cached inode file size on readdir for files open for write on
485 Update number of blocks in file so du command is happier (in Linux a fake
486 blocksize of 512 is required for calculating number of blocks in inode).
487 Fix prepare write of partial pages to read in data from server if possible.
488 Fix race on tcpStatus field between unmount and reconnection code, causing
489 cifsd process sometimes to hang around forever. Improve out of memory
490 checks in cifs_filldir
494 Fix incorrect file size in file handle based setattr on big endian hardware.
495 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
496 and closing file structs in writepage/partialpagewrite. Add statistics
497 for each mounted share (new menuconfig option). Fix endianness problem in
498 volume information displayed in /proc/fs/cifs/DebugData (only affects
499 affects big endian architectures). Prevent renames while constructing
500 path names for open, mkdir and rmdir.
504 Change to mempools for alloc smb request buffers and multiplex structs
505 to better handle low memory problems (and potential deadlocks).
509 Fix incomplete listings of large directories on Samba servers when Unix
510 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
511 rename deadlock when writing out dirty pages at same time.
515 Fix open of files in which O_CREATE can cause the mode to change in
516 some cases. Fix case in which retry of write overlaps file close.
517 Fix PPC64 build error. Reduce excessive stack usage in smb password
518 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
522 Fixes for large file copy, signal handling, socket retry, buffer
523 allocation and low memory situations.
527 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
528 also now allowing support for specifying client netbiosname. NT4 support added.
532 Fix reconnection (and certain failed mounts) to properly wake up the
533 blocked users thread so it does not seem hung (in some cases was blocked
534 until the cifs receive timeout expired). Fix spurious error logging
535 to kernel log when application with open network files killed.
539 Fix /proc/fs module unload warning message (that could be logged
540 to the kernel log). Fix intermittent failure in connectathon
541 test7 (hardlink count not immediately refreshed in case in which
542 inode metadata can be incorrectly kept cached when time near zero)
546 Allow file_mode and dir_mode (specified at mount time) to be enforced
547 locally (the server already enforced its own ACLs too) for servers
548 that do not report the correct mode (do not support the
549 CIFS Unix Extensions).
553 Fix some small memory leaks in some unmount error paths. Fix major leak
554 of cache pages in readpages causing multiple read oriented stress
555 testcases (including fsx, and even large file copy) to fail over time.
559 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
560 This allows files that differ only in case and improves performance of file
561 creation and file open to such servers. Fix semaphore conflict which causes
562 slow delete of open file to Samba (which unfortunately can cause an oplock
563 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
567 fixes to cifs_readpages for fsx test case
571 Fix caching data integrity bug when extending file size especially when no
572 oplock on file. Fix spurious logging of valid already parsed mount options
573 that are parsed outside of the cifs vfs such as nosuid.
578 Connect to server when port number override not specified, and tcp port
579 unitialized. Reset search to restart at correct file when kernel routine
580 filldir returns error during large directory searches (readdir).
584 Fix caching problem when files opened by multiple clients in which
585 page cache could contain stale data, and write through did
586 not occur often enough while file was still open when read ahead
587 (read oplock) not allowed. Treat "sep=" when first mount option
588 as an override of comma as the default separator between mount
593 Allow passwords longer than 16 bytes. Allow null password string.
597 Gracefully clean up failed mounts when attempting to mount to servers such as
598 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
599 embedded commas in mount parsing of passwords.
603 Invalidate local inode cached pages on oplock break and when last file
604 instance is closed so that the client does not continue using stale local
605 copy rather than later modified server copy of file. Do not reconnect
606 when server drops the tcp session prematurely before negotiate
607 protocol response. Fix oops in reopen_file when dentry freed. Allow
608 the support for CIFS Unix Extensions to be disabled via proc interface.
612 Fix hang in commit_write during reconnection of open files under heavy load.
613 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
614 which also fixes any possible races when cifs signatures are enabled in SMBs
615 being sent out of signature sequence number order.
619 Fix byte range locking bug (endian problem) causing bad offset and
624 Fix oops (in send_sig) caused by CIFS unmount code trying to
625 wake up the demultiplex thread after it had exited. Do not log
626 error on harmless oplock release of closed handle.
630 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
631 Fix problem reconnecting secondary mounts to same server after session
632 failure. Fix invalid dentry - race in mkdir when directory gets created
633 by another client between the lookup and mkdir.
637 Fix to list processing in reopen_files. Fix reconnection when server hung
638 but tcpip session still alive. Set proper timeout on socket read.
642 Add missing mount options including iocharset. SMP fixes in write and open.
643 Fix errors in reconnecting after TCP session failure. Fix module unloading
644 of default nls codepage
648 Active smb transactions should never go negative (fix double FreeXid). Fix
649 list processing in file routines. Check return code on kmalloc in open.
650 Fix spinlock usage for SMP.
654 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
655 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
656 on create hard link when server does not support them.
660 Fix scheduling while atomic error in getting inode info on newly created file.
661 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
665 Fix oops on write to dead tcp session. Remove error log write for case when file open
666 O_CREAT but not O_EXCL
670 Fix non-POSIX behavior on rename of open file and delete of open file by taking
671 advantage of trans2 SetFileInfo rename facility if available on target server.
672 Retry on ENOSPC and EAGAIN socket errors.
676 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
677 allocation size miscalculation. After oplock token lost do not read through
682 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
686 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
687 during auto reconnection to server after server recovered from failure.
691 Finish support for Linux 2.5 open/create changes, which removes the
692 redundant NTCreate/QPathInfo/close that was sent during file create.
693 Enable oplock by default. Enable packet signing by default (needed to
694 access many recent Windows servers)
698 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
699 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
700 we will choose a cifs user session (smb uid) that better matches the local
701 uid if a) the mount uid does not match the current uid and b) we have another
702 session to the same server (ip address) for a different mount which
703 matches the current local uid.
707 Add support for mknod of block or character devices. Fix oplock
708 code (distributed caching) to properly send response to oplock
713 Finish up CIFS packet digital signing for the default
714 NTLM security case. This should help Windows 2003
715 network interoperability since it is common for
716 packet signing to be required now. Fix statfs (stat -f)
717 which recently started returning errors due to
718 invalid value (-1 instead of 0) being set in the
719 struct kstatfs f_ffiles field.
723 Fix oops on stopping oplock thread when removing cifs when
728 Fix mount options for ro (readonly), uid, gid and file and directory mode.
732 Fix errors displayed on failed mounts to be more understandable.
733 Fixed various incorrect or misleading smb to posix error code mappings.
737 Fix display of NTFS DFS junctions to display as symlinks.
738 They are the network equivalent. Fix oops in
739 cifs_partialpagewrite caused by missing spinlock protection
740 of openfile linked list. Allow writebehind caching errors to
741 be returned to the application at file close.
745 Clean up options displayed in /proc/mounts by show_options to
746 be more consistent with other filesystems.
750 Fix delete of readonly file to Windows servers. Reflect
751 presence or absence of read only dos attribute in mode
752 bits for servers that do not support CIFS Unix extensions.
753 Fix shortened results on readdir of large directories to
754 servers supporting CIFS Unix extensions (caused by
755 incorrect resume key).
759 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
763 unload nls if mount fails.
767 Add resume key support to search (readdir) code to workaround
768 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
769 allows disabling caching of attribute information for
774 Add more oplock handling (distributed caching code). Remove
775 dead code. Remove excessive stack space utilization from
780 Fix oops in get dfs referral (triggered when null path sent in to
781 mount). Add support for overriding rsize at mount time.
785 Fix buffer overrun in readdir which caused intermittent kernel oopses.
786 Fix writepage code to release kmap on write data. Allow "-ip=" new
787 mount option to be passed in on parameter distinct from the first part
788 (server name portion of) the UNC name. Allow override of the
789 tcp port of the target server via new mount option "-port="
793 Fix search handle leak on rewind. Fix setuid and gid so that they are
794 reflected in the local inode immediately. Cleanup of whitespace
795 to make 2.4 and 2.5 versions more consistent.
800 Fix signal sending so that captive thread (cifsd) exits on umount
801 (which was causing the warning in kmem_cache_free of the request buffers
802 at rmmod time). This had broken as a sideeffect of the recent global
803 kernel change to daemonize. Fix memory leak in readdir code which
804 showed up in "ls -R" (and applications that did search rewinding).
808 Reconnect tids and fids after session reconnection (still do not
809 reconnect byte range locks though). Fix problem caching
810 lookup information for directory inodes, improving performance,
811 especially in deep directory trees. Fix various build warnings.
815 Finish fixes to commit write for caching/readahead consistency. fsx
816 now works to Samba servers. Fix oops caused when readahead
817 was interrupted by a signal.
821 Fix data corruption (in partial page after truncate) that caused fsx to
822 fail to Windows servers. Cleaned up some extraneous error logging in
823 common error paths. Add generic sendfile support.
827 Fix memory leak in AllocMidQEntry.
828 Finish reconnection logic, so connection with server can be dropped
829 (or server rebooted) and the cifs client will reconnect.
833 Fix temporary socket leak when bad userid or password specified
834 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
835 over 16K to allow negotiation of up to Samba and Windows server default read
836 sizes. Add support for readpages
840 Fix oops when username not passed in on mount. Extensive fixes and improvements
841 to error logging (strip redundant newlines, change debug macros to ensure newline
842 passed in and to be more consistent). Fix writepage wrong file handle problem,
843 a readonly file handle could be incorrectly used to attempt to write out
844 file updates through the page cache to multiply open files. This could cause
845 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
846 shares to the same Windows server when using different usernames
847 (doing this to Samba servers worked but Windows was rejecting it) - now it is
848 possible to use different userids when connecting to the same server from a
849 Linux client. Fix oops when treeDisconnect called during unmount on
850 previously freed socket.
854 Fix oops in readpages caused by not setting address space operations in inode in
859 Includes support for deleting of open files and renaming over existing files (per POSIX
860 requirement). Add readlink support for Windows junction points (directory symlinks).
864 Changed read and write to go through pagecache. Added additional address space operations.
865 Memory mapped operations now working.
869 Added writepage code for additional memory mapping support. Fixed leak in xids causing
870 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
871 every stat call. Additional formatting cleanup.
875 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
879 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
880 Also included a modified version of his fix to protect global list manipulation of
881 the smb session and tree connection and mid related global variables.
885 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
886 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
887 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
891 More stylistic updates to better match kernel style. Add additional statistics
892 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
893 and CIFS Packet Signing enablement.
897 Replace call to sleep_on with safer wait_on_event.
898 Make stylistic changes to better match kernel style recommendations.
899 Remove most typedef usage (except for the PDUs themselves).
903 Update mount so the -unc mount option is no longer required (the ip address can be specified
904 in a UNC style device name. Implementation of readpage/writepage started.
908 Fix intermittent problem with incorrect smb header checking on badly
909 fragmented tcp responses
913 Fixes to setting of allocation size and file size.
917 Various 2.5.38 fixes. Now works on 2.5.38
921 Prepare for 2.5 kernel merge. Remove ifdefs.
925 Socket buffer management fixes. Fix dual free.
929 Various big endian fixes for hardlinks and symlinks and also for dfs.
933 Various big endian fixes for servers with Unix extensions such as Samba
937 Various FindNext fixes for incorrect filenames on large directory searches on big endian
938 clients. basic posix file i/o tests now work on big endian machines, not just le
942 SessionSetup and NegotiateProtocol now work from Big Endian machines.
943 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
944 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
948 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
949 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
953 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
954 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
955 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
956 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
960 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
961 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
965 Rewrote much of connection and mount/unmount logic to handle bugs with
966 multiple uses to same share, multiple users to same server etc.
970 Fixed major problem with dentry corruption (missing call to dput)
974 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
975 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
976 although corresponding function not fully implemented in the vfs yet
980 Fixed dentry caching bug, misc. cleanup
984 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
985 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
986 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
990 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
991 and tested against Samba 2.2.5
996 1) Fixed lockrange to be correct (it was one byte too short)
998 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
999 show range as locked when there is a conflict with an existing lock.
1001 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
1002 in most cases. Eventually will offer optional ability to query server for the correct perms.
1004 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
1005 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
1008 4) Fixed error logging of valid mount options
1010 5) Removed logging of password field.
1012 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
1013 and cleaned them up and made them more consistent with other cifs functions.
1015 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
1016 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1017 nor is the symlink support using the Unix extensions
1019 8) Started adding the readlink and follow_link code
git.samba.org / sfrench / cifs-2.6.git / blob