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
9 Improve support for multiple security contexts to the same server. We
10 used to use the same "vcnumber" for all connections which could cause
11 the server to treat subsequent connections, especially those that
12 are authenticated as guest, as reconnections, invalidating the earlier
13 user's smb session. This fix allows cifs to mount multiple times to the
14 same server with different userids without risking invalidating earlier
15 established security contexts. fsync now sends SMB Flush operation
16 to better ensure that we wait for server to write all of the data to
17 server disk (not just write it over the network). Add new mount
18 parameter to allow user to disable sending the (slow) SMB flush on
19 fsync if desired (fsync still flushes all cached write data to the server).
20 Posix file open support added (turned off after one attempt if server
21 fails to support it properly, as with Samba server versions prior to 3.3.2)
22 Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
23 little memory for the "nativeFileSystem" field returned by the server
24 during mount). Endian convert inode numbers if necessary (makes it easier
25 to compare inode numbers on network files from big endian systems).
29 Add "forcemandatorylock" mount option to allow user to use mandatory
30 rather than posix (advisory) byte range locks, even though server would
31 support posix byte range locks. Fix query of root inode when prefixpath
32 specified and user does not have access to query information about the
33 top of the share. Fix problem in 2.6.28 resolving DFS paths to
34 Samba servers (worked to Windows). Fix rmdir so that pending search
35 (readdir) requests do not get invalid results which include the now
36 removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
37 when using DFS. Add better file create support to servers which support
38 the CIFS POSIX protocol extensions (this adds support for new flags
39 on create, and improves semantics for write of locked ranges).
43 Various fixes to make delete of open files behavior more predictable
44 (when delete of an open file fails we mark the file as "delete-on-close"
45 in a way that more servers accept, but only if we can first rename the
46 file to a temporary name). Add experimental support for more safely
47 handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
48 sends, and also let tcp autotune the socket send and receive buffers.
49 This reduces the number of EAGAIN errors returned by TCP/IP in
50 high stress workloads (and the number of retries on socket writes
51 when sending large SMBWriteX requests). Fix case in which a portion of
52 data can in some cases not get written to the file on the server before the
53 file is closed. Fix DFS parsing to properly handle path consumed field,
54 and to handle certain codepage conversions better. Fix mount and
55 umount race that can cause oops in mount or umount or reconnect.
59 Fix premature write failure on congested networks (we would give up
60 on EAGAIN from the socket too quickly on large writes).
61 Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
62 Fix endian problems in acl (mode from/to cifs acl) on bigendian
63 architectures. Fix problems with preserving timestamps on copying open
64 files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit
65 on parent directory when server supports Unix Extensions but not POSIX
66 create. Update cifs.upcall version to handle new Kerberos sec flags
67 (this requires update of cifs.upcall program from Samba). Fix memory leak
68 on dns_upcall (resolving DFS referralls). Fix plain text password
69 authentication (requires setting SecurityFlags to 0x30030 to enable
70 lanman and plain text though). Fix writes to be at correct offset when
71 file is open with O_APPEND and file is on a directio (forcediretio) mount.
72 Fix bug in rewinding readdir directory searches. Add nodfs mount option.
76 DFS support added (Microsoft Distributed File System client support needed
77 for referrals which enable a hierarchical name space among servers).
78 Disable temporary caching of mode bits to servers which do not support
79 storing of mode (e.g. Windows servers, when client mounts without cifsacl
80 mount option) and add new "dynperm" mount option to enable temporary caching
81 of mode (enable old behavior). Fix hang on mount caused when server crashes
82 tcp session during negotiate protocol.
86 Fix oops on second mount to server when null auth is used.
87 Enable experimental Kerberos support. Return writebehind errors on flush
88 and sync so that events like out of disk space get reported properly on
89 cached files. Fix setxattr failure to certain Samba versions. Fix mount
90 of second share to disconnected server session (autoreconnect on this).
91 Add ability to modify cifs acls for handling chmod (when mounted with
92 cifsacl flag). Fix prefixpath path separator so we can handle mounts
93 with prefixpaths longer than one directory (one path component) when
94 mounted to Windows servers. Fix slow file open when cifsacl
95 enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
100 Fix memory leak in statfs when mounted to very old servers (e.g.
101 Windows 9x). Add new feature "POSIX open" which allows servers
102 which support the current POSIX Extensions to provide better semantics
103 (e.g. delete for open files opened with posix open). Take into
104 account umask on posix mkdir not just older style mkdir. Add
105 ability to mount to IPC$ share (which allows CIFS named pipes to be
106 opened, read and written as if they were files). When 1st tree
107 connect fails (e.g. due to signing negotiation failure) fix
108 leak that causes cifsd not to stop and rmmod to fail to cleanup
109 cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
110 bigendian architectures. Fix possible memory corruption when
111 EAGAIN returned on kern_recvmsg. Return better error if server
112 requires packet signing but client has disabled it. When mounted
113 with cifsacl mount option - mode bits are approximated based
114 on the contents of the ACL of the file or directory. When cifs
115 mount helper is missing convert make sure that UNC name
116 has backslash (not forward slash) between ip address of server
121 Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
122 done with "serverino" mount option). Add support for POSIX Unlink
123 (helps with certain sharing violation cases when server such as
124 Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
125 mount option to allow disabling the CIFS Unix Extensions for just
126 that mount. Fix hang on spinlock in find_writable_file (race when
127 reopening file after session crash). Byte range unlock request to
128 windows server could unlock more bytes (on server copy of file)
129 than intended if start of unlock request is well before start of
130 a previous byte range lock that we issued.
134 IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
135 address after the "ip=" mount option, at least until mount.cifs is fixed to
136 handle DNS host to ipv6 name translation). Accept override of uid or gid
137 on mount even when Unix Extensions are negotiated (it used to be ignored
138 when Unix Extensions were ignored). This allows users to override the
139 default uid and gid for files when they are certain that the uids or
140 gids on the server do not match those of the client. Make "sec=none"
141 mount override username (so that null user connection is attempted)
142 to match what documentation said. Support for very large reads, over 127K,
143 available to some newer servers (such as Samba 3.0.26 and later but
144 note that it also requires setting CIFSMaxBufSize at module install
145 time to a larger value which may hurt performance in some cases).
146 Make sign option force signing (or fail if server does not support it).
150 Fix mtime bouncing around from local idea of last write times to remote time.
151 Fix hang (in i_size_read) when simultaneous size update of same remote file
152 on smp system corrupts sequence number. Do not reread unnecessarily partial page
153 (which we are about to overwrite anyway) when writing out file opened rw.
154 When DOS attribute of file on non-Unix server's file changes on the server side
155 from read-only back to read-write, reflect this change in default file mode
156 (we had been leaving a file's mode read-only until the inode were reloaded).
157 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
158 when archive dos attribute not set and we are changing mode back to writeable
159 on server which does not support the Unix Extensions). Remove read only dos
160 attribute on chmod when adding any write permission (ie on any of
161 user/group/other (not all of user/group/other ie 0222) when
162 mounted to windows. Add support for POSIX MkDir (slight performance
163 enhancement and eliminates the network race between the mkdir and set
164 path info of the mode).
169 Fix oops in list_del during mount caused by unaligned string.
170 Fix file corruption which could occur on some large file
171 copies caused by writepages page i/o completion bug.
172 Seek to SEEK_END forces check for update of file size for non-cached
173 files. Allow file size to be updated on remote extend of locally open,
174 non-cached file. Fix reconnect to newer Samba servers (or other servers
175 which support the CIFS Unix/POSIX extensions) so that we again tell the
176 server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
177 Add experimental support for new POSIX Open/Mkdir (which returns
178 stat information on the open, and allows setting the mode).
182 Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps.
183 Allow null user to be specified on mount ("username="). Do not return
184 EINVAL on readdir when filldir fails due to overwritten blocksize
185 (fixes FC problem). Return error in rename 2nd attempt retry (ie report
186 if rename by handle also fails, after rename by path fails, we were
187 not reporting whether the retry worked or not). Fix NTLMv2 to
188 work to Windows servers (mount with option "sec=ntlmv2").
192 Do not time out lockw calls when using posix extensions. Do not
193 time out requests if server still responding reasonably fast
194 on requests on other threads. Improve POSIX locking emulation,
195 (lock cancel now works, and unlock of merged range works even
196 to Windows servers now). Fix oops on mount to lanman servers
197 (win9x, os/2 etc.) when null password. Do not send listxattr
198 (SMB to query all EAs) if nouser_xattr specified. Fix SE Linux
199 problem (instantiate inodes/dentries in right order for readdir).
203 Rewritten sessionsetup support, including support for legacy SMB
204 session setup needed for OS/2 and older servers such as Windows 95 and 98.
205 Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst
206 so we can do search (ls etc.) to OS/2. Do not send NTCreateX
207 or recent levels of FindFirst unless server says it supports NT SMBs
208 (instead use legacy equivalents from LANMAN dialect). Fix to allow
209 NTLMv2 authentication support (now can use stronger password hashing
210 on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
211 Allow override of global cifs security flags on mount via "sec=" option(s).
215 POSIX locking to servers which support CIFS POSIX Extensions
216 (disabled by default controlled by proc/fs/cifs/Experimental).
217 Handle conversion of long share names (especially Asian languages)
218 to Unicode during mount. Fix memory leak in sess struct on reconnect.
219 Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on
220 cifs open which helps rare case when setpathinfo fails or server does
225 Fix slow oplock break when mounted to different servers at the same time and
226 the tids match and we try to find matching fid on wrong server. Fix read
227 looping when signing required by server (2.6.16 kernel only). Fix readdir
228 vs. rename race which could cause each to hang. Return . and .. even
229 if server does not. Allow searches to skip first three entries and
230 begin at any location. Fix oops in find_writeable_file.
234 Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
235 configure stronger authentication. Fix sfu symlinks so they can
236 be followed (not just recognized). Fix wraparound of bcc on
237 read responses when buffer size over 64K and also fix wrap of
238 max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in
239 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
240 on socket is returned over and over). Add POSIX (advisory) byte range
241 locking support (requires server with newest CIFS UNIX Extensions
242 to the protocol implemented). Slow down negprot slightly in port 139
243 RFC1001 case to give session_init time on buggy servers.
247 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
248 of readpages by eliminating one extra memcpy. Allow update of file size
249 from remote server even if file is open for write as long as mount is
250 directio. Recognize share mode security and send NTLM encrypted password
251 on tree connect if share mode negotiated.
255 Defer close of a file handle slightly if pending writes depend on that handle
256 (this reduces the EBADF bad file handle errors that can be logged under heavy
257 stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2
258 Fix SFU style symlinks and mknod needed for servers which do not support the
259 CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative
260 dentries so files that the client sees as deleted but that later get created
261 on the server will be recognized. Add client side permission check on setattr.
262 Timeout stuck requests better (where server has never responded or sent corrupt
267 Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
268 to be smaller at first (but increasing) so large write performance performance
269 over GigE is better. Do not hang thread on illegal byte range lock response
270 from Windows (Windows can send an RFC1001 size which does not match smb size) by
271 allowing an SMBs TCP length to be up to a few bytes longer than it should be.
272 wsize and rsize can now be larger than negotiated buffer size if server
273 supports large readx/writex, even when directio mount flag not specified.
274 Write size will in many cases now be 16K instead of 4K which greatly helps
275 file copy performance on lightly loaded networks. Fix oops in dnotify
276 when experimental config flag enabled. Make cifsFYI more granular.
280 Fix readdir caching when unlink removes file in current search buffer,
281 and this is followed by a rewind search to just before the deleted entry.
282 Do not attempt to set ctime unless atime and/or mtime change requested
283 (most servers throw it away anyway). Fix length check of received smbs
284 to be more accurate. Fix big endian problem with mapchars mount option,
285 and with a field returned by statfs.
289 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
290 For these older servers, add option for passing netbios name of server in
291 on mount (servernetbiosname). Add suspend support for power management, to
292 avoid cifsd thread preventing software suspend from working.
293 Add mount option for disabling the default behavior of sending byte range lock
294 requests to the server (necessary for certain applications which break with
295 mandatory lock behavior such as Evolution), and also mount option for
296 requesting case insensitive matching for path based requests (requesting
297 case sensitive is the default).
301 Add writepage performance improvements. Fix path name conversions
302 for long filenames on mounts which were done with "mapchars" mount option
303 specified. Ensure multiplex ids do not collide. Fix case in which
304 rmmod can oops if done soon after last unmount. Fix truncated
305 search (readdir) output when resume filename was a long filename.
306 Fix filename conversion when mapchars mount option was specified and
307 filename was a long filename.
311 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
312 Do not oops if root user kills cifs oplock kernel thread or
313 kills the cifsd thread (NB: killing the cifs kernel threads is not
314 recommended, unmount and rmmod cifs will kill them when they are
315 no longer needed). Fix readdir to ASCII servers (ie older servers
316 which do not support Unicode) and also require asterisk.
317 Fix out of memory case in which data could be written one page
318 off in the page cache.
322 Fix caching problem, in which readdir of directory containing a file
323 which was cached could cause the file's time stamp to be updated
324 without invalidating the readahead data (so we could get stale
325 file data on the client for that file even as the server copy changed).
326 Cleanup response processing so cifsd can not loop when abnormally
332 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
333 transact response for an SMB request and search entry split across two frames.
334 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
335 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
336 unless server explicitly claims to support them in CIFS Unix extensions
337 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
338 different users from the same client to the same server. Fix oops in
339 cifs_close. Add mount option for remapping reserved characters in
340 filenames (also allow recognizing files with created by SFU which have any
341 of these seven reserved characters, except backslash, to be recognized).
342 Fix invalid transact2 message (we were sometimes trying to interpret
343 oplock breaks as SMB responses). Add ioctl for checking that the
344 current uid matches the uid of the mounter (needed by umount.cifs).
345 Reduce the number of large buffer allocations in cifs response processing
346 (significantly reduces memory pressure under heavy stress with multiple
347 processes accessing the same server at the same time).
351 Fix updates of DOS attributes and time fields so that files on NT4 servers
352 do not get marked delete on close. Display sizes of cifs buffer pools in
353 cifs stats. Fix oops in unmount when cifsd thread being killed by
354 shutdown. Add generic readv/writev and aio support. Report inode numbers
355 consistently in readdir and lookup (when serverino mount option is
356 specified use the inode number that the server reports - for both lookup
357 and readdir, otherwise by default the locally generated inode number is used
358 for inodes created in either path since servers are not always able to
359 provide unique inode numbers when exporting multiple volumes from under one
364 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
365 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
366 (mostly affects NT4 servers) by retry with handle based network operation.
367 Add new POSIX Query FS Info for returning statfs info more accurately.
368 Handle passwords with multiple commas in them.
372 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
373 Fix capabilities flags for large readx so as to allow reads larger than 64K.
377 Add module init parm for large SMB buffer size (to allow it to be changed
378 from its default of 16K) which is especially useful for large file copy
379 when mounting with the directio mount option. Fix oops after
380 returning from mount when experimental ExtendedSecurity enabled and
381 SpnegoNegotiated returning invalid error. Fix case to retry better when
382 peek returns from 1 to 3 bytes on socket which should have more data.
383 Fixed path based calls (such as cifs lookup) to handle path names
384 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
385 from Samba server to DC (Samba required dummy LM password).
389 Turn off DNOTIFY (directory change notification support) by default
390 (unless built with the experimental flag) to fix hang with KDE
391 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
392 waiting on an SMB response) in SendReceive when session dies but
393 reconnects quickly from another task. Add module init parms for
394 minimum number of large and small network buffers in the buffer pools,
395 and for the maximum number of simultaneous requests.
399 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
400 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
401 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
402 improperly zeroed buffer in CIFS Unix extensions set times call.
406 Fix internationalization problem in cifs readdir with filenames that map to
407 longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
408 for readdir to netapp servers. Fix search rewind (seek into readdir to return
409 non-consecutive entries). Do not do readdir when server negotiates
410 buffer size to small to fit filename. Add support for reading POSIX ACLs from
411 the server (add also acl and noacl mount options).
415 Optionally allow using server side inode numbers, rather than client generated
416 ones by specifying mount option "serverino" - this is required for some apps
417 to work which double check hardlinked files and have persistent inode numbers.
421 Multiple bigendian fixes. On little endian systems (for reconnect after
422 network failure) fix tcp session reconnect code so we do not try first
423 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
424 as directories rather than symlinks because we can do follow link on them.
428 Add config option to enable XATTR (extended attribute) support, mapping
429 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
430 minor fixes pointed out by the Stanford SWAT checker (mostly missing
431 or out of order NULL pointer checks in little used error paths).
435 Add new mount parm to control whether mode check (generic_permission) is done
436 on the client. If Unix extensions are enabled and the uids on the client
437 and server do not match, client permission checks are meaningless on
438 server uids that do not exist on the client (this does not affect the
439 normal ACL check which occurs on the server). Fix default uid
440 on mknod to match create and mkdir. Add optional mount parm to allow
441 override of the default uid behavior (in which the server sets the uid
442 and gid of newly created files). Normally for network filesystem mounts
443 user want the server to set the uid/gid on newly created files (rather than
444 using uid of the client processes you would in a local filesystem).
448 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
449 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
450 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
451 (block/char/fifo) properly. Remove spurious mount warning log entry when
452 credentials passed as mount argument. Set major/minor device number in
453 inode for block and char devices when unix extensions enabled.
457 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
458 amounts of return data. Properly limit requests to MAX_REQ (50
459 is the usual maximum active multiplex SMB/CIFS requests per server).
460 Do not kill cifsd (and thus hurt the other SMB session) when more than one
461 session to the same server (but with different userids) exists and one
462 of the two user's smb sessions is being removed while leaving the other.
463 Do not loop reconnecting in cifsd demultiplex thread when admin
464 kills the thread without going through unmount.
468 Do not rename hardlinked files (since that should be a noop). Flush
469 cached write behind data when reopening a file after session abend,
470 except when already in write. Grab per socket sem during reconnect
471 to avoid oops in sendmsg if overlapping with reconnect. Do not
472 reset cached inode file size on readdir for files open for write on
478 Update number of blocks in file so du command is happier (in Linux a fake
479 blocksize of 512 is required for calculating number of blocks in inode).
480 Fix prepare write of partial pages to read in data from server if possible.
481 Fix race on tcpStatus field between unmount and reconnection code, causing
482 cifsd process sometimes to hang around forever. Improve out of memory
483 checks in cifs_filldir
487 Fix incorrect file size in file handle based setattr on big endian hardware.
488 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
489 and closing file structs in writepage/partialpagewrite. Add statistics
490 for each mounted share (new menuconfig option). Fix endianness problem in
491 volume information displayed in /proc/fs/cifs/DebugData (only affects
492 affects big endian architectures). Prevent renames while constructing
493 path names for open, mkdir and rmdir.
497 Change to mempools for alloc smb request buffers and multiplex structs
498 to better handle low memory problems (and potential deadlocks).
502 Fix incomplete listings of large directories on Samba servers when Unix
503 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
504 rename deadlock when writing out dirty pages at same time.
508 Fix open of files in which O_CREATE can cause the mode to change in
509 some cases. Fix case in which retry of write overlaps file close.
510 Fix PPC64 build error. Reduce excessive stack usage in smb password
511 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
515 Fixes for large file copy, signal handling, socket retry, buffer
516 allocation and low memory situations.
520 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
521 also now allowing support for specifying client netbiosname. NT4 support added.
525 Fix reconnection (and certain failed mounts) to properly wake up the
526 blocked users thread so it does not seem hung (in some cases was blocked
527 until the cifs receive timeout expired). Fix spurious error logging
528 to kernel log when application with open network files killed.
532 Fix /proc/fs module unload warning message (that could be logged
533 to the kernel log). Fix intermittent failure in connectathon
534 test7 (hardlink count not immediately refreshed in case in which
535 inode metadata can be incorrectly kept cached when time near zero)
539 Allow file_mode and dir_mode (specified at mount time) to be enforced
540 locally (the server already enforced its own ACLs too) for servers
541 that do not report the correct mode (do not support the
542 CIFS Unix Extensions).
546 Fix some small memory leaks in some unmount error paths. Fix major leak
547 of cache pages in readpages causing multiple read oriented stress
548 testcases (including fsx, and even large file copy) to fail over time.
552 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
553 This allows files that differ only in case and improves performance of file
554 creation and file open to such servers. Fix semaphore conflict which causes
555 slow delete of open file to Samba (which unfortunately can cause an oplock
556 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
560 fixes to cifs_readpages for fsx test case
564 Fix caching data integrity bug when extending file size especially when no
565 oplock on file. Fix spurious logging of valid already parsed mount options
566 that are parsed outside of the cifs vfs such as nosuid.
571 Connect to server when port number override not specified, and tcp port
572 unitialized. Reset search to restart at correct file when kernel routine
573 filldir returns error during large directory searches (readdir).
577 Fix caching problem when files opened by multiple clients in which
578 page cache could contain stale data, and write through did
579 not occur often enough while file was still open when read ahead
580 (read oplock) not allowed. Treat "sep=" when first mount option
581 as an override of comma as the default separator between mount
586 Allow passwords longer than 16 bytes. Allow null password string.
590 Gracefully clean up failed mounts when attempting to mount to servers such as
591 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
592 embedded commas in mount parsing of passwords.
596 Invalidate local inode cached pages on oplock break and when last file
597 instance is closed so that the client does not continue using stale local
598 copy rather than later modified server copy of file. Do not reconnect
599 when server drops the tcp session prematurely before negotiate
600 protocol response. Fix oops in reopen_file when dentry freed. Allow
601 the support for CIFS Unix Extensions to be disabled via proc interface.
605 Fix hang in commit_write during reconnection of open files under heavy load.
606 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
607 which also fixes any possible races when cifs signatures are enabled in SMBs
608 being sent out of signature sequence number order.
612 Fix byte range locking bug (endian problem) causing bad offset and
617 Fix oops (in send_sig) caused by CIFS unmount code trying to
618 wake up the demultiplex thread after it had exited. Do not log
619 error on harmless oplock release of closed handle.
623 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
624 Fix problem reconnecting secondary mounts to same server after session
625 failure. Fix invalid dentry - race in mkdir when directory gets created
626 by another client between the lookup and mkdir.
630 Fix to list processing in reopen_files. Fix reconnection when server hung
631 but tcpip session still alive. Set proper timeout on socket read.
635 Add missing mount options including iocharset. SMP fixes in write and open.
636 Fix errors in reconnecting after TCP session failure. Fix module unloading
637 of default nls codepage
641 Active smb transactions should never go negative (fix double FreeXid). Fix
642 list processing in file routines. Check return code on kmalloc in open.
643 Fix spinlock usage for SMP.
647 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
648 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
649 on create hard link when server does not support them.
653 Fix scheduling while atomic error in getting inode info on newly created file.
654 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
658 Fix oops on write to dead tcp session. Remove error log write for case when file open
659 O_CREAT but not O_EXCL
663 Fix non-POSIX behavior on rename of open file and delete of open file by taking
664 advantage of trans2 SetFileInfo rename facility if available on target server.
665 Retry on ENOSPC and EAGAIN socket errors.
669 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
670 allocation size miscalculation. After oplock token lost do not read through
675 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
679 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
680 during auto reconnection to server after server recovered from failure.
684 Finish support for Linux 2.5 open/create changes, which removes the
685 redundant NTCreate/QPathInfo/close that was sent during file create.
686 Enable oplock by default. Enable packet signing by default (needed to
687 access many recent Windows servers)
691 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
692 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
693 we will choose a cifs user session (smb uid) that better matches the local
694 uid if a) the mount uid does not match the current uid and b) we have another
695 session to the same server (ip address) for a different mount which
696 matches the current local uid.
700 Add support for mknod of block or character devices. Fix oplock
701 code (distributed caching) to properly send response to oplock
706 Finish up CIFS packet digital signing for the default
707 NTLM security case. This should help Windows 2003
708 network interoperability since it is common for
709 packet signing to be required now. Fix statfs (stat -f)
710 which recently started returning errors due to
711 invalid value (-1 instead of 0) being set in the
712 struct kstatfs f_ffiles field.
716 Fix oops on stopping oplock thread when removing cifs when
721 Fix mount options for ro (readonly), uid, gid and file and directory mode.
725 Fix errors displayed on failed mounts to be more understandable.
726 Fixed various incorrect or misleading smb to posix error code mappings.
730 Fix display of NTFS DFS junctions to display as symlinks.
731 They are the network equivalent. Fix oops in
732 cifs_partialpagewrite caused by missing spinlock protection
733 of openfile linked list. Allow writebehind caching errors to
734 be returned to the application at file close.
738 Clean up options displayed in /proc/mounts by show_options to
739 be more consistent with other filesystems.
743 Fix delete of readonly file to Windows servers. Reflect
744 presence or absence of read only dos attribute in mode
745 bits for servers that do not support CIFS Unix extensions.
746 Fix shortened results on readdir of large directories to
747 servers supporting CIFS Unix extensions (caused by
748 incorrect resume key).
752 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
756 unload nls if mount fails.
760 Add resume key support to search (readdir) code to workaround
761 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
762 allows disabling caching of attribute information for
767 Add more oplock handling (distributed caching code). Remove
768 dead code. Remove excessive stack space utilization from
773 Fix oops in get dfs referral (triggered when null path sent in to
774 mount). Add support for overriding rsize at mount time.
778 Fix buffer overrun in readdir which caused intermittent kernel oopses.
779 Fix writepage code to release kmap on write data. Allow "-ip=" new
780 mount option to be passed in on parameter distinct from the first part
781 (server name portion of) the UNC name. Allow override of the
782 tcp port of the target server via new mount option "-port="
786 Fix search handle leak on rewind. Fix setuid and gid so that they are
787 reflected in the local inode immediately. Cleanup of whitespace
788 to make 2.4 and 2.5 versions more consistent.
793 Fix signal sending so that captive thread (cifsd) exits on umount
794 (which was causing the warning in kmem_cache_free of the request buffers
795 at rmmod time). This had broken as a sideeffect of the recent global
796 kernel change to daemonize. Fix memory leak in readdir code which
797 showed up in "ls -R" (and applications that did search rewinding).
801 Reconnect tids and fids after session reconnection (still do not
802 reconnect byte range locks though). Fix problem caching
803 lookup information for directory inodes, improving performance,
804 especially in deep directory trees. Fix various build warnings.
808 Finish fixes to commit write for caching/readahead consistency. fsx
809 now works to Samba servers. Fix oops caused when readahead
810 was interrupted by a signal.
814 Fix data corruption (in partial page after truncate) that caused fsx to
815 fail to Windows servers. Cleaned up some extraneous error logging in
816 common error paths. Add generic sendfile support.
820 Fix memory leak in AllocMidQEntry.
821 Finish reconnection logic, so connection with server can be dropped
822 (or server rebooted) and the cifs client will reconnect.
826 Fix temporary socket leak when bad userid or password specified
827 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
828 over 16K to allow negotiation of up to Samba and Windows server default read
829 sizes. Add support for readpages
833 Fix oops when username not passed in on mount. Extensive fixes and improvements
834 to error logging (strip redundant newlines, change debug macros to ensure newline
835 passed in and to be more consistent). Fix writepage wrong file handle problem,
836 a readonly file handle could be incorrectly used to attempt to write out
837 file updates through the page cache to multiply open files. This could cause
838 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
839 shares to the same Windows server when using different usernames
840 (doing this to Samba servers worked but Windows was rejecting it) - now it is
841 possible to use different userids when connecting to the same server from a
842 Linux client. Fix oops when treeDisconnect called during unmount on
843 previously freed socket.
847 Fix oops in readpages caused by not setting address space operations in inode in
852 Includes support for deleting of open files and renaming over existing files (per POSIX
853 requirement). Add readlink support for Windows junction points (directory symlinks).
857 Changed read and write to go through pagecache. Added additional address space operations.
858 Memory mapped operations now working.
862 Added writepage code for additional memory mapping support. Fixed leak in xids causing
863 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
864 every stat call. Additional formatting cleanup.
868 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
872 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
873 Also included a modified version of his fix to protect global list manipulation of
874 the smb session and tree connection and mid related global variables.
878 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
879 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
880 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
884 More stylistic updates to better match kernel style. Add additional statistics
885 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
886 and CIFS Packet Signing enablement.
890 Replace call to sleep_on with safer wait_on_event.
891 Make stylistic changes to better match kernel style recommendations.
892 Remove most typedef usage (except for the PDUs themselves).
896 Update mount so the -unc mount option is no longer required (the ip address can be specified
897 in a UNC style device name. Implementation of readpage/writepage started.
901 Fix intermittent problem with incorrect smb header checking on badly
902 fragmented tcp responses
906 Fixes to setting of allocation size and file size.
910 Various 2.5.38 fixes. Now works on 2.5.38
914 Prepare for 2.5 kernel merge. Remove ifdefs.
918 Socket buffer management fixes. Fix dual free.
922 Various big endian fixes for hardlinks and symlinks and also for dfs.
926 Various big endian fixes for servers with Unix extensions such as Samba
930 Various FindNext fixes for incorrect filenames on large directory searches on big endian
931 clients. basic posix file i/o tests now work on big endian machines, not just le
935 SessionSetup and NegotiateProtocol now work from Big Endian machines.
936 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
937 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
941 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
942 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
946 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
947 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
948 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
949 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
953 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
954 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
958 Rewrote much of connection and mount/unmount logic to handle bugs with
959 multiple uses to same share, multiple users to same server etc.
963 Fixed major problem with dentry corruption (missing call to dput)
967 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
968 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
969 although corresponding function not fully implemented in the vfs yet
973 Fixed dentry caching bug, misc. cleanup
977 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
978 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
979 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
983 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
984 and tested against Samba 2.2.5
989 1) Fixed lockrange to be correct (it was one byte too short)
991 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
992 show range as locked when there is a conflict with an existing lock.
994 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
995 in most cases. Eventually will offer optional ability to query server for the correct perms.
997 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
998 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
1001 4) Fixed error logging of valid mount options
1003 5) Removed logging of password field.
1005 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
1006 and cleaned them up and made them more consistent with other cifs functions.
1008 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
1009 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1010 nor is the symlink support using the Unix extensions
1012 8) Started adding the readlink and follow_link code
projects / linux-2.6 / blob