3 Improve support for multiple security contexts to the same server. We
4 used to use the same "vcnumber" for all connections which could cause
5 the server to treat subsequent connections, especially those that
6 are authenticated as guest, as reconnections, invalidating the earlier
7 user's smb session. This fix allows cifs to mount multiple times to the
8 same server with different userids without risking invalidating earlier
9 established security contexts. fsync now sends SMB Flush operation
10 to better ensure that we wait for server to write all of the data to
11 server disk (not just write it over the network). Add new mount
12 parameter to allow user to disable sending the (slow) SMB flush on
13 fsync if desired (fsync still flushes all cached write data to the server).
14 Posix file open support added (turned off after one attempt if server
15 fails to support it properly, as with Samba server versions prior to 3.3.2)
16 Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
17 little memory for the "nativeFileSystem" field returned by the server
22 Add "forcemandatorylock" mount option to allow user to use mandatory
23 rather than posix (advisory) byte range locks, even though server would
24 support posix byte range locks. Fix query of root inode when prefixpath
25 specified and user does not have access to query information about the
26 top of the share. Fix problem in 2.6.28 resolving DFS paths to
27 Samba servers (worked to Windows). Fix rmdir so that pending search
28 (readdir) requests do not get invalid results which include the now
29 removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
30 when using DFS. Add better file create support to servers which support
31 the CIFS POSIX protocol extensions (this adds support for new flags
32 on create, and improves semantics for write of locked ranges).
36 Various fixes to make delete of open files behavior more predictable
37 (when delete of an open file fails we mark the file as "delete-on-close"
38 in a way that more servers accept, but only if we can first rename the
39 file to a temporary name). Add experimental support for more safely
40 handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
41 sends, and also let tcp autotune the socket send and receive buffers.
42 This reduces the number of EAGAIN errors returned by TCP/IP in
43 high stress workloads (and the number of retries on socket writes
44 when sending large SMBWriteX requests). Fix case in which a portion of
45 data can in some cases not get written to the file on the server before the
46 file is closed. Fix DFS parsing to properly handle path consumed field,
47 and to handle certain codepage conversions better. Fix mount and
48 umount race that can cause oops in mount or umount or reconnect.
52 Fix premature write failure on congested networks (we would give up
53 on EAGAIN from the socket too quickly on large writes).
54 Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
55 Fix endian problems in acl (mode from/to cifs acl) on bigendian
56 architectures. Fix problems with preserving timestamps on copying open
57 files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit
58 on parent directory when server supports Unix Extensions but not POSIX
59 create. Update cifs.upcall version to handle new Kerberos sec flags
60 (this requires update of cifs.upcall program from Samba). Fix memory leak
61 on dns_upcall (resolving DFS referralls). Fix plain text password
62 authentication (requires setting SecurityFlags to 0x30030 to enable
63 lanman and plain text though). Fix writes to be at correct offset when
64 file is open with O_APPEND and file is on a directio (forcediretio) mount.
65 Fix bug in rewinding readdir directory searches. Add nodfs mount option.
69 DFS support added (Microsoft Distributed File System client support needed
70 for referrals which enable a hierarchical name space among servers).
71 Disable temporary caching of mode bits to servers which do not support
72 storing of mode (e.g. Windows servers, when client mounts without cifsacl
73 mount option) and add new "dynperm" mount option to enable temporary caching
74 of mode (enable old behavior). Fix hang on mount caused when server crashes
75 tcp session during negotiate protocol.
79 Fix oops on second mount to server when null auth is used.
80 Enable experimental Kerberos support. Return writebehind errors on flush
81 and sync so that events like out of disk space get reported properly on
82 cached files. Fix setxattr failure to certain Samba versions. Fix mount
83 of second share to disconnected server session (autoreconnect on this).
84 Add ability to modify cifs acls for handling chmod (when mounted with
85 cifsacl flag). Fix prefixpath path separator so we can handle mounts
86 with prefixpaths longer than one directory (one path component) when
87 mounted to Windows servers. Fix slow file open when cifsacl
88 enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
93 Fix memory leak in statfs when mounted to very old servers (e.g.
94 Windows 9x). Add new feature "POSIX open" which allows servers
95 which support the current POSIX Extensions to provide better semantics
96 (e.g. delete for open files opened with posix open). Take into
97 account umask on posix mkdir not just older style mkdir. Add
98 ability to mount to IPC$ share (which allows CIFS named pipes to be
99 opened, read and written as if they were files). When 1st tree
100 connect fails (e.g. due to signing negotiation failure) fix
101 leak that causes cifsd not to stop and rmmod to fail to cleanup
102 cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
103 bigendian architectures. Fix possible memory corruption when
104 EAGAIN returned on kern_recvmsg. Return better error if server
105 requires packet signing but client has disabled it. When mounted
106 with cifsacl mount option - mode bits are approximated based
107 on the contents of the ACL of the file or directory. When cifs
108 mount helper is missing convert make sure that UNC name
109 has backslash (not forward slash) between ip address of server
114 Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
115 done with "serverino" mount option). Add support for POSIX Unlink
116 (helps with certain sharing violation cases when server such as
117 Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
118 mount option to allow disabling the CIFS Unix Extensions for just
119 that mount. Fix hang on spinlock in find_writable_file (race when
120 reopening file after session crash). Byte range unlock request to
121 windows server could unlock more bytes (on server copy of file)
122 than intended if start of unlock request is well before start of
123 a previous byte range lock that we issued.
127 IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
128 address after the "ip=" mount option, at least until mount.cifs is fixed to
129 handle DNS host to ipv6 name translation). Accept override of uid or gid
130 on mount even when Unix Extensions are negotiated (it used to be ignored
131 when Unix Extensions were ignored). This allows users to override the
132 default uid and gid for files when they are certain that the uids or
133 gids on the server do not match those of the client. Make "sec=none"
134 mount override username (so that null user connection is attempted)
135 to match what documentation said. Support for very large reads, over 127K,
136 available to some newer servers (such as Samba 3.0.26 and later but
137 note that it also requires setting CIFSMaxBufSize at module install
138 time to a larger value which may hurt performance in some cases).
139 Make sign option force signing (or fail if server does not support it).
143 Fix mtime bouncing around from local idea of last write times to remote time.
144 Fix hang (in i_size_read) when simultaneous size update of same remote file
145 on smp system corrupts sequence number. Do not reread unnecessarily partial page
146 (which we are about to overwrite anyway) when writing out file opened rw.
147 When DOS attribute of file on non-Unix server's file changes on the server side
148 from read-only back to read-write, reflect this change in default file mode
149 (we had been leaving a file's mode read-only until the inode were reloaded).
150 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
151 when archive dos attribute not set and we are changing mode back to writeable
152 on server which does not support the Unix Extensions). Remove read only dos
153 attribute on chmod when adding any write permission (ie on any of
154 user/group/other (not all of user/group/other ie 0222) when
155 mounted to windows. Add support for POSIX MkDir (slight performance
156 enhancement and eliminates the network race between the mkdir and set
157 path info of the mode).
162 Fix oops in list_del during mount caused by unaligned string.
163 Fix file corruption which could occur on some large file
164 copies caused by writepages page i/o completion bug.
165 Seek to SEEK_END forces check for update of file size for non-cached
166 files. Allow file size to be updated on remote extend of locally open,
167 non-cached file. Fix reconnect to newer Samba servers (or other servers
168 which support the CIFS Unix/POSIX extensions) so that we again tell the
169 server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
170 Add experimental support for new POSIX Open/Mkdir (which returns
171 stat information on the open, and allows setting the mode).
175 Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps.
176 Allow null user to be specified on mount ("username="). Do not return
177 EINVAL on readdir when filldir fails due to overwritten blocksize
178 (fixes FC problem). Return error in rename 2nd attempt retry (ie report
179 if rename by handle also fails, after rename by path fails, we were
180 not reporting whether the retry worked or not). Fix NTLMv2 to
181 work to Windows servers (mount with option "sec=ntlmv2").
185 Do not time out lockw calls when using posix extensions. Do not
186 time out requests if server still responding reasonably fast
187 on requests on other threads. Improve POSIX locking emulation,
188 (lock cancel now works, and unlock of merged range works even
189 to Windows servers now). Fix oops on mount to lanman servers
190 (win9x, os/2 etc.) when null password. Do not send listxattr
191 (SMB to query all EAs) if nouser_xattr specified. Fix SE Linux
192 problem (instantiate inodes/dentries in right order for readdir).
196 Rewritten sessionsetup support, including support for legacy SMB
197 session setup needed for OS/2 and older servers such as Windows 95 and 98.
198 Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst
199 so we can do search (ls etc.) to OS/2. Do not send NTCreateX
200 or recent levels of FindFirst unless server says it supports NT SMBs
201 (instead use legacy equivalents from LANMAN dialect). Fix to allow
202 NTLMv2 authentication support (now can use stronger password hashing
203 on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
204 Allow override of global cifs security flags on mount via "sec=" option(s).
208 POSIX locking to servers which support CIFS POSIX Extensions
209 (disabled by default controlled by proc/fs/cifs/Experimental).
210 Handle conversion of long share names (especially Asian languages)
211 to Unicode during mount. Fix memory leak in sess struct on reconnect.
212 Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on
213 cifs open which helps rare case when setpathinfo fails or server does
218 Fix slow oplock break when mounted to different servers at the same time and
219 the tids match and we try to find matching fid on wrong server. Fix read
220 looping when signing required by server (2.6.16 kernel only). Fix readdir
221 vs. rename race which could cause each to hang. Return . and .. even
222 if server does not. Allow searches to skip first three entries and
223 begin at any location. Fix oops in find_writeable_file.
227 Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
228 configure stronger authentication. Fix sfu symlinks so they can
229 be followed (not just recognized). Fix wraparound of bcc on
230 read responses when buffer size over 64K and also fix wrap of
231 max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in
232 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
233 on socket is returned over and over). Add POSIX (advisory) byte range
234 locking support (requires server with newest CIFS UNIX Extensions
235 to the protocol implemented). Slow down negprot slightly in port 139
236 RFC1001 case to give session_init time on buggy servers.
240 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
241 of readpages by eliminating one extra memcpy. Allow update of file size
242 from remote server even if file is open for write as long as mount is
243 directio. Recognize share mode security and send NTLM encrypted password
244 on tree connect if share mode negotiated.
248 Defer close of a file handle slightly if pending writes depend on that handle
249 (this reduces the EBADF bad file handle errors that can be logged under heavy
250 stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2
251 Fix SFU style symlinks and mknod needed for servers which do not support the
252 CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative
253 dentries so files that the client sees as deleted but that later get created
254 on the server will be recognized. Add client side permission check on setattr.
255 Timeout stuck requests better (where server has never responded or sent corrupt
260 Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
261 to be smaller at first (but increasing) so large write performance performance
262 over GigE is better. Do not hang thread on illegal byte range lock response
263 from Windows (Windows can send an RFC1001 size which does not match smb size) by
264 allowing an SMBs TCP length to be up to a few bytes longer than it should be.
265 wsize and rsize can now be larger than negotiated buffer size if server
266 supports large readx/writex, even when directio mount flag not specified.
267 Write size will in many cases now be 16K instead of 4K which greatly helps
268 file copy performance on lightly loaded networks. Fix oops in dnotify
269 when experimental config flag enabled. Make cifsFYI more granular.
273 Fix readdir caching when unlink removes file in current search buffer,
274 and this is followed by a rewind search to just before the deleted entry.
275 Do not attempt to set ctime unless atime and/or mtime change requested
276 (most servers throw it away anyway). Fix length check of received smbs
277 to be more accurate. Fix big endian problem with mapchars mount option,
278 and with a field returned by statfs.
282 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
283 For these older servers, add option for passing netbios name of server in
284 on mount (servernetbiosname). Add suspend support for power management, to
285 avoid cifsd thread preventing software suspend from working.
286 Add mount option for disabling the default behavior of sending byte range lock
287 requests to the server (necessary for certain applications which break with
288 mandatory lock behavior such as Evolution), and also mount option for
289 requesting case insensitive matching for path based requests (requesting
290 case sensitive is the default).
294 Add writepage performance improvements. Fix path name conversions
295 for long filenames on mounts which were done with "mapchars" mount option
296 specified. Ensure multiplex ids do not collide. Fix case in which
297 rmmod can oops if done soon after last unmount. Fix truncated
298 search (readdir) output when resume filename was a long filename.
299 Fix filename conversion when mapchars mount option was specified and
300 filename was a long filename.
304 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
305 Do not oops if root user kills cifs oplock kernel thread or
306 kills the cifsd thread (NB: killing the cifs kernel threads is not
307 recommended, unmount and rmmod cifs will kill them when they are
308 no longer needed). Fix readdir to ASCII servers (ie older servers
309 which do not support Unicode) and also require asterisk.
310 Fix out of memory case in which data could be written one page
311 off in the page cache.
315 Fix caching problem, in which readdir of directory containing a file
316 which was cached could cause the file's time stamp to be updated
317 without invalidating the readahead data (so we could get stale
318 file data on the client for that file even as the server copy changed).
319 Cleanup response processing so cifsd can not loop when abnormally
325 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
326 transact response for an SMB request and search entry split across two frames.
327 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
328 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
329 unless server explicitly claims to support them in CIFS Unix extensions
330 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
331 different users from the same client to the same server. Fix oops in
332 cifs_close. Add mount option for remapping reserved characters in
333 filenames (also allow recognizing files with created by SFU which have any
334 of these seven reserved characters, except backslash, to be recognized).
335 Fix invalid transact2 message (we were sometimes trying to interpret
336 oplock breaks as SMB responses). Add ioctl for checking that the
337 current uid matches the uid of the mounter (needed by umount.cifs).
338 Reduce the number of large buffer allocations in cifs response processing
339 (significantly reduces memory pressure under heavy stress with multiple
340 processes accessing the same server at the same time).
344 Fix updates of DOS attributes and time fields so that files on NT4 servers
345 do not get marked delete on close. Display sizes of cifs buffer pools in
346 cifs stats. Fix oops in unmount when cifsd thread being killed by
347 shutdown. Add generic readv/writev and aio support. Report inode numbers
348 consistently in readdir and lookup (when serverino mount option is
349 specified use the inode number that the server reports - for both lookup
350 and readdir, otherwise by default the locally generated inode number is used
351 for inodes created in either path since servers are not always able to
352 provide unique inode numbers when exporting multiple volumes from under one
357 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
358 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
359 (mostly affects NT4 servers) by retry with handle based network operation.
360 Add new POSIX Query FS Info for returning statfs info more accurately.
361 Handle passwords with multiple commas in them.
365 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
366 Fix capabilities flags for large readx so as to allow reads larger than 64K.
370 Add module init parm for large SMB buffer size (to allow it to be changed
371 from its default of 16K) which is especially useful for large file copy
372 when mounting with the directio mount option. Fix oops after
373 returning from mount when experimental ExtendedSecurity enabled and
374 SpnegoNegotiated returning invalid error. Fix case to retry better when
375 peek returns from 1 to 3 bytes on socket which should have more data.
376 Fixed path based calls (such as cifs lookup) to handle path names
377 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
378 from Samba server to DC (Samba required dummy LM password).
382 Turn off DNOTIFY (directory change notification support) by default
383 (unless built with the experimental flag) to fix hang with KDE
384 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
385 waiting on an SMB response) in SendReceive when session dies but
386 reconnects quickly from another task. Add module init parms for
387 minimum number of large and small network buffers in the buffer pools,
388 and for the maximum number of simultaneous requests.
392 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
393 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
394 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
395 improperly zeroed buffer in CIFS Unix extensions set times call.
399 Fix internationalization problem in cifs readdir with filenames that map to
400 longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
401 for readdir to netapp servers. Fix search rewind (seek into readdir to return
402 non-consecutive entries). Do not do readdir when server negotiates
403 buffer size to small to fit filename. Add support for reading POSIX ACLs from
404 the server (add also acl and noacl mount options).
408 Optionally allow using server side inode numbers, rather than client generated
409 ones by specifying mount option "serverino" - this is required for some apps
410 to work which double check hardlinked files and have persistent inode numbers.
414 Multiple bigendian fixes. On little endian systems (for reconnect after
415 network failure) fix tcp session reconnect code so we do not try first
416 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
417 as directories rather than symlinks because we can do follow link on them.
421 Add config option to enable XATTR (extended attribute) support, mapping
422 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
423 minor fixes pointed out by the Stanford SWAT checker (mostly missing
424 or out of order NULL pointer checks in little used error paths).
428 Add new mount parm to control whether mode check (generic_permission) is done
429 on the client. If Unix extensions are enabled and the uids on the client
430 and server do not match, client permission checks are meaningless on
431 server uids that do not exist on the client (this does not affect the
432 normal ACL check which occurs on the server). Fix default uid
433 on mknod to match create and mkdir. Add optional mount parm to allow
434 override of the default uid behavior (in which the server sets the uid
435 and gid of newly created files). Normally for network filesystem mounts
436 user want the server to set the uid/gid on newly created files (rather than
437 using uid of the client processes you would in a local filesystem).
441 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
442 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
443 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
444 (block/char/fifo) properly. Remove spurious mount warning log entry when
445 credentials passed as mount argument. Set major/minor device number in
446 inode for block and char devices when unix extensions enabled.
450 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
451 amounts of return data. Properly limit requests to MAX_REQ (50
452 is the usual maximum active multiplex SMB/CIFS requests per server).
453 Do not kill cifsd (and thus hurt the other SMB session) when more than one
454 session to the same server (but with different userids) exists and one
455 of the two user's smb sessions is being removed while leaving the other.
456 Do not loop reconnecting in cifsd demultiplex thread when admin
457 kills the thread without going through unmount.
461 Do not rename hardlinked files (since that should be a noop). Flush
462 cached write behind data when reopening a file after session abend,
463 except when already in write. Grab per socket sem during reconnect
464 to avoid oops in sendmsg if overlapping with reconnect. Do not
465 reset cached inode file size on readdir for files open for write on
471 Update number of blocks in file so du command is happier (in Linux a fake
472 blocksize of 512 is required for calculating number of blocks in inode).
473 Fix prepare write of partial pages to read in data from server if possible.
474 Fix race on tcpStatus field between unmount and reconnection code, causing
475 cifsd process sometimes to hang around forever. Improve out of memory
476 checks in cifs_filldir
480 Fix incorrect file size in file handle based setattr on big endian hardware.
481 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
482 and closing file structs in writepage/partialpagewrite. Add statistics
483 for each mounted share (new menuconfig option). Fix endianness problem in
484 volume information displayed in /proc/fs/cifs/DebugData (only affects
485 affects big endian architectures). Prevent renames while constructing
486 path names for open, mkdir and rmdir.
490 Change to mempools for alloc smb request buffers and multiplex structs
491 to better handle low memory problems (and potential deadlocks).
495 Fix incomplete listings of large directories on Samba servers when Unix
496 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
497 rename deadlock when writing out dirty pages at same time.
501 Fix open of files in which O_CREATE can cause the mode to change in
502 some cases. Fix case in which retry of write overlaps file close.
503 Fix PPC64 build error. Reduce excessive stack usage in smb password
504 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
508 Fixes for large file copy, signal handling, socket retry, buffer
509 allocation and low memory situations.
513 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
514 also now allowing support for specifying client netbiosname. NT4 support added.
518 Fix reconnection (and certain failed mounts) to properly wake up the
519 blocked users thread so it does not seem hung (in some cases was blocked
520 until the cifs receive timeout expired). Fix spurious error logging
521 to kernel log when application with open network files killed.
525 Fix /proc/fs module unload warning message (that could be logged
526 to the kernel log). Fix intermittent failure in connectathon
527 test7 (hardlink count not immediately refreshed in case in which
528 inode metadata can be incorrectly kept cached when time near zero)
532 Allow file_mode and dir_mode (specified at mount time) to be enforced
533 locally (the server already enforced its own ACLs too) for servers
534 that do not report the correct mode (do not support the
535 CIFS Unix Extensions).
539 Fix some small memory leaks in some unmount error paths. Fix major leak
540 of cache pages in readpages causing multiple read oriented stress
541 testcases (including fsx, and even large file copy) to fail over time.
545 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
546 This allows files that differ only in case and improves performance of file
547 creation and file open to such servers. Fix semaphore conflict which causes
548 slow delete of open file to Samba (which unfortunately can cause an oplock
549 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
553 fixes to cifs_readpages for fsx test case
557 Fix caching data integrity bug when extending file size especially when no
558 oplock on file. Fix spurious logging of valid already parsed mount options
559 that are parsed outside of the cifs vfs such as nosuid.
564 Connect to server when port number override not specified, and tcp port
565 unitialized. Reset search to restart at correct file when kernel routine
566 filldir returns error during large directory searches (readdir).
570 Fix caching problem when files opened by multiple clients in which
571 page cache could contain stale data, and write through did
572 not occur often enough while file was still open when read ahead
573 (read oplock) not allowed. Treat "sep=" when first mount option
574 as an override of comma as the default separator between mount
579 Allow passwords longer than 16 bytes. Allow null password string.
583 Gracefully clean up failed mounts when attempting to mount to servers such as
584 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
585 embedded commas in mount parsing of passwords.
589 Invalidate local inode cached pages on oplock break and when last file
590 instance is closed so that the client does not continue using stale local
591 copy rather than later modified server copy of file. Do not reconnect
592 when server drops the tcp session prematurely before negotiate
593 protocol response. Fix oops in reopen_file when dentry freed. Allow
594 the support for CIFS Unix Extensions to be disabled via proc interface.
598 Fix hang in commit_write during reconnection of open files under heavy load.
599 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
600 which also fixes any possible races when cifs signatures are enabled in SMBs
601 being sent out of signature sequence number order.
605 Fix byte range locking bug (endian problem) causing bad offset and
610 Fix oops (in send_sig) caused by CIFS unmount code trying to
611 wake up the demultiplex thread after it had exited. Do not log
612 error on harmless oplock release of closed handle.
616 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
617 Fix problem reconnecting secondary mounts to same server after session
618 failure. Fix invalid dentry - race in mkdir when directory gets created
619 by another client between the lookup and mkdir.
623 Fix to list processing in reopen_files. Fix reconnection when server hung
624 but tcpip session still alive. Set proper timeout on socket read.
628 Add missing mount options including iocharset. SMP fixes in write and open.
629 Fix errors in reconnecting after TCP session failure. Fix module unloading
630 of default nls codepage
634 Active smb transactions should never go negative (fix double FreeXid). Fix
635 list processing in file routines. Check return code on kmalloc in open.
636 Fix spinlock usage for SMP.
640 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
641 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
642 on create hard link when server does not support them.
646 Fix scheduling while atomic error in getting inode info on newly created file.
647 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
651 Fix oops on write to dead tcp session. Remove error log write for case when file open
652 O_CREAT but not O_EXCL
656 Fix non-POSIX behavior on rename of open file and delete of open file by taking
657 advantage of trans2 SetFileInfo rename facility if available on target server.
658 Retry on ENOSPC and EAGAIN socket errors.
662 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
663 allocation size miscalculation. After oplock token lost do not read through
668 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
672 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
673 during auto reconnection to server after server recovered from failure.
677 Finish support for Linux 2.5 open/create changes, which removes the
678 redundant NTCreate/QPathInfo/close that was sent during file create.
679 Enable oplock by default. Enable packet signing by default (needed to
680 access many recent Windows servers)
684 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
685 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
686 we will choose a cifs user session (smb uid) that better matches the local
687 uid if a) the mount uid does not match the current uid and b) we have another
688 session to the same server (ip address) for a different mount which
689 matches the current local uid.
693 Add support for mknod of block or character devices. Fix oplock
694 code (distributed caching) to properly send response to oplock
699 Finish up CIFS packet digital signing for the default
700 NTLM security case. This should help Windows 2003
701 network interoperability since it is common for
702 packet signing to be required now. Fix statfs (stat -f)
703 which recently started returning errors due to
704 invalid value (-1 instead of 0) being set in the
705 struct kstatfs f_ffiles field.
709 Fix oops on stopping oplock thread when removing cifs when
714 Fix mount options for ro (readonly), uid, gid and file and directory mode.
718 Fix errors displayed on failed mounts to be more understandable.
719 Fixed various incorrect or misleading smb to posix error code mappings.
723 Fix display of NTFS DFS junctions to display as symlinks.
724 They are the network equivalent. Fix oops in
725 cifs_partialpagewrite caused by missing spinlock protection
726 of openfile linked list. Allow writebehind caching errors to
727 be returned to the application at file close.
731 Clean up options displayed in /proc/mounts by show_options to
732 be more consistent with other filesystems.
736 Fix delete of readonly file to Windows servers. Reflect
737 presence or absence of read only dos attribute in mode
738 bits for servers that do not support CIFS Unix extensions.
739 Fix shortened results on readdir of large directories to
740 servers supporting CIFS Unix extensions (caused by
741 incorrect resume key).
745 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
749 unload nls if mount fails.
753 Add resume key support to search (readdir) code to workaround
754 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
755 allows disabling caching of attribute information for
760 Add more oplock handling (distributed caching code). Remove
761 dead code. Remove excessive stack space utilization from
766 Fix oops in get dfs referral (triggered when null path sent in to
767 mount). Add support for overriding rsize at mount time.
771 Fix buffer overrun in readdir which caused intermittent kernel oopses.
772 Fix writepage code to release kmap on write data. Allow "-ip=" new
773 mount option to be passed in on parameter distinct from the first part
774 (server name portion of) the UNC name. Allow override of the
775 tcp port of the target server via new mount option "-port="
779 Fix search handle leak on rewind. Fix setuid and gid so that they are
780 reflected in the local inode immediately. Cleanup of whitespace
781 to make 2.4 and 2.5 versions more consistent.
786 Fix signal sending so that captive thread (cifsd) exits on umount
787 (which was causing the warning in kmem_cache_free of the request buffers
788 at rmmod time). This had broken as a sideeffect of the recent global
789 kernel change to daemonize. Fix memory leak in readdir code which
790 showed up in "ls -R" (and applications that did search rewinding).
794 Reconnect tids and fids after session reconnection (still do not
795 reconnect byte range locks though). Fix problem caching
796 lookup information for directory inodes, improving performance,
797 especially in deep directory trees. Fix various build warnings.
801 Finish fixes to commit write for caching/readahead consistency. fsx
802 now works to Samba servers. Fix oops caused when readahead
803 was interrupted by a signal.
807 Fix data corruption (in partial page after truncate) that caused fsx to
808 fail to Windows servers. Cleaned up some extraneous error logging in
809 common error paths. Add generic sendfile support.
813 Fix memory leak in AllocMidQEntry.
814 Finish reconnection logic, so connection with server can be dropped
815 (or server rebooted) and the cifs client will reconnect.
819 Fix temporary socket leak when bad userid or password specified
820 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
821 over 16K to allow negotiation of up to Samba and Windows server default read
822 sizes. Add support for readpages
826 Fix oops when username not passed in on mount. Extensive fixes and improvements
827 to error logging (strip redundant newlines, change debug macros to ensure newline
828 passed in and to be more consistent). Fix writepage wrong file handle problem,
829 a readonly file handle could be incorrectly used to attempt to write out
830 file updates through the page cache to multiply open files. This could cause
831 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
832 shares to the same Windows server when using different usernames
833 (doing this to Samba servers worked but Windows was rejecting it) - now it is
834 possible to use different userids when connecting to the same server from a
835 Linux client. Fix oops when treeDisconnect called during unmount on
836 previously freed socket.
840 Fix oops in readpages caused by not setting address space operations in inode in
845 Includes support for deleting of open files and renaming over existing files (per POSIX
846 requirement). Add readlink support for Windows junction points (directory symlinks).
850 Changed read and write to go through pagecache. Added additional address space operations.
851 Memory mapped operations now working.
855 Added writepage code for additional memory mapping support. Fixed leak in xids causing
856 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
857 every stat call. Additional formatting cleanup.
861 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
865 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
866 Also included a modified version of his fix to protect global list manipulation of
867 the smb session and tree connection and mid related global variables.
871 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
872 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
873 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
877 More stylistic updates to better match kernel style. Add additional statistics
878 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
879 and CIFS Packet Signing enablement.
883 Replace call to sleep_on with safer wait_on_event.
884 Make stylistic changes to better match kernel style recommendations.
885 Remove most typedef usage (except for the PDUs themselves).
889 Update mount so the -unc mount option is no longer required (the ip address can be specified
890 in a UNC style device name. Implementation of readpage/writepage started.
894 Fix intermittent problem with incorrect smb header checking on badly
895 fragmented tcp responses
899 Fixes to setting of allocation size and file size.
903 Various 2.5.38 fixes. Now works on 2.5.38
907 Prepare for 2.5 kernel merge. Remove ifdefs.
911 Socket buffer management fixes. Fix dual free.
915 Various big endian fixes for hardlinks and symlinks and also for dfs.
919 Various big endian fixes for servers with Unix extensions such as Samba
923 Various FindNext fixes for incorrect filenames on large directory searches on big endian
924 clients. basic posix file i/o tests now work on big endian machines, not just le
928 SessionSetup and NegotiateProtocol now work from Big Endian machines.
929 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
930 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
934 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
935 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
939 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
940 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
941 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
942 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
946 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
947 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
951 Rewrote much of connection and mount/unmount logic to handle bugs with
952 multiple uses to same share, multiple users to same server etc.
956 Fixed major problem with dentry corruption (missing call to dput)
960 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
961 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
962 although corresponding function not fully implemented in the vfs yet
966 Fixed dentry caching bug, misc. cleanup
970 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
971 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
972 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
976 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
977 and tested against Samba 2.2.5
982 1) Fixed lockrange to be correct (it was one byte too short)
984 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
985 show range as locked when there is a conflict with an existing lock.
987 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
988 in most cases. Eventually will offer optional ability to query server for the correct perms.
990 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
991 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
994 4) Fixed error logging of valid mount options
996 5) Removed logging of password field.
998 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
999 and cleaned them up and made them more consistent with other cifs functions.
1001 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
1002 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1003 nor is the symlink support using the Unix extensions
1005 8) Started adding the readlink and follow_link code
projects / linux-2.6 / blob