3 Fix memory leak in reconnect. Fix oops in DFS mount error path.
4 Set s_maxbytes to smaller (the max that vfs can handle) so that
5 sendfile will now work over cifs mounts again. Add noforcegid
6 and noforceuid mount parameters. Fix small mem leak when using
7 ntlmv2. Fix 2nd mount to same server but with different port to
8 be allowed (rather than reusing the 1st port) - only when the
9 user explicitly overrides the port on the 2nd mount.
13 Client uses server inode numbers (which are persistent) rather than
14 client generated ones by default (mount option "serverino" turned
15 on by default if server supports it). Add forceuid and forcegid
16 mount options (so that when negotiating unix extensions specifying
17 which uid mounted does not immediately force the server's reported
18 uids to be overridden). Add support for scope mount parm. Improve
19 hard link detection to use same inode for both. Do not set
20 read-only dos attribute on directories (for chmod) since Windows
21 explorer special cases this attribute bit for directories for
26 Guard against buffer overruns in various UCS-2 to UTF-8 string conversions
27 when the UTF-8 string is composed of unusually long (more than 4 byte) converted
28 characters. Add support for mounting root of a share which redirects immediately
29 to DFS target. Convert string conversion functions from Unicode to more
30 accurately mark string length before allocating memory (which may help the
31 rare cases where a UTF-8 string is much larger than the UCS2 string that
32 we converted from). Fix endianness of the vcnum field used during
33 session setup to distinguish multiple mounts to same server from different
34 userids. Raw NTLMSSP fixed (it requires /proc/fs/cifs/experimental
35 flag to be set to 2, and mount must enable krb5 to turn on extended security).
36 Performance of file create to Samba improved (posix create on lookup
37 removes 1 of 2 network requests sent on file create)
41 Improve support for multiple security contexts to the same server. We
42 used to use the same "vcnumber" for all connections which could cause
43 the server to treat subsequent connections, especially those that
44 are authenticated as guest, as reconnections, invalidating the earlier
45 user's smb session. This fix allows cifs to mount multiple times to the
46 same server with different userids without risking invalidating earlier
47 established security contexts. fsync now sends SMB Flush operation
48 to better ensure that we wait for server to write all of the data to
49 server disk (not just write it over the network). Add new mount
50 parameter to allow user to disable sending the (slow) SMB flush on
51 fsync if desired (fsync still flushes all cached write data to the server).
52 Posix file open support added (turned off after one attempt if server
53 fails to support it properly, as with Samba server versions prior to 3.3.2)
54 Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
55 little memory for the "nativeFileSystem" field returned by the server
56 during mount). Endian convert inode numbers if necessary (makes it easier
57 to compare inode numbers on network files from big endian systems).
61 Add "forcemandatorylock" mount option to allow user to use mandatory
62 rather than posix (advisory) byte range locks, even though server would
63 support posix byte range locks. Fix query of root inode when prefixpath
64 specified and user does not have access to query information about the
65 top of the share. Fix problem in 2.6.28 resolving DFS paths to
66 Samba servers (worked to Windows). Fix rmdir so that pending search
67 (readdir) requests do not get invalid results which include the now
68 removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
69 when using DFS. Add better file create support to servers which support
70 the CIFS POSIX protocol extensions (this adds support for new flags
71 on create, and improves semantics for write of locked ranges).
75 Various fixes to make delete of open files behavior more predictable
76 (when delete of an open file fails we mark the file as "delete-on-close"
77 in a way that more servers accept, but only if we can first rename the
78 file to a temporary name). Add experimental support for more safely
79 handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
80 sends, and also let tcp autotune the socket send and receive buffers.
81 This reduces the number of EAGAIN errors returned by TCP/IP in
82 high stress workloads (and the number of retries on socket writes
83 when sending large SMBWriteX requests). Fix case in which a portion of
84 data can in some cases not get written to the file on the server before the
85 file is closed. Fix DFS parsing to properly handle path consumed field,
86 and to handle certain codepage conversions better. Fix mount and
87 umount race that can cause oops in mount or umount or reconnect.
91 Fix premature write failure on congested networks (we would give up
92 on EAGAIN from the socket too quickly on large writes).
93 Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
94 Fix endian problems in acl (mode from/to cifs acl) on bigendian
95 architectures. Fix problems with preserving timestamps on copying open
96 files (e.g. "cp -a") to Windows servers. For mkdir and create honor setgid bit
97 on parent directory when server supports Unix Extensions but not POSIX
98 create. Update cifs.upcall version to handle new Kerberos sec flags
99 (this requires update of cifs.upcall program from Samba). Fix memory leak
100 on dns_upcall (resolving DFS referralls). Fix plain text password
101 authentication (requires setting SecurityFlags to 0x30030 to enable
102 lanman and plain text though). Fix writes to be at correct offset when
103 file is open with O_APPEND and file is on a directio (forcediretio) mount.
104 Fix bug in rewinding readdir directory searches. Add nodfs mount option.
108 DFS support added (Microsoft Distributed File System client support needed
109 for referrals which enable a hierarchical name space among servers).
110 Disable temporary caching of mode bits to servers which do not support
111 storing of mode (e.g. Windows servers, when client mounts without cifsacl
112 mount option) and add new "dynperm" mount option to enable temporary caching
113 of mode (enable old behavior). Fix hang on mount caused when server crashes
114 tcp session during negotiate protocol.
118 Fix oops on second mount to server when null auth is used.
119 Enable experimental Kerberos support. Return writebehind errors on flush
120 and sync so that events like out of disk space get reported properly on
121 cached files. Fix setxattr failure to certain Samba versions. Fix mount
122 of second share to disconnected server session (autoreconnect on this).
123 Add ability to modify cifs acls for handling chmod (when mounted with
124 cifsacl flag). Fix prefixpath path separator so we can handle mounts
125 with prefixpaths longer than one directory (one path component) when
126 mounted to Windows servers. Fix slow file open when cifsacl
127 enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
132 Fix memory leak in statfs when mounted to very old servers (e.g.
133 Windows 9x). Add new feature "POSIX open" which allows servers
134 which support the current POSIX Extensions to provide better semantics
135 (e.g. delete for open files opened with posix open). Take into
136 account umask on posix mkdir not just older style mkdir. Add
137 ability to mount to IPC$ share (which allows CIFS named pipes to be
138 opened, read and written as if they were files). When 1st tree
139 connect fails (e.g. due to signing negotiation failure) fix
140 leak that causes cifsd not to stop and rmmod to fail to cleanup
141 cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
142 bigendian architectures. Fix possible memory corruption when
143 EAGAIN returned on kern_recvmsg. Return better error if server
144 requires packet signing but client has disabled it. When mounted
145 with cifsacl mount option - mode bits are approximated based
146 on the contents of the ACL of the file or directory. When cifs
147 mount helper is missing convert make sure that UNC name
148 has backslash (not forward slash) between ip address of server
153 Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
154 done with "serverino" mount option). Add support for POSIX Unlink
155 (helps with certain sharing violation cases when server such as
156 Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
157 mount option to allow disabling the CIFS Unix Extensions for just
158 that mount. Fix hang on spinlock in find_writable_file (race when
159 reopening file after session crash). Byte range unlock request to
160 windows server could unlock more bytes (on server copy of file)
161 than intended if start of unlock request is well before start of
162 a previous byte range lock that we issued.
166 IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
167 address after the "ip=" mount option, at least until mount.cifs is fixed to
168 handle DNS host to ipv6 name translation). Accept override of uid or gid
169 on mount even when Unix Extensions are negotiated (it used to be ignored
170 when Unix Extensions were ignored). This allows users to override the
171 default uid and gid for files when they are certain that the uids or
172 gids on the server do not match those of the client. Make "sec=none"
173 mount override username (so that null user connection is attempted)
174 to match what documentation said. Support for very large reads, over 127K,
175 available to some newer servers (such as Samba 3.0.26 and later but
176 note that it also requires setting CIFSMaxBufSize at module install
177 time to a larger value which may hurt performance in some cases).
178 Make sign option force signing (or fail if server does not support it).
182 Fix mtime bouncing around from local idea of last write times to remote time.
183 Fix hang (in i_size_read) when simultaneous size update of same remote file
184 on smp system corrupts sequence number. Do not reread unnecessarily partial page
185 (which we are about to overwrite anyway) when writing out file opened rw.
186 When DOS attribute of file on non-Unix server's file changes on the server side
187 from read-only back to read-write, reflect this change in default file mode
188 (we had been leaving a file's mode read-only until the inode were reloaded).
189 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
190 when archive dos attribute not set and we are changing mode back to writeable
191 on server which does not support the Unix Extensions). Remove read only dos
192 attribute on chmod when adding any write permission (ie on any of
193 user/group/other (not all of user/group/other ie 0222) when
194 mounted to windows. Add support for POSIX MkDir (slight performance
195 enhancement and eliminates the network race between the mkdir and set
196 path info of the mode).
201 Fix oops in list_del during mount caused by unaligned string.
202 Fix file corruption which could occur on some large file
203 copies caused by writepages page i/o completion bug.
204 Seek to SEEK_END forces check for update of file size for non-cached
205 files. Allow file size to be updated on remote extend of locally open,
206 non-cached file. Fix reconnect to newer Samba servers (or other servers
207 which support the CIFS Unix/POSIX extensions) so that we again tell the
208 server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
209 Add experimental support for new POSIX Open/Mkdir (which returns
210 stat information on the open, and allows setting the mode).
214 Support deep tree mounts. Better support OS/2, Win9x (DOS) time stamps.
215 Allow null user to be specified on mount ("username="). Do not return
216 EINVAL on readdir when filldir fails due to overwritten blocksize
217 (fixes FC problem). Return error in rename 2nd attempt retry (ie report
218 if rename by handle also fails, after rename by path fails, we were
219 not reporting whether the retry worked or not). Fix NTLMv2 to
220 work to Windows servers (mount with option "sec=ntlmv2").
224 Do not time out lockw calls when using posix extensions. Do not
225 time out requests if server still responding reasonably fast
226 on requests on other threads. Improve POSIX locking emulation,
227 (lock cancel now works, and unlock of merged range works even
228 to Windows servers now). Fix oops on mount to lanman servers
229 (win9x, os/2 etc.) when null password. Do not send listxattr
230 (SMB to query all EAs) if nouser_xattr specified. Fix SE Linux
231 problem (instantiate inodes/dentries in right order for readdir).
235 Rewritten sessionsetup support, including support for legacy SMB
236 session setup needed for OS/2 and older servers such as Windows 95 and 98.
237 Fix oops on ls to OS/2 servers. Add support for level 1 FindFirst
238 so we can do search (ls etc.) to OS/2. Do not send NTCreateX
239 or recent levels of FindFirst unless server says it supports NT SMBs
240 (instead use legacy equivalents from LANMAN dialect). Fix to allow
241 NTLMv2 authentication support (now can use stronger password hashing
242 on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
243 Allow override of global cifs security flags on mount via "sec=" option(s).
247 POSIX locking to servers which support CIFS POSIX Extensions
248 (disabled by default controlled by proc/fs/cifs/Experimental).
249 Handle conversion of long share names (especially Asian languages)
250 to Unicode during mount. Fix memory leak in sess struct on reconnect.
251 Fix rare oops after acpi suspend. Fix O_TRUNC opens to overwrite on
252 cifs open which helps rare case when setpathinfo fails or server does
257 Fix slow oplock break when mounted to different servers at the same time and
258 the tids match and we try to find matching fid on wrong server. Fix read
259 looping when signing required by server (2.6.16 kernel only). Fix readdir
260 vs. rename race which could cause each to hang. Return . and .. even
261 if server does not. Allow searches to skip first three entries and
262 begin at any location. Fix oops in find_writeable_file.
266 Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
267 configure stronger authentication. Fix sfu symlinks so they can
268 be followed (not just recognized). Fix wraparound of bcc on
269 read responses when buffer size over 64K and also fix wrap of
270 max smb buffer size when CIFSMaxBufSize over 64K. Fix oops in
271 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
272 on socket is returned over and over). Add POSIX (advisory) byte range
273 locking support (requires server with newest CIFS UNIX Extensions
274 to the protocol implemented). Slow down negprot slightly in port 139
275 RFC1001 case to give session_init time on buggy servers.
279 Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
280 of readpages by eliminating one extra memcpy. Allow update of file size
281 from remote server even if file is open for write as long as mount is
282 directio. Recognize share mode security and send NTLM encrypted password
283 on tree connect if share mode negotiated.
287 Defer close of a file handle slightly if pending writes depend on that handle
288 (this reduces the EBADF bad file handle errors that can be logged under heavy
289 stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2
290 Fix SFU style symlinks and mknod needed for servers which do not support the
291 CIFS Unix Extensions. Fix setfacl/getfacl on bigendian. Timeout negative
292 dentries so files that the client sees as deleted but that later get created
293 on the server will be recognized. Add client side permission check on setattr.
294 Timeout stuck requests better (where server has never responded or sent corrupt
299 Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
300 to be smaller at first (but increasing) so large write performance performance
301 over GigE is better. Do not hang thread on illegal byte range lock response
302 from Windows (Windows can send an RFC1001 size which does not match smb size) by
303 allowing an SMBs TCP length to be up to a few bytes longer than it should be.
304 wsize and rsize can now be larger than negotiated buffer size if server
305 supports large readx/writex, even when directio mount flag not specified.
306 Write size will in many cases now be 16K instead of 4K which greatly helps
307 file copy performance on lightly loaded networks. Fix oops in dnotify
308 when experimental config flag enabled. Make cifsFYI more granular.
312 Fix readdir caching when unlink removes file in current search buffer,
313 and this is followed by a rewind search to just before the deleted entry.
314 Do not attempt to set ctime unless atime and/or mtime change requested
315 (most servers throw it away anyway). Fix length check of received smbs
316 to be more accurate. Fix big endian problem with mapchars mount option,
317 and with a field returned by statfs.
321 Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
322 For these older servers, add option for passing netbios name of server in
323 on mount (servernetbiosname). Add suspend support for power management, to
324 avoid cifsd thread preventing software suspend from working.
325 Add mount option for disabling the default behavior of sending byte range lock
326 requests to the server (necessary for certain applications which break with
327 mandatory lock behavior such as Evolution), and also mount option for
328 requesting case insensitive matching for path based requests (requesting
329 case sensitive is the default).
333 Add writepage performance improvements. Fix path name conversions
334 for long filenames on mounts which were done with "mapchars" mount option
335 specified. Ensure multiplex ids do not collide. Fix case in which
336 rmmod can oops if done soon after last unmount. Fix truncated
337 search (readdir) output when resume filename was a long filename.
338 Fix filename conversion when mapchars mount option was specified and
339 filename was a long filename.
343 Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
344 Do not oops if root user kills cifs oplock kernel thread or
345 kills the cifsd thread (NB: killing the cifs kernel threads is not
346 recommended, unmount and rmmod cifs will kill them when they are
347 no longer needed). Fix readdir to ASCII servers (ie older servers
348 which do not support Unicode) and also require asterisk.
349 Fix out of memory case in which data could be written one page
350 off in the page cache.
354 Fix caching problem, in which readdir of directory containing a file
355 which was cached could cause the file's time stamp to be updated
356 without invalidating the readahead data (so we could get stale
357 file data on the client for that file even as the server copy changed).
358 Cleanup response processing so cifsd can not loop when abnormally
364 Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
365 transact response for an SMB request and search entry split across two frames.
366 Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
367 as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
368 unless server explicitly claims to support them in CIFS Unix extensions
369 POSIX ACL capability bit. Fix packet signing when multiuser mounting with
370 different users from the same client to the same server. Fix oops in
371 cifs_close. Add mount option for remapping reserved characters in
372 filenames (also allow recognizing files with created by SFU which have any
373 of these seven reserved characters, except backslash, to be recognized).
374 Fix invalid transact2 message (we were sometimes trying to interpret
375 oplock breaks as SMB responses). Add ioctl for checking that the
376 current uid matches the uid of the mounter (needed by umount.cifs).
377 Reduce the number of large buffer allocations in cifs response processing
378 (significantly reduces memory pressure under heavy stress with multiple
379 processes accessing the same server at the same time).
383 Fix updates of DOS attributes and time fields so that files on NT4 servers
384 do not get marked delete on close. Display sizes of cifs buffer pools in
385 cifs stats. Fix oops in unmount when cifsd thread being killed by
386 shutdown. Add generic readv/writev and aio support. Report inode numbers
387 consistently in readdir and lookup (when serverino mount option is
388 specified use the inode number that the server reports - for both lookup
389 and readdir, otherwise by default the locally generated inode number is used
390 for inodes created in either path since servers are not always able to
391 provide unique inode numbers when exporting multiple volumes from under one
396 Allow new nouser_xattr mount parm to disable xattr support for user namespace.
397 Do not flag user_xattr mount parm in dmesg. Retry failures setting file time
398 (mostly affects NT4 servers) by retry with handle based network operation.
399 Add new POSIX Query FS Info for returning statfs info more accurately.
400 Handle passwords with multiple commas in them.
404 Fix default mode in sysfs of cifs module parms. Remove old readdir routine.
405 Fix capabilities flags for large readx so as to allow reads larger than 64K.
409 Add module init parm for large SMB buffer size (to allow it to be changed
410 from its default of 16K) which is especially useful for large file copy
411 when mounting with the directio mount option. Fix oops after
412 returning from mount when experimental ExtendedSecurity enabled and
413 SpnegoNegotiated returning invalid error. Fix case to retry better when
414 peek returns from 1 to 3 bytes on socket which should have more data.
415 Fixed path based calls (such as cifs lookup) to handle path names
416 longer than 530 (now can handle PATH_MAX). Fix pass through authentication
417 from Samba server to DC (Samba required dummy LM password).
421 Turn off DNOTIFY (directory change notification support) by default
422 (unless built with the experimental flag) to fix hang with KDE
423 file browser. Fix DNOTIFY flag mappings. Fix hang (in wait_event
424 waiting on an SMB response) in SendReceive when session dies but
425 reconnects quickly from another task. Add module init parms for
426 minimum number of large and small network buffers in the buffer pools,
427 and for the maximum number of simultaneous requests.
431 Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
432 and other POSIX CIFS compliant servers. Fix error mapping for getfacl
433 to EOPNOTSUPP when server does not support posix acls on the wire. Fix
434 improperly zeroed buffer in CIFS Unix extensions set times call.
438 Fix internationalization problem in cifs readdir with filenames that map to
439 longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
440 for readdir to netapp servers. Fix search rewind (seek into readdir to return
441 non-consecutive entries). Do not do readdir when server negotiates
442 buffer size to small to fit filename. Add support for reading POSIX ACLs from
443 the server (add also acl and noacl mount options).
447 Optionally allow using server side inode numbers, rather than client generated
448 ones by specifying mount option "serverino" - this is required for some apps
449 to work which double check hardlinked files and have persistent inode numbers.
453 Multiple bigendian fixes. On little endian systems (for reconnect after
454 network failure) fix tcp session reconnect code so we do not try first
455 to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
456 as directories rather than symlinks because we can do follow link on them.
460 Add config option to enable XATTR (extended attribute) support, mapping
461 xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
462 minor fixes pointed out by the Stanford SWAT checker (mostly missing
463 or out of order NULL pointer checks in little used error paths).
467 Add new mount parm to control whether mode check (generic_permission) is done
468 on the client. If Unix extensions are enabled and the uids on the client
469 and server do not match, client permission checks are meaningless on
470 server uids that do not exist on the client (this does not affect the
471 normal ACL check which occurs on the server). Fix default uid
472 on mknod to match create and mkdir. Add optional mount parm to allow
473 override of the default uid behavior (in which the server sets the uid
474 and gid of newly created files). Normally for network filesystem mounts
475 user want the server to set the uid/gid on newly created files (rather than
476 using uid of the client processes you would in a local filesystem).
480 Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
481 info into /proc/fs/cifs/DebugData. Fix oops in rare oops in readdir
482 (in build_wildcard_path_from_dentry). Fix mknod to pass type field
483 (block/char/fifo) properly. Remove spurious mount warning log entry when
484 credentials passed as mount argument. Set major/minor device number in
485 inode for block and char devices when unix extensions enabled.
489 Fix /proc/fs/cifs/Stats and DebugData display to handle larger
490 amounts of return data. Properly limit requests to MAX_REQ (50
491 is the usual maximum active multiplex SMB/CIFS requests per server).
492 Do not kill cifsd (and thus hurt the other SMB session) when more than one
493 session to the same server (but with different userids) exists and one
494 of the two user's smb sessions is being removed while leaving the other.
495 Do not loop reconnecting in cifsd demultiplex thread when admin
496 kills the thread without going through unmount.
500 Do not rename hardlinked files (since that should be a noop). Flush
501 cached write behind data when reopening a file after session abend,
502 except when already in write. Grab per socket sem during reconnect
503 to avoid oops in sendmsg if overlapping with reconnect. Do not
504 reset cached inode file size on readdir for files open for write on
510 Update number of blocks in file so du command is happier (in Linux a fake
511 blocksize of 512 is required for calculating number of blocks in inode).
512 Fix prepare write of partial pages to read in data from server if possible.
513 Fix race on tcpStatus field between unmount and reconnection code, causing
514 cifsd process sometimes to hang around forever. Improve out of memory
515 checks in cifs_filldir
519 Fix incorrect file size in file handle based setattr on big endian hardware.
520 Fix oops in build_path_from_dentry when out of memory. Add checks for invalid
521 and closing file structs in writepage/partialpagewrite. Add statistics
522 for each mounted share (new menuconfig option). Fix endianness problem in
523 volume information displayed in /proc/fs/cifs/DebugData (only affects
524 affects big endian architectures). Prevent renames while constructing
525 path names for open, mkdir and rmdir.
529 Change to mempools for alloc smb request buffers and multiplex structs
530 to better handle low memory problems (and potential deadlocks).
534 Fix incomplete listings of large directories on Samba servers when Unix
535 extensions enabled. Fix oops when smb_buffer can not be allocated. Fix
536 rename deadlock when writing out dirty pages at same time.
540 Fix open of files in which O_CREATE can cause the mode to change in
541 some cases. Fix case in which retry of write overlaps file close.
542 Fix PPC64 build error. Reduce excessive stack usage in smb password
543 hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
547 Fixes for large file copy, signal handling, socket retry, buffer
548 allocation and low memory situations.
552 Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
553 also now allowing support for specifying client netbiosname. NT4 support added.
557 Fix reconnection (and certain failed mounts) to properly wake up the
558 blocked users thread so it does not seem hung (in some cases was blocked
559 until the cifs receive timeout expired). Fix spurious error logging
560 to kernel log when application with open network files killed.
564 Fix /proc/fs module unload warning message (that could be logged
565 to the kernel log). Fix intermittent failure in connectathon
566 test7 (hardlink count not immediately refreshed in case in which
567 inode metadata can be incorrectly kept cached when time near zero)
571 Allow file_mode and dir_mode (specified at mount time) to be enforced
572 locally (the server already enforced its own ACLs too) for servers
573 that do not report the correct mode (do not support the
574 CIFS Unix Extensions).
578 Fix some small memory leaks in some unmount error paths. Fix major leak
579 of cache pages in readpages causing multiple read oriented stress
580 testcases (including fsx, and even large file copy) to fail over time.
584 Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
585 This allows files that differ only in case and improves performance of file
586 creation and file open to such servers. Fix semaphore conflict which causes
587 slow delete of open file to Samba (which unfortunately can cause an oplock
588 break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
592 fixes to cifs_readpages for fsx test case
596 Fix caching data integrity bug when extending file size especially when no
597 oplock on file. Fix spurious logging of valid already parsed mount options
598 that are parsed outside of the cifs vfs such as nosuid.
603 Connect to server when port number override not specified, and tcp port
604 unitialized. Reset search to restart at correct file when kernel routine
605 filldir returns error during large directory searches (readdir).
609 Fix caching problem when files opened by multiple clients in which
610 page cache could contain stale data, and write through did
611 not occur often enough while file was still open when read ahead
612 (read oplock) not allowed. Treat "sep=" when first mount option
613 as an override of comma as the default separator between mount
618 Allow passwords longer than 16 bytes. Allow null password string.
622 Gracefully clean up failed mounts when attempting to mount to servers such as
623 Windows 98 that terminate tcp sessions during protocol negotiation. Handle
624 embedded commas in mount parsing of passwords.
628 Invalidate local inode cached pages on oplock break and when last file
629 instance is closed so that the client does not continue using stale local
630 copy rather than later modified server copy of file. Do not reconnect
631 when server drops the tcp session prematurely before negotiate
632 protocol response. Fix oops in reopen_file when dentry freed. Allow
633 the support for CIFS Unix Extensions to be disabled via proc interface.
637 Fix hang in commit_write during reconnection of open files under heavy load.
638 Fix unload_nls oops in a mount failure path. Serialize writes to same socket
639 which also fixes any possible races when cifs signatures are enabled in SMBs
640 being sent out of signature sequence number order.
644 Fix byte range locking bug (endian problem) causing bad offset and
649 Fix oops (in send_sig) caused by CIFS unmount code trying to
650 wake up the demultiplex thread after it had exited. Do not log
651 error on harmless oplock release of closed handle.
655 Fix unsafe global variable usage and password hash failure on gcc 3.3.1
656 Fix problem reconnecting secondary mounts to same server after session
657 failure. Fix invalid dentry - race in mkdir when directory gets created
658 by another client between the lookup and mkdir.
662 Fix to list processing in reopen_files. Fix reconnection when server hung
663 but tcpip session still alive. Set proper timeout on socket read.
667 Add missing mount options including iocharset. SMP fixes in write and open.
668 Fix errors in reconnecting after TCP session failure. Fix module unloading
669 of default nls codepage
673 Active smb transactions should never go negative (fix double FreeXid). Fix
674 list processing in file routines. Check return code on kmalloc in open.
675 Fix spinlock usage for SMP.
679 Fix oops in reopen_files when invalid dentry. drop dentry on server rename
680 and on revalidate errors. Fix cases where pid is now tgid. Fix return code
681 on create hard link when server does not support them.
685 Fix scheduling while atomic error in getting inode info on newly created file.
686 Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
690 Fix oops on write to dead tcp session. Remove error log write for case when file open
691 O_CREAT but not O_EXCL
695 Fix non-POSIX behavior on rename of open file and delete of open file by taking
696 advantage of trans2 SetFileInfo rename facility if available on target server.
697 Retry on ENOSPC and EAGAIN socket errors.
701 Fix oops on big endian readdir. Set blksize to be even power of two (2**blkbits) to fix
702 allocation size miscalculation. After oplock token lost do not read through
707 Fix oops on empty file readahead. Fix for file size handling for locally cached files.
711 Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
712 during auto reconnection to server after server recovered from failure.
716 Finish support for Linux 2.5 open/create changes, which removes the
717 redundant NTCreate/QPathInfo/close that was sent during file create.
718 Enable oplock by default. Enable packet signing by default (needed to
719 access many recent Windows servers)
723 Fix oops when mounting to long server names caused by inverted parms to kmalloc.
724 Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
725 we will choose a cifs user session (smb uid) that better matches the local
726 uid if a) the mount uid does not match the current uid and b) we have another
727 session to the same server (ip address) for a different mount which
728 matches the current local uid.
732 Add support for mknod of block or character devices. Fix oplock
733 code (distributed caching) to properly send response to oplock
738 Finish up CIFS packet digital signing for the default
739 NTLM security case. This should help Windows 2003
740 network interoperability since it is common for
741 packet signing to be required now. Fix statfs (stat -f)
742 which recently started returning errors due to
743 invalid value (-1 instead of 0) being set in the
744 struct kstatfs f_ffiles field.
748 Fix oops on stopping oplock thread when removing cifs when
753 Fix mount options for ro (readonly), uid, gid and file and directory mode.
757 Fix errors displayed on failed mounts to be more understandable.
758 Fixed various incorrect or misleading smb to posix error code mappings.
762 Fix display of NTFS DFS junctions to display as symlinks.
763 They are the network equivalent. Fix oops in
764 cifs_partialpagewrite caused by missing spinlock protection
765 of openfile linked list. Allow writebehind caching errors to
766 be returned to the application at file close.
770 Clean up options displayed in /proc/mounts by show_options to
771 be more consistent with other filesystems.
775 Fix delete of readonly file to Windows servers. Reflect
776 presence or absence of read only dos attribute in mode
777 bits for servers that do not support CIFS Unix extensions.
778 Fix shortened results on readdir of large directories to
779 servers supporting CIFS Unix extensions (caused by
780 incorrect resume key).
784 Fix truncate bug (set file size) that could cause hangs e.g. running fsx
788 unload nls if mount fails.
792 Add resume key support to search (readdir) code to workaround
793 Windows bug. Add /proc/fs/cifs/LookupCacheEnable which
794 allows disabling caching of attribute information for
799 Add more oplock handling (distributed caching code). Remove
800 dead code. Remove excessive stack space utilization from
805 Fix oops in get dfs referral (triggered when null path sent in to
806 mount). Add support for overriding rsize at mount time.
810 Fix buffer overrun in readdir which caused intermittent kernel oopses.
811 Fix writepage code to release kmap on write data. Allow "-ip=" new
812 mount option to be passed in on parameter distinct from the first part
813 (server name portion of) the UNC name. Allow override of the
814 tcp port of the target server via new mount option "-port="
818 Fix search handle leak on rewind. Fix setuid and gid so that they are
819 reflected in the local inode immediately. Cleanup of whitespace
820 to make 2.4 and 2.5 versions more consistent.
825 Fix signal sending so that captive thread (cifsd) exits on umount
826 (which was causing the warning in kmem_cache_free of the request buffers
827 at rmmod time). This had broken as a sideeffect of the recent global
828 kernel change to daemonize. Fix memory leak in readdir code which
829 showed up in "ls -R" (and applications that did search rewinding).
833 Reconnect tids and fids after session reconnection (still do not
834 reconnect byte range locks though). Fix problem caching
835 lookup information for directory inodes, improving performance,
836 especially in deep directory trees. Fix various build warnings.
840 Finish fixes to commit write for caching/readahead consistency. fsx
841 now works to Samba servers. Fix oops caused when readahead
842 was interrupted by a signal.
846 Fix data corruption (in partial page after truncate) that caused fsx to
847 fail to Windows servers. Cleaned up some extraneous error logging in
848 common error paths. Add generic sendfile support.
852 Fix memory leak in AllocMidQEntry.
853 Finish reconnection logic, so connection with server can be dropped
854 (or server rebooted) and the cifs client will reconnect.
858 Fix temporary socket leak when bad userid or password specified
859 (or other SMBSessSetup failure). Increase maximum buffer size to slightly
860 over 16K to allow negotiation of up to Samba and Windows server default read
861 sizes. Add support for readpages
865 Fix oops when username not passed in on mount. Extensive fixes and improvements
866 to error logging (strip redundant newlines, change debug macros to ensure newline
867 passed in and to be more consistent). Fix writepage wrong file handle problem,
868 a readonly file handle could be incorrectly used to attempt to write out
869 file updates through the page cache to multiply open files. This could cause
870 the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
871 shares to the same Windows server when using different usernames
872 (doing this to Samba servers worked but Windows was rejecting it) - now it is
873 possible to use different userids when connecting to the same server from a
874 Linux client. Fix oops when treeDisconnect called during unmount on
875 previously freed socket.
879 Fix oops in readpages caused by not setting address space operations in inode in
884 Includes support for deleting of open files and renaming over existing files (per POSIX
885 requirement). Add readlink support for Windows junction points (directory symlinks).
889 Changed read and write to go through pagecache. Added additional address space operations.
890 Memory mapped operations now working.
894 Added writepage code for additional memory mapping support. Fixed leak in xids causing
895 the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on
896 every stat call. Additional formatting cleanup.
900 Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version. Formatting cleanup.
904 Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
905 Also included a modified version of his fix to protect global list manipulation of
906 the smb session and tree connection and mid related global variables.
910 Fix problem with captive thread hanging around at unmount time. Adjust to 2.5.42-pre
911 changes to superblock layout. Remove wasteful allocation of smb buffers (now the send
912 buffer is reused for responses). Add more oplock handling. Additional minor cleanup.
916 More stylistic updates to better match kernel style. Add additional statistics
917 for filesystem which can be viewed via /proc/fs/cifs. Add more pieces of NTLMv2
918 and CIFS Packet Signing enablement.
922 Replace call to sleep_on with safer wait_on_event.
923 Make stylistic changes to better match kernel style recommendations.
924 Remove most typedef usage (except for the PDUs themselves).
928 Update mount so the -unc mount option is no longer required (the ip address can be specified
929 in a UNC style device name. Implementation of readpage/writepage started.
933 Fix intermittent problem with incorrect smb header checking on badly
934 fragmented tcp responses
938 Fixes to setting of allocation size and file size.
942 Various 2.5.38 fixes. Now works on 2.5.38
946 Prepare for 2.5 kernel merge. Remove ifdefs.
950 Socket buffer management fixes. Fix dual free.
954 Various big endian fixes for hardlinks and symlinks and also for dfs.
958 Various big endian fixes for servers with Unix extensions such as Samba
962 Various FindNext fixes for incorrect filenames on large directory searches on big endian
963 clients. basic posix file i/o tests now work on big endian machines, not just le
967 SessionSetup and NegotiateProtocol now work from Big Endian machines.
968 Various Big Endian fixes found during testing on the Linux on 390. Various fixes for compatibility with older
969 versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
973 Various minor fixes for Connectathon Posix "basic" file i/o test suite. Directory caching fixed so hardlinked
974 files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
978 Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
979 session advanced session authentication). Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
980 Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
981 (which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
985 Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
986 it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
990 Rewrote much of connection and mount/unmount logic to handle bugs with
991 multiple uses to same share, multiple users to same server etc.
995 Fixed major problem with dentry corruption (missing call to dput)
999 Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
1000 Begin adding oplock support. Multiusermount and oplockEnabled flags added to /proc/fs/cifs
1001 although corresponding function not fully implemented in the vfs yet
1005 Fixed dentry caching bug, misc. cleanup
1009 Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes. Now can build
1010 on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
1011 Support for STATUS codes (newer 32 bit NT error codes) added. DFS support begun to be added.
1015 Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
1016 and tested against Samba 2.2.5
1021 1) Fixed lockrange to be correct (it was one byte too short)
1023 2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly
1024 show range as locked when there is a conflict with an existing lock.
1026 3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
1027 in most cases. Eventually will offer optional ability to query server for the correct perms.
1029 3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded
1030 but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
1033 4) Fixed error logging of valid mount options
1035 5) Removed logging of password field.
1037 6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
1038 and cleaned them up and made them more consistent with other cifs functions.
1040 7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways
1041 (with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1042 nor is the symlink support using the Unix extensions
1044 8) Started adding the readlink and follow_link code
git.samba.org / sfrench / cifs-2.6.git / blob