When CIFS Unix Extensions are negotiated we get the Unix uid and gid
owners of the file from the server (on the Unix Query Path Info
levels), but if the server's uids don't match the client uid's users
were having to disable the Unix Extensions (which turned off features
they still wanted). The changeset patch allows users to override uid
and/or gid for file/directory owner with a default uid and/or gid
specified at mount (as is often done when mounting from Linux cifs
client to Windows server). This changeset also displays the uid
and gid used by default in /proc/mounts (if applicable).
Also cleans up code by adding some of the missing spaces after
"if" keywords per-kernel style guidelines (as suggested by Randy Dunlap
when he reviewed the patch).
Signed-off-by: Steve French <sfrench@us.ibm.com>
IPv6 support was started a few years ago in the cifs client, but lacked a
kernel helper function for parsing the ascii form of the ipv6 address. Now
that that is added (and now IPv6 is the default that some OS use now) it
was fairly easy to finish the cifs ipv6 support. This requires that
CIFS_EXPERIMENTAL be enabled and (at least until the mount.cifs module is
modified to use a new ipv6 friendly call instead of gethostbyname) and the
ipv6 address be passed on the mount as "ip=" mount option.
Thanks
Signed-off-by: Steve French <sfrench@us.ibm.com>
cifsd was the only cifs thread that had not been switched to the newer
kthread interface
Signed-off-by: Igor Mammedov <niallain at gmail.com>
Signed-off-by: Wilhelm Meier <wilhelm.meier@fh-kl.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
After temporary server or network failure and reconneciton, we were not
resending the unix capabilities via SetFSInfo - which confused Samba posix
byte range locking code.
Discovered by jra
Signed-off-by: Steve French <sfrench@us.ibm.com>
Move process freezing functions from include/linux/sched.h to freezer.h, so
that modifications to the freezer or the kernel configuration don't require
recompiling just about everything.
[akpm@osdl.org: fix ueagle driver]
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some servers are configured to only allow null user mounts for
guest access. Allow nul user (anonymous) mounts e.g.
mount -t cifs //server/share /mnt -o username=
Signed-off-by: Steve French <sfrench@us.ibm.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (27 commits)
[CIFS] Missing flags2 for DFS
[CIFS] Workaround incomplete byte length returned by some
[CIFS] cifs Kconfig: don't select CONNECTOR
[CIFS] Level 1 QPathInfo needed for proper OS2 support
[CIFS] fix typo in previous patch
[CIFS] Fix old DOS time conversion to handle timezone
[CIFS] Do not need to adjust for Jan/Feb for leap day
[CIFS] Fix leaps year calculation for years after 2100
[CIFS] readdir (ffirst) enablement of accurate timestamps from legacy servers
[CIFS] Fix compiler warning with previous patch
[CIFS] Fix typo
[CIFS] Allow for 15 minute TZs (e.g. Nepal) and be more explicit about
[CIFS] Fix readdir of large directories for backlevel servers
[CIFS] Allow LANMAN21 support even in both POSIX non-POSIX path
[CIFS] Make use of newer QFSInfo dependent on capability bit instead of
[CIFS] Do not send newer QFSInfo to legacy servers which can not support it
[CIFS] Fix typo in name of new cifs_show_stats
[CIFS] Rename server time zone field
[CIFS] Handle legacy servers which return undefined time zone
[CIFS] CIFS support for /proc/<pid>/mountstats part 1
...
Manual conflict resolution in fs/cifs/connect.c
Replace references to system_utsname to the per-process uts namespace
where appropriate. This includes things like uname.
Changes: Per Eric Biederman's comments, use the per-process uts namespace
for ELF_PLATFORM, sunrpc, and parts of net/ipv4/ipconfig.c
[jdike@addtoit.com: UML fix]
[clg@fr.ibm.com: cleanup]
[akpm@osdl.org: build fix]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Andrey Savochkin <saw@sw.ru>
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix dialect negotiation to save off when we have negotiated lanman.
This allows us to avoid sending some somewhat newer requests that the server
can not handle and go directly to the older version (infolevel) of the same
call. Make sure we try to negotiate a level which allows us to get the
server OS (which we check so we can detect Win9x vs. other legacy servers
and eventually work around the Win9x DOS time bug (they reverse date/time
fields).
Signed-off-by: Steve French <sfrench@us.ibm.com>
Server time zone is not really a time zone, rather a time adjustement
in seconds.
CC: Guenter Kukkukk <linux@kukkukk.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Most cases of the ones found by Shaggy by
"make namespacecheck"
could be removed or made static
Ack: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Make cifsd allow us to suspend if it has lost the connection with a server
Ref: http://bugzilla.kernel.org/show_bug.cgi?id=6811
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Steve French <sfrench@us.ibm.com>
(cherry picked from 27bd6cd87b0ada66515ad49bc346d77d1e9d3e05 commit)
request and do not time out slow requests to a server that is still responding
well to other threads
Suggested by jra of Samba team
Signed-off-by: Steve French <sfrench@us.ibm.com>
(cherry picked from 89b57148115479eef074b8d3f86c4c86c96ac969 commit)
in directory
Also includes first part of fix to compensate for servers which forget
to return . and .. as well as updates to changelog and cifs readme.
Signed-off-by: Steve French <sfrench@us.ibm.com>
- slow down negprot 1ms during mount when RFC1001 over port 139
to give buggy servers time to clear sess_init
- remap some plausible but incorrect SMB return codes to the
right ones in truncate and hardlink paths
Signed-off-by: Steve French <sfrench@us.ibm.com>
Thanks to Adrian Bunk for debugging the problem and to Shaggy for
helping find the solution.
Also added a fix for 64K pages we found in loosely-related testing
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The cifs session setup code has three cases, and a fourth for backlevel
LANMAN2 style session setup needed to be added. This new session setup
implmentation will eventually replace the other three and should be
easier to read while fixing a few minor problems (not setting
the LARGE READ/WRITEX flags when NTLMSSP was negotiated for example) and
adding support for NTLMv2 (which will be added with the next patch. In the
meantime, this code is marked in an CONFIG_CIFS_EXPERIMENTAL block and will
not be turned on by default until it is tested against more server types.
Signed-off-by: Steve French <sfrench@us.ibm.com>
typically - header + 13 pages).
Forgetting to set wsize on the mount command costs more than 10% on large
write (can be much more) so this makes a saner default. We still shrink
this default smaller if server can not support it.
Signed-off-by: Steve French <sfrench@us.ibm.com>
Fix Samba bugzilla bug 3301
In share mode encrypted password must be sent on tree connection (in our
case only the NTLM password is sent, not the older LANMAN one).
Signed-off-by: Steve French <sfrench@us.ibm.com>
Following Shaggy's suggestion, do a better job on the unicode string
handling routines in cifs in specifying that the wchar_t are really
little endian widechars (__le16).
Signed-off-by: Steve French <sfrench@us.ibm.com>
This is the fs/ part of the big kfree cleanup patch.
Remove pointless checks for NULL prior to calling kfree() in fs/.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
New cifs_writepages routine was not updated bytes written in cifs stats.
Also added ability to clear /proc/fs/cifs/Stats by writing (0 or 1) to it.
Signed-off-by: Steve French <sfrench@us.ibm.com>
This allows cifs_writepages to send data in larger chunks from the page
cache, without requiring larger memory allocations in other cases.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
eliminate the double copy, and improve cifs write performance and
help the server by upping the typical write size from 4K to 16K
(or even larger if wsize set explicitly) for servers which support this.
Part 1 of 2
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
cifsd had been preventing software suspend from completing.
Signed-off-by: pavel@suse.de
Signed-off-by: Steve French <sfrench@us.ibm.com> lightly modified
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Most important of these fixes mapchars on bigendian and a few statfs fields
Signed-off-by: Shaggy (shaggy@austin.ibm.com)
Signed-off-by: Steve French (sfrench@us.ibm.com)
Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size. Also use helper
functions to convert between human time units and jiffies rather than constant
HZ division to avoid rounding errors.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch converts kcalloc(1, ...) calls to use the new kzalloc() function.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
allows specifying an RFC1001 target "called" name (netbios name of the
server, which can now be pecified as mount option "servernetbiosname"
but will eventually be passed in automatically on retry of host down
error messages caused when server refuses to handle default server
name and can not handle port 445). This is an important step, but
additional testing and fixup is needed to add remaining function needed
for these.
Signed-off-by: Steve French (sfrench@us.ibm.com)
over the wire (to help the case when applications break with cifs mandatory
lock behavior. Add part one of mount option for requesting case
insensitive path name matching.
Signed-off-by: Steve French (sfrench@us.ibm.com)
This should help the case of creating fifos and other special files to
servers which do not support the Unix extensions.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Thanks to Martin Koeppe for his suggestions and good analysis
.. since it can be due to pending kill.
Update readme information to better describe cifs umount
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
if cifsd thread is no longer running to demultixplex responses.
Do not send FindClose request when FindFirst failed without reaching end
of search.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
unless response is larger than 256 bytes. This cuts more than 1/3 of
the large memory allocations that cifs does and should be a huge help to
memory pressure under stress.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
For handling seven special characters that shells use for filenames.
This first parts implements conversions from Unicode.
Signed-off-by: Steve French
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
