Commit Graph

412 Commits

Author SHA1 Message Date
Jeff Layton d32c4f2626 CIFS: ignore mode change if it's just for clearing setuid/setgid bits
If the ATTR_KILL_S*ID bits are set then any mode change is only for clearing
the setuid/setgid bits.  For CIFS, skip the mode change and let the server
handle it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: Steven French <sfrench@us.ibm.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 14:37:22 -07:00
Christoph Lameter 4ba9b9d0ba Slab API: remove useless ctor parameter and reorder parameters
Slab constructors currently have a flags parameter that is never used.  And
the order of the arguments is opposite to other slab functions.  The object
pointer is placed before the kmem_cache pointer.

Convert

        ctor(void *object, struct kmem_cache *s, unsigned long flags)

to

        ctor(struct kmem_cache *s, void *object)

throughout the kernel

[akpm@linux-foundation.org: coupla fixes]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:42:45 -07:00
Cyrill Gorcunov 5e6e623275 [CIFS] Check return code on failed alloc
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-08-18 00:15:20 +00:00
Steve French a403a0a370 [CIFS] Fix hang in find_writable_file
Caused by unneeded reopen during reconnect while spinlock held.

Fixes kernel bugzilla bug #7903

Thanks to Lin Feng Shen for testing this, and Amit Arora for
some nice problem determination to narrow this down.

Acked-by: Dave Kleikamp <shaggy@us.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-26 15:54:16 +00:00
Paul Mundt 20c2df83d2 mm: Remove slab destructors from kmem_cache_create().
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20 10:11:58 +09:00
Steve French 1ff8392c32 Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	fs/cifs/export.c
2007-07-19 00:38:57 +00:00
Steve French 70b315b0dd [CIFS] merge conflict in fs/cifs/export.c
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-19 00:32:25 +00:00
Steve French c18c842b1f [CIFS] Allow disabling CIFS Unix Extensions as mount option
Previously the only way to do this was to umount all mounts to that server,
turn off a proc setting (/proc/fs/cifs/LinuxExtensionsEnabled).

Fixes Samba bugzilla bug number: 4582 (and also 2008)

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-18 23:21:09 +00:00
Steve French 63135e088a [CIFS] More whitespace/formatting fixes (noticed by checkpatch)
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-17 17:34:02 +00:00
Christoph Hellwig a569425512 knfsd: exportfs: add exportfs.h header
currently the export_operation structure and helpers related to it are in
fs.h.  fs.h is already far too large and there are very few places needing the
export bits, so split them off into a separate header.

[akpm@linux-foundation.org: fix cifs build]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Rafael J. Wysocki 8314418629 Freezer: make kernel threads nonfreezable by default
Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves.  This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.

It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.

The patch causes all kernel threads to be nonfreezable by default (ie.  to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear.  Additionally, it updates documentation to
describe the freezing of tasks more accurately.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:02 -07:00
Steve French 7e42ca886b [CIFS] Typo in previous patch
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-16 17:40:02 +00:00
Eric 6fa20d4fb5 [CIFS] zero_user_page() conversions
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-16 16:23:19 +00:00
Nate 8803863a90 [CIFS] use simple_prepare_write to zero page data
It's common for file systems to need to zero data on either side of a
write, if a page is not Uptodate during prepare_write.  It just so happens
that simple_prepare_write() in libfs.c does exactly that, so we can avoid
duplication and just call that function to zero page data.

Signed-off-by: Nate Diller <nate.diller@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-16 15:45:13 +00:00
Steve French 4a379e6657 [CIFS] Fix build break - inet.h not included when experimental ifdef off
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-15 21:58:28 +00:00
Steve French 2d785a50a8 [CIFS] Add support for new POSIX unlink
In the cleanup phase of the dbench test, we were noticing sharing
violation followed by failed directory removals when dbench
did not close the test files before the cleanup phase started.
Using the new POSIX unlink, which Samba has supported for a few
months, avoids this.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-15 01:48:57 +00:00
Steve French 50c2f75388 [CIFS] whitespace/formatting fixes
This should be the last big batch of whitespace/formatting fixes.
checkpatch warnings for the cifs directory are down about 90% and
many of the remaining ones are harder to remove or make the code
harder to read.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-13 00:33:32 +00:00
Steve French 7521a3c566 [CIFS] Fix oops in cifs_create when nfsd server exports cifs mount
nfsd is passing null nameidata (probably the only one doing that)
on call to create - cifs was missing one check for this.

Note that running nfsd over a cifs mount requires specifying fsid on
the nfs exports entry and requires mounting cifs with serverino mount
option.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-11 18:30:34 +00:00
Jens Axboe 5ffc4ef45b sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
They can use generic_file_splice_read() instead. Since sys_sendfile() now
prefers that, there should be no change in behaviour.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10 08:04:13 +02:00
Steve French fb8c4b14d9 [CIFS] whitespace cleanup
More than halfway there

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-10 01:16:18 +00:00
Steve French b609f06ac4 [CIFS] Fix packet signatures for NTLMv2 case
Signed-off-by: Yehuda Sadeh Weinraub <Yehuda.Sadeh@expand.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-09 07:55:14 +00:00
Steve French 3870253efb [CIFS] more whitespace fixes
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-08 15:40:40 +00:00
Steve French 790fe579f5 [CIFS] more whitespace cleanup
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-07 19:25:05 +00:00
Steve French 6dc0f87e35 [CIFS] whitespace cleanup
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-06 23:13:06 +00:00
Steve French 79a58d1f60 [CIFS] whitespace cleanup
checkpatch.pl redux

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-06 22:44:50 +00:00
Jeff d20acd09e3 [CIFS] ipv6 support no longer experimental
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-06 21:13:08 +00:00
Jeff 38c10a1ddb [CIFS] Mount should fail if server signing off but client mount option requires it
Currently, if mount with a signing-enabled sec= option (e.g.
sec=ntlmi), the kernel does a warning printk if the server doesn't
support signing, and then proceeds without signatures.

This is probably OK for people that think to look at the ring buffer,
but seems wrong to me. If someone explicitly requests signing, we
should error out if that request can't be satisfied. They can then
reattempt the mount without signing if that's ok.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-06 21:10:07 +00:00
Steve French d38d8c74c7 [CIFS] whitespace fixes
This changeset brought to you ... by patchcheck.pl

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-28 19:44:13 +00:00
Steve French 762e5ab77c [CIFS] Fix sign mount option and sign proc config setting
We were checking the wrong (old) global variable to determine
whether to override server and force signing on the SMB
connection.

Acked-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-28 18:41:42 +00:00
Steve French 467a8f8d48 [CIFS] whitespace cleanup
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-27 22:41:32 +00:00
Jeff 5d9c720678 [CIFS] Do not allow signals in cifs_demultiplex_thread
Switch from send_sig to force_sig and do not allow signal for this
background thread (the signal is needed to wakeup the thread when
blocked in the network stack).

Signed-off-by: Jeff Layton <jlayton@readhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-25 22:16:35 +00:00
Steve French ffdd6e4d16 [CIFS] fix whitespace
More whitespace problems found by checkpatch

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-24 21:15:44 +00:00
Steve French 75865f8cc8 [CIFS] Add in some missing flags and cifs README and TODO corrections
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-24 18:30:48 +00:00
Steve French 3ce53fc4c5 [CIFS] CIFS should honour umask
This patch makes CIFS honour a process' umask like other filesystems.
Of course the server is still free to munge the permissions if it wants
to; but the client will send the "right" permissions to begin with.

A few caveats:

1) It only applies to filesystems that have CAP_UNIX (aka support unix
extensions)
2) It applies the correct mode to the follow up CIFSSMBUnixSetPerms()
after remote creation

When mode to CIFS/NTFS ACL mapping is complete we can do the
same thing for that case for servers which do not
support the Unix Extensions.

Signed-off-by: Matt Keenen <matt@opcode-solutions.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-08 14:55:14 +00:00
Yehuda Sadeh Weinraub 100c1ddc98 [CIFS] Missing flag on negprot needed for some servers to force packet signing
A related signature issue that I came across.
There's a bug in win2k that when NT error codes are not negotiated, the
server doesn't response that signatures are mandatory. Since there's
(currently) no way turn on signatures in such case, I had to force NT
error codes, so that this bug will not occur

Signed-off-by: Yehuda Sadeh Weinraub <Yehuda.Sadeh@expand.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-05 21:31:16 +00:00
Steve French 221601c3d1 [CIFS] whitespace cleanup part 2
Various coding style problems found by running the new
   checkpatch.pl script against fs/cifs.  3 more files
   fixed up.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-05 20:35:06 +00:00
Steve French 5fdae1f681 [CIFS] whitespace cleanup
Various coding style problems found by running fs/cifs
against the new checkpatch.pl script.  Since there
were too many to fit in one patch.  Updated the first
four files.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-05 18:30:44 +00:00
Akinobu Mita e6985c7f68 [CIFS] fix mempool destroy done in wrong order in cifs error path
Slab cache used as memory pool can not be destroyed before the memory
pool destruction. Because the memory pool still holds some objects and
kmem_cache_destroy() says "Can't free all objects".

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-04 16:14:59 +00:00
Steve French f7f7c31c98 [CIFS] typo in previous patch
(also fixed missing space after if)

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-05-24 02:29:51 +00:00
Steve French 28356a1679 [CIFS] Fix oops on failed cifs mount (in kthread_stop)
If the cifs demultiplex thread wakes up and exits
(zeroing server->tsk) before kthread_stop is called, the
cifs_mount code could pass a null pointer to kthread_stop

Thanks to akpm, Dave Young and Shaggy for suggesting
earlier versions of this patch.

CC: akpm@linux-foundatior.org
Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-05-23 14:45:36 +00:00
Christoph Lameter a35afb830f Remove SLAB_CTOR_CONSTRUCTOR
SLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Steven French <sfrench@us.ibm.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@ucw.cz>
Cc: David Chinner <dgc@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-17 05:23:04 -07:00
Randy Dunlap e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Christoph Lameter 50953fe9e0 slab allocators: Remove SLAB_DEBUG_INITIAL flag
I have never seen a use of SLAB_DEBUG_INITIAL.  It is only supported by
SLAB.

I think its purpose was to have a callback after an object has been freed
to verify that the state is the constructor state again?  The callback is
performed before each freeing of an object.

I would think that it is much easier to check the object state manually
before the free.  That also places the check near the code object
manipulation of the object.

Also the SLAB_DEBUG_INITIAL callback is only performed if the kernel was
compiled with SLAB debugging on.  If there would be code in a constructor
handling SLAB_DEBUG_INITIAL then it would have to be conditional on
SLAB_DEBUG otherwise it would just be dead code.  But there is no such code
in the kernel.  I think SLUB_DEBUG_INITIAL is too problematic to make real
use of, difficult to understand and there are easier ways to accomplish the
same effect (i.e.  add debug code before kfree).

There is a related flag SLAB_CTOR_VERIFY that is frequently checked to be
clear in fs inode caches.  Remove the pointless checks (they would even be
pointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors.

This is the last slab flag that SLUB did not support.  Remove the check for
unimplemented flags from SLUB.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:57 -07:00
Steve French 0ec54aa8af [CIFS] Fix typo in cifs readme from previous commit
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-05-05 22:08:06 +00:00
Jeff Layton 8426c39c12 [CIFS] Make sec=none force an anonymous mount
We had a customer report that attempting to make CIFS mount with a null
username (i.e. doing an anonymous mount) doesn't work. Looking through the
code, it looks like CIFS expects a NULL username from userspace in order
to trigger an anonymous mount. The mount.cifs code doesn't seem to ever
pass a null username to the kernel, however.

It looks also like the kernel can take a sec=none option, but it only seems
to look at it if the username is already NULL. This seems redundant and
effectively makes sec=none useless.

The following patch makes sec=none force an anonymous mount.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-05-05 03:27:49 +00:00
Roland Dreier 796e5661f6 [CIFS] Change semaphore to mutex for cifs lock_sem
Originally at http://lkml.org/lkml/2006/9/2/86

The recent change to "allow Windows blocking locks to be cancelled via a
CANCEL_LOCK call" introduced a new semaphore in struct cifsFileInfo,
lock_sem.  However, semaphores used as mutexes are deprecated these days,
and there's no reason to add a new one to the kernel.  Therefore, convert
lock_sem to a struct mutex (and also fix one indentation glitch on one of
the lines changed anyway).

Signed-off-by: Roland Dreier <roland@digitalvampire.org>
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-05-03 04:33:45 +00:00
Steve French 0b2365f826 [CIFS] Fix oops in reset_cifs_unix_caps on reconnect
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-05-03 04:30:13 +00:00
Steve French 4523cc3044 [CIFS] UID/GID override on CIFS mounts to Samba
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>
2007-04-30 20:13:06 +00:00
Steve French 984acfe1cf [CIFS] prefixpath mounts to servers supporting posix paths used wrong slash
Acked-by: Alexander Bokovoy <abokovoy@ru.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-04-26 16:42:50 +00:00
Steve French deb0420c6f [CIFS] Update cifs version to 1.49
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-04-26 14:35:54 +00:00