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As per MS-SMB2 and MS-FSA and our SMB_VFS_STRICT_LOCK implementation,
we're merely testing for locks, not setting any.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12887
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jul 11 03:37:44 CEST 2017 on sn-devel-144
It's just a noop, so let's remove it. SMB_VFS_STRICT_LOCK doesn't set
logs, it just checks for the presence of incompatible locks.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12887
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is currently marked 'skip', which means it isn't stored in the
db, but printed out in ndr dump. However, this pointer can be invalid
if the lease_idx is set to 0xFFFFFFFF (invalid).
This is fixed up inside parse_share_modes(), but not until after
ndr_pull_share_mode_data() is called. If lease_idx == 0xFFFFFFFF
then ndr_print_share_mode_lease() prints an invalid value and
crashes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12793
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu May 18 03:01:40 CEST 2017 on sn-devel-144
Add some helper functions that will be used to update a bunch of checks
for exclusive oplocks to the lease area.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12766
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The boolean out parameter "queued" tells the caller whether the
async request is blocked in a full send queue:
false := request is dispatched
true := send queue is full, request waiting to be dispatched
This is useful in a clustered Samba environment where the async dbwrap
request is sent over a socket to the local ctdbd.
If the send queue is full and the caller was issuing multiple async
dbwrap requests in a loop, the caller knows it's probably time to stop
sending requests for now and try again later.
This will be used in subsequent commits in
smbd_smb2_query_directory_send() when implementing async write time
updates. Directories may contain umpteen files so we send many requests
to ctdb without going through tevent and reading the responses which
has the potential to deadlock.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12628
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed Mar 15 20:04:32 CET 2017 on sn-devel-144
dbwrap_parse_record() can return ctdb tombstone records from the lctdb,
ignore them.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12005
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Not freeing up(and reparenting to NULL context) ndr buffer
used for TDB updates resulting in huge memory leak when there
in high volume of opens and closes happening on same object.
Free the buffer before reparenting its parent to NULL context.
https://bugzilla.samba.org/show_bug.cgi?id=11934
Signed-off-by: Hemanth Thummala <hemanth.thummala@nutanix.com>
Signed-off-by: Saji VR <saji.vr@nutanix.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Fri May 27 18:43:31 CEST 2016 on sn-devel-144
Only in the default VFS. Gpfs, Ceph, Gluster and other modern
backend VFS filesystems might want to do the same.
Allow tuneable "smbd:force process locks = true" to turn
off OFD locks if in use and the kernel doesn't support them.
Display debug message showing admins what to do in this case.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Jeff Layton <jlayton@samba.org>
Not yet used. We will set this if we translate a process-associated
lock operation to a open file description lock operation.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Jeff Layton <jlayton@samba.org>
This means locks are associated with the SMB handle
they were created on, not the inode. In all other ways
they behave like UNIX extensions fcntl (process-associated)
locks. Torture test to follow.
When a handle is closed all locks attached to that handle
are closed, not all locks on the underlying inode. In
this respect they now behave like Windows locks.
The key to this in the UNIX extensions locking codepath is modifying
the reference count only when a new locking context is seen
on any lock request, and decrementing the reference count
when the last instance of a locking context is seen on any
unlock request. For SMB2+ the persistent part of a file handle
is used as the locking context so this behavior becomes
natural.
This is a behavior change but after consultation with
Jeff Layton and Steve French the only client that implements
UNIX extensions POSIX locks - the cifsfs client - already
expects these locks to behave like open file description
(ofd) locks. With our previous behavior Linux ofd-locks
fail against smbd.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Jeff Layton <jlayton@samba.org>
We will need this to implement open file description record locks.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Jeff Layton <jlayton@samba.org>
We will be using this to also ref count a posix lock applied
to a file handle when changing to open file description lock
semantics.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Jeff Layton <jlayton@samba.org>
This is in preperation of a more fine grained control of POSIX behaviour
in the SMB and VFS layers.
Inititally we use an uint8_t for the flags bitmap and add a define
posix_flags as posix_open in order to avoid breaking the VFS ABI.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11065
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
mostly "Conditional jump or move depends on uninitialised value" &
"Use of uninitialised value of size 8" errors, suspect this is
related to compiler padding for the struct
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Nov 6 00:16:53 CET 2015 on sn-devel-104
Initialize lease pointer to point to the share_mode_data leases array
entry at index lease_idx.
This fixes a bug in smbstatus where the lease info is not printed.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11549
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Oct 13 01:14:09 CEST 2015 on sn-devel-104
Add stream name argument to share_entry_forall machinery so smbstatus
can print the stream name of a file.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11550
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Replace all callers with direct calls to server_id_str_buf without
talloc_tos()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We now have reset_delete_on_close_lck, this was called with "true"
everywhere now.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Boolean flags passed down make things more complex than necessary...
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Based on an idea by Volker to optimize cpu usage when
parsing struct share_mode_data entries.
Add a 64-bit sequence number to the share mode entry,
and after the entry is stored back in the db, cache
the in-memory version using talloc reparenting into the
memcache. The memcache key used is the same struct file_id
used as the key into the locking db.
On read, check if the locking db version sequence number
matches the in-memory cache, and if so reparent the
memcache version back onto the required memory context.
Saves all the ndr decoding when multiple accesses to the
same lock entry happen in succession.
Design also improved by Metze and Ira.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Apr 17 22:38:34 CEST 2015 on sn-devel-104
C does not allow empty initializer lists. Although gcc accepts that, the
SunOS compiler fails in this case with an error.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11153
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Christof Schmitt <cs@samba.org>
Autobuild-Date(master): Thu Mar 12 02:49:36 CET 2015 on sn-devel-104
Also check for allocation failures.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Jan 12 19:22:31 CET 2015 on sn-devel-104
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Sun Jan 11 20:34:56 CET 2015 on sn-devel-104
If dbwrap_fetch_locked failed, we did a TALLOC_FREE(value). Fix this with a
talloc hierarchy.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
In a cluster this can be called with an empty record, while
brl_parse_data() relies on an initialized structure.
This is a regression in commit 837e29035c.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10911
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Will enable us to solve the dynamic share path problem
with leases on [homes].
We're also able to give the correct error codes when a
lease key is re-used with a different file name.
Pair-Programmed-With: Jeremy Allison <jra@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
