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This isn't exactly rocket science we would need to keep around
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Move allocation of smbXsrv_open_global0 out of
smbXsrv_open_global_allocate()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This moves the bit-fiddling right next to the check we do,
"global_zeros" was only used for this one purpose and its assignment
was a few lines away.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Volatile file handle IDs are purely per-process, in fact we used a
dbwrap_rbt for this. To get a unique ID we however have the
specialized idtree data structure, we don't need to repeat the
allocation algorithm that already exists there.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jan 10 01:23:38 UTC 2023 on sn-devel-184
This was only referenced in smbXsrv_open_close, but it was never
assigned anything but NULL.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This should really not happen, crashing would be the right response.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This changes the talloc hierarchy for a few callers, but as
talloc_tos() was initially designed exactly for this purpose (printing
SIDs in DEBUG), it should be okay.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
It's good to have a consistent set of hash_size/flags for all aspects of
an open file handle. Currently we're using 4 databases:
smbXsrv_open_global.tdb, leases.tdb, locking.tdb and brlock.tdb.
While at it also crank up the hashsize if the smbXsrv_tcon and smbXsrv_session
TDBs. The default TDB hash size is insanely small and disk space is cheap these
days, by going with the much larger hash size we get O(1) lookup instead of O(n)
for moderate to large loads with a few thousand objects.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Dec 19 16:40:15 UTC 2022 on sn-devel-184
This avoids using fcntl() locks for dbwrap_delete()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15125
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
I saw systems with locking.tdb records being part of:
ctdb catdb smbXsrv_tcon_global.tdb
It's yet unknown how that happened, but we should not panic in srvsvc_*
calls because the info0 pointer was NULL.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14752
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Jul 6 11:08:43 UTC 2021 on sn-devel-184
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14699
../../source4/dsdb/common/util_links.c: In function ‘ndr_guid_compare’:
../../source4/dsdb/common/util_links.c:38:29: error: ‘v1_data’ may be used uninitialized [-Werror=maybe-uninitialized]
38 | struct ldb_val v1 = data_blob_const(v1_data, sizeof(v1_data));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/dsdb/common/util_links.c:22:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/dsdb/common/util_links.c:37:17: note: ‘v1_data’ declared here
37 | uint8_t v1_data[16];
| ^~~~~~~
cc1: all warnings being treated as errors
[1729/3991] Compiling source3/smbd/smbXsrv_open.c
../../libcli/auth/smbencrypt.c: In function ‘decode_wkssvc_join_password_buffer’:
../../libcli/auth/smbencrypt.c:1045:32: error: ‘_confounder’ may be used uninitialized [-Werror=maybe-uninitialized]
1045 | DATA_BLOB confounder = data_blob_const(_confounder, 8);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../libcli/auth/smbencrypt.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../libcli/auth/smbencrypt.c:1044:17: note: ‘_confounder’ declared here
1044 | uint8_t _confounder[8];
| ^~~~~~~~~~~
cc1: all warnings being treated as errors
[2624/3991] Compiling source4/torture/rpc/samr.c
../../source3/rpc_client/cli_samr.c: In function ‘dcerpc_samr_chgpasswd_user2’:
../../source3/rpc_client/cli_samr.c:158:33: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
158 | DATA_BLOB session_key = data_blob_const(old_nt_hash, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source3/../lib/util/samba_util.h:48,
from ../../source3/include/includes.h:256,
from ../../source3/rpc_client/cli_samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source3/rpc_client/cli_samr.c:152:17: note: ‘old_nt_hash’ declared here
152 | uint8_t old_nt_hash[16];
| ^~~~~~~~~~~
../../source3/rpc_client/cli_samr.c: In function ‘dcerpc_samr_chgpasswd_user3’:
../../source3/rpc_client/cli_samr.c:365:33: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
365 | DATA_BLOB session_key = data_blob_const(old_nt_hash, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source3/../lib/util/samba_util.h:48,
from ../../source3/include/includes.h:256,
from ../../source3/rpc_client/cli_samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source3/rpc_client/cli_samr.c:358:17: note: ‘old_nt_hash’ declared here
358 | uint8_t old_nt_hash[16];
| ^~~~~~~~~~~
cc1: all warnings being treated as errors
[3399/3991] Compiling source3/rpcclient/cmd_spotlight.c
../../source3/smbd/smbXsrv_open.c: In function ‘smbXsrv_open_set_replay_cache’:
../../source3/smbd/smbXsrv_open.c:936:26: error: ‘data’ may be used uninitialized [-Werror=maybe-uninitialized]
936 | DATA_BLOB blob = data_blob_const(data, ARRAY_SIZE(data));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source3/../lib/util/samba_util.h:48,
from ../../source3/include/includes.h:256,
from ../../source3/smbd/smbXsrv_open.c:21:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source3/smbd/smbXsrv_open.c:935:17: note: ‘data’ declared here
935 | uint8_t data[SMBXSRV_OPEN_REPLAY_CACHE_FIXED_SIZE];
| ^~~~
cc1: all warnings being treated as errors
../../source3/rpcclient/cmd_spotlight.c: In function ‘cmd_mdssvc_fetch_properties’:
../../source3/rpcclient/cmd_spotlight.c:60:18: error: ‘share_path’ may be used uninitialized [-Werror=maybe-uninitialized]
60 | status = dcerpc_mdssvc_open(b, mem_ctx,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
61 | &device_id,
| ~~~~~~~~~~~
62 | &unkn1,
| ~~~~~~~
63 | &unkn2,
| ~~~~~~~
64 | argv[2],
| ~~~~~~~~
65 | argv[1],
| ~~~~~~~~
66 | share_path,
| ~~~~~~~~~~~
67 | &share_handle);
| ~~~~~~~~~~~~~~
In file included from ../../source3/rpcclient/cmd_spotlight.c:24:
source3/../librpc/gen_ndr/ndr_mdssvc_c.h:26:10: note: by argument 8 of type ‘const char *’ to ‘dcerpc_mdssvc_open’ declared here
26 | NTSTATUS dcerpc_mdssvc_open(struct dcerpc_binding_handle *h,
| ^~~~~~~~~~~~~~~~~~
../../source3/rpcclient/cmd_spotlight.c:40:14: note: ‘share_path’ declared here
40 | char share_path[1025];
| ^~~~~~~~~~
cc1: all warnings being treated as errors
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordUser2’:
../../source4/torture/rpc/samr.c:2266:19: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2266 | = data_blob_const(old_nt_hash, sizeof(old_nt_hash));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2263:17: note: ‘old_nt_hash’ declared here
2263 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordUser2_ntstatus’:
../../source4/torture/rpc/samr.c:2371:19: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2371 | = data_blob_const(old_nt_hash, sizeof(old_nt_hash));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2368:17: note: ‘old_nt_hash’ declared here
2368 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordUser3’:
../../source4/torture/rpc/samr.c:2478:38: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2478 | DATA_BLOB old_nt_hash_blob = data_blob_const(old_nt_hash, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2473:17: note: ‘old_nt_hash’ declared here
2473 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordRandomBytes’:
../../source4/torture/rpc/samr.c:2794:19: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2794 | = data_blob_const(old_nt_hash,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
2795 | sizeof(old_nt_hash));
| ~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2792:17: note: ‘old_nt_hash’ declared here
2792 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
cc1: all warnings being treated as errors
Guenther
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Before processing an open we need to reserve the replay cache entry
in order to signal that we're still in progress.
If a reserved record is already present we need to return
FILE_NOT_AVAILABLE in order to let the client retry again.
[MS-SMB2] contains this:
<152> Section 3.2.5.1: For the following error codes, Windows-based clients
will retry the operation up to three times and then retry the operation every 5
seconds until the count of milliseconds specified by Open.ResilientTimeout is
exceeded:
- STATUS_SERVER_UNAVAILABLE
- STATUS_FILE_NOT_AVAILABLE
- STATUS_SHARE_UNAVAILABLE
This works fine for windows clients, but current windows servers seems to
return ACCESS_DENIED instead of FILE_NOT_AVAILABLE.
A Windows server doesn't do any replay detection on pending opens,
which wait for a HANDLE lease to be broken (because of a
SHARING_VIOLATION), at all.
As this is not really documented for the server part of the current [MS-SMB2],
I found the key hint in "SMB 2.2: Bigger. Faster. Scalier - (Parts 1 and 2)"
on page 24. There's a picture showing that a replay gets FILE_NOT_AVAILABLE
as long as the original request is still in progress. See:
https://www.snia.org/educational-library/smb-22-bigger-faster-scalier-parts-1-and-2-2011
A Windows client is unhappy with the current windows server behavior if it
such a situation happens. There's also a very strange interaction with oplock
where the replay gets SHARING_VIOLATION after 35 seconds because it conflicts with
the original open.
I think it's good to follow the intial design from the 2011 presentation and
make the clients happy by using FILE_NOT_AVAILABLE (and differ from Windows).
I'll report that to dochelp@microsoft.com in order to get this hopefully fixed in
their server too).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14449
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is way to mark an entry as invalid (.valid = false).
Pair-Programmed-With: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Fix a confusing API: Many places TALLOC_FREE the path where it's not
clear you have to do it.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This is the same pointer and we don't have a lot of callers,
so we can just use one pointer.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Wed Mar 9 21:51:52 CET 2016 on sn-devel-144
A function to find an open from the replay cache,
based on the create_guid handed in.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This caches a map create_guid -> file_id, so that
a replayed create can find the already created
open again.
This is automatically deleted once the first use
of the file handle is happening (triggered by
the lookup for the file-id).
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
smbXsrv_open_local_fetch_locked()
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Feb 26 22:35:28 CET 2016 on sn-devel-144
These should be per client (based on the SMB >= 2.1 client_guid),
this is a preparation for multi-channel support.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
At one point it was pretty difficult to track a failure. Add more DEBUG
to avoid gdb
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Aug 11 23:32:45 CEST 2014 on sn-devel-104
Coverity fix. Initialize status to NT_STATUS_OK. Otherwise, there are
code paths that would cause the smbXsrv_open_cleanup() function to
return an uninitialized value.
Cov: 1168008
Signed-off-by: Christopher R. Hertel (crh) <crh@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Wed Feb 12 23:57:05 CET 2014 on sn-devel-104
This is in preparation to support handing flags to backends,
in particular activating read only record support for ctdb
databases. For a start, this does nothing but adding the
parameter, and all databases use DBWRAP_FLAG_NONE.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This should avoid scary ndr_pull errors, if there's
a cleanup race.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Jan 30 18:49:37 CET 2014 on sn-devel-104
This is what gets created in log.smbd: DEBUGLVL generates an empty
header line, CHECK_DEBUGLVL avoids this.
[2014/01/10 12:58:24.971658, 10, pid=2329, effective(1001, 1001), real(0, 0)] ../source3/smbd/smbXsrv_open.c:696(smbXsrv_open_global_store)
[2014/01/10 12:58:24.971690, 10, pid=2329, effective(1001, 1001), real(0, 0)] ../source3/smbd/smbXsrv_open.c:698(smbXsrv_open_global_store)
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Jan 15 04:02:58 CET 2014 on sn-devel-104
I.e. the durable reconnect attempt is v1 while the original create was durable
v2 including the create guid.
Implement this by skipping the create_guid verification when
the reconnect request is v1.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Tue Feb 19 11:12:01 CET 2013 on sn-devel-104
