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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
