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RootDNSServers should never be returned (Windows DNS server don't)
..TrustAnchors should never be returned as is, (Windows returns
TrustAnchors) and for the moment we don't support DNSSEC so we'd better
not return this zone.
It avoid bugs when one of the buffer is supposed to contain a string
that is not null terminated (ie. label->label) and that we don't force
the last byte to 0.
The problem was found by the DRSR testsuite where server objects were
created in the Site container without serverrefrence attribute
triggering error in the testsuite.
Reported-by: Matthieu Patou <mat@samba.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User(master): Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date(master): Mon Oct 8 04:43:37 CEST 2012 on sn-devel-104
When winbind is restarted, there is a potential crash in tdb. Following
situation: We are in a cluster with ctdb. A winbind child hangs
in a request to the DC. Cluster monitoring decides the node has a
problem. Cluster monitoring decides to kill ctdbd. winbind child
still hangs in a RPC request. winbind parent figures that ctdb is
dead and immediately commits suicide. winbind parent is restarted by
cluster management, overwriting gencache.tdb with CLEAR_IF_FIRST. The
CLEAR_IF_FIRST logic as implemented now will not see that a child still
has the tdb open, only the parent holds the ACTIVE_LOCK due to performance
reasons. During the CLEAR_IF_FIRST logic is done, there is a very small
window where we ftruncate(tfd, 0) the file and re-write a proper header
without a lock. When during this small window the winbind child comes
back, wanting to store something into gencache.tdb, that winbind child
will crash with a SIGBUS.
Sounds unlikely? See:
[2012/09/29 07:02:31.871607, 0] lib/util.c:1183(smb_panic)
PANIC (pid 1814517): internal error
[2012/09/29 07:02:31.877596, 0] lib/util.c:1287(log_stack_trace)
BACKTRACE: 35 stack frames:
#0 winbindd(log_stack_trace+0x1a) [0x7feb7d4ca18a]
#1 winbindd(smb_panic+0x2b) [0x7feb7d4ca25b]
#2 winbindd(+0x1a3cc4) [0x7feb7d4bacc4]
#3 /lib64/libc.so.6(+0x32900) [0x7feb7a929900]
#4 /lib64/libc.so.6(memcpy+0x35) [0x7feb7a97f355]
#5 /usr/lib64/libtdb.so.1(+0x6e76) [0x7feb7b0b0e76]
#6 /usr/lib64/libtdb.so.1(+0x3d37) [0x7feb7b0add37]
#7 /usr/lib64/libtdb.so.1(+0x863d) [0x7feb7b0b263d]
#8 /usr/lib64/libtdb.so.1(+0x8700) [0x7feb7b0b2700]
#9 /usr/lib64/libtdb.so.1(+0x2505) [0x7feb7b0ac505]
#10 /usr/lib64/libtdb.so.1(+0x25b7) [0x7feb7b0ac5b7]
#11 /usr/lib64/libtdb.so.1(tdb_fetch+0x13) [0x7feb7b0ac633]
#12 winbindd(gencache_set_data_blob+0x259) [0x7feb7d4d8449]
#13 winbindd(gencache_set+0x53) [0x7feb7d4d85b3]
#14 winbindd(gencache_del+0x5e) [0x7feb7d4d879e]
#15 winbindd(saf_delete+0x93) [0x7feb7d54b693]
#16 winbindd(+0xe507e) [0x7feb7d3fc07e]
#17 winbindd(+0xe85e5) [0x7feb7d3ff5e5]
#18 winbindd(+0xe65be) [0x7feb7d3fd5be]
#19 winbindd(+0xe7562) [0x7feb7d3fe562]
#20 winbindd(init_dc_connection+0x2e) [0x7feb7d3fe5be]
#21 winbindd(+0xe75d9) [0x7feb7d3fe5d9]
#22 winbindd(cm_connect_netlogon+0x58) [0x7feb7d3fe658]
#23 winbindd(_wbint_PingDc+0x61) [0x7feb7d410991]
#24 winbindd(+0x103175) [0x7feb7d41a175]
#25 winbindd(winbindd_dual_ndrcmd+0xb7) [0x7feb7d4107d7]
#26 winbindd(+0xf8609) [0x7feb7d40f609]
#27 winbindd(+0xf9075) [0x7feb7d410075]
#28 winbindd(tevent_common_loop_immediate+0xe8) [0x7feb7d4db198]
#29 winbindd(run_events_poll+0x3c) [0x7feb7d4d93fc]
#30 winbindd(+0x1c2b52) [0x7feb7d4d9b52]
#31 winbindd(_tevent_loop_once+0x90) [0x7feb7d4d9f60]
#32 winbindd(main+0x7b3) [0x7feb7d3e7aa3]
#33 /lib64/libc.so.6(__libc_start_main+0xfd) [0x7feb7a915cdd]
#34 winbindd(+0xce2a9) [0x7feb7d3e52a9]
This is in a winbind child, logfiles surrounding indicate the parent
was restarted.
This patch takes all chain locks around the CLEAR_IF_FIRST introduced
tdb_new_database.
When probing for a size change (eg. just before tdb_expand, tdb_check,
tdb_rescue) we call tdb_oob(tdb, tdb->map_size, 1, 1). Unfortunately
this does nothing if the tdb has actually shrunk, which as Volker
demonstrated, can actually happen if a "longlived" parent crashes.
So move the map/update size/remap before the limit check.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
they are different so should go through a mapping function. Ensure this is so.
Practically this does not matter, as for user permissions the mapping
function is an identity, and the extra bits we may add are ignored
anyway, but this makes the intent clear.
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Oct 6 03:04:14 CEST 2012 on sn-devel-104
This will avoid 'surprise returns' and makes the code cleare to readers.
These macros were complex enough to warrant a full function anyway not
just for readability but also for debuggability.
Thanks David for pointing out this issue.
Autobuild-User(master): Simo Sorce <idra@samba.org>
Autobuild-Date(master): Fri Oct 5 23:24:17 CEST 2012 on sn-devel-104
By calling talloc_set_memlimit() we can now set a max memory limit
for a whole talloc hierarchy.
ANy attempt to allocate memory beyond the max allowed for the whole
hierarchy wil cause an allocation failure.
Stealing memory correctly accounts for used memory in the old and the new
hierarchy but exceeding the memory limit in the new parent will not cause
a failure.
This reverts commit c251a6b0442abc13bc8be4ff8de324c1d7706a78.
Remove this as we're planning to remove the security mask,
directory security mask parameters and only use create mask/directory mask.
Thanks to Christian Perrier <bubulle@debian.org> for reporting!
Fix bug #7826 - HTML docs index file still points to Using Samba.
Karolin
Autobuild-User(master): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(master): Thu Oct 4 13:48:00 CEST 2012 on sn-devel-104
This allows for an emergency best-effort dump. It's a little better than
strings(1).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User(master): Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date(master): Thu Oct 4 03:16:06 CEST 2012 on sn-devel-104
Signing cannot be disabled for SMB2 by design, so fix the documentation
instead.
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Oct 3 23:47:23 CEST 2012 on sn-devel-104
This reverts commit dfd3c31a3f9eea96854b2d22574856368e86b245.
As Metze pointed out:
From MS-SMB2 section 2.2.4:
SMB2_NEGOTIATE_SIGNING_ENABLED
When set, indicates that security signatures are enabled
on the server. The server MUST set this bit, and the client MUST return
STATUS_INVALID_NETWORK_RESPONSE if the flag is missing.
I'll submit a documentation bug to fix#9222 that way.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Oct 3 18:10:14 CEST 2012 on sn-devel-104
