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The idea is to allow the implementation of an SMB2 request to tell the
main SMB2 processing engine that it wants to handle a requests
asynchronously internally.
This has two use cases:
- it allows (internal) async processing of compound requests that would
otherwise be rejected by the SMB2 processing engine
- it preserves sync semantics at the SMB layer, some clients might not
expect arbitrary SMB2 requests going async
Not used for now, will be used in laters commit for async SMB2 FIND
requests.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Not used for now, needed for async write_time updates in
smbd_smb2_query_directory_send().
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@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>
This mainly works like the sync version, but calls ctdbd_parse_send/recv
instead.
We use one global ctdb connection that is used exclusively for async
requests.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Pair-programmed-with: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Implement the ctdb packet layer for async parse send/recv with tevent.
ctdbd_setup_fde() will is used to create an fde from the
connection fd and will be called from dbwrap_ctdb.
ctdbd_parse_send() and ctdbd_parse_recv() will be used by dbwrap_ctdb
for async packet sending and receiving.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Second arg must be NULL when first arg is 0 (it is in all other places).
Bug report and patch from Hanno Böck <hanno@hboeck.de>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12747
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Apr 18 15:43:02 CEST 2017 on sn-devel-144
If setlen == 0 then the second argument must be ignored.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12747
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
When obtaining the security descriptor via getxattr(), first try
optimistically to supply a buffer of 4K, and if that turns out
to be too small, determine the correct buffer size.
The previous behavior of falling back to a 64K buffer encountered
problem with Linux prior to version 3.6, due to pyisical memory
fragmentation. With those kernels, as long as the buffer is 8K or
smaller, getting the xattr is much less prone to failure due to
memory fragmentation.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12737
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Apr 18 04:41:16 CEST 2017 on sn-devel-144
Pure refactoring - add a function that fetches an extended attribute
based on either the file descriptor or the file name.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12737
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
With getxattr(), passing a zero buffer size is a
way of obtaining actual xattr size.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12737
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Add a test that fetches an ACL whose size is larger than 4K.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12737
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12739
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Apr 13 15:20:04 CEST 2017 on sn-devel-144
This variable is populated by a list of values where each value should
be a known option. This patch ensures that illegal values are detected.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12739
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Thu Apr 13 02:44:38 CEST 2017 on sn-devel-144
With the use of sIDHistory it happens that two sids map to the same name:
S-1-5-21-1387724271-3540671778-1971508351-1115 DOMAIN2\d1u1 (1)
S-1-5-21-3293503978-489118715-2763867031-1106 DOMAIN2\d1u1 (1)
On the net it looks like this:
lsa_LookupSids: struct lsa_LookupSids
in: struct lsa_LookupSids
handle : *
handle: struct policy_handle
handle_type : 0x00000000 (0)
uuid : 344f3586-7de4-4e1d-96a9-8c6c23e4b2f0
sids : *
sids: struct lsa_SidArray
num_sids : 0x00000002 (2)
sids : *
sids: ARRAY(2)
sids: struct lsa_SidPtr
sid : *
sid : S-1-5-21-1387724271-3540671778-1971508351-1115
sids: struct lsa_SidPtr
sid : *
sid : S-1-5-21-3293503978-489118715-2763867031-1106
names : *
names: struct lsa_TransNameArray
count : 0x00000000 (0)
names : NULL
level : LSA_LOOKUP_NAMES_ALL (1)
count : *
count : 0x00000000 (0)
lsa_LookupSids: struct lsa_LookupSids
out: struct lsa_LookupSids
domains : *
domains : *
domains: struct lsa_RefDomainList
count : 0x00000001 (1)
domains : *
domains: ARRAY(1)
domains: struct lsa_DomainInfo
name: struct lsa_StringLarge
length : 0x000e (14)
size : 0x0010 (16)
string : *
string : 'DOMAIN2'
sid : *
sid : S-1-5-21-1387724271-3540671778-1971508351
max_size : 0x00000020 (32)
names : *
names: struct lsa_TransNameArray
count : 0x00000002 (2)
names : *
names: ARRAY(7)
names: struct lsa_TranslatedName
sid_type : SID_NAME_USER (1)
name: struct lsa_String
length : 0x0008 (8)
size : 0x0008 (8)
string : *
string : 'd1u1'
sid_index : 0x00000000 (0)
names: struct lsa_TranslatedName
sid_type : SID_NAME_USER (1)
name: struct lsa_String
length : 0x0008 (8)
size : 0x0008 (8)
string : *
string : 'd1u1'
sid_index : 0x00000000 (0)
count : *
count : 0x00000002 (2)
result : NT_STATUS_OK
So the name for S-1-5-21-3293503978-489118715-2763867031-1106 has
S-1-5-21-1387724271-3540671778-1971508351 in referenced lsa_DomainInfo
structure. In that case we should not use the domain name from lsa_DomainInfo,
because we would use the wrong idmap backend.
For the case where the domain part of the sIDHistory sid is a still existing
domain, which can be found our internal list of trusted domains, we now use the
correct idmap backend: the idmap domain from the historic SID.
If the historic domain does no longer exist, we will fallback to the default
idmap domain.
The next step would be doing a lookup sid call for the domain sid, which may
help with one-way trusts.
The long term goal needs to be that idmap backends are based on sids only and
only the smb.conf allows names to be used which will be converted to sids on
startup.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12702
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Wed Apr 12 16:43:30 CEST 2017 on sn-devel-144
If PAM support is enabled, refuse to build if the prerequisite
libraries are not in place, instead of silently disabling PAM
support and continuing with the build.
This simplifies inclusion of pam_wrapper in the tree.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Less lines, less bytes .text
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 Apr 12 05:40:36 CEST 2017 on sn-devel-144
This isn't 100% the same flow, but before this patch we initialized
domain->primary to "false" via "talloc_zero". This means that the
end-result should be the same before and after this patch that IMHO
simplifies the logic a bit.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We're only calling lookuprids for our local SAM and BUILTIN domains, if
that results in a failed lookup for some rid, sending it again via
lookupsids() won't help, it will just fail again.
If the caller wrongly had sent any other SID that is not from our SAM or
BUILTIN via lookuprids(), that it is up to the caller to fix that, not
us.
The retry logic with going through the single sids lookup at the end
added a fake domain with an empty string. The wb_lookupsids caller
wb_sids2xids needed this, as it wasn't doing the needed error handling
itself. As wb_sids2xids has been fixed to cope, we can just fail the
lookupsids here.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
If lookupsids() returned any other error then OK, SOME_NOT_MAPPED or
NONE_MAPPED we must just bail out.
If some or all SIDs could not be mapped via lookupds(), don't fallback
to lookupsid(), it will just fail again.
The retry logic with going through the single sids lookup at the end
added a fake domain with an empty string. The wb_lookupsids caller
wb_sids2xids needed this, as it wasn't doing the needed error handling
itself. As wb_sids2xids has been fixed to cope, we can just fail the
lookupsids here.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
In wb_lookupsids_done() if a SID failed with lookupsids(), remove the
hokey retry via lookupsid().
The retry logic with going through the single sids lookup at the end
added a fake domain with an empty string. The wb_lookupsids caller
wb_sids2xids needed this, as it wasn't doing the needed error handling
itself. As wb_sids2xids has been fixed to cope, we can just fail the
lookupsids here.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
If lookupsid() failed with NT_STATUS_SOME_NOT_MAPPED or
NT_STATUS_NONE_MAPPED, if we didn't get a domain name, don't add a fake
domain to the lsa_RefDomainList. Just set the domain index in the
translated name to UINT32_MAX.
It's up to callers like wb_sids2xids to handle such failed mappings and
wb_sids2xids_lookupsids_done() has been updated in a previous commit to
deal with it.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
If the SID was in an unknown domain, src_name->sid_index will be
UINT32_MAX.
This change allows wb_lookupsids_move_name() to add such names to the
result set. This is not used for now, but will be used in subsequent
commits.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This lets wb_sids2xids_lookupsids_done() deal with wp_lookupsids
returning UINT32_MAX as domain index for SIDs from unknown domains.
Call find_domain_from_sid_noinit() to search our list of known
domains. If a matching domain is found, use it's name, otherwise use the
empty string "". This needed to handle Samba DCs which always returns
sid_index UINT32_MAX for unknown SIDs, even from known domains.
Currently the wb_lookupsids adds these fake domains with an empty string
as domain name, but that's not the correct place to do it. We need the
domain name as it gets passed to the idmap child where the choise of
idmap backend is based on the domain name. This will possibly be changed
in the future to be based on domain SIDs, not the name.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is in the spirit of the "map untrusted to domain" parameter: We
fall back to the local SAM when we get a non-authoritative NO_SUCH_USER
from our domain controller. With this change we can implement
"map untrusted to domain = auto".
We should not strictly need 'sam' before 'winbind', but it makes
it clearer to read and has the same effect.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=2976
BUG: https://bugzilla.samba.org/show_bug.cgi?id=8630
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Apr 10 05:04:03 CEST 2017 on sn-devel-144
find_domain_from_name_noinit() find the correct domain based
on domain->alt_name, but the child for the local domain
fails to detect that winbindd_dual_auth_passdb() should be
used.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=2976
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12709
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The test fails on openSUSE Tumbleweed with:
NT_STATUS_FILE_IS_A_DIRECTORY opening remote file \foo\bar\testfile
This cleans up the code to create a directory 'test' which can be
completely removed so nothing will stay behind. It also makes sure that
all parent directories are created and the files have some content.
https://bugzilla.samba.org/show_bug.cgi?id=12721
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Apr 8 12:29:19 CEST 2017 on sn-devel-144
NT_STATUS_NONE_MAPPED and NT_STATUS_SOME_NOT_MAPPED should not be
treated as fatal error. We should continue processing the results and
not bail out.
In case we got NT_STATUS_NONE_MAPPED we must have to ensure all
lsa_TranslatedName are of type SID_NAME_UNKNOWN.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12728
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
NT_STATUS_NONE_MAPPED is not a fatal error, it just means we must return
all lsa_TranslatedName's as type SID_NAME_UNKNOWN.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12728
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Useful helper macro to check the return value of LSA and SAMR
translations.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12728
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
When receiving an SMB create request with read-only access mode and
open_if disposition, we end of calling the open() function with
flags=O_CREAT|O_RDONLY for the ._ AppleDouble file.
If the file doesn't exist, ie there's currently no rsrc stream, we create
it but then we fail to write the AppleDouble header into the file due to
the O_RDONLY open mode, leaving a 0 byte size ._ file.
Running this create requests against macOS SMB server yields an
interesting result: it returns NT_STATUS_OBJECT_NAME_NOT_FOUND even
though create dispotion is open_if. Another instance where the macOS SMB
server just exposes FSA behaviour (ie HFS+) and we have to adapt to be
compatible.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12565
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
