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This actually saves a few bytes in .text. Maybe due to the struct assignments?
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
MS-SMB2: 3.3.5.2.4 Verifying the Signature.
If the SMB2 header of the SMB2 NEGOTIATE
request has the SMB2_FLAGS_SIGNED bit set in the
Flags field, the server MUST fail the request
with STATUS_INVALID_PARAMETER.
Found and fix confirmed by Microsoft test tool.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
This avoids recursion into smbd_smb2_io_handler(),
which avoids confusion when analysing out put of
performance analysing tools, e.g. callgrind.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat May 31 04:25:36 CEST 2014 on sn-devel-104
smb2req always comes from talloc_zero().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Apr 11 23:55:17 CEST 2014 on sn-devel-104
This way the buffer will likely be allocated within the existing talloc_pool,
which avoids one malloc() per request.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
For recvfile we haven't read and may not allocated the dyn buffer.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
In the common case with just one request, we can use a preallocated
req->out.vector.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Mar 6 00:59:29 CET 2014 on sn-devel-104
It is only important that the content of info->data stays alive
for the lifetime of the request, but the DATA_BLOB structure itself
can be on the stack, while passing it as 'dyn' to smbd_smb2_request_done_ex().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Use a preallocated buffer for the first response in the compound chain.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We can use a preallocated buffer for the possible error
response of the first response in the compound chain.
This avoids a talloc_array_zero() call for the common case.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We can avoid a talloc_zero_array() call in the
common case (without compound requests) and use a
preallocated array instead.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
If this isn't NT_STATUS_OK, we skip any io on the socket.
This avoids possible problems during shutdown.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Nov 27 16:31:44 CET 2013 on sn-devel-104
We need to pass the NBT header, SMB2 header and SMB2 Read header
as header blob to SMB_VFS_SENDFILE(). This allows the usage
of MSG_SEND or other tricks to avoid multiple TCP packets
on the wire.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
This matches the behavior for smb1 requests
and avoids an additional malloc() per request.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
If the request is already done we can avoid one iteration
of tevent_loop_once(), which means we avoids one
talloc_stackframe_pool/talloc_free pair.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Going via tevent_req_create/talloc_free at multiple layer costs
too much cpu cycles per request.
I tested downloading a 16GB (sparse) file with smbclient -b1 -mNT1,
and -mSMB2_02. Using smb2 max read = 64512, which means smb1 and smb2
will use the same read size.
I build with -O3 -g and compared the results with valgrind --tool=callgrind.
With -mNT1 the server uses about 2.000.000.000 cpu cycles.
This patch reduces the userspace cpu cycles for -mSMB2_02
from about ~ 8.000.000.000 down to ~ 4.000.000.000.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
smbd_smb2_request_error_ex() should return NTSTATUS and the caller
will terminate the connection.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
I.e. when the request is a session setup.
We replied with ACCESS_DENIED, but windows expects USER_SESSION_DELETED
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Oct 2 22:07:44 CEST 2013 on sn-devel-104
Windows (at least the test suites) may skip the SMB2_HDR_FLAG_SIGNED
in a reauth session setup, but still provide a valid signature.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Signed-off-by: Richard Sharpe <rsharpe@samba.org>
Autobuild-User(master): Richard Sharpe <sharpe@samba.org>
Autobuild-Date(master): Thu May 23 06:53:17 CEST 2013 on sn-devel-104
And also remove the restriction that we can't read a new
request whilst we're in this state.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <realrichardsharpe@samba.org>
This is only allowed for opens that cause an oplock break, otherwise it
is not allowed. See [MS-SMB2].pdf note <194> on Section 3.3.5.2.7.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <realrichardsharpe@gmail.com>
Too hard to deal with splitting off the replies.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <realrichardsharpe@gmail.com>
This turns on the real receivefile detection, and completes
the receivefile code path changes.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan (metze) Metzmacher <metze@samba.org>
If an incoming PDU might qualify, only read
SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN = (SMB2_HEADER + SMB2_WRITE_BODY_LEN)
bytes rather than the whole PDU.
Next time we're called, use is_smb2_recvfile_write() to decide if
this is an SMB2_WRITE that fit the receivefile criteria, otherwise
just read the rest of the PDU.
If we did do a short receivefile read, set up the smb2_req->smb1req->unread_bytes
value to show what bytes remain in the TCP buffers.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan (metze) Metzmacher <metze@samba.org>
Initialize min_recv_size with the size that will trigger the
receivefile write path.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan (metze) Metzmacher <metze@samba.org>
SMB2 opcodes are 16-bit values. We should *never*
be reading them with IVAL(inhdr, SMB2_HDR_OPCODE),
it should always be SVAL(inhdr, SMB2_HDR_OPCODE).
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <realrichardsharpe@gmail.com>
Autobuild-User(master): Richard Sharpe <sharpe@samba.org>
Autobuild-Date(master): Tue Apr 2 07:28:48 CEST 2013 on sn-devel-104
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Nov 2 10:09:36 CET 2012 on sn-devel-104
Because we should not call smbd_smb2_request_error() on an
request that is still running.
If the subreq implementes a cancel function, this should
take care of triggering smbd_smb2_request_error.
metze
Signed-off-by: Michael Adam <obnox@samba.org>
removes unnneccary checks/assignments for compound_related and next_status
and duplicate setting of error status.
And remove (now) unused next_status from struct smbd_smb2_request.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
If we can find a valid session or tcon we'll set it after the lookup,
but it need to make sure to reset it if we don't find the session.
This fixes a problem where a compound unrelated request between
related requests doesn't reset the session.
If we have 3 requests in a compound chain, request 3 should never
use the id's cached from request 1. It should only every inherit
handles from request 2.
metze
